JP3090843B2 - Collection device for foreign matter in pipeline - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for collecting foreign matter in a pipeline.

[0002]

2. Description of the Related Art In a pipeline such as a water supply system, foreign matters such as sand may be mixed in, and it is necessary to collect the foreign matter outside the pipeline. Conventionally, as an apparatus for collecting such foreign matter, there is an apparatus provided with a strainer in the middle of a pipe. Alternatively, a pipe for collecting foreign matter is provided in the middle of the pipe by increasing the diameter of a part of the pipe to form a pool of foreign matters and discharging the collected foreign matter from the branch to the outside of the pipe. Is common.

[0003]

However, in such a conventional apparatus, there is a problem that a fixed structure such as a strainer or a foreign matter collecting pipe must be provided in the middle of the pipe. In the case of the strainer type, the strainer must be removed from the pipeline in order to collect foreign substances, which requires man-hours.In addition, in the case of the foreign substance collection pipe, a large amount of fluid in the pipeline along with foreign substances is wasted outside the pipeline. There is a problem that it is discharged to the public.

Therefore, the present invention solves such a problem, and does not require a special fixing structure to be arranged in the middle of the pipeline, does not require much man-hours for collecting foreign matter, and furthermore, the outside of the pipeline. It is an object of the present invention to propose an apparatus for collecting foreign matter in a pipe in which almost no discharge of the fluid in the pipe occurs.

[0005]

In order to achieve the above object, the present invention is directed to a first and a second branch provided in a pipeline, and at least an upstream side of the first and the second branch. A branch pipe that is installed at a branch portion and is capable of accumulating foreign matter flowing along the bottom of the pipeline at the bottom of a double body formed around a main pipe that forms a horizontal pipeline. A bypass pipe that is passed between the first branch section and the second branch section and that allows fluid in the pipe to pass along with foreign matter from the bottom of the swelling body; A press trainer provided to collect relatively large foreign matter, and a pump mounted on the moving vehicle and capable of being installed in the middle of a bypass pipe downstream of the press trainer and for transferring the fluid With foreign matter collection device provided with One in which the.

[0006]

According to such a configuration, the bypass pipe is connected to the existing first and second branch portions provided for a fire hydrant or the like, and the mobile pipe-mounted foreign matter is connected to the bypass pipe. By installing the recovery device, the fluid in the pipeline is passed through the bypass pipeline, and foreign matter mixed in the fluid is recovered.

[0007] At this time, a branch pipe provided with a swelling body is installed at the diverging portion, and foreign matters accumulated at the bottom of the swelling body are also passed through the bypass pipe. In addition, relatively large foreign matters, particularly foreign matters accumulated at the bottom of the swollen body, are collected by the press trainer in front of the foreign matter collection device. For this reason, it is possible to prevent a situation in which such a large foreign substance enters the pump in the foreign substance recovery device and damages the pump.

[0008] Then, without placing a special fixed structure in the middle of the pipeline, the foreign matter collection device mounted on the moving vehicle can be moved toward the vicinity of the pipeline when necessary and installed. Is collected. Therefore, there is no need to take out the strainer or the like from the inside of the pipe. Since the foreign matter collection device is mounted on a moving vehicle, a single device can collect foreign matter at a plurality of pipelines and at a plurality of positions in a pipeline network. Further, since the fluid in the pipeline is returned to the pipeline through the bypass pipeline, the fluid constitutes a closed circuit as a whole, and discharge of the fluid in the pipeline to the outside of the pipeline is prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2, reference numeral 11 denotes a water supply pipeline network formed in an urban area or the like. One or a plurality of connecting pipes 12 that connect the pipe network 11 to the outside are connected to the pipe network 11. The pipe network 11 and the connecting pipe 12 have a plurality of hydrants 13,.
… Are provided at appropriate places. These hydrants
13 and the on-off valve 14 are located between the pair of fire hydrants 13 and 13.
Is often installed in the form of a compartmentalized water dispenser in a configuration in which is disposed. Reference numeral 16 denotes a foreign matter recovery device based on the present invention, and includes a pair of fire hydrants 13, 13 between the pipe network 11 and the connecting pipe 12, which sandwich the on-off valve 14 that constitutes the above-mentioned water meter. Connected across.

FIG. 1 shows a detailed configuration of the foreign matter collecting device. Here, 17 is a pipeline constituting the pipeline network 11, and has a pair of fire hydrants 13A and 13B constituting a branch portion,
An open / close valve 14,... Is provided between the fire hydrants 13A, 13B. Bypass line between both fire hydrants 13A and 13B
18 is routed alongside line 17 and this bypass line 18
For example, it is constituted by a relatively soft polyethylene tube or the like.

A fire hydrant 13A on the upstream side of the bypass pipe 18
Is provided with a branch pipe 19 for collecting foreign matter in the pipeline. As shown in FIG. 3, the branch pipe 19 has a horizontal main pipe 20 formed to have the same diameter as the pipe body of the pipe 17 and forms a part of the pipe 17, and a spiral shape covering the periphery of the main pipe 20. And a swelling body 21 formed in a double structure. The swelling body 21 has a connecting part 22 extending upward and a spiral part 23 formed around the main pipe 20, and through a communication hole 24 formed at the bottom of the main pipe 20, the bottom of the main pipe 20 and Spiral part 23
Are communicated with each other. Therefore, the relatively large and heavy foreign matter 25 flowing along the pipe 17, that is, the bottom of the main pipe 20, settles at the bottom of the spiral part 23 through the communication hole 24 and accumulates therein. FIG. 4 shows another example of the branch pipe 19. Here, the swollen body 21 has a circular cross section and is arranged concentrically around the main pipe 21.

The foreign matter collecting device 16 is provided in the middle of the bypass pipe 18. The foreign matter collecting device 16 is a mobile type, and a pump 28 and a strainer 29 that removes a relatively small foreign matter that can pass through the pump 28, that is, a foreign matter, on a bed of a moving vehicle 27 such as a truck or a traveling cart.
And a filter 30 for removing fine turbidity are connected in this order from the upstream side to the downstream side.
The filter 30 is configured by a ceramic filter, an organic film, or the like. Further, the strainer 29 and the filter 30 have a replaceable cassette structure.

Between the fire hydrant 13A on the upstream side and the pump 28 of the foreign matter collecting device 16, a press trainer which can be installed on the ground is provided.
32 are provided. The press trainer 32 collects relatively large and heavy foreign matter in front of the foreign matter collecting device 16 to prevent such foreign matter from being sent to the pump 28 and damaging the pump 28. is set up.

The press trainer 32 is constituted by, for example, a so-called Y-shaped strainer shown in FIG. In FIG. 4, reference numeral 33 denotes a screen constituted by a cylindrical wire mesh or the like. Water 34 in the pipe passes through the screen 33 and flows to the foreign matter collecting device 16 on the downstream side. The aforementioned pump 28
The relatively small foreign matter and turbidity that can pass through the screen pass through the screen 33 together with the water 34 in the pipe. On the other hand, only the relatively large and heavy foreign matter 37 such as the foreign matter 25 accumulated at the bottom of the spiral part 23 is removed from the screen 33.
And is prevented from flowing into the pump 28 as described above. The foreign substances 37 accumulated in the screen 33 are discharged to the outside by opening the stopper 35. When the lid 36 is opened, the screen 33 itself can be washed or replaced.

The bypass pipe 18 and the fire hydrants 13A and 13B
They are connected to each other by joints 38 that can be disassembled and assembled. Therefore, by closing the fire hydrants 13A and 13B and disassembling the joints 38 and 38, the soft pipe body and the press trainer 32 constituting the bypass conduit 18 are placed on the bed of the moving vehicle 27. Thus, it can move together with the moving vehicle 27.

In such a configuration, when collecting foreign matter in the pipeline network 11, the moving vehicle 27 is connected to both hydrants 13A and 13B.
Then, the bypass pipe 18 and the press trainer 32 are lowered from the bed of the moving vehicle 27 and connected to the fire hydrants 13A and 13B by the joints 38 and 38. And both hydrants 13
The on-off valves 14,... Between A and 13B are closed.

FIG. 2 schematically shows a state in which the foreign matter collection device 16 is connected between the pair of fire hydrants 13A and 13B with the closed on-off valve 14 interposed therebetween. In this state, when the on-off valve 14 in each connecting pipe 12 is closed, the pipeline network
A closed system is constructed at 11. Then, the pump 28 is operated to flow the water in the pipeline network 11 into the bypass pipeline 18. Then, along with the water, foreign matter contained in the water, foreign matter 25 accumulated at the bottom of the bulging body 21 of the branch pipe 19, and the like also flow through the bypass conduit 18.

In the bypass line 18, first, a press trainer
Foreign matter accumulated at the bottom of the swelling body 21 due to 32
A relatively large and heavy foreign matter 37, such as 25, is trapped, preventing such foreign matter 37 from flowing into the pump 28 and causing damage to the pump. Relatively small foreign substances, that is, contaminants that have passed through the pump 28 are collected by the strainer 29. Then, the fine turbidity that has passed through the strainer 29 is completely collected by the filter 30.

In this way, the inside of the pipeline network 11 is cleaned over a wide area, and large and small foreign substances are reliably and efficiently collected. At this time, it is only necessary to connect the bypass pipe 18 to the pipe 17, and it is possible to collect foreign substances without having to arrange a special fixed structure in the middle of the pipe. There is also an advantage that foreign substances can be collected in a closed system without discharging water in the pipeline to the outside.

When the operation of collecting the foreign matter in the pipeline in the illustrated portion is completed, if necessary, the foreign material in the pipeline is similarly collected in one or more other portions of the pipeline network 11. By doing so, it is possible to almost completely collect foreign matter in the pipeline over the entire area of the pipeline network 11. In this case, the joints 38, 38 are disassembled, and the soft pipe, the press trainer 32, and other devices constituting the bypass conduit 18 are accommodated on the bed of the moving vehicle 27, and the By the movement, the foreign matter collecting device 16 is moved toward another portion of the pipeline network 11 together with the bypass pipeline 18 and the press trainer 32. In the illustrated example, the press trainer 32 is installed on the ground. However, the press trainer 32 may be installed on the bed of the moving vehicle 27 in the same manner as other devices.

[0021]

As described above, according to the present invention, a bypass pipe is provided between the first branch and the second branch in the pipe, and a vehicle-mounted type is provided in the middle of the bypass pipe. Since the mobile foreign matter collection device is provided, the foreign matter collection device can be placed in the vicinity of the pipeline when necessary without having to arrange a special fixed structure in the middle of the pipeline by passing the fluid in the pipeline through the bypass pipeline. It is possible to collect foreign matter in the pipeline simply by moving it to the position, and it is not necessary to remove the strainer from the pipeline. It is possible to collect foreign substances in a plurality of conduits with one apparatus. Since the fluid in the pipeline is returned into the pipeline through the bypass pipeline, a closed circuit can be formed as a whole, and discharge of the fluid in the pipeline to the outside of the pipeline can be prevented.
Moreover, a branch pipe provided with a swelling body is installed at the diverging part, and foreign matter accumulated at the bottom of the swelling body can be passed through the bypass pipe, and at the bottom of the swelling body. Relatively large foreign matter such as accumulated foreign matter can be collected by the press trainer in front of the foreign matter collection device.
For this reason, it is possible to prevent a situation in which such a large foreign substance enters the pump in the foreign substance recovery apparatus and damages the pump.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus for collecting foreign matter in a pipeline according to one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an example of a pipeline network to which the apparatus for collecting foreign matter in a pipeline of FIG. 1 can be applied;

FIG. 3 is a cross-sectional view of an example of a branch pipe used in the apparatus of FIG.

FIG. 4 is a cross-sectional view of another example of the branch pipe used in the apparatus of FIG.

FIG. 5 is a sectional view of an example of the press trainer in FIG. 1;

[Explanation of symbols]

 13 Fire hydrant (branch) 13A Fire hydrant (branch) 13B Fire hydrant (branch) 16 Foreign matter collection device 17 Pipe line 18 Bypass line 19 Branch pipe 20 Main pipe 21 Swelling body 28 Pump 32 Press trainer

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minoru Shiramizu 33-4 Unoki, Sayama City, Saitama Prefecture (72) Inventor Hiroshi Miyamoto 2-47 Shishitsuhigashi, Namiwa-ku, Osaka-shi, Osaka (58) Kubota Corporation (58 ) Surveyed field (Int.Cl. ⁷ , DB name) B08B 9/06 E03B 7/00

Claims (1)

(57) [Claims] 1. A first and a second branch provided in a pipeline, and at least an upstream branch of the first and the second branch, installed along a bottom of the pipeline. Between the first branch portion and the second branch portion, the branch pipe being capable of accumulating foreign matter flowing therethrough at the bottom of the double body formed around the main pipe constituting the horizontal pipeline. A bypass pipe that is interposed therebetween and allows the fluid in the pipe to pass along with foreign matter from the bottom of the swelling body, and a press trainer that is provided in the bypass pipe and collects relatively large foreign matter. A foreign matter collection device that is mounted on a moving vehicle and that can be installed in the middle of a bypass pipe downstream of the press trainer, and that includes a pump for transferring the fluid. A device for collecting foreign matter in the pipeline.