Explosion-proof power distribution device suitable for cold environment

Abstract

The invention belongs to the technical field of power distribution equipment, and particularly relates to an explosion-proof power distribution device suitable for a cold environment, which comprises an outer shell, an inner shell is arranged in the outer shell, the inner shell is used for mounting power distribution parts, a first heat insulation frame is mounted on the inner bottom wall of the outer shell, and a second heat insulation frame is mounted on the inner top wall of the outer shell; according to the invention, multiple layers of thermal insulation cotton are arranged between the outer shell and the inner shell, including the top wall, the bottom wall and the thermal insulation cotton in contact with the inner shell, so that heat exchange between external cold air and power distribution parts in the inner shell is effectively blocked, and the proper temperature of the inner shell is maintained. Meanwhile, an air extracting pump is arranged, outside air is extracted and input into the inner shell to be heated when the temperature is low, hot air is exhausted through heat exchange between a coiled pipe of the air outlet part and cold air in the heat exchange box when the temperature is too high, accurate temperature control is achieved, it is ensured that the power distribution device stably operates in the cold environment, and performance reduction or damage of parts due to the temperature problem is avoided.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, and in particular to an explosion-proof power distribution device suitable for cold environments. Background Technology

[0002] In industrial production and various special operating scenarios, explosion-proof power distribution equipment, as the core equipment for power distribution and control, plays a crucial role in ensuring the safety and reliability of the entire system. Especially in cold environments, explosion-proof power distribution equipment faces numerous severe challenges, and existing explosion-proof power distribution equipment has significant shortcomings in addressing these challenges, specifically as follows: In cold environments, low external temperatures can easily penetrate the casing of explosion-proof power distribution equipment to the interior, causing a rapid drop in internal temperature. Traditional explosion-proof power distribution equipment lacks effective insulation and temperature regulation mechanisms, failing to effectively prevent heat exchange between the cold outside air and the internal power distribution components. This makes it difficult to maintain the internal temperature within the suitable operating range for the power distribution components. When the temperature is too low, the performance of the power distribution components will significantly deteriorate, such as changes in resistance and reduced insulation performance of insulating materials. In severe cases, it can even lead to component damage, affecting the normal operation of the entire power distribution equipment and posing significant safety hazards and economic losses to industrial production and operations.

[0003] Meanwhile, in cold environments, the internal temperature of explosion-proof power distribution equipment may become excessively high due to factors such as equipment operation or changes in the external environment. However, existing equipment lacks effective heat dissipation and temperature regulation methods, failing to dissipate excess internal heat in a timely manner. This leads to a continuous rise in internal temperature, which can also damage power distribution components, shorten their service life, and reduce the reliability and stability of the equipment.

[0004] Air in cold environments typically contains a large amount of dust, impurities, and other particulate matter. Most existing explosion-proof power distribution devices lack a comprehensive air filtration system during the air intake process, or the filtration effect is poor. This dust and impurities enter the device with the air, adhering to the surfaces of the power distribution components. Over time, this accumulation forms a layer of dirt, affecting the heat dissipation performance of the components, leading to localized temperature increases, and accelerating component aging and damage. Furthermore, dust and impurities can also penetrate the internal structures of components, such as the gaps between components on circuit boards and motor windings, causing short circuits, poor contact, and other faults. This severely affects the normal operation of the power distribution device, increasing maintenance costs and downtime.

[0005] Furthermore, after prolonged use, the filter discs of existing filtration devices are prone to clogging with dust and other impurities, leading to poor airflow and reduced air intake efficiency. Additionally, due to the lack of an effective unclogging mechanism, once the filter discs are clogged, manual replacement or cleaning is required. This not only increases maintenance workload and costs but also poses certain safety risks when performing manual operation in cold environments.

[0006] In cold environments, when air humidity is high, ice can easily form at the air inlet of explosion-proof power distribution equipment. Most existing systems lack effective preventative measures against this problem. Once the air inlet freezes, it severely hinders normal airflow, leading to insufficient air supply inside the equipment. This not only affects the heat dissipation of the power distribution components but may also cause abnormally high internal temperatures, further increasing the risk of equipment damage. Summary of the Invention

[0007] To address the aforementioned problems, this invention proposes an explosion-proof power distribution device suitable for cold environments, thereby more accurately resolving the issues raised in the background section.

[0008] This invention is achieved through the following technical solution: This invention proposes an explosion-proof power distribution device suitable for cold environments, comprising an outer shell, within which an inner shell is disposed, the inner shell being used for mounting power distribution components. A heat insulation frame one is installed on the inner bottom wall of the outer shell, and a heat insulation frame two is installed on the inner top wall of the outer shell. The heat insulation frame one is used to define the position of the inner shell. A thermal insulation structure is provided in the gap between the inner wall of the outer shell and the outer surface of the inner shell to prevent external temperature from being transferred through the outer shell to the inner shell and affecting the normal operation of the components inside the inner shell. The thermal insulation structure is made of thermal insulation cotton and includes thermal insulation cotton one located on the inner top wall of the outer shell and inserted into the heat insulation frame two, and thermal insulation cotton two located on the inner bottom wall of the outer shell and inserted into the heat insulation frame one. A cabinet door is installed on the surface of the outer shell, thermal insulation cotton three is installed on the inner wall of the outer shell, and thermal insulation cotton four is installed on the back of the cabinet door. Thermal insulation cotton three and thermal insulation cotton four are in contact with the inner shell.

[0009] Preferably, an air pump is installed on the side of the outer casing, and a beater is installed on the output part of the air pump. The beater is inserted into the inner casing to deliver air into the inner casing. An air inlet is installed on the input part of the air pump to extract outside air after the air pump is started.

[0010] Preferably, the air intake includes an air delivery pipe installed at the air pump and an air intake pipe for drawing in outside air. A filter cartridge is installed at the end of the air intake pipe. The filter cartridge is used to filter the air delivered from the air intake pipe to the filter cartridge. The filter cartridge is connected to the air delivery pipe.

[0011] Preferably, an installation plate is installed on the inner wall of the filter cylinder, and a filter plate is installed on the inner wall of the installation plate. The filter plate is used to filter the air entering the filter cylinder. A support rod is installed on one side of the air supply pipe inside the filter cylinder, and a needle plate is installed at the end of the support rod. The needle plate is used to push the filter plate to clear the blockage when the filter plate is blocked.

[0012] Preferably, a drain pipe is installed at the bottom of the filter cartridge to discharge the filtered dust, and a sealing plate is installed at the bottom of the drain pipe to prevent gas from escaping from the sealing plate when dust discharge is not required.

[0013] Preferably, the heat exchange box is provided with an air outlet for discharging overheated air from the inner shell. The air outlet includes an exhaust pipe inserted into the inner shell, with multiple serpentine tubes installed at the bottom of the exhaust pipe. The serpentine tubes pass through the heat exchange box and exit from the top of the heat exchange box. An air outlet pipe is installed at the end of the serpentine tubes. Multiple thin tubes are provided inside the heat exchange box, with the serpentine tubes inserted into the thin tubes. One end of the thin tubes is connected to the filter cartridge. An air collection hood is installed at the end of the air inlet pipe, and the air collection hood is connected to the thin tubes.

[0014] Preferably, the air intake pipe is equipped with a mounting cover, and a transmission part is installed inside the mounting cover. The transmission part is used to be driven to rotate by the gas when the gas enters the mounting cover. A flapping part is provided on one side of the outer shell. The flapping part is used to flap the air intake pipe to prevent ice from forming at the air intake. The transmission part is used to drive the rotation of the flapping part.

[0015] Preferably, the tapping part includes a rotatable rotating rod II, an eccentric roller is mounted on the surface of the rotating rod II, and a suspendable tapping plate is provided at the bottom of the eccentric roller. The tapping plate is used to tap the air intake pipe when the eccentric roller rotates, in order to prevent icing at the air intake pipe.

[0016] Preferably, the side of the striking plate is provided with a sliding groove, the side of the outer shell is provided with a suspension rod, the suspension rod is inserted into the sliding groove for suspending the striking plate, the side of the outer shell is provided with a mounting plate, the bottom of the mounting plate is provided with a return spring, and the bottom of the return spring is connected to the striking plate.

[0017] Preferably, the rotating rod extends to the outside of the mounting cover, and a toothed disc is installed at the end of the rotating rod, and a toothed disc is installed at the end of the rotating rod, with the toothed disc and the rotating rod meshing together.

[0018] Compared with the prior art, the present invention provides an explosion-proof power distribution device suitable for cold environments, which has the following advantages: This explosion-proof power distribution device, suitable for cold environments, utilizes multiple layers of insulation between the outer and inner shells, including insulation on the top and bottom walls and at the contact points with the inner shell. This effectively prevents heat exchange between cold outside air and the power distribution components inside the inner shell, maintaining a suitable temperature for the inner shell. Simultaneously, it is equipped with an air extraction pump that draws in outside air to raise the temperature of the inner shell when it is low. When the temperature is too high, the hot air is discharged through a serpentine tube in the exhaust section, exchanging heat with the cold air inside the heat exchange box. This precise temperature control ensures stable operation of the power distribution device in cold environments and prevents performance degradation or damage to components due to temperature issues.

[0019] This explosion-proof power distribution device, suitable for cold environments, utilizes multiple layers of insulation between the outer and inner shells, including insulation on the top and bottom walls and at the contact points with the inner shell. This effectively prevents heat exchange between cold outside air and the power distribution components inside the inner shell, maintaining a suitable temperature for the inner shell. Simultaneously, it is equipped with an air extraction pump that draws in outside air to raise the temperature of the inner shell when it is low. When the temperature is too high, the hot air is discharged through a serpentine tube in the exhaust section, exchanging heat with the cold air inside the heat exchange box. This precise temperature control ensures stable operation of the power distribution device in cold environments and prevents performance degradation or damage to components due to temperature issues.

[0020] This explosion-proof power distribution device, suitable for cold environments, features a built-in mounting cover and transmission unit at the air inlet pipe. When outside air enters, it impacts the transmission unit, causing it to rotate. Through gear meshing, this drives the rotating rod of the striking unit to rotate. The eccentric roller on the rotating rod drives the striking plate to move up and down, striking the air inlet pipe and preventing ice formation at the air inlet in cold environments. Simultaneously, the side groove of the striking plate, in conjunction with the side suspension rod of the outer casing, and the return spring, guide, limit, and return the movement of the striking plate, ensuring stable up-and-down movement and continuously and effectively preventing ice formation in the air inlet pipe. This ensures that air smoothly enters the filter cartridge for subsequent processing, guaranteeing normal air intake for the power distribution device in cold environments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an explosion-proof power distribution device suitable for cold environments proposed in this invention; Figure 2 This is a structural side view of an explosion-proof power distribution device suitable for cold environments proposed in this invention; Figure 3 This is a structural rear view of an explosion-proof power distribution device suitable for cold environments proposed in this invention; Figure 4 This is a front sectional view of the structure of an explosion-proof power distribution device suitable for cold environments proposed in this invention; Figure 5 This is a top view of the structure of an explosion-proof power distribution device suitable for cold environments proposed in this invention; Figure 6This is a top sectional view of the structure of an explosion-proof power distribution device suitable for cold environments proposed in this invention; Figure 7 This invention proposes an explosion-proof power distribution device suitable for cold environments. Figure 2 Enlarged diagram of region A in the image; Figure 8 This invention proposes an explosion-proof power distribution device suitable for cold environments. Figure 3 Enlarged schematic diagram of region C; Figure 9 This invention proposes an explosion-proof power distribution device suitable for cold environments. Figure 5 Enlarged schematic diagram of region B; Figure 10 This is a schematic diagram of the structure of an explosion-proof power distribution device mounting cover suitable for cold environments, as proposed in this invention.

[0022] In the diagram: 1. Outer shell; 11. Insulation cotton one; 12. Insulation cotton two; 13. Insulation cotton three; 14. Cabinet door; 15. Insulation cotton four; 2. Inner shell; 3. Heat insulation frame one; 4. Heat insulation frame two; 41. Heat insulation rod; 42. Pad; 5. Air guide pipe; 6. Air pump; 7. Air inlet; 71. Air delivery pipe; 72. Air inlet pipe; 73. Filter cartridge; 731. Mounting plate; 732. Filter plate; 733. Support rod; 734. Needle plate; 735. Return spring; 736. 737. Drain pipe; 74. Sealing plate; 75. Heat exchange box; 76. Thin tube; 77. Gas collection hood; 78. Mounting cover; 79. Transmission part; 70. Rotating rod; 71. Gear disc one; 72. Turbine; 80. Beating part; 81. Rotating rod two; 81. Gear disc two; 82. Eccentric roller; 83. Beating plate; 84. Slide groove; 85. Suspension rod; 86. Mounting plate; 97. Return spring; 98. Gas outlet; 91. Exhaust pipe; 92. Gas outlet pipe; 93. Serpentine tube. Detailed Implementation

[0023] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0024] Example

[0025] like Figures 1-10As shown, an embodiment of the present invention provides an explosion-proof power distribution device suitable for cold environments, comprising an outer shell 1, within which an inner shell 2 is disposed, for mounting power distribution components. A heat insulation frame 3 is installed on the inner bottom wall of the outer shell 1, and a heat insulation frame 4 is installed on the inner top wall. The heat insulation frame 3 defines the position of the inner shell 2. A thermal insulation structure is provided in the gap between the inner wall of the outer shell 1 and the outer surface of the inner shell 2 to prevent external temperature from being transferred through the outer shell 1 to the inner shell 2, affecting the normal operation of the components inside the inner shell 2. The thermal insulation structure is made of thermal insulation cotton, specifically including thermal insulation cotton 11 disposed on the inner top wall of the outer shell 1 and inserted into the heat insulation frame 4, and thermal insulation cotton 12 disposed on the inner bottom wall of the outer shell 1 and inserted into the heat insulation frame 3. A cabinet door 14 is installed on the surface of the outer casing 1. Insulation cotton 3 13 is installed on the inner wall of the outer casing 1, and insulation cotton 4 15 is installed on the back of the cabinet door 14. Insulation cotton 3 13 and insulation cotton 4 15 are in contact with the inner casing 2. In practical applications, the multiple layers of insulation cotton effectively block heat exchange between the cold outside air and the electrical components inside the inner casing 2, keeping the temperature inside the inner casing 2 within a suitable range for the operation of the electrical components and ensuring the normal operation of the power distribution device in cold environments.

[0026] In this invention, an air pump 6 is installed on the side of the outer casing 1. A tapping part 8 is installed at the output of the air pump 6, and the tapping part 8 is inserted into the inner casing 2 to deliver air into the inner casing 2. An air inlet 7 is installed at the input of the air pump 6, which is used to draw in outside air after the air pump 6 is started. When the temperature inside the inner casing 2 of the power distribution device is low, the air pump 6 is started, drawing in outside air through the air inlet 7 and delivering it into the inner casing 2, thereby raising the temperature inside the inner casing 2. This ensures that the power distribution components operate in a suitable temperature environment, preventing performance degradation or damage to the components due to excessively low temperatures.

[0027] In this invention, the air intake 7 includes an air supply pipe 71 installed at the air pump 6 and an air intake pipe 72 for drawing in outside air. A filter cartridge 73 is installed at the end of the air intake pipe 72. The filter cartridge 73 filters the air supplied from the air intake pipe 72 into the filter cartridge 73, and the filter cartridge 73 is connected to the air supply pipe 71. In actual use, outside air enters the filter cartridge 73 through the air intake pipe 72. The filter cartridge 73 filters dust, impurities, etc., from the air. The filtered clean air enters the air pump 6 through the air supply pipe 71, and is then supplied by the air pump 6 to the inner housing 2, ensuring the cleanliness of the air entering the inner housing 2 and preventing dust and other impurities from damaging the electrical components.

[0028] In this invention, an installation plate 731 is installed on the inner wall of the filter cylinder 73, and a filter plate 732 is installed on the inner wall of the installation plate 731. The filter plate 732 is used to filter the air entering the filter cylinder 73. A support rod 733 is installed inside the filter cylinder 73 on one side of the air supply pipe 71. A needle plate 734 is installed at the end of the support rod 733. The needle plate 734 is used to push the filter plate 732 to the needle plate 734 to clear the blockage. After the filter plate 732 has been used for a long time, a lot of dust and other impurities will accumulate on its surface, causing blockage. At this time, by pushing the filter plate 732 to contact the needle plate 734, the needles on the needle plate 734 will clear the blockage on the filter plate 732, restore the filtering function of the filter plate 732, ensure normal air filtration, and extend the service life of the filter plate 732.

[0029] In this invention, a drain pipe 736 is installed at the bottom of the filter cartridge 73 to discharge filtered dust. A sealing plate 737 is installed at the bottom of the drain pipe 736 to prevent gas from escaping through the sealing plate 737 when dust discharge is not required. After the filter disc 732 is cleared, dust and other impurities accumulated inside the filter cartridge 73 can be discharged through the drain pipe 736. When discharge is not required, the sealing plate 737 seals the drain pipe 736 to prevent outside air or impurities from entering the filter cartridge 73 through the drain pipe 736, ensuring the airtightness and filtration effect inside the filter cartridge 73.

[0030] In this invention, a heat exchange box 74 is provided, and an air outlet 9 is provided at the heat exchange box 74 to discharge superheated air from the inner shell 2. The air outlet 9 includes an exhaust pipe 91 inserted into the inner shell 2. Multiple serpentine tubes 93 are installed at the bottom of the exhaust pipe 91. The serpentine tubes 93 pass through the heat exchange box 74 and exit from the top of the heat exchange box 74. An air outlet pipe 92 is installed at the end of the serpentine tubes 93. Multiple thin tubes 741 are provided inside the heat exchange box 74. The serpentine tubes 93 are inserted into the thin tubes 741. One end of the thin tube 741 is connected to the filter cylinder 73. An air collection hood 75 is installed at the end of the air inlet pipe 72. The air collection hood 75 is connected to the thin tube 741. When the temperature inside the inner shell 2 is too high, the hot air inside the inner shell 2 enters the serpentine tube 93 through the exhaust pipe 91. The serpentine tube 93 exchanges heat with the outside cold air in the thin tube 741 in the heat exchange box 74, which lowers the temperature of the hot air. The cooled air is discharged from the exhaust pipe 92. At the same time, the outside air enters the thin tube 741 through the air collection hood 75, providing a cold source for heat exchange. This achieves the cooling of the air inside the inner shell 2 and ensures that the power distribution device operates at a suitable temperature.

[0031] In this invention, an installation cover 76 is built into the air intake pipe 72, and a transmission part 77 is installed inside the installation cover 76. The transmission part 77 is driven to rotate by the gas when the gas enters the installation cover 76. A striking part 8 is provided on one side of the outer shell 1. The striking part 8 is used to strike the air intake pipe 72 to prevent ice formation at the air inlet. The transmission part 77 is used to drive the rotation of the striking part 8. When outside air enters through the air intake pipe 72, the gas impacts the transmission part 77, causing it to rotate. The transmission part 77 drives the striking part 8 to actuate, striking the air intake pipe 72 to prevent ice formation at the air inlet of the air intake pipe 72 in cold environments. This ensures that the air can smoothly enter the filter cartridge 73 for filtration and subsequent transportation, ensuring normal air intake of the power distribution device in cold environments.

[0032] In this invention, the striking part 8 includes a rotatable rotating rod 81. An eccentric roller 82 is mounted on the surface of the rotating rod 81, and a suspended striking plate 83 is provided at the bottom of the eccentric roller 82. The striking plate 83 is used to strike the air intake pipe 72 when the eccentric roller 82 rotates, thereby preventing icing at the air intake pipe 72. When the transmission part 77 drives the rotating rod 81 to rotate, the eccentric roller 82 rotates accordingly. Due to the eccentric structure of the eccentric roller 82, the striking plate 83 moves up and down during the rotation of the eccentric roller 82, thereby striking the air intake pipe 72, effectively preventing icing at the air inlet of the air intake pipe 72, and ensuring normal air circulation.

[0033] In this invention, a groove 831 is provided on the side of the striking plate 83, and a suspension rod 84 is installed on the side of the outer shell 1. The suspension rod 84 is inserted into the groove 831 for suspending the striking plate 83. A mounting plate 85 is installed on the side of the outer shell 1, and a return spring 86 is installed at the bottom of the mounting plate 85. The bottom of the return spring 86 is connected to the striking plate 83. After the eccentric roller 82 rotates and causes the striking plate 83 to move upward to strike the air intake pipe 72, the elastic force of the return spring 86 causes the striking plate 83 to quickly return to its original position. At the same time, the suspension rod 84 slides in the groove 831, which guides and limits the movement of the striking plate 83, ensuring that the striking plate 83 can move up and down stably and continuously and effectively strike the air intake pipe 72 to prevent icing.

[0034] In this invention, the rotating rod 771 extends through the exterior of the mounting cover 76. A geared disc 772 is mounted at the end of the rotating rod 771, and a geared disc 811 is mounted at the end of the rotating rod 81. The geared disc 811 and the rotating rod 771 are meshed together. When outside air enters the intake pipe 72 and impacts the transmission unit 77, causing the rotating rod 771 to rotate, the geared disc 772 rotates accordingly. Since the geared disc 772 is meshed with the geared disc 811, the geared disc 811 drives the rotating rod 81 to rotate, thereby realizing the action of the striking part 8. Through gear meshing, the stability and accuracy of the transmission between the transmission unit 77 and the striking part 8 are ensured, enabling the striking part 8 to effectively and promptly strike the intake pipe 72 to prevent icing.

[0035] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore, such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0036] Finally, it should be noted that the above descriptions are merely 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An explosion-proof power distribution device suitable for cold environments, comprising a housing (1), characterized in that, An inner shell (2) is provided inside the outer shell (1). The inner shell (2) is used for the installation of electrical components. A heat insulation frame one (3) is installed on the inner bottom wall of the outer shell (1), and a heat insulation frame two (4) is installed on the inner top wall of the outer shell (1). The heat insulation frame one (3) is used to limit the position of the inner shell (2). A heat insulation structure is provided in the gap between the inner wall of the outer shell (1) and the outer surface of the inner shell (2) to prevent the external temperature from being transferred to the inner shell (2) through the outer shell (1) and affecting the normal operation of the components inside the inner shell (2). In the middle, the material of the insulation structure is insulation cotton. The insulation structure includes insulation cotton one (11) set in the top wall of the outer shell (1) and inserted into the heat insulation frame two (4) and insulation cotton two (12) set in the bottom wall of the outer shell (1) and inserted into the heat insulation frame one (3). The surface of the outer shell (1) is equipped with a cabinet door (14). Insulation cotton three (13) is installed on the inner wall of the outer shell (1). Insulation cotton four (15) is installed on the back of the cabinet door (14). Insulation cotton three (13) and insulation cotton four (15) are in contact with the inner shell (2).

2. The explosion-proof power distribution device suitable for cold environments according to claim 1, characterized in that, An air pump (6) is installed on the side of the outer shell (1). A beater (8) is installed on the output part of the air pump (6). The beater (8) is inserted into the inner shell (2) to deliver air into the inner shell (2). An air inlet (7) is installed on the input part of the air pump (6). The air inlet (7) is used to extract outside air after the air pump (6) is started.

3. The explosion-proof power distribution device suitable for cold environments according to claim 2, characterized in that, The air intake (7) includes an air delivery pipe (71) installed at the air pump (6) and an air intake pipe (72) for drawing in outside air. A filter cartridge (73) is installed at the end of the air intake pipe (72). The filter cartridge (73) is used to filter the air delivered from the air intake pipe (72) to the filter cartridge (73). The filter cartridge (73) is connected to the air delivery pipe (71).

4. The explosion-proof power distribution device suitable for cold environments according to claim 3, characterized in that, An installation plate (731) is installed on the inner wall of the filter cylinder (73), and a filter plate (732) is installed on the inner wall of the installation plate (731). The filter plate (732) is used to filter the air entering the filter cylinder (73). A support rod (733) is installed on one side of the air supply pipe (71) inside the filter cylinder (73). A needle plate (734) is installed at the end of the support rod (733). The needle plate (734) is used to push the filter plate (734) to clear the blockage when the filter plate (732) is blocked.

5. The explosion-proof power distribution device suitable for cold environments according to claim 4, characterized in that, The bottom of the filter cartridge (73) is equipped with a drain pipe (736) for discharging filtered dust. The bottom of the drain pipe (736) is equipped with a sealing plate (737) to prevent gas from escaping from the sealing plate (737) when dust discharge is not required.

6. The explosion-proof power distribution device suitable for cold environments according to claim 5, characterized in that, An air outlet (9) is provided at the heat exchange box (74). The air outlet (9) is used to discharge the overheated air inside the inner shell (2). The air outlet (9) includes an exhaust pipe (91) inserted into the inner shell (2). Multiple serpentine tubes (93) are installed at the bottom of the exhaust pipe (91). The serpentine tubes (93) pass through the heat exchange box (74) and exit from the top of the heat exchange box (74). An air outlet pipe (92) is installed at the end of the serpentine tubes (93). Multiple thin tubes (741) are provided inside the heat exchange box (74). The serpentine tubes (93) are inserted into the thin tubes (741). One end of the thin tubes (741) is connected to the filter cartridge (73). An air collection hood (75) is installed at the end of the air inlet pipe (72). The air collection hood (75) is connected to the thin tubes (741).

7. The explosion-proof power distribution device suitable for cold environments according to claim 6, characterized in that, An installation cover (76) is built into the air intake pipe (72), and a transmission part (77) is installed inside the installation cover (76). The transmission part (77) is used to be driven to rotate by the gas when the gas enters the installation cover (76). A slapping part (8) is provided on one side of the outer shell (1). The slapping part (8) is used to slap the air intake pipe (72) to prevent ice from forming at the air intake. The transmission part (77) is used to drive the slapping part (8) to rotate.

8. The explosion-proof power distribution device suitable for cold environments according to claim 7, characterized in that, The tapping part (8) includes a rotatable rotating rod two (81), an eccentric roller (82) is mounted on the surface of the rotating rod two (81), and a hanging tapping plate (83) is provided at the bottom of the eccentric roller (82). The tapping plate (83) is used to tap the air inlet pipe (72) when the eccentric roller (82) rotates, and is used to prevent icing at the air inlet pipe (72).

9. The explosion-proof power distribution device suitable for cold environments according to claim 8, characterized in that, The side of the striking plate (83) is provided with a sliding groove (831), and the side of the outer shell (1) is provided with a suspension rod (84). The suspension rod (84) is inserted into the sliding groove (831) for suspending the striking plate (83). The side of the outer shell (1) is provided with a mounting plate (85), and the bottom of the mounting plate (85) is provided with a return spring (86). The bottom of the return spring (86) is connected to the striking plate (83).

10. An explosion-proof power distribution device suitable for cold environments according to claim 9, characterized in that, The rotating rod (771) extends through the outside of the mounting cover (76). A toothed disc (772) is installed at the end of the rotating rod (771), and a toothed disc (811) is installed at the end of the rotating rod (81). The toothed disc (811) and the rotating rod (771) are meshed together.

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