Dustproof gas mask

Abstract

The utility model discloses a dustproof and gas mask, and relates to the technical field of breathing appliances, the dustproof and gas mask comprises a mask main body and a filter element, the filter element is detachably arranged on the mask main body, and the filter element comprises a shell; the mounting cover is detachably connected to the other end of the shell; the anti-poison filter element is arranged at one end, close to the mounting cover, in the shell; the dustproof filter element is arranged at the end, close to the mounting pipe, in the shell, the dustproof filter element is a hollow cylinder with one end open, the open end is connected with the anti-poison filter element, and then the interior of the anti-poison filter element is communicated with the interior of the dustproof filter element. According to the dustproof filter element, a three-dimensional filtering mode is adopted, air enters from the center of the dustproof filter element and flows out from the bottom face and the side face, the filtering area is greatly increased, then the breathing resistance is reduced, and the use experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of respiratory equipment, in particular to a dustproof and toxic gas mask. BACKGROUND

[0002] In some special workplaces, there are a large amount of toxic substances and dust in the air. In order to protect the health of workers, workers are required to correctly wear masks with dustproof and toxic gas proof functions to filter out toxic substances and dust in the air.

[0003] A conventional mask mainly comprises a mask body and a filter core for filtering toxic substances and dust. The filter core is detachably installed on the mask body, so as to facilitate replacement of the filter core after a use time, and to realize the purpose of repeated use of the mask body. For dustproof and toxic gas proof requirements, the filter core comprises a dustproof filter core and a toxic gas filter core. The dustproof filter core intercepts particles of different diameters in dust by using various filter layers, and the toxic gas filter core adsorbs toxic substances by using activated carbon. After using such a dustproof and toxic gas proof composite filter core, there is usually a large breathing resistance under the requirement of the filtering level. The breathing resistance mainly comes from the dustproof filter core. After using the conventional filtering mode of single-face air inlet and single-face air outlet, the filtering area of the dustproof filter core is very limited, which leads to the breathing resistance that cannot be effectively reduced, and the use experience is poor. CONTENT OF THE UTILITY MODEL

[0004] The dustproof and toxic gas mask provided by the present application solves the problem of large breathing resistance in the prior art caused by the planar filtering mode.

[0005] The dustproof and toxic gas mask provided by the present application solves the problem of large breathing resistance in the prior art caused by the planar filtering mode.

[0006] The shell is provided with a mounting pipe at one end, and the mounting pipe is detachably connected to the mask body.

[0007] The mounting cover is detachably connected to the other end of the shell.

[0008] The toxic gas filter core is arranged at one end of the shell close to the mounting cover, and the toxic gas filter core is provided with a plug pipe at the end away from the mounting cover.

[0009] The dustproof filter core is arranged at one end of the shell close to the mounting pipe, and the dustproof filter core is a hollow cylinder with an open end. The open end is connected to the plug pipe, so that the interior of the toxic gas filter core and the interior of the dustproof filter core are in communication.

[0010] In a possible embodiment, the installation cover is provided with a plurality of air inlet holes, the anti-poison filter element comprises an anti-poison shell and activated carbon arranged inside the anti-poison shell, and a cannula is arranged at one end of the anti-poison shell, and the other end of the anti-poison shell is provided with a plurality of through holes.

[0011] In a possible embodiment, the cannula is a cylindrical tube with threads on the outer side, and the dustproof filter element is provided with a circular ring with threads on the inner side inside the opening, and the cannula is connected to the circular ring through the threads.

[0012] In a possible embodiment, the dustproof filter element has an outer diameter smaller than the inner diameter of the shell, so that a channel for air flow is formed between the dustproof filter element and the inner side of the shell.

[0013] In a possible embodiment, the inner side of the shell is provided with a stopper, the distance between the stopper and the installation cover is the same as the thickness of the anti-poison filter element, and the anti-poison filter element is clamped between the installation cover and the stopper.

[0014] In a possible embodiment, the dustproof filter element comprises, in sequence in the direction towards the installation tube, a melt-blown layer, an electrostatic cotton layer, a heavy ion microporous membrane layer, and a non-woven fabric layer.

[0015] In a possible embodiment, the face mask body is provided with a silica gel pad on the side facing away from the composite filter element.

[0016] In a possible embodiment, the edge of the face mask body is connected with an elastic rope.

[0017] In a possible embodiment, the face mask body is provided with an exhalation valve.

[0018] The dustproof and anti-poison face mask provided in the application has the following advantages:

[0019] The air enters from the center of the dustproof filter element and flows out from the bottom surface and the side surface in a three-dimensional filtering manner, greatly increasing the filtering area, thereby reducing the breathing resistance and improving the use experience. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Fig. 1 The overall structure of the dustproof and anti-poison face mask provided in the embodiments of the application is shown in the figure.

[0022] Fig. 2 The structure explosion diagram of the composite filter element provided in the embodiments of the application is shown in the figure.

[0023] Fig. 3 An axial section structure schematic diagram of the composite filter element is provided for the embodiments of the present application.

[0024] BRIEF DESCRIPTION OF DRAWINGS: 100, mask body; 110, silica gel pad; 120, elastic rope; 130, exhalation valve; 200, composite filter element; 210, shell; 2101, anti-toxic filter element; 2102, dustproof filter element; 2103, insertion tube; 2104, anti-toxic shell; 2105, activated carbon; 2106, melt-blown layer; 2107, electrostatic cotton layer; 2108, heavy ion microporous membrane layer; 2109, non-woven fabric layer; 220, mounting cover; 230, bottom cover; 231, mounting tube. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] Figs. 1-3 A structure schematic diagram of a dustproof and anti-toxic mask is provided for the embodiments of the present application. The embodiments of the present application provide a dustproof and anti-toxic mask, which comprises a mask body 100 and a composite filter element 200. The composite filter element 200 is detachably arranged on the mask body 100. The composite filter element 200 comprises:

[0027] A shell 210, one end of the shell 210 is provided with a mounting tube 231, and the mounting tube 231 is detachably connected to the mask body 100;

[0028] A mounting cover 220, which is detachably connected to the other end of the shell 210;

[0029] An anti-toxic filter element 2101, which is arranged inside the shell 210 and close to one end of the mounting cover 220. The anti-toxic filter element 2101 is provided with an insertion tube 2103 at the end away from the mounting cover 220;

[0030] A dustproof filter element 2102, which is arranged inside the shell 210 and close to one end of the mounting tube 231. The dustproof filter element 2102 is a hollow cylinder with one end open. The open end is connected to the insertion tube 2103, so that the inside of the anti-toxic filter element 2101 and the inside of the dustproof filter element 2102 are in communication.

[0031] Exemplarily, the mask body 100 is in a shape matching the human face, especially the mouth and nose, so that when the mask body 100 is worn, it can closely fit the face, reducing the possibility of dust and toxic substances entering from the gaps.

[0032] Further, the composite filter element 200 is installed on the outer side of the mask body 100, and the mask body 100 is provided with a silica gel pad 110 on the side opposite to the composite filter element 200, i.e. the inner side. The silica gel pad 110 is preferably arranged on the edge of the mask body 100. After using the flexible silica gel pad 110, the gap between the mask body 100 and the face can be filled, the contact can be closer, and the wearing feeling can be improved.

[0033] Further, the mask body 100 is connected with elastic ropes 120 on the edges. The elastic ropes 120 are made of rubber and latex and have great elasticity. Two elastic ropes 120 are preferably used, and the two elastic ropes 120 are respectively connected to the upper edge and the lower edge of the mask body 100, so that after the mask body 100 is worn, the two elastic ropes 120 are hung on the upper part and the lower part of the head, respectively, to improve the stability of the wearing of the mask body 100.

[0034] Further, the mask body 100 is provided with an exhalation valve 130. The exhalation valve 130 is a one-way valve structure, so that the air exhaled in the mask body 100 is discharged through the exhalation valve 130, and the entering air can only enter the inside of the mask body 100 after being filtered by the composite filter element 200.

[0035] In a possible embodiment, the installation cover 220 is provided with a plurality of air inlet holes, the anti-poison filter element 2101 includes an anti-poison shell 2104 and activated carbon 2105 arranged in the anti-poison shell 2104, the cannula 2103 is arranged at one end of the anti-poison shell 2104, and the other end of the anti-poison shell 2104 is provided with a plurality of through holes.

[0036] Exemplarily, the cannula 2103 and the anti-poison shell 2104 are integrally formed, and the outer diameter of the anti-poison shell 2104 is the same as the inner diameter of the shell 210. In order to avoid the activated carbon 2105 from leaking out of the anti-poison shell 2104, the activated carbon 2105 can be placed in a mesh cover, and then the mesh cover is placed in the anti-poison shell 2104. After the air inlet holes and the through holes are arranged, part of the air inlet holes and part of the through holes overlap, so that the air outside can enter the inside of the anti-poison shell 2104 through the air inlet holes and the through holes.

[0037] The inner diameter of the installation cover 220 is the same as the inner diameter of the shell 210, and the installation cover 220 and the shell 210 are detachably connected by screwing, so that after the installation cover 220 and the shell 210 are connected, the space inside the shell 210 and the installation cover 220 has flush inner side.

[0038] In a possible embodiment, the cannula 2103 is a cylindrical tube with threads on the outer side, the dust filter element 2102 is provided with a circular ring with threads on the inner side inside the opening, and the cannula 2103 is connected with the circular ring through threads.

[0039] Exemplarily, the circular ring can be adhered to the inner side of the opening of the dustproof filter 2102 by glue. Since the dustproof filter 2102 is usually replaced simultaneously with the toxic filter 2101, the insertion tube 2103 can be adhered to the inner side of the dustproof filter 2102 by glue in addition to the screwing mode.

[0040] In a possible embodiment, the outer diameter of the dustproof filter 2102 is smaller than the inner diameter of the shell 210, so that a channel for air flow is formed between the dustproof filter 2102 and the inner side of the shell 210.

[0041] Exemplarily, after the channel is formed on the outer side of the dustproof filter 2102, the partially filtered air passing through the side of the dustproof filter 2102 can be gathered in the installation tube 231 through the channel. In addition to the channel on the side, a channel needs to be formed between the bottom of the dustproof filter 2102 and the inner bottom of the shell 210, so that the partially filtered air at the bottom of the dustproof filter 2102 can enter the installation tube 231, and the air filtered on the side is not blocked.

[0042] In a possible embodiment, the inner side of the shell 210 is provided with a stopper, the distance between the stopper and the installation cover 220 is the same as the thickness of the toxic filter 2101, and the toxic filter 2101 is clamped between the installation cover 220 and the stopper.

[0043] Exemplarily, the stopper is formed by protruding the inner surface of the shell 210, the stopper can be arranged in a small amount of symmetry, or a ring can be formed on the inner surface of the shell 210. Regardless of the arrangement, it is necessary to ensure that the diameter of the space surrounded by the plurality of stoppers is greater than the outer diameter of the dustproof filter 2102, so that the dustproof filter 2102 can pass through the space inside the stopper, and a channel for air flow is formed between the dustproof filter 2102 and the inner surface of the shell 210.

[0044] Further, after the toxic filter 2101 is installed between the installation cover 220 and the stopper, the distance between the bottom of the toxic filter 2101 and the inner bottom of the shell 210 is greater than the thickness of the dustproof filter 2102, so that a channel for air flow is formed between the dustproof filter 2102 and the inner bottom of the shell 210 after the dustproof filter 2102 is connected with the toxic filter 2101.

[0045] In a possible embodiment, the dustproof filter 2102 includes, in the direction towards the installation tube 231, a melt-blown layer 2106, an electrostatic cotton layer 2107, a heavy ion microporous membrane layer 2108, and a non-woven fabric layer 2109 in sequence.

[0046] Exemplarily, the edges of the melt-blown layer 2106 and the non-woven fabric layer 2109 are connected together by means of hot pressing, while the electrostatic cotton layer 2107 and the heavy ion microporous membrane layer 2108 are sandwiched between the melt-blown layer 2106 and the non-woven fabric layer 2109, so that the electrostatic cotton layer 2107 filters the particles with a larger diameter in the air, and the heavy ion microporous membrane layer 2108 further filters the particles with a diameter greater than 5 μm filtered by the electrostatic cotton layer 2107, so as to improve the precision of air filtration as much as possible.

[0047] Although preferred embodiments of the application have been described herein, changes and modifications can be suggested to one skilled in the art, and it is intended that the application encompass such changes and modifications as fall within the scope of the appended claims.

[0048] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A dustproof and gas-proof face mask, characterized in that, The mask includes a face mask body (100) and a composite filter element (200), wherein the composite filter element (200) is detachably disposed on the face mask body (100), and the composite filter element (200) comprises: The outer shell (210) has an installation tube (231) at one end, and the installation tube (231) is detachably connected to the mask body (100); Mounting cover (220), detachably connected to the other end of the housing (210); A gas filter element (2101) is disposed inside the housing (210) near the mounting cover (220), and the gas filter element (2101) has an insertion tube (2103) at the end opposite to the mounting cover (220); A dust filter element (2102) is disposed inside the outer casing (210) near one end of the mounting tube (231). The dust filter element (2102) is a hollow cylinder with one open end, and the open end is connected to the insertion tube (2103), thereby enabling communication between the interior of the anti-toxic filter element (2101) and the interior of the dust filter element (2102).

2. The dustproof and gas-proof face mask according to claim 1, characterized in that, The mounting cover (220) is provided with multiple air inlets. The gas filter element (2101) includes a gas shell (2104) and activated carbon (2105) disposed inside the gas shell (2104). The insertion tube (2103) is disposed at one end of the gas shell (2104), and the other end of the gas shell (2104) is provided with multiple through holes.

3. A dustproof and gas-proof face mask according to claim 1, characterized in that, The insertion tube (2103) is a cylindrical tube with threads on its outer surface. The dust filter element (2102) has a ring with threads on its inner surface inside the opening. The insertion tube (2103) is connected to the ring by threads.

4. A dustproof and gas-proof face mask according to claim 1, characterized in that, The outer diameter of the dust filter element (2102) is smaller than the inner diameter of the outer shell (210), so that a channel for airflow is formed between the inner surface of the dust filter element (2102) and the outer shell (210).

5. A dustproof and gas-proof face mask according to claim 1, characterized in that, A stop is provided on the inner side of the outer casing (210). The distance between the stop and the mounting cover (220) is the same as the thickness of the anti-toxic filter element (2101). The anti-toxic filter element (2101) is stuck between the mounting cover (220) and the stop.

6. A dustproof and gas-proof face mask according to claim 1, characterized in that, The dust filter element (2102) comprises, in sequence, the following layers in the direction toward the mounting tube (231): a meltblown layer (2106), an electrostatic cotton layer (2107), a heavy ion microporous membrane layer (2108), and a nonwoven fabric layer (2109).

7. A dustproof and gas-proof face mask according to claim 1, characterized in that, The mask body (100) has a silicone pad (110) on the side facing away from the composite filter (200).

8. A dustproof and gas-proof face mask according to claim 1, characterized in that, The edge of the mask body (100) is connected to an elastic cord (120).

9. A dustproof and gas-proof face mask according to claim 1, characterized in that, The mask body (100) is provided with an exhalation valve (130).

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