Dustproof heat dissipation device, power distribution cabinet and transformer

Abstract

The application relates to the technical field of transformer substations, in particular to a dustproof heat dissipation device, a power distribution cabinet and a transformer. The dustproof assembly comprises a mounting block arranged on the side of a box body, a ventilation channel for heat dissipation is arranged in the middle part of the mounting block, a slot for mounting a filter structure is arranged on the side of the mounting block away from the box body, the filter structure comprises filter screens arranged opposite to the ventilation channel, the filter screens are arranged on the upper side and the lower side of the ventilation channel, and the filter screens are provided with insertion holes, the mounting block is provided with mounting grooves opposite to the insertion holes, sliding blocks are slidably arranged in the mounting grooves, the sliding blocks are connected with insertion pins which are inserted into or away from the insertion holes along with the movement of the sliding blocks, and the sliding blocks are further connected with driving mechanisms for driving the sliding blocks to slide; the heat dissipation assembly is arranged in the box body opposite to the ventilation channel, and the heat dissipation assembly comprises a heat dissipation fan, and the blowing direction of the heat dissipation fan is opposite to the ventilation channel. The application can quickly dissipate heat and conveniently and quickly replace the filter screens.

Description

Technical Field

[0001] This invention relates to the field of dustproof and heat dissipation technology, and in particular to a dustproof and heat dissipation device, a power distribution cabinet, and a transformer. Background Technology

[0002] Currently, the heat dissipation devices commonly used in electrical cabinets often contain dust and other impurities in the airflow. During the heat dissipation process, these impurities can easily enter and affect the reliability of the internal products, requiring frequent disassembly and cleaning. Heat dissipation performance is often a limiting factor for product performance in various fields. Therefore, it is necessary to provide a new dustproof heat dissipation device to solve the above problems.

[0003] Meanwhile, in existing technologies, the temperature rise of box-type switchgear is mainly caused by high summer temperatures and the heat generated by transformers and compensation capacitors inside the box. Due to the small size of box-type switchgear, the transformer room also occupies a small volume. The confined space makes heat dissipation in the transformer room very difficult. The transformer operates in a high-temperature environment for a long time, which will seriously increase its loss rate and failure rate. Therefore, heat dissipation is one of the main problems of existing box-type switchgear. To address the problem of poor heat dissipation, existing technologies generally use measures such as opening holes in the box or installing fans to reduce the heat of the transformer itself. However, these measures will allow dust in the air to enter and affect the transformer. In order to solve the problem of dust entry, filters are installed at the openings. However, the filters will become clogged after long-term use, which will affect the ventilation effect. Therefore, to address the above problems, it is necessary to improve the box-type switchgear. Summary of the Invention

[0004] In order to overcome the defects of the above-mentioned equipment heat dissipation problem, the technical problem to be solved by the present invention is to provide a dustproof heat dissipation device that can not only dissipate heat but also conveniently and quickly disassemble and install the filter screen, thereby preventing a series of problems caused by filter screen blockage due to dust entry.

[0005] Correspondingly, the second technical problem to be solved by the present invention is to provide a power distribution cabinet with dustproof and heat dissipation functions and with easy disassembly and assembly of the filter screen.

[0006] Accordingly, the third technical problem to be solved by the present invention is to provide a transformer that is installed inside a power distribution cabinet with dustproof and heat dissipation functions.

[0007] Regarding dustproof and heat dissipation devices, the present invention provides a dustproof and heat dissipation device, comprising:

[0008] A dustproof assembly includes a mounting block disposed on the side of a housing. A ventilation channel for heat dissipation is provided in the center of the mounting block. A slot for mounting a filter structure is provided on the side of the mounting block away from the housing. The filter structure includes a filter screen arranged opposite to the ventilation channel. Insertion holes are provided on the filter screen located above and below the ventilation channel. Mounting grooves are provided on the mounting block at positions opposite to each insertion hole. A slider is slidably disposed within each mounting groove. A pin is connected to each slider to move with the slider to insert into or away from the insertion hole. The slider is also connected to a drive mechanism for driving the slider to slide.

[0009] A heat dissipation assembly is disposed in a housing opposite to the ventilation channel. The heat dissipation assembly includes a cooling fan, and the airflow direction of the cooling fan is opposite to the ventilation channel.

[0010] As an improvement to the above technical solution, the driving mechanism includes a rotating shaft fixed in the mounting groove. The rotating shaft is located at the end of the mounting groove away from the slider. A pulley is rotatably mounted on the rotating shaft, and a cable is wound around the pulley. The end of the cable away from the housing is fixedly connected to the slider, and the other end of the cable is connected to a driving member. The driving member is used to pull the cable to drive the pulley to rotate. A first elastic member is provided in the mounting groove. One end of the first elastic member abuts against the slider, and the other end of the elastic member abuts against the end of the mounting groove away from the slider.

[0011] As an improvement to the above technical solution, an adjustment cavity is also provided in the middle of the side of the mounting block near the box body, and a through groove is provided between the adjustment cavity and the mounting groove;

[0012] The driving component includes a rotating rod that is vertically rotatably installed in the adjusting cavity. The top and bottom of the rotating rod are fixedly connected to a winding wheel. The end of the cable away from the slider passes through the through groove and is wound around the winding wheel. A rotating component is also connected to the middle of the rotating rod to drive the rotating rod to rotate.

[0013] As an improvement to the above technical solution, the rotating component includes a gear, a rack, a collar, a beveled pin, and a second elastic element. The gear is fixedly installed in the middle of the rotating rod. A connecting hole is provided between the adjusting cavity and the slot. One end of the beveled pin passes through the connecting hole and extends into the interior of the slot. The other end of the beveled pin is fixedly connected to a rack, which meshes with the gear. A collar is installed on the axial surface of the beveled pin. The beveled pin is movably inserted into the interior of the collar. A second elastic element is also sleeved on the beveled pin. One end of the second elastic element presses against the inner wall of the adjusting cavity, and the other end of the second elastic element presses against the collar.

[0014] As an improvement to the above technical solution, the end of the inclined pin located inside the slot is provided with a pressing inclined surface. The filter screen is inserted into the slot from the same side where the inclined pin is installed, and the pressing inclined surface at the end of the inclined pin is pressed to push the inclined pin into the adjustment cavity.

[0015] As an improvement to the above technical solution, a roller groove with the same extension direction as the mounting groove is also provided on the side of the mounting groove near the slot, and a roller adapted to the roller groove is installed in the slider.

[0016] Compared with the prior art, the beneficial effects of the dustproof and heat dissipation device of the present invention are as follows:

[0017] By creating a ventilation channel in the middle of the mounting block, which extends through the interior of the corresponding side of the housing, and utilizing a cooling fan installed in the heat dissipation assembly, rapid ventilation and heat dissipation can be achieved. Insertion holes are provided on the upper part of the filter screen near the housing and the lower part of the opposite side, with each hole corresponding to a pin on the slider. This allows the slider to move within the mounting slot under the drive mechanism, moving the pins on the slider away from or into the corresponding insertion holes. This prevents airborne dust and impurities from clogging the filter screen due to prolonged use and infrequent replacement, thus preventing poor heat dissipation and other problems caused by dust and impurities. This design also facilitates convenient and quick replacement of old and new filters.

[0018] Regarding the power distribution cabinet equipped with a dustproof and heat dissipation device, the present invention provides a power distribution cabinet for solving the aforementioned technical problem, comprising a cabinet and the aforementioned dustproof and heat dissipation device. A protective canopy is installed on the top of the cabinet, and two of the aforementioned dustproof and heat dissipation devices are fixedly installed on opposite sides of the cabinet, one of which is located at the lower part of one side of the cabinet, and the other is located at the upper part of the opposite side of the cabinet.

[0019] Compared with the prior art, the advantages of the power distribution cabinet of the present invention are as follows:

[0020] The present invention discloses a power distribution cabinet, comprising a cabinet, a protective canopy, and a heat dissipation and dust prevention device, wherein the heat dissipation and dust prevention device is fixedly installed on the lower part of one side of the cabinet and the upper part of the opposite side. In the prior art, in order to solve the problem of poor heat dissipation, measures such as opening holes in the cabinet or installing fans are adopted. However, such measures will allow dust in the air to enter and affect the stable operation of the equipment inside the power distribution cabinet. However, the present invention, by opening a ventilation channel in the middle of the mounting block and installing a cooling fan inside the cabinet, can not only achieve rapid ventilation and heat dissipation, but also avoid a series of effects caused by dust and impurities in the air entering the power distribution cabinet as in the prior art.

[0021] In addition, in existing technologies, to prevent dust from entering the distribution cabinet, filters are usually installed at the openings in the cabinet. However, these filters are often exposed to the air and inconvenient to replace. After prolonged use, the filters become severely clogged, affecting the ventilation and heat dissipation of the distribution cabinet. This invention, however, provides a slot for installing the filter on the side of the mounting block away from the cabinet. Two insertion holes are provided at the top and bottom of the filter side, corresponding to pins on the slider. Driven by a driving mechanism, the slider moves within the mounting slot, moving the pins away from and into the corresponding insertion holes. This allows for convenient and quick installation and removal of the filter, avoiding the problem of clogged filters due to prolonged use and inconvenient installation and removal, which affects the ventilation and heat dissipation of the equipment inside the distribution cabinet, thus ensuring the stable operation of the distribution cabinet.

[0022] Compared with the prior art, the beneficial effects of the transformer of the present invention are as follows:

[0023] The present invention provides a transformer, including the aforementioned distribution cabinet, in which a transformer body is installed. By placing the transformer body inside the distribution cabinet equipped with a dustproof and heat dissipation device, the transformer can not only be better ventilated and cooled during operation, but also prevent external dust and impurities from entering the distribution cabinet and affecting the reliability of the transformer's performance, thereby ensuring the stable use of the transformer. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the slot, mounting groove, and heat dissipation components of the dustproof heat dissipation device of the present invention.

[0025] Figure 2 This is a partial cross-sectional view of the slot, adjustment cavity and heat dissipation components of the dustproof heat dissipation device of the present invention.

[0026] Figure 3 This is a schematic diagram of the overall structure of the power distribution cabinet of the present invention;

[0027] Figure 4This is a cross-sectional view of the power distribution cabinet of the present invention.

[0028] In the diagram, 1. Dustproof component; 2. Heat dissipation component; 21. Cooling fan; 3. Mounting block; 4. Ventilation channel; 5. Filter structure; 51. Filter screen; 52. Socket; 6. Slot; 7. Mounting groove; 71. Roller groove; 8. Slider; 81. Pin; 82. Roller; 9. Drive mechanism; 91. Rotating shaft; 92. Pulley; 93. Cable; 94. First elastic element; 10. Drive element; 101. Rotating rod; 102. Rewinding wheel; 11. Adjusting cavity; 12. Through groove; 13. Rotating component; 131. Gear; 132. Rack; 133. Collar; 134. Inclined pin; 135. Second elastic element; 14. Connecting hole; 15. Housing; 16. Protective canopy; 17. Transformer body; 100. Dustproof and heat dissipation device; 110. Distribution cabinet. Detailed Implementation

[0029] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0033] like Figure 1 As shown, a preferred embodiment of the dust removal and heat dissipation device of the present invention includes: a dustproof component 1 and a heat dissipation component 2. The dustproof component 1 includes a mounting block 3 disposed on the side of the housing 15. A ventilation channel 4 for heat dissipation is opened in the middle of the mounting block 3. A slot 6 for installing a filter structure 5 is provided on the side of the mounting block 3 away from the housing 15. The filter structure 5 includes a filter screen 51 arranged opposite to the ventilation channel 4. Insertion holes 52 are opened on the filter screen 51 located on the upper and lower sides of the ventilation channel 4. Mounting grooves 7 are provided on the mounting block 3 at positions opposite to each insertion hole 52. A slider 8 is slidably disposed in each mounting groove 7. One end of each slider 8 is connected to a pin 81 that moves with the slider 8 to insert into or move away from the insertion hole 52. The other end of the slider 8 is connected to a driving mechanism 9 for driving the slider 8 to slide.

[0034] By opening a slot 6 on the side of the mounting block 3 away from the housing 15 and installing a filter structure 5 in the slot 6, optionally the filter structure 5 is a filter screen 51, dust and impurities from outside the housing 15 are prevented from entering the housing 15. By opening insertion holes 52 on the filter screen 51 located on the upper and lower sides of the ventilation channel 4, and providing a mounting groove 7 on the mounting block 3 at the position opposite to the insertion holes 52, a slider 8 is slidably arranged in the mounting groove 7, and one end of the slider 8 is connected to a pin 81, and the other end is connected to a drive mechanism 9. Thus, under the driving action of the drive mechanism 9, the slider 8 moves in the mounting groove 7 to drive the pin 81 away from or into the insertion hole 52, thereby realizing the replacement of the filter screen 51.

[0035] The heat dissipation component 2 is disposed inside the housing 15 opposite to the ventilation channel 4. The heat dissipation component 2 includes a cooling fan 21, and the air blowing direction of the cooling fan 21 is opposite to the ventilation channel 4. Optionally, the heat dissipation component 2 is connected to the housing 15 by a connecting bracket. It should be noted that other forms of connection structures that can achieve connection with the housing 15 are also applicable to this embodiment.

[0036] This application utilizes the relative positions of the cooling fan 21 and the ventilation channel 4 to enable better heat release within the enclosure 15.

[0037] Furthermore, the drive mechanism 9 includes a rotating shaft 91 fixed in the mounting groove 7. The rotating shaft 91 is located at the end of the mounting groove 7 away from the slider 8. A pulley 92 is rotatably mounted on the rotating shaft 91. A cable 93 is wound around the pulley 92. One end of the cable 93 away from the housing 15 is fixedly connected to the slider 8, and the other end is connected to the drive component 10. A roller groove 71 with the same extension direction as the mounting groove 7 is also provided on the side of the mounting groove 7 near the slot 6. A roller 82 adapted to the roller groove 71 is installed in the slider 8. A first elastic element 94 is also provided in the mounting groove 7. One end of the first elastic element 94 abuts against the slider 8, and the other end abuts against the end of the mounting groove 7 away from the slider 8. Optionally, the first elastic element 94 is a spring. It should be noted that other forms of elastic structures are also applicable to this embodiment as needed.

[0038] The drive unit 10 pulls the cable 93 to drive the pulley 92 to rotate. The rotation of the pulley 92 drives the cable 93 to pull the slider 8 to move. The movement of the slider 8 causes the roller 82 to roll inside the roller groove 71, so that the slider 8 moves stably in the mounting groove 7. Then, the movement of the slider 8 compresses the first elastic element 94 and drives the pin 81 to move away from the socket 52, so that the pin 81 is withdrawn from the socket 51 and moves into the mounting groove 7, thereby realizing the separation of the pin 81 from the socket 52.

[0039] Furthermore, such as Figure 2 As shown, an adjustment cavity 11 is also provided in the middle of the side of the mounting block 3 near the housing 15, and a through groove 12 is provided between the adjustment cavity 11 and the mounting groove 7.

[0040] The driving component 10 includes a rotating rod 101 that is vertically rotatable inside the adjusting cavity 11. The top and bottom of the rotating rod 101 are fixedly connected to a take-up wheel 102. The end of the cable 93 away from the slider 8 passes through the through groove 12 and is wound around the take-up wheel 102. A rotating component 13 is also connected to the middle of the rotating rod 101 to drive the rotating rod 101 to rotate. It should be noted that the connection between the cable 93 and the take-up wheel 102 can also be a fixed clamp, welding or any other form that can achieve a fixed connection.

[0041] The rotating component 13 drives the rotating rod 101 and the winding wheel 102 to rotate, thereby causing the winding wheel 102 to pull and wind the cable 93. The cable 93 pulls the slider 8 to move within the mounting groove 7, thereby driving the pin 81 to move and adjust.

[0042] Furthermore, the rotating component 13 includes a gear 131, a rack 132, a collar 133, a beveled pin 134, and a second elastic element 135. The gear 131 is fixedly installed in the middle of the rotating rod 101. A connecting hole 14 is provided between the adjusting cavity 11 and the slot 6. One end of the beveled pin 134 away from the gear 131 extends through the connecting hole 14 into the interior of the slot 6. The other end of the beveled pin 134 is fixedly connected to the rack 132, which meshes with the gear 131. The collar 133 is installed on the end of the beveled pin 134 near the rotating rod 101. The beveled pin 134 can be movably inserted into the rotating rod 101. Inside the collar 133, a second elastic element 135 is also fitted on the beveled pin 134. One end of the second elastic element 135 is pressed against the inner wall of the adjusting cavity 11, and the other end is pressed against the collar 133. Optionally, the beveled pin 134 is a cross pin. It should be noted that there are many structural forms of the beveled pin 134. Other structural forms of the beveled pin 134 that can achieve the above functions are also applicable to this embodiment. Optionally, the second elastic element 135 is a spring. It should be noted that other forms of elastic structures are also applicable to this embodiment.

[0043] Furthermore, the end of the beveled pin 134 located inside the slot 6 is provided with a pressing bevel. The filter screen 51 is inserted into the slot 6 from the same side where the beveled pin 134 is installed, and the pressing bevel at the end of the beveled pin 134 is pressed to push the beveled pin 134 into the adjustment cavity 11.

[0044] During the replacement of the old and new filter screens 51, the clean filter screen 51 is inserted into the slot 6 from the same side where the inclined pin 134 is installed. When the filter screen 51 touches the inclined pin 134, it applies force to the pressing inclined surface at the end of the inclined pin 134, pushing the inclined pin 134 into the adjusting cavity 11 and compressing the second elastic element 135. At the same time, the movement of the inclined pin 134 causes the rack 132, which is fixedly connected to the inclined pin 134, to move accordingly, thereby... The gear 131, which meshes with the rack 132, is driven to rotate. The rotation of the gear 131 drives the rotating rod 101 and the winding wheel 102 to rotate, thereby causing the winding wheel 102 to pull and wind the cable 93, which in turn drives the slider 8 to move stably, so as to separate the pin 81 on the slider 8 from the insertion hole 52, thereby realizing convenient and effective disassembly and replacement of the filter screen 51. It should be noted that other forms of rotating structures that can drive the transmission rod 101 to rotate are also applicable to the embodiments of the present invention.

[0045] The working process of the dustproof and heat dissipation device of the present invention is as follows: When it is necessary to clean the used and clogged filter screen 51, another clean filter screen 51 is required to replace it. During the replacement process, the clean filter screen 51 is inserted into the slot 6 from the same side where the inclined pin 134 is installed. When this filter screen 51 touches the inclined pin 134, it will apply a force to the pressing inclined surface at the end of the inclined pin 134, so as to push the inclined pin 134 into the interior of the adjusting cavity 11 and compress the second elastic member 135. At the same time, the movement of the inclined pin 134 will drive the rack 132 to move and drive the gear 131 to rotate. The rotation of the gear 131 will drive the... The rotating rod 100 and the winding wheel 102 rotate, causing the winding wheel 102 to pull and wind the cable 93. When the pin 81 separates from the socket 52, the clean filter screen 51 continues to move and is inserted into the slot 6. Then, the clean filter screen 51 squeezes and pushes the used and clogged filter screen 51, causing the used and clogged filter screen 51 to move out from the other end of the slot 6. When the socket 52 on the clean filter screen 51 is aligned with the pin 81, the rebound force of the first elastic member 94 causes the pin 81 to be inserted into the corresponding socket 52 on the clean filter screen 51, thereby fixing the clean filter screen 51.

[0046] like Figure 3 As shown, a power distribution cabinet 110 includes a cabinet 15 and the aforementioned dustproof and heat dissipation device 100. A protective canopy 16 is installed on the top of the cabinet 15, and two dustproof and heat dissipation devices 100 are fixedly installed on opposite sides of the cabinet 15. The two dustproof and heat dissipation devices 100 are respectively installed on the lower part of one side of the cabinet 15 and the upper part of the opposite side of the cabinet 15.

[0047] During the operation of the distribution cabinet 110, dustproof and heat dissipation devices 100 are fixedly installed on the lower part of one side of the cabinet 15 and the upper part of the opposite side of the cabinet 15, respectively. By rotating the motor on the cooling fan 21 in both directions, one cooling fan 21 becomes a supply fan and the other becomes an exhaust fan. Correspondingly, one of the ventilation channels 4 is a supply channel and the other is an exhaust channel, which enables the distribution cabinet 110 to ventilate and dissipate heat more quickly. In addition, during the replacement of old and new filters 51, the rotating part 13 in the dustproof component 1 drives the rotating rod 101 to rotate, which in turn drives the drive mechanism 9 in the mounting groove 7 to drive the pin 81 on the slider 8 to move away from or into the insertion hole 52 on the filter, thereby realizing convenient and quick disassembly and replacement of the filter 51.

[0048] like Figure 4As shown, a transformer 17 includes a distribution cabinet 110, and the transformer body 17 is installed inside a housing 15. By installing the transformer body 17 inside the housing 15 of the distribution cabinet 110, which is equipped with a dustproof and heat dissipation device 100, the heat generated by high temperatures and the transformer 17, compensation capacitors, etc. inside the housing 15 can be quickly dissipated, thereby meeting the heat dissipation and dustproof requirements of the transformer 17.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A dustproof and heat dissipation device, comprising a dustproof component (1) and a heat dissipation component (2), characterized in that, The dustproof component (1) includes a mounting block (3) disposed on the side of the housing (15). A ventilation channel (4) for heat dissipation is provided in the middle of the mounting block (3). A slot (6) for installing a filter structure (5) is provided on the side of the mounting block (3) away from the housing. The filter structure (5) includes a filter screen (51) arranged opposite to the ventilation channel (4). The filter screen (51) located on the upper and lower sides of the ventilation channel (4) is provided with insertion holes (52). A mounting groove (7) is provided on the mounting block (3) at a position opposite to each insertion hole (52). A slider (8) is slidably disposed in each mounting groove (7). A pin (81) is connected to each slider (8) to be inserted into or away from the insertion hole (52) as the slider (8) moves. The slider (8) is also connected to a drive mechanism (9) for driving the slider (8) to slide. The heat dissipation assembly (2) is disposed in a housing (15) opposite to the ventilation channel (4). The heat dissipation assembly (2) includes a cooling fan (21), the airflow direction of which is opposite to the ventilation channel (4). The drive mechanism (9) includes a rotating shaft (91) fixed in the mounting groove (7). The rotating shaft (91) is disposed at the end of the mounting groove (7) away from the slider (8). A pulley (92) is rotatably mounted on the rotating shaft (91), and a cable is wound around the pulley (92). 93), the end of the cable (93) away from the box (15) is fixedly connected to the slider (8), and the other end of the cable (93) is connected to a drive member (10). The drive member (10) is used to pull the cable (93) to drive the pulley (92) to rotate. A first elastic member (94) is also provided in the mounting groove (7). One end of the first elastic member (94) abuts against the slider (8), and the other end of the first elastic member (94) abuts against the end of the mounting groove (7) away from the slider (8). An adjustment cavity (11) is also provided in the middle of the side of the mounting block (3) near the box (15), and a through groove (12) is provided between the adjustment cavity (11) and the mounting groove (7). The driving component (10) includes a rotating rod (101) that is vertically rotatably installed in the adjusting cavity (11). The top and bottom of the rotating rod (101) are fixedly connected to a winding wheel (102). The end of the cable (93) away from the slider (8) passes through the through groove (12) and is wound around the winding wheel (102). The middle part of the rotating rod (101) is also connected to a rotating component (13) for driving the rotating rod (101) to rotate. The rotating component (13) includes a gear (131), a rack (132), a collar (133), a beveled pin (134), and a second elastic element (135). The gear (131) is fixedly installed in the middle of the rotating rod (101). A connecting hole (14) is provided between the adjusting cavity (11) and the slot (6). One end of the beveled pin (134) passes through the connecting hole (14) and extends into the interior of the slot (6). The other end of the beveled pin (134) is fixedly connected to the rack (132). The rack (132) meshes with the gear (131). A collar (133) is installed on the axial surface of one end of the inclined pin (134) near the rotating rod (101). The inclined pin (134) is movably inserted into the inside of the collar (134). A second elastic element (135) is also sleeved on the inclined pin (134). One end of the second elastic element (135) is pressed against the inner wall of the adjusting cavity (11), and the other end of the second elastic element (135) is pressed against the collar (134).

2. The dustproof and heat dissipation device according to claim 1, characterized in that, The inclined pin (134) has a pressing inclined surface at its end inside the slot (6). The filter screen (51) is inserted into the slot (6) from the same side where the inclined pin (134) is installed, and the pressing inclined surface at the end of the inclined pin (134) is pressed to push the inclined pin (134) into the adjustment cavity (11).

3. The dustproof and heat dissipation device according to claim 1, characterized in that, The mounting groove (7) near the slot (6) is also provided with a roller groove (71) extending in the same direction as the mounting groove (7), and a roller (82) adapted to the roller groove (71) is installed in the slider (8).

4. A power distribution cabinet, characterized in that, Includes a housing (15) and a dustproof and heat dissipation device (100) as described in any one of claims 1-3. A protective canopy (16) is installed on the top of the housing (15). Two dustproof and heat dissipation devices (100) are fixedly installed on opposite sides of the housing (15). The two dustproof and heat dissipation devices (100) are respectively installed on the lower part of one side of the housing (15) and the upper part of the opposite side of the housing (15).

5. A transformer, characterized in that, The transformer includes the distribution cabinet (110) as described in claim 4, and the transformer body (17) is installed inside the enclosure (15).

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