CN212787531U - Mask - Google Patents

Abstract

The utility model provides a mask, built-in diversion layer can shorten the propagation distance of pathogen in the person's of wearing exhalation air current. Specifically, the mask comprises a mask body, a fixing part and a clamping part; the mask main body is provided with a turning layer; the diversion layer is provided with an airflow inlet and outlet hole which is inclined downwards based on the inner surface of the diversion layer to form an included angle, so that airflow flows downwards through the airflow inlet and outlet hole. The utility model discloses an adjust the flow direction of exhalation air current, make exhalation air current flow towards the person's of wearing front lower place, and then shorten propagation distance, and the cost of manufacture is low, and the protecting effect is good, has the significance to the prevention of respiratory infectious disease. Furthermore, part of the airflow enters and exits the bottom of the hole to form a blind end, and the blind end can also be used for enriching pathogens in the airflow to carry out sample detection.

Description

Mask

Technical Field

The utility model relates to a mask belongs to the respiratory protection field.

Background

The mask is a sanitary article, and is generally worn on the mouth and nose for filtering air entering the mouth and nose so as to achieve the effect of blocking harmful gas, smell, spray, virus and other substances.

The common gauze mask at present:

the medical surgical mask meets the related requirements of medical industry standard YY0469-2011 medical surgical mask technical requirement, and is suitable for being worn by clinical medical staff in invasive operation and other processes. Used for covering the mouth, nose and jaw of the wearer and providing physical guarantee for preventing pathogenic microorganisms, body fluid, particulate matters and the like from directly permeating. The filtering efficiency of the mask to non-oily particles generally reaches more than 30%, and the filtering efficiency to bacteria reaches more than 95%. Masks are generally divided into three layers: the water-absorbing layer inside, the filtering layer in the middle and the waterproof layer outside, each of which has special function. Medical surgery gauze mask protecting effect is good, the cost of manufacture is low, nevertheless can not adjust the air current direction, and when the person of wearing exhales, the air current can hardly smoothly discharge, and the air current of exhalation also can flow forward, has certain propagation distance.

The breather valve mask discharges gas by using a breather valve. The positive pressure of the exhaust gas blows the valve plate open during expiration to rapidly remove the waste gas in the body, and the negative pressure during inspiration can automatically close the valve to avoid absorbing the pollutants in the external environment. However, the breather valve does not pass through the filter material, and the gas exhaled by the wearer is directly exhausted into the surrounding environment without being filtered. Thus, a breathing valve port cover is typically a one-way shield that only protects the wearer and not the surrounding population. Although the breather valve port cover can adjust the airflow direction, the breather valve port cover cannot filter exhaled air, is not suitable for the medical industry, and has high manufacturing cost.

Therefore, the mask has the disadvantages of long transmission distance, poor protection effect and high manufacturing cost, and is a pain point which cannot be treated compatibly by the existing mask. If the problems can be solved, the protective effect of the mask can be greatly improved, respiratory infectious diseases can be better prevented, and the mask has extremely important significance for human medical health care.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a gauze mask. The specific technical scheme is as follows:

a mask comprises a mask main body, a fixing part and a clamping part; the fixed part is connected with the mask main body and is used for keeping the mask main body on the head of a wearer; the clamping part is positioned at the upper end part of the mask main body and is used for clamping the upper end part of the mask main body on the nose of a wearer; the mask main body comprises a multilayer structure, and the multilayer structure comprises a turning layer; the diversion layer includes a plurality of air current business turn over holes, the air current business turn over hole is based on diversion layer internal surface downward sloping forms the contained angle, makes the air current pass through air current business turn over hole flows towards the below, the contained angle is greater than 5 and is less than 90.

Furthermore, the position of the turning layer comprises the outer surface of the mask body or the inner surface of the mask body.

Further, the mask body comprises an inner layer, an outer layer, a turning layer and at least one filter core layer positioned between the inner layer and the outer layer; the position of the turning layer comprises the position between the outer layer and the filter core layer or the position between the filter core layer and the inner layer.

In particular, the mask body comprises at least two of the filter layers; the position of the turning layer also comprises the position between the filter core layer and the filter core layer.

In particular, the inner layer comprises a nonwoven fabric; and/or the outer layer comprises a nonwoven fabric; and/or the filter core layer comprises meltblown cloth. Non-woven fabrics and melt-blown fabric are the most common and effectual protective facial mask's material, the utility model discloses a protective effect of gauze mask can be guaranteed to non-woven fabrics and melt-blown fabric.

Further, the included angles are all the same, so that the air flows downwards along the same angle through the air flow inlet and outlet holes; or the included angles are not completely the same, so that the airflow flows downwards along different angles through the airflow inlet and outlet holes.

Particularly, the included angle of the airflow inlet and outlet hole at the lower side part of the turning layer is smaller than the included angle of the airflow inlet and outlet hole at the upper side part of the turning layer. The lower side part of the turning layer is a main gathering area of respiratory airflow, and the included angle of the airflow inlet and outlet holes in the area is reduced, so that the propagation distance can be better shortened.

Furthermore, the distribution density of the airflow inlet and outlet holes on the direction-changing layer is different, or the distribution density of the airflow inlet and outlet holes on the direction-changing layer is the same.

Particularly, the distribution density of the airflow inlet and outlet holes at the lower side part of the turning layer is greater than that of the airflow inlet and outlet holes at the upper side part of the turning layer. The lower side part of the turning layer is a main gathering area of the respiratory airflow, and the distribution density of airflow inlet and outlet holes in the area is increased, so that smooth respiration can be kept.

Furthermore, a part of the airflow inlet and outlet holes are closed at the bottom to form a blind end. The blind end can collect bacteria, viruses and the like in the exhaled air flow, and the bacteria, viruses and the like can be used for detecting the breath sample after being processed.

The utility model discloses following beneficial effect has at least:

compared with the prior art, the utility model discloses on the basis of guaranteeing gauze mask protecting effect, adjust the air current flow direction through the diversion layer, make the air current flow towards the person's of wearing front lower place, and then shorten the propagation distance of pathogen in the air current. The mask has good protection effect, can shorten the propagation distance, has low manufacturing cost and makes up the defects of the prior art.

Furthermore, part of the airflow in and out of the hole is sealed to form a blind end, and the air flow collecting device can be used for enriching pathogens in exhaled airflow, collecting and detecting a respiratory sample of a wearer, and has important significance for detecting and preventing respiratory infectious diseases.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the mask effect;

fig. 2 is an exploded view of the main structure of the mask;

FIG. 3 is a side view of a direction-changing layer structure of the mask;

FIG. 4 is a front view of a mask turning layer;

FIG. 5 is a view of the structure of the hole;

FIG. 6 is a diagram showing the filtering effect of the mask;

FIG. 7 is a view showing the effect of the mask on directing the airflow;

FIG. 8 is a blind end structure view;

FIG. 9 is a diagram illustrating the effect of uneven distribution of airflow in and out of the holes;

FIG. 10 is a graph illustrating the effect of different angles of air flow into and out of the holes.

Reference numerals:

the mask comprises a mask body 1, a fixing part 2, a clamping part 3, an outer layer 4, a turning layer 5, a filter core layer 6, an inner layer 7, holes 5-1, blind ends 5-2, suspended matters 8-1 with large particle size and suspended matters 8-2 with small particle size.

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 fall within the protection scope of the present invention.

The utility model provides a mask according to the not enough of prior art. Specifically, the mask comprises a mask body 1, a fixing part 2 and a clamping part 3, as shown in the attached figure 1 of the specification. The fixing part 2 is connected with the mask main body 1 and is used for attaching the mask main body 1 to the face of a wearer and keeping the mask main body 1 on the head of the wearer; the clamping part 3 is positioned at the upper end part of the mask main body 1 and is used for clamping the upper end part of the mask main body 1 at the nose of a wearer so as to realize better sealing effect; the mask main body 1 is of a multilayer structure, and the multilayer structure comprises a turning layer 5; the turning layer 5 is provided with a plurality of airflow inlet and outlet holes 5-1, the airflow inlet and outlet holes 5-1 are inclined downwards based on the inner surface of the turning layer 5 to form an included angle, airflow flows downwards through the airflow inlet and outlet holes 5-1, and the included angle is larger than 5 degrees and smaller than 90 degrees.

Specifically, the fixing part 2 is connected with the mask body 1, and the selected material comprises an elastic flexible material. Preferably, the fixing part 2 is in the form of ear-hanging and is located on both sides of the mask body 1, as shown in fig. 1. When the mask is used, the fixing parts 2 on the two sides of the mask main body 1 are hung on the ears of a wearer, and the mask main body 1 is tightly attached to the face of the wearer to achieve the effect of keeping.

Specifically, the clip portion 3 is located near the upper end of the mask body 1. Preferably, as shown in fig. 1 of the specification, the holding portion 3 is a metal soft strip at the upper end of the mask body 1 and is attached to the nose of the wearer. When the sealing device is used, the clamping part 3 is kneaded, so that the clamping part 3 deforms and is tightly attached to the nose of a wearer, and a better sealing effect is achieved.

Preferably, the mask body 1 comprises an inner layer 7, an outer layer 4 and a direction changing layer 5, and further comprises at least one filter core layer 6 positioned between the inner layer 7 and the outer layer 4, as shown in figure 2 of the specification.

Furthermore, the material of the outer layer 4 is preferably non-woven fabric which is mainly used for isolating large-particle-size suspended matters 8-1 such as external spray, dust and the like. The air current gets into the oral cavity cover, and the suspended solid of great particle diameter is along with the air current motion, collides with the inside fibre of non-woven fabrics under the inertial action, is held back to in the non-woven fabrics by mechanical screening effect, reaches the filter effect.

Further, the inner layer 7 is preferably made of non-woven fabric, and is mainly used for isolating droplets generated when a wearer exhales. When the wearer exhales, the spray moves along with the air flow, collides with fibers inside the non-woven fabric, and is intercepted in the non-woven fabric under the mechanical screening effect, so that the filtering effect is achieved.

Furthermore, the material of the filter core layer 6 is preferably melt-blown cloth, and is mainly used for isolating small-particle-size suspended matters 8-2 such as bacteria, viruses and the like. The filter core layer 6 is positioned between the inner layer 7 and the outer layer 4 of the mask body 1, and the filter core layer 6 is at least one layer. In particular, one filter core layer 6 is selected for convenience of description. The melt-blown cloth takes polypropylene as a main raw material, the fiber diameter can reach 0.5-10 microns, and the superfine fibers with unique capillary structures increase the number and the surface area of the fibers per unit area, so that the melt-blown cloth has good air filtration property. When a wearer inhales, airflow enters the filter core layer 6 after being filtered by the outer layer 4, and small particle size suspended matters 8-2 such as viruses and bacteria are adsorbed on the surface of the fiber under the action of static electricity after being close to the melt-blown cloth, so that the effect of blocking filtration is achieved; when a wearer exhales, the airflow enters the filter core layer 6 after being filtered by the inner layer 7, and small particle size suspended matters 8-2 such as viruses and bacteria carried in the exhaled airflow are close to the melt-blown cloth and adsorbed on the surface of the fiber under the electrostatic action, so that the filtering effect is achieved.

Furthermore, the turning layer 5 comprises a solid protective layer, the material can be plastic film, tinfoil, cloth or paper material, and the like, and the manufacturing cost is low. Specifically, a large number of airflow inlet and outlet holes 5-1 are distributed on the direction changing layer 5 and used for adjusting the airflow direction and enabling the airflow to flow towards the front lower part of a wearer, so that the propagation distance of pathogens in the airflow is shortened, and the sectional structure of the direction changing layer 5 is shown in the attached figure 3 in the specification. Preferably, the airflow holes 5-1 are uniformly distributed on the turning layer 5, as shown in fig. 4 in the specification, the distribution density of the airflow holes 5-1 is controlled to be 4-2000/square centimeter, and the existence of a large number of airflow holes 5-1 can ensure that a wearer can breathe smoothly. The airflow inlet and outlet hole 5-1 is inclined downwards based on the inner surface of the turning layer to form an included angle which is larger than 5 degrees and smaller than 90 degrees, so that airflow flows downwards through the hole 5-1, and the structure is shown in the attached figure 5 in the specification. Preferably, all the air flow inlet and outlet holes 5-1 have the same angle, so as to ensure that the air flows in the same direction. The position where the direction changing layer 5 can be arranged comprises the inner surface of the mask main body 1, or the outer surface of the mask main body 1, or between the outer layer 4 and the filter core layer 6, or between the inner layer 7 and the filter core layer 6; when the filter core layer 6 has at least two layers, the direction changing layer 5 can also be positioned between the two filter core layers 6. Preferably, the filter core layer 6 comprises one layer, and the direction changing layer 5 is located between the outer layer 4 and the filter core layer 6, as shown in fig. 2 of the specification.

In specific application, the mask body 1 is kept on the head of a wearer through the fixing part 2, and the clamping part 3 is pinched to achieve a better sealing effect. When the wearer inhales, the filtering process of the mask is shown in the specification and the attached figure 6. Airflow firstly passes through the outer layer 4, and large-particle-size suspended matters 8-1 such as dust, spray and the like are blocked and filtered by fibers in the filter material; then, the airflow enters the direction changing layer 5, a large number of holes 5-1 are distributed on the direction changing layer 5, so that a wearer can breathe smoothly, and the direction changing layer 5 can further filter suspended matters 8-1 with large particle size to a certain extent; then, the air flow enters a filter core layer 6, the filter core layer 6 is a main filter material, and when small-particle-size suspended matters 8-2 such as bacteria and viruses are close to the filter core layer 6, the suspended matters are adsorbed into the filter material under the action of static electricity; finally, the airflow enters the wearer's respiratory system via the inner layer 7. When the wearer exhales, the mask airflow is directed as described in the specification and shown in fig. 7. The airflow firstly passes through the inner layer 7, and the droplets and the like in the exhaled airflow are absorbed by the filter material of the inner layer 7; then, the airflow enters the filter core layer 6, and when small particle size suspended matters 8-2 such as bacteria, viruses and the like in the exhaled airflow are close to the filter core layer 6, the suspended matters are adsorbed into the filter material under the electrostatic action; then, the airflow enters the direction changing layer 5 and flows out towards the front lower part of the wearer after passing through the outer layer 4 under the guidance of the holes 5-1.

The utility model discloses on current protective facial mask's basis, diversion layer 5 has been increased. Turning layer 5 is slim and graceful portable, and the material cost of manufacture is low, not only can guarantee the safeguard effect of gauze mask, can adjust the direction of exhaling the air current moreover, makes the air current flow towards the person's of wearing front lower place to shorten the propagation distance of pathogen in the exhaling air current, the prevention to respiratory infectious disease has the significance. Therefore, the utility model provides a not enough of prior art, can guarantee the protecting effect of gauze mask, can shorten propagation distance again.

In another embodiment, a portion of the flow direction changing layer 5 is closed at the bottom of the air inlet and outlet holes 5-1 to form a blind end 5-2. The closed surface of the blind end 5-2 is positioned outside the direction changing layer 5, and the specific structure is shown in the attached figure 8 in the specification. Preferably, the blind end 5-2 is located in the middle region of the direction-changing layer 5. The blind end 5-2 is mainly used for collecting a breath sample when a wearer exhales, and is convenient for sampling and detection. During exhalation, unfiltered bacteria, viruses, etc. in the air stream are collected at the blind end 5-2. The breath sample in the blind end 5-2 can be used for detection, and the breath sample of the wearer can be collected for virus detection after the blind end 5-2 is added with a solution for cleaning or dissolving. The not enough of prior art has been solved to this embodiment, has both guaranteed the safeguard effect of gauze mask, can adjust the air current direction again, shortens propagation distance, can gather the person's of wearing breath sample simultaneously, conveniently detects, has the significance to the prevention and the detection of respiratory infectious disease.

In another embodiment, the holes 5-1 in the redirecting layer 5 are not evenly distributed. Specifically, the distribution density of the airflow inlet and outlet holes 5-1 at the lower side of the turning layer 5 is greater than that of the airflow inlet and outlet holes 5-1 at the upper side of the turning layer 5, as shown in fig. 9 in the specification. The lower side part of the turning layer 5 is an area where air flow enters and exits more intensively when a wearer breathes, and the air flow inlet and outlet holes 5-1 in the area are distributed densely, so that smooth air flow can be ensured, and materials are saved.

In another embodiment the holes 5-1 in the redirecting layer 5 are inclined at different angles. Specifically, the angle of the airflow inlet and outlet hole 5-1 at the lower side of the turning layer 5 is smaller than the angle of the airflow inlet and outlet hole 5-1 at the upper side of the turning layer 5, as shown in the attached fig. 10 of the specification. The lower side part of the turning layer 5 is a main airflow gathering area, so that the included angle of airflow in and out of the hole 5-1 in the area is reduced, the main airflow can flow downwards, and the propagation distance of pathogens is shortened better.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A mask, characterized in that: comprises a mask body, a fixing part and a clamping part; the fixed part is connected with the mask main body and is used for keeping the mask main body on the head of a wearer; the clamping part is positioned at the upper end part of the mask main body and is used for clamping the upper end part of the mask main body on the nose of a wearer;

the mask main body comprises a multilayer structure, and the multilayer structure comprises a turning layer;

the diversion layer includes a plurality of air current business turn over holes, the air current business turn over hole is based on diversion layer internal surface downward sloping forms the contained angle, makes the air current pass through air current business turn over hole flows towards the below, the contained angle is greater than 5 and is less than 90.

2. The mask of claim 1 wherein: the position of the turning layer comprises the outer surface of the mask body or the inner surface of the mask body.

3. The mask of claim 1 wherein: the mask body comprises an inner layer, an outer layer, a turning layer and at least one filter core layer positioned between the inner layer and the outer layer;

the position of the turning layer comprises the position between the outer layer and the filter core layer or the position between the filter core layer and the inner layer.

4. The mask of claim 3 wherein: the mask body comprises at least two filter layers; the position of the turning layer also comprises the position between the filter core layer and the filter core layer.

5. The mask of claim 3 wherein: the inner layer comprises non-woven fabric;

and/or the outer layer comprises a nonwoven fabric;

and/or the filter core layer comprises meltblown cloth.

6. The mask of claim 1 wherein: the included angles are all the same, so that the air flows downwards along the same angle through the air flow inlet and outlet holes;

or the included angles are not completely the same, so that the airflow flows downwards along different angles through the airflow inlet and outlet holes.

7. The mask of claim 6 wherein: the included angle of the airflow access hole positioned on the lower side part of the turning layer is smaller than the included angle of the airflow access hole positioned on the upper side part of the turning layer.

8. The mask of claim 1 wherein: the distribution density of the airflow inlet and outlet holes on the direction-changing layer is different;

or the distribution density of the airflow inlet and outlet holes on the direction-changing layer is the same.

9. The mask of claim 8 wherein: the distribution density of the airflow inlet and outlet holes at the lower side part of the turning layer is greater than that at the upper side part of the turning layer.

10. The mask of claim 1 wherein: and part of the airflow inlet and outlet holes are closed at the bottom to form a blind end.

Images