JP4017421B2 - In-pipe cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-pipe cleaning apparatus that cleans accumulated soil accumulated in a buried pipe such as a sewer pipe through a shaft.
[0002]
[Prior art]
Conventionally, when cleaning sludge such as deposits or deposits deposited in sewer pipes (hereinafter referred to as “deposited soil”), after draining the water in the sewer pipes, A general method is to enter the sewer pipe, scrape the accumulated soil by the worker's manual work, and suck and collect the scraped sediment by a sludge suction truck stopped on the ground through the suction hose of the worker. Has been adopted.
[0003]
However, relying on human work to clean the sewer pipes in this way has the problem that not only is the work efficiency poor, but the worker is forced to work hard. In order to solve such problems, for example, as disclosed in JP-A-6-17479 and JP-A-6-17480, a traveling body including a manipulator is inserted into a sewer pipe, and this There has been proposed a cleaning device in which a suction nozzle is attached to a manipulator, the deposited soil is sucked by the suction nozzle, and the deposited soil is sucked and collected by a suction wheel via a suction hose.
[0004]
[Problems to be solved by the invention]
However, the method disclosed in each of the above publications may be used when the buried pipe is deep and the suction hose is long, or when there is an underground pipe (with vertical underground chambers on both sides of the obstacle in the pipeline). However, this method cannot be applied to the case of cleaning a pipe that is always full, such as a pipe having a structure in which the undercover room is connected by a pipe rod under an obstacle.
[0005]
In addition, in these conventional techniques, not only the bad odor air sucked in the pipe is released into the atmosphere through the suction wheel, but also the manhole leading to the sewer pipe is in an open state at the time of cleaning. Will be released into the atmosphere, and there will be a problem that odors and harmful substances will be scattered in the vicinity.
[0006]
The present invention has been made in view of such a problem, and can be applied to a pipe having a deep burial depth or a pipe that is always full, and further, bad odors and harmful substances leak to the outside air. It is an object of the present invention to provide an in-pipe cleaning device that can reliably prevent this.
[0007]
[Means for solving the problems and actions / effects]
In order to achieve the above object, an in-pipe cleaning apparatus according to the present invention comprises:
An in-pipe cleaning device for cleaning the sediment in the buried pipe through a shaft,
(A) A cleaning robot that scrapes off the deposited soil in the buried pipe and transports the removed deposited soil to the shaft.
(A) A drainage pump that is installed at the lower part of the shaft and that conveys the deposited soil transported by the cleaning robot to the ground together with sewage,
(C) Sludge treatment means installed on the ground and dewatering the deposited soil and sewage transported by the drainage pump;
(D) suction collection means for sucking and collecting the deposited soil after being dewatered by the sludge treatment means;
(E) a discharge hose for discharging the sewage separated and discharged by the sludge treatment means into the shaft, and (f) a blocking lid provided at the entrance / exit of the shaft and blocking odor leakage from the pipe. It is characterized by.
[0008]
The sediment deposited in the pipe is scraped off by a remotely operated cleaning robot, conveyed rearward, and temporarily stored at a lower position of the shaft. Thereafter, the stored sedimentary soil is transported to the ground together with sewage by a drainage pump installed at the lower part of the shaft, and dehydrated by sludge treatment means installed on the ground. The sediments after this which has been dehydrated is sucked and recovered by the suction recovery means, whereas sewage discharged separated by sludge treatment means is discharged into the vertical shaft via a discharge hose.
[0009]
According to the present invention, since the sediment in the pipe is once transported to the shaft by the cleaning robot and lifted up to the ground from the lower part of the shaft by the drainage pump, the buried pipe is deeply buried. However, it is possible to reliably discharge sedimentary soil to the ground even in buried pipes that are always full, such as overpass pipes. Moreover, since the shielding cover is provided in the entrance / exit part of the shaft, the odor leakage from the inside of the pipe can be surely prevented by this shielding cover.
[0010]
In the present invention, it is preferable that a compartment is provided on the ground so as to surround the blocking lid and to surround the sludge treatment means and the suction recovery means, and a blower device for sending air into the compartment is provided. . In this way, the pressure in the compartment is higher than in the shaft, and it is possible to prevent the bad odor generated from the sediment and the water and air in contact with it from being reliably trapped in the pipe and the compartment and released into the atmosphere. Can do.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, specific embodiments of the in-pipe cleaning apparatus according to the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is an overall system configuration diagram of an in-pipe cleaning apparatus according to an embodiment of the present invention. 2 and 3 show partially enlarged views (1) and (2) of FIG. 1, respectively.
[0013]
In this embodiment, in the sewer pipe 1 composed of the underground pipe buried in the ground, the overhead room arranged in the vertical direction on each of the upstream side and the downstream side (the downstream underground room is not shown) The example applied to the cleaning system in a pipe | tube which cleans the sediment 4 deposited in the horizontal pipe | tube 3 which connects between the lower end parts of the vertical pipe | tube 2 as. In this overturned pipe, the horizontal pipe 3 is normally full with the water surface at the position indicated by the symbol H in FIG.
[0014]
When cleaning the sediment 4, a cleaning robot 6 is inserted from a vertical shaft 5 provided above the vertical pipe 2 on the upstream side. The cleaning robot 6 is connected to the tip of a wire 8 fed from an electric winch 7 for lifting a robot installed on the ground near the entrance / exit of the shaft 5 and travels along the bottom surface of the horizontal pipe 3. A body 9, a rotating cutter 10 attached to the tip of the traveling body 9, and a submersible pump (drainage pump) 11 that collects and sucks the sediment 4 scraped by the rotating cutter 10, and includes a generator 12. The operation is controlled by remote control through a control cable 14 extending from a control vehicle 13 that is mounted on the vehicle and stopped on the ground.
[0015]
A tip of a recovery hose 15 is connected to the submersible pump 11, and the deposited soil 4 sucked together with sewage by the submersible pump 11 is conveyed rearward by the recovery hose 15. The wire 8, the cable 14 and the recovery hose 15 are bundled by a hose / cable cover 16 with a float so that the recovery hose 15 and the like are always lifted in water.
[0016]
At the corner portion at the boundary between the horizontal pipe 3 and the vertical pipe 2, the direction of the wire 8, the cable 14 and the collection hose 15 is changed, and a guide 17 for guiding the movement of the collection hose 15 is arranged. Yes. The guide 17 is supported by a lower end portion of a support rod 19 whose upper end portion is fixed to a support bracket of a guide 18 fixed on the ground.
[0017]
The base end (upper end) of the recovery hose 15 extends to the vicinity of the water surface H and is connected to a funnel-shaped sludge receiver 20. A discharge hose 21 is connected to the lower end of the sludge receiver 20, and the lower end of the discharge hose 21 is open at the lower part of the vertical pipe 2. In this way, the sediment 4 containing the dirty moisture conveyed by the recovery hose 15 is conveyed to a position near the water surface H, discharged into the sludge catch 20 connected to the recovery hose 15, and vertically passed through the discharge hose 21. It is discharged to the lower part of the pipe 2, in other words, the shaft 5. Although not clearly shown in FIG. 1, the lengths of the recovery hose 15, the wire 8, and the cable 14 between the guide 17 and the traveling body 9 hinder the operation of the cleaning robot 6. It is made long enough to have a slack as appropriate.
[0018]
A submersible pump (drainage pump) 22 is installed near the tip of the discharge hose 21 at the lower part of the vertical pipe 2. The submersible pump 22 serves to transport the sediment 4 discharged from the drainage hose 21 to the ground together with sewage, and is suspended by a material transport vehicle (rough terrain crane) 23 placed on the ground. Held in place. A tip of a recovery hose 24 is connected to the submersible pump 22, and the recovery hose 24 is guided by a guide 18, and then a base end of the recovery hose 24 is disposed on the ground. Corresponds to sludge treatment means.) 25. Thus, the sediment 4 sucked together with the sewage by the submersible pump 22 is conveyed to the ground sludge treatment device 25 by the recovery hose 24.
[0019]
The sludge treatment device 25 has a function of dewatering the deposited soil containing the sewage transported through the recovery hose 24 by the submersible pump 22, and the deposited soil after the dewatering treatment by the sludge treatment device 25 is performed. The wastewater once stored in the storage tank 27 by the discharge hose 26 and separated and discharged by the sludge treatment device 25 is returned to the shaft 5 by the discharge hose 28.
[0020]
In addition to the control vehicle 13, the material transport vehicle 23, the sludge treatment device 25, and the storage tank 27, a sludge suction vehicle (corresponding to suction collection means in the present invention) 29 is disposed on the ground. The sludge suction wheel 29 is provided with a suction device for sucking the deposited soil 4 from the storage tank 27 through the suction hose 30, and the air discharged from the suction device is stored by the exhaust hose 31. It is comprised so that it may return in the tank 27. FIG. In this way, the air is circulated between the storage tank 27 and the sludge suction wheel 29, so that malodors are prevented from being diffused to the surroundings. At this time, considering that the pressure in the storage tank 27 changes, the storage tank 27 preferably communicates the storage tank 27 and the shaft 5 with a hose or the like. In FIG. 1, reference numeral 32 denotes a cable reel that winds the control cable 14, and reference numeral 33 denotes a guide roller that guides the wire 8.
[0021]
As shown in FIG. 3, a shut-off lid 34 is provided at the entrance / exit portion of the shaft 5, and the malodor from the sewer pipe 1 is blocked by the shut-off lid 34. The blocking lid 34 is provided with a through hole in a portion through which the recovery hose 24 and various wires, cables and the like pass, and a through hole is also provided in a portion where the backflow prevention ventilation port 35 is attached.
[0022]
The sludge treatment device 25, the storage tank 27, the sludge suction wheel 29, and the like are placed in a compartment 36 that is defined from the outside by four walls and a ceiling to perform work. In addition, a blower (blower) 37 is attached to the side wall of the compartment 36 so that an air flow from the outside into the compartment 36 is formed. The air thus taken into the compartment 36 is taken into the shaft 5 through the backflow prevention vent 35. Therefore, it is possible to reliably suppress the bad odor from the sewer pipe 1 from leaking to the outside.
[0023]
In the present embodiment, a cleaning device 38 (not shown in FIG. 1) is mounted below the blocking lid 34. The cleaning device 38 has a structure in which a large number of injection nozzles 38a are attached to the inner surface of the cylindrical wall portion, and the recovery hose 24, various cables, and the like are injected by injecting a cleaning liquid such as water from the injection nozzles 38a. The items in the pipe are cleaned. By providing such a cleaning device 38, the odor prevention effect can be further enhanced.
[0024]
In the in-pipe cleaning system configured as described above, the cleaning operation in the horizontal pipe 3 is performed by inserting the cleaning robot 6 through the shaft 5 and the vertical pipe 2 into the horizontal pipe 3. In this cleaning operation, the submersible pump 22 and the sludge receiver 20 are set in advance at predetermined positions of the vertical pipe 2. In this state, when the cleaning robot 6 is remotely operated from the ground, the accumulated soil 4 accumulated in the horizontal pipe 3 is scraped by the rotating cutter 10 at the tip of the cleaning robot 6, and the scraped accumulated soil 4 is treated as sewage. It is collected by the submersible pump 11 together with the water, transported backward through the recovery hose 15, and discharged from the sludge receiver 20 connected to the base end of the recovery hose 15 to the lower part of the shaft 5 through the drainage hose 21. Is done.
[0025]
Next, the deposited soil 4 once stored in the lower part of the shaft 5 is sucked together with the sewage by the submersible pump 22 and is transported to the ground sludge treatment device 25 by the recovery hose 24. Thereafter, in the sludge treatment device 25, the debris containing the sewage transported through the recovery hose 24 is dehydrated, and the debris after dehydration is temporarily stored in the storage tank 27 by the discharge hose 26. The sewage separated and discharged by the sludge treatment device 25 is returned to the shaft 5 by the discharge hose 28.
[0026]
The sediment 4 stored in the storage tank 27 is sucked by the sludge suction wheel 29 through the suction hose 30, and the air discharged from the sludge suction wheel 29 is returned to the storage tank 27 by the exhaust hose 31. It is. At this time, considering that the pressure in the storage tank 27 changes, the storage tank 27 preferably communicates the storage tank 27 and the shaft 5 with a hose or the like.
[0027]
According to this embodiment, the sediment 4 collected by the cleaning robot 6 is once transported to the lower part of the shaft 5 by the submersible pump 11, and is transported from the lower part of the shaft 5 to the ground by the submersible pump 22. Even if the burial depth of the sewer pipe 1, especially the horizontal pipe 3, is deep, and even if it is a buried pipe that is always full like an underground pipe, the sediment 4 should be discharged to the ground. Can do. Moreover, since the shielding lid 34 is provided in the entrance / exit part of the shaft 5, the odor leakage from the inside of the pipe can be surely prevented by the shielding lid 34. In addition, the sludge treatment device 25, the storage tank 27, the sludge suction wheel 29, and the like are placed in a compartment 36 that is defined by the four walls and the ceiling to perform the work. Emission of bad odor to the outside can be suppressed.
[0028]
In the present embodiment, the exhaust from the sludge suction vehicle 29 is configured to be discharged into the storage tank 27. However, if this exhaust is returned to the shaft 5, the malodor prevention function can be further enhanced. .
[0029]
In the present embodiment, an intermediate chamber (compartment) may be provided inside the compartment 36 so as to surround only the surrounding space of the blocking lid 34, so that the compartment can have a double structure.
[0030]
In the present embodiment, description has been given of cleaning an underground pipe, but the present invention can also be applied to a buried pipe such as a sewer pipe other than the underground pipe.
[Brief description of the drawings]
FIG. 1 is an overall system configuration diagram of an in-pipe cleaning apparatus according to an embodiment of the present invention.
FIG. 2 is a partially enlarged view (1) of FIG. 1;
FIG. 3 is a partially enlarged view (2) of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sewer pipe 4 Sediment 5 Shaft 6 Cleaning robot 11, 22 Submersible pump 13 Control vehicle 15, 24 Collection hose 20 Sludge receptacle 23 Material transport vehicle 25 Sludge treatment device 27 Storage tank 28 Discharge hose 29 Sludge suction vehicle 30 Suction hose 31 Exhaust Hose 34 Shut-off lid 36 Compartment 37 Blower (blower)

Claims (2)

An in-pipe cleaning device for cleaning the sediment in the buried pipe through a shaft,
(A) A cleaning robot that scrapes off the deposited soil in the buried pipe and transports the removed deposited soil to the shaft.
(A) A drainage pump that is installed at the lower part of the shaft and that conveys the deposited soil transported by the cleaning robot to the ground together with sewage,
(C) Sludge treatment means installed on the ground and dewatering the deposited soil and sewage transported by the drainage pump;
(D) suction collection means for sucking and collecting the deposited soil after being dewatered by the sludge treatment means;
(E) a discharge hose for discharging the sewage separated and discharged by the sludge treatment means into the shaft, and (f) a blocking lid provided at the entrance / exit of the shaft and blocking odor leakage from the pipe. An in-pipe cleaning device.   2. The pipe according to claim 1, further comprising a compartment on the ground so as to surround the blocking lid, and to surround the sludge treatment means and the suction recovery means, and a blower for feeding air into the compartment. Cleaning device.

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