An environmental protection-oriented urban and rural sewage treatment equipment

Abstract

This invention relates to the field of wastewater treatment technology, specifically to an urban and rural wastewater treatment device for environmental protection. The device includes a treatment tank, a multi-stage treatment mechanism, a retrieval mechanism, a continuous wastewater storage mechanism, and a uniform water spraying mechanism. The output shaft of a first motor is fixedly connected to a carrying tray. A biofilm material tray is installed on the inner wall of the carrying tray. An inlet pipe connects to the inner wall of the treatment tank, and an outlet pipe connects to the outer wall of the bottom of the treatment tank. This invention uses the rotation of the first motor in conjunction with the retrieval mechanism to retrieve impurities from the three multi-stage treatment mechanisms. The continuous wastewater storage mechanism, activated by the first motor, stores impurities intercepted in the semi-circular drainage trough during the previous time period with each rotation of the first motor. Furthermore, the continuous wastewater storage mechanism, activated by the uniform water spraying mechanism, ensures that water flowing from the outlet falls in a circular pattern into the biofilm material tray, moving from the outer circle to the inner circle and back again, thus preventing uneven water distribution on the biofilm material tray and avoiding poor treatment results.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an urban and rural wastewater treatment device for environmental protection. Background Technology

[0002] Urban and rural wastewater treatment refers to the process of treating wastewater generated in cities and villages to meet discharge standards and for recycling. The purpose of wastewater treatment is to safeguard human life and health, and protect the environment and natural resources. Generally, urban wastewater treatment utilizes biological and physical treatment methods at wastewater treatment plants to remove pollutants from the water and transform it into water that can be directly discharged into rivers, lakes, and oceans. Rural wastewater treatment mainly employs methods such as constructed wetlands and biogas digesters. These treatment measures can effectively control pollutant emissions and reduce environmental impact.

[0003] Patent CN117534270B discloses an environmental protection-grade urban and rural sewage treatment device, including a support base, a treatment tank assembly, a filtration assembly, and a micro water quality monitoring station. By rotating primary, secondary, and tertiary filter cylinders, centrifugal force is used to perform graded filtration of sewage. Employing a pre-action principle, filtration cleaning components are interspersed within the primary, secondary, and tertiary filter cylinders. These components clean the cylinder walls while simultaneously collecting the contaminants concentrated around the cylinder walls by the centrifugal rotation of the filter cylinder assembly, achieving a self-cleaning effect. Furthermore, a biofilm packing disc is incorporated to further filter and remove organic matter from the sewage using biofilm filtration, effectively improving water quality.

[0004] However, the above-mentioned invention patent still has some shortcomings in actual use: 1. The capacity of the filter cleaning components is limited. Once the filter cleaning components are filled with impurities, the water filtration effect of the primary, secondary and tertiary filter cartridges will be greatly reduced. The filter cleaning components can only be replaced and cleaned by stopping the sewage treatment, which is very inconvenient and cannot continuously remove impurities; 2. The water is treated by centrifugal force and the water is scattered on the biofilm packing disc by centrifugal force, so that most of the water is located on the outer ring of the biofilm packing disc, which is unevenly distributed. Therefore, an environmental protection urban and rural sewage treatment equipment is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing an environmental protection urban and rural sewage treatment device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An environmental protection wastewater treatment device for urban and rural areas includes a treatment tank. A motor bracket is fixedly connected to the outer bottom wall of the treatment tank. A first motor is fixedly connected to the inner wall of the motor bracket. A bearing tray is fixedly connected to the output shaft of the first motor. A biofilm feed tray is provided on the inner wall of the bearing tray. A waterproof cavity is provided between the bearing tray and the treatment tank, and the waterproof cavity is fixedly connected to the treatment tank. Three evenly distributed mounting seats are fixedly connected to the inner wall of the treatment tank. An inlet pipe is connected to the inner wall of the treatment tank. An outlet pipe is connected to the outer bottom wall of the treatment tank. A ventilation door is hinged to the outer wall of the treatment tank. A second mounting seat is fixedly connected to the inner wall of the treatment tank. A second motor is fixedly connected to the inner wall of the second mounting seat. The device also includes: A multi-stage treatment mechanism is used for graded filtration of wastewater. The multi-stage treatment mechanism is installed on the biofilm feed tray. The dredging mechanism is used in conjunction with the rotation of the second motor to dredge the mud and sand in the multi-stage treatment mechanism to maintain the water filtration of the multi-stage treatment mechanism. The dredging mechanism is installed on the multi-stage treatment mechanism. The continuous sludge storage mechanism is used in conjunction with the rotation of the second motor to continuously collect the mud and sand dredged by the dredging mechanism. The continuous sludge storage mechanism is installed on the multi-stage treatment mechanism. And a uniform water spraying mechanism, used in conjunction with the continuous wastewater storage mechanism, so that the filtered wastewater can be evenly sprayed on the biofilm feed tray, which helps the microorganisms in the wastewater to fully decompose it. The uniform water spraying mechanism is installed on the multi-stage treatment mechanism.

[0007] Preferably, the multi-stage treatment mechanism includes a first water outlet, a water outlet hose, a second water outlet, two first water pipes, three water tanks, three annular chute grooves, and three semi-circular leakage grooves. The three water tanks are fixedly connected to three first mounting bases, the three semi-circular leakage grooves are disposed inside the water tanks, the three annular chute grooves are fixedly connected to the three semi-circular leakage grooves, the two first water pipes are respectively connected to two adjacent water tanks and first water pipes, the first water outlet is connected to the lowest water tank, the water outlet hose is connected to the first water outlet, and the second water outlet is connected to the water outlet hose.

[0008] Preferably, the retrieval mechanism includes a first transmission gear, a first shaft, a slag-removing plate, a retrieval frame, a second spring, and a hinge rod. The first shaft is rotatably connected to a semi-circular drainage trough. The first transmission gear is fixedly connected to the end of the first shaft. The outer wall of the slag-removing plate is fixedly connected to the hinge rod. The hinge rod is rotatably connected to the retrieval frame via a shaft. The second spring is fixedly connected between the slag-removing plate and the retrieval frame.

[0009] Preferably, the salvage mechanism is provided with three gears, and the outer wall of the three transmission gears is fitted with the same first chain. The output shaft of the second motor is fixedly connected to one of the transmission gears.

[0010] Preferably, the continuous sludge storage mechanism includes a tilting rack, a drive gear, a second shaft, a waterproof cover, a second chain, and two second gears. The second chain is sleeved on the outer wall of the two second gears. One of the second gears is fixedly connected to the sludge removal plate via a shaft, and the other second gear is rotatably connected to the retrieval frame. The waterproof cover is installed on the outside of the second chain and the two second gears and is fixedly connected to the retrieval frame. The second shaft is fixedly connected to the other second gear. The drive gear is fixedly connected to the end of the second shaft. The tilting rack is fixedly connected to the outer wall of the annular groove, and the drive gear meshes with the tilting rack.

[0011] Preferably, the continuous sludge storage mechanism further includes a sludge storage chamber, an inclined flow guide chamber, a sludge storage door, and a flow guide branch pipe. The sludge storage chamber is fixedly connected to the outer wall of the water tank. The sludge storage door is hinged to the outer wall of the sludge storage chamber. The inclined flow guide chamber is fixedly connected to the bottom of the sludge storage chamber. The flow guide branch pipe is connected to the inclined flow guide chamber. The continuous sludge storage mechanism has three evenly distributed flow guide branches, and the outer walls of the three flow guide branches are all connected to the same main flow pipe.

[0012] Preferably, the uniform water spraying mechanism includes two pressure rods, two first springs, two longitudinal rack plates, two ratchet wheels, two pawl assemblies, and two transmission gears. The two pressure rods are symmetrically distributed and slidably connected to the lowermost dirt storage chamber. The top ends of the two first springs are fixedly connected to the pressure rods through fixing blocks, and the bottom ends of the two first springs are fixedly connected to the dirt storage chamber through fixing blocks. The two longitudinal rack plates are fixedly connected to the two pressure rods respectively. The two ratchet wheels are arranged in a circumferential array. The two pawl assemblies mesh with the two ratchet wheels respectively. The two ratchet wheels are fixedly connected through a set shaft. The two transmission gears are rotatably connected to the two ratchet wheels through a set shaft respectively.

[0013] Preferably, the uniform water spraying mechanism further includes a first rack, a U-shaped slide, a slide rod, a second mounting plate, two first mounting plates, and two trapezoidal push blocks. The first rack is fixedly connected to the second water outlet. The U-shaped slide is fixedly connected to the lowest water tank. The slide rod is slidably connected to the U-shaped slide. The two first mounting plates are fixedly connected to the lowest water tank. Two third springs are fixedly connected to each first mounting plate. The ends of each pair of third springs away from the first mounting plate are fixedly connected to the trapezoidal push blocks. Two ratchet wheels are rotatably connected to the second mounting plate through a shaft. The second mounting plate is fixedly connected to the lowest inclined guide cavity.

[0014] Compared with existing technologies, the advantages of this type of urban and rural sewage treatment equipment for environmental protection are: This invention employs a multi-stage treatment mechanism to treat wastewater. A first motor, in conjunction with a retrieval mechanism, retrieves impurities from each of the three treatment stages. A continuous wastewater storage mechanism, linked to the first motor, stores impurities trapped in the semi-circular drainage trough during the previous time period with each rotation. Furthermore, the continuous wastewater storage mechanism, in conjunction with a uniform water spraying mechanism, ensures that water flowing from outlet two falls in a circular pattern into the biofilm feed tray, moving from the outer circle to the inner circle and back again. This prevents uneven water distribution on the biofilm feed tray, which can lead to poor treatment results. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the processing tank of the present invention; Figure 3 This is the present invention. Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the multi-stage processing mechanism of the present invention; Figure 5 This is a schematic diagram of the internal structure of the water tank of the present invention; Figure 6 This is a schematic diagram of the internal structure of the semi-circular water leakage channel of the present invention; Figure 7 This is the present invention. Figure 6 A magnified schematic diagram of the structure at point B in the middle; Figure 8 This is the present invention. Figure 6 A magnified schematic diagram of the structure at point C in the middle; Figure 9 This is the present invention. Figure 6 A magnified schematic diagram of the structure at point D in the middle; Figure 10 This is a schematic diagram of the internal structure of the waterproof cover of the present invention; Figure 11 This is a schematic diagram of a portion of the uniform water spraying mechanism of the present invention; Figure 12 This is a schematic diagram of the structure of the pawl assembly of the present invention; Figure 13 This is a schematic diagram of the trapezoidal pusher block of the present invention.

[0016] In the diagram: 1. Treatment tank; 2. Ventilation door panel; 3. Outlet pipe; 4. First motor; 5. Motor bracket; 6. Mounting base one; 7. Mounting base two; 8. First chain; 9. Sludge storage chamber; 10. Inclined guide chamber; 11. Sludge storage door; 12. Main flow pipe; 13. Pressure rod; 14. Waterproof chamber; 15. Bearing tray; 16. Biofilm tray; 17. Water tank; 18. Transmission gear one; 19. Second motor; 20. First shaft; 21. Water pipe one; 22. Inlet pipe; 23. Annular chute; 24. Semi-arc leaking chute; 25. Outlet one; 26. Third spring; 27. Outlet hose; 28. Outlet two 29. Transmission Gear II; 30. Guide Branch Pipe; 31. First Spring; 32. Slag Removal Plate; 33. Salvage Frame; 34. Tilting Rack; 35. Drive Gear; 36. Second Shaft; 37. Second Spring; 38. Pawl Assembly; 39. Waterproof Cover; 40. Hinge Rod; 41. Second Gear; 42. Second Chain; 43. Mounting Plate I; 44. First Rack; 45. Longitudinal Rack Plate; 46. Trapezoidal Push Block; 47. Ratchet; 48. Recurve Slide; 49. Slide Rod; 50. Mounting Plate II; 101. Multi-stage Treatment Mechanism; 202. Salvage Mechanism; 303. Continuous Sludge Storage Mechanism; 404. Uniform Spraying Mechanism. Detailed Implementation

[0017] 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.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Reference Figure 1 - Figure 13An environmental protection wastewater treatment device for urban and rural areas includes a treatment tank 1. A motor bracket 5 is fixedly connected to the outer bottom wall of the treatment tank 1. A first motor 4 is fixedly connected to the inner wall of the motor bracket 5. The output shaft of the first motor 4 is fixedly connected to a carrying tray 15. A biofilm material tray 16 is provided on the inner wall of the carrying tray 15. A waterproof cavity 14 is provided between the carrying tray 15 and the treatment tank 1, and the waterproof cavity 14 is fixedly connected to the treatment tank 1. Three evenly distributed mounting seats 6 are fixedly connected to the inner wall of the treatment tank 1. An inlet pipe 22 is connected to the inner wall of the treatment tank 1. An outlet pipe 3 is connected to the outer bottom wall of the treatment tank 1. A ventilation door 2 is hinged to the outer wall of the treatment tank 1. A second mounting seat 7 is fixedly connected to the inner wall of the treatment tank 1. A second motor 19 is fixedly connected to the inner wall of the second mounting seat 7. The device also includes: The multi-stage treatment mechanism 101 is used for graded filtration of wastewater and is installed on the biofilm material tray 16. The dredging mechanism 202 is used to cooperate with the rotation of the second motor 19 to dredge the mud and sand in the multi-stage treatment mechanism 101 to maintain the water filtration of the multi-stage treatment mechanism 101. The dredging mechanism 202 is installed on the multi-stage treatment mechanism 101. The continuous sludge storage mechanism 303 is used to cooperate with the rotation of the second motor 19 to continuously collect the mud and sand dredged by the dredging mechanism 202. The continuous sludge storage mechanism 303 is installed on the multi-stage treatment mechanism 101. And a uniform water spraying mechanism 404 is used in conjunction with the continuous wastewater storage mechanism 303 to ensure that the filtered wastewater can be evenly sprayed on the biofilm material tray 16, which helps the microorganisms in the wastewater to fully decompose. The uniform water spraying mechanism 404 is installed on the multi-stage treatment mechanism 101.

[0020] The multi-stage treatment mechanism 101 includes an outlet 25, an outlet hose 27, an outlet 28, two water pipes 21, three water tanks 17, three annular chute 23, and three semi-circular leakage channels 24. The three water tanks 17 are fixedly connected to three mounting bases 6, the three semi-circular leakage channels 24 are located inside the water tanks 17, the three annular chute 23 are fixedly connected to the three semi-circular leakage channels 24, the two water pipes 21 are connected to two adjacent water tanks 17 and water pipes 21, the outlet 25 is connected to the lowest water tank 17, the outlet hose 27 is connected to the outlet 25, and the outlet 28 is connected to the outlet hose 27.

[0021] In this implementation scheme, during use, the wastewater is connected to the inlet pipe 22. The three semi-circular drainage channels 24, arranged from top to bottom, have filter holes of decreasing size. Wastewater first enters the uppermost semi-circular drainage channel 24 through the inlet pipe 22, where large particles are intercepted. The remaining water flows into the water tank 17 and then through the water pipe 21 to the middle semi-circular drainage channel 24, where medium-sized particles are intercepted. This process continues until small particles are completely removed. The wastewater is intercepted by the bottom semi-circular drainage trough 24. The water flows into the biofilm material tray 16 through the outlet 1 25, the outlet hose 27, and the outlet 28. The rotation of the first motor 4 can drive the biofilm material tray 16 to rotate through the supporting drainage tray 15, so that the wastewater can fully contact the biofilm material tray 16. At the same time, the ventilation door 2 is opened to allow oxygen to enter the treatment tank 1. The rotation of the supporting drainage tray 15 promotes airflow. There is no need to set up an additional blower. Finally, the treated water flows out from the outlet pipe 3.

[0022] The retrieval mechanism 202 includes a transmission gear 18, a first shaft 20, a slag-removing plate 32, a retrieval frame 33, a second spring 37, and a hinge rod 40. The first shaft 20 is rotatably connected to the semi-circular drainage trough 24. The transmission gear 18 is fixedly connected to the end of the first shaft 20. The outer wall of the slag-removing plate 32 is fixedly connected to the hinge rod 40. The hinge rod 40 is rotatably connected to the retrieval frame 33 through a shaft. The second spring 37 is fixedly connected between the slag-removing plate 32 and the retrieval frame 33.

[0023] The salvage mechanism 202 has three parts. The outer walls of the three transmission gears 18 are fitted with the same first chain 8, and the output shaft of the second motor 19 is fixedly connected to one of the transmission gears 18.

[0024] The continuous sludge storage mechanism 303 includes a tilting rack 34, a drive gear 35, a second shaft 36, a waterproof cover 39, a second chain 42, and two second gears 41. The second chain 42 is sleeved on the outer wall of the two second gears 41. One of the second gears 41 is fixedly connected to the sludge removal plate 32 through a shaft, and the other second gear 41 is rotatably connected to the retrieval frame 33. The waterproof cover 39 is covered on the outside of the second chain 42 and the two second gears 41 and is fixedly connected to the retrieval frame 33. The second shaft 36 is fixedly connected to the other second gear 41. The drive gear 35 is fixedly connected to the end of the second shaft 36. The tilting rack 34 is fixedly connected to the outer wall of the annular groove 23, and the drive gear 35 meshes with the tilting rack 34.

[0025] The continuous sludge storage mechanism 303 also includes a sludge storage chamber 9, an inclined flow guide chamber 10, a sludge storage door 11, and a flow guide branch pipe 30. The sludge storage chamber 9 is fixedly connected to the outer wall of the water tank 17. The sludge storage door 11 is hinged to the outer wall of the sludge storage chamber 9. The inclined flow guide chamber 10 is fixedly connected to the bottom of the sludge storage chamber 9. The flow guide branch pipe 30 is connected to the inclined flow guide chamber 10. The continuous sludge storage mechanism 303 is provided with three evenly distributed flow guide branches 30. The outer walls of the three flow guide branches 30 are all connected to the same main flow pipe 12.

[0026] In this embodiment, the second motor 19 rotates continuously, causing it to drive three sets of retrieval mechanisms 202 via the transmission gear 18 and the first chain 8 to retrieve impurities from the three semi-circular drainage channels 24, maintaining the permeability of the semi-circular drainage channels 24. The first shaft 20, as... Figure 6 The counterclockwise rotation of the slag-removing plate 32 causes it to scoop up existing impurities from the semi-circular drainage trough 24. Simultaneously, when the drive gear 35 meshes with the tilting rack 34, that is, when the slag-removing plate 32 moves to be flush with the top of the semi-circular drainage trough 24, the tilting rack 34 rotates 180 degrees. This causes the tilting rack 34 to drive the second shaft 36 and the two second gears 41 to rotate. At this time, the slag-removing plate 32 rotates along the hinge between the hinge rod 40 and the scooping frame 33. The side of the scooping frame 33 that was originally facing upwards now covers the top of the sludge storage chamber 9, pouring the impurities in the semi-circular drainage trough 24 into the sludge storage chamber 9. This prevents the semi-circular drainage trough 24 from being blocked by impurities and promotes continuous sewage treatment, avoiding the need to stop the operation of the device when cleaning impurities.

[0027] The uniform water spraying mechanism 404 includes two pressure rods 13, two first springs 31, two longitudinal rack plates 45, two ratchet wheels 47, two pawl assemblies 38, and two transmission gears 29. The two pressure rods 13 are symmetrically distributed and slidably connected to the bottommost dirt storage chamber 9. The top ends of the two first springs 31 are fixedly connected to the pressure rods 13 through fixing blocks, and the bottom ends of the two first springs 31 are fixedly connected to the dirt storage chamber 9 through fixing blocks. The two longitudinal rack plates 45 are fixedly connected to the two pressure rods 13 respectively. The two ratchet wheels 47 are arranged in a circumferential array. The two pawl assemblies 38 mesh with the two ratchet wheels 47 respectively. The two ratchet wheels 47 are fixedly connected through a set shaft. The two transmission gears 29 are rotatably connected to the two ratchet wheels 47 through a set shaft respectively.

[0028] The uniform water spraying mechanism 404 also includes a first rack 44, a U-shaped slide 48, a slide rod 49, a second mounting plate 50, two first mounting plates 43, and two trapezoidal push blocks 46. The first rack 44 is fixedly connected to the second water outlet 28. The U-shaped slide 48 is fixedly connected to the lowest water tank 17. The slide rod 49 is slidably connected to the U-shaped slide 48. The two first mounting plates 43 are fixedly connected to the lowest water tank 17. Two third springs 26 are fixedly connected to each first mounting plate 43. The ends of each pair of third springs 26 away from the first mounting plate 43 are fixedly connected to the trapezoidal push blocks 46. Two ratchet wheels 47 are rotatably connected to the second mounting plate 50 through a set shaft. The second mounting plate 50 is fixedly connected to the lowest inclined guide cavity 10.

[0029] In this embodiment, during the flipping of the slag-removing plate 32, the pressure rod 13 is pressed down, causing the pressure rod 13 to drive the transmission gear 29 to rotate via the longitudinal rack plate 45. The transmission gear 29 then drives the ratchet 47 to rotate via the pawl assembly 38. Due to the action of the two trapezoidal push blocks 46, the slide rod 49 slides along the shape of the U-shaped slide block 48. Figure 12 As shown, at this time, the first rack 44 is engaged with the ratchet 47 on the left, so when the longitudinal rack plate 45 moves down, it drives the outlet 28 to move backward a certain distance. Since the mounting base 6 is continuously rotating, the water flowing out of the outlet 28 will fall into the biofilm feed tray 16 in a circular manner, from the outer circle to the inner circle. When the slide rod 49 moves along the path as shown... Figure 13 As shown, when the slide above the U-shaped slide block 48 gradually contacts the inclined surface of the trapezoidal push block 46, the ratchet 47 once again drives the first rack 44 to move, causing the slide rod 49 to first squeeze and compress the third spring 26, and then move into the slide below the U-shaped slide block 48 under the elastic force of the third spring 26. At this time, the first rack 44 meshes with another ratchet 47, causing the pressure rod 13 on the other side to drive the outlet 28 to gradually move from the inner ring to the outer ring, avoiding uneven water distribution on the biofilm material tray 16, which would cause poor treatment effect.

[0030] The working principle and usage of this invention are explained in detail below: In use, the wastewater is connected to the inlet pipe 22. The three semi-circular drainage channels 24, arranged from top to bottom, have filter holes that decrease in size. The wastewater first enters the uppermost semi-circular drainage channel 24 through the inlet pipe 22, where large particles are intercepted. The remaining water flows into the water tank 17 and then through the water pipe 21 to the middle semi-circular drainage channel 24, where medium-sized particles are intercepted. This process continues... The small particles are ultimately intercepted by the bottom semi-circular drainage channel 24. The water flows into the biofilm material tray 16 through the outlet 1 25, the outlet hose 27, and the outlet 28. The rotation of the first motor 4 can drive the biofilm material tray 16 to rotate through the supporting drainage tray 15, so that the sewage can fully contact the biofilm material tray 16. At the same time, the ventilation door 2 is opened to allow oxygen to enter the treatment tank 1. The rotation of the supporting drainage tray 15 promotes airflow. There is no need to set up an additional blower. Finally, the treated water flows out from the outlet pipe 3.

[0031] The second motor 19 rotates continuously, causing it to drive the three sets of retrieval mechanisms 202 via the transmission gear 18 and the first chain 8 to retrieve impurities from the three semi-circular drainage channels 24, maintaining the permeability of the semi-circular drainage channels 24. The first shaft 20, as... Figure 6 The counterclockwise rotation of the slag-removing plate 32 causes it to scoop up existing impurities from the semi-circular drainage trough 24. Simultaneously, when the drive gear 35 meshes with the tilting rack 34, that is, when the slag-removing plate 32 moves to be flush with the top of the semi-circular drainage trough 24, the tilting rack 34 rotates 180 degrees. This causes the tilting rack 34 to drive the second shaft 36 and the two second gears 41 to rotate. At this time, the slag-removing plate 32 rotates along the hinge between the hinge rod 40 and the scooping frame 33. The side of the scooping frame 33 that was originally facing upwards now covers the top of the sludge storage chamber 9, pouring the impurities in the semi-circular drainage trough 24 into the sludge storage chamber 9. This prevents the semi-circular drainage trough 24 from being blocked by impurities and promotes continuous sewage treatment, avoiding the need to stop the operation of the device when cleaning impurities.

[0032] Simultaneously, during the flipping process of the slag-removing plate 32, the pressure rod 13 is pressed down, causing the pressure rod 13 to drive the transmission gear 29 to rotate via the longitudinal rack plate 45. The transmission gear 29 then drives the ratchet 47 to rotate via the pawl assembly 38. Due to the action of the two trapezoidal push blocks 46, the slide rod 49 slides along the shape of the U-shaped slide block 48. Figure 12 As shown, at this time, the first rack 44 is engaged with the ratchet 47 on the left, so when the longitudinal rack plate 45 moves down, it drives the outlet 28 to move backward a certain distance. Since the mounting base 6 is continuously rotating, the water flowing out of the outlet 28 will fall into the biofilm feed tray 16 in a circular manner, from the outer circle to the inner circle. When the slide rod 49 moves along the path as shown... Figure 13As shown, when the slide above the U-shaped slide block 48 gradually contacts the inclined surface of the trapezoidal push block 46, the ratchet 47 once again drives the first rack 44 to move, causing the slide rod 49 to first squeeze and compress the third spring 26, and then move into the slide below the U-shaped slide block 48 under the elastic force of the third spring 26. At this time, the first rack 44 meshes with another ratchet 47, causing the pressure rod 13 on the other side to drive the outlet 28 to gradually move from the inner ring to the outer ring, avoiding uneven water distribution on the biofilm material tray 16, which would cause poor treatment effect.

[0033] Since the sludge storage chamber 9 has its own water-filtering properties, when there is still residual water in the salvaged impurities, it can flow through the sludge storage chamber 9 into the inclined guide chamber 10, and then into the guide branch pipe 30 and the main guide pipe 12, and finally into the bearing drain plate 15.

[0034] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0035] 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. An environmental protection urban and rural sewage treatment equipment, comprising a treatment tank (1), a motor bracket (5) fixedly connected to the bottom outer wall of the treatment tank (1), a first motor (4) fixedly connected to the inner wall of the motor bracket (5), a bearing drain plate (15) fixedly connected to the output shaft of the first motor (4), a biofilm feed plate (16) provided on the inner wall of the bearing drain plate (15), a waterproof cavity (14) provided between the bearing drain plate (15) and the treatment tank (1), the waterproof cavity (14) fixedly connected to the treatment tank (1), three evenly distributed mounting seats (6) fixedly connected to the inner wall of the treatment tank (1), an inlet pipe (22) connected to the inner wall of the treatment tank (1), an outlet pipe (3) connected to the bottom outer wall of the treatment tank (1), a ventilation door (2) hinged to the outer wall of the treatment tank (1), a mounting seat (7) fixedly connected to the inner wall of the treatment tank (1), and a second motor (19) fixedly connected to the inner wall of the mounting seat (7), characterized in that, Also includes: A multi-stage treatment unit (101) is used to perform graded filtration of wastewater. The multi-stage treatment unit (101) is installed on the biofilm feed tray (16). The dredging mechanism (202) is used to cooperate with the rotation of the second motor (19) to dredge the mud and sand in the multi-stage treatment mechanism (101) to maintain the water filtration of the multi-stage treatment mechanism (101). The dredging mechanism (202) is installed on the multi-stage treatment mechanism (101). The continuous sludge storage mechanism (303) is used to cooperate with the rotation of the second motor (19) to continuously collect the mud and sand dredged by the dredging mechanism (202). The continuous sludge storage mechanism (303) is installed on the multi-stage treatment mechanism (101). And a uniform water spraying mechanism (404) is used in conjunction with a continuous wastewater storage mechanism (303) so that the filtered wastewater can be evenly sprayed on the biofilm feed tray (16), which helps the microorganisms in the wastewater to fully decompose. The uniform water spraying mechanism (404) is installed on the multi-stage treatment mechanism (101). The multi-stage treatment mechanism (101) includes a water outlet 1 (25), a water outlet hose (27), a water outlet 2 (28), two water pipes 1 (21), three water tanks (17), three annular chute (23) and three semi-arc leaking troughs (24). The three water tanks (17) are fixedly connected to three mounting bases 1 (6) respectively. The three semi-arc leaking troughs (24) are set inside the water tanks (17). The three annular chute (23) are fixedly connected to the three semi-arc leaking troughs (24) respectively. The two water pipes 1 (21) are connected to two adjacent water tanks (17) and water pipes 1 (21) respectively. The water outlet 1 (25) is connected to the lowest water tank (17). The water outlet hose (27) is connected to the water outlet 1 (25). The water outlet 2 (28) is connected to the water outlet hose (27). The retrieval mechanism (202) includes a transmission gear (18), a first shaft (20), a slag-collecting plate (32), a retrieval frame (33), a second spring (37), and a hinge rod (40). The first shaft (20) is rotatably connected to the semi-arc-shaped drainage trough (24). The transmission gear (18) is fixedly connected to the end of the first shaft (20). The outer wall of the slag-collecting plate (32) is fixedly connected to the hinge rod (40). The hinge rod (40) is rotatably connected to the retrieval frame (33) through the provided shaft. The second spring (37) is fixedly connected between the slag-collecting plate (32) and the retrieval frame (33). The salvage mechanism (202) is provided with three gears, and the outer wall of the three transmission gears (18) is fitted with the same first chain (8). The output shaft of the second motor (19) is fixedly connected to one of the transmission gears (18). The continuous sludge storage mechanism (303) includes a rotating rack (34), a drive gear (35), a second shaft (36), a waterproof cover (39), a second chain (42), and two second gears (41). The second chain (42) is sleeved on the outer wall of the two second gears (41). One of the second gears (41) is fixedly connected to the sludge removal plate (32) through a shaft, and the other second gear (41) is rotatably connected to the retrieval frame (33). The waterproof cover (39) is covered on the outside of the second chain (42) and the two second gears (41). The waterproof cover (39) is fixedly connected to the retrieval frame (33). The second shaft (36) is fixedly connected to the other second gear (41). The drive gear (35) is fixedly connected to the end of the second shaft (36). The rotating rack (34) is fixedly connected to the outer wall of the annular groove (23), and the drive gear (35) meshes with the rotating rack (34).

2. The urban and rural sewage treatment equipment for environmental protection according to claim 1, characterized in that: The continuous sludge storage mechanism (303) also includes a sludge storage chamber (9), an inclined flow guide chamber (10), a sludge storage door (11), and a flow guide branch pipe (30). The sludge storage chamber (9) is fixedly connected to the outer wall of the water tank (17). The sludge storage door (11) is hinged to the outer wall of the sludge storage chamber (9). The inclined flow guide chamber (10) is fixedly connected to the bottom of the sludge storage chamber (9). The flow guide branch pipe (30) is connected to the inclined flow guide chamber (10). The continuous sludge storage mechanism (303) is provided with three evenly distributed flow guide branches (30). The outer walls of the three flow guide branches (30) are all connected to the same main flow pipe (12).

3. The urban and rural sewage treatment equipment for environmental protection according to claim 2, characterized in that: The uniform water spraying mechanism (404) includes two pressure rods (13), two first springs (31), two longitudinal rack plates (45), two ratchet wheels (47), two pawl assemblies (38), and two transmission gears (29). The two pressure rods (13) are symmetrically distributed and slidably connected to the bottommost dirt storage chamber (9). The top ends of the two first springs (31) are fixedly connected to the pressure rods (13) through fixing blocks, and the bottom ends of the two first springs (31) are fixedly connected to the dirt storage chamber (9) through fixing blocks. The two longitudinal rack plates (45) are fixedly connected to the two pressure rods (13) respectively. The two ratchet wheels (47) are arranged in a circumferential array. The two pawl assemblies (38) mesh with the two ratchet wheels (47) respectively. The two ratchet wheels (47) are fixedly connected through a set shaft. The two transmission gears (29) are rotatably connected to the two ratchet wheels (47) through a set shaft respectively.

4. The urban and rural sewage treatment equipment for environmental protection according to claim 3, characterized in that: The uniform water spraying mechanism (404) further includes a first rack (44), a U-shaped slide (48), a slide rod (49), a second mounting plate (50), two first mounting plates (43), and two trapezoidal push blocks (46). The first rack (44) is fixedly connected to the second outlet (28). The U-shaped slide (48) is fixedly connected to the lowest water tank (17). The slide rod (49) is slidably connected to the U-shaped slide (48). The two first mounting plates (43) are fixedly connected to the lowest water tank (17). Two third springs (26) are fixedly connected to each first mounting plate (43). The ends of each pair of third springs (26) away from the first mounting plate (43) are fixedly connected to the trapezoidal push blocks (46). Two ratchet wheels (47) are rotatably connected to the second mounting plate (50) through a set shaft. The second mounting plate (50) is fixedly connected to the lowest inclined guide cavity (10).

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