Reservoir desilting device and method

Abstract

The invention discloses the related technical field of design silt treatment, and particularly relates to a reservoir desilting and desilting device and method.The reservoir desilting and desilting device comprises a base plate, a treatment box, a stirring barrel and a rotary conveying assembly, the stirring barrel and the rotary conveying assembly are arranged in the treatment box, a conveying pipe is arranged on the base plate to suck sand and silt, and the end of the stirring barrel is connected with the rotary conveying assembly in a matched mode; a drainage plate is connected to the outer wall of the stirring barrel, a conveying belt is arranged at the edge of the drainage plate, a baffle and a blocking filtering assembly are attached to one end of the rotary conveying assembly, one end of a water outlet pipe on the stirring barrel extends into an inner cavity of the rotary conveying assembly, and silt obtained after stirring treatment in the stirring barrel is discharged into the inner cavity of the rotary conveying assembly. The impurities contained in the sediment are filtered out by the blocking filtering assembly, the impurities at the filtering position rotate along with the rotating conveying assembly and are conveyed to the high position, then flow to the drainage plate from an inner cavity of the rotating conveying assembly and finally fall onto the conveying belt to be conveyed and collected, and the reservoir sediment discharging device can be conveniently used in the reservoir sediment discharging work.

Description

Technical Field

[0001] This invention relates to the technical field of sediment control, specifically a reservoir sediment removal and dredging device and method. Background Technology

[0002] During the long-term operation of rivers, reservoirs, and other water bodies, large amounts of silt, gravel, and debris gradually accumulate at the bottom, forming a silt layer that seriously affects the effective storage capacity, flood control safety, and ecological health of the reservoir. Existing reservoir dredging technologies mostly employ mechanical excavation, hydraulic flushing, or cutter suction dredging methods. While these can partially remove silt, they still have significant shortcomings in practical operation. For example, traditional dredging devices often struggle to effectively separate stones, branches, and other debris from the silt, leading to easy blockage of dredging pipes and severe equipment wear. Simultaneously, the dredging process is often accompanied by a sharp increase in water turbidity, causing secondary pollution to downstream water quality and ecosystems. Furthermore, existing devices primarily focus on silt removal, lacking the capacity for efficient classification and resource-based treatment of the removed materials. This results in dredging products being difficult to utilize directly, leading to high processing costs and low operational efficiency, thus limiting the large-scale application of sustainable reservoir dredging technologies. Therefore, there is an urgent need to develop a reservoir dredging and sediment removal device and corresponding methods that can efficiently separate impurities, reduce water disturbance, and take into account the classification and disposal of dredged materials, so as to improve the overall efficiency and environmental friendliness of dredging operations. Summary of the Invention

[0003] The purpose of this invention is to provide a reservoir sand removal and dredging device and method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A reservoir sediment removal and dredging device and method, comprising: A substrate, one end of which is equipped with a conveying pipe, a sludge pump is installed in the middle of the conveying pipe, an isolation mesh cylinder is installed at the bottom end of the conveying pipe, a processing box is provided in the middle of the substrate, and the top end of the conveying pipe faces the inlet of the processing box. A mixing tank is installed inside a processing box. The mixing tank is equipped with a mixing component for mixing mud and sand. One end of the mixing component extends outside the mixing tank and is connected to a driving component. A water inlet pipe and a water outlet pipe are respectively installed at both ends of the mixing tank. The water outlet pipe is inclined and a control valve is installed at the connection between the water outlet pipe and the mixing tank. A rotating transport assembly is installed inside the processing tank and located on one side of the mixing tank. One end of the rotating transport assembly is connected to one end of the mixing tank. The rotating transport assembly includes an outer cylinder and an inner cylinder installed inside the outer cylinder. The inner cylinder is coaxially arranged with the mixing assembly through a connector. The cavity between the outer cylinder and the inner cylinder is inclined. One end of the water outlet pipe extends into the cavity between the outer cylinder and the inner cylinder. A baffle and a baffle are fitted to the other end of the rotating transport assembly. A cleaning disc is provided on one side of the baffle and is located in the cavity between the outer cylinder and the inner cylinder. The baffle and the baffle include a sleeve plate and a mesh plate installed inside the sleeve plate. One end of both the outer cylinder and the inner cylinder abuts against the wall of the mesh plate. A transmission assembly is disposed at one end of the stirring assembly, and the cleaning disc is connected to the stirring assembly via the transmission assembly. A flow guide plate is installed on both sides of the outer wall of the mixing tank, and the flow guide plate is installed at an angle; The conveyor belt is positioned at the edge of the diversion plate. As a further aspect of the present invention: a plurality of partitions are connected between the outer cylinder and the inner cylinder, and one end of the stirring tank is disposed in the inner cavity of the inner cylinder, and the dimensions of the stirring tank are matched with the dimensions of the end of the inner cylinder.

[0005] As a further embodiment of the present invention: the stirring assembly includes a first stirring rod and a plurality of second stirring rods disposed around the first stirring rod, and a plurality of stirring blades disposed on the first stirring rod and the second stirring rods. The first stirring rod and the second stirring rod are respectively provided with a first driving gear and a first driven gear, and the first driving gear and the first driven gear are meshed and connected.

[0006] As a further embodiment of the present invention: the transmission assembly includes a connecting rod disposed on the baffle, a second driving gear disposed on the first stirring rod, a rotating rod disposed on one side of the baffle, and a fourth driven gear disposed at one end of the connecting rod. The two ends of the rotating rod are respectively connected to the second driven gear and the third driven gear, which are meshed with the second driving gear and the fourth driven gear, respectively. The other end of the connecting rod is connected to the cleaning disc.

[0007] As a further embodiment of the present invention: the inner wall of the water inlet pipe is provided with a plurality of locking blocks, a primary filter plate is provided on the locking blocks, and a lifting handle is provided on the primary filter plate.

[0008] As a further embodiment of the present invention: a sedimentation tank is provided at the port of the sleeve plate, a medicine storage tank is provided on one side of the sedimentation tank, the medicine storage tank is connected to the sedimentation tank through an infusion pipe, and an infusion pump is provided at the connection between the infusion pipe and the medicine storage tank.

[0009] A method for a reservoir sediment removal and dredging device includes the following steps: S1. Start the sludge pump 29. After the sludge containing impurities at the bottom of the reservoir is initially intercepted by the isolation net cylinder 30, it is pumped to the mixing tank 2 in the treatment tank 1 through the conveying pipe 28. S2. Inject clean water or flocculant solution into the mixing tank 2 through the water inlet pipe 6, and at the same time start the drive component 12 to drive the mixing assembly 3 to stir and mix the mud and sand, so that the mud and sand are fully separated from the impurities. S3. After stirring is complete, open the control valve 8 and discharge the mixture through the water outlet pipe 7 into the inclined cavity between the outer cylinder 902 and the inner cylinder 901 of the rotating transport component 9. S4. The mixture settles naturally and initially separates in the inclined cavity due to gravity. At the same time, the stirring component 3 drives the cleaning plate 24 to rotate through the transmission component 13 to clean the solid impurities deposited between the outer cylinder 902 and the inner cylinder 901 and prevent blockage. S5. The separated wastewater is further filtered through the mesh plate 402 of the filter assembly 4, and the filtered water enters the sedimentation tank 17. If deep treatment is required, the infusion pump 15 is started to inject the medicine in the medicine storage tank 14 into the sedimentation tank 17 through the infusion pipe 16 for flocculation and sedimentation. S6. Solid impurities and larger particles filtered out by the cleaning disc 24 are guided by the sleeve plate 401 and slide onto the conveyor belt 11 through the diversion plate 10. The conveyor belt 11 then transports them to the collection box 22 for centralized collection and subsequent treatment. S7. Periodically remove and clean the primary filter plate 19 inside the water inlet pipe 6 by pulling up handle 21 to keep the water inlet unobstructed.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: The device uses a conveying pipe, a mixing tank, a rotating transport component, a transmission component, a baffle, a blocking filter component, a diversion plate, and a conveyor belt to extract, transport, and mix sludge and separate impurities from it for collection. The mixing tank and the rotating transport component are driven by the same drive unit, and the mixing of sludge, separation of sludge and impurities, and transportation of separated impurities can all be carried out simultaneously, greatly improving the efficiency of sludge treatment. It can remove impurities from sludge before filtration, making it easy to install on a carrier ship and enabling flexible fixed-point dredging. It solves the shortcomings of existing solid waste sludge treatment equipment, such as low graded treatment efficiency, complex and inconvenient discharge, and large water disturbance. The overall equipment adopts a box-type structure design, which has high space utilization, is easy to operate, and has better performance. Attached Figure Description

[0011] Figure 1 This is a front view of the overall structure of an embodiment of the present invention.

[0012] Figure 2 This is a front view of the internal structure of an embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram showing the positional relationship and structure of the transmission components in an embodiment of the present invention.

[0014] Figure 4 This is a side view of the overall structure in an embodiment of the present invention.

[0015] Figure 5 This is a schematic diagram showing the positional relationship between the first driving gear and the first driven gear in an embodiment of the present invention.

[0016] Figure 6 This is a schematic diagram of the internal structure of the rotating transport component in an embodiment of the present invention.

[0017] Figure 7 This is a schematic diagram of the cleaning disk in an embodiment of the present invention.

[0018] The components include: 1. Processing tank; 2. Mixing tank; 3. Mixing assembly; 301. First mixing rod; 302. Mixing blade; 303. Second mixing rod; 304. First driving gear; 305. First driven gear; 4. Barrier filter assembly; 401. Sleeve plate; 402. Mesh plate; 5. Baffle plate; 6. Inlet pipe; 7. Outlet pipe; 8. Control valve; 9. Rotary transport assembly; 901. Inner cylinder; 902. Outer cylinder; 903. Baffle plate; 10. Diverter plate; 11. Conveyor belt; 12. Drive component; 13. Transmission assembly; 1301. Second main... 1302. Driven gear; 1303. Second driven gear; 1304. Rotating rod; 1305. Mounting bracket; 1306. Third driven gear; 1307. Fourth driving gear; 1308. Connecting rod; 14. Medicine storage tank; 15. Infusion pump; 16. Infusion tube; 17. Sedimentation tank; 18. Drain pipe; 19. Primary filter plate; 20. Locking block; 21. Lifting handle; 22. Collection box; 23. Connecting piece; 24. Cleaning disc; 25. Conducting shaft; 26. Support column; 27. Base plate; 28. Delivery pipe; 29. ​​Sludge pump; 30. Isolation mesh cylinder. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example 1: Please refer to Figures 1 to 7A reservoir sludge removal and dredging device includes a base plate 27. A conveying pipe 28 is installed at one end of the base plate 27, a sludge pump 29 is installed in the middle of the conveying pipe 28, and an isolation net cylinder 30 is installed at the bottom end of the conveying pipe 28. A processing box 1 is arranged in the middle of the base plate 27, with the top end of the conveying pipe 28 facing the inlet of the processing box 1. The processing box 1 is equipped with a mixing tank 2, a rotating transport assembly 9, a transmission assembly 13, a connecting assembly 23, a diversion plate 10, and a conveyor belt 11. The mixing tank 2 is installed in the inner cavity of the processing box 1 by a support column 3. A mixing assembly 3 for mixing and treating sludge is arranged inside the mixing tank 2. A driving component 12 is connected to one end of the mixing assembly 3. The driving component 12 can be selected as a servo motor or other type capable of driving the first agitator. The mixing rod 301 has rotating electrical components that facilitate start-stop control. The mixing tank 2 is horizontally positioned, with an inlet pipe 6 and an outlet pipe 7 located at its upper and lower ends, respectively. The outlet pipe 7 is inclined, and a control valve 8 is installed at the connection between the outlet pipe 7 and the mixing tank 2. The control valve 8 can be a solenoid valve or other valve-like component used to control the opening or closing of the outlet pipe 7. A rotating transport assembly 9 is located on one side of the mixing tank 2, with one end of the rotating transport assembly 9 connected to one end of the mixing tank 2. The rotating transport assembly 9 includes an outer cylinder 902 and an inner cylinder 901 disposed within the outer cylinder 902. The cavity between the outer cylinder 902 and the inner cylinder 901 is inclined, and one end of the outlet pipe 7 extends into the inner cavity between the outer cylinder 902 and the inner cylinder 901. The transmission component 13 is located at one end of the stirring component 3. The stirring component 3 is coaxially arranged with the inner cylinder 901 via the connector 23. The guide plate 10 is located on both sides of the outer wall of the stirring tank 2 and is inclined. The conveyor belt 11 is located at the edge of the guide plate 10. One end of the conveyor belt 11 extends to the outside of the processing tank 1 and is provided with a transmission shaft 25. The transmission shaft 25 can be connected to a chain belt, toothed belt, etc., provided outside the processing tank 1 to drive the conveyor belt 11. The other end of the rotating transport component 9 is fitted with a baffle filter component 4 and a baffle 5. A cleaning disc 24 is provided on one side of the baffle 5. The cleaning disc 24 is placed in the cavity between the outer cylinder and the inner cylinder. The driving component 12 can drive the stirring component 3 to stir the mud and sand in the stirring tank 2. In the mixing process, the drive unit 12, while driving the mixing assembly 3 to perform mixing operations, simultaneously drives the rotating transport assembly 9 and the cleaning disc 24 to rotate via the connecting member 23 and the transmission assembly 13. The blocking filter assembly 4 filters out impurities in the mud and sand discharged into the rotating transport assembly 9, allowing only mud and sand to pass through. The filtered impurities are transported in the cavity between the inner cylinder 901 and the outer cylinder 902 as the rotating transport assembly 9 rotates, and then discharged to the guide plate 10 under the action of the rotating transport assembly 9 and fall onto the conveyor belt 11, moving with the conveyor belt 11. A collection box 22 is provided on one side of the processing box 1, below the end of the conveyor belt 11. The impurities on the conveyor belt 11 are finally transported by the conveyor belt 11 and fall into the collection box 22 for collection.The lengths of the diversion plate 10 and the conveyor belt 11 are both greater than the length of the mixing tank 2, so that the conveyor belt 11 extends to the outside of the processing box 1 for discharge.

[0022] Please see Figure 2 , 3 The stirring assembly 3 includes a first stirring rod 301, a plurality of second stirring rods 303 disposed around the first stirring rod 301, and a plurality of stirring blades 302 disposed on the first stirring rod 301 and the second stirring rod 303. The stirring blades 302 on the first stirring rod 301 and the second stirring rod 303 are arranged alternately. The first stirring rod 301 and the second stirring rod 303 are respectively provided with a first driving gear 1301 and a first driven gear 1302. The first driving gear 1301 and the first driven gear 1302 are meshed and connected. One end of the first stirring rod 301 extends outside the stirring tank 2 and is connected to the driving component 12 disposed inside the processing box 1.

[0023] Please see Figure 2 , 5 In this embodiment, the second stirring rods 303 are symmetrically distributed around the first stirring rod 301. When the first stirring rod 301 rotates, it will drive several second stirring rods 303 to rotate in the opposite direction to the first stirring rod 301 through the cooperation of the first driving gear 1301 and the first driven gear 1302, thereby improving the stirring effect on the mud and sand.

[0024] See Figure 1 , 2 3, 6. Based on Embodiment 1, the rotating transport assembly 9 is composed of a cylindrical structure with inclined cylindrical walls. A number of partitions 903 are connected between the outer cylinder 902 and the inner cylinder 901. The length of the conveying partitions 903 is less than the length of the outer cylinder 902 and the inner cylinder 901 to ensure that the partitions 903 will not touch the water outlet pipe 7 when rotating with the first stirring rod 301, thus ensuring that the water outlet pipe 7 conveys mud and sand to the inner cavity of the rotating transport assembly 9. One end of the stirring tank 2 is set in the inner cavity of the inner cylinder 901. The size of the stirring tank 2 matches the size of the end of the inner cylinder 901. The end of the inner cylinder 901 abuts against the outer wall of the stirring tank 2.

[0025] For preferred options, please refer to [link / reference]. Figure 3 , 6The blocking filter assembly 4 includes a sleeve plate 401 and a mesh plate 402 disposed inside the sleeve plate 401. One end of the outer cylinder 902 and the inner cylinder 901 abuts against the wall of the mesh plate 402 to improve the sealing performance of the connection between the overall rotating transport assembly 9 and the baffle 5 and the blocking filter assembly 4. In this embodiment, the inner cylinder 901 and the outer cylinder 902 can be made of smooth plastic plate or metal plate with electroplated and polished surface. The surface of the mesh plate 402 is sprayed with a waterproof and smooth coating to prevent impurities from remaining on the inner wall of the outer cylinder 902 and the outer wall of the inner cylinder 901.

[0026] Please see Figure 3 When impurities inside the rotating transport component 9 move to the position above the mixing tank 2 as the rotating transport component 9 rotates, the cleaning disc 24 is set to ensure that the impurities inside the rotating transport component 9 are discharged more thoroughly. The transmission component 13 includes a connecting rod 1307 set on the baffle, a second driving gear 1301 set on the first stirring rod 301, a rotating rod 1303 set on one side of the baffle 5 via a mounting bracket 1304, and a fourth driven gear 1306 set at the other end of the connecting rod 1307. The two ends of the rotating rod 1303 are respectively The device is connected to a second driven gear 1302 and a third driven gear 1305. The second driven gear 1302 and the third driven gear 1305 are respectively meshed with the second driving gear 1301 and the fourth driven gear 1306. The cleaning disc 24 is connected to the connecting rod 1307. The outer wall of the cleaning disc 24 abuts against the inner wall of the outer cylinder 902 and the outer wall of the inner cylinder 901. The cleaning disc 24 is driven to rotate by the transmission assembly 13. The rotation of the cleaning disc 24 cleans the end of the rotating transport assembly 9, ensuring that impurities are discharged downwards better.

[0027] Example 2: See Figure 2 Based on Embodiments 1 and 2, a plurality of locking blocks 20 are provided on the inner wall of the water inlet pipe 6. A primary filter plate 19 is provided on the locking block 20. A lifting handle 21 is provided on the primary filter plate 19. The length of the primary filter plate 19 is greater than the diameter of the rotating transport component 9. The primary filter plate 19 has a large filtration pore size. The primary filter plate 19 is used to filter out hard impurities with a size larger than the gap between a plurality of stirring blades 302, so as to ensure that the first stirring rod 301 and the second stirring rod 303 can work normally.

[0028] Please see Figure 1To further enhance the treatment effect of silt, a sedimentation tank 17 is provided at the port of the sleeve plate 401. A chemical storage tank 14 is provided on one side of the sedimentation tank 17. A drain pipe 18 is provided at the bottom of the sedimentation tank 17. The chemical storage tank 14 is connected to the sedimentation tank 17 through an infusion pipe 16. An infusion pump 15 is provided at the connection between the infusion pipe 16 and the chemical storage tank 14. Flocculants and other silt sedimentation agents can be added to the chemical storage tank 14. With the help of the infusion pump 15, an appropriate amount of flocculant is delivered to the sedimentation tank 17 to achieve the sedimentation treatment of silt.

[0029] A method for dredging and removing sediment from a reservoir includes the following steps: S1. Start the sludge pump 29. After the sludge containing impurities at the bottom of the reservoir is initially intercepted by the isolation net cylinder 30, it is pumped to the mixing tank 2 in the treatment tank 1 through the conveying pipe 28. S2. Inject clean water or flocculant solution into the mixing tank 2 through the water inlet pipe 6, and at the same time start the drive component 12 to drive the mixing assembly 3 to stir and mix the mud and sand, so that the mud and sand are fully separated from the impurities. S3. After stirring is complete, open the control valve 8 and discharge the mixture through the water outlet pipe 7 into the inclined cavity between the outer cylinder 902 and the inner cylinder 901 of the rotating transport component 9. S4. The mixture settles naturally and initially separates in the inclined cavity due to gravity. At the same time, the stirring component 3 drives the cleaning plate 24 to rotate through the transmission component 13 to clean the solid impurities deposited between the outer cylinder 902 and the inner cylinder 901 and prevent blockage. S5. The separated wastewater is further filtered through the mesh plate 402 of the filter assembly 4, and the filtered water enters the sedimentation tank 17. If deep treatment is required, the infusion pump 15 is started to inject the medicine in the medicine storage tank 14 into the sedimentation tank 17 through the infusion pipe 16 for flocculation and sedimentation. S6. Solid impurities and larger particles filtered out by the cleaning disc 24 are guided by the sleeve plate 401 and slide onto the conveyor belt 11 through the diversion plate 10. The conveyor belt 11 then transports them to the collection box 22 for centralized collection and subsequent treatment. S7. Periodically remove and clean the primary filter plate 19 inside the water inlet pipe 6 by pulling up handle 21 to keep the water inlet unobstructed.

[0030] Working principle: When in use, the base plate 27 is installed at the stern of the carrier vessel, and the bottom of the conveying pipe 28 extends into the bottom of the reservoir. The silt pump 29 is started, and the silt containing impurities at the bottom of the reservoir is initially intercepted by the isolation net cylinder 30. After large-volume debris, it is pumped through the conveying pipe 28 to the mixing tank 2 inside the processing tank 1. An appropriate amount of silt is injected into the mixing tank 2 through the inlet pipe 6. Then, the drive unit 12 is started to rotate the first stirring rod 301. The first stirring rod 301, in conjunction with the transmission component 13, drives the second stirring rod 303 and the rotating transport component 9 to rotate, thereby stirring the silt in the mixing tank 2. This stirring process separates the sand and gravel from the silt and evens out the silt. After a period of time, the control valve 8 is opened, and the silt is drained through the drain pipe 18 to the rotating transport component 9. The inner cavity of the conveying component 9 is filled with mud and sand. The inner cavity of the lower half of the rotating conveying component 9 is inclined towards the direction of the filter component 4. The mud and sand flow with the impurities to the screen plate 402. The mud and sand pass through the screen plate 402 and are discharged downward into the sedimentation tank 17. The impurities are filtered down by the screen plate 402 and are driven by the partition plate 903 to rotate with the conveying component until they move to the position above the mixing tank 2. The inner cavity of the upper half of the rotating conveying component is inclined towards the outer wall of the mixing tank 2. The impurities transported to the upper part of the rotating conveying component will slide down and be discharged from the port of the rotating conveying component to the outer wall of the mixing tank 2. Then they fall down onto the guide plate 10, and then fall onto the conveyor belt 11 through the guide plate 10 and are transported to the outside of the processing tank 1 along with the conveyor belt 11. Finally, they fall into the collection tank 22 to complete the collection.

Claims

1. A reservoir sediment removal and dredging device, characterized in that, include: A substrate (27) is provided with a conveying pipe (28) at one end, a sludge pump (29) is provided in the middle of the conveying pipe (28), an isolation net cylinder (30) is provided at the bottom end of the conveying pipe (28), a processing box (1) is provided in the middle of the substrate (27), and the top end of the conveying pipe (28) faces the inlet of the processing box (1). A mixing tank (2) is set inside the processing box (1). The mixing tank (2) is equipped with a mixing component (3) for mixing and processing mud and sand. One end of the mixing component (3) extends outside the mixing tank (2) and is connected to a drive component (12). The two ends of the mixing tank (2) are respectively provided with a water inlet pipe (6) and a water outlet pipe (7). The water outlet pipe (7) is inclined. A control valve (8) is provided at the connection between the water outlet pipe (7) and the mixing tank (2). A rotating transport assembly (9) is installed inside the processing tank (1) and located on one side of the mixing tank (2). One end of the rotating transport assembly (9) is connected to one end of the mixing tank (2). The rotating transport assembly (9) includes an outer cylinder (902) and an inner cylinder (901) installed inside the outer cylinder (902). The inner cylinder (901) is coaxially arranged with the mixing assembly (3) through a connector (23). The cavity between the outer cylinder (902) and the inner cylinder (901) is inclined. One end of the water outlet pipe (7) extends to the outer cylinder (902). The cavity between the outer cylinder (902) and the inner cylinder (901) is provided with a blocking filter assembly (4) and a baffle (5) attached to the other end of the rotating transport assembly (9). A cleaning disc (24) is provided on one side of the baffle (5). The cleaning disc (24) is placed in the cavity between the outer cylinder (902) and the inner cylinder (901). The blocking filter assembly (4) includes a sleeve plate (401) and a mesh plate (402) arranged inside the sleeve plate (401). One end of the outer cylinder (902) and the inner cylinder (901) abuts against the wall of the mesh plate (402). A transmission assembly (13) is provided at one end of the stirring assembly (3), and the cleaning disc (24) is connected to the stirring assembly (3) via the transmission assembly (13); A flow guide plate (10) is provided on both sides of the outer wall of the mixing tank (2), and the flow guide plate (10) is inclined. The conveyor belt (11) is located at the edge of the diversion plate (10).

2. The reservoir sediment removal and dredging device according to claim 1, characterized in that, The outer cylinder (902) and the inner cylinder (901) are connected by several partitions (903). One end of the stirring tank (2) is set in the inner cavity of the inner cylinder (901), and the size of the stirring tank (2) matches the size of the end of the inner cylinder (901).

3. The reservoir sediment removal and dredging device according to claim 1, characterized in that, The stirring assembly (3) includes a first stirring rod (301), a plurality of second stirring rods (303) disposed around the first stirring rod (301), and a plurality of stirring blades (302) disposed on the first stirring rod (301) and the second stirring rods (303). A first driving gear (304) and a first driven gear (305) are respectively disposed on the first stirring rod (301) and the second stirring rod (303), and the first driving gear (304) and the first driven gear (305) are meshed and connected.

4. The reservoir sediment removal and dredging device according to claim 3, characterized in that, The stirring blades (302) on the first stirring rod (301) and the stirring blades (302) on the second stirring rod (303) are arranged alternately.

5. A reservoir sediment removal and dredging device according to claim 3, characterized in that, The transmission assembly (13) includes a connecting rod (1307) disposed on the baffle (5), a second drive gear (1301) disposed on the first stirring rod (301), a rotating rod (1303) disposed on one side of the baffle (5), and a fourth drive gear (1306) disposed at one end of the connecting rod (1307). The two ends of the rotating rod (1303) are respectively connected to a second driven gear (1302) and a third driven gear (1305). The second driven gear (1302) and the third driven gear (1305) are respectively meshed with the second drive gear (1301) and the fourth drive gear (1306). The other end of the connecting rod (1307) is connected to the cleaning disc (24).

6. The reservoir sediment removal and dredging device according to claim 1, characterized in that, The inner wall of the water inlet pipe (6) is provided with several clamping blocks (20), and a primary filter plate (19) is provided on the clamping blocks (20).

7. A reservoir sediment removal and dredging device according to claim 6, characterized in that, The length of the primary filter plate (19) is greater than the diameter of the rotating transport assembly (9), and a lifting handle (21) is provided on the primary filter plate (19).

8. A reservoir sediment removal and dredging device according to claim 1, characterized in that, A sedimentation tank (17) is provided at the port of the sleeve (401), and a medicine storage tank (14) is provided on one side of the sedimentation tank (17). The medicine storage tank (14) is connected to the sedimentation tank (17) through an infusion pipe (16), and an infusion pump (15) is provided at the connection between the infusion pipe (16) and the medicine storage tank (14).

9. A reservoir sediment removal and dredging device according to claim 1, characterized in that, The length of the diversion plate (10) and the length of the conveyor belt (11) are both greater than the length of the mixing tank (2).

10. A method for dredging and removing sediment from a reservoir according to claim 9, characterized in that, Includes the following steps: S1. Start the sludge pump (29) to initially intercept large-volume debris from the bottom of the reservoir through the isolation net cylinder (30), and then pump it through the conveying pipe (28) to the mixing tank (2) in the treatment box (1); S2. Inject clean water or flocculant solution into the mixing tank (2) through the water inlet pipe (6), and at the same time start the drive unit (12) to drive the mixing assembly (3) to stir and mix the mud and sand, so that the mud and sand are fully separated from the impurities. S3. After stirring, open the control valve (8) and discharge the mixture through the water outlet pipe (7) into the inclined cavity between the outer cylinder (902) and the inner cylinder (901) of the rotating transport component (9); S4. The mixture settles naturally and separates initially in the inclined cavity due to gravity. At the same time, the stirring component (3) drives the cleaning plate (24) to rotate through the transmission component (13) to clean the solid impurities deposited between the outer cylinder (902) and the inner cylinder (901) to prevent blockage. S5. The separated wastewater is further filtered through the mesh plate (402) of the filter assembly (4), and the filtered water enters the sedimentation tank (17). If deep treatment is required, the infusion pump (15) is started to inject the medicine in the storage tank (14) into the sedimentation tank (17) through the infusion pipe (16) for flocculation and sedimentation. S6. Solid impurities and larger particles filtered out by the cleaning disc (24) are guided by the sleeve plate (401) and slide down onto the conveyor belt (11) through the diversion plate (10), and are then transported by the conveyor belt (11) to the collection box (22) for centralized collection and subsequent treatment. S7. Periodically remove and clean the primary filter plate (19) inside the inlet pipe (6) by pulling the handle (21) to keep the water inlet unobstructed.

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