Distribution box with anti-dust-deposition heat dissipation structure

Abstract

The invention relates to a power distribution box with an anti-dust-deposition heat dissipation structure, which is applied to the technical field of power distribution boxes and comprises a box body and an anti-dust-deposition heat dissipation mechanism arranged on the box body. The anti-accumulation heat dissipation mechanism comprises an expansion heat dissipation barrel and an electric telescopic rod, the expansion heat dissipation barrel is embedded in the outer wall of the top end of the box body in a penetrating mode, the electric telescopic rod is fixedly installed at the top end of the box body, the bottom end of the expansion heat dissipation barrel is arranged to be in an opening shape, and an exhaust and suction piston plate connected with the expansion heat dissipation barrel in a sliding and sealing mode is arranged in the expansion heat dissipation barrel. When the anti-accumulation heat dissipation mechanism carries out forced ventilation and heat dissipation on the interior of the distribution box, the air outlet and the air inlet can be repeatedly turned, so that dust on the side dust-proof net and the top dust-proof net can be automatically cleaned, the dust-proof nets are prevented from being blocked by the dust, the heat dissipation performance of the distribution box is prevented from being influenced, the temperature in the distribution box can be prevented from being too high, and the service life of the distribution box is prolonged. And the stability and the safety of the distribution box are improved.

Description

Technical Field

[0001] The invention relates to a distribution box, in particular to a distribution box with a dust accumulation prevention and heat dissipation structure applied in the technical field of distribution boxes. Background Art

[0002] The distribution box is a common 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] In order to prevent the internal temperature of the distribution box from being too high, vents are usually set on the box body for ventilation and heat dissipation, and in order to prevent dust from entering the distribution box, dust screens are usually set at the vents to intercept dust. The distribution box in the prior art is usually also equipped with a cooling fan for forced ventilation and heat dissipation to further enhance the heat dissipation performance, but this forced ventilation and heat dissipation method cannot clean the dust on the dust screen. As the dust on the dust screen continues to accumulate, the dust screen is easily blocked by dust, resulting in increasingly poor ventilation and heat dissipation effects, which in turn easily leads to excessive temperature inside the distribution box. Therefore, we propose a distribution box with a dust-proof heat dissipation structure. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to effectively clean the dust on the dustproof net while performing forced ventilation and heat dissipation inside the distribution box.

[0005] The heat dissipation mechanism is a kind of heat dissipation mechanism, and it is a kind of heat dissipation mechanism, and it is a kind of heat dissipation mechanism, and it is a kind of heat dissipation mechanism with heat dissipation effect. The anti-accumulation heat dissipation mechanism also includes a heat dissipation controller fixedly installed on the expanded heat dissipation tube. The heat dissipation controller is provided with a threshold setting module and a heat dissipation control module. The temperature sensor and the threshold setting module are both connected to the heat dissipation control module signal, and the heat dissipation control module is connected to the electric telescopic rod signal.

[0006] In the above-mentioned distribution box with anti-dust accumulation and heat dissipation structure, when the anti-dust accumulation and heat dissipation mechanism performs forced ventilation and heat dissipation inside the distribution box, the air outlet and the air inlet will be repeatedly rotated, so as to automatically clean the dust on the side dust screen and the top dust screen, thereby preventing the dust screen from being blocked by dust and affecting the heat dissipation performance of the distribution box.

[0007] As a further improvement of the present application, the number of air guide holes and hole-blocking rods is equal and corresponds one to one, each air guide hole is located directly below the corresponding hole-blocking rod, and the hole-blocking rod can be slidably and sealedly connected to the air guide hole when inserted into the air guide hole.

[0008] As a further improvement of the present application, the expansion heat dissipation cylinder, the exhaust and suction piston plate, the lifting linkage rod, and the hole plugging rod are all made of wear-resistant materials.

[0009] As another improvement of the present application, the top of the expanded heat dissipation tube is also connected to a hot air duct, the other end of the hot air duct is connected to the interior of the box, a distance sensor is fixedly installed in the expanded heat dissipation tube, an air guide solenoid valve is arranged on the hot air duct, a ventilation solenoid valve is arranged on the top ventilation pipe, and a valve control adjustment module is also arranged in the heat dissipation controller. The threshold setting module and the distance sensor are both connected with the valve control adjustment module signal, and the valve control adjustment module is connected with the air guide solenoid valve and the ventilation solenoid valve signal. Through the above arrangement, the heat dissipation effect and heat dissipation efficiency can be improved under the premise of ensuring the cleaning effect of the dustproof net on the opposite side.

[0010] The distance sensor is located below the suction and discharge piston plate, the ventilation solenoid valve is in an open state, and the air guide solenoid valve is in a closed state.

[0011] As another improved supplement of the present application, the heat dissipation method of the anti-accumulation heat dissipation mechanism is: S1. Reasonably set the start heat dissipation temperature threshold, stop heat dissipation temperature threshold and distance threshold through the threshold setting module; S2. When the temperature inside the box reaches the start-up heat dissipation temperature threshold, the heat dissipation control module will start the electric telescopic rod, so that the electric telescopic rod drives the suction and exhaust piston plate to move up and down to force ventilation and heat dissipation inside the box. When the temperature inside the box drops to the stop-heat dissipation temperature threshold, the heat dissipation control module will close the electric telescopic rod; S3. In the process of the electric telescopic rod driving the exhaust and suction piston plate to move downward, when the distance between the exhaust and suction piston plate and the temperature sensor is reduced to the distance threshold, the valve control regulation module will close the ventilation solenoid valve and open the gas guide solenoid valve. When the exhaust and suction piston plate moves downward to the initial position, the valve control regulation module will close the gas guide solenoid valve and open the ventilation solenoid valve.

[0012] As another improvement supplement to the present application, the bottom end of the side ventilation pipe is connected to a cold air duct, the cold air duct is located in the box, an inlet check valve is arranged on the cold air duct, an outlet check valve is arranged on the side ventilation pipe, the outlet check valve is located on the side of the cold air duct away from the side dust screen, the conduction direction of the inlet check valve is from top to bottom, and the conduction direction of the outlet check valve is from the side of the outlet check valve away from the cold air duct to the side of the outlet check valve close to the cold air duct, which can further improve the heat dissipation effect and heat dissipation efficiency.

[0013] In summary, the present application sets up an anti-accumulation heat dissipation mechanism, so that when the anti-accumulation heat dissipation mechanism performs forced ventilation and heat dissipation on the inside of the distribution box, the air outlet and the air inlet will be repeatedly switched, so that the dust on the side dust screen and the top dust screen can be automatically cleaned, so as to prevent the dust screen from being blocked by dust and affecting the heat dissipation performance of the distribution box, thereby preventing the internal temperature of the distribution box from being too high, and improving the stability and safety of the distribution box; through the joint setting of the hot air duct, the air guide solenoid valve, the control valve adjustment module, etc., the anti-accumulation heat dissipation mechanism can perform forced ventilation and heat dissipation on the inside of the distribution box During the heat dissipation process, the valve control module will intelligently control the opening and closing of the air guide solenoid valve and the ventilation solenoid valve, and during the downward movement of the exhaust and suction piston plate, the hot air can be diverted to the top of the exhaust and suction piston plate through the hot air duct, thereby improving the heat dissipation effect and heat dissipation efficiency while ensuring the cleaning effect of the dustproof net on the opposite side, thereby improving the practicality and reliability of the anti-accumulation heat dissipation mechanism; through the joint setting of the cold air duct, the air intake check valve, etc., the cold air can be prevented from being discharged, and the discharge of hot air can be facilitated, thereby further improving the heat dissipation effect and heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application; Figure 2 This is a schematic cross-sectional structural diagram of the box body in the first embodiment of the present application; Figure 3 This is a schematic diagram of the cross-sectional structure of the expanded heat dissipation tube in the first embodiment of the present application; Figure 4 This is a system structure block diagram of a heat dissipation controller in the first embodiment of the present application; Figure 5 This is a pictographic demonstration diagram of the anti-accumulation heat dissipation mechanism in the first embodiment of the present application performing forced ventilation and heat dissipation on the interior of the box; Figure 6 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present application; Figure 7 This is a schematic cross-sectional structural diagram of the box body in the second embodiment of the present application; Figure 8 This is a schematic cross-sectional structure diagram of the expanded heat dissipation tube in the second embodiment of the present application; Fig. 9 This is a system structure block diagram of a heat dissipation controller in the second embodiment of the present application.

[0015] Description of the numbers in the figure: 101. Box body; 102. Side ventilation pipe; 103. Side dust screen; 104. Cold air duct; 105. Inlet check valve; 106. Exhaust check valve; 201. Expanded heat sink; 202. Electric telescopic rod; 203. Exhaust and suction piston plate; 204. Lifting linkage rod; 205. Connecting rod; 206. Hole plugging rod; 207. Air guide hole; 208. Top ventilation pipe; 209. Top dust screen; 210. Hot air duct; 211. Air guide solenoid valve; 212. Ventilation solenoid valve; 213. Distance sensor; 003. Heat dissipation controller. DETAILED DESCRIPTION

[0016] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0017] The first implementation method: Figure 1-5A distribution box with an anti-dust accumulation and heat dissipation structure is shown, comprising a box body 101 and an anti-dust accumulation and heat dissipation mechanism arranged on the box body 101, a temperature sensor is arranged in the box body 101, the anti-dust accumulation and heat dissipation mechanism comprises an extended heat dissipation tube 201 penetrating and embedded in the top outer wall of the box body 101, an electric telescopic rod 202 fixedly installed on the top of the box body 101, the bottom end of the extended heat dissipation tube 201 is arranged in an open shape, a discharge and suction piston plate 203 is arranged in the extended heat dissipation tube 201 and is slidably and tightly connected thereto, a lifting linkage rod 204 is fixedly connected to the top of the discharge and suction piston plate 203, the lifting linkage rod 204 penetrates the top outer wall of the extended heat dissipation tube 201 and is slidably and tightly connected thereto, a connecting rod 205 is fixedly connected between the lifting linkage rod 204 and the output end of the electric telescopic rod 202, a plurality of plugging rods 206 evenly distributed along a ring are fixedly installed on the top inner wall of the extended heat dissipation tube 201, and a plurality of air guide holes 207 matching the plugging rods 206 are opened on the discharge and suction piston plate 203. The number of air guide holes 207 and the plugging rods 206 are equal and one-to-one corresponding, each air guide hole 207 is located directly below the corresponding plugging rod 206, and the plugging rod 206 can be slidably sealed and connected with the air guide hole 207 when inserted into the air guide hole 207, the expansion heat dissipation cylinder 201, the exhaust piston plate 203, the lifting linkage rod 204, and the plugging rod 206 are all made of wear-resistant materials, the top of the expansion heat dissipation cylinder 201 is connected to the top ventilation pipe 208, and the top of the top ventilation pipe 208 is fixedly connected to the top A dustproof net 209 is provided, and a side ventilation pipe 102 is connected to the side wall of the box body 101. The end of the side ventilation pipe 102 away from the box body 101 is fixedly connected to a side dustproof net 103. The anti-accumulation heat dissipation mechanism also includes a heat dissipation controller 003 fixedly installed on the extended heat dissipation tube 201. The heat dissipation controller 003 is provided with a threshold setting module and a heat dissipation control module. The temperature sensor and the threshold setting module are both connected to the heat dissipation control module signal, and the heat dissipation control module is connected to the electric telescopic rod 202 signal.

[0018] According to the actual situation, the threshold setting module is used to reasonably set the start heat dissipation temperature threshold and the stop heat dissipation temperature threshold. The hot air in the box 101 can flow to the top of the exhaust and suction piston plate 203 through the air guide hole 207. The temperature sensor can monitor the temperature inside the box 101, and the temperature data monitored by the box 101 will be transmitted to the heat dissipation control module in real time. When the temperature inside the box 101 reaches the start heat dissipation temperature threshold, the heat dissipation control module will start the electric telescopic rod 202, so that the electric telescopic rod 202 drives the exhaust and suction piston plate 203 to move up and down back and forth through the connecting rod 205 and the lifting linkage rod 204 (the lifting linkage rod 204 drives the exhaust and suction piston plate 203 to move upward to the highest After the discharge and suction piston plate 203 is reset, it will drive the discharge and suction piston plate 203 to move downward and reset, that is, to make 203 return to the initial position, and then drive the discharge and suction piston plate 203 to move upward again, and repeat this process) to force ventilation and heat dissipation inside the box body 101. After the temperature inside the box body 101 drops to the temperature threshold for stopping heat dissipation, the heat dissipation control module will close the electric telescopic rod 202 (the heat dissipation control module will close the electric telescopic rod 202 again after the discharge and suction piston plate 203 is reset). In the process of the discharge and suction piston plate 203 moving upward, when the plugging rod 206 is inserted into the air guide hole 207, the discharge and suction piston plate 203 will squeeze the hot air above it, so that the hot air is discharged outward through the top vent pipe 208. At the same time, the box The cold air with relatively low temperature in the external environment of the body 101 will enter the inner side of the box body 101 through the side ventilation pipe 102. In this process, the top ventilation pipe 208 is the air outlet and the side ventilation pipe 102 is the air inlet. When the exhaust piston plate 203 moves downward, the cold air in the external environment will enter the inner side of the expansion heat dissipation tube 201 through the top ventilation pipe 208, and the hot air inside the box body 101 will be discharged to the outside of the box body 101 through the side ventilation pipe 102. In this process, the top ventilation pipe 208 is the air inlet and the side ventilation pipe 102 is the air outlet. When the top ventilation pipe 208 is the air outlet, the flow of air will blow away the dust attached to the top dustproof net 209 to prevent the top dustproof net 209 from being blocked by dust. The heat dissipation performance of the distribution box is affected by clogging. Similarly, when the side ventilation pipe 102 is the air outlet, the flow of air will blow away the dust attached to the side dustproof net 103, and avoid the side dustproof net 103 being blocked by dust and causing the heat dissipation performance of the distribution box to be affected. Therefore, through the setting of the anti-accumulation heat dissipation mechanism, when the anti-accumulation heat dissipation mechanism performs forced ventilation and heat dissipation on the inside of the distribution box, the air outlet and the air inlet will be repeatedly turned, so that the dust on the side dustproof net 103 and the top dustproof net 209 can be automatically cleaned, so as to avoid the dustproof net being blocked by dust and affecting the heat dissipation performance of the distribution box, thereby avoiding the internal temperature of the distribution box from being too high, thereby improving the stability and safety of the distribution box.

[0019] It should be noted that those skilled in the art can reasonably set a stagnation time parameter through the threshold setting module. After setting the stagnation time parameter, when the heat dissipation control module controls the electric telescopic rod 202 to drive the exhaust and suction piston plate 203 to move up and down, after the exhaust and suction piston plate 203 moves to the highest point, the heat dissipation control module will not immediately control the electric telescopic rod 202 to drive the exhaust and suction piston plate 203 to move downward and reset, but will stagnate for a certain period of time (the stagnation time is equal to the stagnation time parameter). Similarly, after the heat dissipation control module controls the electric telescopic rod 202 to drive the exhaust and suction piston plate 203 to move downward and reset, it will also stagnate for a certain period of time. In this way, the cold air just inhaled can be prevented from being discharged again, and the hot air can be better discharged, thereby improving the heat dissipation effect.

[0020] The second implementation method: Figure 6-9 A distribution box with an anti-dust accumulation and heat dissipation structure is shown. Different from the first embodiment, the top of the extended heat dissipation tube 201 is also connected to a hot air duct 210, and the other end of the hot air duct 210 is connected to the interior of the box body 101. A distance sensor 213 is fixedly installed in the extended heat dissipation tube 201, an air guide solenoid valve 211 is arranged on the hot air duct 210, and a ventilation solenoid valve 212 is arranged on the top ventilation pipe 208. A valve control adjustment module is also arranged in the heat dissipation controller 003. The threshold setting module and the distance sensor 213 are both connected to the valve control adjustment module signal, and the valve control adjustment module is connected to the air guide solenoid valve 211 and the ventilation solenoid valve 212 signal. The distance sensor 213 is located below the suction and exhaust piston plate 203, the ventilation solenoid valve 212 is in an open state, and the air guide solenoid valve 211 is in a closed state.

[0021] The heat dissipation method of the anti-accumulation heat dissipation mechanism in this embodiment is: S1. Reasonably set the start heat dissipation temperature threshold, stop heat dissipation temperature threshold and distance threshold through the threshold setting module; S2. When the temperature inside the box 101 reaches the start-up heat dissipation temperature threshold, the heat dissipation control module starts the electric telescopic rod 202, so that the electric telescopic rod 202 drives the suction and exhaust piston plate 203 to move up and down to force ventilation and heat dissipation inside the box 101. When the temperature inside the box 101 drops to the stop-heat dissipation temperature threshold, the heat dissipation control module turns off the electric telescopic rod 202. S3. In the process of the electric telescopic rod 202 driving the discharge and suction piston plate 203 to move downward, when the distance between the discharge and suction piston plate 203 and the temperature sensor is reduced to the distance threshold, the valve control regulation module will close the ventilation solenoid valve 212 and open the gas guide solenoid valve 211; when the discharge and suction piston plate 203 moves downward to the initial position, the valve control regulation module will close the gas guide solenoid valve 211 and open the ventilation solenoid valve 212.

[0022] The distance sensor 213 can monitor the distance between it and the discharge and suction piston plate 203, and the distance data monitored by the distance sensor 213 will be transmitted to the control valve adjustment module in real time, so that the control valve adjustment module can determine the movement state of the discharge and suction piston plate 203 by analyzing the distance data monitored by the distance sensor 213 (the increase in distance indicates that the discharge and suction piston plate 203 is moving upward, and the decrease in distance indicates that the discharge and suction piston plate 203 is moving downward). In the process of forced ventilation and heat dissipation of the distribution box by the anti-accumulation heat dissipation mechanism, when the discharge and suction piston plate 203 moves upward, since the ventilation solenoid valve 212 is in the open state and the gas guide solenoid valve 211 is in the closed state, The state enables the hot air to be discharged smoothly, and the hot air will not flow back into the box body 101 through the hot air duct 210. When the exhaust and suction piston plate 203 moves downward, after the exhaust and suction piston plate 203 moves downward for a certain distance, the control valve regulating module will close the ventilation solenoid valve 212 and open the air guide solenoid valve 211, so that when the exhaust and suction piston plate 203 just starts to move downward, the ventilation solenoid valve 212 is in the open state and the air guide solenoid valve 211 is in the closed state. In this case, the downward movement of the exhaust and suction piston plate 203 will cause the hot air to be discharged outward through the side ventilation pipe 102 in a concentrated manner, thereby ensuring the cleaning effect of the dustproof net 103 on the opposite side. The control valve regulating module After closing the ventilation solenoid valve 212 and opening the air guide solenoid valve 211, the downward movement of the exhaust and suction piston plate 203 will cause the hot air in the box body 101 to be discharged outwardly through the side ventilation pipe 102 while flowing to the top of the exhaust and suction piston plate 203 through the hot air conduit 210, so that when the exhaust and suction piston plate 203 moves upward subsequently, the hot air can be effectively discharged outwardly, thereby improving the heat dissipation effect. Moreover, when the exhaust and suction piston plate 203 moves downward, the hot air can be guided to the top of the exhaust and suction piston plate 203 through the hot air conduit 210, so that after the exhaust and suction piston plate 203 moves downward and resets, the heat dissipation control module can directly control the electric telescopic rod 202 to drive The suction and exhaust piston plate 203 moves upward without stopping. Therefore, through the joint arrangement of the hot air duct 210, the air guide solenoid valve 211, the valve control adjustment module, etc., during the process of forced ventilation and heat dissipation of the distribution box by the anti-accumulation heat dissipation mechanism, the valve control adjustment module will intelligently control the opening and closing of the air guide solenoid valve 211 and the ventilation solenoid valve 212, and during the downward movement of the suction and exhaust piston plate 203, the hot air can be guided to the top of the suction and exhaust piston plate 203 through the hot air duct 210, thereby improving the heat dissipation effect and heat dissipation efficiency while ensuring the cleaning effect of the dustproof net 103 on the opposite side, thereby improving the practicality and reliability of the anti-accumulation heat dissipation mechanism.

[0023] See also Figure 7The bottom end of the side ventilation pipe 102 is connected with a cold air duct 104, and the cold air duct 104 is located in the box body 101. An air inlet check valve 105 is arranged on the cold air duct 104, and an air outlet check valve 106 is arranged on the side of the cold air duct 104 away from the side dustproof net 103. The conducting direction of the air inlet check valve 105 is from top to bottom, and the conducting direction of the air outlet check valve 106 is from the side of the air outlet check valve 106 away from the cold air duct 104 to the side of the air outlet check valve 106 close to the cold air duct 104. When the exhaust and suction piston plate 203 moves upward, the cold air can enter the box body 101 through the side ventilation pipe 102, the cold air duct 104 and the air inlet check valve 105. During movement, the hot air can be discharged to the outside of the box body 101 through the air outlet check valve 106 and the side vent pipe 102, and the cold air duct 104 can guide the cold air to a position away from the side vent pipe 102, so that after the exhaust and suction piston plate 203 moves to the highest point, it can move directly downward without stagnation, and will not cause the cold air to be discharged, and the hot air can be discharged better. Therefore, in this embodiment, there is no need to set the stagnation time parameter, and there is no need to stagnate after the exhaust and suction piston plate 203 moves to the highest point and after the exhaust and suction piston plate 203 moves downward and reset. Therefore, through the joint setting of the cold air duct 104, the air intake check valve 105, etc., the cold air can be prevented from being discharged, and it can be beneficial to the discharge of hot air, thereby further improving the heat dissipation effect and heat dissipation efficiency.

[0024] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A distribution box with an anti-dust accumulation and heat dissipation structure, comprising a box body (101) and an anti-dust accumulation and heat dissipation mechanism arranged on the box body (101), wherein a temperature sensor is arranged in the box body (101), It is characterized in that The anti-accumulation heat dissipation mechanism comprises an expansion heat dissipation tube (201) penetrating and embedded in the top outer wall of the box body (101), and an electric telescopic rod (202) fixedly mounted on the top of the box body (101); the bottom end of the expansion heat dissipation tube (201) is arranged to be open; a discharge and suction piston plate (203) is arranged in the expansion heat dissipation tube (201) and is slidably and tightly connected thereto; a lifting linkage rod (204) is fixedly connected to the top of the discharge and suction piston plate (203); the lifting linkage rod (204) penetrates the top outer wall of the expansion heat dissipation tube (201) and is slidably and tightly connected thereto; the output end of the lifting linkage rod (204) and the electric telescopic rod (202) A connecting rod (205) is fixedly connected between the two components; a plurality of plugging rods (206) evenly distributed in a ring shape are fixedly installed on the inner wall at the top end of the expansion heat dissipation tube (201); a plurality of air guide holes (207) matching the plugging rods (206) are opened on the suction and discharge piston plate (203); a top ventilation pipe (208) is connected to the top end of the expansion heat dissipation tube (201); a top dustproof net (209) is fixedly connected to the top end of the top ventilation pipe (208); a side ventilation pipe (102) is connected to the side wall of the box body (101); and a side dustproof net (103) is fixedly connected to the end of the side ventilation pipe (102) away from the box body (101); The anti-accumulation heat dissipation mechanism further comprises a heat dissipation controller (003) fixedly mounted on the expansion heat dissipation tube (201), wherein the heat dissipation controller (003) is provided with a threshold setting module and a heat dissipation control module, wherein the temperature sensor and the threshold setting module are both signal-connected to the heat dissipation control module, and the heat dissipation control module is signal-connected to the electric telescopic rod (202).

2. A distribution box with a dust-proof heat dissipation structure according to claim 1, It is characterized in that The number of the air guide holes (207) and the hole blocking rods (206) are equal and correspond one to one, each of the air guide holes (207) is located directly below the corresponding hole blocking rod (206), and when the hole blocking rod (206) is inserted into the air guide hole (207), it can be slidably sealed and connected with the air guide hole (207).

3. A distribution box with dust-proof heat dissipation structure according to claim 1, It is characterized in that The expansion heat dissipation cylinder (201), the exhaust and suction piston plate (203), the lifting linkage rod (204), and the hole blocking rod (206) are all made of wear-resistant materials.

4. A distribution box with a dust-proof heat dissipation structure according to claim 1, It is characterized in that The top end of the expanded heat dissipation tube (201) is also connected to a hot air conduit (210), the other end of the hot air conduit (210) is connected to the interior of the box (101), a distance sensor (213) is fixedly installed in the expanded heat dissipation tube (201), an air guide solenoid valve (211) is arranged on the hot air conduit (210), a ventilation solenoid valve (212) is arranged on the top ventilation pipe (208), a valve control regulating module is also arranged in the heat dissipation controller (003), the threshold setting module and the distance sensor (213) are both signal-connected to the valve control regulating module, and the valve control regulating module is signal-connected to the air guide solenoid valve (211) and the ventilation solenoid valve (212).

5. A distribution box with dust-proof and heat-dissipating structure according to claim 4, It is characterized in that The distance sensor (213) is located below the suction and discharge piston plate (203), the ventilation solenoid valve (212) is in an open state, and the air guide solenoid valve (211) is in a closed state.

6. A distribution box with dust-proof heat dissipation structure according to claim 5, It is characterized in that The heat dissipation method of the anti-accumulation heat dissipation mechanism is: S1. Reasonably set the start heat dissipation temperature threshold, stop heat dissipation temperature threshold and distance threshold through the threshold setting module; S2. When the temperature inside the box (101) reaches a heat dissipation start temperature threshold, the heat dissipation control module starts the electric telescopic rod (202), so that the electric telescopic rod (202) drives the suction and discharge piston plate (203) to move up and down, so as to perform forced ventilation and heat dissipation inside the box (101). When the temperature inside the box (101) drops to a heat dissipation stop temperature threshold, the heat dissipation control module turns off the electric telescopic rod (202); S3. During the process in which the electric telescopic rod (202) drives the discharge and suction piston plate (203) to move downward, when the distance between the discharge and suction piston plate (203) and the temperature sensor is reduced to a distance threshold, the valve control and regulation module closes the ventilation solenoid valve (212) and opens the air guide solenoid valve (211); when the discharge and suction piston plate (203) moves downward to an initial position, the valve control and regulation module closes the air guide solenoid valve (211) and opens the ventilation solenoid valve (212).

7. A distribution box with a dust-proof heat dissipation structure according to claim 1, It is characterized in that The bottom end of the side ventilation pipe (102) is connected to a cold air duct (104), the cold air duct (104) is located in the box body (101), an air inlet check valve (105) is provided on the cold air duct (104), and an air outlet check valve (106) is provided on the side ventilation pipe (102), and the air outlet check valve (106) is located on a side of the cold air duct (104) away from the side dustproof net (103).

8. A distribution box with dust-proof and heat-dissipating structure according to claim 7, It is characterized in that The conducting direction of the air inlet check valve (105) is from top to bottom, and the conducting direction of the air outlet check valve (106) is from the side of the air outlet check valve (106) away from the cold air conduit (104) to the side of the air outlet check valve (106) close to the cold air conduit (104).

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