CN107319654A - Reverse filtration mouth mask and self-cleaning method - Google Patents
Reverse filtration mouth mask and self-cleaning method Download PDFInfo
- Publication number
- CN107319654A CN107319654A CN201710712506.9A CN201710712506A CN107319654A CN 107319654 A CN107319654 A CN 107319654A CN 201710712506 A CN201710712506 A CN 201710712506A CN 107319654 A CN107319654 A CN 107319654A
- Authority
- CN
- China
- Prior art keywords
- mouth mask
- mask matrix
- filter screen
- matrix
- metal filter
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Classifications
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/06—Mouthpieces; Nose-clips
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The present invention relates to a kind of reverse filtration mouth mask and self-cleaning method, including mouth mask matrix, be connected in mouth mask matrix two ends be used for fixation bandage；Mouth mask matrix at least coats the oro-nasal region of user, and annular plasticity nose bar is connected with along the edge of mouth mask matrix cavity geometry；Breather valve is provided with mouth mask matrix；Metal filter screen and some protection filter layers are provided with below mouth mask matrix；Some longitudinal guiding gutters are provided with the inwall of mouth mask matrix cavity, the lower end that groove is flow backwards in longitudinal direction is pooled to drainage trough；Drainage trough is connected with metal filter screen, and junction is provided with hydrophilic polymer membrane.The granule dust that the present invention is filtered easily drops, and moist ponding and will not have self-cleaning function in mouth mask, each building block cleaning or changes convenient, and comfortable wearing, protection effect is good.
Description
Technical field
The invention belongs to respiratory protection equipment, breathing mask technical field, and in particular to a kind of reverse filtration mouth mask and from
The method of cleaning.
Background technology
With the aggravation of environmental pollution, worse and worse, haze weather also occurs air quality often, has a strong impact on people's
It is healthy, and people, to healthy attention degree more and more higher, for the bad situation of current air quality, people adopt
The most direct mode taken is exactly to wear mouth mask.Mouth mask is designed for the health of protection people, can for harmful
See or sightless material filtered, when air quality is bad, respiratory infectious disease it is popular when, the environment of the pollution such as dust
During middle operation, wearing mouth mask has extraordinary action effect.So mouth mask uses frequency in the routine work life of people
Rate more and more higher.
Mouth mask is typically broadly divided into air filtering type mask and Gas feeding mouth mask, and wherein air filtering type mask is for we
A most popular class in routine work work, its operation principle is the media filtration that the air containing nuisance is passed through into mouth mask
Sucked again by human body after purification, but there is also shortcomings for our mouth masks used in everyday：When user wears mouth mask, due to mouth
Cover main body is substantially all to be made up of protection filter layer, is easily made dirty during filtering granule dust, is needed Integral cleaning or can only be disposable
Use；The area of the protection filter layer of mask main body is larger, and manufacturing cost is high；Mouth mask is contacted with user's snout, is easily caused vexed
Heat, humidity, also have mouth mask to be designed as cavity body structure, but inner chamber is gone back due to the easy moist ponding of the condensation of user's exhaled gas
Have and filter layer is set immediately ahead of the oral area of mouth mask cavity, but this kind of structure is unfavorable for dropping for the granule dust of filtering；Mouthful
Flaring reduces protection effect along bad with the gluing, sealing effect of user's face.
The content of the invention
For the above-mentioned deficiency of prior art, the technical problem to be solved in the present invention is to provide a kind of reverse filtration mouth mask and
Self-cleaning method, is difficult to drop with the granule dust for avoiding mouth mask from filtering, easy humidity ponding in mouth mask, mouth mask filtering particle
Dust needs frequent clean or can only be disposable after making dirty the problem of.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
Reverse filtration mouth mask, including mouth mask matrix, be connected in the mouth mask matrix two ends and be used for fixed bandage, the mouth mask base
Body uses airtight material, and the mouth mask matrix is housing shape, the opening portion with cladding face oro-nasal region, the mouth mask base
When body is fitted in face by opening portion and covers mouth and nose, mouth mask matrix inwall and people's face skin formation spaced cavities；
Mouth mask matrix openings portion is connected with annular plasticity nose bar corresponding with opening portion edge shape, for the face with user
Skin is reliably fitted；The middle part of the mouth mask matrix wearing state is provided with breather valve by the top, and the breather valve connection is described
Inside and outside mouth mask matrix, unidirectionally flowed out from breather valve for gas in the mouth mask matrix, the breather valve is provided with opening and closing device
The opening and closing that gas unidirectionally flows out from breather valve in the mouth mask matrix is controlled with correspondence；It is located at wearing state on the mouth mask matrix
Oral area lower horizontal is provided with metal filter screen, and the metal filter screen is connected inside and outside the mouth mask matrix, for the mouth mask
The circulation of gas inside and outside matrix；It is located on the mouth mask matrix on the inside of metal filter screen and is additionally provided with protection filter layer, metal
There is interval between screen pack and protection filter layer；Some longitudinal guiding gutters are provided with the mouth mask matrix inwall, for using
Family exhaled gas is in the water conservancy diversion of the condensed condensed water of mouth mask matrix inwall, and the lower end that groove is flow backwards in the longitudinal direction, which is pooled to, draws
Chute；The drainage trough end is connected by hydrophilic polymer membrane with metal filter screen；The hydrophilic polymer membrane is completely covered
The connectivity part of the drainage trough and metal filter screen；The water penetration of the hydrophilic polymer membrane is better than gas permeability.
Above-mentioned technical proposal is further improved, the metal filter screen detachably couples with the mouth mask matrix.
Further, the profile and the profile of the metal filter screen of the protection filter layer are correspondingly arranged, and pass through profile
Ring washer corresponding with the metal filter screen profile is folded between the metal filter screen and the mouth mask matrix, annular
The thickness of packing ring is the size at the interval between metal filter screen and protection filter layer.
Further, the mouth mask matrix is symmetrical structure along the longitudinal centerline；The main material of the mouth mask matrix
For air-locked polyurethane material；The mouth mask matrix is die cast.
Further, the main material of the plasticity nose bar is hydrogel.
Further, the bandage is detachably connected on the mouth mask matrix outer wall.
Further, the protection filter layer is three layers, is followed successively by from outside to inside for filtering particle diameter more than 10 powder and microns
The dust layer of dirt, the antibiotic layer of moisture absorption sterilization, the filter layer for being more than for filtering particle diameter 2.5 micron dusts, dust layer, antibacterial
Layer, filter layer are sewed on together.
The present invention also relates to a kind of self-cleaning method carried out based on above-mentioned reverse filtration mouth mask, including normal
Wear using the reverse filtration mouth mask, the gas of user's exhalation forms condensed water, condensed water after the condensation of mouth mask matrix inwall
Some longitudinal guiding gutter water conservancy diversion through being set on mouth mask matrix inwall flow downward, and collect and flow through drainage trough, gather through hydrophilic
Compound film, is exported to metal filter screen, by the capillarity of metal filter screen grid, and condensed water cleaning metal filtration is online
Filtrate is simultaneously dripped.
The above method is further improved, is additionally included in the presence of vibration and the respiratory air flow of User Activity generation, makes gold
Condensed water and filtrate on category screen pack drop.
Further, in addition to close breather valve on opening and closing device so that gas can only be from metal filtration in mouth mask matrix
Net outflow, in the presence of user's expiratory airflow, makes condensed water that metal filtration is online and filtrate drop.
Compared with prior art, the present invention has the advantages that：
1st, because metal filter screen is horizontally set on below mouth mask matrix, the vibration that granule dust of filtering etc. is produced in people's walking
With easily voluntarily dropped in the presence of respiratory air flow, effectively keep metal filter screen cleaning；This is also reverse filtration of the present invention
The reason of " reverse " in mouth mask；
2nd, the longitudinal guiding gutter and drainage trough set in mouth mask matrix effectively exports the condensed water of user's exhaled gas to metal
Screen pack, and by the capillarity of metal filter screen grid, condensed water cleans metal filter screen and dripped automatically, further protects
The cleaning of metal filter screen has been held, without frequent clean, moist ponding problem in mouth mask matrix has been it also avoid；Wearing comfort is more
It is good；
3rd, after dismounting metal filter screen, protection filter layer can be taken out, it is convenient to clean or change；Protect the area and gold of filter layer
Belong to area of filter net quite, protect the area of filter layer small compared to traditional mouth mask, easy to clean, change cost is low；
4th, the flexibility and Memorability of plasticity nose bar are good, user's comfortable wearing, the skin of face gluing, sealing effect with user
It is good, effectively prevent air from entering from the gap of mouth mask and face, improve protection effect；
5th, bandage can be unpicked and washed independently, clean or change convenient.
Brief description of the drawings
Fig. 1-specific embodiment of the invention structural representation；
Fig. 2-specific embodiment of the invention mouth mask matrix front view；
Fig. 3-Fig. 2 A-A partial sectional views；
Wherein, 1- mouth masks matrix, 2- breather valves, 3- bandages, 4- plasticity nose bars, 5- metal filter screens, 6- longitudinal directions guiding gutter, 7-
Protect filter layer, 8- ring washers, 9- hydrophilic polymer membranes, 10- drainage troughs.
Embodiment
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, reverse filtration mouth mask, including mouth mask matrix 1, be connected in the two ends of mouth mask matrix 1 be used for fixation
Bandage 3, the mouth mask matrix 1 is at least coated between the oro-nasal region of user, snout of the mouth mask matrix 1 in internal and user
Separate, outside is directed away from the raised cavity geometry in user's snout direction；Connect along the edge of the cavity geometry of mouth mask matrix 1
Annular plasticity nose bar 4 corresponding with cavity edge shape is connected to, is fitted for the skin of face with user；Plasticity nose bar 4
Main material is hydrogel, and the material has good flexibility and Memorability, user's comfortable wearing, the skin of face with user
Gluing, sealing effect is good.
Referring to Fig. 1, the center of the wearing state of mouth mask matrix 1 is provided with breather valve 2 by the top, and the breather valve 2 leads to
Cross in the pilot hole that sealing ring inlay card is correspondingly arranged on mouth mask matrix 1, breather valve 2 is connected inside and outside the mouth mask matrix 1, is used for
In the mouth mask matrix 1 gas from breather valve 2 unidirectionally flow out, that is, breathe 2 can only outlet be unable to set on air inlet, the breather valve 2
There is opening and closing device to control the opening and closing that gas unidirectionally flows out from breather valve 2 in the mouth mask matrix 1 with correspondence.
Referring to Fig. 1~Fig. 3, the lower horizontal of the mouth mask matrix 1 is provided with metal filter screen 8, the metal filter screen 8
Connect inside and outside the mouth mask matrix 1, the circulation for gas inside and outside the mouth mask matrix 1；It is located at metal mistake on mouth mask matrix 1
The inner side of filter screen 5 is provided with protection filter layer 7；The profile of the protection filter layer 7 is corresponding with the profile of the metal filter screen 5 to be set
Put, the metal filter screen 5 and the mouth are folded in by profile ring washer 8 corresponding with the profile of metal filter screen 5
Between cover matrix 1；The interference inlay card of metal filter screen 5 fitting recess corresponding with the profile of metal filter screen 5 below mouth mask matrix 1
In, fitting recess is provided with inside annular protrusion with one end that the inwall of mouth mask matrix 1 is flushed, and metal filter screen 5 passes through air ring
Protection filter layer 7 is pressed abd fixed between metal filter screen 5 and the fitting recess annular protrusion of mouth mask matrix 1 by circle 8.
Protection filter layer 7 actual design is three layers, is followed successively by from outside to inside for filtering particle diameter more than 10 powder and microns
The dust layer of dirt, the adsorption antibacterial layer of moisture absorption sterilization, the filter layer for being more than for filtering particle diameter 2.5 micron dusts, it is dust layer, anti-
Bacterium layer, filter layer are sewed on together, and profile is cut into and the profile identical shape of metal filter screen 5；When needing to clean or changing,
By the elastic deformation of mouth mask matrix 1, metal filter screen 5 is taken out, ring washer 8 and protection filter layer 7 is taken out, protected
The area that filtering layer 7 compares traditional mouth mask is small, easy to clean, and change cost is low.
Referring to Fig. 2, Fig. 3, some longitudinal guiding gutters 6 are provided with the inwall of the cavity of mouth mask matrix 1, are exhaled for user
Go out water conservancy diversion of the gas in the condensed condensed water of the cavity inner wall of mouth mask matrix 1, the lower end that groove 6 is flow backwards in the longitudinal direction is pooled to
Drainage trough 10；The end of drainage trough 10 is connected with metal filter screen 5；The drainage trough 10 is set with the connectivity part of metal filter screen 5
Hydrophilic polymer membrane 9 is equipped with, the connectivity part of drainage trough 10 and metal filter screen 5, hydrophilic polymeric is completely covered in hydrophilic polymer membrane 9
The water penetration of thing film 9 is better than gas permeability, prevents air from being sucked by drainage trough 10 by people and reducing protection effect；Mouth mask matrix 1
The longitudinal guiding gutter 6 and drainage trough 10 of interior setting effectively export the condensed water of user's exhaled gas to metal filter screen 5, due to
The grid very little of metal filter screen 5, by the capillarity of the grid of metal filter screen 5, condensed water can clean metal filtration automatically
Net 5 is simultaneously dripped, and maintains the cleaning of metal filter screen 5, without frequent clean, be it also avoid moist ponding in mouth mask matrix 1 and is asked
Topic.Drainage trough 10 only connects with metal filter screen 5 and is not attached to protection filter layer 7 in this structure, can avoid the anti-of cotton
Shield filter layer 7 causes to filter easy-adhesion the brought blockage problem difficult for drop-off of the particle left, dust because of condensation by contact water,
The protection effective filter effect of filter layer 7 is ensure that, the self-cleaning function of metal filter screen 5 is improved again.
The mouth mask matrix 1 is symmetrical structure along the longitudinal centerline, it is possible to decrease the die casting of mouth mask matrix 1 is designed to
This；The main material of the mouth mask matrix 1 is air-locked polyurethane or nylon material；The mouth mask matrix 1 is die cast,
It is adapted to produce in enormous quantities.
Referring to Fig. 1, the bandage 3 is detachably connected in the chamber outer wall of mouth mask matrix 1 by snap-fastener, convenient cleaning or
Change.
The self-cleaning method of reverse filtration mouth mask carried out based on above-mentioned reverse filtration mouth mask, including normal wear are used
The reverse filtration mouth mask, the gas of user's exhalation forms condensed water after the condensation of the inwall of mouth mask matrix 1, and condensed water is through mouth mask base
Some longitudinal water conservancy diversion of guiding gutter 6 set on the inwall of body 1 flow downward, and collect and flow through drainage trough 10, through hydrophilic polymer
Film 9, is exported to metal filter screen 5, and by the capillarity of the grid of metal filter screen 5, condensed water is cleaned on metal filter screen 5
Filtrate is simultaneously dripped.
Wherein, it is additionally included in the presence of vibration and the respiratory air flow of User Activity generation, makes cold on metal filter screen 5
Solidifying water and filtrate drop.
In addition to above-mentioned unconscious cleaning, especially, conscious cleaning can also be carried out, i.e., it is special to close breather valve
Opening and closing device on 2 is so that gas can only be by protecting filter layer 7 and metal filter screen 5 to flow out in mouth mask matrix 1, now user
Exhale energetically, in the presence of expiratory airflow, make condensed water and filtrate on metal filter screen 5 be blown off.
During implementation, further, can also on mouth mask matrix 1 metal filter screen 5 assembling notch, set three to
Interior projection, by elastic deformation, fixing is installed in fitting recess by metal filter screen 5；During implementation, can also further it exist
The surrounding of metal filter screen 5 sets four journal stirrups, and four journal stirrups are threadedly attached on mouth mask matrix 1, metal filter screen 5 is pacified
Dress is fixed in fitting recess；During implementation, further, active adsorptive material can also be set in drainage trough 10, instead of hydrophilic
Turn into polymer film 9, structure：The end of drainage trough 10 is connected with metal filter screen 5, provided with activity in the drainage trough 10
Adsorbent；Active adsorptive material may filter that purification is avoided reducing protection effect by drainage trough 10 by the air that people sucks,
So, active adsorptive material is the more commonly used, and cost is low.It can be regarded as falling into this with further improved scheme during above-mentioned implementation
Invention protection domain.
It is last it should be noted that the above embodiment of the present invention is only example to illustrate the invention, still
The invention is not restricted to above-mentioned specific embodiment, above-mentioned specific embodiment is only illustrative, rather than restricted.Although
The present invention is described in detail with reference to preferred embodiment by applicant, for those of ordinary skill in the field,
Other various forms of changes and variation can also be made on the basis of described above, all embodiments can not be given here
With exhaustion, every guarantor for belonging to obvious changes or variations that technical scheme amplifies out still in the present invention
Protect the row of scope.
Claims (10)
1. reverse filtration mouth mask, including mouth mask matrix, be connected in the mouth mask matrix two ends be used for fixation bandage, the mouth mask
Matrix uses airtight material, it is characterised in that：The mouth mask matrix is housing shape, the opening with cladding face oro-nasal region
Portion, when the mouth mask matrix is fitted in face by opening portion and covers mouth and nose, mouth mask matrix inwall is formed with people's face skin
Spaced cavities；
Mouth mask matrix openings portion is connected with annular plasticity nose bar corresponding with opening portion edge shape, for the face with user
Skin is reliably fitted；The middle part of the mouth mask matrix wearing state is provided with breather valve by the top, and the breather valve connection is described
Inside and outside mouth mask matrix, unidirectionally flowed out from breather valve for gas in the mouth mask matrix, the breather valve is provided with opening and closing device
The opening and closing that gas unidirectionally flows out from breather valve in the mouth mask matrix is controlled with correspondence；It is located at wearing state on the mouth mask matrix
Oral area lower horizontal is provided with metal filter screen, and the metal filter screen is connected inside and outside the mouth mask matrix, for the mouth mask
The circulation of gas inside and outside matrix；It is located on the mouth mask matrix on the inside of metal filter screen and is additionally provided with protection filter layer, metal
There is interval between screen pack and protection filter layer；Some longitudinal guiding gutters are provided with the mouth mask matrix inwall, for using
Family exhaled gas is in the water conservancy diversion of the condensed condensed water of mouth mask matrix inwall, and the lower end that groove is flow backwards in the longitudinal direction, which is pooled to, draws
Chute；The drainage trough end is connected by hydrophilic polymer membrane with metal filter screen；The hydrophilic polymer membrane is completely covered
The connectivity part of the drainage trough and metal filter screen；The water penetration of the hydrophilic polymer membrane is better than gas permeability.
2. reverse filtration mouth mask according to claim 1, it is characterised in that：The metal filter screen can with the mouth mask matrix
Dismounting connection.
3. reverse filtration mouth mask according to claim 1, it is characterised in that：The profile and the metal of the protection filter layer
The profile of screen pack is correspondingly arranged, and the metal is folded in by profile ring washer corresponding with the metal filter screen profile
Between screen pack and the mouth mask matrix, the thickness of ring washer is the interval between metal filter screen and protection filter layer
Size.
4. reverse filtration mouth mask according to claim 1, it is characterised in that：The mouth mask matrix is symmetrical along the longitudinal centerline
Structure；The main material of the mouth mask matrix is air-locked polyurethane material；The mouth mask matrix is die cast.
5. reverse filtration mouth mask according to claim 1, it is characterised in that：The main material of the plasticity nose bar is water-setting
Glue.
6. reverse filtration mouth mask according to claim 1, it is characterised in that：The bandage is detachably connected in the mouth mask base
On external wall.
7. reverse filtration mouth mask according to claim 1, it is characterised in that：The protection filter layer is three layers, from outside to inside
It is followed successively by for filtering particle diameter more than the dust layer of 10 micron dusts, the antibiotic layer of moisture absorption sterilization, for filtering particle diameter more than 2.5
The filter layer of micron dust, dust layer, antibiotic layer, filter layer are sewed on together.
8. the self-cleaning method of reverse filtration mouth mask, it is characterised in that：This method is based on any reverse mistakes of claim 2-7
Mask and carry out；Worn including normal using the reverse filtration mouth mask, the gas of user's exhalation is cold in mouth mask matrix inwall
Condensed water is formed after solidifying, some longitudinal guiding gutter water conservancy diversion of the condensed water through being set on mouth mask matrix inwall flow downward, collected simultaneously
Drainage trough is flowed through, through hydrophilic polymer membrane, is exported to metal filter screen, it is cold by the capillarity of metal filter screen grid
The online filtrate of solidifying water cleaning metal filtration and drippage.
9. the self-cleaning method of reverse filtration mouth mask according to claim 8, it is characterised in that：It is additionally included in User Activity production
In the presence of raw vibration and respiratory air flow, condensed water that metal filtration is online and filtrate is set to drop.
10. the self-cleaning method of reverse filtration mouth mask according to claim 8, it is characterised in that：Also include closing breather valve
On opening and closing device so that gas can only flow out from metal filter screen in mouth mask matrix, in the presence of user's expiratory airflow, make
The online condensed water of metal filtration and filtrate drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710712506.9A CN107319654B (en) | 2017-08-18 | 2017-08-18 | Reverse filtering mask and self-cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710712506.9A CN107319654B (en) | 2017-08-18 | 2017-08-18 | Reverse filtering mask and self-cleaning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107319654A true CN107319654A (en) | 2017-11-07 |
| CN107319654B CN107319654B (en) | 2023-06-16 |
Family
ID=60224671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710712506.9A Active CN107319654B (en) | 2017-08-18 | 2017-08-18 | Reverse filtering mask and self-cleaning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107319654B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193151A (en) * | 2019-04-15 | 2019-09-03 | 威海易一医疗器械有限公司 | A kind of industrial anti-dust mask |
| CN114870283A (en) * | 2021-04-03 | 2022-08-09 | 何灿祥 | High-efficient environmental protection portable air purification device |
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| GB190921119A (en) * | 1909-09-15 | 1910-06-16 | Jacob Kindermann | Improvements in Respirators. |
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| CN203676200U (en) * | 2013-11-19 | 2014-07-02 | 吕文松 | Dustproof mask with function of automatically purifying air |
| CN203851847U (en) * | 2014-02-11 | 2014-10-01 | 西安工程大学 | Haze preventing respirator using evaporative cooling technology for purifying air |
| CN105167254A (en) * | 2015-11-04 | 2015-12-23 | 常胜 | Electrostatic anti-haze mouth mask |
| CN106039605A (en) * | 2016-05-31 | 2016-10-26 | 中科贝思达（厦门）环保科技股份有限公司 | Double-valve respirator |
| CN207040977U (en) * | 2017-08-18 | 2018-02-27 | 重庆大学 | A kind of reverse filtration mouth mask |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190921119A (en) * | 1909-09-15 | 1910-06-16 | Jacob Kindermann | Improvements in Respirators. |
| CN103202552A (en) * | 2013-02-22 | 2013-07-17 | 王艳 | Mask having special protection function for respiratory system |
| CN203676200U (en) * | 2013-11-19 | 2014-07-02 | 吕文松 | Dustproof mask with function of automatically purifying air |
| CN203851847U (en) * | 2014-02-11 | 2014-10-01 | 西安工程大学 | Haze preventing respirator using evaporative cooling technology for purifying air |
| CN105167254A (en) * | 2015-11-04 | 2015-12-23 | 常胜 | Electrostatic anti-haze mouth mask |
| CN106039605A (en) * | 2016-05-31 | 2016-10-26 | 中科贝思达（厦门）环保科技股份有限公司 | Double-valve respirator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193151A (en) * | 2019-04-15 | 2019-09-03 | 威海易一医疗器械有限公司 | A kind of industrial anti-dust mask |
| CN110193151B (en) * | 2019-04-15 | 2021-01-22 | 腾飞科技股份有限公司 | Industrial dust mask |
| CN114870283A (en) * | 2021-04-03 | 2022-08-09 | 何灿祥 | High-efficient environmental protection portable air purification device |
| CN114870283B (en) * | 2021-04-03 | 2024-01-09 | 山西木清心环保科技有限公司 | High-efficient environment-friendly portable air purification device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107319654B (en) | 2023-06-16 |
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