A distribution box with dustproof function

Abstract

The application belongs to the technical field of distribution box, and particularly discloses a dustproof distribution box, which comprises a distribution box body and a box door rotatably installed at the front end of the distribution box body, a heat dissipation bin is embedded in the rear end of the distribution box body, a filter bin is arranged in the heat dissipation bin, a heat dissipation fan is fixedly installed in the middle of the filter bin, sealing plates are fixedly installed on both sides of the filter bin and close to the lower part, rubber frame pads are arranged on the outer edges of the two sealing plates which are close to each other, an air inlet channel is arranged between the two sealing plates, a dust blocking assembly is arranged in the air inlet channel, an air inlet bin is connected to the bottom of the heat dissipation bin, and the inside and the upper part of the air inlet bin are in an open structure. When the dust blocking assembly is used for dust cleaning, the air inlet channel is closed, the dust falling off is isolated from the air inlet airflow through the high-frequency vibration of the dust filtering and dust removing assembly, the dust is prevented from being inhaled again, efficient self-cleaning is realized, and the labor maintenance cost is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of distribution box technology, and specifically discloses a distribution box with dustproof function. Background Technology

[0002] As a key distribution and control device in the power system, the distribution box integrates a large number of electrical components (such as circuit breakers, contactors, relays, etc.). These components generate a lot of heat during operation. Poor heat dissipation will lead to excessively high internal temperatures, accelerating insulation aging, reducing equipment lifespan, and even causing fires. Therefore, modern distribution boxes generally adopt forced air cooling systems, which involve opening air inlets on the box and installing cooling fans to promote air convection. However, in actual industrial and outdoor environments, the air contains a large amount of suspended particulate matter (dust, sand, fibers, etc.). Traditional distribution boxes typically only have simple flat filters or louvers for dust prevention at their air inlets. After long-term operation, the following technical problems arise: As operating time increases, dust gradually accumulates on the flat plate filter, leading to increased air intake resistance, a sharp reduction in the effective airflow of the fan, and a drastic decrease in heat dissipation performance. To maintain heat dissipation, frequent manual shutdowns for cleaning or filter replacement are often required. In locations with high dust concentrations (such as mines, cement plants, and textile workshops), the maintenance cycle may be shortened to several days or even hours, significantly increasing operating and maintenance costs. Existing dust removal methods mostly involve removing the filter screen and then tapping or blowing it with air. This process not only requires interrupting equipment operation (affecting power supply continuity), but the shaken-off dust is also easily sucked back into the air intake by the residual airflow from the fan or natural airflow, creating a vicious cycle of "cleaning while sucking." Even with partially self-cleaning filter structures, the lack of effective airflow blocking during dust removal means that the shaken-off dust remains suspended near the air intake and quickly re-adheres under continuous fan operation, resulting in very limited actual cleaning effectiveness. Therefore, developing a dustproof distribution box that can ensure continuous heat dissipation, achieve efficient self-cleaning, and prevent secondary dust intake has significant engineering application value. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the background art, and to propose a distribution box with a dustproof function, including a distribution box body and a door rotatably installed at the front end of the distribution box body. A heat dissipation chamber is embedded in the rear end of the distribution box body. A filter chamber is set inside the heat dissipation chamber. A cooling fan is fixedly installed in the middle of the filter chamber. Sealing plates are fixedly installed on both sides and near the bottom of the filter chamber. Rubber frame gaskets are installed on the outer edges of the two sealing plates that are close to each other. An air intake channel is provided between the two sealing plates. A dust blocking component is set inside the air intake channel. An air intake chamber is connected to the bottom of the heat dissipation chamber. The air intake chamber is open inside and above. Frames are set on both sides inside the air intake chamber. Dust-collecting filter components are set inside the two frames. A connecting shaft is inserted through one end of the air intake chamber. The connecting shaft is located between the two frames and drives the dust-collecting filter components to vibrate through a rotating part outside the connecting shaft. A vision camera is connected to one side of the air intake chamber.

[0004] In the above technical solution, the dust blocking component further includes a flipping shaft, one end of which is rotatably inserted into the air intake channel, and a baffle is fitted inside the flipping shaft and located at the position of the air intake channel. A flipping reset component is symmetrically installed on the outer surface of one side of the baffle.

[0005] In the above technical solution, the flip-reset assembly further includes an arc-shaped telescopic rod, one end of which is connected to the outer surface of the baffle, and the other end of which is fixedly mounted with a vertical plate. The vertical plate is fixedly mounted on the upper surface of one of the sealing plates. A reset spring is fitted outside the arc-shaped telescopic rod, one end of which is connected to the outer surface of the baffle and the other end of which is connected to the top of the vertical plate. A circular gear is fixedly fitted outside one end of the flip shaft.

[0006] In the above technical solution, the dust filter assembly further includes two slide rods, which slide through the inner sides of the frame respectively. Vibration springs are fitted on the outside of the two slide rods. The upper ends of the two vibration springs abut against the top wall of the frame. A sliding plate is installed on the lower ends of the two slide rods together, and the lower ends of the two vibration springs abut against the sliding plate.

[0007] In the above technical solution, the bottom of the two slide plates are connected to an inverted V-shaped filter screen, and an inverted V-shaped abutment frame is fixedly installed above the inside of the air intake chamber. The lower edge of the inverted V-shaped filter screen is in movable contact with the inside of the inverted V-shaped abutment frame.

[0008] In the above technical solution, the rotating component further includes two sets of cams, which are respectively fixedly sleeved on both ends of the connecting shaft. The two sliding rods are connected by a common round rod at the top, and a pressing component is fixedly installed on the outside of the round rod.

[0009] In the above technical solution, the pressing component further includes a top plate, a universal ball bearing is installed on the lower surface of the top plate, the cam and the universal ball bearing are in rolling contact, one end of the connecting shaft is connected to a motor, the motor is fixedly installed on the inner wall of the heat dissipation chamber, a sector gear is fixedly sleeved on the connecting shaft near the motor, and the sector gear is meshed with the spur gear.

[0010] In the above technical solution, the bottom of the distribution box body is provided with four support feet, which are respectively installed at each corner of the bottom of the distribution box body.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention sets up a dust-blocking component and a dust-filtering component to work together. During the dust cleaning process, the baffle can temporarily close the air intake channel, effectively blocking the airflow and preventing the dust shaken off by vibration from being sucked back into the power distribution box by the suction of the cooling fan. This completely solves the vicious cycle problem of "cleaning and sucking at the same time" during the traditional filter cleaning process and significantly improves the self-cleaning effect.

[0012] 2. This invention utilizes the cam on the connecting shaft to periodically push the top plate above the slide rod, and with the reset action of the vibration spring, the inverted V-shaped filter screen generates high-frequency vibration, which automatically shakes off the dust attached to the surface of the filter screen without the need for manual disassembly and cleaning, greatly reducing maintenance costs, and is especially suitable for harsh environments with high dust concentration.

[0013] 3. The present invention adopts a structure that combines an inverted V-shaped filter screen with an inverted V-shaped support frame. The shaken dust automatically slides down the inclined surface of the filter screen to the bottom of the air intake chamber, avoiding the accumulation of dust at the edge of the filter screen. At the same time, the inverted V-shaped design increases the effective filtration area, ensuring smooth air intake and heat dissipation efficiency during long-term operation.

[0014] 4. This invention uses a vision camera to monitor the dust accumulation status of the inverted V-shaped filter in real time, and can intelligently control the start and stop of the motor. It only drives the cam and sector gear to move when dust removal is needed, which not only realizes the intermittent opening of the baffle and the self-cleaning of the filter, but also reduces unnecessary energy consumption, making the entire dust prevention system intelligent and automated. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the internal structure of the heat dissipation chamber of the present invention. Figure 4 This is a schematic diagram of the connection structure between the heat dissipation chamber, the filter chamber, and the air intake chamber of the present invention; Figure 5This is a schematic diagram of the connection structure between the filter chamber, air inlet chamber, and inverted V-shaped filter screen of the present invention; Figure 6 This is a schematic diagram of the connection structure between the filter compartment and the sealing plate, as well as the air intake channel and the baffle of the present invention; Figure 7 This is a schematic diagram of the disassembled structure between the inverted V-shaped filter and the inverted V-shaped abutment frame of the present invention; Figure 8 For the present invention Figure 3 Enlarged view of the structure at point A in the middle; Figure 9 For the present invention Figure 5 Enlarged view of the structure at point B in the middle.

[0016] In the diagram: 1. Main body of the distribution box; 2. Box door; 3. Support leg; 4. Heat dissipation chamber; 5. Air intake chamber; 6. Vision camera; 7. Cooling fan; 8. Filter chamber; 9. Baffle; 10. Motor; 11. Sector gear; 12. Inverted V-shaped filter screen; 13. Flip shaft; 14. Sealing plate; 15. Return spring; 16. Arc-shaped telescopic rod; 17. Circular gear; 18. Top plate; 19. Universal ball bearing; 20. Connecting shaft; 21. Vibration spring; 22. Frame; 23. Slide plate; 24. Cam; 25. Slide rod; 26. Inverted V-shaped abutment frame; 27. Round rod. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0019] like Figures 1-9The diagram shows a dustproof distribution box, comprising a main body 1 and a door 2 rotatably mounted on the front end of the main body 1. A heat dissipation chamber 4 is embedded inside the rear end of the main body 1, and a filter chamber 8 is installed inside the heat dissipation chamber 4. A cooling fan 7 is fixedly installed in the middle of the filter chamber 8. During operation, the cooling fan 7 starts, driving external cooling air into the main body 1 to dissipate heat. Sealing plates 14 are fixedly installed on both sides and near the bottom of the filter chamber 8. Rubber frame gaskets are installed on the outer edges of the two sealing plates 14 that are close to each other. An air intake channel is provided between the two sealing plates 14, and a dust-blocking component is installed inside the air intake channel. This dust-blocking component remains open during normal heat dissipation and can temporarily close the air intake channel when dust removal is required, thereby blocking airflow and preventing the re-inhalation of shaken-off dust. An air intake chamber 5 is connected to the bottom of the heat dissipation chamber 4. The air intake chamber 5 is open inside and above to allow for smooth airflow. Both sides of the unit are equipped with frames 22, and dust-collecting filter components are installed inside each frame 22. A connecting shaft 20 is inserted through one end of the air intake chamber 5, located between the two frames 22. The connecting shaft 20 drives the dust-collecting filter components to vibrate through a rotating component outside the connecting shaft 20. When the dust-collecting filter components vibrate, the dust attached to their surface is shaken off, achieving self-cleaning. A vision camera 6 is connected and installed on one side of the air intake chamber 5. The vision camera 6 monitors the dust accumulation level of the filter components in real time. When the dust accumulation reaches a set threshold, the dust cleaning operation is initiated. Through the coordinated operation of the above structures, this embodiment achieves automatic dust cleaning without interrupting heat dissipation, effectively avoiding secondary dust pollution and significantly reducing the frequency of manual maintenance.

[0020] The dust-blocking assembly includes a tilting shaft 13, one end of which is rotatably inserted into the air intake channel. A baffle 9 is fitted inside the tilting shaft 13 at the position of the air intake channel. A tilting reset assembly is symmetrically installed on the outer surface of one side of the baffle 9. The tilting reset assembly includes an arc-shaped telescopic rod 16, one end of which is connected to the outer surface of the baffle 9, and the other end of which is fixedly installed with a vertical plate. The vertical plate is fixedly installed on the upper surface of one of the sealing plates 14. A reset spring 15 is fitted outside the arc-shaped telescopic rod 16. One end of the reset spring 15 is connected to the outer surface of the baffle 9, and the other end is connected to the top of the vertical plate. A circular gear 17 is fixedly sleeved on the outside of one end of the tilting shaft 13. The dust-collecting filter assembly includes two sliding rods 25, which are slidably inserted into both sides of the inside of the frame 22. Vibration springs 21 are fitted outside both sliding rods 25. The upper ends of both vibration springs 21 abut against the top wall of the frame 22. A sliding plate 23 is installed at the lower end of the sliding rod 25. The lower ends of two vibration springs 21 abut against the sliding plate 23. The bottom of the two sliding plates 23 are connected to an inverted V-shaped filter 12. An inverted V-shaped abutment frame 26 is fixedly installed at the upper part of the air intake chamber 5. The lower edge of the inverted V-shaped filter 12 is in movable contact with the inside of the inverted V-shaped abutment frame 26. The rotating component includes two sets of cams 24. The two sets of cams 24 are respectively fixedly sleeved at both ends of the connecting shaft 20. The two sliding rods 25 are connected by a round rod 27 connected at the upper part. A pressing component is fixedly installed on the outside of the round rod 27. The pressing component includes a top plate 18. A universal ball bearing 19 is installed on the lower surface of the top plate 18. The cams 24 and the universal ball bearing 19 are in rolling contact. A motor 10 is connected to one end of the connecting shaft 20. The motor 10 is fixedly installed on the inner wall of the heat dissipation chamber 4. A sector gear 11 is fixedly sleeved on the connecting shaft 20 near the motor 10. The sector gear 11 is meshed with the round gear 17.

[0021] In this embodiment, when dust removal is required, the motor 10 drives the connecting shaft 20 to rotate. The sector gear 11 first meshes with the spur gear 17, driving the baffle 9 to flip from the vertical open position to the horizontal closed position. Subsequently, the sector gear 11 disengages, and after the pushing force of the slide rod 25 disappears, the vibration spring 21 releases energy, pushing the slide plate 23 and the inverted V-shaped filter screen 12 to quickly reset. This structure enables the inverted V-shaped filter screen 12 to vibrate and shake off dust, as well as the baffle 9 to block dust and prevent secondary entry of dust.

[0022] Subsequently, the cam 24 rotates continuously with the connecting shaft 20, periodically pushing the universal ball bearing 19, which in turn drives the top plate 18, the round rod 27, and the slide rod 25 to move upward. By setting the universal ball bearing 19, the frictional resistance of the cam 24 can be reduced. The upward movement of the slide rod 25 will compress the vibration spring 21. After the cam 24 rotates past the highest point, the vibration spring 21 drives the slide rod 25 to quickly return to its original position. This process is repeated, and the inverted V-shaped filter 12 generates high-frequency vibration, shaking off the dust attached to its surface. The design of the inverted V-shaped structure has multiple functions. First, the movable contact between the inverted V-shaped filter 12 and the inverted V-shaped abutment frame 26 forms a good seal, ensuring that all incoming air must be filtered by the inverted V-shaped filter 12. Second, the shaken-off dust will automatically slide down the inclined surface of the inverted V to the bottom of the air intake chamber 5, avoiding dust accumulation at the edges. Furthermore, the inverted V-shaped structure provides a larger filtration area under the same projected area, reducing airflow resistance and ensuring long-term heat dissipation efficiency.

[0023] The baffle 9 can seal the air intake channel during dust removal, completely blocking the airflow and preventing the dust shaken off by vibration from being sucked back by the cooling fan 7.

[0024] The bottom of the main body 1 of the distribution box is provided with four support feet 3, which are respectively installed at each corner of the bottom of the main body 1 of the distribution box. In this embodiment, the support foot 3 raises the bottom surface of the distribution box body 1 a certain height off the ground, so that a gap is formed between the bottom of the distribution box body 1 and the ground. On the one hand, it effectively prevents moisture, water accumulation or dust from the ground from entering the interior of the distribution box body 1 through the bottom gap, thereby enhancing the protection capability of the distribution box body 1 in outdoor, basement or humid environments. On the other hand, the raised space facilitates the insertion of forklift arms or handling tools, making it convenient for the transportation and on-site installation and positioning of the distribution box body 1.

[0025] Working principle: Under normal heat dissipation conditions, the cooling fan 7 starts, and external air enters through the open bottom of the air intake chamber 5. The airflow first passes through the inverted V-shaped filter 12, where dust is intercepted on the outer surface. The filtered air then rises into the filter chamber 8, at which point the baffle 9 is in the vertically open position, meaning the air intake channel is fully open. The air then passes through the air intake channel and the cooling fan 7 before entering the main body of the distribution box 1 to cool the electrical components, and finally exits through other heat dissipation vents of the main body of the distribution box 1.

[0026] The vision camera 6 continuously monitors the degree of dust accumulation on the surface of the inverted V-shaped filter 12. When the dust accumulation reaches a set threshold, the start motor 10 drives the connecting shaft 20 to rotate, and the sector gear 11 on the connecting shaft 20 rotates accordingly. The sector gear 11 meshes with the spur gear 17, driving the flip shaft 13 to rotate, thereby causing the baffle 9 to flip from the vertical position to the horizontal position, completely sealing the air intake channel between the two sealing plates 14. At this time, the return spring 15 and the arc-shaped telescopic rod 16 are stretched and stored. The connecting shaft 20 continues to rotate, and the cams 24 fixed at both ends periodically push the universal ball bearings 19 on the lower surface of the top plate 18. The top plate 18 drives the slide bar 25 to slide upward through the round rod 27, compressing the vibration spring 21; when the cam 24 rotates past the highest point, the vibration spring 21 releases energy, pushing the slide plate 23 and the inverted V-shaped filter 12 to quickly return to their original position downward. The continuous rotation of the cam 24 causes the inverted V-shaped filter 12 to generate high-frequency up-and-down vibrations, shaking off the dust adhering to the surface of the inverted V-shaped filter 12. Since the air intake channel has been closed by the baffle 9, the negative pressure generated by the cooling fan 7 cannot be transmitted to the lower part of the air intake chamber 5, and the shaken-off dust will not be sucked upward, but will naturally settle to the bottom of the air intake chamber 5 and be discharged by gravity.

[0027] After the dust removal process lasts for several seconds, the sector gear 11 and the spur gear 17 disengage, with only some teeth remaining on the sector gear 11. Under the elastic force of the return spring 15, the arc-shaped telescopic rod 16 retracts, pulling the baffle 9 back to a vertical position, and the air intake channel reopens. At the same time, the motor 10 stops rotating, the cam 24 no longer pushes the top plate 18, the inverted V-shaped filter 12 remains stationary at the balance position of the vibration spring 21, and the electrical box returns to normal heat dissipation. Through the periodic operation, automatic cleaning and dust removal can be achieved. While ensuring continuous ventilation and heat dissipation of the main body of the distribution box 1, it effectively prevents dust from re-entering and significantly extends the service life of the inverted V-shaped filter 12.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A dustproof distribution box, comprising a distribution box body (1) and a door (2) rotatably mounted on the front end of the distribution box body (1), characterized in that, The main body (1) of the distribution box has a heat dissipation chamber (4) embedded in its rear end. The heat dissipation chamber (4) has a filter chamber (8) inside. A cooling fan (7) is fixedly installed in the middle of the filter chamber (8). Sealing plates (14) are fixedly installed on both sides and near the bottom of the filter chamber (8). Rubber frame pads are installed on the outer edges of the two sealing plates (14) that are close to each other. An air intake channel is provided between the two sealing plates (14). A dust-blocking component is provided inside the air intake channel. The bottom of the heat dissipation chamber (4) is connected to... There is an air intake chamber (5), the interior and top of which are open. Frames (22) are provided on both sides of the interior of the air intake chamber (5). Dust-collecting filter components are provided inside both frames (22). A connecting shaft (20) is inserted through one end of the interior of the air intake chamber (5). The connecting shaft (20) is located between the two frames (22) and drives the dust-collecting filter components to vibrate through the rotating parts outside the connecting shaft (20). A vision camera (6) is connected and installed on one side of the interior of the air intake chamber (5). The dust-blocking assembly includes a flip shaft (13), one end of which is rotatably inserted into the air intake channel, and a baffle (9) is fitted inside the flip shaft (13) and located at the air intake channel position. A flip reset assembly is symmetrically installed on one side of the outer surface of the baffle (9). The flip-reset assembly includes an arc-shaped telescopic rod (16), one end of which is connected to the outer surface of the baffle (9), and the other end of which is fixedly mounted with a vertical plate. The vertical plate is fixedly mounted on the upper surface of one of the sealing plates (14). A reset spring (15) is fitted on the outside of the arc-shaped telescopic rod (16). One end of the reset spring (15) is connected to the outer surface of the baffle (9), and the other end is connected to the top of the vertical plate. A circular gear (17) is fixedly fitted on the outside of one end of the flip shaft (13). The dust filter assembly includes two slide rods (25), which slide through the inside of the frame (22) on both sides. Vibration springs (21) are fitted on the outside of the two slide rods (25). The upper ends of the two vibration springs (21) abut against the top wall of the frame (22). The lower ends of the two slide rods (25) are fitted with a sliding plate (23), and the lower ends of the two vibration springs (21) abut against the sliding plate (23).

2. A distribution box with dustproof function according to claim 1, characterized in that, The bottom of the two slide plates (23) are connected to an inverted V-shaped filter (12). An inverted V-shaped abutment frame (26) is fixedly installed inside the air intake chamber (5). The lower edge of the inverted V-shaped filter (12) is in contact with the inside of the inverted V-shaped abutment frame (26).

3. A distribution box with dustproof function according to claim 1, characterized in that, The rotating component includes two sets of cams (24), which are respectively fixedly sleeved on both ends of the connecting shaft (20). The two slide rods (25) are connected by a round rod (27) connected above. A pressing component is fixedly installed on the outside of the round rod (27).

4. A distribution box with dustproof function according to claim 3, characterized in that, The pressing component includes a top plate (18), on the lower surface of the top plate (18) is mounted a universal ball bearing (19), the cam (24) and the universal ball bearing (19) are in rolling contact, one end of the connecting shaft (20) is connected to a motor (10), the motor (10) is fixedly mounted on the inner wall of the heat dissipation chamber (4), a sector gear (11) is fixedly sleeved on the connecting shaft (20) near the motor (10), and the sector gear (11) is meshed with a spur gear (17).

5. A distribution box with dustproof function according to claim 1, characterized in that, The bottom of the main body (1) of the distribution box is provided with four support feet (3), and the four support feet (3) are respectively installed at each corner of the bottom of the main body (1) of the distribution box.

Images