Three-layer filtering protection structure of mask

Abstract

The utility model discloses a three-layer filtering protection structure of a mask, and relates to the technical field of hygiene and epidemic prevention products. The mask comprises a mask body, ear hanging ropes, an inner layer and an outer layer, the outer layer is arranged on the outer side of the mask body, the inner layer is arranged on the inner side of the mask body, and the ear hanging ropes are installed at the two ends of the mask body. Polyacrylonitrile fibers are arranged in the inner layer, and non-woven fabrics are arranged in the outer layer; a replacement assembly is arranged in the mask body and composed of a dismounting part and a replacement part, the dismounting part and the replacement part are the same in structure, and the filtering layer is formed by compounding polyimide fibers and activated carbon fibers. The filter layer on the mask can be replaced by the replacement component, the effects of repeated use and environmental protection are achieved while the filter performance is guaranteed, the inner layer made of polyacrylonitrile fibers and the filter layer formed by compounding activated carbon fibers and polyimide fibers are utilized, the water absorption and dehumidification performance of the mask body is improved, and the filter effect is improved. The filtering and anti-static effects are also improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sanitary and epidemic prevention products, and particularly relates to a three-layer filtering and protective structure of a mask. Background Art

[0002] The most common and most important product among sanitary and epidemic prevention supplies is the mask. A mask is generally worn on the mouth and nose to filter the air entering the mouth and nose in order to block harmful gases, odors, droplets, viruses and other substances. It is made of gauze or paper and other materials. The mask is mainly composed of two parts: a protective sheet and an ear rope. The ear rope is used to hang the protective sheet on the user's mouth and nose, and the protective sheet is used to cover the user's mouth and nose, so that the gas breathed by the user is filtered through the protective sheet.

[0003] A Chinese patent application (or patent) with publication number CN220476967U discloses a touch-sensitive filter-replaceable mask, comprising a base layer, a surface layer with a detachable structure fixedly mounted on the outer surface of the base layer, and a touch-sensitive function module fixedly mounted on one side of the surface layer, and air inlets fixedly arranged on the outer walls on both sides of the surface layer, and a replaceable filter installed inside the air inlet. The beneficial effects of the utility model are as follows: the filter can be quickly disassembled and replaced by installing the fixed ring on the inner tube on the air inlet, so as to achieve the purpose of reusing the mask. At the same time, the touch-sensitive function module adopted can make people have good call voice quality when wearing the mask, and the mask has its own touch-sensitive function. Through the control of Bluetooth, the phone can be quickly connected and the music can be switched without turning on the mobile phone. Reminder functions such as wearing a mask when going out and washing hands when returning home can be set, so that people can wear the mask more consciously and safely.

[0004] The above-mentioned touch-sensitive filter-replaceable mask has a base layer of three layers of polypropylene non-woven fabrics stacked on top of each other. The three layers of polypropylene non-woven fabrics can certainly have a filtering effect, but they can only filter fine dust particles in the air and cannot filter viruses and bacteria in the gas environment; and a surface layer is also added to the inner side of the base layer, and air inlets and filter nets are provided at both ends of the bottom of the surface layer. However, when the user breathes, most of the air intake and air outflow are carried out through the base layer, and when the user inhales, the air inlet and filter net in the surface layer will directly cause the air inlet to close due to the existence of suction, and then the filter net embedded in the air inlet will lose its filtering effect. To this end, we provide a three-layer filtering protection structure of a mask to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a three-layer filtering protection structure of a mask. The filter layer on the mask can be replaced by using a replacement component, thereby ensuring the filtering performance while also achieving the effects of multiple uses and environmental protection. By using an inner layer made of polyacrylonitrile fiber and a filter layer composed of activated carbon fiber and polyimide fiber, not only the water absorption and dehumidification performance of the mask body is improved, but also the filtering and anti-static effects are improved, thereby solving the problems of the existing touch-controlled filter-replaceable mask.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a three-layer filtering protection structure of a mask, comprising a mask body, an ear-hanging rope, an inner layer and an outer layer, wherein the outer side of the mask body is provided with the outer layer, the inner side of the mask body is provided with the inner layer, and the two ends of the mask body are provided with ear-hanging ropes; the inner layer is provided with polyacrylonitrile fiber, and the outer layer is provided with non-woven fabric;

[0008] A replacement component is provided inside the mask body, and the replacement component consists of a disassembly part and a replacement part. The disassembly part and the replacement part have the same structure. The disassembly part includes a rotating rod and a limiting rod sleeve connected on both ends thereof. A filter layer is also wrapped on the middle outer wall of the rotating rod, and a Velcro is bonded to the outer wall of one end of the filter layer. The filter layer is composed of a composite of polyimide fiber and activated carbon fiber.

[0009] The utility model is further configured that a rear groove is opened on the rear side of the mask body, and a front groove is opened on the front side of the mask body, the mask body is connected to the inner layer through the rear groove, and the mask body is connected to the outer layer through the front groove.

[0010] The utility model is further configured that the inner layer and the outer layer are arranged on both sides of the mask body, and the inner layer and the outer layer are arranged symmetrically with each other, and the thickness of the inner layer is less than the thickness of the outer layer.

[0011] The utility model is further configured that two ear hanging ropes are provided, and the two ear hanging ropes are respectively arranged on both sides of the mask body, the two ends of the ear hanging ropes are connected to the connecting rings, and the connecting rings are bonded to the outer walls of both sides of the mask body.

[0012] The utility model is further configured that a through groove is provided on the mask body at a position for accommodating and installing a replacement component, round rod grooves are provided at upper and lower ends of the through groove on the mask body, and expansion grooves are provided at both ends of the round rod groove.

[0013] The utility model is further configured such that the mask body is arranged with a gap between the outer wall of the rotating rod in the replacement assembly through the round rod groove, and the mask body is clamped with the outer wall of the limiting rod sleeve through the expansion groove.

[0014] The utility model is further configured such that the disassembly part and the replacement part in the replacement assembly are arranged on upper and lower sides of the penetration groove in the mask body, and the disassembly part and the replacement part are arranged symmetrically up and down.

[0015] The utility model is further configured such that one end of the filter layer in the replacement component is bonded to the outer wall of the rotating rod, one end of the filter layer is bonded to the sub-sticker in the Velcro, and the mother sticker in the Velcro is bonded to the inner wall of the penetration groove in the mask body.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model provides a replacement component, wherein a replacement component is provided in the filter layer thereon, and the replacement component consists of a replacement part and a disassembly part. The replacement part is used to install a new filter layer onto the mask body, and the disassembly part is used to remove the used filter layer from the mask body, so that one mask can be used multiple times, and its filtering effect is still effective, and the flat filter layer can better shield and protect the user's mouth and nose.

[0018] 2. The utility model is provided with an outer layer, a filter layer and an inner layer. The outer layer is composed of a hydrophobic non-woven fabric, and the filter layer is composed of a composite of activated carbon fiber and polyimide fiber. It not only has extremely high filtering performance and can filter out harmful substances in the gas environment, but also has an anti-static effect. The inner layer is composed of polyacrylonitrile fiber. The polyacrylonitrile fiber not only has extremely high hydrophilicity and can better absorb the water vapor exhaled by the user, but also has an extremely strong dehumidification speed. Therefore, when not in use, most of the moisture and water droplets on the inner layer of the mask can be removed by taking off the mask and shaking it quickly.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a three-layer filtering protection structure of a mask.

[0022] Figure 2 This is a structural cross-sectional view of a three-layer filtering protection structure of a mask.

[0023] Figure 3 This is a structural disassembly diagram of a mask with a three-layer filtering protection structure.

[0024] Figure 4 This is a structural disassembly diagram of the mask body.

[0025] Figure 5 This is a half-section diagram of the filter layer structure.

[0026] Figure 6 This is a disassembled diagram of the structure of the replacement component.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1-mask body, 101-rear slot, 102-front slot, 103-round rod slot, 103a-expansion slot, 2-ear hanging rope, 201-connecting ring, 3-replacement component, 301-disassembly part, 301a-rotating rod, 301b-limiting rod sleeve, 302-replacement part, 303-filter layer, 303a-polyimide fiber, 303b-activated carbon fiber, 304-Velcro, 4-inner layer, 401-polyacrylonitrile fiber, 5-outer layer, 501-non-woven fabric. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0031] See also Figure 1-4 The utility model is a three-layer filtering protection structure of a mask, including a mask body 1, and an outer layer 5 is arranged on the outer side of the mask body 1, and an inner layer 4 is arranged on the inner layer, wherein the inner layer 4 is composed of polyacrylonitrile fiber 401, and the outer layer 5 is composed of non-woven fabric, so that the inner layer 4 not only has extremely high hydrophilicity and can better absorb the water vapor exhaled by the user, but also has an extremely strong dehumidification speed.

[0032] Specifically, a rear groove 101 for assembling the inner layer 4 is opened on the rear side of the mask body 1, and a front groove 102 for assembling the outer layer 5 is opened on the front side, wherein the inner layer 4 is composed of polyacrylonitrile fiber 401, and the outer layer 5 is composed of non-woven fabric, and connecting rings 201 are bonded to the upper and lower sides of the left and right ends of the mask body 1, and the mask body 1 is connected to the ear hanging rope 2 through the connecting ring 201.

[0033] Furthermore, round rod grooves 103 are formed at the upper and lower ends of the interior of the mask body 1 , and expansion grooves 103 a are formed at both ends of the round rod groove 103 .

[0034] The operation process of this embodiment is: take out the mask body 1, tie the ear rope 2 to the connecting ring 201, and then face one side of the inner layer 4 toward the user's face and fit it on the user's face, pull the ear rope 2 again and hang it on the user's ear to complete the wearing of the mask. Specific embodiment 2

[0036] See also Figure 5-6 On the basis of the specific embodiment 1, a replacement component 3 is also provided. The replacement component 3 consists of a disassembly part 301 and a replacement part 302, and a filter layer 303 is provided in the disassembly part 301 and the replacement part 302. By alternately using the disassembly part 301 and the replacement part 302, the use time of the mask can be increased, and the flat filter layer 303 can better shield and protect the patient's mouth and nose.

[0037] Specifically, the disassembly part 301 in the replacement component 3 includes a rotating rod 301a and a limiting rod sleeve 301b sleeved on both ends thereof, and a filter layer 303 is wrapped around the middle outer wall of the rotating rod 301a, and the outer wall of the filter layer 303 is bonded to the inner wall of the mask body 1 through Velcro 304. At the same time, the filter layer 303 is composed of a composite of polyimide fiber 303a and activated carbon limiting 303b.

[0038] Furthermore, the structures of the disassembly part 301 and the replacement part 302 are the same, wherein only one of the disassembly part 301 and the replacement part 302 is in the expanded working state, and the difference between the disassembly part 301 and the replacement part 302 is only whether the filter layer 303 in the disassembly part 301 is in the expanded state, wherein the filter layer 303 is in the expanded state, that is, the disassembly part 301, and the filter layer 303 is in the closed and rolled state, that is, the replacement part 302.

[0039] The operation process of this embodiment is: when the filter layer 303 in the mask body 1 needs to be replaced, the rotating rod 301a on the disassembly part 301 is held, and then the limiting sleeve 301b is pressed down to make the limiting sleeve 301b disengage from the expansion groove 103a. At that time, the rotating rod 301a also disengages from the round rod groove 103, and then the rotating rod 301 is rotated to make the filter layer 303 bonded to the outer wall of the rotating rod 301 roll up, and after the rolling is completed, it is placed inside the mask body 1, and then the limiting rod sleeve 301b in the replacement part 302 is held, and the above steps are reversed. Finally, the filter layer 303 on the replacement part 302 is bonded to the Velcro 304.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A three-layer filtering protection structure of a mask, comprising a mask body (1), an ear hanging rope (2), an inner layer (4) and an outer layer (5), wherein the outer side of the mask body (1) is provided with the outer layer (5), and the inner side of the mask body (1) is provided with the inner layer (4), and the ear hanging ropes (2) are installed at both ends of the mask body (1); characterized in that: The inner layer (4) is provided with polyacrylonitrile fibers (401), and the outer layer (5) is provided with non-woven fabric (501); A replacement component (3) is arranged inside the mask body (1), and the replacement component (3) is composed of a disassembly component (301) and a replacement component (302). The disassembly component (301) and the replacement component (302) have the same structure. The disassembly component (301) comprises a rotating rod (301a) and a limiting rod sleeve (301b) sleeved on both ends of the rotating rod (301a). A filter layer (303) is also wound on the outer wall of the middle part of the rotating rod (301a), and a Velcro (304) is adhered to the outer wall of one end of the filter layer (303). The filter layer (303) is composed of a composite of polyimide fiber (303a) and activated carbon fiber (303b).

2. A three-layer filtering and protective structure of a mask according to claim 1, characterized in that: The rear side of the mask body (1) is provided with a rear groove (101), and the front side of the mask body (1) is provided with a front groove (102); the mask body (1) is connected to the inner layer (4) via the rear groove (101), and the mask body (1) is connected to the outer layer (5) via the front groove (102).

3. A three-layer filtering and protective structure of a mask according to claim 2, characterized in that: The inner layer (4) and the outer layer (5) are arranged on both sides of the mask body (1), and the inner layer (4) and the outer layer (5) are arranged symmetrically with each other. The thickness of the inner layer (4) is smaller than the thickness of the outer layer (5).

4. A three-layer filtering and protective structure of a mask according to claim 1, characterized in that: There are two ear-hanging ropes (2) in total, and the two ear-hanging ropes (2) are arranged on both sides of the mask body (1), and the two ends of the ear-hanging ropes (2) are connected to the connecting ring (201), and the connecting ring (201) is bonded to the outer walls of both sides of the mask body (1).

5. A three-layer filtering and protective structure of a mask according to claim 1, characterized in that: A through groove is provided on the mask body (1) at a position for accommodating and installing a replacement assembly (3); round rod grooves (103) are provided at the upper and lower ends of the through groove on the mask body (1); and expansion grooves (103a) are provided at both ends of the round rod groove (103).

6. A three-layer filtering and protective structure of a mask according to claim 5, characterized in that: The mask body (1) is arranged in a gap between the round rod groove (103) and the outer wall of the rotating rod (301a) in the replacement component (3), and the mask body (1) is clamped with the outer wall of the limiting rod sleeve (301b) through the expansion groove (103a).

7. A three-layer filtering and protective structure of a mask according to claim 1, characterized in that: The disassembly component (301) and the replacement component (302) in the replacement assembly (3) are arranged on the upper and lower sides of the penetration groove in the mask body (1), and the disassembly component (301) and the replacement component (302) are arranged symmetrically up and down.

8. A three-layer filtering and protective structure of a mask according to claim 7, characterized in that: One end of the filter layer (303) in the replacement component (3) is bonded to the outer wall of the rotating rod (301a), one end of the filter layer (303) is bonded to the sub-sticker in the Velcro (304), and the main sticker in the Velcro (304) is bonded to the inner wall of the penetration groove in the mask body (1).

Images