Dustproof mask for communication in underground coal mine group

Abstract

The dustproof mask comprises a body frame, the body frame is of an arc-shaped protruding structure which is made of plastic materials and surrounds the mouth and the nose, a supporting frame is arranged in the center of the body frame in a hollowed-out mode, a filtering cotton piece is connected to the supporting frame in a clamped mode, a filtering shell is movably connected to the supporting frame, and the filtering shell is located on the outer side of the filtering cotton piece. A face rubber sheet is arranged on the body frame, the face rubber sheet is in a rounded equilateral triangle shape and is tightly attached to the nose wing, the body frame is combined with the face rubber sheet, connecting pieces are arranged on the two sides of the face rubber sheet, and communication equipment is arranged on the connecting pieces. The anti-dust mask is simple and compact in structure, light and practical, solves the problems that an existing anti-dust mask is single in function, poor in filtering effect and low in practicability in the coal mine underground working environment, and meets the actual working requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust masks for coal mines, and relates to a dust mask used for intra-group communication in underground coal mines. Background Art

[0002] Dust masks are used to protect the oral cavity and respiratory tract of workers in coal mines. They are commonly found in various types of underground coal mine work. Most of the existing mining dust masks are self-priming dust masks. After wearing for a long time, a large amount of dust will adhere to the mask, causing increased breathing resistance, poor filtering effect, easy damage to the filter net, short service life, and high cost of use. If medical dust masks with higher filtration efficiency are used directly, the breathing resistance is large, and wearing for a long time will obviously feel suffocated. For people engaged in front-line physical labor in coal mines, they usually give up wearing them because of the large breathing resistance and the impact on their work, and their practicality is low.

[0003] The machinery and equipment used underground are noisy, and wearing a mining dust mask makes sound difficult to transmit. Removing the mask and speaking for extended periods without a dust mask not only reduces communication efficiency but also increases the risk of inhaling coal dust, seriously endangering the health of frontline coal miners and impacting safe and efficient production. Using Bluetooth headsets for communication can easily cause the earphones to rip and fall, making them less practical. Existing mining dust masks are limited in functionality and fail to meet the practical needs of underground workers. Utility Model Content

[0004] The purpose of the utility model is to provide a dust mask for intra-group communication in coal mines, so as to solve the problems of existing dust masks having single function, poor filtering effect and low practicality in the working environment of coal mines.

[0005] The technical solution adopted by the utility model is a dust mask used for communication within a group underground in a coal mine, comprising a main body frame, the main body frame being an arc-shaped raised structure made of plastic material surrounding the mouth and nose, a support frame being hollowed out in the center of the main body frame, a filter cotton sheet being clamped on the support frame, a filter shell being movably connected on the support frame, the filter shell being located on the outside of the filter cotton sheet, a facial rubber skin being arranged on the main body frame, the facial rubber skin being in the form of an equilateral triangle with rounded corners, the facial rubber skin being closely attached to the nose wings, the main body frame and the facial rubber skin being combined, connectors being arranged on both sides of the facial rubber skin, and communication equipment being arranged on the connectors.

[0006] The technical solution adopted by the present utility model is also characterized in that:

[0007] The communication device includes a microphone part and an earphone part. The earphone part adopts a bone conduction earphone. The bone conduction earphone includes a flexible earphone rod. The flexible earphone rod surrounds the neck. Earphone receivers are arranged at both ends of the flexible earphone rod. The microphone part adopts a miniature microphone. The earphone receiver is electrically connected to the miniature microphone.

[0008] The connecting parts include a bone conduction headband, which is connected to the flexible headphone rod. The two ends of the bone conduction headband are connected to ear straps. The upper part of the facial rubber skin is punched with holes, and the ear strap holes extend to the outside of the face. Ear strap buckles are set at the protruding ends of the ear straps, and the ear straps are made of elastic bands.

[0009] A nasal inhalation valve is provided on one side of the upper part of the support frame, and an oral exhalation valve is provided on the other side of the lower part of the main body frame. The oral exhalation valve adopts a one-way air outlet valve, and exhalation is performed through the oral exhalation valve. A miniature microphone is fixedly provided above the oral exhalation valve.

[0010] The middle part of the filter housing is a filter mesh, and a plurality of buckles are provided on the lower edge of the filter housing, which are movably connected to the support frame through the buckles.

[0011] The filter cotton sheet uses a nano filter mesh with flame retardant and anti-static properties as the filter material.

[0012] The main frame is covered with velvet on the side close to the face and nose.

[0013] The beneficial effects of the present invention are as follows: the dust mask used for intra-group communication in coal mines utilizes a filter mesh and a filter cotton sheet in combination to filter layer by layer, reducing the size of dust particles and preventing dust from entering the mouth and nasal cavity of workers, thereby significantly improving filtering and dustproofing performance. The communication device includes a microphone and an earphone unit, which is connected to the bone conduction earphones via a bone conduction headband. The microphone unit is fixed to the lower portion of the mask frame surrounding the mouth and nose, above the exhalation valve. The earband buckle and earband are used to adjust the size, thereby improving the practicality and functionality of the dust mask, while being low in cost and having good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a dust mask used for intra-group communication in underground coal mines according to the utility model;

[0015] Figure 2 The utility model is a side view of a dust mask used for intra-group communication in underground coal mines.

[0016] In the figure, 1. filter housing, 11. buckle, 12. mesh, 2. filter cotton sheet, 3. support frame, 4. main frame, 41. nasal inhalation valve, 42. oral exhalation valve, 5. facial rubber, 61. microphone part, 62. earphone part, 621. earband buckle, 622. earband, 623. bone conduction headband, 624. flexible earphone rod, 625. earphone receiver. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Example 1

[0019] The utility model is a structure of a dust mask for communication within a coal mine. Figure 1 、 Figure 2 As shown, it includes a main body frame 4, which is an arc-shaped raised structure made of plastic material around the mouth and nose. The center of the main body frame 4 is hollowed out to set a support frame 3, and the filter cotton sheet 2 is clamped on the support frame 3. The filter shell 1 is movably connected to the support frame 3. The filter shell 1 is located on the outside of the filter cotton sheet 2 to improve the filtering effect. A facial rubber skin 5 is set on the main body frame 4. The facial rubber skin 5 is an equilateral triangle with rounded corners. The facial rubber skin 5 is close to the nose wing. The main body frame 4 and the facial rubber skin 5 are combined to improve the tightness of the dust mask to the face; connectors are set on both sides of the facial rubber skin 5, and communication equipment is set on the connector. The communication equipment enables the staff to communicate information while wearing the dust mask.

[0020] Example 2

[0021] Based on Example 1, the communication device includes a microphone part 61 and an earphone part 62. The earphone part 62 is a bone conduction earphone. The bone conduction earphone includes a flexible earphone rod 624. The flexible earphone rod 624 surrounds the neck. Earphone receivers 625 are set at both ends of the flexible earphone rod 624. The microphone part 61 is a miniature microphone, and the earphone receiver 625 is electrically connected to the miniature microphone.

[0022] Example 3

[0023] On the basis of Example 2, the connecting part includes a bone conduction headband 623, which is connected to a flexible earphone rod 624. Both ends of the bone conduction headband 623 are connected to ear straps 622. The upper part of the facial rubber skin 5 is perforated, and the ear straps 622 extend outward from the face through the holes. An ear strap buckle 621 is provided at the protruding end of the ear strap 622. The ear strap buckle 621 is used to adjust the length of the ear strap 622. The ear strap 622 is made of elastic band, and the ear strap 622 is easy to replace after being disconnected.

[0024] Example 4

[0025] On the basis of Example 3, a nasal inhalation valve 41 is provided on one side of the upper part of the support frame 3, so that the inhaled air can be filtered layer by layer. An oral exhalation valve 42 is provided on the other side of the lower part of the main body frame 4. The oral exhalation valve 42 adopts a one-way air outlet valve, which is directly connected to the outside world. Exhalation is performed through the oral exhalation valve 42, and a miniature microphone is fixedly arranged above the oral exhalation valve 42, which further improves the dust-proof effect.

[0026] The middle part of the filter housing 1 is a filter mesh 12, and a number of buckles 11 are set on the lower edge of the filter housing 1, which are movably connected to the support frame 3 through the buckles 11. The filter housing 1 is switched on and off with the support frame 3 through the buckles 11, and the switch filter housing 1 replaces the filter cotton sheet 2. The filter mesh 12 and the buckle 11 are both made of lightweight plastic material. The filter mesh 12 and the filter cotton sheet 2 are used together to perform layer-by-layer filtering, which reduces the dust particle size and prevents dust from entering the oral and nasal cavities of the staff, greatly improving the dustproof performance of the dust cover.

[0027] The filter cotton sheet 2 uses a nanometer filter mesh with flame retardant and antistatic properties as the filter material.

[0028] The main frame 4 is paved with velvet on the side of the face and nose to avoid pressure on different face shapes and to adapt to the dense and easy contact of different nose bridges and cheeks. A loose arc-shaped convex space is reserved inside the main frame 4 for the mouth and nose to expand the ventilation area of the mask, and to soundproof and reduce noise, making it convenient for the micro-microphone to pick up sound.

[0029] The working principle of the dust mask of the utility model used for communication within the coal mine underground group is that the filter cotton sheet 2 can be conveniently assembled on the main body frame 4 through the filter shell 1 and the support frame 3. After the filter cotton sheet 2 has been used for a period of time, the filter cotton sheet 2 can be removed through the buckle 11 and replaced, and can be used repeatedly; the nasal inhalation valve 41 is used in conjunction with the filter mesh 12 and the filter cotton sheet 2 to perform layer-by-layer filtration, and the filtering effect is good.

[0030] The working process of the dust mask of the utility model for communication within a group in a coal mine is as follows: when inhaling, the user replaces the filter cotton sheet 2 with a new one through the switch buckle 11, presses the facial rubber skin 5 tightly against the face, and wears the earphone receiver 625 into the ear. The air with a large amount of coal dust in the coal mine passes through the filter housing 1 and the filter cotton sheet 2, and the coal dust in the air is greatly reduced. Then, clean air is inhaled through the nasal inhalation valve 41; when exhaling, the exhaled dirty air is discharged through the oral exhalation valve 42; when communication is needed in the coal mine, without taking off the dust mask, each member of the group outputs information through the microphone part 61, and each member of the group obtains information through the earphone part 62, thereby conducting communication without noise and coal dust.

[0031] The utility model discloses a dust-proof mask for intra-group communication in coal mines, which adds the listening and speaking functions of the communication equipment, so that coal miners in the underground working environment can communicate within the group without taking off the mask; the filter cotton sheet 2 is easy to disassemble and replace, and the disassembly and replacement process is convenient, which improves the flexibility during use, has good filtering effect, is light in wearing burden, is highly practical, and has high promotion and application value.

Claims

1. A dust mask used for communication within a coal mine underground, characterized in that: The invention comprises a main body frame (4), the main body frame (4) is an arc-shaped raised structure made of plastic material and surrounding the nose and mouth, a support frame (3) is hollowed out in the center of the main body frame (4), a filter cotton sheet (2) is clamped on the support frame (3), a filter housing (1) is movably connected on the support frame (3), the filter housing (1) is located outside the filter cotton sheet (2), a facial rubber skin (5) is arranged on the main body frame (4), the facial rubber skin (5) is in the shape of an equilateral triangle with rounded corners, the facial rubber skin (5) is closely attached to the nose wing, the main body frame (4) and the facial rubber skin (5) are combined, connecting pieces are arranged on both sides of the facial rubber skin (5), and communication equipment is arranged on the connecting pieces.

2. The dust mask for communication within a coal mine underground according to claim 1, characterized in that: The communication device comprises a microphone part (61) and an earphone part (62), wherein the earphone part (62) is a bone conduction earphone, and the bone conduction earphone comprises a flexible earphone rod (624), the flexible earphone rod (624) surrounds the neck, and earphone receivers (625) are arranged at both ends of the flexible earphone rod (624), the microphone part (61) is a miniature microphone, and the earphone receivers (625) are electrically connected to the miniature microphone.

3. The dust mask for communication within a coal mine underground according to claim 2, characterized in that: The connecting piece comprises a bone conduction headband (623), the bone conduction headband (623) is connected to a flexible earphone rod (624), both ends of the bone conduction headband (623) are connected to earbands (622), the upper part of the facial rubber skin (5) is perforated, the earbands (622) extend outward from the face through the perforated holes, an earband buckle (621) is provided at the protruding end of the earband (622), and the earband (622) is an elastic band.

4. The dust mask for intra-group communication in coal mines according to claim 3, characterized in that: A nasal inhalation valve (41) is provided on one side of the upper portion of the support frame (3), and an oral exhalation valve (42) is provided on the other side of the lower portion of the main body frame (4). The oral exhalation valve (42) is a one-way air outlet valve, and exhalation is performed through the oral exhalation valve (42). A miniature microphone is fixedly provided above the oral exhalation valve (42).

5. The dust mask for communication within a coal mine underground according to claim 4, characterized in that: The middle part of the filter housing (1) is a filter mesh (12), and a plurality of buckles (11) are provided on the lower edge of the filter housing (1), which are movably connected to the support frame (3) through the buckles (11).

6. The dust mask for intra-group communication in coal mines according to claim 1, characterized in that: The filter cotton sheet (2) uses a nanometer filter mesh with flame retardant and antistatic properties as the filter material.

7. The dust mask for intra-group communication in coal mines according to claim 1, characterized in that: The main body frame (4) is paved with velvet material on the side close to the face and nose.

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