CN215559260U

CN215559260U - Novel tubular microporous aerator

Info

Publication number: CN215559260U
Application number: CN202121916754.3U
Authority: CN
Inventors: 岳荣; 汪家全; 苗春霖
Original assignee: Chongqing Banzhu Technology Co ltd
Current assignee: Chongqing Banzhu Technology Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-01-18
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a novel tubular microporous aerator which comprises a gas pipe and an aeration head, wherein the aeration head is connected to the gas pipe and comprises a gasket, an aeration membrane and a connecting pipe, the aeration membrane is arranged at one pipe orifice of the connecting pipe, and the gasket is arranged between the aeration membrane and the connecting pipe; in a non-aeration state, the gasket blocks the aeration holes on the aeration membrane; in the aeration state, a gap for air flow to pass through is arranged between the gasket and the aeration film. The tubular microporous aerator has the advantages that the aeration membrane is not easy to lose efficacy in oxygenation and non-return functions, and the like.

Description

Novel tubular microporous aerator

Technical Field

The utility model relates to aeration equipment, in particular to a novel tubular microporous aerator.

Background

In the sewage treatment process, certain method and equipment are used to forcibly add air into the sewage to make the sewage in the tank contact with the air to oxygenate, and stir the liquid, so as to accelerate the transfer of oxygen in the air into the liquid, prevent the suspension in the tank from sinking, enhance the contact of organic matters in the tank with microorganisms and dissolved oxygen, and perform oxidative decomposition on the organic matters in the sewage, and the equipment for forcibly increasing the oxygen into the sewage is called as aeration equipment.

At present, membrane type microporous aerators are mainly adopted, which mainly comprise a tubular type and a disc type, and comprise a supporting plate (or a tube) and an aeration membrane, wherein the aeration membrane is sleeved outside the supporting plate and is fixed in a screwing or stainless steel clamping hoop mode, and then the aerator is connected with an air supply pipeline, the aeration membrane is the most core part of the membrane type aerator and is usually an EPDM (ethylene propylene diene monomer) membrane. The aeration holes are round holes and strip holes, the more the aeration film is perforated, the smaller the pore diameter is, the more the bubbles are, and the higher the oxygenation efficiency is. The membrane type microporous aerator has a non-return function, prevents sewage from flowing back into the aeration pipe when aeration is stopped, and is mainly realized by the elastic physical property of an aeration membrane material, the aeration membrane generates tensile deformation under the pressure of gas, and aeration holes are opened; when the aeration is stopped, the aeration membrane shrinks and the aeration hole is closed.

Aeration and non-return are realized by virtue of aeration holes in the aeration membrane, the size of the aeration holes depends on the performance of the aeration membrane material, and under the condition that the aeration quantity is not changed, the smaller the hole is, the higher the oxygenation efficiency is, but the resistance of the aeration hole is increased, the energy consumption is increased, the aeration hole is easy to tear, and the service life of the aeration membrane is shortened; the aeration hole is too big, causes the non return function to become invalid again easily, and it reduces to oxygenate efficiency, especially slit aeration hole, because the lower reason of the tear strength of the stress concentration sum rubber of material (only 20~30% of tensile strength), for the round hole, change the tear destruction, cause aeration membrane oxygenation and non return function to become invalid on the aerator.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel tubular microporous aerator to solve the problem that an aeration membrane on the aerator is prone to losing oxygen charging and non-return functions.

In order to achieve the aim, the utility model provides a novel tubular microporous aerator, which comprises a gas transmission pipe and is characterized in that: the aeration head is connected to the gas pipe and comprises a gasket, an aeration membrane and a connecting pipe, wherein the aeration membrane is arranged at one pipe orifice of the connecting pipe, and the gasket is arranged between the aeration membrane and the connecting pipe; in a non-aeration state, the gasket blocks the aeration holes on the aeration membrane; in the aeration state, a gap for air flow to pass through is arranged between the gasket and the aeration film.

In order to improve the sealing performance of the connecting pipe and facilitate installation and disassembly, sealing nuts are sleeved outside the aeration membrane and the gasket and connected with the threads of the connecting pipe through screw joints.

Further, a sealing washer is arranged between the gasket and the connecting pipe. Preferably, the gasket and the sealing washer are of an integrally formed structure.

In order to ensure better stirring effect of aeration on water, the aeration heads are arranged on the gas transmission pipes at equal intervals along the peripheral surfaces of the gas transmission pipes.

In order to enhance the non-return effect, the middle part of the aeration film is provided with a bulge, and the side wall of the bulge is tightly attached to the side wall of the gasket in the non-aeration state.

The number of the aeration holes is multiple, the aperture is usually 1-1.5 mm, and the aeration holes are located between the protrusions and the outer edge of the aeration membrane.

More preferably, the aeration head is axially arranged on the gas transmission pipe.

Has the advantages that: according to the tubular microporous aerator provided by the utility model, the aeration head adopts a non-return piston type structure, so that the aeration and non-return functions of the aeration head are separated, the structure is simple, convenient and reliable, and the blockage is easy to clean; different from the existing tubular microporous aerator, the tubular microporous aerator provided by the utility model has the advantages that local aeration holes are invalid, the failure of the whole aerator is avoided, the running reliability of equipment is greatly ensured, and the maintenance cost of the aerator is reduced; different from the existing tubular microporous aerator, the utility model weakens the material requirement of the aeration membrane and reduces the production cost compared with an EPDM membrane (ethylene propylene diene monomer).

Drawings

FIG. 1 is a schematic diagram of the structure of a novel tubular microporous aerator in example 1;

FIG. 2 is a schematic structural diagram of an aeration head during aeration;

fig. 3 is a schematic structural diagram of the non-return of the aeration head.

Reference numerals: 1. an aeration head; 2. a gas delivery pipe; 3. a wire joint; 4. a connecting pipe; 5. a seal nut; 6. an aeration film; 7. a gasket; 8. a sealing gasket; 9. an aeration hole; 10. a protrusion; the direction indicated by the arrow in fig. 2 indicates the flow direction of the air flow in the aeration state.

Detailed Description

The following detailed description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions within the basic spirit of the embodiments will still fall within the scope of the present invention as claimed in the claims.

Example 1

As shown in fig. 1 and 3, a novel tubular microporous aerator comprises a gas pipe 2 and an aeration head 1, wherein a thread portion 3 is arranged at the end of the gas pipe 2, a plurality of aeration heads 1 are connected or welded on the gas pipe 2 in a threaded manner according to the length of the gas pipe 2 and the actual oxygenation requirement, the aeration heads 1 are arranged at equal intervals, each aeration head 1 comprises a gasket 7, an aeration membrane 6 and a connecting pipe 4, the aeration membrane 6 is arranged at one pipe opening of the connecting pipe 4, the gasket 7 is arranged between the aeration membrane 6 and the connecting pipe 4, the gasket 7 blocks aeration holes on the aeration membrane 6, and the gasket 7 blocks aeration holes 9 on the aeration membrane 6 in a non-aeration state; in the aeration state, a gap for air flow to pass through is formed between the gasket 7 and the aeration membrane 6.

The outer sleeves of the aeration membrane 6 and the gasket 7 are provided with a sealing nut 5, the sealing nut 5 is connected with the connecting pipe 4 through the wire joint 3, a sealing washer 8 is arranged between the gasket 7 and the connecting pipe 4, and the sealing performance of the connecting pipe 4 is improved, so that the installation and the disassembly are convenient.

Wherein, aeration membrane 6 middle part is equipped with arch 10, and gasket 7 is the hollow ring, and under non-aeration state, this arch 10 lateral wall laminating gasket 7 inside wall strengthens the non return effect. The number of the aeration holes 9 is multiple, and the aeration holes 9 are positioned between the bulges 10 and the outer edge of the aeration membrane 6. The aeration heads 1 are axially and uniformly arranged on the gas transmission pipe 2.

During the use, install seal ring 8, gasket 7 and aeration membrane 6 in proper order and connect 4 mouths of tubes again, then screw gland nut 5, accomplish aeration head 1's equipment, according to actual need, threaded connection or a plurality of aeration heads 1 of welding on gas-supply pipe 2, aeration membrane 6 and seal ring 8 all adopt rubber to make.

Aeration state: the gas is applied to the aeration membrane 6 from the gas pipe 2 through the connecting pipe 4, the aeration membrane 6 generates tensile deformation under the gas pressure, the aeration membrane 6 expands outwards, the aeration hole is not attached to the sealing washer 8 at the moment, a gas channel is formed between the aeration membrane 6 and the gasket 7, the aeration function is realized, and the gas flow in the aeration state is shown as an arrow in figure 2.

A check state: when the aeration stops, the external water pressure or air pressure of the connecting pipe 4 applies an inward pressure to the aeration membrane 6, the aeration membrane 6 contracts, the aeration membrane 6 is tightly attached to the gasket 7, an air channel is formed between the aeration membrane 6 and the gasket 7 and is closed, the aeration hole is sealed by the gasket 7, and the aeration hole is not ventilated, so that the non-return function is realized.

The more the aeration membrane 6 is perforated, the smaller the pore diameter is, the more the formed bubbles are, the higher the oxygenation efficiency is, the larger the pore diameter of the aeration pore is, the energy consumption is reduced, and the non-return effect is not influenced, so that the function of the aeration head is realized without depending on the membrane material performance, and simultaneously, the non-return and aeration effects are still realized.

Example 2

A novel tubular microporous aerator, referring to example 1, mainly differs from example 1 in that: the gasket 7 and the sealing washer 8 are of an integrally formed structure.

Claims

1. The utility model provides a novel tubular micropore aerator, includes gas-supply pipe (2), its characterized in that: the aeration device is characterized by further comprising an aeration head (1), wherein the aeration head (1) is connected to the gas conveying pipe (2), the aeration head (1) comprises a gasket (7), an aeration membrane (6) and a connecting pipe (4), the aeration membrane (6) is arranged at one pipe orifice of the connecting pipe (4), and the gasket (7) is arranged between the aeration membrane (6) and the connecting pipe (4); in a non-aeration state, the gasket (7) blocks the aeration hole (9) on the aeration membrane (6); in an aeration state, a gap for air flow to pass through is formed between the gasket (7) and the aeration membrane (6).

2. The novel tubular microporous aerator of claim 1, wherein: and the aeration membrane (6) and the gasket (7) are sleeved with a sealing nut (5), and the sealing nut (5) is connected with the connecting pipe (4) through threads.

3. The novel tubular microporous aerator of claim 1 or 2, wherein: and a sealing gasket (8) is arranged between the gasket (7) and the connecting pipe (4).

4. The novel tubular microporous aerator of claim 3, wherein: the gasket (7) and the sealing washer (8) are of an integrally formed structure.

5. The novel tubular microporous aerator of claim 4, wherein: the air delivery pipe (2) is connected with at least one aeration head (1) which is arranged on the air delivery pipe (2) at equal intervals.

6. The novel tubular micro-porous aerator of claim 1, 2, 4 or 5, wherein: the middle part of the aeration membrane (6) is provided with a bulge (10), and the side wall of the bulge (10) is attached to the side wall of the gasket (7) in a non-aeration state.

7. The novel tubular microporous aerator of claim 6, wherein: the number of the aeration holes (9) is multiple, and the aeration holes (9) are positioned between the bulges (10) and the outer edge of the aeration film (6).

8. The novel tubular microporous aerator of claim 7, wherein: the aeration head (1) is axially arranged on the gas transmission pipe (2).