Mining power air supply mask

Abstract

The mining power air supply mask comprises a power air supply main machine (1), a hush pipe (2), an air supply hose (3) and a protective helmet (4). The power air supply main machine (1) is connected with the hush pipe (2), the hush pipe (2) is further connected with the air supply hose (3), and the air supply hose (3) is connected with the protective helmet (4). The safety helmet is characterized in that the protective helmet (4) comprises a helmet main body structure (403), a safety helmet head hoop (406), a head air supply pipeline (402), a protective shawl (401), a rotating shaft (405), a transparent mask (408) and single-air-permeability cloth (409); the air conditioner has the function of adjusting the air supply amount in real time, and air can be supplied in real time according to the human motion state and the needed air amount.

Description

Technical Field

[0001] The present invention relates to the field of mine safety protection articles, and particularly to a powered air-purifying respirator for underground mine breathing protection. Background Art

[0002] As a breathing protection device applied in coal mines, the principle of a mine-powered air-purifying respirator is that a fan provides powered air supply, and dust particles in the dust-containing air are removed through a filtration system, and clean air is obtained and supplied into the respirator for human breathing. It is of great significance to ensure the physical health of underground coal mine workers and protect them from the influence of dust particles. While meeting performance indicators such as air supply volume and dust filtration efficiency, the mine-powered air-purifying respirator also needs to meet coal mine safety requirements and conduct intrinsically safe design.

[0003] The mine-powered air-purifying respirator mainly realizes two functions. One is the safety protection function, that is, through the integration of a face shield and a safety helmet, it provides safe head and face protection for underground mine workers; the other is to purify the ambient air and send it into a relatively sealed protective respirator to create a clean microenvironment for human breathing, and at the same time, the air supply volume is adjusted in real time to meet the breathing volume requirements of the human body in different states. Summary of the Invention

[0004] The present invention designs a mine-powered air-purifying respirator. The respirator is powered by a fan to supply air, and dust particles in the dust-containing air are removed through a filtration system, and clean air is obtained and supplied into the respirator for human breathing.

[0005] A mine-powered air-purifying respirator includes a powered air supply main unit 1, a silencing pipe 2, an air supply hose 3 and a protective helmet 4; the powered air supply main unit 1 is connected to the silencing pipe 2, the silencing pipe 2 is further connected to the air supply hose 3, and the air supply hose 3 is connected to the protective helmet 4; characterized in that the protective helmet 4 includes a helmet main body structure 403, a safety helmet headband 406, a head air supply pipeline 402, a protective cape 401, a rotating shaft 405, a transparent face shield 408 and a single breathable cloth 409; when the transparent face shield 408 is closed, it is embedded in the single breathable cloth 409, the transparent face shield 408 adopts a design that can be turned up, and is connected to the helmet main body structure 403 through the rotating shaft 405; the single breathable cloth 409 is further connected to the front edge of the helmet main body structure 403; it is hermetically connected to the front edge of the helmet main body structure 403 through a face sealing band 407; both sides of the single breathable cloth 409 and the front edge of the helmet main body structure 403 are sealed; a safety helmet headband 406 and a head air supply pipeline 402 are provided inside the helmet main body structure 403, and the head air supply pipeline 402 is connected to the air supply hose 3; a protective cape 401 is connected to the rear part of the helmet main body structure 403.

[0006] The described head air supply pipeline 402 is within the helmet main body structure 403 and closely adheres to the top contour of the helmet main body structure 403. The end of the head air supply pipeline 402 is in a horn shape, ensuring that the air passing through the air supply pipe can evenly cover the face while reducing the air supply resistance.

[0007] The described power air supply main unit 1 includes a battery compartment 101, an intrinsically safe battery 102, a main control circuit 103, a main unit body structure 104, a high-efficiency filter box 105, a primary filter cotton 106, a filter box cover 107, a metal filter screen 108, a display and control panel 109, an intrinsically safe fan 110, a fan housing 111, a main unit rear cover 112, and a vibration motor 113; the intrinsically safe battery 102 is installed in the battery compartment 101, and the battery compartment 101 is fixedly connected to the main unit body structure 104 by screws, with a charging interface left at its lower part; the display and control panel 109 is installed on the upper surface of the main unit body structure 104; the main control circuit 103 connects the intrinsically safe battery 102 and the display and control panel 109 together; a vibration motor 113 is installed on the main unit body structure 104; an intrinsically safe fan 110, a fan housing 111, and a main unit rear cover 112 are successively installed behind the main unit body structure 104; a high-efficiency filter box 105, a primary filter cotton 106, a metal filter screen 108, and a filter box cover 107 are installed in front of the main unit body structure 104.

[0008] The display and control panel 109 includes a switch button, a blockage degree indicator light, a wind volume indicator light, and a power quantity indicator light; it can control the power on / off, switch the wind volume, and display the power quantity and blockage degree, can feedback the power quantity, blockage state, and wind volume information, can drive the intrinsically safe fan 110 through instructions, and can simultaneously collect the fan current in real time for intelligent control.

[0009] The described fan housing 111 is installed on the main unit body structure 104 by screws, and forms an air supply cavity with the groove structure of the main unit body structure 104.

[0010] The described main unit rear cover 112 is installed on the main unit body structure 104 by screws to protect the structures of the main control circuit 103, the vibration motor 113, and the intrinsically safe fan 110 from external force damage.

[0011] The described vibration motor 113 is installed on the main unit body structure 104 and is connected to the main control circuit 103 through a wire. When the battery power is too low or the air supply system is blocked, the vibration motor 113 vibrates for alarm.

[0012] The described intrinsically safe battery 102 uses a large-capacity lithium manganate battery to meet the requirements of coal mine safety.

[0013] A lighting lamp 404 is provided on the helmet main body structure 403.

[0014] Below the filter cartridge cover 107 there is an air inlet, and on the side there is a snap structure 114 connected to the main body structure 104 of the host, facilitating the user to remove the front cover by hand for quickly replacing the multi-stage dust removal and purification components; the ambient air first passes through the metal filter screen 108 to filter large particulate coal dust; then it passes through the primary filter cotton 106 to separate the dust with larger particle sizes in the air, achieving secondary filtration; the high-performance filter cartridge 105 is formed by folding filter materials into multiple pleated shapes, increasing the dust capacity and achieving refined dust filtration, filtering particulate dust and suspended matter larger than 5 μm in the air.

[0015] Advantageous effects

[0016] 1. The present invention has an intrinsically safe design, meets the requirements of coal safety, and can be used for underground operations; the present invention integrates two functions of a safety helmet and air supply, that is, while providing head protection for underground workers, fresh air can also be sent into the face mask through the air supply pipeline. The present invention adopts intrinsically safe batteries, intrinsically safe fans, and intrinsically safe circuit boards.

[0017] 2. The present invention has the function of adjusting the air supply volume in real time, and can supply air in real time according to the human body's movement state and the required air volume.

[0018] 3. The present invention has a filter cartridge blockage alarm function. When the filter cartridge is used beyond the expiration date or becomes blocked, it can give a buzzer and vibration alarm. Description of the drawings

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic structural diagram of the protective helmet of the present invention;

[0021] (a) A three-dimensional view of the protective helmet of the present invention;

[0022] (b) A side view of the protective helmet of the present invention;

[0023] Figure 3 is an exploded view of the protective helmet of the present invention;

[0024] Figure 4 is a schematic structural diagram of the power air supply host of the present invention;

[0025] Figure 5 is an exploded view of the power air supply host of the present invention;

[0026] Figure 6 is an exploded view of the air purification and filtration system of the present invention. Detailed implementation manners

[0027] It is of great significance to ensure the physical health of underground coal mine workers and protect them from the impact of dust particles. This powered air-purifying respirator has been designed for intrinsic safety. The battery, fan, and main control board all meet the mining safety standards, and the materials exposed to the air are all flame-retardant and anti-static materials. The overall mask can pass the coal mine safety certification.

[0028] The overall structure of the mine-used powered air-purifying respirator is as Figure 1 shown, consisting of a powered air supply main unit 1, a silencing pipe 2, an air supply hose 3, and a protective helmet 4. The powered air supply main unit 1 has the functions of air supply and filtration. The main unit filtration system can filter dust particles in the air, and the fan sends the clean air through the silencing pipe 2 and the air supply hose 3 into the protective helmet 4. The protective helmet 4 integrates the functions of air supply and safety helmet, protects the head, and forms a local air supply cavity inside the mask, isolating it from the external dust environment. The silencing pipe 2 is an air supply pipeline with sound-absorbing cotton inside, and its two ends can be respectively connected to the powered air supply main unit 1 and the air supply hose 3. The air supply hose 3 is a telescopic hollow hose, and the material is flame-retardant and anti-static PC.

[0029] The protective helmet 4 is as Figure 2 and 3 shown, consisting of a helmet main structure 403, a safety helmet headband 406, a head air supply pipeline 402, a protective cape 401, a rotating shaft 405, a face sealing belt 407, a transparent face shield 408, and a single breathable cloth 409. The protective helmet 4 is designed according to the safety helmet design standard, and its material is selected as flame-retardant and anti-static ABS material, meeting the use requirements of underground protection equipment; its top is designed with reinforcing ribs to ensure the strength of the helmet. The wearing method of the protective headgear 4 is similar to that of general protective headgear and safety helmets. After the user wears it, the tightness can be adjusted by turning the knob at the back of the safety helmet headband 406.

[0030] After the filtered air is sent to the protective helmet through the air supply pipeline 3, it is then sent to the face cavity through the head air supply pipeline 402. The head air supply pipeline 402 closely follows the contour of the top of the helmet, and the end is in a horn shape, ensuring that the air passing through the air supply pipe can evenly cover the face and at the same time reducing the air supply resistance.

[0031] The transparent face shield 408 adopts a design that can be turned up, and is connected to the helmet main structure 403 through the rotating shaft 405. The face shield turns down to cover the user's eyes, mouth, nose, and lower jaw. The face seal 407, the transparent face shield 408, and the single breathable cloth 409 form a closed space in front of the human face. Under normal air supply conditions, the sealed cavity is in a positive pressure environment, preventing the inhalation of dust and ensuring the safety of workers working in extreme underground environments.

[0032] The protective cape 401 is made of flame-retardant and anti-static material, which can prevent coal dust from protecting the shoulders and necks and provide comprehensive protection for the lower part of the head.

[0033] On the basis of meeting the functional requirements, the design of the power supply air blower main unit 1 aims at miniaturization and light weight, taking into account safety, aesthetics and comfort. The structure of the power supply air blower main unit is made of flame-retardant and anti-static ABS material. The inner cavity of the main unit is fully enclosed by means of grooves, sealant, etc., with the functions of waterproof and dustproof, and the protection level is IP54.

[0034] As shown in Figure 4 the figure, the power supply air blower main unit 1 adopts a symmetric three-dimensional curved surface design. The overall shape combines large rounded corners with straight lines, being round and full. There is a display and control panel 109 on the upper part for easy operation and observation. The lower air inlet is simple and practical, which can effectively increase the service time of the built-in filter component. The back of the product adopts a curved design, fitting the human waist, and cooperating with the waist belt to use, increasing comfort.

[0035] The power supply air blower main unit 1 is composed of a battery compartment 101, an intrinsically safe battery 102, a main control circuit 103, a main body structure 104 of the main unit, a high-efficiency filter box 105, a primary filter cotton 106, a filter box cover 107, a metal filter screen 108, a display and control panel 109, an intrinsically safe fan 110, a fan housing 111, a rear cover 112 of the main unit, and a vibration motor 113.

[0036] The battery compartment 101 is used to fix and protect the intrinsically safe battery 102, and is fixedly connected to the main body structure 104 of the main unit by screws. There is a charging interface at its lower part.

[0037] The intrinsically safe battery 102 adopts a large-capacity lithium manganate battery, meeting the requirements of coal mine safety.

[0038] The main control circuit 103 can receive the control signals of the display and control panel 109, and feedback information such as battery power, blockage status, air volume, etc. It can drive the intrinsically safe fan 110, and at the same time can collect the fan current in real time, facilitating intelligent control.

[0039] The display and control panel 109 includes a switch button, a blockage degree indicator light, an air volume indicator light and a battery power indicator light. It can control the power on / off and air volume switching, and display the battery power and blockage degree.

[0040] The intrinsically safe fan 110 is a key component for air supply. It rotates at a high speed, inhaling the ambient air into the power supply air blower main unit 1, and after filtering, sending it into the protective helmet 4. The intrinsically safe fan 110 has low power consumption and high rotation speed, meeting the requirements of coal mine safety.

[0041] The fan housing 111 is installed on the main body structure 104 of the main unit by screws, and forms an air supply cavity with the groove structure of the main body structure 104 of the main unit.

[0042] The rear cover 112 of the main unit is installed on the main body structure 104 of the main unit by screws, protecting structures such as the main control circuit 103, the vibration motor 113, and the intrinsically safe fan 110.

[0043] The vibration motor 113 is installed on the main body structure 104 of the host and is connected to the main control circuit 103 through a wire. When the battery power is too low or the air supply system is blocked, the vibration motor 113 vibrates to give an alarm.

[0044] The air purification and filtration system is the core function of the mine-used powered air-supplied face mask. Considering the high-humidity and high-dust environment underground, a three-stage filtration consisting of a metal filter screen 108, a primary filter cotton 106, and a high-efficiency filter cartridge 105 is adopted to protect the working life and filtration efficiency of the core components.

[0045] The air purification and filtration system is as Figure 6 shown. A multi-stage dust removal and purification structure is set up to achieve the purpose of efficiently removing dust of different particle sizes, so as to meet the technical requirements of dust removal efficiency and continuous operation duration. There is an air inlet under the filter cartridge cover 107, and a snap structure 114 on the side is connected to the main body structure 104 of the host, which is convenient for the user to remove the front cover by hand to quickly replace the multi-stage dust removal and purification components.

[0046] The ambient air first passes through the metal filter screen 108 to filter large coal dust particles; then passes through the primary filter cotton 106 to separate larger dust particles in the air, achieving secondary filtration; the high-performance filter cartridge 105 is formed by folding the filter material into multiple layers of corrugations to increase the dust capacity and achieve refined dust filtration, filtering particulate dust and suspended matter larger than 5 μm in the air.

Claims

1. A mine-use powered air-supplied face mask, comprising a powered air supply main unit (1), a silencing pipe (2), an air supply hose (3) and a protective helmet (4); the powered air supply main unit (1) is connected to the silencing pipe (2), the silencing pipe (2) is further connected to the air supply hose (3), and the air supply hose (3) is connected to the protective helmet (4); characterized in that, The described protective helmet (4) includes a helmet main body structure (403), a safety helmet headband (406), a head air supply pipeline (402), a protective cape (401), a rotating shaft (405), a transparent face shield (408), and a single breathable cloth (409); when the transparent face shield (408) is closed, it is embedded in the single breathable cloth (409), and the transparent face shield (408) adopts an upward-flipping design and is connected to the helmet main body structure (403) through the rotating shaft (405); the single breathable cloth (409) is also connected to the front edge of the helmet main body structure (403); it is hermetically connected to the front edge of the helmet main body structure (403) through a facial sealing band (407); both sides of the single breathable cloth (409) and the front edge of the helmet main body structure (403) are sealed; a safety helmet headband (406) and a head air supply pipeline (402) are provided inside the helmet main body structure (403), and the head air supply pipeline (402) is connected to the air supply hose (3); a protective cape (401) is connected to the rear of the helmet main body structure (403).

2. The powered air-supplied face mask for mine use according to claim 1, wherein The described head air supply pipeline (402) is inside the helmet main body structure (403) and closely adheres to the top contour of the helmet main body structure (403). The end of the head air supply pipeline (402) is in a horn shape, ensuring that the air passing through the air supply pipe can evenly cover the face and at the same time reducing the air supply resistance.

3. The powered air-purifying respirator for mine use according to claim 1 or 2, characterized in that, The described power air supply main machine (1) includes a battery compartment (101), an intrinsically safe battery (102), a main control circuit (103), a main machine main body structure (104), a high-efficiency filter box (105), a primary filter cotton (106), a filter box cover (107), a metal filter screen (108), a display control panel (109), an intrinsically safe fan (110), a fan shell (111), a main machine rear cover (112), and a vibration motor (113); the intrinsically safe battery (102) is installed in the battery compartment (101), and the battery compartment (101) is fixedly connected to the main machine main body structure (104) by screws, and a charging interface is left at its lower part; the display control panel (109) is installed on the upper surface of the main machine main body structure (104); the main control circuit (103) connects the intrinsically safe battery (102) and the display control panel (109) together; a vibration motor (113) is installed on the main machine main body structure (104); an intrinsically safe fan (110), a fan shell (111), and a main machine rear cover (112) are successively installed behind the main machine main body structure (104); a high-efficiency filter box (105), a primary filter cotton (106), a metal filter screen (108), and a filter box cover (107) are installed in front of the main machine main body structure (104).

4. The powered air-purifying respirator for mine use according to claim 3, wherein The display control panel (109) includes a switch button, a blockage degree indicator light, an air volume indicator light, and a power quantity indicator light; it can control the power on and off, switch the air volume, and display the power quantity and blockage degree, can feedback the power quantity, blockage state, and air volume information, can drive the intrinsically safe fan (110) through instructions, and can simultaneously collect the fan current in real time for intelligent control.

5. The powered air-purifying respirator for mine according to claim 4, wherein, The fan housing (111) is installed on the main body structure (104) of the host by screws, and forms a air supply cavity with the groove structure of the main body structure (104) of the host.

6. The powered air-purifying respirator for mine use according to claim 4, wherein, The rear cover of the host (112) is installed on the main body structure (104) of the host by screws to protect the main control circuit (103), the vibration motor (113) and the intrinsically safe fan (110) from external force damage.

7. The powered air-purifying respirator for mine use according to claim 6, wherein, The vibration motor 113 is installed on the main body structure (104) of the host and is connected to the main control circuit (103) by wires. When the battery power is too low or the air supply system is blocked, the vibration motor (113) vibrates to give an alarm.

8. The powered air-purifying respirator for mine according to claim 1, characterized in that, The intrinsically safe battery 102 uses a large-capacity lithium manganate battery to meet the requirements of coal mine safety.

9. The powered air-purifying respirator for mine according to claim 1 or 2, characterized in that, A lighting lamp (404) is provided on the helmet main body structure (403).

10. A mine-use power supply air-supplied face mask according to claim 1 or 2, characterized in that, There is an air inlet below the filter box cover (107), and a snap structure (114) on the side is connected to the main body structure (104) of the host, which is convenient for the user to remove the front cover by hand so as to quickly replace the multi-stage dust removal and purification components; the ambient air first passes through the metal filter screen (108) to filter large-particle coal dust; then passes through the primary filter cotton (106) to separate the dust with a larger particle size in the air to achieve secondary filtration; the high-performance filter box (105) is formed by folding the filter material into multiple layers of corrugated shapes to increase the dust capacity and achieve fine dust filtration, filtering the particulate dust and suspended matter larger than 5μm in the air.

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