Double-layer filtering protective mask

Abstract

The utility model relates to the technical field of masks, in particular to a double-layer filtering protective mask. In order to solve the problems that a breather valve of a mask cannot prevent spittle transmission in exhaled air of a wearer, the transmission risk is increased, and sufficient protection cannot be provided, the following technical scheme is provided: the mask comprises a mask body formed by welding two pieces of fabric, ear hooks welded on the fabric, and a breather valve for filtering air, the breather valve is mounted on the fabric through the mounting hole; filter cotton for filtering is mounted on the inner side of the fabric and is welded to the inner side of the mounting hole. According to the breathing valve, spittle can be prevented from being sprayed out when the breathing valve is used, the exhaled spittle can be effectively prevented from spreading, the risk of virus spreading is reduced, and effective protection is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of masks, in particular to a double-layer filtering protective mask. Background Art

[0002] A mask with a breathing valve can effectively filter particulate matter in the air when inhaling, and provide a comfortable breathing experience when exhaling, and discharge the carbon dioxide in the mask to reduce the wearer's discomfort. A mask with a breathing valve can only filter the air entering the mask, but cannot prevent the spread of droplets in the wearer's exhaled breath. Droplets containing viruses may be released during exhalation, thereby increasing the risk of transmission. In particular, for viruses that are transmitted through droplets, the use of ordinary masks with breathing valves may not provide adequate protection. In view of this, the utility model proposes a double-layer filtering protective mask. Utility Model Content

[0003] The utility model aims to propose a double-layer filtering protective mask to solve the problem that the breathing valve of the mask in the background technology cannot prevent the spread of droplets in the wearer's exhaled breath, increases the risk of transmission and cannot provide sufficient protection.

[0004] The technical solution of the utility model: a double-layer filtering protective mask, including a mask body welded from two pieces of fabric, and ear hooks welded to the fabric, and also including a breathing valve for filtering air, the breathing valve is installed on the fabric through a mounting hole, the breathing valve includes a valve body, a valve sheet, a protective cover, and air holes, the valve body is arranged in the mounting hole, the valve sheet is installed in the valve body, the protective cover is threadedly connected to the valve body, and a plurality of groups of air holes are equidistantly arranged on the protective cover; filter cotton for filtering is installed on the inner side of the fabric, and the filter cotton is welded to the inner side of the mounting hole.

[0005] Optionally, the valve body includes a mounting ring and an outer ring, multiple groups of the mounting rings are arranged in an arc shape, and multiple groups of the mounting rings are formed into a circular ring shape after splicing, the outer ring is fixedly connected to the side of the mounting ring away from the filter cotton, the mounting ring is arranged between the fabric and the filter cotton, and the outer ring of the outer ring is fitted with the edge of the mounting hole.

[0006] Optionally, the valve body also includes a support ring, a support rod, and a mounting column. The support ring is fixedly connected to the inner side of the outer ring, the V-shaped support rod is fixedly connected to the side of the support ring away from the outer ring, a group of the mounting columns are fixedly connected to the support ring through a group of support rods, and the valve plate is installed on the mounting column and has an interference fit therewith.

[0007] Optionally, the breathing valve further comprises a plurality of groups of limiting posts installed on a side of the mounting ring away from the filter cotton, a plurality of groups of limiting holes corresponding to the limiting posts are provided on the fabric, and the limiting posts are arranged through the limiting holes.

[0008] Optionally, the breathing valve also includes a positioning ring and a positioning hole, the positioning ring is arranged between the protective cover and the fabric, and multiple groups of positioning holes are distributed in a circular array on the positioning ring. The positions of the positioning holes correspond to the limiting columns, and the limiting columns pass through the limiting holes and enter into the positioning holes.

[0009] Optionally, a pressure ring is further installed on a side of the protective cover close to the positioning ring.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects:

[0011] The utility model provides filter cotton by welding the filter cotton in advance on the inner side of the installation hole to filter the gas exhaled by the wearer, which is comfortable to wear and prevents the spread of viruses.

[0012] Furthermore, through the split design of the valve body, multiple sets of mounting rings and outer rings are inserted in sequence between the filter cotton and the fabric, and the positions are fixed with the limit columns and limit holes, thereby completing the fixed installation of the breathing valve;

[0013] In summary, the utility model can prevent the spraying of droplets when using the breathing valve, can effectively prevent the spread of exhaled droplets, reduce the risk of virus transmission, and ensure effective protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional picture of a double-layer filtering protective mask;

[0015] Figure 2 yes Figure 1 A schematic diagram of a partial cross-sectional structure;

[0016] Figure 3 This is a schematic diagram of the disassembled structure of the breathing valve;

[0017] Figure 4 It is a schematic diagram of the disassembled structure of the valve body.

[0018] Reference numerals:

[0019] 1. Fabric; 11. Ear hook; 12. Mounting hole; 13. Limit hole;

[0020] 2. Breathing valve; 21. Valve body; 211. Mounting ring; 212. Outer ring; 213. Support ring; 214. Support rod; 215. Mounting column; 22. Valve plate; 23. Protective cover; 231. Pressing ring; 24. Air vent; 25. Limiting column; 26. Positioning ring; 27. Positioning hole;

[0021] 3. Filter cotton. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0024] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example

[0028] like Figure 1 , Figure 2 and Figure 4As shown, a double-layer filtering protective mask proposed by the utility model includes a mask body welded by two pieces of fabric 1, and an ear hook 11 welded to the fabric 1. It also includes a breathing valve 2 for filtering the air, and the breathing valve 2 is installed on the fabric 1 through a mounting hole 12, and the position of the breathing valve 2 is fixed. Filter cotton 3 for filtering is installed on the inner side of the fabric 1, and the filter cotton 3 is welded to the inner side of the mounting hole 12. The welding here refers to the welding of cloth, which is a common processing method, usually used to connect two or more pieces of cloth together through heat energy or pressure to form a whole. The filter cotton 3 is used for the wearer's exhaled gas to first pass through the filter cotton 3 and then be discharged through the breathing valve 2, so as to achieve the purpose of blocking the spray of droplets and prevent the spread of viruses.

[0029] For details, please refer to Figure 3 and Figure 4The breathing valve 2 in the above-mentioned mask includes a valve body 21, a valve sheet 22, a protective cover 23, and an air hole 24. The valve body 21 is arranged in the mounting hole 12, and the valve sheet 22 is installed in the valve body 21. The valve sheet 22 is made of rubber. When the wearer inhales, negative pressure is generated inside the mask body to prevent gas from entering through the position of the valve sheet 22. When the wearer exhales, the gas blows open the valve sheet 22 and is discharged from the position of the valve sheet 22. The protective cover 23 is threadedly connected to the valve body 21, so that after the protective cover 23 is connected to the valve body 21, the valve body 21 and the protective cover 23 are clamped on both sides of the fabric 1 to fix the position. The protective cover 23 also plays a protective role to prevent the internal valve sheet 22 from being damaged. Multiple groups of air holes 24 are equidistantly arranged on the protective cover 23, and the air holes 24 allow the protective cover 23 to be breathable while playing a protective role. The valve body 21 includes a mounting ring 211 and an outer ring 212. The three groups of mounting rings 211 are all arranged in an arc shape, and the three groups of mounting rings 211 are arranged in an annular shape after being spliced. The mounting ring 211 is arranged between the fabric 1 and the filter cotton 3. The outer ring 212 is fixedly connected to the side of the mounting ring 211 away from the filter cotton 3. The outer ring of the outer ring 212 fits the edge of the mounting hole 12. The three groups are arranged so that the mounting ring 211 and the outer ring 212 can enter between the filter cotton 3 and the fabric 1 through the mounting hole 12, so that the installation operation of the breathing valve 2 can be performed after the welding of the filter cotton 3 is completed. The valve body 21 also includes a support ring 213, a support rod 214, and a mounting column 215. The support ring 213 is fixedly connected to the inner side of the outer ring 212. The support rod 214 arranged in a V shape is fixedly connected to the side of the support ring 213 away from the outer ring 212. The support rod 214 is used to support the valve plate 22 as a whole. A set of mounting posts 215 are fixedly connected to the support ring 213 through a set of support rods 214. The valve plate 22 is mounted on the mounting posts 215 and has an interference fit therewith, so that the valve plate 22 is fixed in position after installation and is not easy to fall off, and is located at the center of the valve body 21. The breathing valve 2 also includes multiple groups of limiting posts 25 installed on the side of the mounting ring 211 away from the filter cotton 3. The fabric 1 is provided with multiple groups of limiting holes 13 corresponding to the limiting posts 25. The limiting posts 25 are arranged through the limiting holes 13. When the limiting posts 25 pass through the limiting holes 13, the position of the mounting ring 211 can be fixed, thereby preventing the position disorder between the three groups of mounting rings 211. The breathing valve 2 also includes a positioning ring 26 and a positioning hole 27. The positioning ring 26 is arranged between the protective cover 23 and the fabric 1. A plurality of positioning holes 27 are distributed in a circular array on the positioning ring 26. The position of the positioning hole 27 corresponds to the limiting column 25. The limiting column 25 passes through the limiting hole 13 and enters the positioning hole 27. The positioning ring 26 is used to cooperate with the limiting column 25 to further fix the position of the plurality of mounting rings 211 to prevent the mounting rings 211 from changing their positions after installation. A pressure ring 231 is also installed on the side of the protective cover 23 close to the positioning ring 26, so that when the protective cover 23 is threadedly connected to the valve body 21, the pressure ring 231 is driven close to the positioning ring 26, so that after tightening, the plurality of components are squeezed against each other, and the structure is stable.

[0030] In this embodiment, the filter cotton 3 is first welded to the inner side of the mounting hole 12. When installing the breathing valve 2, the three groups of mounting rings 211 are sequentially placed through the mounting hole 12 into the interlayer between the filter cotton 3 and the fabric 1. When the mounting ring 211 is placed between the fabric 1 and the filter cotton 3, the position of the mounting ring 211 is adjusted so that the limiting column 25 passes through the limiting hole 13. After the positions of the three groups of mounting rings 211 are determined, the valve plate 22 is installed on the mounting column 215. Then, the positioning hole 27 on the positioning ring 26 is aligned with the limiting column 25, so that the limiting column 25 passes through one end of the limiting hole 13 and enters the positioning hole 27. Finally, the protective cover 23 is threadedly connected to the valve body 21 and tightened. The pressure ring 231 simultaneously squeezes the positioning ring 26. At this time, the breathing valve 2 is firmly fixed on the fabric 1. When in use, the gas exhaled by the wearer first passes through the filter cotton 3 and then passes through the valve plate 22, further enhancing the protective effect.

[0031] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A double-layer filtering protective mask, comprising a mask body welded from two pieces of fabric (1), and ear hooks (11) welded to the fabric (1), characterized in that: Also includes: A breathing valve (2) for filtering air, the breathing valve (2) being mounted on a fabric (1) through a mounting hole (12), the breathing valve (2) comprising a valve body (21), a valve plate (22), a protective cover (23), and air holes (24), the valve body (21) being arranged in the mounting hole (12), the valve plate (22) being mounted in the valve body (21), the protective cover (23) being threadedly connected to the valve body (21), and a plurality of groups of air holes (24) being equidistantly arranged on the protective cover (23); Filter cotton (3) for filtering is installed on the inner side of the fabric (1), and the filter cotton (3) is welded to the inner side of the installation hole (12).

2. A double-layer filtering protective mask according to claim 1, characterized in that: The valve body (21) comprises a mounting ring (211) and an outer ring (212); multiple groups of the mounting rings (211) are all arranged in an arc shape, and multiple groups of the mounting rings (211) are spliced ​​together to form a circular ring shape; the outer ring (212) is fixedly connected to a side of the mounting ring (211) away from the filter cotton (3); the mounting ring (211) is arranged between the fabric (1) and the filter cotton (3); and the outer ring of the outer ring (212) is in contact with the edge of the mounting hole (12).

3. A double-layer filtering protective mask according to claim 2, characterized in that: The valve body (21) further comprises a support ring (213), a support rod (214), and a mounting column (215); the support ring (213) is fixedly connected to the inner side of the outer ring (212); the support rod (214) is V-shaped and fixedly connected to the side of the support ring (213) away from the outer ring (212); a group of mounting columns (215) are fixedly connected to the support ring (213) via a group of support rods (214); and the valve plate (22) is mounted on the mounting columns (215) and is interference fit therewith.

4. A double-layer filtering protective mask according to claim 2, characterized in that: The breathing valve (2) further comprises a plurality of groups of limiting posts (25) mounted on a side of the mounting ring (211) away from the filter cotton (3); a plurality of groups of limiting holes (13) corresponding to the limiting posts (25) are provided on the fabric (1); and the limiting posts (25) are arranged to penetrate through the limiting holes (13).

5. A double-layer filtering protective mask according to claim 4, characterized in that: The breathing valve (2) further comprises a positioning ring (26) and a positioning hole (27); the positioning ring (26) is arranged between the protective cover (23) and the fabric (1); a plurality of groups of positioning holes (27) are distributed in a circular array on the positioning ring (26); the positions of the positioning holes (27) correspond to the limiting columns (25); the limiting columns (25) pass through the limiting holes (13) and enter into the positioning holes (27).

6. A double-layer filtering protective mask according to claim 5, characterized in that: A pressure ring (231) is also installed on one side of the protective cover (23) close to the positioning ring (26).

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