A dust mask

Abstract

The utility model discloses a dust mask, including face guard shell and transparent protection panel, the inside of face guard shell is provided with exhaust box, the top of face guard shell is provided with air inlet hose, wherein, the inside of face guard shell bottom is installed to exhaust box, a plurality of exhaust holes are seted up on exhaust box, the top of face guard shell is installed with air inlet splitter cover, one end of air inlet hose is installed to one side of air inlet splitter cover, and air inlet hose transports clean air to the inside of face guard shell through air inlet splitter cover, and the inside of face guard shell is blown into after the even dispersion of the input clean air of air inlet splitter cover, constructs the airflow channel from top to bottom, and the clean air in the face guard carries internal turbid gas, and along airflow channel downward flow, finally is discharged through exhaust hole, forms the internal airflow circulation of continuous, orderly, can effectively avoid the face guard inside because personnel breathes and produces the misting phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of face mask technology, specifically a dustproof face mask. Background Technology

[0002] In many fields such as industrial production, construction, agricultural operations, mining, and laboratory operations, there are often large amounts of air pollutants such as dust, smoke, and aerosols in the working environment. As a core personal protective equipment, the main function of dust masks is to prevent air pollutants such as dust, smoke, and aerosols from entering the human respiratory tract through physical barrier and filtration, thereby reducing the risk of occupational diseases and protecting the respiratory health of users. However, traditional face masks typically employ a filter structure design with filter cartridges located at the front or sides of the mask. This design exposes the filter components directly to the working environment, subjecting them to continuous contact with dusty air. This results in the filter cartridges needing to frequently intercept and adsorb contaminants, placing a heavy burden on filtration. Frequent contaminant adhesion not only rapidly reduces filtration efficiency but also requires users to regularly replace or clean the filter cartridges, increasing operating costs and operational complexity, and causing numerous inconveniences in actual operations. Furthermore, traditional face masks typically only cover the area below the user's eyes—the nose and mouth—resulting in a small coverage area. In working environments with high dust concentrations, dust particles easily adhere to the areas of the face not covered by the mask. These dust particles may re-enter the respiratory tract when the user adjusts the mask, wipes away sweat, or breathes, affecting the protective effect. Additionally, dust adhesion to the face can cause skin discomfort, reducing the user's wearing comfort. Therefore, this utility model provides a dustproof face mask. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a dustproof face mask, which aims to solve the above problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dustproof face mask, comprising a mask shell and a transparent protective panel. An exhaust box is provided inside the mask shell, and an air inlet hose is provided at the top of the mask shell. The exhaust box is installed on the inner bottom of the mask shell, and has several exhaust holes. An air inlet diffuser is installed at the top of the mask shell, and one end of the air inlet hose is installed on one side of the air inlet diffuser. The air inlet hose delivers clean air into the mask shell through the air inlet diffuser. The exhaust box is located directly below the air inlet diffuser, and the other end of the air inlet hose is connected to an air supply device outside the work area.

[0005] Preferably, two head straps are installed on one side of the mask housing, and the two head straps are detachably connected in the middle by Velcro.

[0006] Preferably, a silicone face shield is installed on the inner side of the mask housing, and the silicone face shield is fitted to the user's face.

[0007] Preferably, an exhaust pipe is installed at the bottom of the exhaust box, and the exhaust pipe extends out of the bottom of the mask housing.

[0008] Preferably, a filter screen is installed at the bottom opening of the exhaust pipe, and a one-way valve is installed inside the exhaust pipe.

[0009] Preferably, a connector is installed at one end of the air intake hose, the connector is detachably connected to the air delivery device, and a filter is installed on one side of the connector to filter the air entering the air intake hose.

[0010] Preferably, the side wall of the air intake hose is rotatably connected to a pipe fixing clamp, and a locking bolt is threadedly connected to one side of the pipe fixing clamp, with the end of the locking bolt contacting the other side plate of the pipe fixing clamp.

[0011] Compared with the prior art, the present invention has the following advantages: (1) This utility model expands the facial coverage area and reduces the unprotected area by combining the mask shell with a transparent protective panel. This can reduce the dust residue and deposition inside the mask, reduce the contact between the face and the dust, improve the protective effect, and alleviate the discomfort caused by dust adhesion to the skin.

[0012] (2) This utility model delivers clean air directly into the mask through an air supply device outside the work area, eliminating the need for an exposed filter box structure on the mask body. This avoids the high load loss caused by the filter box coming into contact with dusty air, reduces the frequency of replacement and cleaning, lowers the cost and complexity of use, and greatly improves the ease of use.

[0013] (3) This utility model uses an air intake hood to evenly disperse the incoming clean air and blow it into the inside of the mask shell, thus constructing an airflow channel from top to bottom. The clean air entering the mask carries the internal turbid air and flows downward along the airflow channel, and is finally discharged through the exhaust hole, forming a continuous and orderly internal airflow circulation, which can effectively prevent the mask from fogging due to the person's exhalation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 3 ; Figure 4This is the utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Mask housing; 11. Transparent protective panel; 12. Air intake manifold; 13. Silicone-coated baffle; 14. Head strap; 2. Exhaust box; 21. Exhaust port; 22. Exhaust pipe; 23. Filter screen; 3. Air intake hose; 31. Connector; 32. Filter; 4. Pipe clamp; 41. Locking bolt. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 A dustproof face mask includes a face mask housing 1 and a transparent protective panel 11. An exhaust box 2 is provided inside the face mask housing 1, and an air inlet hose 3 is provided on the top of the face mask housing 1.

[0018] The exhaust box 2 is installed on the inner bottom of the mask housing 1, and the exhaust box 2 has several exhaust holes 21.

[0019] An air intake shroud 12 is installed on the top of the mask housing 1. One end of the air intake hose 3 is installed on one side of the air intake shroud 12. The air intake hose 3 delivers clean air into the mask housing 1 through the air intake shroud 12. The exhaust box 2 is located directly below the air intake shroud 12. The other end of the air intake hose 3 is connected to the air supply device outside the work area.

[0020] Two head straps 14 are installed on one side of the mask housing 1, and the two head straps 14 are detachably connected in the middle by Velcro.

[0021] It should be noted that the air intake splitter 12 described in this embodiment blows air evenly, and the airflow is discharged from top to bottom through the exhaust port 21.

[0022] Specifically, the air supply device outside the work area serves as the air source, transmitting clean air through the air intake hose 3. One end of the air intake hose is connected to the air intake distribution hood 12 on the top of the mask housing 1. The air intake distribution hood 12 evenly disperses the incoming clean air and blows it into the interior of the mask housing 1, creating a top-to-bottom airflow channel. The exhaust box 2 on the inner side of the bottom of the mask housing 1 has several exhaust holes 21. The clean air entering the mask carries the internal stale air, flows downward along the airflow channel, and is finally discharged through the exhaust holes 21, forming a continuous and orderly internal airflow circulation, which can effectively prevent fogging inside the mask due to the user's exhalation. At the same time, two head straps 14 are equipped on one side of the mask housing 1, which are detachably connected by Velcro in the middle. The user can adjust the straps appropriately. With a fixed head size to ensure stable wear on the face, this mask features a mask shell 1 paired with a transparent protective panel 11, expanding the facial coverage area and reducing unprotected areas. Furthermore, the orderly airflow guided by the air intake hood, which discharges dust from top to bottom through the exhaust vents, reduces dust residue and deposition inside the mask, minimizing face-to-face contact with dust. This enhances protection, alleviates skin discomfort caused by dust adhesion, and optimizes wearing comfort. Clean air is directly delivered into the mask through an air supply device outside the work area, eliminating the need for exposed filter structures on the mask body. This avoids the high load and wear caused by filter contact with dusty air, reducing replacement and cleaning frequency, lowering operating costs and complexity, and significantly improving ease of use.

[0023] In one embodiment of this utility model, such as Figures 1-4 As shown, a silicone face shield 13 is installed on the inner side of the mask housing 1, and the silicone face shield 13 is attached to the user's face.

[0024] It should be noted that the silicone face shield 13 described in this embodiment increases the protection against the gap between the mask housing 1 and the user's face.

[0025] Specifically, the silicone face shield 13 further enhances the overall sealing of the mask by increasing the protective strength of the gap between the mask shell 1 and the user's face. This reduces the possibility of unfiltered dusty air entering the interior through the gap between the mask and the face, preventing dust from entering the respiratory tract through such gaps and affecting the protective effect. At the same time, the soft silicone material reduces pressure and friction on the skin when it fits the face, improving wearing comfort and alleviating the discomfort that may be caused by poor fit of traditional masks. This makes users more willing to wear them properly, thus better fulfilling the protective function.

[0026] In one embodiment of this utility model, such as Figures 1-4 As shown, an exhaust pipe 22 is installed at the bottom of the exhaust box 2, and the exhaust pipe 22 extends out of the bottom of the mask housing 1.

[0027] It should be noted that the exhaust box 2 described in this embodiment draws the airflow from several exhaust holes 21 into the exhaust pipe 22 for centralized discharge.

[0028] Specifically, the exhaust pipe 22 installed at the bottom of the exhaust box 2 extends out of the bottom of the mask housing 1, so that the airflow entering the exhaust box 2 through the exhaust hole 21 can be concentrated and discharged to the outside of the mask housing 1 through the exhaust pipe 22, thereby realizing the directional and concentrated discharge of the gas inside the mask, optimizing the exhaust path and enhancing the exhaust efficiency.

[0029] In one embodiment of this utility model, such as Figures 1-4 As shown, a filter screen 23 is installed at the bottom opening of the exhaust pipe 22, and a one-way valve is installed inside the exhaust pipe 22.

[0030] Specifically, the one-way valve inside the exhaust pipe 22 only allows gas to flow unidirectionally from inside the mask housing 1 to the outside, preventing dusty air in the working environment from flowing back into the mask through the exhaust pipe 22, ensuring that the inside of the mask always maintains a clean air environment, and further ensuring the protective effect. The filter screen 23 prevents external impurities from entering the interior.

[0031] In one embodiment of this utility model, such as Figures 1-4 As shown, a connector 31 is installed at one end of the air intake hose 3. The connector 31 is detachably connected to the air delivery device. A filter 32 is installed on one side of the connector 31. The filter 32 filters the air entering the air intake hose 3.

[0032] Specifically, the connector 31 installed at one end of the air intake hose 3 enables a detachable connection with the air delivery device, facilitating flexible connection or disconnection of the air delivery device and the air intake hose 3 according to usage requirements. At the same time, the filter 32 installed on one side of the connector 31 filters the air entering the air intake hose 3 from the air delivery device, intercepting any pollutants that may be present in the air, ensuring that the air entering the air intake hose 3 meets cleanliness standards, thereby guaranteeing the cleanliness of the air delivered to the mask housing 1 and providing users with more reliable respiratory protection.

[0033] In one embodiment of this utility model, such as Figures 1-4 As shown, a pipe fixing clamp 4 is rotatably connected to the side wall of the air intake hose 3. A locking bolt 41 is threadedly connected to one side of the pipe fixing clamp 4, and the end of the locking bolt 41 contacts the other side plate of the pipe fixing clamp 4.

[0034] Specifically, the pipe fixing clip 4, which is rotatably connected to the side wall of the air intake hose 3, can be fixed to the clothing behind the user through a clamping action, thereby fixing the position of the air intake hose 3. After the pipe fixing clip 4 clamps the clothing, the locking bolt 41 connected to its threaded side is tightened, so that the end of the locking bolt 41 is in close contact with the other side plate of the pipe fixing clip 4, and the clamping state is locked by friction, preventing the pipe fixing clip 4 from loosening and falling off. By fixing the air intake hose 3, the face mask shell 1 is prevented from being directly driven when the air intake hose 3 is pulled by external force during operation, reducing the displacement of the face mask caused by pulling or the gap between the face mask and the face, and ensuring the stability and sealing of the face mask.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] Working principle: Clean air is delivered from the air supply device outside the work area through the air inlet hose 3. After being connected by connector 31 and filtered by filter 32, the air is evenly distributed into the inside of the mask housing 1 by the air inlet distributor 12, forming an airflow from top to bottom. The inner silicone face shield 13 fits tightly against the face to enhance the seal. The airflow carries the turbid air downward into the exhaust box 2, and flows into the exhaust pipe 22 through the exhaust hole 21. The one-way flow is controlled by a one-way valve and is discharged after being filtered by the filter screen 23. The head strap 14 is fixed with Velcro to ensure stable wearing. The pipeline fixing clip 4 is fixed to the air inlet hose 3 on the clothing by locking bolt 41 to avoid pulling and affecting the seal. The whole system forms a continuous clean airflow circulation, ensuring the protective effect and wearing comfort.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dustproof face mask, comprising a mask housing (1) and a transparent protective panel (11), characterized in that, An exhaust box (2) is provided on the inner side of the mask housing (1), and an air intake hose (3) is provided on the top of the mask housing (1). The exhaust box (2) is installed on the bottom inner side of the mask housing (1), and the exhaust box (2) has a plurality of exhaust holes (21). The mask housing (1) is equipped with an air intake hood (12) on top. One end of the air intake hose (3) is installed on one side of the air intake hood (12). The air intake hose (3) delivers clean air into the mask housing (1) through the air intake hood (12). The exhaust box (2) is located directly below the air intake hood (12). The other end of the air intake hose (3) is connected to an air supply device outside the work area.

2. The dustproof face mask according to claim 1, characterized in that, Two head straps (14) are installed on one side of the mask housing (1), and the two head straps (14) are detachably connected in the middle by Velcro.

3. The dustproof face mask according to claim 1, characterized in that, A silicone face shield (13) is installed on the inside of the mask housing (1), and the silicone face shield (13) is attached to the user's face.

4. A dustproof face mask according to claim 1, characterized in that, An exhaust pipe (22) is installed at the bottom of the exhaust box (2), and the exhaust pipe (22) extends out of the bottom of the mask housing (1).

5. A dustproof face mask according to claim 4, characterized in that, A filter screen (23) is installed at the bottom opening of the exhaust pipe (22), and a one-way valve is installed inside the exhaust pipe (22).

6. A dustproof face mask according to claim 1, characterized in that, One end of the air intake hose (3) is equipped with a connector (31), which is detachably connected to the air delivery device. A filter (32) is installed on one side of the connector (31), which filters the air entering the air intake hose (3).

7. A dustproof face mask according to claim 1, characterized in that, The intake hose (3) is rotatably connected to a pipe fixing clamp (4), and a locking bolt (41) is threadedly connected to one side of the pipe fixing clamp (4). The end of the locking bolt (41) contacts the other side plate of the pipe fixing clamp (4).

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