A riverbed mud dewatering treatment device

Abstract

The present invention discloses a riverbed sludge dewatering treatment device, which belongs to the field of water conservancy engineering technology. The riverbed sludge dewatering treatment device includes a treatment box, a filter press chamber is provided inside the treatment box, a drying unit for dewatering sludge is provided on the inner wall of the treatment box, and a separation component for removing foreign matter in the sludge is provided on the inner wall of the treatment box. When the conveyor belt conveys the sludge, water is sprinkled on the surface of the sludge through a scraping mechanism and the sludge accumulated on the surface of the conveyor belt is scraped off layer by layer, so that the sludge and water are mixed to form mud, thereby reducing the viscosity between the sludge and foreign matter. After the mud falls on the surface of the screen, the vibration of the screen is used to separate the sludge from the foreign matter. The sludge then drives the filtering mechanism inside the filter press chamber to perform filter pressing, thereby achieving preliminary mud-water separation. The separated sludge is squeezed into the interior of the drying unit for drying and dewatering treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy engineering, and in particular to a riverbed mud dewatering treatment device. Background Art

[0002] In recent years, environmentally friendly ecological dredging technology has gradually developed. It can not only effectively remove pollutants in riverbed mud, but also create favorable conditions for restoring the water ecosystem. Compared with general dredging projects, environmentally friendly ecological dredging focuses on pollutants in bottom mud and floating silt, while trying not to destroy the recovery conditions of the aquatic ecosystem as much as possible.

[0003] Chinese patent CN116036699B, published on October 20, 2023, discloses a sludge treatment device for river and lake management. Through net bags respectively arranged at both ends of the rotating frame, the sludge is cyclically and alternately dewatered and solid sludge is removed, solving the technical problems of low efficiency and long cycle of traditional sludge-water separation. However, the sludge treatment device for river and lake management is difficult to separate foreign matter (such as stones, aquatic plants, garbage, etc.) in the sludge during use, making the sludge treatment not thorough enough. Summary of the Invention

[0004] The purpose of the present invention is to provide a riverbed mud dewatering treatment device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a riverbed sludge dewatering treatment device, comprising a treatment box, a filter press chamber provided inside the treatment box, a conveyor belt provided on the inner wall of the treatment box, a drying unit for dewatering the sludge provided on the inner wall of the treatment box, a discharge port provided on the outer wall of the bottom end of the treatment box, and a separation component for removing foreign matter from the sludge provided on the inner wall of the treatment box;

[0006] The separation assembly includes a screen disposed inside a treatment box, a slag discharge plate fixedly connected to the inner wall of the treatment box, and a slag discharge port adapted to the slag discharge plate is provided on the outer wall of the treatment box. The sludge on the surface of the conveyor belt is transported to the surface of the screen by a scraping mechanism, and foreign matter in the sludge is filtered out by the screen, and the sludge is transported to the interior of a filter press bin, where the sludge is separated into solid and liquid by a filter press mechanism, and is squeezed into the interior of a drying unit for further dehydration.

[0007] The outer wall of the water pump is provided with a water pipe which is adapted to fit the water filter press, and the outer wall of the water pump is provided with a water pipe which is adapted to fit the water filter press.

[0008] The outer wall of the bottom end of the rubber sleeve is provided with tooth blocks at equal intervals, and the outer wall of the connecting shaft is provided with tooth grooves adapted to the tooth blocks;

[0009] The scraper mechanism also includes a scraper installed on the outer wall of the water bag, a water inlet channel adapted to the water bag is provided on the inner wall of the scraper, a sliding rod is slidably connected to the inner wall of the water inlet channel, a resistance plate is connected to the outer wall of the sliding rod, a return spring adapted to the sliding rod is provided on the inner wall of the water inlet channel, a connecting groove is opened on the inner wall of the sliding rod, and a through groove adapted to the connecting groove is provided on the outer wall of the scraper.

[0010] Furthermore, the separation assembly also includes a separation box installed on the inner wall of the processing box, a transmission spring adapted for the screen is provided on the outer wall of the separation box, a rotating shaft is rotatably connected to the inner wall of the processing box, a cam adapted for the screen is provided on the outer wall of the rotating shaft, and a connection port adapted for the filter press is provided on the outer wall of the bottom end of the separation box.

[0011] Furthermore, the filter press mechanism includes a cylinder installed on the inner wall of the filter press bin, and an opening and closing plate arranged between the filter press bin and the drying unit, one end of the cylinder is fixedly connected to a push plate, a filter sponge is provided on the outer wall of the push plate, a filter membrane is bonded to the outer wall of the filter sponge, a through hole is provided on the outer wall of the push plate, a connecting sleeve adapted to the through hole is provided on the outer wall of the push plate, a notch is provided on the outer wall of the connecting sleeve, a second limit spring is connected to the inner wall of the connecting sleeve, and a second limit block adapted to the through hole is provided on the outer wall of one end of the second limit spring.

[0012] Furthermore, the filter press mechanism also includes a fixed sleeve installed on the inner wall of the filter press bin, and a slide groove opened on the inner wall of the separation box, a piston rod adapted to the push plate is provided on the inner wall of the fixed sleeve, a second connecting spring adapted to the piston rod is provided on the inner wall of the fixed sleeve, a ventilation duct adapted to the slide groove is provided on the outer wall of the fixed sleeve, and a sealing plate adapted to the connection port is provided on the inner wall of the slide groove.

[0013] Furthermore, the drying unit includes a drying box arranged inside the processing box, a feed port is provided at one end of the drying box, a feed screw unit is provided inside the feed port, a drying bin and an auxiliary drying bin are provided inside the drying box, the drying bin and the auxiliary drying bin are connected by an opening, a conveying screw unit is provided inside the drying bin, and an auxiliary conveying screw unit is provided inside the auxiliary drying bin, a heating module is installed on the outer wall of the drying box, an electric cylinder is installed on the inner wall of the processing box, and one end of the electric cylinder is connected to a baffle.

[0014] Furthermore, a limiting module adapted to the conveyor belt is provided on the inner wall of the processing box, and the limiting module includes a support plate arranged at the middle position of the conveyor belt, and a connecting plate fixed at a position below the conveyor belt, and the top outer wall of the connecting plate is in contact with the bottom outer wall of the conveyor belt, and a scraping surface is provided at one end of the connecting plate.

[0015] The difference from the prior art is that the beneficial effects of this application are:

[0016] When the conveyor belt is transporting the silt, the scraper mechanism sprinkles water on the surface of the silt and scrapes off the silt accumulated on the surface of the conveyor belt layer by layer, so that the silt and water are mixed to form mud, thereby reducing the stickiness between the silt and foreign matter. After the mud falls onto the surface of the screen, the silt and foreign matter are separated by the vibration of the screen. The silt then drives the filter mechanism inside the filter press to perform filter pressing, thereby achieving preliminary mud-water separation. The separated silt is squeezed into the interior of the drying unit for drying and dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the processing box of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the limiting module of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the feed port and the feed screw unit cooperating with each other in the present invention;

[0021] Figure 5This is a schematic diagram of the structure of the electric cylinder and the baffle cooperating with each other in the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the tooth block and the tooth groove cooperating with each other in the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the connecting shaft and the water inlet trough cooperating with each other in the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the rotating shaft and the cam cooperating with each other in the present invention;

[0025] Figure 9 This is a schematic diagram of the structure of the separation box and the connection port cooperating with each other in the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the filter sponge and filter membrane cooperating with each other in the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of the fixed sleeve and the piston rod cooperating with each other in the present invention;

[0028] Figure 12 For the present invention Figure 7 A in the middle is an enlarged structural diagram;

[0029] Figure 13 For the present invention Figure 7 Enlarged structural diagram at point B in the middle.

[0030] In the figure: 1. Processing box; 2. Filter press chamber; 3. Conveyor belt; 4. Drying unit; 401. Drying box; 402. Feeding port; 403. Feeding screw unit; 404. Drying chamber; 405. Auxiliary drying chamber; 406. Opening; 407. Conveying screw unit; 408. Auxiliary conveying screw unit; 409. Heating module; 410. Electric cylinder; 411. Baffle; 5. Limiting module; 501. Support plate; 502. Connecting plate; 503. Scraping surface; 6. Feeding port; 7. Connecting shaft; 8. Rubber sleeve; 9. Tooth block; 10. Tooth groove; 11. Water inlet trough; 12. Water bag; 13. First connecting pipe; 14. Water outlet; 15. First limiting spring; 16. Limiting sleeve; 17. Second connecting pipe; 18. Connecting block; 19. First connecting Spring; 20. Slider; 21. Groove; 22. First limit block; 23. Scraper; 24. Water inlet channel; 25. Slide bar; 26. Contact plate; 27. Return spring; 28. Connecting groove; 29. ​​Through groove; 30. Water pump; 31. Water pipe; 32. Separation box; 33. Transmission spring; 34. Screen; 35. Rotating shaft; 36. Cam; 37. Slag discharge plate; 38. Slag discharge port; 39. Connecting port; 40. Cylinder; 41. Push plate; 42. Filter sponge; 43. Filter membrane; 44. Through hole; 45. Connecting sleeve; 46. Notch; 47. Second limit spring; 48. Second limit block; 49. Fixed sleeve; 50. Piston rod; 51. Second connecting spring; 52. Ventilation pipe; 53. Slide groove; 54. Blocking plate; 55. Opening and closing plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Example 1:

[0034] See also Figures 1-13The present invention provides a technical solution: a riverbed sludge dewatering treatment device, comprising a treatment box 1, a filter press bin 2 is arranged inside the treatment box 1, a conveyor belt 3 is arranged on the inner wall of the treatment box 1, and a drying unit 4 for dehydrating the sludge is arranged on the inner wall of the treatment box 1. A discharge port 6 is opened on the outer wall of the bottom end of the treatment box 1, and a separation component for removing foreign matter in the sludge is arranged on the inner wall of the treatment box 1; the separation component includes a screen 34 arranged inside the treatment box 1, a slag discharge plate 37 is fixedly connected to the inner wall of the treatment box 1, and a slag discharge port 38 adapted to the slag discharge plate 37 is provided on the outer wall of the treatment box 1. The sludge on the surface of the conveyor belt 3 is transported to the surface of the screen 34 by a scraping mechanism, and the foreign matter in the sludge is screened out by filtering the screen 34, and the sludge is transported into the interior of the filter press bin 2, where the sludge is separated into solid and liquid by the filter press mechanism, and the sludge is squeezed into the interior of the drying unit 4 for further dehydration.

[0035] During use, the silt enters the interior of the treatment box 1 and accumulates on the surface of the conveyor belt 3. At this time, an external motor is connected to drive the conveyor belt 3 to move slowly, and at the same time, the scraping mechanism is driven to sprinkle water on the surface of the silt and scrape off the silt accumulated on the surface of the conveyor belt 3 layer by layer, so that the silt and water are mixed to form mud, thereby reducing the viscosity between the silt and foreign matter. The scraped mud will fall onto the surface of the screen 34 together with the foreign matter on the surface, and through the screening of the screen 34, the silt and foreign matter are separated, so that the foreign matter falls onto the surface of the slag discharge plate 37 through the inclined direction of the screen 34 and is discharged through the slag discharge port 38, while the silt passes through the screen 34 and enters the interior of the filter press silt 2. After a certain amount of silt enters the interior of the filter press silt 2, the filter press mechanism is started to filter the silt, thereby achieving preliminary mud-water separation. The separated silt is squeezed into the interior of the drying unit 4 for drying and dehydration treatment, and finally discharged through the discharge port 6.

[0036] The scraping mechanism includes a connecting shaft 7 mounted on the inner wall of the processing box 1, a rubber sleeve 8 is rotatably connected to the outer wall of the connecting shaft 7, a water inlet groove 11 is provided on the inner wall of the connecting shaft 7, tooth blocks 9 are evenly spaced on the outer wall of the bottom end of the rubber sleeve 8, a tooth groove 10 adapted to the tooth blocks 9 is provided on the outer wall of the connecting shaft 7, a water bag 12 is covered on the inside of the rubber sleeve 8, a first connecting pipe 13 adapted to the water inlet groove 11 is provided on the inner wall of the connecting shaft 7, a water outlet 14 is provided on the outer wall of the top end of the first connecting pipe 13, a first limit spring 15 is provided on the inner wall of the connecting shaft 7, and a limit sleeve 16 adapted to the water outlet 14 is provided on the outer wall of the first limit spring 15. A second connecting tube 17 adapted to the limiting sleeve 16 is fixedly connected to the inner wall of the water bag 12, a connecting block 18 is fixedly connected to the inner wall of the second connecting tube 17, a first connecting spring 19 is fixedly connected to the outer wall of the connecting block 18, a slider 20 adapted to the first connecting tube 13 is provided on the outer wall of one end of the first connecting spring 19, grooves 21 are provided at equal intervals along the circumferential direction on the outer edge of the slider 20, a first limiting block 22 adapted to the grooves 21 is provided on the inner wall of the second connecting tube 17, a water pump 30 for pumping water from the inside of the filter press 2 is provided on the outer wall of the processing box 1, and a water pipe 31 adapted to the water inlet trough 11 is provided on the outer wall of the water pump 30.

[0037] During use, through the meshing of the tooth block 9 and the tooth groove 10, the external motor drives the connecting shaft 7 to rotate, and the connecting shaft 7 can drive the rubber sleeve 8 to rotate synchronously, and in the process of rotation, the second connecting pipe 17 and the limiting sleeve 16 are positioned, and the water inside the filter press 2 is pumped out by the water pump 30 and injected into the water inlet tank 11 through the water pipe 31, so that the pressure inside the water inlet tank 11 increases. At this time, through the connection between the connecting shaft 7 and the rubber sleeve 8, the second connecting pipe 17 enters the interior of the connecting shaft 7 and squeezes the limiting sleeve 16, thereby pushing the limiting sleeve 16 to slide on the surface of the first connecting pipe 13 and squeeze the first limiting spring 15, thereby releasing the pressure. The water outlet 14 is limited, and at the same time, the first connecting pipe 13 will also enter the interior of the second connecting pipe 17 and apply a thrust to the surface of the slider 20, thereby pushing the slider 20 to slide inside the second connecting pipe 17, and cooperate with the connecting block 18 to limit the first connecting spring 19, applying pressure to the first connecting spring 19 to deform. When the slider 20 slides upward, it can drive the groove 21 to separate from the first limiting block 22, thereby releasing the limitation of the groove 21, so that the water inside the water inlet tank 11 enters the first connecting pipe 13 again and is discharged from the water outlet 14. It can pass through the groove 21 and pass through the slider 20 into the interior of the second connecting pipe 17.

[0038] The scraping mechanism also includes a scraper 23 installed on the outer wall of the water bag 12. A water inlet channel 24 adapted to the water bag 12 is provided on the inner wall of the scraper 23. A slide rod 25 is slidably connected to the inner wall of the water inlet channel 24. A resistance plate 26 is connected to the outer wall of the slide rod 25. A return spring 27 adapted to the slide rod 25 is provided on the inner wall of the water inlet channel 24. A connecting groove 28 is provided on the inner wall of the slide rod 25. A through groove 29 adapted to the connecting groove 28 is provided on the outer wall of the scraper 23.

[0039] When in use, the water inside the water bag 12 can enter the interior of the scraper 23 through the water inlet channel 24. When the silt is transported to the surface of the scraper 23 through the conveyor belt 3, the connecting shaft 7 drives the rubber sleeve 8 to rotate, so that the scraper 23 scrapes the silt. When the scraper 23 scrapes the silt, the resistance plate 26 on its surface will first contact the silt. In this process, when the viscosity of the silt is high, the resistance generated will cause the force applied by the scraper 23 on the surface of the silt to become larger. At this time, the force exerted by the silt on the surface of the resistance plate 26 can push the resistance plate 26 and the slide bar 25 to slide toward the inside of the scraper 23 and squeeze the return spring 27. When the slide bar 25 slides toward the inside of the scraper 23, one end of the connecting groove 28 will move to the surface of the through groove 29. At this time, the water inside the water inlet channel 24 can enter the interior of the through groove 29 through the connecting groove 28 and be discharged to the surface of the silt and mix with the silt, thereby diluting the silt into mud, thereby reducing the viscosity of the silt.

[0040] The separation assembly also includes a separation box 32 installed on the inner wall of the processing box 1, and a transmission spring 33 adapted to the screen 34 is provided on the outer wall of the separation box 32. A rotating shaft 35 is rotatably connected to the inner wall of the processing box 1, and a cam 36 adapted to the screen 34 is provided on the outer wall of the rotating shaft 35. A connection port 39 adapted to the filter press 2 is provided on the outer wall of the bottom end of the separation box 32.

[0041] During use, after the mud falls onto the surface of the screen 34, the vibration generated by the impact force of the falling mud can achieve the preliminary separation of the mud and foreign matter, so that a part of the mud passes through the screen 34 and enters the interior of the separation box 32, and then the external motor drives the rotating shaft 35 to drive the cam 36 to rotate. When the cam 36 rotates, it can push the screen 34 upward and stretch the transmission spring 33. When the cam 36 cancels the lifting of the screen 34, the transmission spring 33 is forced to pull the screen 34 to reset, thereby causing the screen to vibrate. The vibration of the screen 34 further separates the mud and foreign matter, so that the foreign matter falls to the surface of the slag discharge plate 37 through the inclined direction of the screen 34, and after the mud passes through the screen 34 and enters the interior of the separation box 32, it will flow into the interior of the filter press 2 through the connecting port 39.

[0042] The filter press mechanism includes a cylinder 40 installed on the inner wall of the filter press bin 2, and an opening and closing plate 55 arranged between the filter press bin 2 and the drying unit 4. One end of the cylinder 40 is fixedly connected to a push plate 41, a filter sponge 42 is provided on the outer wall of the push plate 41, a filter membrane 43 is bonded to the outer wall of the filter sponge 42, a through hole 44 is provided on the outer wall of the push plate 41, a connecting sleeve 45 adapted to the through hole 44 is provided on the outer wall of the push plate 41, a notch 46 is provided on the outer wall of the connecting sleeve 45, a second limit spring 47 is connected to the inner wall of the connecting sleeve 45, and a second limit block 48 adapted to the through hole 44 is provided on the outer wall of one end of the second limit spring 47.

[0043] During use, after the mud enters the interior of the filter press 2, the cylinder 40 is started to push the push plate 41 to squeeze the mud. During this process, the water in the mud passes through the filter sponge 42 and the filter membrane 43 and enters the through hole 44 through filtration, and applies a thrust to the second limit block 48, thereby pushing the second limit block 48 to slide toward the interior of the connecting sleeve 45 and squeeze the second limit spring 47, so that the limit on the through hole 44 can be released, so that the filtered water can pass through the through hole 44 into the interior of the connecting sleeve 45 and be discharged from the notch 46, thereby realizing preliminary mud and water separation. Finally, the opening and closing plate 55 is opened to squeeze the separated sludge into the interior of the drying unit 4 for drying and dehydration.

[0044] The filter press mechanism also includes a fixed sleeve 49 installed on the inner wall of the filter press chamber 2, and a slide groove 53 opened on the inner wall of the separation box 32. A piston rod 50 adapted to the push plate 41 is provided on the inner wall of the fixed sleeve 49, a second connecting spring 51 adapted to the piston rod 50 is provided on the inner wall of the fixed sleeve 49, a ventilation pipe 52 adapted to the slide groove 53 is provided on the outer wall of the fixed sleeve 49, and a sealing plate 54 adapted to the connecting port 39 is provided on the inner wall of the slide groove 53.

[0045] When in use, the push plate 41 will release the limit on the piston rod 50 when squeezing the mud. At this time, the second connecting spring 51 is forced to push the piston rod 50 to slide inside the fixed sleeve 49, and push the air inside the fixed sleeve 49 into the inside of the slide groove 53 through the ventilation pipe 52, so that the pressure inside the slide groove 53 increases, thereby pushing the sealing plate 54 to slide outward and limit the connecting port 39, preventing the mud from continuing to enter the interior of the filter press 2.

[0046] The drying unit 4 includes a drying box 401 arranged inside the processing box 1, a feed port 402 is provided at one end of the drying box 401, a feed screw unit 403 is provided inside the feed port 402, a drying chamber 404 and an auxiliary drying chamber 405 are provided inside the drying box 401, the drying chamber 404 and the auxiliary drying chamber 405 are connected by an opening 406, a conveying screw unit 407 is provided inside the drying chamber 404, and an auxiliary conveying screw unit 408 is provided inside the auxiliary drying chamber 405, a heating module 409 is installed on the outer wall of the drying box 401, an electric cylinder 410 is installed on the inner wall of the processing box 1, and one end of the electric cylinder 410 is connected to a baffle 411.

[0047] During use, when the silt is squeezed into the feed port 402, the feeding screw unit 403 is started to crush and transport the silt. When there is less silt, the silt will enter the drying bin 404. When there is more silt, the speed at which the silt enters the feed port 402 is higher than the speed at which the silt enters the drying bin 404 from the feed port 402. The silt is diverted by the feeding screw unit 403, so that part of the silt enters the auxiliary drying bin 405. At this time, the conveying screw unit 407 and the auxiliary conveying screw unit 408 are started to transport the silt inside the drying bin 404 and the auxiliary drying bin 405. During this process, the heating module 409 is started to deheat the drying box 401 to dehydrate the silt, and the silt inside the auxiliary drying bin 405 will finally enter the interior of the drying bin 404 through the opening 406. After that, the electric cylinder 410 pulls the baffle 411 to release the limit on the discharge port 6, so that the dehydrated silt is discharged from the discharge port 6.

[0048] A limiting module 5 adapted to the conveyor belt 3 is provided on the inner wall of the processing box 1. The limiting module 5 includes a support plate 501 arranged at the middle position of the conveyor belt 3, and a connecting plate 502 fixed at a position below the conveyor belt 3. The top outer wall of the connecting plate 502 is in contact with the bottom outer wall of the conveyor belt 3, and a scraping surface 503 is provided at one end of the connecting plate 502.

[0049] When in use, the support plate 501 can support the conveyor belt 3 to ensure that the conveyor belt 3 will not be deformed when transporting the sludge, and the connecting plate 502 can divide the space inside the treatment box 1 into two parts, preventing the sludge from falling onto the surface of the drying unit 4 through the gap between the conveyor belt 3 and the treatment box 1, and the scraping surface 503 can clean the conveyor belt 3 and scrape off the sludge adhering to the surface of the conveyor belt 3.

[0050] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A riverbed mud dewatering treatment device, comprising a treatment box (1), characterized in that: A filter press (2) is provided inside the treatment box (1), a conveyor belt (3) is provided on the inner wall of the treatment box (1), a drying unit (4) for dehydrating sludge is provided on the inner wall of the treatment box (1), a discharge port (6) is provided on the outer wall of the bottom end of the treatment box (1), and a separation component for removing foreign matter in the sludge is provided on the inner wall of the treatment box (1); The separation component includes a screen (34) arranged inside the processing box (1), a slag discharge plate (37) is fixedly connected to the inner wall of the processing box (1), and a slag discharge port (38) adapted to the slag discharge plate (37) is provided on the outer wall of the processing box (1). The sludge on the surface of the conveyor belt (3) is transported to the surface of the screen (34) by a scraping mechanism, and foreign matter in the sludge is filtered out by the filtration of the screen (34), and the sludge is transported to the interior of the filter press (2). The sludge is separated into solid and liquid by the filter press mechanism inside the filter press (2), and the sludge is squeezed into the interior of the drying unit (4) for further dehydration; The scraping mechanism comprises a connecting shaft (7) mounted on the inner wall of the processing box (1), a rubber sleeve (8) is rotatably connected to the outer wall of the connecting shaft (7), a water inlet groove (11) is provided on the inner wall of the connecting shaft (7), the interior of the rubber sleeve (8) is covered with a water bag (12), a first connecting pipe (13) adapted to the water inlet groove (11) is provided on the inner wall of the connecting shaft (7), a water outlet (14) is provided on the outer wall of the top end of the first connecting pipe (13), a first limiting spring (15) is provided on the inner wall of the connecting shaft (7), a limiting sleeve (16) adapted to the water outlet (14) is provided on the outer wall of the first limiting spring (15), and the limiting sleeve (16) is fixedly connected to the inner wall of the water bag (12). An adapted second connecting pipe (17), a connecting block (18) is fixedly connected to the inner wall of the second connecting pipe (17), a first connecting spring (19) is fixedly connected to the outer wall of the connecting block (18), a slider (20) adapted to the first connecting pipe (13) is provided on the outer wall of one end of the first connecting spring (19), grooves (21) are provided on the outer edge of the slider (20) at equal intervals along the circumferential direction, a first limiting block (22) adapted to the groove (21) is provided on the inner wall of the second connecting pipe (17), a water pump (30) for pumping water from the interior of the filter press (2) is provided on the outer wall of the treatment box (1), and a water pipe (31) adapted to the water inlet trough (11) is provided on the outer wall of the water pump (30); Tooth blocks (9) are provided at equal intervals on the outer wall of the bottom end of the rubber sleeve (8), and tooth grooves (10) adapted to the tooth blocks (9) are provided on the outer wall of the connecting shaft (7); The scraping mechanism further comprises a scraper (23) mounted on the outer wall of the water bag (12); a water inlet channel (24) adapted to the water bag (12) is provided on the inner wall of the scraper (23); a slide rod (25) is slidably connected to the inner wall of the water inlet channel (24); a resisting plate (26) is connected to the outer wall of the slide rod (25); a return spring (27) adapted to the slide rod (25) is provided on the inner wall of the water inlet channel (24); a connecting groove (28) is provided on the inner wall of the slide rod (25); and a through groove (29) adapted to the connecting groove (28) is provided on the outer wall of the scraper (23).

2. The riverbed mud dewatering treatment device according to claim 1, characterized in that: The separation assembly further comprises a separation box (32) mounted on the inner wall of the treatment box (1); a transmission spring (33) adapted for the screen (34) is provided on the outer wall of the separation box (32); a rotating shaft (35) is rotatably connected to the inner wall of the treatment box (1); a cam (36) adapted for the screen (34) is provided on the outer wall of the rotating shaft (35); and a connection port (39) adapted for the filter press (2) is provided on the outer wall of the bottom end of the separation box (32).

3. The riverbed mud dewatering treatment device according to claim 1, characterized in that: The filter press mechanism comprises a cylinder (40) mounted on the inner wall of the filter press bin (2), and an opening and closing plate (55) arranged between the filter press bin (2) and the drying unit (4); one end of the cylinder (40) is fixedly connected to a push plate (41); a filter sponge (42) is arranged on the outer wall of the push plate (41); a filter membrane (43) is bonded to the outer wall of the filter sponge (42); a through hole (44) is provided on the outer wall of the push plate (41); a connecting sleeve (45) adapted to the through hole (44) is provided on the outer wall of the push plate (41); a notch (46) is provided on the outer wall of the connecting sleeve (45); a second limit spring (47) is connected to the inner wall of the connecting sleeve (45); and a second limit block (48) adapted to the through hole (44) is provided on the outer wall of one end of the second limit spring (47).

4. The riverbed mud dewatering treatment device according to claim 3, characterized in that: The filter press mechanism further comprises a fixed sleeve (49) mounted on the inner wall of the filter press bin (2), and a slide groove (53) provided on the inner wall of the separation box (32); a piston rod (50) adapted to the push plate (41) is provided on the inner wall of the fixed sleeve (49); a second connecting spring (51) adapted to the piston rod (50) is provided on the inner wall of the fixed sleeve (49); a ventilation duct (52) adapted to the slide groove (53) is provided on the outer wall of the fixed sleeve (49); and a sealing plate (54) adapted to the connection port (39) is provided on the inner wall of the slide groove (53).

5. The riverbed mud dewatering treatment device according to claim 1, characterized in that: The drying unit (4) comprises a drying box (401) arranged inside the processing box (1), a feed port (402) being provided at one end of the drying box (401), a feed screw unit (403) being provided inside the feed port (402), a drying chamber (404) and an auxiliary drying chamber (405) being provided inside the drying box (401), the drying chamber (404) and the auxiliary drying chamber (405) being connected via an opening (406), a conveying screw unit (407) being provided inside the drying chamber (404), and an auxiliary conveying screw unit (408) being provided inside the auxiliary drying chamber (405), a heating module (409) being installed on the outer wall of the drying box (401), an electric cylinder (410) being installed on the inner wall of the processing box (1), and a baffle (411) being connected to one end of the electric cylinder (410).

6. The riverbed mud dewatering treatment device according to claim 1, characterized in that: A limiting module (5) adapted to the conveyor belt (3) is provided on the inner wall of the processing box (1), and the limiting module (5) comprises a support plate (501) provided at the middle position of the conveyor belt (3), and a connecting plate (502) fixed at a position below the conveyor belt (3), wherein the top outer wall of the connecting plate (502) is in contact with the bottom outer wall of the conveyor belt (3), and a scraping surface (503) is provided at one end of the connecting plate (502).

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