Mining flame-proof and intrinsically safe permanent magnet high-voltage vacuum power distribution device

Abstract

The invention relates to the technical field of power distribution, in particular to a mining flameproof and intrinsically safe permanent magnet high-voltage vacuum power distribution device which comprises a bottom frame and an explosion-proof box body, the explosion-proof box body is fixedly connected to the top of the bottom frame, a dust removal box is fixedly connected in the bottom frame, a condensation box is arranged at the top of the dust removal box, and at least one ventilation channel is connected between the dust removal box and the condensation box. A filter screen arranged according to a concentric-square-shaped path is arranged in the dust removal box, the filter screen slidably penetrates through the ventilation channel and is used for filtering dust and impurities in air passing through the ventilation channel, and a driving assembly used for driving the filter screen to move along the concentric-square-shaped path and a cleaning assembly used for cleaning the filter screen are further arranged in the dust removal box. The filter screen is driven by the driving assembly to continuously move, the moving filter screen is cleaned through the rolling brush, the filter screen is kept clean and unblocked, and therefore smooth air circulation and the heat dissipation effect are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution, and in particular to a permanent magnetic high-voltage vacuum power distribution device for mines with both explosion-proof and intrinsic safety. Background Art

[0002] In high-risk industries such as coal mines, metal mines, petroleum, and chemicals, flameproof distribution cabinets are key distribution devices. Their safety and stability are directly related to the safety and efficiency of production operations, especially in environments with explosive gases or flammable and explosive dust, such as underground coal mines, which place extremely high demands on the flameproof and intrinsic safety protection performance of distribution equipment. After searching, the patent with authorization announcement number CN215870501U discloses a highly safe flameproof permanent magnet high-voltage vacuum distribution device, which drives the fan blades to rotate through a designed drive motor to achieve air flow and heat dissipation inside the explosion-proof shell, effectively alleviating the problem of excessive temperature inside the equipment, but it still faces many challenges in practical applications.

[0003] First, there is a large amount of dust in the mining environment. These dust particles are easy to adhere to the filter and gradually clog the filter over time, affecting air circulation and heat dissipation. Secondly, although the explosion-proof shell of the patented distribution device has good explosion-proof performance, in extreme cases, such as when an explosion occurs accidentally inside the explosion-proof shell for some reason, the heat dissipation grooves on it may become a channel for the flame to spread outward, easily causing a larger fire or explosion. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a permanent magnet high-voltage vacuum power distribution device for mining with both explosion-proof and intrinsic safety.

[0005] The technical solution is: a mine explosion-proof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device, including a base frame and an explosion-proof box, the explosion-proof box is fixedly connected to the top of the base frame, a dust removal box is fixedly connected to the base frame, a condensation box is arranged on the top of the dust removal box, at least one ventilation channel is connected between the dust removal box and the condensation box, a filter screen arranged along a zigzag path is arranged in the dust removal box, the filter screen slides through the ventilation channel, the filter screen is used to filter out dust and debris in the air passing through the ventilation channel, and a filter screen is also provided in the dust removal box for driving the filter screen to move along the zigzag path. The explosion-proof box body is provided with a plurality of baffles which are slidably connected to the air inlet and the air outlet, and the positions of the plurality of baffles respectively correspond to the air inlet and the air outlet. An elastic member is connected between the explosion-proof box body and the baffles, and a ventilation gap is left between the baffles and the explosion-proof box body. When all the baffles are moved close to the explosion-proof box body, the air inlet and the air outlet can be closed.

[0006] As a preferred technical solution of the present invention, the driving assembly includes a motor, a toothed belt and a roller. Four rollers are arranged in a circular shape and rotatably connected in the dust removal box. Two toothed belts are wound around the outer circumference of all the rollers at intervals. The rollers have teeth matching the toothed belts. The filter is fixedly connected between the two toothed belts. A motor is installed on the top of the dust removal box, and the output shaft of the motor is connected to one of the rollers.

[0007] As a preferred technical solution of the present invention, the cleaning component includes a roller brush, a group of roller brushes are rotatably connected on the left and right sides of the top of the dust removal box, each group of roller brushes are symmetrically distributed on the inner and outer sides of the filter, a gear is fixed to the upper part of the roller brush, and a Y-shaped rod is slidably connected on the left and right sides of the top of the dust removal box, the Y-shaped rod has a U-shaped section, and both sides of the U-shaped section of the Y-shaped rod have teeth matching the gear, and when the Y-shaped rod moves linearly, it can drive the roller brush to rotate to clean the filter.

[0008] As a preferred technical solution of the present invention, one end of the Y-shaped rod is fixedly connected to a sliding frame, and the tops of two rollers that are not directly connected to the motor are fixedly connected to fixed rods, the fixed rods are away from the axis of the rollers, and the tops of the fixed rods are located in the sliding frame. When the rollers rotate, the fixed rods move in the sliding frame while rotating with the rollers, thereby converting the rotational motion of the rollers into linear motion of the Y-shaped rod.

[0009] As a preferred technical solution of the present invention, at least one pawl is fixedly connected to the baffle, a ratchet bar is slidably connected to the explosion-proof box body next to the pawl, and an elastic member 2 is connected between the explosion-proof box body and the ratchet bar. The teeth of the ratchet bar match the pawl, and when the ratchet bar is engaged with the pawl, the movement of the baffle plate in a direction away from the explosion-proof box body can be limited.

[0010] As a preferred technical solution of the present invention, it also includes a water tank, a pump and a nozzle. The water tank is fixedly connected to the middle part of the dust removal box, and the top of the water tank is connected to the bottom of the condensation box. The water tank is used to receive the water condensed in the condensation box. A pump is installed on the side of the water tank. The water inlet end of the pump is connected to the water tank through a water pipe. There are two nozzles, one end of the two nozzles is respectively located above the two groups of roller brushes, and the other ends of the two nozzles are connected to the water outlet end of the pump after merging.

[0011] As a preferred technical solution of the present invention, a liquid level sensor is provided in the water tank, and the liquid level sensor is used to monitor the water level in the water tank and drain the water in time.

[0012] As a preferred technical solution of the present invention, a collecting box is fixedly connected to the bottom of the dust removal box, and a sewage outlet communicating with the collecting box is opened at the bottom of the dust removal box.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention drives the filter to move continuously through the driving assembly, and cleans the moving filter through the roller brush to keep the filter clean and unobstructed, thereby ensuring smooth air circulation and heat dissipation effect. At the same time, by setting a condensation box to condense the air, it not only effectively removes moisture in the air, but also reduces the air temperature, thereby improving the heat dissipation efficiency and ensuring the safe and stable operation of the distribution device in harsh environments.

[0015] 2. The present invention adds baffles at the air inlet and outlet of the explosion-proof box, and installs pawls and ratchet bars on the baffles. Under normal circumstances, the baffles do not affect air circulation; but when a deflagration occurs, the baffles quickly move close to the explosion-proof box under the action of the explosion shock wave, closing the air inlet and outlet, effectively preventing the spread of flames and shock waves, and enhancing the explosion-proof performance of the distribution device. The interaction between the pawl and the ratchet bar further ensures the stability of the baffle in a closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a cross-sectional schematic diagram of the dust removal box of the present invention.

[0018] Figure 3 It is a schematic diagram of the installation structure of the drive assembly and the filter screen of the present invention.

[0019] Figure 4 It is a schematic diagram of the installation structure of the cleaning component of the present invention.

[0020] Figure 5 It is a schematic diagram of the installation structure of the Y-shaped rod, the sliding frame and the fixed rod of the present invention.

[0021] Figure 6 It is a cross-sectional schematic diagram of a water storage tank of the present invention.

[0022] Figure 7 It is a cross-sectional schematic diagram of the explosion-proof box of the present invention.

[0023] Figure 8 It is a schematic diagram of the partial structure of the pawl and the ratchet bar of the present invention.

[0024] Markings in the figure are: 1-base frame, 2-explosion-proof box, 201-air inlet, 202-air outlet, 3-dust removal box, 301-drain outlet, 4-condensation box, 5-ventilation channel, 6-filter, 701-motor, 702-toothed belt, 703-roller, 801-roller brush, 802-gear, 803-Y-shaped rod, 901-sliding frame, 902-fixed rod, 10-fan, 11-baffle, 12-elastic part 1, 13-paw, 14-ratchet bar, 141-elastic part 2, 15-water tank, 16-pump, 17-nozzle, 18-liquid level sensor, 19-collection box. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0027] In the description of the present invention, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0029] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments, but are not intended to limit the present invention.

[0030] See also Figure 1A mine flameproof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device, comprising a base frame 1 and an explosion-proof box 2, the explosion-proof box 2 is fixed to the top of the base frame 1, the power distribution device body is located in the explosion-proof box 2, and a controller is arranged on the left side of the explosion-proof box 2. The explosion-proof box 2 is the main flameproof component of the power distribution device. The present invention has no specific technical requirements for the specific structural form of the explosion-proof box 2. Please refer to Figure 1 and Figure 2 The dust collecting box 3 is fixedly connected in the bottom frame 1, and a condensation box 4 is arranged between the top of the dust collecting box 3 and the bottom of the explosion-proof box body 2. A condensation device is arranged in the condensation box 4. Two ventilation channels 5 are connected between the dust collecting box 3 and the condensation box 4. The two ventilation channels 5 are arranged front and back. The ventilation channels 5 are partially located inside the dust collecting box 3. After the external air enters the condensation box 4 through the ventilation channels 5, the water vapor in the air can be condensed into liquid water by the condensation device, and the temperature of the air will be reduced. A filter screen 6 arranged along a meandering path is arranged in the dust collecting box 3. The front and rear sections of the meandering filter screen 6 slide through the two ventilation channels 5 respectively. The air passing through the ventilation channel 5 will be filtered out of the dust and debris mixed therein by the filter screen 6. A driving component for driving the filter screen 6 to move along the meandering path and a cleaning component for cleaning the filter screen 6 are also provided in the dust collecting box 3. The cleaning component can be cleaned during the movement of the filter screen 6, so that the filter screen 6 can be cleaned in time after filtering out impurities in the air, so as to ensure the filtering effect of the filter screen 6 and the smooth flow of air. Figure 7 and Figure 8 The bottom left and right sides of the explosion-proof box 2 are provided with two air inlets 201 connected to the top of the condensation box 4. The top of the explosion-proof box 2 is provided with an air outlet 202. A fan 10 is installed in the air outlet 202. The fan 10 is used to exhaust the air inside the explosion-proof box 2 and form a negative pressure inside the explosion-proof box 2, so that the air after condensation in the condensation box 4 enters the explosion-proof box 2 through the air inlet 201. In this way, a circulating air flow is formed inside the explosion-proof box 2. The air can absorb the heat generated by the power distribution device body during the flow process. The explosion-proof box 2 There are three baffles 11 in the internal sliding connection, and the positions of the three baffles 11 correspond to the two air inlets 201 and the air outlet 202 respectively. An elastic part 12 is connected between the explosion-proof box 2 and the baffle 11. When the power distribution device is working normally, a ventilation gap is left between the baffle 11 and the explosion-proof box 2 under the elastic action of the elastic part 12. When an explosion occurs accidentally inside the explosion-proof box 2, all the baffles 11 move quickly close to the explosion-proof box 2 under the action of the explosion shock wave, close the air inlet 201 and the air outlet 202, and prevent the flame and shock wave from propagating outward.

[0031] See also Figure 3The driving assembly includes a motor 701, a toothed belt 702 and a roller 703. The bottom of the dust removal box 3 is arranged in a circular shape and rotatably connected to four rollers 703. Two toothed belts 702 are spaced around the outer circumference of all rollers 703. The rollers 703 have teeth matching the toothed belts 702. The filter screen 6 is fixedly connected between the two toothed belts 702. A motor 701 is installed on the top of the dust removal box 3. The top of one of the rollers 703 is connected to the output shaft of the motor 701, and the tops of the other rollers 703 have gaps with the top of the dust removal box 3. When the motor 701 drives the roller 703 connected thereto to rotate, since the roller 703 is provided with teeth matching the toothed belts 702, when the roller 703 rotates, it will drive the two toothed belts 702 meshing therewith to move synchronously. At the same time, under the transmission action of the toothed belts 702, the other three rollers 703 are driven to rotate synchronously, and the filter screen 6 continues to move along the circular path with the movement of the toothed belts 702.

[0032] See also Figure 4 and Figure 5 The cleaning component includes a roller brush 801, and a group of roller brushes 801 are rotatably connected to the left and right sides of the top of the dust removal box 3, and each group of roller brushes 801 are symmetrically distributed on the inner and outer sides of the filter screen 6. A gear 802 is fixedly connected to the upper part of the roller brush 801, and a Y-shaped rod 803 is slidably connected to the left and right sides of the top of the dust removal box 3. The Y-shaped rod 803 has a U-shaped section, and both sides of the U-shaped section of the Y-shaped rod 803 have teeth matching the gear 802. When the Y-shaped rod 803 performs a linear motion, it can drive the roller brush 801 to rotate, and the bristles of the roller brush 801 are in close contact with the surface of the filter screen 6, effectively sweeping off the dust and debris accumulated on the filter screen 6.

[0033] See also Figure 4 and Figure 5 One end of the Y-shaped rod 803 is fixedly connected to a sliding frame 901, and the tops of the two rollers 703 that are not directly connected to the motor 701 are fixedly connected to a fixed rod 902. The fixed rod 902 is away from the axis of the roller 703, and the top of the fixed rod 902 is located in the sliding frame 901. When the roller 703 rotates, the fixed rod 902 rotates with the roller 703 and moves in the sliding frame 901. Specifically, the top of the fixed rod 902 slides relatively in the sliding frame 901 and rotates relatively at the same time, thereby converting the rotational motion of the roller 703 into the linear motion of the Y-shaped rod 803.

[0034] See also Figure 7 and Figure 8 A pawl 13 is fixedly connected to the front and rear sides of the baffle 11, and a fixed block is provided on the explosion-proof box 2 next to each pawl 13. The fixed block is connected to a ratchet bar 14 through two elastic members 141. The teeth of the ratchet bar 14 match the pawl 13. When the ratchet bar 14 is engaged with the pawl 13, it can limit the movement of the baffle 11 in the direction away from the explosion-proof box 2.

[0035] See also Figure 2 , Figure 4 and Figure 6 , also includes a water tank 15, a pump 16 and a nozzle 17. The water tank 15 is fixedly connected to the middle part of the dust removal box 3. The top of the water tank 15 is connected to the bottom of the condensation box 4. The water tank 15 is used to receive the water condensed in the condensation box 4. A pump 16 is installed on the side of the water tank 15. The pump 16 is electrically connected to the controller. The water inlet end of the pump 16 is connected to the water tank 15 through a water pipe. There are two nozzles 17. One end of the two nozzles 17 is respectively located above the two groups of roller brushes 801, and the other ends of the two nozzles 17 are connected to the water outlet end of the pump 16 after merging. When the controller starts the pump 16, the pump 16 pumps the water in the water tank 15 to the nozzle 17, and the nozzle 17 sprays water from the top of the roller brush 801 downward, providing additional cleaning assistance for the roller brush 801.

[0036] See also Figure 6 A liquid level sensor 18 is provided in the water tank 15. The liquid level sensor 18 is electrically connected to the controller. The liquid level sensor 18 is used to monitor the water level in the water tank 15. The liquid level sensor 18 monitors the liquid level in the water tank 15 in real time. When the liquid level reaches a preset full water threshold, the liquid level sensor 18 sends a signal to the controller. After receiving the signal, the controller starts the pump 16.

[0037] See also Figure 1 and Figure 2 A collecting box 19 is fixedly connected to the bottom of the dust removal box 3, and a sewage outlet 301 which is connected to the collecting box 19 is opened at the bottom of the dust removal box 3. During the cleaning process of the filter screen 6, the dust and debris swept by the roller brush 801, and the sewage after being sprayed by the nozzle 17 are all collected in the collecting box 19 through the sewage outlet 301, which is convenient for subsequent unified treatment.

[0038] The working principle of the present invention is as follows: when in use, the hot air inside the explosion-proof box 2 is discharged to the outside through the air outlet 202 through the operation of the fan 10. This action generates a negative pressure effect inside the explosion-proof box 2, prompting the external air to enter the dust removal box 3 through the ventilation channel 5. The air entering the dust removal box 3 is first filtered through the filter screen 6 to remove dust and debris therein. Then, the cleaned air continues to flow into the condensation box 4. The condensation device in the condensation box 4 condenses the water vapor in the air into liquid water. These condensed waters drip downward into the water storage tank 15 by gravity and are collected centrally. The condensed and dried air enters the explosion-proof box 2 through the air inlet 201. Since the condensation process not only removes the moisture in the air, but also further reduces the temperature of the air, the air with a lower temperature naturally absorbs the heat generated during the operation of the power distribution device during the upward flow, and is discharged to the outside through the fan 10, forming a complete air circulation system. This process is repeated, which can more efficiently dissipate the heat of the power distribution device and avoid performance degradation or failure caused by overheating.

[0039] In order to maintain the continuous and efficient filtering ability of the filter 6, the motor 701 drives the roller 703 connected thereto to rotate. Since the roller 703 is provided with teeth matching the toothed belt 702, when the roller 703 rotates, it will drive the two toothed belts 702 meshing therewith to move synchronously. At the same time, the toothed belt 702 drives the other three rollers 703 to rotate synchronously. The filter 6 moves continuously along the circular path with the movement of the toothed belt 702. During the movement, the filter 6 will pass through the ventilation channel 5 and the area where the roller brush 801 is located in sequence. When the filter 6 moves to contact the roller brush 801 after passing through the ventilation channel 5, the fixing rod 902 is connected thereto. The roller 703 rotates while moving in the slide frame 901, thereby converting the rotational motion of the roller 703 into the linear motion of the Y-shaped rod 803. Since the Y-shaped rod 803 has teeth that match the gear 802 of the roller brush 801, the linear movement of the Y-shaped rod 803 drives the gear 802 on the roller brush 801 to rotate, thereby rotating the roller brush 801. The bristles of the roller brush 801 are in close contact with the surface of the filter 6, effectively sweeping off the dust and debris accumulated on the filter 6. The cleaned filter 6 moves into the ventilation channel 5 again to contact the external air, and continues to filter dust and debris. This cycle is repeated to ensure the continuous smooth flow and filtering capacity of the filter 6.

[0040] The liquid level in the water tank 15 is monitored in real time by the liquid level sensor 18. When the liquid level reaches the preset full water threshold, the liquid level sensor 18 sends a signal to the controller. After receiving the signal, the controller starts the pump 16 to pump the water in the water tank 15 to the nozzle 17 through the pump 16. The nozzle 17 sprays water downward from the top of the roller brush 801, providing additional cleaning assistance for the roller brush 801, effectively flushing away the stubborn dirt on the filter 6, and preventing dust from flying during the cleaning process. At the same time, the dust and debris swept off by the roller brush 801, and the sewage after being sprayed by the nozzle 17 are all collected in the collection box 19 through the sewage outlet 301, which is convenient for subsequent unified treatment.

[0041] When an explosion unexpectedly occurs inside the explosion-proof box 2, the baffle 11 quickly moves close to the explosion-proof box 2 under the action of the explosion shock wave, closing the air inlet 201 and the air outlet 202, effectively preventing the spread of flames and shock waves, and enhancing the explosion-proof performance of the distribution device. During this process, the elastic member 12 will be compressed to absorb part of the impact force, and the inclined surface of the pawl 13 will contact the inclined surface of the ratchet bar 14 and slide along the tooth shape of the ratchet bar 14. Since the design of the pawl 13 has a one-way locking function (that is, it can only slide and lock in one direction, and an external force is required to unlock in the opposite direction), the pawl 13 will push the ratchet bar 14 to slide on the explosion-proof box 2 during the sliding process, and the elastic member 141 provides a reset force for the ratchet bar 14, and finally the baffle When the baffle 11 stops moving, the pawl 13 is firmly meshed with a tooth on the ratchet bar 14. At this time, the interaction between the pawl 13 and the ratchet bar 14 limits the movement of the baffle 11 in the direction away from the explosion-proof box body 2, thereby ensuring the reliability of the closed state of the air inlet 201 and the air outlet 202. When it is necessary to release the baffle 11 from closing the air inlet 201 and the air outlet 202, it is only necessary to slide the ratchet bar 14 to the side away from the pawl 13 to disengage the pawl 13 from the ratchet bar 14. At this time, the baffle 11 will move away from the explosion-proof box body 2 under the elastic action of the elastic member 12, and reopen the air inlet 201 and the air outlet 202. At the same time, the elastic member 141 will continue to provide a reset force for the ratchet bar 14.

[0042] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flameproof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device for use in mines, comprising a base frame (1) and an explosion-proof box (2), wherein the explosion-proof box (2) is fixedly connected to the top of the base frame (1), characterized in that: A dust removal box (3) is fixedly connected to the base frame (1), a condensation box (4) is arranged on the top of the dust removal box (3), at least one ventilation channel (5) is connected between the dust removal box (3) and the condensation box (4), a filter screen (6) arranged along a zigzag path is arranged in the dust removal box (3), the filter screen (6) slides through the ventilation channel (5), the filter screen (6) is used to filter out dust and debris in the air passing through the ventilation channel (5), the dust removal box (3) is also provided with a driving component for driving the filter screen (6) to move along the zigzag path, and a cleaning component for cleaning the filter screen (6), the bottom of the explosion-proof box (2) is provided with at least one filter screen (6) connected to the condensation box (4) and arranged along a zigzag path. An air inlet (201) is connected to the top of the condensation box (4), an air outlet (202) is opened on the top of the explosion-proof box (2), a fan (10) is installed in the air outlet (202), a plurality of baffles (11) are slidably connected in the explosion-proof box (2), the positions of the plurality of baffles (11) respectively correspond to the air inlet (201) and the air outlet (202), an elastic member (12) is connected between the explosion-proof box (2) and the baffle (11), a ventilation gap is left between the baffle (11) and the explosion-proof box (2), and when all the baffles (11) move close to the explosion-proof box (2), the air inlet (201) and the air outlet (202) can be closed.

2. A mine flameproof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 1, characterized in that: The driving assembly comprises a motor (701), a toothed belt (702) and a roller (703); four rollers (703) are arranged in a circular shape and are rotatably connected in the dust removal box (3); two toothed belts (702) are wound around the outer circumference of all the rollers (703) at intervals; the rollers (703) have teeth matching the toothed belts (702); the filter (6) is fixedly connected between the two toothed belts (702); the motor (701) is installed on the top of the dust removal box (3); and the output shaft of the motor (701) is connected to one of the rollers (703).

3. A mine flameproof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 2, characterized in that: The cleaning assembly comprises a roller brush (801), a group of roller brushes (801) are rotatably connected to the left and right sides of the top of the dust removal box (3), each group of roller brushes (801) are symmetrically distributed on the inner and outer sides of the filter screen (6), a gear (802) is fixedly connected to the upper part of the roller brush (801), and a Y-shaped rod (803) is slidably connected to the left and right sides of the top of the dust removal box (3), the Y-shaped rod (803) has a U-shaped section, and both sides of the U-shaped section of the Y-shaped rod (803) have teeth matching the gear (802), and when the Y-shaped rod (803) performs a linear motion, it can drive the roller brush (801) to rotate to clean the filter screen (6).

4. A mine flameproof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 3, characterized in that: One end of the Y-shaped rod (803) is fixedly connected to a sliding frame (901); the tops of the two rollers (703) that are not directly connected to the motor (701) are fixedly connected to fixed rods (902); the fixed rods (902) are away from the axis of the rollers (703); the tops of the fixed rods (902) are located in the sliding frame (901); when the rollers (703) rotate, the fixed rods (902) rotate with the rollers (703) and move in the sliding frame (901), thereby converting the rotational motion of the rollers (703) into the linear motion of the Y-shaped rods (803).

5. A mine-use explosion-proof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 4, characterized in that: At least one ratchet (13) is fixedly connected to the baffle (11); a ratchet bar (14) is slidably connected to the explosion-proof housing (2) beside the ratchet bar (13); a second elastic member (141) is connected between the explosion-proof housing (2) and the ratchet bar (14); teeth of the ratchet bar (14) match the ratchet bar (13); when the ratchet bar (14) is meshed with the ratchet bar (13), the movement of the baffle (11) in a direction away from the explosion-proof housing (2) can be restricted.

6. A mine-use explosion-proof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 5, characterized in that: It also includes a water tank (15), a pump (16) and a nozzle (17), wherein the water tank (15) is fixedly connected to the middle part of the dust removal box (3), the top of the water tank (15) is connected to the bottom of the condensation box (4), the water tank (15) is used to receive the water condensed in the condensation box (4), the pump (16) is installed beside the water tank (15), the water inlet end of the pump (16) is connected to the water tank (15) through a water pipe, and there are two nozzles (17), one end of the two nozzles (17) is respectively located above the two groups of roller brushes (801), and the other ends of the two nozzles (17) are connected to the water outlet end of the pump (16) after merging.

7. A mine-use explosion-proof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 6, characterized in that: A liquid level sensor (18) is provided in the water storage tank (15), and the liquid level sensor (18) is used to monitor the water level in the water storage tank (15) so as to drain the water in a timely manner.

8. A mine-use explosion-proof and intrinsically safe permanent magnetic high-voltage vacuum power distribution device according to claim 7, characterized in that: The bottom of the dust removal box (3) is fixedly connected to a collecting box (19), and the bottom of the dust removal box (3) is provided with a sewage outlet (301) which is in communication with the collecting box (19).

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