Anti-biological and chemical gas mask

Abstract

The present invention relates to an anti-biochemical gas mask, which comprises: a mask body, a mask for protecting the user's face, and a goggles embedded in the front side thereof; a connecting assembly, comprising a plurality of fixing buckles fixed around the mask body and a wearing rope matched with the fixing buckles; a face-fitting sealing assembly, installed inside the mask body, and used to fit closely with the user's face; a breathing mechanism, comprising an exhalation assembly and an inhalation assembly, the inhalation assembly is located in the middle of the front of the mask body, and two exhalation assemblies are provided, and are symmetrically installed on the left and right sides of the inhalation assembly; the inhalation assembly comprises a first filter housing connected to the mask body, and an end of the first filter housing away from the mask body is detachably fixedly connected with a replaceable filter box, and a second filter housing is buckled on the outside of the replaceable filter box, and a filter assembly is provided in the replaceable filter box. The present invention has the beneficial effects of efficient sealing, good filtering effect, and convenient replacement of filter elements.

Description

Technical Field

[0001] The invention relates to the technical field of protective equipment, in particular to an anti-biochemical gas mask. Background Art

[0002] In today's complex and ever-changing environment, whether it is military operations, chemical production, or responding to sudden biological and chemical terrorist attacks, harmful gas leaks in public health events, etc., people's demand for respiratory protection equipment is becoming increasingly urgent. Although traditional gas masks can block some harmful substances to a certain extent, they still have many defects.

[0003] On the one hand, the existing gas masks have poor sealing effects. When the user is exercising, wearing for a long time or in a complex environment, the outside air can easily penetrate through the gap between the face and the mask, allowing harmful gases and biochemical pollutants to enter, greatly reducing the protective effectiveness. For example, in chemical workshops, workers need to move frequently and bend over to operate. Ordinary gas masks often do not fit tightly, causing workers to inhale a small amount of toxic volatiles, which causes damage to the body over time.

[0004] On the other hand, the filtering performance of the respiratory mechanism is limited. Previous filtering devices mostly used single or simple combination of filtering materials, which made it difficult to cope with complex and diverse biochemical threats. For example, when faced with air containing a variety of pollutants such as tiny sol particles, volatile organic compounds, bacteria and viruses, conventional filters cannot fully and efficiently intercept them, causing some harmful substances to penetrate the filter layer and threaten the health of users. In addition, traditional filter materials are inconvenient to replace. When the filter material reaches the end of its service life, the cumbersome replacement process is not only time-consuming, but may also damage the mask or affect the subsequent protective effect due to improper operation, reducing the practicality and emergency response capabilities of the mask. Summary of the invention

[0005] The present invention mainly provides an anti-biochemical gas mask to solve the problems of poor surface sealing, insufficient filtering performance and inconvenient filter material replacement in existing gas masks.

[0006] The purpose of the present invention is mainly achieved through the following solutions: Anti-biological and chemical gas mask, the mask comprising: A mask body, wherein the mask is used to protect the user's face and has goggles embedded in the front side thereof; A connecting assembly, the connecting assembly comprising a plurality of fixing buckles fixed around the mask body and a wearing rope matched with the fixing buckles; A face-fitting sealing component, which is installed inside the mask body and is used to fit tightly against the user's face; A breathing mechanism, the breathing mechanism comprising an exhalation component and an inhalation component, the inhalation component is located in the middle of the front of the mask body, and two exhalation components are provided and symmetrically installed on the left and right sides of the inhalation component; The air intake assembly includes a first filter shell connected to the cover body, and a replaceable filter box is detachably and fixedly connected to one end of the first filter shell away from the cover body. A second filter shell is buckled on the outer side of the replaceable filter box. A filter assembly is arranged in the replaceable filter box. The filter assembly is composed of a coarse filter layer, an activated carbon adsorption layer, a sol particle layer and a HEPA layer in sequence along the air flow direction.

[0007] Preferably, the face sealing assembly includes a face colloid fixedly connected to the inner edge of the cover body, a nose colloid is provided on the front side of the face colloid, and a colloid connecting layer is provided on the front side of the nose colloid, and a flow guide cover is connected to the front side of the colloid connecting layer, and one end of the first filter shell extends into the inner side of the cover body and is connected to the flow guide cover.

[0008] Preferably, the inner side of the cover body is provided with support beams located on both sides of the first filter shell.

[0009] Preferably, the first filter housing, the replaceable filter box and the second filter housing are coaxially arranged and internally hollow cylindrical structures, a plurality of first filter holes are evenly arranged at the front end of the second filter housing, and the rear end of the second filter housing is open, the replaceable filter box includes a replaceable core material and a connecting housing, the filter assembly is located inside the replaceable core material, and the front end of the connecting housing is connected to the second filter housing, and the rear end of the connecting housing is connected to the first filter housing.

[0010] Preferably, the front and rear ends of the replaceable core material are both open, and the rear end of the replaceable core material is provided with a connecting portion, the connecting portion is provided with a first external thread, and the front end inner wall of the connecting shell is provided with a first internal thread, and the replaceable core material and the connecting shell are connected by the first external thread and the first internal thread.

[0011] Preferably, a plurality of connection ears are evenly arranged along the axial direction at the front end edge of the connection housing and the rear end edge of the second filter housing, and the connection housing and the second filter housing are connected via the connection ears.

[0012] Preferably, a plurality of second filter holes are evenly opened at the rear end of the connecting shell, and a second external thread is provided on the outer wall at the rear end of the connecting shell, and a second internal thread is provided on the inner wall at the front end of the first filter shell, and the connecting shell and the first filter shell are connected via the second external thread and the second internal thread.

[0013] Preferably, the sol particles are modified sodium chloride salt sol particles, which are prepared using raw materials comprising the following substances: sodium chloride salt, solvent, modifier, anhydrous ethanol, concentrated hydrochloric acid and nano-silicon dioxide.

[0014] Therefore, compared with the prior art, the present invention has the following advantages: (1) The filter component in the air intake assembly of the present invention adopts a multi-layer composite structure. The coarse filter layer, activated carbon adsorption layer, sol particle layer and HEPA layer work together to efficiently intercept and purify various types of harmful substances such as common dust, organic volatiles, bacteria and viruses in the air. The comprehensive filtration efficiency is far superior to that of traditional gas masks with single or simple combination of filter materials, providing users with nearly pure breathing air; (2) The threaded connection and the connecting ear auxiliary fixing design between the replaceable filter cartridge and the first filter housing and the second filter housing in the present invention make it possible to replace the replaceable core material without professional tools, and ordinary users can complete the operation in a short time. Compared with the traditional complicated and cumbersome filter material replacement procedure, the present invention can quickly restore the protective performance of the mask in an emergency, ensuring the safety of the user; (3) The present invention achieves a full-scale, multi-level close fit with the user's face through the carefully designed face-to-face sealing component, face-to-face colloid, nose-to-face colloid and the corresponding air deflector structure. Whether it is daily slight movements or large-scale facial movements in high-intensity work, it can effectively prevent the outside air from penetrating through the gap between the face and the mask body, greatly improving the reliability of protection; (4) The support beam on the inner side of the mask body of the present invention maintains the stability of the mask body shape without adding too much weight or pressure, thereby ensuring the comfort of the user for long-term wearing. The reasonably distributed wearing rope and fixing buckle cooperate to make the mask stable and not easy to shake or move. The user does not need to frequently adjust the mask during movement, thereby improving the work efficiency and continuity of protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a side view of the present invention; Figure 3 It is a structural schematic diagram of the veneer sealing component in the present invention; Figure 4 It is a structural schematic diagram of the air intake assembly in the present invention; Figure 5 It is a schematic structural diagram of the air intake assembly from another angle in the present invention; Figure 6 It is a schematic diagram of the internal structure of the replaceable filter box in the present invention.

[0016] Illustrations: 1-mask body, 2-goggles, 3-fixing buckle, 4-wearing rope, 5-exhalation component, 6-first filter shell, 7-replaceable filter box, 8-second filter shell, 9-coarse filter layer, 10-activated carbon adsorption layer, 11-sol particle layer, 12-HEPA layer, 13-face colloid, 14-nose colloid, 15-colloid connecting layer, 16-flow guide cover, 17-support beam, 18-first filter hole, 19-replaceable core material, 20-connecting shell, 21-connecting part, 22-connecting ear, 23-second filter hole. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0018] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0019] Embodiment 1: like Figure 1 , 2 As shown, the present application provides a technical solution, an anti-biological and chemical gas mask, the mask comprising: The mask body 1 is used to protect the user's face, and the front side of the mask is embedded with goggles 2, which can effectively block splashes and some light damage, provide the user with a clear field of vision while ensuring eye protection; The connecting component is a key part for fixing the mask, and includes a plurality of fixing buckles 3 fixed around the mask body 1 and a wearing rope 4 adapted to the fixing buckles 3. The wearing rope 4 can be flexibly adjusted according to the head size of the user and is firmly fixed by the fixing buckles 3 to ensure that the mask will not loosen or move during use; The face sealing component is installed inside the mask body 1 and is used to fit closely with the user's face to prevent harmful gases from penetrating from the edge of the face; The breathing mechanism includes an exhalation component 5 and an inhalation component. The inhalation component is located in the middle of the front of the mask body 1 and can efficiently guide the outside air to enter. There are two exhalation components 5, which are symmetrically installed on the left and right sides of the inhalation component to facilitate the smooth discharge of the exhaled gas of the user and avoid secondary inhalation. The exhalation component 5 is a one-way valve, and the gas flow direction is from the inside of the mask body 1 to the outside of the mask body 1. It is implemented by existing technical means; The above-mentioned air inhalation component includes a first filter housing 6 connected to the cover body 1. The end of the first filter housing 6 away from the cover body 1 is detachably fixedly connected with a replaceable filter box 7. This detachable design greatly facilitates the replacement of the filter material. The user can quickly replace the filter box when its service life is about to end without complicated tools, ensuring continuous and effective protection. The outer side of the replaceable filter box 7 is buckled with a second filter housing 8. The double housing structure not only enhances the physical protection performance of the filter box, prevents the filter material from being damaged by external impact, but also provides a stable installation environment for the internal filter component. The replaceable filter box 7 is provided with a filter component. The filter component is composed of a coarse filter layer 9, an activated carbon adsorption layer 10, a sol particle layer 11 and a HEPA layer 12 in the direction of air flow. The coarse filter layer 9 can first intercept larger dust and impurity particles in the air, reducing the burden on subsequent filter layers; the activated carbon adsorption layer 10, with its rich pore structure, can efficiently adsorb volatile organic compounds, odors and other harmful substances; the sol particle layer 11 has adsorption and sterilization functions; the HEPA layer 12, as the last line of defense, can be used with extremely high efficiency (for 0.3 The filtration efficiency of particles of microns and above can reach over 99.97%), intercepting tiny bioaerosols such as bacteria and viruses, ensuring that the air entering the user's breathing area is pure and pollution-free.

[0020] The sol particle layer 11 is modified sodium chloride salt sol particles, which are prepared using raw materials including the following substances: sodium chloride salt, solvent, modifier, anhydrous ethanol, concentrated hydrochloric acid and nano-silicon dioxide; the modified sodium chloride salt sol particles have functions such as adsorption and sterilization. It can adsorb some harmful gas molecules in the air and have a certain inhibitory and killing effect on microorganisms (such as bacteria and viruses). The salt sol particles have a certain charge and can undergo electrostatic adsorption with harmful gas molecules or microorganisms with opposite charges in the air. At the same time, the salt component will also affect the living environment of the microorganisms and interfere with the normal physiological activities of the microorganisms.

[0021] Embodiment 2: like Figure 3As shown, the present application provides another technical solution, an anti-biochemical gas mask, which is different from Example 1 in that a face-sticking sealing component includes a face-sticking colloid 13 fixedly connected to the inner edge of the mask body 1. Its softness and facial contour-fitting characteristics ensure a tight fit over a large area. A nose-sticking colloid 14 is provided on the front side of the face-sticking colloid 13, which can fit the upper end of the user's nose, and a colloid connecting layer 15 is provided on the front side of the nose-sticking colloid 14, which adopts medical glue. A flow guide cover 16 is connected to the front side of the colloid connecting layer 15. One end of the first filter shell 6 extends into the inner side of the mask body 1 and is connected to the flow guide cover 16. The flow guide cover 16 guides the purified air to flow smoothly to the user's mouth and nose on the one hand, and is connected to the first filter shell 6 on the other hand, so that the inhalation path is more reasonable and efficient. The face-sticking colloid 13 and the nose-sticking colloid 14 are made of nitrile rubber.

[0022] Specifically, support beams 17 located on both sides of the first filter shell 6 are bonded to the inner side of the mask body 1, which provide internal support for the mask body 1 without affecting the wearing comfort, prevent it from being deformed under pressure or external force, and ensure the normal operation of the breathing mechanism and the face sealing component.

[0023] Embodiment 3: like Figure 4 , 5 As shown in Figure 6, the present application provides another technical solution, an anti-biological and chemical gas mask, which is different from Example 1 in that the first filter shell 6, the replaceable filter box 7 and the second filter shell 8 are coaxially arranged and have a hollow cylindrical structure inside. This coaxial design ensures the smoothness of air flow and reduces air flow resistance. The front end of the second filter shell 8 is evenly provided with a plurality of first filter holes 18, which is conducive to the uniform dispersion of air into the filter component. The rear end of the second filter shell 8 is open, and the replaceable filter box 7 includes a replaceable core material 19 and a connecting shell 20. The filter component is located inside the replaceable core material 19, and the front end of the connecting shell 20 is connected to the second filter shell 8, and the rear end of the connecting shell 20 is connected to the first filter shell 6, so as to ensure the sealing and stability of the overall structure.

[0024] Specifically, the front and rear ends of the replaceable core material 19 are both open, and the rear end of the replaceable core material 19 is integrally provided with a connecting portion 21, the connecting portion 21 is provided with a first external thread, and the front end inner wall of the connecting shell 20 is provided with a first internal thread. The replaceable core material 19 and the connecting shell 20 are connected by the first external thread and the first internal thread, so that the replaceable core material 19 can be easily installed and disassembled, thereby reducing maintenance costs.

[0025] Specifically, a plurality of connecting ears 22 are evenly arranged along the axial direction at the front end edge of the connecting shell 20 and the rear end edge of the second filter shell 8. The connecting shell 20 and the second filter shell 8 are connected via the connecting ears 22 to strengthen the connection between the two to prevent loosening and air leakage, and the fixed connection is achieved by the bolts on the connecting ears.

[0026] Specifically, a plurality of second filter holes 23 are evenly opened at the rear end of the connecting shell 20, and a second external thread is provided on the outer wall at the rear end of the connecting shell 20, and a second internal thread is provided on the inner wall at the front end of the first filter shell 6. The connecting shell 20 and the first filter shell 6 are connected by the second external thread and the second internal thread, so as to facilitate the disassembly and installation of the replaceable filter box 7.

[0027] The anti-biological and chemical gas mask provided in this application has wide applicability and good market prospects. Through optimized design and material selection, the mask can efficiently filter harmful substances in biochemical gases to ensure the user's breathing safety. At the same time, the comfort and easy maintainability of the mask also greatly improve the user's wearing experience, and it is worthy of further promotion and application.

[0028] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

Claims

1. Anti-biological and chemical gas mask, characterized in that: The mask includes: A mask body (1), the mask being used to protect the user's face, and having goggles (2) embedded in the front side thereof; A connecting assembly, the connecting assembly comprising a plurality of fixing buckles (3) fixed to the periphery of the mask body (1) and a wearing rope (4) adapted to the fixing buckles (3); A face-fitting sealing component, the face-fitting sealing component being installed inside the mask body (1) and being used to fit tightly against the face of a user; A breathing mechanism, the breathing mechanism comprising an exhalation component (5) and an inhalation component, the inhalation component being located in the middle of the front face of the mask body (1), and two exhalation components (5) being provided and symmetrically mounted on the left and right sides of the inhalation component; The air intake assembly comprises a first filter housing (6) connected to the cover body (1); an end of the first filter housing (6) away from the cover body (1) is detachably fixedly connected to a replaceable filter box (7); a second filter housing (8) is buckled on the outer side of the replaceable filter box (7); a filter assembly is arranged in the replaceable filter box (7); and the filter assembly comprises a coarse filter layer (9), an activated carbon adsorption layer (10), a sol particle layer (11) and a HEPA layer (12) in sequence along the air flow direction.

2. The anti-biological and chemical gas mask according to claim 1, characterized in that: The face-sticking sealing component comprises a face-sticking colloid (13) fixedly connected to the inner edge of the mask body (1); a nose-sticking colloid (14) is provided on the front side of the face-sticking colloid (13); a colloid connecting layer (15) is provided on the front side of the nose-sticking colloid (14); a flow guide cover (16) is connected to the front side of the colloid connecting layer (15); and one end of the first filter housing (6) extends into the inner side of the mask body (1) and is in communication with the flow guide cover (16).

3. The anti-biological and chemical gas mask according to claim 2, characterized in that: Support beams (17) are provided on the inner side of the cover body (1) and are located on both sides of the first filter housing (6).

4. The anti-biological and chemical gas mask according to claim 1, characterized in that: The first filter housing (6), the replaceable filter box (7) and the second filter housing (8) are coaxially arranged cylindrical structures with a hollow interior; a plurality of first filter holes (18) are evenly arranged at the front end of the second filter housing (8); the rear end of the second filter housing (8) is open; the replaceable filter box (7) comprises a replaceable core material (19) and a connecting housing (20); the filter assembly is located inside the replaceable core material (19); the front end of the connecting housing (20) is connected to the second filter housing (8); and the rear end of the connecting housing (20) is connected to the first filter housing (6).

5. The anti-biological and chemical gas mask according to claim 4, characterized in that: Both front and rear ends of the replaceable core material (19) are open, and a connecting portion (21) is provided at the rear end of the replaceable core material (19), the connecting portion (21) is provided with a first external thread, and the front inner wall of the connecting shell (20) is provided with a first internal thread, and the replaceable core material (19) and the connecting shell (20) are connected via the first external thread and the first internal thread.

6. The anti-biological and chemical gas mask according to claim 5, characterized in that: A plurality of connection ears (22) are evenly arranged along the axial direction at the front end edge of the connection housing (20) and the rear end edge of the second filter housing (8); the connection housing (20) and the second filter housing (8) are connected via the connection ears (22).

7. The anti-biological and chemical gas mask according to claim 6, characterized in that: The rear end of the connecting shell (20) is evenly provided with a plurality of second filter holes (23), and the rear end outer wall of the connecting shell (20) is provided with a second external thread, and the front end inner wall of the first filter shell (6) is provided with a second internal thread, and the connecting shell (20) and the first filter shell (6) are connected via the second external thread and the second internal thread.

8. The anti-biological and chemical gas mask according to claim 1, characterized in that: The sol particle layer (11) is modified sodium chloride salt sol particles, which are prepared using raw materials containing the following substances: sodium chloride salt, solvent, modifier, anhydrous ethanol, concentrated hydrochloric acid and nano silicon dioxide.

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