Underwater dredging device for river regulation

Abstract

The utility model relates to the technical field of river channel desilting, solves the problem of low pollution discharge efficiency in an inland river cleaning process, and discloses an underwater desilting device for river channel treatment, which comprises a vehicle body, and a scattering mechanism, a conveying mechanism and a dewatering mechanism are arranged on the vehicle body; the scattering mechanism comprises a water spraying pipe and a pressure pump connected with the water spraying pipe, and the water spraying pipe sprays water downwards to scatter sludge into sewage; the conveying mechanism is arranged behind the water spraying pipe; the dewatering mechanism comprises a filter press and a water return pipe; and the water return pipe is connected with a water replenishing pipe. When the desilting vehicle body advances in a riverway where water is pumped out, the scattering mechanism scatters silt and forms thick sewage, the conveying mechanism conveys the sewage into the filter press, the filter press separates the sewage to form mud cakes and preliminarily filtered water, and the filtered water is pumped by the pressure pump through the water return pipe and then reused. And the water supplementing pipe connected with an external water supply source can supplement enough water pressure and water quantity, so that the sludge is dispersed, the transportation of sewage is changed into the transportation of mud cakes, and the dredging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of river channel dredging, and in particular to an underwater dredging device for river channel management. Background Art

[0002] Many towns have inland rivers, especially in coastal or southern areas. Urban rivers with good ecology can improve the quality of life of citizens and achieve harmony between man and nature. After long-term use, a lot of silt will accumulate at the bottom of the river. Excessive silt will not only cause environmental pollution, but also affect the normal functioning of various functions in the town, such as flood control, drainage, and water supply. Therefore, in order to ensure the normal function of the river, it is necessary to regularly carry out dredging projects on the river.

[0003] At present, in the process of river dredging, the water in the inland river is generally drained first, and then the silt condensed on the riverbed is manually dispersed using high-pressure water guns. Finally, the sewage is pumped out through a dredging pump and sent away by a transport vehicle or discharged to a designated location through a very long water pipe.

[0004] However, since a large amount of water is needed to disperse the silt, a large amount of sewage is generated. Directly discharging the sewage is a large and time-consuming project, and will also have a certain impact on the lives of residents in the town. Utility Model Content

[0005] In order to improve the defect of low sewage discharge efficiency during the inland river cleaning process, the present application provides an underwater dredging device for river management.

[0006] The present application provides an underwater dredging device for river management, which adopts the following technical solution:

[0007] An underwater silt removal device for river management, comprising a vehicle body, on which is provided:

[0008] The dispersing mechanism comprises a water spraying pipe and a pressure pump connected to the water spraying pipe, wherein the water spraying pipe sprays water downward to disperse the sludge into sewage;

[0009] A conveying mechanism is arranged behind the water spray pipe along the forward direction of the vehicle body, and is used to absorb sewage and convey it upward; and

[0010] The dehydration mechanism comprises a filter press and a return pipe, wherein the filter press has a water inlet and a water outlet, the conveying mechanism conveys sewage to the water inlet, the filter press is used to filter the sewage to obtain mud cake and filtered water, one end of the return pipe is connected to the water outlet, and the other end of the return pipe is connected to the booster pump, the return pipe is connected to a water supply pipe, and the water supply pipe is connected to a water source.

[0011] By adopting the above technical scheme, when the silt removal vehicle body moves in the drained river channel, the high-pressure water flowing out from the water spray pipe through the pressure pump will disperse the silt condensed on the river bottom and form relatively viscous sewage, and the conveying mechanism can convey the viscous sewage upward into the water inlet of the filter press; the filter press on the vehicle body directly separates the mud and water in the sewage into mud cakes and preliminarily filtered water, and the filtered water is then pumped out by the pressure pump through the return pipe and reused to disperse the silt. The amount of filtered water may be insufficient, so the return pipe is also connected to a water supply pipe connected to an external water supply source to ensure that there is enough water pressure and water volume to disperse the silt. The mud cake discharged from the filter press can be connected to a collecting bucket for temporarily collecting the mud cake, and then transported uniformly, turning the existing large amount of sewage transportation into only the transportation of the filtered mud cake, which can effectively reduce the number of transportations and reduce the cost of the silt removal project. A scattering mechanism, a conveying mechanism and a dewatering mechanism are arranged on a vehicle body to simultaneously perform silt flushing, silt extraction and filtering operations, effectively improving the silt removal efficiency.

[0012] Optionally, the breaking up mechanism further comprises a mud-breaking roller rotatably connected to the side wall of the vehicle body and a first driving assembly driving the mud-breaking roller to rotate, wherein the mud-breaking roller is arranged between the water spray pipe and the conveying mechanism, and the surface of the mud-breaking roller has rake teeth in a circumferential array, and when the mud-breaking roller rotates, the rake teeth can break up the mud.

[0013] By adopting the above technical solution, the high-pressure water sprayed from the water spray pipe can disperse the silt on the riverbed, and the silt can be further dispersed by the sludge roller with rake teeth, ensuring that the silt can be dispersed and transported to the filter press by the conveying mechanism, which can reduce the process of reciprocating dredging at the riverbed and improve the efficiency of the dredging project.

[0014] Optionally, the first driving assembly includes a first driving member fixed on the vehicle body, the first driving member has a driving shaft rotating with a horizontal axis, a driving gear is fixed on the driving shaft, a driven gear is fixed on the central axis of the mud roller, and a tooth chain is meshed between the driving gear and the driven gear.

[0015] By adopting the above technical solution, the first driving member drives the driving gear to rotate, and then drives the driven gear to rotate through the tooth chain, thereby driving the mud roller to rotate. Compared with directly using a motor to drive the central axis of the mud roller to rotate, by setting the number of teeth of the driving gear and the driven gear, the transmission efficiency can be correspondingly improved, thereby improving the effect of breaking up the sludge; and the transmission torque is reduced to avoid encountering harder sludge that makes it difficult for the motor to rotate and cause damage; in addition, the first driving member can be installed at a high place of the vehicle body away from the riverbed through the tooth chain, thereby reducing the situation where sludge and sewage enter the first driving member and cause damage to the first driving member.

[0016] Optionally, a protective cover for covering the first driving member and the toothed chain is connected to the vehicle body.

[0017] By adopting the above technical solution, the protective cover can further reduce the amount of silt that enters the first driving member and adheres to the toothed chain in large quantities.

[0018] Optionally, the conveying mechanism includes an auger, which includes an inclined conveying pipe and a spiral blade rotatably connected to the conveying pipe, and the inclined lower end and the inclined upper end of the conveying pipe are respectively provided with a mud inlet and a mud outlet, and the mud inlet passes through the bottom surface of the conveying pipe.

[0019] By adopting the above technical solution, the conveying mechanism is set as an auger, and the mud inlet of the auger directly passes through the bottom, so that the sewage can enter the spiral blades and be transported upward to the mud outlet, making the transportation more efficient.

[0020] Optionally, the conveying mechanism also includes a bucket rotatably connected to the side wall of the vehicle body and a second drive assembly for driving the bucket to rotate, the bucket is arranged between the breaking up mechanism and the auger, and the bucket can rotate to pour the sewage in the bucket into the mud inlet.

[0021] By adopting the above technical solution, the auger can automatically absorb and lift the sewage, and the cleaning efficiency can be further improved through the bucket, ensuring that the dispersed silt and sewage can enter the auger.

[0022] Optionally, the second driving assembly includes a second driving member installed on the side wall of the vehicle body and a guide frame; the rotation output end of the second driving member is fixedly connected to a driving rod, a connecting rod is hinged on the driving rod, and the connecting rod is hinged to the bucket at one end away from the driving rod; a guide groove is provided on the guide frame, and the guide groove includes a moving section arranged in a horizontal direction and a bucket section connected to the middle part of the moving section, the bucket section is arc-shaped, and the side wall of the bucket is provided with a first guide column and a second guide column sliding in the guide groove front and rear along the forward direction of the vehicle body, the first guide column can enter and exit the bucket section through the moving section, and the second guide column slides in the moving section.

[0023] By adopting the above technical solution, the two ends of the connecting rod are respectively hinged on the driving rod and the bucket, and the bucket is also restricted by the guide frame. When the second driving member drives the driving rod to rotate in the direction of the auger, the first guide column and the second guide column first move in the moving section, thereby causing the bucket to retreat, and then the first guide column will enter the bucket dumping section, and the bucket will rotate in the direction of the auger, thereby causing the sludge and sewage in the bucket to be poured into the mud inlet of the auger; then the second driving member will continue to drive the driving rod to rotate in the direction away from the auger, the first guide column will retreat in the bucket dumping section, and the bucket will also rotate to a horizontal state, and then the first guide column and the second guide column will move in the moving section in the direction away from the auger, that is, the bucket can shovel the sludge and sewage forward; then the above steps are repeated to achieve quick and clean shoveling of sludge.

[0024] Optionally, a crawler track for walking is provided at the bottom of the vehicle body.

[0025] By adopting the above technical solution, because there will be more gravel at the bottom of the river and the ground is uneven, compared with ordinary wheels, the tracks can make the vehicle move more stably, thereby ensuring the normal progress of the dredging process.

[0026] In summary, the present application includes at least one of the following beneficial effects:

[0027] 1. When the dredging vehicle is moving in the drained river channel, the high-pressure water flowing out of the water spray pipe through the pressure pump will disperse the silt condensed on the riverbed and form relatively viscous sewage. The conveying mechanism will transport the viscous sewage upward into the filter press. The filter press directly separates the mud and water in the sewage into mud cakes and preliminarily filtered water. The filtered water is then pumped out by the pressure pump through the return pipe and reused to disperse the silt. The water supply pipe connected to the external water supply source can replenish sufficient water pressure and water volume to disperse the silt. The mud cake discharged by the filter press can be connected to the collecting bucket for temporarily collecting the mud cake, and then transported uniformly, turning the existing large amount of sewage transportation into only transporting the filtered mud cake, which can effectively reduce the number of transportations, reduce the cost of dredging projects, and improve the dredging efficiency;

[0028] 2. The silt is further broken up by the sludge roller, and the bucket shovels the broken up silt and sewage into the dragon, further improving the dredging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of an underwater dredging device for river management in an embodiment of the present application;

[0030] Figure 2 It is a schematic diagram of the structure of the loose mud roller and the first drive assembly in the embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the structure of the bucket and the second drive assembly in an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the structure of the bucket in the sludge dumping state in the embodiment of the present application.

[0033] Description of reference numerals: 1, vehicle body; 11, crawler track; 12, cockpit; 2, scattering mechanism; 21, water spray pipe; 22, pressure pump; 23, mud scattering roller; 231, rake teeth; 24, first driving assembly; 241, first driving member; 242, driving gear; 243, driven gear; 244, toothed chain; 25, protective cover; 3, conveying mechanism; 31, auger; 311, conveying pipe; 312, spiral blade; 313, mud inlet; 314 , mud outlet; 32, bucket; 321, first guide column; 322, second guide column; 33, second drive assembly; 331, second drive member; 332, drive rod; 333, connecting rod; 334, guide frame; 3341, limit block; 335, guide groove; 3351, moving section; 3352, bucket section; 4, dewatering mechanism; 41, filter press; 411, water inlet; 412, water outlet; 42, return pipe; 43, water supply pipe. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] Reference Figure 1 The embodiment of the present application discloses an underwater silt clearing device for river management, including a vehicle body 1, on which a breaking up mechanism 2, a conveying mechanism 3 and a dehydrating mechanism 4 are arranged; the breaking up mechanism 2 includes a water spraying pipe 21 and a pressure pump 22 connected to the water spraying pipe 21, and the water spraying pipe 21 sprays water downward to break up the silt into sewage; the conveying mechanism 3 is arranged behind the water spraying pipe 21 along the forward direction of the vehicle body 1; the dehydrating mechanism 4 includes a filter press 41 and a return pipe 42, and the return pipe 42 is connected to a water supply pipe 43. When the dredging vehicle 1 moves in the drained river channel, the breaking-up mechanism 2 breaks up the silt and forms relatively viscous sewage, and the conveying mechanism 3 sends the sewage into the filter press 41, which separates the sewage into mud cakes and preliminarily filtered water. The filtered water is then extracted by the pressure pump 22 through the return pipe 42 for reuse, and the water supply pipe 43 connected to the external water supply source can supplement sufficient water pressure and water volume, thereby breaking up the silt and turning the transported sewage into transported mud cakes, thereby improving the dredging efficiency.

[0036] Reference Figure 1 The vehicle body 1 has a cockpit 12. Since there are many gravels at the bottom of the river channel and the ground is uneven, in order to make the vehicle body 1 move more stably to ensure the normal progress of the dredging process, a crawler track 11 for walking is set at the bottom of the vehicle body 1.

[0037] Reference Figure 1 and Figure 2The dispersing mechanism 2 includes a water spray pipe 21 and a pressure pump 22 connected to the water spray pipe 21. The pressure pump 22 is fixed on the vehicle body 1. The water spray pipe 21 extends out of the vehicle body 1 along the forward direction of the vehicle body 1 and is located on one side of the vehicle body 1. A reinforcement frame is also connected to the vehicle body 1 to support the water spray pipe 21. The outlet of the water spray pipe 21 is tilted downward. The high-pressure water flowing out of the water spray pipe 21 through the pressure pump 22 will disperse the silt condensed on the river bottom and form relatively viscous sewage.

[0038] The high pressure water sprayed by the water spray pipe 21 can already disperse the silt on the river bottom. In order to disperse the silt more fully, refer to Figure 2 The dispersing mechanism 2 also includes a mud roller 23 connected to the vehicle body 1 and a first driving assembly 24 for driving the mud roller 23 to rotate. Specifically, a protective cover 25 is fixedly installed on the side wall of the vehicle body 1 between the water spray pipe 21 and the conveying mechanism 3. The protective cover 25 is only provided with an opening at the lower end. The mud roller 23 is rotatably connected to a position near the opening in the protective cover 25 through a rotating shaft. The lower half of the mud roller 23 extends out of the protective cover 25. The surface of the mud roller 23 has rake teeth 231 arranged along the circumferential direction. The rake teeth 231 are arranged in multiple circles along the length direction. When the mud roller 23 rotates, the rake teeth 231 can disperse the silt, ensuring that the silt can be dispersed and transported to the filter press 41 by the conveying mechanism 3, which can reduce the process of reciprocating silt removal at the river bottom and improve the efficiency of the silt removal project. Preferably, mud rollers 23 and the first driving assembly 24 can be provided on both sides of the vehicle body 1 to disperse the silt faster.

[0039] In other embodiments, the first driving assembly 24 may include only one motor, and the output shaft of the motor is fixed on the central axis of the mud roller 23 .

[0040] In this embodiment, the first driving assembly 24 includes a first driving member 241 fixed on the vehicle body 1, the first driving member 241 has a driving shaft rotating with the horizontal direction as the axis, the first driving member 241 is preferably a motor and is installed at a high place of the vehicle body 1 away from the river bottom, thereby reducing the occurrence of sludge and sewage entering the first driving member 241 and causing the first driving member 241 to be damaged, a driving gear 242 is fixed on the driving shaft, a driven gear 243 is fixed on the central axis of the mud roller 23, and a tooth chain 244 is meshed between the driving gear 242 and the driven gear 243. The first driving member 241 drives the driving gear 242 to rotate, and then drives the driven gear 243 to rotate through the tooth chain 244, thereby driving the mud roller 23 to rotate. Compared with directly using a motor to drive the central axis of the mud roller 23 to rotate, the transmission efficiency can be correspondingly improved, thereby improving the effect of breaking up the sludge; and the transmission torque is reduced to avoid encountering a harder sludge that makes it difficult for the motor to rotate and cause damage.

[0041] Reference Figure 1The conveying mechanism 3 includes an auger 31, which includes an inclined conveying pipe 311 and a spiral blade 312 rotatably connected to the conveying pipe 311. A driving source for driving the spiral blade 312 to rotate is provided at the top of the auger 31. A mud inlet 313 and a mud outlet 314 are respectively provided at the inclined lower end and the inclined upper end of the conveying pipe 311. The mud inlet 313 is provided on the upward side of the conveying pipe 311 and passes through the bottom surface of the conveying pipe 311, so that silt and sewage can enter the spiral blade 312 easily without falling out of the conveying pipe 311. The spiral blade 312 continuously conveys the sewage upward to the mud outlet 314, and the conveying is more efficient.

[0042] Auger 31 can automatically absorb and lift sewage. In order to further improve the cleaning efficiency, refer to Figure 1 The conveying mechanism 3 also includes a bucket 32 ​​rotatably connected to the side wall of the vehicle body 1 and a second driving assembly 33 for driving the bucket 32 ​​to rotate. The bucket 32 ​​is arranged between the breaking up mechanism 2 and the auger 31. The bucket 32 ​​has a shoveling cavity that passes through the front and the top. The bucket 32 ​​can rotate to pour the sewage in the bucket 32 ​​into the mud inlet 313.

[0043] In this embodiment, refer to Figure 3 and Figure 4The second driving assembly 33 includes a second driving member 331 and a guide frame 334 installed on the side wall of the vehicle body 1; the second driving member 331 is also preferably a motor, and the rotation output end of the second driving member 331 is fixedly connected to a driving rod 332, and the end of the driving rod 332 away from the second driving member 331 is hinged to a connecting rod 333, and the end of the connecting rod 333 away from the driving rod 332 is hinged to the side wall of the bucket 32 ​​away from the vehicle body 1; the guide frame 334 is provided with a guide groove 335, and the guide groove 335 includes a guide groove 335 along the horizontal direction. The movable section 3351 is arranged forwardly and the dump section 3352 is connected to the middle part of the movable section 3351. The dump section 3352 is arc-shaped, and the curvature of the arc is preferably between 90-120°. The bucket 32 ​​is arranged with a first guide column 321 and a second guide column 322 sliding in the guide groove 335 along the front and rear of the side wall of the vehicle body 1 in the forward direction of the vehicle body 1. The first guide column 321 can enter and exit the dump section 3352 through the movable section 3351, and the second guide column 322 slides in the movable section 3351. The two ends of the connecting rod 333 are respectively hinged on the driving rod 332 and the bucket 32. The bucket 32 ​​is also restricted by the guide frame 334. When the second driving member 331 drives the driving rod 332 to rotate in the direction of the auger 31, the first guide column 321 and the second guide column 322 first move in the moving section 3351, thereby causing the bucket 32 ​​to retreat. Then the first guide column 321 will enter the bucket-returning section 3352, and the bucket 32 ​​will rotate in the direction of the auger 31, so that the sludge and sewage in the bucket 32 ​​are poured into the mud inlet 313 of the auger 31. The guide frame 334 is provided with a protruding The limit block 3341 is used to prevent the bucket 32 ​​from continuing to rotate toward the direction of the auger 31 until the opening of the shoveling chamber is facing away from the vehicle body 1; then the second driving member 331 will continue to drive the driving rod 332 to rotate in the direction away from the auger 31, and the first guide column 321 will retreat in the bucket section 3352, and the bucket 32 ​​will also rotate to a horizontal state, and then the first guide column 321 and the second guide column 322 will move in the moving section 3351 in the direction away from the auger 31, that is, the bucket 32 ​​can shovel silt and sewage forward; then repeat the above steps to achieve quick and clean shoveling of silt.

[0044] Reference Figure 1The filter press 41 has a water inlet 411 and a water outlet 412. The mud outlet 314 of the auger 31 is inclined and connected to the water inlet 411. The conveying mechanism 3 conveys the sewage to the water inlet 411. The filter press 41 can use the existing filter press equipment. The water outlet 412 of the filter press 41 is connected to the return pipe 42, and the other end of the return pipe 42 is connected to the booster pump 22. The filtered water is then drawn by the booster pump 22 through the return pipe 42 and reused to disperse the sludge. The amount of filtered water may be insufficient, so the return pipe 42 is also connected to a water supply pipe 43 connected to an external water supply source to ensure that there is enough water pressure and water to disperse the sludge. The mud cake discharged from the filter press 41 can be connected to a collecting bucket for temporarily collecting the mud cake, and then transported uniformly, which changes the existing large amount of sewage transportation into only the transportation of the filtered mud cake, which can effectively reduce the number of transportations and reduce the cost of the dredging project.

[0045] A breaking mechanism 2, a conveying mechanism 3 and a dewatering mechanism 4 are arranged on a vehicle body 1 to simultaneously perform silt flushing, silt extraction and filtering operations, thereby effectively improving the silt removal efficiency.

[0046] The implementation principle of an underwater dredging device for river management in the embodiment of the present application is as follows:

[0047] When the dredging vehicle body 1 is traveling in the drained river channel, the high-pressure water flowing out of the water spray pipe 21 through the pressure pump 22 will disperse the silt condensed on the riverbed and form relatively viscous sewage, the mud roller 23 will further disperse the silt, the auger 31 will transport the sewage upward into the water inlet 411 of the filter press 41, and the bucket 32 ​​can also shovel the silt and sewage into the dragon to improve the dredging efficiency; the filter press 41 on the vehicle body 1 directly separates the sewage into mud cakes and preliminarily filtered water, and the filtered water is then extracted by the pressure pump 22 through the return pipe 42 and reused to disperse the silt. The amount of filtered water may be insufficient, so the return pipe 42 is also connected to a water supply pipe 43 connected to an external water supply source to ensure that there is enough water pressure and water to disperse the silt, the mud cake discharged from the filter press 41 is connected to a collecting bucket for collecting mud cakes, and then transported uniformly, effectively reducing the number of transportation times, reducing the cost of dredging projects, and improving dredging efficiency.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An underwater dredging device for river management, comprising a vehicle body (1), characterized in that: The vehicle body (1) is provided with: The dispersing mechanism (2) comprises a water spray pipe (21) and a pressure pump (22) connected to the water spray pipe (21), wherein the water spray pipe (21) sprays water downward to disperse the sludge into sewage; A conveying mechanism (3) is arranged behind the water spray pipe (21) along the forward direction of the vehicle body (1), and the conveying mechanism (3) is used to absorb sewage and convey it upward; and The dewatering mechanism (4) comprises a filter press (41) and a return pipe (42), wherein the filter press (41) has a water inlet (411) and a water outlet (412), the conveying mechanism (3) conveys sewage into the water inlet (411), the filter press (41) is used to filter the sewage to obtain mud cake and filtered water, one end of the return pipe (42) is connected to the water outlet (412), and the other end of the return pipe (42) is connected to the pressure pump (22), and the return pipe (42) is connected to a water supply pipe (43), and the water supply pipe (43) is connected to a water source.

2. The underwater dredging device for river management according to claim 1, characterized in that: The sludge-scattering mechanism (2) further comprises a sludge-scattering roller (23) rotatably connected to the side wall of the vehicle body (1) and a first driving assembly (24) for driving the sludge-scattering roller (23) to rotate. The sludge-scattering roller (23) is arranged between the water spray pipe (21) and the conveying mechanism (3). The surface of the sludge-scattering roller (23) has rake teeth (231) arranged in a circumferential array. When the sludge-scattering roller (23) rotates, the rake teeth (231) can sludge.

3. The underwater dredging device for river management according to claim 2 is characterized in that: The first driving assembly (24) comprises a first driving member (241) fixed on the vehicle body (1), the first driving member (241) having a driving shaft rotating about a horizontal direction, a driving gear (242) being fixed on the driving shaft, a driven gear (243) being fixed on the central axis of the mud loosening roller (23), and a toothed chain (244) being meshed between the driving gear (242) and the driven gear (243).

4. The underwater dredging device for river management according to claim 3, characterized in that: The vehicle body (1) is connected to a protective cover (25) for covering the first driving member (241) and the toothed chain (244).

5. The underwater dredging device for river management according to claim 1, characterized in that: The conveying mechanism (3) comprises an auger (31), the auger (31) comprising an inclined conveying pipe (311) and a spiral blade (312) rotatably connected to the conveying pipe (311), the inclined lower end and the inclined upper end of the conveying pipe (311) respectively being provided with a mud inlet (313) and a mud outlet (314), the mud inlet (313) passing through the bottom surface of the conveying pipe (311).

6. The underwater dredging device for river management according to claim 5, characterized in that: The conveying mechanism (3) further comprises a bucket (32) rotatably connected to the side wall of the vehicle body (1) and a second driving assembly (33) for driving the bucket (32) to rotate. The bucket (32) is arranged between the breaking up mechanism (2) and the auger (31). The bucket (32) can rotate to pour the sewage in the bucket (32) into the mud inlet (313).

7. The underwater silt removal device for river management according to claim 6, characterized in that: The second driving assembly (33) comprises a second driving member (331) mounted on a side wall of the vehicle body (1) and a guide frame (334); a driving rod (332) is fixedly connected to the rotation output end of the second driving member (331); a connecting rod (333) is hingedly connected to the driving rod (332); an end of the connecting rod (333) away from the driving rod (332) is hingedly connected to the bucket (32); a guide groove (335) is formed on the guide frame (334); the guide groove (335) comprises a moving section (332) arranged in a horizontal direction The movable section (3351) and the bucket section (3352) are connected to the middle part of the movable section (3351), the bucket section (3352) is arc-shaped, and the side walls of the bucket (32) are provided with a first guide column (321) and a second guide column (322) sliding in the guide groove (335) in front and back along the forward direction of the vehicle body (1), the first guide column (321) can enter and leave the bucket section (3352) through the movable section (3351), and the second guide column (322) slides in the movable section (3351).

8. The underwater dredging device for river management according to claim 1, characterized in that: The bottom of the vehicle body (1) is provided with a crawler track (11) for walking.

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