A method of pipe sediment dredging and removal

Abstract

The application provides a pipeline deposit dredging and dredging method, a chain guide rail is installed in an inspection well and a drainage pipeline, a broken silt flushing unit is fixed to a suspension support, the broken silt flushing unit comprises a silt breaker and a high-pressure flushing gun which are controlled and operated by a water supply and power supply unit, the suspension support is hung on the chain guide rail, moves along the chain guide rail in the inspection well and the drainage pipeline, and the silt broken and flushed out by the broken silt flushing unit is removed by a silt pumping and collecting vehicle on the ground outside the inspection well. The application fully utilizes the internal space of the inspection well and the drainage pipeline, realizes the transportation and arrangement of the suspension support in the drainage pipeline through the ingenious design of the chain guide rail, and effectively breaks and removes the silt in the drainage pipeline through the cooperation of the silt breaker, the high-pressure flushing gun and the silt pumping and collecting vehicle. Compared with the prior art, the application has the outstanding characteristics of strong applicability, easy implementation, various functions, flexible operation and remarkable effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of municipal drainage, and relates to a method for dredging and desilting pipe deposits. BACKGROUND

[0002] Drainage pipes are engineering facilities for collecting and transporting urban domestic sewage, industrial wastewater and rainwater. In recent years, with the acceleration of urbanization in China, the number and scale of drainage pipe construction have been increasing year by year. The increasingly improved drainage pipe system provides convenience for the transportation of various types of sewage and rainwater in cities. However, with the gradual expansion of the drainage pipe system, problems such as water pollution and secondary disasters of the drainage pipe have gradually emerged.

[0003] Taking the separated rainwater pipe as an example, under the background of "frequent mixing of rainwater and sewage, uncontrolled discharge of car washing sewage, and a large amount of initial rainwater surface source pollution", the rainwater pipe has become a collection place for many types of sewage, which will have a huge impact on the water environment when discharged into rivers and lakes during rainy days. For the separated sewage pipe, the suspended particulate matter content in the sewage transported is high, and in the pipe section with large diameter and slow flow rate, the suspended particulate matter is easy to form sludge, causing pipe blockage. For the combined drainage pipe, the flow rate of sewage in the pipe with large diameter is slow during dry days, and the suspended particulate matter in the sewage is easy to form sludge; during rainy days, the sludge in the pipe is washed out due to the dramatic increase in water quantity, thereby causing frequent black and odorous problems in rivers and lakes.

[0004] At present, the desilting of the drainage pipe is only limited to the case of small pipe diameter, and generally uses high-pressure flushing guns, manual traction or push-pull methods to clean the particulate matter and sludge in the drainage pipe to the outside of the pipe or to the pipe with larger diameter. However, there is no effective desilting and slag removal technology for the drainage pipe with large diameter.

[0005] In addition, when using a high-pressure flushing gun to flush the sludge in the drainage pipe, the flushing effect is often weakened due to the presence of hard ingredients with large particle size in the sludge, and the sludge flushed out contains hard ingredients, which damages the suction equipment. Therefore, if the sludge in the drainage pipe can be broken before desilting, the flushing efficiency of the high-pressure flushing gun can be effectively improved, and the damage to the suction pump in the sludge collection truck can be effectively avoided.

[0006] Therefore, there is an urgent need in the market for a new desilting and dredging technology that can break hard ingredients in the sludge of the drainage pipe. SUMMARY

[0007] The purpose of the present application is to provide a pipeline sediment dredging and dredging method, by implementing appropriate engineering modification on the drainage pipeline and inspection well, fully utilizing the internal space of the drainage pipeline, transporting the sludge breaker and high-pressure flushing gun to the internal space of the drainage pipeline through the design of the chain guide rail and the suspension support, and timely cleaning and transporting the flushed sludge through the sludge collection vehicle on the ground outside the detection well, so as to realize the dredging and dredging of the drainage pipeline.

[0008] In order to achieve the above purpose, the technical scheme of the present application is as follows:

[0009] A pipeline sediment dredging and dredging method, characterized in that the method comprises

[0010] The installation stage

[0011] Step one: the sewage in the drainage pipeline is emptied in advance, so that the operator can enter the inspection well for operation;

[0012] Step two: install a chain guide rail in the inspection well, which comprises a driving sprocket, a driven pulley and a chain matched therewith;

[0013] Step three: fix two or more suspension supports on the chain, wherein the suspension support comprises a mesh cover, an extension rod and a hook connected with the extension rod;

[0014] Step four: adjust the length of the extension rod of the suspension support according to the pipe diameter and water level of the drainage pipeline, and fix the suspension support on the chain of the chain guide rail, and install the sludge breaker and high-pressure flushing gun in the mesh cover of the suspension support, so that the jet direction of the high-pressure flushing gun is the same as the flow direction of the sewage in the drainage pipeline, and the sludge breaker is located downstream of the high-pressure flushing gun;

[0015] Step five: drive the driving sprocket to rotate through the motor, and then drive the chain, so as to transport the suspension support with the sludge breaker and high-pressure flushing gun installed therein to the internal space of the drainage pipeline;

[0016] Step six: the sludge collection vehicle is located on the ground outside the inspection well;

[0017] Step seven: the drainage pipeline is normally filled with water;

[0018] Operation stage:

[0019] Step one: start the water supply and power supply unit, so that the sludge breaker and high-pressure flushing gun start to operate;

[0020] Step two: the sludge breaker first breaks the larger size and harder texture components in the sewer sludge, and stirs the sludge, and then the high-pressure flushing gun located upstream of the sewer flushes the sludge broken and stirred by the sludge breaker into the downstream inspection well, while the sludge collecting truck timely collects the flushed sludge through the sludge suction pipe and suction pump arranged at the bottom of the downstream inspection well;

[0021] Maintenance stage:

[0022] Step one: reverse rotation of the motor-driven sprocket, so that the high-pressure flushing gun and sludge breaker that need to be maintained are transported out to the top of the inspection well with the chain;

[0023] Step two: disassemble the high-pressure flushing gun and sludge breaker from the suspension bracket, and maintain and clean them;

[0024] Step three: re-fix the high-pressure flushing gun and sludge breaker on the suspension bracket, and rotate the motor-driven sprocket to transport the maintained high-pressure flushing gun into the sewer with the chain, and reopen the water supply and power supply unit.

[0025] Further, the chain guide rail comprises a supporting frame, a driving sprocket, a driven pulley and a chain cooperating therewith, the wheel surface of the driving sprocket and the driven pulley are located in the same plane as the axis of the sewer, the motor is connected with the driving sprocket for driving the driving sprocket to rotate and thus drive the chain to move, the driven pulley is provided with a wheel groove, the chain groove of the chain is engaged with the gear teeth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley; the installation mode of the chain guide rail is one of the following two modes:

[0026] First, the supporting frame, the fixed node, the frame base, the driving sprocket and the driven pulley are all installed in the inspection well, so that the chain is in a double-stranded U-shaped structure;

[0027] Second, part of the supporting frame and the driving sprocket are installed above the inspection well, and the fixed node, the frame base and the driven pulley are installed in the inspection well, so that the chain is in a single-stranded mouth-shaped structure.

[0028] Further, the suspension bracket comprises a mesh cover, an extension rod and a hook connected with the extension rod, the hook penetrates through the pin shaft of the chain in the chain guide rail, so as to connect the suspension bracket with the chain, the mesh cover is installed with the sludge breaker and the high-pressure flushing gun, and the jet direction of the high-pressure flushing gun is the same as the flow direction of the sewage in the sewer, and the sludge breaker is located downstream of the high-pressure flushing gun; the sludge collecting truck comprises a sludge storage tank, a suction pump and a sludge suction pipe, and the sludge suction pipe is arranged at the bottom of the inspection well downstream of the sludge breaker.

[0029] Further, the supporting frame and the inspection well sidewall are provided with fixed joints, which are the connecting points of the supporting frame and the inspection well sidewall, and the connecting mode is welding, bonding or expansion screw fixing; the bottom of the supporting frame is provided with a frame base, which is arranged at the bottom of the inspection well, and the bottom surface is flush with the bottom surface of the inspection well.

[0030] Further, the driving sprocket is located at the top of the supporting frame, and the driven pulley is located at the bottom of the supporting frame; the tooth pitch of the driving sprocket is 10-15 cm, and the tooth thickness is 7-9 cm; the wheel groove width of the driven pulley is 5-8 cm, and the wheel groove depth is 6-10 cm; the wheel surface of the driving sprocket and the driven pulley are located in the same plane as the axis of the drainage pipeline.

[0031] Further, the suspension support includes a mesh cover, an extension rod and a hook connected with the extension rod, the hook penetrates through the pin shaft of the chain in the chain guide rail, so that the suspension support is connected with the chain, the mesh cover is internally provided with a sludge breaker and a high-pressure flushing gun, the spraying direction of the high-pressure flushing gun is the same as the flow direction of the sewage in the drainage pipeline, and the sludge breaker is located downstream of the high-pressure flushing gun.

[0032] Further, the sludge suction collecting vehicle includes a sludge storage tank, a suction pump and a sludge suction pipe, and the sludge suction pipe is arranged at the bottom of the inspection well downstream of the sludge breaker.

[0033] Further, each suspension support is provided with two or more hooks to limit the axial displacement of the suspension support in the drainage pipeline.

[0034] Further, the upper part of the hook is a hook, and the lower part is a connecting rod connected with the mesh cover, the connecting rod needs to have a certain length, so that the suspension support can smoothly pass through the right-angle bend when moving with the chain.

[0035] Further, the suspension support includes double-sided extension rods located at both sides of the mesh cover, the double-sided extension rods are elastic extension rods with universal wheels at the ends, the extension direction is perpendicular to the axis of the drainage pipeline, and the double-sided extension rods are used to limit the lateral displacement of the suspension support in the drainage pipeline.

[0036] Further, the sludge breaker and the high-pressure flushing gun can be simultaneously arranged on one suspension support, or can be respectively arranged on two suspension supports.

[0037] The present application fully utilizes the internal space of the inspection well and the drainage pipeline, realizes the transportation and arrangement of the suspension support in the drainage pipeline through the ingenious design of the chain guide rail, and effectively breaks and removes the sludge in the drainage pipeline through the cooperation of the sludge breaker, the high-pressure flushing gun and the sludge suction collecting vehicle.

[0038] Compared with the prior art in the same field, the present application has the following remarkable features:

[0039] 1. Strong applicability

[0040] The system can adapt to different forms and pipe diameters of drainage pipes for the dredging and desilting of the drainage pipes through the reasonable layout of the chain guide rail, the suspension support, the sludge breaker, the high-pressure flushing gun and the sludge pumping and collecting vehicle.

[0041] 2. Easy to implement

[0042] The existing space of the inspection well and the drainage pipe is fully utilized for simple modification, and the system has less engineering measures, small investment scale and is easy to implement and promote.

[0043] 3. Flexible operation

[0044] Through the design of the chain guide rail and the suspension support, the sludge breaker and the high-pressure flushing gun can be conveniently transported from the outside of the inspection well to the inside of the drainage pipe when the system is started, and can be conveniently transported to the outside of the inspection well when the system is maintained.

[0045] 4. Multiple functions

[0046] Through the cooperation of the sludge breaker, the high-pressure flushing gun and the sludge pumping and collecting vehicle, the functions of sludge breaking, stirring, flushing and pumping are integrated, so that the system realizes multifunctional and all-round dredging and desilting of the drainage pipe.

[0047] 5. Remarkable effect

[0048] By breaking the components with large particle size and hard texture in the sludge in the drainage pipe first, the flushing efficiency of the high-pressure flushing gun is effectively improved, and the damage of the suction pump in the sludge pumping and collecting vehicle is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 It is a front view of a pipeline sediment dredging and desilting system of the present application (the chain guide rail is installed in a "U-shaped" structure).

[0050] Figure 2 It is a front view of a pipeline sediment dredging and desilting system of the present application (the chain guide rail is installed in a "U-shaped" structure).

[0051] Figure 3 It is a front view of a chain guide rail in the system of the present application (the chain guide rail is installed in a "U-shaped" structure).

[0052] Figure 4 It is a front view of a chain guide rail in the system of the present application (the chain guide rail is installed in a "U-shaped" structure).

[0053] Figure 5Front view of the hanging support with the sludge breaker nested in the system of the present application.

[0054] Figure 6 Front view of the hanging support with the sludge breaker nested in the system of the present application. Figure 5

[0055] Figure 7 Front view of the hanging support with the high-pressure flushing gun nested in the system of the present application.

[0056] Figure 8 Front view of the hanging support with the high-pressure flushing gun nested in the system of the present application. Figure 7

[0057] The numbering in the figures means:

[0058] 1 - chain guide, 11 - support frame, 12 - fixed node, 13 - frame base, 14 - driving sprocket, 15 - driven pulley, 16 - chain, 17 - electric motor;

[0059] 2 - hanging support, 21 - hook, 22 - telescopic rod, 23 - mesh cover, 24 - lateral telescopic rod;

[0060] 3 - sludge breaking and flushing unit, 31 - sludge breaker, 32 - high-pressure flushing gun;

[0061] 4 - water and power supply unit;

[0062] 5 - sludge suction and collection vehicle;

[0063] 6 - inspection well;

[0064] 7 - sewage;

[0065] 8 - drainage pipe;

[0066] 9 - ground. DETAILED DESCRIPTION

[0067] The application will be further described in detail in connection with the following specific examples and drawings. The process, conditions, experimental methods, etc. for implementing the present application are all general knowledge and common sense in the art, except for the following specifically mentioned content, and the present application has no special limitation.

[0068] As Figure 1 , Figure 2 ​​As shown in the figure, a pipeline sediment dredging and cleaning system is characterized in that a chain guide rail 1 is installed in the inspection well 6 and the drainage pipeline 8, a suspended support 2 is fixed with a sediment flushing unit 3, the sediment flushing unit 3 comprises a sludge breaker 31 and a high-pressure flushing gun 32, the suspended support 2 is suspended on the chain guide rail 1 and moves along the chain guide rail 1 in the inspection well and the drainage pipeline, a sludge suction truck 5 is arranged on the ground outside the inspection well for cleaning and transporting the broken and flushed sludge of the sediment flushing unit 3. A water and power supply unit 4 supplies power to the sediment flushing unit 3 for controlling the operation of the sediment flushing unit 3.

[0069] As shown in the figure, two suspended supports 2 are arranged on the chain guide rail 1, the sludge breaker 31 is installed on one suspended support, and the high-pressure flushing gun 32 is installed on the other suspended support, the jet direction of the high-pressure flushing gun 32 is the same as the flow direction of the sewage 7 in the drainage pipeline, and the sludge breaker 31 is located downstream of the high-pressure flushing gun 32. The sludge suction truck 5 comprises a sludge storage tank, a suction pump and a sludge suction pipe, and the sludge suction pipe is placed at the bottom of the inspection well downstream of the sludge breaker 31.

[0070] As shown in the figure, Figure 3 , Figure 4 The chain guide rail comprises a supporting frame 11, the supporting frame 11 is installed with a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith, the wheel surface of the driving sprocket 14 and the driven pulley 15 is in the same plane with the axis of the drainage pipeline 8, a motor 17 is connected with the driving sprocket 14 for driving the rotation of the driving sprocket 14 and the movement of the chain 16, the driven pulley 15 is provided with a wheel groove, the chain groove of the chain 16 is engaged with the gear teeth of the driving sprocket 14, and the outer side of the chain 16 is engaged with the wheel groove of the driven pulley 15. The supporting frame and the side wall of the inspection well are provided with a fixed joint 12, the fixed joint 12 is the joint of the supporting frame and the side wall of the inspection well, and the joint mode is welding, bonding or expansion screw fixing; the bottom of the supporting frame 11 is provided with a frame base 13, the frame base 13 is placed at the bottom of the inspection well, and the bottom surface thereof is in conformity with the bottom surface of the inspection well. The driving sprocket 14 is located at the top of the supporting frame 11, and the driven pulley 15 is located at the bottom of the supporting frame 11; the pitch of the gear teeth of the driving sprocket 14 is 10-15 cm, and the thickness of the gear teeth is 7-9 cm; the width of the wheel groove of the driven pulley 15 is 5-8 cm, and the depth of the wheel groove is 6-10 cm; the wheel surface of the driving sprocket 14 and the driven pulley 15 is in the same plane with the axis of the drainage pipeline 8.

[0071] The installation mode of the chain guide rail has two modes:

[0072] One of them is as shown in the figure, Figure 3As shown, the supporting frame, the fixed node, the frame base, the driving sprocket and the driven pulley are all installed in the inspection well 6, so that the chain 16 is in a double-stranded U-shaped structure.

[0073] Secondly, as shown in Figure 4 , a part of the supporting frame and the driving sprocket are installed above the inspection well, and the fixed node, the frame base and the driven pulley are installed in the inspection well 6, so that the chain 16 is in a single-stranded U-shaped structure.

[0074] As shown in Figure 5 , Figure 6 , the hanging support 2 includes a net cover 23, an extension rod 22 connected with the net cover 23 and a hook 21 connected with the extension rod 22. The hook 21 penetrates the pin shaft of the chain in the chain guide rail, so as to connect the hanging support 2 with the chain. A sludge breaker 31 is installed in the net cover. Double-sided extension rods 22 are arranged on both sides of the net cover. The double-sided extension rods 22 are elastic extension rods with universal wheels at the ends. The extension direction is perpendicular to the axis of the drainage pipeline 8, and is used to limit the lateral displacement of the hanging support 2 in the drainage pipeline 8. The number of the hooks 21 is two or more, so as to limit the axial displacement of the hanging support 2 in the drainage pipeline 8. The extension rod 22 needs to have a certain length, so that the hanging support 2 can smoothly pass through the right-angle bend when moving with the chain.

[0075] As shown in Figure 6 , Figure 7 , the hanging support 2 includes a net cover 23, an extension rod 22 connected with the net cover 23 and a hook 21 connected with the extension rod 22. The hook 21 penetrates the pin shaft of the chain 16 in the chain guide rail, so as to connect the hanging support 2 with the chain. A high-pressure flushing gun 32 is installed in the net cover. Double-sided extension rods 22 are arranged on both sides of the net cover. The double-sided extension rods 22 are elastic extension rods with universal wheels at the ends. The extension direction is perpendicular to the axis of the drainage pipeline 8, and is used to limit the lateral displacement of the hanging support 2 in the drainage pipeline 8. The number of the hooks is two or more, so as to limit the axial displacement of the hanging support 2 in the drainage pipeline 8. The extension rod 22 needs to have a certain length, so that the hanging support 2 can smoothly pass through the right-angle bend when moving with the chain.

[0076] The method for using the system, characterized in that the method comprises

[0077] The installation stage

[0078] Step one: the sewage 7 in the drainage pipeline 8 is pre-evacuated, so that the operator can enter the inspection well for operation;

[0079] Step two: install the chain guide rail 1 in the inspection well, the chain guide rail 1 includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0080] Step three: fix two suspension supports on the chain, the suspension support includes a mesh cover 23, an extension rod 22 and a hook 21 connected with the extension rod;

[0081] Step four: adjust the length of the extension rod 22 of the suspension support according to the pipe diameter and water level of the drainage pipe 8, fix the suspension support 2 on the chain 16 of the chain guide rail 1, and install the sludge breaker 31 and the high-pressure flushing gun 32 in the mesh cover 23 of the suspension support 2, so that the spraying direction of the high-pressure flushing gun 32 is the same as the flow direction of the sewage 7 in the drainage pipe 8, and the sludge breaker 31 is located downstream of the high-pressure flushing gun 32;

[0082] Step five: drive the driving sprocket 14 to rotate by the motor 17, and then drive the chain 16, so as to transport the suspension support 2 with the sludge breaker 31 and the high-pressure flushing gun 32 to the inside of the drainage pipe 8;

[0083] Step six: the sludge collecting vehicle 5 is located on the ground outside the inspection well;

[0084] Step seven: the drainage pipe 8 is normally filled with water;

[0085] Operation stage:

[0086] Step one: start the water supply and power supply unit 4, so that the sludge breaker 31 and the high-pressure flushing gun 32 start to operate;

[0087] Step two: the sludge breaker 31 first breaks the components with larger particle size and harder texture in the sludge in the drainage pipe 8, and stirs the sludge, and then the high-pressure flushing gun 32 located upstream of the drainage pipe 8 flushes the sludge broken and stirred by the sludge breaker 31 into the downstream inspection well 6, and the sludge collecting vehicle 5 timely collects the flushed sludge through the sludge pipe and the suction pump arranged at the bottom of the downstream inspection well 6.

[0088] Maintenance stage:

[0089] Step one: reverse rotate the driving sprocket 14 by the motor 17, so that the high-pressure flushing gun 32 and the sludge breaker 31 to be maintained are transported out to the top of the inspection well 6 along with the chain;

[0090] Step two: disassemble the high-pressure flushing gun 32 and the sludge breaker 31 from the suspension support 2, and maintain and clean them;

[0091] Step three: re-fix the high-pressure flushing gun 32 and the sludge breaker 31 on the hanging support, and rotate the driving sprocket by the motor, so that the repaired high-pressure flushing gun 32 is conveyed into the drainage pipeline 6 by the chain, and the water supply and power supply unit 4 is re-started.

[0092] During the running stage, the sludge breaker 31 and the high-pressure flushing gun 32 can be driven to move in the moving inspection well 6 while breaking and flushing the sludge by the motor 17 driving the chain 16.

[0093] The actual effect of the embodiment shows that the deposited sludge in the pipeline section is effectively removed after the system is continuously operated for 4 hours, and the sludge removal rate reaches 83.6%.

[0094] The protection scope of the present application is not limited to the above embodiment. The changes and advantages that can be thought by those skilled in the art without departing from the spirit and scope of the present application are included in the present application, and are protected by the appended claims.

Claims

1. A method for clearing and removing sediment from pipes, characterized in that... The method includes Installation phase: Step 1: Empty the sewage in the drainage pipe beforehand so that operators can enter the inspection well to work; Step 2: Install chain-type guide rails inside the inspection well. The chain-type guide rails include a drive sprocket, a driven pulley, and a chain that works with them. Step 3: Fix two or more suspension brackets to the chain. The suspension bracket includes a mesh cover, a telescopic rod, and a hook connected to the telescopic rod. Step 4: Adjust the length of the telescopic rod of the suspended bracket according to the diameter and water level of the drainage pipe, and fix the suspended bracket on the chain of the chain guide rail. At the same time, install the sludge crusher and the high-pressure flushing gun inside the mesh cover of the suspended bracket, so that the spray direction of the high-pressure flushing gun is the same as the flow direction of the sewage in the drainage pipe, and the sludge crusher is located downstream of the high-pressure flushing gun. Step 5: The motor drives the drive sprocket to rotate, which in turn drives the chain, thereby transporting the suspended bracket equipped with the sludge crusher and high-pressure flushing gun into the drainage pipe. Step Six: The sludge removal and collection truck is positioned on the ground outside the inspection well; Step 7: Water enters the drainage pipe normally; Operation phase: Step 1: Turn on the water and power supply units to start the sludge crusher and high-pressure flushing gun; Step 2: The sludge crusher first breaks down the larger and harder particles in the sludge of the drainage pipe and stirs up the sludge. Then, the high-pressure flushing gun located upstream of the drainage pipe washes the sludge crushed and stirred by the sludge crusher into the downstream inspection well. At the same time, the sludge collection truck uses the sludge suction pipe and suction pump set at the bottom of the downstream inspection well to promptly pump the flushed sludge into the sludge collection tank. The chain-type guide rail includes a support frame, on which a drive sprocket, a driven pulley, and a chain that cooperate with it are mounted. An electric motor is connected to the drive sprocket and is used to drive the drive sprocket to rotate, thereby driving the chain to move. The driven pulley is provided with a groove, and the groove of the chain meshes with the teeth of the drive sprocket. The outer side of the chain engages with the groove of the driven pulley. The supporting frame and the manhole sidewall are provided with fixed joints, which are the connection points between the supporting frame and the manhole sidewall; the bottom of the supporting frame is provided with a frame base, which is placed at the bottom of the manhole and its bottom surface matches the bottom surface of the manhole. The hook passes through the pin of the chain in the chain-type guide rail, thereby connecting the suspension bracket to the chain; The suspended support includes two telescopic rods on both sides of the mesh cover. The two telescopic rods are elastic telescopic rods with universal wheels at their ends. The telescopic direction is perpendicular to the axis of the drainage pipe and is used to limit the lateral displacement of the suspended support in the drainage pipe. In step two of the operation phase, the electric motor drives the chain drive, so that the sludge crusher and the high-pressure flushing gun move inside the mobile inspection well while crushing and flushing the sludge. The driving sprocket is located at the top of the support frame, and the driven pulley is located at the bottom of the support frame; the tooth pitch of the driving sprocket is 10-15 cm, and the tooth thickness is 7-9 cm; the groove width of the driven pulley is 5-8 cm, and the groove depth is 6-10 cm; the wheel surfaces of both the driving sprocket and the driven pulley are located on the same plane as the axis of the drainage pipe. The upper part of the hook is a hook-shaped object, and the lower part is a telescopic rod connected to the mesh cover. The telescopic rod needs to have a certain length so that the suspended bracket can smoothly pass through the right-angle bend when it moves with the chain. Each suspension bracket has two or more hooks to limit the axial displacement of the suspension bracket in the drainage pipe.

2. The method as described in claim 1, characterized in that, The method also includes Maintenance phase: Step 1: The motor rotates the drive sprocket in reverse, so that the high-pressure flushing gun and sludge crusher that need to be inspected are transported out to the top of the inspection well along the chain; Step 2: Remove the high-pressure flushing gun and sludge crusher from the hanging bracket for inspection and cleaning; Step 3: Re-fix the high-pressure flushing gun and sludge crusher onto the suspended bracket, and use the motor to rotate the drive sprocket so that the repaired high-pressure flushing gun is transported to the drainage pipe along the chain, and the water and power supply units are restarted.

3. The method as described in claim 1, characterized in that, The sludge collection vehicle includes a sludge storage tank, a suction pump, and a sludge suction pipe, with the sludge suction pipe placed at the bottom of the inspection well downstream of the sludge crusher.

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