Protective mask with pressurizing and air supplying functions, mask and pressurizing and air supplying device

Abstract

The utility model discloses a protective mask and a face mask with pressurizing and air supplying functions, the protective mask comprises a mask body and a pressurizing and air supplying device, the pressurizing and air supplying device comprises a shell, a ventilation rotating wheel and a one-way air blocking piece, the shell and the mask body are installed and fixed, and the two ends of a rotating shaft of the ventilation rotating wheel are installed on the inner side of the shell; an air inlet channel and an air outlet channel are formed in the shell and are arranged on the two sides of the rotating shaft, rotating blades of the air exchange rotating wheel pass through cavities in the air inlet channel and the air outlet channel, and an inertia rotating part is arranged on the air exchange rotating wheel; one-way air blocking pieces are arranged on the inner sides of the air inlet channel and the air outlet channel, the one-way air blocking piece of the air inlet channel conducts airflow from the outer side of the cover body to the inner side of the cover body, and the one-way air blocking piece of the air outlet channel conducts airflow from the inner side of the cover body to the outer side of the cover body. The mask and the mask have the advantages of being smooth in breathing and good in protection effect, the structural design is simple and reasonable, the passive design is adopted, the service life is long, and the mask and the mask are light and easy to wear.

Description

Technical Field

[0001] The utility model relates to a protective mask, a face mask and a pressurized air supply device with a pressurized air supply function. Background Art

[0002] Masks include medical masks and mining masks. Protective masks are usually used to prevent the spread of respiratory diseases, such as influenza, colds, etc., and also to prevent the inhalation of dust. Common medical masks include medical surgical masks and N95 masks. Medical surgical masks are mainly used to block the spread of droplets, while N95 masks can filter particles in the air and provide a higher level of protection. When choosing a mask, it is recommended to choose a suitable mask type according to specific needs and the environment, and wear, use and dispose of the mask correctly.

[0003] Mining masks usually refer to the masks used in mining operations, aiming to protect workers from harmful gases, dust and particulate matter in the mining environment. Mining masks usually need to have functions such as high temperature resistance, dust prevention, gas protection, etc. to ensure the safe operation of workers in high-risk environments. Common mining masks include dust masks, gas masks, air respirators, etc. Choosing a suitable mining mask needs to consider the special requirements in the mining environment, ensure that the mask has effective protection functions, and use and maintain the mask strictly according to the requirements.

[0004] An important use of mining masks is to prevent pneumoconiosis. Pneumoconiosis is the number one occupational disease in China, accounting for more than 80% of all occupational diseases. During the labor process, workers inhale a large amount of fine dust suspended in the air. These powders and dusts deposit in the lungs and, over time, become as hard as stones, completely losing their normal respiratory function.

[0005] Pneumoconiosis is irreversible. Once it occurs, it cannot be cured for life. In fact, at present, the working environment in mines is constantly improving, and front-line workers also wear professional masks. However, due to the working intensity of the staff during the actual work process, they must often remove the masks to change air, so they cannot effectively prevent the inhalation of dust for a long time.

[0006] Some of the existing protective masks have a air supply function. Masks with an active air supply function usually need to be equipped with a battery and a motor, which not only increases the cost of the mask but also increases the weight of the mask, adding a burden to users. Summary of the Utility Model

[0007] The technical problem to be solved by the utility model is to overcome the defects that the protective mask in the prior art has high cost, excessive weight of the mask, adding burdens to users and enterprises, and provide a protective mask, a face mask and a pressurized air supply device with a pressurized air supply function, which have smooth breathing, good protection effect, and a concise and reasonable structural design, adopt a passive design, have a long service life and are light and easy to wear.

[0008] The present utility model solves the above technical problems through the following technical solutions:

[0009] A protective mask with a pressurized air supply function, characterized in that the protective mask includes a mask body and at least one pressurized air supply device, and the pressurized air supply device includes a housing, a ventilation runner, and several one-way wind blocking members.

[0010] The housing is fixedly installed with the mask body, and both ends of the rotating shaft of the ventilation runner are installed on the inner side of the housing.

[0011] An air inlet channel and an air outlet channel are provided in the housing. The air inlet channel and the air outlet channel are arranged on both sides of the rotating shaft. The rotating blades of the ventilation runner pass through the cavities in the air inlet channel and the air outlet channel, and an inertial rotating member is provided on the ventilation runner.

[0012] One-way wind blocking members are provided on the inner sides of the air inlet channel and the air outlet channel. The one-way wind blocking member of the air inlet channel conducts the air flow from the outside of the mask body to the inside of the mask body, and the one-way wind blocking member of the air outlet channel conducts the air flow from the inside of the mask body to the outside of the mask body.

[0013] Preferably, a partition is provided between the air inlet channel and the air outlet channel. The rotating shaft passes through the partition. Each air inlet channel corresponds to one rotating blade, and each air outlet channel corresponds to one rotating blade.

[0014] Preferably, the number of both the air inlet channel and the air outlet channel is two. The air inlet channels are arranged on the lower side of the rotating shaft, and the air outlet channels are arranged on the upper side of the rotating shaft. The air inlet channels are arranged adjacent to each other, and the air outlet channels are arranged on both sides of the two air inlet channels.

[0015] A blade accommodation cavity for accommodating the rotating blades is provided above the air inlet channel, and a blade accommodation cavity for accommodating the rotating blades is provided below the air outlet channel.

[0016] Preferably, the inertial rotating member is a flywheel. A flywheel is installed at each end of the rotating shaft. Flywheel accommodation cavities for accommodating the flywheels are provided on both sides of the air outlet channel. A partition is provided between the flywheel accommodation cavity and the adjacent air outlet channel.

[0017] Preferably, the one-way wind blocking member is made of soft rubber material. The one-way wind blocking member includes at least one wind blocking piece and a wind blocking member main body. Ventilation openings are provided on the wind blocking member main body. One side of the wind blocking piece is fixed to the wind blocking member main body, and the wind blocking piece is used to bend along the air flow direction.

[0018] Preferably, 4 triangular wind blocking pieces are provided on each one-way wind blocking member. The shape formed by splicing the four wind blocking pieces matches the shape of the air inlet channel or the air outlet channel. Reinforcing ribs are provided on the wind blocking pieces, and the protruding direction of the reinforcing ribs is the same as the air flow direction.

[0019] Preferably, the housing includes a housing body and a housing cover plate. The housing cover plate is disposed on the side of the housing body close to the human face. Support ribs are provided on the air outlet of the air inlet passage and the air outlet of the air outlet passage of the housing body. Installation grooves for installing the main body of the wind blocking member are provided around the air inlet and the air outlet. The housing cover plate presses the main body of the wind blocking member into the installation groove.

[0020] Preferably, the pressurized air supply device is disposed inside the one cover body. A support net is provided between the mask filter screen of the cover body and the pressurized air supply device. Another support net is provided inside the housing cover plate; or,

[0021] The pressurized air supply device is disposed outside the one cover body. A detachable filter screen is provided on the outer surface of the pressurized air supply device. A support net is provided between the detachable filter screen and the pressurized air supply device. The inner side of the pressurized air supply device is fixedly connected to the cover body.

[0022] A knob connected to the rotating shaft is provided on the side surface of the housing.

[0023] The present invention also provides a pressurized air supply device, characterized in that the pressurized air supply device is used for the protective mask with a pressurized air supply function as described above.

[0024] The present invention also provides a protective face shield with a pressurized air supply function, characterized in that the protective face shield includes the pressurized air supply device as described above.

[0025] On the basis of conforming to the common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0026] The positive and progressive effects of the present invention are as follows:

[0027] The mask and the face shield of the present invention have the advantages of smooth breathing and good protective effect, and the structural design is concise and reasonable. It adopts a passive design, has a long service life and is light and easy to wear. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the pressurized air supply device according to Embodiment 1 of the present invention.

[0029] Figure 2 It is another schematic structural diagram of the pressurized air supply device according to Embodiment 1 of the present invention.

[0030] Figure 3 It is another schematic structural diagram of the pressurized air supply device according to Embodiment 1 of the present invention.

[0031] Figure 4 It is a schematic structural diagram of the one-way wind blocking member according to Embodiment 1 of the present invention. Detailed implementation manners

[0032] The present utility model will be further described below by way of embodiments, but the present utility model is not limited to the scope of the described embodiments accordingly. Embodiment

[0033] Refer to Figures 1 to 4 , this embodiment provides a protective mask with a supercharging air supply function.

[0034] The protective mask includes a mask body and at least one supercharging air supply device. The supercharging air supply device includes a housing 101, an air exchange runner 102 and a plurality of one-way wind blocking members 103.

[0035] The housing is fixedly installed with the mask body, and both ends of the rotating shaft 1021 of the air exchange runner 102 are installed on the inner side of the housing.

[0036] An air inlet channel 1011 and an air outlet channel 1012 are provided inside the housing.

[0037] The air inlet channel and the air outlet channel are arranged on both sides of the rotating shaft.

[0038] The rotating blades 1022 of the air exchange runner 102 pass through the cavities in the air inlet channel and the air outlet channel.

[0039] An inertial rotating member, which is a flywheel 1023 in this embodiment, is provided on the air exchange runner.

[0040] One-way wind blocking members 103 are provided on the inner sides (i.e., the ends of the channels close to the human face) of the air inlet channel 1011 and the air outlet channel 1012.

[0041] The one-way wind blocking member 103 of the air inlet channel conducts the air flow from the outside of the mask body to the inside of the mask body and blocks the air flow from the inside of the mask body to the outside of the mask body.

[0042] The one-way wind blocking member of the air outlet channel conducts the air flow from the inside of the mask body to the outside of the mask body and blocks the air flow from the outside of the mask body to the inside of the mask body.

[0043] That is to say, one-way wind blocking members of the same style can be oppositely arranged in the air inlet channel and the air outlet channel.

[0044] One-way wind blocking members are provided on both the air inlet channel and the air outlet channel. The air intake flow of the air inlet channel drives the air exchange runner to rotate in the first direction. When exhaling, the air inlet channel is closed by the one-way wind blocking member, and the exhaled air flow is discharged from the air outlet channel. The air inlet channel and the air outlet channel are located on both sides of the rotating shaft of the air exchange runner. Therefore, the exhaled air flow also drives the air exchange runner to rotate in the first direction. Together with the inertial rotating member, the air exchange runner can always be kept rotating in the first direction, thereby increasing the air flow velocity.

[0045] A partition is provided between the air inlet channel and the air outlet channel, and the rotating shaft passes through the partition. Each air inlet channel corresponds to a rotating blade, and each air outlet channel corresponds to a rotating blade.

[0046] The number of both the air inlet channels and the air outlet channels is two. The air inlet channels are provided on the lower side of the rotating shaft, and the air outlet channels are provided on the upper side of the rotating shaft. The air inlet channels are arranged adjacent to each other, and the air outlet channels are provided on both sides of the two air inlet channels.

[0047] The number of the air inlet channels and the air outlet channels is not limited in this application. Preferably, it is two, but one or more also fall within the protection scope of this application. Similarly, the number of flywheels can be one or more.

[0048] Above the air inlet channel, there is a blade accommodation cavity 1024 for accommodating the rotating blade 1022, and below the air outlet channel, there is a blade accommodation cavity for accommodating the rotating blade.

[0049] The inertial rotating member is a flywheel 1023. A flywheel 1023 is installed at each end of the rotating shaft. Flywheel accommodation cavities for accommodating the flywheels are provided on both sides of the air outlet channel, and a partition is provided between the flywheel accommodation cavity and the adjacent air outlet channel.

[0050] In this embodiment, the inertial rotating member is a flywheel, and the mass of the flywheel is used to provide a certain inertia to maintain the rotation direction of the air exchange runner.

[0051] In other embodiments, the mass of the blades can also be increased, and the blades are used as inertial rotating members to provide the inertia for maintaining the direction.

[0052] The one-way wind blocking member 103 is made of soft rubber material. The one-way wind blocking member 103 includes at least one wind blocking piece 1031 and a wind blocking member main body 1032. A ventilation opening 1033 is provided on the wind blocking member main body. One side of the wind blocking piece is fixed to the wind blocking member main body, and the wind blocking piece is used to bend along the air flow direction.

[0053] See Figure 4 is an implementation manner, different from the manner in Figures 1 to 3 in

[0054] Specifically, see Figures 1 to 3 , each one-way wind blocking member is provided with 4 triangular wind blocking pieces. The shape formed by splicing the four wind blocking pieces matches the shape of the air inlet channel or the air outlet channel. Reinforcing ribs are provided on the wind blocking pieces, and the protruding direction of the reinforcing ribs is the same as the air flow direction.

[0055] The structural principle of the wind blocking piece is composed of deformable silica gel and a structural member with support. Its shape and the specific number of pieces can be designed differently according to the actual situation.

[0056] The housing includes a housing body and a housing cover plate, and the housing cover plate is disposed on a side of the housing body close to the human face.

[0057] Support ribs are provided on the air outlet of the air inlet passage and the air outlet of the air outlet passage of the housing body, and mounting grooves for mounting the main body of the windshield are provided around the air inlet and the air outlet, and the housing cover plate presses the main body of the windshield in the mounting grooves.

[0058] The pressurized air supply device is disposed inside the one housing, and a support net 105 is provided between the mask filter screen 104 of the housing and the pressurized air supply device, and another support net is provided inside the housing cover plate.

[0059] Among them, the mask filter screen 104 is a mask base material, and various mask materials can be selected to achieve different functions.

[0060] In other embodiments, the pressurized air supply device is disposed outside the one housing, a detachable filter screen is provided on the outer surface of the pressurized air supply device, a support net is provided between the detachable filter screen and the pressurized air supply device, and the inner side of the pressurized air supply device is fixedly connected to the housing.

[0061] A knob connected to a rotating shaft is provided on a side surface of the housing.

[0062] The orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0063] In the description and claims of this application, the terms "comprising" and "having" and any variations thereof mean covering non-exclusive inclusion. For example, a process, method, product or device including a series of method steps or modules does not necessarily have to be limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or devices. Embodiment

[0064] This embodiment is basically the same as Embodiment 1, and the difference is only that:

[0065] This embodiment provides a protective face mask with a pressurized air supply function, and the protective face mask includes the pressurized air supply device as described in Embodiment 1.

[0066] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that these are only examples. The protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these embodiments, but such changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A protective mask with a function of pressurized air supply, characterized in that, The protective mask includes a mask body and at least one pressurized air supply device. The pressurized air supply device includes a housing, a ventilation wheel, and a number of one-way wind deflectors. The housing is fixedly installed with the mask body, and both ends of the rotating shaft of the ventilation wheel are installed on the inner side of the housing. An air inlet channel and an air outlet channel are provided inside the housing. The air inlet channel and the air outlet channel are arranged on both sides of the rotating shaft. The rotating blades of the ventilation wheel pass through the cavities in the air inlet channel and the air outlet channel, and an inertial rotating member is provided on the ventilation wheel. One-way wind deflectors are provided on the inner sides of both the air inlet channel and the air outlet channel. The one-way wind deflector in the air inlet channel conducts the air flow from the outside of the mask body to the inside of the mask body, and the one-way wind deflector in the air outlet channel conducts the air flow from the inside of the mask body to the outside of the mask body.

2. The protective mask with a pressurized air supply function according to claim 1, characterized in that, A partition is provided between the air inlet channel and the air outlet channel. The rotating shaft passes through the partition. Each air inlet channel corresponds to one rotating blade, and each air outlet channel corresponds to one rotating blade.

3. The protective mask with a pressurized air supply function according to claim 2, wherein The air inlet channel is arranged on the lower side of the rotating shaft, and the air outlet channel is arranged on the upper side of the rotating shaft. A blade receiving cavity for receiving the rotating blades is provided above the air inlet channel, and a blade receiving cavity for receiving the rotating blades is provided below the air outlet channel.

4. The protective mask with a pressurized air supply function according to claim 3, characterized in that, The inertial rotating member is a flywheel. A flywheel is installed at each end of the rotating shaft. Flywheel receiving cavities for receiving the flywheels are provided on both sides of the air outlet channel. A partition is provided between the flywheel receiving cavity and the adjacent air outlet channel.

5. The protective mask with a pressurized air supply function according to claim 1, wherein, The one-way wind deflector is made of soft rubber material. The one-way wind deflector includes at least one wind deflector blade and a wind deflector body. Ventilation openings are provided on the wind deflector body. One side of the wind deflector blade is fixed to the wind deflector body, and the wind deflector blade is used to bend along the air flow direction.

6. The protective mask with a pressurized air supply function according to claim 5, characterized in that, Each one-way wind deflector is provided with 4 triangular wind deflector blades. The shape formed by splicing the four wind deflector blades matches the shape of the air inlet channel or the air outlet channel. Reinforcing ribs are provided on the wind deflector blades, and the protruding direction of the reinforcing ribs is the same as the air flow direction.

7. The protective mask with a pressurized air supply function according to claim 5, wherein, The housing includes a housing main body and a housing cover plate. The housing cover plate is arranged on the side of the housing main body close to the human face. Support ribs are provided at the air outlet of the air inlet channel and the air outlet of the air outlet channel of the housing main body. Installation grooves for installing the wind deflector body are provided around the air inlet and the air outlet. The housing cover plate presses the wind deflector body into the installation groove.

8. The protective mask with a pressurized air supply function according to claim 7, characterized in that, The pressurized air supply device is arranged inside the mask body. A support net is provided between the mask filter of the mask body and the pressurized air supply device, and another support net is provided on the inner side of the housing cover plate; or, The pressurized air supply device is arranged outside the mask body. A detachable filter is provided on the outer surface of the pressurized air supply device. A support net is provided between the detachable filter and the pressurized air supply device. The inner side of the pressurized air supply device is fixedly connected to the mask body; or, A knob connected to the rotating shaft is provided on the side of the housing.

9. A pressurized air supply device, characterized in that, The pressurized air supply device is used for the protective mask with a pressurized air supply function as described in any one of claims 1 to 8.

10. A protective face mask with a function of pressurized air supply, characterized in that, The protective face mask includes the pressurized air supply device as described in claim 9.

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