Mask with replaceable filter screen

Abstract

The mask with the replaceable filter screen comprises a mask body and a filter mechanism, ear belts are arranged on the two sides of the mask body, and a nose bridge pad is arranged at the top of the mask body; when the mask is used, the filter screen is placed in the fixing ring in a flush mode, then the two pairs of elastic buckles on the fixing shell are clamped in the two pairs of positioning grooves in the front cover, the front cover stably covers and presses the fixing shell, and therefore the filter screen can be conveniently replaced, the mask can be recycled for multiple times, resource waste is reduced, and life funds are saved; the pair of pressing pieces arranged in the circular groove make contact with and press the filter screen placed in the fixing ring, the arc-shaped pressing plate and the surface of the filter screen are completely pressed under the elastic effect of the spring, and therefore the filter screen can be completely attached to the mask, gaps between the filter screen and the mask are avoided, the sealing performance between the filter screen and the mask is effectively improved, and the service life of the mask is prolonged. The filtering effect of the filter screen is ensured, the protection effect of the mask is improved, and the body health of a user is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary protection, in particular to a mask with a replaceable filter screen. Background Art

[0002] A mask is a sanitary and epidemic prevention product, generally worn on the mouth and nose to filter the air entering the mouth and nose, so as to block harmful gases, odors, droplets, viruses and other substances. It is made of gauze or paper and other materials. The mask has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent and when working in dusty and other polluted environments, wearing a mask has a very good effect. With the increasing number of types of masks, many three-dimensional masks with filters have appeared on the market.

[0003] However, most of the existing three-dimensional masks are disposable, and the filters thereon are mostly integrated and difficult to disassemble. The filters on the masks cannot be replaced, and the three-dimensional masks are generally discarded directly after use and cannot be reused, which wastes resources. In addition, the filters set on the existing three-dimensional masks are mostly directly laid on the masks, and the filters are difficult to fit the masks completely, and some gaps are prone to appear. Some harmful gases will enter the inside of the mask through the gaps and be inhaled by the user, thereby affecting the filtering effect of the filters, reducing the protective effect of the mask, and being detrimental to the health of the user. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that the filter on the mask cannot be replaced and cannot be reused, which wastes resources, the filter is difficult to fit the mask completely, and some gaps are prone to appear, which will affect the filtering effect of the filter and reduce the protective effect of the mask. A mask with a replaceable filter is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mask with a replaceable filter screen comprises a mask body and a filtering mechanism. Ear straps are arranged on both sides of the mask body, and a nose pad is arranged on the top of the mask body.

[0007] The filtering mechanism is arranged on the mask body, and the filtering mechanism includes a fixed shell, an elastic buckle and a front cover. The front cover is arranged on the mask body, a fixing ring is installed in the fixed shell, two pairs of elastic buckles are installed on the fixed shell, a circular groove is provided on the front cover, a pair of arc-shaped fixing plates are provided in the circular groove, a pair of arc-shaped fixing plates are both provided with a clamping piece, a breathable net is matched in the circular groove, two pairs of positioning grooves are provided on the front cover, the two pairs of elastic buckles cooperate with the two pairs of positioning grooves, the clamping piece includes an arc-shaped pressing plate and a spring, the arc-shaped pressing plate is provided with three springs, and a base is provided at one end of the three springs.

[0008] Preferably, a gasket is provided on one side of the fixed shell, two pairs of through holes are opened on the gasket, two pairs of elastic buckles cooperate with the two pairs of through holes, the gasket is located between the fixed shell and the front cover, and the gasket is a rubber gasket.

[0009] Preferably, a filter screen is arranged inside the fixing ring, and one side of the filter screen is in contact with the surface of the fixing shell.

[0010] Preferably, the elastic buckle comprises a bottom plate and an elastic sheet, a pair of elastic sheets are arranged on the bottom plate, and the elastic sheets are elastic plastic sheets.

[0011] Preferably, a circular ventilation grille is provided on the fixed shell, and the diameter of the fixed ring is the same as the diameter of the circular ventilation grille.

[0012] Preferably, the mask body is made of non-woven fabric, and an activated carbon layer, a sterile layer and a skin-friendly layer are arranged on the inner side of the mask body.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model adopts the structural design of the fixing ring, the elastic buckle and the front cover. When using the device, the filter is placed flush in the fixing ring, and then the two pairs of elastic buckles on the fixing shell are snapped into the two pairs of positioning grooves on the front cover, so that the front cover is firmly pressed on the fixing shell, so that the filter can be replaced conveniently, the mask can be recycled for many times, reducing resource waste and saving living funds;

[0015] 2. The utility model adopts the structural design of the arc-shaped pressure plate and the spring. In the process of fixing the front cover on the fixed shell, a pair of pressing parts arranged in the circular groove contact and press the filter placed in the fixed ring. The elastic action of the spring makes the arc-shaped pressure plate and the surface of the filter completely pressed, so that the filter can be tightly covered on the mask, so that the filter can completely fit the mask, avoiding the appearance of a gap between the filter and the mask, effectively improving the sealing between the filter and the mask, ensuring the filtering effect of the filter, enhancing the protective effect of the mask, and ensuring the health of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the top view structure proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of the filtering mechanism proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the assembly structure of the filtering mechanism proposed by the utility model;

[0020] Figure 5 This is a schematic diagram of the main structure of the front cover proposed by the utility model;

[0021] Figure 6 This is a schematic diagram of the assembly structure of the pressing piece proposed by the utility model.

[0022] In the figure: 1. mask body; 101. ear straps; 102. nose pad; 2. filtering mechanism; 201. fixed shell; 202. gasket; 203. fixing ring; 204. filter; 205. elastic buckle; 206. pressing piece; 2061. arc pressure plate; 2062. spring; 2063. base; 207. front cover; 2071. circular groove; 2072. positioning groove; 208. arc fixing plate; 209. breathable net. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-6 A mask with a replaceable filter comprises a mask body 1 and a filtering mechanism 2. Ear straps 101 are arranged on both sides of the mask body 1, a nose bridge pad 102 is arranged on the top of the mask body 1, the mask body 1 is made of non-woven fabric, and an activated carbon layer, a sterile layer and a skin-friendly layer are arranged on the inner side of the mask body 1.

[0025] The filter mechanism 2 is arranged on the mask body 1, and the filter mechanism 2 includes a fixed shell 201, an elastic buckle 205 and a front cover 207. The front cover 207 is arranged on the mask body 1. A fixed ring 203 is installed in the fixed shell 201, and a filter screen 204 is arranged in the fixed ring 203. One side of the filter screen 204 contacts the surface of the fixed shell 201. A circular ventilation grille is arranged on the fixed shell 201. The diameter of the fixed ring 203 is the same as the diameter of the circular ventilation grille. Two pairs of elastic buckles 205 are installed on the fixed shell 201. A gasket 202 is arranged on one side of the fixed shell 201. The gasket 2 Two pairs of through holes are provided on the front cover 207, and two pairs of elastic buckles 205 cooperate with the two pairs of through holes to fix the front cover 207 on the fixed shell 201. The elastic buckle 205 includes a bottom plate and an elastic sheet. A pair of elastic sheets are provided on the bottom plate. The elastic sheets are elastic plastic sheets. The gasket 202 is located between the fixed shell 201 and the front cover 207. The gasket 202 is a rubber gasket, which can improve the sealing between the fixed shell 201 and the front cover 207. A circular groove 2071 is provided on the front cover 207, and a pair of arc-shaped fixing plates 208 are provided in the circular groove 2071. The pair of arc-shaped fixing plates 208 are both equipped with a pressing The front cover 207 is provided with two pairs of positioning grooves 2072, and two pairs of elastic buckles 205 cooperate with the two pairs of positioning grooves 2072. The pressing member 206 includes an arc-shaped pressing plate 2061 and a spring 2062. The arc-shaped pressing plate 2061 is provided with three springs 2062, and one end of each of the three springs 2062 is provided with a base 2063. After the mask body 1 is used and the filter screen 204 needs to be replaced, the two pairs of elastic buckles 205 are pressed and the front cover 207 is pulled up, so that the two pairs of elastic buckles 205 on the fixed shell 201 are released. After removing the two pairs of positioning grooves 2072 and removing the front cover 207, a new filter 204 is placed in the inner circle of the fixed ring 203, and the filter 204 is kept flush with the surface of the fixed shell 201. Then, the front cover 207 is picked up, and the two pairs of elastic buckles 205 on the fixed shell 201 are aligned with the two pairs of positioning grooves 2072 on the front cover 207, and the front cover 207 is squeezed so that the two pairs of elastic buckles 205 are pressed into the two pairs of positioning grooves 2072, so that the filter 204 can be replaced conveniently, and the mask can be recycled for multiple times, reducing resource waste and saving living funds;In the process of pressing the front cover 207 onto the fixed shell 201, a pair of pressing members 206 gradually approach the filter 204 confined in the fixed ring 203, and the arc-shaped pressing plate 2061 in the pressing member 206 contacts the surface of the filter 204 and is elastically contracted by the spring 2062. After the front cover 207 is completely fitted with the fixed shell 201, the filter 204 is pressed into the fixed ring 203, so that the filter 204 can be tightly covered on the mask body 1, so that the filter 204 can be completely fitted with the mask body 1, avoiding the occurrence of a gap between the filter 204 and the surface of the mask body 1, effectively improving the sealing between the filter 204 and the mask body 1, ensuring the filtering effect of the filter 204, improving the protective effect of the mask body 1, and ensuring the health of the user. ;

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mask with a replaceable filter, comprising a mask body (1), Features: Ear straps (101) are provided on both sides of the mask body (1), and a nose bridge pad (102) is provided on the top of the mask body (1); The mask further comprises a filtering mechanism (2), wherein the filtering mechanism (2) is arranged on the mask body (1), the filtering mechanism (2) comprises a fixed shell (201), an elastic buckle (205) and a front cover (207), the front cover (207) being arranged on the mask body (1), a fixing ring (203) being installed in the fixed shell (201), two pairs of elastic buckles (205) being installed on the fixed shell (201), a circular groove (2071) being provided on the front cover (207), and a pair of arc-shaped fixing plates (208) being arranged in the circular groove (2071). A pair of the arc-shaped fixing plates (208) are each provided with a clamping member (206), a breathable net (209) is provided in the circular groove (2071), two pairs of positioning grooves (2072) are provided on the front cover (207), two pairs of the elastic buckles (205) cooperate with the two pairs of positioning grooves (2072), the clamping member (206) comprises an arc-shaped pressing plate (2061) and a spring (2062), the arc-shaped pressing plate (2061) is provided with three springs (2062), and one end of the three springs (2062) is provided with a base (2063).

2. A mask with a replaceable filter according to claim 1, Features: A gasket (202) is provided on one side of the fixed shell (201), and two pairs of through holes are opened on the gasket (202). The two pairs of elastic buckles (205) cooperate with the two pairs of through holes. The gasket (202) is located between the fixed shell (201) and the front cover (207), and the gasket (202) is a rubber gasket.

3. A mask with a replaceable filter according to claim 1, Features: A filter screen (204) is arranged inside the fixed ring (203), and one side of the filter screen (204) is in contact with the surface of the fixed housing (201).

4. A mask with a replaceable filter according to claim 1, Features: The elastic buckle (205) comprises a bottom plate and an elastic sheet. A pair of elastic sheets are arranged on the bottom plate, and the elastic sheets are elastic plastic sheets.

5. A mask with a replaceable filter according to claim 1, Features: The fixed housing (201) is provided with a circular ventilation grille, and the diameter of the fixed ring (203) is the same as the diameter of the circular ventilation grille.

6. A mask with a replaceable filter according to claim 1, Features: The mask body (1) is made of non-woven fabric, and an activated carbon layer, a sterile layer and a skin-friendly layer are arranged on the inner side of the mask body (1).

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