Dredging device

Abstract

The utility model relates to the technical field of municipal engineering, in particular to a desilting device which comprises a bottom plate, a desilting device body and a desilting device body. A filtering component is arranged in the water tank and divides the interior of the water tank into a first area and a second area; sewage in the second area is filtered by the filtering component to become clear water which enters the first area; the two ends of the sand suction pump are connected with the second area and the sludge suction pipe respectively; the sand suction pump is used for providing suction force for the sludge suction pipe and feeding the sludge sucked by the sludge suction pipe into the second area; the two ends of the high-pressure water pump are connected with the first area and the high-pressure water injection pipe respectively; and the high-pressure water pump is used for pressurizing clean water in the first area and inputting the clean water into the high-pressure water injection pipe for pipeline flushing and dredging. The water tank, the sand suction pump and the high-pressure water pump are integrated, so that the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering, in particular to a silt clearing device. Background Art

[0002] Municipal pipelines are an important part of the urban environment. If the pipelines are blocked or damaged, they may cause problems such as waterlogging and flooding, affecting the urban environment. Pipeline desilting refers to clearing the pipelines, cleaning the silt and other waste inside the pipelines, and keeping the pipelines unobstructed. The current pipeline desilting method is mainly to use a high-pressure cleaning vehicle to extend a water hose into the pipeline, spray water into the pipeline to clear the silt inside the pipeline; then use a sludge suction truck to extract the sewage and mud in the well chamber. Desilting and dredging work requires multiple devices to assist in the operation, and requires multiple round trips to load clean water, which has the problems of low work efficiency and high cost. Utility Model Content

[0003] The purpose of the utility model is to provide a dredging device in order to solve at least one of the above technical problems.

[0004] The utility model provides a dredging device, comprising:

[0005] A bottom plate, on which a water tank is fixedly arranged;

[0006] The water tank is provided with a filter component, and the filter component divides the interior of the water tank into a first area and a second area, the first area is used to hold clean water, and the second area is used to hold sewage; the sewage in the second area is filtered by the filter component and becomes clean water and enters the first area;

[0007] A sand suction pump, wherein both ends of the sand suction pump are connected to the second area and the sludge suction pipe respectively; the sand suction pump is used to provide suction for the sludge suction pipe and send the sludge sucked by the sludge suction pipe into the second area;

[0008] A high-pressure water pump, wherein both ends of the high-pressure water pump are respectively connected to the first area and the high-pressure water jet pipe; the high-pressure water pump pressurizes the clean water in the first area and inputs it into the high-pressure water jet pipe to flush and dredge the pipeline.

[0009] Preferably, the dredging device further comprises: a plurality of wheels, a handle, and a pull ring;

[0010] The multiple wheels are respectively arranged at the four corners of the bottom plate, and the multiple wheels are used to move the bottom plate;

[0011] The handle and the pull ring are respectively arranged at two opposite ends of the bottom plate, the handle is used to manually push and pull the bottom plate, and the pull ring is used to connect a trailer or to fix it.

[0012] Preferably, the plurality of wheels comprises:

[0013] A universal wheel disposed at the same end of the base plate as the handle, wherein the universal wheel is provided with a locking mechanism, and the direction of the universal wheel can be locked by adjusting the locking mechanism, and / or the universal wheel can be locked;

[0014] A fixed wheel fixed in the direction of being arranged at the same end of the bottom plate as the pull ring.

[0015] Preferably, the filter component comprises: a filter mesh layer and a filter cloth layer;

[0016] The filter layer is arranged on the second area side, and the filter layer is used to filter impurities and particulate matter in the sewage;

[0017] The filter cloth layer is arranged on the first region side, and the filter cloth layer is used to absorb suspended matter and impurities in sewage.

[0018] Preferably, a fixed slideway is provided on the inner wall of the water tank;

[0019] The filter component further comprises a fixing box for fixing the filter screen layer and the filter cloth layer, and a slide groove is arranged on the outer wall of the fixing box;

[0020] The fixed box is slidably connected to the fixed slideway via the slide groove.

[0021] Preferably, the filter member further comprises: a buffer layer;

[0022] The buffer layer is arranged on the upper part of the second area in the fixed box, and the sludge sucked by the sludge suction pipe contacts the filter layer after passing through the buffer layer.

[0023] Preferably, a drainage switch is also provided at the bottom of the fixed box body, and the clean water in the fixed box body can be controlled to enter the water tank by turning on the drainage switch.

[0024] Preferably, the silt removal device further comprises: an engine; the engine is connected to the sand suction pump and the high-pressure water pump respectively, and the engine provides power for the sand suction pump and the high-pressure water pump.

[0025] Preferably, the engine drives the sand suction pump and the high-pressure water pump simultaneously through a belt;

[0026] Alternatively, the engine is connected to the sand suction pump and the high-pressure water pump respectively through a clutch; the clutch is operated to control the connection or disconnection of the belt with the sand suction pump and the high-pressure water pump, thereby realizing the transmission of the sand suction pump and the high-pressure water pump respectively.

[0027] The utility model integrates a water tank, a sand suction pump and a high-pressure water pump into one device, and can simultaneously realize the functions of flushing pipelines and pumping out sewage and mud through one device, without the need for an external water tank or water truck, thereby improving operation efficiency and reducing operation costs.

[0028] The utility model uses a water tank for flushing water and sucked sludge. The sewage is treated and filtered by a filtering component arranged in the water tank to become clean water for high-pressure flushing of water pipes. There is no need for operators to go back and forth many times to add clean water to the water tank, thus realizing the reuse of water resources, saving water resources, reducing work difficulty and improving work efficiency.

[0029] The utility model has the advantages of small size, convenient transportation, low manufacturing cost and low operating difficulty. It can also be used conveniently in a small space. It can extract and discharge the flowing mud while flushing the pipeline, effectively saving time and reducing the time and intensity of manual work. Compared with the large high-pressure water jet truck and mud suction truck used in the prior art, it has lower cost and higher equipment utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of the overall structure of a dredging device provided in one embodiment of the utility model;

[0032] Figure 2 A schematic diagram of the structure of a filter component provided in one embodiment of the utility model Figure 1 ;

[0033] Figure 3 A schematic diagram of the structure of a filter component provided in one embodiment of the utility model Figure 2 ;

[0034] Figure 4 A schematic diagram of dredging operation of a dredging device provided in one embodiment of the utility model.

[0035] In the figure: 1, bottom plate, 2, water tank, 21, first area, 22, second area, 3, filter element, 31, filter layer, 32, filter cloth layer, 33, buffer layer, 34, chute, 35, drainage switch, 36, fixed box body, 4, sand suction pump, 5, sludge suction pipe, 6, high-pressure water pump, 7, high-pressure water injection pipe, 81, universal wheel, 82, fixed wheel, 9, handle, 10, pull ring, 11, engine. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Figure 1 A schematic diagram of the overall structure of a dredging device provided in one embodiment of the utility model; Figure 4 A schematic diagram of a dredging operation of a dredging device provided in accordance with an embodiment of the present invention. Figure 1 and Figure 4 As shown, according to an embodiment of the utility model, a dredging device includes:

[0038] A bottom plate 1, on which a water tank 2 is fixedly arranged;

[0039] In order to maintain the stability of the device, the water tank 2 is fixedly connected to the bottom plate 1 by welding or clamping to ensure the stability of the water tank 2 during the movement of the bottom plate.

[0040] The water tank 2 is provided with a filter component 3, which divides the interior of the water tank 2 into a first area 21 and a second area 22. The first area 21 is used to hold clean water, and the second area 22 is used to hold sewage. The sewage in the second area 22 is filtered by the filter component 3 and becomes clean water and enters the first area 21.

[0041] A sand suction pump 4, both ends of which are connected to the second area 22 and the sludge suction pipe 5 respectively; the sand suction pump 4 is used to provide suction for the sludge suction pipe 5, and to send the sludge sucked by the sludge suction pipe 5 into the second area 22;

[0042] The sand suction pump 4 is connected to the sludge suction pipe 5, and the sludge suction pipe 5 is placed in the well where sewage and mud need to be sucked out. Driven by the sand suction pump 4, the sludge suction pipe 5 sucks out sewage and mud, and the sucked sludge is sent to the second area 22 through the sand suction pump 4;

[0043] The high-pressure water pump 6 has two ends connected to the first area 21 and the high-pressure water jet pipe 7 respectively; the high-pressure water pump 6 pressurizes the clean water in the first area 21 and inputs it into the high-pressure water jet pipe 7 for pipeline flushing and dredging.

[0044] When performing the flushing operation, the high-pressure water jet pipe 7 is extended into the interior of the pipe to be cleared, and the high-pressure water pump 6 sucks clean water from the first area 21 in the water tank 2 for containing clean water and pressurizes it, and the pressurized clean water is sprayed out through the high-pressure water jet pipe 7 to flush the silt inside the pipe to be cleared, thereby clearing the inside of the pipe.

[0045] The utility model integrates a water tank, a sand suction pump and a high-pressure water pump into one device, and can simultaneously realize the functions of flushing pipes and pumping out sewage and mud through one device, without the need for an external water tank, thereby improving the operation efficiency and reducing the operation cost. The utility model uses a water tank for flushing water and suction sludge, and treats and filters the sewage through a filtering component arranged in the water tank to become clean water for high-pressure flushing water pipe operations. There is no need for operators to go back and forth many times to add clean water to the water tank, thus realizing the reuse of water resources, saving water resources, reducing the difficulty of work, and improving the operation efficiency.

[0046] According to an embodiment of the utility model, the silt removal device further comprises: a plurality of wheels, a handle 9, and a pull ring 10;

[0047] A plurality of wheels are respectively arranged at the four corners of the base plate 1, and the plurality of wheels are used to move the base plate 1;

[0048] The handle 9 and the pull ring 10 are respectively arranged at two opposite ends of the bottom plate 1 . The handle 9 is used for manually pushing and pulling the bottom plate 1 , and the pull ring 10 is used for connecting a trailer or for fixing.

[0049] During the operation, the staff can push the dredging device by the handle 9 to move the device to the operation area. When the operation area is far away, the pull ring 10 can be connected to the trailer; or the dredging device can be placed on the trailer, and the dredging device and the trailer are fixedly connected by the pull ring 10, and the dredging device can be moved to the operation area by the trailer.

[0050] When the utility model is used for short-distance movement, the dredging device can be moved only by manual labor, and the operation is simple; when the dredging device is used for long-distance movement, it can be towed or moved by a vehicle; the utility model has various moving modes, can adapt to a wider range of working environments, is easy to operate, and improves work efficiency.

[0051] According to one embodiment of the utility model, the plurality of wheels include:

[0052] A universal wheel 81 is provided at the same end of the base plate 1 as the handle 9, and a locking mechanism is provided on the universal wheel 81. By adjusting the locking mechanism, the direction of the universal wheel 81 can be locked, and / or the universal wheel 81 can be locked;

[0053] A fixed wheel 82 is provided at the same end of the bottom plate 1 as the pull ring 10 and is fixed in a certain direction.

[0054] The universal wheel 81 and the fixed wheel 82 are covered with rubber material, which reduces wear and tear while providing a certain friction force;

[0055] The universal wheel 81 is provided with a locking mechanism, which includes a pedal, a first locking part, a second locking part, and a rotatable steering shaft. When the pedal is locked in the first gear, the first locking part locks the direction of the steering shaft, and the direction of the universal wheel 81 is locked, and it can only move in a fixed direction; when the pedal is locked in the second gear, the second locking part locks the universal wheel 81, and the universal wheel 81 cannot move. This universal wheel 81 is a common wheel form in the art, and only a simple function introduction is given here without further explanation. As long as the wheel can achieve the above functions, it can be used as the universal wheel 81 in the utility model.

[0056] The utility model can make the movement of the dredging device more convenient and the fixing method simpler by arranging universal wheels with a brake system and a direction locking system on the bottom plate.

[0057] Figure 2 A schematic diagram of the structure of a filter component provided in one embodiment of the utility model Figure 1 ; Figure 3 A schematic diagram of the structure of a filter component provided in one embodiment of the utility model Figure 2 .like Figure 2 and Figure 3 As shown, according to one embodiment of the present utility model, the filter component 3 includes:

[0058] A filter screen layer 31 and a filter cloth layer 32;

[0059] The filter layer 31 is disposed on the second area 22 side, and the filter layer 31 is used to filter impurities and particles in the sewage;

[0060] The filter cloth layer 32 is disposed on the side of the first area 21 , and the filter cloth layer 32 is used to absorb suspended matter and impurities in the sewage.

[0061] The utility model filters sewage by using a combination of a filter screen and a filter cloth, has high filtering efficiency and good effect, can quickly filter sewage in the second area and allow it to enter the first area for use as clean water, thereby achieving the reuse of water resources and saving water resources.

[0062] According to one embodiment of the utility model, a fixed slide is provided on the inner wall of the water tank 2.

[0063] The filter component 3 further includes a fixed box 36 for fixing the filter screen layer 31 and the filter cloth layer 32, and a slide groove 34 is provided on the outer wall of the fixed box 36;

[0064] The fixed box 36 is slidably connected to the fixed slideway through the slide groove 34 .

[0065] The chute 34 and the fixed slideway are both arranged vertically and have matching sizes. When the silt removal device is needed, the chute 34 on the outer wall of the fixed box body 36 is slidably connected to the fixed slideway on the inner wall of the water tank 2. Under the action of gravity, the chute 34 is fixedly connected to the fixed slideway. The area connected to the fixed filter layer is the second area 22, and the area connected to the filter cloth layer 32 is the first area 21. The sludge sucked by the sludge suction pipe 5 is sent to the second area 22. The sewage in the second area 22 can enter the first area 21 only after passing through the filter mesh layer 31 and the filter cloth layer 32. When the use is finished, the fixed box body 36 is taken out from the fixed slideway, the component 3 can be separated from the water tank 2, and the inside of the fixed box body 36 can be cleaned. The operation method is simple.

[0066] Preferably, according to an implementation of this embodiment, Figure 2 As shown, the top of the fixed box 36 is set as the second area 22, and the sewage is injected into the fixed box 36 from the second area 22. After being filtered by the filter layer 31, the sewage flows through the filter cloth layer 32 to become clean water and enter the first area 21; the filter layer 31 and the filter cloth layer 32 have an overlapping area, and the bottom of the filter layer 31 is provided with a waterproof bottom surface, which is connected to the filter cloth layer 32. The water filtered by the filter layer 31 flows to the filter cloth layer 32 under the action of gravity, and can enter the first area 21 only after passing through the filter cloth layer.

[0067] Preferably, according to another implementation of this embodiment, as Figure 3 As shown, the filter layer 31 and the filter cloth layer 32 have the same size and completely overlap, and the sizes of the filter layer 31 and the filter cloth layer 32 match the cross-sectional size of the inner wall of the fixed box 36, and the side in contact with the filter layer 31 is set as the second area 22; Figure 3 The filter layer 31 and the filter cloth layer 32 are horizontally arranged to separate the fixed box 36 into upper and lower spaces. In actual use, the filter layer 31 and the filter cloth layer 32 can also be vertically arranged to separate the fixed box 36 into left and right spaces, and the side in contact with the filter layer 31 is set as the second area 22; the direction of the filter layer 31 and the filter cloth layer 32 is set according to actual use requirements and is not limited here.

[0068] The filter component of the utility model is connected with the inner wall of the water tank by inserting into the fixed slideway, so the installation and disassembly are simple and the working efficiency is improved.

[0069] According to an embodiment of the present utility model, the filter component 3 further includes: a buffer layer 33;

[0070] The buffer layer 33 is disposed on the upper portion of the second area 22 in the fixed box 36 . The sludge sucked by the sludge suction pipe 5 contacts the filter layer 31 after passing through the buffer layer 33 .

[0071] By providing the buffer layer 33, the impurities and particulate matter in the sewage will have a deceleration and sedimentation process when passing through the buffer layer 33, so the speed when entering the filter layer 31 is slowed down, reducing the impact and wear of the impurities on the filter layer 31, thereby extending the service life of the filter layer 31. At the same time, since the impurities in the sewage are preliminarily removed when passing through the buffer layer 33, the number of impurities when entering the filter layer 31 is reduced, reducing the risk of filter blockage, helping to keep the filter layer 31 unobstructed, and improving the filtering effect.

[0072] The utility model reduces the impact and wear of impurities on the filter layer by adding a buffer layer, thereby extending the service life of the filter layer; at the same time, the risk of filter clogging is reduced.

[0073] According to an embodiment of the present utility model, a drainage switch 35 is further provided at the bottom of the fixed box body 36 , and the clean water in the fixed box body 36 can be controlled to enter the water tank 2 by turning on the drainage switch 35 .

[0074] A drainage switch 35 is provided at the bottom of the fixed box 36, and the drainage switch 35 is provided in the first area 21. When the drainage switch 35 is turned on, the clean water filtered by the filter layer 31 and the filter cloth layer 32 in the fixed box 36 can enter the water tank 2 for use by the high-pressure water pump 6. In this embodiment, the second area 22 is not limited to the space in the fixed box 36, and the area inside the entire water tank 2 for holding clean water is the first area 21, that is, the first area 21 is the other area outside the second area 22; the transverse section of the fixed box 36 is smaller than the transverse section of the water tank 2, thereby ensuring that the high-pressure water pump 6 can enter from the upper part of the water tank 2 and extract clean water from the bottom of the water tank 2.

[0075] The utility model has the advantages of simple structure, high flexibility, high space utilization and low operation difficulty.

[0076] According to an embodiment of the utility model, the silt removal device further includes: an engine 11; the engine 11 is connected to the sand suction pump 4 and the high-pressure water pump 6 respectively, and the engine 11 provides power for the sand suction pump 4 and the high-pressure water pump 6.

[0077] In this embodiment, the engine 11 uses a 15 horsepower diesel engine, which has the advantages of simple structure, strong power, low failure rate and low cost.

[0078] The sand suction pump and the high-pressure water pump of the utility model are connected to the same engine, thus saving the cost of using the machinery.

[0079] According to one embodiment of the utility model, the engine 11 drives the sand suction pump 4 and the high-pressure water pump 6 simultaneously through a belt;

[0080] The pulley on the output shaft of the engine 11 is connected to the pulleys of the sand suction pump 4 and the high-pressure water pump 6 through a belt; when the engine 11 is running, the pulley on the output shaft also rotates, and the pulleys of the sand suction pump 4 and the high-pressure water pump 6 are driven to rotate through the transmission effect of the belt; the pulleys of the sand suction pump 4 and the high-pressure water pump 6 are connected to their respective pump shafts, and as the pulleys rotate, the pump shafts also rotate, thereby driving the sand suction pump 4 and the high-pressure water pump 6 to work.

[0081] Alternatively, the engine 11 is connected to the sand suction pump 4 and the high-pressure water pump 6 respectively through a clutch; the clutch is operated to control the connection or disconnection of the belt with the sand suction pump 4 and the high-pressure water pump 6, thereby realizing the transmission of the sand suction pump 4 and the high-pressure water pump 6 respectively.

[0082] The pulley on the output shaft of the engine 11 is connected to the pulleys of the sand suction pump 4 and the high-pressure water pump 6 through a belt; when the engine 11 is running, the pulley on the output shaft also rotates, and the pulleys of the sand suction pump 4 and the high-pressure water pump 6 are driven to rotate through the transmission effect of the belt; the clutch is located between the engine 11 and the sand suction pump 4 and the high-pressure water pump 6, and when the clutch is engaged, the power of the engine 11 is transmitted to the pulleys of the sand suction pump 4 and the high-pressure water pump 6 through the clutch, thereby driving the sand suction pump 4 and the high-pressure water pump 6 to work; when it is necessary to disconnect the transmission of the sand suction pump 4 or the high-pressure water pump 6, the clutch can be disengaged by operating the clutch lever or the hydraulic system, thereby cutting off the power transmitted by the engine 11 to the pulleys of the sand suction pump 4 or the high-pressure water pump 6.

[0083] The utility model adopts one engine to drive the sand suction pump and the high-pressure water pump at the same time, so that the sand suction pump and the high-pressure water pump can operate at the same time or independently, thereby improving the operating efficiency.

[0084] Working principle of this utility model:

[0085] Move the dredging device to the area to be operated by the handle 9, and lock the universal wheel 81 by the locking mechanism to fix the position of the dredging device; fix the filter element 3 in the water tank 2, add clean water to the water tank 2, and cover the water tank cover tightly;

[0086] The high-pressure water jet pipe 7 is placed in the pipeline to be dredged, and the high-pressure water pump 6 is driven by the engine 11 to operate. The high-pressure water pump 6 draws clean water from the first area 21 of the water tank 2 and pressurizes it, and the silt in the pipeline is dredged through the high-pressure water jet pipe 7;

[0087] Insert the sludge suction pipe 5 into the power well chamber that needs to be desilted, and drive the sand suction pump 4 to operate through the engine 11. Under the suction force of the sand suction pump 4, the sewage and mud in the power well chamber pass through the sludge suction pipe 5 and the sand suction pump 4 and enter the second area 22 in the fixed box 36;

[0088] The sewage in the second area 22 is filtered and then enters the first area 21 for recycling.

[0089] When the dredging operation is finished, the filter element 3 in the water tank 2 is taken out and cleaned for next use.

[0090] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0091] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dredging device, characterized in that: include: A bottom plate, on which a water tank is fixedly arranged; The water tank is provided with a filter component, and the filter component divides the interior of the water tank into a first area and a second area, the first area is used to hold clean water, and the second area is used to hold sewage; the sewage in the second area is filtered by the filter component and becomes clean water and enters the first area; A sand suction pump, wherein both ends of the sand suction pump are connected to the second area and the sludge suction pipe respectively; the sand suction pump is used to provide suction for the sludge suction pipe and send the sludge sucked by the sludge suction pipe into the second area; A high-pressure water pump, wherein both ends of the high-pressure water pump are respectively connected to the first area and the high-pressure water jet pipe; the high-pressure water pump pressurizes the clean water in the first area and inputs it into the high-pressure water jet pipe to flush and dredge the pipeline.

2. The dredging device according to claim 1, characterized in that: The desilting device further comprises: a plurality of wheels, a handle, and a pull ring; The multiple wheels are respectively arranged at the four corners of the bottom plate, and the multiple wheels are used to move the bottom plate; The handle and the pull ring are respectively arranged at two opposite ends of the bottom plate, the handle is used to manually push and pull the bottom plate, and the pull ring is used to connect a trailer or to fix it.

3. The dredging device according to claim 2, characterized in that: The plurality of wheels include: A universal wheel disposed at the same end of the base plate as the handle, wherein the universal wheel is provided with a locking mechanism, and the direction of the universal wheel can be locked by adjusting the locking mechanism, and / or the universal wheel can be locked; A fixed wheel fixed in the direction of being arranged at the same end of the bottom plate as the pull ring.

4. The dredging device according to claim 1, characterized in that: The filter component comprises: a filter screen layer and a filter cloth layer; The filter layer is arranged on the second area side, and the filter layer is used to filter impurities and particulate matter in the sewage; The filter cloth layer is arranged on the first region side, and the filter cloth layer is used to absorb suspended matter and impurities in sewage.

5. The dredging device according to claim 4, characterized in that: A fixed slide is provided on the inner wall of the water tank; The filter component further comprises a fixing box for fixing the filter screen layer and the filter cloth layer, and a slide groove is arranged on the outer wall of the fixing box; The fixed box is slidably connected to the fixed slideway via the slide groove.

6. The dredging device according to claim 5, characterized in that: The filter component further includes: a buffer layer; The buffer layer is arranged on the upper part of the second area in the fixed box, and the sludge sucked by the sludge suction pipe contacts the filter layer after passing through the buffer layer.

7. The dredging device according to claim 6, characterized in that: A drainage switch is also provided at the bottom of the fixed box body, and the clean water in the fixed box body can be controlled to enter the water tank by turning on the drainage switch.

8. The dredging device according to claim 1, characterized in that: The silt removal device further includes: an engine; the engine is connected to the sand suction pump and the high-pressure water pump respectively, and the engine provides power for the sand suction pump and the high-pressure water pump.

9. The dredging device according to claim 8, characterized in that: The engine drives the sand suction pump and the high-pressure water pump simultaneously through a belt; Alternatively, the engine is connected to the sand suction pump and the high-pressure water pump respectively through a clutch; the clutch is operated to control the connection or disconnection of the belt with the sand suction pump and the high-pressure water pump, thereby realizing the transmission of the sand suction pump and the high-pressure water pump respectively.

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