Disc type rubber membrane micro-porous aerator

Abstract

The utility model provides a disc type rubber film micropore aerator belongs to sewage treatment aeration equipment technical field, this disc type rubber film micropore aerator includes aeration component, and aeration component includes mutually sealed and connected bottom disc and rubber diaphragm, and the bottom disc is formed with aeration cavity body with rubber diaphragm, and aeration cavity body is equipped with first air inlet, and rubber diaphragm is equipped with a plurality of S shape aeration micropore. S shape aeration micropore is in undulating form, can decompose gas pressure load into tangential force ( along the length direction of seam) and normal force ( along the width direction of seam), decomposes load through undulating form, and S type bending forces crack propagation to need continuous turning, gradually consumes crack propagation energy, eliminates the stress concentration phenomenon of traditional straight seam, reduces the possibility of rubber diaphragm tearing.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment aeration equipment, and more specifically, relates to a disc-type rubber membrane microporous aerator. Background Technology

[0002] Aeration devices are suitable for the aerobic zone of biological treatment tanks, effectively dispersing air from blowers evenly into the water and maintaining a stable oxygenation effect over a long period. The aerators close effectively when air supply stops. The disc-type rubber membrane microporous aerator has a disc-shaped structure, consisting of a microporous rubber membrane, a base, and a pressure cap. It is a high-efficiency oxygenation device suitable for continuous and intermittent aeration processes in wastewater treatment, meeting the oxygenation and mixing requirements of the tank. During operation, the rubber membrane expands under the pressure of air, automatically opening the micropores on the membrane, allowing airflow to pass through. Due to the inherent elasticity of the rubber membrane, the micropores automatically close when air supply stops, preventing clogging.

[0003] Traditional aerators have mostly linear aeration micropores, which are prone to stress concentration, meaning that cracks start from the end and then rapidly tear and expand. Utility Model Content

[0004] The purpose of this invention is to provide a disc-type rubber membrane microporous aerator that solves the problem of easy tearing of the aeration micropores in traditional aerators.

[0005] To achieve the above objectives, this utility model provides a disc-type rubber membrane microporous aerator, including an aeration component. The aeration component includes a base plate and a rubber membrane that are sealed to each other. An aeration chamber is formed between the base plate and the rubber membrane. The aeration chamber is provided with a first air inlet. The rubber membrane is provided with a plurality of S-shaped aeration micropores.

[0006] Optionally, the aeration chamber is provided with multiple support parts, the lower surface of the support parts is fixedly connected to the chassis, and the upper surface of the support parts is in movable contact with the lower surface of the rubber diaphragm.

[0007] Optionally, the first air inlet is located in the middle of the chassis, the support is elongated, and multiple support portions extend from the first air inlet to the edge of the aeration chamber. The multiple support portions divide the aeration chamber into multiple flow channels, and the multiple flow channels are connected to the first air inlet.

[0008] Optionally, the support portion is arc-shaped.

[0009] Optionally, the support portion is provided with multiple air guide grooves.

[0010] Optionally, the rubber diaphragm has a central region, a transition region, and an edge region, wherein the central region, the transition region, and the edge region are all annular, the transition region is disposed on the inner periphery of the edge region, and the central region is disposed on the inner periphery of the transition region;

[0011] The S-shaped aeration micropores set in the central area are the central aeration micropores, the S-shaped aeration micropores set in the transition area are the transition aeration micropores, and the S-shaped aeration micropores set in the edge area are the edge aeration micropores.

[0012] The length of the central aeration hole is greater than that of the transition aeration hole, and the length of the transition aeration hole is greater than that of the edge aeration hole.

[0013] Optionally, the disc-type rubber membrane microporous aerator further includes a flow guiding component, which has a flow guiding cavity inside. The air outlet of the flow guiding component is connected to the first air inlet, and the other end of the flow guiding component is provided with a second air inlet. A spiral flow guiding plate is provided inside the flow guiding cavity.

[0014] Optionally, the upper surface of the rubber diaphragm is provided with a nano zinc oxide composite layer.

[0015] Optionally, the edge of the rubber diaphragm is bent downward to form a connecting portion, and the inner periphery of the connecting portion is connected to the outer periphery of the chassis and is provided with a sealing ring.

[0016] Optionally, a clamp is provided on the outer periphery of the connecting part.

[0017] The beneficial effects of this utility model are as follows: It provides a disc-type rubber membrane microporous aerator, including an aeration component. The aeration component includes a base plate and a rubber membrane that are sealed together. An aeration chamber is formed between the base plate and the rubber membrane. The aeration chamber is provided with a first air inlet. The rubber membrane is provided with multiple S-shaped aeration micropores. The S-shaped aeration micropores are wave-shaped, which can decompose the air pressure load into tangential force (along the crack length direction) and normal force (along the crack width direction). By decomposing the load through the wave shape, the S-shaped bending forces the crack propagation to continuously change direction, gradually consuming the crack propagation energy, eliminating the stress concentration phenomenon of traditional straight cracks, and reducing the possibility of the rubber membrane tearing.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1A schematic structural diagram of a disc-type rubber membrane microporous aerator according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic structural diagram of a rubber diaphragm according to an embodiment of the present invention is shown.

[0022] Figure 3 A partial schematic structural diagram of a rubber diaphragm according to an embodiment of the present invention is shown.

[0023] Figure 4 A schematic structural diagram of a chassis according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic perspective view of a rubber diaphragm and chassis according to an embodiment of the present invention is shown.

[0025] Figure 6 A partial schematic structural diagram of a disc-type rubber membrane microporous aerator according to an embodiment of the present invention is shown.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Aeration component; 11. Chassis; 12. Rubber diaphragm; 13. Aeration chamber; 14. First air inlet; 15. S-shaped aeration hole; 15a. Central aeration hole; 15b. Transition aeration hole; 15c. Edge aeration hole; 16. Support; 17. Flow channel; 18. Air guide groove; 19. Central area; 20. Transition area; 21. Edge area; 22. Connecting part; 23. Sealing ring; 24. Clamp; 25. Flow guide component; 26. Flow guide chamber; 27. Flow guide plate; 28. Second air inlet. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] This embodiment provides a disc-type rubber membrane microporous aerator, such as... Figure 1-3 As shown, it includes an aeration component 1, which includes a chassis 11 and a rubber diaphragm 12 that are sealed to each other. An aeration chamber 13 is formed between the chassis 11 and the rubber diaphragm 12. The aeration chamber 13 is provided with a first air inlet 14, and the rubber diaphragm 12 is provided with a plurality of S-shaped aeration micropores 15.

[0030] In this embodiment, the rubber diaphragm 12 is made of ethylene propylene diene monomer (EPDM) rubber, and the chassis 11 is made of high-strength engineering plastic PP.

[0031] When the disc-type rubber membrane microporous aerator is working, compressed air enters the aeration chamber 13 through the first air inlet 14. The rubber diaphragm 12 expands under air pressure, causing the S-shaped aeration micropores 15 to open and generate microbubbles.

[0032] Specifically, the S-shaped aeration micropores 15 are wave-shaped, which can decompose the air pressure load into tangential force (along the length of the crack) and normal force (along the width of the crack). By decomposing the load through the wave shape, the S-shaped bending forces the crack to continuously turn, gradually consuming the crack propagation energy and eliminating the stress concentration phenomenon of traditional straight cracks, that is, the crack starts from the end and then rapidly tears and propagates.

[0033] Optionally, such as Figure 1 and 4 As shown, the aeration chamber 13 is provided with multiple support parts 16. The lower surface of the support part 16 is fixedly connected to the chassis 11, and the upper surface of the support part 16 is in contact with the lower surface of the rubber diaphragm 12.

[0034] Specifically, during the expansion and contraction of the rubber diaphragm 12, it will rub against the chassis 11. Providing a support portion 16 between the rubber diaphragm 12 and the chassis 11 can reduce the friction area and prevent localized wear and perforation. In this embodiment, the surface of the support portion 16 is polished to reduce wear on the rubber diaphragm 12.

[0035] Optionally, the first air inlet 14 is located in the middle of the chassis 11, the support part 16 is elongated, and multiple support parts 16 extend from the first air inlet 14 to the edge of the aeration chamber 13. The multiple support parts 16 divide the aeration chamber 13 into multiple flow channels 17, and the multiple flow channels 17 are connected to the first air inlet 14.

[0036] Specifically, dividing the aeration chamber 13 into multiple flow channels 17 can guide the airflow to be evenly distributed throughout the aeration chamber 13, avoiding the airflow from concentrating in a certain area, thereby improving aeration efficiency and uniformity.

[0037] Optionally, the support portion 16 is arc-shaped.

[0038] Specifically, the support part 16 is designed in an arc shape, which can increase the length and surface area of ​​the flow channel 17, while increasing the gas flow rate and improving the aeration effect.

[0039] Optionally, the support portion 16 is provided with a plurality of air guide grooves 18.

[0040] Specifically, the air guide groove 18 can further expand the area of ​​the flow channel 17, and at the same time, it can decompose the large-scale turbulent gas that swirls into the flow channel 17 into multiple vortices. The gas flow velocity is higher than that of traditional aerators, which increases the ventilation per unit time.

[0041] Optionally, such as Figure 2 and 3 As shown, the rubber diaphragm 12 has a central region 19, a transition region 20 and an edge region 21. The central region 19, the transition region 20 and the edge region 21 are all annular. The transition region 20 is located on the inner periphery of the edge region 21 and the central region 19 is located on the inner periphery of the transition region 20.

[0042] The S-shaped aeration micropores 15 set in the central area 19 are central aeration micropores 15a, the S-shaped aeration micropores 15 set in the transition area 20 are transition aeration micropores 15b, and the S-shaped aeration micropores 15 set in the edge area 21 are edge aeration micropores 15c.

[0043] The length of the central aeration hole 15a is greater than that of the transition aeration hole 15b, and the length of the transition aeration hole 15b is greater than that of the edge aeration hole 15c.

[0044] Specifically, the width of the flow channel 17 increases from the center of the aeration chamber 13 towards its edge. The gas pressure and flow rate within the flow channel 17 decrease progressively. The length variations of the S-shaped aeration micropores 15 in the central region 19, transition region 20, and edge region 21 are adapted to these gas pressure and flow rate variations. The transition aeration holes 15b are longer, have smaller amplitudes, and are sparsely distributed, preventing bubble coalescence. The edge aeration holes 15c are shorter and have larger amplitudes, compensating for the diffusion loss in the edge region 21 due to greater water flow disturbance and shorter bubble residence time compared to the central region 19. The dense micro-slits generate more bubbles to compensate for insufficient oxygen mass transfer, resulting in better aeration uniformity. Gas can be evenly distributed across the entire area of ​​the rubber diaphragm 12, solving the problem of large central aeration and small edge aeration caused by direct air intake in traditional aerators. This eliminates dead zones in edge aeration and effectively improves oxygen utilization.

[0045] Optionally, such as Figure 1 As shown, the disc-type rubber membrane microporous aerator also includes a flow guiding component 25, a flow guiding cavity 26 is formed inside the flow guiding component 25, the air outlet of the flow guiding component 25 is connected to the first air inlet 14, the other end of the flow guiding component 25 is provided with a second air inlet 28, and a spiral flow guiding plate 27 is provided inside the flow guiding cavity 26.

[0046] Specifically, the flow guiding component 25 is provided with a spiral-shaped flow guiding plate 27, and the flow guiding cavity 26 is spiral-shaped. The gas in the flow guiding cavity 26 moves forward along the spiral angle, forming a spiral acceleration, converting tangential momentum into rotational kinetic energy. The rotating airflow generates centrifugal acceleration, and the centrifugal force forces the gas to diffuse outward, improving the aeration effect.

[0047] Optionally, the upper surface of the rubber diaphragm 12 is provided with a nano zinc oxide composite layer.

[0048] Specifically, the nano zinc oxide composite layer can resist ultraviolet rays, form a composite anti-aging layer, and delay the hardening and cracking of rubber.

[0049] Optionally, such as Figure 1 and 6 As shown, the edge of the rubber diaphragm 12 is bent downward to form a connecting part 22. The inner circumference of the connecting part 22 is connected to the outer circumference of the chassis 11 and is provided with a sealing ring 23.

[0050] Optionally, a clamp 24 is provided on the outer periphery of the connecting part 22.

[0051] Specifically, a multi-stage stepped seal is used between the rubber diaphragm 12 and the chassis 11, consisting of three levels of sealing. The first level is an axial mechanical seal, with the connecting part 22 of the rubber diaphragm 12 covering the outer periphery of the chassis 11. The second level is an elastic seal using a sealing ring 23, and the third level is a radial locking seal using a clamp 24, which generates radial force to enhance the sealing effect. This multi-layered sealing prevents the intrusion of mud and sand, avoiding localized overload rupture caused by micro-clogged gaps. The clamp 24 also allows for quick assembly and disassembly of the rubber diaphragm 12, improving diaphragm maintenance efficiency.

[0052] The working principle of the disc-type rubber membrane microporous aerator in this embodiment is as follows:

[0053] After compressed air enters the spiral air guide chamber through the second air inlet 28, the airflow is evenly diffused to the flow channel 17 formed by the arc-shaped support part 16. The EPDM rubber diaphragm 12 expands under air pressure, causing the S-shaped aeration micropores 15 to open and generate microbubbles for aeration.

[0054] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A disc-type rubber membrane microporous aerator, characterized in that, The aeration component (1) includes a chassis (11) and a rubber diaphragm (12) that are sealed together. An aeration chamber (13) is formed between the chassis (11) and the rubber diaphragm (12). The aeration chamber (13) is provided with a first air inlet (14). The rubber diaphragm (12) is provided with a plurality of S-shaped aeration micropores (15).

2. The disc-type rubber membrane microporous aerator according to claim 1, characterized in that, The aeration chamber (13) is provided with multiple support parts (16). The lower surface of the support part (16) is fixedly connected to the chassis (11), and the upper surface of the support part (16) is in contact with the lower surface of the rubber diaphragm (12).

3. The disc-type rubber membrane microporous aerator according to claim 2, characterized in that, The first air inlet (14) is located in the middle of the chassis (11). The support part (16) is elongated. Multiple support parts (16) extend from the first air inlet (14) to the edge of the aeration chamber (13). Multiple support parts (16) divide the aeration chamber (13) into multiple flow channels (17). Multiple flow channels (17) are connected to the first air inlet (14).

4. The disc-type rubber membrane microporous aerator according to claim 3, characterized in that, The support part (16) is arc-shaped.

5. The disc-type rubber membrane microporous aerator according to claim 3, characterized in that, The support part (16) is provided with multiple air guide grooves (18).

6. The disc-type rubber membrane microporous aerator according to claim 3, characterized in that, The rubber diaphragm (12) has a central region (19), a transition region (20) and an edge region (21). The central region (19), the transition region (20) and the edge region (21) are all annular. The transition region (20) is located on the inner periphery of the edge region (21), and the central region (19) is located on the inner periphery of the transition region (20). The S-shaped aeration micropores (15) set in the central area (19) are central aeration holes (15a), the S-shaped aeration micropores (15) set in the transition area (20) are transition aeration holes (15b), and the S-shaped aeration micropores (15) set in the edge area (21) are edge aeration holes (15c). The length of the central aeration hole (15a) is greater than that of the transition aeration hole (15b), and the length of the transition aeration hole (15b) is greater than that of the edge aeration hole (15c).

7. The disc-type rubber membrane microporous aerator according to claim 1, characterized in that, It also includes a flow guide component (25), which has a flow guide cavity (26) inside. The air outlet of the flow guide component (25) is connected to the first air inlet (14). The other end of the flow guide component (25) is provided with a second air inlet (28). The flow guide cavity (26) is provided with a spiral flow guide plate (27).

8. The disc-type rubber membrane microporous aerator according to claim 1, characterized in that, The upper surface of the rubber diaphragm (12) is provided with a nano zinc oxide composite layer.

9. The disc-type rubber membrane microporous aerator according to claim 1, characterized in that, The edge of the rubber diaphragm (12) is bent downward to form a connecting part (22), and the inner circumference of the connecting part (22) is connected to the outer circumference of the chassis (11) and is provided with a sealing ring (23).

10. The disc-type rubber membrane microporous aerator according to claim 9, characterized in that, The outer periphery of the connecting part (22) is provided with a clamp (24).

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