Multi-stage spiral-flow type ecological silt separation device and desilting method thereof

Abstract

The invention provides a multi-stage spiral-flow type ecological silt separation device and a desilting method thereof. The device comprises a rack; the multiple cyclone separators are all installed on the rack, one side of each cyclone separator is provided with a silt pump, the top end of the cyclone separator at the forefront position is communicated with an inlet pipe, the bottom end of the cyclone separator at the rearmost position is communicated with a three-way pipe, and the three-way pipe is communicated with a water inlet pipe. A turbidity sensor is arranged at one port of the three-way pipe, and electromagnetic valves are arranged at the other two ports of the three-way pipe; the feeding treatment shell is arranged to be matched with the multiple cyclone separators for use, the multiple cyclone separators achieve multi-stage separation operation, the separation operation precision is improved, pretreatment centrifugation is achieved through matched use of the centrifugal net barrel in the feeding treatment shell, and the phenomenon that materials are directly input into the cyclone separators, and consequently blockage and clamping stagnation are likely to be caused can be prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ecological silt treatment, and in particular to a multi-stage cyclone type ecological silt separation device and a dredging method thereof. BACKGROUND

[0002] ‌Ecological silt, also known as ecological mud, is an environmentally friendly interior wall coating material mainly made of natural minerals, which has the functions of purifying air and adjusting humidity. The main component of ecological silt is primary ecological mineral, which is processed into a powdery material suitable for wall construction by removing impurities at 1100°C and applying nanotechnology. Its production process ensures that it does not contain harmful substances such as formaldehyde and benzene, and its environmental performance far exceeds national standards.

[0003] In the production and processing process of ecological silt, multiple production equipment is needed, and one of the equipment is a separator. The ecological silt is separated by using a cyclone separator. However, the existing cyclone separator lacks a pretreatment mechanism for the ecological silt material before separation, which can cause the ecological silt material to be difficult to separate quickly after being added to the cyclone separator, and in severe cases, it can even cause blockage and stagnation. For this reason, we propose a multi-stage cyclone type ecological silt separation device and a dredging method. SUMMARY

[0004] The present application is proposed to solve the above problems, and aims to provide a multi-stage cyclone type ecological silt separation device and a dredging method thereof. The device can improve the separation operation precision and prevent the material from being directly input into the cyclone separator, which can easily cause blockage and stagnation.

[0005] To achieve the above purpose, the first aspect of the present application provides a multi-stage cyclone type ecological silt separation device, comprising: The present application provides the following technical solution: a multi-stage cyclone type ecological silt separation device, comprising a rack; A plurality of cyclone separators are installed on the rack, and each of the plurality of cyclone separators is provided with a silt pump on one side. The top end of the cyclone separator at the most front position is connected and installed with an inlet pipe, and the bottom end of the cyclone separator at the last position is connected and installed with a three-way pipe. One port of the three-way pipe is provided with a turbidity sensor, and the other two ports of the three-way pipe are provided with electromagnetic valves. The inlet and outlet of the silt pump at the most front position are respectively connected with one end of the three-way pipe and the inlet pipe. The inlet and outlet of the silt pump at the rear position are respectively connected with the bottom end and the top end of the adjacent two cyclone separators. The top end of the cyclone separator is connected and installed with an overflow pipe, and the same communication pipe is connected and installed between the plurality of overflow pipes; A feeding processing housing is mounted on a frame and connected to an inlet pipe. A first housing cover is fastened to the feeding processing housing, and a material inlet pipe is installed on the first housing cover. A motor is fixedly mounted on the surface of the first housing cover, and a rotating shaft is fixedly mounted on the end of the output shaft of the motor. The bottom end of the rotating shaft extends into the inside of the feeding processing housing and is detachably mounted with a centrifugal screen. Several sliding rods are slidably arranged on the first housing cover. A lower sliding frame is detachably mounted on the bottom end of each sliding rod. A clearing rod is fixedly mounted on the lower surface of the lower sliding frame, and a clearing block is fixedly mounted on the bottom end of each clearing rod. The clearing block is used in conjunction with the inlet pipe. The discharge processing housing is mounted on the frame. An outlet pipe is installed on the side of the discharge processing housing. A filter screen is inserted inside the discharge processing housing. A second cover is detachably installed on the discharge processing housing and is connected to a connecting pipe.

[0006] The above scheme utilizes a feed processing shell in conjunction with multiple hydrocyclones. These hydrocyclones enable multi-stage separation, improving separation accuracy. A centrifugal screen within the feed processing shell provides pre-treatment centrifugation, preventing direct material input into the hydrocyclones and thus avoiding blockages. Rollers, working in conjunction with the wave-shaped grooves on the sliding seat, cause the centrifugal screen to rotate with the shaft, driving the sliding rod and lower sliding frame in a reciprocating motion. This, in turn, drives the unblocking block up and down, allowing material to quickly enter the inlet pipe, preventing blockages and accumulation that hinder entry into the hydrocyclones. A sludge pump, in conjunction with a solenoid valve and turbidity sensor, detects turbidity during discharge after separation by the hydrocyclones. If the turbidity meets standards, it is discharged; otherwise, it is pumped back into the hydrocyclones to maintain separation efficiency. A filter screen is used to treat overflow water, preventing small particles from being mixed in.

[0007] In the above scheme, it should be noted that the motor, sludge pump and turbidity sensor are electrically connected to an external power supply.

[0008] In a preferred embodiment, a roller is fixedly mounted on the outer surface of the rotating shaft, an upper sliding seat is fixedly mounted on the top end of the sliding rod, the upper surface of the upper sliding seat has a wavy groove, the roller rolls against the inner wall of the wavy groove, a limit ring is fixedly mounted on the outer surface of the sliding rod, and a spring is fixedly mounted between the limit ring and the first cover.

[0009] Using the above scheme, when the shaft rotates, it will drive the roller to roll in the wave-shaped groove, which will in turn drive the upper sliding seat to move the sliding rod up and down, and then drive the unblocking block up and down through the unblocking rod. This can quickly unblock the material into the inlet pipe and prevent the material from accumulating and blocking it. The limit ring, in conjunction with the elasticity of the spring, can ensure a stable fit between the upper sliding seat and the roller.

[0010] In a preferred embodiment, the bottom end of the sliding rod is provided with a first threaded groove, and a plurality of first bolts are threadedly installed on the lower sliding frame, the first bolts and the first threaded groove being used in conjunction.

[0011] By using the above solution, the first bolt and the first threaded groove can be used together to achieve convenient disassembly and assembly between the lower sliding frame and the sliding rod, which facilitates the disassembly and maintenance of the unblocking block.

[0012] In a preferred embodiment, a support frame is movably arranged inside the feeding processing housing. An insert is fixedly installed on the inner wall of the support frame. A cleaning brush is inserted into the outer surface of the insert. Several second bolts are threaded onto the cleaning brush. Several second threaded grooves are opened on the insert for the second bolts to be screwed into.

[0013] Using the above solution, the support frame is used in conjunction with the insert strip and the cleaning brush. The cleaning brush can clean the centrifuge screen and prevent the screen holes from becoming clogged. The second bolt allows for easy disassembly and assembly of the cleaning brush, facilitating subsequent disassembly and maintenance.

[0014] In a preferred embodiment, a rotating ring is rotatably mounted on the inner wall of the support frame, and a plurality of guide holes are provided on the rotating ring. A plurality of guide posts are fixedly mounted on the lower surface of the centrifugal mesh cylinder, and the guide posts are used in conjunction with the guide holes.

[0015] By using the above scheme, the centrifuge screen can be rotated and supported by the rotating ring and the guide post inserted into the guide hole, so that the centrifuge screen has good stability during rotation and will not wobble.

[0016] In a preferred embodiment, a mounting bracket is fixedly installed at the bottom end of the rotating shaft, and a plurality of third threaded grooves are provided on the lower surface of the mounting bracket. A plurality of third bolts are threadedly installed on the lower surface of the centrifugal mesh cylinder, and the third bolts are used in conjunction with the third threaded grooves.

[0017] Using the above scheme, the mounting bracket on the rotating shaft and the centrifuge screen can be assembled by using the third bolt. The assembly structure is simple and facilitates the subsequent disassembly and assembly of the centrifuge screen.

[0018] In a preferred embodiment, a trapezoidal limiting plate is fixedly installed on the side of the support frame, and a trapezoidal limiting groove is provided on the inner wall of the feeding processing housing for the trapezoidal limiting plate to be inserted.

[0019] By using the above solution, the trapezoidal limiting plate can be inserted into the trapezoidal limiting groove to limit the support frame, prevent the support frame from shaking, and thus ensure the good stability of the centrifugal mesh cylinder.

[0020] In a preferred embodiment, a support frame is fixedly installed on the outer surface of the filter screen, and a number of fixing screws are fixedly installed on the upper surface of the discharge processing housing. A number of through holes are opened on both the support frame and the second housing cover. The fixing screws pass through the through holes and the outer surface of the fixing screws is threaded with fixing nuts. The fixing nuts are fitted and arranged on the upper surface of the second housing cover.

[0021] By using the above solution, and with the support frame in conjunction with fixing screws and nuts, a stable locking operation can be achieved between the filter screen and the second cover and the discharge processing housing.

[0022] A second aspect of the present invention provides a method for dredging using the above-described multi-stage cyclone ecological sediment separation device, comprising the following steps: S1. The ecological mud and sand to be treated are injected into the feeding treatment shell through the material inlet pipe. The motor starts and drives the rotating shaft to rotate the centrifugal screen. The rotation of the centrifugal screen achieves pre-treatment centrifugation. The material after being thrown out is injected into the hydrocyclone separator at the front position through the inlet pipe. S2. The sediment after separation by the hydrocyclone flows downward and is pumped by the sediment pump to the second hydrocyclone. This process is repeated through several hydrocyclones to achieve multi-stage hydrocyclone separation. The separated sediment is then transported to the tee pipe. S3. During the separation process, the overflow water flows out from the overflow pipe and is transported to the discharge processing shell through the connecting pipe. After being filtered again by the filter screen, it is discharged from the outlet pipe. S4. When the motor drives the shaft to rotate, it will drive the roller to rotate synchronously. The roller rolls in the wave-shaped groove on the upper sliding seat, which will drive the upper sliding seat to move up and down. In turn, through the sliding rod and the lower sliding frame, the unblocking rod drives the unblocking block to move up and down reciprocally, so that the material mud and sand can quickly enter the inlet pipe and avoid accumulation and blockage. S5. At the same time, the cleaning brush can clean the centrifuge screen during the rotation process to prevent the screen holes from becoming blocked.

[0023] In a preferred embodiment, in step S2, turbidity is detected by a turbidity sensor. If the turbidity detection meets the standard, the solenoid valve at the free port position on the three-way pipe is opened and discharged. If the turbidity detection does not meet the standard, the solenoid valve at the position connected to the foremost mud pump on the three-way pipe is opened and the corresponding mud pump is started, so as to realize the swirling separation of mud and sand in a recirculating manner.

[0024] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the multi-stage cyclone ecological sediment separation device of the present invention uses a feeding processing shell in conjunction with multiple cyclone separators to achieve multi-stage separation operations, thereby improving the separation accuracy. The centrifugal screen inside the feeding processing shell is used in conjunction to achieve pre-treatment centrifugation, which can prevent materials from being directly input into the cyclone separator and causing blockages.

[0025] Secondly, the multi-stage cyclone ecological sediment separation device of the present invention uses rollers in conjunction with the wave-shaped grooves on the upper sliding seat. When the centrifugal screen rotates with the rotating shaft, it drives the sliding rod to drive the lower sliding frame to move up and down reciprocally. In turn, the unblocking rod drives the unblocking block to move up and down, so that the material can quickly enter the inlet pipe and avoid material blockage and accumulation, which makes it difficult for the material to quickly enter the cyclone separator.

[0026] Thirdly, the multi-stage cyclone ecological sediment separation device of the present invention uses a sediment pump in conjunction with a solenoid valve and a turbidity sensor. When the sediment is discharged after being separated by multiple cyclone separators, the turbidity is detected by the turbidity sensor. If the turbidity meets the standard, it is discharged. If the turbidity does not meet the standard, the sediment pump is used to pump it back into the cyclone separator to ensure the separation effect.

[0027] Fourth, the multi-stage vortex ecological sediment separation device of the present invention, when used in conjunction with a filter screen, can filter the overflow water, thus preventing small particulate matter from being mixed into the overflow water and discharged. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram of the present invention from another angle; Figure 3 This is a schematic diagram of the cyclone separator of the present invention; Figure 4 This is a structural schematic diagram of the cross-section of the feed processing housing and the first housing cover of the present invention; Figure 5 This is a schematic diagram of the cross-sectional view of the first shell cover of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the centrifugal mesh cylinder and support frame of the present invention; Figure 7 This is a schematic diagram of the cross-section of the centrifugal mesh cylinder of the present invention; Figure 8 This is a schematic diagram of the exploded structure of the discharge processing shell, filter screen, and second shell cover of the present invention; In the diagram: 1. Frame; 2. Cyclone separator; 3. Feed processing shell; 4. Discharge processing shell; 5. Inlet pipe; 6. Sludge pump; 7. T-connector; 8. Turbidity sensor; 9. Solenoid valve; 10. Overflow pipe; 11. Connecting pipe; 12. First shell cover; 13. Material inlet pipe; 14. Motor; 15. Shaft; 16. Centrifugal screen; 17. Sliding rod; 18. Lower sliding frame; 19. Unblocking rod; 20. Unblocking block; 21. Outlet pipe; 22. Filter screen; 23. Support frame; 24. Second shell cover; 25. Roller; 26. Upper sliding seat; 27. Limiting ring; 28. Spring; 29. ​​First bolt; 30. Support frame; 31. Cleaning brush; 32. Insert strip; 33. Second bolt; 34. Trapezoidal limiting plate; 35. Rotating ring; 36. Mounting bracket; 37. Third bolt; 38. Guide post; 39. Fixing screw; 40. Fixing nut. Detailed Implementation

[0029] Please see Figures 1-8 The multi-stage cyclone ecological sediment separation device provided by this invention includes a frame 1; several cyclone separators 2, all mounted on the frame 1, and a sediment pump 6 installed on one side of each cyclone separator 2. The top of the foremost cyclone separator 2 is connected to an inlet pipe 5, and the bottom of the rearmost cyclone separator 2 is connected to a three-way pipe 7. One port of the three-way pipe 7 is equipped with a turbidity sensor 8, and the other two ports are equipped with solenoid valves 9. The sediment pump 6 at the foremost position... The inlet and outlet are connected to one end of the three-way pipe 7 and the inlet pipe 5, respectively. The inlet and outlet of the sediment pump 6 at the rear position are connected to the bottom and top of the two adjacent hydrocyclones 2, respectively. Specifically, the inlet of each sediment pump 6 at the rear position is connected to the bottom of the adjacent preceding hydrocyclone 2, and the outlet of the sediment pump 6 is connected to the top of the following hydrocyclone 2. An overflow pipe 10 is installed at the top of the hydrocyclone 2, and the same connecting pipe 11 is installed between several overflow pipes 10. The feeding processing housing 3 is installed on the frame 1 and connected to the inlet pipe 5. A first housing cover 12 is fastened to the feeding processing housing 3. A material inlet pipe 13 is installed on the first housing cover 12. A motor 14 is fixedly installed on the surface of the first housing cover 12. A rotating shaft 15 is fixedly installed at the end of the output shaft of the motor 14. The bottom end of the rotating shaft 15 extends into the inside of the feeding processing housing 3 and a centrifugal screen cylinder 16 is detachably installed. Several sliding rods 17 are slidably arranged on the first housing cover 12. A lower sliding frame 18 is detachably installed at the bottom end of the sliding rod 17. A clearing rod 19 is fixedly installed on the lower surface of the lower sliding frame 18. A clearing block 20 is fixedly installed at the bottom end of the clearing rod 19. The clearing block 20 is used in conjunction with the inlet pipe 5. The discharge processing housing 4 is installed on the frame 1. An outlet pipe 21 is installed on the side of the discharge processing housing 4. A filter screen 22 is inserted inside the discharge processing housing 4. A second housing cover 24 is detachably installed on the discharge processing housing 4 and is connected to the connecting pipe 11.

[0030] By using the feed processing housing 3 in conjunction with multiple hydrocyclones 2, multi-stage separation is achieved, improving separation accuracy. The centrifugal screen 16 inside the feed processing housing 3 is used for pre-treatment centrifugation, preventing direct material input into the hydrocyclones 2 from causing blockages. Rollers 25, in conjunction with the wavy grooves on the sliding seat 26, cause the centrifugal screen 16 to rotate with the shaft 15, driving the sliding rod 17 to move the lower sliding frame 18 up and down. This, in turn, drives the unblocking block via the unblocking rod 19. The up-and-down movement of the 20 allows the material to quickly enter the inlet pipe 5, preventing material blockage and accumulation that would hinder its rapid entry into the hydrocyclone 2. By using a mud pump 6 in conjunction with a solenoid valve 9 and a turbidity sensor 8, the turbidity of the mud and sand discharged after separation by multiple hydrocyclones 2 is detected by the turbidity sensor 8. If the turbidity meets the standard, it is discharged; if it does not meet the standard, the mud pump 6 draws it back into the hydrocyclone 2 to ensure the separation effect. By using a filter screen 22, the overflow water can be filtered to prevent small particles from being mixed in with the overflow water.

[0031] A roller 25 is fixedly installed on the outer surface of the rotating shaft 15, and an upper sliding seat 26 is fixedly installed on the top of the sliding rod 17. The upper surface of the upper sliding seat 26 has a wavy groove. The roller 25 rolls against the inner wall of the wavy groove. A limit ring 27 is fixedly installed on the outer surface of the sliding rod 17. A spring 28 is fixedly installed between the limit ring 27 and the first cover 12. When the rotating shaft 15 rotates, it will drive the roller 25 to roll in the wavy groove, which will drive the upper sliding seat 26 to drive the sliding rod 17 to move up and down. In turn, the unblocking block 20 will be driven up and down through the unblocking rod 19, which can quickly unblock the material into the inlet pipe 5 and prevent the material from accumulating and blocking. The limit ring 27 works in conjunction with the elasticity of the spring 28 to ensure a stable fit between the upper sliding seat 26 and the roller 25.

[0032] The bottom end of the sliding rod 17 is provided with a first threaded groove, and several first bolts 29 are threadedly installed on the lower sliding frame 18. The first bolts 29 and the first threaded groove are used in conjunction. By using the first bolts 29 and the first threaded groove in conjunction, the lower sliding frame 18 and the sliding rod 17 can be easily disassembled and assembled, which facilitates the disassembly and maintenance of the unblocking block 20.

[0033] A support frame 30 is movably installed inside the feeding processing housing 3. An insert strip 32 is fixedly installed on the inner wall of the support frame 30. A cleaning brush 31 is inserted into the outer surface of the insert strip 32. Several second bolts 33 are threaded on the cleaning brush 31. Several second threaded grooves are opened on the insert strip 32 for the second bolts 33 to be screwed in. The support frame 30 is used in conjunction with the insert strip 32 and the cleaning brush 31. The cleaning brush 31 can clean the centrifuge screen 16 and prevent the screen holes of the centrifuge screen 16 from becoming clogged. The setting of the second bolts 33 can make it easy to disassemble and assemble the cleaning brush 31, which is convenient for subsequent disassembly and maintenance.

[0034] A rotating ring 35 is rotatably mounted on the inner wall of the support frame 30. Several guide holes are opened on the rotating ring 35. Several guide posts 38 are fixedly mounted on the lower surface of the centrifuge mesh cylinder 16. The guide posts 38 are used in conjunction with the guide holes. By using the rotating ring 35 in conjunction with the guide posts 38 inserted into the guide holes, the centrifuge mesh cylinder 16 can be rotated and supported, so that the centrifuge mesh cylinder 16 has good stability during rotation and will not shake.

[0035] A mounting bracket 36 is fixedly installed at the bottom of the rotating shaft 15. Several third threaded grooves are opened on the lower surface of the mounting bracket 36. Several third bolts 37 are threaded on the bottom of the centrifugal screen cylinder 16. The third bolts 37 and the third threaded grooves are used in conjunction. The mounting bracket 36 on the rotating shaft 15 and the centrifugal screen cylinder 16 can be assembled by using the third bolts 37. The assembly structure is simple and convenient for subsequent disassembly and assembly of the centrifugal screen cylinder 16.

[0036] A trapezoidal limiting plate 34 is fixedly installed on the side of the support frame 30. The inner wall of the feeding processing housing 3 is provided with a trapezoidal limiting groove for the trapezoidal limiting plate 34 to be inserted. By inserting the trapezoidal limiting plate 34 into the trapezoidal limiting groove, the support frame 30 can be limited, preventing the support frame 30 from shaking, thereby ensuring the good stability of the centrifugal screen cylinder 16.

[0037] A support frame 23 is fixedly installed on the outer surface of the filter screen 22. Several fixing screws 39 are fixedly installed on the upper surface of the discharge processing housing 4. Several through holes are opened on the support frame 23 and the second housing cover 24. The fixing screws 39 pass through the through holes and the fixing nuts 40 are threaded on the outer surface of the fixing screws 39. The fixing nuts 40 are attached to the upper surface of the second housing cover 24. By using the support frame 23 in conjunction with the fixing screws 39 and the fixing nuts 40, the filter screen 22 and the second housing cover 24 can be stably locked to the discharge processing housing 4.

[0038] The present invention discloses a dredging method for a multi-stage cyclone ecological sediment separation device, comprising the following steps: S1. The ecological mud and sand to be treated is injected into the feed treatment shell 3 through the material inlet pipe 13. The motor 14 starts and drives the rotating shaft 15 to drive the centrifugal screen 16 to rotate. The rotation of the centrifugal screen 16 is used to achieve pre-treatment centrifugation. The material after being thrown out is injected into the cyclone separator 2 at the front position through the inlet pipe 5. S2. The sediment separated by the hydrocyclone separator 2 flows downward and is pumped by the sediment pump 6 to the second hydrocyclone separator 2. This process is repeated through several hydrocyclone separators 2 to achieve multi-stage hydrocyclone separation. The separated sediment is then transported to the three-way pipe 7. The turbidity sensor 8 detects the turbidity and, if the turbidity meets the standard, controls the solenoid valve 9 at the free port of the three-way pipe 7 to open and discharge the sediment. If the turbidity does not meet the standard, controls the solenoid valve 9 at the connection point of the three-way pipe 7 with the foremost sediment pump 6 to open and start the corresponding sediment pump 6, thus achieving the recirculation and hydrocyclone separation of the sediment. S3. During the separation process, the overflow water flows out from the overflow pipe 10 and is transported to the discharge processing shell 4 through the connecting pipe 11. After being filtered again by the filter screen 22, it is discharged from the outlet pipe 21. S4. When the motor 14 drives the rotating shaft 15 to rotate, it will drive the roller 25 to rotate synchronously. The roller 25 rolls in the wave-shaped groove on the upper sliding seat 26, which will drive the upper sliding seat 26 to move up and down. In turn, through the sliding rod 17 and the lower sliding frame 18, the unblocking rod 19 drives the unblocking block 20 to move up and down reciprocally, so that the material mud and sand can quickly enter the inlet pipe 5 to avoid accumulation and blockage. S5. At the same time, during the rotation of the centrifugal mesh cylinder 16, the cleaning brush 31 can clean the centrifugal mesh cylinder 16 to prevent the mesh holes of the centrifugal mesh cylinder 16 from becoming blocked.

[0039] The above are merely specific embodiments of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention. Any other aspects not described in detail are prior art.

Claims

1. A multi-stage cyclonic ecological sediment separation device, characterized in that, Include: Rack (1); A number of cyclone separators (2) are installed on the rack (1), and a number of the cyclone separators (2) are provided with a silt pump (6) on one side, and the cyclone separator (2) at the most front position is connected and communicated with the inlet pipe (5) at the top, and the cyclone separator (2) at the last position is connected and communicated with the tee pipe (7) at the bottom, one port of the tee pipe (7) is provided with a turbidity sensor (8), and the other two ports of the tee pipe (7) are provided with electromagnetic valves (9), and the inlet and outlet of the silt pump (6) at the most front position are communicated with one end of the tee pipe (7) and the inlet pipe (5) respectively, and the inlet and outlet of the silt pump (6) at the rear position are communicated with the bottom and top of the adjacent two cyclone separators (2) respectively, and the top of the cyclone separator (2) is connected and communicated with the overflow pipe (10), and a plurality of overflow pipes (10) are connected and communicated with the same communication pipe (11); The feed processing shell (3) is installed on the rack (1) and communicated with the inlet pipe (5), the first shell cover (12) is installed on the feed processing shell (3), the material inlet pipe (13) is installed on the first shell cover (12), the motor (14) is fixedly installed on the surface of the first shell cover (12), the output shaft (15) of the motor (14) is fixedly installed on the output shaft (15), the centrifugal screen cylinder (16) is detachably installed on the bottom of the output shaft (15) extending into the feed processing shell (3), a plurality of sliding rods (17) are slidably arranged on the first shell cover (12), the lower sliding frame (18) is detachably installed on the bottom of the sliding rod (17), the dredging rod (19) is fixedly installed on the lower surface of the lower sliding frame (18), the dredging block (20) is fixedly installed on the bottom of the dredging rod (19), and the dredging block (20) is used in cooperation with the inlet pipe (5); The discharge treatment shell (4) is installed on the rack (1), the outlet pipe (21) is installed on the side of the discharge treatment shell (4), the filter screen (22) is inserted into the discharge treatment shell (4), and the second shell cover (24) is detachably installed on the discharge treatment shell (4). The second shell cover (24) is communicated with the communication pipe (11).

2. The multi-stage cyclonic ecological sediment separation apparatus according to claim 1, characterized in that: The outer surface of the rotating shaft (15) is fixedly installed with a roller (25), the top of the sliding rod (17) is fixedly installed with an upper sliding seat (26), the upper surface of the upper sliding seat (26) has a wave-shaped wheel groove, the roller (25) is rolled and fitted on the inner wall of the wave-shaped wheel groove, the outer surface of the sliding rod (17) is fixedly installed with a limiting ring (27), and the limiting ring (27) is fixedly installed between the first shell cover (12) and the spring (28).

3. The multi-stage cyclonic ecological sediment separation apparatus according to claim 2, characterized in that: The bottom of the sliding rod (17) is provided with a first threaded groove, and a plurality of first bolts (29) are threadedly installed on the lower sliding frame (18). The first threaded groove is used in cooperation with the first threaded groove.

4. The multi-stage cyclonic ecological sediment separation apparatus according to claim 3, wherein: The support frame (30) is internally provided with a support frame (30), and the inner wall of the support frame (30) is fixedly installed with an insert strip (32). The outer surface of the insert strip (32) is provided with a cleaning brush (31), and a plurality of second bolts (33) are threadedly installed on the cleaning brush (31). A plurality of second threaded grooves are formed in the insert strip (32) for the second bolts (33) to be screwed into.

5. The multi-stage cyclonic ecological sediment separation apparatus according to claim 4, wherein: The inner wall of the support frame (30) is rotatably installed with a rotating ring (35), and a plurality of guide holes are formed in the rotating ring (35). A plurality of guide columns (38) are fixedly installed on the lower surface of the centrifugal screen cylinder (16), and the guide columns (38) are used in cooperation with the guide holes.

6. The multi-stage cyclonic ecological sediment separation apparatus according to claim 5, wherein: The bottom end of the rotating shaft (15) is fixedly installed with a mounting bracket (36), and a plurality of third threaded grooves are formed in the lower surface of the mounting bracket (36). A plurality of third bolts (37) are threadedly installed on the centrifugal screen cylinder (16), and the third bolts (37) are used in cooperation with the third threaded grooves.

7. The multi-stage cyclonic ecological sediment separation apparatus according to claim 6, characterized in that: The side surface of the support frame (30) is fixedly installed with a trapezoidal limiting plate (34), and the inner wall of the feed treatment shell (3) is formed with a trapezoidal limiting groove for the trapezoidal limiting plate (34) to be inserted.

8. The multi-stage cyclonic ecological sediment separation apparatus according to claim 7, characterized in that: The outer surface of the filter screen (22) is fixedly installed with a support frame (23), and the upper surface of the discharge treatment shell (4) is fixedly installed with a plurality of fixed screws (39). A plurality of through holes are formed in the support frame (23) and the second shell cover (24), the fixed screws (39) pass through the through holes, and the outer surface of the fixed screws (39) is threadedly installed with a fixed nut (40). The fixed nut (40) is arranged on the upper surface of the second shell cover (24).

9. A method of dredging using the multi-stage cyclonic ecological sediment separation device according to any one of claims 1 to 8, characterized in that, The steps include: S1, the untreated ecological silt is injected into the feed treatment shell (3) from the material inlet pipe (13), the motor (14) is started to drive the rotating shaft (15) to drive the centrifugal screen cylinder (16) to rotate, and the pretreatment centrifugation is realized by the rotation of the centrifugal screen cylinder (16). The material after being thrown out is injected into the cyclone separator (2) at the most front position from the inlet pipe (5); S2, the silt after being separated by the cyclone separator (2) flows downward, is extracted by the silt pump (6) and is conveyed into the second cyclone separator (2), so that multi-stage cyclone separation is realized by the plurality of cyclone separators (2), and the separated silt is conveyed to the three-way pipe (7); S3, the overflow water overflowed during the separation process flows out from the overflow pipe (10) and is conveyed into the discharge treatment shell (4) through the communication pipe (11), is filtered again through the filter screen (22) and is discharged from the outlet pipe (21); S4, when the motor (14) drives the rotating shaft (15) to rotate, the roller (25) is driven to rotate synchronously, the roller (25) rolls in the wavy groove on the upper sliding seat (26) to drive the upper sliding seat (26) to move up and down, and then drives the dredging rod (19) to drive the dredging block (20) to reciprocate up and down through the sliding rod (17) and the lower sliding frame (18), so that the material and silt can quickly enter the inlet pipe (5), avoiding accumulation and blockage; S5, at the same time, the cleaning brush (31) can clean the centrifugal screen cylinder (16) during rotation to prevent the screen holes of the centrifugal screen cylinder (16) from being blocked.

10. The method of claim 9, wherein, In the step S2, the turbidity is detected by the turbidity sensor (8), if the turbidity detection is qualified, the electromagnetic valve (9) at the free port position of the three-way pipe (7) is opened and discharged; if the turbidity detection is not qualified, the electromagnetic valve (9) at the position of the three-way pipe (7) connected with the frontmost silt pump (6) is opened and the corresponding silt pump (6) is started, realizing the silt recirculation and conveying cyclone separation.

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