Self-suction filtering mask with anti-toxic function

Abstract

A self-suction filter mask with anti-virus function comprises, from outside to inside, a mouth-nose cover, a mouth-nose mask and a valve seat assembly. The mouth-nose cover is provided with a gas guide grid in the middle and elastic band limiting grooves on both sides. The mouth-nose mask is provided with a mask exhalation port in the middle and mask inhalation ports on both sides, and a limiting column is arranged between the mask exhalation port and the mask inhalation port, which is inserted into the elastic band limiting groove to fix the positions of the mouth-nose cover and the mouth-nose mask. The valve seat assembly is composed of an exhalation valve seat, an inhalation valve seat, an exhalation valve sheet and an inhalation valve sheet. The inhalation valve seat is arranged on both sides of the exhalation valve seat, the exhalation valve seat is positioned by being clamped with the mask exhalation port, and the exhalation valve seat is extended from the position of the inhalation valve seat and clamped with a filter element. The utility model has the advantages of compact structure, stable wearing, simple operation and high experience.

Description

Technical Field

[0001] This utility model relates to the field of self-priming filter masks, specifically a self-priming filter mask with anti-toxic function. Background Technology

[0002] Gas masks are widely used in petroleum, chemical, mining, metallurgy, military, fire fighting, disaster relief, epidemic prevention, environmental protection, and machinery manufacturing industries, protecting users from toxic and harmful gases. However, existing gas masks suffer from poor compactness, inadequate fit, and are prone to movement. Furthermore, the connection between the valve seat and the mask is cumbersome, resulting in poor stability. These combined issues lead to a poor user experience with existing gas masks. Utility Model Content

[0003] In view of the technical problems existing in the prior art, this utility model provides a self-priming filter mask with anti-toxic function.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a self-priming filter mask with anti-toxic function, comprising, from the outside to the inside, a nose and mouth cover, a nose and mouth mask, and a valve seat assembly; the nose and mouth cover has an air-guiding mesh in the middle and elastic band limiting grooves on both sides; the nose and mouth mask has an exhalation port in the middle and inhalation ports on both sides, with a limiting post between the exhalation and inhalation ports, the limiting post being inserted into the elastic band limiting groove to fix the positions of the nose and mouth cover and the nose and mouth mask; the valve seat assembly consists of an exhalation valve seat and an inhalation valve seat, with the inhalation valve seats located on both sides of the exhalation valve seat, the exhalation valve seat engaging and positioning with the exhalation port of the mask, and the exhalation valve seat extending from the inhalation valve seat and engaging with the filter element. This structure ensures a tight fit between the nose and mouth cover, the nose and mouth mask, and the valve seat assembly, making it easy to wear.

[0005] The mouth and nose mask cover has an inward curve around the perimeter and an outward protrusion at the lower center, forming a smooth, teardrop-shaped arc. An air-guiding mesh is located in the center of the cover, forming the outermost protruding part of the cover and corresponding to the exhalation port of the mask. Elastic band through-holes are located at the upper left, lower left, upper right, and lower right of the cover. Elastic band positioning structures are located between the upper left and lower left elastic band through-holes, and between the upper right and lower right elastic band through-holes. The cover is installed outside the mask, with the inhalation port of the mask protruding from the cover. The air-guiding mesh consists of N horizontally connected support strips, which are angled in both inward and outward directions to deflect exhaled humid air downwards, preventing water vapor condensation on the wearer's glasses. This structure ensures the mask does not easily shift after being worn, improving the user experience.

[0006] The elastic band through-hole is a rectangular hole; the upper elastic band through-hole is higher on the side closer to the middle and lower on the side closer to the left / right side, and the lower elastic band through-hole is lower on the side closer to the middle and higher on the side closer to the left / right side; the elastic band forms a certain angle after passing through the elastic band through-hole, making it easy to wear.

[0007] The elastic band positioning structure is a claw structure. One side of the claw is connected to the outer edge of the mouth and nose mask cover, and the other side protrudes outward and extends along the arc of the outer arc surface of the mouth and nose mask cover towards the vertical center line of the mouth and nose mask cover. The protruding side of the claw is an arc structure. An elastic band passage gap is formed between the claw and the outer arc surface of the mouth and nose mask cover, which is used to fix the position of the elastic band. In the tensile state, the elastic band is locked on the mouth and nose mask cover, increasing the wearing stability.

[0008] A connecting bridge is provided between the inhalation valve seat and the exhalation valve seat; each connecting bridge is provided with a reinforcing rib, and a longitudinally penetrating bending groove is provided in the middle of the connecting bridge. The reinforcing ribs are located on both sides of the bending groove, and the cross-section of the reinforcing ribs is triangular. When the inhalation valve seat is bent and installed, the tops of the two reinforcing ribs on the same side come together to support each other.

[0009] The inner surface of the exhalation valve seat is provided with an exhalation valve plate, and the outer surface of the inhalation valve seat is provided with an inhalation valve seat. The exhalation valve seat consists of a limiting seat I and a sleeve I. The surface of the limiting seat I is limited to the inner surface of the mask of the filter mask, and the sleeve I extends out of the mouth and nose mask. A buckle is provided on the outer circumference of the sleeve, and the buckle is engaged with the hole of the exhalation port of the mask. A through hole is provided inside the sleeve I, and a grid I in the shape of a rotating blade is provided inside the through hole. A connecting post I is provided at the center of the inner surface of the grid I, and the exhalation valve plate is engaged on the connecting post I, and the exhalation valve plate is in contact with the grid I.

[0010] The intake valve seat consists of a limiting seat II and a sleeve II. The outer circumference of the sleeve II is provided with three evenly distributed protrusions, which are engaged with the filter element or filter component.

[0011] The sleeve II has a through hole that penetrates the limiting seat II, and the through hole has an X-shaped mesh II. The end of the limiting seat II that is in contact with the mask has a bevel. A connecting post II is provided at the center of the outer surface of the mesh II, and an air intake valve is snapped onto the connecting post II. The air intake valve is in contact with the outer surface of the mesh II.

[0012] Beneficial effects

[0013] This invention provides a self-priming filter mask with anti-toxic function. The mouth and nose mask serves as the main structure, providing mounting positions for the internal and external functional structures, allowing for a tight fit of the overall structure. The mouth and nose mask cover provides mounting positions for elastic bands, ensuring wearing effectiveness without occupying excessive mask space, facilitating the installation and setup of subsequent filter components. The valve seat assembly features bending grooves, allowing the inhalation valve seat to be bent and fit into the side holes of the mask, forming an integral structure with one exhalation valve seat and two inhalation valve seats, improving connection strength. Furthermore, the assembled valve seats provide mutual support, enhancing overall assembly strength. Through this structure, the filter mask achieves a compact overall structure, secure wear, and excellent performance. Attached Figure Description

[0014] Figure 1 This is a structural assembly drawing of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 for Figure 1 Schematic diagram of the mid-mouth nasal mask structure;

[0017] Figure 4 for Figure 3 Side view;

[0018] Figure 5 for Figure 1 Schematic diagram of the middle valve seat assembly;

[0019] Figure 6 for Figure 5 The main view;

[0020] Figure 7 A perspective view of the valve seat assembly structure without the exhalation and inhalation valves installed.

[0021] Figure 8 for Figure 7 Top view. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-2The diagram shows a self-priming filter mask with anti-toxic function, comprising, from the outside to the inside, a mouth and nose cover 1, a mouth and nose mask 2, and a valve seat assembly 3; the mouth and nose cover 1 has an air-guiding mesh 1-1 in the middle and elastic band limiting grooves 1-4 on both sides; the mouth and nose mask 2 has an exhalation port 2-1 in the middle and inhalation ports 2-2 on both sides, with a limiting post 2-3 between the exhalation port 2-1 and the inhalation port 2-2, the limiting post 2-3 being inserted into the elastic band limiting grooves 1-4 to fix the positions of the mouth and nose cover 1 and the mouth and nose mask 2; the valve seat assembly 3 consists of an exhalation valve seat 3-1 and an inhalation valve seat 3-2, the inhalation valve seat 3-2 being located on both sides of the exhalation valve seat 3-1, the exhalation valve seat 3-1 being snapped into position with the exhalation port 2-1 of the mask, and the exhalation valve seat 3-1 extending from the position of the inhalation valve seat 3-2 and snapping into the filter element. The above structure ensures a tight fit between the mouth and nose cover 1, the mouth and nose mask 2, and the valve seat assembly 3, making it easy to wear.

[0024] Among them, the mouth and nose cover 1, such as Figure 3-4 As shown, the mouth and nose mask 2 is installed on the outside of the filter mask. The mouth and nose cover is inwardly curved around the edges and protrudes outward in the lower middle part, with a smooth transition in the shape of a teardrop. This shape design makes the overall structure of the mouth and nose cover more compact, conforms to the human body structure, and provides a better wearing experience. Moreover, the teardrop shape design can reduce the area occupied by the mouth and nose cover on the side of the face while ensuring the filtration area at the mouth and nose, making the overall field of vision wider after wearing the mask, and facilitating the design and installation of other structures.

[0025] The mouth and nose mask has an air-guiding mesh 1-1 in the middle, which is the outermost protruding part of the main body of the mask. Its position corresponds to the mouth and nose, and it is positioned at the most prominent point to conform to the human body structure and shape, enhancing the user's experience. The air-guiding mesh 1-1 is composed of N horizontal strip supports connected together. These N horizontal strip supports have an inward and outward tilt angle. Using the horizontal center line as a reference, the horizontal strip supports below the center line tilt downwards on the outside and upwards on the inside, while the horizontal strip supports above the center line tilt upwards on the outside and downwards on the inside. This design can, to a certain extent, limit the airflow direction, deflecting exhaled humid air downwards and preventing water vapor from condensing on the wearer's glasses. Elastic band through-holes 1-2 are located at the upper left, lower left, upper right, and lower right of the mouth and nose mask. The elastic band through-holes 1-2 are rectangular holes. The upper elastic band through-hole 1-2 is higher on the side closer to the center and lower on the side closer to the left / right side; the lower elastic band through-hole 1-2 is lower on the side closer to the center and higher on the side closer to the left / right side. The elastic band forms a certain angle after passing through the elastic band through-holes 1-2, facilitating the positioning and wearing of the elastic band. Elastic band positioning structures 1-3 are provided between the upper left and lower left elastic band through-holes 1-2, and between the upper right and lower right elastic band through-holes 1-2. The elastic band positioning structure 1-3 is a claw structure. One side of the claw connects to the outer edge of the mouth and nose mask cover, and the other side protrudes outwards, extending along the arc of the outer surface of the mouth and nose mask cover towards the vertical center line of the cover. A gap is formed between the claw and the outer arc surface of the mouth and nose mask cover for the elastic band to pass through, used to fix the position of the elastic band. There are four elastic band positioning structures 1-3, with two on one side (upper and lower). This design increases the stability of the elastic band, preventing the entire mask from shifting easily after wearing. The extended side arc structure of the claws reduces the risk of damage to the elastic band.

[0026] Among them, valve seat assembly 3, such as Figure 5-8 As shown, it consists of an exhalation valve seat 3-1 and an inhalation valve seat 3-2. The inhalation valve seat 3-2 is located on both sides of the exhalation valve seat 3-1, and a connecting bridge 3-3 is provided between the inhalation valve seat 3-2 and the exhalation valve seat 3-1. A longitudinally penetrating bending groove 3-7 is provided in the middle of the connecting bridge 3-3, and reinforcing ribs 3-4 are located on both sides of the bending groove 3-7. The reinforcing ribs 3-4 have a triangular cross-section. When the inhalation valve seat 3-2 is bent and installed, the tops of the two reinforcing ribs 3-4 on the same side come together to support each other. An exhalation valve plate 3-5 is provided on the inner surface of the exhalation valve seat 3-1, which can ensure good airtightness under low resistance. An inhalation valve seat 3-6 is provided on the outer surface of the inhalation valve seat 3-2. The surface of the inhalation valve plate 3-6 has radial reinforcing ribs to reduce noise caused by irregular vibration.

[0027] The exhalation valve seat 3-1 consists of a limiting seat I3-11 and a sleeve I3-12. The surface of the limiting seat I3-11 is limited to the inner surface of the filter mask, and the sleeve I3-12 extends out of the mask. A buckle 3-13 is provided on the outer circumference of the sleeve, which engages with the opening in the mask. A through hole is provided inside the sleeve I3-12, penetrating the limiting seat I3-11, and a swirl-blade-shaped mesh I14 is provided inside the through hole. The filter material is placed inside the sleeve I3-12 and limited by the swirl-blade-shaped mesh I3-14, while simultaneously achieving the purpose of airflow with the inside of the mask. A connecting post I3-15 is provided at the center of the inner surface of the mesh I3-14, and an exhalation valve plate 3-5 is engaged on the connecting post I3-15. The exhalation valve plate 3-5 fits snugly against the mesh I3-14 to ensure the connectivity of the exhalation valve plate 3-5 during normal operation.

[0028] The inhalation valve seat 3-2 consists of a limiting seat II3-21 and a sleeve II3-22. The outer circumference of the sleeve II22 has three evenly distributed protrusions 3-23, which engage with the externally mounted filter element. A through-hole is located inside the sleeve II3-22, penetrating the limiting seat II3-21, and an X-shaped mesh II3-24 is provided within the through-hole. The filter material is placed inside the limiting seat II3-21 and is limited by the mesh II3-24, simultaneously allowing for airflow with the mask. A connecting post II3-25 is located at the center of the outer surface of the mesh II3-24, and an inhalation valve plate 3-6 is engaged with the connecting post II3-25. The inhalation valve plate 3-6 fits snugly against the outer surface of the mesh II3-24 to ensure the connectivity of the exhalation valve plate 3-5 during normal operation.

[0029] The end of the limiting seat II3-21 that is in contact with the mask is provided with a bevel 3-26. When the limiting seat II3-21 is tightly fitted with the mask, the suction valve seat 3-2 can be manually removed through the gap of the bevel 3-26 when it is necessary to remove the suction valve seat 3-2.

Claims

1. A self-priming filter mask with anti-toxic function, characterized in that: From the outside to the inside, it includes a mouth and nose cover (1), a mouth and nose mask (2), and a valve seat assembly (3); the mouth and nose cover (1) has an air guide mesh (1-1) in the middle and elastic band limiting grooves (1-4) on both sides; the mouth and nose mask (2) has a mask exhalation port (2-1) in the middle and mask inhalation ports (2-2) on both sides, and a limiting post (2-3) is provided between the mask exhalation port (2-1) and the mask inhalation port (2-2), and the limiting post (2-3) is inserted into the elastic band limiting groove (1-4). 4) Fix the positions of the mouth and nose cover (1) and the mouth and nose mask (2); the valve seat assembly (3) consists of an exhalation valve seat (3-1), an exhalation valve plate (3-5), an inhalation valve seat (3-2) and an inhalation valve plate (3-6). The inhalation valve seat (3-2) is located on both sides of the exhalation valve seat (3-1). The exhalation valve seat (3-1) is engaged with the exhalation port (2-1) of the mask. The exhalation valve seat (3-1) extends from the position of the inhalation valve seat (3-2) and engages with the filter element.

2. The self-priming filter mask with anti-toxic function according to claim 1, characterized in that: The mouth and nose mask cover (1) is folded inward around the perimeter and protrudes outward in the lower middle part, with a smooth transition and a teardrop-shaped arc. The mouth and nose mask cover has an air guide grid (1-1) in the middle, which is the outermost protruding part of the main body of the mouth and nose mask cover and corresponds to the position of the mask exhalation port (2-1) of the mouth and nose mask (2). The mouth and nose mask cover has elastic band through holes (1-2) at the upper left, lower left, upper right, and lower right. Elastic band positioning structures (1-3) are provided between the upper left and lower left elastic band through holes (1-2) and between the upper right and lower right elastic band through holes (1-2). The mouth and nose mask cover (1) is installed outside the mouth and nose mask (2), and the mask inhalation port (2-2) of the mouth and nose mask (2) is exposed outside the mouth and nose mask cover (1).

3. A self-priming filter mask with anti-toxic function according to claim 2, characterized in that: The air guide grid (1-1) is composed of N transverse strip supports connected together, and the N transverse strip supports have an inclination angle in the inner and outer directions.

4. A self-priming filter mask with anti-toxic function according to claim 2, characterized in that: The elastic band through hole (1-2) is a rectangular hole; the upper elastic band through hole (1-2) is higher on the side closer to the middle and lower on the side closer to the left / right side, and the lower elastic band through hole (1-2) is lower on the side closer to the middle and higher on the side closer to the left / right side; the elastic band forms a certain angle after passing through the elastic band through hole (1-2).

5. A self-priming filter mask with anti-toxic function according to claim 2, characterized in that: The elastic band positioning structure (1-3) is a claw structure. One side of the claw is connected to the outer edge of the mouth and nose cover, and the other side protrudes outward and extends along the arc of the outer arc surface of the mouth and nose cover towards the vertical center line of the mouth and nose cover. The protruding side of the claw is an arc structure. An elastic band passage gap is formed between the claw and the outer arc surface of the mouth and nose cover for fixing the position of the elastic band.

6. A self-priming filter mask with anti-toxic function according to claim 1, characterized in that: A connecting bridge (3-3) is provided between the inhalation valve seat (3-2) and the exhalation valve seat (3-1); each connecting bridge (3-3) is provided with a reinforcing rib (3-4), and a longitudinally penetrating bending groove (3-7) is provided in the middle of the connecting bridge (3-3). The reinforcing ribs (3-4) are located on both sides of the bending groove (3-7), and the cross section of the reinforcing ribs (3-4) is triangular. When the inhalation valve seat (3-2) is bent and installed, the tops of the two reinforcing ribs (3-4) on the same side are brought together to support each other.

7. A self-priming filter mask with anti-toxic function according to claim 1, characterized in that: The inner surface of the exhalation valve seat (3-1) is provided with an exhalation valve plate, and the outer surface of the inhalation valve seat (3-2) is provided with an inhalation valve plate (3-6); the exhalation valve seat (3-1) is composed of a limiting seat I (3-11) and a sleeve I (3-12), the surface of the limiting seat I (3-11) is limited to the inner surface of the filter mask, and the sleeve I (3-12) extends out of the mouth and nose mask (2); a buckle (3-13) is provided on the outer circumference of the sleeve, the buckle ( 3-13) It is snapped into the hole of the exhalation port (2-1) of the mask; a through hole of the limiting seat I (3-11) is provided in the sleeve I (3-12), and a grid I (3-14) in the shape of a rotary blade is provided in the through hole; a connecting post I (3-15) is provided at the center of the inner surface of the grid I (3-14), and an exhalation valve plate (3-5) is snapped onto the connecting post I (3-15), and the exhalation valve plate (3-5) is in contact with the grid I (3-14).

8. A self-priming filter mask with anti-toxic function according to claim 7, characterized in that: The intake valve seat (3-2) consists of a limiting seat II (3-21) and a sleeve II (3-22). The outer circumference of the sleeve II (3-22) is provided with three evenly distributed protrusions (3-23), which are engaged with the filter element or filter component.

9. A self-priming filter mask with anti-toxic function according to claim 8, characterized in that: The sleeve II (3-22) is provided with a through hole for the limiting seat II (3-21), and the through hole is provided with an X-shaped mesh II (3-24); the end of the limiting seat II (3-21) that is in contact with the mask is provided with a bevel (3-26); the center of the outer surface of the mesh II (3-24) is provided with a connecting post II (3-25), and an air intake valve plate (3-6) is snapped onto the connecting post II (3-25), and the air intake valve plate (3-6) is in contact with the outer surface of the mesh II (3-24).

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