Solid-liquid separator for livestock and poultry breeding wastewater treatment

Abstract

The invention discloses a solid-liquid separator for livestock and poultry breeding wastewater treatment, and relates to the technical field of solid-liquid separators, the solid-liquid separator comprises a base, the top of the base is fixedly connected with a collection box, the top of the collection box is fixedly connected with a separation box, the top edge of the separation box is inserted with a feed pipe, and the top of the separation box is provided with a spreading port. According to the solid-liquid separator for livestock and poultry breeding wastewater treatment, an incomplete gear and a fixed block are driven by a moving block to move downwards along the surface of a separation plate, vibration is generated when teeth on the top of the incomplete gear are separated from a rack, and due to the fact that the incomplete gear and the fixed block move all the time, vibration is generated; once teeth on the top of the incomplete gear make contact with a rack, separation is conducted again, continuous vibration is generated, livestock and poultry manure solids blocked in separation holes in the surface of a separation plate are vibrated to fall to the bottom of the separation plate, and the effect of improving the livestock and poultry breeding wastewater solid waste separation efficiency of the separation plate is achieved.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separator technology, and in particular to a solid-liquid separator for treating livestock and poultry breeding wastewater. Background Technology

[0002] Solid-liquid separator technology is increasingly widely used in the treatment of livestock and poultry breeding wastewater, becoming an important link in the sustainable development of animal husbandry. This technology uses a water pump to draw wastewater into the separator, where solids and liquids are effectively separated under strong force. With increasingly stringent environmental regulations, solid-liquid separator technology continues to develop, mainly in terms of separation efficiency and ease of operation. Modern solid-liquid separators use advanced screen materials and designs, enabling them to quickly process large amounts of wastewater and promoting the green transformation of the breeding industry.

[0003] Existing solid-liquid separators still face some shortcomings in practical applications. Livestock and poultry breeding wastewater contains a large amount of livestock manure, which easily clogs the separation screen during the liquid separation process, directly leading to a decrease in the efficiency of solid-liquid separation. When the screen is clogged, solid matter cannot be discharged smoothly, and the flow of liquid is also affected. This not only reduces the working efficiency of the separator but may also damage the equipment. More seriously, filter clogging often requires manual cleaning, increasing the labor costs and management difficulty of the farm. In addition, due to the cumbersome cleaning process, the downtime of the separator may be prolonged, affecting the continuity and effectiveness of the overall wastewater treatment and failing to meet actual needs. Summary of the Invention

[0004] This invention discloses a solid-liquid separator for treating livestock and poultry breeding wastewater, aiming to solve some shortcomings of existing solid-liquid separators in practical applications. Livestock and poultry breeding wastewater contains a large amount of livestock manure, which easily clogs the separation screen during liquid separation, directly leading to a decrease in the efficiency of solid-liquid separation. When the screen is clogged, solid matter cannot be discharged smoothly, and the flow of liquid is also affected. This not only reduces the working efficiency of the separator but may also damage the equipment. More seriously, filter clogging often requires manual cleaning, increasing the labor costs and management difficulty of the farm. In addition, due to the cumbersome cleaning process, the downtime of the separator may be prolonged, affecting the continuity and effectiveness of the overall wastewater treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A solid-liquid separator for treating livestock and poultry breeding wastewater includes a base, a collection box fixedly connected to the top of the base, a separation box fixedly connected to the top of the collection box, a feed pipe inserted into the top edge of the separation box, a spreading port provided at the top of the separation box, a spreading roller rotatably connected to the inner wall of the top of the separation box, a separation plate fixedly connected to the top of the inner wall of the separation box, a plurality of separation holes provided on the upper surface of the separation plate, a conveying motor fixedly connected to one side of the separation box, a conveying screw provided at one end of the output shaft of the conveying motor, a closed cylinder provided at the bottom edge of the separation box, a pressure-bearing cylinder provided at one end of the closed cylinder, a discharge port provided at the bottom of the pressure-bearing cylinder, a discharge pipe inserted into one side of the collection box, and a solenoid valve provided at one end of the feed pipe and the discharge pipe respectively. A transmission mechanism is installed on the other side of the separation box. The transmission mechanism includes a belt, which drives the spreading roller to rotate using a conveyor screw and the belt. A cleaning mechanism is installed on one side of the separation box at the bottom of the separation plate. The cleaning mechanism works in conjunction with the spreading roller and the conveying screw to clean multiple separation holes on the surface of the separation plate and prevent livestock and poultry manure from clogging the separation holes. The collection box is equipped with a secondary separation mechanism, which includes a separation roller. The secondary separation mechanism works in conjunction with the transmission mechanism to drive the separation roller to rotate via a belt, thereby performing secondary separation of solid impurities in the wastewater.

[0006] The transmission mechanism includes a third pulley fixedly connected to one end of the conveying screw. One end of the conveying screw passes through the pressure cylinder and extends to the outside of the pressure cylinder. The third pulley is located outside the pressure cylinder. One end of the spreading roller is fixedly connected to a first pulley. A rotating rod is rotatably connected to the outer wall of the other side of the separation box.

[0007] One end of the rotating rod is fixedly connected to a second pulley, and the belt is disposed between the first pulley, the second pulley and the third pulley, and the belt contacts the first pulley, the second pulley and the third pulley respectively.

[0008] In a preferred embodiment, the cleaning mechanism includes an auxiliary motor fixedly connected to the outer wall of the other side of the separation box. One end of the output shaft of the auxiliary motor is fixedly connected to a threaded rod, and one end of the threaded rod is threadedly connected to a moving block. A scraper and an incomplete gear are rotatably connected to one side of the moving block.

[0009] The scraper is located above the separating plate, and the incomplete gear is located below the separating plate. A torsion spring is provided between the incomplete gear and the moving block, and the top of the incomplete gear has seven teeth.

[0010] A rack is fixedly connected to the bottom edge of the separation plate near the position of the incomplete gear. The incomplete gear meshes with the rack. A fixing block is fixedly connected to one side of the incomplete gear. A sliding rod is provided at the bottom of the fixing block. An impact block is slidably connected to one end of the sliding rod. An impact spring is sleeved at the bottom end of the sliding rod.

[0011] The impact spring is in a compressed state, the torsion spring keeps the fixed block perpendicular to the rack, and the scraper is in a natural rotation state. Due to gravity, the bottom edge of the scraper contacts the upper surface of the separation plate.

[0012] A movement port is provided on the other side of the separation box. One side of the incomplete gear passes through the movement port and is rotatably connected to the moving block. A guide rod is fixedly connected to the outer wall of one side of the separation box. One end of the guide rod is slidably connected to the other end of the scraper.

[0013] In a preferred embodiment, the secondary separation mechanism includes a screening plate fixedly connected inside the collection box, one end of the screening plate is provided with an arc-shaped groove, one end of the rotating rod is provided with a first gear near the second pulley, and one end of the separation roller is provided with a second gear.

[0014] The second gear meshes with the first gear, and the upper surface of the screening plate and the arc groove is provided with a plurality of screening holes. An auxiliary box is fixedly connected to the outer wall of the collection box near the separation roller.

[0015] As can be seen from the above, the solid-liquid separator for treating livestock and poultry breeding wastewater provided by the present invention has the following technical effects.

[0016] Firstly, the moving block drives the incomplete gear and the fixed block to move downwards along the surface of the separating plate, causing the incomplete gear to mesh with the rack. This causes the incomplete gear and the fixed block to rotate. When the teeth at the top of the incomplete gear separate from the rack, vibration is generated. The torsion spring returns the incomplete gear and the fixed block to their original position. Since the incomplete gear and the fixed block are constantly moving, the teeth at the top of the incomplete gear will separate again once they come into contact with the rack, generating continuous vibration that causes the solid waste of livestock and poultry manure that is blocked in the separation holes on the surface of the separating plate to fall to the bottom of the separating plate. This improves the efficiency of the separating plate in separating solid waste from livestock and poultry breeding wastewater.

[0017] Secondly, during each rotation of the fixed block, the centrifugal force causes the impact block to slide on the slide rod and compress the impact spring. When the fixed block stops rotating, the impact spring pushes the impact block back to its original position. The impact block hits the fixed block, causing the separation plate to vibrate secondary, increasing the vibration frequency of the separation plate and further reducing the blockage of the separation holes on the separation plate.

[0018] Thirdly, some solid livestock and poultry manure falls onto the upper surface of the screening plate along with the liquid. The solid and liquid are further separated through the screening holes on the upper surface of the screening plate. The solid particles slide into the inside of the arc-shaped trough. The second pulley and the first gear drive the second gear and the separation roller to rotate, thereby pushing the solid livestock and poultry manure particles inside the arc-shaped trough into the auxiliary box. The treated liquid is discharged through the discharge pipe, which achieves the effect of thoroughly separating solids and liquids in livestock and poultry breeding wastewater. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the isometric structure proposed in this invention.

[0020] Figure 2 This is a side view schematic diagram of the structure proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the separation plate structure proposed in this invention.

[0023] Figure 5 This is a schematic diagram of the internal structure proposed in this invention.

[0024] Figure 6 This is a schematic diagram of a partial structure proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the moving block structure proposed in this invention.

[0026] Figure 8 This is a schematic diagram of the incomplete gear structure proposed in this invention.

[0027] In the diagram: 1. Base; 2. Collection box; 3. Conveyor motor; 4. Auxiliary box; 5. Separator box; 6. Guide rod; 7. Spreading roller; 8. Feed pipe; 9. Spreading port; 10. Scraper; 11. Separator plate; 12. Pressure cylinder; 13. Enclosed cylinder; 14. Conveyor screw; 15. Moving port; 16. Screening plate; 17. Discharge pipe; 18. Arc groove; 19. Separator roller; 20. Rack; 21. Impact block; 22. Incomplete gear; 23. Moving block; 24. Fixed block; 25. Impact spring; 26. Auxiliary motor; 27. First pulley; 28. Belt; 29. ​​First gear; 30. Second pulley; 31. Second gear; 32. Third pulley; 33. Discharge port; 34. Rotating rod; 35. Threaded rod. Detailed Implementation

[0028] 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.

[0029] The solid-liquid separator for livestock and poultry breeding wastewater treatment disclosed in this invention is mainly applicable to the shortcomings of existing solid-liquid separators in practical applications. Livestock and poultry breeding wastewater contains a large amount of livestock manure, which easily clogs the separation screen during liquid separation, directly leading to a decrease in the efficiency of solid-liquid separation. When the screen is clogged, solid matter cannot be discharged smoothly, and the flow of liquid is also affected. This not only reduces the working efficiency of the separator but may also damage the equipment. More seriously, filter blockage often requires manual cleaning, increasing the labor costs and management difficulty of the farm. In addition, due to the cumbersome cleaning process, the downtime of the separator may be prolonged, affecting the continuity and effectiveness of the overall wastewater treatment.

[0030] Reference Figure 1 — Figure 8 A solid-liquid separator for treating livestock and poultry breeding wastewater includes a base 1, a collection box 2 fixedly connected to the top of the base 1, a separation box 5 fixedly connected to the top of the collection box 2, a feed pipe 8 inserted into the top edge of the separation box 5, a spreading port 9 provided on the top of the separation box 5, a spreading roller 7 rotatably connected to the inner wall of the top of the separation box 5, a separation plate 11 fixedly connected to the top of the inner wall of the separation box 5, a plurality of separation holes provided on the upper surface of the separation plate 11, a conveying motor 3 fixedly connected to one side of the separation box 5, a conveying screw 14 provided at one end of the output shaft of the conveying motor 3, a closed cylinder 13 provided at the bottom edge of the separation box 5, a pressure cylinder 12 provided at one end of the closed cylinder 13, a discharge port 33 provided at the bottom of the pressure cylinder 12, a discharge pipe 17 inserted into one side of the collection box 2, and a solenoid valve provided at one end of the feed pipe 8 and the discharge pipe 17 respectively. A transmission mechanism is installed on the other side of the separation box 5. The transmission mechanism includes a belt 28, which drives the spreading roller 7 to rotate by the conveying screw 14 and the belt 28. A cleaning mechanism is installed on one side of the separation box 5 at the bottom of the separation plate 11. The cleaning mechanism works in conjunction with the spreading roller 7 and the conveying screw 14 to clean multiple separation holes on the surface of the separation plate 11 and prevent livestock and poultry manure from clogging the separation holes. The collection box 2 is equipped with a secondary separation mechanism, which includes a separation roller 19. The secondary separation mechanism works in conjunction with the transmission mechanism and drives the separation roller 19 to rotate via the belt 28 to perform secondary separation of solid impurities in the wastewater.

[0031] The transmission mechanism includes a third pulley 32 fixedly connected to one end of the conveying screw 14. One end of the conveying screw 14 passes through the pressure cylinder 12 and extends to the outside of the pressure cylinder 12. The third pulley 32 is located outside the pressure cylinder 12. One end of the spreading roller 7 is fixedly connected to a first pulley 27. A rotating rod 34 is rotatably connected to the outer wall of the other side of the separating box 5.

[0032] One end of the rotating rod 34 is fixedly connected to the second pulley 30. The belt 28 is disposed between the first pulley 27, the second pulley 30 and the third pulley 32. The belt 28 contacts the first pulley 27, the second pulley 30 and the third pulley 32 respectively.

[0033] In this embodiment, a water pump is used to draw wastewater generated from livestock and poultry farming into the interior of the separation box 5 through the feed pipe 8. The wastewater enters the spreading port 9. The transmission motor 3 is started to drive the transmission screw 14 and the third pulley 32 to rotate. The first pulley 27 and the spreading roller 7 are driven to rotate through the belt 28. The threads at both ends of the spreading roller 7 rotate in opposite directions. During the rotation of the spreading roller 7, the wastewater is continuously pushed to both ends of the separation box 5 to prevent solid impurities in the wastewater from clogging the gap at the bottom of the spreading roller 7.

[0034] Furthermore, the wastewater flows evenly onto the upper surface of the separation plate 11. After being separated by the upper surface of the separation plate 11, the solids remain on the upper surface of the separation plate 11, while the liquid portion enters the bottom of the separation plate 11 through the separation holes. The solids are livestock and poultry manure. The livestock and poultry manure solids roll to the bottom position of the separation plate 11 and are conveyed forward by the rotation of the conveying screw 14. The livestock and poultry manure solids enter the interior of the pressure cylinder 12 and are squeezed out from the discharge port 33, thus achieving the effect of solid-liquid separation of livestock and poultry breeding wastewater.

[0035] Reference Figure 1 , Figure 4 , Figure 6 and Figure 8 In a preferred embodiment, the cleaning mechanism includes an auxiliary motor 26 fixedly connected to the outer wall of the other side of the separation box 5. One end of the output shaft of the auxiliary motor 26 is fixedly connected to a threaded rod 35, and one end of the threaded rod 35 is threadedly connected to a moving block 23. A scraper 10 and an incomplete gear 22 are rotatably connected to one side of the moving block 23.

[0036] The scraper 10 is located above the separating plate 11, and the incomplete gear 22 is located below the separating plate 11. A torsion spring is provided between the incomplete gear 22 and the moving block 23. The top of the incomplete gear 22 is provided with seven teeth.

[0037] A rack 20 is fixedly connected to the bottom edge of the separation plate 11 near the position of the incomplete gear 22. The incomplete gear 22 meshes with the rack 20. A fixing block 24 is fixedly connected to one side of the incomplete gear 22. A slide rod is provided at the bottom of the fixing block 24. An impact block 21 is slidably connected to one end of the slide rod. An impact spring 25 is sleeved at the bottom end of the slide rod.

[0038] The impact spring 25 is in a compressed state, the torsion spring keeps the fixed block 24 perpendicular to the rack 20, and the scraper 10 is in a natural rotation state. Due to gravity, the bottom edge of the scraper 10 contacts the upper surface of the separation plate 11.

[0039] On the other side of the separation box 5, there is a movement port 15. One side of the incomplete gear 22 passes through the movement port 15 and is rotatably connected to the movement block 23. A guide rod 6 is fixedly connected to one side of the outer wall of the separation box 5. One end of the guide rod 6 is slidably connected to the other end of the scraper 10.

[0040] It is also necessary to explain that during the process of wastewater flowing through the upper surface of the separation plate 11, some livestock and poultry manure will remain on the upper surface of the separation plate 11. The auxiliary motor 26 drives the threaded rod 35 to rotate, thereby driving the moving block 23 and the scraper 10 to move downward along the surface of the separation plate 11, scraping off the solid livestock and poultry manure remaining on the upper surface of the separation plate 11. When the scraper 10 reaches the bottom edge of the separation plate 11, the auxiliary motor 26 reverses and drives the moving block 23 and the scraper 10 back to the top position of the separation plate 11.

[0041] In this embodiment, since the scraper 10 is in a natural rotation state, during the process of the scraper 10 returning to the top of the separation plate 11, the solid livestock and poultry manure on the upper surface of the separation plate 11 will squeeze the lower surface of the scraper 10, causing the scraper 10 to rotate. As a result, the scraper 10 will not carry the solid livestock and poultry manure during the process of returning to the top of the separation plate 11. Each time the scraper 10 scrapes the upper surface of the separation plate 11, some solid livestock and poultry manure will be squeezed into the separation hole, thereby partially blocking the separation hole.

[0042] Furthermore, the moving block 23 drives the incomplete gear 22 and the fixed block 24 to move downwards along the surface of the separating plate 11, causing the incomplete gear 22 to mesh with the rack 20, thereby causing the incomplete gear 22 and the fixed block 24 to rotate. Since the number of teeth at the top of the incomplete gear 22 is limited, vibration is generated when the teeth at the top of the incomplete gear 22 separate from the rack 20. The torsion spring causes the incomplete gear 22 and the fixed block 24 to return to their original positions. Since the incomplete gear 22 and the fixed block 24 are constantly moving, the teeth at the top of the incomplete gear 22 will separate again once they come into contact with the rack 20, generating continuous vibration that causes the solid waste of livestock and poultry manure blocked in the separation holes on the surface of the separating plate 11 to fall to the bottom of the separating plate 11, thereby improving the efficiency of the separating plate 11 in separating solid waste from livestock and poultry breeding wastewater.

[0043] Furthermore, during each rotation of the fixed block 24, the centrifugal force causes the impact block 21 to slide on the slide rod and compress the impact spring 25. When the fixed block 24 stops rotating, the impact spring 25 pushes the impact block 21 back to its original position. The impact block 21 impacts the fixed block 24, causing the separation plate 11 to vibrate secondaryly, increasing the vibration frequency of the separation plate 11, and further reducing the blockage of the separation holes on the separation plate 11.

[0044] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 In a preferred embodiment, the secondary separation mechanism includes a screening plate 16 fixedly connected inside the collection box 2. One end of the screening plate 16 is provided with an arc-shaped groove 18, one end of the rotating rod 34 is provided with a first gear 29 near the second pulley 30, and one end of the separation roller 19 is provided with a second gear 31.

[0045] The second gear 31 meshes with the first gear 29. The upper surfaces of the screening plate 16 and the arc groove 18 are provided with multiple screening holes. An auxiliary box 4 is fixedly connected to the outer wall of the collection box 2 near the separation roller 19.

[0046] In this embodiment, some solid livestock and poultry manure falls onto the upper surface of the screening plate 16 along with the liquid. The solid and liquid are further separated through the screening holes on the upper surface of the screening plate 16. The solid particles slide into the interior of the arc-shaped groove 18. The second pulley 30 and the first gear 29 drive the second gear 31 and the separation roller 19 to rotate, thereby pushing the solid livestock and poultry manure particles inside the arc-shaped groove 18 into the interior of the auxiliary box 4. The treated liquid is discharged through the discharge pipe 17, which achieves the effect of thoroughly separating the solid and liquid in the livestock and poultry breeding wastewater.

[0047] Working Principle: During operation, a water pump draws wastewater from livestock and poultry farming into the separation tank 5 through the feed pipe 8. The wastewater enters the spreading port 9. The transmission motor 3 is started, driving the transmission screw 14 and the third pulley 32 to rotate. This, in turn, drives the first pulley 27 and the spreading roller 7 via the belt 28. The threads at both ends of the spreading roller 7 rotate in opposite directions. As the spreading roller 7 rotates, it continuously pushes the wastewater towards both ends of the separation tank 5, preventing solid impurities in the wastewater from clogging the gaps at the bottom of the spreading roller 7. This allows the wastewater to flow evenly onto the upper surface of the separation plate 11. After separation by the upper surface of the separation plate 11, solids remain on the upper surface, while the liquid portion enters the bottom of the separation plate 11 through the separation holes. The solids are livestock and poultry manure. The solids roll to the bottom of the separation plate 11, and are conveyed forward by the rotation of the conveying screw 14. The solids enter the interior of the pressure cylinder 12, where they are squeezed out from the discharge port 33, achieving solid-liquid separation of livestock and poultry breeding wastewater. As the wastewater flows over the upper surface of the separation plate 11, some of the livestock and poultry manure remains on the upper surface. The auxiliary motor 26 drives the threaded rod 35 to rotate, thereby driving the moving block 23 and scraper 10 to move downwards along the surface of the separation plate 11, scraping off the solids of livestock and poultry manure remaining on the upper surface of the separation plate 11. When the scraper 10 reaches the bottom edge of the separation plate 11, the auxiliary motor 26 reverses, driving the moving block 23 and scraper 10 back. Upon reaching the top of the separating plate 11, since the scraper 10 is in a natural rotation state, as the scraper 10 returns to the top of the separating plate 11, the solid livestock and poultry manure on the upper surface of the separating plate 11 will squeeze the lower surface of the scraper 10, causing the scraper 10 to rotate. This prevents the scraper 10 from carrying the solid livestock and poultry manure back to the top of the separating plate 11. Each time the scraper 10 scrapes the upper surface of the separating plate 11, some solid livestock and poultry manure is squeezed into the separating holes, thus partially blocking them. The moving block 23 drives the incomplete gear 22 and the fixed block 24 to move downwards along the surface of the separating plate 11, causing the incomplete gear 22 to mesh with the rack 20, thereby causing the incomplete gear 22 and the fixed block 24 to rotate. Because the incomplete gear 22... The number of teeth at the top is limited. When the teeth at the top of the incomplete gear 22 separate from the rack 20, vibration is generated. The torsion spring causes the incomplete gear 22 and the fixed block 24 to return to their original positions. Since the incomplete gear 22 and the fixed block 24 are constantly moving, the teeth at the top of the incomplete gear 22 will separate again once they come into contact with the rack 20, generating continuous vibration that causes the solid waste of livestock and poultry manure blocked in the separation holes on the surface of the separation plate 11 to fall to the bottom of the separation plate 11. This improves the efficiency of the separation plate 11 in separating solid waste from livestock and poultry wastewater. During each rotation of the fixed block 24, centrifugal force causes the impact block 21 to slide on the slide rod and compress the impact spring 25. When the fixed block 24 stops rotating, the impact spring 25 pushes the impact block 21 back to its original position.The impact block 21 strikes the fixed block 24, causing secondary vibration of the separation plate 11, increasing the vibration frequency of the separation plate 11, and further reducing the clogging of the separation holes on the separation plate 11. Some solid livestock and poultry manure falls onto the upper surface of the screening plate 16 along with the liquid, and further separates the solid and liquid through the screening holes on the upper surface of the screening plate 16. The solid particles slide into the interior of the arc-shaped groove 18, and are driven by the second pulley 30 and the first gear 29 to rotate the second gear 31 and the separation roller 19. This causes the separation roller 19 to push the solid livestock and poultry manure particles inside the arc-shaped groove 18 into the interior of the auxiliary box 4. The treated liquid is discharged through the discharge pipe 17, achieving the effect of thoroughly separating the solid and liquid in livestock and poultry breeding wastewater.

[0048] 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 solid-liquid separator for treating livestock and poultry breeding wastewater, comprising a base (1), characterized in that, A collection box (2) is fixedly connected to the top of the base (1), a separation box (5) is fixedly connected to the top of the collection box (2), a feed pipe (8) is inserted into the top edge of the separation box (5), a spreading port (9) is provided on the top of the separation box (5), a spreading roller (7) is rotatably connected to the top inner wall of the separation box (5), a separation plate (11) is fixedly connected to the top of the inner wall of the separation box (5), a plurality of separation holes are provided on the upper surface of the separation plate (11), a conveying motor (3) is fixedly connected to one side of the separation box (5), a conveying screw (14) is provided at one end of the output shaft of the conveying motor (3), and a closed cylinder (13) is provided at the bottom edge of the separation box (5). A transmission mechanism is installed on the other side of the separation box (5). The transmission mechanism includes a belt (28), which drives the spreading roller (7) to rotate by means of the transmission screw (14) and the belt (28). A cleaning mechanism is installed on one side of the separation box (5) at the bottom of the separation plate (11). The cleaning mechanism works in conjunction with the spreading roller (7) and the conveying screw (14) to clean multiple separation holes on the surface of the separation plate (11) and prevent livestock and poultry manure from clogging the separation holes. The collection box (2) is equipped with a secondary separation mechanism, which includes a separation roller (19). The secondary separation mechanism works in conjunction with the transmission mechanism to drive the separation roller (19) to rotate via a belt (28) to perform secondary separation of solid impurities in the wastewater after separation.

2. The solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 1, characterized in that, The transmission mechanism includes a third pulley (32) fixedly connected to one end of the conveying screw (14). One end of the conveying screw (14) passes through the pressure cylinder (12) and extends to the outside of the pressure cylinder (12). The third pulley (32) is located outside the pressure cylinder (12). One end of the spreading roller (7) is fixedly connected to a first pulley (27). A rotating rod (34) is rotatably connected to the outer wall of the other side of the separating box (5).

3. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 2, characterized in that, One end of the rotating rod (34) is fixedly connected to a second pulley (30), and the belt (28) is disposed between the first pulley (27), the second pulley (30) and the third pulley (32), and the belt (28) contacts the first pulley (27), the second pulley (30) and the third pulley (32) respectively.

4. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 3, characterized in that, The cleaning mechanism includes an auxiliary motor (26) fixedly connected to the outer wall of the other side of the separation box (5). One end of the output shaft of the auxiliary motor (26) is fixedly connected to a threaded rod (35). One end of the threaded rod (35) is threadedly connected to a moving block (23). A scraper (10) and an incomplete gear (22) are rotatably connected to one side of the moving block (23).

5. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 4, characterized in that, One end of the closed cylinder (13) is provided with a pressure cylinder (12), and the bottom of the pressure cylinder (12) is provided with a discharge port (33). A discharge pipe (17) is inserted into one side of the collection box (2). A solenoid valve is provided at one end of the feed pipe (8) and the discharge pipe (17). The scraper (10) is located above the separation plate (11), and the incomplete gear (22) is located below the separation plate (11). A torsion spring is provided between the incomplete gear (22) and the moving block (23). The top of the incomplete gear (22) is provided with seven teeth.

6. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 5, characterized in that, A rack (20) is fixedly connected to the bottom edge of the separation plate (11) near the position of the incomplete gear (22). The incomplete gear (22) meshes with the rack (20). A fixing block (24) is fixedly connected to one side of the incomplete gear (22). A sliding rod is provided at the bottom of the fixing block (24). An impact block (21) is slidably connected to one end of the sliding rod. An impact spring (25) is sleeved at the bottom end of the sliding rod.

7. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 6, characterized in that, The impact spring (25) is in a compressed state, the torsion spring keeps the fixed block (24) perpendicular to the rack (20), the scraper (10) is in a natural rotation state, and due to gravity, the bottom edge of the scraper (10) contacts the upper surface of the separation plate (11).

8. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 7, characterized in that, The separation box (5) has a movement port (15) on the other side. One side of the incomplete gear (22) passes through the movement port (15) and is rotatably connected to the movement block (23). A guide rod (6) is fixedly connected to the outer wall of one side of the separation box (5). One end of the guide rod (6) is slidably connected to the other end of the scraper (10).

9. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 8, characterized in that, The secondary separation mechanism includes a sieve plate (16) fixedly connected inside the collection box (2), one end of the sieve plate (16) is provided with an arc groove (18), one end of the rotating rod (34) is provided with a first gear (29) near the second pulley (30), and one end of the separation roller (19) is provided with a second gear (31).

10. A solid-liquid separator for treating livestock and poultry breeding wastewater according to claim 9, characterized in that, The second gear (31) meshes with the first gear (29). The upper surfaces of the screening plate (16) and the arc groove (18) are provided with multiple screening holes. An auxiliary box (4) is fixedly connected to the outer wall of the collection box (2) near the separation roller (19).

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