Sludge dewatering device for hydraulic engineering construction

Abstract

The present application relates to the technical field of sludge dewatering, in particular to a sludge dewatering device for water conservancy construction, which comprises a lifting seat installed at the lower end of a filter tank, a reciprocating screw rod rotates in the filter tank, a pressing plate is connected to the outer side of the reciprocating screw rod, a spray head is installed in the pressing plate, a connecting pipe is connected to one end of the spray head, a gear A is connected to the outer side of the connecting pipe, a filter screen is installed at one end of the filter tank, a fixing frame is installed at one end of the filter tank, a half gear is installed on one side of the fixing frame, a gear B rotates on one side of the half gear, and a rotating rod A is connected to one end of the gear B. When the present application is used, the accumulated sludge is preliminarily screened through the filter screen, and large impurities are separated out. When the spray head moves on the pressing plate, water is sprayed to wet and loosen the sludge, so that the sludge is more easily passed through the filter screen. The sludge is prevented from being blocked by the filter screen due to being too thick, the sludge residue adhered to the surface of the impurities is reduced, and the separation of the impurities and the sludge is more complete.

Description

Technical Field

[0001] This invention relates to the field of sludge dewatering technology, specifically to a sludge dewatering device for water conservancy engineering construction. Background Technology

[0002] In water conservancy projects, whether it's river dredging, dam construction, reservoir dredging, or irrigation canal renovation, a large amount of sludge with high water content is generated. This sludge has a complex composition, usually containing impurities such as mud, sand, organic matter, small stones, and plant residues. It also has an extremely high initial water content (often exceeding 80%), is bulky, and highly mobile. If it is directly piled up or transported, it will not only occupy a lot of space but may also cause secondary pollution due to leakage, while increasing transportation costs and subsequent treatment difficulties.

[0003] When using traditional equipment, the sludge contains a large number of impurities. As the sludge is filtered, the impurities affect its flow through the filter screen, making it more viscous and causing it to clog the filter screen. At the same time, the slower flow of the sludge increases the amount of sludge residue adhering to the surface of the impurities. Summary of the Invention

[0004] In use, this invention first screens the accumulated sludge through a filter screen to separate large impurities. When the nozzle moves with the pressure plate, it sprays water to wet and loosen the sludge clumps, making it easier for the sludge to pass through the filter screen. This prevents the sludge from clumping and clogging the filter screen due to excessive viscosity, reduces the amount of sludge residue on the surface of impurities, and makes the separation of impurities and sludge more thorough.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sludge dewatering device for water conservancy engineering construction, comprising a lifting seat installed at the lower end of a filter tank, a reciprocating screw rotating inside the filter tank, a pressure plate connected to the outside of the reciprocating screw, a nozzle installed inside the pressure plate, a connecting pipe connected to one end of the nozzle, a gear A connected to the outside of the connecting pipe, and a filter screen installed at one end of the filter tank.

[0006] A fixed frame is installed at one end of the filter tank, a half gear is installed on one side of the fixed frame, a gear B rotates on one side of the half gear, a rotating rod A is connected to one end of the gear B, and a filter cloth is connected to the outside of the rotating rod A.

[0007] On the other side of the half gear, there is a rotating gear C. One end of the gear C is connected to a rotating rod B. A turntable rotates on the outside of the rotating rod B. A sleeve is provided on one end of the turntable. A connecting rod is connected to the outside of the sleeve. A limit rod is installed on one side of the filter tank.

[0008] Preferably, the filter tank is provided in two sets, and a sealing plate is installed on one side of each set of filter tanks. A motor is installed at one end of each set of filter tanks. One end of the reciprocating screw extends through the filter tank to the outside and is connected to the output end of the motor. A bearing is installed on the outside of the reciprocating screw. The bearing is connected to the ball nut pair of the reciprocating screw. The outside of the bearing is connected to the pressure plate.

[0009] Preferably, guide rods are installed inside both sets of filter tanks, with both ends of the guide rods connected to the inner wall of the filter tank, and the outer side of the guide rods slidably connected to the pressure plate.

[0010] Preferably, the pressure plate is embedded with multiple sets of nozzles, one end of each set of nozzles is connected to a connecting pipe, the other end of the connecting pipe is connected to a water supply device, a rotating shaft is fixedly connected to one end of the gear A near the connecting pipe, the rotating shaft extends through the connecting pipe to the inside and is connected to a valve, a rack is meshed on one side of the gear A, and one end of the rack is connected to the inner wall of the filter tank.

[0011] Preferably, the other end of both sets of reciprocating screws extends through the filter groove to the outside and is connected to the half gear. The gear B is rotatably connected to the fixed frame and meshes with the half gear. The other end of the rotating rod A is rotatably connected to the lifting seat.

[0012] Preferably, one end of the filter tank is connected to a guide plate, the lower end of the filter cloth is provided with a guide channel, and the other end of the guide channel is connected to a water storage device.

[0013] Preferably, one end of the gear C is rotatably connected to the filter tank, and the gear C and the half gear are located on the same plane, while the other end of the rotating rod B is connected to the lifting seat.

[0014] Preferably, a turntable is fixedly connected to the outside of the rotating rod B, and multiple sets of magnetic blocks A are embedded inside the turntable.

[0015] Preferably, the sleeve is fitted onto the outside of the rotating rod B, and multiple sets of magnetic blocks B are embedded in the end of the sleeve near the turntable.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In use, this invention first screens the accumulated sludge through a filter screen to separate large impurities. Water is sprayed from the nozzle as the pressure plate moves, which moistens and loosens the sludge clumps, making it easier for the sludge to pass through the filter screen. This prevents the sludge from clumping and clogging the filter screen due to excessive viscosity, reduces the amount of sludge residue adhering to the surface of the impurities, and makes the separation of impurities from sludge more thorough. At the same time, after the pressure plate squeezes the impurities, it will break up elastic impurities such as tree branches. Because the impurities are squeezed by the pressure plate, they will accumulate into clumps due to the pressure, making it easier for workers to remove the impurities from the filter tank, thereby improving cleaning efficiency.

[0018] 2. This invention utilizes the shaking generated by the alternating winding of the filter cloth on both sides to continuously loosen the sludge structure, increasing the gaps between sludge particles and accelerating water penetration into the filter cloth. The shaking also prevents the sludge from hardening on the filter cloth surface, allowing more water to be separated during the flow process, significantly improving dewatering efficiency. Simultaneously, the intermittent meshing of the half-gear and gear B enables the filter cloth to achieve an alternating shaking cycle, ensuring that the sludge completes dewatering under continuous flow, achieving efficient synergy between conveying and dewatering.

[0019] 3. When in use, this invention knocks on the outside of the filter cloth at regular intervals. The vibration breaks the adsorption force of the sludge particles or fine impurities attached to the surface of the filter cloth, shakes off the dirt clogging the filter pores, and quickly restores the water permeability of the filter cloth. At the same time, the periodic knocking vibration allows the water between the sludge particles to penetrate the filter cloth more easily under the external force of vibration. The impact force generated by the knocking loosens the sludge layer on the filter cloth, reduces the water penetration resistance, and allows the sludge to dehydrate faster during the flow process, reducing the final sludge moisture content. Attached Figure Description

[0020] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0021] Figure 2 This is a second schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a structural diagram of the internal structure of the filter tank of the present invention;

[0023] Figure 4 This is one of the partial structural cross-sectional views of the present invention;

[0024] Figure 5 This is a second partial structural cross-sectional view of the present invention;

[0025] Figure 6 This is a partial structural cross-sectional view of the present invention (third one).

[0026] Figure 7 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0027] Figure 8 For the present invention Figure 4 Enlarged view of the structure at point B in the middle.

[0028] In the diagram: 1. Filter tank; 2. Lifting seat; 3. Motor; 4. Reciprocating screw; 5. Connecting pipe; 6. Nozzle; 7. Gear A; 8. Rotating shaft; 9. Rack; 10. Pressure plate; 11. Filter screen; 12. Half gear; 13. Gear B; 14. Rotating rod A; 15. Filter cloth; 16. Guide plate; 17. Guide channel; 18. Gear C; 19. Rotating rod B; 20. Turntable; 21. Magnetic block A; 22. Sleeve; 23. Magnetic block B; 24. Connecting rod; 25. Limiting rod; 26. Fixing frame; 27. Guide rod. Detailed Implementation

[0029] 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] Reference Figures 1-8 The present invention provides a sludge dewatering device for water conservancy engineering construction, including a lifting seat 2 installed at the lower end of a filter tank 1, a reciprocating screw 4 rotating inside the filter tank 1, a pressure plate 10 connected to the outside of the reciprocating screw 4, a nozzle 6 installed inside the pressure plate 10, a connecting pipe 5 connected to one end of the nozzle 6, a gear A7 connected to the outside of the connecting pipe 5, and a filter screen 11 installed at one end of the filter tank 1.

[0031] A fixed frame 26 is installed at one end of the filter tank 1. A half gear 12 is installed on one side of the fixed frame 26. A gear B13 rotates on one side of the half gear 12. A rotating rod A14 is connected to one end of the gear B13. A filter cloth 15 is connected to the outside of the rotating rod A14.

[0032] On the other side of the half gear 12, there is a rotating gear C18. One end of the gear C18 is connected to a rotating rod B19. A turntable 20 rotates on the outside of the rotating rod B19. A sleeve 22 is provided on one end of the turntable 20. A connecting rod 24 is connected to the outside of the sleeve 22. A limit rod 25 is installed on one side of the filter tank 1.

[0033] In an optional embodiment, the filter tank 1 is provided with two sets, and a sealing plate is installed on one side of each set of filter tank 1. A motor 3 is installed at one end of each set of filter tank 1. One end of the reciprocating screw 4 extends through the filter tank 1 to the outside and is connected to the output end of the motor 3. A bearing is installed on the outside of the reciprocating screw 4. The bearing is connected to the ball nut pair of the reciprocating screw 4. The outside of the bearing is connected to the pressure plate 10. Before use, the operator puts the sludge to be dewatered into the filter tank 1 through the feed port at the top of the filter tank 1. After the sludge enters the filter tank 1, because the filter tank 1 is in an inclined state, the sludge will automatically flow to the end of the filter tank 1 that is close to the filter screen 11 and accumulate. At this time, the motor 3 is started. After the motor 3 starts, it will drive the reciprocating screw 4 to rotate synchronously. When the reciprocating screw 4 rotates, it will drive the pressure plate 10 to move back and forth on the outside of the reciprocating screw 4.

[0034] Furthermore, after motor 3 starts, sludge should not be continuously added to the filter tank 1. Also, when the two sets of motors 3 are driven, there will be a certain time difference between the two sets of motors 3, so the two sets of motors 3 will not start synchronously.

[0035] In an optional embodiment, guide rods 27 are installed inside both sets of filter tanks 1. The two ends of the guide rods 27 are connected to the inner wall of the filter tank 1, and the outer sides of the guide rods 27 are slidably connected to the pressure plate 10. When the pressure plate 10 moves, it is limited and guided by the guide rods 27, thereby preventing the pressure plate 10 from tilting at both ends during the movement, which would result in inconsistent squeezing force on the sludge.

[0036] In an optional embodiment, the pressure plate 10 is internally fitted with multiple sets of nozzles 6. One end of each nozzle 6 is connected to a connecting pipe 5, and the other end of the connecting pipe 5 is connected to a water supply device. A rotating shaft 8 is fixedly connected to one end of a gear A7 near the connecting pipe 5. The rotating shaft 8 extends through the connecting pipe 5 and connects to a valve inside. A rack 9 meshes with one side of the gear A7, and one end of the rack 9 is connected to the inner wall of the filter tank 1. When the pressure plate 10 moves, it synchronously drives the multiple sets of nozzles 6 to move. When the nozzles 6 move, they synchronously drive the connecting pipes 5 to move. This will cause gear A7 to contact rack 9, and gear A7 will rotate through rack 9. After gear A7 rotates, the valve inside the connecting pipe 5 will open simultaneously. After the valve opens, water will enter the nozzle 6 through the connecting pipe 5 for spraying. During the spraying process of nozzle 6, because one set of nozzles 6 is located at the upper end of reciprocating screw 4 and nozzle 6 has an inclined angle, the front end of reciprocating screw 4 will be cleaned when nozzle 6 sprays water. Thus, the cleaning of reciprocating screw 4 by nozzle 6 ensures that the pressure plate 10 is not affected when moving.

[0037] When sludge accumulates at one end of the filter tank 1, the filter screen 11 separates large impurities from the sludge, allowing the sludge to flow out through the filter screen 11. As the pressure plate 10 moves, multiple sets of nozzles 6 spray water onto the accumulated sludge, further promoting the separation of sludge and impurities. After the pressure plate 10 moves to a certain position, it squeezes the impurities, allowing the accumulated sludge to be preliminarily screened through the filter screen 11, separating large impurities. The spraying of water by the nozzles 6 as the pressure plate 10 moves moistens and loosens the sludge clumps, making it easier for the sludge to pass through the filter screen 11. This prevents the sludge from clumping and clogging the filter screen 11 due to excessive viscosity, reducing sludge residue on the surface of the impurities and making the separation of impurities and sludge more thorough. At the same time, after the pressure plate 10 squeezes the impurities, it breaks up elastic impurities such as branches. As the impurities are squeezed by the pressure plate 10, they accumulate into clumps due to the squeezing force, making it easier for subsequent workers to remove the impurities from the filter tank 1, thereby improving cleaning efficiency.

[0038] After use, as the reciprocating screw 4 rotates and drives the pressure plate 10 to reset, the staff can open the sealing plate on one side of the two sets of filter tanks 1 to remove the large impurities separated inside the filter tank 1.

[0039] In an optional embodiment, the other ends of both sets of reciprocating screws 4 extend through the filter groove 1 to the outside and are connected to the half gear 12. Gear B13 is rotatably connected to the fixed frame 26 and meshes with the half gear 12. The other end of the rotating rod A14 is rotatably connected to the lifting seat 2. As described above, when the reciprocating screw 4 rotates, it will synchronously drive the two sets of half gears 12 to rotate. When the half gear 12 rotates, it will synchronously drive the gear B13 to rotate. When the gear B13 rotates, it will synchronously drive the rotating rod A14 to rotate. When the rotating rod A14 rotates, it will roll up the filter cloth 15. The two sets of half gears 12 rotate in opposite directions.

[0040] Furthermore, when the half gear 12 drives the gear B13 to rotate, because the half gear 12 is a half-tooth design, it will disengage from the gear B13 after rotating a certain degree. At this time, the filter cloth 15 will automatically reset due to the weight of the internal sludge pressing down. Because there is a certain time difference between the two sets of motors 3, they will not start synchronously. Therefore, there is a certain time difference in the rotation of the reciprocating screw 4 driven by the two sets of motors 3. As a result, the two sets of rotating rods A14 will form an alternating winding process. Because the two sides of the filter cloth 15 will shake alternately due to winding, and because the filter cloth 15 is designed with an inclined surface, the sludge on the upper end of the filter cloth 15 will gradually flow to one end through shaking until it falls off. Furthermore, during the sludge flow, the filter cloth 15 separates the sludge from the water. At this time, the water in the falling sludge will be separated during the movement. The shaking generated by the alternating rolling of the two sides of the filter cloth 15 can continuously loosen the sludge structure, increase the gap between sludge particles, accelerate the water penetration of the filter cloth 15, and prevent the sludge from hardening on the surface of the filter cloth 15, allowing more water to be separated during the flow, significantly improving the dewatering efficiency. At the same time, through the intermittent meshing of the half gear 12 and the gear B13, the filter cloth 15 can achieve the alternating shaking cycle, ensuring that the sludge is dewatered under continuous flow, achieving efficient synergy between conveying and dewatering.

[0041] During use, the operator can change the overall angle of the equipment through multiple sets of lifting seats 2, and the length of the filter cloth 15 can be changed. When the overall angle of the equipment is smaller, the filtration time of the filter cloth 15 for sludge will be extended. The filtration time can be changed according to the actual use. In addition, the filter tank 1 can separate large impurities in advance, so that the surface of the filter cloth 15 will not be damaged due to impurities when the filter cloth 15 separates sludge, thereby reducing equipment maintenance and making the separation process more stable. Since the half gear 12 and gear B13 are located on one side of the filter screen 11, the sludge will not affect the transmission between the half gear 12 and gear B13 when the filter screen 11 filters sludge.

[0042] In an optional embodiment, a guide plate 16 is connected to one end of the filter tank 1, and a guide channel 17 is provided at the lower end of the filter cloth 15. The other end of the guide channel 17 is connected to a water storage device. After the sludge is initially separated through the filter tank 1, it will fall precisely onto the upper end of the filter cloth 15 through the guide plate 16. After being separated through the filter cloth 15, the water will drip into the guide channel 17, so that the guide channel 17 will collect the separated water for subsequent reuse.

[0043] In an optional embodiment, one end of gear C18 is rotatably connected to filter tank 1, and gear C18 and half gear 12 are located on the same plane. The other end of rotating rod B19 is connected to lifting seat 2. When half gear 12 rotates, it will synchronously drive gear C18 to rotate. When gear C18 rotates, it will synchronously drive rotating rod B19 to rotate.

[0044] In an optional embodiment, a turntable 20 is fixedly connected to the outside of the rotating rod B19. Multiple sets of magnetic blocks A21 are embedded inside the turntable 20. As described above, when the rotating rod B19 rotates, it will synchronously drive the turntable 20 to rotate, and when the turntable 20 rotates, it will synchronously drive the magnetic blocks A21 to rotate.

[0045] In an optional embodiment, the sleeve 22 is sleeved on the outside of the rotating rod B19, and multiple sets of magnetic blocks B23 are embedded in the end of the sleeve 22 near the turntable 20. In the initial state, the sleeve 22 is attracted to the magnetic block A21 through the magnetic blocks B23. The connection between the rotating rod B19 and the filter tank 1 has a damping force. So after the half gear 12 drives the rotating rod B19 to rotate a certain angle, the half gear 12 will disengage from the rotating rod B19. At this time, the rotating rod B19 will not reset due to the damping force. When the rotating rod B19 rotates and drives the turntable 20 to rotate synchronously, the turntable 20 is attracted to the magnetic block B23 inside the sleeve 22 through the magnetic block A21. So when the turntable 20 rotates, it will drive the sleeve 22 to rotate synchronously. When the sleeve 22 rotates, it will drive the outer connecting rod 24 to rotate synchronously.

[0046] As the rotating rod B19 gradually rotates through the half gear 12, the position of the connecting rod 24 gradually rises. As the position of the connecting rod 24 gradually rises, it will contact the limiting rod 25. At this point, the connecting rod 24 will be limited and unable to move. If the rotating rod B19 drives the turntable 20 to rotate again, the magnetic block A21 will detach from the magnetic block B23. When the magnetic blocks A21 and B23 detach, the connecting rod 24 will be at a downward angle. Therefore, after the magnetic block B23 detaches from the magnetic block A21, the connecting rod 24 will descend due to its height. As the connecting rod 24 descends, it will simultaneously drive the sleeve 22 to rotate. Furthermore, the connecting rod 24 will generate a certain impact force due to its own weight during its descent. Simultaneously, the connecting rod 24 will not stop due to the magnetic attraction of the magnetic blocks A21 and B23 during its rapid descent. As the connecting rod 24 descends, it will... When the connecting rod 24 contacts the outer side of the filter cloth 15 and stops, the rotation of the turntable 20 will cause the magnetic blocks A21 and B23 to re-attract each other, thus repeatedly striking the filter cloth 15. This repeated striking of the filter cloth 15 occurs periodically. In addition to the above effects, the sludge entering the filter cloth 15 will be mixed with a lot of water as it is flushed by the water source when it detaches from the filter tank 1. This periodic striking of the outer side of the filter cloth 15 breaks the adsorption force of the sludge particles or fine impurities attached to the surface of the filter cloth 15 through vibration, shakes off the dirt clogging the filter pores, and quickly restores the water permeability of the filter cloth 15. At the same time, the periodic striking vibration allows the water between the sludge particles to penetrate the filter cloth 15 more easily under the external force of vibration. The impact force generated by the striking loosens the sludge layer on the filter cloth 15, reduces the water penetration resistance, and allows the sludge to dehydrate faster during the flow process, reducing the final sludge moisture content.

[0047] Working principle: Before use, the staff put the sludge to be dewatered into the filter tank 1 through the feed port at the top of the filter tank 1. After the sludge enters the filter tank 1, because the filter tank 1 is in an inclined state, the sludge will automatically flow to the end of the filter tank 1 that is close to the filter screen 11 and accumulate. At this time, the motor 3 is started. After the motor 3 starts, it will drive the reciprocating screw 4 to rotate synchronously. When the reciprocating screw 4 rotates, it will drive the pressure plate 10 to move back and forth on the outside of the reciprocating screw 4. When the pressure plate 10 moves, it will be limited and guided by the guide rod 27. At the same time, when the two sets of motors 3 are driven, there will be a certain time difference between the two sets of motors 3, so the two sets of motors 3 will not start synchronously.

[0048] When the pressure plate 10 moves, it will drive multiple sets of nozzles 6 to move synchronously. When the nozzles 6 move, they will drive the connecting pipe 5 to move synchronously. When the connecting pipe 5 moves, it will cause the gear A7 to contact the rack 9, so the gear A7 will rotate through the rack 9. After the gear A7 rotates, it will open the valve inside the connecting pipe 5 synchronously. After the valve opens, the water source will enter the nozzle 6 through the connecting pipe 5 for spraying. During the spraying process of the nozzle 6, because one set of nozzles 6 is located at the upper end of the reciprocating screw 4 and the nozzle 6 has an inclined angle, the reciprocating screw 4 at the front end will be cleaned when the nozzle 6 sprays water.

[0049] When sludge accumulates at one end of the filter tank 1, the filter screen 11 will separate large impurities in the sludge, so that the sludge flows out through the filter screen 11. When the pressure plate 10 moves, multiple sets of nozzles 6 spray water on the accumulated sludge. After the pressure plate 10 moves to a certain position, it will squeeze the impurities.

[0050] When the reciprocating screw 4 rotates, it synchronously drives the two sets of half gears 12 to rotate. When the half gears 12 rotate, they synchronously drive the gear B13 to rotate. When the gear B13 rotates, it synchronously drives the rotating rod A14 to rotate. When the rotating rod A14 rotates, it will roll up the filter cloth 15. The two sets of half gears 12 rotate in opposite directions. When the half gear 12 drives the gear B13 to rotate, because the half gear 12 is a half-tooth design, it will disengage from the gear B13 after rotating a certain degree. At this time, the filter cloth 15 will automatically reset due to the weight of the sludge pressing down inside. Because there is a certain time difference between the rotation of the two sets of motors 3 and the reciprocating screw 4, the two sets of rotating rods A14 will form an alternating winding process. Because the two sides of the filter cloth 15 will shake alternately due to winding, and the filter cloth 15 is designed with a slope, the sludge on the upper end of the filter cloth 15 will gradually flow to one end until it falls off. During the sludge flow, the sludge will be separated from the water through the filter cloth 15.

[0051] When half gear 12 rotates, it synchronously drives gear C18 to rotate. When gear C18 rotates, it synchronously drives rotating rod B19 to rotate. When rotating rod B19 rotates, it synchronously drives turntable 20 to rotate. When turntable 20 rotates, it synchronously drives magnetic block A21 to rotate. After half gear 12 drives rotating rod B19 to rotate a certain angle, half gear 12 will disengage from rotating rod B19. At this time, rotating rod B19 will not return to its original position due to damping force. When rotating rod B19 drives turntable 20 to rotate synchronously, turntable 20 is attracted to magnetic block B23 inside sleeve 22 through magnetic block A21. Thus, when turntable 20 rotates, it synchronously drives sleeve 22 to rotate. When sleeve 22 rotates, it synchronously drives outer connecting rod 24 to rotate. As rotating rod B19 gradually rotates through half gear 12, the position of connecting rod 24 will gradually change. As the position of the connecting rod 24 gradually rises, it will come into contact with the limiting rod 25. At this point, the connecting rod 24 will be limited and unable to move. If the rotating rod B19 drives the turntable 20 to rotate again, the magnetic block A21 and the magnetic block B23 will detach from each other. When the magnetic block A21 and the magnetic block B23 detach from each other, the position of the connecting rod 24 will be at a downward angle. As the magnetic block B23 detaches from the magnetic block A21, the connecting rod 24 will descend due to its height. When the connecting rod 24 descends, it will simultaneously drive the sleeve 22 to rotate. The connecting rod 24 will also generate a certain impact force due to its own weight when it descends. At the same time, the connecting rod 24 will not stop due to the magnetic attraction of the magnetic block A21 and the magnetic block B23 when it descends rapidly. As the connecting rod 24 descends, it will come into contact with the outside of the filter cloth 15.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge dewatering device for water conservancy engineering construction, comprising a lifting seat (2) installed at the lower end of a filter tank (1), characterized in that: The filter tank (1) has a reciprocating screw (4) rotating inside. A pressure plate (10) is connected to the outside of the reciprocating screw (4). A nozzle (6) is installed inside the pressure plate (10). One end of the nozzle (6) is connected to a connecting pipe (5). A gear A (7) is connected to the outside of the connecting pipe (5). A rotating shaft (8) is fixedly connected to one end of the gear A (7) near the connecting pipe (5). The rotating shaft (8) extends through the connecting pipe (5) and connects to the valve inside. A rack (9) meshes with one side of the gear A (7). One end of the rack (9) is connected to the inner wall of the filter tank (1). A filter screen (11) is installed at one end of the filter tank (1). A fixing frame (26) is installed at one end of the filter tank (1). A half gear (12) is installed on one side of the fixing frame (26). A gear B (13) rotates on one side of the half gear (12). A rotating rod A (14) is connected to one end of the gear B (13). The other end of the reciprocating screw (4) extends through the filter tank (1) to the outside and is connected to the half gear (12). A filter cloth (15) is connected to the outside of the rotating rod A (14). On the other side of the half gear (12), there is a rotating gear C (18). One end of the gear C (18) is connected to a rotating rod B (19). A turntable (20) rotates on the outside of the rotating rod B (19). A sleeve (22) is provided on one end of the turntable (20). A connecting rod (24) is connected to the outside of the sleeve (22). A limit rod (25) is installed on one side of the filter tank (1). The turntable (20) is fixedly connected to the outside of the rotating rod B (19). Multiple sets of magnetic blocks A (21) are embedded inside the turntable (20). The sleeve (22) is sleeved on the outside of the rotating rod B (19), and multiple sets of magnetic blocks B (23) are embedded on the end of the sleeve (22) near the turntable (20).

2. The sludge dewatering device for water conservancy project construction according to claim 1, characterized in that, The filter tank (1) is provided in two sets. A sealing plate is installed on one side of each set of filter tanks (1). A motor (3) is installed at one end of each set of filter tanks (1). One end of the reciprocating screw (4) extends through the filter tank (1) to the outside and is connected to the output end of the motor (3). A bearing is installed on the outside of the reciprocating screw (4). The bearing is connected to the ball nut pair of the reciprocating screw (4). The outside of the bearing is connected to the pressure plate (10).

3. The sludge dewatering device for water conservancy project construction according to claim 1, characterized in that, Both sets of filter tanks (1) are equipped with guide rods (27). The two ends of the guide rods (27) are connected to the inner wall of the filter tank (1), and the outer side of the guide rods (27) is slidably connected to the pressure plate (10).

4. The sludge dewatering device for water conservancy project construction according to claim 1, characterized in that, The pressure plate (10) is embedded with multiple sets of nozzles (6), one end of each set of nozzles (6) is connected to a connecting pipe (5), and the other end of the connecting pipe (5) is connected to a water supply device.

5. A sludge dewatering device for water conservancy engineering construction according to claim 1, characterized in that, The gear B (13) is rotatably connected to the fixed frame (26), and the gear B (13) meshes with the half gear (12). The other end of the rotating rod A (14) is rotatably connected to the lifting seat (2).

6. A sludge dewatering device for water conservancy project construction according to claim 1, characterized in that, One end of the filter tank (1) is connected to a guide plate (16), and the lower end of the filter cloth (15) is provided with a guide groove (17). The other end of the guide groove (17) is connected to a water storage device.

7. A sludge dewatering device for water conservancy engineering construction according to claim 1, characterized in that, One end of the gear C (18) is rotatably connected to the filter tank (1), and the gear C (18) and the half gear (12) are located on the same plane. The other end of the rotating rod B (19) is connected to the lifting seat (2).

Images