Dust-proof respirator

Abstract

The utility model discloses a dustproof breathing mask relates to breathing mask technical field, including half mask main part, the outside of half mask main part is provided with air inlet component, filter component, air outlet component and fixed component, and fixed component sets up in the outside both ends of half mask main part, and air outlet component sets up in the lower part of half mask main part, and air inlet component sets up in the upper part of half mask main part, and air inlet component and filter component are connected. The utility model discloses above -mentioned dustproof breathing mask, when filter core adsorbs dust to reach saturation state, only need to take down old filter core and replace new filter core, can make breathing mask restore high -efficient filtration performance rapidly, avoid the protection invalidity caused by filter core blockage, adopt the design of replaceable filter core and reduce the use cost, do not need to discard whole breathing mask because of filter core invalidity, reduce resource waste, and different types of filter core can adapt to multiple dust environment, improve the protection pertinence, satisfy the diversified industrial scene demand, effectively prolong the service life of mask.

Description

Technical Field

[0001] This utility model relates to the field of breathing mask technology, and in particular to a dustproof breathing mask. Background Technology

[0002] In industrial production sectors such as mining, metallurgy, and construction, dust pollution remains a significant threat to workers' health. Long-term inhalation of large amounts of dust can easily lead to serious occupational diseases such as pneumoconiosis and respiratory illnesses. Respiratory masks, as crucial equipment for ensuring workers' respiratory safety, play a vital protective role by intercepting and filtering airborne dust particles through their internal filters.

[0003] Currently, most existing breathing masks adopt a one-piece design, with the filter tightly integrated into the mask body, making it non-replaceable. While these masks can meet basic dust protection needs initially, the filter gradually becomes clogged with dust over time, significantly reducing filtration efficiency and thus lowering protective performance. Furthermore, because the filter cannot be replaced individually, once its filtration capacity deteriorates, the entire mask must be discarded and replaced, which not only significantly increases operating costs but also results in substantial resource waste. Utility Model Content

[0004] The purpose of this invention is to provide a dustproof breathing mask to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a dustproof breathing mask, including a half-mask body. An air inlet assembly, a filter assembly, an air outlet assembly, and a fixing assembly are provided on the outer side of the half-mask body. The fixing assembly is located at both ends of the outer side of the half-mask body, the air outlet assembly is located at the lower part of the half-mask body, and the air inlet assembly is located at the upper part of the half-mask body. The air inlet assembly and the filter assembly are connected.

[0006] Preferably, a flexible contact layer is provided on the inner side of the half-mask body.

[0007] Preferably, the air intake assembly includes an air intake port formed on the half-mask body, an air intake ring sleeve is provided on the air intake port, an air intake valve plate and a fan blade retainer are provided inside the air intake ring sleeve, a limiting member is provided at the center of the fan blade retainer, and the limiting member passes through the central through hole of the air intake valve plate. Two L-shaped snap-fit ​​grooves are formed on the outer surface of the intake ring sleeve.

[0008] Preferably, the filter assembly includes a filter box, the bottom of which has a connection hole, and two snap-fit ​​blocks are provided inside the connection hole. The two snap-fit ​​blocks and the two snap-fit ​​slots are adapted to each other. The filter box and the air intake ring are connected through the snap-fit ​​slots and the snap-fit ​​blocks, and a locking gasket is provided at the connection point. A filter cover is connected to the upper part of the filter box. One end of the filter cover is rotatably connected to the filter box, and the other end is connected to the filter box via a snap fastener.

[0009] Preferably, the bottom of the filter box is provided with a cross-shaped fixing strip and several straight fixing strips.

[0010] Preferably, a filter element is filled between the filter box and the filter cover.

[0011] Preferably, the air outlet assembly includes an air outlet located at the lower part of the half-mask body, an air outlet ring is provided on the air outlet, an air outlet cover is fitted on the outside of the air outlet ring, two connecting grooves are provided at the lower part of the air outlet cover, and two connecting blocks are correspondingly provided on the outer surface of the air outlet ring, and the connecting grooves and the connecting blocks are adapted to each other. The air outlet ring sleeve has an annular retainer inside, and an air outlet valve plate is provided on the outside of the annular retainer. A through rod is provided at the center of the air outlet valve plate, and the through rod passes through the central through hole of the annular retainer.

[0012] Preferably, the vent cover has multiple vent holes.

[0013] Preferably, the fixing component includes fixing grooves formed on both sides of the half-mask body, a horizontal through rod is provided above the fixing groove, and two connecting straps pass through the horizontal through rods on both sides respectively. One end of the two connecting straps is connected to both ends of the head frame respectively, and the other end of the two connecting straps is provided with a buckle and a retaining ring respectively.

[0014] Preferably, the connecting strap is connected to the head frame, the buckle, and the retaining ring via a sleeve plate. The sleeve plate has a rectangular opening, and a pressing plate is provided inside the rectangular opening. One end of the pressing plate is fixedly connected to the sleeve plate, and the other end is the pressing end.

[0015] Therefore, this utility model adopts the above-mentioned dustproof breathing mask. When the filter element is saturated with dust, it is only necessary to remove the old filter element and replace it with a new one to quickly restore the mask's high-efficiency filtration performance and avoid protection failure due to filter element blockage. The replaceable filter element design reduces the cost of use, eliminating the need to discard the entire breathing mask due to filter element failure and reducing resource waste. Different types of filter elements can be adapted to various dust environments, improving the protection's specificity, meeting the needs of diverse industrial scenarios, and effectively extending the mask's service life.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the dustproof breathing mask of this utility model; Figure 2 This is a bottom view of the structure of a dustproof breathing mask according to the present invention; Figure 3 This is a rear view structural diagram of a dustproof breathing mask according to the present invention; Figure 4 This is a schematic diagram of the structure of a dustproof breathing mask with a filter cover that can be removed according to the present invention; Figure 5 This is a schematic diagram of the structure of the filter removal component of a dustproof breathing mask according to the present invention; Figure 6 This is a schematic diagram of the structure of the exhaust hood of a dustproof breathing mask according to the present invention; Figure 7 This is a schematic diagram of the filter box of a dustproof breathing mask according to the present invention; Figure 8 This is a schematic diagram of the filter element of a dustproof breathing mask according to the present invention; Figure 9 This is a schematic diagram of the structure of the sleeve plate of a dustproof breathing mask according to this utility model; Reference numerals: 1. Half-mask body; 11. Flexible contact layer; 2. Air intake assembly; 21. Air intake port; 22. Air intake ring; 221. Snap-fit ​​groove; 23. Fan blade clip; 231. Limiting component; 24. Air intake valve plate; 3. Filter assembly; 31. Filter box; 311. Snap-fit ​​block; 32. Connecting hole; 33. Filter cover; 34. Snap fastener; 35. Cross-shaped fixing strip; 36. Straight fixing strip; 37. Filter element; 4. Air outlet assembly; 41. Air outlet; 42. Air outlet ring; 421. Connecting block; 43. Air outlet hood; 431. Exhaust hole; 44. Ring-shaped clamp; 45. Air outlet valve plate; 451. Through rod; 5. Fixing assembly; 51. Fixing groove; 52. Horizontal through rod; 53. Connecting strap; 54. Head frame; 55. Buckle; 56. Snap ring; 57. Sleeve plate; 571. Rectangular opening; 572. Pressure plate. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Example Please see Figure 1-9 This utility model provides a dustproof breathing mask, including a half-mask body 1. An air inlet assembly 2, a filter assembly 3, an air outlet assembly 4, and a fixing assembly 5 are disposed on the outer side of the half-mask body 1. The fixing assembly 5 is disposed at both ends of the outer side of the half-mask body 1, the air outlet assembly 4 is disposed at the lower part of the half-mask body 1, and the air inlet assembly 2 is disposed at the upper part of the half-mask body 1, and the air inlet assembly 2 and the filter assembly 3 are connected. A flexible contact layer 11 is disposed on the inner side of the half-mask body 1, which improves the user's comfort.

[0021] The air intake assembly 2 includes an air intake port 21 formed on the half-mask body 1. An air intake ring 22 is provided on the air intake port 21. An air intake valve plate 24 and a fan blade retainer 23 are disposed inside the air intake ring. A limiting member 231 is provided at the center of the fan blade retainer 23. The limiting member 231 passes through a central through-hole of the air intake valve plate 24, and a limiting piece is also provided on the inner end of the limiting member 231 to limit the air intake valve plate 24 and prevent it from disengaging. Two L-shaped snap-fit ​​grooves 221 are formed on the outer surface of the air intake ring 22.

[0022] The filter assembly 3 includes a filter box 31. A connection hole 32 is provided at the bottom of the filter box 31. Two snap-fit ​​blocks 311 are provided inside the connection hole 32. The two snap-fit ​​blocks 311 are compatible with two snap-fit ​​grooves 221. The filter box 31 and the air intake ring sleeve 22 are connected through the snap-fit ​​grooves 221 and the snap-fit ​​blocks 311, and a locking washer is provided at the connection point. When connection is required, the filter box 31 is placed on top of the half-mask body 1, the two snap-fit ​​blocks 311 are inserted into one end of the two snap-fit ​​grooves 221, and then the filter box 31 is rotated to lock the snap-fit ​​blocks 311 into the other end of the connection grooves 221.

[0023] A filter cover 33 is connected to the upper part of the filter box 31, and the filter cover 33 has a grid filter opening. One end of the filter cover 33 is rotatably connected to the filter box, and the other end is connected to the filter box 31 via a snap 34. The filter box 31 and the filter cover 33 are fastened together. When the filter element 37 needs to be replaced, simply open the filter cover 33, remove the old filter element 37, insert the new filter element 37, and close the filter cover 33. The filter element 37 is filled between the filter box 31 and the filter cover 33. The filter element 37 is used to filter the gas entering the filter box 31 and keep dust particles outside the air inlet 21. Figure 8 As shown, filter element 37 uses a pleated process to increase the filtration area within a limited space, thereby improving the filtration effect. The bottom of filter box 31 is provided with a cross-shaped fixing strip 35 and several straight fixing strips 36. The fixing strips are used to fix the filter element 37 and prevent the filter element 37 from moving during use.

[0024] The air outlet assembly 4 includes an air outlet 41 located at the lower part of the half-mask body 1. An air outlet ring 42 is provided on the air outlet 41, and an air outlet cover 43 is fitted over the air outlet ring 42. Two connecting grooves are provided at the lower part of the air outlet cover 43, and two connecting blocks 421 are correspondingly provided on the outer surface of the air outlet ring 42. The connecting grooves and connecting blocks 421 are compatible, and the air outlet cover 43 is connected to the air outlet ring 42 through the engagement of the connecting grooves and connecting blocks 421. Multiple exhaust holes 431 are provided on the air outlet cover 43 for discharging exhaled gas.

[0025] An annular retainer 44 is provided inside the venting ring sleeve 42, and an venting valve plate 45 is provided outside the annular retainer 44. A through rod 451 is provided at the center of the venting valve plate 45. The through rod passes through the central through hole 2 of the annular retainer 44. The outer diameter of the end of the through rod 451 that passes through the central through hole 2 is larger than the outer diameter of the end of the through rod that connects to the venting valve plate 45, so as to prevent the venting valve plate 45 from detaching from the annular retainer 44.

[0026] The fixing component 5 includes fixing grooves 51 on both sides of the half-mask body 1. A horizontal through rod 52 is provided above the fixing groove 51. Two connecting straps 53 pass through the horizontal through rods 52 on both sides respectively. One end of the two connecting straps 53 is connected to both ends of the head frame 54 respectively. The other end of the two connecting straps 53 is provided with a buckle 55 and a retaining ring 56 respectively. The buckle 55 and the retaining ring 56 are fastened together.

[0027] The connecting strap 53 is connected to the head frame 54, buckle 55, and retaining ring 56 via a sleeve plate 57. The sleeve plate 57 has a rectangular opening 571, within which a pressure plate 572 is installed. One end of the pressure plate 572 is fixedly connected to the sleeve plate 57, and the other end serves as the pressure end. To adjust the length of the connecting strap 53, simply lift the pressure plate 572 upwards, allowing the connecting strap 53 to pass through the rectangular opening 571. Once the desired length is achieved, lower the pressure plate 572.

[0028] In practical use, the breathing mask is placed on the user's face, the headband 54 is placed behind the user's head, and the buckle 55 and the ring 56 are fastened behind the neck. After connection, the length of the connecting strap 53 on both sides is adjusted according to the actual situation to improve the user's comfort and ensure that the breathing mask fits the user's face. When inhaling, the filtered gas from the filter element 37 enters the breathing mask through the air inlet 21. At this time, the air inlet valve 24 moves inward. When exhaling, the gas is exhaled through the air outlet 41. At this time, the air outlet valve 45 moves outward, and the gas is discharged through the exhaust hole 431 on the exhaust mask 43.

[0029] Therefore, this utility model adopts the above-mentioned dustproof breathing mask. When the filter element is saturated with dust, it is only necessary to remove the old filter element and replace it with a new one to quickly restore the mask's high-efficiency filtration performance and avoid protection failure due to filter element blockage. The replaceable filter element design reduces the cost of use, eliminating the need to discard the entire breathing mask due to filter element failure and reducing resource waste. Different types of filter elements can be adapted to various dust environments, improving the protection's specificity, meeting the needs of diverse industrial scenarios, and effectively extending the mask's service life.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A dust-proof respirator, characterized by: The device includes a half-mask body, and an air inlet assembly, a filter assembly, an air outlet assembly, and a fixing assembly are provided on the outer side of the half-mask body. The fixing assembly is located at both ends of the outer side of the half-mask body, the air outlet assembly is located at the lower part of the half-mask body, and the air inlet assembly is located at the upper part of the half-mask body. The air inlet assembly and the filter assembly are connected.

2. A dust mask according to claim 1, wherein: A flexible contact layer is provided on the inner side of the half-mask body.

3. A dust mask according to claim 2, wherein: The air intake assembly includes an air intake port formed on the half-mask body, an air intake ring sleeve is provided on the air intake port, an air intake valve plate and a fan blade retainer are provided inside the air intake ring sleeve, a limiting member is provided at the center of the fan blade retainer, and the limiting member passes through the central through hole of the air intake valve plate. Two L-shaped snap-fit ​​grooves are formed on the outer surface of the intake ring sleeve.

4. A dust mask according to claim 3, wherein: The filter assembly includes a filter box, the bottom of which has a connection hole. Two snap-fit ​​blocks are provided inside the connection hole. The two snap-fit ​​blocks and two snap-fit ​​slots are adapted to each other. The filter box and the air intake ring are connected through the snap-fit ​​slots and the snap-fit ​​blocks, and a locking gasket is provided at the connection. A filter cover is connected to the upper part of the filter box. One end of the filter cover is rotatably connected to the filter box, and the other end is connected to the filter box via a snap fastener.

5. A dust mask according to claim 4, wherein: The bottom of the filter box is provided with a cross-shaped fixing strip and several straight fixing strips.

6. A dust mask according to claim 5, wherein: A filter element is filled between the filter box and the filter cover.

7. A dust mask according to claim 6, wherein: The air outlet assembly includes an air outlet located at the lower part of the half-mask body. An air outlet ring is provided on the air outlet. An air outlet cover is fitted over the air outlet ring. Two connecting grooves are provided at the lower part of the air outlet cover. Two connecting blocks are correspondingly provided on the outer surface of the air outlet ring. The connecting grooves and the connecting blocks are adapted to each other. The air outlet ring sleeve has an annular retainer inside, and an air outlet valve plate is provided on the outside of the annular retainer. A through rod is provided at the center of the air outlet valve plate, and the through rod passes through the central through hole of the annular retainer.

8. A dust mask according to claim 7, wherein: The vent cover has multiple vent holes.

9. A dust mask according to claim 8, wherein: The fixing component includes fixing grooves formed on both sides of the half-mask body. A horizontal through rod is provided above the fixing groove. Two connecting straps pass through the horizontal through rods on both sides respectively. One end of the two connecting straps is connected to both ends of the head frame respectively. The other end of the two connecting straps is provided with a buckle and a retaining ring respectively.

10. A dust mask according to claim 9, wherein: The connecting belt is connected to the head frame, the buckle, and the retaining ring through a sleeve plate. The sleeve plate has a rectangular opening, and a pressure plate is provided inside the rectangular opening. One end of the pressure plate is fixedly connected to the sleeve plate, and the other end is the pressure end.

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