CN110898569A - Antibacterial breathable breathing device - Google Patents
Antibacterial breathable breathing device Download PDFInfo
- Publication number
- CN110898569A CN110898569A CN201911051193.2A CN201911051193A CN110898569A CN 110898569 A CN110898569 A CN 110898569A CN 201911051193 A CN201911051193 A CN 201911051193A CN 110898569 A CN110898569 A CN 110898569A
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- breathing
- cap
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- tube
- horizontal
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 119
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000002121 nanofiber Substances 0.000 claims abstract description 37
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 27
- 230000003385 bacteriostatic effect Effects 0.000 claims description 20
- 230000000241 respiratory effect Effects 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000035699 permeability Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 238000001523 electrospinning Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 241000272201 Columbiformes Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 241000287127 Passeridae Species 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/546—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using nano- or microfibres
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an antibacterial breathable breathing device, which comprises a breathing pipe (1), wherein one end of the breathing pipe (1) is communicated with a water tank or a water pool, the other end of the breathing pipe is connected with a breathing cap (3), one or more electrostatic spinning functional nanofiber membranes are fixed in the breathing cap (3) to form a horizontal or/and gradient-shaped breathing hole of the breathing cap (3).
Description
Technical Field
The invention relates to a breathing device, in particular to a bacteriostatic breathable breathing device of a secondary water supply pool (tank).
Background
The secondary water supply facilities refer to facilities such as low, medium and high water reservoirs, water storage tanks, auxiliary pipelines, valves, water pump units, air pressure tanks and the like which are arranged for guaranteeing the domestic drinking water of residents. Most of the existing secondary water supply facilities adopt a high-level water tank (tank) which is a flat-bottom water tank, the water storage capacity is large, most of the existing secondary water supply facilities are closed, only two water conveying pipes for water inlet and water outlet are provided, and the air exchange (ventilation) between the water tank (tank) and the outside is realized only through a breathing cap. The good air permeability of the secondary water supply pool (tank) is the key for ensuring the safety and health of the quality of drinking water.
However, the tap water is easily polluted to a certain degree due to improper management of the secondary water supply pool (tank) or untight sealing of the breathing cap, for example, the secondary water supply pool (tank) has poor sealing performance or no cover, dust, insects and the like are easily caused to enter the pool (tank), so that algae, microorganisms, viruses and bacteria are bred, a water outlet pipe of the secondary water supply pool (tank) is more than ten centimeters away from the bottom of the tank, and a part of nonflowable fire water is stored at the bottom of the tank, so that favorable conditions are created for the growth of the microorganisms, and the drinking water safety is damaged. In addition, some living things, such as sparrows and pigeons, fall into the secondary water supply pool (tank) to be drowned, which also causes water pollution. The secondary water supply pool (tank) is not sealed tightly, which brings great damage to water quality, seriously affects the normal water quality of residents and causes great harm to the bodies of the residents. The problem of the last kilometer of tap water supply is solved, so that citizens can enjoy high-quality and safe tap water, and the problem of sealing a secondary water supply pool (tank) needs to be solved.
In order to solve the sealing problem of the secondary water supply pool (tank), the selection of high-efficiency gas filtering materials and the development of a novel secondary water supply pool (tank) breathing (ventilating) device are very important. At present, the conventional breathing (ventilating) device of the secondary water supply pool (tank) is simple in structure, generally has the shapes of a chimney, a mushroom cap and the like, adopts a 304 stainless steel mesh with the size less than 30 meshes inside to prevent dust, insects, organisms and the like from entering the secondary water supply pool (tank), and is poor in sealing performance and gas filtering effect. The core filter media in the existing high efficiency air filtration (HEPA) and ultra high efficiency air filtration (ULPA) are typically ultra-fine glass fiber membranes or melt blown fiber nonwovens, both of which can achieve higher filtration efficiency, but the air resistance can sharply rise along with the increase of dust holding capacity during use, thereby causing the increase of energy consumption. In addition, glass fibers have poor folding resistance, are easily broken during processing and use, and have the possibility of causing cancer while affecting filtration efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an antibacterial breathable breathing device, which ensures that a secondary water supply pool (tank) has good breathability by utilizing the efficient breathability of the nanofiber with the electrostatic spinning function.
Another object of the present invention is to provide a bacteriostatic and breathable breathing apparatus for suppressing the growth of bacteria and other organisms outside and inside a secondary water supply tank (tank) through the breathing apparatus by using the highly efficient bacteriostatic activity of electrospinning functional nanofibers.
In order to achieve the purpose, the invention provides a bacteriostatic breathable breathing device which comprises a breathing tube (1), wherein one end of the breathing tube (1) is communicated with a water tank or a water pool, the other end of the breathing tube is connected with a breathing cap (3), and one or more electrostatic spinning functional nanofiber membranes are fixed inside the breathing cap (3) to form a horizontal or/and gradient-shaped breathing hole of the breathing cap (3).
Preferably, breathing tube (1) includes pipeline main part and inner skleeve (2), pipeline main part is the integrated into one piece structure, and its one end and water tank or pond intercommunication, other pot head are established inner skleeve (2), breathing cap (3) with breathing tube (1) passes through inner skleeve (2) welding forms.
Preferably, the breathing tube (1) is designed to be chimney-shaped or mushroom-shaped according to the water quantity and position of the pool or the water tank.
Preferably, the pipeline body is composed of a horizontal straight pipe (11), a vertical straight pipe (13) and an elbow pipe (12), the elbow pipe (12) is arranged between the horizontal straight pipe (11) and the vertical straight pipe (13), and the inner sleeve (2) is sleeved in the vertical straight pipe (13).
Preferably, the horizontal position in the body of the breathing cap (3) is used for fixing an electrostatic spinning functional nanofiber membrane (4) through a breathing cap accessory so as to form a horizontal breathing hole of the breathing cap.
Preferably, a buckle is arranged on the inner wall of the breathing cap 3 body, and the electrostatic spinning functional nanofiber membrane (4) is fixed at the horizontal position inside the breathing cap (3) body in a buckle connection mode
Preferably, an electrostatic spinning functional nanofiber membrane (5) is obliquely fixed above the horizontal breathing hole through a breathing cap accessory so as to form the slope-shaped breathing hole of the breathing cap (3).
Preferably, a hinge is arranged on the inner wall of the breathing cap (3) body, and the electrostatic spinning functional nanofiber membrane (5) is obliquely fixed in the breathing cap (3) in a mode of quick-connection hinge connection.
Preferably, the whole stainless steel that adopts of breathing cap (3), it includes middle column and rather than integrated into one piece's semicircle part, the level form breathing hole sets up in middle column part, slope form breathing hole sets up in semicircle part.
Preferably, the rest parts of the breathing device except the breathing hole are all hollow structures.
Compared with the prior art, the bacteriostatic breathable breathing device has the advantages that the electrostatic spinning functional nanofiber diaphragms are respectively fixed at different positions inside the breathing cap (3) to respectively form the horizontal or gradient breathing holes of the breathing cap (3), so that the high-efficiency breathability of the electrostatic spinning functional nanofiber is utilized, the secondary water supply pool (tank) is ensured to have good breathability, and meanwhile, the high-efficiency bacteriostatic property of the electrostatic spinning functional nanofiber is utilized to inhibit the growth of fungi and other biological substances passing through the breathing (breathable) device from the outside and the inside of the secondary water supply pool (tank).
Drawings
Fig. 1 is a schematic cross-sectional exploded view of a bacteriostatic breathable breathing device according to the invention.
Detailed Description
Other advantages and capabilities of the present invention will be readily apparent to those skilled in the art from the present disclosure by describing the embodiments of the present invention with specific embodiments thereof in conjunction with the accompanying drawings. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention.
The electrostatic spinning functional nanofiber has attracted wide attention as a novel gas filtering material, the filtering principle of the electrostatic spinning functional nanofiber is complex, and the electrostatic spinning functional nanofiber is generally considered as a result of the combined action of five effects, namely an interception effect, an inertia effect, a diffusion effect, a gravity effect and an electrostatic effect. The electrostatic spinning functional nanofiber has the characteristics of high filtering efficiency, low air resistance, low gram weight and the like, so that the electrostatic spinning functional nanofiber can gradually replace the traditional fiber material to be applied to the aspects of dust filtration, indoor air purification, locomotive air filtration and the like. The invention also applies the electrostatic spinning functional nanofiber material.
Fig. 1 is a schematic cross-sectional exploded view of a bacteriostatic breathable breathing device according to the invention. As shown in fig. 1, the invention provides a bacteriostatic breathable breathing device, comprising: the respiratory tube 1 comprises a tube main body and an inner sleeve 2, wherein the tube main body is a stainless steel tube, the tube main body is an integrally formed structure and can be designed into various shapes such as chimney shape, mushroom shape and the like according to the water quantity and the position of a secondary water supply pool (tank), in the specific embodiment of the invention, the tube main body is a chimney-shaped structure and comprises a horizontal straight tube 11, a vertical straight tube 13 and a section of bent tube 12, wherein the bent tube 12 is arranged between the horizontal straight tube 11 and the vertical straight tube 13, the inner sleeve 2 is sleeved in the straight tube 13, the other end of the horizontal straight tube 11 is used for being communicated with the pool (tank), namely one end of the respiratory tube 1 is communicated with the pool (tank), the other end is connected with a respiratory cap 3, the respiratory cap 3 is welded with the respiratory tube 1 through the inner sleeve 2, the respiratory cap 3 is of a welded integral structure, and the respiratory cap 3 is made of stainless steel material, the horizontal breathing hole of the breathing cap is formed by fixing an electrostatic spinning functional nanofiber membrane 4 at the horizontal position (the middle column part) of the breathing hole in the breathing cap 3, and the horizontal breathing hole of the breathing cap is formed by arranging a buckle on the inner wall of the body of the breathing cap 3, the electrostatic spinning functional nanofiber membrane 4 is fixed at the horizontal position in the breathing cap 3 in a buckle connection mode, and an electrostatic spinning functional nanofiber membrane 5 is obliquely fixed above the horizontal breathing hole (the semicircular part) to form the slope-shaped breathing hole of the breathing cap 3, in the specific embodiment of the invention, a hinge is arranged on the inner wall (namely, the arc inner wall) of the breathing cap 3 body, the electrospinning functional nanofiber membrane 5 is obliquely fixed inside the breathing cap 3 in a hinge connection mode to realize a slope-shaped breathing hole, the horizontal or slope-shaped electrospinning functional nanofiber membrane is easy to fall off under internal pressure (under special conditions such as overflow, the internal pressure exceeds 0.1MPa), the membrane is not easy to fall off under external pressure, and quick replacement can be realized by a quick-connection buckle or a quick-connection hinge when the breathing hole is replaced.
In the invention, the air filtration uses the electrostatic spinning functional nanofiber membrane, the functional nanofiber membrane has high air and water vapor permeability on one hand, wherein the air permeability of the membrane under the pressure difference of 127Pa (13mm water column) is 3571-4894 cm3/(cm2·s)]The membrane has an air permeability of 281180.5-385353.6 [ mu m/(Pa s)]The water vapor transmission rate in 24 hours is 3112-3790 g/m3(ii) a On the other hand, the functional nanofiber membrane has high antibacterial activity, and the antibacterial activity value (staphylococcus aureus and escherichia coli) of the functional nanofiber membrane is greater than 3.
The working principle of the invention is as follows: the breathing device of the invention is arranged on the secondary water supply water tank to replace the position of the traditional breathing cap, when in use, the breathing device is not directly contacted with water, one end of the breathing tube 1 is communicated with the water tank, the breathing device is provided with a breathing hole (a horizontal or gradient breathing hole), the rest parts are hollow structures, air and vapor can freely pass through the breathing device, the horizontal or slope-shaped breathing holes adopt nanofiber membranes with electrostatic spinning function, the functional nanofiber membrane has high-efficiency air and water vapor permeability on one hand and high-efficiency antibacterial activity on the other hand, and actually, the breathing device can realize bidirectional autonomous unpowered ventilation (water vapor and air can permeate, and the permeability of the nanofiber membrane material at the breathing hole can realize the water vapor and air is 99%) only by one of the horizontal or slope-shaped breathing holes.
In summary, in the bacteriostatic breathable breathing device, the electrostatic spinning functional nanofiber membranes are respectively fixed at different positions inside the breathing cap (3) to respectively form horizontal or gradient breathing holes of the breathing cap (3), so that the high-efficiency breathability of the electrostatic spinning functional nanofiber is utilized to ensure that the secondary water supply pool (tank) has good breathability, and the high-efficiency bacteriostatic property of the electrostatic spinning functional nanofiber is utilized to inhibit the growth of fungus-type organisms passing through the breathing (breathable) device from the outside and the inside of the secondary water supply pool (tank).
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the scope of the invention should be determined from the following claims.
Claims (10)
1. The utility model provides a ventilative respiratory device of antibacterial, includes breathing tube (1), breathing cap (3) is connected with water tank or pond intercommunication to breathing tube (1) one end, the other end in breathing cap (3) inside fixed one or more electrostatic spinning function nanofiber diaphragms, in order to constitute the level form or the slope form breathing hole of breathing cap (3).
2. A bacteriostatic breathable breathing device according to claim 1, wherein: respiratory tube (1) includes pipeline main part and inner skleeve (2), pipeline main part is the integrated into one piece structure, and its one end and water tank or pond intercommunication, other pot head are established inner skleeve (2), respiratory cap (3) with respiratory tube (1) passes through inner skleeve (2) welding forms.
3. A bacteriostatic breathable breathing device according to claim 1, wherein: the breathing pipe (1) is designed into a chimney shape or a mushroom shape according to the water quantity and the position of the pool or the water tank.
4. A bacteriostatic breathable breathing device according to claim 3, wherein: the pipeline main part comprises horizontal straight venturi tube (11), perpendicular straight pipe (13) and return bend (12), return bend (12) are in between horizontal straight venturi tube (11) and perpendicular straight pipe (13), inner skleeve (2) cover is located in perpendicular straight venturi tube (13).
5. A bacteriostatic breathable breathing device according to claim 1, wherein: the horizontal position in the body of the breathing cap (3) fixes an electrostatic spinning functional nanofiber membrane (4) through a breathing cap accessory so as to form the horizontal breathing hole of the breathing cap.
6. A bacteriostatic breathable breathing device according to claim 5, wherein: the inner wall of the breathing cap (3) body is provided with a buckle, and the electrostatic spinning functional nanofiber membrane (4) is fixed at the horizontal position inside the breathing cap (3) body in a buckle connection mode.
7. A bacteriostatic breathable breathing device according to claim 1, wherein: and an electrostatic spinning functional nanofiber membrane (5) is obliquely fixed above the horizontal breathing hole through a breathing cap accessory so as to form the slope-shaped breathing hole of the breathing cap (3).
8. A bacteriostatic breathable breathing device according to claim 7, wherein: and a hinge is arranged on the inner wall of the breathing cap 3 body, and the electrostatic spinning functional nanofiber membrane (5) is obliquely fixed in the breathing cap (3) in a mode of quick connection of the hinge.
9. A bacteriostatic breathable breathing device according to claim 1, wherein: the whole stainless steel that adopts of breathing cap (3), it includes middle column and rather than integrated into one piece's semicircle part, the level form respiratory orifice sets up in middle column part, slope form respiratory orifice sets up in semicircle part.
10. A bacteriostatic breathable breathing device according to claim 1, wherein: except the breathing hole, the rest parts of the breathing device are all hollow structures.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911051193.2A CN110898569A (en) | 2019-10-31 | 2019-10-31 | Antibacterial breathable breathing device |
| PCT/CN2020/122402 WO2021082998A1 (en) | 2019-10-31 | 2020-10-21 | Bacteriostatic breathable breathing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911051193.2A CN110898569A (en) | 2019-10-31 | 2019-10-31 | Antibacterial breathable breathing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110898569A true CN110898569A (en) | 2020-03-24 |
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ID=69815094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911051193.2A Pending CN110898569A (en) | 2019-10-31 | 2019-10-31 | Antibacterial breathable breathing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110898569A (en) |
| WO (1) | WO2021082998A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980113A (en) * | 2020-09-22 | 2020-11-24 | 上海城市水资源开发利用国家工程中心有限公司 | Overflow device for water tank |
| WO2021082998A1 (en) * | 2019-10-31 | 2021-05-06 | 上海城市水资源开发利用国家工程中心有限公司 | Bacteriostatic breathable breathing device |
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| US20050092372A1 (en) * | 2003-10-29 | 2005-05-05 | Wade Rodney G. | Flap valve |
| CN108570768A (en) * | 2018-05-14 | 2018-09-25 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of method and apparatus preparing compound antibacterial nano fibrous membrane |
| CN208844667U (en) * | 2018-08-02 | 2019-05-10 | 中国中元国际工程有限公司 | Safety and sanitation water storage device |
| CN210964392U (en) * | 2019-10-31 | 2020-07-10 | 上海城市水资源开发利用国家工程中心有限公司 | Antibacterial breathable breathing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2526354Y (en) * | 2002-01-30 | 2002-12-18 | 孙险平 | Pipeline water supply unit without suction lift |
| CN202070257U (en) * | 2011-04-02 | 2011-12-14 | 青岛沃泰水技术设备制造有限公司 | Air filtering absorber and water tank adopting same |
| CN206554170U (en) * | 2017-01-23 | 2017-10-13 | 杭州西子泵业有限公司 | A kind of hygiene-type water system |
| CN208996131U (en) * | 2018-09-07 | 2019-06-18 | 北京安洁康生物科技有限公司 | The anti-throw-in type respirator of anti-terrorism for water tank |
| CN110898569A (en) * | 2019-10-31 | 2020-03-24 | 上海城市水资源开发利用国家工程中心有限公司 | Antibacterial breathable breathing device |
-
2019
- 2019-10-31 CN CN201911051193.2A patent/CN110898569A/en active Pending
-
2020
- 2020-10-21 WO PCT/CN2020/122402 patent/WO2021082998A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050092372A1 (en) * | 2003-10-29 | 2005-05-05 | Wade Rodney G. | Flap valve |
| CN108570768A (en) * | 2018-05-14 | 2018-09-25 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of method and apparatus preparing compound antibacterial nano fibrous membrane |
| CN208844667U (en) * | 2018-08-02 | 2019-05-10 | 中国中元国际工程有限公司 | Safety and sanitation water storage device |
| CN210964392U (en) * | 2019-10-31 | 2020-07-10 | 上海城市水资源开发利用国家工程中心有限公司 | Antibacterial breathable breathing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082998A1 (en) * | 2019-10-31 | 2021-05-06 | 上海城市水资源开发利用国家工程中心有限公司 | Bacteriostatic breathable breathing device |
| CN111980113A (en) * | 2020-09-22 | 2020-11-24 | 上海城市水资源开发利用国家工程中心有限公司 | Overflow device for water tank |
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| Publication number | Publication date |
|---|---|
| WO2021082998A1 (en) | 2021-05-06 |
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