Repair equipment for surface pollutants of river and lake bottom mud

Abstract

The invention discloses equipment for repairing surface pollutants of river and lake bottom mud, which comprises a floating body and a box body, the top end of the floating body is provided with a precipitation water tank, the floating body is connected with a lifting sleeve through a lifting device, a suction pipe is fixed in the lifting sleeve, the precipitation water tank is provided with a connecting hose, and the connecting hose is communicated with the suction pipe. A connecting pipe is arranged at the top end of the box body and slidably connected with the lifting sleeve, a disturbance assembly is arranged in the box body, a sludge pump is arranged on the side wall, close to the bottom end, of the precipitation water tank, and a clear water pipeline is arranged on the upper portion of the side wall of the precipitation water tank; a hydraulic cylinder is arranged at the top end of the floating body, a lifting mounting frame is arranged at the output end of the hydraulic cylinder, a sundry cleaning assembly is arranged on the side wall of the lifting mounting frame, and a hook cleaning assembly is further arranged on the inner side wall of the lifting mounting frame. And the method has relatively high social use value and application prospect.

Description

Technical Field

[0001] The invention relates to the technical field of river and lake bottom mud restoration, and in particular to a device for restoring pollutants on the surface of river and lake bottom mud. Background Art

[0002] Bottom mud is formed by long-term physical, chemical, biological and water transport and deposition at the bottom of the water body. Bottom mud mainly comes from soil erosion, decomposition of plant and animal bodies, and particulate matter contained in sewage discharged into rivers and lakes. Suspended particles in the water body enclose pollutants in the water body, and through sedimentation and other effects, form bottom mud layers with different environmental (or pollution) properties at the bottom of rivers and lakes in chronological order.

[0003] At present, the main sediment treatment technologies at home and abroad are: physical treatment: dredging (dredging) technology, masking technology; chemical treatment: oxidation-reduction technology, stabilization and solidification technology; biological restoration: plant-microorganism restoration technology. In the process of dredging, pollutants on the surface of river and lake sediments need to be extracted, but since river and lake sediments contain pollutants such as weeds and plastic garbage, it is easy to clog the silt extraction pipe. In order to solve the above problem, a repair device for pollutants on the surface of river and lake sediments is now provided, which can collect weeds, plastic garbage, etc. on the surface of the sediment in advance to avoid clogging of the suction pipe. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides a device for repairing pollutants on the surface of river and lake sediments.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for repairing pollutants on the surface of river and lake sediments, comprising a float and a box, wherein a sedimentation water tank is provided at the top of the float, a lifting sleeve is connected to the float via a lifting device, a suction pipe is fixed in the lifting sleeve, a connecting hose is provided on the sedimentation water tank, the connecting hose is connected to the suction pipe, a connecting pipe is provided at the top of the box, the connecting pipe is slidably connected to the lifting sleeve, a disturbance component is provided in the box, a sludge pump is provided near the bottom of the side wall of the sedimentation water tank, and a clean water pipe is provided at the upper part of the side wall of the sedimentation water tank;

[0007] A hydraulic cylinder is arranged on the top of the floating body, a lifting mounting frame is arranged on the output end of the hydraulic cylinder, a debris cleaning component is arranged on the side wall of the lifting mounting frame, and a curved hook cleaning component is also arranged on the inner side wall of the lifting mounting frame.

[0008] Preferably, the disturbance assembly includes a slide rail fixed to the top of the inner wall of the box body, a gear rail is provided on the side wall of the slide rail, a slider is slidably connected to the slide rail, a rotating shaft is rotatably connected to the slider, a gear is provided on the top of the rotating shaft, the gear is meshed with the slide rail, and a disturbance wheel is provided at the bottom of the rotating shaft.

[0009] Preferably, the inner wall of the box body is rotatably connected to a threaded rod, and the threaded rod is threadedly connected to the slider.

[0010] Preferably, the crushing assembly comprises a sliding sleeve fixedly connected to the bottom end of the floating body, the inner wall of the sliding sleeve is slidably connected to a sliding column, the inner wall of the sliding column is rotatably connected to a crushing shaft near the bottom end, and the crushing shaft is provided with a crushing knife.

[0011] Preferably, a conveying mechanism is provided on the inner side wall of the lifting mounting frame, the conveying mechanism is provided with a conveying shaft, a driven gear is provided on the side end of the conveying shaft, a driving assembly is provided on the side wall of the lifting mounting frame, and cleaning hooks are equidistantly provided on the surface of the conveying mechanism.

[0012] Preferably, the inner side wall of the lifting mounting frame is connected to a moving cross bar through a reciprocating drive assembly, cleaning blades are equidistantly arranged on the moving cross bar, and a guide plate is arranged on the inner side wall of the lifting mounting frame below the moving cross bar.

[0013] Preferably, the reciprocating drive assembly includes a moving frame slidably connected to the inner side wall of the lifting mounting frame, a sliding frame is slidably connected in the moving frame, a second gear is provided on the inner side wall of the sliding frame, a second gear is rotatably connected to the inner side wall of the lifting mounting frame, the second gear is meshed with the second gear, a limit block is provided on the inner side wall of the lifting mounting frame, a connecting rod is provided at the top end of the sliding frame, a limit protrusion is provided on the side wall of the connecting rod, and the limit protrusion abuts against the side wall of the limit block.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Cleaning hooks are equidistantly arranged on the surface of the conveying mechanism, which are used to clean weeds or plastic garbage in the bottom mud after crushing. The rollers are alternately connected with the arc guide groove and the U-shaped driving groove, which can drive the third rotating shaft to rotate intermittently. The driving gear and the driven gear are meshed and connected, which can drive the conveying mechanism to intermittently convey weeds, plastic garbage and other pollutants, and can collect weeds, plastic garbage, etc. in advance to avoid clogging of the suction pipe;

[0016] 2. When the cleaning hook is transferred to the bottom of the moving crossbar, it stops. The third motor drives the second gear to mesh with the second rack rail to drive the cleaning blade to move downward. The cleaning blade abuts against the side wall of the cleaning hook. The rear moving frame moves to the right under the meshing connection of the second gear and the second rack rail, and the pollutants attached to the cleaning hook are removed. The pollutants fall into the debris collection tank for subsequent treatment, thereby completing the collection of pollutants such as weeds and plastic garbage on the surface of the bottom mud;

[0017] 3. The depth of the box can be adjusted by the lifting device, the depth of the conveying mechanism can be adjusted by the hydraulic cylinder, and a connecting rod is provided on the side wall of the sliding column. The connecting rod is fixedly connected to the side wall of the conveying mechanism, so that the crushing knife and the conveying mechanism can be raised and lowered synchronously to adjust the crushing depth of the crushing knife. Through such an arrangement, the equipment can be suitable for river and lake water bodies of various depths.

[0018] 4. During the movement of the slider, the meshing connection between the gear and the slide rail can drive the shaft to rotate, thereby driving the disturbance wheel to rotate, breaking the solid-liquid phase equilibrium at the water sediment interface, so as to better extract the pollutants.

[0019] In summary, the present invention overcomes the shortcomings of the prior art, has a reasonable design, can collect weeds, plastic garbage, etc. on the surface of the bottom mud in advance, avoids clogging of the suction pipe, and has high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the structure of the disturbance component of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified view of the structure at center;

[0025] Figure 5 It is a schematic diagram of the structure of the crushing assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the conveying mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the hook cleaning assembly of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the reciprocating drive assembly of the present invention.

[0030] In the figure: floating body 1, sedimentation tank 2, lifting sleeve 21, box 22, connecting pipe 221, spring 222, lifting device 213, suction pipe 211, connecting hose 212, sludge pump 214, clean water pipeline 215, disturbance component 223, crushing component 3, lifting frame 4, hook cleaning component 5, slide rail 2231, gear rail 2232, slider 2233, threaded rod 2234, rotating shaft 2235, gear 2236, disturbance wheel 2237, waterproof motor 2238, sliding sleeve 31, sliding column 32, crushing shaft 33, crushing knife 331, telescopic rod 34, bevel gear pair 35, crushing motor 36, connecting Rod 30, lifting mounting frame 4, hydraulic cylinder 401, conveying mechanism 42, conveying shaft 421, driven gear 4211, cleaning hook 422, driving assembly 43, connecting frame 431, worm 432, second rotating shaft 433, worm wheel 434, rotating disk 435, third rotating shaft 436, intermittent disk 437, driving gear 438, moving cross bar 51, cleaning blade 511, reciprocating driving assembly 52, moving frame 521, sliding frame 522, second rack 523, second gear 524, connecting rod 525, limiting protrusion 5251, limiting block 526, guide plate 53, knife groove 531, debris collecting groove 54. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] Reference Figure 1A device for repairing pollutants on the surface of river and lake sediments comprises a floating body 1 and a box 22. A sedimentation tank 2 is provided at the top of the floating body 1. A lifting sleeve 21 is connected to the floating body 1 through a lifting device 213. The lifting device 213 can drive the lifting sleeve 21 to move up and down on the floating body 1. A suction pipe 211 is fixed in the lifting sleeve 21. A connecting hose 212 is provided on the sedimentation tank 2. The connecting hose 212 is connected to the suction pipe 211. A suction pump is provided on the connecting hose 212. A connecting pipe 212 is provided at the top of the box 22. 21, a connecting pipe 221 is slidably connected with the lifting sleeve 21, a spring 222 is sleeved on the connecting pipe 221, the top of the spring 222 is fixedly connected with the lifting sleeve 21, and the bottom of the spring 222 is fixedly connected with the connecting pipe 221. The spring 222 can buffer the box 22 to prevent the box 22 from being damaged by hard objects. A disturbance component 223 is provided in the box 22, a sludge pump 214 is provided near the bottom of the side wall of the sedimentation tank, and a clean water pipe 215 is provided on the upper part of the side wall of the sedimentation tank;

[0034] A hydraulic cylinder 401 is provided at the top of the floating body 1 , a lifting mounting frame 4 is provided at the output end of the hydraulic cylinder 401 , a debris cleaning component is provided on the side wall of the lifting mounting frame 4 , and a hook cleaning component 5 is also provided on the inner side wall of the lifting mounting frame 4 .

[0035] The overlying water area is disturbed by the disturbance component 223 to form overlying water turbulence, breaking the solid-liquid phase equilibrium at the water-sediment interface, so that the organic pollutants with small specific gravity in the bottom mud enter the water phase and are transferred for treatment, and the particles with large specific gravity settle and cover the bottom mud surface in situ, and the pollutants are sucked into the sedimentation tank 2 through the suction pipe 211 for sedimentation and separation, and flocculant is added into the sedimentation tank 2. The sludge precipitated in the sedimentation tank 2 is sucked out for treatment through the sludge pump 214 arranged at the bottom of the sedimentation tank 2, and the clean water pipe 215 returns the upper clear water in the sedimentation tank 2 to the water body.

[0036] Example 2

[0037] Reference Figure 1-9 The difference between this embodiment and embodiment 1 is that the disturbance component 223 includes a slide rail 2231 fixed on the top of the inner wall of the box body 22, a gear rail 2232 is provided on the side wall of the slide rail 2231, a slider 2233 is slidably connected to the slide rail 2231, the inner wall of the box body 22 is rotatably connected to a threaded rod 2234, the threads at both ends of the threaded rod 2234 are rotated in opposite directions, the threaded rod 2234 is threadedly connected to the slider 2233, a rotating shaft 2235 is rotatably connected to the slider 2233, a gear 2236 is provided on the top of the rotating shaft 2235, the gear 2236 is meshed with the slide rail 2231, a disturbance wheel 2237 is provided at the bottom of the rotating shaft 2235, a waterproof motor 2238 is provided on the side wall of the box body 22, and the output end of the waterproof motor 2238 is meshed with the threaded rod 2234.

[0038] Start the waterproof motor 2238, and drive the slider 2233 to move back and forth through the threaded connection between the threaded rod 2234 and the slider 2233. During the movement of the slider 2233, the gear 2236 is meshed with the slide rail 2231 to drive the rotating shaft 2235 to rotate, thereby driving the disturbance wheel 2237 to rotate, breaking the solid-liquid phase equilibrium at the water sediment interface for better extraction of pollutants.

[0039] Example 3

[0040] Reference Figure 1-9 The difference between this embodiment and embodiment 2 is that the crushing assembly 3 includes a sliding sleeve 31 fixedly connected to the bottom end of the floating body 1, the inner wall of the sliding sleeve 31 is slidably connected to a sliding column 32, the inner wall of the sliding column 32 is rotatably connected to a crushing shaft 33 near the bottom end, and a crushing knife 331 is provided on the crushing shaft 33. A telescopic rod 34 is rotatably provided on the floating body 1, and the bottom end of the telescopic rod 34 is transmission-connected to the crushing shaft 33 through a bevel gear pair 35. A crushing motor 36 is provided at the top of the floating body 1, and the output end of the crushing motor 36 is fixedly connected to the telescopic rod 34.

[0041] Start the crushing motor 36 to drive the telescopic rod 34 to rotate, and drive the crushing shaft 33 to rotate through the bevel gear pair 35, thereby driving the crushing knife 331 to crush the block pollutants on the surface of the river and lake bottom mud. The crushed block sludge can be extracted by the suction pipe 211, avoiding the block pollutants on the surface of the river and lake bottom mud from being unable to be extracted or clogging the suction pipe 211.

[0042] Example 4

[0043] Reference Figure 1-9 The difference between this embodiment and embodiment 3 is that a conveying mechanism 42 is provided on the inner wall of the lifting mounting frame 4, the conveying mechanism 42 is provided with a conveying shaft 421, a driven gear 4211 is provided at the side end of the conveying shaft 421, a driving assembly 43 is provided on the side wall of the lifting mounting frame 4, and cleaning hooks 422 are equidistantly provided on the surface of the conveying mechanism 42 for cleaning weeds or plastic waste in the bottom mud after crushing.

[0044] The driving assembly 43 includes a connecting frame 431 fixedly connected to the outer wall of the lifting mounting frame 4, a worm 432 is horizontally rotatably connected to the connecting frame 431, a second rotating shaft 433 is vertically rotatably connected to the connecting frame 431, a worm wheel 434 is provided on the second rotating shaft 433, the worm wheel 434 is meshingly connected to the worm 432, a rotating disk 435 is provided on the second rotating shaft 433, a roller is eccentrically provided on the top of the rotating disk 435, a third rotating shaft 436 is rotatably connected to the top of the connecting frame 431, an intermittent disk 437 is provided on the third rotating shaft 436, an arc guide groove and a U-shaped driving groove are intermittently provided on the intermittent disk 437, the U-shaped driving groove and the roller are slidably connected, a driving gear 438 is provided on the top of the third rotating shaft 436, the driving gear 438 is meshingly connected to the driven gear 4211, a second motor 439 is provided on the outer wall of the connecting frame 431, and an output end of the second motor 439 is fixedly connected to the worm 432.

[0045] Starting the second motor 439 drives the worm 432 to rotate, and the second rotating shaft 433 is driven to rotate through the meshing connection between the worm wheel 434 and the worm 432. The third rotating shaft 436 can be driven to rotate intermittently through the alternating rolling connection between the roller and the arc guide groove and the U-shaped driving groove. The driving gear 438 is meshed with the driven gear 4211 to drive the conveying mechanism 42 to intermittently convey pollutants such as weeds and plastic waste.

[0046] Example 5

[0047] Reference Figure 1-9 The difference between this embodiment and the embodiment 4 is that the inner side wall of the lifting mounting frame 4 is connected to a moving cross bar 51 through a reciprocating drive assembly 52, and cleaning blades 511 are equidistantly arranged on the moving cross bar 51, and the cleaning blades 511 correspond to the cleaning hooks 422. The inner side wall of the lifting mounting frame 4 is provided with a guide plate 53 below the moving cross bar 51, and the guide plate 53 is provided with a knife groove 531 equidistantly arranged, and the cleaning hook 422 can pass through the knife groove 531;

[0048] The reciprocating drive assembly 52 includes a moving frame 521 slidably connected to the inner wall of the lifting mounting frame 4, a sliding frame 522 is slidably connected in the moving frame 521, a second rack 523 is provided on the inner wall of the sliding frame 522, a second gear 524 is rotatably connected to the inner wall of the lifting mounting frame 4, the second gear 524 is meshed with the second rack 523, a third motor 527 is provided on the outer wall of the lifting mounting frame 4, an output end of the third motor 527 is fixedly connected to the gear shaft of the second gear 524, a limit block 526 is provided on the inner wall of the lifting mounting frame 4, a connecting rod 525 is provided at the top end of the sliding frame 522, a limit protrusion 5251 is provided on the side wall of the connecting rod 525, and the limit protrusion 5251 abuts against the side wall of the limit block 526.

[0049] By meshing the driving gear 438 with the driven gear 4211, the conveying mechanism 42 can be driven to intermittently convey weeds, plastic waste and other pollutants. The cleaning hook 422 stops when it is transmitted to the bottom of the moving cross bar 51, and the third motor 527 drives the second gear 524 to mesh with the second rack 523 to drive the cleaning blade 511 to move downward. The cleaning blade 511 abuts against the side wall of the cleaning hook 422. The rear moving frame 521 moves to the right under the meshing connection between the second gear 524 and the second rack 523, and the pollutants attached to the cleaning hook 422 are pushed off. The pollutants fall into the debris collection groove 54 for subsequent processing, thereby completing the collection of weeds, plastic waste and other pollutants on the surface of the bottom mud, and preventing these pollutants from clogging the suction pipe 211.

[0050] A connecting rod 30 is provided on the side wall of the sliding column 32, and the connecting rod 30 is fixedly connected to the side wall of the conveying mechanism 42;

[0051] The depth of the box 22 can be adjusted by the lifting device 213, the depth of the conveying mechanism 42 can be adjusted by the hydraulic cylinder 401, and a connecting rod 30 is provided on the side wall of the sliding column 32. The connecting rod 30 is fixedly connected to the side wall of the conveying mechanism 42, so that the crushing knife 331 and the conveying mechanism 42 can be lifted and lowered synchronously to adjust the crushing depth of the crushing knife 331. Through such an arrangement, the equipment can be suitable for river and lake water bodies of various depths.

[0052] Working principle: In the present invention, the disturbance component 223 is used to disturb the overlying water area to form overlying water turbulence, breaking the solid-liquid phase equilibrium of the water-sediment interface, so that the organic pollutants with small specific gravity in the bottom mud enter the water phase and are transferred for treatment, and the particles with large specific gravity settle and cover the bottom mud surface in situ, and the pollutants are sucked into the sedimentation tank 2 through the suction pipe 211 for sedimentation and separation, and flocculants are added into the sedimentation tank 2. The sludge precipitated in the sedimentation tank 2 is sucked out for treatment through the sludge pump 214 arranged at the bottom of the sedimentation tank 2, and the clean water pipe 215 returns the upper clear water in the sedimentation tank 2 to the water body;

[0053] The crushing motor 36 is started to drive the telescopic rod 34 to rotate, and the crushing shaft 33 is driven to rotate through the bevel gear pair 35, thereby driving the crushing knife 331 to crush the blocky pollutants on the surface of the river and lake bottom mud;

[0054] The second motor 439 is started to drive the worm 432 to rotate, and the roller is alternately connected with the arc guide groove and the U-shaped driving groove to drive the third rotating shaft 436 to rotate intermittently, and the driving gear 438 is meshed with the driven gear 4211 to drive the conveying mechanism 42 to intermittently convey pollutants such as weeds and plastic garbage;

[0055] Starting the third motor 527 drives the second gear 524 to engage with the second rack 523, which can drive the cleaning blade 511 to move downward. The cleaning blade 511 abuts against the side wall of the cleaning hook 422. The rear moving frame 521 moves to the right under the engagement between the second gear 524 and the second rack 523, and the pollutants attached to the cleaning hook 422 are pushed off. The pollutants fall into the debris collection groove 54 for subsequent processing.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for repairing pollutants on the surface of river and lake sediments, comprising a floating body (1) and a housing (22), characterized in that: A sedimentation tank (2) is provided at the top of the floating body (1), a lifting sleeve (21) is connected to the floating body (1) via a lifting device (213), a suction pipe (211) is fixed in the lifting sleeve (21), a connecting hose (212) is provided on the sedimentation tank (2), the connecting hose (212) is connected to the suction pipe (211), a connecting pipe (221) is provided at the top of the box (22), the connecting pipe (221) is slidably connected to the lifting sleeve (21), a disturbance component (223) is provided in the box (22), a sludge pump (214) is provided at a position near the bottom of the side wall of the sedimentation tank, and a clean water pipeline (215) is provided at the upper part of the side wall of the sedimentation tank; A hydraulic cylinder (401) is provided at the top of the floating body (1), a lifting mounting frame (4) is provided at the output end of the hydraulic cylinder (401), a debris cleaning assembly is provided on the side wall of the lifting mounting frame (4), and a hook cleaning assembly (5) is also provided on the inner side wall of the lifting mounting frame (4).

2. The device for repairing pollutants on the surface of river and lake sediments according to claim 1 is characterized by: The disturbance component (223) comprises a slide rail (2231) fixed to the top of the inner wall of the box body (22); a gear rail (2232) is provided on the side wall of the slide rail (2231); a slider (2233) is slidably connected to the slide rail (2231); a rotating shaft (2235) is rotatably connected to the slider (2233); a gear (2236) is provided at the top of the rotating shaft (2235); the gear (2236) is meshedly connected to the slide rail (2231); and a disturbance wheel (2237) is provided at the bottom of the rotating shaft (2235).

3. The device for repairing pollutants on the surface of river and lake sediments according to claim 2 is characterized in that: The inner wall of the box body (22) is rotatably connected to a threaded rod (2234), and the threaded rod (2234) is threadably connected to the slider (2233).

4. The device for repairing pollutants on the surface of river and lake sediments according to claim 1 is characterized by: The crushing assembly (3) comprises a sliding sleeve (31) fixedly connected to the bottom end of the floating body (1); a sliding column (32) is slidably connected to the inner wall of the sliding sleeve (31); a crushing shaft (33) is rotatably connected to the inner wall of the sliding column (32) near the bottom end; and a crushing knife (331) is provided on the crushing shaft (33).

5. The device for repairing pollutants on the surface of river and lake sediments according to claim 1 is characterized by: The inner wall of the lifting and mounting frame (4) is provided with a conveying mechanism (42), the conveying mechanism (42) is provided with a conveying shaft (421), a driven gear (4211) is provided at the side end of the conveying shaft (421), a driving assembly (43) is provided on the side wall of the lifting and mounting frame (4), and cleaning hooks (422) are equidistantly provided on the surface of the conveying mechanism (42).

6. The device for repairing pollutants on the surface of river and lake sediments according to claim 1 is characterized by: The inner side wall of the lifting and mounting frame (4) is connected to a moving cross bar (51) via a reciprocating drive assembly (52), cleaning blades (511) are equidistantly arranged on the moving cross bar (51), and a guide plate (53) is arranged on the inner side wall of the lifting and mounting frame (4) below the moving cross bar (51).

7. The device for repairing pollutants on the surface of river and lake sediments according to claim 6 is characterized by: The reciprocating drive assembly (52) comprises a moving frame (521) slidably connected to the inner wall of the lifting installation frame (4); a sliding frame (522) is slidably connected inside the moving frame (521); a second rack (523) is provided on the inner wall of the sliding frame (522); a second gear (524) is rotatably connected to the inner wall of the lifting installation frame (4); the second gear (524) is meshedly connected with the second rack (523); a limit block (526) is provided on the inner wall of the lifting installation frame (4); a connecting rod (525) is provided at the top end of the sliding frame (522); a limit protrusion (5251) is provided on the side wall of the connecting rod (525); and the limit protrusion (5251) abuts against the side wall of the limit block (526).

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