Self-cleaning device for power cabinet

Abstract

The invention is suitable for the technical field of power equipment, and provides a power cabinet self-cleaning device which comprises a power cabinet body and a ventilation fence. An air blower is arranged at the top in the power cabinet body, and an exhaust fan is arranged on the side surface; mounting ports are formed in two opposite side surfaces of the power cabinet body; the ventilation fence comprises a fixed frame inserted into the mounting opening; the side face of the fixing frame is fixedly connected with a grid plate piece. The grid plate piece comprises a mounting frame; a plurality of fixing shells are uniformly fixed between the inner walls of the mounting frame; mounting grooves are formed in the surface of the fixed shell; an elastic diaphragm is arranged between the inner walls of the mounting groove; an arc-shaped baffle matched with the elastic diaphragm is fixed to the bottom face of the fixing shell. According to the device, sealing of the ventilation fence is achieved through linkage cooperation of all parts, in the process that all sets of vertical pipes convey gas to the corresponding fixing shells, part of gas is fed into the transverse pipes through the corresponding branch pipes and sprayed out through all sets of spraying pipes, dust adhering to the surfaces of the inclined grid plates is blown away, and the cleaning effect on the electric power cabinet body is improved.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and more specifically, to a self-cleaning device for power cabinets. Background Art

[0002] Power cabinets, including distribution cabinets, metering boxes, etc., are devices that store power control-related equipment. During operation, power equipment consumes a lot of energy and generates a lot of heat. Traditional power cabinets have low heat dissipation efficiency, are prone to accumulating dust, and are difficult to clean.

[0003] A search revealed a power cabinet self-cleaning device with publication number CN116053944B. This device completely seals the power cabinet, and the circulating airflow can send the dust deposited inside the power cabinet into the dust collection tank. During the cleaning process, the dust will not escape outside the power cabinet and pollute the environment. The power cabinet can be self-cleaned by regular cleaning, and the staff only needs to empty the dust in the dust collection tank periodically.

[0004] However, the aforementioned power cabinet cleaning device is activated periodically by a PLC controller, which controls three roller shutter boxes to lower the curtains. The curtains fall into the U-shaped slots, between the first side plate, the second side plate, and the cabinet side wall. Then, an electromagnet is energized to attract the iron strip at the bottom of the curtain, and two telescopic cylinders actuate to clamp the curtains to the cabinet side wall through clamping plates. This creates a sealed space for the entire power cabinet. The above structure is relatively complex and occupies a large amount of internal space in the power cabinet. At the same time, the ventilation grille is fixedly installed on the inner wall of the power cabinet, making it inconvenient to promptly remove dust adhering to the surfaces of the gates, thus reducing the self-cleaning effect of the power cabinet. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a self-cleaning device for power cabinets. Through the linkage and cooperation between various components, the ventilation grille is sealed. During the process of each set of vertical pipes supplying air to the corresponding fixed shell, some of the gas is sent into the horizontal pipe through the corresponding branch pipe and sprayed out through each set of nozzles, blowing away the dust adhering to the surface of the inclined grille, thereby improving the cleaning effect on the power cabinet body.

[0006] To achieve the above object, the present invention provides the following technical solutions: A self-cleaning device for an electrical cabinet includes an electrical cabinet body and ventilation grilles symmetrically arranged on the electrical cabinet body. A blower is connected to the top of the electrical cabinet body, and an exhaust fan is connected to its side. Mounting openings are provided on both opposite sides of the electrical cabinet body. The ventilation grilles include a fixing frame inserted into the mounting opening. A grille plate is fixedly connected to the side of the fixing frame. The grille plate includes a mounting frame. A plurality of fixing shells are uniformly fixed between the inner walls of the mounting frame. Mounting grooves are provided on the surface of the fixing shells. An elastic diaphragm is provided between the inner walls of the mounting grooves. An arc-shaped baffle adapted to the elastic diaphragm is fixed to the bottom surface of the fixing shell. A vertical pipe is provided through and connected to the surface of each fixing shell. A plurality of connecting pipes are threadedly rotatably arranged on the top of the electrical cabinet body. The bottom end of each connecting pipe is screwed to the corresponding vertical pipe, and its top end is connected to the air inlet of the blower via a flexible hose.

[0007] The invention is further configured such that: a sealed door is hinged to the side of the power cabinet body, and a controller is installed inside the door; the output end of the controller is electrically connected to a blower and an exhaust fan respectively; a threaded pipe is fixed to the air outlet of the exhaust fan; a threaded ring is screwed onto the threaded pipe; a dust collector bag is connected to the end of the threaded ring; and a plurality of threaded holes are evenly opened on the top of the power cabinet body to rotate with the threaded connection of the connecting pipe.

[0008] The invention is further configured such that: an air inlet pipe is fixed to the air inlet of the blower; a filter cover is provided at the top of the air inlet pipe; an air receiving pipe is provided inside the air inlet pipe and is coaxially arranged therewith; the bottom of the air receiving pipe is sealed, and air delivery pipes are symmetrically connected to its circumferential side; the air delivery pipes pass through the air inlet pipe and extend outward; an air collection box is fixed to the end of the air delivery pipe; a plurality of installation pipes are evenly connected to the side of the air collection box; each of the installation pipes is connected to its corresponding connecting pipe by a flexible hose.

[0009] The present invention is further configured such that: a plurality of inclined grooves are provided on both sides of the inner wall of the fixed frame from top to bottom; a rectangular groove is provided on the side of the fixed frame; and an inclined grid plate is provided on the side of each fixed shell to slide in cooperation with the corresponding inclined groove.

[0010] The present invention is further configured such that: a sealing frame is provided on the side of the mounting frame to be inserted into the rectangular groove; a plurality of first mounting holes are uniformly provided on the side of the fixing frame; a plurality of second mounting holes are uniformly provided on the side of the mounting frame; and the first mounting holes and the corresponding second mounting holes are fixedly connected by fastening bolts.

[0011] The present invention is further configured such that: each of the vertical pipes is connected to a branch pipe that penetrates the corresponding arc-shaped baffle near its bottom end on its peripheral side; a horizontal pipe is connected to the end of the branch pipe; and a plurality of nozzles are connected to the peripheral side of the horizontal pipe that is inclined downward.

[0012] The invention is further configured such that: sliding members are symmetrically slidably arranged on both sides of the elastic diaphragm on the surface of the fixed shell; the sliding members include a sliding base plate; an arc-shaped side plate adapted to the elastic diaphragm is fixed on the side of the sliding base plate; and a plurality of clearance grooves are opened on the side of the sliding base plate to slide and cooperate with the corresponding vertical pipe.

[0013] The invention is further configured such that: a U-shaped tube is provided through and communicates with both opposite inner walls of the fixed shell; ear plates are symmetrically fixed on the surface of the fixed shell; a piston cylinder is provided through and communicates with the side of the ear plate; the end of the piston cylinder is provided through and communicates with one end of the U-shaped tube; a connecting rod is fixed on the arc-shaped side plate; a piston that slides with the piston cylinder is fixed on the end of the connecting rod; and a return spring is fixedly connected between the side of the piston and the piston cylinder.

[0014] The advantages of this invention are: 1. This invention fixes and limits the ventilation grille by inserting it into the corresponding installation port, rotating the corresponding connecting pipe to make it rotate and descend and screw it into the corresponding vertical pipe. At the same time, it connects each set of fixing shells with the air inlet pipe. The whole device has a simple structure and avoids occupying a large space inside the power cabinet.

[0015] 2. After the ventilation grille and the power cabinet body are assembled, the blower and exhaust fan are started at regular intervals by the controller. Part of the air blown in by the blower enters the corresponding vertical pipe through each hose and inflates the corresponding fixed shell. As the air pressure inside the fixed shell gradually increases, the elastic diaphragm inflates and expands to fit against the arc-shaped baffle, completing the closure of the ventilation grille. The circulating airflow can send the dust deposited inside the power cabinet body into the dust collection bag. During the cleaning process, the dust will not escape to the outside of the power cabinet body and pollute the environment. The self-cleaning of the power cabinet body can be completed by regular cleaning, which improves the cleaning effect of the power cabinet body.

[0016] 3. During the process of supplying gas to the corresponding fixed shell, some of the gas is sent into the horizontal pipe through the corresponding branch pipe and sprayed out through each set of nozzles, blowing away the dust adhering to the surface of the inclined grid plate, which further improves the cleaning effect on the power cabinet body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a power cabinet self-cleaning device according to the present invention.

[0018] Figure 2 This is a structural schematic diagram of a power cabinet self-cleaning device according to the present invention from another angle.

[0019] Figure 3 This is a schematic diagram of the structure of the power cabinet body of the present invention.

[0020] Figure 4This is a structural schematic diagram of the ventilation grille of the present invention.

[0021] Figure 5 This is a structural schematic diagram of the ventilation grille of the present invention from another angle.

[0022] Figure 6 This is a schematic diagram of the ventilation grille of the present invention from the right-hand view.

[0023] Figure 7 For the present invention Figure 6 Enlarged view of region A.

[0024] Figure 8 This is a schematic diagram of the structure of the fixing frame of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the grid plate component of the present invention.

[0026] Figure 10 This is a schematic diagram of the sliding component of the present invention.

[0027] Figure 11 This is a schematic diagram of the slider of the present invention from the right-hand view.

[0028] Figure 12 This is a structural schematic diagram of the grid plate component under sealed condition according to the present invention.

[0029] Figure 13 For the present invention Figure 12 Enlarged view of region B.

[0030] Figure 14 This is a schematic diagram of the structure of the grid plate component under ventilation conditions according to the present invention.

[0031] Figure 15 For the present invention Figure 14 Enlarged view of region C.

[0032] In the diagram: 1. Power cabinet body; 2. Ventilation grille; 3. Blower; 4. Exhaust fan; 5. Mounting port; 6. Fixing frame; 7. Grille plate; 8. Mounting frame; 9. Fixing shell; 10. Elastic diaphragm; 11. Arc-shaped baffle; 12. Vertical pipe; 13. Connecting pipe; 14. Threaded pipe; 15. Threaded ring; 16. Dust collector bag; 17. Inlet pipe; 18. Filter cover; 19. Air inlet pipe; 20. Air supply pipe; 21. Air collection box; 2. Mounting pipe; 23. Inclined groove; 24. Rectangular groove; 25. Inclined grid plate; 26. Sealing frame; 27. First mounting hole; 28. Second mounting hole; 29. ​​Branch pipe; 30. Horizontal pipe; 31. Spray pipe; 32. Sliding component; 33. Sliding base plate; 34. Arc-shaped side plate; 35. Clearance groove; 36. U-shaped pipe; 37. Ear plate; 38. Piston cylinder; 39. Connecting rod; 40. Piston; 41. Return spring; 42. Screw hole. DETAILED DESCRIPTION

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0035] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0036] Example 1, please refer to Figure 1-15 The present invention provides the following technical solutions: A self-cleaning device for an electrical cabinet specifically includes an electrical cabinet body 1 and ventilation grilles 2 symmetrically arranged on the electrical cabinet body 1; a blower 3 is connected to the top of the electrical cabinet body 1, and an exhaust fan 4 is connected to its side; mounting openings 5 ​​are provided on both opposite sides of the electrical cabinet body 1; the ventilation grilles 2 include a fixing frame 6 inserted into the mounting opening 5; a grille plate 7 is fixedly connected to the side of the fixing frame 6; the grille plate 7 includes a mounting frame 8; a plurality of fixing shells 9 are uniformly fixed between the inner walls of the mounting frame 8; mounting grooves are provided on the surface of the fixing shells 9; an elastic diaphragm 10 is provided between the inner walls of the mounting grooves; an arc-shaped baffle 11 adapted to the elastic diaphragm 10 is fixed to the bottom surface of the fixing shells 9; a vertical pipe 12 is provided through and connected to the surface of each fixing shell 9; a plurality of connecting pipes 13 are threadedly rotatably provided on the top of the electrical cabinet body 1; the bottom end of the connecting pipe 13 is screwed to the corresponding vertical pipe 12, and its top end is connected to the air inlet of the blower 3 through a flexible hose.

[0037] The working principle of this embodiment is as follows: After the ventilation grille 2 and the power cabinet body 1 are assembled, the blower 3 and exhaust fan 4 are started by the controller at regular intervals. Part of the air blown in by the blower 3 enters the vertical pipe 12 and inflates the corresponding fixed shell 9. As the air pressure inside the fixed shell 9 gradually increases, the elastic diaphragm 10 inflates and expands to fit against the arc-shaped baffle 11, thus completing the closure of the ventilation grille 2. The circulating airflow can send the dust deposited inside the power cabinet body 1 into the dust collection bag 16. During the cleaning process, the dust will not escape to the outside of the power cabinet body 1 and pollute the environment. The self-cleaning of the power cabinet body 1 can be completed by regular cleaning, which improves the cleaning effect of the power cabinet body 1.

[0038] Example 2, please refer to Figure 1-15 This second embodiment is an improvement on the first embodiment as follows: Specifically, a sealed door is hinged to the side of the power cabinet body 1, and a controller is installed inside it; the output end of the controller is electrically connected to the blower 3 and the exhaust fan 4 respectively; a threaded pipe 14 is fixed to the air outlet of the exhaust fan 4; a threaded ring 15 is screwed onto the threaded pipe 14; a dust collector bag 16 is connected to the end of the threaded ring 15; a number of threaded holes 42 are evenly opened on the top of the power cabinet body 1, which are threaded and rotate with the connecting pipe 13; an air inlet pipe 17 is fixed to the air inlet of the blower 3; a filter cover 18 is installed at the top of the air inlet pipe 17; an air receiving pipe 19 is installed inside the air inlet pipe 17 and is coaxial with it; the bottom of the air receiving pipe 19 is sealed, and an air supply pipe 20 is symmetrically connected to its circumference. An air supply pipe 20 passes through an air inlet pipe 17 and extends outward; an air collection box 21 is fixed to the end of the air supply pipe 20; several installation pipes 22 are evenly connected to the side of the air collection box 21; each installation pipe 22 is connected to its corresponding connecting pipe 13 by a flexible hose; several inclined grooves 23 are opened from top to bottom on both sides of the inner wall of the fixing frame 6; rectangular grooves 24 are opened on the side of the fixing frame 6; each fixing shell 9 is provided with an inclined grid plate 25 that slides with the corresponding inclined groove 23 on its side; a sealing frame 26 is provided on the side of the mounting frame 8 that inserts into the rectangular groove 24; several first mounting holes 27 are evenly opened on the side of the fixing frame 6; several second mounting holes 28 are evenly opened on the side of the mounting frame 8; the first mounting holes 27 and the corresponding second mounting holes 28 are fixedly connected by fastening bolts.

[0039] The working principle of this embodiment 2 is as follows: By inserting the sealing frame 26 into the rectangular groove 24 and fixing the mounting frame 8 to the side of the fixing frame 6 with fastening bolts, the ventilation grille 2 is assembled; by inserting the assembled ventilation grille 2 into the corresponding mounting port 5, rotating each set of connecting pipes 13 in sequence, causing them to rotate and descend and be screwed to the corresponding vertical pipe 12, the ventilation grille 2 and the power cabinet body 1 are fixed in a limited position. The whole device has a simple structure, occupies a small area, and is easy to install.

[0040] The controller controls the blower 3 to start at regular intervals, blowing outside air into the power cabinet body 1 through the air intake pipe 17. At the same time, the exhaust fan 4 is controlled to start synchronously at regular intervals. The circulating airflow can send the dust accumulated in the power cabinet body 1 into the dust collection bag 16 through the threaded pipe 14. During the cleaning process, the dust will not escape to the outside of the power cabinet body 1 and pollute the environment. The power cabinet body 1 can be self-cleaned through regular cleaning. The staff only needs to empty the dust collection bag 16 periodically.

[0041] During the operation of blower 3, part of the airflow entering the intake pipe 17 passes through the air inlet pipe 19, air delivery pipe 20, air collection box 21, each installation pipe 22 and each hose in sequence into the corresponding connecting pipe 13, and then enters the corresponding fixed shell 9 through the corresponding vertical pipe 12. Each set of vertical pipes 12 is only connected to the corresponding fixed shell 9, and is sealed through the other corresponding fixed shells 9.

[0042] Example 3, please refer to Figure 1-15 This embodiment three is an improvement on the first embodiment. Specifically, each vertical pipe 12 is connected to a branch pipe 29 that passes through the corresponding arc-shaped baffle 11 near its bottom end on its circumference side; a horizontal pipe 30 is connected to the end of the branch pipe 29; and several nozzles 31 are connected to the horizontal pipe 30 on its circumference side with an inclined downward orientation.

[0043] The working principle of this embodiment 3: During the process of supplying air to the corresponding fixed shell 9 by each group of vertical pipes 12, some of the gas is sent into the horizontal pipe 30 through the corresponding branch pipe 29, and sprayed out through each group of nozzles 31 to blow away the dust adhering to the surface of the inclined grid plate 25, further improving the cleaning effect on the power cabinet body 1.

[0044] Example 4, please refer to Figure 1-15 This fourth embodiment is an improvement on the first embodiment. Specifically, sliding members 32 are symmetrically slidably arranged on both sides of the elastic diaphragm 10 on the surface of the fixed shell 9. The sliding members 32 include a sliding base plate 33. An arc-shaped side plate 34 adapted to the elastic diaphragm 10 is fixed on the side of the sliding base plate 33. Several clearance grooves 35 that slide with the corresponding vertical tubes 12 are opened on the side of the sliding base plate 33. U-shaped tubes 36 are provided through and connected to both opposite inner walls of the fixed shell 9. Ear plates 37 are symmetrically fixed on the surface of the fixed shell 9. A piston cylinder 38 is provided through and connected to the side of the ear plate 37. The end of the piston cylinder 38 is provided through and connected to one end of the U-shaped tube 36. A connecting rod 39 is fixed on the arc-shaped side plate 34. A piston 40 that slides with the piston cylinder 38 is fixed on the end of the connecting rod 39. A return spring 41 is fixedly connected between the side of the piston 40 and the piston cylinder 38.

[0045] The working principle of this embodiment four: The deformation capacity of the return spring 41 is higher than that of the elastic diaphragm 10. That is, under the same pressure conditions, the return spring 41 deforms first. When part of the air blown in by the blower 3 enters the corresponding vertical pipe 12 through each hose, it inflates the corresponding fixed shell 9. As the air pressure inside the fixed shell 9 gradually increases, the airflow enters the piston cylinder 38 through the U-shaped pipe 36, driving the piston 40 to move along the piston cylinder 38. The corresponding return spring 41 is stretched, causing the two sliding base plates 33 to slide closer together until the two arc-shaped side plates 34 abut against the side of the arc-shaped baffle 11, preventing the subsequent elastic diaphragm 10 from being overloaded. The expansion causes the elastic diaphragm 10 to burst, keeping it in a safe inflated state. As the internal air pressure of the fixed shell 9 gradually increases, the elastic diaphragm 10 inflates and expands to fit against the arc-shaped baffle 11 and between the two arc-shaped side plates 34, completing the closure of the ventilation grille 2. This keeps the inside of the power cabinet body 1 relatively sealed, and the circulating airflow can send the dust deposited inside the power cabinet body 1 into the dust collection bag 16. During the cleaning process, the dust will not escape to the outside of the power cabinet body 1 and pollute the environment. Timed cleaning can complete the self-cleaning of the power cabinet body 1, improving the cleaning effect of the power cabinet body 1.

[0046] After cleaning the dust inside the power cabinet body 1, turn off the blower 3 and the exhaust fan 4, so that each set of fixed shells 1 can be connected to the outside through the corresponding vertical pipe 12 and branch pipe 29. At the same time, under the elastic reset force of the corresponding return spring 41 and elastic diaphragm 10, the corresponding sliding part 32 slides away from the thrust of the corresponding arc baffle 11, and the elastic diaphragm 10 resets, so that the ventilation grille 2 is in the open state, which facilitates the flow of air between the outside and the power cabinet body 1.

[0047] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0051] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A self-cleaning device for a power cabinet, comprising a power cabinet body (1) and a ventilation grille (2) symmetrically arranged on the power cabinet body (1); Features: The top of the power cabinet body (1) is connected to a blower (3), and the side thereof is connected to an exhaust fan (4); The power cabinet body (1) has mounting openings (5) on two opposite sides; the ventilation grille (2) comprises a fixing frame (6) inserted into the mounting opening (5); a grille member (7) is fixedly connected to a side of the fixing frame (6); The grid plate member (7) comprises a mounting frame (8); a plurality of fixed shells (9) are evenly fixed between the inner walls of the mounting frame (8); a mounting groove is provided on the surface of the fixed shell (9); an elastic diaphragm (10) is provided between the inner walls of the mounting groove; an arc-shaped baffle (11) adapted to the elastic diaphragm (10) is fixed on the bottom surface of the fixed shell (9); and a vertical pipe (12) is provided through and in communication with the surface of each of the fixed shells (9); A plurality of connecting pipes (13) are provided on the top of the power cabinet body (1) in a threaded manner; the bottom ends of the connecting pipes (13) are threadedly connected to the corresponding vertical pipes (12), and the top ends of the connecting pipes (13) are connected to the air inlet of the blower (3) via a hose.

2. A self-cleaning device for a power cabinet according to claim 1, Features: The power cabinet body (1) is hingedly provided with a sealed door on the side thereof, and a controller is provided inside the sealed door; the output end of the controller is electrically connected to the blower (3) and the exhaust fan (4) respectively; a threaded pipe (14) is fixed to the air outlet of the exhaust fan (4); a screw ring (15) is screwed to the threaded pipe (14); a dust removal bag (16) is provided at the end of the screw ring (15); and a plurality of screw holes (42) are evenly provided on the top of the power cabinet body (1) and are rotatably matched with the threads of the connecting pipe (13).

3. A self-cleaning device for a power cabinet according to claim 2, Features: An air inlet (17) is fixed to the air inlet of the blower (3); a filter cover (18) is arranged at the top of the air inlet pipe (17); an air connection pipe (19) is arranged coaxially with the air inlet pipe (17); the bottom of the air connection pipe (19) is sealed, and an air supply pipe (20) is symmetrically connected to the side surface thereof; the air supply pipe (20) passes through the air inlet pipe (17) and extends outward; an air collecting box (21) is fixed to the end of the air supply pipe (20); a plurality of installation pipes (22) are evenly connected to the side surface of the air collecting box (21); each installation pipe (22) is connected to the corresponding connecting pipe (13) by a hose.

4. A self-cleaning device for a power cabinet according to claim 3, Features: A plurality of inclined grooves (23) are provided on both sides of the inner wall of the fixed frame (6) from top to bottom; a rectangular groove (24) is provided on the side of the fixed frame (6); and an inclined grid plate (25) slidably matched with the corresponding inclined groove (23) is provided on the side of each fixed shell (9).

5. A self-cleaning device for a power cabinet according to claim 4, Features: A sealing frame (26) pluggably engaged with the rectangular groove (24) is provided on the side of the installation frame (8); a plurality of first installation holes (27) are evenly provided on the side of the fixing frame (6); a plurality of second installation holes (28) are evenly provided on the side of the installation frame (8); the first installation holes (27) are fixedly connected to the corresponding second installation holes (28) by means of fastening bolts.

6. A self-cleaning device for a power cabinet according to claim 5, Features: Each vertical pipe (12) is connected to a branch pipe (29) penetrating the corresponding arc-shaped baffle (11) on its peripheral side surface near its bottom end; a horizontal pipe (30) is connected to the end of the branch pipe (29); and a plurality of nozzles (31) are connected to the peripheral side surface of the horizontal pipe (30) in an inclined manner downward.

7. A self-cleaning device for a power cabinet according to claim 6, Features: The surface of the fixed shell (9) is symmetrically slidably provided with sliding members (32) on both sides of the elastic diaphragm (10); the sliding members (32) include a sliding bottom plate (33); an arc-shaped side plate (34) adapted to the elastic diaphragm (10) is fixed to the side of the sliding bottom plate (33); and a plurality of avoidance grooves (35) slidably matched with corresponding vertical pipes (12) are provided on the side of the sliding bottom plate (33).

8. A self-cleaning device for a power cabinet according to claim 7, Features: U-shaped tubes (36) are provided through and in communication with two opposite inner walls of the fixed shell (9); ear plates (37) are symmetrically fixed on the surface of the fixed shell (9); a piston cylinder (38) is provided through and in communication with the side of the ear plate (37); the end of the piston cylinder (38) is provided through and in communication with one end of the U-shaped tube (36); a connecting rod (39) is fixed to the arc-shaped side plate (34); a piston (40) which is slidably matched with the piston cylinder (38) is fixed to the end of the connecting rod (39); and a return spring (41) is fixedly connected between the side of the piston (40) and the piston cylinder (38).

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