Low-voltage switchgear assembly

Abstract

The invention belongs to the technical field of low-voltage switch equipment, and particularly discloses low-voltage complete switch equipment which comprises a low-voltage cabinet body, a top groove is formed in the top of the low-voltage cabinet body, a rainwater collecting device is arranged in the top groove, and a control box is arranged in the middle of the interior of the low-voltage cabinet body. A filter screen plate is arranged on the inner wall of one side of the low-voltage cabinet body, and a shutter air bellow is arranged on the inner wall of the other side of the low-voltage cabinet body. When it rains, the rainwater collecting device triggers the switching assembly to work, the rotating direction of the transmission shaft is changed, then airflow is blown outwards from the interior of a filter screen cover, and the rainwater collecting device is used for collecting rainwater; dust on the filter screen cover can be cleaned through reverse flowing of airflow, meanwhile, when the rainwater collecting device triggers the switching assembly to work, collected rainwater can be guided into a strip-shaped water spraying pipe on the cleaning assembly so that the rainwater can be sprayed to the filter screen cover, and the filter screen cover can be further cleaned in cooperation with the airflow blowing in the reverse direction.

Description

Technical Field

[0001] This invention relates to the field of low-voltage switchgear technology, and more particularly to a low-voltage switchgear assembly. Background Technology

[0002] High and low voltage switchgear is an indispensable and important part of the power system. It mainly consists of high-voltage switchgear, low-voltage switchgear and transformers. These devices play a vital role in the power generation, transmission, transformation and distribution links of the power system. They can not only realize the rational distribution of electrical energy, distribute high-voltage power to various power consumption areas, and then distribute electrical energy to different electrical equipment through low-voltage switchgear, but also control and protect the power system. When a circuit fault occurs, such as a short circuit or overload, the protection devices in the switchgear will act quickly to cut off the faulty circuit.

[0003] Currently, when low-voltage switchgear is used in the open air in arid mountainous areas, it is difficult for maintenance personnel to perform basic maintenance. Since the transformer components inside the low-voltage switchgear need to dissipate heat, the airflow delivered to the switchgear for heat dissipation needs to be filtered. However, the impurities produced after filtration can easily accumulate on the filter screen, causing its permeability to decrease and affecting the heat dissipation efficiency inside the switchgear. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a low-voltage switchgear assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-voltage switchgear assembly, comprising a low-voltage cabinet, a top groove being provided on the top of the low-voltage cabinet, a rainwater collection device being provided inside the top groove, a control box being provided in the middle of the interior of the low-voltage cabinet, a filter screen being provided on one inner wall of the low-voltage cabinet, a louvered air box being provided on the other inner wall of the low-voltage cabinet, an air duct being fixed on the other side of the low-voltage cabinet, the air duct penetrating into the interior of the louvered air box, a filter screen being provided at one end of the air duct, a protective cover being provided between the top and bottom surfaces of the interior of the air duct, a switching assembly being provided inside the protective cover, and a cleaning device being provided inside the air duct; A cable tray is fixed inside the low-voltage cabinet near the rear edge. Multiple mounting brackets are fixed at equal intervals inside the rear side of the low-voltage cabinet. The louvered air box is opposite to the filter plate. A protective door is rotatably installed on the front side of the low-voltage cabinet near one edge.

[0006] Preferably, a transmission groove is provided on one inner wall of the low-pressure cabinet below the louvered air box. A pulley is provided inside the transmission groove. A rotating shaft is fixed to the top of the pulley. The top of the rotating shaft slides through the interior of the air duct and is located in the protective cover. A bevel gear is fixed to the top of the rotating shaft and is located inside the protective cover.

[0007] Preferably, the rainwater collection device includes a water storage box, a rectangular groove is formed between the inner walls of the top groove, the top edge of the water storage box is bent, and the top edge of the water storage box is slidably sealed to the inner wall of the rectangular groove. Springs are fixed at the four corners of the bottom of the water storage box, and the bottoms of the multiple springs are fixed to the inner bottom surface of the top groove.

[0008] Preferably, a reciprocating groove is formed on the inner bottom surface of the top groove near one edge, and an inlet is formed on the top of the air duct that extends into the interior. The bottom of the reciprocating groove is connected to the inlet. A reciprocating plate is slidably arranged between the inner walls of the reciprocating groove. The bottom of the reciprocating plate is located inside the inlet and extends into the protective cover. A drainage channel is formed inside the reciprocating plate. The top of the drainage channel extends into the interior of the water storage box, and the bottom of the drainage channel extends into the outside of the reciprocating plate. The bottom end of the drainage channel is slidably sealed and fitted to the inner wall of the reciprocating groove near the bottom edge. A strong magnetic plate is fixed on the bottom of the reciprocating plate near one edge, and the bottom of the reciprocating plate near the other edge is set in an inclined shape.

[0009] Preferably, the switching assembly includes a connecting ring, and support plates are fixed on both sides of the inner top surface of the air duct near the inlet. Annular seats are fixed at the bottom of the two support plates. The two annular seats are located inside the protective cover and near the two side edges. A drive shaft is rotatably arranged between the inner walls of the two annular seats. One end of the drive shaft slides through to one side of the filter cover.

[0010] Preferably, each of the two annular seats has an annular opening on one side. A first bevel gear ring is rotatably disposed between the inner walls of one of the annular openings, and a second bevel gear ring is rotatably disposed between the inner walls of the other annular opening. The first and second bevel gear rings are slidably fitted onto the outer surface of the transmission shaft, and both the first and second bevel gear rings mesh with bevel gears.

[0011] Preferably, the opposite sides of the first bevel gear ring and the second bevel gear ring are both concave, and the opposite sides of the first bevel gear ring and the second bevel gear ring are provided with multiple slots at equal intervals along the circumferential direction. The outer surface of the drive shaft is provided with four guide grooves at equal intervals along the circumferential direction. The connecting ring is slidably fitted onto the outer surface of the drive shaft, and the connecting ring is located between the opposite sides of the first bevel gear ring and the second bevel gear ring. Multiple locking blocks are fixed at equal intervals along the circumferential direction on both outer surfaces of the connecting ring, and the multiple locking blocks are correspondingly engaged in the slots. The inner side of the connecting ring is correspondingly slidably engaged in the guide grooves.

[0012] Preferably, two sealing rings are fixed on the outer surface of the drive shaft near the end edge, and the two sealing rings slide and seal against the inner wall of one of the annular seats. A lever plate is fixed on the top of the connecting ring. The top of the lever plate is inclined and faces the inclined surface of the bottom of the reciprocating plate. The strong magnetic plate extends to one side of the lever plate. Multiple vortex blades are fixed at equal intervals along the circumferential direction on the outer surface of the drive shaft. All of the multiple vortex blades are located on one side of the protective cover.

[0013] Preferably, the cleaning component includes multiple strip-shaped water spray pipes, which are equidistantly fixed on the outer surface of the drive shaft along the circumferential direction and are all located inside the filter screen. Multiple scrapers are equidistantly fixed on the outer surface of the drive shaft near one end edge along the circumferential direction. The scrapers are all located outside the filter screen, and one side of the outer surface of the scraper is in contact with the outer surface of the filter screen.

[0014] Preferably, an annular cavity is formed inside the drive shaft near one end edge. The inner wall of the annular cavity is provided with multiple filter screens, which extend to the outer surface of the drive shaft and are located inside one of the annular seats. Two sealing rings are located on both sides of the filter screens. Multiple bridging channels are formed on one side of the inner wall of the annular cavity, and each of the bridging channels is connected to the bottom end of the strip spray pipe. A bent channel is formed inside one of the support plates. The bottom end of the bent channel extends into the interior of one of the annular seats and is opposite to the multiple filter screens. The top end of the bent channel extends into the interior of the reciprocating groove and is connected to the bottom end of the drainage channel.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the low-voltage cabinet is installed in a remote, arid area for field use, the cleaning component scrapes off the dust filtered on the filter screen when it is not raining. At this time, the switching component will not be triggered. When it rains, rainwater is collected by a rainwater collection device. When a certain amount of rainwater is collected, the rainwater collection device triggers the switching component to work, causing the airflow to reverse and clean the dust on the filter screen. At the same time, when the rainwater collection device triggers the switching component, it also guides the collected rainwater into the strip spray pipe on the cleaning component, so that it can spray the rainwater onto the filter screen. Combined with the reverse airflow, the filter screen can be further cleaned. 2. When the rainwater collection device in this invention is working, it collects rainwater through a water storage box. As more rainwater is collected inside the water storage box, the weight inside the water storage box also increases, which in turn compresses the spring downward. During the compression process, the reciprocating plate will slide downward to the reciprocating groove. Through the interaction between the inclined surface at the bottom of the reciprocating plate and the inclined surface at the top of the dial plate, the switching component is driven to work. 3. When the switching component is working in this invention, the rainwater collection device does not work when it is not raining. At this time, the strong magnetic plate attracts the dial plate to the second bevel gear ring, which in turn drives the connecting ring to slide towards the second bevel gear ring. This causes multiple locking blocks on one side of the connecting ring to engage in the slots on the second bevel gear ring. At this time, the connecting ring and the second bevel gear ring are connected. Since the bevel gear meshes with the first bevel gear ring and the second bevel gear ring, the connecting ring can be driven to rotate through the second bevel gear ring, causing the transmission shaft to rotate clockwise. At this time, the first bevel gear ring is in an unloaded idling state. When the transmission shaft rotates, the airflow is drawn from outside the filter screen to inside the air duct through the vortex blades, and then flows evenly into the low-pressure cabinet through the louvered air box. 4. When the cleaning component of this invention is working, if the rainwater collection device is not triggered, the drive shaft drives the scraper to clean the dust on the outside of the filter screen. When the rainwater collection device is triggered, the switching component moves the airflow from the duct to the outside of the filter screen, and the collected rainwater is sprayed out from the inside of the filter screen to the outside through the strip spray pipe. At this time, the airflow in the reverse flow channel can further enhance the cleaning of the filter screen. At the same time, it can wash and clean the dust patches or some dead corners generated between the scraper and the filter screen when the scraper removes the dust on the filter screen. Attached Figure Description

[0016] Figure 1 This invention provides a three-dimensional structural diagram of one side of a low-voltage switchgear assembly; Figure 2 This invention provides a three-dimensional structural diagram of the other side of a low-voltage switchgear assembly; Figure 3 This invention provides a cross-sectional perspective view of a low-voltage switchgear assembly. Figure 4 This invention provides a cross-sectional three-dimensional structural diagram of the low-voltage cabinet in a low-voltage switchgear assembly; Figure 5 This invention provides a side-view perspective of the duct structure in a low-voltage switchgear assembly. Figure 6 This invention provides a three-dimensional structural diagram of the ductwork in a low-voltage switchgear assembly from another side. Figure 7 This invention provides a cross-sectional three-dimensional structural diagram of the duct in a low-voltage switchgear assembly; Figure 8 This invention provides a cross-sectional perspective view of the switching components and cleaning device in a low-voltage switchgear assembly. Figure 9 For the present invention Figure 3 A magnified view of a portion of point A in the middle; Figure 10 For the present invention Figure 7 A magnified view of a portion of point B in the middle.

[0017] In the diagram: 1. Low-voltage cabinet; 2. Top groove; 3. Water storage box; 4. Protective door; 5. Control box; 6. Filter screen; 7. Cable tray; 8. Mounting bracket; 9. Louvered air box; 10. Air duct; 11. Filter cover; 12. Rectangular groove; 13. Spring; 14. Reciprocating groove; 15. Reciprocating plate; 16. Drainage channel; 17. Transmission groove; 18. Pulley; 19. Protective cover; 20. Rotating shaft; 21. Socket; 22. Transmission shaft 23. Scraper; 24. Bent flow channel; 25. Strip spray pipe; 26. Vortex blade; 27. Annular seat; 28. Annular cavity; 29. ​​Annular opening; 31. Connecting ring; 32. Bevel gear; 33. Support plate; 34. Paddle plate; 35. First bevel gear ring; 36. Sealing ring; 37. Bridging flow channel; 38. Filter screen opening; 39. Guide groove; 40. Slot; 41. Block; 42. Second bevel gear ring; 43. Strong magnetic plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-10The present invention provides a technical solution: a low-voltage switchgear assembly, including a low-voltage cabinet 1, a top groove 2 on the top of the low-voltage cabinet 1, a rainwater collection device inside the top groove 2, a control box 5 located in the middle of the interior of the low-voltage cabinet 1, a filter screen 6 on one inner wall of the low-voltage cabinet 1, a louvered air box 9 on the other inner wall of the low-voltage cabinet 1, an air duct 10 fixed on the other side of the low-voltage cabinet 1, the air duct 10 penetrating into the interior of the louvered air box 9, a filter screen cover 11 at one end of the air duct 10, a protective cover 19 between the top and bottom surfaces of the interior of the air duct 10, a switching component inside the protective cover 19, and a cleaning device inside the air duct 10; A cable tray 7 is fixed inside the low-pressure cabinet 1 near the rear edge. Multiple mounting brackets 8 are fixed at equal intervals inside the rear side of the low-pressure cabinet 1. A louvered air box 9 is opposite to the filter screen 6. A protective door 4 is rotatably installed on the front side of the low-pressure cabinet 1 near one edge. A transmission groove 17 is opened on one inner wall of the low-pressure cabinet 1 below the louvered air box 9. A pulley 18 is installed inside the transmission groove 17. A rotating shaft 20 is fixed on the top of the pulley 18. The top of the rotating shaft 20 slides through the air duct 10 and is located in the protective cover 19. A bevel gear 32 is fixed on the top of the rotating shaft 20 and is located inside the protective cover 19.

[0020] The effect achieved is that when the low-pressure cabinet 1 is installed in a remote, arid area for field use, the transmission device drives the pulley 18 to rotate during operation, which in turn drives the rotating shaft 20 and the bevel gear 32 to rotate. The bevel gear 32 provides driving force to the cleaning component, and in conjunction with the switching component, the working mode of the cleaning component can be changed. When there is no rain, the cleaning component scrapes off the dust filtered on the filter screen 11 during operation, and the switching component will not be triggered at this time. When it rains, the rainwater collection device collects rainwater. When a certain amount of rainwater is collected, the rainwater collection device triggers the switching component to change the rotation direction of the transmission shaft 22, thereby causing the airflow to blow from the inside of the filter screen 11 to the outside. The reverse airflow can clean the dust on the filter screen 11. At the same time, when the rainwater collection device triggers the switching component, it also guides the collected rainwater into the strip spray pipe 25 on the cleaning component, so that it can spray the rainwater onto the filter screen 11. In conjunction with the reverse airflow, the filter screen 11 can be further cleaned.

[0021] like Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 9As shown, the rainwater collection device includes a water storage box 3, a rectangular groove 12 formed between the inner walls of the top trough 2, a bent top edge of the water storage box 3, and a sliding seal between the top edge of the water storage box 3 and the inner wall of the rectangular groove 12. Springs 13 are fixed at the four corners of the bottom of the water storage box 3, and the bottoms of multiple springs 13 are fixed to the inner bottom surface of the top trough 2. A reciprocating groove 14 is formed near one edge of the inner bottom surface of the top trough 2. An insertion port 21 extending into the top of the duct 10 is provided, and the bottom of the reciprocating groove 14 is connected to the insertion port 21. A reciprocating plate 15 is slidably disposed between the inner walls of the reciprocating trough 14. The bottom of the reciprocating plate 15 is located inside the inlet 21 and extends into the protective cover 19. A drainage channel 16 is provided inside the reciprocating plate 15. The top of the drainage channel 16 extends into the interior of the water storage box 3, and the bottom of the drainage channel 16 extends into the outer side of the reciprocating plate 15. The bottom end of the drainage channel 16 is slidably sealed and fitted with the inner wall of the reciprocating trough 14 near the bottom edge. A strong magnetic plate 43 is fixed at the bottom of the reciprocating plate 15 near one side edge, and the bottom of the reciprocating plate 15 near the other side edge is set in an inclined shape.

[0022] The effect achieved is that rainwater is collected by the water storage box 3. As more rainwater is collected inside the water storage box 3, the weight inside the water storage box 3 will also increase, thereby compressing the spring 13 downward. During the compression process, the reciprocating plate 15 will slide downward towards the reciprocating groove 14. Through the interaction between the inclined surface at the bottom of the reciprocating plate 15 and the inclined surface at the top of the dial plate 34, the switching component is driven to work. A strong magnetic plate 43 is set at the bottom of the reciprocating plate 15. The magnetic attraction force of the strong magnetic plate 43 can provide a clamping force for the docking between the connecting ring 31 and the second conical tooth ring 42, making the docking transmission more stable and preventing axial displacement during transmission.

[0023] like Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the switching assembly includes a connecting ring 31. Support plates 33 are fixed to both sides of the inner top surface of the duct 10 near the inlet 21. Annular seats 27 are fixed to the bottom of each support plate 33. Both annular seats 27 are located inside the protective cover 19, near the edges. A drive shaft 22 is rotatably mounted between the inner walls of the two annular seats 27. One end of the drive shaft 22 slides through to one side of the filter screen 11. Annular openings 29 are provided on opposite sides of the two annular seats 27. A first bevel gear ring 35 is rotatably mounted between the inner walls of one annular opening 29, and a second bevel gear ring 42 is rotatably mounted between the inner walls of the other annular opening 29. The first bevel gear ring 35 and the second bevel gear ring 42 are correspondingly slidably fitted onto the outer surface of the drive shaft 22. Both the first bevel gear ring 35 and the second bevel gear ring 42 mesh with a bevel gear 32. The opposite sides of the first bevel gear ring 35 and the second bevel gear ring 42 are concave, and the opposite sides of the first bevel gear ring 35 and the second bevel gear ring 42 are circumferentially oriented. Multiple slots 40 are equidistantly provided, and four guide grooves 39 are equidistantly provided along the circumferential direction on the outer surface of the drive shaft 22. The connecting ring 31 is slidably fitted onto the outer surface of the drive shaft 22, and the connecting ring 31 is located between the opposite sides of the first bevel gear ring 35 and the second bevel gear ring 42. Multiple locking blocks 41 are fixed equidistantly along the circumferential direction on both sides of the outer surface of the connecting ring 31, and the multiple locking blocks 41 are correspondingly engaged in the slots 40. The inner side of the connecting ring 31 is correspondingly slidably engaged in the guide grooves 39. Two sealing rings 36 are fixed on the outer surface of the drive shaft 22 near the end edge. The two sealing rings 36 slide and seal against the inner wall of one of the annular seats 27. A lever plate 34 is fixed on the top of the connecting ring 31. The top of the lever plate 34 is inclined and faces the inclined surface of the bottom of the reciprocating plate 15. The strong magnetic plate 43 extends to one side of the lever plate 34. Multiple vortex blades 26 are fixed at equal intervals along the circumferential direction on the outer surface of the drive shaft 22. All multiple vortex blades 26 are located on one side of the protective cover 19.

[0024] The effect achieved is as follows: when there is no rain, the rainwater collection device does not work. At this time, the strong magnetic plate 43 attracts the lever 34 to the second bevel gear ring 42, which in turn drives the connecting ring 31 to slide towards the second bevel gear ring 42. This causes multiple locking blocks 41 on one side of the connecting ring 31 to engage with the slots 40 on the second bevel gear ring 42. At this time, the connecting ring 31 and the second bevel gear ring 42 are connected. Since the bevel gear 32 meshes with the first bevel gear ring 35 and the second bevel gear ring 42, the second bevel gear ring 42 can drive the connecting ring 31 to rotate, causing the drive shaft 22 to rotate clockwise. At this time, the first bevel gear ring 35 is in an unloaded idling state. When the drive shaft 22 rotates, the vortex blades 26 draw airflow from outside the filter screen 11 into the air duct 10, and then the airflow flows evenly into the low-pressure cabinet 1 through the louvered air box 9. When it rains, after the rainwater collection device collects a certain amount of rainwater, it will drive the reciprocating plate 15. The reciprocating plate 15 slides downwards into the reciprocating groove 14. At this time, the inclined surface at the bottom of the reciprocating plate 15 interacts with the inclined surface at the top of the deflector plate 34, causing the deflector plate 34 to be pushed towards the first bevel ring 35. This causes the connecting ring 31 to slide towards the first bevel ring 35. At this time, multiple locking blocks 41 on the connecting ring 31 located on the side of the second bevel ring 42 will slide out from the locking grooves 40 on the second bevel ring 42, releasing the constraint between the connecting ring 31 and the second bevel ring 42. The multiple locking blocks 41 on the connecting ring 31 located on the side of the first bevel ring 35 will be engaged in the corresponding locking grooves 40 on the first bevel ring 35, so that the connecting ring 31 and the first bevel ring 35 are mutually constrained. At this time, the first bevel ring 35 drives the connecting ring 31 to rotate, causing the transmission shaft 22 to rotate counterclockwise. At this time, the second bevel ring 42 is in an unloaded idling state. When the transmission shaft 22 rotates, it drives the vortex blades 26 to blow the airflow from the duct 10 to the outside of the filter screen 11, thus cleaning the dust on the filter screen 11.

[0025] like Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the cleaning assembly includes multiple strip-shaped water spray pipes 25, which are equidistantly fixed to the outer surface of the drive shaft 22 along the circumferential direction and are all located inside the filter screen cover 11. Multiple scrapers 23 are equidistantly fixed to the outer surface of the drive shaft 22 near one end edge along the circumferential direction. The scrapers 23 are all located outside the filter screen cover 11, and one side of the outer surface of the scrapers 23 is in contact with the outer surface of the filter screen cover 11. An annular cavity 28 is formed inside the drive shaft 22 near one end edge. Multiple filter screen openings 38 are provided on the inner wall of the annular cavity 28, and the multiple filter screen openings 38 pass through... The two sealing rings 36 are located on the outer surface of the drive shaft 22 and inside one of the annular seats 27. The two sealing rings 36 are located on both sides of the filter screen opening 38. Multiple bridging channels 37 are opened on one side of the inner wall of the annular cavity 28. The multiple bridging channels 37 are connected to the bottom end of the strip spray pipe 25. A bent channel 24 is opened inside one of the support plates 33. The bottom end of the bent channel 24 passes through the interior of one of the annular seats 27 and is opposite to the multiple filter screen openings 38. The top end of the bent channel 24 passes through the interior of the reciprocating groove 14 and is connected to the bottom end of the drainage channel 16.

[0026] The effect achieved is that when the rainwater collection device is not triggered, the drive shaft 22 drives the scraper 23 to clean the dust on the outside of the filter screen 11. When the rainwater collection device is triggered, the airflow is blown from the air duct 10 to the outside of the filter screen 11 along with the action of the switching component, and the collected rainwater is sprayed from the inside of the filter screen 11 to the outside through the strip spray pipe 25. At this time, the airflow in the reverse flow channel can further enhance the cleaning of the filter screen 11. At the same time, when the scraper 23 scrapes the dust off the filter screen 11, the dust patches or some dead corners generated between the scraper 23 and the filter screen 11 can be rinsed and cleaned.

[0027] Working principle: When using this device, the transmission device drives the pulley 18 to rotate, which in turn drives the rotating shaft 20 and the bevel gear 32 to rotate. The bevel gear 32 provides driving force to the cleaning component, and the working mode of the cleaning component can be changed in conjunction with the switching component. When there is no rain, the rainwater collection device does not work. At this time, the strong magnetic plate 43 attracts the dial plate 34 to the second bevel gear ring 42, which in turn drives the connecting ring 31 to slide towards the second bevel gear ring 42. This causes multiple locking blocks 41 on one side of the connecting ring 31 to engage inside the locking grooves 40 on the second bevel gear ring 42. At this time, the connecting ring 31 and the second bevel gear ring 42 are connected, and because of this... The bevel gear 32 meshes with the first bevel gear ring 35 and the second bevel gear ring 42. Therefore, the second bevel gear ring 42 can drive the connecting ring 31 to rotate, causing the drive shaft 22 to rotate clockwise. At this time, the first bevel gear ring 35 is in an unloaded, idle state. When the drive shaft 22 rotates, the vortex blades 26 draw airflow from outside the filter screen 11 into the air duct 10, and then the airflow is evenly distributed into the low-pressure cabinet 1 through the louvered fan box 9. During rain, rainwater is collected by the water storage box 3. As more rainwater is collected in the water storage box 3, the weight inside the water storage box 3 increases, thus compressing the spring 13 downwards. During the compression process, the spring 13 is driven downwards. The reciprocating plate 15 slides downwards towards the reciprocating groove 14. At this time, the inclined surface at the bottom of the reciprocating plate 15 interacts with the inclined surface at the top of the dial plate 34, causing the dial plate 34 to move towards the first bevel ring 35. This causes the connecting ring 31 to slide towards the first bevel ring 35. Simultaneously, multiple locking blocks 41 on the connecting ring 31 located on the side of the second bevel ring 42 slide out of the slots 40 on the second bevel ring 42, releasing the constraint between the connecting ring 31 and the second bevel ring 42. The multiple locking blocks 41 on the connecting ring 31 located on the side of the first bevel ring 35 then engage with the corresponding slots 40 on the first bevel ring 35, thus constraining the connecting ring 31 and the first bevel ring 35. The first bevel ring 35 drives the connecting ring 31 to rotate, causing the drive shaft 22 to rotate counterclockwise. At this time, the second bevel ring 42 is in an unloaded idling state. When the drive shaft 22 rotates, it drives the vortex blades 26 to blow airflow from the duct 10 to the outside of the filter screen 11, which can clean the dust on the filter screen 11. The collected rainwater is also sprayed out from the inside of the filter screen 11 to the outside through the strip spray pipe 25. At this time, the airflow in the reverse flow channel can further enhance the cleaning of the filter screen 11. At the same time, when the scraper 23 scrapes the dust off the filter screen 11, the dust patches or some dead corners generated between the scraper 23 and the filter screen 11 can be rinsed and cleaned.

[0028] 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. A low-voltage switchgear assembly, characterized in that, The system includes a low-pressure cabinet (1), with a top groove (2) on the top of the cabinet (1). A rainwater collection device is installed inside the top groove (2). A control box (5) is installed in the middle of the interior of the low-pressure cabinet (1). A filter screen (6) is installed on one side of the inner wall of the low-pressure cabinet (1). A louvered air box (9) is installed on the other side of the low-pressure cabinet (1). An air duct (10) is fixed on the other side of the low-pressure cabinet (1). The air duct (10) extends into the interior of the louvered air box (9). A filter screen cover (11) is installed at one end of the air duct (10). A protective cover (19) is installed between the top and bottom surfaces of the air duct (10). A switching component is installed inside the protective cover (19). A cleaning device is installed inside the air duct (10). The low-pressure cabinet (1) has a cable tray (7) fixed inside near the rear edge. Multiple mounting brackets (8) are fixed at equal intervals inside the rear side of the low-pressure cabinet (1). The louvered air box (9) is opposite to the filter plate (6). A protective door (4) is rotatably installed on the front side of the low-pressure cabinet (1) near one edge.

2. The low-voltage switchgear assembly according to claim 1, characterized in that: A transmission groove (17) is provided on one side of the inner wall of the low-pressure cabinet (1) below the louvered air box (9). A pulley (18) is provided inside the transmission groove (17). A rotating shaft (20) is fixed on the top of the pulley (18). The top of the rotating shaft (20) slides through the air duct (10) and is located in the protective cover (19). A bevel gear (32) is fixed on the top of the rotating shaft (20). The bevel gear (32) is located inside the protective cover (19).

3. A low-voltage switchgear assembly according to claim 2, characterized in that: The rainwater collection device includes a water storage box (3), a rectangular groove (12) is provided between the inner walls of the top groove (2), the top edge of the water storage box (3) is bent, and the top edge of the water storage box (3) is slidably sealed to the inner wall of the rectangular groove (12). The bottom of the water storage box (3) is fixed with springs (13) at the four corners, and the bottom of the multiple springs (13) is fixed to the inner bottom surface of the top groove (2).

4. A low-voltage switchgear assembly according to claim 3, characterized in that: A reciprocating groove (14) is provided on the inner bottom surface of the top groove (2) near one edge. A through-hole (21) is provided on the top of the air duct (10). The bottom of the reciprocating groove (14) is connected to the through-hole (21). A reciprocating plate (15) is slidably arranged between the inner walls of the reciprocating groove (14). The bottom of the reciprocating plate (15) is located inside the through-hole (21) and extends into the protective cover (19). The interior of the reciprocating plate (15) is open A drainage channel (16) is provided. The top of the drainage channel (16) extends into the interior of the water storage box (3), and the bottom of the drainage channel (16) extends into the outside of the reciprocating plate (15). The bottom end of the drainage channel (16) slides and seals against the inner wall of the reciprocating groove (14) near the bottom edge. A strong magnetic plate (43) is fixed to the bottom of the reciprocating plate (15) near one side edge, and the bottom of the reciprocating plate (15) near the other side edge is set in an inclined shape.

5. A low-voltage switchgear assembly according to claim 4, characterized in that: The switching assembly includes a connecting ring (31). Support plates (33) are fixed on both sides of the inner top surface of the air duct (10) near the inlet (21). Annular seats (27) are fixed at the bottom of the two support plates (33). The two annular seats (27) are located inside the protective cover (19) and near the edges on both sides. A drive shaft (22) is rotatably arranged between the inner walls of the two annular seats (27). One end of the drive shaft (22) slides through to one side of the filter screen cover (11).

6. A low-voltage switchgear assembly according to claim 5, characterized in that: An annular opening (29) is provided on one side of each of the two annular seats (27). A first bevel gear ring (35) is rotatably disposed between the inner walls of one of the annular openings (29), and a second bevel gear ring (42) is rotatably disposed between the inner walls of the other annular opening (29). The first bevel gear ring (35) and the second bevel gear ring (42) are slidably fitted on the outer surface of the transmission shaft (22), and the first bevel gear ring (35) and the second bevel gear ring (42) are meshed with the bevel gear (32).

7. A low-voltage switchgear assembly according to claim 6, characterized in that: The first bevel ring (35) and the second bevel ring (42) are both concave on opposite sides. The first bevel ring (35) and the second bevel ring (42) are both provided with multiple slots (40) at equal intervals along the circumferential direction on opposite sides. The outer surface of the drive shaft (22) is provided with four guide grooves (39) at equal intervals along the circumferential direction. The connecting ring (31) is slidably fitted on the outer surface of the drive shaft (22), and the connecting ring (31) is located between the opposite sides of the first bevel ring (35) and the second bevel ring (42). Multiple locking blocks (41) are fixed at equal intervals along the circumferential direction on both outer surfaces of the connecting ring (31). The multiple locking blocks (41) are correspondingly engaged in the slots (40). The inner side of the connecting ring (31) is correspondingly slidably engaged in the guide grooves (39).

8. A low-voltage switchgear assembly according to claim 7, characterized in that: Two sealing rings (36) are fixed on the outer surface of the drive shaft (22) near the end edge. The two sealing rings (36) slide and seal against the inner wall of one of the annular seats (27). A lever plate (34) is fixed on the top of the connecting ring (31). The top of the lever plate (34) is inclined and faces the inclined surface of the bottom of the reciprocating plate (15). The strong magnetic plate (43) extends to one side of the lever plate (34). Multiple vortex blades (26) are fixed at equal intervals along the circumferential direction on the outer surface of the drive shaft (22). The multiple vortex blades (26) are all located on one side of the protective cover (19).

9. A low-voltage switchgear assembly according to claim 8, characterized in that: The cleaning assembly includes multiple strip spray pipes (25), which are fixed at equal intervals along the circumferential direction on the outer surface of the drive shaft (22) and are all located inside the filter screen (11). Multiple scrapers (23) are fixed at equal intervals along the circumferential direction near one end edge of the outer surface of the drive shaft (22). The multiple scrapers (23) are all located outside the filter screen (11), and one side of the outer surface of the scraper (23) is in contact with the outer surface of the filter screen (11).

10. A low-voltage switchgear assembly according to claim 9, characterized in that: An annular cavity (28) is provided inside the drive shaft (22) near one end edge. The inner wall of the annular cavity (28) is provided with multiple filter ports (38). The multiple filter ports (38) penetrate to the outer surface of the drive shaft (22) and are located inside one of the annular seats (27). Two sealing rings (36) are located on both sides of the filter ports (38). A multiple bridging channels (37) are provided on one side of the inner wall of the annular cavity (28). The multiple bridging channels (37) are connected to the bottom end of the strip spray pipe (25). A bent channel (24) is provided inside one of the support plates (33). The bottom end of the bent channel (24) penetrates into the interior of one of the annular seats (27) and is opposite to the multiple filter ports (38). The top end of the bent channel (24) penetrates into the interior of the reciprocating groove (14) and is connected to the bottom end of the drainage channel (16).

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