Multi-layer protective mask with breather valve

Abstract

The utility model discloses a multi-layer protective mask with a breather valve, which relates to the technical field of protective masks, and comprises a mask body, the front side of the mask body is provided with a breathing round hole, and the front side of the breathing round hole is provided with a breather valve convenient dismounting and fixing assembly fixedly connected with the front side wall of the mask body. A breather valve is clamped in the breather valve convenient dismounting and fixing assembly, and a multi-layer protection assembly is arranged in the mask body. According to the mask, various impurities with different granularities in air can be intercepted and filtered through the multiple layers of protection assemblies, so that the fully filtered and purified air can be comfortably inhaled by a user, and the user can easily detach the breather valve from the mask through the arranged breather valve convenient detaching and fixing assembly, so that the user can conveniently detach the breather valve from the mask. The breathing valve is greatly convenient to replace in time, it is ensured that the breathing function of the mask is in a good state all the time, meanwhile, the old breathing valve is replaced, and the protection effect of the mask can be improved.

Description

Technical Field

[0001] This utility model relates to the field of protective mask technology, specifically to a multi-layer protective mask with a breathing valve. Background Technology

[0002] Multi-layer protective masks with exhalation valves are specially designed to provide more effective protection while ensuring wearer comfort. These masks are typically equipped with a one-way valve. When the wearer exhales, the positive pressure of the exhaled air opens the valve, quickly expelling the exhaled air, reducing exhalation resistance, and preventing excessive accumulation of hot and humid air inside the mask, thus reducing stuffiness. During inhalation, negative pressure automatically closes the valve, ensuring that pollutants from the external environment do not enter the mask through the valve, thereby protecting the wearer's respiratory health. This type of mask is suitable for various environments, such as industrial dust protection, smog protection, and daily protection. However, existing technologies have the following drawbacks:

[0003] Existing multi-layered protective masks with exhalation valves lack multi-layered protective components. Relying solely on a single protective layer, they struggle to effectively intercept particles of varying sizes. This means that the air entering the mask may still contain a significant amount of unfiltered impurities, failing to provide clean and safe breathing air for the user. Furthermore, the lack of easily removable and secure exhalation valves in existing protective masks makes it impossible to replace them properly, affecting the mask's continued use. Due to the difficulty in disassembly, when the exhalation valve malfunctions or its performance deteriorates, users often cannot replace it promptly and are forced to continue using the faulty valve. This prevents the mask's breathing function from being restored in a timely manner, impacting the user's breathing comfort and potentially reducing the mask's protective effectiveness. Utility Model Content

[0004] This invention provides a multi-layer protective mask with a breathing valve to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A multi-layer protective mask with a breathing valve includes a mask body. Upper elastic bands are fixedly connected to the upper left and right sides of the mask body, and lower elastic bands are fixedly connected to the lower left and right sides of the mask body. A metal nose clip is fixedly connected to the upper front side of the mask body. A breathing hole is provided on the front side of the mask body. A convenient detachable and fixed assembly for a breathing valve is provided on the front side of the breathing hole and fixedly connected to the front side wall of the mask body. The breathing valve is internally engaged in the convenient detachable and fixed assembly. A metal face clip is fixedly connected to the bottom front side of the mask body. A TPE face-fitting strip that conforms to the face is fixedly connected to the rear edge of the mask body. Multiple protective components are provided inside the mask body.

[0007] A further improvement of this utility model is that: the front outer wall of the mask body is provided with a waterproof coating, and the rear inner wall of the mask body is provided with a skin-friendly non-woven fabric layer.

[0008] A further improvement of the present invention is that the multi-layer protective component includes a meltblown nonwoven fabric layer, which is fixedly connected to the front inner side of the mask body. A filter-reinforcing nanofiber layer is fixedly connected to the middle inner side of the mask body, and a chitosan nonwoven fabric layer is fixedly connected to the rear inner side of the mask body.

[0009] A further improvement of this utility model is that: the convenient disassembly and fixing assembly of the breathing valve includes a fixing ring, the rear side of which is fixedly connected to the front sidewall of the mask body, a rotating ring is rotatably connected inside the fixing ring, and two symmetrically arranged annular grooves are opened on the outer wall of the fixing ring. A fixing post is fixedly connected to the left side of the inner side of each of the two annular grooves, and a spring is fixedly connected to the outer wall of each of the two fixing posts. A fixing bolt located inside the annular groove is fixedly connected to the end of each of the two springs away from the fixing post. The ends of the two fixing bolts that are close to each other penetrate into the interior of the fixing ring and are fixedly connected to the outer wall of the rotating ring.

[0010] A further improvement of this utility model is that: an annular groove 2 is provided on the right side of the outer wall of the fixed ring, and an adjusting rod is slidably connected inside the annular groove 2. The left side of the adjusting rod passes through the interior of the fixed ring and is fixedly connected to the outer wall of the rotating ring. Several rotating shafts arranged in an annular array are fixedly connected to the front side of the rotating ring. Triangular fixing blocks are rotatably connected to the outer walls of the several rotating shafts. A cylindrical slider is fixedly connected to the end of the triangular fixing block away from the rotating shaft. Several grooves arranged in an annular array are provided on the front side of the fixed ring. The bottom of the cylindrical slider is slidably connected to the inner wall of the groove. A sealing gasket that fits tightly against the rear side wall of the breathing valve is provided inside the rotating ring.

[0011] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0012] 1. This utility model provides a multi-layer protective mask with a breathing valve. Through the multi-layer protective components, it can intercept and filter impurities of different particle sizes in the air. Moreover, due to its good skin-friendliness, it can make users feel more comfortable when wearing the mask, so that the air after being fully filtered and purified can be comfortably inhaled by the user.

[0013] 2. This utility model provides a multi-layer protective mask with a breathing valve. The breathing valve allows for easy removal and fixing of the mask's fixing components. Users can easily remove the breathing valve from the mask without the need for complicated tools or professional skills. Ordinary users can complete this process at home, greatly facilitating the timely replacement of the breathing valve and ensuring that the mask's breathing function is always in good condition. At the same time, when the breathing valve malfunctions or its performance deteriorates, the old breathing valve can be replaced by easily removing and fixing the fixing components, improving the user's breathing comfort and enhancing the mask's protective effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0018] Figure 5 This is a schematic diagram of the structure of the convenient disassembly and fixing component of the breathing valve of this utility model;

[0019] Figure 6 This is another schematic diagram of the structure of the convenient disassembly and fixing component of the breathing valve according to this utility model.

[0020] In the diagram: 10. Mask body; 11. Upper elastic band; 12. Lower elastic band; 13. Metal nose clip; 14. Breathing valve; 15. Metal face clip; 16. TPE face-fitting strip; 17. Breathing hole; 2. Multi-layer protective components; 20. Meltblown nonwoven fabric layer; 21. Filter-reinforced nanofiber layer; 22. Chitosan nonwoven fabric layer; 3. Easy-to-disassemble and fixation components for the breathing valve; 30. Fixing ring; 31. Rotating ring; 32. Annular groove one; 33. Fixing post; 34. Spring; 35. Fixing bolt; 36. Adjusting rod; 37. Groove; 38. Rotating shaft; 39. Triangular fixing block; 390. Cylindrical slider; 391. Sealing gasket; 392. Annular groove two. Detailed Implementation

[0021] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0022] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a multi-layer protective mask with a breathing valve, including a mask body 10. Upper elastic bands 11 are fixedly connected to the upper left and right sides of the mask body 10, and lower elastic bands 12 are fixedly connected to the lower left and right sides of the mask body 10. A metal nose clip 13 is fixedly connected to the upper front side of the mask body 10. A breathing hole 17 is provided on the front side of the mask body 10. A convenient detachable fixing component 3 for the breathing valve is fixedly connected to the front side wall of the mask body 10. A breathing valve 14 is snapped into the interior of the convenient detachable fixing component 3. A metal face clip 15 is fixedly connected to the bottom front side of the mask body 10. A TPE face-fitting strip 16 that fits the face is fixedly connected to the rear edge of the mask body 10. A multi-layer protective component 2 is provided inside the mask body 10.

[0023] When a user picks up the mask to put it on, the upper elastic bands 11 on the upper left and right sides of the mask body 10 and the lower elastic bands 12 on the lower left and right sides come into play. They rely on their own elasticity to adapt to different head sizes, ensuring that the mask will not easily slip off during wear and maintain a stable wearing position. The metal nose clip 13 and metal face clip 15 located on the upper front of the mask body 10 can be manually shaped according to the shape of the user's nose bridge and face, effectively preventing air from leaking in from the nose bridge or exhaled air from escaping from that area, ensuring the protective effect of the mask. The TPE face fit strip 16 will fit tightly to the edge of the face. Its soft material can better adapt to changes in the facial contours, fill any small gaps that may exist between the face and the mask, further preventing outside air from entering from the edge of the mask and improving the overall protective performance of the mask.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, the front outer wall of the mask body 10 is provided with a waterproof coating, and the rear inner wall of the mask body 10 is provided with a skin-friendly non-woven fabric layer.

[0025] like Figure 3 , Figure 4 As shown, the multi-layer protective component 2 includes a meltblown nonwoven fabric layer 20, which is fixedly connected to the front inside of the mask body 10. A filter-reinforcing nanofiber layer 21 is fixedly connected to the middle inside of the mask body 10, and a chitosan nonwoven fabric layer 22 is fixedly connected to the rear inside of the mask body 10.

[0026] When outside air attempts to enter the mask, the meltblown nonwoven fabric layer 20 first functions as a filter. Relying on its fiber structure and physical properties, it effectively blocks larger particles of dust, droplets, and other impurities. These larger particles are intercepted by the fibers of the meltblown nonwoven fabric layer 20 upon contact, preventing them from passing through and thus initially purifying the air entering the mask. Next, the air passes through the filter-enhancing nanofiber layer 21, located in the middle of the mask body 10. Its fiber diameter reaches the nanometer level. Due to its extremely small fiber diameter and special fiber arrangement, it can perform a more refined filtration of the air after the initial filtration by the meltblown nonwoven fabric layer 20. Smaller particles, bacteria, and other tiny impurities are captured by the nanofibers of the filter-enhancing nanofiber layer 21, further improving the air purification level and greatly enhancing the mask's protective ability against tiny harmful substances. Finally, the chitosan nonwoven fabric layer 22 not only possesses certain filtration performance, capable of final interception and filtration of the remaining trace impurities, but also, due to its good skin-friendliness, makes the user feel more comfortable when wearing the mask, allowing the fully filtered and purified air to be comfortably inhaled.

[0027] like Figure 5 , Figure 6 As shown, the convenient disassembly and fixing assembly 3 of the breathing valve includes a fixing ring 30. The rear side of the fixing ring 30 is fixedly connected to the front side wall of the mask body 10. A rotating ring 31 is rotatably connected inside the fixing ring 30. Two annular grooves 32 are symmetrically arranged on the outer wall of the fixing ring 30. A fixing post 33 is fixedly connected to the left side of the inner ... outer side of the inner side of the inner side of the inner side of the inner side of the inner side of the outer side of the inner side of the inner side of the inner side of the inner side of the outer side of the inner side of the inner side of the inner side of the inner side of the outer side of the inner side of the inner side of the inner side of the outer side of the outer side of the rotating ring 31.

[0028] like Figure 5 , Figure 6 As shown, an annular groove 392 is provided on the right side of the outer wall of the fixed ring 30. An adjusting rod 36 is slidably connected inside the annular groove 392. The left side of the adjusting rod 36 extends into the interior of the fixed ring 30 and is fixedly connected to the outer wall of the rotating ring 31. Several rotating shafts 38 arranged in annular array are fixedly connected to the front side of the rotating ring 31. Triangular fixing blocks 39 are rotatably connected to the outer walls of the several rotating shafts 38. A cylindrical slider 390 is fixedly connected to the end of the triangular fixing block 39 away from the rotating shaft 38. Several grooves 37 arranged in annular array are provided on the front side of the fixed ring 30. The bottom of the cylindrical slider 390 is slidably connected to the inner wall of the groove 37. A sealing gasket 391 is provided inside the rotating ring 31 to fit tightly against the rear side wall of the breathing valve 14.

[0029] When it is necessary to disassemble or replace the breathing valve 14, first rotate the adjusting rod 36. The adjusting rod 36 drives the rotating ring 31 to rotate. At this time, the rotating shaft 38 on the front side of the rotating ring 31 drives the triangular fixing block 39 to rotate, so that the cylindrical slider 390 slides in the groove 37. The triangular fixing block 39 gradually loosens its fixation on the breathing valve 14. At the same time, during the rotation of the rotating ring 31, due to the elastic force of the spring 34 in the annular groove 32 on the outer wall of the fixing ring 30, the fixing bolt 35 will move with the rotation of the rotating ring 31, but always maintain a certain restriction on the rotating ring 31 to prevent the rotating ring 31 from rotating excessively. When the triangular fixing block 39 completely loosens the breathing valve 14, the breathing valve 14 can be removed from the breathing valve easy disassembly and fixing assembly 3. Then, a new breathing valve 14 is inserted. The spring 34 will return to its original position due to the elastic force, driving the triangular fixing block 39 to fix the new breathing valve 14. This allows for the disassembly and replacement of the breathing valve 14. During normal use, the sealing gasket 391 inside the rotating ring 31 fits tightly against the rear wall of the breathing valve 14, ensuring that outside air can only enter through the normal passage of the breathing valve 14 and not through the gap between the breathing valve 14 and the rotating ring 31. The convenient disassembly and fixing component 3 allows users to easily remove the breathing valve 14 from the mask. This process does not require complex tools or professional skills and can be completed by ordinary users at home, greatly facilitating timely replacement of the breathing valve and ensuring the mask's breathing function remains in good condition. Furthermore, when the breathing valve malfunctions or its performance deteriorates, the convenient disassembly and fixing component 3 allows for replacement of the breathing valve 14, improving the user's breathing comfort and enhancing the mask's protective effect.

[0030] It should be noted that the breathing valve 14, TPE face bonding strip 16, meltblown nonwoven fabric layer 20, filter-reinforcing nanofiber layer 21, and chitosan nonwoven fabric layer 22 are all existing technologies and will not be described in detail here.

[0031] The working principle of this multi-layer protective mask with a breathing valve will be explained in detail below.

[0032] like Figure 1-6As shown, when a user picks up the mask to wear it, the upper elastic bands 11 on the left and right sides of the mask body 10 and the lower elastic bands 12 on the left and right sides come into play. They rely on their own elasticity to adapt to different head sizes, ensuring that the mask will not easily slip off during wear and maintain a stable wearing position. The metal nose clip 13 and metal face clip 15 located on the upper front of the mask body 10 can be manually shaped according to the shape of the user's nose bridge and face, effectively preventing air from leaking in from the nose bridge or exhaled air from escaping from that area, ensuring the protective effect of the mask. The TPE face-fitting strip 16 will fit tightly to the edge of the face. Its soft material can better adapt to changes in the facial contour, fill any small gaps that may exist between the face and the mask, further preventing outside air from entering from the edge of the mask and improving the overall protective performance of the mask.

[0033] When outside air attempts to enter the mask, the meltblown nonwoven fabric layer 20 first functions as a filter. Relying on its fiber structure and physical properties, it effectively blocks larger particles of dust, droplets, and other impurities. These larger particles are intercepted by the fibers of the meltblown nonwoven fabric layer 20 upon contact, preventing them from passing through and thus initially purifying the air entering the mask. Next, the air passes through the filter-enhancing nanofiber layer 21, located in the middle of the mask body 10. Its fiber diameter reaches the nanometer level. Due to its extremely small fiber diameter and special fiber arrangement, it can perform a more refined filtration of the air after the initial filtration by the meltblown nonwoven fabric layer 20. Smaller particles, bacteria, and other tiny impurities are captured by the nanofibers of the filter-enhancing nanofiber layer 21, further improving the air purification level and greatly enhancing the mask's protective ability against tiny harmful substances. Finally, the chitosan nonwoven fabric layer 22 not only possesses certain filtration performance, capable of final interception and filtration of the remaining trace impurities, but also, due to its good skin-friendliness, makes the user feel more comfortable when wearing the mask, allowing the fully filtered and purified air to be comfortably inhaled.

[0034] When it is necessary to disassemble or replace the breathing valve 14, first rotate the adjusting rod 36. The adjusting rod 36 drives the rotating ring 31 to rotate. At this time, the rotating shaft 38 on the front side of the rotating ring 31 drives the triangular fixing block 39 to rotate, so that the cylindrical slider 390 slides in the groove 37. The triangular fixing block 39 gradually loosens its fixation on the breathing valve 14. At the same time, during the rotation of the rotating ring 31, due to the elastic force of the spring 34 in the annular groove 32 on the outer wall of the fixing ring 30, the fixing bolt 35 will move with the rotation of the rotating ring 31, but always maintain a certain restriction on the rotating ring 31 to prevent the rotating ring 31 from rotating excessively. When the triangular fixing block 39 completely loosens the breathing valve 14, the breathing valve 14 can be removed from the breathing valve easy disassembly and fixing assembly 3. Then, a new breathing valve 14 is inserted. The spring 34 will return to its original position due to the elastic force, driving the triangular fixing block 39 to fix the new breathing valve 14. This allows for the disassembly and replacement of the breathing valve 14. During normal use, the sealing gasket 391 inside the rotating ring 31 fits tightly against the rear wall of the breathing valve 14, ensuring that outside air can only enter through the normal passage of the breathing valve 14 and not through the gap between the breathing valve 14 and the rotating ring 31. The convenient disassembly and fixing component 3 allows users to easily remove the breathing valve 14 from the mask. This process does not require complex tools or professional skills and can be completed by ordinary users at home, greatly facilitating timely replacement of the breathing valve and ensuring the mask's breathing function remains in good condition. Furthermore, when the breathing valve malfunctions or its performance deteriorates, the convenient disassembly and fixing component 3 allows for replacement of the breathing valve 14, improving the user's breathing comfort and enhancing the mask's protective effect.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A multi-layer protective mask with a breathing valve, comprising a mask body (10), characterized in that: The upper left and right sides of the mask body (10) are fixedly connected with upper elastic bands (11), the lower left and right sides of the mask body (10) are fixedly connected with lower elastic bands (12), the upper front side of the mask body (10) is fixedly connected with a metal nose clip (13), the front side of the mask body (10) is provided with a breathing hole (17), the front side of the breathing hole (17) is provided with a breathing valve easy-to-remove fixing component (3) fixedly connected to the front side wall of the mask body (10), the breathing valve easy-to-remove fixing component (3) is fitted with a breathing valve (14), the bottom front side of the mask body (10) is fixedly connected with a metal face clip (15), the rear edge of the mask body (10) is fixedly connected with a TPE face-fitting strip (16) that fits the face, and the inside of the mask body (10) is provided with a multi-layer protective component (2).

2. A multi-layer protective mask with a breathing valve according to claim 1, characterized in that: The front outer wall of the mask body (10) is provided with a waterproof coating, and the rear inner wall of the mask body (10) is provided with a skin-friendly non-woven fabric layer.

3. A multi-layer protective mask with a breathing valve according to claim 1, characterized in that: The multi-layer protective component (2) includes a meltblown nonwoven fabric layer (20), which is fixedly connected to the front inside of the mask body (10). A filter-enhancing nanofiber layer (21) is fixedly connected to the middle inside of the mask body (10), and a chitosan nonwoven fabric layer (22) is fixedly connected to the rear inside of the mask body (10).

4. A multi-layer protective mask with a breathing valve according to claim 1, characterized in that: The convenient disassembly and fixing assembly (3) of the breathing valve includes a fixing ring (30). The rear side of the fixing ring (30) is fixedly connected to the front side wall of the mask body (10). A rotating ring (31) is rotatably connected inside the fixing ring (30). Two annular grooves (32) are symmetrically arranged on the outer wall of the fixing ring (30). A fixing post (33) is fixedly connected to the left side of the inner side of the two annular grooves (32). A spring (34) is fixedly connected to the outer wall of the two fixing posts (33). A fixing bolt (35) located inside the annular groove (32) is fixedly connected to the end of the two springs (34) away from the fixing post (33). The ends of the two fixing bolts (35) that are close to each other penetrate into the interior of the fixing ring (30) and are fixedly connected to the outer wall of the rotating ring (31).

5. A multi-layer protective mask with a breathing valve according to claim 4, characterized in that: The outer wall of the fixed ring (30) has an annular groove 2 (392) on the right side. An adjusting rod (36) is slidably connected inside the annular groove 2 (392). The left side of the adjusting rod (36) extends through the interior of the fixed ring (30) and is fixedly connected to the outer wall of the rotating ring (31). The front side of the rotating ring (31) is fixedly connected to a number of rotating shafts (38) arranged in an annular array. The outer walls of the rotating shafts (38) are rotatably connected to triangular fixing blocks (39). The end of the triangular fixing block (39) away from the rotating shaft (38) is fixedly connected to a cylindrical slider (390). The front side of the fixed ring (30) has a number of grooves (37) arranged in an annular array. The bottom of the cylindrical slider (390) is slidably connected to the inner wall of the groove (37). The interior of the rotating ring (31) is provided with a sealing gasket (391) that fits tightly against the rear side wall of the breathing valve (14).

Images