KR100676446B1 - Method and apparatus for cleaning drain pipe - Google Patents

Abstract

A drainage pipe cleaning method and apparatus capable of turning a nozzle along a pipe inner circumferential surface even in a horizontal pipe, wherein a plurality of injection holes 10, 11, 12, and 13 formed in the nozzle 1 and the respective injection holes 10, 11 are provided. , 12, 13) was set such that only specific injection holes 10 face the inner circumferential surface 5a of the pipes among the plurality of injection holes.

Nozzle, blower, high pressure hose, reference line, crimp socket, flexible guide, inner surface of pipe

Description

Drain pipe cleaning method and apparatus {METHOD AND DEVICE FOR WASHING DRAIN PIPE}

This invention relates to the improvement of the washing | cleaning method and apparatus of the drain pipe which cleans plumbing installations, such as a drain pipe installed in an apartment, a building, etc.

The conventional head portion provided at the tip of the high pressure hose used to clean the plumbing equipment includes nozzles provided with a plurality of nozzles at a predetermined pitch along the circumferential direction, each having a plurality of injection holes for radially ejecting the high pressure water radially backwards with respect to the traveling direction; Consists of a flexible guide installed at the tip of the nozzle.

Such a high pressure hose is housed in a rotating drum, as disclosed in Japanese Patent Application Laid-Open Nos. 55-20380 and 49-37403, and the high pressure hose is rotated by rotating the rotary drum.

On the other hand, the nozzle provided at the tip of the above-mentioned high pressure hose is, as disclosed in Japanese Patent Laid-Open No. 54-110658, the driving force of the high pressure water injected from the nozzle and the withdrawal and rotational operation of the high pressure hose from the rotating drum. This progresses while rotating the inside of the drain pipe, thereby cleaning the circumferential surface of the pipe.

By the way, the above-mentioned drainage pipes to be cleaned are divided into longitudinal pipes and horizontal pipes. According to the conventional drainage pipe cleaning device described above, when the high pressure hose is rotated in the vertical pipe, the nozzle connected to the tip of the high pressure hose is rotated. The nozzle is rotated along the inner circumferential surface of the longitudinal pipe.

In this state, if the high pressure hose is drawn out little by little from the rotating drum and fed into the tube. The nozzle is advanced while turning spirally along the inner circumferential surface of the longitudinal pipe, and the solid matter attached to the inner circumferential surface of the vertical pipe is pulverized and removed by the high pressure water injected from the nozzle.

On the other hand, in the case where the drain pipe is a horizontal pipe, even if the high pressure hose is rotated in the horizontal pipe, its weight does not turn along the inner circumferential surface of the pipe because self-weight acts on the nozzle.

Therefore, even if the high pressure hose is rotated in the horizontal pipe and the high pressure hose is drawn out from the rotating drum and fed into the pipe in the case where the drain pipe is a horizontal pipe, the nozzle simply proceeds linearly along the pipe bottom of the horizontal pipe. Since it is not spirally rotated, there is a disadvantage that the cleaning power of the inner circumferential surface of the horizontal pipe, in particular, is poor.

In addition, since the injection pressure of the high pressure water injected from the injection hole of the nozzle decreases as it moves away from the pipe wall, the solid matter attached to the upper part of the transverse pipe at a position far from the bottom of the pipe is difficult to be crushed by the high pressure water. A facility for supplying a higher pressure and a larger amount of water is required, and even in this respect, the conventional one cannot efficiently clean the inside of the tube efficiently.

In addition, the above-described conventional nozzle is a self-propelled structure that obtains a driving force by high pressure water injected obliquely to the rear, so that, for example, when repeatedly cleaning a specific position of a pipe, the nozzle is once It is necessary to pull back, in this case, since the nozzle obtains a large propulsion force by the injection of high pressure water, a large force is required and practically difficult to pull back. Here, in the case of repeatedly cleaning a specific position of the conventional pipe, once the injection of high pressure water is stopped, the nozzle is pulled back to the rear of the specific position, and then the high pressure water is sprayed obliquely again to advance the nozzle, Therefore, complicated work such as cleaning by passing through a specific position of the cleaning object was necessary.

In recent years, in the case of cleaning a drain pipe such as a mansion, the drain pipe is installed in each room as in the prior art (starting point of the drain pipe communicating with waste water facilities such as a sink and a tray). This cleaning cannot be started by inserting the nozzle, and the nozzle is inserted into the corresponding drain pipe from the drain pipe in the condensation pipe centralized management unit which intensively arranges and manages the rear end side of each drain pipe installed in each room. Cleaning is started toward the start of the drain pipe of each room.

Thus, when the washing | cleaning of the said drainage pipe is started from the rear end side of each room drainage pipe in a drainage pipe central management part, even if the owner of each room is going out, it can simply wash | clean a drainage pipe.

In this case, according to the conventional drain pipe cleaning apparatus, the high pressure water is radially ejected radially only to the rear of the nozzle in an oblique direction to clean the drain pipe, and the nozzle is cleaned by the reaction force when the high pressure water collides with the pipe wall. Because of the structure of advancing in the advancing direction, negative pressure is likely to occur in the drain pipe in the forward direction of the nozzle due to the high pressure water ejected obliquely backwards, and therefore, the drain pipe in each room is located at the start end side of the drain pipe. There was a fear of destroying the sealing water valve by aspirating water from the sealing water valve.

Moreover, this sealing water valve is formed in the starting end side of the drain pipe which normally communicates with waste water installations, such as a "sink stand, a bathtub, etc.," and it is air | atmosphere by the water which stays in it. In particular, since the odor coming from the drain pipe or a small animal can be prevented from entering the room, when it is destroyed, the odor may fill the room via the drain pipe.

Accordingly, it is a first object of the present invention to provide a drain pipe cleaning method and apparatus capable of turning a nozzle along a pipe inner circumferential surface even in a transverse pipe.

Further, a second object of the present invention is to provide a drain pipe cleaning method and apparatus capable of turning a nozzle along the inner circumferential surface of a transverse pipe and at the same time repeatedly cleaning a specific position in the pipe with a simple operation.

Further, a third object of the present invention is to provide a drainage pipe cleaning method and apparatus capable of turning a nozzle along a pipe wall along a pipe inner circumferential surface within a transverse pipe and without destroying the sealing water valve.

In order to achieve the above-mentioned first object, in the first drain pipe cleaning method and apparatus of the present invention, a nozzle is provided at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and a plurality of injection holes are provided in the nozzle. A high pressure water is injected obliquely from the back, and the jetting force generates a propulsive force to the nozzle, sends the high pressure hose into the drain pipe while rotating the high pressure hose, and washes the inside of the pipe by the high pressure water sprayed from the nozzle. In the cleaning method, the nozzle is spirally rotated along the inner circumferential surface of the pipe so that only a specific injection hole is always opposed to the inner circumferential surface of the plurality of injection holes with the rotation and withdrawal of the high pressure hose.

Moreover, in order to achieve the 2nd object mentioned above, in the 2nd waste pipe washing | cleaning method and apparatus of this invention, the nozzle is provided in the front-end | tip of a high pressure hose, a flexible guide is connected to the front-end | tip of this nozzle, and the some installed in the said nozzle In the drain pipe cleaning method of spraying the high pressure water from the injection hole, and sending the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water sprayed from the nozzle, the rotation of the high pressure hose, With the withdrawal and withdrawal operation, the nozzle is spirally rotated so that only a certain injection hole among the plurality of injection holes faces the tube inner circumferential surface, and the diameter of the specific injection hole is larger than that of other injection holes. It is set larger, and the angle α at which the central axis I of this specific injection hole meets the central axis H of the nozzle, and the central axis of the other injection hole. For (J) and the central axis an angle (β) (H) meets the nozzle respectively set to 90 degrees.

Further, in order to achieve the above-mentioned third object, in the third drain pipe cleaning method and apparatus of the present invention, a nozzle is provided at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and a plurality of nozzles are provided in the nozzle. In the drain pipe cleaning method of spraying the high pressure water from the injection hole, and sending the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water sprayed from the nozzle, the rotation of the high pressure hose, Along with the feeding operation, the nozzle is spirally rotated so that only a specific injection hole faces the inner circumferential surface of the plurality of injection holes, and the diameter of the specific injection hole is set larger than the other injection hole diameters. Also, the position of the specific injection hole is immediately seen from the direction of travel of the nozzle and is formed behind the position of the other injection hole. The angle α at which the center axis line I of this specific injection hole meets the center axis line H of the nozzle is set at an acute angle, and the center axis line J of the other injection hole and the center axis line of the nozzle ( Angles β where H) meet are set to approximately 90 degrees each.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of a main portion showing a nozzle according to a first drain pipe cleaning method and apparatus of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

Fig. 3 is a sectional view of the main part showing the state where the nozzle is installed in the horizontal pipe.

4 is a cross-sectional view taken along the line B-B in FIG.

5 is a cross-sectional view showing the operation of the first drain pipe cleaning method and apparatus of the present invention.

6 is a sectional view showing the main parts of the drain pipe arrangement.

7 is a cross-sectional view showing the operation of the first drain pipe cleaning method and apparatus of the present invention.                 

8 is a cross-sectional view showing the operation of the first drain pipe cleaning method and apparatus of the present invention.

9 is a cross-sectional view showing the operation of the first drain pipe cleaning method and apparatus of the present invention.

10 is a cross-sectional view showing the operation of the first drain pipe cleaning method and apparatus of the present invention.

11 is a sectional view of the main portion showing the action of the nozzle in the cross pipe.

Fig. 12 is a sectional view of the main portion showing the action of the nozzle at the bent portion of the drain pipe.

13 is a plan view of a high pressure hose showing a reference line for a particular jet hole location.

14 is a sectional view showing the main parts of a nozzle in the second drain pipe cleaning method and apparatus according to the present invention.

15 is a cross-sectional view taken along the line A-A of FIG.

It is a principal part sectional drawing which shows the state which installed the nozzle in the horizontal pipe.

17 is a cross-sectional view taken along the line B-B in FIG.

18 is a cross-sectional view showing the operation of the second drain pipe cleaning method and apparatus of the present invention.

19 is a sectional view showing the main parts of the drain pipe arrangement.

20 is a cross-sectional view showing the operation of the second drain pipe cleaning method and apparatus of the present invention.                 

21 is a cross-sectional view showing the operation of the second drain pipe cleaning method and apparatus of the present invention.

22 is a cross-sectional view showing the operation of the second drain pipe cleaning method and apparatus of the present invention.

23 is a cross-sectional view showing the operation of the second drain pipe cleaning method and apparatus of the present invention.

It is main part sectional drawing which shows the action of the nozzle in a horizontal pipe.

25 is a sectional view of the main portion showing the action of the nozzle in the cross pipe.

It is a principal part sectional drawing which shows the action | action of the nozzle in the bending part of a drain pipe.

27 is a plan view of a high pressure hose showing a reference line for indicating the position of a particular injection hole.

Fig. 28 is a sectional view showing the main parts of a nozzle in the third drain pipe cleaning method and apparatus according to the present invention;

FIG. 29 is a cross-sectional view taken along the line A-A of FIG. 41.

It is a principal part sectional view which shows the state which installed the nozzle in the horizontal pipe.

FIG. 31 is a cross-sectional view taken along the line C-C in FIG.

32 is a cross-sectional view showing the operation of the third drain pipe cleaning method and apparatus of the present invention.

33 is a sectional view showing the principal parts of the drain pipe arrangement.

34 is a cross-sectional view showing the operation of the third drain pipe cleaning method and apparatus of the present invention.

35 is a cross-sectional view showing the operation of the third drain pipe cleaning method and apparatus of the present invention.

36 is a cross-sectional view showing the operation of the third drain pipe cleaning method and apparatus of the present invention.

37 is a cross-sectional view showing the operation of the third drain pipe cleaning method and apparatus of the present invention.

Fig. 38 is a sectional view of the main portion showing the action of the nozzle in the cross pipe;

Fig. 39 is a sectional view of the main portion showing the action of the nozzle in the cross pipe;

Fig. 40 is a sectional view showing the main parts of the main part, showing the action of the nozzle at the drain pipe bent portion;

41 is a plan view of a high pressure hose showing a reference line for indicating the position of a specific injection hole.

Hereinafter, a first drain pipe cleaning method and apparatus according to the present invention will be described in detail.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view showing the main part of a high pressure hose tip showing the action of a nozzle 1 applied to a first drain pipe cleaning method and apparatus of the present invention.

This nozzle 1 is connected via a crimp socket 4 to a tip of a high pressure hose 2 made of a slightly flexible rigid pipe, for example, a stainless hose, for supplying high pressure water. You are connecting directly. At the tip of the nozzle 1, a known flexible guide 6 is provided. For details of this flexible guide 6, refer to Japanese Patent Application Laid-Open No. 62-163789.

In addition, when the above-mentioned nozzle 1 and the high pressure hose 2 are directly connected through the crimping socket 4, the connection ends 2a and 의 of the high pressure hose 2 and the tip end surface 1a of the nozzle 1 are connected. Since the length L between the tops can be set short, the curvature of the high pressure hose 2 in the curved part of the pipe mentioned later can be improved significantly.

On the other hand, as shown in Fig. 2 showing a cross-section line AA of Figure 1, four injection holes (10, 11, 12, 13) for injecting high-pressure water consisting of water or hot water is drilled in the rear outer peripheral surface of the nozzle (1) These injection holes 10, 11, 12, 13 are connected to the inside of the hose 2 through the shaft holes 1b and 의 of the nozzle 1 and the hose joint 3, as shown in FIG. 1. Communicating.

In addition, in the embodiment, as shown in FIG. 2, among the injection holes 10, 11, 12, and 13, the size of the diameter of the injection hole 10 located below is different from the injection hole having the same diameter ( 11, 12, 13) It is set larger than the diameter, and the high pressure water of large flow volume is sprayed in the injection hole 10 by this.

In addition, among the other injection holes 11, 12, 13, the injection hole 12 is formed at a position symmetrical with the injection hole 10 about the center O of the nozzle 1, and the injection hole 11, 13) forms a predetermined angle inclined in opposite directions along the circumferential direction with respect to O, and is formed at positions symmetrically with respect to the line segment connecting the injection hole 12 and the center O.

In addition, the sum total of the cross-sectional area of each injection hole 10, 11, 12, 13 is set equal to the sum of the cross-sectional area of the some injection hole formed in the conventional nozzle.                 

In addition, as shown in FIG. 1, the inclination angle of the center axis line I of the large diameter injection hole 10 mentioned above with respect to the center axis H of the axis hole 1b of the nozzle 1 is set to (alpha) degree. The inclination angles of the central axis J with respect to the central axis H of the shaft hole 1b of the nozzle 1 of the other injection holes 11, 12, 13 are set to β degrees (α <β), respectively. Doing.

In addition, the reason why the inclination angle α degrees of the large injection holes 10 is set smaller than the inclination angle β degrees of the injection holes 11, 12, 13 is as shown in FIG. 3. Of the horizontal drainage pipe 5 of the injection pressures F1, F2, F3, F4 (F1> F2 = F3 = F4) of each of the high pressure water injected obliquely backwards from the respective injection holes 10, 11, 12, and 13 in the chamber. The component force F1 'of the injection pressure F1 acting toward the inner circumferential surface 5a is set relatively small, and the pressures of the injection pressures F2, F3, F4 acting toward the inner circumferential surface 5a by F2, F3, and F4 are also set. Each component F2 ', F3', F4 'is set relatively large, and only the injection hole 10 is pushed to the tube inner peripheral surface 5a.

In addition, by setting the F1 'relatively small by decreasing the inclination angle α degree of the injection hole 10 in this manner, the force acting directly on the inner circumferential surface of the pipe is reduced, and the risk of damage to the pipe during cleaning is reduced as much as possible.

When high-pressure water is injected from each of the injection holes 10, 11, 12, and 13 of the nozzle 1, in which the inclination angle is set in this way, as shown in FIG. 4 showing the cross-sectional line BB of FIG. The components F1 ', F2', F3 ', and F4' act on the inner circumferential surface 5a of (5), respectively.

At this time, a reaction corresponding to F1 ', F2', F3 ', F4' acts on the nozzle 1 from the inner circumferential surface 5a of the horizontal drain pipe 5, but the nozzle 1 is the pipe bottom of the horizontal drain pipe 5. If you are at (5b, 管 底) the reaction is,

Satisfy the conditions of F1 '<F2 "+ F3' + F4" + mg ... (1),

In addition, as shown in Fig. 5 in which the same parts as in Fig. 4 are denoted by the same reference numerals, the nozzle 1 is in the tubular shape 5c (pipe up).

F1 ', F2 ", F3', F4", mg are set to satisfy the conditions of F1 '<F2 "+ F3' + F4"-mg ... (2).

In addition, mg is a magnetic weight which acts on the nozzle 1, F2 "is a component force which acts in the vertical direction of F2 ', and F4" is a component force which acts in the vertical direction of F4'.

4 and 5, F2 "'is the component force which acts in the horizontal direction of F2', and F4" 'is the component force which acts in the horizontal direction of F4', and each acts in each horizontal direction. The rotation of the nozzle 1 is prevented in the horizontal pipe 5 by the component force.

On the other hand, if F1 ', F2 ", F3', F4", and mg are set so that the above formulas (1) and (2) can be satisfied (that is, high-pressure water sprayed from the injection positions and the plurality of injection holes) 4, when the nozzle 1 is in the pipe bottom 5b of the horizontal pipe 5, based on the setting conditions of Formula (1), the nozzle 1 ) Maintains the posture in which only the injection hole 10 is pressed by the pipe bottom 5b.

In addition, as shown in FIG. 5, when the nozzle 1 exists in the tubular shape 5c of the horizontal pipe 5, based on the setting conditions of Formula (2), only the injection hole 10 is the nozzle 1 The posture pressed by the tubular body 5c is maintained.

When the above-described setting conditions are satisfied, in the attitude of the nozzle 1 shown in FIG. 4, the high-pressure water jetted from the injection hole 10 having the largest diameter has the largest flow rate, and the injection hole 10 ) Closest to the pipe bottom 5b of the cross pipe 5, the solids attached to the pipe bottom 5b of the cross pipe 5 can be efficiently cleaned by the high pressure water jetted from the injection hole 10. have.

In addition, when hot water is used as the high pressure water, the cleaning efficiency is further increased.

In addition, in the posture of the nozzle 1 shown in FIG. 5, the high pressure water jetted from the injection hole 10 having the largest diameter has the largest flow rate, and the injection hole 10 is the tubular shape of the transverse pipe 5. The solids attached to 5c) can be efficiently washed.

Next, the washing | cleaning effect of the drain pipe in the above-mentioned waste pipe cleaning method and apparatus is demonstrated, and a structure is demonstrated in detail.

Fig. 6 is a sectional view of the main parts of the piping equipment, showing the action of the first drain pipe cleaning device according to the present invention.

The high pressure hose 2 fixedly installed at the rear end of the nozzle 1 is connected to the outlet of the high pressure pump (not shown) via the terminal 20.

The terminal 20 controls the valve for opening and closing the high pressure water supplied from the high pressure pump, withdrawing the high pressure hose 2 wound on the drum, winding the high pressure hose 2 to the drum, and rotating the high pressure hose 2. In charge of. In addition, the detail of this terminal 20 is disclosed by Unexamined-Japanese-Patent No. 56-36856.

In order to clean the drain pipe 21, each injection hole 10, 11, 12, 13 of the nozzle 1 attached to the front-end | tip of the high pressure hose 2 was pressurized by the high pressure pump which is not shown in figure (refer FIG. 2). By spraying at

That is, while pulverizing and peeling off the pipe | tube deposit a with the high pressure water injected obliquely backward of the nozzle 1, the nozzle 1 is a propulsion force obtained by the high pressure water injected, and the manual of the high pressure hose 2 is carried out. Or advance the pipe by an automatic withdrawal operation.

At this time, in the transverse pipe 5 of the drain pipe 21, when the high pressure hose 2 is rotated in one direction by the terminal 20 from the initial position of the nozzle 1 shown in FIG. This nozzle 1 rotates clockwise about the shaft hole 1b as shown by the arrow.

When the nozzle 1 rotates, the injection direction of the high pressure water F1, F2, F3, F4 injected from each injection hole 10, 11, 12, 13 changes as shown in FIG. When the turning force in the direction of the arrow G is generated in the state where only the injection hole 10 is held in the nozzle 1 by the tube inner peripheral surface 5a, the nozzle 1 is shown in FIG. , The injection hole 10 reaches the position facing the tubular c of the transverse pipe 5 while maintaining the posture facing the tube inner peripheral surface 5a at all times.

In addition, as shown in this FIG. 5, the high pressure hose 2 shown in FIG. 6 at the time when the injection hole 10 of the nozzle 1 reached the position which opposes the tubular 5c of the horizontal pipe 5 is shown. ), The nozzle 1 stops turning in a state in which the injection hole 10 maintains a posture opposite to the tubular 5c of the horizontal pipe 5.

Therefore, as shown in FIG. 5, after stopping the turning in the state which hold | maintained the position which opposes the injection hole 10 of the nozzle 1 to the tubular 5c of the horizontal pipe 5, the high pressure hose 2 When the withdrawal operation is performed manually or automatically, the injection hole 10 of the nozzle 1 proceeds along the longitudinal direction in the state facing only the tubular 5c of the diaphragm 5, so that the tubular of the diaphragm 5 Only the inner tube a (FIG. 6) attached to 5c) can be pulverized and peeled off by the high pressure water having the largest flow rate injected from the injection hole 10.

In addition, by rotating the high pressure hose 2 by the terminal 20 (FIG. 6) in the position of the nozzle 1 shown in FIG. 5, this nozzle 1 is also clocked around the shaft hole 1b like an arrow. Direction, the injection direction of the high pressure water F1, F2, F3, F4 injected from each injection hole 10, 11, 12, 13 at the time of rotation changes as shown in FIG. The nozzle 1 starts turning to the arrow G direction in the state which only the injection hole 10 maintains the attitude | position pressed by the pipe inner peripheral surface 5a.

As such, when the nozzle 1 starts turning in the direction of the arrow G while maintaining only the injection hole 10 in the posture of being pressed against the inner circumferential surface 5a of the tube, the nozzle 1 is shown in FIG. Similarly, the injection hole 10 pivots inside the transverse tube 5 while maintaining the posture facing the tube inner peripheral surface 5a at all times, and finally, as shown in FIG. It returns to the initial position which opposes the pipe bottom 5b of the horizontal pipe 5.

Therefore, in the transverse pipe 5 of the drain pipe 21 shown in FIG. 6, the nozzle 1 is rotated by the terminal 20 and pulled out, as shown in the enlarged main part of FIG. 11. ) Rotates helically in the direction of arrow G while maintaining the posture in which the injection hole 10 with the highest injection amount is opposed to the inner circumferential surface 5a of the tube, and thus, the inner tube 5 is attached to the inner circumferential surface 5a. This is effectively pulverized and peeled off by the high pressure water with the largest injection rate.

In addition, in the longitudinal pipe 22 shown in FIG. 6, the high pressure hose 2 is rotated at a constant speed, the high pressure hose 2 is drawn out, and the nozzle 1 spirally rotates the inner circumferential surface of the pipe. .

Also in this case, since the injection hole 10 with the largest injection amount is rotated helically while maintaining the posture facing the inner circumferential surface 22a of the longitudinal pipe 22, the nozzle 1 remains in the tube pipe within the vertical pipe. a) is efficiently pulverized and peeled off.

In addition, as shown in FIG. 1, the nozzle 1 and the high pressure hose 2 are directly connected through the crimping socket 4, so that the connection end 2a and the nozzle 1 of the high pressure hose 2 are connected. Since the length L between the front end surfaces 1a is set short, as shown in FIG. 12, in the curved part 23 of the drain pipe 21, the curvature of the high pressure hose 2 near the nozzle 1, That is, the curvature radius at the time of curvature can be set further smaller, and the nozzle 1 thus passes smoothly through the curved part 23 of the small diameter drain pipe, and it efficiently passes through the curved part 23 of such a small diameter drain pipe. It can be washed.

In addition, in the above embodiment, since the posture that the injection hole 10 having the highest injection amount is always opposed to the inner circumferential surface of the drain pipe can be maintained, for example, as shown in FIG. 13, the injection hole of the nozzle 1 On the outer circumferential surface of the high pressure hose 2 of the portion corresponding to the 10, a reference line 30 indicating the position of the injection hole 10 along the longitudinal direction is formed, and thus, the minute line is rotated while the high pressure hose 2 is rotated. It is possible to know for sure which position of the inner circumferential surface of the pipe hole 10 is located.                 

Therefore, for example, when intensively washing only the tubular shape of a drain pipe, the high pressure hose 2 of the high pressure hose 2 is rotated at the position where the position of the injection hole 10 reaches the tubular shape by the reference line 30. When the rotation is stopped and the high pressure hose is taken out therefrom, only the tubular shape of the drain pipe can be concentrated.

In addition, in the above embodiment, the case in which the four injection holes 10, 11, 12, and 13 for injecting the high-pressure water in the nozzle 1 are described. However, if the above-described equations (1) and (2) are satisfied, The number of the injection holes, the formation position, the size of the diameter, etc. are not limited to the examples, and various modifications are possible.

Further, in the above embodiment, a case has been described in which a fluid such as water or hot water is used as the injection medium to be injected from each of the injection holes 10, 11, 12, and 13 of the nozzle 1, but the present invention has been described in the above embodiments. It is not limited to this, You may use the mixture of a fluid and gas as an injection medium.

When a mixture of fluid and gas is used as the injection medium in this way, when the injection medium collides with the drainage pipe, the mixed gas is scattered and the cleaning power can be further improved.

In addition, various fluids and gases constituting the injection medium may be used. For example, water or hot water may be used as the fluid, and air may be used as the gas.

As described above, in the first drain pipe cleaning method and apparatus of the present invention, among the plurality of injection holes formed in the nozzle, the nozzle is spirally rotated along the tube inner circumferential surface such that the specific injection hole opposes the tube inner circumferential surface. By the rotation of the nozzle, the fixed substance fixed to the entire circumference of the entire tube wall can be pulverized with the high pressure water sprayed from the nozzle, and thus the inside of the various types of tubes can be efficiently and completely cleaned without covering the horizontal and vertical tubes.

In particular, by setting the diameter of the specific injection hole larger than the diameter of the other injection hole, the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle meet each other is determined. By setting smaller than the angle β where the central axis J and the central axis H of the nozzle meet (α <β), the diameter of the specific injection hole serving as the cleaning role can be set larger, and the attachment of the pipe wall can be set. The amount of spray water to be pulverized can be increased to significantly improve its cleaning ability.

Also, by setting the angle α at which the center axis line I of the specific injection hole and the center axis line H of the nozzle intersect to be small, the force acting directly on the pipe wall to be cleaned is reduced. The risk of damaging the product can be reduced as much as possible.

Further, by setting the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle intersect to be smaller, the diameter of the specific injection hole can be set larger than the diameter of other injection holes. Since the amount of the washing water injected from the specific injection hole can be further increased, the terminal for drawing out and drawing the high pressure hose can be further reduced in size by making the diameter of the high pressure hose thin (small).

In addition, by narrowing the diameter of the high pressure hose, passage of the bent portion of the thin drain pipe is also facilitated, and the operation of the cleaning device is significantly increased with the miniaturization of the terminal described above.

In addition, by thinning the high pressure hose without degrading the cleaning ability, the pressure generating device for pumping the cleaning liquid can also be made compact, so that the overall size of the washing machine can be reduced, and the manufacturing cost can be greatly reduced.

In addition, when the size of the overall washing machine is reduced, the weight is reduced, and the operability thereof is improved, the handling of such equipment can be easily carried out by the elderly, thereby ensuring a stable employment of the elderly with particularly demanding working conditions.

Moreover, when an elderly person is engaged in such a work, the quality of the cleaning work is further improved by the rich knowledge and experience, leading to the leveling up of the whole cleaning work.

In addition, by reducing the size and weight of the washing machine described above, reducing the manufacturing cost, and engaging in cleaning work for the elderly, the price of the drain pipe cleaning service provided to the customer can be greatly reduced.

Next, a method and apparatus for cleaning a second drain pipe according to the present invention will be described.

Fig. 14 is a sectional view showing the main part of the high pressure hose end portion showing the nozzle 31 applied to the second drain pipe cleaning method and apparatus according to the present invention, with the same reference numerals as in Figs.

The nozzle 31 is directly connected to the tip of a high-pressure hose 2 made of a rigid pipe, for example, a stainless hose, for supplying high-pressure water through a crimping socket 4. A well-known flexible guide 6 is provided at the tip of the nozzle 31. For details of this flexible guide 6, refer to Japanese Patent Application Laid-Open No. 62-163789.

In addition, if the aforementioned nozzle 31 and the high pressure hose 2 are directly connected through the crimping socket 4, the connection between the connection end 2a of the high pressure hose 2 and the front end face 1a of the nozzle 31 is performed. Since the length L can be set short, the curvature of the high pressure hose 2 in the drain pipe curved part mentioned later can be improved significantly.

On the other hand, as shown in Fig. 15 showing a cross-section line AA of Fig. 14, four injection holes 40, 41, 42, 43 for injecting high-pressure water made of water or hot water are drilled in the outer peripheral surface of the nozzle 31, These injection holes 40, 41, 42, 43 communicate with the inside of the hose 2 via the shaft hole 1b of the nozzle 31 and the hose joint 3, as shown in FIG.

In addition, in the embodiment, as shown in FIG. 15, the size of the diameter of the injection hole 40 located below among the injection holes 40, 41, 42, 43 is different from the injection hole of the same diameter ( 41, 42, 43 are set larger than the diameter, so that the high pressure water of a large flow rate is injected in the injection hole 40 than other injection holes.

In addition, among the other injection holes 41, 42, 43, the injection hole 42 is formed at a position symmetrical with the injection hole 40 about the center O of the nozzle 31, and the injection hole 41, 43 is inclined by 60 degrees in a direction opposite to each other in the circumferential direction with respect to O, and is formed at positions symmetrically with respect to the line segment connecting the injection hole 42 and the center O.

In addition, the sum total of the cross-sectional area of each injection hole 40, 41, 42, 43 is set equal to the sum of the cross-sectional area of the some injection hole formed in the conventional nozzle.

In addition, as shown in FIG. 14, the inclination angle of the central axis I of the injection hole 40 having the large diameter described above with respect to the central axis H of the shaft hole 1b of the nozzle 31 is α = 90 degrees, and the inclination angle of the central axis J with respect to the central axis H of the shaft hole 1b of the nozzle 31 of the other injection holes 41, 42, 43 is similarly set to beta = 90 degrees, respectively. It is.

That is, each center axis I, J of each injection hole 40, 41, 42, 43 is formed perpendicular to the center axis H of the nozzle 31. As shown in FIG.

In this way, the inclination angle α of the large injection hole 40 and the inclination angle β of the other injection holes 41, 42, and 43 are set to the same 90 degrees, and as shown in FIG. 16, in the horizontal drainage pipe 5. In each of the injection holes 40, 41, 42, 43 in the direction perpendicular to the central axis (H) of the nozzle (31). The nozzle 31 is a state in which only a large diameter injection hole 40 is pressed against the inner circumferential surface 5a of the tube by its injection pressures F1, F2, F3, F4 (F1> F2 = F3 = F4) and its component (to be described later). In this horizontal drainage pipe 5, the stationary posture is maintained.

When high-pressure water is injected from each of the injection holes 40, 41, 42, and 43 of the nozzle 31 in this way, as shown in FIG. 17 showing the cross section BB of FIG. 16, the inner circumferential surface of the horizontal drainage pipe 5 The components F2 'and F4' act on (5a), respectively.

At this time, a reaction corresponding to F2 'and F4' acts on the nozzle 31 from the inner circumferential surface 5a of the horizontal drain pipe 5, but the nozzle 31 is in the pipe bottom 5b of the horizontal drain pipe 5 On that reaction,

Satisfy the conditions of F1 <F2 '+ F3 + F4' + mg ... (1),

In addition, as shown in FIG. 18 in which the same parts as in FIG. 17 are designated by the same reference numerals, the nozzle 31 is in the tubular shape 5c.

Set F1, F2 ', F3, F4', mg to satisfy the conditions of F1 <F2 '+ F3 + F4'-mg ... (2).

In addition, mg is a magnetic weight which acts on the nozzle 31, F2 'is a component force which acts in the vertical direction of F2, and F4' is a component force which acts in the vertical direction of F4. In Figs. 17 and 18, F2 " is the component force acting in the horizontal direction of F2, and F4 'is the component force acting in the horizontal direction of F4, and the transverse pipes are caused by respective components acting in the respective horizontal directions. The rotation of the nozzle 31 is prevented in (5).

On the other hand, if F1, F2 ', F3, F4', and mg are set so as to satisfy the above-described formulas (1) and (2) (that is, the formation position of the plurality of injection holes and the high pressure water injected from each injection hole), When the amount of jetting water is adjusted), as shown in FIG. 17, when the nozzle 31 is in the pipe bottom 5b of the horizontal pipe 5, the nozzle 31 is based on the setting condition of Formula (1). Only the injection hole 40 maintains the posture pressed by the pipe bottom 5b.

In addition, as shown in FIG. 18, when the nozzle 31 exists in the tubular shape 5c of the horizontal pipe 5, the nozzle 31 has the injection hole 40 based on the setting conditions of (2). Only the posture pressed by the tubular 5c is maintained.

When each of the above-described setting conditions is satisfied, in the attitude of the nozzle 31 shown in FIG. 17, the high-pressure water jetted from the injection hole 40 having the largest diameter has the largest flow rate and the injection hole 40. ) Closest to the pipe bottom 5b of the cross pipe 5, the solids attached to the pipe bottom 5b of the cross pipe 5 can be efficiently cleaned by the high pressure water jetted from the injection hole 40. have.

In addition, when hot water is used as the high pressure water, the cleaning efficiency is further increased.

In the posture of the nozzle 31 shown in FIG. 18, the high-pressure water jetted from the injection hole 40 having the largest diameter has the highest flow rate, and the injection hole 40 is formed in the tubular shape of the transverse pipe 5. The solids attached to 5c) can be efficiently washed.

Next, the washing | cleaning effect of the drain pipe in the above-mentioned 2nd waste pipe cleaning method and apparatus is demonstrated, and a structure is demonstrated in detail.

19 is a sectional view of principal parts of a piping installation, showing the action of the first drain pipe cleaning device according to the present invention.

The high pressure hose 2 fixedly installed at the rear end of the nozzle 31 is connected to the outlet of the high pressure pump (not shown) via the terminal 20.

The terminal 20 controls the valve for opening and closing the supply of high pressure water from the high pressure pump, withdraw the high pressure hose 2 wound on the drum, winding the high pressure hose 2 to the drum, and rotating the high pressure hose 2. In charge of. In addition, the detail of this terminal 20 is disclosed by Unexamined-Japanese-Patent No. 56-36856.

In order to clean the drain pipe 21, the high pressure water pressurized by the high pressure pump which is not shown in figure is sprayed in each injection hole 40, 41, 42, 43, FIG. 15 of the nozzle 31 attached to the front end of the high pressure hose 2. As shown in FIG. By doing so.

That is, when high-pressure water is injected in a direction perpendicular to the central axis of the nozzle 31, the high-pressure water is perpendicular to the pipe wall of the drain pipe 21 to pulverize and peel off the pipe deposit a. Moreover, propulsion force does not generate | occur | produce along the longitudinal direction of the drain pipe 21, and it maintains a stop state in the position.

Therefore, the nozzle 31 mentioned above can be advanced or retracted in the longitudinal direction of the drain pipe 21 by the withdrawal or withdrawal operation of the high pressure hose 2 which consists of manual or automatic operation.

At the time of advancing or retracting the nozzle 31 in the horizontal pipe 5 of the drain pipe 21, the high pressure hose 2 is connected to the terminal 20 at the initial position of the nozzle 31 shown in FIG. 17. By rotating in one direction, in conjunction with it, the nozzle 31 rotates clockwise around the shaft hole 1b as shown by the arrow.

When the nozzle 31 is rotated, the injection direction of the high pressure water F1, F2, F3, F4 injected from the respective injection holes 40, 41, 42, 43 changes as shown in FIG. In the nozzle 31, the turning force in the direction of the arrow G is generated in the state in which only the injection hole 40 maintains the posture pressed by the tube inner peripheral surface 5a.

In this way, when the turning force in the direction of the arrow G is generated in the state where only the injection hole 40 is held in the nozzle 31 by the tube inner circumferential surface 5a, the nozzle 31 is shown in FIG. As shown in FIG. 18, the injection hole 40 pivots inside the transverse tube 5 while maintaining the posture facing the tube inner peripheral surface 5a at all times, and finally, as shown in FIG. 18, the nozzle 31 has its injection hole 40. ) Reaches a position opposite to the tubular 5c of the transverse pipe 5.

Therefore, as shown in FIG. 18, the high pressure hose 2 shown in FIG. 19 when the injection hole 40 of the nozzle 31 reaches the position which opposes the tubular 5c of the horizontal pipe 5 is shown. When the rotation of the cylinder is stopped, the nozzle 31 stops its rotation while maintaining the posture in which the injection hole 40 faces the tubular 5c of the horizontal pipe 5.

Therefore, as shown in FIG. 18, after stopping the turning in the state which hold | maintains the injection hole 40 of the nozzle 31 facing the tubular 5c of the horizontal pipe 5, the high pressure hose 2 is manually operated. Alternatively, if the ejection operation is automatically performed, the injection hole 40 of the nozzle 31 proceeds along the longitudinal direction of the tube while maintaining the posture opposite to the tubular 5c of the transverse tube 5. Only the inner tube a (FIG. 19) attached to the tubular 5 c can be pulverized and peeled off by depositing the inner tube a (FIG. 19) repeatedly with high pressure water having the largest flow rate injected from the injection hole 40. .

That is, the nozzle 31 described above causes the high pressure water to be injected in a direction perpendicular to the center axis thereof, so that the driving force is not generated in the nozzle 31 itself. Or, it is carried out by the pulling-in operation. Therefore, the repetitive cleaning of the specific position of the drain pipe 21 can be simplified by the drawing out or pulling-in operation of the high pressure hose 2.

Moreover, by rotating the high pressure hose 2 by the terminal 20 (refer FIG. 19) in the position of the nozzle 31 shown in FIG. 18, this nozzle 31 is centered on the shaft hole 1b like an arrow again. Rotation clockwise, the jetting direction of the high-pressure water (F1, F2, F3, F4) sprayed from each jetting hole (40, 41, 42, 43) at the time of rotation thereof, as shown in FIG. Therefore, the nozzle 31 starts turning in the direction of the arrow G in a state in which only the injection hole 40 maintains the posture pressed by the inner circumferential surface 5a of the tube.                 

In this way, when the nozzle 31 starts turning in the direction of the arrow G while maintaining only the injection hole 40 in the posture pressed against the inner circumferential surface 5a of the tube, the nozzle 31 is shown in FIG. Similarly, the injection hole 40 pivots inside the transverse tube 5 while maintaining the posture facing the tube inner peripheral surface 5a at all times, and finally, as shown in FIG. 17, the nozzle 31 has the injection hole 40 It returns to the initial position which opposes the pipe bottom 5b of the horizontal pipe 5.

Therefore, in the transverse pipe 5 of the drain pipe 21 shown in FIG. 19, the high pressure hose 2 is rotated by the terminal 20 as shown in the enlarged view of the main part of FIG. By the drawing operation, the nozzle 31 rotates in a spiral direction in the direction of the arrow G while maintaining the posture in which the injection hole 40 with the highest injection amount is opposed to the inner circumferential surface 5a of the tube, so that the transverse pipe 5 is rotated. The internal deposit adhered to the inner circumferential surface 5a is efficiently pulverized and peeled off by the high pressure water having the largest injection flow rate.

In addition, after stopping the rotation of the high pressure hose 2 to stop the nozzle 31 at a predetermined position, as shown in FIG. 25, the nozzle 31 is removed by the withdrawal or withdrawal operation of the high pressure hose 2. By reciprocating in the direction of arrow G 'while maintaining the posture in which the injection hole 40, which has the largest injection flow rate, is opposed to the inner circumferential surface 5a of the tube, it is attached to a specific position of the inner circumferential surface 5a of the transverse tube 5 One intra-tube deposit is repeatedly washed with high pressure water having the highest injection flow rate and efficiently pulverized and peeled off.

Further, even in the longitudinal pipe not shown, the nozzle 31 rotates circumferentially on the inner circumferential surface of the tube by rotating the high pressure hose 2 at a constant speed and withdrawing the high pressure hose 2.                 

Also in this case, since the injection hole 40 with the highest injection amount is rotated helically while maintaining the posture facing the inner circumferential surface of the longitudinal pipe, the nozzle 31 pulverizes and removes the internal deposits efficiently even in the vertical pipe.

In addition, in the vertical pipe, the rotation of the high pressure hose 2 is stopped to stop the nozzle 31 at a predetermined position, and then the ejection or withdrawal operation of the high pressure hose 2 causes the injection hole 40 having the highest injection volume. ) While maintaining the posture facing the specific position of the longitudinal inner circumferential surface, while reciprocating the nozzle 31, the internal deposit adhered to the specific position on the longitudinal inner circumferential surface is repeatedly cleaned by high-pressure water with the highest injection flow rate and effectively crushed. It can peel.

In addition, as shown in FIG. 14, the nozzle 31 and the high pressure hose 2 are directly connected through the crimping socket 4, and thus, the connection end 2a and the nozzle 31 of the high pressure hose 2 are connected. Since the length L between the front end surface 1a was set short, as shown in FIG. 26, in the curved part 23 of the drain pipe 21, the curvature of the high pressure hose 2 near the nozzle 31, That is, the curvature radius at the time of curvature can be set further smaller, Therefore, the nozzle 31 passes through the curved part 23 of the small diameter drain pipe smoothly, and it efficiently passes through the curved part 23 of such a small diameter drain pipe. It can be washed.

Further, in the above embodiment, it is possible to maintain a posture in which the injection hole 40 with the highest injection amount always faces the inner circumferential surface of the drain pipe, so that the injection hole of the nozzle 31, for example, is shown in FIG. On the outer circumferential surface of the high pressure hose 2 of the portion corresponding to 40, by forming the reference line 30 indicating the position of the injection hole 40 along the longitudinal direction, thus, while rotating the high pressure hose 2, The position of the injection hole 40 can be known with certain position on the inner circumferential surface of the tube.

Therefore, for example, when intensively washing only the tubular shape of a drain pipe, the high pressure hose 2 of the high pressure hose 2 is rotated at the position where the position of the injection hole 40 reached the tubular shape by the reference line 30. When the rotation is stopped and the high pressure hose is drawn out or drawn therefrom, only the tubular shape of the drain pipe can be concentrated.

In addition, in the above embodiment, a case in which four injection holes 40, 41, 42, 43 for injecting high pressure water are drilled in the nozzle 31 is described. However, if the above equations (1) and (2) are satisfied as a whole, The number of the injection holes, the formation position, the size of the diameter, etc. are not limited to the examples, and various modifications are possible.

Further, in the above embodiment, a case has been described in which a fluid such as water or hot water is used as the injection medium injected from each of the injection holes 40, 41, 42, 43 of the nozzle 31. However, the present invention has been described in the above embodiments. It is not limited to this, You may use the mixture of a fluid and gas as an injection medium.

When a mixture of fluid and gas is used as the injection medium in this way, when the injection medium collides with the drainage pipe, the mixed gas is scattered and the cleaning power can be further improved.

In addition, various fluids and gases constituting the injection medium may be used. For example, water or hot water may be used as the fluid, and air may be used as the gas.                 

As described above, in the method and apparatus for cleaning the second drain pipe according to the present invention, the nozzle is piped so that a specific injection hole always faces the inner circumferential surface of the plurality of injection holes in conjunction with the rotation, withdrawal, and withdrawal operation of the high pressure hose. By turning spirally along the inner circumferential surface and setting the diameter of the specific injection hole larger than the diameter of other injection holes, the angle (α) where the central axis I of the specific injection hole and the central axis H of the nozzle meet ), And the angle β where the center axis line J of the other injection hole and the center axis line H of the nozzle meet each other is set at 90 degrees, so that the adherend adhered to the entire circumference of the pipe wall by turning the nozzle is large. Not only can it be pulverized with high-pressure water injected from a diameter injection hole, but also a specific diameter injection hole can be stopped at a specific position in the drain pipe in a position facing the inner circumference of the pipe. It is easy to draw out or draw in a pipe by simply cleaning a certain position in various types of pipes, regardless of horizontal or vertical pipes, with high pressure water sprayed from a specific injection hole with a large diameter. It can be cleaned by.

Fig. 28 is a sectional view showing the main part of the high pressure hose end portion showing the nozzle 51 applied to the third drain pipe cleaning method and apparatus according to the present invention, with the same reference numerals as in Figs.

The nozzle 51 is directly connected to the tip of a high-pressure hose 2 made of a rigid pipe, for example, a stainless hose, for supplying high-pressure water through a crimping socket 4. A well-known flexible guide 6 is provided at the tip of the nozzle 51. For details of this flexible guide 6, refer to Japanese Patent Application Laid-Open No. 62-163789.

In addition, if the aforementioned nozzle 51 and the high pressure hose 2 are directly connected through the crimping socket 4, the connection between the connection end 2a of the high pressure hose 2 and the front end face 1a of the nozzle 51 is performed. Since the length L can be set short, the curvature of the high pressure hose 2 in the drain pipe curved part mentioned later can be improved significantly.

On the other hand, as shown in Figure 29 showing the AA line cross section of Figure 28, four injection holes (60, 61, 62, 63) for injecting high-pressure water consisting of water or hot water is drilled in the outer peripheral surface of the nozzle 51, These injection holes 60, 61, 62, 63 communicate with the inside of the hose 2 via the shaft hole 1b of the nozzle 51 and the hose joint 3, as shown in FIG.

In addition, in the embodiment, as shown in FIG. 29, the size of the diameter of the injection hole 60 located below among the injection holes 60, 61, 62, and 63 is different from the injection hole of the same diameter ( 61, 62, and 63 are set larger than the diameter, so that the high pressure water of a large flow rate is injected in the injection hole 60 than other injection holes.

Also, among the other injection holes 61, 62, and 63, the injection hole 62 is formed at a position symmetrical with the injection hole 60 with the center O of the nozzle 51 as the center, and the injection hole 61, 63 is inclined by 60 degrees in the opposite direction along the circumferential direction with respect to O, and is formed at positions symmetrically with respect to the line segment connecting the injection hole 62 and the center (O).

In addition, the sum total of the cross-sectional area of each injection hole 60, 61, 62, 63 is set equal to the sum of the cross-sectional area of the some injection hole formed in the conventional nozzle.

In addition, as shown in FIG. 28, the inclination angle of the central axis I of the injection hole 60 having the large diameter described above with respect to the central axis H of the shaft hole 1b of the nozzle 51 is α. The inclination of the central axis J with respect to the central axis H of the shaft hole 1b of the nozzle 51 of the other injection holes 61, 62, 63 is set to an acute angle (0 degree <α <90 degrees). The angle β is set to approximately 90 degrees (near vertical).

In addition, as shown in FIG. 28, the formation position of the large injection hole 60 among the above-mentioned injection holes 60, 61, 62, 63 is the advancing direction (arrow B) of the said nozzle 51 From the position of the other injection hole (61, 62, 63) is formed at the rear.

In this way, the inclination angle α of the injection hole 60 having a larger diameter with respect to the central axis H of the shaft hole 1b of the nozzle 51 is set at an acute angle, and the other injection holes 61, 62, and 63 If the inclination angle β degree is set to approximately 90 degrees, as shown in FIG. 30, after inserting into the horizontal drain pipe 5, each high pressure water is sprayed from each injection hole 60, 61, 62, 63. FIG. The nozzle 51 has the components F1 'and F2 of F1 acting vertically toward the inner circumferential surface 5a of the horizontal drainage pipe 5 among the injection pressures F1, F2, F3, and F4 (F1> F2 = F3 = F4), The component force F1 " of F1 parallel to the inner circumferential surface 5a of the transverse drainage pipe 5 in the state where only the injection hole 60 having a large diameter is pressed by the inner circumferential surface 5a by the force of F3 and F4 is the nozzle 51 It acts as a driving force in the direction of the arrow (B).

When high-pressure water is injected from each of the injection holes 60, 61, 62, and 63 of the nozzle 51 in this way, as shown in FIG. 31 showing the cross section of CC line of FIG. 30, the inner circumferential surface of the horizontal drainage pipe 5 In (5a), F1 'and components F2', F4 ', and F3' which are opposite in direction to this F1 'act.

At this time, a reaction corresponding to F2 ', F3, F4' acts on the nozzle 51 from the inner circumferential surface 5a of the horizontal drain pipe 5, but the nozzle 51 acts on the pipe bottom 5b of the horizontal drain pipe 5. If there is that reaction,

Satisfy the conditions of F1 '<F2' + F3 + F4 '+ mg ... (1),

In addition, as shown in FIG. 32 which shows the same part as FIG. 31 with the same code | symbol, when the nozzle 51 is in tubular shape 5c,

F1 ', F2', F3, F4 ', mg are set to satisfy the conditions of F1' <F2 '+ F3 + F4'-mg ... (2).

In addition, mg is a magnetic weight which acts on the nozzle 51, F2 'is a component force which acts in the vertical direction of F2, and F4' is a component force which acts in the vertical direction of F4.

31 and 32, F2 " is the component force acting in the horizontal direction of F2, and F4 " is the component force acting in the horizontal direction of F4, and the transverse pipes are caused by respective components acting in the respective horizontal directions. Rotating of the nozzle 51 is prevented in (5).

On the other hand, if F1 ', F2', F3, F4 ', and mg are set to satisfy the above formulas (1) and (2) (i.e., injection of a plurality of injection hole formation positions and high-pressure water injected from each injection hole) If the amount of water is adjusted), as shown in FIG. 31, when the nozzle 51 is in the pipe bottom 5b of the horizontal pipe 5, the nozzle 51 is based on the setting condition of the formula (1). Only the injection hole 60 maintains the posture pressed by the pipe bottom 5b.

In addition, as shown in FIG. 32, when the nozzle 51 exists in the tubular shape 5c of the horizontal pipe 5, the nozzle 51 is the injection hole 60 based on the setting conditions of (2). Only the posture pressed by the tubular 5c is maintained.

When the above-described setting conditions are satisfied, in the attitude of the nozzle 51 shown in FIG. 31, the high-pressure water jetted from the injection hole 60 having the largest diameter has the largest flow rate and the injection hole 60. ) Closest to the pipe bottom 5b of the cross pipe 5, the solids attached to the pipe bottom 5b of the cross pipe 5 can be efficiently cleaned by the high pressure water jetted from the injection hole 60. have.

In addition, when hot water is used as the high pressure water, the cleaning efficiency is further increased.

In addition, in the attitude | position of the nozzle 51 shown in FIG. 32, the high pressure water sprayed from the injection hole 60 with the largest diameter has the largest flow volume, and this injection hole 60 is the tubular shape of the horizontal pipe 5 The solids attached to 5c) can be efficiently cleaned.

Next, the washing | cleaning effect of the drain pipe in the above-mentioned 2nd waste pipe cleaning method and apparatus is demonstrated, and a structure is demonstrated in detail.

Fig. 33 is a sectional view of a main portion of a plumbing fixture showing the action of the third drain pipe cleaning device according to the present invention, and in particular, wastewater in a specific room from a drain pipe concentration management unit for intensively arranging and managing the rear end side of the drain pipe leading to each room such as an apartment. The state which started washing toward the front end side of the horizontal drainage pipe 5 which communicates with the installation 70 (sink | sink) is shown.

On the front end side of the horizontal drainage pipe 5 communicating with the wastewater installation 70, a sealing water valve 71 is formed in which the drainage pipe 5 is bent, and a certain amount of sealing water 72 stays therein. Outside air, in particular, odors and small animals through the drain pipe 5 are prevented from entering the room.

In FIG. 33, the high pressure hose 2 fixedly installed at the rear end of the nozzle 51 is connected to the outlet of the high pressure pump (not shown) via the terminal 20.

The terminal 20 controls the valve for opening and closing the supply of high pressure water from the high pressure pump, withdrawing the high pressure hose 2 wound on the drum, winding the high pressure hose 2 to the drum, and Is responsible for the rotation. In addition, the detail of this terminal 20 is disclosed by Unexamined-Japanese-Patent No. 56-36856.

In order to clean the drain pipe 21, each injection hole 60, 61, 62, 63 of the nozzle 51 attached to the front-end | tip of the high pressure hose 2 was pressurized by the high pressure pump which is not shown in figure (refer FIG. 29). By spraying at

That is, as shown in FIG. 30, in-pipe attachment adhered to the pipe wall of the horizontal drainage pipe 5 by the injection pressure F1 of the high pressure water sprayed obliquely by the injection hole 60 with the diameter of the nozzle 51 large. By pulverizing and peeling off, the inside of the horizontal drainage pipe 5 is advanced to an arrow B direction by the propulsion force by the component force F1 ", and the sending operation of the high pressure hose 2. As shown in FIG.

At this time, if the high pressure hose 2 is rotated in one direction (clockwise) by the terminal 20 shown in FIG. 33 from the initial position of the nozzle 51 shown in FIG. Reference numeral 51 rotates clockwise about the shaft hole 1b as shown by the arrow.

When the nozzle 51 is rotated, the injection direction of the high pressure water F1, F2, F3, F4 injected from each injection hole 60, 61, 62, 63 changes as shown in FIG. In the nozzle 51, the turning force in the direction of the arrow G is generated in the state in which only the injection hole 60 is maintained in the posture pressed by the tube inner peripheral surface 5a.

In this way, when the turning force in the direction of the arrow G is generated in the state in which only the injection hole 60 is held in the nozzle 51 by the tube inner circumferential surface 5a, the nozzle 51 is shown in FIG. As shown in FIG. 32, the injection hole 60 pivots inside the horizontal pipe 5 while maintaining the posture facing the tube inner peripheral surface 5a at all times, and finally, as shown in FIG. 60 reaches a position opposed to the tubular 5c of the transverse pipe 5.

Therefore, as shown in FIG. 32, when the injection hole 60 of the nozzle 51 reaches the position which opposes the tubular 5c of the horizontal pipe 5, the high pressure hose 2 shown in FIG. When the rotation of the cylinder is stopped, the nozzle 51 stops its rotation while maintaining the posture in which the injection hole 60 faces the tubular 5c of the horizontal pipe 5.

Therefore, as shown in FIG. 32, after stopping the turning in the state which hold | maintains the injection hole 60 of the nozzle 51 facing the tubular 5c of the horizontal pipe 5, the high pressure hose 2 is manually operated. Alternatively, if the ejection operation is automatically performed, the injection hole 60 of the nozzle 51 proceeds along the longitudinal direction of the tube while maintaining the posture opposite to the tubular 5c of the transverse tube 5, and thus the Only the inner tube a (a, FIG. 33) attached to the tubular 5c is repeatedly washed by the high-pressure water F1 having the largest flow rate injected from the injection hole 60, so that the inner tube a can be pulverized and peeled off. do.

In addition, by rotating the high pressure hose 2 by the terminal 20 (FIG. 33) in the position of the nozzle 51 shown in FIG. 32, this nozzle 51 is again clocked around the shaft hole 1b like an arrow. Direction, the jetting direction of the high-pressure water F1, F2, F3, F4 sprayed from each jetting hole 60, 61, 62, 63 at the time of rotation is changed again, as shown in FIG. Therefore, the nozzle 51 starts turning to the arrow G direction in the state which only the injection hole 60 maintains the attitude | position pressed by the pipe inner peripheral surface 5a.

In this way, when the nozzle 51 starts turning in the direction of the arrow G while maintaining only the injection hole 60 in the posture pressed by the inner circumferential surface 5a of the tube, the nozzle 51 is shown in FIG. 37. As shown in FIG. 31, the injection hole 60 pivots inside the horizontal pipe 5 while maintaining the posture facing the tube inner peripheral surface 5a at all times, and finally, as shown in FIG. It returns to the initial position which opposes the pipe bottom 5b of this horizontal pipe 5.

Therefore, in the horizontal pipe 5 of the drain pipe 21 shown in FIG. 33, the high pressure hose 2 is rotated by the terminal 20, FIG. By the drawing out or drawing out operation, the nozzle 51 rotates in a spiral direction in the direction of the arrow G while maintaining the posture in which the injection hole 60 with the largest injection amount is opposed to the inner circumferential surface 5a of the tube. 5) The inner tube surface affixed to the inner circumferential surface 5a is efficiently pulverized and peeled off by the high pressure water having the highest injection flow rate.

By the way, as shown in FIG. 39 which shows the same part as FIG. 30 with the same code | symbol, the nozzle 51 maintains the attitude which opposes the injection hole 60 with the largest injection quantity with respect to the tube inner peripheral surface 5a. When spirally turning along the drain pipe 5 in the direction of the arrow G, the nozzle 51 injects the high-pressure water F1 at an angle obliquely back during that time, and therefore, the nozzle pressure is used in the drain pipe 5 by the injection pressure. The negative pressure is generated in an area (indicated by the arrow D) located in front of the nozzle 51.

On the other hand, among the nozzles 51 described above, in the injection holes 61, 62, and 63 located in front of the injection hole 60, the high-pressure water F2, which is always in a direction substantially perpendicular to the center axis of the nozzle 51, F3, F4 acts as a lid as much as possible to seal the area of the drain pipe 5 (the area indicated by the arrow D) located in front of the nozzle 51, and thus is located behind the nozzle 51. By the high pressure water F1 injected from the injection hole 60, there is a fear that the transfer to the area of the drain pipe 5 (the area indicated by the arrow D) is reduced.

Therefore, the generation of underpressure in the region of the drain pipe 5 (region indicated by arrow D) located in front of the nozzle 51 is eliminated as much as possible.

As shown in Fig. 33, even when the cleaning is started from the drain pipe concentration management unit toward the front end side of the horizontal drain pipe 5 communicating with the waste water facility 70 (sink) in a specific room, the nozzle 51 is placed in front of the nozzle 51. The generation of negative pressure in the region of the drain pipe 5 (the area indicated by the arrow D) that is located is eliminated as much as possible, and thus, the sealing water valve formed on the front end side of the horizontal drain pipe 5 communicating with the wastewater facility 70 ( By sucking the sealing water 72 of 71 to the rear end side of the drain pipe 5, the risk of destroying this valve function is reduced.

Moreover, also in the longitudinal pipe of the drain pipe which is not shown in figure, the nozzle 51 rotates spirally around the inner peripheral surface of a pipe by drawing out by rotating the high pressure hose 2 at a constant speed.

Also in this case, since the injection hole 60 with the largest injection amount is rotated helically while maintaining the posture facing the inner circumferential surface of the longitudinal pipe, the nozzle 51 pulverizes and removes the internal deposits efficiently even in the vertical pipe.

In addition, as shown in FIG. 28, the nozzle 51 and the high pressure hose 2 are directly connected through the crimping socket 4, so that the connection end 2a and the nozzle 51 of the high pressure hose 2 are connected. Since the length L between the front end surface 1a was set short, as shown in FIG. 40, in the curved part 23 of the drain pipe 21, the curvature of the high pressure hose 2 near the nozzle 51, That is, the curvature radius at the time of curvature can be set further smaller, and the nozzle 51 smoothly passes through the curved part 23 of the small diameter drain pipe, and therefore, this curved part 23 of this small diameter drain pipe can be efficiently carried out. It can be washed.

In addition, in the above embodiment, the attitude that the injection hole 60 with the highest injection amount is always opposed to the inner circumferential surface of the drain pipe can be maintained. Therefore, as shown in FIG. 41, for example, the injection hole of the nozzle 51 is shown. On the outer circumferential surface of the high pressure hose 2 of the portion corresponding to the 60, by forming the reference line 30 indicating the position of the injection hole 60 along the longitudinal direction, thus, while rotating the high pressure hose 2, The position of the injection hole 60 can be known reliably at which position of the inner peripheral surface of a pipe | tube.

In addition, in the above embodiment, the case in which the four injection holes 60, 61, 62, and 63 for injecting the high pressure water in the nozzle 51 has been described, is generally satisfied with the above-described formulas (1) and (2). The number of the injection holes, the formation position, the size of the diameter, etc. are not limited to the examples, and various modifications are possible.

In addition, in the above embodiment, a case has been described in which a fluid such as water or hot water is used as the injection medium to be injected from the respective injection holes 60, 61, 62, and 63 of the nozzle 51. It is not limited to this, You may use the mixture of a fluid and gas as an injection medium.

In this way, when a mixture of fluid and gas is used as the injection medium, when the injection medium collides with the drain pipe, the mixed gas is scattered and the cleaning power can be further improved.

In addition, various fluids and gases constituting the injection medium may be used. For example, water or hot water may be used as the fluid, and air may be used as the gas.

As described above, in the third drain pipe cleaning method and apparatus of the present invention, the nozzle is spirally wound so that a specific injection hole is always opposed to the inner circumferential surface of the plurality of injection holes in conjunction with the rotation, withdrawal, and withdrawal operation of the high pressure hose. By turning at the same time, by setting the diameter of the specific injection hole to be larger than the diameter of the other injection hole, the position of the specific injection hole is also formed in the rear than the position of the other injection hole in the direction of travel of the nozzle, The angle α at which the center axis line I of this specific injection hole meets the center axis line H of the nozzle is set at an acute angle, and the center axis line J of the other injection hole and the center axis H of the nozzle are also acute angles. By setting these meeting angles (beta) to about 90 degrees, respectively, the adherent adhered to the entire circumferential wall circumference by turning the nozzle can be efficiently used as a large flow rate of high-pressure water injected from a large diameter injection hole. Not only can it be pulverized but also no negative pressure is generated in the region of the drain pipe located in front of the nozzle, so that it can be efficiently washed without destroying the sealing water valve provided in the drain pipe communicating with waste water facilities such as a sink.

As described above, the drain pipe cleaning method and apparatus according to the present invention are particularly suitable for cleaning horizontal pipes among piping equipment such as drain pipes installed in apartments, buildings, and the like.

Claims (26)

The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, A method for cleaning a drain pipe, in which the nozzle is spirally rotated along the inner circumferential surface of the pipe so that only a certain injection hole of the plurality of injection holes is constantly opposed to the inner circumferential surface of the plurality of injection holes accompanying the rotation and withdrawal of the high pressure hose. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, The nozzle is spirally rotated along the inner circumferential surface of the pipe so as to face only the specific inner circumferential surface of the plurality of injection holes accompanying rotation and withdrawal of the high pressure hose. The specific injection hole diameter is set larger than the other injection hole diameter, An angle α at which the center axis line I of the specific injection hole meets the center axis line H of the nozzle, and an angle at which the center axis line J of the other injection hole meets the center axis H of the nozzle ( A drain pipe cleaning method which is set smaller than β) (α <β). A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the high pressure hose is rotated while rotating the high pressure hose. In the drain pipe cleaning method to be discharged into the inside, and to clean the inside of the pipe by the high pressure water injected from the nozzle, The nozzle is spirally rotated along the inner circumferential surface of the pipe so as to face only the specific inner circumferential surface of the plurality of injection holes in conjunction with the rotation, withdrawal and withdrawal operation of the high pressure hose, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle meet each other, and the The drain pipe cleaning method of setting the angle (beta) where the center axis line (J) and the center axis line (H) of the nozzle meet each other to 90 degrees. A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the high pressure hose is rotated while the high pressure hose is rotated. In the drain pipe cleaning method to be discharged into the inside, and to clean the inside of the pipe by the high pressure water injected from the nozzle, While simultaneously rotating and discharging the high pressure hose, the nozzle is spirally rotated along the inner circumferential surface of the plurality of spray holes so that only certain spray holes face the inner circumferential surface of the pipe. The diameter of the specific injection hole is set to be larger than that of other injection holes, and the position of the specific injection hole is immediately seen in the direction of travel of the nozzle, and is formed behind the position of the other injection hole. The angle α at which the center axis line I of the injection hole meets the center axis line H of the nozzle is set at an acute angle, and the center axis line J of the other injection hole and the center axis line H of the nozzle A drain pipe cleaning method for setting the meeting angle (beta) to 90 degrees, respectively. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, The nozzle is formed along the inner circumferential surface of the pipe so that the injection medium is composed of a mixture of a fluid and a gas, and at the same time the rotation and withdrawal of the high pressure hose is directed so that only a certain injection hole of the plurality of injection holes faces the inner circumferential surface of the pipe. How to wash the drain pipe spirally. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, The nozzle is formed along the inner circumferential surface of the pipe so that the injection medium is composed of a mixture of a fluid and a gas, and at the same time the rotation and withdrawal of the high pressure hose is directed so that only a certain injection hole of the plurality of injection holes faces the inner circumferential surface of the pipe. Drain pipe cleaning method of spiral turning. The diameter of the specific injection hole is set larger than the diameter of the other injection hole, the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle meet, and the center of the other injection hole. The drain pipe cleaning method which sets smaller than ((alpha) <(beta)) the angle (beta) which the axis line (J) and the center axis line (H) of the nozzle meet. A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the high pressure hose is rotated while rotating the high pressure hose. In the drain pipe cleaning method to be discharged into the inside, and to clean the inside of the pipe by the injection medium injected from the nozzle, In the drain pipe cleaning method for cleaning the inside of the pipe by high pressure water, According to the inner circumferential surface of the pipe, the injection medium is composed of a mixture of fluid and gas, and is accompanied by the rotation, withdrawal, and withdrawal operation of the high pressure hose, so that only certain injection holes among the plurality of injection holes face the inner circumferential surface of the pipe. While turning the nozzle spirally, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle meet each other, and the The drain pipe cleaning method of setting the angle (beta) where the center axis line (J) and the center axis line (H) of the nozzle meet each other to 90 degrees. A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the high pressure hose is rotated while rotating the high pressure hose. In the drain pipe cleaning method to be discharged into the inside, and to clean the inside of the pipe by the injection medium injected from the nozzle, The nozzle according to the inner circumferential surface of the pipe so that the injection medium is composed of a mixture of a fluid and a gas, and at the same time the rotational and discharging operation of the high-pressure hose is accompanied by only a certain injection hole among the plurality of injection holes faces the inner circumferential surface of the pipe. While turning spirally, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the position of the specific injection hole is immediately seen in the direction of travel of the nozzle, and is formed behind the position of the other injection hole. The angle α at which the center axis line I of the injection hole meets the center axis line H of the nozzle is set at an acute angle, and the center axis line J of the other injection hole and the center axis line H of the nozzle A drain pipe cleaning method for setting the meeting angle (beta) to 90 degrees, respectively. The method according to any one of claims 1 to 4, A drain pipe cleaning method wherein the high pressure water is hot water. The method according to any one of claims 5 to 8, Said fluid is water or hot water, and said gas is air. The method according to claim 1 or 5, And a diameter of the specific injection hole is set larger than that of other injection holes. The method according to any one of claims 1 to 8, And the nozzle and the high pressure hose are directly connected through a crimp socket. The method according to any one of claims 1 to 8, And a reference line formed on the surface of the high pressure hose to indicate the position of the specific injection hole along the longitudinal direction thereof. A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backwards from a plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, By adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole, only a certain injection hole among the plurality of injection holes is set to face the inner circumferential surface of the pipe at all times, and A method for cleaning a drain pipe, which spirally rotates the nozzle along the inner circumferential surface of the pipe, accompanied by rotation and withdrawal. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, By adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole, only a certain injection hole among the plurality of injection holes is set to face the inner circumferential surface of the pipe at all times, and Accompanied by rotation and withdrawal, the nozzle is spirally rotated along the inner circumferential surface of the tube, The specific injection hole diameter is set larger than the other injection hole diameters, and the angle α at which the center axis line I of the specific injection hole and the center axis line H of the nozzle meet each other is the center axis line of the other injection hole ( J) and the drain pipe cleaning method which sets smaller than ((alpha) <(beta)) which the angle (beta) which the center axis line H of the said nozzle meets. A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the high pressure hose is rotated while rotating the high pressure hose. In the drain pipe cleaning method to be discharged into the inside, and to clean the inside of the pipe by the injection medium injected from the nozzle, By adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole, only a certain injection hole among the plurality of injection holes is set to face the inner circumferential surface of the pipe at all times, and Accompanied by rotation and withdrawal and withdrawal operations, the nozzle is spirally rotated along the inner circumferential surface of the tube, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle meet each other, and the The drain pipe cleaning method of setting the angle (beta) where the center axis line (J) and the center axis line (H) of the nozzle meet each other to 90 degrees. A nozzle is installed at the tip of the high pressure hose, a flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the high pressure hose is rotated while rotating the high pressure hose. In the drain pipe cleaning method to be discharged into the inside, and to clean the inside of the pipe by the injection medium injected from the nozzle, By adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole, only a certain injection hole among the plurality of injection holes is set to face the inner circumferential surface of the pipe at all times, and Accompanying the rotating and dispensing operation, the nozzle is spirally rotated along the inner circumferential surface of the tube, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the position of the specific injection hole is immediately seen in the direction of travel of the nozzle, and is formed behind the position of the other injection hole. The angle α at which the center axis line I of the injection hole meets the center axis line H of the nozzle is set at an acute angle, and the center axis line J of the other injection hole and the center axis line H of the nozzle A drain pipe cleaning method for setting the meeting angle (beta) to 90 degrees, respectively. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, A specific injection hole among the plurality of injection holes is formed by configuring the injection medium with a mixture of fluid and gas, and adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole. A drain pipe cleaning method, wherein the water pipe is set to face the inner circumferential surface of the tube at all times, and the nozzle is spirally rotated along the inner circumferential surface of the pipe in conjunction with the rotation and withdrawal of the high pressure hose. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, A specific injection hole among the plurality of injection holes is formed by configuring the injection medium with a mixture of fluid and gas, and adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole. Always set to face the inner circumferential surface of the tube, accompanied by the rotation and withdrawal of the high pressure hose, spirally rotating the nozzle along the inner circumferential surface of the tube, The specific injection hole diameter is set larger than the other injection hole diameters, and the angle α at which the center axis line I of the specific injection hole and the center axis line H of the nozzle meet each other is the center axis line of the other injection hole ( J) and the drain pipe cleaning method which sets smaller than ((alpha) <(beta)) which the angle (beta) which the center axis line H of the said nozzle meets. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, A specific injection hole among the plurality of injection holes is formed by configuring the injection medium with a mixture of fluid and gas, and adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole. It is always set to face the inner circumferential surface of the tube, accompanied by the rotation, withdrawal and withdrawal operation of the high pressure hose, spirally rotating the nozzle according to the inner circumferential surface of the tube, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the angle α at which the central axis I of the specific injection hole and the central axis H of the nozzle meet each other, and the The drain pipe cleaning method of setting the angle (beta) where the center axis line (J) and the center axis line (H) of the nozzle meet each other to 90 degrees. The nozzle is installed at the tip of the high pressure hose, the flexible guide is connected to the tip of the nozzle, and the high pressure water is injected obliquely backward from the plurality of injection holes provided in the nozzle, and the propulsion force is generated by the injection force to generate the propulsion force. In the drain pipe cleaning method of sending out the high pressure hose into the drain pipe while rotating the high pressure hose, and cleaning the inside of the pipe by the high pressure water injected from the nozzle, The injection medium is composed of a mixture of a fluid and a gas, and by adjusting the formation position of the plurality of injection holes and the amount of injection water of the high pressure water injected from each injection hole, a specific injection hole among the plurality of injection holes. Always set to face the inner circumferential surface of the tube, accompanied by the rotation and delivery operation of the high pressure hose, spirally rotating the nozzle along the inner circumferential surface of the tube, The diameter of the specific injection hole is set to be larger than that of other injection holes, and the position of the specific injection hole is immediately seen in the direction of travel of the nozzle, and is formed behind the position of the other injection hole. The angle α at which the center axis line I of the injection hole meets the center axis line H of the nozzle is set at an acute angle, and the center axis line J of the other injection hole and the center axis line H of the nozzle A drain pipe cleaning method for setting the meeting angle (beta) to 90 degrees, respectively. The method according to any one of claims 14 to 17, A drain pipe cleaning method wherein the high pressure water is hot water. The method according to any one of claims 18 to 21, Said fluid is water or hot water, and said gas is air. The method according to claim 14 or 18, And a diameter of the specific injection hole is set larger than that of other injection holes. The method according to any one of claims 14 to 21, And the nozzle and the high pressure hose are directly connected through a crimp socket. The method according to any one of claims 14 to 21, And a reference line formed on the surface of the high pressure hose to indicate the position of the specific injection hole along the longitudinal direction thereof.

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