Mining safety type solid insulation high-voltage explosion-proof device

Abstract

The invention relates to the technical field of mining high-voltage explosion prevention, in particular to a mining safety type solid insulation high-voltage explosion-proof device which comprises a high-voltage cabinet and an electrified body, epoxy resin plates are fixedly connected to the front face of the high-voltage cabinet, a plurality of epoxy resin plates form an insulation cavity, the electrified body is located in the insulation cavity, and a partition plate is fixedly installed on the inner wall of the high-voltage cabinet. A reaction box is fixedly mounted on the left side of the partition plate, and a liquid box, a reaction mechanism, a collection mechanism and a turbulent flow mechanism are arranged in the reaction box. The mining safety type solid insulation high-voltage explosion-proof device is simple in mechanism, convenient to install, small and exquisite in cabinet body, compact in space and provided with an independent insulating chamber of an electrified body, the safety performance is improved, maintenance is convenient when a fault occurs, recovery can be achieved by replacing a circuit breaker, maintenance-free can be really achieved, the top plate is disassembled during disassembly, and the explosion-proof effect is achieved. The electrified body can be detached along the guide rail by pulling the electrified body upwards, maintenance is convenient when a fault occurs, recovery can be achieved by replacing a circuit breaker, and the maintenance-free effect can be really achieved.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage explosion-proof for mining, in particular to a safe solid-insulated high-voltage explosion-proof device for mining. Background Art

[0002] At present, the charged parts such as circuit breaker contacts and grounding switches of high-voltage explosion-proof cabinets for mines are exposed inside the cabinet. Once a fault occurs and causes an explosion, at the very least, all the components in the equipment cavity will be blown up. At worst, it will not only affect the entire underground power supply system, but may even cause casualties. The mine explosion-proof and intrinsically safe solid-insulated high-voltage explosion-proof device uses solid-insulated circuit breakers in high-voltage explosion-proof switch cabinets, thereby achieving the goals of high safety, modularization, maintenance-free and easy maintenance.

[0003] In view of the problem that the charged parts in the mining explosion-proof devices on the market are directly exposed to the air, which poses a safety hazard, we have developed a method of using solid insulated circuit breakers in explosion-proof cabinets. The charged parts in the isolation and grounding positions are cast with epoxy resin in an insulating cavity, thereby improving the safety of the explosion-proof cabinet. When a fault occurs and an explosion occurs, it is only in the insulating cavity and will not involve other components. The circuit breaker can be replaced to resume operation, which is convenient and quick without affecting the entire power supply system. Summary of the invention

[0004] The purpose of the present invention is to provide a safe solid-insulated high-voltage explosion-proof device for use in mines, which is suitable for power supply in coal mines with explosive gases such as methane and coal dust, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a mine-use safety solid insulation high-voltage explosion-proof device, comprising a high-voltage cabinet and a charged body installed inside the high-voltage cabinet, the front of the high-voltage cabinet is fixedly connected with an epoxy resin board, a plurality of the epoxy resin boards constitute an insulating cavity, the charged body is located inside the insulating cavity, a partition is fixedly installed on the inner wall of the high-voltage cabinet, a reaction box is fixedly installed on the left side of the partition, a flame retardant device is arranged inside the reaction box, and the flame retardant device comprises a liquid box, a reaction mechanism, a collection mechanism and a spoiler mechanism;

[0006] The reaction mechanism, the collection mechanism and the flow disturbance mechanism are arranged in sequence at the top, the middle and the bottom of the liquid box from top to bottom.

[0007] Preferably, the reaction mechanism includes a heat pipe, a ventilation pipe, a retaining frame and an anti-overflow plate, the heat pipe is fixedly installed on the top of the inner wall of the reaction box, the ventilation pipe is fixedly connected to the back of the reaction box, the retaining frame is fixedly installed on the left and right sides of the inner wall of the liquid box, and the anti-overflow plate is clamped to the inside of the retaining frame.

[0008] Preferably, a connecting hole is opened on the upper surface of the anti-overflow plate, the inner diameter of the connecting hole is the same as the diameter of the heat pipe, the bottom end of the heat pipe passes through the liquid box and extends to the interior of the liquid box, and the ventilation pipe passes through the reaction box and the partition and extends to the interior of the high-voltage cabinet.

[0009] Preferably, the collecting mechanism includes an anti-corrosion plate, a one-way valve, a slope and a collecting box, the anti-corrosion plate is fixedly connected to the left and right sides of the inner wall of the liquid box, the one-way valve is installed inside the anti-corrosion plate, the slope is fixedly installed on the inner bottom of the liquid box, and the collecting box is connected to the bottom of the liquid box.

[0010] Preferably, the one-way valve only allows liquid to flow from the top to the bottom of the anti-corrosion plate, the slope is high on both sides and low in the middle, and a through groove connected to the collection box is provided at the lowest point of the slope.

[0011] Preferably, the spoiler mechanism includes a motor, a screw rod, a screw rod nut, a through groove, a connecting plate, a magnetic plate, a slide rail, a magnetic slider and a movable rod. The motor is fixedly installed on the left side of the bottom inner wall of the reaction box, the screw rod is connected to the output end of the motor, the screw rod nut is connected to the outer surface of the screw rod, the through groove is opened at the bottom back of the reaction box, the connecting plate is fixedly connected to the back of the screw rod nut, the magnetic plate is fixedly connected to the top of the connecting plate, the slide rail is fixedly installed on the back of the inner wall of the liquid box, the magnetic slider is slidably connected to the surface of the slide rail, and the movable rod is fixedly connected to the bottom of the magnetic slider.

[0012] Preferably, push plates are fixedly connected to both sides of the outer surface of the movable rod, one end of the screw rod is connected to the output shaft of the motor, and the other end is connected to the inner wall of the reaction box through a bearing and a bearing seat, the magnetic plate and the magnetic slider are attracted to each other on the side close to each other, and the bottom end of the movable rod is slidably connected to the upper surface of the anti-corrosion plate

[0013] Preferably, a memory spring is fixedly connected to the top of the inner wall of the reaction box, and calcium carbonate particles are fixedly connected to the bottom of the memory spring. Through hole one and through hole two are provided on the outer surface of the heat pipe near the bottom. The height of through hole one is higher than that of through hole two. Both through hole one and through hole two pass through the heat pipe. Paraffin strip one is provided inside through hole one, and paraffin strip two is provided inside through hole two.

[0014] Preferably, the partition is made of epoxy resin, and the partition and the epoxy resin board together constitute an insulating cavity. A mounting frame is fixedly connected to the right side of the high-voltage cabinet.

[0015] Preferably, the top of the high-voltage cabinet is connected to a top plate by bolts, and an installation mechanism is provided on the right side of the inner wall of the high-voltage cabinet, the installation mechanism includes a guide rail, a slider, a connecting frame and a load-bearing frame, the guide rail is fixedly installed on the right side of the inner wall of the high-voltage cabinet, the slider is slidably connected to the outer surface of the guide rail, the connecting frame is fixedly connected to the left side of the slider, and the load-bearing frame is fixedly connected to the bottom of the connecting frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This mine-use safe solid-insulated high-voltage explosion-proof device has a simple structure, is easy to install, has a small cabinet, compact space, and an independent insulating chamber for the charged body. It has improved safety performance and is easy to repair when a fault occurs. It can be restored by replacing a circuit breaker, and can truly be maintenance-free.

[0018] 2. This mining safety solid insulation high-voltage explosion-proof device, after an explosion occurs in the mine, the temperature inside the high-voltage cabinet and the reaction box will rise, and the temperature inside the heat pipe will also rise, thereby melting the paraffin strips 1 and 2. After the temperature rises, the memory spring deforms and elongates, thereby pushing the calcium carbonate particles down into the liquid storage tank, and then reacting with the dilute hydrochloric acid solution. The dilute hydrochloric acid reacts with the calcium carbonate particles to produce carbon dioxide gas. The produced carbon dioxide gas will enter the cabinet through the air vents. The carbon dioxide gas can prevent the fire from spreading, reduce the oxygen concentration to prevent continued combustion, and thus play an auxiliary fire prevention effect, preventing the combustion from causing damage to the charged body.

[0019] 3. When installing the live body of the mine-used safe solid-insulated high-voltage explosion-proof device, first place the live body on the connecting frame and the load-bearing frame, so that the connecting frame drives the slider to slide on the surface of the guide rail. When disassembling, remove the top plate and pull the live body upward to remove it along the guide rail. In case of failure, maintenance is convenient and it can be restored by replacing a circuit breaker, which can truly achieve maintenance-free.

[0020] 4. In the mining safety solid insulation high-voltage explosion-proof device, the magnetic plate drives the magnetic slider to move through attraction during the movement, and the magnetic slider moves inside the slide rail, thereby driving the movable rod to move inside the reaction box. During the movement, the push plate stirs the dilute hydrochloric acid solution, thereby making the reaction between the dilute hydrochloric acid and the calcium carbonate particles more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of the high-voltage cabinet of the present invention;

[0023] Figure 2 It is a schematic diagram of the side structure of the high-voltage cabinet of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the high-voltage cabinet of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation mechanism structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the overall structure of the reaction box of the present invention;

[0027] Figure 6 It is a schematic diagram of the internal structure of the reaction box of the present invention;

[0028] Figure 7 It is a schematic diagram of the side structure of the partition of the present invention;

[0029] Figure 8 for Figure 6 A schematic diagram of the structure enlargement in the middle;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the liquid tank of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the spoiler mechanism of the present invention;

[0032] Fig.11 It is a schematic diagram of the bottom structure of the heat pipe of the present invention;

[0033] Fig.12 It is a cross-sectional view of the heat conduction pipe of the present invention.

[0034] In the figure: 1. high-voltage cabinet; 101. guide rail; 102. slider; 103. connecting frame; 104. load-bearing frame; 2. epoxy resin board; 3. top plate; 4. mounting frame; 5. reaction box; 501. liquid box; 502. heat pipe; 5021. memory spring; 5022. calcium carbonate particles; 5023. through hole 1; 5024. through hole 2; 5025. paraffin strip 1; 5026. paraffin strip 2; 503. ventilation Tube; 504, retaining frame; 505, anti-overflow plate; 506, connecting hole; 507, anti-corrosion plate; 508, one-way valve; 509, ramp; 510, collecting box; 511, motor; 512, screw; 513, screw nut; 514, through groove; 515, connecting plate; 516, magnetic plate; 517, slide rail; 518, magnetic slider; 519, movable rod; 520, push plate; 6, partition; 7, charged body. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1-Figure 12 , the present invention provides a technical solution:

[0038] Embodiment 1: A mining safety solid-insulated high-voltage explosion-proof device comprises a high-voltage cabinet 1 and a charged body 7 installed inside the high-voltage cabinet 1. An epoxy resin board 2 is fixedly connected to the front of the high-voltage cabinet 1. A plurality of epoxy resin boards 2 constitute an insulating cavity. The charged body 7 is located inside the insulating cavity. A partition 6 is fixedly installed on the inner wall of the high-voltage cabinet 1. A reaction box 5 is fixedly installed on the left side of the partition 6. A flame retardant device is arranged inside the reaction box 5. The flame retardant device comprises a liquid tank 501 and a reaction mechanism. The reaction mechanism is arranged at the inner top of the liquid tank 501.

[0039] The reaction mechanism includes a heat pipe 502, a vent pipe 503, a holder 504 and an anti-overflow plate 505. The heat pipe 502 is fixedly installed on the top of the inner wall of the reaction box 5. The vent pipe 503 is fixedly connected to the back of the reaction box 5. The holder 504 is fixedly installed on the left and right sides of the inner wall of the liquid box 501. The anti-overflow plate 505 is clamped inside the holder 504. A connecting hole 506 is opened on the upper surface of the anti-overflow plate 505. The inner diameter of the connecting hole 506 is the same as the diameter of the heat pipe 502. The bottom end of the heat pipe 502 passes through the liquid box 501 and extends to the inside of the liquid box 501. The vent pipe 503 passes through the reaction box 5 and the partition 6 and extends to the inside of the high-voltage cabinet 1. The inside of the liquid box 501 is filled with a dilute hydrochloric acid solution, and the liquid level of the dilute hydrochloric acid solution is lower than the height of the anti-overflow plate 505.

[0040] A memory spring 5021 is fixedly connected to the top of the inner wall of the reaction box 5, and calcium carbonate particles 5022 are fixedly connected to the bottom of the memory spring 5021. The memory spring 5021 is located inside the heat pipe 502. A through hole 1 5023 and a through hole 2 5024 are provided on the outer surface of the heat pipe 502 near the bottom. The height of the through hole 1 5023 is higher than that of the through hole 2 5024. Both the through hole 1 5023 and the through hole 2 5024 pass through the heat pipe 502. A paraffin strip 1 5025 is provided inside the through hole 1 5023, and a paraffin strip 2 5026 is provided inside the through hole 2 5024. The memory spring 5021 is made of nickel-titanium memory alloy. The length of the memory spring 5021 in the contracted state is less than the length of the heat pipe 502. When the temperature on it reaches the deformation temperature, it will deform and elongate. The deformation temperature of the memory spring 5021 is 80 degrees Celsius. After the temperature drops below 45 degrees Celsius, it shrinks to its original length. After the temperature drops, the memory spring 5021 will gradually return to its original length.

[0041] After an explosion occurs in the mine, the temperature inside the high-voltage cabinet 1 and the reaction box 5 will increase, and the temperature inside the heat pipe 502 will also increase, thereby melting the paraffin strip 1 5025 and the paraffin strip 2 5026. After the temperature rises, the memory spring 5021 will deform and elongate, thereby pushing the calcium carbonate particles 5022 down into the liquid storage tank 501, and then reacting with the dilute hydrochloric acid solution. The dilute hydrochloric acid reacts with the calcium carbonate particles to produce carbon dioxide gas, and the produced carbon dioxide gas will enter the interior of the cabinet 1 through the air vent 805. The carbon dioxide gas can prevent the fire from spreading, reduce the oxygen concentration to prevent continued combustion, and thus play an auxiliary fire prevention role, preventing the combustion from causing damage to the charged body. After the temperature in the mine drops, the memory spring 5021 will gradually return to its original length, thereby pulling the calcium carbonate particles 5022 out of the liquid storage tank 501 so that they do not come into contact with the dilute hydrochloric acid and react.

[0042] The material of the partition 6 is epoxy resin, and the partition 6 and the epoxy resin board 2 together form an insulating cavity. The mounting frame 4 is fixedly connected to the right side of the high-voltage cabinet 1, and the charged body 7 is located inside the insulating cavity, which has an independent insulating chamber, and the safety performance is improved. The charged bodies in the isolation and grounding positions are cast in an insulating cavity with epoxy resin. When a fault occurs, the explosion is only in the insulating cavity, and other components will not be involved.

[0043] The top of the high-voltage cabinet 1 is connected to the top plate 3 by bolts, and an installation mechanism is arranged on the right side of the inner wall of the high-voltage cabinet 1, and the installation mechanism includes a guide rail 101, a slider 102, a connecting frame 103 and a load-bearing frame 104. The guide rail 101 is fixedly installed on the right side of the inner wall of the high-voltage cabinet 1, the slider 102 is slidably connected to the outer surface of the guide rail 101, the connecting frame 103 is fixedly connected to the left side of the slider 102, and the load-bearing frame 104 is fixedly connected to the bottom of the connecting frame 103. The slider 102 is provided with two groups, the upper group of sliders 102 is connected to the charged body 7, the lower group of sliders is connected to the connecting frame 103, and the connecting frame 103 is connected to the charged body 7.

[0044] When installing the charged body 7, first place the charged body 7 on the connecting frame 103 and the load-bearing frame 104, so that the connecting frame 103 drives the slider 102 to slide on the surface of the guide rail 101. When disassembling, remove the top plate 3, pull the charged body 7 upward to remove it along the guide rail 101. When a fault occurs, it is easy to repair and can be restored by replacing a circuit breaker, which can truly achieve maintenance-free.

[0045] Embodiment 2: Based on Embodiment 1, a collecting mechanism is provided in the middle part of the interior of the liquid tank 501, and the collecting mechanism includes an anti-corrosion plate 507, a one-way valve 508, a slope 509 and a collecting box 510. The anti-corrosion plate 507 is fixedly connected to the left and right sides of the inner wall of the liquid tank 501, the one-way valve 508 is installed inside the anti-corrosion plate 507, the slope 509 is fixedly installed on the inner bottom of the liquid tank 501, and the collecting box 510 is connected to the bottom of the liquid tank 501, and the collecting box 510 can be disassembled.

[0046] The one-way valve 508 only allows liquid to flow from the top to the bottom of the anti-corrosion plate 507. The one-way valve 508 is an electrically controlled valve made of high-temperature resistant material. The slope 509 is high on both sides and low in the middle. A through groove connected to the collection box 510 is opened at the lowest point of the slope 509.

[0047] After a period of reaction, the one-way valve 508 is opened to allow the dilute hydrochloric acid liquid to flow into the inner bottom of 501 through the one-way valve 508, and flow into the interior of the collection box 510 along the slope 509, so that the dilute hydrochloric acid liquid is collected. After the collection box 510 is disassembled, it is easy to handle.

[0048] Embodiment 3: Based on Embodiment 1 and Embodiment 2, a spoiler mechanism is provided at the inner bottom of the liquid box 501 .

[0049] The spoiler mechanism includes a motor 511, a screw rod 512, a screw nut 513, a through groove 514, a connecting plate 515, a magnetic plate 516, a slide rail 517, a magnetic slider 518 and a movable rod 519. The motor 511 is fixedly installed on the left side of the bottom inner wall of the reaction box 5, the screw rod 512 is connected to the output end of the motor 511, the screw nut 513 is connected to the outer surface of the screw rod 512, the through groove 514 is opened at the bottom back of the reaction box 5, the connecting plate 515 is fixedly connected to the back of the screw nut 513, the magnetic plate 516 is fixedly connected to the top of the connecting plate 515, the slide rail 517 is fixedly installed on the back of the inner wall of the liquid box 501, the magnetic slider 518 is slidably connected to the surface of the slide rail 517, and the movable rod 519 is fixedly connected to the bottom of the magnetic slider 518.

[0050] Push plates 520 are fixedly connected to both sides of the outer surface of the movable rod 519, one end of the screw rod 512 is connected to the output shaft of the motor 511, and the other end is connected to the inner wall of the reaction box 5 through a bearing and a bearing seat (not shown in the figure), the magnetic plate 516 and the magnetic slider 518 are attracted to each other on the close side, the bottom end of the movable rod 519 is slidably connected to the upper surface of the anti-corrosion plate 507, and the motor 511 is electrically connected to an external power supply.

[0051] During the reaction, by starting the motor 511, the output shaft of the motor 511 drives the screw rod 512 to rotate, and the screw rod 512 drives the screw nut 513 on its surface to move on its surface. During the movement, the screw nut 513 drives the connecting plate 515 to move inside the through groove 514. During the movement, the connecting plate 515 drives the magnetic plate 516 to move. During the movement, the magnetic plate 516 drives the magnetic slider 518 to move through the attraction. The magnetic slider 518 moves inside the slide rail 517, and then drives the movable rod 519 to move inside the reaction box 501. During the movement, the dilute hydrochloric acid solution is stirred by the push plate 520, so that the reaction between the dilute hydrochloric acid and the calcium carbonate particles is more sufficient.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe solid-insulated high-voltage explosion-proof device for use in mines, comprising a high-voltage cabinet (1) and a charged body (7) installed inside the high-voltage cabinet (1), characterized in that: The front of the high-voltage cabinet (1) is fixedly connected to an epoxy resin board (2), a plurality of the epoxy resin boards (2) form an insulating cavity, the charged body (7) is located inside the insulating cavity, a partition (6) is fixedly installed on the inner wall of the high-voltage cabinet (1), a reaction box (5) is fixedly installed on the left side of the partition (6), and a flame retardant device is arranged inside the reaction box (5), and the flame retardant device includes a liquid box (501), a reaction mechanism, a collection mechanism and a spoiler mechanism; The reaction mechanism, the collection mechanism and the flow disturbance mechanism are arranged in sequence from top to bottom at the top, the middle and the bottom of the liquid box (501).

2. A mining safety solid insulation high voltage explosion-proof device according to claim 1, characterized in that: The reaction mechanism comprises a heat conducting pipe (502), a ventilation pipe (503), a retaining frame (504) and an anti-overflow plate (505); the heat conducting pipe (502) is fixedly mounted on the top of the inner wall of the reaction box (5); the ventilation pipe (503) is fixedly connected to the back of the reaction box (5); the retaining frame (504) is fixedly mounted on the left and right sides of the inner wall of the liquid box (501); and the anti-overflow plate (505) is clamped inside the retaining frame (504).

3. A mining safety solid insulation high voltage explosion-proof device according to claim 2, characterized in that: A connecting hole (506) is provided on the upper surface of the anti-overflow plate (505), the inner diameter of the connecting hole (506) being the same as the diameter of the heat-conducting pipe (502), the bottom end of the heat-conducting pipe (502) passing through the liquid box (501) and extending to the interior of the liquid box (501), and the ventilation pipe (503) passing through the reaction box (5) and the partition (6) and extending to the interior of the high-voltage cabinet (1).

4. A mine-use safety solid insulation high voltage explosion-proof device according to claim 1, characterized in that: The collecting mechanism comprises an anti-corrosion plate (507), a one-way valve (508), a slope (509) and a collecting box (510); the anti-corrosion plate (507) is fixedly connected to the left and right sides of the inner wall of the liquid box (501); the one-way valve (508) is installed inside the anti-corrosion plate (507); the slope (509) is fixedly installed on the inner bottom of the liquid box (501); and the collecting box (510) is connected to the bottom of the liquid box (501).

5. A mining safety solid insulation high voltage explosion-proof device according to claim 4, characterized in that: The one-way valve (508) only allows liquid to flow from the top to the bottom of the anti-corrosion plate (507). The slope (509) is high on both sides and low in the middle. A through groove connected to the collection box (510) is provided at the lowest point of the slope (509).

6. A mining safety solid insulation high voltage explosion-proof device according to claim 1, characterized in that: The spoiler mechanism comprises a motor (511), a screw rod (512), a screw rod nut (513), a through groove (514), a connecting plate (515), a magnetic plate (516), a slide rail (517), a magnetic slider (518) and a movable rod (519); the motor (511) is fixedly mounted on the left side of the bottom of the inner wall of the reaction box (5); the screw rod (512) is connected to the output end of the motor (511); the screw rod nut (513) is connected to the outer surface of the screw rod (512); The through groove (514) is opened at the bottom of the back side of the reaction box (5), the connecting plate (515) is fixedly connected to the back side of the screw nut (513), the magnetic attraction plate (516) is fixedly connected to the top of the connecting plate (515), the slide rail (517) is fixedly installed on the back side of the inner wall of the liquid box (501), the magnetic slider (518) is slidably connected to the surface of the slide rail (517), and the movable rod (519) is fixedly connected to the bottom of the magnetic slider (518).

7. A mining safety solid insulation high voltage explosion-proof device according to claim 6, characterized in that: Push plates (520) are fixedly connected to both sides of the outer surface of the movable rod (519), one end of the screw rod (512) is connected to the output shaft of the motor (511), and the other end is connected to the inner wall of the reaction box (5) through a bearing and a bearing seat, the magnetic plate (516) and the magnetic slider (518) are attracted to each other on the side close to each other, and the bottom end of the movable rod (519) is slidably connected to the upper surface of the anti-corrosion plate (507).

8. A mining safety solid insulation high voltage explosion-proof device according to claim 6, characterized in that: A memory spring (5021) is fixedly connected to the top of the inner wall of the reaction box (5), and calcium carbonate particles (5022) are fixedly connected to the bottom of the memory spring (5021). A through hole 1 (5023) and a through hole 2 (5024) are provided on the outer surface of the heat-conducting tube (502) near the bottom. The height of the through hole 1 (5023) is higher than that of the through hole 2 (5024). Both the through hole 1 (5023) and the through hole 2 (5024) pass through the heat-conducting tube (502). A paraffin strip 1 (5025) is provided inside the through hole 1 (5023), and a paraffin strip 2 (5026) is provided inside the through hole 2 (5024).

9. A mining safety solid insulation high voltage explosion-proof device according to claim 1, characterized in that: The partition (6) is made of epoxy resin, and the partition (6) and the epoxy resin plate (2) together form an insulating cavity. The right side of the high-voltage cabinet (1) is fixedly connected to a mounting frame (4).

10. A safe solid insulation high voltage explosion-proof device for mining use according to claim 1, characterized in that: The top of the high-voltage cabinet (1) is connected to a top plate (3) by bolts, and a mounting mechanism is provided on the right side of the inner wall of the high-voltage cabinet (1), the mounting mechanism comprising a guide rail (101), a slider (102), a connecting frame (103) and a load-bearing frame (104), the guide rail (101) is fixedly mounted on the right side of the inner wall of the high-voltage cabinet (1), the slider (102) is slidably connected to the outer surface of the guide rail (101), the connecting frame (103) is fixedly connected to the left side of the slider (102), and the load-bearing frame (104) is fixedly connected to the bottom of the connecting frame (103).

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