Rural sewage multi-stage treatment device

Abstract

The invention belongs to the technical field of sewage treatment, and discloses a rural sewage multi-stage treatment device which comprises a secondary sedimentation tank, a beam bridge is fixedly connected to the outer wall of the top of the secondary sedimentation tank, a through hole communicated with the inner wall is formed in the outer wall of the top of the beam bridge, and a through hole communicated with the inner wall is formed in the inner wall of the through hole. The outer shaft sleeve is fixedly connected with the inner wall of the through hole, the inner shaft sleeve is fixedly connected with an outer-layer rotating pipe, extending frames are fixedly connected to the bottoms of the outer walls of the two sides of the outer-layer rotating pipe, polymerization scraping plates are fixedly connected to the outer walls of the bottoms of the extending frames, and a plurality of supporting springs are fixedly connected to the inner wall of the bottom of the first-stage screening pond. Through operation of a first operation motor in the working box, meshing connection of a first gear and a second gear is used for driving the outer-layer rotating pipe and the extending frames to rotate with the screening net plate as the axis, and the multiple gathering scraping plates on the extending frames on the two sides are distributed in a staggered and inclined mode, so that sludge can be gathered towards the center into a silt discharging valve pipe and then discharged.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to a rural sewage multi-stage treatment device. Background Art

[0002] At present, the vast majority of rural areas lack effective drainage and sewage treatment systems, resulting in domestic sewage being directly discharged into ponds or rivers without any treatment. After being mixed with human domestic water, these sewage will contain various chemical components, which is not conducive to direct irrigation of farmland and environmental nourishment, and will cause serious damage to the rural ecological environment. Therefore, the sewage flow needs to be further treated before being discharged.

[0003] For example, a rural sewage multi-stage treatment device proposed in the patent publication number CN116738929A can pre-filter and remove large-volume garbage in the sewage by setting an inlet filtering mechanism, can precipitate and remove large-specific gravity sludge and feces in the sewage by setting a sedimentation and impurity removal mechanism, can perform chemical dosing and adjustment treatment on the filtered sewage by setting a chemical dosing treatment mechanism to ensure the environmental protection of sewage discharge, and can automatically batch discharge liquid according to the liquid level of the sewage through an automatic chemical dosing mechanism, with little dependence on electrical equipment, easy to maintain, low equipment cost, and good use effect.

[0004] However, the traditional device still has the following problems when in use:

[0005] After screening out large-specific gravity solid sludge, the fine sand and gravel in the water flow will still accumulate a large amount of sediment impurities at the bottom of the pool after sedimentation. It is difficult for manual cleaning of the sediment at the bottom of the pool, and it is easy to block the circulation pipeline of the subsequent chemical dosing adjustment pool. Therefore, the sewage treatment device still needs to be improved. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a rural sewage multi-stage treatment device with good sediment screening and discharge effects.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A rural sewage multi-stage treatment device includes a secondary sedimentation tank. The top outer wall of the secondary sedimentation tank is fixedly connected with a beam bridge. A through hole communicating with the inner wall is opened on the top outer wall of the beam bridge. The inner wall of the through hole is provided with..., the outer shaft sleeve of... is fixedly connected with the inner wall of the through hole, the inner shaft sleeve of... is fixedly connected with an outer layer rotating pipe. Both bottom outer walls of the outer layer rotating pipe are fixedly connected with extension frames. The bottom outer wall of the extension frame is fixedly connected with a polymerization scraper. The bottom inner wall of the primary screening tank is fixedly connected with a plurality of support springs. The top outer walls of the plurality of support springs are fixedly connected with the same screening mesh plate. The screening mesh plate is provided with densely distributed mesh holes that communicate up and down. The bottom outer wall of the polymerization scraper is movably attached to the top outer wall of the screening mesh plate.

[0008] Preferably, a primary screening tank and a tertiary chemical dosing tank are respectively built on both sides of the secondary sedimentation tank. A screening grid is fixedly installed on the inner wall of the primary screening tank. The primary screening tank is fixedly connected to a primary pump pipe. A secondary pump pipe is fixedly connected between the primary screening tank and the secondary sedimentation tank. A tertiary pump pipe is fixedly connected between the secondary sedimentation tank and the tertiary chemical dosing tank. A discharge pump pipe is fixedly installed on the inner wall of the tertiary chemical dosing tank.

[0009] Preferably, a working box is fixedly connected to the outer wall of the top of the beam bridge. A first operating motor is fixedly connected to the inner wall of the working box. A first gear is rotatably connected to the bottom inner wall of the working box. The axis of the first operating motor is fixedly connected to the outer wall of the first gear. The top end of the outer rotating pipe passes through the bottom outer wall of the working box and is located inside the working box. A second gear is fixedly connected to the outer wall of the outer rotating pipe. The second gear is fixedly connected to the outer wall of the first gear.

[0010] Preferably, a middle layer knocking pipe is sleeved inside the outer rotating pipe. A ring plate is fixedly connected to the bottom outer wall of the middle layer knocking pipe. A sediment discharge valve pipe is fixedly connected to the axial center position of the screening mesh plate. One end of the sediment discharge valve pipe away from the screening mesh plate communicates with an external sewage pump tank on the outer wall. An elastic rubber strip is fixedly connected to the outer wall of the screening mesh plate. The outer wall of the elastic rubber strip is fixedly connected to the inner wall of the secondary sedimentation tank.

[0011] Preferably, an adjusting sleeve is fixedly connected to the inner wall of the outer rotating pipe. The inner wall of the adjusting sleeve is in movable fit with the outer wall of the middle layer knocking pipe. A reciprocating rotary chute is opened on the inner wall of the adjusting sleeve. An adjusting slider is fixedly connected to one side outer wall of the middle layer knocking pipe. The outer wall of the adjusting slider is slidably connected to the inner wall of the reciprocating rotary chute.

[0012] Preferably, a pressing plate is fixedly connected to the outer wall of the middle layer knocking pipe. A limiting spring is sleeved on the outer wall of the middle layer knocking pipe. The top outer wall of the limiting spring is fixedly connected to the bottom outer wall of the pressing plate. The bottom outer wall of the limiting spring is fixedly connected to the bottom inner wall of the outer rotating pipe.

[0013] Preferably, a limiting guide rail is fixedly connected to the inner wall of the working box. A limiting strip is fixedly connected to one side outer wall of the top of the middle layer knocking pipe. The outer wall of the limiting strip is slidably connected to the inner wall of the limiting guide rail.

[0014] Preferably, an inner layer linkage tube is sleeved on the inner wall of the middle layer percussion tube. Connecting shaft sleeves I are arranged on the outer walls of the upper and lower ends of the inner layer linkage tube. The inner shaft sleeve of the connecting shaft sleeve I is fixedly connected to the outer wall of the inner layer linkage tube, and the outer shaft sleeve of the connecting shaft sleeve I is fixedly connected to the inner wall of the middle layer percussion tube. A protective flexible tube is fixedly connected to the outer wall of the bottom of the inner layer linkage tube, and a vibrating rod is fixedly connected to the outer wall of the bottom of the protective flexible tube. The vibrating rod is located at the axial center position of the sediment discharge valve tube.

[0015] Preferably, a connecting rotating shaft is arranged on the inner wall of the vibrating rod. Connecting shaft sleeves II are arranged on the outer walls of the upper and lower ends of the connecting rotating shaft. The inner shaft sleeve of the connecting shaft sleeve II is fixedly connected to the outer wall of the connecting rotating shaft, and the outer shaft sleeve of the connecting shaft sleeve II is fixedly connected to the inner wall of the vibrating rod. A polarized stator is fixedly connected to one side outer wall of the connecting rotating shaft, and a spring type connecting flexible tube is fixedly connected to the top outer wall of the connecting rotating shaft. A second operating motor is fixedly connected to the inner wall of the middle layer percussion tube, and the axis of the second operating motor is fixedly connected to the top outer wall of the spring type connecting flexible tube.

[0016] Preferably, an outer mounting sleeve is fixedly connected to the inner wall of the outer layer rotating tube. A plurality of magnetic blocks I are fixedly installed on the inner wall of the outer mounting sleeve. An inner mounting sleeve is fixedly connected to the outer wall of the inner layer linkage tube. A plurality of magnetic blocks II are fixedly installed on the outer wall of the inner mounting sleeve. The magnetic blocks I are magnetically connected to the magnetic blocks II with the middle layer percussion tube in between at intervals.

[0017] Preferably, a deflecting magnetic strip is fixedly connected to one side outer wall of the vibrating rod. A mounting plate is fixedly installed at the connection of the sediment discharge valve tube of the sieve mesh plate. A plurality of deflecting magnetic blocks are fixedly installed on the inner wall of the mounting plate. The deflecting magnetic strip is magnetically connected to the deflecting magnetic blocks.

[0018] Preferably, a positioning plate is fixedly connected to the top outer wall of the vibrating rod. The top outer wall of the positioning plate is movably attached to the bottom outer wall of the middle layer percussion tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the present invention, through the operation of the first operating motor in the working box, the outer rotating pipe and the extension frame are driven to rotate around the sieve plate by the meshing connection of the first gear and the second gear. A plurality of polymer scraping plates on both sides of the extension frame are distributed staggeredly and obliquely, enabling the silt to converge towards the center and into the sediment discharge valve pipe, and then discharged. In the present invention, through the sliding connection of the limit guide rail and the limit strip, the middle layer knocking pipe and the adjusting slider can only slide vertically up and down. The rotation of the outer rotating pipe will drive the outer mounting sleeve to rotate synchronously. The rotation of the outer mounting sleeve will drive the adjusting slider to slide in the reciprocating rotary chute. When the adjusting slider rises from the bottom side to the top side of the reciprocating rotary chute, it drives the middle layer knocking pipe to move upward, while stretching the limit spring. Subsequently, the adjusting slider located at the top side quickly drops to the bottom side, and the stretched and deformed limit spring will drive the middle layer knocking pipe to quickly rebound. At this time, the ring plate at the bottom of the middle layer knocking pipe will impact the outer wall of the sieve plate, driving the sieve plate to make a large-amplitude vibration. By using the reverse impact of the water flow at the bottom of the secondary sedimentation tank on the mesh holes of the sieve plate, when aggregating sediment with this device, it is possible to prevent the sediment from completely blocking the mesh holes and ensure the normal flow of mud and water screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the upper left direction of the present invention.

[0022] Figure 2 It is a schematic structural diagram of the right rear direction of the present invention.

[0023] Figure 3 It is a schematic top view structural diagram of the present invention.

[0024] Figure 4 It is a schematic semi-sectional structural diagram of the primary screening tank of the present invention.

[0025] Figure 5 is Figure 4 The enlarged schematic structural diagram of part A in

[0026] Figure 6 It is a schematic internal structural diagram after the working box of the present invention is semi-sectioned.

[0027] Figure 7 It is a schematic internal structural diagram after the outer rotating pipe of the present invention is semi-sectioned.

[0028] Figure 8 It is a schematic internal structural diagram after the front half side of the adjusting sleeve of the present invention is semi-sectioned.

[0029] Figure 9 It is a schematic internal structural diagram after the rear half side of the adjusting sleeve of the present invention is semi-sectioned.

[0030] Figure 10 It is a schematic structural diagram of the outer mounting sleeve of the present invention.

[0031] Figure 11 Schematic diagram of the overall structure of the middle-layer percussion pipe of the present invention.

[0032] Figure 12 Schematic diagram of the internal structure of the middle-layer percussion pipe of the present invention after being cut in half.

[0033] Figure 13 Schematic diagram of the internal structure of the vibrating rod of the present invention after being cut in half.

[0034] In the figure: 1. Secondary sedimentation tank; 2. Primary screening tank; 3. Tertiary chemical dosing tank; 4. Primary pump pipe; 5. Secondary pump pipe; 6. Tertiary pump pipe; 7. Discharge pump pipe; 8. Screening grid; 9. Beam bridge; 10. Working box; 11. Outer rotating pipe; 12. Extension frame; 13. Polymerization scraper; 14. Gear 1; 15. First operating motor; 16. Gear 2; 17. Middle-layer percussion pipe; 18. Ring plate; 19. Limit strip; 20. Limit guide rail; 21. Adjusting sleeve; 22. Reciprocating rotary chute; 23. Adjusting slider; 24. Pressing plate; 25. Limit spring; 26. Inner-layer linkage pipe; 27. Connecting shaft sleeve 1; 28. Protective hose; 29. Vibrating rod; 30. Connecting shaft sleeve 2; 31. Polarized stator; 32. Spring-type connecting hose; 33. Second operating motor; 34. Outer mounting sleeve; 35. Magnet 1; 36. Inner mounting sleeve; 37. Magnet 2; 38. Deflecting magnetic strip; 39. Connecting rotating shaft; 40. Mounting plate; 41. Deflecting magnet; 42. Screening mesh plate; 43. Sediment discharge valve pipe; 44. Support spring; 45. Elastic rubber strip; 46. Positioning plate. Specific embodiments

[0035] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] Example 1, please refer to Figures 1 to 13, the present invention provides a technical solution: a multi-stage rural sewage treatment device, including a secondary sedimentation tank 1. A beam bridge 9 is fixedly connected to the top outer wall of the secondary sedimentation tank 1. A through hole communicating with the inner wall is formed in the top outer wall of the beam bridge 9. A 48 is arranged on the inner wall of the through hole, and the outer shaft sleeve of the 48 is fixedly connected to the inner wall of the through hole. The inner shaft sleeve of the 48 is fixedly connected to an outer layer rotating pipe 11. Extension frames 12 are fixedly connected to the bottom outer walls on both sides of the outer layer rotating pipe 11. A polymerization scraper 13 is fixedly connected to the bottom outer wall of the extension frame 12. A plurality of support springs 44 are fixedly connected to the bottom inner wall of the primary screening tank 2. The top outer walls of the plurality of support springs 44 are fixedly connected to the same screening mesh plate 42. The screening mesh plate 42 is provided with closely spaced meshes communicating up and down. The bottom outer wall of the polymerization scraper 13 is movably attached to the top outer wall of the screening mesh plate 42. A primary screening tank 2 and a tertiary medicine spraying tank 3 are respectively established on both sides of the secondary sedimentation tank 1. A screening grid 8 is fixedly installed on the inner wall of the primary screening tank 2. The primary screening tank 2 is fixedly connected to a primary pump pipe 4. A secondary pump pipe 5 is fixedly connected between the primary screening tank 2 and the secondary sedimentation tank 1. A tertiary pump pipe 6 is fixedly connected between the secondary sedimentation tank 1 and the tertiary medicine spraying tank 3. A discharge pump pipe 7 is fixedly installed on the inner wall of the tertiary medicine spraying tank 3. A working box 10 is fixedly connected to the top outer wall of the beam bridge 9. A first operating motor 15 is fixedly connected to the inner wall of the working box 10. A gear one 14 is rotatably connected to the bottom inner wall of the working box 10. The axis of the first operating motor 15 is fixedly connected to the outer wall of the gear one 14. The top end of the outer layer rotating pipe 11 passes through the bottom outer wall of the working box 10 and is located in the inner cavity of the working box 10. A gear two 16 is fixedly connected to the outer wall of the outer layer rotating pipe 11. The gear two 16 is fixedly connected to the outer wall of the gear one 14. A middle layer knocking pipe 17 is sleeved on the inner wall of the outer layer rotating pipe 11. A ring plate 18 is fixedly connected to the bottom outer wall of the middle layer knocking pipe 17. A sediment discharge valve pipe 43 is fixedly connected to the axial center position of the screening mesh plate 42. One end of the sediment discharge valve pipe 43 away from the screening mesh plate 42 communicates with an external sewage pump pool through the outer wall. An elastic rubber strip 45 is fixedly connected to the outer wall of the screening mesh plate 42. The outer wall of the elastic rubber strip 45 is fixedly connected to the inner wall of the secondary sedimentation tank 1.

[0037] In the present invention, the first step: Sewage is discharged into the first-stage screening tank 2 through the first-stage pump pipe 4. By installing a screening grid 8 on the upper layer of the first-stage screening tank 2, large-volume solid pollutants such as branches, plastics, and mud blocks can be screened out. Subsequently, the sewage in the first-stage screening tank 2 is synchronously discharged into the second-stage sedimentation tank 1 through the second-stage pump pipe 5; The second step: Fine sediment is deposited through the screening mesh plate 42 in the second-stage sedimentation tank 1. The operation of the polymer scraping plate 13 is used to gather the sediment to the central position and discharge it to the external sewage pump tank through the sediment discharge valve pipe 43. The water flow after screening out the sediment passes through the dense mesh holes of the screening mesh plate 42 to the bottom of the second-stage sedimentation tank 1 and is discharged into the third-stage chemical dosing tank 3 through the third-stage pump pipe 6; The first step: Chemicals are added to the sewage in the third-stage chemical dosing tank 3 for precipitation, and after reaching the discharge standard, it is discharged through the discharge pump pipe 7; In the present invention, through the operation of the first operating motor 15 in the working box 10, the outer rotating pipe 11 and the extension frame 12 are driven to rotate around the screening mesh plate 42 by the meshing connection of the first gear 14 and the second gear 16. Multiple polymer scraping plates 13 on both sides of the extension frame 12 are staggered and inclined, enabling the sludge to aggregate towards the center into the sediment discharge valve pipe 43 and then be discharged.

[0038] Embodiment 2, on the basis of Embodiment 1, an adjusting sleeve 21 is fixedly connected to the inner wall of the outer rotating pipe 11. The inner wall of the adjusting sleeve 21 is movably fitted with the outer wall of the middle-layer knocking pipe 17. A reciprocating rotary chute 22 is provided on the inner wall of the adjusting sleeve 21. One side outer wall of the middle-layer knocking pipe 17 is fixedly connected with an adjusting slider 23. The outer wall of the adjusting slider 23 is slidably connected with the inner wall of the reciprocating rotary chute 22. A pressing plate 24 is fixedly connected to the outer wall of the middle-layer knocking pipe 17. A limiting spring 25 is sleeved on the outer wall of the middle-layer knocking pipe 17. The top outer wall of the limiting spring 25 is fixedly connected with the bottom outer wall of the pressing plate 24. The bottom outer wall of the limiting spring 25 is fixedly connected with the bottom inner wall of the outer rotating pipe 11. A limiting guide rail 20 is fixedly connected to the inner wall of the working box 10. One side top outer wall of the middle-layer knocking pipe 17 is fixedly connected with a limiting strip 19. The outer wall of the limiting strip 19 is slidably connected with the inner wall of the limiting guide rail 20.

[0039] In the present invention, through the sliding connection between the limiting guide rail 20 and the limiting strip 19, the middle layer knocking pipe 17 and the adjusting slider 23 can only slide vertically up and down. The rotation of the outer layer rotating pipe 11 will drive the outer mounting sleeve 34 to rotate synchronously. The movement of the outer mounting sleeve 34 will drive the adjusting slider 23 to slide within the reciprocating rotary chute 22. When the adjusting slider 23 rises from the bottom side to the top side of the reciprocating rotary chute 22, it drives the middle layer knocking pipe 17 to move upward, and at the same time stretches the limiting spring 25. Subsequently, the adjusting slider 23 located at the top side quickly drops to the bottom side, and the stretched and deformed limiting spring 25 will drive the middle layer knocking pipe 17 to quickly rebound. At this time, the ring plate 18 at the bottom of the middle layer knocking pipe 17 will impact the outer wall of the sieve plate 42, driving the sieve plate 42 to make a large-amplitude vibration. By using the reverse impact of the water flow at the bottom of the secondary sedimentation tank 1 on the mesh holes of the sieve plate 42, when aggregating sediment with this device, it is possible to prevent the sediment from completely blocking the mesh holes and ensure the normal flow of mud and water screening.

[0040] Embodiment 3: On the basis of Embodiment 2, an inner layer linkage pipe 26 is sleeved on the inner wall of the middle layer knocking pipe 17. Connecting shaft sleeves 27 are arranged on the outer walls of the upper and lower ends of the inner layer linkage pipe 26. The inner shaft sleeve of the connecting shaft sleeve 27 is fixedly connected to the outer wall of the inner layer linkage pipe 26, and the outer shaft sleeve of the connecting shaft sleeve 27 is fixedly connected to the inner wall of the middle layer knocking pipe 17. A protective flexible pipe 28 is fixedly connected to the outer wall of the bottom of the inner layer linkage pipe 26. A vibrating rod 29 is fixedly connected to the outer wall of the bottom of the protective flexible pipe 28. The vibrating rod 29 is located at the axis position of the sediment discharge valve pipe 43. A connecting rotating shaft 39 is arranged on the inner wall of the vibrating rod 29. Connecting shaft sleeves 30 are arranged on the outer walls of the upper and lower ends of the connecting rotating shaft 39. The inner shaft sleeve of the connecting shaft sleeve 30 is fixedly connected to the outer wall of the connecting rotating shaft 39, and the outer shaft sleeve of the connecting shaft sleeve 30 is fixedly connected to the inner wall of the vibrating rod 29. A polarized stator 31 is fixedly connected to one side outer wall of the connecting rotating shaft 39. A spring-type connecting flexible pipe 32 is fixedly connected to the outer wall of the top of the connecting rotating shaft 39. A second operating motor 33 is fixedly connected to the inner wall of the middle layer knocking pipe 17. The axis of the second operating motor 33 is fixedly connected to the outer wall of the top of the spring-type connecting flexible pipe 32.

[0041] In the present invention, the second operating motor 33 drives the connecting rotating shaft 39 to rotate by using the spring-type connecting flexible pipe 32. The deflection of the polarized stator 31 drives the connecting rotating shaft 39 and the vibrating rod 29 to perform high-frequency vibration. Through this high-frequency vibration, the sediment aggregated in the sediment discharge valve pipe 43 is vibrated, thereby preventing the sediment from being tamped and blocking the flow of the pipeline in the sediment discharge valve pipe 43.

[0042] Embodiment 4. On the basis of Embodiment 3, an outer mounting sleeve 34 is fixedly connected to the inner wall of the outer rotating tube 11. A plurality of first magnetic blocks 35 are fixedly installed on the inner wall of the outer mounting sleeve 34. An inner mounting sleeve 36 is fixedly connected to the outer wall of the inner linkage tube 26. A plurality of second magnetic blocks 37 are fixedly installed on the outer wall of the inner mounting sleeve 36. The first magnetic blocks 35 are magnetically connected to the second magnetic blocks 37 with the middle percussion tube 17 in between. A deflection magnetic strip 38 is fixedly connected to the outer wall of one side of the vibrating rod 29. A mounting plate 40 is fixedly installed at the connection of the sediment discharge valve pipe 43 where the sieve mesh plate 42 is located. A plurality of deflection magnetic blocks 41 are fixedly installed on the inner wall of the mounting plate 40. The deflection magnetic strip 38 is magnetically connected to the deflection magnetic blocks 41. A positioning plate 46 is fixedly connected to the outer wall of the top of the vibrating rod 29. The outer wall of the top of the positioning plate 46 is in movable contact with the outer wall of the bottom of the middle percussion tube 17.

[0043] In the present invention, the first magnetic blocks 35 will rotate slowly synchronously with the outer rotating tube 11. By using the magnetic connection between the plurality of first magnetic blocks 35 and the second magnetic blocks 37, the second magnetic blocks 37 are driven to rotate slowly synchronously. The second magnetic blocks 37 further drive the vibrating rod 29 to rotate through the inner linkage tube 26. At the same time, the deflection magnetic blocks 41 will generate magnetic attraction with the deflection magnetic strip 38 on the vibrating rod 29. By using the bending of the protective hose 28 and the spring-type connection hose 32, the vibrating rod 29 is adsorbed and knocked to the position of the deflection magnetic blocks 41. The sieve mesh plate 42 is slightly vibrated by knocking, thereby avoiding the complete accumulation of silt on the sieve mesh plate 42 and blocking the surface of the sieve mesh plate 42. And by arranging a plurality of deflection magnetic blocks 41, when the extension frame 12 rotates one week, the vibrating rod 29 can knock the sieve mesh plate 42 multiple times. At the same time, the contact between the vibrating rod 29 and the sieve mesh plate 42 further transmits the vibration of the polarization stator 31 into the mounting plate 40, driving the sieve mesh plate 42 to vibrate at a small amplitude and high frequency, so as to prevent the sediment from being tamped and blocking the sieve mesh plate 42 and affecting the normal flow of mud and water screening.

[0044] Working principle and usage process of the present invention: In the present invention, the first step: Sewage is discharged into the first-stage screening tank 2 through the first-stage pump pipe 4. By installing a screening grid 8 on the upper layer of the first-stage screening tank 2, large-volume solid pollutants such as branches, plastics, and mud blocks can be screened out. Subsequently, the sewage in the first-stage screening tank 2 is synchronously discharged into the second-stage sedimentation tank 1 through the second-stage pump pipe 5; The second step: Fine sediment is deposited through the screening mesh plate 42 in the second-stage sedimentation tank 1. The sediment is gathered to the central position by the operation of the polymerization scraper 13 and discharged to the external sewage pump tank through the sediment discharge valve pipe 43. The water flow after screening out the sediment passes through the dense mesh holes of the screening mesh plate 42 to the bottom of the second-stage sedimentation tank 1 and is discharged into the third-stage chemical dosing tank 3 through the third-stage pump pipe 6; The first step: Chemicals are added to the sewage in the third-stage chemical dosing tank 3 for precipitation, and after reaching the discharge standard, it is discharged through the discharge pump pipe 7;In the present invention, through the operation of the first operating motor 15 in the working box 10, the outer rotating pipe 11 and the extension frame 12 are driven to rotate around the sieve mesh plate 42 by the meshing connection of the first gear 14 and the second gear 16. A plurality of polymer scraping plates 13 on both sides of the extension frame 12 are distributed in a staggered and inclined manner, enabling the silt to converge towards the center and enter the sediment discharge valve pipe 43, and then be discharged. In the present invention, through the sliding connection between the limit guide rail 20 and the limit strip 19, the middle layer knocking pipe 17 and the adjustment slider 23 can only slide vertically up and down. The rotation of the outer rotating pipe 11 will drive the outer mounting sleeve 34 to rotate synchronously. The rotation of the outer mounting sleeve 34 will drive the adjustment slider 23 to slide within the reciprocating rotary chute 22. When the adjustment slider 23 rises from the bottom side to the top side of the reciprocating rotary chute 22, it drives the middle layer knocking pipe 17 to move upward, while stretching the limit spring 25. Subsequently, the adjustment slider 23 located at the top side quickly drops to the bottom side, and the stretched and deformed limit spring 25 will drive the middle layer knocking pipe 17 to quickly rebound. At this time, the ring plate 18 at the bottom of the middle layer knocking pipe 17 will impact the outer wall of the sieve mesh plate 42, driving the sieve mesh plate 42 to make a large-amplitude vibration. By utilizing the reverse impact of the water flow at the bottom of the secondary sedimentation tank 1 on the mesh holes of the sieve mesh plate 42, when aggregating sediment, this device can prevent the sediment from completely blocking the mesh holes and ensure the normal flow of mud and water screening. In the present invention, the second operating motor 33 drives the connecting rotating shaft 39 to rotate through the spring-type connecting hose 32. The deflection of the polarization stator 31 will drive the connecting rotating shaft 39 and the vibrating rod 29 to perform high-frequency vibration. Through this high-frequency vibration, the sediment aggregated in the sediment discharge valve pipe 43 is vibrated, thereby preventing the sediment from being compacted and blocking the pipeline flow in the sediment discharge valve pipe 43. In the present invention, the first magnet 35 will rotate synchronously and slowly with the outer rotating pipe 11. By utilizing the magnetic connection between the plurality of first magnets 35 and the second magnets 37, the second magnets 37 are driven to rotate synchronously and slowly. The second magnets 37 further drive the vibrating rod 29 to rotate through the inner layer linkage pipe 26. At the same time, the deflecting magnet 41 will generate magnetic attraction with the deflecting magnetic strip 38 on the vibrating rod 29. By utilizing the bending of the protective hose 28 and the spring-type connecting hose 32, the vibrating rod 29 is adsorbed and knocked to the position of the deflecting magnet 41. By knocking, the sieve mesh plate 42 is slightly vibrated, thereby preventing the silt on the sieve mesh plate 42 from completely accumulating and blocking the surface of the sieve mesh plate 42. And by arranging a plurality of deflecting magnets 41, when the extension frame 12 rotates one week, the vibrating rod 29 can knock the sieve mesh plate 42 multiple times. At the same time, the contact between the vibrating rod 29 and the sieve mesh plate 42 further transmits the vibration of the polarization stator 31 to the mounting plate 40, driving the sieve mesh plate 42 to perform small-amplitude high-frequency vibration, thereby preventing the sediment from being compacted and blocking the sieve mesh plate 42 and affecting the normal flow of mud and water screening.;

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage rural sewage treatment device, comprising a secondary sedimentation tank (1), characterized in that: The top outer wall of the secondary sedimentation tank (1) is fixedly connected to a beam bridge (9), the top outer wall of the beam bridge (9) is provided with a through hole connected to the inner wall, the inner wall of the through hole is provided with (48), the outer sleeve of the (48) is fixedly connected to the inner wall of the through hole, the inner sleeve of the (48) is fixedly connected to an outer rotating tube (11), the bottom of the outer walls on both sides of the outer rotating tube (11) are fixedly connected to extension frames (12), the bottom outer wall of the extension frame (12) is fixedly connected to a polymer scraper (13), the bottom inner wall of the primary screening tank (2) is fixedly connected to a plurality of support springs (44), the top outer walls of the plurality of support springs (44) are fixedly connected to the same screening plate (42), the screening plate (42) is provided with dense mesh holes connected up and down, the bottom outer wall of the polymer scraper (13) is movably fitted to the top outer wall of the screening plate (42).

2. A rural sewage multi-stage treatment device according to claim 1, characterized in that: A primary screening pool (2) and a tertiary drug spreading pool (3) are respectively established on both sides of the secondary sedimentation pool (1); a screening grid frame (8) is fixedly installed on the inner wall of the primary screening pool (2); a primary pump pipe (4) is fixedly connected to the primary screening pool (2); a secondary pump pipe (5) is fixedly connected between the primary screening pool (2) and the secondary sedimentation pool (1); a tertiary pump pipe (6) is fixedly connected between the secondary sedimentation pool (1) and the tertiary drug spreading pool (3); and a discharge pump pipe (7) is fixedly installed on the inner wall of the tertiary drug spreading pool (3).

3. A rural sewage multi-stage treatment device according to claim 1, characterized in that: The top outer wall of the beam bridge (9) is fixedly connected to a working box (10), the inner wall of the working box (10) is fixedly connected to a first operating motor (15), the bottom inner wall of the working box (10) is rotatably connected to a gear one (14), the axis of the first operating motor (15) is fixedly connected to the outer wall of the gear one (14), the top end of the outer rotating tube (11) passes through the bottom outer wall of the working box (10) and is located in the inner cavity of the working box (10), the outer wall of the outer rotating tube (11) is fixedly connected to a gear two (16), and the gear two (16) is fixedly connected to the outer wall of the gear one (14).

4. A rural sewage multi-stage treatment device according to claim 3, characterized in that: The inner wall of the outer rotating tube (11) is sleeved with a middle percussion tube (17), the bottom outer wall of the middle percussion tube (17) is fixedly connected with a ring plate (18), the axial position of the sub-screen plate (42) is fixedly connected with a sediment discharge valve pipe (43), the outer wall of one end of the sediment discharge valve pipe (43) away from the sub-screen plate (42) is connected to an external sewage pump pool, the outer wall of the sub-screen plate (42) is fixedly connected with an elastic rubber strip (45), and the outer wall of the elastic rubber strip (45) is fixedly connected to the inner wall of the secondary sedimentation tank (1).

5. A rural sewage multi-stage treatment device according to claim 4, characterized in that: The inner wall of the outer rotating tube (11) is fixedly connected with an adjusting sleeve (21), the inner wall of the adjusting sleeve (21) is movably fitted with the outer wall of the middle knocking tube (17), the inner wall of the adjusting sleeve (21) is provided with a reciprocating rotary slide groove (22), and the outer wall of one side of the middle knocking tube (17) is fixedly connected with an adjusting slider (23), the outer wall of the adjusting slider (23) is slidably connected with the inner wall of the reciprocating rotary slide groove (22).

6. A rural sewage multi-stage treatment device according to claim 4, characterized in that: The outer wall of the middle-layer percussion tube (17) is fixedly connected to a pressure plate (24), the outer wall of the middle-layer percussion tube (17) is sleeved with a limit spring (25), the top outer wall of the limit spring (25) is fixedly connected to the bottom outer wall of the pressure plate (24), and the bottom outer wall of the limit spring (25) is fixedly connected to the bottom inner wall of the outer-layer rotating tube (11).

7. A rural sewage multi-stage treatment device according to claim 6, characterized in that: The inner wall of the working box (10) is fixedly connected to a limiting guide rail (20), the outer wall of the top side of the middle-layer knocking tube (17) is fixedly connected to a limiting strip (19), and the outer wall of the limiting strip (19) is slidably connected to the inner wall of the limiting guide rail (20).

8. A rural sewage multi-stage treatment device according to claim 7, characterized in that: The inner wall of the middle-layer percussion tube (17) is sleeved with an inner-layer linkage tube (26); the outer walls of the upper and lower ends of the inner-layer linkage tube (26) are both provided with connecting sleeves (27); the inner sleeve of the connecting sleeve (27) is fixedly connected to the outer wall of the inner-layer linkage tube (26); the outer sleeve of the connecting sleeve (27) is fixedly connected to the inner wall of the middle-layer percussion tube (17); the bottom outer wall of the inner-layer linkage tube (26) is fixedly connected with a protective hose (28); the bottom outer wall of the protective hose (28) is fixedly connected with a vibrating rod (29); the vibrating rod (29) is located at the axial center of the sediment discharge valve tube (43).

9. A rural sewage multi-stage treatment device according to claim 8, characterized in that: The inner wall of the vibrating rod (29) is provided with a connecting shaft (39), and the outer walls at both ends of the connecting shaft (39) are provided with connecting sleeves (30), the inner sleeve of the connecting sleeve (30) is fixedly connected to the outer wall of the connecting shaft (39), and the outer sleeve of the connecting sleeve (30) is fixedly connected to the inner wall of the vibrating rod (29), and the outer wall of one side of the connecting shaft (39) is fixedly connected to a polarizing stator (31), and the top outer wall of the connecting shaft (39) is fixedly connected to a spring-type connecting hose (32), and the inner wall of the middle-layer percussion tube (17) is fixedly connected to a second operating motor (33), and the axis of the second operating motor (33) is fixedly connected to the top outer wall of the spring-type connecting hose (32).

10. A rural sewage multi-stage treatment device according to claim 8, characterized in that: The inner wall of the outer rotating tube (11) is fixedly connected to an outer mounting sleeve (34), and the inner wall of the outer mounting sleeve (34) is fixedly installed with a plurality of first magnetic blocks (35). The outer wall of the inner linkage tube (26) is fixedly connected to an inner mounting sleeve (36), and the outer wall of the inner mounting sleeve (36) is fixedly installed with a plurality of second magnetic blocks (37). The first magnetic block (35) is magnetically connected to the second magnetic block (37) via the middle knocking tube (17).

11. A rural sewage multi-stage treatment device according to claim 10, characterized in that: A deflection magnetic strip (38) is fixedly connected to an outer wall of one side of the vibrating rod (29); a mounting plate (40) is fixedly mounted on the sub-screen plate (42) at a connection position with the sediment discharge valve pipe (43); a plurality of deflection magnetic blocks (41) are fixedly mounted on the inner wall of the mounting plate (40); and the deflection magnetic strip (38) is magnetically connected to the deflection magnetic blocks (41).

12. A rural sewage multi-stage treatment device according to claim 11, characterized in that: The top outer wall of the vibrating rod (29) is fixedly connected to a positioning plate (46), and the top outer wall of the positioning plate (46) is movably fitted with the bottom outer wall of the middle-layer knocking tube (17).

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