CN210960531U - Breathe new coronary pneumonia epidemic situation protection gauze mask of binary channels antifog formula - Google Patents

Abstract

The utility model relates to the field of medical equipment, concretely relates to breathe new hat pneumonia epidemic situation protective facial mask of binary channels antifog formula, include: the mask comprises a mask sheet, a barrier diaphragm, a support framework, an air suction pipe sheet and an exhalation valve structure; the technical scheme of the utility model breathing in and exhaling of gauze mask go on for the route of difference respectively, and medical staff inhales the regional air suction gauze mask intermediate layer of glasses lens through inhaling the trachea piece when breathing in then filters and inhales, exhausts through the expiratory valve structure during exhaling. The special expiration and inspiration channel is arranged, so that gas can not be crossed, and the phenomenon that fog can be discharged from the side is avoided. Simultaneously a small amount of top combustion gas can be through the directional suction of breathing pipe piece, avoids concentrating in the lens region to the at utmost, and the effectual phenomenon of avoiding glasses lens to haze has guaranteed medical staff's visuality, easy operation, convenient and practical.

Description

Breathe new coronary pneumonia epidemic situation protection gauze mask of binary channels antifog formula

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a breathe new hat pneumonia epidemic situation protective facial mask of binary channels antifog formula.

Background

New coronavirus abuses everywhere in China, and aiming at the droplet infection way confirmed by the new coronavirus, the mask can play a direct protective role, but the defects of the existing mask are more and more obvious along with the popularization of the existing mask in the whole people and the long-time wearing condition of medical care personnel:

1. the existing mask is poor in isolation effect, the side and the skin have an unavoidable gap, particularly, the upper portion of the mask and the position of the nose bridge have a vacancy, the mask has the risk of infection, and the mask can be applied to daily life traveling, but the virus density is high in places with serious epidemic situations such as hospitals and the like, the effect of isolation and protection cannot be completely achieved, so that infection of a large number of medical workers occurs, infected people are increased, and medical strength is weakened.

2. The current gauze mask needs to be hung at the ear position through the fag end, and the fag end is taut to tighten medical staff ear root skin, wears for a long time and can lead to medical staff ear root position pain intolerable, and the fag end can cut the ear root even, and the person of even appears red swelling and ulcerate infection. Meanwhile, the side of the existing mask is too hard, which often causes the facial and neck positions of medical staff to be too deep and painful due to too long pressure. Medical staff often need carry out the activity by a wide margin because the treatment needs the head, leads to the neighboring of gauze mask and hangs the rope and can make a round trip to grind at medical staff's ear root and parts such as neck, and it is fragile to soak to lead to the skin humidity for a long time in sweat simultaneously, very leads to the fact skin to grind to form the cut mark.

3. Present gauze mask cooperation glasses are worn simultaneously and are made the gas of exhalation condense easily on the glasses lens, very easily appear the phenomenon of hazing on the lens, can't see clearly to the medical staff who wears glasses, and is very troublesome. Although there is the gauze mask at present to have the inboard design of gauze mask in nose bridge position department gauze mask, nevertheless can't eliminate completely and exhale the fog influence that brings the lens, the gauze pad can't play the guard action to the virus simultaneously, has very big potential safety hazard.

4. The existing mask rope belts are fixed in length, some mask rope belts have weak elastic stretchability, but the mask can be too tight or too loose when being worn by obese or weak people. Too tightly lead to the fag end and gauze mask avris to oppress medical staff too strongly, and too loose can lead to the gauze mask can't play basic safeguard effect.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide a breathe new hat pneumonia epidemic situation protective facial mask of binary channels antifog formula.

The utility model aims at realizing through the following technical scheme:

the utility model provides a pair of breathe new coronary pneumonia epidemic situation protective facial mask of binary channels antifog formula, include: the mask comprises a mask sheet, a barrier diaphragm, a support framework, an air suction pipe sheet and an exhalation valve structure; the outer side surface of the mask piece is wrapped with a barrier diaphragm, the barrier diaphragm has air impermeability, a plurality of supporting frameworks are arranged at an interlayer between the mask piece and the barrier diaphragm, the edge positions of the barrier diaphragm and the mask piece are sealed by sealing edges, the upper end of the interlayer is respectively communicated with the air suction pipe pieces by two sides, and the air suction pipe pieces are internally provided with one-way valves I which enable the air suction pipe pieces to only suck air but not to exhale air; the exhalation valve structure is arranged on the mask and communicated with the interlayer, and the exhalation valve structure comprises a one-way valve II so that the exhalation valve structure can only exhale and cannot inhale.

Further, the exhalation valve structure also includes: the breathing valve seat, the elastic pressing ring and the breathing valve cover; the elastic pressing ring is pressed on the one-way valve II, and then the two are arranged on the exhalation valve seat together and are covered by the exhalation valve cover.

Furthermore, the bottom of the exhalation valve seat is of an annular bottom surface structure, an annular clamping wall structure is arranged on the bottom surface structure, the inner diameter of the inner circumferential wall of the annular clamping wall structure is larger than the inner diameter of the inner ring of the bottom surface structure, so that the bottom surface structure forms an annular supporting surface structure which protrudes inwards in the radial direction in the annular clamping wall structure, and the elastic pressing ring is pressed on the one-way valve II and then is arranged on the annular supporting surface structure together.

Furthermore, a plurality of groups of supporting stop rods which are uniformly distributed circumferentially are arranged on the inner wall of the bottom surface structure in the axial direction, and the upper end surfaces of the supporting stop rods and the upper end surface of the annular support surface structure are in the same height plane; a plurality of supporting stop levers are provided with a raised cylindrical fixing pin at the intersection, a fixing pin hole is formed in the one-way valve II, an annular clamping wall pressing ring is arranged on the inner wall of the annular clamping wall, and the one-way valve II is arranged on the plurality of supporting stop levers; the edge of the one-way valve II is pressed on the annular support surface structure, and an elastic pressing ring and a clamping wall pressing ring are sequentially pressed on the annular support surface structure.

Furthermore, vent seams with the number equal to that of the support stop levers are uniformly distributed on the circumference of the one-way valve II; the position of the vent seam on the edge of the one-way valve II is initial, a gap is formed in the middle of the one-way valve II along the radial direction, the one-way valve II has elastic deformation characteristics, and the vent seam is blocked by the support stop lever corresponding to the support stop lever.

Furthermore, the side lines at the two sides of the upper end surface of the supporting stop lever are designed with rounded corners.

Furthermore, the elastic pressing ring has elastic deformation characteristic and is provided with a notch.

Furthermore, a protruding clamping ring I with a semicircular and annular protruding cross section is arranged on the inner wall of the buckling edge of the exhalation valve cover, a protruding clamping ring II with a semicircular and outward protruding cross section is arranged on the outer wall of the upper port of the corresponding annular clamping wall, and a plurality of sector-shaped vacant positions with uniformly distributed circumferences are formed in the upper end surface of the exhalation valve cover.

Further, the plurality of supporting frameworks are not connected in pairs.

Furthermore, the whole thickness of the air suction pipe pieces is consistent with the thickness of the interlayer, the air suction pipe pieces are in the L type trend, and the left and right symmetry of the two air suction pipe pieces enables the upper end air suction ports of the two air suction pipe pieces to point to the directions of the glasses lenses on the corresponding sides of the two air suction pipe pieces respectively.

The utility model discloses an among the new crown pneumonia epidemic situation protective facial mask of breathing binary channels antifog formula, breathing in and exhaling of gauze mask are gone on for the different ways respectively, and medical staff inhales the regional air of glasses lens through the trachea piece during breathing in and then filters the inhalation in the gauze mask intermediate layer, exhausts through the expiratory valve structure during exhaling. The special expiration and inspiration channel is arranged, so that gas can not be crossed, and the phenomenon that fog can be discharged from the side is avoided. Simultaneously a small amount of top combustion gas can be through the directional suction of breathing pipe piece, avoids concentrating in the lens region to the at utmost, and the effectual phenomenon of avoiding glasses lens to haze has guaranteed medical staff's visuality, easy operation, convenient and practical.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a structural view of an angle of the respiratory two-channel anti-fog type protective mask for new coronary pneumonia epidemic situation;

FIG. 2 is a structural diagram of another angle of the respiratory two-channel anti-fogging type protective mask for new coronary pneumonia epidemic situation;

FIG. 3 is a structural diagram of a mask sheet and a barrier diaphragm in the respiratory two-channel anti-fogging type new coronary pneumonia epidemic situation protective mask of the utility model;

FIG. 4 is a structural diagram of the interlayer part of the respiratory two-channel anti-fog type new coronary pneumonia epidemic situation protective mask of the utility model;

FIG. 5 is a structural diagram of an air suction pipe sheet in the respiratory double-channel anti-fogging type new crown pneumonia epidemic situation protective mask of the utility model;

FIG. 6 is an exploded view of the exhalation valve structure of the respiratory dual-channel anti-fogging type new crown pneumonia epidemic situation protection mask of the present invention;

FIG. 7 is a sectional view of the structure of the exhalation valve in the respiratory two-channel anti-fogging type new crown pneumonia epidemic situation protective mask of the present invention;

FIG. 8 is a structural diagram of the exhalation valve seat in the respiratory two-channel anti-fog type new crown pneumonia epidemic situation protective mask of the utility model;

FIG. 9 is a sectional view of the exhalation valve seat and the exhalation valve cover in the respiratory two-channel anti-fog type new crown pneumonia epidemic situation protective mask of the utility model;

wherein the reference numerals are: 1. a mask sheet; 2. a barrier membrane; 3. a support framework; 4. a suction tube sheet; 5. a one-way valve I; 6. a one-way valve II; 7. an exhalation valve seat; 8. an elastic pressing ring; 9. an exhalation valve cover; 10. an annular chuck wall; 11. an annular support surface; 12. a support stop lever; 13. a fixing pin; 14. a fixing pin hole; 15. a wall clamping pressing ring; 16. ventilating seams; 17. a raised collar I; 18. a raised retainer ring II; 19. an air bag nose pad; 20. binding bands; 21. hanging a rope; 22. a sealing gasket; 23. a retraction block; 24. an airway plate.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1 to 9, the utility model discloses a breathe new coronary pneumonia epidemic situation protective facial mask of binary channels antifog formula, include: the mask comprises a mask sheet 1, a barrier diaphragm 2, a support framework 3, an inhalation tube sheet 4 and an exhalation valve structure; the outer side surface of the mask sheet 1 is wrapped with a barrier diaphragm 2, the barrier diaphragm 2 has air impermeability, a plurality of support frameworks 3 are arranged at an interlayer between the mask sheet 1 and the barrier diaphragm 2, the edge positions of the barrier diaphragm 2 and the mask sheet 1 are sealed, the upper end of the interlayer is respectively communicated with an air suction pipe sheet 4 by two sides, and a one-way valve I5 is arranged in the air suction pipe sheet 4 to ensure that the air suction pipe sheet 4 can only suck air and can not exhale air; the exhalation valve structure is arranged on the mask and communicated with the interlayer, and the exhalation valve structure comprises a one-way valve II 6, so that the exhalation valve structure can only exhale and cannot inhale.

The utility model discloses an among the new crown pneumonia epidemic situation protective facial mask of breathing binary channels antifog formula, breathing in and exhaling of gauze mask are gone on for the different ways respectively, and medical staff inhales the gauze mask intermediate layer with the regional air of glasses lens through inhaling trachea piece 4 when breathing in then filters and inhales, exhausts through the expiratory valve structure during exhaling. The special expiration and inspiration channel is arranged, so that gas can not be crossed, and the phenomenon that fog can be discharged from the side is avoided. Simultaneously a small amount of top combustion gas can be through 4 directional inhales of air suction pipe pieces, avoids concentrating in the lens region to the at utmost, and the effectual phenomenon of avoiding glasses lens to haze has guaranteed medical staff's visuality, easy operation, convenient and practical.

Preferably, the exhalation valve structure further includes: an expiratory valve seat 7, an elastic pressing ring 8 and an expiratory valve cover 9; the elastic pressing ring 8 is pressed on the one-way valve II 6, and then the two are arranged on the expiratory valve seat 7 together and are covered by the expiratory valve cover 9.

An expiratory valve structure is fixedly arranged at the position between the mask sheet 1 and the barrier diaphragm 2 close to one side of the mask sheet in a penetrating way, and the expiratory valve structure mainly comprises an expiratory valve seat 7, a one-way valve II 6, an elastic pressing ring 8 and an expiratory valve cover 9.

Preferably, the bottom of the exhalation valve seat 7 is of an annular bottom surface structure, the bottom surface structure is provided with an annular clamping wall 10 structure, the inner diameter of the inner circumferential wall of the annular clamping wall 10 structure is larger than the inner diameter of the inner ring of the bottom surface structure, so that the bottom surface structure forms an annular support surface 11 structure protruding inwards in the radial direction in the annular clamping wall 10 structure, and the elastic pressing ring 8 is pressed on the one-way valve II 6 and then is arranged on the annular support surface 11 structure together.

The bottom of the expiration valve seat 7 is provided with a circular bottom surface structure, an annular clamping wall 10 structure is fixed on the bottom surface structure, the annular clamping wall 10 structure has a certain protruding height, and the inner diameter of the inner wall of the circumference is larger than the inner diameter of the inner ring of the bottom surface structure, so that the bottom surface structure forms an annular support surface 11 structure protruding inwards in the radial direction in the annular clamping wall 10 structure.

Preferably, a plurality of groups of supporting stop rods 12 which are uniformly distributed circumferentially are arranged on the inner wall of the bottom surface structure in the axial direction, and the upper end surfaces of the supporting stop rods 12 and the upper end surface of the annular support surface 11 structure are the same height plane; a plurality of supporting stop levers 12 are provided with a raised cylindrical fixing pin 13 at the intersection, a fixing pin hole 14 is formed on the one-way valve II 6, an annular clamping wall pressing ring 15 is arranged at the inner wall of the annular clamping wall 10, and the one-way valve II 6 is arranged on the plurality of supporting stop levers 12; the edge of the one-way valve II 6 is pressed on the annular support surface 11 structure, and an elastic pressing ring 8 and a clamping wall pressing ring 15 are sequentially pressed on the annular support surface.

And three groups of supporting stop rod 12 structures which are uniformly distributed circumferentially are fixedly arranged on the inner wall of the inner ring of the bottom surface structure in the axial direction, and the upper end surfaces of the supporting stop rods 12 and the upper end surface of the annular support surface 11 structure are the same height plane. The three sets of support bars 12 are configured with a raised cylindrical retainer pin 13 at the intersection of the axial locations. An annular clamping wall pressing ring 15 is fixed on the inner wall of the annular clamping wall 10 at a certain height above the supporting stop lever 12, the clamping wall pressing ring 15 has a certain thickness, and the annular support surface 11 structurally supports the circular one-way valve II 6.

Preferably, the circumference of the one-way valve II 6 is uniformly distributed with vent seams 16 with the same number as the support stop levers 12; the vent seam 16 is at the initial position of the edge of the one-way valve II 6, a gap is formed in the middle of the one-way valve II 6 along the radial direction, the one-way valve II 6 has elastic deformation characteristic, and the vent seam 16 is blocked by the support stop lever 12 at the position corresponding to the support stop lever 12 at the position of the vent seam 16.

Three groups of vent seams 16 are uniformly distributed on the circumference of the one-way valve II 6, the vent seams 16 are extremely thin in width, and the vent seams 16 are formed along the middle of the one-way valve II 6 along the radial direction at the initial positions of the disk surfaces of the one-way valve II 6, which are slightly close to the edges. The one-way valve II 6 has a slight elastic deformation characteristic, so that three groups of valve surfaces of the one-way valve II 6 can slightly elastically deform towards the outer side in the positive expiratory pressure state in an interlayer between the mask surface and the barrier diaphragm 2, and gas can be discharged. In a normal state, the vent seams 16 of the one-way valve II 6 are attached to and pressed on the upper end surface of the support stop rod 12 structure of the expiratory valve seat 7, so that air cannot enter the mask.

Preferably, the support bars 12 are designed with rounded corners at the side lines of both sides of the upper end surface.

The rounded corners are designed at the side lines at the two sides of the upper end surface of the structure of the support stop lever 12, and the air exhaust of the support stop lever 12 is in accordance with the air flow engineering through expiration, so that the air can be smoothly exhausted. And the width of the upper end surface plane of the two side end edges of the upper end of the supporting stop lever 12 after the fillet is still far larger than that of the vent slot 16, thereby stably ensuring that the air is not sucked and passed.

Preferably, the elastic pressing ring 8 has elastic deformation characteristics and is provided with a notch.

Fill up annular elasticity clamping ring 8 between the card wall clamping ring 15 of annular card wall 10 structure inner wall and barrier diaphragm 2, elasticity clamping ring 8 has the elastic deformation characteristic, and wherein one side annular limit is equipped with the opening and can be suitable for the breathing valve seat 7 of different inner wall sizes, fills up back elasticity clamping ring 8 and is in the state of compressing tightly all the time between card wall clamping ring 15 and barrier diaphragm 2 to can stabilize the edge of fixed barrier diaphragm 2, guarantee stable in structure.

Preferably, a protruding collar I17 with a semicircular and annular protruding section is arranged on the inner wall of the buckling edge of the exhalation valve cover 9, a protruding collar II 18 with a semicircular and outward protruding section is arranged on the outer wall of the upper port of the corresponding annular collar 10, and a plurality of sector-shaped vacant positions which are uniformly distributed on the circumference are formed on the upper end surface of the respiration valve cover.

The upper end of the expiratory valve seat 7 is covered with the expiratory valve cover 9 in a buckling manner, the inner wall of the buckling edge of the expiratory valve cover 9 is provided with a convex clamping ring I17 with a semicircular and annular convex section, the outer wall of the upper port of the annular clamping wall 10 on the corresponding breather valve seat is provided with a convex clamping ring II 18 with the same specification and a semicircular and outward convex section, and the respective convex clamping rings of the breather valve seat and the breather valve cover are clamped with each other when the cover is buckled, so that the breather valve cover is ensured not to fall off relative to the breather valve seat. The upper end face of the breathing valve cover is provided with a plurality of fan-shaped vacant sites which are uniformly distributed on the circumference, so that the exhaled gas can be smoothly discharged.

Preferably, the plurality of supporting skeletons 3 are not connected two by two.

The technical proposal of the utility model is improved on the designs of an air bag nose pad 19, a bandage 20, a hanging rope 21, a sealing washer 22, a retractable block 23, etc. This technical scheme has protective screen diaphragm 2 at the regional parcel of gauze mask piece 1's lateral surface total, protective screen diaphragm 2 has the air impermeability, certain clearance has simultaneously between protective screen diaphragm 2 and the 1 lateral surface of gauze mask piece, the inside fixed a plurality of supporting framework 3 that are provided with of intermediate layer department between protective screen diaphragm 2 and the 1 lateral surface of gauze mask piece, supporting framework 3 one side and 1 lateral surface fixed connection of gauze mask piece, and can not two liang of connections between the support frame, guarantee that whole intermediate layer region all belongs to the feed through state. The opposite side is connected with barrier diaphragm 2's medial surface, and support frame 3 extends to border position from the intermediate position that leans on of 1 lateral surface of gauze mask piece for play the shore effect to barrier diaphragm 2, prevent barrier diaphragm 2 and 1 lateral surface laminating of gauze mask piece when negative pressure state appears in the intermediate layer inside, guaranteed that both have the state of intermediate layer.

Preferably, the whole thickness of the air suction pipe piece 4 is consistent with the thickness of the interlayer, the air suction pipe piece 4 is shaped like L, and the left and right symmetry of the two air suction pipe pieces 4 enables the upper end air suction openings of the two air suction pipe pieces 4 to respectively point to the direction of the spectacle lenses on the corresponding sides.

The edge sealing design is carried out at the edge positions of the barrier diaphragm 2 and the mask piece 1, so that external air is prevented from being sucked into the interlayer from the edge position of the interlayer, the edge sealing positions of the upper end of the interlayer close to two sides are respectively and fixedly communicated with an air suction pipe piece 4, the whole thickness of the air suction pipe piece 4 is consistent with the thickness of the interlayer, and two ends of the air suction pipe are communicated with the inside of the interlayer to enable the external air to enter the interlayer through the air suction pipe piece 4, the air suction pipe piece 4 has a certain L-shaped trend, the left air suction port and the right air suction port of the two air suction pipe pieces 4 are respectively directed to the eyeglass lens directions of the corresponding sides of the two air suction pipe pieces 4 in a bilateral symmetry mode, two air duct plates 24 are arranged on the air suction pipe piece 4 in the direction far away from the eyeglass lenses, the two air duct plates 24 are arranged on the mask piece 1, a one-way valve I5 is arranged inside the air suction pipe piece 4, the one-way valve I5 has the one-way opening and opening effect, the one-way opening and the one-way valve I can only upwards open and can open and can not open and open the area in the mask piece 2 to the outside through the interlayer when the medical staff inhales air, the medical staff can not exha.

The utility model discloses specially design for solving the medical staff who wears glasses and producing fog on the glasses lens when wearing the gauze mask. The utility model discloses a whole unanimity of medical protective facial mask appearance on gauze mask piece 1 and the market, the interior outside material of gauze mask piece 1 is also unanimous, and the facial medial surface of laminating is senior non-woven fabrics, and inside is high electrostatic fibers, corresponds bridge of the nose department and equally is provided with the metal strip nose clip in gauze mask top lateral surface for carry out the fixed effect of profile modeling to bridge of the nose department. An air bag nose pad 19 is fixedly arranged on the inner side face of the mask corresponding to the metal strip nose clip, the air bag nose pad 19 is of a bilateral symmetry structure, and the middle position of the air bag nose pad is right corresponding to the position of the nose bridge. The position that corresponds the bridge of the nose in the middle of gasbag nose pad 19 is provided with bridge of the nose profile and lets the position, and the both sides region of gasbag nose pad 19 also diminishes to both sides thickness from the centre gradually simultaneously, and the gauze mask medial surface is closed to smooth-going the meeting in both sides edge position for gasbag nose pad 19 is whole and human bridge of the nose and bridge of the nose both sides all can perfectly laminate. Although most of the breath can be prevented from being discharged at the upper edge of the mask sheet 1 through the air bag nose pad 19, a small part of the breath can not be discharged, so that a small amount of mist can still be generated on the lens when the lens is worn for a long time, and the fogging phenomenon can be more obvious when the temperature is lower.

The utility model discloses an innovation technical point and beneficial effect lie in at least:

1. the utility model discloses breathing in and exhaling of gauze mask among the technical scheme are gone on for the different ways respectively, and medical staff inhales the regional air suction gauze mask intermediate layer of glasses lens through inhaling trachea piece 4 during inhaling then filters and inhales, exhausts through the expiratory valve structure during exhaling. The special expiration and inspiration channel is arranged, so that gas can not be crossed, and the phenomenon that fog can be discharged from the side is avoided. Meanwhile, a small amount of gas discharged from the upper part can be sucked in a directional way through the air suction pipe piece 4, aggregation in a lens area is avoided to the maximum extent, the phenomenon of fogging of the glasses lens is effectively avoided, and the visibility of medical staff is ensured.

2. The utility model discloses 1 lateral surface parcel of gauze mask piece has certain spaced protective screen diaphragm 2 among the technical scheme, and the air in the protective screen outside passes through the gauze mask face and gets into to inside, forms the air flue in interval intermediate layer department again, and the trachea piece 4 of being convenient for breathes in. The supporting framework 3 is fixedly arranged in the interlayer, and the supporting supports are not connected in pairs, so that the whole interlayer region is not attached, and the interlayer region is communicated.

3. The expiratory valve structure is characterized in that a one-way valve II 6 is clamped on a supporting stop lever 12 structure of the expiratory valve seat 7, the vent seams 16 and the supporting stop levers 12 are in one-to-one correspondence to ensure a one-way ventilation state, and rounded corners are designed at the side lines on two sides of the upper end face of the supporting stop lever 12 structure, so that air exhaust of the supporting stop lever 12 during expiration conforms to air flow engineering, and air can be smoothly exhausted. And the width of the upper end surface plane of the two side end edges of the upper end of the supporting stop lever 12 after the fillet is still far larger than that of the vent slot 16, thereby stably ensuring that the air is not sucked and passed.

4. When the cover is buckled, the convex clamping rings designed on the breathing valve seat and the breathing valve cover are clamped mutually, so that the breathing valve cover is ensured not to fall off relative to the breathing valve seat.

5. The air suction pipe piece 4 is designed like L type, so that the air suction port points to the lens, the air at the position of the lens can be sucked in a targeted manner, the air circulation in the lens area is increased, and the lens is ensured not to be fogged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention. .

Claims (10)

1. The utility model provides a breathe new coronary pneumonia epidemic situation protective facial mask of binary channels antifog formula which characterized in that includes: the mask comprises a mask sheet, a barrier diaphragm, a support framework, an air suction pipe sheet and an exhalation valve structure; the mask sheet is a medical protective mask sheet, the inner surface material and the outer surface material of the mask sheet are consistent, the inner side surface of the attaching face is high-grade non-woven fabric, and high-static fiber is arranged in the high-grade non-woven fabric; the outer side surface of the mask piece is wrapped with the barrier diaphragm, the barrier diaphragm has air impermeability, a plurality of support frameworks are arranged at an interlayer between the mask piece and the barrier diaphragm, the edge positions of the barrier diaphragm and the mask piece are sealed by sealing edges, the upper end of the interlayer is respectively communicated with the air suction pipe pieces by two sides, a one-way valve I is arranged in the air suction pipe pieces, so that the air suction pipe pieces can only suck air and can not breathe out, and the air suction ports of the air suction pipe pieces point to glasses lenses worn by medical staff; the exhalation valve structure is arranged on the mask and communicated with the interlayer, and the exhalation valve structure comprises a one-way valve II, so that the exhalation valve structure can only exhale and cannot inhale.

2. The respiratory binary-channel anti-fogging protective mask for new coronary pneumonia epidemic, according to claim 1, wherein the exhalation valve structure further comprises: the breathing valve seat, the elastic pressing ring and the breathing valve cover; the elastic pressing ring is pressed on the one-way valve II, and then the elastic pressing ring and the one-way valve II are arranged on the exhalation valve seat together and are covered by the exhalation valve cover.

3. The respiratory binary channels antifog formula new crown pneumonia epidemic situation protective facial mask of claim 2, characterized in that exhale the disk seat bottom for annular bottom surface structure, the structural annular card wall structure that is provided with in bottom surface, the circumference inner wall internal diameter of annular card wall structure is greater than the inner ring internal diameter of bottom surface structure makes the bottom surface structure is in the inside of annular card wall structure forms one and sets up to radial inside bellied annular saddle surface structure, the elasticity clamping ring is pressed and is established both are together set up behind one-way valve II annular saddle surface structure is last.

4. The respiratory two-channel anti-fog type new crown pneumonia epidemic situation protective facial mask according to claim 3, wherein a plurality of groups of supporting stop rods which are evenly distributed circumferentially are arranged on the inner wall of the bottom surface structure in the axial direction, and the upper end surfaces of the supporting stop rods and the upper end surface of the annular support surface structure are in the same height plane; a plurality of supporting stop levers are provided with a raised cylindrical fixing pin at the intersection, a fixing pin hole is formed in the one-way valve II, an annular clamping wall pressing ring is arranged on the inner wall of the annular clamping wall, and the one-way valve II is arranged on the plurality of supporting stop levers; the edge of the one-way valve II is pressed on the annular support surface structure, and the elastic pressing ring and the clamping wall pressing ring are sequentially pressed on the annular support surface structure.

5. The respiratory binary-channel anti-fog type neocoronary pneumonia epidemic prevention mask according to claim 4, wherein vent seams with the number equal to that of the support stop levers are uniformly distributed on the circumference of the one-way valve II; and the ventilation seam is formed at the initial position of the edge of the one-way valve II and forms a gap towards the middle of the one-way valve II along the radial direction, the one-way valve II has elastic deformation characteristic, and the ventilation seam is blocked by the support stop lever at the position corresponding to the support stop lever.

6. The respiratory binary-channel anti-fogging new crown pneumonia epidemic prevention mask according to claim 5, wherein rounded corners are designed at the sidelines on both sides of the upper end surface of the support stop lever.

7. The respiratory binary-channel anti-fog type new crown pneumonia epidemic situation protection mask according to claim 2, wherein the elastic pressing ring has elastic deformation characteristic and is provided with a notch.

8. The respiratory two-channel anti-fog type new crown pneumonia epidemic situation protective facial mask according to claim 3, characterized in that a convex clamping ring I with a semicircular annular convex section is arranged at the inner wall of the buckling edge of the exhalation valve cover, a convex clamping ring II with a semicircular outward convex section is correspondingly arranged at the outer wall of the upper port of the annular clamping wall, and a plurality of fan-shaped vacant sites with uniformly distributed circumference are arranged on the upper end surface of the exhalation valve cover.

9. The respiratory binary-channel anti-fog type new crown pneumonia epidemic situation protective facial mask according to claim 1, wherein a plurality of the supporting frameworks are not connected two by two.

10. The respiratory binary channels antifog formula new crown pneumonia epidemic situation protective facial mask of claim 1, characterized by, the whole thickness of breathing pipe piece with intermediate layer thickness is unanimous, the breathing pipe piece is L type trend, two the breathing pipe piece bilateral symmetry makes the upper end inlet scoop of two the breathing pipe piece all point to its glasses lens direction that corresponds the side respectively.

Images