Urban and rural sewage treatment equipment for environmental protection

Abstract

The invention relates to the technical field of sewage treatment, in particular to urban and rural sewage treatment equipment for environmental protection, which comprises a treatment tank, a multi-stage treatment mechanism, a fishing mechanism, a continuous sewage storage mechanism and a uniform watering mechanism, an output shaft of a first motor is fixedly connected with a bearing leakage disc, and a biological membrane tray is arranged on the inner wall of the bearing leakage disc; the inner wall of the treatment tank communicates with a water inlet pipe, and the bottom outer wall of the treatment tank communicates with a water outlet pipe. A first motor is matched with a fishing mechanism in a rotating mode to fish impurities in the three multi-stage treatment mechanisms, and a continuous dirt storage mechanism is linked so that the first motor can store the impurities intercepted in a semi-arc-shaped water leakage groove in the last time period every time the first motor rotates by one circle; and the continuous sewage storage mechanism is linked with the uniform water sprinkling mechanism, so that water flowing out of a water outlet II falls into the biological membrane tray in a winding manner, winds from an outer ring to an inner ring and then winds from the inner ring to the outer ring, and the problem of poor treatment effect caused by non-uniform distribution of water on the biological membrane tray is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to an urban and rural sewage treatment device for environmental protection. Background Art

[0002] Urban and rural sewage treatment refers to the process of treating the sewage generated in cities and villages to meet the discharge standards and be recycled. The purpose of sewage treatment is to ensure the safety of human life and health, and to protect the environment and natural resources. Generally, urban sewage treatment uses biological and physical treatment methods in sewage treatment plants to remove pollutants in water and turn it into water that can be directly discharged into rivers, lakes, and the ocean. Rural sewage treatment mainly uses treatment methods such as constructed wetlands and biogas digesters. These treatment measures can effectively control pollutant emissions and reduce the impact on the environment.

[0003] The patent with the authorization announcement number CN117534270B discloses an urban and rural sewage treatment device for environmental protection, including a support base, a treatment tank assembly, a filtration treatment assembly, and a micro water quality monitoring station. Through the rotationally arranged primary filtration cylinder, secondary filtration cylinder, and tertiary filtration cylinder, the sewage is subjected to hierarchical filtration treatment by centrifugal force, and the pre-action principle is adopted. A filtration cleaning component is inserted into the primary filtration cylinder, secondary filtration cylinder, and tertiary filtration cylinder. While cleaning the cylinder walls of the primary filtration cylinder, secondary filtration cylinder, and tertiary filtration cylinder, the primary cleaning tank, secondary cleaning tank, and tertiary cleaning tank can collect the contaminants concentrated around the cylinder walls through the centrifugal rotation of the filtration drum assembly, achieving the technical effect of self-cleaning of the filtration drum assembly. By setting a biofilm packing disc, the biofilm filtration method is used to further filter and remove the organic matter in the sewage, effectively improving the water quality.

[0004] However, there are still some deficiencies in the actual use of the above-mentioned invention patent: 1. The capacity of the set filtration cleaning component is limited. Once the filtration cleaning component is filled with impurities, the water filtration effect of the set primary filtration cylinder, secondary filtration cylinder, and tertiary filtration cylinder will be greatly reduced. Only by stopping sewage treatment can the filtration cleaning component be replaced and cleaned, which is very inconvenient and cannot continuously remove impurities; 2. The centrifugal force is used to treat the water body, and the water body is scattered on the biofilm packing disc by centrifugal force, so that most of the water body is located on the outer circle of the biofilm packing disc, with uneven distribution. Therefore, an urban and rural sewage treatment device for environmental protection is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background art, and to propose an urban and rural sewage treatment device for environmental protection.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: An urban and rural sewage treatment device for environmental protection, comprising a treatment tank. A motor bracket is fixedly connected to the outer wall of the bottom of the treatment tank. A first motor is fixedly connected to the inner wall of the motor bracket. The output shaft of the first motor is fixedly connected to a bearing leakage tray. A biological membrane tray is arranged on the inner wall of the bearing leakage tray. A waterproof cavity is arranged between the bearing leakage tray and the treatment tank, and the waterproof cavity is fixedly connected to the treatment tank. Three uniformly distributed mounting seats I are fixedly connected to the inner wall of the treatment tank. A water inlet pipe is communicated with the inner wall of the treatment tank. An outlet pipe is communicated with the outer wall of the bottom of the treatment tank. A ventilation door panel is hinged to the outer wall of the treatment tank. A mounting seat II is fixedly connected to the inner wall of the treatment tank. A second motor is fixedly connected to the inner wall of the mounting seat II. It further includes: A multi-stage treatment mechanism for grading and filtering sewage, and the multi-stage treatment mechanism is installed on the biological membrane tray; A salvage mechanism for cooperating with the rotation of the second motor to salvage the sediment in the multi-stage treatment mechanism to maintain the water filtration performance of the multi-stage treatment mechanism, and the salvage mechanism is installed on the multi-stage treatment mechanism; A continuous sewage storage mechanism for cooperating with the rotation of the second motor to continuously collect the sediment salvaged by the salvage mechanism, and the continuous sewage storage mechanism is installed on the multi-stage treatment mechanism; And a uniform sprinkling mechanism for cooperating with the continuous sewage storage mechanism to evenly sprinkle the filtered sewage on the biological membrane tray, which helps the microorganisms in the sewage to decompose fully, and the uniform sprinkling 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 water pipes I, three water storage tanks, three annular chutes and three semi-circular water leakage grooves. The three water storage tanks are respectively fixedly connected to the three mounting seats I. The three semi-circular water leakage grooves are arranged inside the water storage tanks. The three annular chutes are respectively fixedly connected to the three semi-circular water leakage grooves. The two water pipes I are respectively communicated with two adjacent water storage tanks and the water pipes I. The first water outlet is communicated with the lowermost water storage tank. The water outlet hose is connected to the first water outlet. The second water outlet is connected to the water outlet hose.

[0008] Preferably, the salvage mechanism includes a first transmission gear, a first shaft rod, a slag salvage plate, a salvage frame, a second spring and a hinged rod. The first shaft rod is rotatably connected to the semi-circular water leakage groove. The first transmission gear is fixedly connected to the end of the first shaft rod. The outer wall of the slag salvage plate is fixedly connected to the hinged rod. The hinged rod is rotatably connected to the salvage frame through a set shaft rod. The second spring is fixedly connected between the slag salvage plate and the salvage frame.

[0009] Preferably, there are three salvage mechanisms. The same first chain is sleeved on the outer walls of the three first transmission gears. The output shaft of the second motor is fixedly connected to one of the first transmission gears.

[0010] Preferably, the continuous dirt storage mechanism includes a flipping rack, a driving gear, a second shaft rod, a waterproof cover, a second chain and two second gears. The second chain is sleeved on the outer walls of the two second gears. One of the second gears is fixedly connected to the slag scraping plate through a provided shaft rod, and the other second gear is rotatably connected to the salvage rack. The waterproof cover covers the outside of the second chain and the two second gears, and the waterproof cover is fixedly connected to the salvage rack. The second shaft rod is fixedly connected to the other second gear, the driving gear is fixedly connected to the end of the second shaft rod, the flipping rack is fixedly connected to the outer wall of the annular chute, and the driving gear meshes with the flipping rack.

[0011] Preferably, the continuous dirt storage mechanism further includes a dirt storage cavity, an inclined surface diversion cavity, a dirt storage door and a diversion branch pipe. The dirt storage cavity is fixedly connected to the outer wall of the water storage tank, the dirt storage door is hinged to the outer wall of the dirt storage cavity, the inclined surface diversion cavity is fixedly connected to the bottom of the dirt storage cavity, the diversion branch pipe is communicated with the inclined surface diversion cavity, and three continuous dirt storage mechanisms are provided and evenly distributed. The outer walls of the three diversion branch pipes are all communicated with the same main diversion pipe.

[0012] Preferably, the uniform sprinkling mechanism includes two pressing rods, two first springs, two longitudinal rack plates, two ratchets, two ratchet pawl assemblies and two transmission gears II. The two pressing rods are symmetrically distributed and slidably connected to the lowermost dirt storage cavity. The top ends of the two first springs are fixedly connected to the pressing rods through fixing blocks, and the bottom ends of the two first springs are fixedly connected to the dirt storage cavity through fixing blocks. The two longitudinal rack plates are respectively fixedly connected to the two pressing rods. The two ratchets are distributed in a circumferential array. The two ratchet pawl assemblies are respectively engaged with the two ratchets. The two ratchets are fixedly connected through a provided shaft rod. The two transmission gears II are respectively rotatably connected to the two ratchets through a provided shaft rod.

[0013] Preferably, the uniform sprinkling mechanism further includes a first rack, a return-shaped sliding seat, a sliding 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 return-shaped sliding seat is fixedly connected to the lowermost water storage tank. The sliding rod is slidably connected to the return-shaped sliding seat. The two first mounting plates are fixedly connected to the lowermost water storage tank. Two third springs are fixedly connected to each first mounting plate. The ends of each two third springs away from the first mounting plate are fixedly connected to the trapezoidal push block. The two ratchets are rotatably connected to the second mounting plate through a provided shaft rod. The second mounting plate is fixedly connected to the lowermost inclined surface diversion cavity.

[0014] Compared with the existing technology, the advantages of this urban and rural sewage treatment equipment for environmental protection are as follows: The present invention performs multi-stage treatment on sewage by setting up a multi-stage treatment mechanism. The first motor rotates to cooperate with the salvage mechanism to salvage impurities in three multi-stage treatment mechanisms respectively. The continuous sewage storage mechanism is linked so that every time the first motor rotates one circle, the impurities intercepted inside the semi-circular water leakage tank in the previous time period are stored. Moreover, the continuous sewage storage mechanism is linked with the uniform sprinkling mechanism so that the water flowing out from the second water outlet will fall on the biofilm material tray in a circular form, winding from the outer circle to the inner circle and then back from the inner circle to the outer circle, avoiding the problem of uneven water distribution on the biofilm material tray and poor treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic structural diagram of the interior of the treatment tank of the present invention; Figure 3 is the present invention Figure 2 partial enlarged structural diagram at A in; Figure 4 is a schematic structural diagram of the multi-stage treatment mechanism of the present invention; Figure 5 is a schematic structural diagram of the interior of the water storage tank of the present invention; Figure 6 is a schematic structural diagram of the interior of the semi-circular water leakage tank of the present invention; Figure 7 is the present invention Figure 6 partial enlarged structural diagram at B in; Figure 8 is the present invention Figure 6 partial enlarged structural diagram at C in; Figure 9 is the present invention Figure 6 partial enlarged structural diagram at D in; Figure 10 is a schematic structural diagram of the interior of the waterproof cover of the present invention; Figure 11 is a partial schematic structural diagram of the uniform sprinkling mechanism of the present invention; Figure 12 is a schematic structural diagram of the ratchet pawl assembly of the present invention; Figure 13 is a schematic structural diagram of the trapezoidal push block of the present invention.

[0016] In the figure: 1, treatment tank; 2, ventilation door panel; 3, water outlet pipe; 4, first motor; 5, motor support; 6, mounting base one; 7, mounting base two; 8, first chain; 9, sewage storage chamber; 10, inclined surface diversion chamber; 11, sewage storage door; 12, main diversion pipe; 13, pressure rod; 14, waterproof chamber; 15, bearing leakage tray; 16, biofilm material tray; 17, water storage tank; 18, driving gear one; 19, second motor; 20, first shaft rod; 21, water pipe one; 22, water inlet pipe; 23, annular sliding groove; 24, semi-circular water leakage groove; 25, water outlet one; 26, third spring; 27, water outlet hose; 28, water outlet two; 29, driving gear two; 30, diversion branch pipe; 31, first spring; 32, slag fishing plate; 33, fishing frame; 34, flipping rack; 35, driving gear; 36, second shaft rod; 37, second spring; 38, ratchet pawl assembly; 39, waterproof cover; 40, hinge rod; 41, second gear; 42, second chain; 43, mounting plate one; 44, first rack; 45, longitudinal rack plate; 46, trapezoidal push block; 47, ratchet wheel; 48, return-shaped sliding seat; 49, sliding rod; 50, mounting plate two; 101, multi-stage treatment mechanism; 202, fishing mechanism; 303, continuous sewage storage mechanism; 404, uniform water spraying mechanism. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] Refer to Figure 1 - Figure 13, An urban and rural sewage treatment device for environmental protection, including a treatment tank 1. A motor bracket 5 is fixedly connected to the outer wall of the bottom of the treatment tank 1. A first motor 4 is fixedly connected to the inner wall of the motor bracket 5. An output shaft of the first motor 4 is fixedly connected to a bearing leakage tray 15. A biological membrane tray 16 is arranged on the inner wall of the bearing leakage tray 15. A waterproof cavity 14 is arranged between the bearing leakage tray 15 and the treatment tank 1, and the waterproof cavity 14 is fixedly connected to the treatment tank 1. Three uniformly distributed mounting seats one 6 are fixedly connected to the inner wall of the treatment tank 1. A water inlet pipe 22 is communicated with the inner wall of the treatment tank 1. An outlet pipe 3 is communicated with the outer wall of the bottom of the treatment tank 1. A ventilation door panel 2 is hinged to the outer wall of the treatment tank 1. A mounting seat two 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 mounting seat two 7. It further includes: A multi-stage treatment mechanism 101 for grading and filtering sewage. The multi-stage treatment mechanism 101 is installed on the biological membrane tray 16; A salvage mechanism 202 for cooperating with the rotation of the second motor 19 to salvage the sediment in the multi-stage treatment mechanism 101 to maintain the water filtration performance of the multi-stage treatment mechanism 101. The salvage mechanism 202 is installed on the multi-stage treatment mechanism 101; A continuous sewage storage mechanism 303 for cooperating with the rotation of the second motor 19 to continuously collect the sediment salvaged by the salvage mechanism 202. The continuous sewage storage mechanism 303 is installed on the multi-stage treatment mechanism 101; And a uniform sprinkling mechanism 404 for cooperating with the continuous sewage storage mechanism 303 to evenly sprinkle the filtered sewage on the biological membrane tray 16, which helps the microorganisms in the sewage to decompose fully. The uniform sprinkling mechanism 404 is installed on the multi-stage treatment mechanism 101.

[0020] Among them, the multi-stage treatment mechanism 101 includes a first water outlet 25, a water outlet hose 27, a second water outlet 28, two water pipes one 21, three water storage tanks 17, three annular chutes 23 and three semi-circular water leakage grooves 24. The three water storage tanks 17 are respectively fixedly connected to the three mounting seats one 6. The three semi-circular water leakage grooves 24 are arranged inside the water storage tanks 17. The three annular chutes 23 are respectively fixedly connected to the three semi-circular water leakage grooves 24. The two water pipes one 21 are respectively communicated with two adjacent water storage tanks 17 and the water pipes one 21. The first water outlet 25 is communicated with the lowermost water storage tank 17. The water outlet hose 27 is connected to the first water outlet 25. The second water outlet 28 is connected to the water outlet hose 27.

[0021] In this implementation scheme, when in use, the sewage is connected to the water inlet pipe 22. The three semi-circular water leakage grooves 24 are arranged from top to bottom, and the filtering holes are arranged from large to small. First, the sewage enters the uppermost semi-circular water leakage groove 24 from the water inlet pipe 22. The impurities with large particle sizes are intercepted by the semi-circular water leakage groove 24, and the remaining water flows into the water receiving tank 17 and then flows into the middle semi-circular water leakage groove 24 through the water pipe 1. The impurities with medium particle sizes are intercepted by the middle semi-circular water leakage groove 24, and so on. Finally, the impurities with small particle sizes are intercepted by the lowermost semi-circular water leakage groove 24. The water flows into the biological film tray 16 through the water outlet 1, the water outlet hose 27 and the water outlet 2. The rotation of the first motor 4 can drive the biological film tray 16 to rotate through the bearing leakage tray 15, so that the sewage can be fully contacted with the biological film tray 16. At the same time, the ventilation door panel 2 is opened so that oxygen can enter the treatment tank 1. The rotation of the bearing leakage tray 15 promotes the circulation of air flow, and there is no need to set an additional blower. Finally, the treated water flows out from the water outlet pipe 3.

[0022] Among them, the salvage mechanism 202 includes a transmission gear 18, a first shaft 20, a slag scraping plate 32, a salvage frame 33, a second spring 37 and a hinged rod 40. The first shaft 20 is rotatably connected to the semi-circular water leakage groove 24. The transmission gear 18 is fixedly connected to the end of the first shaft 20. The outer wall of the slag scraping plate 32 is fixedly connected to the hinged rod 40. The hinged rod 40 is rotatably connected to the salvage frame 33 through a set shaft. The second spring 37 is fixedly connected between the slag scraping plate 32 and the salvage frame 33.

[0023] Among them, three salvage mechanisms 202 are provided. The outer walls of the three transmission gears 18 are sleeved with the same first chain 8. The output shaft of the second motor 19 is fixedly connected to one of the transmission gears 18.

[0024] Among them, the continuous sewage storage mechanism 303 includes a flipping rack 34, a driving 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 walls of the two second gears 41. One of the second gears 41 is fixedly connected to the slag scraping plate 32 through a set shaft, and the other second gear 41 is rotatably connected to the salvage frame 33. The waterproof cover 39 covers the outside of the second chain 42 and the two second gears 41. The waterproof cover 39 is fixedly connected to the salvage frame 33. The second shaft 36 is fixedly connected to the other second gear 41. The driving gear 35 is fixedly connected to the end of the second shaft 36. The flipping rack 34 is fixedly connected to the outer wall of the annular sliding groove 23. The driving gear 35 meshes with the flipping rack 34.

[0025] Among them, the continuous dirt storage mechanism 303 further includes a dirt storage chamber 9, an inclined surface diversion chamber 10, a dirt storage door 11, and a diversion branch pipe 30. The dirt storage chamber 9 is fixedly connected to the outer wall of the water storage tank 17. The dirt storage door 11 is hinged to the outer wall of the dirt storage chamber 9. The inclined surface diversion chamber 10 is fixedly connected to the bottom of the dirt storage chamber 9. The diversion branch pipe 30 is communicated with the inclined surface diversion chamber 10. There are three continuously arranged dirt storage mechanisms 303 which are evenly distributed. The outer walls of the three diversion branch pipes 30 are all communicated with the same main diversion pipe 12.

[0026] In this implementation scheme, the second motor 19 rotates continuously, so that the second motor 19 drives the three groups of fishing mechanisms 202 to fish the impurities in the three semi-circular water leakage grooves 24 through the transmission gear one 18 and the first chain 8, maintaining the water permeability of the semi-circular water leakage grooves 24. The first shaft rod 20 rotates counterclockwise as shown, so that the slag fishing plate 32 picks up the existing impurities in the semi-circular water leakage groove 24. At the same time, when the driving gear 35 meshes with the flipping rack 34, that is, when the slag fishing plate 32 moves to be flush with the top of the semi-circular water leakage groove 24, the flipping rack 34 rotates 180 degrees, so that the flipping rack 34 drives the second shaft rod 36 and the two second gears 41 to rotate, so that at this time the slag fishing plate 32 rotates along the hinge joint of the hinge rod 40 and the fishing rack 33. The originally upward-facing side of the fishing rack 33 now covers above the dirt storage chamber 9, pouring the impurities in the semi-circular water leakage groove 24 into the dirt storage chamber 9, preventing the semi-circular water leakage groove 24 from being blocked by impurities, and at the same time promoting the continuous treatment of sewage, avoiding the need to stop the operating device when cleaning impurities. Figure 6 As shown, it rotates counterclockwise, so that the slag fishing plate 32 picks up the existing impurities in the semi-circular water leakage groove 24. At the same time, when the driving gear 35 meshes with the flipping rack 34, that is, when the slag fishing plate 32 moves to be flush with the top of the semi-circular water leakage groove 24, the flipping rack 34 rotates 180 degrees, so that the flipping rack 34 drives the second shaft rod 36 and the two second gears 41 to rotate, so that at this time the slag fishing plate 32 rotates along the hinge joint of the hinge rod 40 and the fishing rack 33. The originally upward-facing side of the fishing rack 33 now covers above the dirt storage chamber 9, pouring the impurities in the semi-circular water leakage groove 24 into the dirt storage chamber 9, preventing the semi-circular water leakage groove 24 from being blocked by impurities, and at the same time promoting the continuous treatment of sewage, avoiding the need to stop the operating device when cleaning impurities.

[0027] Among them, the uniform water sprinkling mechanism 404 includes two pressing rods 13, two first springs 31, two longitudinal rack plates 45, two ratchets 47, two ratchet pawl assemblies 38, and two transmission gears two 29. The two pressing rods 13 are symmetrically distributed and are slidably connected to the lowermost dirt storage chamber 9. The top ends of the two first springs 31 are fixedly connected to the pressing rods 13 through fixed blocks. The bottom ends of the two first springs 31 are fixedly connected to the dirt storage chamber 9 through fixed blocks. The two longitudinal rack plates 45 are respectively fixedly connected to the two pressing rods 13. The two ratchets 47 are distributed in a circular array. The two ratchet pawl assemblies 38 are respectively engaged with the two ratchets 47. The two ratchets 47 are fixedly connected through a set shaft rod. The two transmission gears two 29 are respectively rotatably connected to the two ratchets 47 through a set shaft rod.

[0028] Among them, the uniform sprinkling mechanism 404 further includes a first rack 44, a loop-shaped sliding seat 48, a sliding 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 loop-shaped sliding seat 48 is fixedly connected to the lowermost water receiving tank 17. The sliding rod 49 is slidably connected to the loop-shaped sliding seat 48. The two first mounting plates 43 are fixedly connected to the lowermost water receiving tank 17. Two third springs 26 are fixedly connected to each first mounting plate 43. The end portions of every two third springs 26 away from the first mounting plate 43 are fixedly connected to the trapezoidal push blocks 46. The two ratchets 47 are rotatably connected to the second mounting plate 50 through the provided shaft rods. The second mounting plate 50 is fixedly connected to the lowermost inclined surface diversion cavity 10.

[0029] In this implementation scheme, during the process of the slag scraping plate 32 flipping, the pressing rod 13 will be pressed downward, so that at this time, the pressing rod 13 drives the second transmission gear 29 to rotate through the longitudinal rack plate 45. The second transmission gear 29 drives the ratchet 47 to rotate through the pawl assembly 38. Due to the action of the two trapezoidal push blocks 46, the sliding rod 49 will slide along the shape of the loop-shaped sliding seat 48. As Figure 12 shown, at this time, the first rack 44 meshes with the left ratchet 47. Therefore, when the longitudinal rack plate 45 moves downward, it drives the second water outlet 28 to move backward for a certain distance. Since the first mounting seat 6 rotates continuously, the water flowing out of the second water outlet 28 will fall into the biofilm tray 16 in a circular form, from the outer circle to the inner circle. When the sliding rod 49 is as Figure 13 shown, when the slideway above the loop-shaped sliding seat 48 gradually contacts the inclined surface of the trapezoidal push block 46, at this time, the ratchet 47 drives the first rack 44 to move again, so that the sliding rod 49 first compresses the third spring 26, and then under the elastic force of the third spring 26, it moves into the slideway below the loop-shaped sliding seat 48. At this time, the first rack 44 meshes with the other ratchet 47, so that the pressing rod 13 on the other side drives the second water outlet 28 to gradually wind from the inner circle to the outer circle, avoiding the problem of uneven water distribution on the biofilm tray 16 and poor treatment effect.

[0030] The following is a detailed explanation of the specific working principle and usage method of the present invention: When in use, the sewage is connected to the water inlet pipe 22. The three semi-circular water leakage grooves 24 are arranged from top to bottom, and the filtration holes are arranged from large to small. First, the sewage enters the uppermost semi-circular water leakage groove 24 through the water inlet pipe 22. The impurities with large particle sizes are intercepted by the semi-circular water leakage groove 24, and the remaining water flows into the water storage tank 17 and then flows into the middle semi-circular water leakage groove 24 through the water pipe 1. The impurities with medium particle sizes are intercepted by the middle semi-circular water leakage groove 24, and so on. Finally, the impurities with small particle sizes are intercepted by the lowermost semi-circular water leakage groove 24. The water flows into the biological membrane tray 16 through the water outlet 1, the water outlet hose 27, and the water outlet 2. The rotation of the first motor 4 can drive the biological membrane tray 16 to rotate through the bearing leakage tray 15, so that the sewage is in full contact with the biological membrane tray 16. At the same time, the ventilation door panel 2 is opened so that oxygen can enter the treatment tank 1. The rotation of the bearing leakage tray 15 promotes the circulation of the air flow, and there is no need to additionally set a blower. Finally, the treated water flows out from the water outlet pipe 3.

[0031] The second motor 19 rotates continuously, so that the second motor 19 drives the three salvage mechanisms 202 to salvage the impurities in the three semi-circular water leakage grooves 24 through the transmission gear 1 and the first chain 8, maintaining the water permeability of the semi-circular water leakage grooves 24. The first shaft rod 20 rotates counterclockwise as shown, so that the slag salvage plate 32 scoops up the existing impurities in the semi-circular water leakage groove 24. At the same time, when the driving gear 35 meshes with the flipping rack 34, that is, when the slag salvage plate 32 moves to be flush with the top of the semi-circular water leakage groove 24, the flipping rack 34 rotates 180 degrees, so that the flipping rack 34 drives the second shaft rod 36 and the two second gears 41 to rotate, so that at this time the slag salvage plate 32 rotates along the hinge of the hinge rod 40 and the salvage frame 33. The originally upward-facing side of the salvage frame 33 now covers the above of the sewage storage cavity 9, pouring the impurities in the semi-circular water leakage groove 24 into the sewage storage cavity 9, preventing the semi-circular water leakage groove 24 from being blocked by impurities, and promoting the continuous treatment of sewage, avoiding the need to stop the operation of the device when cleaning the impurities. Figure 6 At the same time, when the slag salvage plate 32 flips, it will press down the pressure rod 13, so that at this time the pressure rod 13 drives the transmission gear 2 through the longitudinal rack plate 45. The transmission gear 2 drives the ratchet 47 to rotate through the pawl assembly 38. Due to the action of the two trapezoidal push blocks 46, the slide rod 49 will slide along the shape of the return slide seat 48. As shown, at this time the first rack 44 meshes with the left ratchet 47, so when the longitudinal rack plate 45 moves downward, it drives the water outlet 2 to move backward a certain distance. Since the mounting seat 1 rotates continuously, the water flowing out of the water outlet 2 will fall into the biological membrane tray 16 in a circular form, from the outer circle to the inner circle. When the slide rod 49 moves along as shown in

[0032] Figure 12 Figure 13 Figure 13 Figure 13As shown in the figure, when the slideway above the loop-shaped slide block 48 gradually contacts the inclined surface of the trapezoidal push block 46, at this time, the ratchet wheel 47 drives the first rack 44 to move again, so that the slide rod 49 first compresses the third spring 26, and then moves into the slideway below the loop-shaped slide block 48 under the elastic force of the third spring 26. At this time, the first rack 44 meshes with another ratchet wheel 47, so that the pressing rod 13 on the other side drives the second water outlet 28 to gradually wind from the inner circle to the outer circle, avoiding the problem of uneven water distribution on the biofilm tray 16 and poor treatment effect.

[0033] Since the dirt storage cavity 9 itself has water permeability, when there is still residual water in the fished impurities, it can flow into the inclined surface diversion cavity 10 through the dirt storage cavity 9 and be diverted to the bearing leakage tray 15 through the diversion branch pipe 30 and the main diversion pipe 12.

[0034] Further explanation, the above fixed connection, unless otherwise clearly specified and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An urban and rural sewage treatment device for environmental protection, comprising a treatment tank (1). A motor bracket (5) is fixedly connected to the outer wall of the bottom 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 bearing leakage tray (15). A biological film tray (16) is arranged on the inner wall of the bearing leakage tray (15). A waterproof cavity (14) is arranged between the bearing leakage tray (15) and the treatment tank (1), and the waterproof cavity (14) is fixedly connected to the treatment tank (1). Three evenly distributed first mounting seats (6) are fixedly connected to the inner wall of the treatment tank (1). A water inlet pipe (22) is communicated with the inner wall of the treatment tank (1). A water outlet pipe (3) is communicated with the outer wall of the bottom of the treatment tank (1). A ventilation door panel (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). It is characterized in that, It further includes: A multi-stage treatment mechanism (101) for performing hierarchical filtration on sewage. The multi-stage treatment mechanism (101) is installed on the biological membrane tray (16); A salvage mechanism (202) for cooperating with the rotation of the second motor (19) to salvage the sediment in the multi-stage treatment mechanism (101) and maintain the water filtration property of the multi-stage treatment mechanism (101). The salvage mechanism (202) is installed on the multi-stage treatment mechanism (101); A continuous sewage storage mechanism (303) for cooperating with the rotation of the second motor (19) to continuously collect the sediment salvaged by the salvage mechanism (202). The continuous sewage storage mechanism (303) is installed on the multi-stage treatment mechanism (101); And a uniform water spraying mechanism (404) for cooperating with the continuous sewage storage mechanism (303) to enable the filtered sewage to be evenly sprayed on the biological membrane tray (16), which helps the microorganisms in the sewage to be fully decomposed. The uniform water spraying mechanism (404) is installed on the multi-stage treatment mechanism (101).

2. An urban and rural sewage treatment device for environmental protection according to claim 1, characterized in that: The multi-stage treatment mechanism (101) includes a first water outlet (25), a water outlet hose (27), a second water outlet (28), two first water pipes (21), three water storage tanks (17), three annular chutes (23) and three semi-circular water leakage grooves (24). The three water storage tanks (17) are respectively fixedly connected to three first mounting seats (6). The three semi-circular water leakage grooves (24) are arranged inside the water storage tanks (17). The three annular chutes (23) are respectively fixedly connected to the three semi-circular water leakage grooves (24). The two first water pipes (21) are respectively communicated with two adjacent water storage tanks (17) and the first water pipes (21). The first water outlet (25) is communicated with the lowermost water storage tank (17). The water outlet hose (27) is connected to the first water outlet (25). The second water outlet (28) is connected to the water outlet hose (27).

3. An urban and rural sewage treatment device for environmental protection according to claim 2, characterized in that: The salvage mechanism (202) includes a first transmission gear (18), a first shaft rod (20), a slag salvage plate (32), a salvage frame (33), a second spring (37) and a hinge rod (40). The first shaft rod (20) is rotatably connected to the semi-circular water leakage groove (24). The first transmission gear (18) is fixedly connected to the end of the first shaft rod (20). The outer wall of the slag salvage plate (32) is fixedly connected to the hinge rod (40). The hinge rod (40) is rotatably connected to the salvage frame (33) through a provided shaft rod. The second spring (37) is fixedly connected between the slag salvage plate (32) and the salvage frame (33).

4. An urban and rural sewage treatment device for environmental protection according to claim 3, characterized in that: There are three sets of the salvage mechanism (202). The outer walls of the three first transmission gears (18) are sleeved with the same first chain (8). The output shaft of the second motor (19) is fixedly connected to one of the first transmission gears (18).

5. An urban and rural sewage treatment device for environmental protection according to claim 4, characterized in that: The continuous dirt storage mechanism (303) includes a flipping rack (34), a driving gear (35), a second shaft rod (36), a waterproof cover (39), a second chain (42) and two second gears (41). The second chain (42) is sleeved on the outer walls of the two second gears (41). One of the second gears (41) is fixedly connected to the slag scraping plate (32) through a provided shaft rod, and the other second gear (41) is rotatably connected to the fishing frame (33). The waterproof cover (39) covers the outside of the second chain (42) and the two second gears (41), and the waterproof cover (39) is fixedly connected to the fishing frame (33). The second shaft rod (36) is fixedly connected to the other second gear (41), the driving gear (35) is fixedly connected to the end of the second shaft rod (36), the flipping rack (34) is fixedly connected to the outer wall of the annular chute (23), and the driving gear (35) meshes with the flipping rack (34).

6. An urban and rural sewage treatment device for environmental protection according to claim 5, characterized in that: The continuous dirt storage mechanism (303) further includes a dirt storage cavity (9), an inclined surface diversion cavity (10), a dirt storage door (11) and a diversion branch pipe (30). The dirt storage cavity (9) is fixedly connected to the outer wall of the water storage tank (17). The dirt storage door (11) is hinged to the outer wall of the dirt storage cavity (9). The inclined surface diversion cavity (10) is fixedly connected to the bottom of the dirt storage cavity (9). The diversion branch pipe (30) is communicated with the inclined surface diversion cavity (10). There are three continuous dirt storage mechanisms (303) evenly distributed, and the outer walls of the three diversion branch pipes (30) are all communicated with the same main diversion pipe (12).

7. An urban and rural sewage treatment device for environmental protection according to claim 6, characterized in that: The uniform water spraying mechanism (404) includes two pressure rods (13), two first springs (31), two longitudinal rack plates (45), two ratchets (47), two ratchet pawl assemblies (38) and two transmission gears II (29). The two pressure rods (13) are symmetrically distributed and are slidably connected to the lowermost dirt storage cavity (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 cavity (9) through fixing blocks. The two longitudinal rack plates (45) are respectively fixedly connected to the two pressure rods (13). The two ratchets (47) are distributed in a circumferential array. The two ratchet pawl assemblies (38) are respectively meshed with the two ratchets (47). The two ratchets (47) are fixedly connected through a provided shaft rod. The two transmission gears II (29) are respectively rotatably connected to the two ratchets (47) through a provided shaft rod.

8. An urban and rural sewage treatment device for environmental protection according to claim 7, characterized in that: The uniform sprinkling mechanism (404) further includes a first rack (44), a loop-shaped sliding seat (48), a sliding 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 loop-shaped sliding seat (48) is fixedly connected to the lowermost water receiving tank (17). The sliding rod (49) is slidably connected to the loop-shaped sliding seat (48). The two first mounting plates (43) are fixedly connected to the lowermost water receiving tank (17). Two third springs (26) are fixedly connected to each first mounting plate (43). The ends of every two third springs (26) away from the first mounting plate (43) are fixedly connected to the trapezoidal push block (46). Two ratchets (47) are rotatably connected to the second mounting plate (50) through the provided shaft rods. The second mounting plate (50) is fixedly connected to the lowermost inclined surface diversion cavity (10).

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