Air supply filtering device of individual protection hood for coal mine

Abstract

The invention relates to an individual protection hood air supply filter device for a coal mine, which is characterized by comprising a power air supply electrical cabin (C01), a front detachable filter cabin (C02) and an energy storage power supply cabin (C03), the front detachable filter cabin (CO2) is positioned in front of the power air supply electrical cabin (C01) and is connected with the power air supply electrical cabin (C01) through a buckle; the energy storage power supply cabin (C03) is arranged below the power air supply electrical cabin (C01), and the energy storage power supply cabin (C03) and the power air supply electrical cabin (C01) are fixedly connected together; the intrinsically safe control circuit is arranged in the air supply filtering device, and the shell of the air supply filtering device adopts a groove and sealing compound sealing mode and has an IP54 waterproof and dustproof grade; the multi-stage dust removal and purification assembly is arranged, so that the purpose of efficiently removing dust with different particle sizes is achieved, and the technical requirements for dust removal efficiency and continuous operation duration are met.

Description

Technical Field

[0001] The present invention is an individual protection hood air supply and filtration device for coal mines, which relates to the field of coal mine dust protection, and specifically relates to an air supply and filtration device that can supply clean air to an individual protection hood for coal mine mining. Background Art

[0002] The working environment of coal mine mining is harsh. During the construction processes such as roadway driving, transportation, fully mechanized mining, and blasting mining, a large amount of dust will be generated, causing great harm to the respiratory systems of workers. Currently, workers generally wear dust masks with a high filtration level. Such masks have a large breathing resistance, which easily makes the user feel out of breath and have a sense of suffocation. The active air supply and filtration devices on the market have the functions of filtering air and actively supplying air, which can greatly improve the wearing comfort and are applied in fields such as medical and health, labor protection, and experimental research. However, the current products cannot be applied to the high-humidity and high-dust environment in coal mine shafts, and their safety has not reached the coal mine safety standards. Therefore, it is very necessary to invent an air supply and filtration device for individual protection hoods in coal mines (hereinafter referred to as "air supply and filtration device"). Summary of the Invention

[0003] The purpose of the present invention is to provide an individual protection hood air supply and filtration device for coal mines to realize an air supply and filtration device that meets the coal mine safety standards and can supply clean air to the protection hood.

[0004] An individual protection hood air supply and filtration device for coal mines, characterized in that it includes a power air supply electrical cabin C01, a front detachable filtration cabin C02, and an energy storage power supply cabin C03; the front detachable filtration cabin C02 is located in front of the power air supply electrical cabin C01, and the front detachable filtration cabin C02 is connected to the power air supply electrical cabin C01 through a buckle; the energy storage power supply cabin C03 is below the power air supply electrical cabin C01, and the energy storage power supply cabin C03 is fixedly connected to the power air supply electrical cabin C01;

[0005] Among them, the power air supply electrical cabin C01 includes a main housing 1, a rear cover 2, a fan rear cover 3, a vibration motor fixing plate 4, a display control light guide plate 5, a display control panel 6, and a power air supply electrical system; among them, the fan rear cover 3 is installed on the rear cover 2, the vibration motor fixing plate 4 is installed on the rear side of the main housing 1, and the display control light guide plate 5 and the display control panel 6 are installed on the upper surface of the main housing 1; the rear cover 2 is installed behind the main housing 1, and a power air supply electrical system is installed in the space formed between the main housing 1 and the rear cover 2. The air supply electrical system includes a fan 7, a control circuit board 8, a display control circuit board 9, and a vibration motor 10; the control circuit board 8 is respectively connected to the fan 7 and the vibration motor 10, and the display control circuit board 9 is connected to the control circuit board 8;

[0006] The front detachable filter cabin C02 includes a front cover 11, a metal filter screen 13, a primary filter cotton 14 and a filter box 15. Inside the front cover 11, there are three-stage filter components including a metal filter screen 13, a primary filter cotton 14 and a filter box 15 in sequence. A front cover snap button is provided on the front cover 11;

[0007] The energy storage power supply cabin C03 includes a battery box 16, a battery box cover 17, a lithium battery pack 18, a charging connector 19 and a connector sealing plug 20. The battery box cover 17 covers the battery box 16, and the battery box 17 and the battery box cover 16 are fixedly connected by screws; The lithium battery pack 18 is installed at the bottom inside the battery box 16, and heat-conducting silica gel is potted around it. The heat-conducting silica gel has the functions of heat conduction, shock absorption and preventing battery leakage; The charging connector 19 is fixed to the bottom inside the battery box 16 by screws and is beside the lithium battery pack 18; A connector sealing plug 20 is installed on the charging connector 19; When the air supply and filtering device is out of power, it can be charged through the charging connector 19 with a suitable charger.

[0008] The joint surface between the main shell 1 and the rear cover 2 is sealed by the method of "groove + sealant" Y01, which can effectively isolate the outside dust and moisture from entering the power supply air electrical cabin and ensure the reliability of the electrical cabin.

[0009] The energy storage power supply cabin C03 is fixed to the bottom of the power supply air electrical cabin C01 in the form of "large groove support + screw positioning" Y02. A large groove is opened on the front side of the battery box cover 17 of the energy storage power supply cabin C03, which cooperates with the large cantilever at the bottom of the main shell 1 to form a support. The rear side of the battery box 16 of the energy storage power supply cabin C03 is connected and fixed to the bottom of the rear cover 2 through 2 screws for positioning,

[0010] An air inlet is provided below the front cover 11 to effectively prevent the falling water droplets from entering the filter components and causing damage to the fan. At the same time, the dust in the air is not easy to enter the filter components under the action of gravity, which can effectively extend the service life of the filter components.

[0011] Advantages of the present invention

[0012] 1. The purpose of the present invention is to create an air supply and filtering device that meets the coal mine safety standards and can deliver clean air to the protective hood. The device contains an intrinsically safe control circuit, and the shell of the air supply and filtering device adopts the sealing form of "groove + sealant", with an IP54 waterproof and dustproof rating;

[0013] 2. The present invention sets up multi-stage dust removal and purification components to achieve the purpose of efficiently removing dust with different particle sizes, so as to meet the technical requirements of dust removal efficiency and continuous operation duration;

[0014] 3. The present invention adopts a lower air inlet design. Due to the action of gravity, the amount of coal dust entering the dust removal and purification components can be effectively reduced, and the service life of the purification components can be extended;

[0015] 4. The front detachable filter cabin of the present invention adopts a snap - fit design to ensure the convenient replacement of the dust removal and purification components.

[0016] 5. The present invention uses the form of "large - groove support + screw positioning" to fix the energy - storage power supply cabin. The fixing structure is simple and easy to assemble, but it cannot be disassembled by hand to avoid safety accidents caused by electric sparks generated when the wearer disassembles the battery components underground in the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 ; The three - dimensional external view of the present invention;

[0018] Figure 2 ; The layout diagram inside the power - supply air - blowing electrical cabin of the present invention;

[0019] Figure 3 ; The display and control panel diagram of the air - blowing filter device of the present invention;

[0020] Figure 4 ; The exploded view of the front detachable filter cabin of the air - blowing filter device of the present invention;

[0021] Figure 5 ; The exploded view of the energy - storage power supply cabin of the air - blowing filter device of the present invention;

[0022] Figure 6 ; The schematic diagram of the "groove + sealant" sealing form and the "large - groove support + screw positioning" fixing form of the present invention;

[0023] Figure 7 ; The working flow chart of the air - blowing filter device of the present invention.

[0024] (a) The normal working flow chart of the present invention;

[0025] (b) The prompt for clogging of the purification component and the replacement process of the present invention;

[0026] (c) The power - shortage prompt and the charging process of the present invention.

[0027] Among them, C01 is the power - supply air - blowing electrical cabin, C02 is the front detachable filter cabin, C03 is the energy - storage power supply cabin, 1 is the main shell, 2 is the rear cover, 3 is the rear cover of the fan, 4 is the fixing plate of the vibration motor, 5 is the display - control light - guiding plate, 6 is the display - control panel, 7 is the fan, 8 is the control circuit board, 9 is the display - control circuit board, 10 is the vibration motor, 11 is the front cover, 12 is the snap - fastener of the front cover, 13 is the metal filter screen, 14 is the primary filter cotton, 15 is the filter box, 16 is the battery box, 17 is the battery - box cover, 18 is the lithium - battery pack, 19 is the charging connector, 20 is the connector sealing plug, F01 is the lower air inlet of the front cover, F02 is the air inlet of the fan, F03 is the air outlet of the fan, Y01 is the "groove + sealant" sealing form, Y02 is the large - groove support form, and Y03 is the screw - positioning fixing form. DETAILED DESCRIPTION OF THE INVENTION

[0028] As Figure 1 shown, the air supply and filtration device mainly consists of a power air supply electrical cabin C01, a front detachable filtration cabin C02, and an energy storage power supply cabin C03. The power air supply electrical cabin C01 is the main part of the air supply and filtration device. The front detachable filtration cabin C02 is located in front of the power air supply electrical cabin C01 and is connected to the power air supply electrical cabin C01 through a buckle. The energy storage power supply cabin C03 is located below the power air supply electrical cabin C01 and is connected to the power air supply electrical cabin through the form of "large groove support + screw positioning".

[0029] As Figure 2 shown, the structural components of the power air supply electrical cabin C01 include a main shell, a rear cover, a fan rear cover, a vibration motor fixing plate, a display control light guide plate, and a display control panel. Among them, a power air supply electrical system is installed in the space formed between the main shell and the rear cover, including a fan assembly, a control circuit board, a display control circuit board, and a vibration motor. After the main shell 1 and the rear cover 2 are assembled, a space for accommodating the intrinsically safe electrical system is formed. The back of the main shell 1 integrates a fan front cover 3 and is provided with fixing pillars for the fan rear cover 11, which are fixedly connected to the fan rear cover 11 by screws. After connection, an air duct cavity is formed. The fan 7 is fixed to the inner wall of the fan rear cover by screws. The front of the main shell is provided with a fan air inlet, and the upper part of the fan rear cover is provided with an air outlet. The control circuit board is installed on the back of the main shell and fixed by screws. The display control circuit board is placed with a light guide plate, and the two are jointly clamped in the fixing groove in the upper right corner of the back of the main shell. The vibration motor is installed on the back of the main shell and fixed by the vibration motor fixing plate. The fan, the display control circuit board, and the vibration motor are connected to the control circuit board through communication cables. The energy storage power supply cabin is connected to the control circuit board through a power cable and supplies power. The control circuit board is for overall drive and control, and performs real-time control on the fan, the display control circuit board, and the vibration motor according to the operating state. The display control circuit board is distributed with indicator lights, switch buttons, and buzzers.

[0030] As Figure 3 shown, the bottom surface of the display control panel has an adhesive and is pasted above the air supply and filtration device to play a role in sealing the light guide plate and controlling the buttons. The display control panel includes a switch button, a clogging degree indicator light, an air volume indicator light, and a power quantity indicator light. Among them, the switch button is long-pressed for more than 3 seconds to turn on and off, and short-pressed to switch the air volume gear; the clogging degree indicator light indicates the clogging situation of the multi-stage dust removal and purification components. Under normal conditions, all 3 clogging indicator lights are off. One light on indicates slight clogging, two lights on indicate moderate clogging, and three lights on indicate severe clogging; the air volume indicator light is divided into two gears: low wind and high wind. When working, one light is on according to the air volume gear; the power quantity indicator light indicates the power state of the lithium battery pack. Four lights on indicate sufficient power, and the number of lit lights decreases sequentially with the power.

[0031] As Figure 4As shown in the figure, the structural parts of the front detachable filter cabin include a front cover and a front cover snap. The front cover is equipped with a metal filter, a primary filter cotton and a filter box, a total of three-stage filter components. The front cover can be opened by pressing the front cover snap and turning it upward at the same time. The filter components in the front cover can be replaced without the use of any tools, which is convenient to operate. The front cover snap is installed in the front cover and can be moved linearly to detach from the snap joint on the main shell. The snap design makes it easy for users to remove the front cover by hand, so as to quickly replace multi-stage dust removal and purification components.

[0032] Optionally, the front cover snap button body is made of elastic material that can be elastically deformed after being subjected to force, or a spring is provided between the front cover snap button and the front cover.

[0033] An air inlet is provided under the front cover, which can effectively prevent falling water drops from entering the filter assembly and causing damage to the fan. At the same time, dust in the air is not easy to enter the filter assembly under the action of gravity, which can effectively extend the service life of the filter assembly.

[0034] The multi-stage dust removal and purification component includes a three-stage filter component of a metal filter, a primary filter cotton and a dust filter box. The three-stage filtration can achieve the purpose of efficiently removing dust of different particle sizes to achieve the technical requirements of dust removal efficiency and continuous operation time.

[0035] The multi-stage dust removal and purification components are assembled in sequence in the front cover, and the dust filter box shell is fixed with the internal reinforcing ribs of the front cover by interference fit.

[0036] like Figure 5 As shown, the structural parts of the energy storage power supply cabin include a battery box and a battery box cover. The battery box contains a lithium battery pack, a charging connector and a connector sealing plug. The lithium battery pack is encapsulated with thermal conductive silicone around it, which has the functions of heat conduction, shock absorption and preventing battery leakage. When the air supply filter device is out of power, the air supply filter device can be charged through the charging connector using an adapted charger.

[0037] The battery box and the battery box cover are connected and fixed by screws, and the charging connector is fixed in the battery box by screws.

[0038] like Figure 6 As shown, the joint surface of the main shell and the back cover is sealed by the method of "groove + sealing glue", which can effectively isolate the dust and moisture from the outside from entering the power supply air electrical compartment, ensure the reliability of the electrical compartment, and have an IP54 waterproof and dustproof level. The air supply filter device uses the form of "large groove support + screw positioning" to fix the energy storage power supply compartment to the bottom of the power supply air electrical compartment. The front side of the battery box cover of the energy storage power supply compartment has a large groove, which cooperates with the large cantilever at the bottom of the main shell to form a support. The rear side of the battery box of the energy storage power supply compartment is connected, fixed and positioned with the bottom of the back cover by 2 screws. This structure is simple and easy to assemble, but it cannot be disassembled by hand to avoid electric sparks caused by the wearer disassembling the battery assembly in the mine and causing safety accidents.

[0039] Usage

[0040] As Figure 7 shown, when the air supply and filtration device is in use, long press the power on / off key to start the device. The indicator light will turn on, and at the same time, the fan will operate to generate suction. The ambient air enters through the air inlet under the front cover, is filtered by the multi-stage dust removal and purification component, enters the fan, and is discharged through the fan outlet. After the air supply and filtration device is started, it defaults to the low wind speed gear. During operation, short press the power on / off key to switch the wind speed gear. The wind speed indicator light shows the high wind speed gear or the low wind speed gear according to the actual gear. During use, when the multi-stage dust removal and purification component is blocked, the blockage indicator light will turn on according to the degree of blockage. One light will turn on for slight blockage, two lights will turn on for moderate blockage, and three lights will turn on for severe blockage. At the same time, the buzzer will give a sound prompt. It will beep 2 times for slight blockage, 5 times for moderate blockage, and continuously beep for severe blockage. After the blockage, the fan will automatically increase the speed to maintain the air volume at the set level. However, the adjustment ability of the fan is limited. It is recommended to turn off the device and replace the multi-stage dust removal and purification component when there is moderate blockage. It is necessary to replace the new purification component before using when severe blockage is prompted.

[0041] During use, when the air supply and filtration device is out of power, all the power-on indicator lights will go out or only the bottommost one will turn on. The buzzer will beep continuously to give a prompt, and at the same time, the vibration motor will rotate to generate vibration for a prompt. The user should turn off the device and charge the air supply and filtration device.

Claims

1. An individual protection hood air supply and filtration device for coal mines, characterized in that, It includes a power supply and air supply electrical cabin (C01), a front detachable filter cabin (C02), and an energy storage power supply cabin (C03); the front detachable filter cabin (C02) is located in front of the power supply and air supply electrical cabin (C01), and the front detachable filter cabin (C02) is connected to the power supply and air supply electrical cabin (C01) by a buckle; the energy storage power supply cabin (C03) is below the power supply and air supply electrical cabin (C01), and the energy storage power supply cabin (C03) is fixedly connected to the power supply and air supply electrical cabin (C01); Among them, the power supply and air supply electrical cabin (C01) includes a main housing (1), a rear cover (2), a fan rear cover (3), a vibration motor fixing plate (4), a display control light guide plate (5), a display control panel (6), and a power supply and air supply electrical system; among them, the fan rear cover (3) is installed on the rear cover (2), the vibration motor fixing plate 4 is installed on the rear side of the main housing (1), and the display control light guide plate (5) and the display control panel (6) are installed on the upper surface of the main housing (1); the rear cover (2) is installed behind the main housing (1), and a power supply and air supply electrical system is installed in the space formed between the main housing (1) and the rear cover (2). The air supply electrical system includes a fan (7), a control circuit board (8), a display control circuit board (9), and a vibration motor (10); the control circuit board (8) is respectively connected to the fan (7) and the vibration motor (10), and the display control circuit board (9) is connected to the control circuit board (8); The front detachable filter cabin (C02) includes a front cover (11), a metal filter screen (13), a primary filter cotton (14), and a filter box (15). A total of three-stage filter components, namely the metal filter screen (13), the primary filter cotton (14), and the filter box (15), are successively installed in the front cover (11), and a front cover snap button is provided on the front cover (11); The energy storage power supply cabin (C03) includes a battery box (16), a battery box cover (17), a lithium battery pack (18), a charging connector (19), and a connector sealing plug (20). The battery box cover (17) covers the battery box (16), and the battery box (17) and the battery box cover (16) are fixedly connected by screws; the lithium battery pack (18) is installed at the bottom inside the battery box (16), and heat-conducting silicone is potted around it. The heat-conducting silicone has the functions of heat conduction, shock absorption, and preventing battery leakage; the charging connector (19) is fixed to the bottom inside the battery box (16) by screws and is next to the lithium battery pack (18); a connector sealing plug (20) is installed on the charging connector (19); when the air supply and filtering device is out of power, it can be charged through the charging connector (19) with a suitable charger.

2. The individual protection hood air supply and filtration device for coal mines according to claim 1, characterized in that, The joint surface of the main housing (1) and the rear cover (2) is sealed by the method of "groove + sealant" (Y01), which can effectively isolate the entry of external dust and moisture into the power supply and air supply electrical cabin and ensure the reliability of the electrical cabin.

3. The individual protection hood air supply and filtration device for coal mines according to claim 1, characterized in that, The energy storage power supply cabin (C03) is fixed to the bottom of the power supply and electrical cabin (C01) in the form of "large groove support + screw positioning" (Y02). A large groove is opened on the front side of the battery box cover (17) of the energy storage power supply cabin (C03), which cooperates with the large cantilever at the bottom of the main shell 1 to form a support. The rear side of the battery box (16) of the energy storage power supply cabin (C03) is connected and fixed to the bottom of the rear cover (2) through two screws for positioning.

4. The individual protection hood air supply and filtration device for coal mines according to claim 1, characterized in that An air inlet is provided below the front cover (11) to effectively prevent falling water droplets from entering the filter assembly and causing damage to the fan. At the same time, dust in the air is not easily introduced into the filter assembly under the action of gravity, which can effectively extend the service life of the filter assembly.

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