CN111530197A

CN111530197A - Filtering component and breathing mask

Info

Publication number: CN111530197A
Application number: CN202010388716.9A
Authority: CN
Inventors: 李秋红; 张宏忠; 刘桂存
Original assignee: Beijing Beishute Maternity & Child Articles Co ltd
Current assignee: Beijing Beishute Maternity & Child Articles Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-08-14

Abstract

The invention relates to a filter component and a breathing mask. The filtering component comprises a filtering membrane, and the filtering membrane is composed of double-component melt-blown fiber non-woven fabrics; respiratory mask includes above-mentioned filtering component, still includes three-dimensional face guard, bandeau and the gland that can cover human nostril and oral area, three-dimensional face guard has outer convex part, the bandeau with three-dimensional face guard both sides are connected, the gland is used for the lock to be in outer convex part, in order to form filtering membrane with outer convex part can dismantle the connection. The filter component has the advantages of light weight, convenient sterilization and low price, and can play a role in removing pollutants in air, and the breathing mask is convenient to mount, easy to wear and convenient to replace the filter membrane.

Description

Filtering component and breathing mask

Technical Field

The invention relates to the technical field of sanitary protection, in particular to a filtering component and a breathing mask.

Background

A breathing mask is a sanitary protective article, and generally refers to an appliance which is worn at the mouth and nose part and is used for filtering air entering the mouth and nose so as to achieve the purpose of preventing harmful gas, smell and spray from entering and exiting the mouth and nose of a wearer. The breathing mask has perfect filtering function on air entering the lung, and can effectively ensure that a human body keeps healthy when respiratory infectious diseases are prevalent.

The common recognition is: when respiratory infectious diseases are popular, people need to wear the mask when going out, however, because the bridge of the nose on the upper portion of the mask and two sides of the mask are not sealed, when a person wears the mask to breathe, the whole air after the air is filtered through the mask is not breathed. If the air contains germs, the mask cannot completely ensure the safety of a human body after the human body breathes the air.

Yet another situation that often occurs is: the filtering membrane in the mask is time-efficient when filtering air, generally, one mask can be worn for 4 hours at most, and after one mask is worn for 4 hours, the filtering membrane in the mask cannot effectively filter germs in the air, and at the moment, a human body needs to replace a new mask. This is so: when respiratory infectious diseases are epidemic, the mask is frequently replaced, so that the probability of infecting germs of a human body is easily increased, and social resources are wasted.

Yet another situation that often occurs is: masks are not easy to replace, especially in some cases, such as: the mask is not easy to be replaced by children, people wearing glasses, people needing to wear a hat in winter, and the like.

An authorized bulletin number is CN 203873052U's a gauze mask that microfiltration membrane can be dismantled in area, including gauze mask body and the hangers of setting on the gauze mask cup, be equipped with the opening on the gauze mask body, be provided with detachable filter element on the opening, filter element installs the back closure on the gauze mask body the opening, filter element makes the filter effect good with the microfiltration membrane of setting between the centre gripping layer of both sides including setting up the centre gripping layer in both sides, makes filter effect good through setting up microfiltration membrane, can effectively protect PM2.5, and the rethread sets up detachable filter element for it is unusual convenient to wash, also can change filter element alone, and then keeps the long-term validity of gauze mask.

However, since the filter part is fixed by the zipper, the zipper is inconvenient to be spliced with each other arbitrarily, and the teeth of the filter part are easy to be lost and easily dislocated, so that the problems of unevenness and inconvenient installation after combination are easily caused.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the invention provides the filter component and the breathing mask, which have the advantages of light weight, convenience in disinfection and low price, can also play a role in removing pollutants in air, and the breathing mask is convenient to mount, easy to wear and convenient to replace a filter membrane, so that the problems in the background art can be effectively solved.

In order to solve the technical problems, the technical scheme of the breathing mask provided by the invention is as follows:

in a first aspect, the embodiment of the invention discloses a filtering component, which comprises a filtering membrane, wherein the filtering membrane is composed of a double-component melt-blown fiber non-woven fabric.

In any of the above schemes, preferably, the bicomponent melt-blown fiber nonwoven fabric has a profiled cross section.

In any of the above aspects, preferably, the profiled cross section is multi-lobed.

In any of the above aspects, preferably, the multilobal shape is a trilobal shape.

In any of the above aspects, it is preferable that the filter membrane has a curved surface protruding outward on one side.

In any of the above aspects, it is preferable that the filter membrane has non-woven fabric surface layers on both sides.

In any of the above solutions, it is preferable that the radiation-resistant coating is further included, and the radiation-resistant coating is wrapped outside the filter membrane.

In any of the above aspects, preferably, the radiation-resistant coating is a radiation-resistant polymer.

In any of the above embodiments, preferably, the radiation-resistant polymer is a radiation-resistant polymer material.

Compared with the prior art, the filtering component comprises a filtering membrane, wherein the filtering membrane is formed by a double-component melt-blown fiber non-woven fabric, the filtering membrane is used for filtering air breathed by a human body, the selected double-component melt-blown non-woven fabric is formed by selecting a proper radiation-resistant polymer to wrap the outer layer of the double-component melt-blown fiber, the problem that the double-component melt-blown fiber is not radiation-resistant is solved, the double-component melt-blown non-woven fabric is light in weight, convenient to disinfect and low in price, and can also play a role in removing pollutants in the air.

In a second aspect, embodiments of the present invention further provide a respiratory mask, including a filter component according to any one of the aspects provided in the first aspect of the present invention.

In any of the above schemes, preferably, the breathing mask further comprises a three-dimensional mask capable of covering nostrils and mouth of a human body, a head band and a gland, wherein the three-dimensional mask is provided with an outer convex part, the head band is connected with two sides of the three-dimensional mask, and the gland is used for being buckled with the outer convex part to form that the filtering membrane is detachably connected with the outer convex part.

In any of the above aspects, preferably, the bottom of the stereoscopic mask is annular, and the annular edge is in contact with the skin of the face of the wearer.

In any of the above schemes, preferably, the breathing mask further includes headband seats distributed on both sides of the stereoscopic mask, and both ends of the headband are respectively connected to the headband seats.

In any of the above aspects, preferably, both ends of the headband are respectively connected with the headband seat through buckles.

In any of the above aspects, it is preferable that the convex portion has a first mesh thereon for supporting the filter membrane.

In any of the above solutions, it is preferable that the press cover has a second mesh thereon for pressing the filter membrane.

In any of the above schemes, preferably, the breathing mask further comprises two pushing blocks, and the two pushing blocks are respectively distributed on two side edges of the gland.

In any of the above aspects, preferably, the push block and the gland are integrally formed.

In any of the above schemes, preferably, the push block is strip-shaped.

In any of the above schemes, the thickness of the annular edge at the bottom of the three-dimensional mask is 0.8-1.2mm, and the width is 4-6 mm.

In any of the above schemes, preferably, the thickness of the annular edge at the bottom of the stereoscopic mask is 1mm, and the width of the annular edge is 5 mm.

In any of the above aspects, preferably, the headband has a width of 6-10mm and a thickness of 2-4 mm.

In any of the above aspects, preferably, the headband has a width of 8mm and a thickness of 3 mm.

In any of the above aspects, preferably, the headband is made of or contains a silicone material.

In any of the above aspects, preferably, the stereoscopic mask is integrally formed with the first mesh.

In any of the above aspects, it is preferable that the first mesh interval is 5 to 10 mm.

In any of the above aspects, preferably, the first grid pitch is 8 mm.

In any of the above solutions, it is preferable that the second mesh interval in the middle of the gland is 5-10 mm.

In any of the above aspects, preferably, the second mesh interval in the middle of the gland is 8 mm.

Compared with the prior art, the breathing mask comprises the three-dimensional mask capable of covering nostrils and mouth of a human body, the head band and the pressing cover, the three-dimensional mask is provided with the outer convex parts, the head band is connected with two sides of the three-dimensional mask, the pressing cover is used for being buckled on the outer convex parts to form the detachable connection of the filtering membrane and the outer convex parts, the technical defects that the existing mask is inconvenient to detach and install are overcome, the mounting is convenient, the wearing is easy, and the filtering membrane can be conveniently replaced.

Drawings

The drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. FIG. 1 is an exploded view of a preferred embodiment of a respiratory mask according to the present invention;

FIG. 2 is an assembled schematic view of the embodiment of FIG. 1 of a respiratory mask according to the present invention;

FIG. 3 is a perspective view of the embodiment of the respirator of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic view of a preferred embodiment of the connection of the gland, second mesh and push block in a respiratory mask according to the present invention;

FIG. 5 is an enlarged schematic view at A of the embodiment of FIG. 1 of a respiratory mask according to the present invention;

FIG. 6 is a perspective view of a preferred embodiment of a filter membrane and radiation-resistant polymer of a filter assembly according to the present invention;

FIG. 7 is a schematic view of the filter membrane attached to a curved surface in the embodiment of FIG. 5 of a filter element according to the present invention;

FIG. 8 is a schematic view of the attachment of the filtration membrane to the nonwoven facing in the embodiment of FIG. 5 of a filter element according to the present invention.

The reference numbers in the figures illustrate:

the mask comprises a three-dimensional mask body 1, a convex part 101, a first grid 2, a headband 3, a headband seat 4, a filtering membrane 5, a curved surface 51, a non-woven fabric surface layer 52, a radiation-resistant coating 6, a gland 7, a second grid 8 and a push block 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

For better understanding of the above technical solutions, the technical solutions of the present invention will be described in detail below with reference to the drawings and the detailed description of the present invention.

Example (b):

as shown in fig. 6, 7 and 8, in a first aspect, the embodiment of the present invention provides a filter element, which includes a filter membrane 5, wherein the filter membrane 5 is made of a bicomponent meltblown fiber Nonwoven Fabric (Non Woven Fabric or Non Woven cloth), which is also called Nonwoven Fabric, and is made of oriented or random fibers. It is called a cloth because of its appearance and certain properties. The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like. In the embodiment of the invention, one side of the filtering membrane 5 is provided with the curved surface 51 which protrudes outwards, the curved surface 51 can increase the filtering area of the filtering membrane 5, and according to the definition of bending deformation in material mechanics, after the soft material is bent into an arch shape, the width of the soft material is actually reduced, and the toughness and the structural strength of the material are increased.

In the embodiment of the invention, the two sides of the filtering membrane 5 are provided with non-woven fabric surface layers 52, the non-woven fabric surface layers 52 are organosilicon quaternary ammonium salt non-woven fabrics, the organosilicon non-woven fabrics are non-woven fabrics dipped in organosilicon quaternary ammonium salt emulsion, and the non-woven fabrics are dried and prepared to be used as the non-woven fabric surface layers 52 of the invention. The organosilicon quaternary ammonium salt has lasting antibacterial effect, no drug resistance and high safety to human body and environment. The organosilicon quaternary ammonium salt can be used as an antibacterial finishing agent directly or after being prepared into emulsion and microemulsion. The mechanism is that the chemical bond of the cationic group with bactericidal performance is combined on the surface of the fiber through the organic silicon, the negatively charged bacteria, fungi, yeasts and the like are attracted, the freedom of movement of the bacteria, the fungi, the yeasts and the like is bound, the respiratory function of the bacteria is inhibited, and the bacteria permeate into the cells of the bacteria through cell membranes, so that the metabolism of enzymes in the cells is destroyed and the bacteria die. Thereby achieving the effects of sterilization and bacteriostasis and generating contact death. The organosilicon quaternary ammonium salt belongs to a non-dissolution type antibacterial finishing agent, and is widely applied because of firm and durable combination with fiber, obvious antibacterial effect and safety and reliability to human bodies.

In the embodiment of the invention, the filter component further comprises a radiation-resistant coating 6, the radiation-resistant coating 6 is wrapped outside the filter membrane 5, the radiation-resistant coating 6 is a radiation-resistant polymer, the radiation-resistant polymer is an irradiation-resistant high polymer material, and the irradiation-resistant high polymer material is a polymer capable of keeping relative stability under various radiation irradiation, and comprises a composite material prepared by adding a light stabilizer into a common high polymer material and an intrinsic irradiation-resistant high polymer formed by an irradiation-resistant high polymer. Long-term irradiation of various rays is an important cause of deterioration of polymer products, and thus it is very important to improve the radiation resistance of materials. The radiation resistance of the polymer is related to the molecular structure, molecular weight and aggregation state of the polymer, and the polymer which does not absorb some rays or generates photocrosslinking after absorbing the rays has good radiation resistance, such as polystyrene, polyethylene and the like. In contrast, polymers that decompose after irradiation are less radiation resistant, such as butyl rubber and the like. In addition, the prevention of the entry of rays or the quenching of excited free radicals caused by radiation is also an important means for improving radiation resistance, an intrinsic radiation-resistant polymer can be formed by introducing a stable structure into a polymer molecule, and a composite radiation-resistant material can be formed by adding a stabilizer into the polymer.

The bicomponent melt-blown fiber non-woven fabric can supplement the deficiency of single polymer performance, such as polypropylene is cheaper, but if the bicomponent melt-blown fiber non-woven fabric is used for medical and sanitary materials, the bicomponent melt-blown fiber non-woven fabric is not resistant to radiation, so that the polypropylene can be used as a core, and a proper radiation-resistant coating 6 is selected to wrap the outer layer of the bicomponent melt-blown fiber non-woven fabric, so that the radiation-resistant problem can be solved. Thus, the product is cheap and can meet the functional requirements, such as heat and humidity exchanger used in respiratory system in medical field, and can provide proper heat and humidity similar to natural heat and humidity. It has light weight, easy disinfection, low cost and the additional function of pollutant eliminating filter. It may be composed of two uniformly mixed bicomponent meltblown webs. A sheath-core type bicomponent melt-blown fiber non-woven fabric is adopted, the core is polypropylene, and the sheath layer is nylon. The bicomponent melt-blown fiber non-woven fabric can also adopt a special-shaped section, such as a trilobal shape and a multi-leaf shape, so that the surface area is larger.

Compared with the prior art, the filtering component comprises a filtering membrane 5, wherein the filtering membrane 5 is formed by a double-component melt-blown fiber non-woven fabric, the filtering membrane 5 is used for filtering air breathed by a human body, the selected double-component melt-blown non-woven fabric is formed by selecting a proper radiation-resistant polymer to wrap the outer layer of the double-component melt-blown fiber, the problem that the double-component melt-blown fiber is not radiation-resistant is solved, the filtering component has the advantages of light weight, convenience in disinfection and low price, and can also play a role in removing pollutants in the air, the double-component fiber can also adopt a special-shaped section such as a trilobal shape and a multi-lobal shape to enable the surface area of the double-component melt-blown fiber to be larger, meanwhile, the radiation-resistant polymer capable of improving the filtering performance can be adopted on the surface layer or. Compared with common melt-blown fiber products, the bicomponent melt-blown fiber non-woven fabric can further improve the filtering performance of the filter medium, and enables the filter medium to have antistatic property, electric conductivity, moisture absorption, enhanced barrier property and the like, or enables the cohesiveness, bulkiness and air permeability of a fiber net to be improved.

In a second aspect, as shown in fig. 1, 2, 3 and 4, embodiments of the present invention provide a respiratory mask including a filter component as provided in the first aspect of the present invention.

In the embodiment of the invention, the breathing mask further comprises a three-dimensional mask 1 worn on the mouth and nose of a face, and a filtering membrane 5 consisting of two-component melt-blown fiber non-woven fabric, wherein the three-dimensional mask 1 is provided with an outer convex part 101, a gland 7 buckled on the outer convex part 101 and used for fixing the filtering membrane 5, the bottom of the three-dimensional mask 1 is annular, the annular edge is contacted with the skin of the face and can isolate air from entering the breathing mask, two side surfaces of the three-dimensional mask 1 are also provided with headband seats 4, the end parts of the headband 3 are respectively connected with the headband seats 4, the middle part of the outer convex part 101 is provided with a first grid 2, the middle part of the gland 7 is provided with a second grid 8, the filtering membrane.

The three-dimensional mask 1 is made of a Silica gel material, wherein the Silica gel is a Silica gel, the Silica gel is a transparent or milky granular solid, and the main component of the Silica gel is Silica dioxide, so that the three-dimensional mask is low in density and light in texture. Except strong alkali and hydrofluoric acid, the silica gel does not react with any substance, is insoluble in water and any solvent, is nontoxic and odorless, has stable chemical properties, and does not deform in hot water at the temperature of below 120 ℃. Therefore, the three-dimensional mask 1 made of the silica gel material can be sterilized by boiling with hot water and can be reused.

As shown in fig. 1 to 5, the bottom of the three-dimensional mask 1 is annular, in order to ensure that the annular edge is in close contact with the skin of the face of a human body, the thickness of the annular edge is designed to be 0.8-1.2mm, the thickness of the annular edge can be designed to be 0.8mm, 1mm, 1.2mm and the like, the three-dimensional mask can be adjusted according to the requirements of a user when in use, multiple practical tests prove that the thickness of the annular edge is recommended to be designed to be 1mm (as H in fig. 5), and through the tests, the annular edge in the size range can achieve the close contact between the three-dimensional mask 1 and the skin of the face of the human body, and can keep the comfort of the human body after being; the annular side width is designed to be 4-6mm, the annular side width can be designed to be 4mm, 5mm, 6mm and the like, the annular side width can be adjusted according to the requirements of users when the mask is used, multiple practical tests prove that the annular side width is recommended to be designed to be 5mm (h in figure 5), and through tests, the annular side in the size range can achieve the purpose that the three-dimensional mask 1 is in close contact with the skin of the face of a human body, and meanwhile, the comfort of the human body after being worn can be kept.

As shown in fig. 1 to 5, since the standard nasal height of the eastern person is generally not less than 9mm from the nasal root to the nasal bridge, the standard nasal height of the male is 12 mm, and the female is 11 mm. The height of the side edge of the three-dimensional mask 1 is designed to be 30-40mm, the height of the side edge of the three-dimensional mask 1 can be designed to be 30mm, 35mm, 40mm and the like, multiple practical tests prove that the height of the side edge of the three-dimensional mask 1 is recommended to be 35mm, and the height is suitable for the nose bridge height of easterns, can be suitable for the easterns to wear, and can ensure the normal breathing of human bodies.

As shown in fig. 1 to 5, the three-dimensional face mask 1 has headband seats 4 on both sides thereof, which are integrated with the three-dimensional face mask 1, and the headband 3 can be fixed to the headband seats 4 by means of a snap-fit. In order to facilitate cleaning and disinfection of the headband 3, the headband 3 is made of a silica gel material or contains a silica gel material, wherein the main component is silica, and the headband is low in density and light in texture. Except strong alkali and hydrofluoric acid, the silica gel does not react with any substance, is insoluble in water and any solvent, is nontoxic and odorless, has stable chemical properties, and does not deform in hot water at the temperature of below 120 ℃. Therefore, the headband 3 made of the silica gel material can be used for steam sterilization with hot water and can be reused, when the product is used, the headband 3 is placed on the rear side of the head of a person, the annular bottom of the three-dimensional mask 1 is tightly pressed with the face of the person by utilizing the stretchability of the silica gel material, and air can be isolated from entering the breathing mask. In order to ensure the stretchability of the headband 3, the design width of the headband 3 is 6-10mm, the recommended width is 8mm, the width of the headband 3 can be designed to be 6mm, 7mm, 8mm, 9mm, 10mm and the like, the headband can be adjusted according to the requirements of a user when in use, multiple practical tests prove that the width of the headband 3 is recommended to be 5mm, the headband 3 in the size range can achieve the effect that the headband 3 can keep the comfort after being worn by the human body, if the headband 3 is wider, the headband 3 is easy to press the face of the user, the face of the user is uncomfortable, if the headband 3 is thinner, the headband 3 is easy to break, and the face of the human body is easy to feel uncomfortable; the design thickness of the headband 3 is 2-4mm, the thickness of the headband 3 can be designed to be 2mm, 3mm, 4mm and the like, the headband can be adjusted according to the requirements of a user when in use, multiple practical tests prove that the thickness of the headband 3 is recommended to be designed to be 3mm, and the headband 3 in the size range can ensure that the headband 3 can keep the comfort of a human body after being worn.

As shown in fig. 1 to 5, the convex portion 101 is integrally formed with the first mesh 2, and the first mesh 2 is designed to fix the filter membrane 5 made of the two-component meltblown fiber nonwoven fabric. First net 2 is integrative with three-dimensional face guard 1, first net 2 design interval is 5-10mm, wherein, can be with the interval design of first net 2 5mm, 6mm, 7mm, 8mm, 9mm, 10mm etc. can adjust according to user's demand when using, practice test proves many times, the interval design of recommending first net 2 is 8mm, because the interval is too big, easily leak filtration membrane 5, unsuitable fixed filtration membrane 5, and the air flow who sees through filtration membrane 7 can be reduced to the interval of undersize, make the person of wearing breathe not well-order, thereby produce discomfort.

As shown in fig. 1, 6 to 8, the filtering membrane 5 of the present invention is a melt-blown nonwoven fabric, specifically a bicomponent melt-blown fiber nonwoven fabric, and the bicomponent melt-blown nonwoven fabric selected in the present technology is coated with a suitable radiation-resistant polymer on the outer layer of the bicomponent melt-blown fiber, so as to solve the problem of radiation-intolerance of the bicomponent melt-blown. It has light weight, easy disinfection, low cost and capacity of eliminating pollutant from air. The bicomponent fiber can also adopt a special-shaped section, such as a trilobal shape and a multi-lobal shape, so that the surface area of the bicomponent fiber is larger, and meanwhile, a radiation-resistant polymer capable of improving the filtering performance can be adopted on the surface layer or the leaf tip part of the bicomponent fiber, the radiation-resistant polymer is an irradiation-resistant high polymer material, and the bicomponent melt-blown fiber non-woven fabric enables the fiber to have various required performances. Compared with common melt-blown fiber products, the bicomponent melt-blown fiber non-woven fabric can further improve the filtering property of the filter medium, and enables the filter medium to have antistatic property, conductivity, hygroscopicity, enhanced barrier property and the like, or enables the cohesiveness, bulkiness and air permeability of a fiber net to be improved, so the bicomponent melt-blown fiber non-woven fabric is adopted in the technology.

As shown in fig. 1 to 4, the gland 7 of the present invention is made of a silica gel material, the middle of the gland 7 is provided with a second grid 8, two sides of the edge of the gland 7 are provided with push blocks 9, the gland 7 is buckled on the outer convex part 101, the gland 7 and the outer convex part 101 jointly fix the filter membrane 5 in the middle of the gland 7, the second grid 8 in the middle of the gland 7 is designed with a distance of 5-10mm, wherein the distance of the second grid 8 can be designed to be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., when in use, the gland can be adjusted according to the requirements of a user, and multiple practical tests prove that the distance of the second grid 8 is recommended to be designed to be 8mm, an excessively large distance is not suitable for fixing the filter membrane 5, and an excessively small distance can reduce the air flow passing through the.

As shown in fig. 1 to 4, two sides of the edge of the gland 7 are respectively provided with a push block 9, and the push blocks 9 and the gland 7 are integrally formed. Ejector pad 9 and gland 7 are made by the silica gel material, consequently have elasticity, and ejector pad 9 and bandeau seat 4 are the adjacent design in position, and this is for when changing filtration membrane 5, only needs two fingers, and bandeau seat 4 is pushed down to a finger, and another finger promotes ejector pad 9, and what just can be convenient takes off gland 7, later takes out filtration membrane 5, installs new filtration membrane 5 again, pushes up gland 7 at last, can accomplish filtration membrane 5 and change.

Compared with the prior art, the breathing mask provided by the embodiment of the invention can replace the filtering membrane 5, and comprises the three-dimensional mask capable of covering the nostrils and the mouth of a human body, the head band and the gland, wherein the three-dimensional mask is provided with the outer convex part, the head band is connected with two sides of the three-dimensional mask, and the gland is used for being buckled on the outer convex part to form the detachable connection of the filtering membrane and the outer convex part, so that the technical defects that the existing mask is inconvenient to detach and install are overcome, the mounting is convenient, the wearing is easy, and the filtering membrane can.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter element comprising a filter membrane (5), characterized in that: the filtering membrane (5) is composed of bicomponent melt-blown fiber non-woven fabrics.

2. The filter element of claim 1, wherein: the double-component melt-blown fiber non-woven fabric adopts a special-shaped section.

3. The filter element of claim 2, wherein: the special-shaped section is multi-leaf-shaped.

4. A filter element according to claim 3, wherein: the multilobal shape is a trilobal shape.

5. The filter element of claim 1, wherein: one side of the filter membrane (5) is provided with a curved surface (51) protruding outwards.

6. The filter element of claim 1, wherein: the filtration membrane (5) has non-woven fabric surface layers (52) on both sides.

7. The filter element according to any one of claims 1 to 6, wherein: also comprises a radiation-resistant coating (6) which is wrapped outside the filtering membrane (5).

8. The filter element of claim 7, wherein: the radiation-resistant coating (6) is a radiation-resistant polymer.

9. The filter element of claim 8, wherein: the radiation-resistant polymer is a radiation-resistant high polymer material.

10. A respiratory mask, characterized by: comprising a filter element according to any one of claims 1 to 9.