New rural efficient self-cleaning septic tank purification device

By combining multi-stage filtration with a self-cleaning structure, the problem of low treatment efficiency in rural septic tanks has been solved, achieving efficient sewage treatment and stable operation, improving effluent quality and device lifespan, and reducing maintenance difficulty.

CN224056905UActive Publication Date: 2026-03-31NANTONG SANJIA ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing rural septic tank systems have low treatment efficiency, insufficient sewage treatment, inadequate retention time, lack of necessary filtration and aeration units, are prone to clogging and difficult to maintain, thus affecting environmental improvement and water quality.

Method used

Design a multi-stage filtration system comprising a primary sedimentation tank, a secondary sedimentation tank, and a filter tank. Incorporate a self-cleaning structure, use stainless steel meshes with different pore sizes and cleaning components, and utilize a blower to drive the aeration pipes to generate airflow to clean the filter mesh, thereby achieving multi-stage sedimentation and high-efficiency filtration.

Benefits of technology

It improves wastewater treatment efficiency, ensures effluent quality meets discharge standards, reduces maintenance costs, extends equipment lifespan, achieves long-term stable operation, and complies with environmental protection requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of new rural domestic sewage treatment, and particularly relates to a new rural efficient self-cleaning septic tank purification device which comprises a first-stage settling tank, a second-stage settling tank and a filter tank, a first-stage filter screen and a second-stage filter screen are sequentially arranged in the filter tank from outside to inside, the aperture of the second-stage filter screen is smaller than that of the first-stage filter screen, and the aperture of the second-stage filter screen is smaller than that of the second-stage filter screen. An aeration pipe and a plurality of cleaning parts are arranged between the primary filter screen and the secondary filter screen, the air inlet end of the aeration pipe is connected with a fan, the plurality of cleaning parts collide and clean the outer surface of the secondary filter screen under the action of airflow of the fan, a water pumping pipe is arranged in the secondary filter screen, and the water pumping pipe penetrates out of the cover and is connected with a water pump. A water outlet of the water pump is connected with a water outlet pipe. According to the rural domestic sewage treatment device, multi-stage filtration and self-cleaning are integrated, so that new rural domestic sewage can be sufficiently precipitated and efficiently filtered, the sewage treatment effect is improved, and efficient treatment and long-term stable operation of the rural domestic sewage are realized.
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Description

Technical Field

[0001] This utility model belongs to the field of new rural domestic sewage treatment, specifically a new rural high-efficiency self-cleaning septic tank purification device. Background Technology

[0002] Currently, many rural septic tank systems have significant shortcomings in wastewater treatment, generally facing low treatment efficiency and failing to achieve efficient wastewater purification. Specifically, the deficiencies and shortcomings of existing technologies are mainly reflected in the following aspects:

[0003] 1. Inadequate treatment: Many rural septic tanks have limited design and treatment capacity, which cannot fully remove suspended solids and organic matter from sewage, resulting in poor effluent quality and difficulty in meeting environmental discharge standards;

[0004] 2. Limited retention time: The retention time of sewage in the septic tank is crucial to the treatment effect. However, existing devices often have poor design or insufficient capacity, resulting in a short retention time for sewage, which cannot fully complete the decomposition, sedimentation and other treatment processes, thus affecting the overall treatment effect.

[0005] 3. Limited Treatment Process: Some rural septic tanks lack necessary filtration and aeration units, limiting the treatment process and hindering effective water quality improvement. Furthermore, some devices are prone to clogging and difficult to maintain, further restricting their treatment efficiency and lifespan.

[0006] In summary, existing rural septic tank systems have significant defects and shortcomings in sewage treatment, such as insufficient treatment, limited retention time, and limited treatment process. These problems not only affect the improvement of the rural environment but may also pollute surrounding water bodies and soil.

[0007] Therefore, there is an urgent need for a new, efficient, self-cleaning septic tank purification device for rural areas. Utility Model Content

[0008] The purpose of this invention is to provide a high-efficiency self-cleaning septic tank purification device for new rural areas, which integrates multi-stage filtration and self-cleaning into one unit, enabling sufficient sedimentation and efficient filtration of domestic sewage in new rural areas, improving the sewage treatment effect, and achieving efficient treatment and long-term stable operation of rural domestic sewage. It can not only improve the effluent quality to a higher level and meet the discharge standards, but also reduce maintenance costs, and has significant social and environmental benefits, providing strong support for the improvement of the new rural environment and the protection of water resources.

[0009] To solve the above-mentioned technical problems, this utility model provides a high-efficiency self-cleaning septic tank purification device for new rural areas, including a primary sedimentation tank, a secondary sedimentation tank, and a filter tank connected sequentially from left to right. The top of the primary sedimentation tank, the secondary sedimentation tank, and the filter tank are respectively provided with a cover. The primary sedimentation tank has a sewage inlet on one side and an overflow port one communicating with the inner cavity of the secondary sedimentation tank on the other side. The overflow port one is located below the sewage inlet. The secondary sedimentation tank has an overflow port two communicating with the inner cavity of the filter tank on the side away from the overflow port one.

[0010] The filter box contains a primary filter and a secondary filter arranged sequentially from the outside in. The pore size of the secondary filter is smaller than that of the primary filter. An aeration pipe and several cleaning components are provided between the primary and secondary filters. The air inlet of the aeration pipe is connected to a blower. The cleaning components clean the outer surface of the secondary filter by collision under the airflow of the blower. A water suction pipe is provided inside the secondary filter. The water suction pipe extends out of the cover and is connected to a water pump. The outlet of the water pump is connected to a water outlet pipe.

[0011] Furthermore, both the primary filter and the secondary filter are cylindrical, with the primary filter being a stainless steel mesh with a 5mm aperture and the secondary filter being a precision-grade stainless steel mesh.

[0012] Furthermore, the aperture of the precision stainless steel mesh is greater than 1000 mesh.

[0013] Furthermore, the aeration pipe includes a vertical pipe and a horizontal pipe connected to each other. The vertical pipe is located near the inner wall of the primary filter screen, and the horizontal pipe is located below the secondary filter screen and near the bottom of the primary filter screen. The horizontal pipe is provided with a plurality of aeration holes.

[0014] Furthermore, the cleaning component is a cleaning ball.

[0015] Furthermore, overflow port one and overflow port two are respectively located in the middle of the primary sedimentation tank and the secondary sedimentation tank, and overflow port one and overflow port two are respectively provided with overflow pipe one and overflow pipe two.

[0016] Furthermore, the first overflow pipe and the second overflow pipe have an L-shaped structure.

[0017] Furthermore, the fan and the water pump are respectively fixed to the cover of the filter box.

[0018] Furthermore, the wastewater inlet is equipped with a wastewater pipe, which is L-shaped and its lower end extends into the primary sedimentation tank.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model of a high-efficiency self-cleaning septic tank purification device for new rural areas integrates multi-stage filtration and self-cleaning into one unit, enabling new rural domestic sewage to undergo sufficient sedimentation and efficient filtration, improving the sewage treatment effect, and achieving efficient treatment and long-term stable operation of rural domestic sewage. It can not only improve the effluent quality to a high level and meet the discharge standards, but also reduce maintenance costs, and has significant social and environmental benefits, providing strong support for the improvement of the new rural environment and the protection of water resources.

[0021] Specifically, the design of a primary sedimentation tank, a secondary sedimentation tank, and primary and secondary filters within the filter tank forms a multi-stage filtration system. This allows for thorough sedimentation and efficient filtration of domestic sewage from new rural areas, improving sewage treatment efficiency. It effectively intercepts and removes tiny suspended solids and impurities from the sewage, raising the effluent quality to a higher level to meet discharge standards. Furthermore, the self-cleaning structure of the blower, aeration pipes, and cleaning components utilizes a blower to drive the aeration pipes, generating a stable airflow. This airflow causes the cleaning components to move within the primary filter, continuously impacting and cleaning the outer surface of the secondary filter. This not only effectively prevents clogging of the secondary filter, significantly reducing the frequency and difficulty of manual maintenance, but also improves the stability and operating efficiency of the device.

[0022] 2. This utility model constructs a highly efficient multi-stage filtration system by combining a 5mm stainless steel mesh with a precision stainless steel filter. The 5mm stainless steel mesh serves as the primary filtration layer, effectively intercepting large particles of impurities and preventing clogging of subsequent treatment units. The precision stainless steel filter serves as the secondary filtration layer, further refining the filtration and efficiently removing tiny suspended solids and impurities, ensuring that the effluent water quality meets high standards. This combined design not only significantly improves filtration efficiency but also effectively extends the service life of the entire device.

[0023] 3. This utility model requires no chemical additives during the entire wastewater treatment process, avoiding chemical residues and secondary pollution, which is environmentally friendly and in line with the green, environmentally friendly and sustainable development concept. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the new rural high-efficiency self-cleaning septic tank purification device of this utility model;

[0026] In the diagram: 1-Primary sedimentation tank, 2-Secondary sedimentation tank, 3-Filter box, 4-Lid, 5-Sewage inlet, 6-Primary filter screen, 7-Secondary filter screen, 8-Aeration pipe, 9-Cleaning component, 10-Blower, 11-Pumping pipe, 12-Water pump, 13-Outlet pipe, 14-Overflow pipe one, 15-Overflow pipe two, 16-Sewage pipe, 81-Vertical pipe, 82-Horizontal pipe, 821-Aeration hole. Detailed Implementation

[0027] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In one specific embodiment of this utility model, such as Figure 1 As shown, a new rural high-efficiency self-cleaning septic tank purification device includes a primary sedimentation tank 1, a secondary sedimentation tank 2, and a filter tank 3 connected sequentially from left to right. The tops of the primary sedimentation tank 1, the secondary sedimentation tank 2, and the filter tank 3 are respectively provided with covers 4. The primary sedimentation tank 1 has a sewage inlet 5 on one side and an overflow port 1 communicating with the inner cavity of the secondary sedimentation tank 2 on the other side. The overflow port 1 is located below the sewage inlet 5. The secondary sedimentation tank 2 has an overflow port 2 communicating with the inner cavity of the filter tank 3 on the side away from the overflow port 1.

[0029] Inside the filter box 3, a primary filter screen 6 and a secondary filter screen 7 are arranged sequentially from the outside to the inside. The aperture of the secondary filter screen 7 is smaller than that of the primary filter screen 6. An aeration pipe 8 and several cleaning components 9 are provided between the primary filter screen 6 and the secondary filter screen 7. The air inlet end of the aeration pipe 8 is connected to a blower 10. Under the airflow of the blower 10, the several cleaning components 9 collide and clean the outer surface of the secondary filter screen 7. A water suction pipe 11 is provided inside the secondary filter screen 7. The water suction pipe 11 extends out of the cover 4 and is connected to a water pump 12. The outlet of the water pump 12 is connected to a water outlet pipe 13.

[0030] This utility model of a high-efficiency self-cleaning septic tank purification device for new rural areas integrates multi-stage filtration and self-cleaning into one unit, enabling new rural domestic sewage to undergo sufficient sedimentation and efficient filtration, improving the sewage treatment effect, and achieving efficient treatment and long-term stable operation of rural domestic sewage. It can not only improve the effluent quality to a high level and meet the discharge standards, but also reduce maintenance costs, and has significant social and environmental benefits, providing strong support for the improvement of the new rural environment and the protection of water resources.

[0031] Specifically, a multi-stage filtration system is formed through the design of a primary sedimentation tank, a secondary sedimentation tank, and primary and secondary filters within the filter tank. This system ensures thorough sedimentation and efficient filtration of domestic sewage from new rural areas, improving sewage treatment efficiency and effectively intercepting and removing tiny suspended solids and impurities, thus raising the effluent quality to a higher level and meeting discharge standards. The self-cleaning structure design of the blower, aeration pipes, and cleaning components utilizes a blower to drive the aeration pipes, generating a stable airflow. This airflow causes the cleaning components to move within the primary filter, continuously impacting and cleaning the outer surface of the secondary filter. This not only effectively prevents clogging of the secondary filter and significantly reduces the frequency and difficulty of manual maintenance but also improves the stability and operating efficiency of the device. In this embodiment, the cleaning component 9 is a cleaning ball, which continuously impacts and cleans the outer surface of the secondary filter.

[0032] In this embodiment, both the primary filter 6 and the secondary filter 7 are cylindrical. The primary filter 6 is a stainless steel mesh with a 5mm pore size, and the secondary filter 7 is a precision-grade stainless steel mesh. By combining the 5mm stainless steel mesh and the precision-grade stainless steel mesh, a highly efficient multi-stage filtration system is constructed. The 5mm stainless steel mesh serves as the primary filtration layer, effectively intercepting large particles and preventing clogging of subsequent treatment units. The precision-grade stainless steel mesh serves as the secondary filtration layer, further refining the filtration and efficiently removing tiny suspended solids and impurities, ensuring that the effluent water quality meets high standards. This combined design not only significantly improves filtration efficiency but also effectively extends the service life of the entire device. Specifically, a precision-grade stainless steel mesh with a pore size greater than 1000 mesh can be selected. Of course, in other embodiments, the appropriate mesh can be chosen based on the required filtration precision.

[0033] In this embodiment, the aeration pipe 8 includes a vertical pipe 81 and a horizontal pipe 82 connected to each other. The vertical pipe 81 is located near the inner wall of the primary filter screen 6, and the horizontal pipe 82 is located below the secondary filter screen 7 and near the bottom of the primary filter screen 6. The horizontal pipe 82 is provided with a plurality of aeration holes 821. This design can generate a stable airflow by driving the aeration pipe with a fan. The airflow drives the cleaning balls to move inside the primary filter screen, which can not only continuously clean the outer periphery of the secondary filter screen by collision, but also clean the bottom of the secondary filter screen by collision with the cleaning balls, thereby improving the cleanliness of the secondary filter screen.

[0034] In this embodiment, overflow outlet one and overflow outlet two are respectively located in the middle of the primary sedimentation tank 1 and the secondary sedimentation tank 2. Overflow outlet one and overflow outlet two are respectively provided with overflow pipe one 14 and overflow pipe two 15. This ensures that while the sewage undergoes multi-stage sedimentation, it is not necessary to wait for the primary sedimentation tank 1 and the secondary sedimentation tank 2 to be full of sewage before entering the filter tank for filtration, which can greatly improve the sewage treatment efficiency. In this embodiment, overflow pipe one 14 and overflow pipe two 15 are L-shaped. Of course, in other embodiments, overflow pipes of other shapes can also be selected.

[0035] In this embodiment, the fan 10 and the water pump 12 are respectively fixed on the upper surface of the cover 4 of the filter box 3, and the top of the primary filter screen 6 is fixed on the lower surface of the cover 4. Here, the secondary filter screen 7 is connected to the water pumping pipe 11 by threads.

[0036] In this embodiment, the sewage inlet 5 is equipped with a sewage pipe 16, which is L-shaped and its lower end extends into the primary sedimentation tank 1, thereby reducing the splashing of sewage when it enters.

[0037] The workflow of this embodiment is as follows:

[0038] The domestic sewage from the new rural area first flows into the primary sedimentation tank 1 through the sewage pipe 16 by natural gravity. In the primary sedimentation tank 1, heavier impurities and particles are deposited at the bottom of the tank due to gravity, while the relatively clear liquid flows smoothly from the middle of the primary sedimentation tank 1 into the secondary sedimentation tank 2 through the overflow pipe 14.

[0039] In the secondary sedimentation tank 2, the wastewater undergoes a further sedimentation process to remove more suspended solids. The clearer liquid then flows naturally into the filter tank 3 through the overflow pipe 15. At this point, the wastewater is relatively pure, but it still needs to undergo fine filtration.

[0040] Inside the filter box 3, the clear liquid rises and first passes through a 5mm stainless steel mesh for preliminary filtration to remove larger impurities. Then, the clear liquid enters a finer precision stainless steel filter, which can effectively intercept tiny suspended solids and impurities to ensure that the effluent water quality meets high standards.

[0041] Finally, the purified water, which has been deeply filtered by a precision stainless steel filter, is drawn out from the water pump 12 through the water pipe 11 and discharged cleanly through the water outlet pipe 13.

[0042] Here, because the precision stainless steel filter screen may face the risk of clogging during operation, in order to solve this problem, the blower 10 drives the aeration pipe 8 to generate a stable airflow. The airflow drives the cleaning ball to move freely within the 5mm stainless steel mesh, continuously colliding and cleaning the precision stainless steel filter screen, effectively preventing clogging.

[0043] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A new rural high-efficiency self-cleaning septic tank purification device, characterized in that, It includes a first sedimentation tank (1), a second sedimentation tank (2) and a filter tank (3) connected in sequence from left to right, the top of the first sedimentation tank (1), the second sedimentation tank (2) and the filter tank (3) is respectively provided with a cover (4), one side of the first sedimentation tank (1) is provided with a sewage inlet (5), the other side is provided with overflow port one which is communicated with the inner cavity of the second sedimentation tank (2), the overflow port one is located below the sewage inlet (5), the side of the second sedimentation tank (2) away from the overflow port one is provided with overflow port two which is communicated with the inner cavity of the filter tank (3); The filter tank (3) is provided with a first filter screen (6) and a second filter screen (7) from outside to inside, and the aperture of the second filter screen (7) is smaller than that of the first filter screen (6), the first filter screen (6) and the second filter screen (7) are provided with an aeration pipe (8) and a plurality of cleaning elements (9), the air inlet end of the aeration pipe (8) is connected with a fan (10), a plurality of cleaning elements (9) are collided and cleaned on the outer surface of the second filter screen (7) under the action of the airflow of the fan (10), the second filter screen (7) is provided with a water pump (11), the water pump (11) is connected with a water pump (12) outside the cover (4), and the water outlet of the water pump (12) is connected with a water outlet pipe (13).

2. The new rural high-efficiency self-cleaning septic tank purification device according to claim 1, characterized in that, The first filter screen (6) and the second filter screen (7) are both cylindrical, the first filter screen (6) is a stainless steel screen with an aperture of 5mm, and the second filter screen (7) is a precision stainless steel screen.

3. The new rural high-efficiency self-cleaning septic tank purification device according to claim 2, characterized in that, The aperture of the precision stainless steel screen is greater than 1000 meshes.

4. The new rural high-efficiency self-cleaning septic tank purification device according to claim 1, characterized in that, The aeration pipe (8) comprises a vertical pipe (81) and a horizontal pipe (82) connected with each other, the vertical pipe (81) is arranged close to the inner side wall of the first filter screen (6), the horizontal pipe (82) is arranged below the second filter screen (7) and close to the bottom of the first filter screen (6), and a plurality of aeration holes (821) are arranged on the horizontal pipe (82).

5. The new rural high-efficiency self-cleaning septic tank purification device according to claim 1, characterized in that, The cleaning element (9) is a cleaning ball.

6. The new rural high-efficiency self-cleaning septic tank purification device according to claim 1, characterized in that, The overflow port one and the overflow port two are arranged in the middle of the first sedimentation tank (1) and the second sedimentation tank (2) respectively, and the overflow port one and the overflow port two are respectively provided with overflow pipe one (14) and overflow pipe two (15).

7. The new rural efficient self-cleaning septic tank purification device according to claim 6, characterized in that, The overflow pipe one (14) and the overflow pipe two (15) are L-shaped structures.

8. The new rural high-efficiency self-cleaning septic tank purification device according to claim 1, characterized in that, The fan (10) and the water pump (12) are fixed on the cover (4) of the filter tank (3) respectively.

9. The new rural efficient self-cleaning septic tank purification device according to claim 1, characterized in that, The sewage inlet (5) is provided with a sewage pipe (16), and the sewage pipe (16) is L-shaped and its lower end extends into the first sedimentation tank (1).