KR20010111856A - dredging equipment and the method of construcion for a drain pipe - Google Patents

Abstract

The present invention relates to an equipment and a method for dredging sludge deposited in sewage pipes, and installs a washing water injector at the inlet of the sewer pipe of the manhole, and injects a large amount of high pressure washing water into the sludge in the sewage pipe through the nozzle. In this case, the sludge and sewage in the sewage pipe are swept up to the manhole opposite by using the impact of the sprayed washing water and the strong water flow generated at the bottom of the sewage pipe.

Pumped sewage and sludge swept out into the manhole by mixing with the washing water, settling the sludge from the sedimentation tank installed on the ground, sludge settled and mixed with the sewage to send the remaining washing water to the high pressure pump for pressurizing the washing water Recycled into the washing water sprayed into the sewage pipe,

Sludge extrusion high pressure pump attached to the sludge discharge hole formed in the bottom of the sludge sedimentation tank, and sludge transfer to a transport vehicle parked in a large space such as a parking lot far away to minimize traffic obstacles in the sewer dredging site. Since the high pressure hose is installed, the sludge deposited in the sludge settling tank is transferred.

Existing large sewer dredging equipment is easy to dredging sewer pipes in alleys that were difficult to enter and sewer pipes in places with heavy traffic.

While dredging the sewage pipes economically in a short time, the surface of the structure inside the sewage pipe is completely washed, and foreign material flowing into the sewage pipe after dredging flows without catching the sludge remaining in the sewage pipe, delaying the deposition of foreign matter in the sewage pipe. It is related to the sewer dredging equipment and construction method to improve the reliability.

Description

Dredging equipment and the method of construcion for a drain pipe}

The present invention relates to equipment and construction methods for dredging sewer pipes,

In particular, a large amount of ultra-high pressure washing water is injected into the sewage pipe in a short time, and by using the impact of the washing water and the strong water flow generated at the bottom of the sewage pipe, the deposited sludge is swept out to the manhole outside the sewage pipe.

Sludge, sewage and washing water swept out of the manhole are pumped to settle the sludge from the sludge sedimentation tank on the ground, and the sludge precipitated washing water and sewage are sent back to the high pressure pump for pressurizing the washing water. Recycle with sprayed washing water,

In order to facilitate the transportation of sewage pipe dredging site, park a large sludge transportation cargo vehicle in a large place such as a parking lot far from the site, and install a high pressure hose for sludge transfer between the transportation vehicle and the sludge dredging site. It is about the dredging equipment and construction method of sewage pipe which makes it easy to transport sludge without disturbing road traffic.

There are many types of dredging equipment of sewage pipes used in the related art, but among them, the use of a jet krilling dredger using a special high pressure nozzle has been expanded.

The jet kneading dredger is a device that is to remove the sludge in the sewage pipe by using the washing water sprayed at ultra-high pressure and suction dredging the sludge removed by the vacuum suction,

While inserting and reciprocating the high pressure hose for washing water, which has several nozzles with small diameters, into the sewage pipe, the washing water is injected at high pressure from several small nozzles, and the sludge deposited inside the sewage pipe is gradually introduced into the manhole outside the sewer pipe. Draw out, suction dredging with vacuum suction device.

The jet cleaning sewage pipe dredger has a small nozzle diameter to which washing water is injected, so when the sewage in the sewage pipe is used, the nozzle is blocked by foreign substances contained in the sewage, so only clean tap water is used. The problem of having to keep feeding

Since the washing water is injected at high pressure but the nozzle size is small and the quantity of spraying is small, the high pressure hose for spraying the washing water reciprocates the sewage pipe more than several times in order to draw sludge out of the sewage pipe.

If there is sewage in the sewage pipe, the refraction of washing water is generated and the cleaning efficiency is minimized. Therefore, it takes longer time for dredging pipe sewerage, and consequently there is a problem of excessive use of washing water and economic efficiency of sewer pipe dredging work. ,

Since the equipment for vacuum suction, the tank for washing water, and the high pressure hose for spraying the washing water are integrally installed in one large vehicle, the size of the equipment is large, and even if dredging of sewer pipes is carried out on the boulevard, the traffic obstacle becomes severe. There are many problems in dredging the sewer pipes in the alleys,

Since there is no device to block the inlet of the adjacent sewer pipe, the sludge flowing out along with the flow of the washing water and the sewage is accumulated again in another sewage pipe, resulting in a problem that the dredging of the sludge is not sure.

The present invention has been made to solve the above problems,

A large amount of high-pressure washing water is sprayed in a short time, and using the blowing force and the strong water flow generated at the bottom of the sewage pipe at this time, the sludge is swept out to the manhole outside the sewage pipe in a short time, The sewage sludge is pumped to the ground sedimentation tank and settled, and the sedimented sludge can be transported to the transport tank far away through the high pressure pump and the high pressure hose for transport.

Normally, it is integrated into one vehicle and moves and operates, and according to the site situation, the equipment is separated and moved and installed according to the site situation. Therefore, it is easy to enter any site where the existing large dredging equipment could not enter. Dredging of sewage pipes can be done easily,

The sewage and washing water separated from the sludge in the sludge sedimentation tank is pressurized with a high pressure pump for pressurizing the washing water and recycled into the washing water for dredging pipe sewerage,

It cleans not only the dredging of sludge but also the inner surface of sewage pipe structure, and smoothes the flow of sewage after dredging, thus preventing foreign substances flowing into the sewer pipe from being caught by the sludge remaining in the sewer pipe and being deposited in the sewer pipe. The purpose is to provide sewer dredging equipment and construction methods that can delay the deposition as much as possible.

1 is a view schematically showing a process of dredging sewage pipe by applying the equipment and the method of the present invention

2 is a side view of the washing water injection device

Figure 3 is a side view of the sludge settling tank and sludge extrusion high pressure pump

Figure 4 is a front view of the sludge sedimentation tank and the sludge extrusion high pressure pump

<Explanation of symbols for the main parts of the drawings>

1: Vehicle of mounting and mobile of the present invention 2: Phase of the present invention. Unloading crane

3: engine for power generation 4: hydraulic pump for converting rotational power to hydraulic pressure

5: High pressure hose for hydraulic distribution 6: High pressure pump for pressurizing washing water

7: Sludge deposited in sewage pipe 8: High pressure hose for washing water supply

9: Manhole with flushing water spray a 10: Washing hole for flushing water

11: Light and CCTV camera 12: Control panel of flushing water jet

13: Adjusting hole of the adjusting plate a 14: Adjusting pin of the adjusting plate

15: Frame 16: of flushing water spray device spring of adjustment pin a

17: Adjustment hole of the adjustment plate b 18: Adjustment lever of the washing water injection device

19: Joint of the adjusting lever 20: Spiral of the joint

21: Hose for supplying washing water 22: Handle of adjusting lever

23: projection of the adjustment lever 24: CCTV monitor

25: adjacent sewage pipe 26: legs of the washing water injector

27: Structure of sewage pipe 28: Spiral device for height adjustment of washing water injection device

29: nozzle of the pipe window to which washing water is sprayed 30: spring of adjustment pin b

31: The washing water sprayed from the nozzle of a pipe | window 32: Sludge. sewer. Manhole spraying flushing water b

33: washing water mixed with sludge and sewage 34: sludge. sewer. Pump to flush the washing water

35: sludge settling tank 36: precipitated sludge

37: sewage and washing water separated from sludge 38: sludge conveying hose

39: net for promoting sludge settling 40: hole for discharge of precipitated sludge

41: high pressure pump for sludge extrusion 42: sludge discharge port of the high pressure pump for extrusion

43: high pressure hose for the transport of sludge 44: vehicle for transporting sludge to the treatment plant

45: sludge transport tank 46: sludge collected in the transport tank

47: sewer pipe closing device 48: wire for light and CCTV camera

49: bottom of sewer pipe 50: partition to promote sludge settling

Sewage pipe dredging equipment and method of the present invention for realizing the above object,

An engine for generating all power required by the present invention; A hydraulic pump mounted to the drive shaft of the engine to convert the rotational force of the engine into hydraulic pressure; A high pressure hose for hydraulic distribution connected to the hydraulic pump to distribute the hydraulic pressure to each of the driving devices;

A high pressure pump for pressurizing the washing water connected to the high pressure hose for distributing the hydraulic pressure to pressurize the washing water with hydraulic power; A high pressure hose for supplying the washing water to the washing water pressurizing pump and the washing water spraying device installed at the sewer inlet of the manhole;

It is attached to the end of the high-pressure hose and the high-pressure cleaning water is injected into the sewage pipe, the pipe window of the washing water injector for sweeping the sludge deposited inside the sewer pipe to the opposite manhole; An adjustment plate of the washing water injector for supporting the pipe window and adjusting the direction of the washing water sprayed in all directions; An adjusting pin for supporting the adjusting plate; A spring which is fitted to the adjustment pin and stabilizes the adjustment plate; Up direction of the control panel. Ha. Left. An adjusting lever which moves to the right to adjust the direction of the washing water sprayed from the pipe; A joint attached to the end of the lever; Left lever. A spiral for adjusting the height of the adjustment plate while turning to the right while the spiral formed at the end of the joint rises and falls inside the spiral formed at the frame of the injector; A spring of the adjusting pin which is fixed to the joint and stabilizes the adjusting plate; It is attached to the adjustment lever so that the adjustment plate is left in accordance with the operation of the lever. Ooh. Prize. An adjusting projection which acts to move downward; A light and CCTV camera mounted on the pipe window and photographing the sludge dredging situation in the sewer pipe while illuminating the inside of the sewer pipe brightly; A frame of the washing water injector; A leg of the washing water injector supporting the frame; A height adjusting spiral device for adjusting the height of the leg;

The sewage pipe is connected to the above-mentioned hydraulic pressure distribution hose and installed in the manhole opposite to the manhole where the washing water injection pipe is installed while operating hydraulic pressure as a power, and is discharged into the manhole by the spraying power of the washing water and the washing water flow. A pump for pumping sludge and sewage and sprayed washing water into the tank for sedimentation on the ground; A sludge conveying hose connected to the pump and sending sludge which is pumped out, such as washing water and sewage in the sewage, to a sedimentation tank;

A sludge settling tank installed at the discharge port of the sludge conveying hose to precipitate sludge and separate sewage and washing water mixed with the sludge into recycled washing water;

A washing water multiplying hose which multiplies the recycled washing water in which sludge is precipitated from the sludge sedimentation tank to a high pressure pump for pressurizing the washing water;

It is connected to the above-mentioned high pressure hose for hydraulic distribution, while operating the hydraulic pressure as a power, attached to the sludge discharge port of the sludge sedimentation tank, for sludge conveying sludge deposited in the sludge sedimentation tank mounted on the loading box of the transport vehicle A high pressure pump for sludge extruding to extrude the sludge to a high pressure so as to transfer it to the tank;

A high pressure hose for sludge transport connected to the high pressure pump for sludge extrusion and a sludge transport tank; A sludge transfer tank mounted on a loading box of a general freight vehicle for transporting sludge to a sludge treatment plant;

The present invention is characterized by comprising a sewer pipe closing device and a construction method installed at an inlet of an adjacent sewer pipe so that washing water, sewage and sludge do not flow in the sewer pipe of a sludge dredging site.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the equipment and method of the present invention.

1 is a process of dredging sewage pipes by distributing distributing pipes in a workshop according to a separation function in a vehicle 1 equipped with the present invention in order to minimize traffic obstacles where a vehicle is hard to enter or a lot of traffic passes. As this illustrated figure,

When the equipment of the present invention moves, the crane (2) mounted on the vehicle (1) is carried in the loading box of the vehicle (1), and when it arrives at the sewer dredging site, it is mounted on the truck according to the conditions of the site. Or, each device is hypothesized as shown in Figure 1, it is variable to perform the dredging work of sewer pipes,

The engine (3) mainly uses a car engine, but can use other power. The hydraulic pump (4) mounted on the drive shaft of the engine (3) converts the rotational force of the engine (3) into a hydraulic pressure to convert the high pressure hydraulic pressure. To get it,

The hydraulic pressure is distributed to the high pressure hose (5) for the hydraulic distribution is transmitted to all the hydraulic devices (6, 34, 41) used in the present invention.

After arranging the present invention in the dredging site of the sewage pipe as described above, the high pressure pump (6) for washing water pressurization connected to the high pressure hose (5) for hydraulic distribution is operated. The washing water is loaded in the sludge sedimentation tank and the sewage in the sewer pipe of dredging.If the sewage is abundant in the sewage pipe of the site, there is no need to bring the washing water to the sludge sedimentation tank.

In the high pressure pump for washing water pressurized, the washing water to sweep the sludge deposited in the sewage pipe 7 is pressurized to high pressure, and the pressurized washing water is pressurized through the high pressure hose 8 for washing water supply, and the manhole A (9). Is supplied to the washing water injector installed at the inlet of the sewer pipe,

The washing water spraying device has a pipe (10) for spraying the washing water at a high pressure, and an adjustment plate (12) equipped with a light for photographing the dredging situation of the sludge (7) while brightly illuminating the inside of the sewer pipe and a CCTV camera (11). The plate 12 is provided with two large and small adjustment holes 13 and 17, and an adjustment pin 14 is fitted into the small hole 13 among the holes 13 and 17, and the adjustment pin 14 is provided. ) Is fixed to the frame 15 of the washing water injector, and the pin 14 is fitted with a spring 16 between the adjustment plate 12 and the frame 15 to adjust the plate 12 for adjustment. The pin (14) is adjusted up, down, left, and right by the axis, and in another large hole (17), the adjustment lever (18) which can adjust the adjustment plate (12) up, down, left, and right. Is penetrated, and the end of the penetrated lever 18 has a joint 19, so that the lever 18 is before and after, It is free to move left and right, and the helix 20 is formed at the end of the joint 19 and the frame 15 of the injector, and when the lever 18 is turned, the end 20 of the injector 19 is Since the spiral 20 formed in the frame 15 is moved up and down, the height of the lever 18 is adjusted by turning the knob 22 of the lever 18, and the lever 18 supports the adjustment plate 12. There is a projection (23), and the spring (16) is inserted into the joint (19) portion between the frame (15) and the adjustment plate (12) of the injector so as to connect the frame (15) and the adjustment plate (12) of the injector. Since the projection 23 attached to the lever 18 supports the adjusting plate 12 at this time, the height and the direction of the lever 18 are adjusted by the adjusting plate 12 and the plate 12. The direction of the pipe (10) as well as the height of the pipe (10) mounted on the Tenderly so, the operator is looking at the situation of the dredging sludge 7 in the sewage from the ground above a manhole in a CCTV monitor 24, a left grip 22 of the lever 18. By turning to the right and moving forward, backward, left and right, the sludge 7 to be removed is accurately sprayed on the sludge 7 and the sludge 7 inside the sewer pipe can be effectively swept away.

In addition, the frame 15 of the washing water injector has four legs 26 so as not to shake violently even when the reinforcement of the pipe 10 spraying the washing water at high pressure, and according to the size of the sewage pipe 27, the frame 15 The four legs 26 have a height adjusting spiral 28 to adjust the height of the installation.

In addition, the above-mentioned gasket 10 has a large nozzle 29 having a diameter of about 60 mm, and the washing water is sprayed at a high pressure through the nozzle 29. At this time, the high-pressure washing water 31 is sprayed. The manhole a (9) and the manhole b (32) are sprayed up to about 70 m farther than the average distance of about 50 m, and the sprayed washing water 31 is spread by the air resistance inside the sewer pipe 27 because of the large amount of sprayed water. It is sprayed at a high pressure close to the straight sea island, pushed forward the sludge (7) deposited in the sewer pipe while stirring vigorously with the impact of the washing water,

At this time, a strong flow of water is generated on the sewage sludge deposited on the bottom of the sewage pipe, thereby promoting the action of pushing the sludge into the manhole outside the sewage pipe, so that the sludge inside the sewage pipe 7 can be swept out of the sewage pipe in a large amount in a short time.

The manhole b (32) opposite to the sewer pipe of the manhole a (9) provided with the washing water injection pipe (10) has a pump (34) connected to the high pressure hose (5) for hydraulic distribution and operated hydraulically. , The mixed sewage, washing water and sludge (33) pouring out from the sewer pipe are pumped into the sludge settling tank (35) installed on the ground through the sludge conveying hose (38),

In order to separate the sludge (36) and the sewage (37) and the washing water (37) by rapidly settling the sludge (36) which has been pumped into the sludge settling tank (35), and to settle the sludge (36) quickly. The sedimentation tank 35 is provided with a sludge sedimentation promoting net 39 and a partition 50. The sedimented sludge 36 is discharged from the bottom of the tank 35 at the bottom of the sedimentation tank 35. The sludge discharge hole 40 is formed so that

The hole 40 is connected to a high pressure pump 41 for extruding sludge which allows the sludge 36 to be extruded and transported up to several hundred meters, so that the sludge 36 deposited under the tank 35 is spontaneous. It is supposed to be sucked into the high pressure pump 41 for sludge extrusion.

In addition, the discharge port 42 of the high pressure pump 41 for sludge extrusion is connected to a high pressure hose 43 for transporting sludge at high pressure, and through this high pressure hose, traffic congestion at the sludge dredging site is carried out. In order to reduce the sludge is transported to the transport vehicle 44 parked in a secluded place, it is put into the sludge transport tank 45 mounted in the loading box of the transport vehicle 44,

When the dredging work of the sewage pipe is completed, the sludge 46 collected in the sludge transport tank 45 is transferred to the sludge transport vehicle 44 and processed by the sludge treatment plant.

In addition, the washing water (37) and the sewage (37) separated from the sludge (36) in the sludge sedimentation tank (35) are cleaned through a hose (21) for supplying the washing water connected to the sludge sedimentation tank (35). It is automatically sucked up to the high pressure pump (6) for water pressurization, and is recycled as the washing water (31) for removing sludge (7) inside the sewage pipe,

The manhole b (32) is provided with an inlet of an adjacent sewer pipe so that the washing water (31) sprayed from the manhole a (9) and the sewage (33) and sludge (33) swept out of the sewer pipe do not flow into the adjacent sewer pipe (25). A sewer pipe closing device (47) was installed.

In addition, all the other devices except the sludge transport tank 45 of the present invention are integrally mounted on one vehicle 1, and the engine 3 and the high pressure pump 6 for pressurizing the washing water and the tank for sludge settling. (35) and the high pressure pump for sludge extrusion (41) are mounted on the vehicle (1), pump (34) for pumping the washing water injection device, sludge, sewage and washing water into the sludge sedimentation tank (35); The sewer pipe closing device (47), the high pressure hose for sludge conveyance (43), the high pressure hose for hydraulic distribution (5) and the monitor (48) are distributed on the manhole a (9) and the manhole b (32) and on the road. Freely dredging sewer pipes,

In a narrow alleyway or an area where traffic control is difficult because the existing sewer pipe dredging equipment is too large to enter, the crane mounted on the vehicle by moving the equipment of the present invention mounted on the vehicle 1 to the periphery of the sewer pipe dredging site Using (2), the equipment of the present invention can be separated and transported to the site by unloading, and the sewer dredging can be performed by distributed installation as shown in FIG.

The present invention is a dredging equipment and construction method of sewage pipes that can perform dredging work of sewage in a short time economically while minimizing traffic obstacles in any site.

Therefore, the sewer dredging equipment and method of the present invention constructed and operated as described above, dredging of the sludge is adjusted by moving the knob of the adjustment lever while observing the dredging situation in the sewer pipe by the CCTV monitor installed on the ground. High-pressure washing water is sprayed to the surface of the structure within the sewage pipe as well as in the poor place, and the dredging pipe is completely washed and dredged in a short time, thereby improving reliability of dredging.

In the existing method, the sewage pipe dredging equipment, a vacuum suction high pressure hose that sucks wires and sludges to draw the dredging equipment and transports them to the outside of the sewer pipe, a hydraulic hose for supplying hydraulic pressure to drive the device, and a washing water supply Since the high pressure hose, etc. is introduced into the sewage pipe, the sludge is removed by reciprocating the entire inside of the sewage pipe for several times.

Since it takes a lot of time and effort to enter and operate the above devices inside the sewage pipe, the existing method was the biggest challenge to improve the difficult work of entering and adjusting the necessary equipment into the sewage pipe,

In the present invention, since there is no equipment to enter the sewage pipe and the equipment is installed in the manhole, all of the difficult work of the existing sewage pipe dredging equipment is omitted, thereby facilitating dredging work of the sewer pipe.

In addition, even in the narrow alley where the existing equipment was not able to enter the bulky, the present invention can easily dredging the sewer pipe while minimizing the entry traffic barriers. In addition to the small dredging pipe dredging, the large sewage pipe sweeps sludge while spraying a large amount of washing water at a time, and thus, the performance of the sewer pipe dredging equipment and the method of the present invention is much better than the existing sewer pipe dredging equipment or method.

In addition, the conventional washing water cleaning device has a small diameter of the nozzle for spraying the washing water, and when using water with foreign substances such as sewage in the sewer pipe, the foreign substances may block the nozzle so that the sewage cannot be used, so only clean tap water should be used. Since the wash water cannot be reused, tap water must be supplied continuously until the dredging work is completed by vehicle.

Since the amount of momentary spray is small, sludge removal work in sewage pipe is less efficient, so the time required for dredging of sewage pipe becomes longer, and as a result, the required amount of washing water increases.

The equipment and method of the present invention can reuse the washing water while using the sewage in the sewage pipe as the washing water, but the amount of the instantaneous spraying water is much higher than that of the existing sewer pipe dredging equipment. Compared to the equipment and the method, the amount of the washing water sprayed at the instant while consuming much less water is drastically reduced, and the time required for dredging the sewage pipe can be reduced to about 1/3. The economics will also provide an excellent advantage.

Claims (3)

An engine for generating power required by all the drive units of the present invention; A hydraulic pump mounted to the drive shaft of the engine to convert the rotational force of the engine into high pressure hydraulic pressure; A hydraulic hose for distributing hydraulic pressure from the hydraulic pump to each driving device; A high pressure pump for pressurizing the washing water while being connected to the hydraulic hose to pressurize the washing water; A high pressure hose for supplying the washing water, which connects the high pressure pump for pressurizing the washing water and the washing water spraying device, and sends the high pressure washing water to the washing water injection pipe; A light and CCTV camera that can be photographed while shining brightly to observe the inside of the washing water spray pipe and the sewer pipe; A washing water spraying device comprising an adjusting plate, an adjusting lever, a frame of the spraying device, and a height-adjustable leg; A pump and sludge conveying hose which is connected to the high pressure hose for hydraulic distribution and pumps the sewage and sludge that has been swept away from the sprayed washing water and sewage pipe into the sludge settling tank through the sludge conveying hose; A sludge settling tank for settling sludge mixed with washing water and sewage; A high pressure pump for sludge extrusion attached to the bottom of the sludge settling tank to extrude the precipitated sludge; A high pressure hose for sludge transfer connected to the discharge port of the high pressure pump for sludge extrusion to transfer the sludge to the sludge transfer tank; A sludge conveying tank mounted on a loading box of a general cargo vehicle and receiving sludge conveyed from a high pressure hose for conveying sludge to convey the sludge to a sludge treatment plant; A sewer pipe closing device for closing an inlet of an adjacent sewer pipe so that the washing water mixed with sludge and sewage does not flow into an adjacent sewer pipe of the sewer pipe dredging the sludge; It is installed between the sludge sedimentation tank and the high pressure pump for pressurizing the washing water, and consists of a hose for supplying the washing water to send the high pressure pump for pressurizing the washing water to utilize the remaining sewage and the washing water as recycled washing water. Dredging equipment of sewer pipes If there is sewage in the sewage pipe to the extent that the method of the present invention is applied, only the sewage is used. If the sewage is insufficient, the washing water contained in the sludge sedimentation tank of the present invention and the sewage in the sewage pipe are used together as the washing water. While watching the CCTV camera mounted on the pipe of the washing water spraying device installed in the manhole at the entrance of the sewer pipe to dredging, and the monitor connected by electric wire, move the knob of the adjusting lever of the washing water spraying device from the ground to the direction of the pipe spraying water. Awards. Ha. Left. In order to prevent dredging of the sludge to be adjusted, a large amount of high pressure washing water is injected into the sewage pipe. By using the impact of the sprayed washing water and the strong water flow generated at the bottom of the sewer pipe by the sprayed washing water, the sludge deposited in the sewage pipe is swept out to the manhole opposite to the manhole installed with the washing water spraying device. The sewage, sludge and sprayed washing water in the sewage pipes swept out of the manhole are pumped into the tank for sedimentation on the ground to settle the sludge, and the sewage and washing water with sludge precipitated are sent to the high pressure pump for pressurizing the washing water. In order to sweep the sludge, it is repeatedly recycled with the washing water sprayed into the sewage pipe. A method of dredging sewage pipes by spraying a large amount of high pressure washing water with a small amount of washing water and sweeping the sludge out of the sewage pipe. Park a large sludge conveying vehicle in a large place far away from the dredging site, install a high pressure hose for sludge conveying between the sludge conveying vehicle and the high pressure pump for sludge extrusion at the dredging site, and transport the dredged sludge to sludge The method of transporting the tank to the vehicle's tank, making it easier to enter the sewer dredging in narrow alleys or roads where traffic is difficult to control, or where the vehicle used for sewer dredging is difficult.