Sludge treatment device for river regulation

Abstract

This invention relates to the field of river management technology, and in particular to a sludge treatment device for river management. The device includes a dewatering pipe with rotating spiral blades inside to compress the sludge. An outlet is located at the bottom of the dewatering pipe, and an arc-shaped filter screen is covered at the bottom of the outlet. The filter screen slides within the dewatering pipe. A discharge pipe is fixedly connected to the end of the dewatering pipe, and two long shafts are rotatably mounted on the outer wall of the discharge pipe. Multiple winding reels are fixedly connected to the shafts, and steel wire ropes are wound on the reels. The ends of the steel wire ropes are fixed to both sides of the filter screen. Connecting plates are fixedly connected to both sides of the bottom of the dewatering pipe, and nozzles are fixedly connected to the connecting plates to backwash the filter screen. This invention uses a servo motor to drive the filter screen to swing back and forth at the outlet. During the swinging process, the nozzles fixed to the bottom of the dewatering pipe continuously spray high-pressure water to backwash the filter screen. The swinging motion ensures that all parts of the filter screen are washed, effectively removing clogged sludge particles and maintaining high filtration efficiency.

Description

Technical Field

[0001] This invention relates to the field of river management technology, and in particular to a sludge treatment device for river management. Background Technology

[0002] In water environment management projects such as river and lake management, the sludge generated from dredging has an extremely high water content (usually exceeding 90%), is massive in volume, and poses high costs and environmental risks when directly transported and disposed of. Therefore, efficient sludge reduction and stabilization treatment is a key step in the management process, with dewatering being the core component.

[0003] Currently, the most commonly used sludge dewatering technology and equipment is the screw press dewatering machine. Its working principle involves using a variable pitch or diameter screw shaft to push and squeeze sludge within a sealed cylinder. It is a relatively efficient continuous dewatering method. However, this technology suffers from the drawback of easily clogged filters. This is because the squeezed water is discharged through the filter screen on the cylinder wall, and the fibers and sticky substances in the sludge easily clog the filter screen pores, leading to a rapid decrease in dewatering efficiency. Traditional backwashing is either fixed or intermittent, often requiring manual cleaning after shutdown, affecting continuous operation. Therefore, the screw press, currently the mainstream technology for continuous dewatering, commonly suffers from the phenomenon of "easily clogged filters requiring shutdown for cleaning" when processing river sludge. The process of stopping to clean the filters and restarting the operation consumes a significant amount of time, severely impacting sludge treatment efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sludge treatment device for river management.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design a sludge treatment device for river management, including a dewatering pipe with rotating spiral blades inside to compress the sludge. A liquid outlet is located at the bottom of the dewatering pipe, and an arc-shaped filter screen is covered at the bottom of the outlet. The filter screen slides in conjunction with the dewatering pipe. A discharge pipe is fixedly connected to the end of the dewatering pipe, and two long shafts are rotatably mounted on the outer wall of the discharge pipe. Multiple winding reels are fixedly connected to the shafts, and steel wire ropes are wound on the reels. The ends of the steel wire ropes are fixedly connected to both sides of the filter screen. Connecting plates are fixedly connected to both sides of the bottom of the dewatering pipe, and nozzles are fixedly connected to the connecting plates to backwash the filter screen.

[0006] Preferably, a main shaft is rotatably mounted at the end of the dehydration pipe, and a pulley is fixedly connected to the main shaft.

[0007] Preferably, a hopper for holding sludge is provided above the dewatering pipe, and the hopper is connected to the dewatering pipe so that the sludge in the hopper enters the dewatering pipe.

[0008] Preferably, driven gears are fixedly connected to both long shafts, a servo motor is fixedly connected to the discharge pipe, and a driving gear is fixedly connected to the output shaft of the servo motor to drive the driven gears to rotate.

[0009] Preferably, one end of the dewatering pipe extends into the discharge pipe and is equipped with a pressing plate. A sleeve is fixedly connected to the end face of the pressing plate, and a compression spring is provided inside the sleeve to apply pressure to the pressing plate.

[0010] Preferably, the discharge pipe is provided with a control structure to adjust the pressure applied by the compression spring to the pressing plate. The control structure includes an upper hinge seat fixed to the top of the discharge pipe and a lower hinge seat fixed to the bottom of the discharge pipe. A cylinder is hinged to the upper hinge seat, and a push plate is hinged to the lower hinge seat. The output end of the cylinder is hinged to the top of the push plate. A push rod is slidably fitted inside the sleeve to apply pressure to the compression spring. Slide rods are fixedly connected to both sides of the push rod. A slot is provided through the push plate to accommodate the sliding of the slide rods.

[0011] Preferably, studs are fixedly connected to both sides of the bottom of the dehydration pipe, bearing seats are slidably fitted on the studs, a connecting shaft is rotatably installed in the bearing seats, and a pressure roller is fixedly connected to the shaft body of the connecting shaft.

[0012] Preferably, a support spring is fitted on the stud to apply pressure to the bearing seat so that the pressure roller abuts against the filter screen.

[0013] Preferably, the end of the stud is threaded with an adjusting nut to adjust the elastic force of the support spring.

[0014] The sludge treatment device for river management proposed in this invention has the following advantages: This device uses spiral blades to spirally squeeze and dewater the sludge in the dewatering pipe, and controls the pressing force of the pressing plate by a cylinder, realizing stepless adjustment of the outlet pressure without stopping the machine. It can flexibly control the degree of dewatering according to the real-time working conditions, and is suitable for the complex and ever-changing sludge treatment needs in river management and other scenarios.

[0015] The filter screen is driven by a servo motor to swing back and forth at the liquid outlet. During the swinging process, the nozzle fixed at the bottom of the dewatering pipe continuously sprays high-pressure water to backwash the filter screen. The swinging process ensures that all parts of the filter screen are washed, effectively removing the clogging sludge particles and maintaining high filtration efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sludge treatment device for river management proposed in this invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of a sludge treatment device for river management proposed in this invention. Figure 2 .

[0018] Figure 3 This invention proposes a sludge treatment device for river management. Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 This is a top view of a sludge treatment device for river management proposed in this invention.

[0020] Figure 5 This invention proposes a sludge treatment device for river management. Figure 4 Cross-sectional view along the BB direction.

[0021] Figure 6 This invention proposes a sludge treatment device for river management. Figure 4 Cross-sectional view along the CC direction.

[0022] Figure 7 This is a schematic diagram of the internal structure of the discharge pipe of a sludge treatment device for river management proposed in this invention.

[0023] In the diagram: 1. Discharge pipe; 2. Upper hinge seat; 3. Cylinder; 4. Push plate; 5. Groove; 6. Lower hinge seat; 7. Press plate; 8. Sleeve; 9. Compression spring; 10. Dewatering pipe; 11. Servo motor; 12. Drive gear; 13. Driven gear; 14. Long shaft; 15. Winding reel; 16. Steel wire rope; 17. Filter screen; 18. Pressure roller; 19. Connecting shaft; 20. Bearing seat; 21. Stud; 22. Adjusting nut; 23. Support spring; 24. Connecting plate; 25. Nozzle; 26. Water supply pipe; 27. Spiral blade; 28. Pulley; 29. ​​Main shaft; 30. Hopper; 31. Push rod; 32. Slide rod; 33. Liquid outlet. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Reference Figures 1-6 A sludge treatment device for river management includes a dewatering pipe 10, a hopper 30 for holding sludge is provided above the dewatering pipe 10, the hopper 30 is connected to the dewatering pipe 10 so that the sludge in the hopper 30 enters the dewatering pipe 10, a spiral blade 27 is rotatably fitted inside the dewatering pipe 10 to spirally compress the sludge, a main shaft 29 is rotatably installed at the end of the dewatering pipe 10, a pulley 28 is fixedly connected to the shaft of the main shaft 29, one end of the main shaft 29 is fixedly connected to the spiral blade 27, and the other end of the main shaft 29 is linked to a diesel engine via the pulley 28.

[0026] During operation, the sludge in the hopper 30 enters the dewatering pipe 10 under the action of gravity and pressure. The diesel engine drives the pulley 28 to rotate via the belt. The pulley 28 drives the spiral blade 27 to rotate via the main shaft 29. During the rotation of the spiral blade 27, the sludge in the dewatering pipe 10 is spirally squeezed to squeeze out the water inside the sludge.

[0027] like Figures 3-7 As shown, the dehydration pipe 10 has a liquid outlet 33 at its bottom, and the bottom of the liquid outlet 33 is covered with an arc-shaped filter screen 17. The filter screen 17 is slidably fitted with the dehydration pipe 10. A discharge pipe 1 is fixedly connected to the end of the dehydration pipe 10. Two long shafts 14 are rotatably mounted on the outer wall of the discharge pipe 1. Multiple winding reels 15 are fixedly connected to the shafts of the long shafts 14. Steel wire ropes 16 are wound on the winding reels 15. The ends of the steel wire ropes 16 are fixedly connected to both sides of the filter screen 17. Connecting plates 24 are fixedly connected to both sides of the bottom of the dehydration pipe 10. Spray nozzles 25 are fixedly connected to the connecting plates 24 to backwash the filter screen 17. Driven gears 13 are fixedly connected to the shafts of the two long shafts 14. A servo motor 11 is fixedly connected to the discharge pipe 1. A drive gear 12 is fixedly connected to the output shaft of the servo motor 11 to drive the driven gears 13 to rotate.

[0028] When the servo motor 11 is powered on, it drives the drive gear 12 to rotate. The rotation of the drive gear 12 will drive the two driven gears 13 to rotate synchronously.

[0029] like Figure 5 As shown, when the driven gear 13 rotates clockwise, it drives the long shaft 14 to rotate clockwise. The long shaft 14 drives multiple winding reels 15 to rotate clockwise simultaneously. When the winding reels 15 rotate clockwise, the left winding reel 15 winds up the wire rope 16, thereby causing the filter screen 17 to slide to the left. When the driven gear 13 rotates counterclockwise, it drives the long shaft 14 to rotate counterclockwise. The long shaft 14 drives multiple winding reels 15 to rotate counterclockwise simultaneously. When the winding reels 15 rotate counterclockwise, the right winding reel 15 winds up the wire rope 16, thereby causing the filter screen 17 to slide to the right.

[0030] The alternating rotation of the two driven gears 13 causes the filter screen 17 to change its sliding direction, thus causing the filter screen 17 to swing back and forth on both sides with the liquid outlet 33 as the center. During the back and forth swinging process, the water supply pipe 26 supplies water to the nozzle 25, and the nozzle 25 sprays water onto the filter screen 17 to backwash the filter screen 17 through the impact of the water flow, so as to prevent the filter screen 17 from being blocked during operation and thus reducing the filtration efficiency.

[0031] like Figure 6 and Figure 7As shown, one end of the dewatering pipe 10 extends into the discharge pipe 1 and is equipped with a pressing plate 7. A sleeve 8 is fixedly connected to the end face of the pressing plate 7. A compression spring 9 is provided in the sleeve 8 to apply pressure to the pressing plate 7. A control structure is provided in the discharge pipe 1 to adjust the pressure applied by the compression spring 9 to the pressing plate 7. The control structure includes an upper hinge seat 2 fixed to the top of the discharge pipe 1 and a lower hinge seat 6 fixed to the bottom of the discharge pipe 1. A cylinder 3 is hinged to the upper hinge seat 2, and a push plate 4 is hinged to the lower hinge seat 6. The output end of the cylinder 3 is hinged to the top of the push plate 4. A push rod 31 is slidably fitted in the sleeve 8 to apply pressure to the compression spring 9. Slide rods 32 are fixedly connected to both sides of the push rod 31. A slot 5 is provided through the push plate 4 to accommodate the sliding of the slide rods 32.

[0032] The extension and retraction of cylinder 3 controls the rotation of push plate 4, which is fixed at one end, on a fixed axis. If cylinder 3 extends, push plate 4 rotates clockwise, simultaneously pushing push rod 31 forward towards compression spring 9 via slide rod 32. Compression spring 9 is further compressed to provide greater pressure to pressing plate 7. At this time, the sludge needs to overcome greater pressing force to push pressing plate 7 out of dewatering pipe 10, thereby achieving the purpose of higher pressure pressing and dewatering. Conversely, if cylinder 3 retracts, the material only needs to overcome a smaller pressing force to be squeezed out of dewatering pipe 10. The advantage of this outlet device is that by controlling the outlet pressure through cylinder 3, precise and real-time control of the outlet pressure can be achieved. The outlet pressure can be adjusted without stopping the machine. During operation, different outlet pressures can be controlled according to different materials to control the moisture content of the material after pressing.

[0033] like Figure 3 and Figure 5 As shown, studs 21 are fixedly connected to both sides of the bottom of the dewatering pipe 10. A bearing seat 20 is slidably fitted on the stud 21. A connecting shaft 19 is rotatably installed inside the bearing seat 20. A pressure roller 18 is fixedly connected to the shaft of the connecting shaft 19. A support spring 23 is sleeved on the stud 21 to apply pressure to the bearing seat 20 so that the pressure roller 18 abuts against the filter screen 17. An adjusting nut 22 is threaded at the end of the stud 21 to adjust the elastic force of the support spring 23.

[0034] As the adjusting nut 22 moves forward on the stud 21 toward the support spring 23, it will further compress the support spring 23, so that the support spring 23 provides greater elastic force to the bearing seat 20. Under the elastic force of the support spring 23, the pressure roller 18 on the shaft of the connecting shaft 19 always provides upward support force to the filter screen 17, so that the filter screen 17 is tightly pressed against the liquid outlet 33, maintaining the tightness of the joint surface between the two, thereby preventing sewage from leaking from the joint surface between the two.

[0035] Working principle: During operation, sludge is continuously pumped into hopper 30 by sludge pump, and the sludge in hopper 30 enters dewatering pipe 10 under the action of gravity and pressure.

[0036] The diesel engine drives the main shaft 29 to rotate via the pulley 28. The main shaft 29 drives the spiral blades 27 to rotate inside the dewatering tube 10. During the rotation of the spiral blades 27, the sludge entering the dewatering tube 10 is screwed and squeezed to squeeze out the water in the sludge.

[0037] The water squeezed out of the sludge is filtered through the filter screen 17 and then discharged. The sludge after pressing and dewatering is pushed open by the pressure of the press plate 7. After the press plate 7 is opened, the sludge after pressing and dewatering is discharged from the discharge pipe 1 under the action of gravity.

[0038] During the sludge pressing and dewatering process, power is supplied to the servo motor 11. After the servo motor 11 is powered on, it drives the drive gear 12 to rotate. The rotation of the drive gear 12 will drive the two driven gears 13 to rotate synchronously.

[0039] like Figure 5 As shown, when the driven gear 13 rotates clockwise, it drives the long shaft 14 to rotate clockwise. The long shaft 14 drives multiple winding reels 15 to rotate clockwise simultaneously. When the winding reels 15 rotate clockwise, the left winding reel 15 winds up the wire rope 16, thereby causing the filter screen 17 to slide to the left. When the driven gear 13 rotates counterclockwise, it drives the long shaft 14 to rotate counterclockwise. The long shaft 14 drives multiple winding reels 15 to rotate counterclockwise simultaneously. When the winding reels 15 rotate counterclockwise, the right winding reel 15 winds up the wire rope 16, thereby causing the filter screen 17 to slide to the right.

[0040] The alternating rotation of the two driven gears 13 causes the filter screen 17 to change its sliding direction, thus causing the filter screen 17 to swing back and forth on both sides with the liquid outlet 33 as the center. During the back and forth swinging process, the water supply pipe 26 supplies water to the nozzle 25, and the nozzle 25 sprays water onto the filter screen 17 to backwash the filter screen 17 through the impact of the water flow, so as to prevent the filter screen 17 from being blocked during operation and thus reducing the filtration efficiency.

[0041] This device uses spiral blades 27 to spirally compress and dewater the sludge in the dewatering pipe 10. The pressing force of the pressing plate 7 is controlled by cylinder 3, which realizes stepless adjustment of the outlet pressure without stopping the machine. It can flexibly control the degree of dewatering according to the real-time working conditions, and is suitable for the complex and ever-changing sludge treatment needs in scenarios such as river management.

[0042] The filter screen 17 is driven by the servo motor 11 to swing back and forth at the liquid outlet 33. During the swinging process, the nozzle 25 fixed at the bottom of the dewatering pipe 10 continuously sprays high-pressure water to backwash the filter screen 17. The swinging motion ensures that all parts of the filter screen 17 are washed, effectively removing the clogging sludge particles and maintaining high filtration efficiency.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sludge treatment device for river management, comprising a dewatering pipe (10), characterized in that, The dewatering pipe (10) is fitted with a spiral blade (27) to compress the sludge. The bottom of the dewatering pipe (10) is provided with an outlet (33). The bottom of the outlet (33) is covered with an arc-shaped filter screen (17). The filter screen (17) is slidably fitted with the dewatering pipe (10). The end of the dewatering pipe (10) is fixedly connected to a discharge pipe (1). Two long shafts (14) are rotatably installed on the outer wall of the discharge pipe (1). Multiple winding discs (15) are fixedly connected to the shaft of the long shafts (14). Steel wire ropes (16) are wound on the winding discs (15). The ends of the steel wire ropes (16) are fixedly connected to both sides of the filter screen (17). Connecting plates (24) are fixedly connected to both sides of the bottom of the dewatering pipe (10). Spray nozzles (25) are fixedly connected to the connecting plates (24) to backwash the filter screen (17).

2. The sludge treatment device for river management according to claim 1, characterized in that, The dehydration pipe (10) is rotatably mounted with a main shaft (29), and a pulley (28) is fixedly connected to the main shaft (29).

3. The sludge treatment device for river management according to claim 1, characterized in that, A hopper (30) for holding sludge is provided above the dewatering pipe (10). The hopper (30) is connected to the dewatering pipe (10) so that the sludge in the hopper (30) enters the dewatering pipe (10).

4. The sludge treatment device for river management according to claim 1, characterized in that, Both long shafts (14) are fixedly connected with driven gears (13), and a servo motor (11) is fixedly connected to the discharge pipe (1). A drive gear (12) is fixedly connected to the output shaft of the servo motor (11) to drive the driven gear (13) to rotate.

5. The sludge treatment device for river management according to claim 1, characterized in that, One end of the dewatering pipe (10) extends into the discharge pipe (1) and is equipped with a pressing plate (7). A sleeve (8) is fixedly connected to the end face of the pressing plate (7). A compression spring (9) is provided inside the sleeve (8) to apply pressure to the pressing plate (7).

6. The sludge treatment device for river management according to claim 5, characterized in that, The discharge pipe (1) is equipped with a control structure to adjust the pressure applied by the compression spring (9) to the pressing plate (7). The control structure includes an upper hinge seat (2) fixed at the top of the discharge pipe (1) and a lower hinge seat (6) fixed at the bottom of the discharge pipe (1). A cylinder (3) is hinged on the upper hinge seat (2), and a push plate (4) is hinged on the lower hinge seat (6). The output end of the cylinder (3) is hinged to the top of the push plate (4). A push rod (31) is slidably fitted inside the sleeve (8) to apply pressure to the compression spring (9). A slide rod (32) is fixedly connected to both sides of the push rod (31). A slot (5) is opened through the push plate (4) to accommodate the slide rod (32) sliding.

7. The sludge treatment device for river management according to claim 1, characterized in that, Both sides of the bottom of the dehydration pipe (10) are fixedly connected with studs (21), and bearing seats (20) are slidably fitted on the studs (21). A connecting shaft (19) is rotatably installed inside the bearing seat (20), and a pressure roller (18) is fixedly connected to the shaft body of the connecting shaft (19).

8. The sludge treatment device for river management according to claim 7, characterized in that, A support spring (23) is fitted on the stud (21) to apply pressure to the bearing seat (20) so that the pressure roller (18) abuts against the filter screen (17).

9. The sludge treatment device for river management according to claim 8, characterized in that, The end of the stud (21) is threaded with an adjusting nut (22) to adjust the elastic force of the support spring (23).

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