A water conservancy project dredging device and a dredging method

Abstract

The application discloses a water conservancy project dredging device and a dredging method. The device comprises a working box, an extrusion assembly and a sealing assembly are arranged in the working box, the extrusion assembly comprises a movable extrusion plate arranged in the working box, fixed plates are arranged on both sides of the working box, filter bags are arranged between the two fixed plates and the extrusion plate, the sealing assembly comprises mounting seats fixedly connected to the outer surface of the extrusion plate, sealing springs are fixedly connected to the top of the two mounting seats, and sealing plates are fixedly connected to the ends of the two sealing springs away from the extrusion plate. The filter bags, the extrusion plate and the mounting plate are used for collecting and extruding the cleaned sludge, the water and nutrients in the sludge are extruded and backflowed, the opening and closing of the sludge outlet can be controlled through the sealing assembly, and the extruded sludge in the filter bags can be discharged for subsequent treatment.

Description

Technical Field

[0001] This invention relates to the field of dredging equipment technology, specifically to a dredging device and method for water conservancy projects. Background Technology

[0002] Water conservancy projects are engineering projects constructed to control and regulate surface water and groundwater in nature to achieve the goals of preventing harm and promoting benefits; they are also known as water engineering. Water is a precious resource essential for human production and life, but its natural state does not fully meet human needs. The construction of water conservancy projects can control water flow, prevent floods, regulate and distribute surface water and groundwater, and meet the needs of people's lives and production. Water conservancy projects typically require the use of dredging equipment to remove silt and other impurities from pipes, manholes, or river channels.

[0003] In rivers and canals, dams are typically installed inside the canals to raise water levels or regulate flow. During river flow, silt flows with the water and settles at the dam's inlet. This silt accumulation increases the pressure on the dam, affecting its normal operation and lifespan. Installing dredging devices at the dam's inlet removes the accumulated silt, reducing the pressure on the dam and extending its lifespan.

[0004] Existing dredging devices use a suction pipe to extract silt from the bottom of the water. Because the suction pipe is fixed in position within the water, the device can only remove silt near the pipe opening, making it difficult to clean silt further away. Furthermore, during the silt removal process, the device sucks out both water and silt, affecting subsequent silt removal and causing the discharge of nutrients from the silt and water, thus impacting the river's ecological environment. Therefore, this invention proposes a dredging device and method for water conservancy projects. Summary of the Invention

[0005] Technical problems to be solved

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a dredging device and dredging method for water conservancy projects, which can effectively solve the problems of poor dredging effect, inconvenience in treating silt and easy discharge of nutrients in the existing dredging devices.

[0007] Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention provides a dredging device and method for water conservancy projects, including a working box, a dredging pump fixedly connected to the top front side of the working box by a fixing rod, and a dredging pipe and a discharge pipe fixedly connected to the dredging port and discharge port of the dredging pump, respectively. The working box is characterized in that: the inside of the working box is provided with a squeezing component and a sealing component, and the outside of the working box is provided with a dredging suction component, a crushing component and a discharge component.

[0010] The extrusion assembly includes a movable extrusion plate located inside the working box. Fixed plates are fixedly connected to both sides inside the working box. Filter bags are provided between the two fixed plates and the extrusion plate. A discharge port is provided on one side surface of each of the two filter bags. An opening is provided on the top of each of the two filter bags. The two sides of the top of the filter bags are fixedly connected to the mounting base and the top of the fixed plate, respectively.

[0011] The sealing assembly includes a mounting base fixedly connected to the outer surface of the extrusion plate, and there are two mounting bases. A sealing spring is fixedly connected to the top and bottom of each of the two mounting bases. A sealing plate is fixedly connected to the end of each pair of sealing springs away from the extrusion plate. The two outlets are respectively located between the two mounting bases and the sealing plates. Limiting rods are fixedly connected to the top and bottom of the two fixed plates. The two mounting bases, the sealing plate and the extrusion plate are movably connected to the circumferential surfaces of the two limiting rods.

[0012] Preferably, the sludge suction assembly includes a rotating rod rotatably connected to the top of one side surface of the working box, a rotating plate fixedly connected to the end of the rotating rod away from the working box, a movable plate movably connected to the outer side of the rotating plate, the sludge suction pipe being located away from the sludge suction pump on one side surface of the movable plate, a slider fixedly connected to the top of the movable plate, a groove being formed inside the rotating plate, and the slider being slidably connected inside the groove.

[0013] Preferably, a motor is fixedly connected to the top of the working box near the rotating plate. The output shaft of the motor is driven by a rotating shaft via a coupling. A double-layer half gear is fixedly connected to the circumferential surface of the rotating shaft. A driven gear is fixedly connected to the circumferential surface of the rotating rod, and the driven gear meshes with the front side of the double-layer half gear. A reset plate is fixedly connected to the top of one side surface of the working box. A reset spring is fixedly connected to the surface of the reset plate near the movable plate, and the end of the reset spring away from the reset plate is fixedly connected to the outer surface of the movable plate. The end of the rotating shaft away from the motor is driven by the impeller shaft of the sludge pump via a coupling.

[0014] Preferably, the crushing assembly includes a lifting plate slidably connected to the movable plate near the surface of the working box, a crushing plate fixedly connected to the end of the lifting plate away from the working box, a crushing cone fixedly connected to the surface of the crushing plate away from the lifting plate, a leakage hole opened on the surface of the crushing plate, and a limit ring fixedly connected to the surface of the movable plate near the working box, and multiple limit rings are provided and all sleeved on the outside of the lifting plate.

[0015] Preferably, an arc-shaped toothed ring is fixedly connected to the middle of one side surface of the working box, a crank rod is rotatably connected to the top of the movable plate near the surface of the working box, a linkage gear is fixedly connected to the circumferential surface of the crank rod away from the movable plate, and the linkage gear meshes with the arc-shaped toothed ring, a connecting plate is rotatably connected to the circumferential surface of the crank rod, and the end of the connecting plate away from the crank rod is rotatably connected to the end of the lifting plate near the crank rod, an arc-shaped groove is opened in the middle of one side surface of the working box, and the end of the crank rod away from the movable plate is movably connected inside the arc-shaped groove.

[0016] Preferably, the sludge removal assembly includes mounting plates fixedly connected to both sides of the top of the working box, mounting rods fixedly connected between two mounting plates, and four mounting rods are provided. A transmission gear plate is movably connected to the circumferential surface of every two mounting rods. A connecting plate is fixedly connected to one side surface of the two mounting plates. A transmission gear is rotatably connected to one side surface of the connecting plate, and the transmission gear meshes with the two transmission gear plates. A movable plate is fixedly connected to one side surface of the upper transmission gear plate. The end of the sludge removal pipe away from the sludge pump is fixedly connected to the end of the movable plate away from the transmission gear plate. The lower transmission gear plate is fixedly connected to the top of the extrusion plate.

[0017] Preferably, a limiting seat is fixedly connected to one side of the top of the working box, and a limiting spring is fixedly connected to the inner top wall of the limiting seat. There are six limiting springs, and a limiting plate is fixedly connected to the lower end of every three limiting springs. A lifting block and a limiting block are fixedly connected to both sides of the lower surface of the two limiting plates, and the lower ends of the lifting block and the limiting block penetrate through the bottom of the limiting seat and extend to the outside of the limiting seat. A limiting groove is opened on the top of both sealing plates, and the limiting groove corresponds to the limiting block.

[0018] Preferably, a connecting block is fixedly connected to the top of the extrusion plate near the surface of the movable plate, and the end of the connecting block away from the extrusion plate penetrates the side wall of the working box and extends to the outside of the working box. An annular toothed plate is fixedly connected to the end of the connecting block away from the extrusion plate, and the annular toothed plate is movably sleeved on the outside of the double-layer half gear. The annular toothed plate meshes with the rear side of the double-layer half gear. Feed hoppers are fixedly connected to both sides of the upper surface of the working box, and the two feed hoppers correspond to the positions of the two filter bags respectively. A filter plate is fixedly connected to the bottom of the working box. Inclined hoppers are fixedly connected to both sides of the bottom of the other side surface of the working box, and the two inclined hoppers correspond to the positions of the two discharge ports respectively.

[0019] A dredging method for a dredging device in a water conservancy project includes the following steps:

[0020] S1. The work box is installed above the water inlet of the dam using a mounting frame, and the bottoms of the suction component and the crushing component are both located at the bottom of the water. The crushing component breaks up the silt that has clumped at the bottom of the water, making it easier for the suction component to clean the silt afterward.

[0021] S2. The sludge is pumped into the filter bag for collection by the sludge pump and the sludge pumping pipe and the sludge discharge pipe. The squeezing plate moves and works with the fixed plate to squeeze and filter the sludge inside the filter bag.

[0022] S3. The movable extrusion plate, in conjunction with the sealing assembly, can open the outlet, allowing the sludge squeezed inside the filter bag to be discharged for subsequent processing.

[0023] S4. During the movement of the extrusion plate, the sludge discharge component can be used to adjust the position of the sludge discharge and the filter bag used, thereby improving the sludge treatment effect of the sludge removal device.

[0024] Beneficial effects

[0025] The technical solution provided by this invention has the following advantages compared with known public technologies:

[0026] 1. This invention uses a filter bag placed between a squeezing plate and a fixing plate, allowing the sludge sucked up by the dredging device to be collected inside the filter bag. By moving the squeezing plate in conjunction with the fixing plate, the filter bag and the sludge inside are squeezed, expelling water and nutrients from the sludge and returning them to the river. This facilitates subsequent sludge treatment and prevents the loss of nutrients from the river water, which could negatively impact the ecological environment. During the movement of the squeezing plate, the opening and closing of the sludge outlet can be controlled by a sealing component, facilitating the discharge of the squeezed sludge from the filter bag for subsequent treatment.

[0027] 2. This invention, by setting a rotating rod, a rotating plate, and a movable plate to rotate, can drive the bottom of the sludge suction pipe to rotate, increasing the cleaning range of the sludge removal device and thus improving the sludge removal effect. During the rotation of the movable plate, the crank rod, linkage gear, and arc-shaped toothed ring can drive the movable plate to rise and fall, avoiding large rise and fall of the bottom of the sludge suction pipe during rotation. Furthermore, the linkage gear and arc-shaped toothed ring can drive the crank rod to rotate, which, in conjunction with the connecting rotating plate and the lifting plate, can drive the crushing plate and crushing nails to rise and fall to crush the clumps of sludge, facilitating the cleaning of the sludge by the sludge removal device and improving the sludge removal effect.

[0028] 3. This invention uses a movable plate mounted on a transmission toothed plate to install the discharge pipe. When the extrusion plate moves, it can drive the lower transmission toothed plate to move. In conjunction with the transmission gear, it can drive the upper transmission toothed plate, the movable plate, and the discharge pipe to move, changing the position of the discharge pipe so that the sucked-out sludge enters different filter bags for collection. By using two filter bags alternately, the working efficiency of the sludge extrusion treatment device can be improved. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0032] Figure 3 This is a right-section perspective view of the present invention;

[0033] Figure 4 This is a cross-sectional three-dimensional structural diagram of the sealing component in this invention;

[0034] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle;

[0035] Figure 6 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0036] Figure 7 This is a three-dimensional structural diagram of the extrusion assembly and sealing assembly in this invention.

[0037] The labels in the diagram represent: 1. Working box; 2. Rotating rod; 3. Rotating plate; 4. Movable plate; 5. Driven gear; 6. Motor; 7. Rotating shaft; 8. Double-layer half gear; 9. Sludge pump; 10. Sludge suction pipe; 11. Crankshaft; 12. Linkage gear; 13. Arc-shaped gear ring; 14. Connecting rotating plate; 15. Lifting plate; 16. Crushing plate; 17. Crushing cone; 18. Annular gear plate; 19. Squeezing plate; 20. Fixing plate; 21. Filter bag; 22. Sludge outlet; 23. Mounting base; 24. Sealing spring; 25. Sealing... 26. Sealing plate; 27. Limiting rod; 28. Limiting seat; 29. ​​Limiting spring; 30. Limiting plate; 31. Lifting block; 32. Limiting block; 33. Limiting groove; 34. Mounting plate; 35. Mounting rod; 36. Transmission gear plate; 37. Connecting plate; 38. Transmission gear; 39. Moving plate; 40. Sludge discharge pipe; 41. Feed hopper; 42. Filter plate; 43. Tilting hopper; 44. Reset plate; 45. Reset spring; 46. Sludge suction assembly; 47. Crushing assembly; 48. Extrusion assembly; 49. Sealing assembly; 40. Sludge discharge assembly. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] refer to Figure 1-7 A dredging device and method for water conservancy projects includes a working box 1, a dredging pump 9 fixedly connected to the top front side of the working box 1 by a fixing rod, and a dredging pipe 10 and a dredging pipe 39 fixedly connected to the dredging port and the dredging outlet of the dredging pump 9, respectively. The working box 1 is characterized in that: the inside of the working box 1 is provided with a squeezing component 47 and a sealing component 48, and the outside of the working box 1 is provided with a dredging suction component 45, a crushing component 46 and a dredging outlet component 49.

[0040] Specifically, the sludge suction assembly 45 includes a rotating rod 2 rotatably connected to the top of one side surface of the working box 1. A rotating plate 3 is fixedly connected to the end of the rotating rod 2 away from the working box 1. A movable plate 4 is movably connected to the outer side of the rotating plate 3. The sludge suction pipe 10 is positioned away from the sludge suction pump 9 on one side surface of the movable plate 4. The movable plate 4 and the sludge suction pipe 10 are installed by the rotating rod 2 in conjunction with the rotating plate 3, allowing the movable plate 4 and the sludge suction pipe 10 to swing and extend. The sludge suction pump 9, in conjunction with the sludge suction pipe 10, can remove sludge from the bottom of the water. A slider is fixedly connected to the top of the movable plate 4. A groove is opened inside the rotating plate 3, and the slider is slidably connected inside the groove. The slider and the groove can restrict the position of the movable plate 4, increasing the stability of the movable plate 4 during use. A motor 6 is fixedly connected to the top of the working box 1 near the rotating plate 3. The output shaft of the motor 6 is connected via a coupling. The device is connected to a rotating shaft 7, with a double-layer half gear 8 fixedly connected to its circumferential surface. A driven gear 5 is fixedly connected to the circumferential surface of the rotating rod 2, and the driven gear 5 meshes with the front side of the double-layer half gear 8, enabling the motor 6 to work and drive the rotating shaft 7 and the double-layer half gear 8 to rotate. In conjunction with the driven gear 5, the rotating rod 2 can be driven to rotate. A reset plate 43 is fixedly connected to the top of one side surface of the working box 1. A reset spring 44 is fixedly connected to the surface of the reset plate 43 near the movable plate 4, and the end of the reset spring 44 away from the reset plate 43 is fixedly connected to the outer surface of the movable plate 4. The end of the rotating shaft 7 away from the motor 6 is connected to the impeller shaft of the sludge pump 9 via a coupling. When the driven gear 5 separates from the double-layer half gear 8, the elastic force of the reset spring 44, in conjunction with the reset plate 43, can drive the movable plate 4 to swing and reset, thereby causing the movable plate 4 to swing back and forth.

[0041] Furthermore, the crushing assembly 46 includes a lifting plate 15 slidably connected to the surface of the movable plate 4 near the working box 1. A crushing plate 16 is fixedly connected to the end of the lifting plate 15 away from the working box 1. A crushing cone 17 is fixedly connected to the surface of the crushing plate 16 away from the lifting plate 15. The surface of the crushing plate 16 has perforations. During the reciprocating swing of the movable plate 4, the lifting plate 15 can be driven to swing back and forth. The lifting plate 15 drives the crushing plate 16 and the crushing cone 17 to rise and fall, crushing the clumps of sludge to facilitate subsequent sludge cleaning. A limiting ring is fixedly connected to the surface of the movable plate 4 near the working box 1, and multiple limiting rings are provided, all sleeved on the outside of the lifting plate 15. The limiting rings can restrict the position of the lifting plate 15, increasing the stability of the lifting plate 15 during use. An arc-shaped toothed ring 13 is fixedly connected to the middle of one side surface of the working box 1. The top of the movable plate 4 near the surface of the working box 1 is rotated. A crank rod 11 is connected to the circumference of the crank rod 11, and a linkage gear 12 is fixedly connected to the circumference of the crank rod 11 away from the movable plate 4. The linkage gear 12 meshes with the arc-shaped gear ring 13. A connecting plate 14 is rotatably connected to the circumference of the crank rod 11. The end of the connecting plate 14 away from the crank rod 11 is rotatably connected to the end of the lifting plate 15 near the crank rod 11. An arc-shaped groove is opened in the middle of one side surface of the working box 1, and the end of the crank rod 11 away from the movable plate 4 is movably connected inside the arc-shaped groove. During the reciprocating swing of the movable plate 4, the arc-shaped gear ring 13 enables the movable plate 4 to extend and retract, so that the change in distance between the bottom of the movable plate 4 and the bottom of the water is small, which improves the cleaning effect of the dredging device on the silt. The arc-shaped gear ring 13, in conjunction with the linkage gear 12, can drive the crank rod 11 to rotate back and forth, and the connecting plate 14 can drive the lifting plate 15 to move back and forth.

[0042] Furthermore, the sludge removal component 49 includes mounting plates 33 fixedly connected to both sides of the top of the working box 1. Mounting rods 34 are fixedly connected between the two mounting plates 33, and four mounting rods 34 are provided. A transmission gear plate 35 is movably connected to the circumferential surface of every two mounting rods 34. A connecting plate 36 is fixedly connected to one side surface of the two mounting plates 33, and a transmission gear 37 is rotatably connected to one side surface of the connecting plate 36. All transmission gears 37 mesh with the two transmission gear plates 35. A movable plate 3 is fixedly connected to one side surface of the upper transmission gear plate 35. 8. The end of the discharge pipe 39 away from the sludge pump 9 is fixedly connected to the end of the moving plate 38 away from the transmission toothed plate 35. The lower transmission toothed plate 35 is fixedly connected to the top of the extrusion plate 19. The transmission toothed plate 35 is installed by the mounting plate 33 and the mounting rod 34. When the extrusion plate 19 moves, it can drive the lower transmission toothed plate 35 to move. With the help of the transmission gear 37, it can drive the upper transmission toothed plate 35 to move. The moving plate 38 can drive the upper end of the discharge pipe 39 to move, changing the discharge position of the sludge, so that the two filter bags 21 can be used alternately.

[0043] Furthermore, the extrusion assembly 47 includes an extrusion plate 19 movable inside the working chamber 1. Fixing plates 20 are fixedly connected to both sides inside the working chamber 1. Filter bags 21 are disposed between the two fixing plates 20 and the extrusion plate 19. Each filter bag 21 has a discharge port 22 on one side surface and an opening at the top. The top sides of the filter bags 21 are fixedly connected to the mounting base 23 and the top of the fixing plates 20, respectively. A connecting block is fixedly connected to the top of the extrusion plate 19 near the surface of the movable plate 4, and the connecting block is located away from the extrusion plate 19. The end of the connecting block penetrates the side wall of the working box 1 and extends to the outside of the working box 1. The end of the connecting block away from the extrusion plate 19 is fixedly connected to an annular toothed plate 18, and the annular toothed plate 18 is movably sleeved on the outside of the double-layer half gear 8. The annular toothed plate 18 meshes with the rear side of the double-layer half gear 8. When the sludge enters the interior of the filter bag 21, the extrusion plate 19 moves, and together with the fixing plate 20, the sludge inside the filter bag 21 can be squeezed, squeezing out the water and nutrients in the sludge and returning them to the water. The working efficiency of the sludge removal device can be improved by using two filter bags 21 alternately.

[0044] Furthermore, the sealing assembly 48 includes a mounting base 23 fixedly connected to the outer surface of the extrusion plate 19, and there are two mounting bases 23. The top and bottom of each of the two mounting bases 23 are fixedly connected to a sealing spring 24. A sealing plate 25 is fixedly connected to the end of each pair of sealing springs 24 away from the extrusion plate 19. Two sludge outlets 22 are respectively located between the two mounting bases 23 and the sealing plate 25. Limiting rods 26 are fixedly connected to the top and bottom of the two fixed plates 20. The two mounting bases 23, the sealing plate 25 and the extrusion plate 19 are movably connected to the circumferential surface of the two limiting rods 26. During the movement of the extrusion plate 19, the sludge outlets 22 can be opened by the mounting bases 23 in cooperation with the sealing plate 25, so that the sludge squeezed inside the filter bag 21 can be discharged for subsequent use. After the sludge is discharged, as the extrusion plate 19 moves, the elastic force of the sealing springs 24 can drive the sealing plate 25 to move, and cooperate with the mounting bases 23 to seal the sludge outlets 22 for subsequent use.

[0045] It is worth noting that a limiting seat 27 is fixedly connected to one side of the top of the working box 1. A limiting spring 28 is fixedly connected to the inner top wall of the limiting seat 27, and there are six limiting springs 28. A limiting plate 29 is fixedly connected to the lower end of every three limiting springs 28. A lifting block 30 and a limiting block 31 are fixedly connected to the two sides of the lower surface of the two limiting plates 29, respectively. The lower ends of the lifting block 30 and the limiting block 31 penetrate the bottom of the limiting seat 27 and extend to the outside of the limiting seat 27. A limiting groove 32 is opened on the top of the two sealing plates 25, and the limiting groove 32 corresponds to the limiting block 31. By using the limiting block 31 in conjunction with the limiting groove 32, the position of the sealing plate 25 can be restricted, and the discharge port 22 can be opened. As the extrusion plate 19 moves, the lifting block 30 can lift the limiting plate 29, causing the limiting block 31 to separate from the limiting groove 32 and release the restriction on the sealing plate 25. Both sides of the upper surface of the working box 1 are fixedly connected to the feeding hopper 40, and the two feeding hoppers 40 correspond to the positions of the two filter bags 21 respectively. The bottom of the working box 1 is fixedly connected to the filter plate 41. Both sides of the bottom of the other side of the working box 1 are fixedly connected to the tilting hopper 42, and the two tilting hoppers 42 correspond to the positions of the two sludge outlets 22 respectively. The water squeezed out is filtered by the filter plate 41 to prevent impurities from entering the water. The sludge discharged from the filter bag 21 is dropped by the tilting hopper 42 for subsequent treatment.

[0046] A dredging method for a dredging device in a water conservancy project includes the following steps:

[0047] S1. The work box 1 is installed above the water inlet of the dam using the mounting frame, and the bottoms of the silt suction component 45 and the crushing component 46 are both located at the bottom of the water. The crushing component 46 crushes the silt that has clumped at the bottom of the water, which is convenient for the silt suction component 45 to clean the silt afterward.

[0048] S2. The sludge is pumped into the filter bag 21 by the sludge pump 9 in conjunction with the sludge pumping pipe 10 and the sludge discharge pipe 39 for collection. The squeezing plate 19 moves in conjunction with the fixing plate 20 to squeeze and filter the sludge inside the filter bag 21.

[0049] S3. The movable extrusion plate 19, together with the sealing assembly 48, can open the sludge outlet 22, allowing the sludge squeezed inside the filter bag 21 to be discharged for subsequent processing.

[0050] S4. During the movement of the extrusion plate 19, the sludge discharge component 49 can be used to adjust the sludge discharge position and the filter bag 21 used, thereby improving the sludge treatment effect of the sludge removal device.

[0051] Working principle: The operator installs the work box 1 above the dam's inlet using a mounting frame, with the bottoms of the suction assembly 45 and the crushing assembly 46 located at the bottom of the water. This causes the motor 6 to operate, driving the rotating shaft 7 and the double-layer half-gear 8 to rotate. In conjunction with the driven gear 5, this drives the rotating rod 2 to rotate. The rotation of the rotating rod 2 causes the rotating plate 3, the movable plate 4, and the suction pipe 10 to swing, thus activating the suction pump 9. The suction pipe 10 then extracts the silt from the bottom of the water. When the driven gear 5 separates from the double-layer half-gear 8, the spring force of the return spring 44, in conjunction with the return plate 43, causes the movable plate 4 to swing. The device is reset, causing the movable plate 4 to swing back and forth, increasing the cleaning range of the sludge removal device. During the swinging process, the arc-shaped toothed ring 13 allows the movable plate 4 to extend and retract, minimizing the change in distance between the bottom of the movable plate 4 and the bottom of the water, thus improving the cleaning effect of the sludge removal device. Furthermore, the arc-shaped toothed ring 13, in conjunction with the linkage gear 12, drives the crank rod 11 to rotate back and forth. This, in turn, drives the lifting plate 15 to move up and down, which in turn drives the crushing plate 16 and the crushing cone 17 to move up and down, breaking up the clumps of sludge for subsequent processing. The cleaning of sludge is achieved by rotating the double-layer half gear 8, which drives the annular toothed plate 18 to reciprocate. The annular toothed plate 18, in turn, drives the squeezing plate 19 to reciprocate. Together with the fixed plate 20, this squeezes the sludge inside the filter bag 21, expelling water and nutrients back into the water. When the squeezing plate 19 moves, it drives the lower transmission toothed plate 35, which, in turn, drives the upper transmission toothed plate 35, in conjunction with the transmission gear 37. The moving plate 38 then moves the upper end of the discharge pipe 39, changing the sludge discharge position and allowing the two filter bags 21 to be used alternately. This alternating use of the two filter bags 21 effectively cleans the sludge. This improves the working efficiency of the dredging device. During the movement of the squeezing plate 19, the position of the sealing plate 25 can be restricted by the limiting block 31 and the limiting groove 32. With the help of the mounting base 23, the outlet 22 can be opened to allow the sludge squeezed inside the filter bag 21 to be discharged for subsequent use. After the sludge is discharged, as the squeezing plate 19 moves, the lifting block 30 can lift the limiting plate 29, so that the limiting block 31 and the limiting groove 32 are separated to release the restriction on the sealing plate 25. The elastic force of the sealing spring 24 can drive the sealing plate 25 to move, and with the help of the mounting base 23, the outlet 22 is sealed for subsequent use.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dredging device for water conservancy projects, comprising a working box (1), a dredging pump (9) fixedly connected to the top front side of the working box (1) by a fixing rod, and a dredging pipe (10) and a discharge pipe (39) respectively fixedly connected to the dredging port and the discharge port of the dredging pump (9), characterized in that: The inside of the working box (1) is provided with an extrusion assembly (47) and a sealing assembly (48), and the outside of the working box (1) is provided with a sludge suction assembly (45), a crushing assembly (46) and a sludge discharge assembly (49). The extrusion assembly (47) includes an extrusion plate (19) that is movable inside the working box (1). Fixing plates (20) are fixedly connected to both sides inside the working box (1). Filter bags (21) are provided between the two fixing plates (20) and the extrusion plate (19). A discharge port (22) is provided on one side surface of the two filter bags (21). An opening is provided on the top of the two filter bags (21). The two sides of the top of the filter bags (21) are fixedly connected to the top of the mounting base (23) and the top of the fixing plate (20) respectively. The sealing assembly (48) includes a mounting base (23) fixedly connected to the outer surface of the extrusion plate (19), and there are two mounting bases (23). A sealing spring (24) is fixedly connected to the top of each of the two mounting bases (23). A sealing plate (25) is fixedly connected to the end of each of the two sealing springs (24) away from the extrusion plate (19). The two outlets (22) are respectively located between the two mounting bases (23) and the sealing plate (25). Limiting rods (26) are fixedly connected to the top and bottom of the two fixing plates (20). The two mounting bases (23), the sealing plate (25) and the extrusion plate (19) are movably connected to the circumferential surface of the two limiting rods (26). The sludge removal assembly (49) includes mounting plates (33) fixedly connected to the top two sides of the work box (1), mounting rods (34) fixedly connected between the two mounting plates (33), and four mounting rods (34) are provided. A transmission gear plate (35) is movably connected to the circumferential surface of each pair of mounting rods (34). A connecting plate (36) is fixedly connected to one side surface of the two mounting plates (33), and a transmission gear (37) is rotatably connected to one side surface of the connecting plate (36). The transmission gear (37) meshes with the two transmission gear plates (35). A moving plate (38) is fixedly connected to one side surface of the upper transmission gear plate (35). The end of the sludge removal pipe (39) away from the sludge pump (9) is fixedly connected to the end of the moving plate (38) away from the transmission gear plate (35). The lower transmission gear plate (35) is fixedly connected to the top of the extrusion plate (19). A limiting seat (27) is fixedly connected to one side of the top of the work box (1). A limiting spring (28) is fixedly connected to the inner top wall of the limiting seat (27). There are six limiting springs (28). A limiting plate (29) is fixedly connected to the lower end of every three limiting springs (28). A lifting block (30) and a limiting block (31) are fixedly connected to the two sides of the lower surface of the two limiting plates (29). The lower ends of the lifting block (30) and the limiting block (31) penetrate the bottom of the limiting seat (27) and extend to the outside of the limiting seat (27). A limiting groove (32) is opened on the top of the two sealing plates (25). The limiting groove (32) corresponds to the limiting block (31).

2. The dredging device for water conservancy projects according to claim 1, characterized in that: The suction assembly (45) includes a rotating rod (2) rotatably connected to the top of one side surface of the working box (1). A rotating plate (3) is fixedly connected to one end of the rotating rod (2) away from the working box (1). A movable plate (4) is movably connected to the outside of the rotating plate (3). The suction pipe (10) is located away from the suction pump (9) on one side surface of the movable plate (4). A slider is fixedly connected to the top of the movable plate (4). A groove is opened inside the rotating plate (3), and the slider is slidably connected inside the groove.

3. The dredging device for water conservancy projects according to claim 2, characterized in that: A motor (6) is fixedly connected to the top of the work box (1) near the rotating plate (3). The output shaft of the motor (6) is connected to a rotating shaft (7) via a coupling. A double-layer half gear (8) is fixedly connected to the circumferential surface of the rotating shaft (7). A driven gear (5) is fixedly connected to the circumferential surface of the rotating rod (2). The driven gear (5) meshes with the front side of the double-layer half gear (8). A reset plate (43) is fixedly connected to the top of one side surface of the work box (1). A reset spring (44) is fixedly connected to the surface of the reset plate (43) near the movable plate (4). The end of the reset spring (44) away from the reset plate (43) is fixedly connected to the outer surface of the movable plate (4). The end of the rotating shaft (7) away from the motor (6) is connected to the impeller shaft of the sludge pump (9) via a coupling.

4. A dredging device for water conservancy projects according to claim 2, characterized in that: The crushing assembly (46) includes a lifting plate (15) that is slidably connected to the surface of the movable plate (4) near the working box (1). A crushing plate (16) is fixedly connected to the end of the lifting plate (15) away from the working box (1). A crushing cone (17) is fixedly connected to the surface of the crushing plate (16) away from the lifting plate (15). A leakage hole is opened on the surface of the crushing plate (16). A limiting ring is fixedly connected to the surface of the movable plate (4) near the working box (1), and multiple limiting rings are provided and are all sleeved on the outside of the lifting plate (15).

5. A dredging device for water conservancy projects according to claim 2, characterized in that: An arc-shaped toothed ring (13) is fixedly connected to the middle of one side surface of the work box (1). A crank rod (11) is rotatably connected to the top of the work box (1) near the surface of the movable plate (4). A linkage gear (12) is fixedly connected to the circumferential surface of the crank rod (11) away from the movable plate (4), and the linkage gear (12) meshes with the arc-shaped toothed ring (13). A connecting plate (14) is rotatably connected to the circumferential surface of the crank rod (11). The end of the connecting plate (14) away from the crank rod (11) is rotatably connected to the end of the lifting plate (15) near the crank rod (11). An arc-shaped groove is opened in the middle of one side surface of the work box (1), and the end of the crank rod (11) away from the movable plate (4) is movably connected inside the arc-shaped groove.

6. A dredging device for water conservancy projects according to claim 3, characterized in that: The top of the extrusion plate (19) near the surface of the movable plate (4) is fixedly connected to a connecting block, and the end of the connecting block away from the extrusion plate (19) penetrates the side wall of the working box (1) and extends to the outside of the working box (1). The end of the connecting block away from the extrusion plate (19) is fixedly connected to an annular toothed plate (18), and the annular toothed plate (18) is movably sleeved on the outside of the double-layer half gear (8). The annular toothed plate (18) meshes with the rear side of the double-layer half gear (8). Both sides of the upper surface of the working box (1) are fixedly connected to feed hoppers (40), and the two feed hoppers (40) correspond to the positions of the two filter bags (21) respectively. The bottom of the working box (1) is fixedly connected to a filter plate (41). Both sides of the bottom of the other side surface of the working box (1) are fixedly connected to inclined buckets (42), and the two inclined buckets (42) correspond to the positions of the two discharge ports (22) respectively.

7. A dredging method for a dredging device for water conservancy projects according to any one of claims 1-6, characterized in that, The steps are as follows: S1. The work box (1) is installed above the water inlet of the dam by the mounting frame, and the bottom of the silt suction component (45) and the crushing component (46) are both located at the bottom of the water. The crushing component (46) crushes the silt that has formed at the bottom of the water, which is convenient for the subsequent silt suction component (45) to clean the silt. S2. The sludge is pumped into the filter bag (21) by the sludge pump (9) in conjunction with the sludge pumping pipe (10) and the sludge discharge pipe (39) for collection. The squeezing plate (19) moves in conjunction with the fixing plate (20) to squeeze and filter the sludge inside the filter bag (21). S3. The movable extrusion plate (19) and the sealing assembly (48) can open the sludge outlet (22) so that the sludge squeezed inside the filter bag (21) can be discharged for subsequent processing. S4. During the movement of the extrusion plate (19), the sludge discharge component (49) can be used to adjust the position of the sludge discharge and the filter bag (21) used, thereby improving the sludge treatment effect of the sludge removal device.

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