A safe explosion-proof power supply cabinet

Abstract

The present invention relates to the technical field of power supply cabinets, and specifically provides a safe explosion-proof power supply cabinet, comprising an installation cabinet and an explosion-proof cabinet located above the installation cabinet, the explosion-proof cabinet being equipped with an air inlet and an air outlet, a smoke sensor being installed on the inner wall of the explosion-proof cabinet, a flow guide tube being fixed inside the explosion-proof cabinet, a plurality of nozzles being installed on the flow guide tube, the flow guide tube being connected to and communicated with a dry powder tank, the dry powder tank being connected to a high-pressure tank via a valve, the dry powder tank and the high-pressure tank being fixed to the outer wall of the explosion-proof cabinet, and the smoke sensor being communicatively connected to the valve via a controller. The present invention is configured to push the dry powder in the dry powder tank into the flow guide tube through the gas release in the high-pressure tank, and then spray it out from the nozzle, so that the insulating dry powder can quickly and efficiently extinguish the flame, avoid secondary disasters, reduce harm to personnel and equipment, improve the overall safety of the mine, and protect the lives of personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply cabinets, and in particular provides a safety explosion-proof power supply cabinet. Background Art

[0002] Mining environments place high demands on power supply cabinets, primarily because explosive gases and dust are often present. An explosion in a power supply cabinet could ignite these gases and dust, leading to an explosion. Therefore, positive-pressure explosion-proof power supply cabinets are commonly used in mines. These cabinets maintain a positive pressure inside the cabinet, discharging flammable gases to prevent them from accumulating to the point of explosion. They also prevent external explosive gases and dust from entering the cabinet, thereby minimizing potential explosion risks.

[0003] However, if a fire occurs inside the power cabinet, the power cabinet of the existing technology cannot extinguish the fire source. Although the connection points between the power cabinet and the outside world are equipped with flame retardant covers, if the fire inside the power cabinet is large, the high temperature generated by the flames can easily ignite the surrounding explosive gases and dust, causing a larger-scale explosion and endangering the safety of personnel in the mine. Summary of the Invention

[0004] In view of the above-mentioned defects, the present invention provides a safe explosion-proof power supply cabinet, the purpose of which is to solve the problem in the prior art that the fire source cannot be quickly extinguished after a fire occurs in the power supply cabinet.

[0005] In order to achieve the above-mentioned object, the present invention provides a safe explosion-proof power supply cabinet, which includes an installation cabinet and an explosion-proof cabinet located above the installation cabinet, the explosion-proof cabinet is equipped with an air inlet and an air outlet, a flame retardant cover is set at the outlet position of the air outlet, the flame retardant cover is fixed to the side of the explosion-proof cabinet, a smoke sensor is installed on the inner wall of the explosion-proof cabinet, a guide pipe is fixed inside the explosion-proof cabinet, a plurality of nozzles are installed on the guide pipe, the guide pipe is communicated with and connected to a dry powder tank, the dry powder tank and the high-pressure tank are connected through a valve, the dry powder tank and the high-pressure tank are fixed to the outer wall of the explosion-proof cabinet, and the smoke sensor is communicatively connected to the valve through a controller;

[0006] A partition is provided in the explosion-proof cabinet, and the partition is elastically connected to the top of the explosion-proof cabinet. A first through hole is provided on the partition, and a flame-retardant net is fixed in the first through hole. One end of a punching bag is fixed on the partition, and the punching bag is coaxially arranged with the first through hole. The other end of the punching bag can be movably arranged in the guide tube, and the guide tube is fixed on the top of the explosion-proof cabinet. A first rotating shaft is rotatably installed in the punching bag, and the first rotating shaft is fixed to the baffle. One end of a first connecting rod is fixed to the end of the first rotating shaft, and the other end of the first connecting rod is hinged to the second connecting rod, and the second connecting rod is hinged to the top of the explosion-proof cabinet.

[0007] Preferably, a hook is fixed at the bottom of the partition, and the hook can be overlapped with a pin shaft, and the pin shaft is fixed on a slide bar, and a first lever is fixed at the bottom of the slide bar, and the first lever can be overlapped with a knife arm, one end of the knife arm is hinged to the first contact piece, and the other end of the knife arm can be overlapped with the second contact piece, and the first contact piece and the second contact piece are both fixed to the inner wall of the explosion-proof cabinet through an insulating cross arm.

[0008] Preferably, the slide bar is slidably configured in the guide rail, the guide rail is fixed to the inner wall of the explosion-proof cabinet, a plurality of locking teeth are fixed on the slide bar, a first groove is provided on the side wall of the guide rail, a first spring is configured in the first groove, one end of the first spring is fixed to the inner wall of the first groove, the other end of the first spring is fixed to the stop block, the stop block is slidably configured in the first groove, and the locking teeth can abut against the stop block.

[0009] Preferably, one end of a guide rod is fixed on the partition, the guide rod is movably arranged in the guide cylinder, the guide cylinder is fixedly connected to the explosion-proof cabinet, a second spring is arranged in the guide rod and the guide cylinder, one end of the second spring is fixedly connected to the explosion-proof cabinet, the other end of the second spring is fixed on the partition, a convex ring is fixed on the outer wall of the guide rod, the convex ring can abut against a limit ring, and the limit ring is fixed on the inner wall of the guide cylinder.

[0010] Preferably, a second rotating shaft is rotatably installed in the explosion-proof cabinet, the second rotating shaft is fixedly connected to the equipment plate, electrical components are installed on the equipment plate, a handle is fixed on the equipment plate, a second lever is fixed on the equipment plate, and the second lever can overlap with the knife arm.

[0011] Preferably, a first support block is fixed to the inner wall of the explosion-proof cabinet, a limiting groove is provided on the side wall of the explosion-proof cabinet, a limiting bolt is slidably installed on the equipment plate, the limiting bolt can slide with the limiting groove, and a second support block is fixed to the bottom wall of the explosion-proof cabinet.

[0012] Preferably, two mounting plates are fixed on the first contact piece, a third rotating shaft is rotatably mounted on the mounting plate, the third rotating shaft is fixedly connected to the knife arm, one end of a damping spring is fixed on the mounting plate, and the other end of the damping spring is fixedly connected to the knife arm.

[0013] Preferably, a first dust cover is provided at the outlet of the guide tube, and the first dust cover is fixed to the top surface of the explosion-proof cabinet.

[0014] The object of the present invention is to provide a safe explosion-proof power supply cabinet, which has the following beneficial effects:

[0015] ① The present invention pushes the dry powder in the dry powder tank toward the guide pipe by releasing the gas in the high-pressure tank, and then sprays it out from the nozzle. The insulating dry powder can quickly and efficiently extinguish the flame, prevent the spread of fire from causing secondary disasters such as gas and coal dust explosions, reduce harm to personnel and equipment, improve the overall safety of the mine, and protect the lives of personnel.

[0016] ② The present invention arranges the partition to move upward to drive the baffle to rotate, so that the first through hole, the air outlet tube and the guide tube can form a gas flow channel, preventing the excessive air pressure in the explosion-proof cabinet from causing deformation, rupture and other damage to the cabinet after the dry powder is introduced, thereby ensuring the structural integrity of the explosion-proof cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a safety explosion-proof power cabinet;

[0018] Figure 2 It is a structural diagram of the explosion-proof cabinet of the present invention;

[0019] Figure 3 It is a schematic diagram of the position of the partition of the present invention;

[0020] Figure 4 This is a schematic diagram of the coordination between the guide tube and the air outlet tube of the present invention;

[0021] Figure 5 Schematic diagram of the cooperation between the slide bar and the guide rail of the present invention;

[0022] Figure 6 yes Figure 5 A local enlarged view of point A;

[0023] Figure 7 This is a schematic diagram of the cooperation between the locking teeth and the stopper of the present invention;

[0024] Figure 8 This is a schematic diagram of the cooperation between the guide rod and the guide cylinder of the present invention;

[0025] Figure 9 It is a dynamic change diagram of the explosion-proof cabinet of the present invention;

[0026] Figure 10 yes Figure 9 A partial enlarged view of point B.

[0027] In the figure: 1-installation cabinet; 2-explosion-proof cabinet; 3-air inlet; 4-air outlet; 5-flame retardant cover; 10-guide pipe; 11-sprinkler; 12-dry powder tank; 13-high-pressure tank; 21-partition; 22-first through hole; 23-flame retardant net; 24-air outlet; 25-guide pipe; 26-first rotating shaft; 27-baffle; 28-first connecting rod; 29-second connecting rod; 30-hook; 31-pin; 32-slide; 33-first lever; 34-knife arm; 35-first contact piece; 36-second contact piece Plate; 37-insulating crossarm; 40-guide rail; 41-locking tooth; 42-first groove; 43-first spring; 44-stopper; 50-guide rod; 51-guide cylinder; 52-second spring; 53-convex ring; 54-limiting ring; 60-second rotating shaft; 61-equipment plate; 62-handle; 63-second shift lever; 70-first support block; 71-limiting groove; 72-limiting bolt; 73-second support block; 81-mounting plate; 82-third rotating shaft; 83-damping spring; 84-first dust cover. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] like Figure 1-10 As shown, the present invention provides a safe explosion-proof power supply cabinet, including an installation cabinet 1, in which electrical components without explosion risk are mainly installed. An explosion-proof cabinet 2 is arranged above the installation cabinet 1, in which electrical components with higher explosion risk are installed. The explosion-proof cabinet 2 is equipped with an air inlet 3 and an air outlet 4. The air inlet 3 continuously introduces protective gas into the explosion-proof cabinet 2. The air inlet 3 and the air outlet 4 are arranged symmetrically. If the density of the protective gas is greater than the density of the air, the horizontal height of the air inlet 3 is higher than the air outlet 4. If the density of the protective gas is less than the density of the air, the horizontal height of the air inlet 3 is lower than the air outlet 4. At the same time, the airtightness of the explosion-proof cabinet 2 itself should be ensured when the cabinet door is closed to form an effective air circulation. A flame retardant cover 5 is provided at the outlet of the air outlet 4. The flame retardant cover 5 is fixed to the side of the explosion-proof cabinet 2. The flame retardant cover 5 is preferably made of ceramic fiber material to ensure airflow and block flames and particulate matter.

[0030] A smoke sensor is mounted on the inner wall of the explosion-proof cabinet 2 to monitor the smoke concentration inside the cabinet in real time. Explosion-proof smoke sensors are preferred, and signals are transmitted to the controller via an explosion-proof junction box to ensure stable sensor operation. A flow conduit 10 is fixed inside the explosion-proof cabinet 2. Specifically, the flow conduit 10 is secured to the inner wall of the explosion-proof cabinet 2 using insulating brackets. Multiple nozzles 11 are mounted on the flow conduit 10, each equipped with a one-way valve to prevent high-pressure gas from entering the flow conduit through the nozzles 11. The flow conduit 10 is connected to a dry powder tank 12, which is filled with ultra-fine insulating dry powder. The dry powder tank 12 is connected to a high-pressure tank 13 via a valve, which uses an explosion-proof solenoid valve. The dry powder tank 12 and the high-pressure tank 13 are fixed to the outer wall of the explosion-proof cabinet 2. The smoke sensor communicates with the valve via the controller, with a response time of less than 50 milliseconds.

[0031] Insulating dry powder mainly extinguishes fire through chemical inhibition. After the insulating dry powder is released, the chemical components in it can quickly react with the free radicals in the combustion reaction, interrupting the chain reaction of combustion, thereby achieving the purpose of extinguishing the fire.

[0032] After the smoke sensor detects that the smoke concentration in the explosion-proof cabinet 2 exceeds the standard, it opens the valve, and the gas in the high-pressure tank 13 pushes the dry powder in the dry powder tank 12 toward the guide tube 10, and then it is sprayed out from the nozzle 11. After being sprayed out, the pressure in the explosion-proof cabinet 2 will rise suddenly. It is impossible to balance the air pressure in a short time by exhausting only through the air outlet 4. Therefore, a partition 21 is configured in the explosion-proof cabinet 2. The partition 21 divides the internal space of the explosion-proof cabinet 2 into two parts. The partition 21 is elastically connected to the top of the explosion-proof cabinet 2. A first through hole 22 is provided on the partition 21. A flame-retardant net 23 is fixed in the first through hole 22. One end of an air outlet 24 is fixed on the partition 21. The air outlet 24 is coaxially arranged with the first through hole 22. The other end of the air outlet 24 can be movably configured in the guide tube 25. The guide tube 25 is connected to the outside of the explosion-proof cabinet 2. That is to say, the first through hole 22, the air outlet tube 24 and the guide tube 25 can form a gas circulation channel, the guide tube 25 is fixed on the top of the explosion-proof cabinet 2, and the first rotating shaft 26 is rotatably installed in the air outlet tube 24. The first rotating shaft 26 is fixed to the baffle 27, and one end of the first connecting rod 28 is fixed to the end of the first rotating shaft 26. The other end of the first connecting rod 28 is hinged to one end of the second connecting rod 29, and the other end of the second connecting rod 29 is hinged to the top of the explosion-proof cabinet 2.

[0033] The dry powder in the dry powder tank 12 is pushed toward the flow guide pipe 10 by releasing the gas in the high-pressure tank 13, and then sprayed out from the nozzle 11. The insulating dry powder can quickly and efficiently extinguish the flames, prevent the spread of fire and cause secondary disasters such as gas and coal dust explosions, reduce harm to personnel and equipment, improve the overall safety of the mine, and protect the lives of personnel.

[0034] Normally, baffle 27 closes the passageway inside the vent 24. When the pressure inside the high-pressure tank 13 suddenly rises, the air pressure pushes baffle 21 upward, thereby driving the vent 24 upward. The vent 24 is inserted into the guide tube 25, forming a gas flow channel. Under the transmission action of the first connecting rod 28 and the second connecting rod 29, the first rotating shaft 26 rotates, thereby driving baffle 27 to rotate. The baffle 27 reduces the obstruction of the passageway inside the vent 24, expands the fluid channel, and allows gas to be discharged along the vent 24 and guide tube 25. The flame-retardant mesh 23 is preferably made of ceramic fiber flame-retardant mesh, which not only ensures airflow but also blocks flames and particulate matter.

[0035] If the gas release rate from the high-pressure tank 13 is too low, the sprayed dry powder will not be able to act on the fire source in time. If the gas release rate from the high-pressure tank 13 is too high, it will easily exceed the pressure limit of the explosion-proof cabinet 2. Therefore, the partition 21 is set to move upward to drive the baffle 27 to rotate, forming a new airflow channel. This prevents the excessive air pressure inside the explosion-proof cabinet 2 from causing deformation, rupture, and other damage to the cabinet after the dry powder is introduced, thereby ensuring the structural integrity of the explosion-proof cabinet 2. At the same time, it is necessary to preset the pressure inside the high-pressure tank 13 and the valve opening in advance to balance the gas release rate and the pressure growth rate inside the explosion-proof cabinet 2. The relationship between the opening and pressure can be determined through experiments or simulations, so that the gas release amount during the powder spraying stage can ensure the dry powder spraying efficiency and lift the partition 21 without exceeding the pressure limit of the explosion-proof cabinet 2.

[0036] As a further explanation of this embodiment, a hook 30 is fixed to the bottom of the partition 21. The hook 30 can overlap with a pin 31, which is fixed to a slide 32. A first lever 33 is fixed to the bottom of the slide 32. The first lever 33 is made of an insulating material and can overlap with a blade arm 34. Specifically, an extension rod is fixed to the upper portion of the blade arm 34 near the rotating end. The first lever 33 can overlap with the extension rod. One end of the blade arm 34 is hinged to a first contact 35, which is connected to the wires entering the cabinet. The other end of the blade arm 34 can overlap with a second contact 36, which is connected to the electrical components in the cabinet via the wires. The first and second contacts 35, 36 are both fixed to the inner wall of the explosion-proof cabinet 2 via an insulating cross arm 37. With this arrangement, the rotation of the blade arm 34 can control the opening and closing of the circuit. When the partition 21 moves upward, the slide bar 32 is driven upward by the hook 30, thereby driving the first lever 33 to move upward. When the first lever 33 moves upward, it overlaps with the extension rod of the knife arm 34, thereby driving the knife arm 34 to rotate around its own hinge point with the first contact piece 35. The knife arm 34 rotates until it no longer overlaps with the second contact piece 36, and the circuit is disconnected.

[0037] As a further explanation of this embodiment, to ensure the stability of the upward movement of the partition 21 under pressure, this solution adds a guide mechanism. Specifically, one end of a guide rod 50 is fixed to the partition 21. The guide rod 50 is movably disposed within a guide cylinder 51, which is fixed to the bottom surface of the top of the explosion-proof cabinet 2. A second spring 52 is disposed within the guide rod 50 and the guide cylinder 51. One end of the second spring 52 is fixedly connected to the explosion-proof cabinet 2, and the other end of the second spring 52 is fixed to the partition 21. A protruding ring 53 is fixed to the outer wall of the guide rod 50, which is capable of abutting against a retaining ring 54, which is fixed to the inner wall of the guide cylinder 51.

[0038] When the explosion-proof cabinet 2 is working normally, the convex ring 53 can abut against the limit ring 54 to prevent the partition 21 from falling downward due to gravity. When the nozzle 11 sprays dry powder, the pressure in the high-pressure tank 13 rises suddenly, pushing the partition 21 upward and compressing the second spring 52. The second spring 52 can provide a certain buffer for this pressure, and the guide rod 50 moves upward in the guide cylinder 51 to ensure the stability of the movement of the partition 21.

[0039] As a further explanation of this embodiment, the slide bar 32 is slidably configured in the guide rail 40, the guide rail 40 is fixed to the inner wall of the explosion-proof cabinet 2, and a plurality of locking teeth 41 are fixed on the slide bar 32. The side wall of the guide rail 40 is provided with a first groove 42, and a first spring 43 is configured in the first groove 42. One end of the first spring 43 is fixed to the inner wall of the first groove 42, and the other end of the first spring 43 is fixed to the stop block 44. The stop block 44 is slidably configured in the first groove 42, and the locking tooth 41 can abut against the stop block 44. Specifically, the top surface of the locking tooth 41 is an arc surface, and the bottom surface of the stop block 44 is an inclined surface. When the slide bar 32 moves upward, the arc surface of the locking tooth 41 overlaps with the inclined surface of the stop block 44, causing the stop block 44 to move into the first groove 42 and compress the first spring 43. When the slide bar 32 no longer moves upward, the horizontal bottom surface of the locking tooth 41 abuts against the horizontal top surface of the stop block 44, preventing the slide bar 32 from sliding down due to gravity.

[0040] Preferably, in order to prevent dry powder from entering the air inlet fan 3 due to a sudden increase in pressure in the explosion-proof cabinet 2, a one-way valve is installed at the connection position between the air inlet fan 3 and the explosion-proof cabinet 2, allowing only the air inlet fan 3 to pass gas into the explosion-proof cabinet 2.

[0041] The reason for limiting the slide bar 32 is that after the first lever 33 drives the knife arm 34 to disengage from the second contact piece 36, the circuit is disconnected, and the ultrafine dry powder sprayed by the subsequent nozzle 11 extinguishes the flame in the explosion-proof cabinet 2. After the flame is extinguished, no more dry powder is introduced, and the partition 21 descends. However, it is still necessary to ensure that the circuit is in the disconnected state, so a block 44 is provided to cooperate with the locking tooth 41 to prevent the slide bar 32 from descending. The first lever 33 can still support the knife arm 34 to ensure the disconnected state of the circuit.

[0042] Because the installation of the slide bar 32 on the inner wall of the explosion-proof cabinet 2 takes up some space, and to prevent the nozzle 11 from being damaged or bumped by the nozzle 11 when the staff inspect the electrical components inside the explosion-proof cabinet 2, this solution chooses to install the electrical components on a separate device plate 61. When maintenance is required, the device plate 61 can be rotated to a horizontal position. Specifically, a second rotating shaft 60 is rotatably installed in the explosion-proof cabinet 2. The second rotating shaft 60 is fixedly connected to the device plate 61. The electrical components are installed on the device plate 61. The device plate 61 is fixed with a handle 62. When maintenance is required, the staff pulls the handle to rotate the device plate 61 to a horizontal position for maintenance.

[0043] Because the circuit needs to be disconnected during maintenance, a second lever 63 can be fixed to the device plate 61. This lever 63 can also engage with the blade arm 34. Specifically, the second lever 63 is mounted near the bottom of the device plate 61. As the device plate 61 rotates, the second lever 63 gradually engages with the extension rod of the blade arm 34, thereby driving the blade arm 34 to rotate about its hinge point with the first contact 35. The blade arm 34 rotates until it no longer engages with the second contact 36, disconnecting the circuit and ensuring maintenance safety in a power-off environment.

[0044] When the equipment plate 61 is rotated to a horizontal state, in order to support the equipment plate 61, two first support blocks 70 are fixed on the inner wall of the explosion-proof cabinet 2, and the two first support blocks 70 are arranged opposite to each other; when the equipment plate 61 is in a vertical state, the equipment plate 61 also needs to be supported, so a second support block 73 is fixed to the bottom wall of the explosion-proof cabinet 2, and a limiting groove 71 is provided on the side wall of the explosion-proof cabinet 2. A limiting bolt 72 is slidably installed on the equipment plate 61, and the limiting bolt 72 can be inserted into the limiting groove 71 and slidably cooperates with the limiting groove 71.

[0045] As a further explanation of this embodiment, two mounting plates 81 are fixed to the first contact piece 35. A third rotating shaft 82 is rotatably mounted on each mounting plate 81. The third rotating shaft 82 is fixedly connected to the knife arm 34. One end of a damping spring 83 is fixed to the mounting plate 81, and the other end of the damping spring 83 is fixedly connected to the knife arm 34. When the knife arm 34 is moved upward by the first deflector 33 or the second deflector 63, the damping spring 83 is compressed, storing elastic potential energy. When the first deflector 33 or the second deflector 63 no longer contacts the knife arm 34, the damping spring 83 returns to its original position, causing the knife arm 34 to re-engage with the second contact piece 36.

[0046] In order to prevent dust from falling into the explosion-proof cabinet 2 , a first dust cover 84 is provided at the outlet of the guide tube 25 , and the first dust cover 84 is fixed to the top surface of the explosion-proof cabinet 2 .

[0047] The present invention is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned concept without creative work are all within the scope of protection of the present invention.

Claims

1. A safety explosion-proof power supply cabinet, comprising an installation cabinet and an explosion-proof cabinet located above the installation cabinet, wherein the explosion-proof cabinet is provided with an air inlet and an air outlet, and a flame retardant cover is provided at the outlet of the air outlet, and the flame retardant cover is fixed to the side of the explosion-proof cabinet, characterized in that: A smoke sensor is installed on the inner wall of the explosion-proof cabinet, a guide pipe is fixed inside the explosion-proof cabinet, a plurality of nozzles are installed on the guide pipe, the guide pipe is communicated with and connected to the dry powder tank, the dry powder tank and the high-pressure tank are connected through a valve, the dry powder tank and the high-pressure tank are fixed to the outer wall of the explosion-proof cabinet, and the smoke sensor is communicatively connected to the valve through a controller; The explosion-proof cabinet is provided with a partition, the partition is elastically connected to the top of the explosion-proof cabinet, a first through hole is provided on the partition, a flame-retardant net is fixed in the first through hole, one end of a punching bag is fixed on the partition, the punching bag is coaxially arranged with the first through hole, the other end of the punching bag can be movably arranged in a guide tube, the guide tube is fixed to the top of the explosion-proof cabinet, a first rotating shaft is rotatably installed in the punching bag, the first rotating shaft is fixed to the baffle, one end of a first connecting rod is fixed to the end of the first rotating shaft, the other end of the first connecting rod is hinged to the second connecting rod, and the second connecting rod is hinged to the top of the explosion-proof cabinet; A hook is fixed to the bottom of the partition, and the hook can be overlapped with a pin shaft, and the pin shaft is fixed to a slide bar, and a first lever is fixed to the bottom of the slide bar, and the first lever can be overlapped with a knife arm, one end of the knife arm is hinged to a first contact piece, and the other end of the knife arm can be overlapped with a second contact piece, and the first contact piece and the second contact piece are both fixed to the inner wall of the explosion-proof cabinet through an insulating cross arm; The slide bar is slidably configured in the guide rail, the guide rail is fixed to the inner wall of the explosion-proof cabinet, a plurality of locking teeth are fixed on the slide bar, a first groove is provided on the side wall of the guide rail, a first spring is configured in the first groove, one end of the first spring is fixed to the inner wall of the first groove, and the other end of the first spring is fixed to the stop block, the stop block is slidably configured in the first groove, and the locking teeth can abut against the stop block.

2. The safety explosion-proof power supply cabinet according to claim 1, characterized in that: One end of a guide rod is fixed on the partition, and the guide rod is movably arranged in the guide cylinder, and the guide cylinder is fixedly connected to the explosion-proof cabinet. A second spring is arranged in the guide rod and the guide cylinder, and one end of the second spring is fixedly connected to the explosion-proof cabinet, and the other end of the second spring is fixed on the partition. A convex ring is fixed on the outer wall of the guide rod, and the convex ring can abut against a limit ring, and the limit ring is fixed on the inner wall of the guide cylinder.

3. The safety explosion-proof power supply cabinet according to claim 2, characterized in that: A second rotating shaft is rotatably installed in the explosion-proof cabinet, the second rotating shaft is fixedly connected to the equipment plate, electrical components are installed on the equipment plate, a handle is fixed on the equipment plate, a second shifting rod is fixed on the equipment plate, and the second shifting rod can overlap with the knife arm.

4. The safety explosion-proof power supply cabinet according to claim 3, characterized in that: A first support block is fixed on the inner wall of the explosion-proof cabinet, a limiting groove is provided on the side wall of the explosion-proof cabinet, a limiting bolt is slidably installed on the equipment plate, the limiting bolt can slide in conjunction with the limiting groove, and a second support block is fixed on the bottom wall of the explosion-proof cabinet.

5. The safety explosion-proof power supply cabinet according to claim 4, characterized in that: Two mounting plates are fixed on the first contact piece, a third rotating shaft is rotatably mounted on the mounting plate, the third rotating shaft is fixedly connected to the knife arm, one end of a damping spring is fixed on the mounting plate, and the other end of the damping spring is fixedly connected to the knife arm.

6. The safety explosion-proof power supply cabinet according to claim 1, characterized in that: A first dust cover is provided at the outlet of the guide tube, and the first dust cover is fixed on the top surface of the explosion-proof cabinet.

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