Ventilation and heat dissipation structure of electrical cabinet

Abstract

This invention provides a ventilation and heat dissipation structure for an electrical cabinet, belonging to the technical field of electrical cabinets. It includes a hopper and a feeding chute on the hopper. A feeding unit is provided on the hopper for feeding materials into it. A conveying pipe is provided below the hopper, and a connecting pipe is fixedly connected to the hopper. An air compressor is provided on one side of the conveying pipe, and the output end of the air compressor is connected to the conveying pipe. A screening unit is provided inside the hopper for screening materials with larger particle sizes. A crushing mechanism can be provided to crush large-diameter limestone, reducing particle size and moisture content, ensuring limestone flowability, preventing particle adhesion and agglomeration, and improving conveying performance.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, and in particular to a ventilation and heat dissipation structure for electrical cabinets. Background Technology

[0002] Electrical cabinets integrate electrical components such as circuit breakers, frequency converters, PLCs, contactors, and power modules. They continuously generate Joule heat during operation. If the heat cannot be dissipated in time, the temperature inside the cabinet will exceed the standard, causing component parameter drift, insulation aging, shutdown failure, or even burnout. Electrical cabinet ventilation and heat dissipation are divided into two main categories: natural ventilation and forced ventilation. In some scenarios, heat exchange and cooling modules are used to achieve composite heat dissipation. The ventilation and heat dissipation structure of electrical cabinets allows outside air to carry various impurities into the cabinet, including dust, metal shavings, lint, and water mist. When the filter becomes clogged, the ventilation volume drops sharply, causing the heat dissipation function to fail. Currently, the usual method for cleaning the filter is to manually remove it and then wash it. However, this method is difficult to maintain a good filtration effect in the long term, which will eventually affect the heat dissipation of the electrical cabinet. Traditional cleaning methods cannot ensure that the electrical cabinet is always in a state of efficient heat dissipation. Over time, this will inevitably have an adverse effect on the normal operation of the electrical cabinet. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a ventilation and heat dissipation structure for electrical cabinets. By incorporating cleaning components, dust that has not been shaken off from the air intake filter plate can be thoroughly cleaned, ensuring its filtration performance and preventing filter plate blockage. This not only maintains the cleanliness of the air intake filter plate but also reduces the reduction in heat dissipation efficiency caused by air intake obstruction, thus ensuring the overall stability and reliability of the cabinet's operation.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: Filter cleaning is usually done manually by disassembling and cleaning, but this method is difficult to maintain a good filtration effect for a long time, affects the heat dissipation of the electrical cabinet, and cannot ensure its efficient heat dissipation. In the long run, this will affect the normal operation of the electrical cabinet.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An electrical cabinet ventilation and heat dissipation structure includes a support platform and a cabinet fixed on the support platform, and further includes: An installation slot is provided on the support platform, and an air intake mechanism is provided in the installation slot. The air intake mechanism is used to send cold air from outside the cabinet into the cabinet. A baffle is fixed on the cabinet, and an exhaust mechanism is provided on the cabinet to force hot air out of the cabinet.

[0006] Preferably, the air intake mechanism includes: an air intake duct fixed in the mounting slot, a cooling fan a fixed in the cabinet by a mounting base, one end of the air intake duct extending into the mounting base, an air intake filter plate slidably connected to the air intake duct, and a cleaning mechanism adapted to the air intake filter plate provided on the support platform, the air intake filter plate being cleaned by the cleaning mechanism, and a grille cover provided on the air intake duct.

[0007] Preferably, the exhaust mechanism includes: a loading plate fixed inside the cabinet, and a plurality of cooling fans b fixed on the loading plate; an exhaust channel connecting the cabinet and the baffle is provided; and an exhaust pipe connected to the interior is fixed on the baffle; and an exhaust filter plate is slidably passed through the exhaust pipe via a guide plate.

[0008] Preferably, the cleaning mechanism includes: a rod fixed to the air inlet filter plate, the rod slidingly penetrating the air inlet duct; a connecting ring fixed to the rod; a spring sleeved on the rod; the two ends of the spring being fixed to the air inlet duct and the connecting ring respectively; several guide plates fixed in the mounting groove; a transmission plate slidably connected to the guide plates; a pulley fixed to one end of the rod near the transmission plate; the pulley abutting against the transmission plate; a groove communicating with the mounting groove on the support platform; a rotating shaft rotatably connected to the support platform; a transmission wheel abutting against the transmission plate fixed on the rotating shaft; a drive motor fixed to the support platform via the support plate; and a transmission shaft rotatably connected to the support platform and coaxially fixed with the output shaft of the drive motor; the transmission shaft and the rotating shaft are driven by two bevel gears meshing, both of which are located within the groove.

[0009] Preferably, the air intake duct is provided with a cleaning component adapted to the air intake filter plate. The cleaning component includes: a mounting rod fixed on the air intake duct, a support plate rotatably connected to the mounting rod, and a brush roller that contacts the air intake filter plate rotatably connected to the support plate. Two loading rods are fixed on each support plate, and an elastic sheet is fixed together on the two loading rods.

[0010] Preferably, a differential pressure sensor is fixed on the air intake duct, and a temperature sensor and a temperature controller are fixed inside the cabinet, with the temperature sensor and the temperature controller being electrically connected.

[0011] Preferably, the transmission plate has a trapezoidal cross-section, and the side of the transmission plate that contacts the pulley is an inclined surface.

[0012] Preferably, the support platform is provided with a storage slot, and a collection box is slidably connected in the storage slot, and the support platform is provided with a dust collection trough that communicates with the installation slot.

[0013] Preferably, the air inlet filter plate is located directly above the ash trough, and the collection box is located directly below the air inlet filter plate.

[0014] Preferably, the air intake duct is fixed with a guide groove, and the air intake filter plate is slidably connected to the guide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention provides a ventilation and heat dissipation structure for an electrical cabinet. Through the cooperation between the air intake mechanism and the air exhaust mechanism, when the cabinet relies on natural ventilation for heat dissipation, the efficiency is low and the heat dissipation demand cannot be met, the air intake mechanism and the air exhaust mechanism will start to play their role and intervene in the heat dissipation process of the cabinet, introducing forced airflow into the cabinet, thereby achieving effective heat dissipation of the cabinet. This method can effectively deal with the problem of insufficient natural ventilation heat dissipation capacity, ensure that the temperature inside the cabinet is maintained within a reasonable range, avoid various faults or damages that may be caused by poor heat dissipation, and thus ensure the normal operation of the equipment inside the cabinet.

[0016] 2. This invention provides a ventilation and heat dissipation structure for an electrical cabinet. Through the setting of the cleaning mechanism, the air inlet filter plate can be effectively driven to achieve regular reciprocating vibration. During this process, the air inlet filter plate generates a certain force due to vibration. This force can effectively shake off the dust attached to its surface, which can significantly reduce the occurrence of air inlet filter plate blockage caused by dust accumulation. In this way, it can ensure that the air inlet filter plate always maintains good ventilation performance and keeps its ventilation volume at a relatively ideal level. The good ventilation state of the air inlet filter plate is necessary to meet the heat dissipation and air intake requirements of the cabinet during long-term operation, thus providing a reliable guarantee for the normal operation of the cabinet.

[0017] 3. This invention provides an electrical cabinet ventilation and heat dissipation structure. By setting up cleaning components, it can effectively clean the dust that could not be shaken off from the air inlet filter plate, ensuring that the air inlet filter plate can always maintain its excellent filtration performance and avoid the situation of filter plate blockage due to dust accumulation. It can not only maintain the cleanliness of the air inlet filter plate, but also effectively reduce the occurrence of reduced heat dissipation efficiency due to air intake obstruction, thereby ensuring the stability and reliability of the overall operation of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the cabinet's open door state structure according to the present invention; Figure 4 This is a partial side sectional view of the cabinet structure of the present invention; Figure 5 This is a schematic diagram of the main cross-sectional structure of the baffle of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of the structure of region A in the middle; Figure 7 This is a schematic diagram of the side sectional structure of the cabinet of the present invention; Figure 8 This is a side sectional view of the support platform and cabinet structure of the present invention; Figure 9 This is a schematic diagram of the support platform structure of the present invention; Figure 10 This is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 11 for Figure 10 Enlarged schematic diagram of the structure of region B in the middle; Figure 12 This is a side sectional view of the air intake duct structure of the present invention; Figure 13 for Figure 12 Enlarged schematic diagram of the structure of region C in the middle; Figure 14 This is a schematic diagram of the cleaning component of the present invention.

[0020] Drawing number descriptions: 1. Support platform; 2. Cabinet; 3. Mounting slot; 4. Air inlet mechanism; 5. Baffle; 6. Exhaust mechanism; 7. Air inlet duct; 8. Mounting base; 9. Cooling fan a; 10. Air inlet filter plate; 11. Cleaning mechanism; 12. Grille cover; 13. Loading plate; 14. Cooling fan b; 15. Exhaust duct; 16. Exhaust pipe; 17. Exhaust filter plate; 18. Rod; 19. Connecting ring; 20. Spring; 21. Guide. 21. Plate; 22. Transmission plate; 23. Pulley; 24. Groove; 25. Shaft; 26. Transmission wheel; 27. Drive motor; 28. Transmission shaft; 29. ​​Bevel gear; 30. Cleaning component; 31. Mounting rod; 32. Support plate; 33. Brush roller; 34. Elastic sheet; 35. Differential pressure sensor; 36. Temperature sensor; 37. Temperature controller; 38. Storage tank; 39. Collection box; 40. Ash chute; 41. Guide chute; 42. Loading rod. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0023] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0024] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0025] Example 1: Please refer to Figures 1-14 An electrical cabinet ventilation and heat dissipation structure includes a support platform 1 and a cabinet 2 fixed on the support platform 1. It also includes: a mounting groove 3 on the support platform 1, and an air inlet mechanism 4 is provided in the mounting groove 3. The air inlet mechanism 4 is used to send in cold air from outside the cabinet 2. A baffle 5 is fixed on the cabinet 2, and an exhaust mechanism 6 is provided on the cabinet 2. The exhaust mechanism 6 forcibly extracts hot air from inside the cabinet 2. The cabinet 2 is equipped with a temperature sensor 36 and a temperature controller 37. The temperature sensor 36 and the temperature controller 37 are electrically connected. The temperature sensor 36 collects the temperature in real time and transmits the temperature signal to the temperature controller 37, which compares it with the preset value. When the temperature exceeds the limit, the temperature controller 37 activates the exhaust mechanism 6 and the air intake mechanism 4. Under the action of positive and negative pressure, cold air enters the cabinet 2 and flows through the heating element for heat exchange, so that the hot air in the cabinet 2 is discharged until the temperature in the cabinet 2 is reduced to a safe range. At this point, the exhaust mechanism 6 and the air intake mechanism 4 are stopped, and the natural ventilation and heat dissipation mode is restored, so as to achieve the purpose of energy-saving temperature control. In this scheme, when the load power of the electrical components inside the cabinet 2 is small and the heat density is low, natural ventilation is used for heat dissipation. The electrical components inside the cabinet 2 generate heat during operation, thereby heating the air inside the cabinet 2. The hot air has a low density and naturally flows upward. However, the cold air outside the cabinet 2 has a high density and enters the cabinet 2 from the air inlet mechanism 4. The hot and cold air form a natural convection, carrying the heat inside the cabinet 2 to the outside, thus achieving heat dissipation. It should be noted that when the natural ventilation and heat dissipation efficiency inside the cabinet 2 is insufficient, the air intake mechanism 4 and the exhaust mechanism 6 work together to provide forced airflow to the cabinet 2 to dissipate heat and solve the problem of insufficient natural ventilation and heat dissipation. It should also be noted that the temperature sensor 36 and the temperature controller 37 are existing products. The temperature sensor 36 is a detection element that converts the physical quantity of temperature into a measurable electrical signal. The temperature controller 37 is a control unit that receives the signal from the temperature sensor 36, performs logical operations, threshold judgments, and outputs control commands to achieve precise temperature detection and control within the cabinet 2. This is a standard setting in the field, so it will not be described in detail here.

[0026] Furthermore, the air intake mechanism 4 includes: an air intake duct 7 fixed in the mounting groove 3, a cooling fan a9 fixed in the cabinet 2 by a mounting base 8, and one end of the air intake duct 7 extending into the mounting base 8. An air intake filter plate 10 is slidably connected to the air intake duct 7, and a grille cover 12 is provided on the air intake duct 7. The grille cover 12 is used to filter and block large particulate impurities in the intake air. Among them, a differential pressure sensor 35 is fixed on the air intake duct 7. By setting the differential pressure sensor 35, the filter blockage is monitored in real time, thereby adjusting the output power of the cooling fan a9, so as to better ensure that the air intake in the cabinet 2 meets the heat dissipation requirements. It should be noted that the filtration accuracy of the air inlet filter plate 10 is less than that of the grille cover 12. The grille cover 12 filters and blocks large-particle impurities, and the air inlet filter plate 10 performs secondary fine filtration on the intake air, thereby ensuring that the cold air entering the cabinet 2 for heat dissipation has a high purity, thus preventing dust from entering and covering electrical components. A guide groove 41 is fixed on the air intake duct 7, and the air intake filter plate 10 is slidably connected to the guide groove 41. The addition of the guide groove 41 plays a guiding role for the air intake filter plate 10, ensuring that the air intake filter plate 10 maintains relative stability and smoothness when it moves under force. The length of the guide groove 41 is greater than the maximum movement range of the air intake filter plate 10, so as to avoid the air intake filter plate 10 moving too far and causing it to detach from the guide groove 41. Furthermore, the exhaust mechanism 6 includes: a loading plate 13 fixed inside the cabinet 2, and a plurality of cooling fans b14 fixed on the loading plate 13; an exhaust channel 15 connected between the cabinet 2 and the baffle 5; and an exhaust pipe 16 connected to the interior fixed on the baffle 5; and an exhaust filter plate 17 slidably passing through the exhaust pipe 16 via a guide plate. Among them, the cooling fan b14 is located at the top inside the cabinet 2 and directly above the electrical components inside the cabinet 2, so that it can carry away a large amount of hot air and output it to the outside of the cabinet 2, effectively meeting the heat dissipation requirements of the cabinet 2. It should be noted that the exhaust filter plate 17 is pull-out, which makes it convenient for staff to pull out the exhaust filter plate 17 and perform daily maintenance and cleaning. The baffle 5 is trapezoidal in shape, which can provide a certain degree of shielding and protection for the cabinet 2. In this solution, the forced airflow cooling principle for cabinet 2 is as follows: Positive pressure air intake: Cooling fan a9 draws cold air from outside cabinet 2 and sends it into cabinet 2 after being pressurized through air intake duct 7, making the air pressure inside cabinet 2 higher than outside, thereby pushing hot air out of cabinet 2 from exhaust pipe 16. During this process, external dust can be effectively prevented from entering through non-air intake vents. Negative pressure exhaust: Driven by the cooling fan b14, hot air inside the cabinet 2 is forcibly extracted, creating negative pressure inside the cabinet 2. External cold air is automatically replenished from the air intake duct 7, thereby achieving the purpose of cooling the cabinet 2.

[0027] Example 2: Please refer to Figures 8-12 This embodiment further explains the first embodiment, the difference being the method of cleaning the air inlet filter plate 10.

[0028] Specifically, the support platform 1 is equipped with a cleaning mechanism 11 adapted to the air inlet filter plate 10. The cleaning mechanism 11 cleans the air inlet filter plate 10. The cleaning mechanism 11 includes: a rod 18 fixed on the air inlet filter plate 10, and the rod 18 is slidably connected to the air inlet duct 7. A connecting ring 19 is fixed on the rod 18, and a spring 20 is sleeved on the rod 18. The two ends of the spring 20 are fixed to the air inlet duct 7 and the connecting ring 19, respectively. Several guide plates 21 are fixed in the mounting groove 3, and a transmission plate 22 is slidably connected to the guide plates 21. The rod 18 is close to the air inlet filter plate 10. A pulley 23 is fixed at one end of the transmission plate 22, and the pulley 23 abuts against the transmission plate 22. A groove 24 communicating with the mounting groove 3 is provided on the support platform 1, and a rotating shaft 25 is rotatably connected to the support platform 1. A transmission wheel 26 abutting against the transmission plate 22 is fixed on the rotating shaft 25. A drive motor 27 is fixed on the support platform 1 through a support plate, and a transmission shaft 28 coaxially fixed to the output shaft of the drive motor 27 is rotatably connected to the support platform 1. The transmission shaft 28 and the rotating shaft 25 are driven by two bevel gears 29 meshing. Both bevel gears 29 are located in the groove 24. The transmission plate 22 has a trapezoidal cross-section, and the side of the transmission plate 22 that contacts the pulley 23 is inclined. The shape of the transmission plate 22 ensures that when the transmission plate 22 and the pulley 23 are pressed together, the rod 18 is driven to move back and forth, thus avoiding jamming during the pressing process. It should be noted that the cleaning mechanism 11 can effectively drive the air intake filter plate 10 to vibrate regularly. During this process, the air intake filter plate 10 generates a certain force due to the vibration. This force can effectively shake off the dust attached to its surface, which can significantly reduce the occurrence of blockage of the air intake filter plate 10 caused by dust accumulation. In this way, it can ensure that the air intake filter plate 10 always maintains good ventilation performance and keeps its ventilation volume at a relatively ideal level. The good ventilation of the air intake filter plate 10 can meet the heat dissipation and air intake requirements of the cabinet 2 during long-term operation, thus providing a reliable guarantee for the normal operation of the cabinet 2. In this solution, the cleaning mechanism 11 cleans the air intake filter plate 10. The principle is as follows: Driven by the drive motor 27, the transmission shaft 28 rotates synchronously. The meshing transmission of the bevel gear 29 drives the rotating shaft 25 to rotate synchronously, causing the transmission wheel 26 to rotate synchronously. The squeezing transmission action of the transmission plate 22 and the two transmission plates 22 causes the transmission plate 22 to move along the guide plate 21 after being subjected to force. The squeezing action of the transmission plate 22 and the pulley 23 then drives the rod 18 to move back and forth. The elasticity of the spring 20 ensures that the pulley 23 always maintains contact with the transmission plate 22, thereby ensuring that the transmission plate 22 and the transmission wheel 26 are in a close contact state. This causes the air intake filter plate 10 to reciprocate and shake along the guide groove 41, and the shaking of the air intake filter plate 10 shakes off the dust.

[0029] Example 3: Please refer to Figure 13 and Figure 14 This embodiment further illustrates other embodiments, with the difference being that the cleaning effect of the air inlet filter plate 10 is optimized.

[0030] Specifically, the air intake duct 7 is provided with a cleaning component 30 that is compatible with the air intake filter plate 10. The cleaning component 30 includes: a mounting rod 31 fixed on the air intake duct 7, a support plate 32 rotatably connected to the mounting rod 31, and a brush roller 33 that contacts the air intake filter plate 10 rotatably connected to the support plate 32. Two loading rods 42 are fixed on the support plate 32, and an elastic sheet 34 is fixed together on the two loading rods 42. The support platform 1 is provided with a storage slot 38, and a collection box 39 is slidably connected in the storage slot 38. The support platform 1 is also provided with a dust collection trough 40 that is connected to the installation slot 3. The addition of the collection box 39 and the dust collection trough 40 facilitates the centralized collection of falling dust, which is beneficial for the subsequent centralized treatment of dust. The air inlet filter plate 10 is located directly above the dust collection trough 40, and the collection box 39 is located directly below the air inlet filter plate 10. It should be noted that by setting up the cleaning component 30, the dust that could not be shaken off on the air intake filter plate 10 can be effectively cleaned, ensuring that the air intake filter plate 10 can always maintain its excellent filtration performance and avoid the situation of filter plate blockage due to dust accumulation. It can not only maintain the cleanliness of the air intake filter plate 10, but also effectively reduce the occurrence of situations such as reduced heat dissipation efficiency due to air intake obstruction, thereby ensuring the overall stability and reliability of the equipment operation. In this solution, the cleaning principle of the cleaning component 30 for cleaning the air intake filter plate 10 is as follows: the cleaning mechanism 11 drives the air intake filter plate 10 to move back and forth, and the friction between the air intake filter plate 10 and the brush roller 33 is used to clean the dust that has not been shaken off after the air intake filter plate 10 is rubbed. The cleaned dust falls into the collection box 39 and is collected by the collection box 39.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. An electrical cabinet ventilation and heat dissipation structure, comprising a support platform (1) and a cabinet (2) fixed on the support platform (1); Its features are, Also includes: An installation slot (3) is provided on the support platform (1), and an air inlet mechanism (4) is provided in the installation slot (3). The air inlet mechanism (4) is used to send cold air from outside the cabinet (2). A baffle (5) is fixed on the cabinet (2), and an exhaust mechanism (6) is provided on the cabinet (2). The exhaust mechanism (6) forces the hot air inside the cabinet (2) out.

2. The ventilation and heat dissipation structure for an electrical cabinet according to claim 1, characterized in that, The air intake mechanism (4) includes: an air intake duct (7) fixed in the mounting slot (3), a cooling fan a (9) fixed in the cabinet (2) by a mounting seat (8), and one end of the air intake duct (7) extending into the mounting seat (8). An air intake filter plate (10) is slidably connected to the air intake duct (7), and a cleaning mechanism (11) adapted to the air intake filter plate (10) is provided on the support platform (1). The air intake filter plate (10) is cleaned by the cleaning mechanism (11), and a grille cover (12) is provided on the air intake duct (7).

3. The ventilation and heat dissipation structure for an electrical cabinet according to claim 1, characterized in that, The exhaust mechanism (6) includes: a loading plate (13) fixed inside the cabinet (2), and a plurality of cooling fans b (14) fixed on the loading plate (13); an exhaust channel (15) connected between the cabinet (2) and the baffle (5); and an exhaust pipe (16) connected to the interior fixed on the baffle (5); and an exhaust filter plate (17) slidably passing through the exhaust pipe (16) via a guide plate.

4. The ventilation and heat dissipation structure for an electrical cabinet according to claim 2, characterized in that, The cleaning mechanism (11) includes: a rod (18) fixed on the air inlet filter plate (10), and the rod (18) is slidably connected to the air inlet duct (7). A connecting ring (19) is fixed on the rod (18), and a spring (20) is sleeved on the rod (18). The two ends of the spring (20) are fixed to the air inlet duct (7) and the connecting ring (19) respectively. Several guide plates (21) are fixed in the mounting groove (3), and a transmission plate (22) is slidably connected to the guide plates (21). A pulley (23) is fixed at one end of the rod (18) near the transmission plate (22), and the pulley (23) is connected to the transmission plate (22). The transmission plate (22) abuts against the support platform (1), and a groove (24) connected to the mounting groove (3) is provided on the support platform (1). A rotating shaft (25) is rotatably connected to the support platform (1). A transmission wheel (26) that abuts against the transmission plate (22) is fixed on the rotating shaft (25). A drive motor (27) is fixed on the support platform (1) through the support plate. A transmission shaft (28) that is coaxially fixed to the output shaft of the drive motor (27) is rotatably connected to the support platform (1). The transmission shaft (28) and the rotating shaft (25) are driven by two bevel gears (29). Both bevel gears (29) are located in the groove (24).

5. The ventilation and heat dissipation structure for an electrical cabinet according to claim 4, characterized in that, The air intake duct (7) is provided with a cleaning component (30) adapted to the air intake filter plate (10). The cleaning component (30) includes: a mounting rod (31) fixed on the air intake duct (7), a support plate (32) rotatably connected to the mounting rod (31), and a brush roller (33) in contact with the air intake filter plate (10) rotatably connected to the support plate (32). Two loading rods (42) are fixed on the support plate (32), and an elastic sheet (34) is fixed on both loading rods (42).

6. The ventilation and heat dissipation structure for an electrical cabinet according to claim 2, characterized in that, A differential pressure sensor (35) is fixed on the air intake duct (7), and a temperature sensor (36) and a temperature controller (37) are fixed in the cabinet (2), respectively. The temperature sensor (36) and the temperature controller (37) are electrically connected.

7. The ventilation and heat dissipation structure for an electrical cabinet according to claim 4, characterized in that, The transmission plate (22) has a trapezoidal cross-section, and the side of the transmission plate (22) that contacts the pulley (23) is an inclined surface.

8. The ventilation and heat dissipation structure for an electrical cabinet according to claim 1, characterized in that, The support platform (1) is provided with a storage slot (38), and a collection box (39) is slidably connected in the storage slot (38). The support platform (1) is provided with a dust collection trough (40) that is connected to the installation slot (3).

9. The ventilation and heat dissipation structure for an electrical cabinet according to claim 2, characterized in that, The air inlet filter plate (10) is located directly above the ash trough (40), and the collection box (39) is located directly below the air inlet filter plate (10).

10. The ventilation and heat dissipation structure for an electrical cabinet according to claim 2, characterized in that, The air intake duct (7) is fixed with a guide groove (41), and the air intake filter plate (10) is slidably connected to the guide groove (41).

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