Dehydrator for cleaning river silt

Abstract

The invention relates to the technical field of sludge treatment, in particular to a river sludge cleaning dehydrator which comprises an outer box and a rotary drum located on the inner side of the outer box. The outer box body is composed of a water collecting chamber located on the lower side and a sludge collecting chamber located on the upper side, the water collecting chamber is communicated with the sludge collecting chamber, a discharging channel is arranged on the side wall of the sludge collecting chamber in a communicating mode, and a drainage channel is arranged at the bottom of the water collecting chamber in a communicating mode; the shape of the side wall of the rotary drum is set to be a step area, the diameter of the step area is sequentially increased from bottom to top, the step area on the rotary drum is located in the water collecting chamber, and a top tray is arranged at the top of the rotary drum and located in the sludge collecting chamber; sludge is continuously supplied into the equipment and aligned for dehydration treatment, and then the dehydrated sludge and sewage are respectively discharged, so that the working mode of continuous operation is realized, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to a dewatering machine for cleaning river sludge. Background Art

[0002] With the rapid development of industrialization and urbanization, the problem of river pollution has become increasingly serious. A large amount of industrial wastewater, domestic sewage and agricultural sewage are discharged into rivers, resulting in the accumulation of a large amount of organic matter, heavy metals and other harmful substances in riverbed sediments. These pollutants not only affect the water quality, but also cause damage to the aquatic ecosystem and even threaten human health. Therefore, carrying out river dredging, removing riverbed silt and restoring the ecological balance of rivers has become an important task of environmental protection.

[0003] In the process of river dredging, sludge treatment is a key link. The traditional treatment method is to squeeze and dehydrate the sludge through a filter press, and then treat the sewage and mud cake separately or recycle them. When the filter press is in use, it is necessary to provide a large conveying pressure for the sludge, so that the sludge can be squeezed out. Its energy loss is large, and after the traditional filter press has completed dehydration of the sludge, it needs to shut down and discharge the mud cake, and then carry out the next batch of dehydration work. It cannot achieve the working effect of continuous production. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a dewatering machine for river sludge cleaning, and the specific technical solution adopted is: According to a first aspect of the present invention, there is provided a dewatering machine for cleaning river sludge, comprising an outer box body and a rotating drum located inside the outer box body; The outer box body is composed of a water collecting chamber located at the lower side and a mud collecting chamber located at the upper side, the water collecting chamber and the mud collecting chamber are connected, a discharge channel is connected to the side wall of the mud collecting chamber, and a drainage channel is connected to the bottom of the water collecting chamber; The side wall shape of the drum is set to be a stepped area, and the diameter of the stepped area increases from bottom to top, the stepped area on the drum is located in the water collection chamber, and a top plate is set on the top of the drum, and the top plate is located in the mud collection chamber; The sludge is fed into the drum through the middle position of the bottom of the drum, the horizontal part of each step in the stepped area is used to carry the sludge, and the vertical part of each step is densely covered with filter holes.

[0005] Furthermore, a plurality of scrapers are arranged on the upper surface of the top plate.

[0006] Furthermore, a vibration structure is provided at the bottom of the outer box body, and the vibration structure is used to drive the rotating drum to vibrate in the vertical direction; The top plate slides vertically in the mud collecting chamber, an auxiliary ring is fixed to the bottom of the rotating drum, and the bottom of the auxiliary ring slides and extends to the bottom of the outer box body.

[0007] Furthermore, a collar is provided in the middle of the bottom of the drum, a plurality of push plates are provided on the upper surface of the collar, a vertical cylinder is slidably provided in the collar, a feed pipe is provided at the bottom of the vertical cylinder, and the feed pipe is used to transport sludge into the drum; The sleeve and the drum rotate in the same direction and at a differential speed, and the top of the vertical drum is always located in the sleeve.

[0008] Furthermore, an outer gear ring is fixedly mounted on the outer wall of the vertical cylinder, and a plurality of transmission gears are meshedly mounted on the outer gear ring. An inner gear ring is mounted on the outer sides of the plurality of transmission gears, and the transmission gears mesh with the inner gear ring. A support rod is arranged on each transmission gear, and the transmission gear rotates on the support rod, and the top of the support rod is fixed to the bottom of the collar. Among them, a plurality of plug plates are vertically slidably inserted into the inner gear ring, and the top of the plug plate is fixed to the bottom of the rotating drum.

[0009] Furthermore, the upper and lower sides of the inner circumferential wall of the inner gear ring and the upper and lower sides of the outer circumferential wall of the outer gear ring are provided with ribs, and the ribs are used to block the position of the transmission gear; Wherein, the bottom of the support rod vertically slides through the transmission gear.

[0010] Furthermore, a supporting ring is provided below the outer box body, and a plurality of slides are provided on the supporting ring. The slides slide on the supporting ring around the axis of the vertical cylinder, and a vibration gear is rotatably provided on each slide. The plurality of vibration gears are distributed around the axis of the vertical cylinder, and the rotation axis of the vibration gear is perpendicular to the axis of the vertical cylinder. An eccentric column is eccentrically provided on the vibration gear, and the eccentric column is rotatably connected to the plug plate. Wherein, an annular tooth area is arranged on the upper surface of the support ring, and the vibration gear meshes with the teeth in the tooth area.

[0011] Furthermore, the circumferential outer wall of the inner gear ring is configured as a conical area, the support ring is provided with a motor, the output end of the motor is provided with a cone wheel, and the cone wheel is drivingly connected to the conical area of ​​the inner gear ring; Among them, the outer wall of the outer box body is provided with a support leg, the support leg is fixedly connected to the support ring through a first support plate, the support ring is fixedly connected to the vertical cylinder through a second support plate, and the feed pipe is fixed on the support ring.

[0012] The beneficial effects of the present invention are: By continuously feeding sludge into the equipment and aligning the dehydration treatment, and then discharging the dehydrated sludge and sewage separately, a continuous operation working mode is realized, which greatly improves the working efficiency; by adopting the step-by-step centrifugal dehydration method, it is only necessary to provide rotational power for the drum, and there is no need to provide a large conveying pressure for the sludge like a traditional filter press, thereby significantly reducing energy consumption, and because the sludge centrifugal radius will gradually increase, the sludge can be dehydrated step by step, which greatly improves the dehydration effect and avoids mutual interference between sludge on different steps and with different water contents; by adopting the method of sludge climbing upward on the step area and sewage flowing downward through the filter holes, the sludge and sewage can be effectively separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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 recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the internal structure of the middle and outer boxes; Figure 3 is a schematic diagram of a cross-sectional structure of an outer box body in an embodiment of the present invention; Figure 4 2 is a schematic diagram of the structure of a rotating drum in an embodiment of the present invention; Figure 5 yes Figure 4 Schematic diagram of explosion structure; Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the rotating drum; Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure of the inner gear ring and the support ring.

[0015] Reference numerals: 1. Outer box; 2. Rotating drum; 3. Water collecting chamber; 4. Mud collecting chamber; 5. Discharge channel; 6. Drainage channel; 7. Step area; 8. Top plate; 9. Scraper; 10. Auxiliary ring; 11. Sleeve ring; 12. Push plate; 13. Vertical cylinder; 14. Feed pipe; 15. External gear ring; 16. Transmission gear; 17. Support rod; 18. Internal gear ring; 19. Support ring; 20. Sliding seat; 21. Vibration gear; 22. Eccentric column; 23. Insert plate; 24. Motor; 25. Cone wheel; 26. Leg; 27. First support plate; 28. Second support plate. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are 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, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0019] like Figures 1 to 7 As shown, a dewatering machine for cleaning river sludge of the present invention comprises an outer box body 1 and a rotating drum 2 located inside the outer box body 1; The outer box body 1 is composed of a water collecting chamber 3 located at the lower side and a mud collecting chamber 4 located at the upper side. The water collecting chamber 3 is connected to the mud collecting chamber 4. A discharge channel 5 is connected to the side wall of the mud collecting chamber 4. A drainage channel 6 is connected to the bottom of the water collecting chamber 3. The side wall shape of the drum 2 is set to a stepped area 7, and the diameter of the stepped area 7 increases from bottom to top. The stepped area 7 on the drum 2 is located in the water collection chamber 3. The top of the drum 2 is provided with a top plate 8, and the top plate 8 is located in the mud collection chamber 4. The sludge is fed into the drum 2 through the middle position of the bottom of the drum 2. The horizontal part of each step of the step area 7 is used to carry the sludge, and the vertical part of each step is densely covered with filter holes.

[0020] In detail, the drum 2 can rotate in the outer box body 1, the water collecting chamber 3 is used to store dehydrated sewage, and the sewage can be discharged through the drainage channel 6, the mud collecting chamber 4 is used to store dehydrated sludge, and the sludge can be discharged through the discharge channel 5, and the top plate 8 separates the water collecting chamber 3 and the mud collecting chamber 4. When in use, the sludge is continuously fed into the drum 2 from the middle position at the bottom of the drum 2, and the sludge is gathered on the lower side of the drum 2. When the drum 2 is rotated, the drum 2 will drive the sludge to rotate. At this time, the sludge gradually moves toward the step area 7. The rotating centrifugal state of the sludge will cause the sewage inside to be discharged through the filter holes on each step, thereby realizing the dehydration work. With the continuous increase of the sludge on the steps and the centrifugal movement of the sludge Movement, the silt is continuously accumulated in the vertical part of the step, while the horizontal part of the step blocks the silt from flowing downward, so the silt can only flow upward and move to the adjacent step, so that the silt continuously climbs upward on the step area 7, and the sewage will be discharged into the collecting chamber 3 through the filter holes on each step. Since the diameter of the step area 7 gradually increases from bottom to top, the silt centrifugal radius gradually increases, and the centrifugal force of the silt gradually increases, thereby achieving a step-by-step centrifugal dehydration effect on the silt. Since this step-by-step centrifugal method is adopted, it is only necessary to provide rotational power for the drum 2, and there is no need to provide a large conveying pressure for the sludge as in the traditional method, which effectively reduces energy consumption.

[0021] Since the sludge is in an upward climbing state during dehydration, and the sewage will enter the water collecting chamber 3 and flow downward, the sludge and sewage can be effectively separated. When the sludge reaches the top plate 8, due to the obstruction of the inner wall of the water collecting chamber 3, the top plate 8 will carry the sludge and rotate synchronously. When the sludge rotates to the position of the discharge channel 5, the sludge is centrifugally discharged through the discharge channel 5. Since the sludge can be continuously supplied to the drum 2 and dehydrated, the work efficiency can be greatly improved.

[0022] By continuously supplying sludge into the equipment and aligning the dehydration treatment, and then discharging the dehydrated sludge and sewage separately, a continuous operation mode is achieved, which greatly improves the work efficiency; by adopting a step-by-step centrifugal dehydration method, it is only necessary to provide rotational power for the drum 2, and there is no need to provide a large conveying pressure for the sludge like a traditional filter press, thereby significantly reducing energy consumption, and because the sludge centrifugal radius will gradually increase, the sludge can be dehydrated step by step, which greatly improves the dehydration effect and avoids mutual interference between sludge on different steps and with different water contents; by adopting a method in which the sludge climbs upward on the step area 7 and the sewage flows downward through the filter holes, the sludge and sewage can be effectively separated.

[0023] Furthermore, a plurality of scrapers 9 are provided on the upper surface of the top plate 8 .

[0024] In detail, the top plate 8 will drive multiple scrapers 9 to perform circular motion, and the scrapers 9 will push the dehydrated sludge to move synchronously, so as to facilitate the direct discharge of the sludge through the discharge channel 5. At the same time, the scrapers 9 can also scrape and clean the sludge adhering to the inner wall of the sludge collecting chamber 4, so as to avoid the accumulation of sludge in the sludge collecting chamber 4.

[0025] Furthermore, a vibration structure is provided at the bottom of the outer box 1, and the vibration structure is used to drive the drum 2 to vibrate in the vertical direction; The top plate 8 slides vertically in the mud collecting chamber 4 , and an auxiliary ring 10 is fixed to the bottom of the rotating drum 2 , and the bottom of the auxiliary ring 10 slides and extends to the bottom of the outer box body 1 .

[0026] In detail, by providing the auxiliary ring 10 , when the drum 2 vibrates, the auxiliary ring 10 and the outer box body 1 can slide relative to each other, thereby ensuring the sealing of the water collection chamber 3 .

[0027] By vibrating the drum 2, the sludge on the step area 7 is vibrated synchronously. Since the horizontal part of the step blocks the downward flow of the sludge, this vibration can help the sludge move upward to the adjacent step, thereby helping the sludge move upward step by step on the step area 7.

[0028] Furthermore, a collar 11 is provided at the middle position of the bottom of the drum 2, a plurality of push plates 12 are provided on the upper surface of the collar 11, a vertical cylinder 13 is slidably provided in the collar 11, a feed pipe 14 is provided at the bottom of the vertical cylinder 13, and the feed pipe 14 is used to transport sludge into the drum 2; The sleeve ring 11 and the rotating drum 2 rotate in the same direction and at a differential speed, and the top of the vertical cylinder 13 is always located in the sleeve ring 11 .

[0029] In detail, the positions of the feed pipe 14 and the vertical cylinder 13 are fixed, the ring 11 is rotatably mounted on the vertical cylinder 13, and the ring 11 and the vertical cylinder 13 can slide relative to each other in the vertical direction. The sludge can be discharged into the lower side of the inner part of the rotating drum 2 through the feed pipe 14, the vertical cylinder 13 and the ring 11. When the rotating drum 2 and the ring 11 rotate, the ring 11 will rotate relative to the vertical cylinder 13. When the rotating drum 2 and the ring 11 vibrate synchronously in the vertical direction, the ring 11 and the vertical cylinder 13 slide relative to each other.

[0030] Since the ring 11 and the drum 2 rotate in the same direction and at a differential speed, the ring 11 will push the sludge on the lower side of the drum 2 to perform centrifugal motion through the push plate 12, which makes it convenient for the sludge to be quickly put into a centrifugal rotation state and to quickly move away from the ring 11. At the same time, the push plate 12 will produce relative motion with the drum 2, so that the push plate 12 will synchronously scrape and clean the surface of the lower side of the drum 2 that is used to carry the sludge, thereby avoiding sludge deposition.

[0031] It should be pointed out that since the collar 11 and the vertical cylinder 13 move relative to each other in the vertical direction, and the sludge needs to be introduced into the rotating drum 2 through the vertical cylinder 13 and the collar 11, when the collar 11 vibrates on the vertical cylinder 13, the top of the vertical cylinder 13 needs to always be located in the collar 11 to achieve connectivity between the vertical cylinder 13 and the rotating drum 2.

[0032] Furthermore, an outer gear ring 15 is fixedly mounted on the outer wall of the vertical cylinder 13, and a plurality of transmission gears 16 are meshedly mounted on the outer gear ring 15. An inner gear ring 18 is mounted on the outer sides of the plurality of transmission gears 16, and the transmission gears 16 mesh with the inner gear ring 18. A support rod 17 is disposed on each transmission gear 16, and the transmission gear 16 rotates on the support rod 17, and the top of the support rod 17 is fixed to the bottom of the collar 11; A plurality of inserting plates 23 are vertically slidably inserted into the inner gear ring 18 , and the top of the inserting plates 23 is fixed to the bottom of the drum 2 .

[0033] In detail, when the inner gear ring 18 rotates, the inner gear ring 18 will drive the drum 2 to perform synchronous rotational motion through multiple plug plates 23, and the inner gear ring 18 will push the transmission gear 16 to roll on the outer gear ring 15, thereby causing the transmission gear 16 to perform a circular motion around the outer gear ring 15, and the transmission gear 16 drives the sleeve ring 11 to rotate through the support rod 17. At this time, the sleeve ring 11 and the drum 2 perform the same direction and differential motion.

[0034] When the drum 2 vibrates in the vertical direction, the insert plate 23 slides on the inner gear ring 18 .

[0035] Furthermore, the upper and lower sides of the inner circumferential wall of the inner gear ring 18 and the upper and lower sides of the outer circumferential wall of the outer gear ring 15 are provided with ribs, and the ribs are used to block the position of the transmission gear 16; The bottom of the support rod 17 vertically slides through the transmission gear 16 .

[0036] In detail, the outer gear ring 15, the transmission gear 16 and the inner gear ring 18 are connected to each other through the ribs, thereby achieving stable transmission and preventing them from disengaging from each other. When the drum 2 and the sleeve 11 vibrate, the sleeve 11 will drive the support rod 17 to slide on the transmission gear 16, thereby achieving stable operation of the equipment.

[0037] Furthermore, a supporting ring 19 is provided below the outer box body 1, and a plurality of slides 20 are provided on the supporting ring 19. The slides 20 slide on the supporting ring 19 around the axis of the vertical cylinder 13. A vibration gear 21 is rotatably provided on each slide 20. The plurality of vibration gears 21 are distributed around the axis of the vertical cylinder 13. The rotation axis of the vibration gear 21 is perpendicular to the axis of the vertical cylinder 13. An eccentric column 22 is eccentrically provided on the vibration gear 21, and the eccentric column 22 is rotatably connected to the plug plate 23. The upper surface of the support ring 19 is provided with an annular tooth area, and the vibration gear 21 meshes with the teeth in the tooth area.

[0038] In detail, when the drum 2 and the insert plate 23 perform circular motion, the insert plate 23 will push the vibration gear 21 to roll in the tooth area on the support ring 19 through the eccentric column 22. At this time, the vibration gear 21 will drive the slide 20 to slide in a circle on the support ring 19. Since the eccentric column 22 is eccentrically connected to the vibration gear 21, the eccentric column 22 will move up and down in the vertical direction. The eccentric column 22 pushes the insert plate 23 and the drum 2 to move up and down, thereby providing vibration power for the drum 2.

[0039] It should be pointed out here that when the eccentric column 22 is located at the lower side of the axis of the vibration gear 21, it is more difficult for the plug plate 23 to push the vibration gear 21 to rotate through the eccentric column 22. Therefore, a starting force can be provided for the rotation of the drum 2 at the beginning, or the initial position of the eccentric column 22 can be set on the upper side of the axis of the vibration gear 21. When the drum 2 and the plug plate 23 are in a rotating state, the eccentric column 22 and the vibration gear 21 can be smoothly rotated by relying on inertia. Of course, in order to ensure the smooth operation of the equipment, an auxiliary pushing structure can also be added between the vibration gear 21 and the slide seat 20 to help the vibration gear 21 in The position transition and the auxiliary pushing structure can adopt a traditional method of connecting a camshaft between the vibration gear 21 and the slide 20, and setting a spring structure on the slide 20. When the protruding position of the camshaft rotates to the spring position, the spring is compressed. When the protruding position passes the shortest distance between it and the spring, the spring generates an auxiliary thrust on the protruding position to help the vibration gear 21 rotate. In this way, when the eccentric column 22 is on the lower side of the axis of the vibration gear 21, a smooth transition of the rotational movement of the vibration gear 21 and the eccentric column 22 can be achieved. Other forms of auxiliary pushing structures are not described here.

[0040] Furthermore, the circumferential outer wall of the inner gear ring 18 is set as a conical area, the support ring 19 is provided with a motor 24, and the output end of the motor 24 is provided with a cone wheel 25, which is drivingly connected to the conical area of ​​the inner gear ring 18; Among them, a support leg 26 is provided on the outer wall of the outer box body 1, the support leg 26 and the support ring 19 are fixedly connected through a first support plate 27, the support ring 19 and the vertical cylinder 13 are fixedly connected through a second support plate 28, and the feed pipe 14 is fixed on the support ring 19.

[0041] In detail, the motor 24 can drive the inner gear ring 18 to rotate through the conical wheel 25, thereby providing power for the equipment. The support legs 26, the first support plate 27 and the second support plate 28 can provide overall support for the equipment, thereby ensuring stable operation of the equipment. The conical area of ​​the inner gear ring 18 can be in the form of bevel teeth, and the conical wheel 25 can also be a bevel gear.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A dewatering machine for cleaning river sludge, characterized in that: It comprises an outer box body (1) and a rotating drum (2) located inside the outer box body (1); The outer box body (1) is composed of a water collecting chamber (3) located at the lower side and a mud collecting chamber (4) located at the upper side; the water collecting chamber (3) and the mud collecting chamber (4) are connected; a discharge channel (5) is provided on the side wall of the mud collecting chamber (4); and a drainage channel (6) is provided at the bottom of the water collecting chamber (3); The side wall of the rotating drum (2) is configured as a stepped area (7), and the diameter of the stepped area (7) increases from bottom to top. The stepped area (7) on the rotating drum (2) is located in the water collecting chamber (3). A top plate (8) is provided on the top of the rotating drum (2), and the top plate (8) is located in the mud collecting chamber (4). The sludge is fed into the rotating drum (2) through the middle position of the bottom of the rotating drum (2), the horizontal part of each step of the stepped area (7) is used to carry the sludge, and the vertical part of each step is densely covered with filter holes.

2. A dewatering machine for cleaning river sludge according to claim 1, characterized in that: A plurality of scrapers (9) are provided on the upper surface of the top plate (8).

3. A dewatering machine for cleaning river sludge according to claim 2, characterized in that: A vibration structure is provided at the bottom of the outer box (1), and the vibration structure is used to drive the rotating drum (2) to vibrate in a vertical direction; The top plate (8) slides vertically in the mud collecting chamber (4); an auxiliary ring (10) is fixed to the bottom of the rotating drum (2); the bottom of the auxiliary ring (10) slides and extends to the bottom of the outer box body (1).

4. A dewatering machine for cleaning river sludge according to claim 3, characterized in that: A sleeve (11) is provided at the middle position of the bottom of the rotating drum (2), a plurality of push plates (12) are provided on the upper surface of the sleeve (11), a vertical cylinder (13) is slidably provided inside the sleeve (11), a feed pipe (14) is provided at the bottom of the vertical cylinder (13), and the feed pipe (14) is used to transport sludge into the rotating drum (2); The sleeve (11) and the rotating drum (2) rotate in the same direction but at a differential speed, and the top of the vertical drum (13) is always located inside the sleeve (11).

5. A dewatering machine for cleaning river sludge according to claim 4, characterized in that: An outer toothed ring (15) is fixedly mounted on the outer wall of the vertical cylinder (13), a plurality of transmission gears (16) are meshedly mounted on the outer toothed ring (15), an inner toothed ring (18) is mounted on the outer sides of the plurality of transmission gears (16), and the transmission gears (16) mesh with the inner toothed ring (18), each transmission gear (16) is provided with a support rod (17), the transmission gear (16) rotates on the support rod (17), and the top of the support rod (17) is fixed to the bottom of the collar (11); Wherein, a plurality of insert plates (23) are vertically slidably inserted into the inner gear ring (18), and the top of the insert plates (23) is fixed to the bottom of the rotating drum (2).

6. A dewatering machine for cleaning river sludge according to claim 5, characterized in that: The upper and lower sides of the inner circumferential wall of the inner gear ring (18) and the upper and lower sides of the outer circumferential wall of the outer gear ring (15) are provided with retaining edges, and the retaining edges are used to block the position of the transmission gear (16); Wherein, the bottom of the support rod (17) vertically slides through the transmission gear (16).

7. A dewatering machine for cleaning river sludge according to claim 6, characterized in that: A supporting ring (19) is arranged below the outer box body (1), and a plurality of slides (20) are arranged on the supporting ring (19). The slides (20) slide on the supporting ring (19) around the axis of the vertical cylinder (13). A vibration gear (21) is rotatably arranged on each slide (20). The plurality of vibration gears (21) are distributed around the axis of the vertical cylinder (13). The rotation axis of the vibration gear (21) is perpendicular to the axis of the vertical cylinder (13). An eccentric column (22) is eccentrically arranged on the vibration gear (21), and the eccentric column (22) is rotatably connected to the plug plate (23). The upper surface of the support ring (19) is provided with an annular tooth area, and the vibration gear (21) meshes with the teeth in the tooth area.

8. A dewatering machine for cleaning river sludge according to claim 7, characterized in that: The circumferential outer wall of the inner gear ring (18) is arranged as a conical area, the support ring (19) is provided with a motor (24), the output end of the motor (24) is provided with a cone wheel (25), and the cone wheel (25) is drivingly connected to the conical area of ​​the inner gear ring (18); A support leg (26) is provided on the outer wall of the outer box body (1); the support leg (26) is fixedly connected to the support ring (19) via a first support plate (27); the support ring (19) is fixedly connected to the vertical cylinder (13) via a second support plate (28); and the feed pipe (14) is fixed to the support ring (19).

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