JP2003253748A - Pipe inside cleaning equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide pipe inside cleaning equipment which can be applied to a pipe having a large embedment depth or always filled up with water and can definitely prevent leakage of an offensive odor, a harmful substance or the like to the outside. <P>SOLUTION: This apparatus is equipped with a cleaning robot 6 which scrapes sediment 4 inside a sewer pipe 1 and carries it to a bottom position of a vertical shaft 5, a submergible pump 22 which carries the sediment 4 together with polluted water transported by the cleaning robot 6 up to the surface of the ground, sludge treatment equipment 25 which dewaters the sediment and polluted water transported by the submergible pump 22, a sludge sucking vehicle 29 for sucking and recovering the sediment subjected to dewatering treatment by the sludge treatment equipment 25, and discharges polluted water separated and discharged by the sludge treatment equipment 25 to the inside of the vertical shaft 5 through a discharge hose 28, and the leakage of offensive odor from the inside of the pipe is blocked by a blocking lid at the entrance portion of the vertical shaft 5. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-pipe cleaning device for cleaning sedimentary soil accumulated in a buried pipe such as a sewer pipe through a vertical shaft.

[0002]

2. Description of the Related Art Conventionally, when cleaning sludge such as deposits or deposits accumulated in sewer pipes (hereinafter referred to as "soil"), drain water from the sewer pipes and then remove the shaft from the manhole. The worker passes through the sewer pipe and scrapes the accumulated soil by the worker's manual work, and sucks the scraped soil with a sludge suction car stopped on the ground through the suction hose of the worker. The method of collecting is generally adopted.

However, relying on manual work for cleaning the inside of the sewer pipe in this way has the problems that not only the work efficiency is poor, but also the worker is forced to work hard. Then, in order to solve such a problem, for example, JP-A-6-17479 and JP-A-6-17480.
As disclosed in Japanese Patent Publication, a running body equipped with a manipulator is inserted into a sewer pipe, a suction nozzle is attached to this manipulator, and suction soil is sucked by this suction nozzle, and the suction soil is sucked through a suction hose. A cleaning device has been proposed which is designed to be sucked and collected by a vehicle.

[0004]

However, the methods disclosed in the above-mentioned publications are not suitable for the case where the buried hose is deep and the suction hose is long, or when the siding hose (obstruction of the conduit is obstructed). A problem that it cannot be applied when cleaning a pipe that is always filled with water, such as a pipe with vertical siding chambers on both sides and a structure in which the siding chambers are connected to each other through a pipe under the obstacle. There is.

Further, in these prior arts, not only the bad odorous air sucked in the pipe is released into the atmosphere through the suction wheel, but the manhole leading to the sewer pipe is in an open state at the time of cleaning. There is a problem that the malodor in the pipe is released into the atmosphere, and the malodor and harmful substances are scattered in the neighborhood.

The present invention has been made in view of the above problems, and can be applied to a pipe having a deep burial depth or a pipe which is always full of water, and is free from a foul odor and harmful substances. It is an object of the present invention to provide an in-pipe cleaning device that can surely prevent leakage to the outside air.

[0007]

In order to achieve the above-mentioned object, the pipe cleaning device according to the present invention is a pipe cleaning device for cleaning accumulated soil in a buried pipe through a vertical shaft. While scraping off the accumulated soil in the pipe,
A cleaning robot that conveys this scraped sediment to the shaft, (a) a drainage pump that is installed at the lower part of the shaft and that conveys the sediment that has been transported by the cleaning robot to the ground together with sewage, (c) A sludge treatment means installed on the ground for dehydrating the sediment and wastewater conveyed by the drainage pump, (d) a suction recovery means for aspirating and recovering the sediment after dehydration by the sludge treatment means, (E) A discharge hose for discharging the wastewater separated and discharged by the sludge treatment means into the shaft, and (f)
It is characterized in that it is provided with a shut-off lid which is provided at an entrance / exit of the vertical shaft and shuts out odor leakage from the inside of the pipe.

[0008] The deposited soil deposited in the pipe is scraped off by a cleaning robot that is remotely operated and conveyed to the rear,
It is temporarily stored in the lower position of the vertical shaft. After that, the accumulated sediment is transported to the ground together with the sewage by the drainage pump installed in the lower part of the shaft, and is dehydrated by the sludge treatment means installed on the ground. Then, the sediment after the dehydration treatment is collected by the suction collection means, while the wastewater separated and discharged by the sludge treatment means is discharged into the vertical shaft through the discharge hose.

According to the present invention, since the deposited soil in the pipe is once conveyed to the vertical shaft by the cleaning robot and lifted to the ground from the lower part of the vertical shaft by the drainage pump, the buried depth of the buried pipe is deep. Even in the case, even in the case of a buried pipe that is always filled with water, such as a siding pipe, it is possible to reliably discharge the sediment to the ground. In addition, since a blocking lid is provided at the entrance and exit of the shaft,
Odor leakage from the inside of the pipe can be reliably prevented by this blocking lid.

In the present invention, a compartment is provided on the ground so as to surround the shut-off lid and surround the sludge treatment means and suction recovery means, and an air blower for injecting air into the compartment is provided. Is preferred. By doing this, the pressure in the compartment becomes higher than in the shaft,
It is possible to reliably prevent the malodor generated from the accumulated soil and the water and the air that comes in contact with the accumulated soil in the pipe and in the compartment to be released into the atmosphere.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, specific embodiments of the pipe cleaning apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 shows an overall system configuration diagram of an in-pipe cleaning device according to an embodiment of the present invention. Also,
2 and 3 are partial enlarged views (1) and (2) of FIG. 1, respectively.

In this embodiment, in a sewer pipe 1 which is a sewage pipe buried in the ground, a siding chamber vertically arranged on each of the upstream side and the downstream side (the siding chamber on the downstream side is shown in FIG. (Not shown) is an example applied to an in-pipe cleaning system that cleans sedimentary soil 4 accumulated in a horizontal pipe 3 that connects between lower end portions of a vertical pipe 2. In this siding pipe, the water surface is normally located at the position indicated by the symbol H in FIG. 1, and the horizontal pipe 3 is always full.

At the time of cleaning the deposited soil 4, a cleaning robot 6 from a vertical shaft 5 which is continuously provided above the vertical pipe 2 on the upstream side.
Is inserted. 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 vertical shaft 5, and runs along the bottom surface of the horizontal pipe 3. A body 9, a rotary cutter 10 mounted on the tip of the traveling body 9, and a submersible pump (drainage pump) 11 for collecting and sucking the accumulated soil 4 scraped off by the rotary cutter 10, and a generator 12
The operation is controlled by remote control via a control cable 14 extending from a control vehicle 13 mounted on the ground and stopped on the ground.

A tip of a recovery hose 15 is connected to the submersible pump 11, and the sediment hose 4 sucked together with dirty water by the submersible pump 11 is conveyed backward 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 always maintain a floating posture in water.

A guide 17 for changing the direction of the wire 8, the cable 14 and the recovery hose 15 and for guiding the movement of the recovery hose 15 and the like is provided at a corner portion at the boundary between the horizontal pipe 3 and the vertical pipe 2. It is distributed.
The guide 17 is supported by a lower end of a support rod 19 having an upper end fixed to a support bracket of a guide 18 fixed on the ground.

The base end (upper end) of the recovery hose 15 is extended to near the water surface H and connected to the funnel-shaped sludge receiver 20. A discharge hose 21 is connected to a lower end portion of the sludge receiver 20, and a lower end of the discharge hose 21 is connected to the vertical pipe 2
There is an opening at the bottom of. In this way, the sediment soil 4 containing the dirty water transported by the recovery hose 15 is transported to a position near the water surface H and discharged into the sludge receiver 20 connected to the recovery hose 15 and passes vertically through the discharge hose 21. The pipe 2 is discharged to the lower part of the vertical shaft 5, in other words. In addition,
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 do not hinder the operation by the cleaning robot 6. It has a length that is long enough with some slack.

A discharge hose 21 below the vertical pipe 2.
A submersible pump (drainage pump) 22 is installed near the tip of the. The submersible pump 22 serves to convey the accumulated soil 4 discharged from the drainage hose 21 to the ground together with sewage, and is suspended by a material carrier (rough terrain crane) 23 fixed on the ground. It is held in place. A tip end of a recovery hose 24 is connected to the submersible pump 22, the recovery hose 24 is guided by a guide 18, and then the base end of the recovery hose 24 is placed on the ground. Corresponding to sludge treatment means) 25. In this way, submersible pump 2
The sediment soil 4 sucked together with the sewage by 2 is conveyed by the recovery hose 24 to the sludge treatment device 25 on the ground.

The sludge treatment device 25 has a function of dewatering the accumulated soil containing the sewage transported by the submersible pump 22 through the recovery hose 24, and after being dewatered by the sludge treatment device 25. Discharge hose 2
6 is once stored in the storage tank 27, while the wastewater separated and discharged by the sludge treatment device 25 is discharged to the discharge hose 2
It is returned to the shaft 5 by 8.

On the ground, in addition to the control vehicle 13, the material carrier 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 are arranged. The sludge suction wheel 29 is provided with a suction device for sucking the accumulated 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 configured to be returned to the tank 27. In this way, by circulating the air between the storage tank 27 and the sludge suction wheel 29, the bad smell is prevented from being diffused to the surroundings. At this time, it is preferable that the storage tank 27 communicates with the vertical shaft 5 by a hose or the like in consideration of the change in the pressure inside the storage tank 27. In FIG. 1, reference numeral 32 is a cable reel for winding the control cable 14, and reference numeral 33 is a guide roller for guiding the wire 8.

As shown in FIG. 3, a blocking lid 34 is provided at the entrance / exit of the vertical shaft 5, and the blocking lid 34 is configured to block offensive odors from the inside of the sewer pipe 1. 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 to which the backflow preventing ventilation port 35 is attached.

The sludge treatment device 25, the storage tank 27, the sludge suction wheel 29, and the like are arranged in a compartment 36 defined by the four walls and the ceiling from the outside for performing work. An air blower (blower) 37 is attached to the side wall of the compartment 36 so that an air flow from the outside to the inside of the compartment 36 is formed. The air thus taken into the compartment 36 is provided with the backflow prevention ventilation port 3
It is taken into the shaft 5 through the shaft 5. Therefore, it is possible to surely prevent the malodor from the sewer pipe 1 from leaking to the outside.

Further, in this embodiment, a cleaning device 38 (not shown in FIG. 1) is mounted below the blocking lid 34. This cleaning device 38 has a structure in which a large number of injection nozzles 38a are attached to the inner surface of a cylindrical wall portion, and by injecting a cleaning liquid such as water from these injection nozzles 38a, the recovery hose 24 and various cables, etc. The items in the pipe are washed. By providing such a cleaning device 38, it is possible to further enhance the odor prevention effect.

In the in-pipe cleaning system thus constructed, the cleaning work in the horizontal pipe 3 is performed by inserting the cleaning robot 6 into the horizontal pipe 3 through the vertical shaft 5 and the vertical pipe 2. During this cleaning operation, the submersible pump 22 and the sludge receiver 20 are set in advance on the vertical pipe 2 at predetermined positions. 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 off by the rotary cutter 10 at the tip of the cleaning robot 6, and the scraped soil 4 is sewage. It is collected together with the water by the submersible pump 11, is conveyed backward through the recovery hose 15, and is discharged from the sludge receiver 20 connected to the proximal end of the recovery hose 15 through the drain hose 21 to the lower part of the vertical shaft 5. To be done.

Next, the sediment 4 temporarily stored in the lower part of the vertical shaft 5 is sucked together with the sewage by the submersible pump 22, and the recovery hose 24 sewage treatment device 25 on the ground.
Be transported to. After that, in the sludge treatment device 25, the sediment soil containing the waste water conveyed through the recovery hose 24 is dehydrated, and the sediment soil after the dehydration treatment is temporarily stored in the storage tank 27 by the discharge hose 26. The wastewater separated and discharged by the sludge treatment device 25 is returned to the shaft 5 by the discharge hose 28.

Further, the accumulated soil 4 stored in the storage tank 27
Is sucked by the sludge suction wheel 29 via 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. At this time, it is preferable that the storage tank 27 communicates with the vertical shaft 5 by a hose or the like in consideration of the change in the pressure inside the storage tank 27.

According to this embodiment, the sediment 4 collected by the cleaning robot 6 is once moved to the vertical shaft 5 by the submersible pump 11.
Since it is configured to be transported to the lower portion and to be transferred from the lower portion of the vertical shaft 5 to the ground by the submersible pump 22, even when the burial depth of the sewer pipe 1, especially the horizontal pipe 3 is deep, the siding pipe is also deep. Even with a buried pipe that is always full of water as described above, the sediment 4 can be reliably discharged to the ground. Further, since the blocking lid 34 is provided at the entrance and exit of the vertical shaft 5, the blocking lid 34 can reliably prevent odor leakage from the inside of the pipe. Moreover, the sludge treatment device 25, the storage tank 27, the sludge suction wheel 29, and the like are fixed in the compartment 36 defined by the four walls and the ceiling from the outside to perform the work. It is possible to suppress the release of offensive odors to the outside.

In this embodiment, the exhaust gas from the sludge suction wheel 29 is discharged into the storage tank 27.
By returning this exhaust gas into the vertical shaft 5, the function of preventing malodor can be further enhanced.

In the present embodiment, an intermediate chamber (compartment) may be provided inside the compartment 36 so as to surround only the space around the blocking lid 34, and the compartment may have a double structure.

In the present embodiment, the one for cleaning the siding pipe has been described, but the present invention can be applied to a buried pipe such as a sewer pipe other than this siding pipe.

[Brief description of drawings]

FIG. 1 is an overall system configuration diagram of a pipe cleaning device according to an embodiment of the present invention.

FIG. 2 is a partially enlarged view (1) of FIG.

FIG. 3 is a partially enlarged view (2) of FIG.

[Explanation of symbols]

1 sewer pipe 4 sediment 5 shafts 6 cleaning robot 11,22 Submersible pump 13 Control vehicle 15,24 Recovery hose 20 Sludge receiver 23 material carrier 25 Sludge treatment equipment 27 storage tanks 28 Discharge hose 29 Sludge suction car 30 suction hose 31 Exhaust hose 34 Blocking lid 36 compartments 37 Blower (Blower)

Continued front page    (72) Inventor Toyoichi Nanbu             5 Yokaichi-cho, Komatsu City, Ishikawa Prefecture Small Co., Ltd.             Matsu Works Komatsu Factory F-term (reference) 2D063 EB01 EB05 EB08 EB22 EB25                       FA06 FA12 FA14

Claims (2)

[Claims] 1. A pipe cleaning device for cleaning sedimentary soil in a buried pipe through a vertical shaft, comprising: (a) scraping the deposited soil in the buried pipe and carrying the scraped soil soil to the vertical shaft. , (A) a drainage pump installed at the lower part of the vertical shaft to convey the sedimentary soil conveyed by the cleaning robot to the ground together with the sewage, (c) a sedimentary soil pump installed on the ground and conveyed by the drainage pump, and The sludge treatment means for dehydrating wastewater, (d) the suction collection means for sucking and collecting the accumulated soil after the dehydration treatment by this sludge treatment means, (e) the wastewater separated and discharged by the sludge treatment means An in-pipe cleaning device comprising: a discharge hose for discharging into a vertical shaft; and (f) a blocking lid provided at an entrance / exit of the vertical shaft for blocking odor leakage from the inside of the vertical pipe. 2. A compartment is provided on the ground so as to surround the shut-off lid and surround the sludge treatment means and the suction recovery means, and an air blower for blowing air into the compartment is provided. The pipe cleaning device according to 1.