Ventilation structure of high-low voltage power distribution cabinet
By installing a fan and duct circulation ventilation structure outside the high and low voltage distribution cabinet, the problem of poor internal heat dissipation effect is solved, efficient heat dissipation and dust protection are achieved, and component life is extended.
Patent Information
- Application Number
- CN202510783552.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-12
- Publication Date
- 2025-08-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The internal fans of the existing high and low voltage distribution cabinets occupy a large space and have poor heat dissipation effects, which affects the performance and life of the components.
Install a fan on the outside of the distribution cabinet, and introduce cold air into the interior through the intake pipe and air duct. Combined with the intake filter and exhaust filter to prevent dust, use the air duct circulation ventilation structure to achieve efficient heat dissipation, and at the same time, set up cleaning components to automatically clean the filter.
It improves the heat dissipation effect inside the distribution cabinet, reduces the internal space, prevents dust from entering, and extends the service life of the components.
Smart Images
Figure CN120453903A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a ventilation structure of a high and low voltage power distribution cabinet. Background Art
[0002] As the name suggests, high and low voltage distribution cabinets are distribution equipment used for power distribution, control, metering and cable connection in power supply systems. Generally, power supply bureaus and substations use high-voltage switchgear, which is then stepped down by the transformer and led to the low-voltage side to the low-voltage distribution cabinet. The low-voltage distribution cabinet is then led to the distribution boards, control boxes, and switch boxes of various power users. The equipment in the cabinet is a distribution device that is assembled into one by some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices to meet the design functional requirements.
[0003] In the prior art, fans are generally installed inside the distribution cabinet to achieve heat dissipation and cooling of internal electronic components. However, installing the fan inside the distribution cabinet takes up more space inside the distribution cabinet. When the air temperature is high, the heat dissipation effect of the distribution cabinet is poor, and the poor heat dissipation effect affects the performance and life of the components. Therefore, we propose a ventilation structure for high and low voltage distribution cabinets to solve the above problems. Summary of the Invention
[0004] Based on the background technology, fans are generally installed inside the distribution cabinet to achieve heat dissipation and cooling of internal electronic components. However, installing the fans inside the distribution cabinet takes up more space inside the distribution cabinet. When the air temperature is high, the heat dissipation effect of the distribution cabinet is poor, and the poor heat dissipation effect affects the performance and life of the components. The present invention proposes a ventilation structure for high and low voltage distribution cabinets.
[0005] The present invention provides a ventilation structure for a high and low voltage distribution cabinet, comprising a distribution cabinet body, and further comprising: The base is fixedly mounted on the bottom of the power distribution cabinet body, and exhaust holes are opened on the bottom inner wall of the power distribution cabinet body and the base, and exhaust filters are installed inside the exhaust holes; An air intake pipe, the bottom end of which is fixedly mounted on the top of the power distribution cabinet body, a fan is fixedly mounted on the inner wall of the air intake pipe, and an air intake hole is opened on the bottom inner wall of the air intake pipe; Two air ducts are provided, the top ends of the two air ducts both pass through the top inner wall of the power distribution cabinet body and are connected to the interior of the air inlet pipe. The two air ducts are respectively fixedly mounted on the left inner wall and the right inner wall of the power distribution cabinet body, and a plurality of air outlet holes are opened on one inner wall of the air duct; An air intake filter screen is plugged into the top end of the air intake pipe; Two brackets are provided, and ends of the two brackets close to each other are fixedly installed on the left and right sides of the intake pipe respectively; A cleaning assembly is provided between the two brackets and cooperates with the air intake filter; The card-mounted component is arranged on the bracket on the right side, and a card slot is provided at the right end of the air intake filter, and the card-mounted component cooperates with the card slot.
[0006] With the help of the above structure, by starting the fan, the cold air outside the air inlet pipe can be drawn in and blown into the interior of the distribution cabinet body through the air inlet hole. At the same time, the cold air can also enter the two air ducts and blow into the interior of the distribution cabinet body through multiple air outlet holes. Here, by setting two air ducts, the blowing area of the fan to the interior of the distribution cabinet body can be increased, ensuring that the electronic components inside the distribution cabinet body are fully blown and cooled, which can improve the heat dissipation effect inside the distribution cabinet body, and setting the air duct on the side wall of the distribution cabinet body will not occupy too much space inside the distribution cabinet body. In addition, a ventilation cycle is formed between the air inlet pipe and the exhaust hole, which can realize the rapid extraction of heat from the inside of the distribution cabinet body and improve the heat dissipation effect inside the distribution cabinet body. Finally, by setting the air intake filter and the exhaust filter, external dust can be prevented from entering the interior of the distribution cabinet body, which can ensure the ventilation and heat dissipation effect while achieving dust-proof protection for the inside of the distribution cabinet body.
[0007] Preferably, two partitions are fixedly mounted on the bottom inner wall of the air inlet pipe.
[0008] Furthermore, by providing a partition, the wind blown out by the fan can be separated, ensuring that the cold air stably enters the interior of the two air ducts.
[0009] Preferably, two T-shaped slots are provided on the top of the air intake pipe, and two T-shaped blocks are fixedly installed on the bottom of the air intake filter, and the T-shaped blocks are slidably connected in the corresponding T-shaped slots.
[0010] Furthermore, through the sliding limit cooperation between the T-block and the T-slot, the stable connection between the air intake filter and the air intake pipe can be facilitated, and a preliminary positioning effect can be achieved.
[0011] Preferably, the cleaning assembly includes two electric slide rails, a mounting plate, an electric push rod, a U-shaped frame, a motor and a cleaning roller, the two electric slide rails are respectively fixedly mounted on the side of the two brackets close to each other, the left end and the right end of the mounting plate are respectively mounted on the two electric slide rails, the mounting plates are respectively slidably connected to the two electric slide rails, the electric push rod is fixedly mounted on the top of the mounting plate, the output shaft of the electric push rod passes through the mounting plate and is fixedly mounted on the top of the U-shaped frame, the motor is fixedly mounted on the right side of the U-shaped frame, the left end of the cleaning roller is rotatably connected to the left inner wall of the U-shaped frame, and the right end of the cleaning roller is fixedly mounted on the output shaft of the motor.
[0012] Furthermore, by starting the two electric slide rails, the mounting plate, electric push rod, U-shaped frame, motor and cleaning roller can be driven to move forward and backward, and then by starting the electric push rod, the U-shaped frame, motor and cleaning roller can be driven to adjust the height so that the cleaning roller can contact the air intake filter. Then, by starting the motor, the cleaning roller can be driven to rotate, so that the cleaning roller can brush and clean the air intake filter, thereby realizing the dust removal operation on the air intake filter and ensuring the air intake effect of the air intake filter.
[0013] Preferably, two stabilizing bars are fixedly mounted on the top end of the U-shaped frame, and the top ends of the two stabilizing bars pass through the mounting plate and are slidably connected to the mounting plate.
[0014] Furthermore, by providing a stabilizing bar, the lifting stability of the U-shaped frame, the motor and the cleaning roller can be improved.
[0015] Preferably, the card assembly includes a sliding rod, a card rod, a spring, a cross rod, a stop shaft and a toggle rod, the bottom end of the sliding rod is slidably connected to the top of the right bracket, the right end of the card rod is fixedly mounted on the left side of the sliding rod, the left end of the card rod can be detached and inserted into the card slot, the left end of the spring is fixedly mounted on the right side of the sliding rod, the right end of the spring is fixedly mounted on the left side of the right bracket, the left end of the cross rod is fixedly mounted on the right side of the sliding rod, the stop shaft is fixedly mounted on the front side of the cross rod, the top end of the toggle rod passes through the right bracket and is slidably connected to the bracket, a strip hole is opened on the toggle rod, the front end of the stop shaft passes through the strip hole and is slidably connected to the inner wall of the strip hole.
[0016] Furthermore, by setting a plug-in limit between the card assembly and the card slot, the air intake filter can be stably card-fixed, and at the same time, it can be convenient to install and unlock the air intake filter, facilitate disassembly and assembly of the air intake filter, and facilitate cleaning and maintenance of the air intake filter.
[0017] Preferably, a sliding groove is provided on the top of the bracket located on the right side, and the bottom end of the sliding rod is slidably connected to the inside of the sliding groove.
[0018] Furthermore, by providing the sliding groove, the sliding rod and the clamping rod can be stably slidingly limited and slidingly supported.
[0019] Preferably, a sliding hole is opened on the bracket located on the right side, the top end of the toggle rod passes through the sliding hole and is rotatably connected to the inner wall of the sliding hole, and the front and rear sides of the toggle rod are in sliding contact with the front inner wall and rear inner wall of the sliding hole respectively.
[0020] Furthermore, the sliding hole can be provided to facilitate installation of the toggle lever, thereby facilitating connection and transmission between the toggle lever and the stop shaft.
[0021] The beneficial effects of the present invention are: 1. By starting the fan, the cold air outside the air inlet pipe can be drawn in and blown into the interior of the power distribution cabinet body through the air inlet hole. At the same time, the cold air can also enter the two air ducts and blow into the interior of the power distribution cabinet body through multiple air outlet holes. Here, by setting two air ducts, the blowing area of the fan to the interior of the power distribution cabinet body can be increased, ensuring that the electronic components inside the power distribution cabinet body are fully blown and cooled, which can improve the heat dissipation effect inside the power distribution cabinet body. In addition, arranging the air duct on the side wall of the power distribution cabinet body will not occupy too much space inside the power distribution cabinet body. In addition, a ventilation cycle is formed between the air inlet pipe and the exhaust hole, which can realize the rapid extraction of heat from the inside of the power distribution cabinet body and improve the heat dissipation effect inside the power distribution cabinet body. 2. By setting up the air intake filter and the exhaust filter, external dust can be prevented from entering the interior of the distribution cabinet, which can ensure the ventilation and heat dissipation effect while realizing the dust-proof protection inside the distribution cabinet; 3. By starting the two electric slide rails, the mounting plate, electric push rod, U-shaped frame, motor and cleaning roller can be driven to move forward and backward. Then, by starting the electric push rod, the U-shaped frame, motor and cleaning roller can be driven to adjust the height so that the cleaning roller can contact the air intake filter. Then, by starting the motor, the cleaning roller can be driven to rotate, so that the cleaning roller can brush the air intake filter to clean it, thereby achieving dust removal on the air intake filter and ensuring the air intake effect of the air intake filter. 4. By setting the insertion limit between the card assembly and the card slot, the air intake filter can be stably fixed and fixed, and it is also easy to install and unlock the air intake filter, facilitate the disassembly and installation of the air intake filter, and facilitate the cleaning and maintenance of the air intake filter; The present invention achieves efficient heat dissipation inside the distribution cabinet body by arranging the fan outside the distribution cabinet body, reduces the occupied space inside the distribution cabinet body, can quickly extract the heat inside the distribution cabinet body, improves the heat dissipation effect inside the distribution cabinet body, and has a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a structural front view of a ventilation structure for a high and low voltage distribution cabinet proposed by the present invention; Figure 2 This is a main cross-sectional view of the ventilation structure of a high and low voltage distribution cabinet proposed by the present invention; Figure 3 This is an enlarged cross-sectional view of a local structure of a ventilation structure of a high and low voltage distribution cabinet proposed by the present invention; Figure 4 The invention provides a kind of ventilation structure of high and low voltage distribution cabinet. Figure 3 Schematic diagram of the structure of part A; Figure 5This is a three-dimensional structural diagram of the air ducts and air outlets of the ventilation structure of a high and low voltage distribution cabinet proposed by the present invention.
[0023] In the figure: 1. Distribution cabinet body; 2. Base; 3. Exhaust hole; 4. Exhaust filter; 5. Inlet pipe; 6. Fan; 7. Air inlet; 8. Partition; 9. Air duct; 10. Air outlet; 11. Inlet filter; 12. T-block; 13. T-slot; 14. Card slot; 15. Bracket; 16. Slide bar; 17. Card rod; 18. Slide slot; 19. Spring; 20. Cross bar; 21. Stop shaft; 22. Toggle lever; 23. Strip hole; 24. Slide hole; 25. Electric slide rail; 26. Mounting plate; 27. Electric push rod; 28. U-shaped frame; 29. Motor; 30. Cleaning roller; 31. Stabilizer bar. DETAILED DESCRIPTION
[0024] The present invention will be further explained below with reference to specific embodiments.
[0025] refer to Figure 1-Figure 5 In this embodiment, a ventilation structure of a high and low voltage distribution cabinet is proposed, including a distribution cabinet body 1, and the ventilation structure further includes: A base 2 is fixedly mounted on the bottom of the power distribution cabinet body 1, and an exhaust hole 3 is provided on the bottom inner wall of the power distribution cabinet body 1 and the base 2, and an exhaust filter 4 is installed inside the exhaust hole 3; An air inlet pipe 5, the bottom end of which is fixedly mounted on the top of the power distribution cabinet body 1, a fan 6 is fixedly mounted on the inner wall of the air inlet pipe 5, and an air inlet hole 7 is opened on the inner wall of the bottom of the air inlet pipe 5; There are two air ducts 9, the top ends of which pass through the top inner wall of the power distribution cabinet body 1 and are connected to the interior of the air inlet pipe 5. The two air ducts 9 are respectively fixedly mounted on the left inner wall and the right inner wall of the power distribution cabinet body 1. A plurality of air outlet holes 10 are opened on one inner wall of the air duct 9; An air intake filter 11 is plugged into the top of the air intake pipe 5; Two brackets 15 are provided, and ends of the two brackets 15 close to each other are fixedly mounted on the left and right sides of the intake pipe 5 respectively; A cleaning assembly is provided between the two brackets 15 and cooperates with the air intake filter 11; The card-mounted component is arranged on the bracket 15 on the right side. A card slot 14 is provided at the right end of the air intake filter 11 , and the card-mounted component cooperates with the card slot 14 .
[0026] By means of the above structure, by starting the fan 6, the cold air outside the air inlet pipe 5 can be drawn in and blown into the interior of the distribution cabinet body 1 through the air inlet hole 7. At the same time, the cold air can also enter the two air ducts 9 and blow into the interior of the distribution cabinet body 1 through multiple air outlet holes 10. Here, by setting two air ducts 9, the blowing area of the fan 6 to the interior of the distribution cabinet body 1 can be increased, ensuring that the electronic components inside the distribution cabinet body 1 are fully blown and cooled, which can improve the heat dissipation effect inside the distribution cabinet body 1, and setting the air duct 9 on the side wall of the distribution cabinet body 1 will not occupy too much space inside the distribution cabinet body 1. In addition, a ventilation cycle is formed between the air inlet pipe 5 and the exhaust hole 3, which can realize the rapid extraction of heat from the inside of the distribution cabinet body 1 and improve the heat dissipation effect inside the distribution cabinet body 1. Finally, by setting the air intake filter 11 and the exhaust filter 4, external dust can be prevented from entering the interior of the distribution cabinet body 1, which can ensure the ventilation and heat dissipation effect while achieving dust-proof protection for the interior of the distribution cabinet body 1.
[0027] In this embodiment, two partitions 8 are fixedly installed on the bottom inner wall of the air inlet pipe 5. By providing the partitions 8, the wind blown out by the fan 6 can be separated, ensuring that the cold air stably enters the interior of the two air ducts 9.
[0028] In this embodiment, two T-slots 13 are provided on the top of the air intake pipe 5, and two T-blocks 12 are fixedly installed on the bottom of the air intake filter 11. The T-blocks 12 are slidably connected in the corresponding T-slots 13. Through the sliding limit cooperation between the T-blocks 12 and the T-slots 13, the air intake filter 11 and the air intake pipe 5 can be stably plugged in, and a preliminary positioning effect can be achieved.
[0029] In this embodiment, the cleaning assembly includes two electric slide rails 25, a mounting plate 26, an electric push rod 27, a U-shaped frame 28, a motor 29 and a cleaning roller 30. The two electric slide rails 25 are respectively fixedly mounted on the side of the two brackets 15 close to each other, the left end and the right end of the mounting plate 26 are respectively mounted on the two electric slide rails 25, the mounting plate 26 is respectively slidably connected to the two electric slide rails 25, the electric push rod 27 is fixedly mounted on the top of the mounting plate 26, the output shaft of the electric push rod 27 passes through the mounting plate 26 and is fixedly mounted on the top of the U-shaped frame 28, the motor 29 is fixedly mounted on the right side of the U-shaped frame 28, and the left end of the cleaning roller 30 is rotatably connected to the left end of the U-shaped frame 28. On the side inner wall, the right end of the cleaning roller 30 is fixedly mounted on the output shaft of the motor 29. By starting the two electric slide rails 25, the mounting plate 26, the electric push rod 27, the U-shaped frame 28, the motor 29 and the cleaning roller 30 can be driven to move back and forth. Then, by starting the electric push rod 27, the U-shaped frame 28, the motor 29 and the cleaning roller 30 can be driven to adjust the height so that the cleaning roller 30 can contact the air intake filter 11. Then, by starting the motor 29, the cleaning roller 30 can be driven to rotate, so that the cleaning roller 30 can brush and clean the air intake filter 11, thereby realizing the dust removal operation on the air intake filter 11 and ensuring the air intake effect of the air intake filter 11.
[0030] In this embodiment, two stabilizing rods 31 are fixedly installed on the top of the U-shaped frame 28. The top ends of the two stabilizing rods 31 pass through the mounting plate 26 and are slidably connected to the mounting plate 26. By providing the stabilizing rods 31, the lifting and lowering stability of the U-shaped frame 28, the motor 29 and the cleaning roller 30 can be improved.
[0031] In this embodiment, the card assembly includes a slide bar 16, a card bar 17, a spring 19, a cross bar 20, a stop shaft 21 and a toggle rod 22. The bottom end of the slide bar 16 is slidably connected to the top of the right bracket 15, the right end of the card bar 17 is fixedly mounted on the left side of the slide bar 16, and the left end of the card bar 17 can be detached and inserted into the card slot 14. The left end of the spring 19 is fixedly mounted on the right side of the slide bar 16, the right end of the spring 19 is fixedly mounted on the left side of the right bracket 15, the left end of the cross bar 20 is fixedly mounted on the right side of the slide bar 16, and the stop shaft 21 is fixed. It is fixedly installed on the front side of the cross bar 20, and the top end of the toggle rod 22 passes through the bracket 15 on the right and is slidably connected to the bracket 15. A bar hole 23 is provided on the toggle rod 22, and the front end of the retaining shaft 21 passes through the bar hole 23 and is slidably connected to the inner wall of the bar hole 23. By setting the plug-in limit between the card assembly and the card slot 14, the air intake filter 11 can be stably fixed and the air intake filter 11 can be easily installed and unlocked, and the air intake filter 11 can be easily disassembled and assembled, and the air intake filter 11 can be easily cleaned and maintained.
[0032] In this embodiment, a slide groove 18 is provided at the top of the bracket 15 located on the right side, and the bottom end of the slide rod 16 is slidably connected to the inside of the slide groove 18. By providing the slide groove 18, the slide rod 16 and the card rod 17 can be stably slidably limited and slidably supported.
[0033] In this embodiment, a sliding hole 24 is provided on the bracket 15 located on the right side. The top end of the toggle rod 22 passes through the sliding hole 24 and is rotatably connected to the inner wall of the sliding hole 24. The front and rear sides of the toggle rod 22 are in sliding contact with the front inner wall and the rear inner wall of the sliding hole 24 respectively. By providing the sliding hole 24, the toggle rod 22 can be easily installed, and the connection and transmission between the toggle rod 22 and the blocking shaft 21 are facilitated.
[0034] It should be noted that the specific types of distribution cabinet body 1, fan 6, electric slide rail 25, electric push rod 27 and motor 29 to be used are selected by relevant technical personnel familiar with this field, and the above distribution cabinet body 1, fan 6, electric slide rail 25, electric push rod 27 and motor 29 are all existing technologies and will not be elaborated in this plan.
[0035] Working principle: When in use, first connect the distribution cabinet body 1, fan 6, electric slide rail 25, electric push rod 27 and motor 29 to the external power supply, and then start the fan 6 to draw the cold air outside the air inlet pipe 5 into the interior of the distribution cabinet body 1 through the air inlet hole 7. At the same time, the cold air can also enter the two air ducts 9 and be blown into the interior of the distribution cabinet body 1 through multiple air outlets 10. Here, by setting up two air ducts 9, the blowing area of the fan 6 to the interior of the distribution cabinet body 1 can be increased, ensuring the electronic components inside the distribution cabinet body 1. Carrying out comprehensive air blowing cooling can improve the heat dissipation effect inside the power distribution cabinet body 1, and setting the air duct 9 on the side wall of the power distribution cabinet body 1 will not occupy too much space inside the power distribution cabinet body 1. In addition, a ventilation cycle is formed between the air inlet pipe 5 and the exhaust hole 3, which can realize the rapid extraction of heat inside the power distribution cabinet body 1 and improve the heat dissipation effect inside the power distribution cabinet body 1. Finally, by setting the air inlet filter 11 and the exhaust filter 4, external dust can be prevented from entering the interior of the power distribution cabinet body 1, which can ensure the ventilation and heat dissipation effect while achieving the power distribution cabinet body 1. The dustproof protection inside the cabinet body 1, in addition, the sliding limit between the T-block 12 and the T-slot 13 can facilitate the stable plugging of the air intake filter 11 and the air intake pipe 5, and can achieve the initial positioning effect. Here, by setting the plug-in limit between the card assembly and the card slot 14, the air intake filter 11 can be stably fixed and fixed. At the same time, it is convenient to install and unlock the air intake filter 11, to disassemble and assemble the air intake filter 11, and to clean and maintain the air intake filter 11. Finally, by starting the two electric slide rails 25 It can drive the mounting plate 26, the electric push rod 27, the U-shaped frame 28, the motor 29 and the cleaning roller 30 to move forward and backward, and then by starting the electric push rod 27, the U-shaped frame 28, the motor 29 and the cleaning roller 30 can be driven to adjust the height so that the cleaning roller 30 can contact the air intake filter 11, and then by starting the motor 29, the cleaning roller 30 can be driven to rotate, so that the cleaning roller 30 can brush and clean the air intake filter 11, thereby realizing the dust removal operation on the air intake filter 11 and ensuring the air intake effect of the air intake filter 11.
[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A ventilation structure for a high and low voltage distribution cabinet, comprising a distribution cabinet body (1), characterized in that: The ventilation structure also includes: A base (2), the base (2) being fixedly mounted on the bottom of the power distribution cabinet body (1), and an exhaust hole (3) being provided on the bottom inner wall of the power distribution cabinet body (1) and the base (2), and an exhaust filter (4) being installed inside the exhaust hole (3); An air intake pipe (5), wherein the bottom end of the air intake pipe (5) is fixedly mounted on the top of the power distribution cabinet body (1), a fan (6) is fixedly mounted on the inner wall of the air intake pipe (5), and an air intake hole (7) is opened on the bottom inner wall of the air intake pipe (5); There are two air ducts (9), the top ends of the two air ducts (9) both pass through the top inner wall of the power distribution cabinet body (1) and are connected to the inside of the air inlet pipe (5), the two air ducts (9) are respectively fixedly mounted on the left inner wall and the right inner wall of the power distribution cabinet body (1), and a plurality of air outlet holes (10) are opened on the inner wall of one side of the air duct (9); An air intake filter (11), the air intake filter (11) being plugged into the top end of the air intake pipe (5); Two brackets (15) are provided, and ends of the two brackets (15) close to each other are fixedly mounted on the left and right sides of the air intake pipe (5) respectively; A cleaning assembly, the cleaning assembly being arranged between the two brackets (15), and the cleaning assembly being matched with the air intake filter (11); A card-mounted assembly is provided on the bracket (15) on the right side, a card slot (14) is provided at the right end of the air intake filter (11), and the card-mounted assembly cooperates with the card slot (14).
2. The ventilation structure of a high and low voltage distribution cabinet according to claim 1, characterized in that: Two partitions (8) are fixedly mounted on the inner wall of the bottom of the air inlet pipe (5).
3. The ventilation structure of a high and low voltage distribution cabinet according to claim 1, characterized in that: Two T-shaped slots (13) are provided on the top of the air intake pipe (5), and two T-shaped blocks (12) are fixedly installed on the bottom of the air intake filter (11), and the T-shaped blocks (12) are slidably connected in the corresponding T-shaped slots (13).
4. The ventilation structure of a high and low voltage distribution cabinet according to claim 1, characterized in that: The cleaning assembly comprises two electric slide rails (25), a mounting plate (26), an electric push rod (27), a U-shaped frame (28), a motor (29) and a cleaning roller (30), wherein the two electric slide rails (25) are respectively fixedly mounted on the sides of the two brackets (15) close to each other, the left end and the right end of the mounting plate (26) are respectively mounted on the two electric slide rails (25), the mounting plate (26) is respectively slidably connected to the two electric slide rails (25), the electric push rod (27) is fixedly mounted on the top of the mounting plate (26), the output shaft of the electric push rod (27) passes through the mounting plate (26) and is fixedly mounted on the top of the U-shaped frame (28), the motor (29) is fixedly mounted on the right side of the U-shaped frame (28), the left end of the cleaning roller (30) is rotatably connected to the left inner wall of the U-shaped frame (28), and the right end of the cleaning roller (30) is fixedly mounted on the output shaft of the motor (29).
5. The ventilation structure of a high and low voltage distribution cabinet according to claim 4, characterized in that: Two stabilizing rods (31) are fixedly mounted on the top of the U-shaped frame (28), and the tops of the two stabilizing rods (31) both pass through the mounting plate (26) and are slidably connected to the mounting plate (26).
6. The ventilation structure of a high and low voltage distribution cabinet according to claim 1, characterized in that: The card assembly includes a slide bar (16), a card bar (17), a spring (19), a cross bar (20), a stop shaft (21) and a toggle bar (22). The bottom end of the slide bar (16) is slidably connected to the top of the right bracket (15). The right end of the card bar (17) is fixedly mounted on the left side of the slide bar (16). The left end of the card bar (17) can be detached and inserted into the card slot (14). The left end of the spring (19) is fixedly mounted on the right side of the slide bar (16). The spring (19) ) is fixedly mounted on the left side of the right bracket (15), the left end of the cross bar (20) is fixedly mounted on the right side of the slide bar (16), the stop shaft (21) is fixedly mounted on the front side of the cross bar (20), the top end of the toggle rod (22) passes through the right bracket (15) and is slidably connected to the bracket (15), the toggle rod (22) is provided with a strip hole (23), the front end of the stop shaft (21) passes through the strip hole (23) and is slidably connected to the inner wall of the strip hole (23).
7. The ventilation structure of a high and low voltage distribution cabinet according to claim 6, characterized in that: A slide groove (18) is provided on the top of the bracket (15) on the right side, and the bottom end of the slide rod (16) is slidably connected to the inside of the slide groove (18).
8. The ventilation structure of a high and low voltage distribution cabinet according to claim 6, characterized in that: A sliding hole (24) is provided on the bracket (15) on the right side. The top end of the toggle rod (22) passes through the sliding hole (24) and is rotatably connected to the inner wall of the sliding hole (24). The front side and the rear side of the toggle rod (22) are in sliding contact with the front inner wall and the rear inner wall of the sliding hole (24), respectively.