Industrial dust mask with air supply and pressure increase

Abstract

This invention discloses an industrial dust mask with air supply and pressurization capabilities, comprising: a mask body, a plastic shell at the front end of the mask body, a tie-up body connected to the inner end of a limiting strip, a nose pad installed on the upper inner end of the mask body, a limiting plate installed in the middle of the plastic shell, a second filter cotton installed on the rear inner end of the limiting plate, a connecting ring located at the outer end of the mask body, a protective plate installed at the inner end of a protective cover, and a wear-resistant strip installed on the outer end of the protective plate, a support frame installed on the inner end of the connecting ring, a guide rod connected to the front end of a drive motor, a protective net, and a connecting assembly including a positioning block, a positioning plate, and positioning feet. This industrial dust mask with air supply and pressurization capabilities facilitates adjustable tie-up size and adjustable air vents, while also providing air supply and pressurization functionality.

Description

Technical Field

[0001] This invention relates to the field of industrial dust mask technology, specifically to an industrial dust mask with air supply and pressurization capabilities. Background Technology

[0002] Working in dusty environments for extended periods can easily lead to respiratory and lung infections, potentially causing serious respiratory illnesses. In dusty environments, it's essential to wear industrial dust masks. These masks primarily block dust particles from entering the nasal cavity. However, prolonged use can cause breathing difficulties, significantly harming the wearer's health. Adding a pressurized air supply device to the basic industrial dust mask helps with air exchange between the inside and outside of the mask, reducing discomfort from prolonged wear. Therefore, designing an industrial dust mask with pressurized air supply is crucial. For example:

[0003] A dust mask, authorized by Chinese Patent Publication No. CN102258833B, includes a face cup and a ring-shaped face shield. One end of the face cup and one end of the ring-shaped face shield are joined together. The other end of the face cup is equipped with an air filtering device. The other end of the ring-shaped face shield is designed to fit snugly against the user's mouth and nose. From top to bottom, the other end of the ring-shaped face shield includes a nose fitting portion, a cheekbone-maxillary bone fitting portion, a maxillary bone fitting portion, a corner of the mouth fitting portion, and a mandibular bone fitting portion. This invention provides a comfortable, effective, and reusable dust mask, solving the problems of poor comfort and non-reusability of existing dust masks with good filtration effects.

[0004] A dust mask, authorized by Chinese Patent Publication No. CN102987603B, comprises: a mask body surrounding the nose and mouth; an annular contact surface joined to the periphery of the body; and a shaping frame detachably formed on the inner surface of the body. Specifically, the shaping frame, acting as a waterproof membrane with intake and exhaust holes, contacts the joint between the body and the contact surface, and forms a non-contact passage from the outer periphery to the intake holes via a plurality of radially formed protruding guides. The dust mask according to this invention prevents damage to the filtration function of the mask body due to contact with the skin, thus significantly improving dust-proof efficiency compared to the prior art.

[0005] A sponge-plastic dust mask, authorized by Chinese Patent Publication No. CN107343676A, includes a face mask body, a dust filter box, an inhalation valve, an exhalation valve, and a fixing strap. The face mask body is composed of a plastic cover and a face mask sealing ring. The plastic cover is equipped with an inhalation valve and an exhalation valve. The face mask sealing ring is located on the inner perimeter of the plastic cover and is composed of a cotton fiber layer, a plastic film layer, and a sponge layer. This invention effectively improves the comfort of wearing a dust mask and enhances its sealing performance.

[0006] However, the above-mentioned existing technical solutions have the following drawbacks: they are not convenient to realize the functions of adjustable strap size and adjustable air vent of industrial dust masks, are not convenient to adapt to people with different head circumferences, and are difficult to manually control the amount of air intake. At the same time, they are not convenient to realize the function of air supply and pressurization of industrial dust masks. Therefore, the present invention provides an industrial dust mask with air supply and pressurization to solve the above-mentioned problems. Summary of the Invention

[0007] The purpose of this invention is to provide an industrial dust mask with air supply and pressurization capabilities, in order to solve the problems mentioned in the background art, which make it inconvenient to realize the functions of adjustable strap size and adjustable air vents in industrial dust masks, and at the same time, it is inconvenient to realize the functions of air supply and pressurization in industrial dust masks.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an industrial dust mask with air supply and pressurization capabilities, comprising:

[0009] The mask body has a plastic shell at the front end, and a limiting strip is installed at the front end of the plastic shell. The inner end of the limiting strip is connected to a cable tie body, and the lower end of the cable tie body is provided with a connector. The upper inner end of the mask body is provided with a nose pad, and the inner side of the mask body is provided with a cushioning pad.

[0010] A connecting buckle is installed on the upper end of the cable tie body, and an adjustment belt is connected to the upper end of the connecting buckle. A limiting plate is installed in the middle of the plastic shell, and a connecting bolt is installed at the rear end of the limiting plate. A second filter cotton is provided at the inner rear end of the limiting plate, and a support rod is connected to the inner front end of the limiting plate. A blade is provided at the front end of the support rod.

[0011] A connecting ring is provided at the outer end of the mask body, and a protective cover is provided at the outer end of the connecting ring. A protective plate is provided at the inner end of the protective cover, and a wear-resistant strip is installed at the outer end of the protective plate. A support frame is installed at the inner end of the connecting ring, and a drive motor is provided inside the support frame. A guide rod is connected to the front end of the drive motor, and a fan blade is installed at the front end of the guide rod.

[0012] A protective net is provided inside the connecting ring, and a connecting assembly is connected to the front end of the connecting ring. The connecting assembly includes a positioning block, a positioning plate, and a positioning foot. A first filter cotton is provided on the front side of the connecting assembly, and a filter screen is installed at the front end of the first filter cotton.

[0013] Preferably, the limiting strip is engaged with the cable tie body, and the cable tie body and the connecting buckle are set in a one-to-one correspondence.

[0014] Preferably, the support rod is rotatably connected to the blades, and the blades are arranged at equal intervals on the support rod.

[0015] Preferably, the connecting ring is threadedly connected to the protective cover, and the connecting ring is symmetrically arranged about the vertical central axis of the mask body.

[0016] Preferably, the protective plate and the protective cover are arranged in a one-to-one correspondence, and the wear-resistant strips are arranged at equal angles about the center of the protective cover.

[0017] Preferably, a positioning block is installed at the front end of the connecting ring, and a positioning plate is provided at the front end of the positioning block, and a positioning foot is installed at the outer end of the positioning plate.

[0018] Preferably, the positioning blocks are arranged symmetrically about the horizontal central axis of the connecting ring, and the positioning blocks are engaged with the positioning plate.

[0019] Preferably, the positioning feet are arranged symmetrically about the horizontal central axis of the positioning plate, and the positioning feet are slidably connected to the connecting ring.

[0020] Preferably, the limiting plate and the drive motor are threadedly connected, and the connecting bolts are set at equal angles about the center of the limiting plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the industrial dust mask with air supply and pressurization facilitates the adjustment of the strap size and the air outlet of the industrial dust mask, and at the same time, facilitates the air supply and pressurization function of the industrial dust mask.

[0022] 1. It is equipped with a connector, a cable tie body and a connecting buckle. The cable tie body and the connecting buckle are connected by a limiting strip and are respectively engaged. The cable tie body and the connecting buckle are set one-to-one. The adjustment strap is wrapped around the back of the wearer's head. The length of the cable tie is adjusted by adjusting the distance between the holes on the adjacent adjustment straps. This makes it easy to realize the function of adjustable cable tie size of industrial dust mask so that the new industrial dust mask can be used by people with different head circumferences.

[0023] 2. It is equipped with a support rod, blades and connecting bolts. The support rod and blades are connected by relative rotation. The blades are evenly spaced on the support rod. The limiting plate and the drive motor are connected by relative threads. The connecting bolts are set at equal angles about the center of the limiting plate. Moving the blades changes the inclination of the blades and causes the blades to rotate with the support rod, which facilitates the function of adjustable air outlet and manual control of the air intake volume.

[0024] 3. It is equipped with a connecting ring, a connecting assembly, and a filter screen. The connecting ring is threadedly connected to the protective cover. The connecting ring is symmetrically arranged about the vertical central axis of the mask body. The protective plates are arranged one-to-one with the protective cover. The wear-resistant strips are arranged at equal angles about the center of the protective cover. The positioning blocks are symmetrically arranged about the horizontal central axis of the connecting ring. The positioning blocks are engaged with the positioning plates. The positioning feet are symmetrically arranged about the horizontal central axis of the positioning plates. The positioning feet are slidably connected to the connecting ring, which facilitates the air supply and pressurization functions of the industrial dust mask. Attached Figure Description

[0025] Figure 1 This is a frontal cross-sectional view of the present invention.

[0026] Figure 2 This is a side cross-sectional view of the connection assembly and the connecting ring of the present invention.

[0027] Figure 3 This is a schematic diagram of the rear view of the connection between the nose pad and the mask body of the present invention;

[0028] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0029] Figure 5 This is a front view schematic diagram of the connection between the positioning block and the connecting ring of the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B.

[0031] In the diagram: 1. Mask body; 2. Plastic shell; 3. Limiting strip; 4. Cable tie body; 5. Connector; 6. Connecting buckle; 7. Adjusting strap; 8. Support rod; 9. Blade; 10. Connecting ring; 11. Protective cover; 12. Protective plate; 13. Wear-resistant strip; 14. Support frame; 15. Drive motor; 16. Guide rod; 17. Fan blade; 18. Protective net; 19. Connecting assembly; 1901. Positioning block; 1902. Positioning plate; 1903. Positioning foot; 20. First filter cotton; 21. Filter screen; 22. Nose pad; 23. Buffer pad; 24. Limiting plate; 25. Connecting bolt; 26. Second filter cotton. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-6 This invention provides a technical solution: an industrial dust mask with air supply and pressurization capabilities, comprising: a mask body 1, a plastic shell 2 at the front end of the mask body 1, a limiting strip 3 installed at the front end of the plastic shell 2, a cable tie body 4 connected to the inner end of the limiting strip 3, a connector 5 at the lower end of the cable tie body 4, a nose pad 22 installed on the upper inner end of the mask body 1, and a cushioning pad 23 on the inner side of the mask body 1; a connecting buckle 6 installed on the upper end of the cable tie body 4, an adjusting strap 7 connected to the upper end of the connecting buckle 6, a limiting plate 24 installed in the middle of the plastic shell 2, a connecting bolt 25 installed at the rear end of the limiting plate 24, a second filter cotton 26 installed on the rear inner end of the limiting plate 24, a support rod 8 connected to the front inner end of the limiting plate 24, and a blade 9 at the front end of the support rod 8; and a connecting ring 10. It is set at the outer end of the mask body 1, and the outer end of the connecting ring 10 is provided with a protective cover 11. The inner end of the protective cover 11 is provided with a protective plate 12, and the outer end of the protective plate 12 is installed with a wear-resistant strip 13. The inner end of the connecting ring 10 is installed with a support frame 14, and the support frame 14 is provided with a drive motor 15. The front end of the drive motor 15 is connected to a guide rod 16, and the front end of the guide rod 16 is installed with a fan blade 17. A protective net 18 is set on the inner side of the connecting ring 10, and the front end of the connecting ring 10 is connected to a connecting assembly 19. The connecting assembly 19 includes a positioning block 1901, a positioning plate 1902 and a positioning foot 1903. The front side of the connecting assembly 19 is provided with a first filter cotton 20, and the front end of the first filter cotton 20 is installed with a filter screen 21. The combination constitutes an industrial dust mask with air supply and pressurization.

[0034] like Figure 1 , Figure 3 and Figure 5As shown, the limiting strip 3 is engaged with the cable tie body 4, and the cable tie body 4 and the connecting buckle 6 are set one-to-one. The support rod 8 and the blade 9 are rotatably connected, and the blade 9 is set at equal intervals on the support rod 8. The limiting plate 24 and the drive motor 15 are threadedly connected, and the connecting bolt 25 is set at an equal angle about the center of the limiting plate 24. The connecting head 5 at the lower end of the cable tie body 4 is worn to the back of the neck. The nose pad 22 at the inner end of the mask body 1 fits against the wearer's nose bridge, and the cushioning pad 23 contacts the cheek. The adjustment strap 7 is wrapped around the back of the wearer's head. By adjusting the distance between the holes on the adjacent adjustment straps 7, the length of the cable tie is adjusted so that the new industrial dust mask can be used by people with different head circumferences. At the same time, the blade 9 is turned so that the inclination of the blade 9 is changed, and the blade 9 rotates with the support rod 8, thus completing the manual control and adjustment of the size of the air inlet. After the wearer puts on the mask, outside air is inhaled through the second filter cotton 26 at the inner end of the limiting plate 24. The second filter cotton 26 effectively blocks dust in the environment, filtering the air entering the wearer's nasal cavity. The air exhaled by the wearer through spontaneous breathing is discharged to the front end of the fan blade 17 due to the pressure difference before and after the fan blade 17. At this time, the exhaled air is filtered by the first filter cotton 20 and discharged to the outside through the filter screen 21 and the protective plate 12. At the same time, the first filter cotton 20 filters the dust in the environment, and the filter screen 21 blocks the dust in the environment, preventing some dust from entering the mask through the gap between the fan blade 17 and the connecting ring 10 during the air supply and ventilation process. This facilitates the adjustment of the strap size and the air vent of the industrial dust mask, so as to adapt to wearers with different head circumferences and allow manual control of the air intake.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, the connecting ring 10 is threadedly connected to the protective cover 11, and the connecting ring 10 is symmetrically arranged about the vertical central axis of the mask body 1. The protective plate 12 is arranged one-to-one with the protective cover 11, and the wear-resistant strip 13 is arranged at an equal angle about the center of the protective cover 11. The positioning block 1901 is symmetrically arranged about the horizontal central axis of the connecting ring 10, and the positioning block 1901 is engaged with the positioning plate 1902. The positioning foot 1903 is symmetrically arranged about the horizontal central axis of the positioning plate 1902, and the positioning foot 1903 is slidably connected to the connecting ring 10. The first filter cotton 20 is placed at the rear end of the filter screen 21, and the front end of the first filter cotton 20 contacts the rear end of the filter screen 21. The positioning plate 1902 is aligned with the rear side of the protective cover 11, so that the positioning foot 1903 at the lower end of the positioning plate 1902 slides on the protective cover 11. It stops when the front end of the positioning plate 1902 contacts the rear end of the first filter cotton 20. Figure 5 and Figure 6As shown, by holding the wear-resistant strip 13 at the outer end of the protective cover 11, the protective cover 11 is threadedly connected to the connecting ring 10 at the outer end of the mask body 1, so that the positioning block 1901 on the front side of the connecting ring 10 can engage with the rear end of the positioning plate 1902, completing the installation of the filter module of the industrial mask. When the internal drive motor 15 of the support frame 14 is opened, the drive motor 15 drives the guide rod 16 to rotate. The front end of the guide rod 16 is equipped with a fan blade 17, which makes the fan blade 17 move in a circular motion inside the connecting ring 10. When the industrial dust mask is worn, the movement of the fan blade 17 makes... When the internal pressure of the connecting ring 10 changes, the air in front of the fan blade 17 is pushed forward due to the interaction between the objects. The air velocity is greater than that behind the fan blade 17. According to the law of gas velocity and pressure, the pressure is lower where the velocity is higher. Therefore, the pressure behind the fan blade 17 is greater than that in front of the fan blade 17. Under the pressure of atmospheric pressure and the push of the fan blade 17, an airflow is formed, which completes the air supply and pressurization treatment inside the industrial dust mask. This facilitates the air supply and pressurization function of the industrial dust mask. This is the usage method of the industrial dust mask with air supply and pressurization.

[0036] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An industrial dust mask with air supply and pressure increase, characterized in that, Include: The front end of the mask body (1) is provided with a plastic shell (2), and the front end of the plastic shell (2) is provided with a limiting strip (3), the inner end of the limiting strip (3) is connected with a ribbon body (4), and the lower end of the ribbon body (4) is provided with a connecting head (5), the upper side of the mask body (1) is provided with a nose pad (22), and the inner side of the mask body (1) is provided with a buffer pad (23); The connecting buckle (6) is installed at the upper end of the ribbon body (4), and the upper end of the connecting buckle (6) is connected with an adjusting belt (7), the middle part of the plastic shell (2) is provided with a limiting plate (24), and the rear end of the limiting plate (24) is provided with a connecting bolt (25), the rear side of the limiting plate (24) is provided with a second filter cotton (26), and the front side of the limiting plate (24) is connected with a supporting rod (8), and the front end of the supporting rod (8) is provided with a blade (9); The connecting ring (10) is provided at the outer end of the mask body (1), and the outer end of the connecting ring (10) is provided with a protective cover (11), the inner end of the protective cover (11) is provided with a protective plate (12), and the outer end of the protective plate (12) is provided with a wear-resistant strip (13), the inner end of the connecting ring (10) is provided with a supporting frame (14), and the inner end of the supporting frame (14) is provided with a driving motor (15), the front end of the driving motor (15) is connected with a guide rod (16), and the front end of the guide rod (16) is provided with a fan blade (17); The protective net (18) is provided at the inner side of the connecting ring (10), and the front end of the connecting ring (10) is connected with a connecting assembly (19), the connecting assembly (19) comprises a positioning block (1901), a positioning plate (1902) and a positioning foot (1903), and the front side of the connecting assembly (19) is provided with a first filter cotton (20), and the front end of the first filter cotton (20) is provided with a filter screen (21).

2. The industrial dust mask with air supply and pressure boosting function according to claim 1, characterized in that: The limiting strip (3) is connected with the ribbon body (4), and the ribbon body (4) is provided with the connecting buckle (6) one by one.

3. The industrial dust mask with air supply and pressure boosting function according to claim 1, characterized in that: The supporting rod (8) is connected with the blade (9), and the blades (9) are arranged at equal intervals on the supporting rod (8).

4. The industrial dust mask with air supply and pressure boosting function according to claim 1, characterized in that: The connecting ring (10) is connected with the protective cover (11), and the connecting ring (10) is symmetrically arranged about the vertical central axis of the mask body (1).

5. The industrial dust mask with air supply and pressure boosting function according to claim 1, characterized in that: The protective plate (12) is provided with the wear-resistant strip (13) one by one, and the wear-resistant strip (13) is arranged at equal angles about the center of the protective cover (11).

6. The industrial dust mask with air supply and pressure boosting function according to claim 1, characterized in that: The front end of the connecting ring (10) is provided with a positioning block (1901), and the front end of the positioning block (1901) is provided with a positioning plate (1902), and the outer end of the positioning plate (1902) is provided with a positioning foot (1903).

7. The industrial dust mask with air supply and pressure boosting function according to claim 6, characterized in that: The positioning block (1901) is symmetrically arranged about the horizontal central axis of the connecting ring (10), and the positioning block (1901) is connected with the positioning plate (1902).

8. The industrial dust mask with air supply and pressure boosting function according to claim 6, characterized in that: The positioning feet (1903) are symmetrically arranged up and down about the horizontal central axis of the positioning plate (1902), and the positioning feet (1903) are slidably connected to the connecting ring (10).

9. The industrial dust mask with air supply and pressure boosting function according to claim 1, characterized in that: The limiting plate (24) is threadedly connected to the driving motor (15), and the connecting bolts (25) are symmetrically arranged at equal angles about the center of the limiting plate (24).

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