JP2020176507A - Joint pipe, joint pipe with valve - Google Patents

Abstract

The present invention provides a joint pipe and a joint pipe with a valve that prevent solid content from accumulating in waste water and facilitate maintenance of a valve body. [Solution] A tubular joint pipe that connects a cylindrical first drain pipe and a second drain pipe, wherein the first drain pipe is connected from one end side so as to be in contact with the outer peripheral surface of the first drain pipe. a first engaging portion into which the first drain pipe is inserted; and a second engaging portion into which the second drain pipe is inserted from the other end so as to be in contact with an inner circumferential surface of the second drain pipe. the first engaging part has an inner diameter on the other end side that is the same as or larger than the inner diameter of the first drain pipe, and detachably supports a valve body that opens and closes the opening end on the other end side. It is characterized by having a valve mounting part. [Selection diagram] Figure 1

Description

The present invention relates to a joint pipe connecting drainage pipes and a joint pipe with a valve.

In recent years, so-called guerrilla rainstorms, in which a large amount of precipitation occurs in a short period of time, are likely to occur due to abnormal weather caused by global warming. When such a guerrilla rainstorm occurs, a large amount of rainwater may flow into the drainage pipe, and drainage exceeding the amount of water that can be drained may flow back. If the drainage flows back into the drainage pipe, there is a concern that it will be difficult to drain the drainage from the toilet or bathroom of a building such as a general house.

In order to prevent the drainage flowing back in the drainage pipe from reaching the drainage facility of the building, a check valve is provided in the water passage portion of the drainage pipe of the building. For example, Patent Document 1 discloses a backflow prevention device provided with a valve having rubber elasticity in a pipeline.
Further, Patent Document 2 discloses a basin with a check valve, which is a dedicated drainage mass to which a valve body can be attached.

Japanese Unexamined Patent Publication No. 2016-199943 JP-A-2010-126888

However, in the backflow prevention device disclosed in Patent Document 1, a step (harmful step) for receiving the edge of the valve body is formed on the inner peripheral surface of the tubular main body through which drainage flows. There was a possibility that filth such as solids contained in the wastewater would accumulate and hinder the flow of the wastewater. Furthermore, there is a risk that the valve will not be driven due to the sticking of accumulated dirt. In addition, there is a risk that the valve will not close completely during backflow due to the accumulated and fixed filth.
Further, in this backflow prevention device, since the valve body is fixed to the tubular main body, it is difficult to remove the valve body, so that there is a problem that maintenance of the valve body is difficult.

On the other hand, the box with a check valve disclosed in Patent Document 2 does not have a structure in which the valve can be easily attached and detached. Therefore, the optimum valve is selected, attached and replaced according to the hydraulic performance during normal use. It was not possible to replace it due to damage to the valve.

The present invention has been made in consideration of such circumstances, and provides a joint pipe and a joint pipe with a valve that prevent the accumulation of solid content in wastewater and facilitate the maintenance of the valve body. With the goal.

In order to solve the above problems, the present invention proposes the following means.
That is, the joint pipe of the present invention is a tubular joint pipe that connects the first drain pipe and the second drain pipe having a cylindrical shape, and is in contact with the outer peripheral surface of the first drain pipe. The first engaging portion into which the first drain pipe is inserted from one end side and the second engagement portion into which the second drain pipe is inserted from the other end side so as to be in contact with the inner peripheral surface of the second drain pipe. A valve body having a joint portion and having an inner diameter of the other end side of the first engaging portion equal to or larger than the inner diameter of the first drain pipe, and opening and closing the open end portion on the other end side. It is characterized by having a valve mounting portion for detachably supporting.

Further, in the present invention, the inner peripheral surface on the other end side of the first engaging portion and the inner peripheral surface of the first drainage pipe may form at least surfaces in which the bottom portions are continuous with each other. ..

Further, in the present invention, the inner peripheral surface on the other end side of the first engaging portion and the inner peripheral surface of the first drainage pipe may form continuous surfaces over the entire circumference. Good.

Further, in the present invention, the first drainage pipe is arranged on the upstream side of the second drainage pipe in the outflow direction of drainage, and the inner diameter of the other end side of the first engaging portion is the second. It may be smaller than the inner diameter of the drainage pipe.

Further, in the present invention, the open end portion may be formed so as to be inclined with respect to the diameter direction.

Further, in the present invention, the second engaging portion may be formed with a packing in contact with the inner peripheral surface of the second drainage pipe.

Further, in the present invention, the second drainage pipe is a branch drainage pipe that branches into two hands, and the second engaging portion is connected to one of the branch destinations at the branch portion of the branch drainage pipe. You may be.

The joint pipe with a valve of the present invention is characterized by having the joint pipe described in each of the above items and a valve body attached to the valve mounting portion.

Further, in the present invention, the valve body may be formed with a handle to be held when the valve body is attached to the valve attachment portion.

According to the present invention, it is possible to provide a joint pipe and a joint pipe with a valve that prevent the accumulation of solid content in the wastewater and facilitate the maintenance of the valve body.

It is an external perspective view which shows the joint pipe with a valve which is 1st Embodiment of this invention. It is sectional drawing which shows the cross section along the longitudinal direction of the joint pipe with a valve shown in FIG. It is sectional drawing which shows the joint pipe with a valve which is 2nd Embodiment of this invention. It is sectional drawing which shows the joint pipe with a valve which is 3rd Embodiment of this invention. It is sectional drawing which shows the joint pipe with a valve which is 4th Embodiment of this invention. It is sectional drawing which shows the joint pipe with a valve which is 5th Embodiment of this invention. It is a perspective view when the joint pipe with a valve which is 5th Embodiment is seen from the top.

Hereinafter, a joint pipe and a joint pipe with a valve according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that each of the following embodiments is specifically described in order to better understand the gist of the invention, and is not limited to the present invention unless otherwise specified. Further, in the drawings used in the following description, in order to make the features of the present invention easy to understand, the main parts may be enlarged for convenience, and the dimensional ratios of the respective components are the same as the actual ones. Is not always the case.

(First Embodiment)
FIG. 1 is an external perspective view showing a joint pipe with a valve (withdrawing the valve body) according to the first embodiment of the present invention. Further, FIG. 2 is a cross-sectional view showing a cross section of the valved joint pipe shown in FIG. 1 along the longitudinal direction.
In the following description, the valved joint pipe 10 of the present embodiment is provided between the cylindrical first drain pipe 31 on the upstream side and the cylindrical second drain pipe 32 on the downstream side. An example provided will be described.

The joint pipe 10 with a valve of the present embodiment has a joint pipe 11 and a valve body 21 that is detachably attached to the joint pipe 11.
The joint pipe 11 has a substantially cylindrical outer shape, and has a through hole 12 having a substantially circular cross section that penetrates one end 11a side and the other end 11b side. The first engagement pipe 31 is inserted into the through hole 12 from the opening end portion 12a forming one end 11a side of the through hole 12 so as to be in contact with the outer peripheral surface 31u of the first drainage pipe 31. The portion 13 is formed.

The first engaging portion 13 is a portion having an inner diameter of φ1 in which a part of the through hole 12 is expanded by the wall thickness t1 of the first drain pipe 31. That is, assuming that the inner diameter of the opening end 12b forming the other end 11b side of the through hole 12 is φ2, the inner diameter φ1 of the opening end 12a forming the one end 11a side is the same as or better than φ2 + (t1 × 2). Is also slightly larger.

In the following description, the region of the through hole 12 on the opening end 12b side of the back end (step portion) of the first engaging portion 13 is referred to as the other end region E.

With such a configuration, the inner diameter φ2 of the other end region E of the through hole 12 (that is, the inner diameter of the opening end portion 12b) φ2 becomes the same as the inner diameter φ3 of the first drain pipe 31. Therefore, the inner peripheral surface 31n of the first drainage pipe 31 and the inner peripheral surface En of the other end region E of the through hole 12 form the same peripheral surface having no continuous step (harmful step).

As in the present embodiment, the inner peripheral surface En on the other end side (the other end region E) of the through hole 12 with respect to the first engaging portion 13 and the inner peripheral surface 31n of the first drainage pipe 31 are all. In addition to forming surfaces that are continuous with each other over the circumference, for example, the inner peripheral surface En and the first drainage on the other end side (the other end region E) of the through hole 12 from the first engaging portion 13. The inner peripheral surface 31n of the pipe 31 may form a continuous surface at the bottom, and the other portion may have a step due to a difference in inner diameter.

The joint pipe 11 is formed with a second engaging portion 14 into which the second drainage pipe 32 is inserted from the other end 11b side so that the outer peripheral surface 11u and the inner peripheral surface 32n of the second drainage pipe 32 are in contact with each other. ing. The outer diameter φ4 of the joint pipe 11 in the second engaging portion 14 is the same as or slightly smaller than the inner diameter φ5 of the second drain pipe 32. The inner diameter φ2 of the other end region E of the through hole 12 is smaller than the inner diameter φ5 of the second drain pipe 32.

Therefore, when the other end region E of the through hole 12 is directed toward the second drain pipe 32, a step is generated at the opening end portion 12b in the direction in which the inner diameter increases. In such a second engaging portion 14, the forming region overlaps with the first engaging portion 13 in the central axis C direction.

Further, a packing 25 is formed on the outer peripheral surface 11u of the second engaging portion 14 of the joint pipe 11. The packing 25 is, for example, a ring-shaped elastic body formed of water-resistant synthetic rubber or the like. It is preferable to form a groove for holding the packing 25 on the outer peripheral surface 11u of the joint pipe 11.

Such packing 25 is, for example, in the second engaging portion 14, the joint pipe 11 and the second drain pipe 32 from the gap between the outer peripheral surface 11u of the joint pipe 11 and the inner peripheral surface 32n of the second drain pipe 32. Prevents the leakage of wastewater and its odor.

Further, a rib 24 that is folded back so as to wrap around the end edge portion of the second drainage pipe 32 can be formed at the end portion of the joint pipe 11 near one end 11a of the second engaging portion 14. With such a rib 24, for example, the top and bottom (up and down) of the valve body can be visually grasped. In addition, since the rib 24 is caught, the second engaging portion 14 of the joint pipe 11 and the second drain pipe 32 can be engaged with each other without tilting.

A valve mounting portion 22 for detachably supporting the valve body 21 is formed on the other end 11b side of the joint pipe 11. The valve mounting portion 22 is, for example, formed by forming openings 22b and 22b in two protruding plates 22a and 22a protruding apart from each other from the other end 11b of the joint pipe 11.

The valve body 21 opens and closes the open end portion 12b on the other end 11b side of the joint pipe 11, and is a member having a substantially disk shape capable of closing the through hole 12. The valve body 21 includes two projecting plates 21a and 21a that are separated from each other and project outward, and cylindrical engaging pins 21b and 21b formed at the tip portions of the projecting plates 21a and 21a, respectively. Is formed.

The valve body 21 is curved so that the two protruding plates 21a, 21a are close to each other, and the engaging pins 21b, 21b are fitted into the openings 22b, 22b formed in the protruding plates 22a, 22a of the joint pipe 11. By inserting it, it is openably and closably engaged with the open end portion 12b of the joint pipe 11.

The form of engagement between the valve body 21 and the valve mounting portion 22 is not limited to the above-mentioned shape. For example, the valve mounting portion may be a rectangular or circular recess. In this case, the valve body can be installed by hooking the engaging pin of the valve body on the valve mounting portion by forming the engaging pin of the valve body in a U shape in cross section. With such a configuration, the valve body can be attached more easily.

According to the valved joint pipe 10 provided with the joint pipe 11 of the first embodiment of the present invention as described above, in the joint pipe 11 to which the valve body 21 can be attached, the first engaging portion 13 of the through hole 12 The inner diameter φ2 of the other end region E on the other end 11b side and the inner diameter φ3 of the first drain pipe 31 are made the same as each other, and the inner peripheral surface 31n of the first drain pipe 31 and the through hole 12 and others The inner peripheral surface En of the end region E constitutes the same peripheral surface without continuous steps (harmful steps).

As a result, the drainage that has flowed into the joint pipe 11 from the first drainage pipe 31 on the upstream side flows smoothly toward the opening end portion 12b without resistance, and the solid content contained in the drainage is accumulated due to the presence of steps or the like. There is nothing to do. Therefore, it is not necessary to remove the deposits in the joint pipe 11 for a long period of time, and the maintenance cost of the drain pipe can be reduced.

Further, according to the joint pipe 10 with a valve provided with the joint pipe 11 of the first embodiment of the present invention, the valve body 21 can be easily attached to and detached from the joint pipe 11, so that the valve body 21 is removed. It is easy to perform cleaning and replace the valve body 21, and it is possible to reduce the labor and cost related to the maintenance of the valve body.

Further, since the valve body 21 can be easily attached to and detached from the joint pipe 11, the valve body 21 is not provided at the time of installing the joint pipe 11, and then the valve body 21 is additionally provided as needed. This is also easy, and the initial cost for installing the drain pipe can be reduced.

Further, by making the diameter of the valve body 21 as small as the inner diameter φ3 of the first drain pipe 31, even when the valve body 21 is open, the main pipe (not shown) connected to the second drain pipe 32 is reached. The valve body 21 does not protrude. In particular, since the valve mounting portion 22, which is a hinge position for rotatably supporting the valve body 21, can be located on the center side of the inner peripheral surface 32n of the second drain pipe 32, that is, at a position lower along the vertical direction. The stroke of the valve body 21 can be reduced. Further, by tilting the valve body 21 at an angle of 90 ° or less with respect to the longitudinal direction of the first drain pipe 31, drainage is prevented from entering the flow path on the check valve installation side from one flow path. Since it can be used, the valve body 21 can also be used as a drainage rectifying plate.

(Second Embodiment)
FIG. 3 is a cross-sectional view showing a joint pipe with a valve according to a second embodiment of the present invention. In the present embodiment, the same configurations as those in the first embodiment are designated by the same numbers, and duplicate description will be omitted.
The joint pipe 40 with a valve of the present embodiment has a joint pipe 41 and a valve body 21 that is detachably attached to the joint pipe 41.
The joint pipe 41 is formed so that the open end portion 42a of the through hole 42 forming the other end 41b side is inclined with respect to the vertical direction. Specifically, the opening end portion 42a of the through hole 42 is formed so that the length between the lower side and the one end 41a side is shorter than that on the upper side in the vertical direction.

With such a configuration, the valve body 21 rotatably attached to the valve attachment portion 22 is normally suspended vertically in the vertical direction, so that the valve body 21 is hung vertically on the lower side of the opening end portion 42a in the vertical direction. Is always formed with a constant gap G from the valve body 21. When a small amount of drainage flows from the first drain pipe 31 on the upstream side due to such a gap G, the drainage hardly touches the valve body 21 and the drainage flows from this gap G toward the second drain pipe 32. leak. As a result, it is possible to suppress the accumulation of solids and the like in the drainage on the valve body 21 and facilitate the maintenance of the valve body 21.

Further, by forming a gap G between the opening end portion 42a and the valve body 21, in normal use, on one side of the valve body 21 as a boundary between the first drainage pipe 31 and the other side. It is possible to prevent an internal pressure difference from occurring with a second drainage pipe 32.

Contrary to the present embodiment, the inclination of the opening end portion 42a is set so that the length of the through hole 42 below the opening end portion 42a in the vertical direction is longer than that at one end 41a side. It can also be formed. In this case, since the opening end portion 42a is always securely closed by the valve body 21, odor and the like flow back from the second drainage pipe 32 on the downstream side toward the second drainage pipe 32 on the upstream side. Can be prevented.

(Third Embodiment)
FIG. 4 is a cross-sectional view showing a joint pipe with a valve according to a third embodiment of the present invention. In the present embodiment, the same configurations as those in the first embodiment are designated by the same numbers, and duplicate description will be omitted.
In the present embodiment, as the second drainage pipe on the downstream side of the joint pipe 11, a second drainage pipe 35 having one end side branched into two is connected. The second drainage pipe 35 has a first opening 35A and a second opening 35B arranged on a line L1 and a third opening 35C arranged on a direction L2 perpendicular to the line L1. ..

The joint pipe 11 is connected to the second opening 35B of the second drainage pipe 35. In such an embodiment, since the joint pipe 11 can be easily approached from the third opening 35C, for example, the valve body 21 may be additionally attached to the joint pipe 11 later, or the valve body 21 may be removed. Maintenance such as cleaning can be easily performed.

(Fourth Embodiment)
FIG. 5 is a cross-sectional view showing a joint pipe with a valve according to a fourth embodiment of the present invention. In the present embodiment, the same configurations as those in the first embodiment are designated by the same numbers, and duplicate description will be omitted.
In the present embodiment, as the second drainage pipe on the downstream side of the joint pipe 11, a second drainage pipe 35 having one end side branched into two is connected. The second drainage pipe 35 has a first opening 35A and a second opening 35B arranged on a line L3, and a third opening 35C arranged on a direction L4 perpendicular to the line L3. ..

Further, the joint pipe 11 is connected to the second opening 35B of the second drainage pipe 35. The inner diameter φ3 of the first drain pipe 31 constituting the joint pipe 11 is substantially the same as the inner diameter φ5 on the second opening 35B side of the second drain pipe 35, and has a connection form having the same diameter.

Even in such an embodiment, the joint pipe 11 can be easily approached from the third opening 35C. Therefore, for example, the valve body 21 may be additionally attached to the joint pipe 11 later, or the valve body 21 may be removed. Maintenance such as cleaning can be easily performed. Further, since a step (harmful step) in which the inner diameter narrows toward the downstream side does not occur, it is possible to suppress the accumulation of solid content in the drainage between the joint pipe 11 and the second drainage pipe 35. , Maintenance can be facilitated.

Further, if only the joint pipe 11 is provided between the first drain pipe 31 and the second drain pipe 35 and the valve body 21 is retrofitted as needed, the initial cost can be suppressed. , A drainage pipe to which a valve body can be attached can be configured.

(Fifth Embodiment)
FIG. 6 is a cross-sectional view showing a joint pipe with a valve according to a fifth embodiment of the present invention. Further, FIG. 7 is a perspective view of the joint pipe with a valve according to the fifth embodiment when viewed from above.
A second drainage pipe 71 having one end branched into two is connected to the other end 61b forming the downstream side of the joint pipe 61 constituting the valved joint pipe 60 of the present embodiment.

In the joint pipe 60 with a valve of the present embodiment, a valve mounting portion 62 that detachably supports the valve body 51 is formed on the other end 61b side of the joint pipe 61. The valve mounting portion 62 has, for example, a curved slit-shaped insertion groove along the outer peripheral surface 61u formed integrally on the outer side of the outer peripheral surface 61u on the other end 61b side of the joint pipe 61.

On the other hand, the valve body 51 of the present embodiment includes a valve body 52 that rotatably closes the open end of the joint pipe 61 on the other end 61b side, and a valve body base 53 that rotatably supports the valve body 52. Has. The valve body base 53 is attached to an engaging portion 54 made of a curved plate-shaped insertion piece that can be inserted into the slit-shaped insertion groove of the valve attachment portion 62 formed on the other end 61b side of the joint pipe 61. The hollow tubular handle 55 formed so as to project upward is integrally formed with each other. It is preferable that the valve mounting portion 62 and the engaging portion 54 are formed with an engaging claw that is fixed in a state of being engaged with each other and a hole portion into which the engaging claw enters.

As shown in FIG. 6, a triangular guide piece 54a is integrally formed on the upper surface of the curved plate-shaped insertion piece constituting the engaging portion 54. Further, a triangular guide groove 62a capable of receiving the triangular guide piece 54a is formed in the valve mounting portion 62 of the joint pipe 61 into which the engaging portion 54 is inserted.

A general pipe P can be inserted into the handle 55 formed in the shape of a hollow cylinder. Further, an opening 55a is formed at the upper end of the handle 55. For example, a chain or a string can be attached to the opening 55a.

According to the valved joint pipe 60 of the fifth embodiment having such a configuration, when the valve body 51 is newly attached to the other end 61b side of the joint pipe 61 from the state where only the joint pipe 61 is already provided. Work can be done easily. That is, the operator grips the handle 55 of the valve body base 53 and inserts the valve body 51 into the second drain pipe 71 from the third opening 71C side of the vertically extending branch pipe of the second drain pipe 71. The engaging portion 54 of the valve body 51 can be easily inserted and attached to the valve mounting portion 62 of the joint pipe 61.

At the time of mounting such a valve body 51, the valve body 51 is guided to the correct mounting position with respect to the joint pipe 61 by the triangular guide piece 54a and the guide groove 62a, and the valve body is dark even in a narrow drainage pipe. It can be easily installed in the correct position without the troublesome work such as the alignment of the 51. Further, by visually checking the presence or absence of a gap between the triangular guide piece 54a and the guide groove 62a after mounting, it is confirmed whether the engaging portion 54 of the valve body 51 is correctly inserted to the depth of the valve mounting portion 62. You can check.

Further, if the engagement claw and the hole into which the engagement claw enters are formed in the valve mounting portion 62 and the engagement portion 54, the engagement portion of the valve body 51 is generated by the sound when these are engaged with each other. It can be grasped without visually confirming that 54 is correctly inserted all the way into the valve mounting portion 62.

Further, since the handle 55 of the valve body 51 is formed in a hollow tubular shape, the length of the handle 55 can be easily increased by inserting a general hollow pipe P into the handle 55 of the valve body 51. it can. As a result, for example, even when the second drain pipe 71 or the joint pipe 61 is buried at a position deep from the ground surface, the pipe P having the length of the handle 55 extended can be gripped and the joint pipe 61 can be gripped. The engaging portion 54 of the valve body 51 can be easily inserted into and attached to the valve mounting portion 62.

Further, one end side of the chain or string is engaged with the opening 55a formed at the upper end of the handle 55, and the other end side is inside the lid member provided on the third opening 71C side of the second drain pipe 71. By engaging the valve body 51, it is possible to prevent the valve body 51 from flowing out even if the valve body 51 comes off from the valve mounting portion 62 due to a large water pressure due to heavy rain or the like.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention as well as the invention described in the claims and the equivalent scope thereof.

For example, in the above-described embodiment, an example is shown in which both the first drain pipe and the second drain pipe connected to the joint pipe are straight pipes, or the second drain pipe is a bidirectional branch pipe. However, the shape of the drain pipe connected to the joint pipe is not limited to the upstream side and the downstream side, and a drain pipe having an arbitrary shape can be connected and used.

10 ... Joint pipe with valve 11 ... Joint pipe 12 ... Through hole 13 ... First engaging part 14 ... Second engaging part 21 ... Valve body 31 ... First drain pipe 32 ... Second drain pipe

Claims (9)

A tubular joint pipe that connects a first drainage pipe and a second drainage pipe that form a cylinder.
The other end so as to be in contact with the inner peripheral surface of the second drainage pipe and the first engaging portion into which the first drainage pipe is inserted from one end side so as to be in contact with the outer peripheral surface of the first drainage pipe. It has a second engaging portion into which the second drainage pipe is inserted from the side.
The inner diameter of the other end of the first engaging portion is the same as or larger than the inner diameter of the first drain pipe.
A joint pipe characterized by having a valve mounting portion that detachably supports a valve body that opens and closes an open end portion on the other end side. Claim 1 is characterized in that the inner peripheral surface on the other end side of the first engaging portion and the inner peripheral surface of the first drainage pipe form at least a surface in which the bottom portions are continuous with each other. The fitting pipe described in. The claim is characterized in that the inner peripheral surface on the other end side of the first engaging portion and the inner peripheral surface of the first drainage pipe form continuous surfaces over the entire circumference. The joint pipe according to 1. The first drainage pipe is arranged upstream of the second drainage pipe in the outflow direction of drainage, and the inner diameter of the other end side of the first engaging portion is larger than the inner diameter of the second drainage pipe. The joint pipe according to claim 1, wherein the joint pipe is also small. The joint pipe according to claim 1, wherein the open end portion is formed so as to be inclined with respect to the diameter direction. The joint pipe according to claim 1, wherein a packing in contact with the inner peripheral surface of the second drainage pipe is formed in the second engaging portion. The second drainage pipe is a branch drainage pipe that branches into two hands, and the second engaging portion is connected to one of the branch destinations at the branch portion of the branch drainage pipe. The joint pipe according to claim 1. A joint pipe with a valve, which comprises the joint pipe according to claim 1 and a valve body attached to the valve mounting portion. The joint pipe with a valve according to claim 8, wherein the valve body is formed with a handle for holding the valve body when the valve body is attached to the valve attachment portion.

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