CN219929827U - Diaphragm micropore aeration disc - Google Patents
Diaphragm micropore aeration disc Download PDFInfo
- Publication number
- CN219929827U CN219929827U CN202321348477.XU CN202321348477U CN219929827U CN 219929827 U CN219929827 U CN 219929827U CN 202321348477 U CN202321348477 U CN 202321348477U CN 219929827 U CN219929827 U CN 219929827U
- Authority
- CN
- China
- Prior art keywords
- aeration
- membrane
- chassis
- base layer
- fixing seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005273 aeration Methods 0.000 title claims abstract description 121
- 239000012528 membrane Substances 0.000 claims abstract description 73
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 31
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000003618 dip coating Methods 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000000748 compression moulding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 238000005276 aerator Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a membrane microporous aeration disc which has a simple structure and a long service life and can prevent an aeration membrane from being blocked and attached with a scale body after being used for a long time, and the membrane microporous aeration disc comprises an aeration disc body, wherein the aeration disc comprises an aeration membrane, a fixing seat and an aeration chassis capable of allowing air to enter, the aeration membrane is arranged on the fixing seat, a sealing element is arranged between the aeration membrane and the fixing seat, the fixing seat is arranged on the aeration chassis, and a gap is reserved between the aeration chassis and the aeration membrane, and the membrane microporous aeration disc is characterized in that: the aeration membrane comprises an EPDM base layer, a plurality of aeration holes are formed in the EPDM base layer, and a PTFE membrane layer is arranged on the EPDM base layer through a special nano-dispersion hot-dip coating process.
Description
Technical Field
The utility model relates to the technical field of aeration discs, in particular to a membrane microporous aeration disc.
Background
Aeration is a means of bringing air into strong contact with water, and is aimed at dissolving oxygen in the air into the water or at releasing unwanted gases and volatile substances in the water into the air. In other words, it is a means of facilitating the exchange of substances between a gas and a liquid. It also has other important roles such as mixing and stirring. Oxygen in air is transferred into water through aeration, and oxygen is transferred from gas phase to liquid phase through mass transfer, and the theory of mass transfer diffusion is currently applied to the double-film theory proposed by Lewis and Hui Teman. The membrane microporous aerator is an aeration device developed in the 80 s, and the device has small aeration bubble diameter, small gas-liquid interface diameter, large gas-liquid interface area, uniform bubble diffusion and strong corrosion resistance, and reduces the energy consumption by 40 percent or increases the sewage treatment capacity by 40 percent compared with the conventional product fixed screw aerator, the diffusion aerator and the perforated pipe aerator.
Through years of application, the problems of blockage, scaling and the like of the aerator in the later operation cause the ventilation to be reduced, and the piezoresistance is directly exploded after being gradually increased to be the main factor of the damage of the aerator. In order to solve the problem, manufacturers and industry professionals have conducted many years of research, along with the popularization of polytetrafluoroethylene materials, canadian CPS company first develops an aeration membrane made of laminated PTFE composite EPDM material, and then gradually applies the aeration membrane in North America and gradually enters the Chinese market, but the operation problems of large peeling pores of PTFE and the like caused by high manufacturing cost and the difference of elastic modulus of the two materials after lamination are mainly solved as follows:
1. PTFE has cold molding type deformation characteristic, so the aeration membrane of the composite EPDM material of the pressed film type PTFE is easy to separate from the EPDM due to expansion with heat and contraction with cold when in use, so the aeration membrane is damaged, and the service life of the rupture disk is reduced.
2. The aeration membrane made of the pressed film type PTFE composite EPDM material has the conditions of bonding blockage and scale adhesion after the membrane surface and the aeration holes are used for a long time.
The present utility model has been made to solve the above-mentioned problems.
Disclosure of Invention
Therefore, the utility model provides the membrane microporous aeration disc which has simple structure and long service life and can prevent the aeration membrane from being blocked and attached with the scale after long use.
In order to solve the technical problems, the membrane microporous aeration disc comprises an aeration disc body, wherein the aeration disc comprises an aeration membrane, a fixing seat and an aeration chassis capable of allowing air to enter, the aeration membrane is arranged on the fixing seat, a sealing piece is arranged between the aeration membrane and the fixing seat, the fixing seat is arranged on the aeration chassis, and a gap is reserved between the aeration chassis and the aeration membrane, and the membrane microporous aeration disc is characterized in that: the aeration membrane comprises an EPDM base layer, a plurality of aeration holes are formed in the EPDM base layer, and a PTFE membrane layer is arranged on the EPDM base layer through a special nano-dispersion hot-dip coating process.
The further improvement is that: the thickness of the PTFE film layer is as follows: 250 μm.
The further improvement is that: at least 3500 aeration holes are formed, and the diameter of each aeration hole is as follows: 0.8-1mm, wherein the central area of the aeration membrane is arranged without holes.
The further improvement is that: the EPDM base layer is: ethylene propylene diene monomer produced by adopting a compression molding process.
The further improvement is that: the thickness of the aeration membrane is 2mm.
The further improvement is that: the aeration chassis is provided with a connecting pipe communicated with the internal gap of the aeration chassis, and the connecting pipe is provided with a mounting device for mounting the aeration chassis on a pipeline.
The further improvement is that: the mounting device comprises a main saddle and an auxiliary saddle matched with the main saddle, wherein the main saddle is arranged on the connecting pipe, the main saddle is arc-shaped, the edge of the main saddle is fixedly provided with an outer convex edge which extends outwards, and the inner edge of the auxiliary saddle is provided with an inner convex edge matched with the outer convex edge.
The further improvement is that: the connecting pipe is connected with the main saddle through threads.
By adopting the technical scheme, the utility model has the beneficial effects that:
simple structure, long service life, and can prevent the aeration membrane from being blocked and attached with scale for a long time. The thin PTFE film layer is coated on the EPDM base layer through a special nano-dispersion hot-dip coating process, so that the PTFE film layer and the EPDM substrate are combined at a molecular level on a combining surface, and the aeration head compounded by two substances has the elastic characteristic of rubber and the surface characteristic of PTFE. And the special nano-dispersion hot-dip coating process is adopted to coat the surfaces of the EPDM base layer and the aeration holes with PTFE film layers, so that the surfaces of the EPDM base layer and the aeration holes are smooth, dirt can not be adhered and blocked, and dirt can not be adhered forever. The aeration membrane is integrally dispersed with hot-dip PTFE, so that the aeration membrane can be well resistant to blockage, has good hydrophobicity, and the hydrophobicity reaches at least 70%, thereby being well resistant to scaling. And the surface of the aeration membrane after hot dip coating is smooth, so that the surface coefficient of the aeration membrane is the lowest of various materials, even if hardened sludge, calcium scale and the like are formed, the membrane cannot be adhered to the surface of the membrane, and the principle is similar to that of a non-stick pan, thereby preventing the phenomenon of adhesion and blockage after long use.
Drawings
FIG. 1 is a schematic diagram of a membrane microporous aeration disc structure according to an embodiment of the utility model.
FIG. 2 is a schematic diagram of an aeration membrane according to an embodiment of the present utility model.
Fig. 3 is a schematic view of the structure of the auxiliary saddle according to the embodiment of the present utility model.
Detailed Description
The utility model will now be further described with reference to the drawings and specific examples.
Referring to figures 1-3, the embodiment of the utility model discloses a membrane microporous aeration disc, which comprises an aeration disc body, wherein the aeration disc comprises an aeration membrane 1, a fixed seat 2 and an aeration chassis 3 which can allow air to enter, the aeration membrane 1 is arranged on the fixed seat 2, a sealing gasket 7 is arranged on the aeration membrane 1, the fixed seat 2 is arranged on the aeration chassis 3, a gap is reserved between the aeration chassis 3 and the aeration membrane 1, the aeration membrane 1 comprises an EPDM (ethylene-propylene-diene monomer) base layer, a plurality of aeration holes are formed in the EPDM base layer, and a PTFE (polytetrafluoroethylene) membrane layer is arranged on the EPDM base layer through a special nano-dispersion hot-dip plating process.
Preferably, the thickness of the PTFE film layer is: 250 μm.
Preferably, the EPDM base layer is: ethylene propylene diene monomer produced by adopting a compression molding process.
The EPDM base layer is coated with a thin PTFE film layer through a special nano-dispersion hot-dip coating process, so that the PTFE film layer and the EPDM substrate are combined at a molecular level on a combining surface, and the aeration head compounded by two substances has the elastic characteristic of rubber and the surface characteristic of PTFE. And the special nano-dispersion hot-dip coating process is adopted to coat the surfaces of the EPDM base layer and the aeration holes with PTFE film layers, so that the surfaces of the EPDM base layer and the aeration holes are smooth, dirt can not be adhered and blocked, and dirt can not be adhered forever. The aeration membrane 1 is integrally dispersed with hot-dip PTFE, so that the aeration membrane 1 can be well resistant to blockage, has good hydrophobicity, and the hydrophobicity reaches at least 70%, thereby being well resistant to scaling. And the surface of the aeration membrane 1 after hot dip plating is smooth, so that the surface coefficient of the aeration membrane is the lowest of various materials, even if hardened sludge, calcium scale and the like are formed, the aeration membrane cannot be adhered to the surface of the membrane, and the principle is similar to that of a non-stick pan.
In order to perform better aeration, at least 3500 aeration holes are provided, and the diameter of the aeration holes is as follows: 0.8-1mm, and the central area of the aeration membrane 1 is arranged without holes.
In order to improve the elongation at break and prolong the service life of the aeration membrane 1, the thickness of the aeration membrane 1 is 2mm.
In order to facilitate the installation of the aeration membrane and improve the tightness, the aeration membrane further comprises a fixed ring sheet 6, wherein the fixed ring sheet is locked on the fixed seat 2 through bolts to press the sealing washer 7 and the aeration membrane 1.
For the installation of convenient aeration dish, be equipped with on the aeration chassis 3 with aeration dish inside clearance be linked together connecting pipe 4, be equipped with on the connecting pipe 4 with aeration dish install on the pipeline main saddle 5 and with main saddle 5 complex vice saddle 8, main saddle 5 threaded connection locates on the connecting pipe 4, be arc form on the main saddle 5, the fixed outward protruding edge that is provided with in edge of main saddle 5, the internal edge on vice saddle 8 is provided with the interior protruding edge of evagination edge complex.
While the basic principles and main features of the present utility model and advantages thereof have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described merely by way of illustration of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a diaphragm micropore aeration dish, includes aeration dish body, its characterized in that: the aeration disc comprises an aeration membrane, a fixing seat and an aeration chassis capable of allowing air to enter, wherein the aeration membrane is arranged on the fixing seat, a sealing piece is arranged between the aeration membrane and the fixing seat, the fixing seat is arranged on the aeration chassis, and a gap is reserved between the aeration chassis and the aeration membrane, and the aeration disc is characterized in that: the aeration membrane comprises an EPDM base layer, a plurality of aeration holes are formed in the EPDM base layer, and a PTFE membrane layer is arranged on the EPDM base layer through a special nano-dispersion hot-dip coating process.
2. A membrane microporous aeration disc according to claim 1, wherein: the thickness of the PTFE film layer is as follows: 250 μm.
3. A membrane microporous aeration disc according to claim 1, wherein: at least 3500 aeration holes are formed, and the diameter of each aeration hole is as follows: 0.8-1mm, wherein the central area of the aeration membrane is arranged without holes.
4. A membrane microporous aeration disc according to claim 1, wherein: the EPDM base layer is: ethylene propylene diene monomer produced by adopting a compression molding process.
5. A membrane microporous aeration disc according to claim 1, wherein: the thickness of the aeration membrane is 2mm.
6. A membrane microporous aeration disc according to claim 1, wherein: the aeration chassis is provided with a connecting pipe communicated with the internal gap of the aeration chassis, and the connecting pipe is provided with a mounting device for mounting the aeration chassis on a pipeline.
7. A membrane microporous aeration disc according to claim 6, wherein: the mounting device comprises a main saddle and an auxiliary saddle matched with the main saddle, wherein the main saddle is arranged on the connecting pipe, the main saddle is arc-shaped, the edge of the main saddle is fixedly provided with an outer convex edge which extends outwards, and the inner edge of the auxiliary saddle is provided with an inner convex edge matched with the outer convex edge.
8. A membrane microporous aeration disc according to claim 7, wherein: the connecting pipe is connected with the main saddle through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348477.XU CN219929827U (en) | 2023-05-31 | 2023-05-31 | Diaphragm micropore aeration disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348477.XU CN219929827U (en) | 2023-05-31 | 2023-05-31 | Diaphragm micropore aeration disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219929827U true CN219929827U (en) | 2023-10-31 |
Family
ID=88502928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321348477.XU Active CN219929827U (en) | 2023-05-31 | 2023-05-31 | Diaphragm micropore aeration disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219929827U (en) |
-
2023
- 2023-05-31 CN CN202321348477.XU patent/CN219929827U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |