CN108992820A - Filter core for mask - Google Patents
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- CN108992820A CN108992820A CN201810851055.1A CN201810851055A CN108992820A CN 108992820 A CN108992820 A CN 108992820A CN 201810851055 A CN201810851055 A CN 201810851055A CN 108992820 A CN108992820 A CN 108992820A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
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- Respiratory Apparatuses And Protective Means (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses the gradient porosity filter core for individual respiratory protection and using the mask of the filter core, mask can be non-dismountable formula or replaceable filer element type.Filter core includes outer layer, centre and internal layer filter layer.Outer filter layers and intermediate filter layer are being opened up to porosity heterogeneous；Internal layer filter layer has uniform porosity；Non-homogeneous porosity can be in exhibition to consecutive variations, can also the ladder distribution on the region that exhibition is artificially divided to limited quantity.The porosity gradient of outer layer, the mean porosities of intermediate filter layer and internal layer filter layer successively decreases.The fiber of filter core is disorderly arranged at random, such as melt spraying non-woven fabrics, Static Spinning silk flosssilk wadding material.The present invention can take into account respiratory resistance and filter efficiency；The air flow rate and particulate matter accumulation for making filter core developable surface are uniformly distributed, and the particulate dirt for improving filter core is unevenly distributed and makes that local stoppages are too fast to cause premature failure, extends the service life of filter core, to reduce quantity consumed, the resource waste and pollution of mask filter core.
Description
Technical field
The present invention relates to a kind of filter cores for individual respiratory protection mask, and using the mask of the filter core.
Background technique
Haze weather takes place frequently in recent years, and in order to cope with haze weather, haze-proof mask is gone out most often to wear anti-as people
Protect articles；In industry spots such as such as Precision Machining, closing exploitations, anti-dust mask is to ensure operator's life and health and safety
Necessary article；Either haze-proof mask or anti-dust mask, protection effect depend on filter core.
Mask on the market mostly uses greatly two kinds of filter cores of melt spraying non-woven fabrics and electrostatic filter pulp at present；Melt spraying non-woven fabrics filter material
Material can play the mechanical trapping mechanism such as retention, inertia and gravitational settling to the trapping of particle, and electrostatic filter pulp is in melt spraying non-woven fabrics
On the basis of carry out the filtering material of charging process, it is main to be made by the irregularities of melt-blown fiber structural and the absorption of electrostatic force
It is filtered with to pollutant.
Chinese patent application 201710129353.5 (publication number CN106723520A) discloses a kind of haze mask master
Body material and mask, haze Mask main body material therein are filter core, including compound the first filter layer and the is sequentially laminated
Two filter layers；First filter layer, specially needle pierce electrostatic cotton；Second filter layer is specially stayed through what water repellent was handled
Pole melt spraying non-woven fabrics；The outer surface of first filter layer is also compounded with outer layer, which is specially the melt-blown handled through water repellent
Non-woven fabrics；The inner surface of second filter layer is also compounded with internal layer, which is specially the anti-bacteria cloth without OIT；The stacking
Complex method specifically: ultrasonic bonds mode, hot calendering bonding mode or physical adhesion mode.The patent provides a kind of tools
Body embodiment filters PM3 using as the needle of the first filter layer thorn electrostatic cotton, using as the melt-blown nothing of the second filter layer
Woven fabric filters PM2.5；The main deficiency of the patent is: two filter layers are related to two kinds of materials, therefore need two during fabrication
The different manufacturing process of kind, this makes manufacturing process cumbersome；The classified filtering for only realizing PM3 and PM2.5, is less than diameter
2.5 μm of particles do not have classified filtering, therefore filter efficiency is relatively low.
Japanese patent application JP2016-229653 (publication number JP2018-87387A) discloses a kind of haze-proof mask, main
Body material is the mask for including filter core and mask outer layer；The patent is by the material of design mouthpiece surface body portion and close to ear portion
The material divided is upper different from rigidity in venting quality, i.e., the venting quality of mouthpiece surface body portion material and rigidity are higher than mask close to ear
Partial material, design in this way, it is therefore intended that reduce mask close to the leakage problem of ear portions；The patent it is main
Deficiency is: in that patent, the real fluxes when venting quality of material and wearing are relationships of equal value, i.e. the patent thinks mouth
The ventilatory capacity of corresponding position also increases accordingly when the venting quality of cover improves, and the mask of patent mouth nose in actual wear is attached
Close filter core is prematured by solids at first and respiratory resistance increase causes failure, the filter core at other positions there are still filtering function, from
And filter core service life is caused to shorten, mask is abandoned too early.
Summary of the invention
For the present invention for people in actual wear mask, filter core hole is locally being prematured by solids too fast and failure ask
Topic, provide it is a kind of exhibition to and it is longitudinal all with the mask filter core of gradient porosity.
Since filter core belongs to porous media, the porosity refers to porosity of the filter core as porous media；Porosity is
The percentage of material total volume in its natural state is accounted for for pore volume in material.
In the present invention, definition, when wearing, the curved surface on fitting face surface is developable surface, and the direction perpendicular to developable surface is longitudinal
(direction shown in arrow in Fig. 1), direction along developable surface from upside to downside be exhibition to；As shown in Figure 1,11,12,13,14,15 institutes
Space curved surface be developable surface, be to open up to direction shown in arrow as in figure along the direction from upside to downside of developable surface；Therefore
Described here in exhibition is the porosity of 11,12,13,14,15 5 parts to a kind of embodiment for having gradient porosity structure
Change in gradient.
In the present invention, definition, when wearing, filter core is inside close to the side of human face, and the side far from human face is outer
Side.
In the present invention, definition, when wearing, filter core is located at face top, is upside close to the side of nose, is located at face
Lower part, close to mouth side be downside.
Existing filter core in actual use, due to the influence of population nose location and shape, on the downside of filter core close to mouth
Fraction maximum flow, therefore occurring particle blocking in the interfiber pore at this at first excessively causes respiratory resistance excessive
And then cause the premature failure of filter core；Existing mask filter core does not consider that air flow rate is distributed excessive problem on the downside of mask,
Therefore existing mask filter core all has that the service life is short, causes mask replacement frequent.
The existing filter core for being 0.73 for porosity can be obtained on the downside of filter core by numerical simulation actual wear operating condition
Airflow volume flow on the regional gas stream maximum flow of face mouth, unit developable surface area is 0.0165m3/(s·
㎡), and minimum with the symmetrical upside air flow rate in the region, the airflow volume flow on unit developable surface area is
0.0117m3/ (s ㎡), unevenness can reach 34.32%；This flow distribution can unevenly make filter core different parts logical
The particulate matter quantity crossed is uneven, i.e., the particulate matter passed through in the big region of flow is more, therefore close to mouth portion on the downside of filter core
Fibre gap occurs at first and is blocked by particulate matter for position, and then respiratory resistance increases and causes filter core premature failure.
Analyzed based on the studies above, for uniform porosity structure filter core cause people when using mask flow exhibition to
Filter core premature failure caused by distribution unevenly, it is of the invention to solve above-mentioned technical problem with the filter effect of raising filter core
Design scheme be:
A kind of filter core is provided, it includes outer filter layers, intermediate filter layer and internal layer filter layer；Outer filter layers, centre
Filter layer and internal layer filter layer ecto-entad successively stack setting；Three layer filtration layer is in the porosity longitudinally with gradient-structure；
The outer filter layers and intermediate filter layer are being opened up to different porositys；The internal layer filter layer is in exhibition to identical
Porosity.
In the present invention, it defines, mean porosities are face of a certain filtering layer porosity to the filter layer developable surface gross area
Product average value.
Further, longitudinal gradient-structure porosity of the three layer filtration layer refers to three layers of mean porosities by outside
Successively successively decrease inwardly.
Further, the outer filter layers refer to from upside to lower-side hole gap rate to the different porosities having in exhibition and pass
Subtract.
Further, the intermediate filter layer refers to from upside to lower-side hole gap rate to the different porosities having in exhibition and passs
Subtract.
Further, the outer filter layers, the intermediate filter layer and the internal layer filter layer sequentially through hot pressing,
The methods of Electrostatic Absorption is combined with each other.
Further, the outer filter layers, the intermediate filter layer are consistent with the material of the internal layer filter layer, for fibre
The porous media material for tieing up random distribution, such as can be melt spraying non-woven fabrics, electro static filtering cotton or electrospun material.
Filtration mechanism of the filter core to particulate matter: since the quality of particulate matter is big compared with gas molecule quality, thus particulate matter
Inertia it is big, particulate matter is more difficult to change than the motion state of gas molecule, and fiber occurs and is easy to knock fiber or fiber when streaming
The particle deposition layer on surface and be captured, later due to Van der Waals force, electrostatic attraction the effects of, particulate matter is attached on fiber,
Realize the effect of filtration of particulate matters；Since the inertia of the particulate matter of small particle, carried charge etc. are smaller, to the followability of air-flow
By force, it more difficult to be captured by fiber, therefore the partial size of particle is smaller, be more difficult to be filtered.
When the porosity of filter core increases, i.e., the total volume of filter core shared by hole increases, then volume shared by fiber is reduced, particle
The probability that object is captured by fiber lowers, and filter capacity and filter effect reduce therewith.
Since the filter capacity of filter core is improved with the reduction of porosity, three layers of filter capacity is from the outside to the inside
It is gradually increased.
Since outermost porosity is big, filter capacity is relatively low, though there is the function of filter small particles, is mainly used to
Filter large-sized particulate matter；The porosity of middle layer and the particulate matter diameter of main filtration are placed in the middle；For failing by outermost layer and
The small particle that middle layer filters out, is filtered by innermost layer；Using such three layers of gradient porosity structure, it can be achieved that pressing
The classified filtering of particulate matter diameter, caused by both avoidable filter core porosity is excessive not to the filter effect of small size particle
It is good, but mask pressure drop caused by the porosity of filter core can be prevented too small is excessive, and respiratory resistance increases, comfort drop when people wears
It is low.
By outer filter layers and intermediate filter layer in the porosity structure for opening up upward change of gradient, i.e., office big in flow
Low porosity is arranged in portion, in the small local setting high porosity of flow.The porosity structure successively decreased is set gradually from top to bottom, it can
It is fitted in practical respiratory and is being opened up by the air flow rate of uniform porosity filter core to status unevenly distributed, i.e. this hair
It is bright to weaken the problem big at the position close to mouth portion of the inspiratory flow as caused by population nose-shaped shape；Original flow is small
Local setting be relatively large porosity, thus reduce resistance increase flow；The corresponding resistance of porosity larger part is smaller, hole
The corresponding resistance of gap rate smaller part is larger, and existing mass flow discrepancy is even when wearing mask with the gradient distribution compensation of porosity, so that
Uniform flow improves filter core service life so as to improve local obstructing problem.
Internal layer filter layer has uniformly unified porosity, so that the case where can only filtering bulky grain on the upside of filter core is avoided,
Improve the filter capacity on the upside of filter core.
Therefore, the position that the present invention can alleviate the i.e. close mouth portion in filter core part be first prematured by solids and caused by failure
It is too fast, extend the service life of filter core, reduces the replacement frequency of mask；Simultaneously in the premise for not reducing people's wearing mask comfort level
Under, improve the filter efficiency to particulate matter；Therefore the present invention has great market prospects in mask demand huge today
With practical application meaning.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described；The accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Attached drawing 1 is that the exhibition of filter core of the present invention divides schematic diagram to longitudinal region；
Attached drawing 2 is the Respirator structure schematic diagram using filter core of the present invention；
Attached drawing 3 is to existing mask filter core in actual wear flow in process distributing vector figure, the number of arrow length and flow
It is worth directly proportional；
Attached drawing 4 is the schematic diagram of a certain specific embodiment 3 of the present invention；
Attached drawing 5 is the schematic diagram of a certain specific embodiment 4 of the present invention.
It is marked in attached drawing 1 as follows: 1- outer filter layers；2- middle layer filter layer；3- internal layer filter layer.
It is marked in attached drawing 2 as follows: the 11- outer filter layers transverse banded region area A, 12- outer filter layers transverse banded region B
Area, the 13- outer filter layers transverse banded region area C, the 14- outer filter layers transverse banded region area D, 15- outer filter layers transverse belt
The area E of shape area；The 21- intermediate filter layer transverse banded region area A, the 22- intermediate filter layer transverse banded region area B, 23- intermediate filter layer are horizontal
To the banded regions area C, the 24- intermediate filter layer transverse banded region area D, the 25- intermediate filter layer transverse banded region area E；The filtering of 3- internal layer
Layer.
It is marked in attached drawing 4 as follows: 1- filter core；2- cotton coats outer layer；3- nose clip；4- ear band；5- zipper.
It is marked in attached drawing 5 as follows: 1- filter core；2- outer layer non-woven fabrics covering material；3- nose clip；4- ear band.
Specific embodiment
Clear, complete description is carried out to technical solution of the present invention below in conjunction with attached drawing, described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments；Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Main part of the invention is filter core, is mainly used for filtering the particle of PM2.5 rank；Filter core of the present invention can be with filter core
The clad combination of outside constitutes the filtration body part of mask, and wherein the main function of clad is filtering such as pollen, big grain
Diameter dust equal diameter is greater than 2.5 μm of particle.
The filtering material that the present invention uses is the disorderly arranged porous media material of fiber, both may include largely adopting on the market
Emerging electrostatic spinning cotton material can also be used in melt spraying non-woven fabrics and electrostatic filter pulp.
Melt-blown principle: will feed melt blowing machine after polymer melting, spray fiber filament by nozzle, fiber filament is in reception device
Networking after upper cooled and solidified, to form melt spraying non-woven fabrics, the fibre diameter of melt spraying non-woven fabrics is in a range (1 μm of -10 μ
M) change in, and fibre diameter, porosity can be adjusted by adjusting the technological parameter of manufacturing process；Electrostatic filter
Cotton: carrying out charging process on the basis of existing filtering material such as melt spraying non-woven fabrics, and filtering material electrification is made to obtain electrostatic
Filter pulp further increases the capture ability to particulate matter；Electrostatic spinning: polymer solution or melt are sprayed in strong electrical field
Spinning is penetrated, under electric field action, the drop at syringe needle becomes conical (taylor cone) from spherical shape, and extends to obtain from conical tip
Fiber filaments, networking after fiber filaments solidify on receiving device, to form electrospun material, fibre diameter is one
Change in a range (about 300nm-900nm), and fibre diameter, porosity can pass through the technique of adjusting manufacturing process
Parameter is adjusted.
For the filtering material of random fibers composition, the air permeability of material can be obtained with fibre diameter, hole by empirical equation
The variation relation of gap rate, the i.e. air permeability of material are improved with the increase of porosity, are increased with the increase of fibre diameter；Material
The filter capacity of particle is reduced with the increase of porosity.
Embodiment 1:
A kind of mask filter core；The filter element body includes outer filter layers, intermediate filter layer, internal layer filter layer；It is described outer
Layer filter layer, the intermediate filter layer and the internal layer filter layer successively stack setting from outside to inside；The outer filter layers, institute
It states intermediate filter layer and the outer filter layers is used to filtering particulate dirt, three layer porosity ecto-entads are sequentially reduced, from
And it realizes the particle of outer filter layers main filtration and is greater than the particle of intermediate filter layer main filtration, intermediate filter layer main filtration
Particle be greater than internal layer filter layer filtering particle；Five transverse belts are respectively divided upwards in outer filter layers and intermediate filter layer exhibition
Shape region, porosity are sequentially reduced from top to bottom, so that air flow rate be made to be uniformly distributed upwards in filter core exhibition, prevent part because of mistake
Filter particle blocking leads to too fast failure, improves the service life of filter core.
This example exhibition to porosity be non-consecutive variations, compare further application of the invention --- consecutive variations
The production technology of porosity, this example is more simple.
The porosity that the outer filter layers are sequentially reduced, which refers to, is divided into five transverse banded regions for filter core upwards in exhibition
Domain, it is 0.78,0.77,0.76,0.75,0.74 that porosity, which can be set gradually, from top to bottom.
The porosity that the intermediate filter layer is sequentially reduced, which refers to, is divided into five transverse banded regions for filter core upwards in exhibition
Domain, it is 0.77,0.76,0.75,0.74,0.73 that porosity, which is set gradually, from top to bottom.
The internal layer filtering layer porosity is 0.72.
The exhibition of intermediate filter layer and outer filter layers is to gradient porosity structure, to make air flow rate in exhibition to uniform point
Cloth；Internal layer filter layer integrally uses uniform porosity structure, and the porosity to prevent upside is excessive and generates to small particle
The consequence of grain poor filtration effect, so that finally having ideal filtering effect to particle of each region to small particle in exhibition
Fruit.
The mean porosities ecto-entad of the three layer filtration layer, which is sequentially reduced, refers to three layers of mean porosities ecto-entad
Respectively 0.76,0.75 and 0.72.
Since porosity is related to venting quality, i.e., related to resistance when breathing, when porosity is too small, respiratory resistance increases,
Filter effect reduces when porosity is excessive；Therefore the numerical value of the porosity distribution is by the hole of existing 3M mask filter core about 0.737
Gap rate is set out, and the purpose being arranged in this way is that the respiratory resistance of this filter core and existing filter core is made to keep similar numerical value, avoids this
Respiratory resistance caused by filter core porosity is too small or excessive increases or filter effect reduces.
Five transverse banded regions domain shape is as shown in Figure 2: the division in five transverse banded regions domain wears mask by people
Breathing numerical simulation computation model set out, according to filter core exhibition to flow distribution filter core is divided into five regions；Fig. 3 is indicated
Five region divisions of the flow distribution polar plot in numerical simulation result, this example are based on above-mentioned polar plot, by flow by number
Value is divided into five regions, the porosity of the corresponding filter core position setting gradient in five regions.
Embodiment 2:
A kind of mask filter core；The filter element body includes outer filter layers, intermediate filter layer, internal layer filter layer；It is described outer
Layer filter layer, the intermediate filter layer and the internal layer filter layer successively stack setting from outside to inside；The outer filter layers, institute
It states intermediate filter layer and the outer filter layers is used to filtering particulate dirt, three layer porosity ecto-entads are sequentially reduced, from
And it realizes the particle of outer filter layers main filtration and is greater than the particle of intermediate filter layer main filtration, intermediate filter layer main filtration
Particle be greater than internal layer filter layer main filtration particle；Upward in outer filter layers and intermediate filter layer exhibition, porosity is by upper
It is sequentially reduced downwards, so that air flow rate be made to be uniformly distributed upwards in filter core exhibition, prevents part from causing because particle blocking is too fast
Fast failure improves the service life of filter core.
This example exhibition to porosity be consecutive variations, compare further application of the invention --- open up to the non-company of piecemeal
The porosity of continuous change of gradient, the actual effect of this example is more preferably.
The porosity that the outer filter layers are sequentially reduced refers in exhibition upwards by the porosity of filter core from upside to downside
It is continuously reduced by 0.78 to 0.74, the specific rule or functional relation of reduction are distributed according to air flow rate shown in Fig. 3, i.e. flow
Big region is small porosity, and the small region of flow is macroporosity.
The porosity that the intermediate filter layer is sequentially reduced refers in exhibition upwards by the porosity of filter core from upside to downside
It is continuously reduced by 0.77 to 0.73, the specific rule or functional relation of reduction are distributed according to air flow rate shown in Fig. 3, i.e. flow
Big region is small porosity, and the small region of flow is macroporosity.
The internal layer filtering layer porosity is 0.72.
The exhibition of intermediate filter layer and outer filter layers is to gradient porosity structure, to make air flow rate in exhibition to uniform point
Cloth；Internal layer filter layer integrally uses uniform porosity structure, and the porosity to prevent upside is excessive and generates to small particle
The consequence of grain poor filtration effect, so that finally having ideal filtering effect to particle of each region to small particle in exhibition
Fruit.
The mean porosities ecto-entad of the three layer filtration layer, which is sequentially reduced, refers to three layers of mean porosities ecto-entad
Respectively 0.76,0.75 and 0.72.
Since porosity is related to venting quality, i.e., related to resistance when breathing, when porosity is too small, respiratory resistance increases,
Filter effect reduces when porosity is excessive；Therefore the numerical value of the porosity distribution is by the hole of existing 3M mask filter core 0.737
Rate is set out, and the purpose being arranged in this way is that the respiratory resistance of this filter core and existing filter core is made to keep similar numerical value, avoids this filter
Respiratory resistance caused by core porosity is too small or excessive increases or filter effect reduces.
Embodiment 3
A kind of replaceable anti-haze anti-dust mask of filter core, as shown in Fig. 4, it includes filter core 1, cotton cladding outer layer 2, nose
Folder 3, ear band 4 and zipper 5；Filter core 1 is placed in cotton cladding outer layer 2, and nose clip 3 and ear band 4 are placed on cotton cladding outer layer,
Zipper 5 is provided at the top of cotton cladding outer layer 2.
The filter core includes filter core described in embodiment 1 or embodiment 2 and other meet innovative point institute in summary of the invention
Other filter cores.
The cotton cladding outer layer is sewed as shown in 2 in attached drawing 4 by two layers of cotton, and filter core 1 is located among two layers of cotton,
Convenient for replacing filter core；The effect of the cotton cladding outer layer is mainly the biggish particle of specific filtration resistance, such as pollen, sand and dust；Filter core
Main function be filter small particle particle.
For the nose clip as shown in 3 in attached drawing 4, material is metal, V-shaped, and is placed in the top of cotton cladding outer layer 2.
For the ear band as shown in 4 in attached drawing, material is elastic rubber, is gone here and there in the two sides of cotton cladding outer layer 2.
Embodiment 4
A kind of anti-haze anti-dust mask of non-dismountable formula, as shown in Fig. 5；It includes filter core 1, outer layer non-woven fabrics covering material
2, nose clip 3 and ear band 4；Wherein filter core is placed in non-woven fabrics covering material 2, and nose clip 3 and ear band 4 are fixed on outside by spot welding mode
In layer non-woven fabrics covering material.
The filter core 1 includes filter core described in embodiment 1 or embodiment 2 and other meet innovative point institute in summary of the invention
Other filter cores.
For the non-woven fabrics cladding outer layer as shown in 2 in attached drawing 5, material is polypropylene needle punched non-woven fabrics；The nonwoven cloth bag
The effect for covering outer layer is mainly the biggish particle of specific filtration resistance, such as pollen, sand and dust；The main function of filter core is PM2.5 grades of filtering
Other particle.
For the nose clip as shown in 3 in attached drawing 5, material is metal, V-shaped, and is fixed on non-woven fabrics top by spot welding.
For the ear band 4 as shown in 4 in attached drawing 5, material is elastic rubber, is fixed on non-woven fabrics top by spot welding.
Example effects
Following Tables 1 and 2 shows the embodiment of the present invention 1 and 3M-N95 mask filter element filtering service life and Contrast on effect；
Since the main reason for filter core failure is the increasing for the respiratory resistance that the reduction of porosity caused by the accumulation of particle in turn results in
Greatly, therefore using porosity foundation of the degree reduced as service life length；In table listed porosity be mask flow most
Concentrated area, and the porosity of failed areas at first, the i.e. porosity on the downside of the mask in mouth portion.
Table 1
Table 2
Claims (11)
1. a kind of filter core for mask characterized by comprising outer filter layers, intermediate filter layer, internal layer filter layer；Institute
It states outer filter layers, the intermediate filter layer and the internal layer filter layer and successively stacks setting from outside to inside；Three layer filtration layer
Mean porosities ecto-entad is sequentially reduced, so that the outer filter layers be made to be mainly used for filtering large-sized particulate matter, institute
It states intermediate filter layer to be mainly used for filtering the particulate matter of medium grain size, the internal layer filter layer is mainly used for filtering two layers above-mentioned
Filter layer fails the small size particle filtered out；The outer filter layers and intermediate filter layer are being opened up to different holes
Rate, thus compensation due at mouth and nose shaped position influence to cause that excessive by the air flow rate of part on the downside of filter core, filter core is local
By particulate matter block it is too fast and caused by mask premature failure so that flow is uniformly distributed on filter core；The internal layer filter layer
It is opening up to porosity having the same.
2. filter core according to claim 1, which is characterized in that it is described to open up to different porositys, refer to hole
Rate can open up upward consecutive variations.
3. filter core according to claim 1, which is characterized in that it is described to open up to different porositys, refer to hole
Rate can also on opening up artificial division region to limited quantity stepped change.
4. filter core according to claim 1, which is characterized in that it is described exhibition to different porositys, be exhibition to
Successively decrease from upside to downside porosity size.
5. filter core according to claim 1, which is characterized in that the outer filter layers, the intermediate filter layer and described
Internal layer filter layer is combined with each other sequentially through hot pressing or Electrostatic Absorption method.
6. the filter core according to claim 1 for mask, which is characterized in that the outer filter layers, the intermediate mistake
Filtering layer is consistent with the material of the internal layer filter layer, is the porous media material of fiber random distribution.
7. filter core according to claim 6, which is characterized in that the porous media material is that will feed after polymer melting
Melt blowing machine sprays fiber filament, the melt spraying non-woven fabrics that fiber filament obtains after cooled and solidified networking on the reception device by nozzle.
8. filter core according to claim 6, which is characterized in that the porous media material is on the basis of melt spraying non-woven fabrics
Upper carry out charging process, electro static filtering cotton obtained from charging material.
9. filter core according to claim 6, which is characterized in that the porous media material is by polymer solution or to melt
Body carries out jet spinning in strong electrical field, the Static Spinning silk flosssilk wadding obtained after networking after solidifying on receiving device.
10. a kind of mask, filter core is any one filter core described in claim 1 to 9, which is that filter core is replaceable,
It can be reused by replacing filter core.
11. a kind of mask, filter core is any one filter core described in claim 1 to 9, filter core and the mask outside of the mask
Clad edge one circle compacting be integrated, it is non-dismountable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851055.1A CN108992820B (en) | 2018-07-30 | 2018-07-30 | Filter element for mask |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851055.1A CN108992820B (en) | 2018-07-30 | 2018-07-30 | Filter element for mask |
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| Publication Number | Publication Date |
|---|---|
| CN108992820A true CN108992820A (en) | 2018-12-14 |
| CN108992820B CN108992820B (en) | 2021-03-30 |
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|---|---|---|---|
| CN201810851055.1A Active CN108992820B (en) | 2018-07-30 | 2018-07-30 | Filter element for mask |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111134400A (en) * | 2020-04-02 | 2020-05-12 | 上海护理佳实业有限公司 | Disposable mask pad |
| CN113134267A (en) * | 2021-04-23 | 2021-07-20 | 东华大学 | Thermal comfort filter material with multilayer structure and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1139903A (en) * | 1980-09-30 | 1983-01-25 | Joseph H. Edwards | Cold weather face mask |
| CN204032437U (en) * | 2014-05-04 | 2014-12-24 | 中国原子能科学研究院 | A kind of anti-dust respirator filter disc |
| CN104305593A (en) * | 2014-09-30 | 2015-01-28 | 阳普医疗（湖南）有限公司 | Haze-proof mask |
| CN105476113A (en) * | 2014-12-28 | 2016-04-13 | 大庆元子科技开发有限公司 | Low-resistance uniform-pressure mask with buffering cavity |
| CN105476114A (en) * | 2014-12-28 | 2016-04-13 | 大庆元子科技开发有限公司 | Three-dimensional low-pressure folding mask |
| CN105495774A (en) * | 2014-12-28 | 2016-04-20 | 大庆元子科技开发有限公司 | Vertical folding mark folding low-pressure mask |
| CN105688349A (en) * | 2016-04-18 | 2016-06-22 | 广州拜费尔空气净化材料有限公司 | Anti-virus mask |
| CN105795550A (en) * | 2015-12-07 | 2016-07-27 | 小米科技有限责任公司 | Mask |
| CN207477006U (en) * | 2017-10-26 | 2018-06-12 | 广东都市丽人实业有限公司 | A kind of three-dimensional replaceable filter core mask body and mask of breathing freely |
| CN108185547A (en) * | 2017-12-21 | 2018-06-22 | 石新娣 | A kind of mask of special improved structure |
-
2018
- 2018-07-30 CN CN201810851055.1A patent/CN108992820B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1139903A (en) * | 1980-09-30 | 1983-01-25 | Joseph H. Edwards | Cold weather face mask |
| CN204032437U (en) * | 2014-05-04 | 2014-12-24 | 中国原子能科学研究院 | A kind of anti-dust respirator filter disc |
| CN104305593A (en) * | 2014-09-30 | 2015-01-28 | 阳普医疗（湖南）有限公司 | Haze-proof mask |
| CN105476113A (en) * | 2014-12-28 | 2016-04-13 | 大庆元子科技开发有限公司 | Low-resistance uniform-pressure mask with buffering cavity |
| CN105476114A (en) * | 2014-12-28 | 2016-04-13 | 大庆元子科技开发有限公司 | Three-dimensional low-pressure folding mask |
| CN105495774A (en) * | 2014-12-28 | 2016-04-20 | 大庆元子科技开发有限公司 | Vertical folding mark folding low-pressure mask |
| CN105795550A (en) * | 2015-12-07 | 2016-07-27 | 小米科技有限责任公司 | Mask |
| CN105688349A (en) * | 2016-04-18 | 2016-06-22 | 广州拜费尔空气净化材料有限公司 | Anti-virus mask |
| CN207477006U (en) * | 2017-10-26 | 2018-06-12 | 广东都市丽人实业有限公司 | A kind of three-dimensional replaceable filter core mask body and mask of breathing freely |
| CN108185547A (en) * | 2017-12-21 | 2018-06-22 | 石新娣 | A kind of mask of special improved structure |
Non-Patent Citations (3)
| Title |
|---|
| 向晓东: "《烟尘纤维过滤理论、技术及应用》", 31 March 2007, 冶金工业出版社 * |
| 夏征农等: "《大辞海.第32卷》", 31 December 2015, 上海辞书出版社 * |
| 高连勋: "《聚酰亚胺纤维》", 31 May 2017, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111134400A (en) * | 2020-04-02 | 2020-05-12 | 上海护理佳实业有限公司 | Disposable mask pad |
| CN113134267A (en) * | 2021-04-23 | 2021-07-20 | 东华大学 | Thermal comfort filter material with multilayer structure and preparation method thereof |
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