Fireproof distribution box based on arc elimination

Abstract

The invention discloses a fireproof distribution box based on arc elimination, comprising a cabinet with a sealed door hinged on the front, a heat dissipation fan installed on the top of the cabinet, and heat dissipation holes and vents used in conjunction with the heat dissipation fan are opened on the side of the cabinet; a plurality of arc extinguishing switch assemblies are installed inside the cabinet through a support frame, and the arc extinguishing switches are assembled to eliminate the arc generated when the circuit is overloaded, and the arc extinguishing switch assembly comprises a shell, two connecting rods are arranged inside the shell, and contact rods are rotatably installed at opposite ends of the two connecting rods through a conductive plate, and contacts are arranged at the ends of the contact rods, an arc extinguishing grid is installed inside the shell, a partition plate is fixed inside the cabinet, and a sealing block is threadedly installed on the partition plate, and the partition plate divides the bottom of the cabinet into a material storage cavity, and the heat dissipation fan is arranged to cool the inside of the cabinet, so as to avoid the problem of excessive temperature and reduce the probability of arc generation.

Description

Technical Field

[0001] The present invention relates to the technical field related to distribution boxes, and in particular to a fireproof distribution box based on arc elimination. Background Art

[0002] The distribution box is an electrical equipment with the characteristics of small size, easy installation, special technical performance, fixed position, unique configuration function, no site restrictions, wide application, stable and reliable operation, high space utilization, small footprint and environmental protection.

[0003] There are inductive elements in the circuit. When the circuit inside the distribution box is disconnected, the inductive elements will generate a voltage shock, thus forming an arc. When the power supply voltage is too high, it exceeds the voltage range that the distribution cabinet can withstand, which will cause an arc. There are pollutants such as oxides or dust inside the distribution cabinet. When the distribution cabinet is opened, these pollutants will cause an arc. If the distribution cabinet is opened too quickly, an arc will be generated. If the arc cannot be extinguished quickly, the arc will generate high heat and shock, which may cause insulation damage and mechanical damage to the electrical equipment, leading to equipment failure or affecting the life of the equipment, and seriously causing fire problems. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides a fireproof distribution box based on arc elimination.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The invention is based on a fireproof distribution box for eliminating arcs, comprising a cabinet body with a sealed door hinged on the front, a heat dissipation fan installed on the top of the cabinet body, and heat dissipation holes and vents used in conjunction with the heat dissipation fan on the side of the cabinet body;

[0007] A plurality of arc extinguishing switch assemblies are installed inside the cabinet through a support frame. The arc extinguishing switch is used to eliminate arcs generated when the circuit is overloaded. The arc extinguishing switch assembly includes a shell, two connecting rods are arranged inside the shell, and contact rods are rotatably installed at opposite ends of the two connecting rods through a conductive plate. Contact points are arranged at the ends of the contact rods, and arc extinguishing grids are installed inside the shell;

[0008] A partition plate is fixed inside the cabinet and a sealing block is threadedly installed on the partition plate. The partition plate divides the bottom of the cabinet into a material storage cavity, and the cabinet is provided with a fire extinguishing mechanism located in the material storage cavity for extinguishing an accidental fire inside the cabinet.

[0009] In the above solution, it should be noted that the heat dissipation fan is electrically connected to the external controller via an external power supply.

[0010] As a preferred technical solution of the present invention, an adjustment plate is slidably provided inside the shell, and two arc-shaped channels are provided on the adjustment plate in an eight-shaped shape. Limit rods are installed on the outer surfaces of the two touch rods, and the two limit rods are respectively slidably provided in the corresponding arc-shaped channels. A support plate is installed on the side of the adjustment plate and a magnetic plate is fixed on the support plate. An electromagnetic rod is installed inside the shell opposite to the magnetic plate, and a push plate is fixed on the side of the adjustment plate. A push channel for the push plate to move is provided on the shell, and a gear rod is slidably provided on the shell.

[0011] As a preferred technical solution of the present invention, two guide rods are fixed inside the outer shell, the outer surfaces of the two guide rods are slidably sleeved with sliding blocks and the two sliding blocks are fixed on the adjusting plate, the outer surfaces of the guide rods are sleeved with a return spring, and the two ends of the return spring are respectively fixedly mounted on the inner wall of the outer shell and the sliding block.

[0012] As a preferred technical solution of the present invention, an air storage box and an air intake box are fixed inside the shell, an air intake pipe is provided on one side of the air intake box and a control valve is installed on the air intake pipe, an air outlet pipe is fixed on the other side of the air intake pipe, the other end of the air outlet pipe is fixed on the air intake box, an air blowing pipe is provided on the side of the air intake box close to the contact, and a baffle plate is provided inside the air intake box opposite to the air outlet pipe, a guide rod is fixed on the side of the baffle plate, the guide rod is slidably arranged on the air intake box and the other end of the guide rod is fixed on the magnetic plate.

[0013] In the above solution, it should be noted that the control valve 1 is electrically connected to the external controller via an external power supply.

[0014] As a preferred technical solution of the present invention, the cooling mechanism includes an insulation frame fixed on the top of the cabinet, and a heat dissipation hose is installed at the position of the cabinet located on the insulation frame. The heat dissipation hose is coiled and installed in sequence on the back of the arc extinguishing switch assembly, and the end of the heat dissipation hose passes through the cabinet and extends to the outside of the cabinet.

[0015] As a preferred technical solution of the present invention, two insulation boards are rotatably installed in the insulation frame, a sliding rod is fixed on the side of the insulation board, a moving block is slidably provided on the outer surface of the sliding rod, a spring telescopic rod is fixed on the bottom of the moving block, and the end of the spring telescopic rod is fixed to the inner wall of the insulation frame.

[0016] As a preferred technical solution of the present invention, a filter is slidably provided inside the heat insulation frame above the heat insulation board.

[0017] As a preferred technical solution of the present invention, the fire extinguishing mechanism includes a nozzle fixed on the upper surface of the inner wall of the cabinet, a connecting pipe is installed inside the cabinet opposite to the material storage cavity, a control valve 2 is installed on the connecting pipe, and an air injection port is installed outside the cabinet opposite to the material storage cavity and a sealing gasket is provided at the air injection port, a control valve is installed on the connecting pipe and the top of the connecting pipe is connected to the nozzle.

[0018] In the above solution, it should be noted that the control valve 2 is electrically connected to the external controller via an external power supply.

[0019] As a preferred technical solution of the present invention, a smoke detector is provided inside the cabinet.

[0020] In the above solution, it should be noted that the smoke detector is electrically connected to the external controller via an external power supply.

[0021] As a preferred technical solution of the present invention, a rainproof bucket is installed at the heat dissipation hole of the cabinet, and a dustproof net is provided at the ventilation opening of the cabinet.

[0022] The beneficial effects of the present invention are:

[0023] 1. This fireproof distribution box based on arc elimination is provided with a connection rod, a conductive plate, a touch rod, a contact point, an arc extinguishing grid, a limit rod, an adjustment plate, a support plate, a magnetic plate and an electromagnetic rod. The electromagnetic rod is connected to the connection rod. When the current is too large, the magnetic force of the electromagnetic rod increases, and the repulsion pushes the magnetic plate and the support plate to move. The movement of the support plate drives the synchronous movement of the adjustment plate. When the adjustment plate moves, the limit rod slides inside the arc slide. The movement of the limit rod drives the touch rod to move synchronously, so that the touch rod rotates, and the two touch rods are quickly separated to achieve arc extinguishing. At the same time, the arc is divided into multiple short arcs by the arc extinguishing grid through the movement of the touch rod, so as to further achieve the arc extinguishing effect.

[0024] 2. This fireproof distribution box based on arc elimination is provided with a guide rod, a sliding block and a reset spring. The sliding block slides on the guide rod to play a limiting and guiding role for the adjustment plate. The reset spring can drive the adjustment plate to automatically return to its original position when the current decreases, and further enable the two touch rods to return to their reset positions.

[0025] 3. This fireproof distribution box based on arc elimination is equipped with a gas storage box, an air inlet box, an air outlet pipe, an air blow pipe, a baffle plate, a guide rod and a magnetic plate. While the magnetic plate drives the support plate to move, the baffle plate is driven to move through the guide rod. The baffle plate moves away from the air outlet pipe, so that the compressed gas inside the gas storage box is blown out from the air blow pipe through the air inlet pipe, and the arc is blown off by the effect of high-speed airflow, thereby achieving arc extinguishing.

[0026] 4. This type of fireproof distribution box based on arc elimination is equipped with a partition plate, a connecting pipe and a nozzle. The partition plate is used to divide the bottom of the cabinet into a storage cavity. The fire extinguishing material is put into the storage cavity by opening the sealing block box, and then compressed gas is injected through the gas injection port. When a fire occurs accidentally inside the cabinet, the second valve is opened by controlling the compressed gas to push the fire extinguishing material through the connecting pipe and spray out from the nozzle to achieve the effect of fire extinguishing and prevent the fire from spreading and causing fire problems.

[0027] 5. This type of fireproof distribution box based on arc elimination is equipped with a heat insulation frame and a heat dissipation hose. The heat insulation frame can be used to store and collect outdoor rainwater, and the rainwater is discharged through the heat dissipation hose, which can take away the heat generated by the inside of the cabinet and the arc extinguishing switch assembly, thereby achieving a cooling effect.

[0028] 6. This fireproof distribution box based on arc elimination uses heat insulation boards, sliding rods, spring telescopic rods and moving blocks to insulate the interior of the heat insulation frame to prevent direct sunlight from causing the temperature inside the heat insulation frame to rise. When rainwater accumulates, the weight drives the heat insulation board to rotate downward and open, and the rainwater can enter the heat insulation frame. After the rain stops, the elastic telescopic rod drives the heat insulation board to rotate upward and return to its original position through the moving block and the guide rod for heat insulation protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a structural schematic diagram of a fireproof distribution box based on arc elimination according to the present invention;

[0031] Figure 2 It is a partial structural schematic diagram of a fireproof distribution box based on arc elimination of the present invention;

[0032] Figure 3 It is a schematic cross-sectional structure diagram of a fireproof distribution box cabinet based on arc elimination of the present invention;

[0033] Figure 4 It is another cross-sectional structural schematic diagram of a fireproof distribution box cabinet based on arc elimination of the present invention;

[0034] Figure 5 It is a structural schematic diagram of an arc-extinguishing switch assembly for a fire-proof distribution box based on arc elimination according to the present invention;

[0035] Figure 6 It is a schematic cross-sectional structure diagram of the shell of the fireproof distribution box based on arc elimination of the present invention;

[0036] Figure 7 It is another cross-sectional structural schematic diagram of the shell of the fireproof distribution box based on arc elimination of the present invention;

[0037] Figure 8 It is another cross-sectional structural schematic diagram of the fireproof distribution box shell based on arc elimination of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of the fireproof distribution box adjustment plate based on arc elimination of the present invention;

[0039] Fig.10 It is a schematic diagram of the structure of the reset spring of the fireproof distribution box based on arc elimination of the present invention;

[0040] Fig.11 It is a schematic cross-sectional structure diagram of an air inlet box of a fireproof distribution box based on arc elimination of the present invention;

[0041] Fig.12 The invention is a schematic cross-sectional structure diagram of a fireproof distribution box insulation frame based on arc elimination.

[0042] In the figure: 1, cabinet; 2, cooling fan; 3, partition; 4, dust screen; 5, rain bucket; 6, arc extinguishing switch assembly; 601, shell; 602, connection rod; 603, conductive plate; 604, contact rod; 605, contact point; 606, limit rod; 607, adjustment plate; 608, reset spring; 609, guide rod; 610, sliding block; 611, support plate; 612, electromagnetic rod; 613, air intake box; 614 , gas storage box; 615, air outlet pipe; 616, magnetic plate; 617, baffle plate; 618, air blowing pipe; 619, arc extinguishing grid; 620, push plate; 621, gear lever; 7, cooling mechanism; 701, insulation frame; 702, filter screen; 703, heat dissipation hose; 704, slide bar; 705, moving block; 706, spring telescopic rod; 707, insulation board; 8, fire extinguishing mechanism; 801, connecting pipe; 802, nozzle. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0044] Example: Figure 1-3 As shown, the fireproof distribution box based on arc elimination of the present invention comprises a cabinet 1 with a sealed door hinged on the front, a heat dissipation fan 2 is installed on the top of the cabinet 1, and heat dissipation holes and vents used in conjunction with the heat dissipation fan 2 are opened on the side of the cabinet 1;

[0045] By providing the cooling fan 2, the interior of the cabinet 1 can be cooled and dissipated, thereby avoiding the problem of excessive temperature and reducing the probability of arc generation.

[0046] like Figure 3 , Figure 5-11As shown, a plurality of arc extinguishing switch assemblies 6 are installed inside the cabinet 1 through a support frame. The arc extinguishing switch is assembled to eliminate the arc generated when the circuit is overloaded. The arc extinguishing switch assembly 6 includes a housing 601. Two connecting rods 602 are arranged inside the housing 601. The opposite ends of the two connecting rods 602 are rotatably installed with a contact rod 604 through a conductive plate 603. The end of the contact rod 604 is provided with a contact point 605. An arc extinguishing grid 619 is installed inside the housing 601. An adjusting plate 607 is slidably arranged inside the housing 601. Eight adjusting plates 607 are provided on the adjusting plate 607. The shape of the letter " 604 " is provided with two arc-shaped channels, and the outer surfaces of the two touch rods 604 are both provided with limit rods 606, and the two limit rods 606 are respectively slidably arranged in the corresponding arc-shaped channels, and the side of the adjustment plate 607 is provided with a support plate 611 and a magnetic plate 616 is fixed on the support plate 611, and an electromagnetic rod 612 is installed in the housing at a position opposite to the magnetic plate 616, and a push plate 620 is fixed on the side of the adjustment plate 607, and a push channel for the push plate 620 to move is provided on the housing 601, and a gear lever 621 is slidably provided on the housing 601;

[0047] By arranging a connection rod 602, a conductive plate 603, a contact rod 604, a contact point 605, an arc extinguishing grid 619, a limit rod 606, an adjustment plate 607, a support plate 611, a magnetic plate 616 and an electromagnetic rod 612, the electromagnetic rod 612 is connected to the connection rod 602. When the current is too large, the magnetic force of the electromagnetic rod 612 increases, and the repulsion pushes the magnetic plate 616 and the support plate 611 to move. The movement of the support plate 611 drives the adjustment plate 607 to move synchronously. When the adjustment plate 607 moves, the limit rod 606 slides inside the arc slide. The movement of the limit rod 606 drives the contact rod 604 to move synchronously, so that the contact rod 604 rotates, and the two contact rods 604 are quickly separated to achieve arc extinguishing. At the same time, the arc is divided into multiple short arcs by the arc extinguishing grid 619 through the movement of the contact rod 604, so as to further achieve the arc extinguishing effect.

[0048] Among them, Figure 9-11 As shown, two guide rods 609 are fixed inside the housing 601, and the outer surfaces of the two guide rods 609 are slidably sleeved with sliding blocks 610, and the two sliding blocks 610 are fixed on the adjustment plate 607. The outer surfaces of the guide rods 609 are sleeved with a return spring 608, and the two ends of the return spring 608 are respectively fixedly mounted on the inner wall of the housing 601 and the sliding block 610;

[0049] By setting the guide rod 609, the sliding block 610 and the reset spring 608, the sliding block 610 slides on the guide rod 609 to play a limiting and guiding role for the adjustment plate 607. By utilizing the reset spring 608, when the current decreases, the adjustment plate 607 can be driven to automatically return to the original position, and further the two touch rods 604 can return to the reset position.

[0050] Among them, Figure 7 , Figure 8, Fig.10 and Fig.11 As shown, an air storage box 614 and an air inlet box 613 are fixed inside the housing 601, an air inlet pipe is provided on one side of the air inlet box 613 and a control valve 1 is installed on the air inlet pipe, an air outlet pipe 615 is fixed on the other side of the air inlet pipe, and the other end of the air outlet pipe 615 is fixed on the air inlet box 613, a blow pipe 618 is provided on one side of the air inlet box 613 close to the contact 605, and a baffle plate 617 is provided inside the air inlet box 613 at a position facing the air outlet pipe 615, a guide rod is fixed on the side of the baffle plate 617, the guide rod is slidably arranged on the air inlet box 613 and the other end of the guide rod is fixed on the magnetic plate 616;

[0051] By setting up an air storage box 614, an air inlet box 613, an air outlet pipe 615, an air blowing pipe 618, a baffle plate 617, a guide rod and a magnetic plate 616, the magnetic plate 616 drives the support plate 611 to move, while the baffle plate 617 is driven to move through the guide rod. The baffle plate 617 moves away from the position of the air outlet pipe 615, so that the compressed gas inside the air storage box 614 is blown out from the air blowing pipe 618 through the air inlet pipe, and the arc is blown off by the effect of high-speed airflow, thereby achieving arc extinguishing.

[0052] Among them, Figure 2-4 As shown, a partition plate 3 is fixed inside the cabinet 1 and a sealing block is installed on the partition plate 3 by threaded sealing. The partition plate 3 divides the bottom of the cabinet 1 into a material storage cavity, and the cabinet 1 is provided with a fire extinguishing mechanism 8 for extinguishing an accidental fire inside the cabinet 1 in the material storage cavity. The fire extinguishing mechanism 8 includes a nozzle 802 fixed on the upper surface of the inner wall of the cabinet 1, a connecting pipe 801 is installed inside the cabinet 1 facing the material storage cavity, a control valve 2 is installed on the connecting pipe 801, and an air injection port is installed outside the cabinet 1 facing the material storage cavity and a sealing gasket is provided at the air injection port, a control valve is installed on the connecting pipe 801, and the top of the connecting pipe 801 is connected to the nozzle 802;

[0053] By setting a partition plate 3, a connecting pipe 801 and a nozzle 802, the partition plate 3 is used to divide the bottom of the cabinet 1 into a material storage cavity, and the fire extinguishing material is put into the material storage cavity by opening the sealing block box, and then compressed gas is injected through the gas injection port. When a fire occurs accidentally inside the cabinet 1, the compressed gas is used to push the fire extinguishing material through the connecting pipe 801 and spray out from the nozzle 802 by controlling the valve 2 to achieve the effect of fire extinguishing and prevent the fire from spreading and causing fire problems.

[0054] Among them, a smoke detector is provided inside the cabinet 1;

[0055] By setting a smoke detector, when a fire occurs inside the cabinet 1, after being sensed by the smoke detector, the controller is used to open the control valve 2 so that the fire can be extinguished in time.

[0056] Among them, Figure 1and Figure 4 As shown, the cooling mechanism 7 includes a heat insulation frame 701 fixed on the top of the cabinet 1, and a heat dissipation hose 703 is installed at the position of the heat insulation frame 701 of the cabinet 1. The heat dissipation hose 703 is coiled and installed in sequence on the back of the arc extinguishing switch assembly 6, and the end of the heat dissipation hose 703 passes through the cabinet 1 and extends to the outside of the cabinet 1;

[0057] By providing the heat insulation frame 701 and the heat dissipation hose 703, the heat insulation frame 701 can be used to store and collect outdoor rainwater, and the rainwater can be discharged through the heat dissipation hose 703, which can carry away the heat generated by the inside of the cabinet 1 and the arc extinguishing switch assembly 6, thereby achieving a cooling effect.

[0058] Among them, Fig.12 As shown, two heat insulation plates 707 are rotatably installed in the heat insulation frame 701, a slide bar 704 is fixed to the side of the heat insulation plate 707, a moving block 705 is slidably provided on the outer surface of the slide bar 704, a spring telescopic rod 706 is fixed to the bottom of the moving block 705, and the end of the spring telescopic rod 706 is fixed to the inner wall of the heat insulation frame 701;

[0059] By arranging the heat insulation board 707, the slide bar 704, the spring telescopic rod 706 and the moving block 705, the heat insulation board 707 is used to insulate the interior to prevent the temperature inside the heat insulation frame 701 from increasing due to direct sunlight. When rainwater accumulates, the weight drives the heat insulation board 707 to rotate downward and open, and the rainwater can enter the interior of the heat insulation frame 701. After the rain stops, the elastic telescopic rod drives the heat insulation board 707 to rotate upward and return to its original position through the moving block 705 and the guide rod 609 to perform heat insulation protection.

[0060] Among them, Figure 1 As shown, a filter screen 702 is slidably provided inside the heat insulation frame 701 above the heat insulation board 707; by providing the filter screen 702, the filter screen 702 is utilized to isolate external garbage and debris, thereby preventing the heat insulation frame 701 and the heat dissipation hose 703 from clogging.

[0061] Among them, Figure 1 and Figure 2 As shown, a rainproof scoop 5 is installed at the heat dissipation hole position of the cabinet 1, and a dustproof net 4 is provided at the ventilation opening of the cabinet 1; by setting the rainproof scoop 5 and the dustproof net 4, the rainproof scoop 5 is used to prevent rainwater from entering the interior of the cabinet 1, and the dustproof net 4 is used to prevent external dust from entering the interior of the cabinet 1, so as to protect the internal components of the cabinet 1.

[0062] How it works

[0063] When the current is too large, the magnetic force of the electromagnetic rod 612 increases, and the repulsion pushes the magnetic plate 616 and the support plate 611 to move. The movement of the support plate 611 drives the adjustment plate 607 to move synchronously. When the adjustment plate 607 moves, the limit rod 606 slides inside the arc slide. The movement of the limit rod 606 drives the contact rod 604 to move synchronously, so that the contact rod 604 rotates, and the two contact rods 604 are quickly separated to achieve arc extinguishing. At the same time, the arc is divided into multiple short arcs by the arc extinguishing grid 619 through the movement of the contact rod 604, so as to further achieve the arc extinguishing effect. When the current decreases, the adjustment plate 607 is driven to automatically return to the original position, so that the two contact rods 604 can return to the reset position.

[0064] When the guide rod drives the baffle plate 617 to move, the baffle plate 617 moves away from the position of the gas outlet pipe 615, so that the compressed gas inside the gas storage box 614 is blown out from the gas blowing pipe 618 through the gas inlet pipe, and the arc is blown off by the effect of the high-speed airflow, thereby achieving arc extinguishing;

[0065] When a fire occurs inside the cabinet 1, after being sensed by the smoke sensor, the controller opens the control valve 2, and the compressed gas is used to push the fire extinguishing material through the connecting pipe 801 and spray out from the nozzle 802 to achieve the effect of fire extinguishing and prevent the fire from expanding and causing fire problems;

[0066] The heat-insulating frame 701 can store and collect outdoor rainwater, and use the rainwater to discharge through the heat dissipation hose 703, which can carry away the heat generated by the inside of the cabinet 1 and the arc-extinguishing switch assembly 6, thereby achieving a cooling effect.

[0067] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Fireproof distribution box based on arc elimination, characterized in that: It comprises a cabinet (1) with a sealed door hinged on the front, a heat dissipation fan (2) is installed on the top of the cabinet (1), and heat dissipation holes and ventilation holes used in conjunction with the heat dissipation fan (2) are opened on the side of the cabinet (1); A plurality of arc extinguishing switch assemblies (6) are installed inside the cabinet (1) via a support frame. The arc extinguishing switches are configured to extinguish arcs generated when a circuit is overloaded. The arc extinguishing switch assembly (6) comprises a housing (601). Two connection rods (602) are provided inside the housing (601). Contact rods (604) are rotatably installed at opposite ends of the two connection rods (602) via a conductive plate (603). Contact points (605) are provided at the ends of the contact rods (604). An arc extinguishing grid (619) is installed inside the housing (601). A partition plate (3) is fixed inside the cabinet (1), and a sealing block is threadedly installed on the partition plate (3), the partition plate (3) divides the bottom of the cabinet (1) into a material storage cavity, and the cabinet (1) is provided with a fire extinguishing mechanism (8) in the material storage cavity for extinguishing an accidental fire inside the cabinet (1). An adjustment plate (607) is slidably provided inside the housing (601), and two arc-shaped channels are provided on the adjustment plate (607) in an eight-shaped shape. Limit rods (606) are installed on the outer surfaces of the two contact rods (604), and the two limit rods (606) are respectively slidably provided in the corresponding arc-shaped channels. A support plate (611) is installed on the side of the adjustment plate (607), and a magnetic plate (616) is fixed on the support plate (611). An electromagnetic rod (612) is installed in the housing (601) at a position facing the magnetic plate (616). A push plate (620) is fixed on the side of the adjustment plate (607), and a push channel for the push plate (620) to move is provided on the housing (601), and a gear lever (621) is slidably provided on the housing (601). An air storage box (614) and an air intake box (613) are fixed inside the housing (601); an air intake pipe is provided on one side of the air intake box (613) and a control valve 1 is installed on the air intake pipe; an air outlet pipe (615) is fixed on the other side of the air intake pipe; the other end of the air outlet pipe (615) is fixed on the air intake box (613); an air blowing pipe (618) is provided on the side of the air intake box (613) close to the contact (605); a baffle plate (617) is provided inside the air intake box (613) at a position facing the air outlet pipe (615); a guide rod is fixed on the side of the baffle plate (617); the guide rod is slidably arranged on the air intake box (613) and the other end of the guide rod is fixed on the magnetic plate (616).

2. The arc-eliminating fireproof distribution box according to claim 1, characterized in that: Two guide rods (609) are fixed inside the housing (601), and sliding blocks (610) are slidably sleeved on the outer surfaces of the two guide rods (609), and the two sliding blocks (610) are fixed on the adjustment plate (607). A return spring (608) is sleeved on the outer surface of the guide rods (609), and two ends of the return spring (608) are respectively fixedly mounted on the inner wall of the housing (601) and the sliding block (610).

3. The fireproof distribution box based on arc elimination according to claim 1 is characterized in that: The cooling mechanism (7) comprises a heat-insulating frame (701) fixed on the top of the cabinet (1); a heat-dissipating hose (703) is installed on the cabinet (1) at a position on the heat-insulating frame (701); the heat-dissipating hose (703) is coiled and installed in sequence on the back of the arc-extinguishing switch assembly (6); and the end of the heat-dissipating hose (703) passes through the cabinet (1) and extends to the outside of the cabinet (1).

4. The arc-eliminating fireproof distribution box according to claim 3, characterized in that: Two heat insulation plates (707) are rotatably mounted inside the heat insulation frame (701); a sliding rod (704) is fixed to the side of the heat insulation plate (707); a moving block (705) is slidably provided on the outer surface of the sliding rod (704); a spring telescopic rod (706) is fixed to the bottom of the moving block (705); and the end of the spring telescopic rod (706) is fixed to the inner wall of the heat insulation frame (701).

5. The fireproof distribution box based on arc elimination according to claim 4 is characterized in that: A filter screen (702) is slidably provided inside the heat insulation frame (701) and above the heat insulation board (707).

6. The fireproof distribution box based on arc elimination according to claim 1, characterized in that: The fire extinguishing mechanism (8) comprises a nozzle (802) fixed to the upper surface of the inner wall of the cabinet (1); a connecting pipe (801) is installed inside the cabinet (1) at a position directly opposite to the material storage cavity; a second control valve is installed on the connecting pipe (801); an air injection port is installed outside the cabinet (1) at a position directly opposite to the material storage cavity; a sealing gasket is provided at the air injection port; a control valve is installed on the connecting pipe (801); and the top end of the connecting pipe (801) is connected to the nozzle (802).

7. The fireproof distribution box based on arc elimination according to claim 6, characterized in that: A smoke detector is provided inside the cabinet (1).

8. The fireproof distribution box based on arc elimination according to claim 1, characterized in that: The cabinet (1) is provided with a rainproof bucket (5) at the heat dissipation hole, and the cabinet (1) is provided with a dustproof net (4) at the ventilation opening.

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