Double-channel gas-defense and dust-proof mask

Abstract

The utility model relates to a double-channel gas-defense and dust-proof mask, and belongs to the technical field of protective equipment. The double-channel gas-defense and dust-proof mask comprises a mask body, a filter box, an exhalation cover, an inspiration valve element and an exhalation valve element. Filter boxes are mounted on the two sides of the mask body through clamping structures; the mask is characterized in that the mask body on the inner side of the filter box is provided with an air suction valve core through a ventilation structure; an exhalation valve core is arranged at the lower end of the mask body through a ventilation structure; and an exhalation cover is mounted on the mask body on the outer side of the exhalation valve core through a clamping structure. The double-channel gas-defense and dust-proof mask is compact in structure and ingenious in design, solves the problems that an existing dust-proof mask is prone to damage, unsmooth in circulation and prone to liquid collection inside, and meets the use requirements of people.

Description

Technical Field

[0001] This utility model relates to a dual-channel anti-toxic and dustproof face mask, belonging to the technical field of protective equipment. Background Technology

[0002] In hazardous work environments, workers need to wear masks to filter the air. Most existing masks are single-channel structures, which have the problem of a relatively small filtration area. To address this issue, dual-channel masks are currently available on the market, such as the integrated replaceable dual-filter mask disclosed in utility model patent CN220546479U. While this can solve some of the problems associated with single-channel masks, existing dual-channel masks still have the following issues:

[0003] First: The existing masks use a spring-loaded engagement structure between the filter tube and the mask body, and the spring is prone to damage.

[0004] Second: The filter element in the existing mask filter tube is too tightly fitted to the filter tube, which causes problems with poor gas flow.

[0005] Third: The existing face mask has poor ventilation, which leads to liquid accumulation inside the face mask during prolonged use.

[0006] Therefore, it is necessary to develop a new dual-channel gas and dust respirator to solve the above-mentioned problems of existing gas and dust respirators. Summary of the Invention

[0007] The purpose of this utility model is to provide a dual-channel gas and dust mask with a compact structure and ingenious design to solve the problems of easy damage, poor flow and easy liquid accumulation inside existing dust masks.

[0008] The technical solution of this utility model is:

[0009] A dual-channel gas and dust respirator includes a mask body, a filter cartridge, an exhalation hood, an inhalation valve core, and an exhalation valve core. The filter cartridges are mounted on both sides of the mask body via a snap-fit ​​structure. The mask body is characterized by having an inhalation valve core mounted on the inner side of the filter cartridge via a breathable structure; an exhalation valve core mounted on the lower end of the mask body via a breathable structure; and an exhalation hood mounted on the outer side of the exhalation valve core via a snap-fit ​​structure.

[0010] The aforementioned snap-fit ​​structure includes a snap-fit ​​sleeve and snap-fit ​​teeth; the outer surface of the mask body is provided with a snap-fit ​​sleeve; multiple snap-fit ​​teeth are spaced apart on the circumferential surface of the snap-fit ​​sleeve; the lower surface of the snap-fit ​​teeth has an inclined structure.

[0011] The filter box includes a spacer box, an inner box, and an outer box; the spacer box and the outer box are sequentially snapped onto the upper end of the inner box; the outer box has a vent A; the spacer box has multiple vents B; the inner box has a vent C; multiple locking teeth are spaced apart inside the vent C; and filter cartridges are installed inside the inner and outer boxes.

[0012] The bottom of the inner box and the surface of the spacer box are both provided with support ridges.

[0013] The exhalation mask has exhalation holes on its surface; and multiple locking teeth are spaced apart on the inner wall of the exhalation mask.

[0014] The breathable structure includes an assembly ring and a connecting rib; the mask body has a through hole; the assembly ring is installed inside the through hole; the assembly ring is connected to the through hole through the connecting rib.

[0015] Both the inhalation valve core and the exhalation valve core are integral structures, including a flexible sealing plate and a flexible assembly rod; the upper end of the flexible assembly rod is provided with a flexible sealing plate; and a limit ring groove is provided on the flexible assembly rod.

[0016] The advantages of this utility model are:

[0017] This dual-channel gas and dust respirator features a compact and ingenious design, employing a snap-fit ​​structure to install filter cartridges on both sides of the mask body. This design solves the problems of existing dust respirators, such as easy damage, poor airflow, and easy liquid accumulation inside, thus meeting people's usage needs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure in the AA direction;

[0022] Figure 5 This is a schematic diagram of the right-side structure of this utility model;

[0023] Figure 6 for Figure 5 Schematic diagram of the structure in the middle BB direction;

[0024] Figure 7 This is a schematic diagram of the structure of the filter box of this utility model;

[0025] Figure 8 This is a cross-sectional structural diagram of the filter box of this utility model;

[0026] Figure 9 This is a schematic diagram of the structure of the spacer box of the filter box of this utility model;

[0027] Figure 10 This is a schematic diagram of the inner box of the filter box of this utility model;

[0028] Figure 11 for Figure 7 A magnified structural diagram at point C;

[0029] Figure 12 This is a schematic diagram of the structure of this utility model after removing one filter box;

[0030] Figure 13 for Figure 12 Front view structural diagram;

[0031] Figure 14 for Figure 13 Schematic diagram of the structure in the DD direction;

[0032] Figure 15 for Figure 14 Enlarged structural diagram at point E;

[0033] Figure 16 This is a schematic diagram of the structure of the inhalation valve core and the exhalation valve core of this utility model;

[0034] Figure 17 This is a schematic diagram of the structure of the present invention that removes the exhalation mask;

[0035] Figure 18 This is a schematic diagram of the exhalation mask of this utility model;

[0036] Figure 19 for Figure 17 Enlarged structural diagram at point F;

[0037] Figure 20 for Figure 4 A magnified structural diagram at point G in the middle;

[0038] Figure 21 for Figure 12 A magnified structural diagram of point H in the middle.

[0039] In the diagram: 1. Mask body; 2. Clip-on structure; 3. Filter box; 4. Ventilation structure; 5. Inhalation valve core; 6. Exhalation valve core; 7. Flexible assembly rod; 8. Exhalation mask; 9. Clip-on sleeve; 10. Clip-on teeth; 11. Inner box; 12. Spacer box; 13. Outer box; 14. Ventilation hole A; 15. Ventilation hole B; 16. Ventilation hole C; 17. Clip-on teeth; 18. Support ridge; 19. Exhalation hole; 20. Limiting ring groove; 21. Through hole; 22. Assembly ring; 23. Connecting rib; 24. Flexible sealing plate. Detailed Implementation

[0040] This dual-channel gas and dust respirator includes a mask body 1, a filter cartridge 3, an exhalation hood 8, an inhalation valve core 5, and an exhalation valve core 6 (see instruction manual appendix). Figure 1 , 2 and 3).

[0041] Filter boxes 3 are installed on both sides of the mask body 1 via a snap-fit ​​structure 2 (see instruction manual). Figure 1 and 2 ).

[0042] The mounting structure 2 includes a mounting sleeve 9 and mounting teeth 10 (see the instruction manual). Figure 14 and 21 The outer surface of the mask body 1 is provided with a snap-fit ​​sleeve 9; multiple snap-fit ​​teeth 10 are spaced apart on the circumferential surface of the snap-fit ​​sleeve 9; the lower surface of the snap-fit ​​teeth 10 is inclined (see the instruction manual appendix). Figure 21 ).

[0043] Filter box 3 includes a spacer box 12, an inner box 11, and an outer box 13 (see instruction manual appendix). Figure 7-11 The inner box 11 is fitted with a spacer box 12 and an outer box 13 in sequence at its upper end; the outer box 13 is provided with a vent hole A14; the spacer box 12 is provided with a plurality of vent holes B15; the inner box 11 is provided with a vent hole C16; the inner box 11 and the outer box 13 are filled with filter cartridges (not shown in the attached drawings of the instruction manual).

[0044] Supporting ribs 18 are provided at the bottom of the inner box 11 and on the surface of the spacer box 12 (see the instruction manual). Figure 9 and 10 ).

[0045] The purpose of the support ridge 18 is to ensure that, during assembly, the filter element inside the inner box 11 has a certain gap with the bottom surface of the inner box 11 due to the spacing effect of the support ridge 18, and is sealed to the lower surface of the spacer box 12. Simultaneously, the filter element in the outer box 13, under the action of the support ridge 18 of the spacer box 12, will have a certain gap with the upper surface of the spacer box 12 and be sealed to the outer box 13. This arrangement achieves two goals: firstly, it allows the filter box 3 to contain two sets of filter elements, resulting in better filtration; secondly, it ensures that the upper surface of the filter element is sealed to the filter box 3, while the lower surface has a certain gap due to the support ridge 18. This allows all gas to pass through the filter element during flow, preventing leakage, and also allows the filtered gas to pass quickly through the gaps in the support ridge 18, reducing gas flow resistance.

[0046] The vent C16 has multiple locking teeth 17 spaced inside (see instruction manual). Figure 7 and 11 During assembly, first align the vent C16 with the mounting sleeve 9 on the mounting structure 2, and offset the locking teeth 17 and 10. Then, insert the filter box 3 into the mounting sleeve 9, and rotate the filter box 3 to engage the locking teeth 17 and 10. This completes the assembly of the filter box 3. During this process, because the lower surface of the locking teeth 10 is inclined, the locking teeth 17 of the filter box 3 will gradually lock in place as they engage with the locking teeth 10. When it is necessary to disassemble the filter box 3, simply rotate the filter box 3 in the opposite direction to disengage it from the locking teeth 10. This allows for quick disassembly and installation of the filter box 3, and it achieves the detachable function without using springs, thus solving the problem of easy damage to springs in existing structures that use spring-loaded locking mechanisms.

[0047] The intake valve core 5 is installed on the mask body 1 inside the filter box 3 through the ventilation structure 4 (see instruction manual). Figure 14 and 15 The lower end of the mask body 1 is equipped with an exhalation valve core 6 through a breathable structure 4 (see instruction manual appendix). Figure 3 and 20 ).

[0048] The purpose of installing the exhalation valve core 6 at the lower end of the mask body 1 is to allow the exhaled air to be quickly discharged through the exhalation valve core 6, thereby avoiding the problem of water vapor in the exhaled air accumulating inside the mask body 1 and causing liquid accumulation.

[0049] The breathable structure 4 includes an assembly ring 22 and a connecting rib plate 23; the mask body 1 is provided with a through hole 21; the assembly ring 22 is provided in the through hole 21; the assembly ring 22 is connected to the through hole 21 through the connecting rib plate 23.

[0050] Both the inhalation valve core 5 and the exhalation valve core 6 are integral structures, including a flexible sealing plate 24 and a flexible assembly rod 7; the upper end of the flexible assembly rod 7 is provided with the flexible sealing plate 24; the flexible assembly rod 7 is provided with a limiting annular groove 20 (see the appendix of the instruction manual). Figure 16 ).

[0051] During assembly, the flexible assembly rod 7 is inserted into the assembly ring 22 of the corresponding ventilated structure 4, and the limiting ring groove 20 of the flexible assembly rod 7 is snapped into the assembly ring 22; thus, the assembly of the inhalation valve core 5 and the exhalation valve core 6 can be realized.

[0052] The flexible sealing plate 24 of the exhalation valve core 6 is located on the outer surface of the mask body 1 (see the instruction manual appendix). Figure 20 When set up in this way, when the exhaled gas is discharged from inside the mask body 1 to the outside, it can push the flexible sealing plate 24 to deform and discharge outward; after the exhaled gas is discharged outward, the flexible sealing plate 24 quickly resets and seals the ventilation structure 4 at the lower end of the mask body 1, thus achieving one-way ventilation and preventing external gas from entering the mask body 1 through the exhalation valve core 6.

[0053] The flexible sealing plate 24 of the intake valve core 5 is located on the inner surface of the mask body 1 (see the instruction manual appendix). Figure 15 When configured in this way, the gas filtered by the filter box 3 can push the flexible sealing plate 24 to deform and enter the interior of the mask body 1; after the gas enters the interior of the mask body 1, the flexible sealing plate 24 quickly resets and seals the breathable structure 4 on the side of the mask body 1; thus, one-way ventilation can be achieved, preventing the exhaled gas from entering the filter box 3 in the opposite direction.

[0054] An exhalation mask 8 is mounted on the mask body 1 outside the exhalation valve core 6 via a snap-fit ​​structure 2 (see instruction manual appendix). Figure 4 and 20 ).

[0055] The surface of the exhalation mask 8 is provided with exhalation holes 19 (see the instruction manual). Figure 18 The inner wall of the exhalation mask 8 is provided with multiple locking teeth 17 at intervals (see the instruction manual). Figure 18 During assembly, the exhalation mask 8 can be detachably mounted on the mask body 1 via the snap-fit ​​teeth 17 and the engaging structure 2. During operation, the exhaled gas can be discharged through the exhalation port 19.

[0056] This dual-channel gas and dust respirator features a compact and ingenious design, employing a structure in which filter cartridges 3 are mounted on both sides of the mask body 1 via a snap-fit ​​mechanism 2. This design solves the problems of easy damage, poor airflow, and easy liquid accumulation inside existing dust respirators, thus meeting people's usage needs.

Claims

1. A double-channel anti-toxic and anti-dust mask, comprising a mask body (1), a filter box (3), an exhalation cover (8), an inhalation valve core (5) and an exhalation valve core (6); the filter box (3) is installed on both sides of the mask body (1) through a clamping structure (2); characterized in that: The filter box (3) is provided with an air suction valve core (5) on the inner side of the mask body (1) through the air permeable structure (4); the lower end of the mask body (1) is provided with an air exhalation valve core (6) through the air permeable structure (4); the outer side of the air exhalation valve core (6) is provided with an exhalation cover (8) through the clamping structure (2).

2. A dual channel anti-pollution and dust mask as claimed in claim 1, wherein: The clamping structure (2) comprises a clamping sleeve (9) and a clamping tooth (10); the outer surface of the mask body (1) is provided with the clamping sleeve (9); a plurality of clamping teeth (10) are arranged on the circumferential surface of the clamping sleeve (9) at intervals; the lower surface of the clamping tooth (10) is inclined.

3. A dual channel anti-pollution and dust mask as claimed in claim 1, wherein: The filter box (3) comprises a spacing box body (12), an inner box body (11) and an outer box body (13); the upper end of the inner box body (11) is sequentially provided with the spacing box body (12) and the outer box body (13); the outer box body (13) is provided with an air permeable hole A (14); the spacing box body (12) is provided with a plurality of air permeable holes B (15); the inner box body (11) is provided with an air permeable hole C (16); a plurality of clamping teeth (17) are arranged in the air permeable hole C (16) at intervals; the inner box body (11) and the outer box body (13) are internally provided with filter cartridges.

4. A dual channel anti-pollution and dust mask as claimed in claim 3, wherein: The bottom end of the inner box body (11) and the surface of the spacing box body (12) are both provided with support edges (18).

5. A dual channel anti-pollution and dust mask as claimed in claim 1, wherein: The surface of the exhalation cover (8) is provided with an air exhalation hole (19); a plurality of clamping teeth (17) are arranged on the inner wall of the exhalation cover (8) at intervals.

6. A dual channel anti-pollution and dust mask as claimed in claim 1, wherein: The air permeable structure (4) comprises an assembly ring (22) and a connecting rib plate (23); the mask body (1) is provided with a through hole (21); the through hole (21) is provided with the assembly ring (22); the assembly ring (22) is connected with the through hole (21) through the connecting rib plate (23).

7. A dual channel anti-pollution and dust mask as claimed in claim 6, wherein: The air suction valve core (5) and the air exhalation valve core (6) are both of an integrated structure, comprising a flexible sealing plate (24) and a flexible assembly rod (7); the upper end of the flexible assembly rod (7) is provided with the flexible sealing plate (24); the flexible assembly rod (7) is provided with a limiting ring groove (20).

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