JP6383332B2 - Cleaning device in deep well pipe - Google Patents

Description

  The present invention removes dirt in deep well pipes for snow squeezing equipment, industrial use, agricultural use, water supply sources, etc., and in particular, a part of the strainer provided in the deep well pipe is damaged or broken. The present invention relates to a cleaning apparatus capable of cleaning the strainer which is clogged by adhering mud and other foreign matters and which is difficult for water to rise.

  In Japan, there are as many as 1 million deep wells, but the strainers of this deep well pipe are fine and foreign substances such as mud, sand, rust, and algae adhere to it, causing clogging. As a result, it is difficult for water to rise, and the function as a deep well is lost. For example, in the case of a deep well for use in a snow extinguisher, since it is used only in the winter in one year, mud and other foreign substances adhere to the deep well pipe during a period when water is not used. Of course, clogging occurs even in the case of wells that are always used.

  Foreign matter such as adhering mud dries and hardens, causing clogging when used, making it difficult for water to rise. After many years, the strainer was washed when the groundwater flow decreased and the water pressure weakened. By the way, as a conventional method for cleaning the strainer in the deep well pipe, a wire brush is inserted with a ridge, and the wire brush is moved up and down for cleaning, or water is poured into the deep well pipe and pumped. It moves up and down and is washed by water pressure. There is also a method of injecting air into the well pipe for cleaning.

However, it is not possible to remove mud and other foreign substances that have penetrated deep into the strainer by simply rubbing the strainer surface with a wire brush or moving the water in the vertical direction. That is, the clogging that has entered the hole of the strainer cannot be sufficiently eliminated.
Therefore, a cleaning device is known that can spray water at high speed while rotating to remove dirt and eliminate clogging of the strainer.

  For example, “Deep well pipe cleaning method and cleaning apparatus” disclosed in Japanese Patent Application Laid-Open No. 2002-192094 is a cleaning method that can easily and efficiently remove mud and other foreign matters adhering to the inner surface of the deep well. is there. That is, the cleaning device is connected to the tip of the ultra high pressure water hose, the cleaning device is lowered to the deep well together with the hose, and the high pressure water is sprayed from the spray nozzle provided in the cleaning device while being rotated and adhered. Can be removed.

The ultra high pressure water is jetted from the jet nozzle while rotating, and the dirt adhering thereto is removed by hitting the inner surface of the well.
FIG. 3 shows a specific example of a conventional cleaning apparatus for deep well pipes. A rotating body (a) is rotatably attached to the lower end, and a plurality of injection nozzles (robots) are provided on the outer periphery of the rotating body (a). ), (B) ... are attached.

A guide frame (c) is provided above the injection nozzles (b), (b). The above injection nozzles (B), (B),... Can be sprayed onto the inner surface of the well pipe while rotating, and spray nozzles (B), (B) ... Try to tilt, but the provision of the guide frame (c) prevents the spray nozzles (b), (b). The high-pressure water flows through the central pipe (d) and is ejected from the ejection nozzles (b), (b).
Here, the guide frame (c) has a plurality of guide frames and has a cylindrical shape with a space between them, and has a shape that fits inside the deep well pipe.

On the other hand, even if high-pressure water is injected from the injection nozzles (b), (b) ..., the injected high-pressure water diffuses, and high-pressure water is sprayed on the inner surface of the deep well at a pinpoint. Ambient pressure will drop.
"Cleaning method and cleaning apparatus in deep well pipe" according to JP-A-2002-192094

  Thus, the conventional cleaning method has the above-described problems. The problem to be solved by the present invention is this problem. The high-pressure water sprayed from the spray nozzle not only directly hits but also the high-pressure water sprayed to the surroundings, that is, the pressure does not escape. A cleaning device for a deep well pipe having a shielding plate attached thereto is provided.

  The cleaning apparatus used in the cleaning method according to the present invention includes an injection nozzle that injects water at a high speed, and this injection nozzle can rotate around a main axis. In other words, the jet nozzle can be rotated by the reaction force by jetting water at a high speed. And the washing | cleaning apparatus is connected with the lower end of the high pressure hose extended from an ultra-high pressure washing vehicle, High pressure water can be sent to this washing | cleaning device from an ultra-high pressure washing vehicle, and it can inject, rotating from an injection nozzle. This method is common with the conventional method.

  The cleaning device for a deep well pipe of the present invention includes a shielding plate in addition to the injection nozzle, the shielding plate is mounted above the injection nozzle, and a plurality of the shielding plates are provided at a predetermined interval. . The shielding plate has a disk shape and is sized close to the inner surface of the deep well pipe. The material of the shielding plate is not limited, but is generally a shape in which both surfaces of the rubber plate are sandwiched between metal plates (for example, stainless steel plates). The outer periphery of the rubber plate is exposed on the outer periphery so that the deep well tube is not damaged even if it contacts the inner surface of the deep well tube.

In the cleaning device of the present invention, high-pressure water is sprayed from a spray nozzle attached to the lower end of the cleaning device, and mud, sand, and dirt attached to the inner surface of the deep well pipe are removed by the high-pressure water. In the cleaning device, a disc-shaped shielding plate is attached above the spray nozzle, so that high-pressure water sprayed from the spray nozzle is shielded by the shield plate. Therefore, the inside of the deep well pipe is partitioned by the shielding plate, the water pressure in the deep well pipe below the shielding plate is increased, and the dirt adhering to the inner surface is removed. In particular, sand and mud that have entered the hole of the strainer can be removed.
That is, by making the shielding plate a double or triple structure, the conveying ability of the swirling water flow of high-pressure water sprayed from the spray nozzle is remarkably improved.

  Since a plurality of shielding plates are attached to the cleaning device at predetermined intervals, the pressure drop in the deep well pipe is suppressed by the high-pressure water sprayed from the spray nozzle, and a plurality of disk-shaped shields The cleaning device is positioned and guided by the plate approaching or coming into contact with the inner surface of the deep well tube and does not tilt. And since the rubber plate is exposed on the outer periphery of the shielding plate, the inner surface of the deep well pipe is not scratched by the shielding plate.

Schematic showing a state of inserting into a deep well pipe and cleaning. The specific example which shows the washing | cleaning apparatus based on this invention. A specific example of a conventional cleaning apparatus.

  FIG. 1 is a schematic view showing a deep well cleaning method according to the present invention. In the figure, reference numeral 1 denotes a deep well pipe, 2 denotes a cleaning apparatus, and shows a cleaning operation in which the cleaning apparatus 2 is lowered onto the deep well pipe 1 to remove dirt adhering to the strainer 3 of the deep well pipe. The cleaning device 2 rewinds the high-pressure hose 4 wound around the drum of an ultra-high pressure cleaning vehicle (not shown), and winds around the pulley arranged just above the deep well tube 1 so that the high-pressure hose 4 is deep tube It goes straight down into the inside of 1.

  A strainer 3 is provided in a part of the deep well pipe 1, and the strainer 3 has a structure in which groundwater can enter the deep well pipe 1. Here, the strainer structure is not particularly limited, but the strainer 3 has a cylinder having a large number of small holes 5, 5... And a plurality of pillow wires extending in the vertical direction on the outer periphery of the cylinder. (Not shown) are provided at equal intervals, and windings (not shown) are wound around the outer periphery of the pillow wire leaving a slight gap therebetween.

  Therefore, the groundwater can flow into the deep well pipe through a slight gap formed in the strainer 3. The strainer 3 provided in a part of the deep well pipe 1 is particularly contaminated, and the slight gaps of the windings and the small holes 5, 5... Are clogged with mud and sand. So as not to flow into the deep well pipe 1. Therefore, by spraying high-pressure water from the spray nozzles 6, 6... Of the cleaning device 2, mud and sand clogged in the holes 5, 5. Can be removed.

The cleaning device 2 is attached to the lower end of the high-pressure hose 4, and the cleaning device 2 is provided with a plurality of injection nozzles 6, 6... Can be washed off.
And the washing | cleaning apparatus 2 of this invention has attached the upper shielding board 7 and the lower shielding board 8 other than the spray nozzle 6,6 ... of a lower end.

  FIG. 2 is a specific example showing the cleaning device 2. The cleaning device 2 is connected to the lower end of the high-pressure hose 4, but has a central tube 9 at the center, and a rotating body 10 having the injection nozzles 6, 6 attached to the lower end of the central tube 9. It is attached so that it can rotate. The plurality of injection nozzles 6, 6... Are provided at positions where reaction forces when high-pressure water is injected are balanced. The jet nozzles 6, 6... Can be rotated together with the rotating body 10 by spraying in an obliquely outward direction.

Here, the specific mounting structure of the rotating body 10 is not particularly limited, and the injection nozzles 6, 6... Are attached to the four directions of the rotating body 10 and extend obliquely outward.
The present invention is not limited to the specific form and structure of the injection nozzle 6. Further, the mounting structure of the injection nozzles 6, 6... Is not limited to the obliquely outward direction (direction slightly inclined with respect to the radial direction).

  For example, when the jet nozzles 6, 6... Are mounted with their positions shifted from the center of the rotary body 10, the rotary body 10 rotates in a predetermined direction by the reaction force of water jetted from the jet nozzles 6, 6. To do. Therefore, the four spray nozzles 6, 6... Can rotate and spray water uniformly on the inner surface of the deep well tube 1 to wash the strainer and wash the clogged mud and sand. Can be dropped.

By the way, a lower shielding plate 8 is attached above the rotating body 10 to which the injection nozzles 6, 6... Are attached, and an upper shielding plate 7 is attached further upward. The upper and lower shielding plates 7 and 8 have a disk shape, and the size (diameter) is an outer diameter dimension that can be fitted into the deep well tube 1.
Although the specific structure of the upper and lower shielding plates 7 and 8 is not limited, the rubber disc 11 can be sandwiched between the metal plates 12 and 12. The outer diameters of the metal plates 12 and 12 are smaller than that of the rubber disc 11, and the outer peripheral portion of the rubber disc 11 is exposed on the outer periphery, so that the outer periphery of the rubber disc 11 is on the inner surface of the deep well tube 1. I try to make contact.

  As shown in FIG. 1, the cleaning device 2 is inserted into the deep well pipe 1 and lowered deeply, and rotates while jetting high-pressure water from the jet nozzles 6, 6. It is possible to remove the dirt clogged with 5, 5. Since the upper and lower shielding plates 7 and 8 are attached to the upper part of the cleaning device 2, the high-pressure water to be sprayed is blocked by the upper and lower shielding plates 7 and 8 and does not rise upward. Therefore, a decrease in the water pressure that rises with the injection of high-pressure water is suppressed, and the dirt adhering to the strainer 3 is easily removed. In particular, since the cleaning device 2 of the present invention has the two upper and lower shielding plates 7 and 8 attached thereto, the effect of suppressing a decrease in water pressure is great.

  On the other hand, since the cleaning device 2 of the present invention has the upper shielding plate 7 and the lower shielding plate 8 attached to the central tube 9 at a predetermined interval, the cleaning device 2 that has entered the deep well tube 1 is positioned. That is, the cleaning device 2 is balanced so as not to tilt due to the reaction force of the high-pressure water sprayed from the plurality of spray nozzles 6, 6..., But the upper shielding plate 7 and the lower shielding plate 8 are spaced at a predetermined interval. The cleaning device 2 is positioned without tilting.

  The upper shielding plate 7 and the lower shielding plate 8 shown in FIG. 2 have a structure in which a rubber disc 11 is sandwiched between metal plates, but a plurality of spring plates that are bent and deformed are attached to the surface of the metal disc. The spring plate may be configured to protrude slightly outward from the outer periphery of the shielding plate. In this case, the spring plate can guide the cleaning device 2 and prevent damage to the deep well tube 1.

DESCRIPTION OF SYMBOLS 1 Deep well pipe 2 Cleaning apparatus 3 Strainer 4 Super high pressure water hose 5 Hole 6 Injection nozzle 7 Upper shielding board 8 Lower shielding board 9 Central pipe
10 Rotating body
11 Rubber disc
12 Metal plate

Claims (3)

In the apparatus for cleaning deep well pipes, a central pipe is connected to the tip of a high-pressure hose that supplies high-pressure water, and a rotating body with a plurality of injection nozzles attached to the lower end of the central pipe is attached so that it can rotate. A plurality of shielding plates are attached at predetermined intervals above the spray nozzle so that the pressure of the high-pressure water sprayed from the spray nozzle acts on the surroundings without escaping, and the cleaning device does not tilt , The shielding plate is a rubber disc sandwiched between metal plates having a small outer diameter so that the rubber disc is exposed on the outer periphery, and has an outer diameter dimension that can be fitted into a deep well pipe. Cleaning equipment in deep well pipes. 2. The cleaning apparatus for deep well pipes according to claim 1, wherein the shielding plate comprises an upper shielding plate and a lower shielding plate. The cleaning apparatus for deep well pipes according to claim 1 or 2, wherein plate springs that are bent and deformed are attached to the shielding plate at a plurality of locations, and the plate springs are attached so as to project outward from the outer periphery of the shielding plate.

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