A dust removal and heat dissipation structure for an outdoor switch cabinet

Abstract

The present invention discloses a dust removal and heat dissipation structure for an outdoor switch cabinet, which includes a box body. A heat dissipation air duct penetrating the box body is provided on one side of the box body away from the outdoor switch cabinet, and a fan for extracting external air and enabling the external air to enter the outdoor switch cabinet along the heat dissipation air duct is provided on one side of the box body close to the outdoor switch cabinet. In the present invention, by providing a filter screen at the heat dissipation air duct, dust in the external air is prevented from entering the outdoor switch cabinet, and the dust adhering to the surface of the filter screen is brushed off by controlling the lifting drive mechanism to drive the dust brushing mechanism, so that the dust on the filter screen can be timely processed. By providing a blocking mechanism, the connection between the heat dissipation air duct and the external environment and the outdoor switch cabinet can be cut off when the dust brushing mechanism brushes off the dust, so that the brushed-off dust will not disperse into the external environment and the outdoor switch cabinet, reducing the pollution to the surrounding environment, and at the same time facilitating the subsequent centralized cleaning of the brushed-off dust by maintenance personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly to a dust removal and heat dissipation structure for an outdoor switch cabinet. Background Art

[0002] Outdoor switch cabinets are widely used in power systems to control and protect electrical equipment. To ensure the normal operation of the switch cabinet, effective heat dissipation must be carried out, and ventilation structures such as air conditioners and fans are usually set up.

[0003] However, during the ventilation process, dust in the external air will inevitably enter the interior of the switch cabinet. The accumulated dust will affect the heat dissipation effect of the equipment and even cause equipment failures. Therefore, it is necessary to develop a heat dissipation structure that can remove dust in a timely manner to ensure the efficient operation and long life of the switch cabinet. Summary of the Invention

[0004] The purpose of the present invention is to provide a dust removal and heat dissipation structure for an outdoor switch cabinet to achieve the purpose of timely dust removal in view of the above deficiencies.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: A dust removal and heat dissipation structure for an outdoor switch cabinet includes a box body. A heat dissipation air duct penetrating the box body is provided on one side of the box body away from the outdoor switch cabinet. A fan for extracting external air and allowing the external air to enter the outdoor switch cabinet along the heat dissipation air duct is provided on one side of the box body close to the outdoor switch cabinet. A filter screen for filtering dust is provided in the heat dissipation air duct of the box body. A dust removal chamber communicated with the heat dissipation air duct is provided at the bottom of the box body. A dust brushing mechanism capable of scraping the dust on the surface of the filter screen during the lifting and moving process and collecting the dust into the dust removal chamber is provided in the dust removal chamber. A lifting drive mechanism for driving the dust brushing mechanism to move up and down is provided on the box body. Two blocking mechanisms capable of blocking both ends of the heat dissipation air duct during the process of the dust brushing mechanism scraping the dust on the surface of the filter screen are provided in the heat dissipation air duct of the box body. The filter screen is located between the two blocking mechanisms.

[0006] Further, the dust brushing mechanism includes two brush strip assemblies arranged in the dust removal chamber and driven to move up and down by the lifting drive mechanism, and a plurality of partition plates located at the bottom of the brush strip assemblies. The filter screen is located between the two brush strip assemblies. The plurality of partition plates divide the dust removal chamber into a plurality of chambers. A piston plate is movably provided in each of the plurality of chambers. The horizontal cross-sectional area of the piston plate is equal to the horizontal cross-sectional area of the chamber where it is located. A connection component for driving the piston plate to move up and down together with the brush strip assemblies when the brush strip assemblies move up and down is provided between the piston plate and the two brush strip assemblies.

[0007] Further, the brush strip assembly includes a mounting strip. A strip brush that can move closer to and away from one side of the mounting strip is movably arranged on one side of the mounting strip close to the filter screen. Guide posts inserted into the mounting strip are slidably arranged at both ends of the mounting strip in the length direction. One end of the guide post located inside the mounting strip is fixedly connected to the strip brush. Guide grooves for the guide posts to move closer to and away from the filter screen are formed at both ends of the mounting strip in the length direction. One end of the guide post located outside the mounting strip is inserted into the box body. A guiding groove for guiding the guide post to move in the guide groove when the guide post moves up and down is formed in the box body;

[0008] The guiding groove is composed of a rising section, a falling section, an extending section, and a retracting section. The rising section and the falling section are arranged in parallel. The extending section and the retracting section are arranged in parallel and the ground clearance on the side of the extending section away from the filter screen is less than the ground clearance on the side of the extending section close to the filter screen. The top end of the rising section is connected to the falling section through the extending section. The bottom end of the rising section is connected to the falling section through the retracting section. When the guide post is in the falling section, the strip brush is in contact with the filter screen. When the guide post is in the rising section, the strip brush is not in contact with the filter screen.

[0009] Further, the connecting assembly includes a hook fixedly arranged at the bottom of the brush strip assembly and a sleeve fixedly arranged at the top of the piston plate. A telescopic cavity is formed in the sleeve. A connecting rod is arranged between the hook and the sleeve and the bottom end of the connecting rod is inserted into the telescopic cavity. A collar is rotatably arranged at one end of the connecting rod located inside the telescopic cavity. A compression spring is arranged between the bottom end of the collar and the sleeve. Claw slides are arranged at the bottom end of the connecting rod and the bottom of the telescopic cavity. A plurality of annularly distributed inclined grooves are arranged at one end of the two claw slides close to each other. The number of the inclined grooves is equal to the number of the piston plates. When the compression spring is in the natural state, the two claw slides do not contact each other and the protruding part of the top claw slide is located above the inclined groove of the bottom claw slide. A plurality of push blocks are arranged on the outer wall of one end of the connecting rod located inside the telescopic cavity. The push blocks are located above the collar and the number of the collars is equal to the number of the piston plates. A pressing block in contact with one of the push blocks is arranged at the top of the telescopic cavity. The surfaces of the pressing block and the push block in contact with each other are both inclined surfaces. A convex block is arranged on the outer wall of the top end of the connecting rod;

[0010] When the top claw slide moves closer to the bottom claw slide, the protruding part of the top claw slide moves down along the inclined groove and drives the connecting rod to rotate, so that the convex block on one of the connecting rods rotates into the upward movement area of the hook, and the convex block is driven to move upward together when the hook moves upward.

[0011] Further, a limiting block for cooperating with the pressing block to limit the rotation of adjacent push blocks is also arranged at the top of the telescopic cavity. When the compression spring is in the natural state, one of the push blocks is located between the pressing block and the limiting block.

[0012] Further, the plugging mechanism includes a plurality of blades rotatably arranged in the heat dissipation air duct through torsion springs. The plurality of blades are arranged horizontally up and down. When the torsion springs are in a natural state, the plurality of blades do not contact each other. Synchronous gears are arranged at the blade rotation shafts, and a rack meshing with the plurality of synchronous gears is slidably arranged on the box body;

[0013] The brush strip assembly is located between the blade rotation shaft and the filter screen. When the brush strip assembly moves upward, it pushes the bottom blade to make the plurality of blades rotate and fit together.

[0014] Further, a maintenance panel for allowing maintenance personnel to clean the dust in the dust removal cavity is detachably arranged on the side of the box body away from the fan.

[0015] The beneficial effects of the present invention are reflected in:

[0016] In the present invention, by arranging a filter screen at the heat dissipation air duct, dust in the external air is prevented from entering the outdoor switch cabinet, and the lifting drive mechanism is controlled to drive the dust brushing mechanism to brush the dust adhered to the surface of the filter screen, so that the dust on the filter screen can be processed in time. By arranging the plugging mechanism, the connection between the heat dissipation air duct and the external environment and the outdoor switch cabinet can be cut off when the dust brushing mechanism brushes the dust, so that the brushed dust will not float to the external environment and the outdoor switch cabinet, reducing the pollution to the surrounding environment, and at the same time, it is also convenient for maintenance personnel to centrally clean the brushed dust later. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of the present invention;

[0018] Figure 2 is a structural sectional view of the dust removal cavity of the present invention;

[0019] Figure 3 is Figure 2 a partial enlarged schematic view of the place A shown;

[0020] Figure 4 is a partial view of the brush strip assembly of the present invention;

[0021] Figure 5 is a structural view of the guiding groove of the present invention;

[0022] Figure 6 is a partial sectional view of the connection assembly of the present invention;

[0023] Figure 7 is a splicing schematic view of the hook and the convex block of the present invention;

[0024] Figure 8 is a partial view of the plugging mechanism of the present invention;

[0025] Figure 9 is Figure 8The partial enlarged schematic diagram at position B shown.

[0026] In the figure:

[0027] 1. Cabinet; 2. Fan; 3. Filter screen; 4. Dust-brushing mechanism; 41. Brush strip assembly; 411. Installation strip; 412. Strip brush; 413. Guide post; 414. Guide groove; 42. Partition plate; 43. Piston plate; 44. Connection assembly; 441. Hook; 442. Sleeve; 443. Connecting rod; 444. Collar; 445. Compression spring; 446. Sliding claw; 447. Pushed block; 448. Pressing block; 449. Convex block; 5. Lifting drive mechanism; 6. Sealing mechanism; 61. Blade; 62. Synchronous gear; 63. Rack. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figures 1-9 , the present invention discloses a dust removal and heat dissipation structure for an outdoor switch cabinet, including a cabinet 1. A heat dissipation air duct penetrating the cabinet 1 is provided on one side of the cabinet 1 away from the outdoor switch cabinet. A fan 2 for extracting external air and allowing the external air to enter the outdoor switch cabinet along the heat dissipation air duct is provided on one side of the cabinet 1 close to the outdoor switch cabinet. A filter screen 3 for filtering dust is provided in the heat dissipation air duct of the cabinet 1. A dust removal chamber communicating with the heat dissipation air duct is provided at the bottom of the cabinet 1. A dust-brushing mechanism 4 capable of scraping the dust on the surface of the filter screen 3 during the lifting movement and collecting the dust into the dust removal chamber is provided in the dust removal chamber. A lifting drive mechanism 5 for driving the dust-brushing mechanism 4 to move up and down is provided on the cabinet 1. Two sealing mechanisms 6 capable of sealing both ends of the heat dissipation air duct during the process of the dust-brushing mechanism 4 scraping the dust on the surface of the filter screen 3 are provided in the heat dissipation air duct of the cabinet 1. The filter screen 3 is located between the two sealing mechanisms 6.

[0030] In the present invention, by providing a filter screen 3 at the heat dissipation air duct, the dust in the external air is prevented from entering the outdoor switch cabinet, and by controlling the lifting drive mechanism 5 to drive the dust-brushing mechanism 4 to brush the dust adhering to the surface of the filter screen 3, the dust on the filter screen 3 can be processed in a timely manner. By providing the sealing mechanism 6, the connection between the heat dissipation air duct and the external environment and the outdoor switch cabinet can be cut off during the process of the dust-brushing mechanism 4 brushing the dust, so that the brushed-off dust will not float into the external environment and the outdoor switch cabinet, reducing the pollution to the surrounding environment, and at the same time facilitating the subsequent centralized cleaning of the brushed-off dust by maintenance personnel.

[0031] Preferably, the lifting drive mechanism 5 can be selected as a screw lifting slide table in the prior art. At the same time, a remote controller and a timing controller are provided on the lifting drive mechanism 5, so that maintenance personnel can not only remotely control the dust removal but also perform dust removal regularly, further improving the timeliness of dust removal.

[0032] In a specific implementation, a normally closed solenoid valve communicating with the heat dissipation air duct is provided at the top of the box body 1. The normally closed solenoid valve is opened when the dust brushing mechanism 4 works, so that the air when the dust brushing mechanism 4 works can enter and exit smoothly.

[0033] It should be noted that exhaust holes are provided in the outdoor switch cabinet, so that the hot air inside the outdoor switch cabinet can be discharged in time.

[0034] In an embodiment, the dust brushing mechanism 4 includes two brush strip assemblies 41 arranged in the dust removal cavity and driven to move up and down by the lifting drive mechanism 5, and a plurality of partition plates 42 located at the bottom of the brush strip assemblies 41. The filter screen 3 is located between the two brush strip assemblies 41. The plurality of partition plates 42 divide the dust removal cavity into a plurality of chambers. A piston plate 43 is movably arranged in each of the plurality of chambers. The horizontal cross-sectional area of the piston plate 43 is equal to the horizontal cross-sectional area of the chamber where it is located. A connecting component 44 for driving the piston plate 43 to move up and down together when the brush strip assemblies 41 move up and down is provided between the piston plate 43 and the two brush strip assemblies 41.

[0035] With such a design, the dust on both sides of the filter screen 3 can be removed simultaneously, and by using the suction force generated when the piston plate 43 moves down, the brushed dust will not overflow to the external environment and the outdoor switch cabinet, but will enter the plurality of chambers along the air flow direction. After that, it will settle on the top of the piston plate 43 after a long time of static settlement. Subsequently, maintenance personnel only need to clean the dust on the top of the piston plate 43.

[0036] In an embodiment, the brush strip assembly 41 includes a mounting strip 411. A strip brush 412 that can move towards and away from one side of the mounting strip 411 is movably arranged on one side of the mounting strip 411 close to the filter screen 3. Guide posts 413 inserted into the mounting strip 411 are slidably arranged at both ends of the mounting strip 411 in the length direction. One end of the guide post 413 located inside the mounting strip 411 is fixedly connected to the strip brush 412. Guide grooves for the guide posts 413 to move towards and away from the filter screen 3 are provided at both ends of the mounting strip 411 in the length direction. One end of the guide post 413 located outside the mounting strip 411 is inserted into the box body 1, and a guide groove 414 for guiding the guide post 413 to move in the guide groove when the guide post 413 moves up and down is provided in the box body 1;

[0037] The guiding groove 414 is composed of a rising section, a falling section, an extending section, and a retracting section. The rising section and the falling section are arranged in parallel. The extending section and the retracting section are arranged in parallel, and the ground clearance on the side of the extending section away from the filter screen 3 is less than the ground clearance on the side of the extending section close to the filter screen 3. The top of the rising section is connected to the falling section through the extending section, and the bottom of the rising section is connected to the falling section through the retracting section. When the guide post 413 is in the falling section, the strip brush 412 contacts the filter screen 3. When the guide post 413 is in the rising section, the strip brush 412 does not contact the filter screen 3.

[0038] With such a design, the brush bar assembly 41 does not contact the filter screen 3 during the upward movement, which can reduce the amount of dust carried in the exhausted air caused by the rising of the piston plate 43 and reduce environmental pollution. When the brush bar assembly 41 moves downward, the strip brush 412 can contact the filter screen 3 under the cooperation of the guide post 413 and the guiding groove 414, gradually scrape off the dust, and make the scraped dust flow into the air and follow it into multiple chambers.

[0039] It should be noted that a sealing strip is provided in the dust removal chamber, which can cooperate with the brush bar assembly 41 in the lower limit position to block the connection between the dust removal chamber and the heat dissipation air duct, so that the air sucked by the fan 2 for normal heat dissipation will pass through the filter screen 3 for filtration, ensuring the normal operation of the dust removal and heat dissipation structure.

[0040] In an embodiment, the connecting assembly 44 includes a hook 441 fixedly arranged at the bottom of the brush bar assembly 41 and a sleeve 442 fixedly arranged at the top of the piston plate 43. A telescopic cavity is formed in the sleeve 442. A connecting rod 443 is arranged between the hook 441 and the sleeve 442, and the bottom end of the connecting rod 443 is inserted into the telescopic cavity. A collar 444 is rotatably arranged at one end of the connecting rod 443 located in the telescopic cavity. A compression spring 445 is arranged between the bottom end of the collar 444 and the sleeve 442. Sliding claws 446 are arranged at the bottom end of the connecting rod 443 and the bottom of the telescopic cavity. Multiple annularly distributed inclined grooves are arranged at one end of the two sliding claws 446 close to each other. The number of inclined grooves is equal to the number of piston plates 43. When the compression spring 445 is in the natural state, the two sliding claws 446 do not contact each other, and the protruding part of the top sliding claw 446 is located above the inclined groove of the bottom sliding claw 446. Multiple push blocks 447 are arranged on the outer wall of one end of the connecting rod 443 located in the telescopic cavity. The push blocks 447 are located above the collar 444, and the number of collar 444 is equal to the number of piston plates 43. A pressing block 448 in contact with one of the push blocks 447 is arranged at the top of the telescopic cavity. The surfaces of the pressing block 448 and the push block 447 in contact with each other are inclined surfaces. A convex block 449 is arranged on the outer wall of the top end of the connecting rod 443;

[0041] When the top sliding claw 446 approaches the bottom sliding claw 446, the protruding part of the top sliding claw 446 moves down along the inclined groove and drives the connecting rod 443 to rotate, causing the bump 449 on one of the connecting rods 443 to rotate into the upward movement area of the hook 441, so that the bump 449 is driven to move upward together when the hook 441 moves upward.

[0042] With this design, when the brush strip assembly 41 moves down to the lowest point, it can drive the top sliding claw 446 to move down and contact the bottom sliding claw 446, and during the contact process, it drives the corresponding connecting rod 443 to rotate, changing the piston plate 43 that can be driven to move upward by the brush strip assembly 41. Thus, during the process of the brush strip assembly 41 reciprocating up and down to scrape off dust, through the up and down movement of different piston plates 43, the dust can be sucked into different chambers for collection, and the chambers that have collected dust will not be affected by the movement of the other piston plates 43.

[0043] In one embodiment, a limiting block for cooperating with the pressing block 448 to limit the rotation of the adjacent pushed block 447 is further provided at the top of the telescopic cavity. When the compression spring 445 is in a natural state, one of the pushed blocks 447 is located between the pressing block 448 and the limiting block.

[0044] With this design, during the process of the compression spring 445 being compressed and reset, the pushed blocks 447 close to the pressing block 448 will abut against each other and move between the pressing block 448 and the limiting block under the action of the inclined surface. At this time, it can not only drive the connecting rod 443 to rotate, making the protruding part of the sliding claw 446 at its bottom continue to be above the inclined groove of the bottom sliding claw 446, preparing for the next use, but also make the adjusted connecting rod 443 be restricted by the pressing block 448 and the limiting block, ensuring the position stability of the connecting rod 443 during the upward movement of the brush strip assembly 41.

[0045] In one embodiment, the blocking mechanism 6 includes a plurality of blades 61 rotatably arranged in the heat dissipation air duct through torsion springs. The plurality of blades 61 are arranged horizontally up and down. When the torsion springs are in a natural state, the plurality of blades 61 do not contact each other. Synchronous gears 62 are arranged at the rotating shafts of the blades 61, and a rack 63 meshing with the plurality of synchronous gears 62 is slidably arranged on the box body 1;

[0046] The brush strip assembly 41 is located between the rotating shaft of the blade 61 and the filter screen 3. When the brush strip assembly 41 moves upward, it pushes the bottom blade 61 to make the plurality of blades 61 rotate and fit together.

[0047] With this design, using the upward thrust of the brush strip assembly 41, the bottom blade 61 is pushed to flip, and under the cooperation of the synchronous gears 62 and the rack 63, the plurality of blades 61 rotate together and fit with each other to achieve the blocking purpose. After the dust removal operation is completed, the blades 61 can be reset under the action of the torsion springs, without affecting the normal circulation of air.

[0048] In specific implementation, when the torsion spring is in a natural state, the ground clearance of the blade 61 away from the filter screen 3 is less than the ground clearance of the blade 61 close to the filter screen 3, so that the blade 61 can block external rainwater from entering.

[0049] In one embodiment, a maintenance panel for allowing maintenance personnel to clean the dust in the dust removal cavity is detachably provided on the side of the box body 1 away from the fan 2, so that the maintenance personnel can conveniently and quickly clean the dust in multiple chambers.

[0050] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0051] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0052] In addition, "a plurality of" means two or more.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dust removal and heat dissipation structure for an outdoor switch cabinet, characterized in that: The invention comprises a box body, a side of the box body away from the outdoor switch cabinet is provided with a heat dissipation duct penetrating the box body, a side of the box body close to the outdoor switch cabinet is provided with a fan for extracting external air and allowing the external air to enter the outdoor switch cabinet along the heat dissipation duct, a filter screen for filtering dust is provided in the heat dissipation duct of the box body, a dust removal chamber connected to the heat dissipation duct is provided at the bottom of the box body, a dust removal chamber is provided in the dust removal chamber, and a dust brushing mechanism is provided in the dust removal chamber, which can scrape dust off the surface of the filter screen during the lifting and moving process and collect the dust into the dust removal chamber, a lifting and driving mechanism is provided on the box body for driving the dust brushing mechanism to move up and down, and two blocking mechanisms are provided in the heat dissipation duct of the box body, which can block the two ends of the heat dissipation duct when the dust brushing mechanism scrapes dust off the surface of the filter screen, and the filter screen is located between the two blocking mechanisms; The dust brushing mechanism comprises two brush bar assemblies which are arranged in the dust removal chamber and are driven by the lifting drive mechanism to move up and down, and a plurality of partition plates located at the bottom of the brush bar assemblies, wherein the plurality of partition plates divide the dust removal chamber into a plurality of chambers, and piston plates are movably arranged in the plurality of chambers, and connecting assemblies are arranged between the piston plate and the two brush bar assemblies for driving the piston plate to move up and down together when the brush bar assemblies move up and down; The connecting assembly comprises a hook fixedly arranged at the bottom of the brush strip assembly and a sleeve fixedly arranged at the top of the piston plate, a telescopic cavity is opened in the sleeve, a connecting rod is arranged between the hook and the sleeve, and the bottom end of the connecting rod is inserted into the telescopic cavity, a collar is rotatably arranged on one end of the connecting rod located in the telescopic cavity, a compression spring is arranged between the bottom end of the collar and the sleeve, sliding claws are arranged at the bottom end of the connecting rod and the bottom of the telescopic cavity, and a plurality of annularly distributed inclined grooves are arranged at the ends of the two sliding claws close to each other, and the number of the inclined grooves is equal to the number of piston plates. When the compression spring is in a natural state, the two sliding claws do not contact each other and the protrusion of the top sliding claw is located above the inclined groove of the bottom sliding claw. A plurality of push blocks are arranged on the outer wall of the end of the connecting rod located in the telescopic cavity, the push blocks are located at the top of the collar and the number of collars is equal to the number of piston plates, a pressure block in contact with one of the push blocks is arranged at the top of the telescopic cavity, and the side of the pressure block in contact with the push block is an inclined surface, and a convex block is arranged on the outer wall of the top end of the connecting rod; When the top sliding claw approaches the bottom sliding claw, the protrusion of the top sliding claw moves downward along the inclined groove and drives the connecting rod to rotate, so that the protrusion on one of the connecting rods rotates to the upward movement area of ​​the hook, so that the protrusion is driven to move upward when the hook moves upward.

2. The dust removal and heat dissipation structure of an outdoor switch cabinet according to claim 1, characterized in that: The filter screen is located between the two brush bar assemblies, and the horizontal cross-sectional area of ​​the piston plate is equal to the horizontal cross-sectional area of ​​the chamber in which it is located.

3. According to the dust removal and heat dissipation structure of the outdoor switch cabinet of claim 1, it is characterized in that: The brush bar assembly comprises a mounting bar, a strip brush which can move towards and away from the mounting bar is movably provided on one side of the mounting bar close to the filter screen, guide posts which are inserted into the mounting bar are slidably provided at both ends of the mounting bar in the length direction, one end of the guide post located in the mounting bar is fixedly connected to the strip brush, guide grooves for the guide post to move towards and away from the filter screen are provided at both ends of the mounting bar in the length direction, one end of the guide post located outside the mounting bar is inserted into the box body, and a guide groove is provided in the box body for guiding the guide post to move in the guide groove when the guide post moves up and down; The guide groove consists of an ascending section, a descending section, an extending section and a retracting section. The ascending section is arranged in parallel with the descending section, the extending section and the retracting section are arranged in parallel, and the height of the extending section away from the filter is smaller than the height of the extending section close to the filter. The top end of the ascending section is connected with the descending section through the extending section, and the bottom end of the ascending section is connected with the descending section through the retracting section. When the guide column is in the descending section, the strip brush contacts the filter, and when the guide column is in the ascending section, the strip brush does not contact the filter.

4. The dust removal and heat dissipation structure of an outdoor switch cabinet according to claim 1, characterized in that: The top of the telescopic cavity is also provided with a limiting block for cooperating with the pressure block to limit the rotation of the adjacent pushed blocks. When the compression spring is in a natural state, one of the pushed blocks is located between the pressure block and the limiting block.

5. The dust removal and heat dissipation structure of an outdoor switch cabinet according to claim 1, characterized in that: The blocking mechanism includes a plurality of blades that are rotatably arranged in the heat dissipation duct by a torsion spring, the plurality of blades are arranged horizontally up and down, the plurality of blades do not contact each other when the torsion spring is in a natural state, a synchronous gear is arranged at the blade shaft, and a rack meshing with the plurality of synchronous gears is slidably arranged on the box body; The brush bar assembly is located between the blade shaft and the filter screen. When the brush bar assembly moves upward, it pushes the bottom blade to make the multiple blades rotate and fit together.

6. The dust removal and heat dissipation structure of an outdoor switch cabinet according to claim 1, characterized in that: A maintenance panel for maintenance personnel to clean dust in the dust removal chamber is detachably provided on one side of the box body away from the fan.

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