Check device for microporous aerator for sewage treatment

Abstract

This utility model discloses a check device for a microporous aerator used in wastewater treatment, belonging to the field of wastewater treatment. It includes a microporous aerator body, with a microporous membrane at the upper end and a connector fixedly installed at the lower end. The connector is connected to a cavity within the microporous aerator body. A connecting pipe is movably installed at the lower end of the connector, with threaded caps at both ends. The threaded cap at the upper end of the connecting pipe is threaded onto the lower end of the connector. A check component for wastewater backflow is installed inside the connecting pipe. This check component effectively and quickly prevents wastewater backflow when aeration stops, avoiding a reduction in wastewater treatment efficiency and protecting the stable operation of the wastewater treatment system. Because it effectively prevents wastewater backflow, the treatment effect of the microporous aerator body is fully realized.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a check valve device for a microporous aerator used in wastewater treatment. Background Technology

[0002] Aerators are the core equipment of activated sludge treatment units. By increasing the dissolved oxygen content in wastewater, aerators facilitate the growth of microorganisms and biochemical reactions, thereby purifying the water. At the same time, the agitation generated during aeration enhances the contact between organic matter, microorganisms, and dissolved oxygen in the wastewater, improving the degradation efficiency of organic matter by microorganisms. The quality of aeration directly affects the efficiency of the aerobic biological treatment system. Therefore, selecting and using high-efficiency and energy-saving aerators is a key focus in the field of wastewater biological treatment.

[0003] Microporous flat plate aerators typically consist of a disc-shaped microporous membrane. When aeration is in operation, the aeration holes open to allow air to pass through, thereby achieving effective wastewater treatment. However, when aeration stops, existing technologies often cannot effectively prevent wastewater backflow in a timely manner, which can significantly reduce the treatment effect and may even have a negative impact on the entire wastewater treatment system.

[0004] Therefore, this utility model provides a check valve for a microporous aerator used in wastewater treatment to solve the above-mentioned problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a check valve for a microporous aerator used in wastewater treatment, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a microporous aerator body, with a microporous membrane at the upper end of the aerator body, and a connector fixedly installed at the lower end of the aerator body. The connector is connected to a cavity within the aerator body. A connecting pipe is movably installed at the lower end of the connector. Threaded caps are provided at both the upper and lower ends of the connecting pipe. The threaded cap at the upper end of the connecting pipe is threaded onto the lower end of the connector. A check valve assembly for wastewater backflow is provided inside the connecting pipe.

[0009] As a preferred technical solution of this application, the check valve assembly includes a fixed seat, which is fixedly installed inside the upper end of the connecting pipe. A limit block is fixedly installed inside the lower end of the connecting pipe. A protruding tube is fixedly installed on the upper side of the limit block. A sealing plate is movably fitted to the upper side of the protruding tube. A return spring is provided between the fixed seat and the sealing plate.

[0010] As a preferred technical solution of this application, a support tube is fixedly installed at the lower end of the fixed base, a movable groove is opened in the support tube, a guide rod is movably inserted in the movable groove, and the lower end of the guide rod is fixedly connected to the sealing plate.

[0011] As a preferred technical solution of this application, a sealing block is fixedly installed on the lower side of the sealing plate, the sealing block is movably inserted into the convex tube, and the cross-section of the sealing block is convex.

[0012] As a preferred technical solution of this application, a sealing sleeve is fixedly installed on the lower side of the sealing plate, the sealing sleeve is sleeved on the upper end of the convex tube, and the inner wall of the sealing sleeve is adapted to the outer wall of the upper end of the convex tube.

[0013] As a preferred technical solution of this application, sealing rings are glued to the lower side of the sealing plate and the side of the sealing block that is in contact with the inner wall of the convex tube.

[0014] (III) Beneficial Effects

[0015] By incorporating a backflow prevention component, wastewater backflow can be quickly and effectively prevented when aeration stops, thus avoiding a reduction in wastewater treatment efficiency and protecting the stable operation of the wastewater treatment system. Effective prevention of backflow allows the microporous aerator to fully utilize its treatment capacity, thereby improving overall wastewater treatment efficiency. The precise design and coordination between components ensure a stable overall structure, enabling it to withstand significant working pressure and extending its service life. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the check device of a microporous aerator for wastewater treatment.

[0017] Figure 2 This is a front view of the exploded structure of the check device of a microporous aerator for wastewater treatment.

[0018] Figure 3 This is a front view of the cross-sectional view of the connecting pipe in the check valve of a microporous aerator for wastewater treatment.

[0019] Figure 4 This is a front view of the cross-sectional view of the support pipe in the check valve of a microporous aerator for wastewater treatment.

[0020] In the picture:

[0021] 1. Microporous aerator body; 2. Microporous membrane; 3. Connector; 4. Connecting pipe; 5. Threaded cap; 6. Fixing base; 7. Support pipe; 8. Limiting block; 9. Protruding tube; 10. Movable groove; 11. Guide rod; 12. Sealing plate; 13. Sealing block; 14. Sealing sleeve; 15. Return spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a check valve for a microporous aerator used in wastewater treatment, such as... Figure 1-4 As shown, the check device of the microporous aerator for sewage treatment includes a microporous aerator body 1. A microporous membrane 2 is provided at the upper end of the microporous aerator body 1. A connector 3 is fixedly installed at the lower end of the microporous aerator body 1. The connector 3 is connected to the cavity inside the microporous aerator body 1. A connecting pipe 4 is movably installed at the lower end of the connector 3. Threaded caps 5 are provided at both the upper and lower ends of the connecting pipe 4. The threaded cap 5 at the upper end of the connecting pipe 4 is threadedly sleeved onto the lower end of the connector 3. A check component for sewage backflow is provided inside the connecting pipe 4.

[0024] During use, when the aerator stops working, sewage flows in from the top of the microporous aerator body 1, and the microporous membrane 2 is sealed by the check valve assembly, ensuring that sewage will not flow back into the pipe network through the microporous aerator body 1, thereby effectively solving the sewage backflow problem and improving sewage treatment efficiency.

[0025] The check valve assembly includes a fixed base 6, which is fixedly installed inside the upper end of the connecting pipe 4. A limit block 8 is fixedly installed inside the lower end of the connecting pipe 4. A protruding tube 9 is fixedly installed on the upper side of the limit block 8. A sealing plate 12 is movably attached to the upper side of the protruding tube 9. A return spring 15 is provided between the fixed base 6 and the sealing plate 12.

[0026] When the aerator stops working, sewage flows in through the microporous aerator body 1. When the sewage flows into the connecting pipe 4, it tends to flow downwards due to its own gravity. Under the restoring force of the return spring 15, the sealing plate 12 slides back to its original position and fits tightly against the convex tube 9, thereby achieving a seal between the limiting block 8 and the convex tube 9. This prevents sewage from flowing back into the pipe network through the microporous aerator body 1, effectively solving the sewage backflow problem and improving sewage treatment efficiency.

[0027] A support tube 7 is fixedly installed at the lower end of the fixed base 6. A movable groove 10 is opened in the support tube 7. A guide rod 11 is movably inserted in the movable groove 10. The lower end of the guide rod 11 is fixedly connected to the sealing plate 12.

[0028] When the sealing plate 12 slides up and down inside the connecting pipe 4, the sealing plate 12 drives the guide rod 11 to slide up and down inside the movable groove 10, thereby ensuring the stability of the sealing plate 12 when it slides up and down inside the connecting pipe 4 and avoiding tilting or displacement when the sealing plate 12 slides.

[0029] A sealing block 13 is fixedly installed on the lower side of the sealing plate 12. The sealing block 13 is movably inserted into the convex tube 9, and the cross-section of the sealing block 13 is convex.

[0030] When the sealing plate 12 slides inside the connecting pipe 4 and fits tightly against the convex pipe 9, the convex structure of the sealing block 13 can effectively increase the contact area between the sealing plate 12 and the convex pipe 9, thereby improving the sealing effect. In addition, the convex structure of the sealing block 13 can also play a guiding role, making the sealing plate 12 more stable during sliding and less prone to displacement or tilting. This design not only improves the sealing performance of the check valve assembly, but also enhances its stability and durability.

[0031] A sealing sleeve 14 is fixedly installed on the lower side of the sealing plate 12. The sealing sleeve 14 is sleeved on the upper end of the convex tube 9, and the inner wall of the sealing sleeve 14 is adapted to the outer wall of the upper end of the convex tube 9.

[0032] When the sealing plate 12 slides inside the connecting pipe 4 and drives the sealing sleeve 14 to the upper end of the convex pipe 9, the sealing sleeve 14 can be tightly fitted onto the upper outer wall of the convex pipe 9. This design further enhances the sealing performance of the check valve assembly. The tight fit between the sealing sleeve 14 and the convex pipe 9 effectively prevents sewage from flowing back through tiny gaps under high pressure, thereby ensuring the continuity and stability of the sewage treatment process.

[0033] Sealing rings are glued to the lower side of the sealing plate 12 and the side of the sealing block 13 that is in contact with the inner wall of the convex tube 9.

[0034] The use of sealing rings not only enhances the sealing performance of the structure, but also reduces wear caused by long-term friction, thereby extending the service life of the check valve assembly. At the same time, the sealing rings also have a certain degree of elasticity, which can adapt to slight deformation under different temperature and pressure conditions and maintain a stable sealing effect.

[0035] Working principle: When the aerator starts working, air flows into the connector 3 through the pipe network and connecting pipe 4, and is discharged through the micropores on the microporous membrane 2. When the air flows into the connecting pipe 4, it pushes the sealing plate 12 to slide upward in the connecting pipe 4. At this time, the sealing plate 12 drives the guide rod 11 to slide upward in the movable groove 10. At the same time, the sealing block 13 also moves upward in the convex tube 9. When the sealing plate 12 moves upward, it squeezes the reset spring 15. The air can flow into the connecting pipe 4 through the limiting block 8 and the convex tube 9 and then into the microporous membrane 2 through the connector 3. When the aerator stops working, sewage flows into the microporous membrane 2 at the upper end of the microporous aerator body 1. Since the sealing plate 12 is no longer pushed by the air, the restoring force of the reset spring 15 slides the sealing plate 12 back to its original position and fits tightly against the convex tube 9, thereby sealing the limiting block 8 and the convex tube 9 and effectively preventing the backflow of sewage.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A check valve for a microporous aerator used in wastewater treatment, comprising a microporous aerator body (1), characterized in that: The upper end of the microporous aerator body (1) is provided with a microporous membrane (2), and the lower end of the microporous aerator body (1) is fixedly installed with a connector (3). The connector (3) is connected to the cavity inside the microporous aerator body (1). The lower end of the connector (3) is movably installed with a connecting pipe (4). Both the upper and lower ends of the connecting pipe (4) are provided with threaded caps (5). The threaded cap (5) at the upper end of the connecting pipe (4) is threaded onto the lower end of the connector (3). The connecting pipe (4) is provided with a check valve assembly for sewage backflow.

2. The check valve device for a microporous aerator for wastewater treatment according to claim 1, characterized in that: The check valve assembly includes a fixed seat (6), which is fixedly installed inside the upper end of the connecting pipe (4). A limit block (8) is fixedly installed inside the lower end of the connecting pipe (4). A protruding tube (9) is fixedly installed on the upper side of the limit block (8). A sealing plate (12) is movably attached to the upper side of the protruding tube (9). A return spring (15) is provided between the fixed seat (6) and the sealing plate (12).

3. The check valve device for a microporous aerator for wastewater treatment according to claim 2, characterized in that: The lower end of the fixed base (6) is fixedly installed with a support tube (7), and a movable groove (10) is opened in the support tube (7). A guide rod (11) is movably inserted in the movable groove (10), and the lower end of the guide rod (11) is fixedly connected to the sealing plate (12).

4. The check valve device for a microporous aerator for wastewater treatment according to claim 2, characterized in that: A sealing block (13) is fixedly installed on the lower side of the sealing plate (12). The sealing block (13) is movably inserted into the convex tube (9). The cross-section of the sealing block (13) is convex.

5. The check valve device for a microporous aerator for wastewater treatment according to claim 2, characterized in that: A sealing sleeve (14) is fixedly installed on the lower side of the sealing plate (12). The sealing sleeve (14) is sleeved on the upper end of the convex tube (9). The inner wall of the sealing sleeve (14) is adapted to the outer wall of the upper end of the convex tube (9).

6. The check device for a microporous aerator for wastewater treatment according to claim 2, characterized in that: The lower side of the sealing plate (12) and the side of the sealing block (13) that is in contact with the inner wall of the convex tube (9) are both glued with sealing rings.

Images