CN115395397A - Convection heat dissipation type switch cabinet with dustproof function - Google Patents

Abstract

The invention belongs to the technical field of switch cabinets, and discloses a convection heat dissipation type switch cabinet with a dustproof function. According to the invention, by arranging the driving motor, the rotating shaft, the dustproof screen plates and the movable shaft, when the dustproof screen plates are positioned at the through hole part designed on the outer surface of the inner cylinder and dust and impurities are attached to the through hole part, an operator can start the driving motor, the rotating shaft drives the driving round wheel to rotate by the operation of the driving motor, the driving round wheel drives the driven round wheel and the movable shaft to rotate by the driving belt, and the two dustproof screen plates rotate due to the simultaneous rotation of the rotating shaft and the movable shaft, so that the positions of the two dustproof screen plates at the through hole part on the outer surface of the inner cylinder can be changed, the polluted positions can be replaced by clean positions, and the gas circulation efficiency is effectively ensured.

Description

A convection cooling switchgear with dustproof function

technical field

The invention belongs to the technical field of switch cabinets, in particular to a convection heat dissipation switch cabinet with dustproof function.

Background technique

At present, when operators control and protect circuits, they often use related switchgear structures. However, in the actual use of existing switchgears, they will be equipped with corresponding heat dissipation structures, so as to discharge The heat generated by the operation of its internal electronic equipment, the general heat dissipation structure includes a cooling fan, cooling vents and dust-proof nets, when the internal heat rises, the operation of the cooling fan will generate cold airflow, thus contacting the heat Convection is formed in order to take away the heat and discharge it to the outside through the heat dissipation vent and the dust-proof net. However, when the switchgear is in use for a long time, a large amount of dust will adhere to the outer surface of the dust-proof net, which will seriously affect the The emission efficiency of the follow-up gas is high, and operators are often required to clean and maintain. At this time, the frequency of cleaning operations of the operators is high, and the labor intensity of the operators is increased.

Contents of the invention

The object of the present invention is to provide a convection heat dissipation switchgear with dustproof function, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a convection heat dissipation switchgear with dustproof function, including a chassis, the front of the chassis is movably equipped with movable doors, and the tops on both sides of the chassis are fixed and communicated with The protective shell, the inner wall at the top of both sides of the case is fixedly installed with an inner cylinder located inside the protective case, the top of the back of the case is fixedly mounted with a fixing frame, and the right side of the outside of the fixing frame is fixedly mounted with a drive motor. The other end of the output shaft of the driving motor is fixedly sleeved with a rotating shaft, the other end of the rotating shaft runs through the fixed frame and extends to the inside of the fixed frame and is fixedly sleeved with a driving round wheel, and the left side of the inner cavity of the fixed frame is movable. There is a movable shaft, and the outer surface of the movable shaft is fixedly sleeved with a driven round wheel, and the driven round wheel is connected to the driving round wheel through a transmission belt, and the other end of the rotating shaft and the movable shaft runs through the chassis and the inner cylinder in sequence And it extends to the inside of the inner cylinder and is fixedly sleeved with a dust-proof screen. The top of the cabinet is fixedly installed with a top box, and the top of the cabinet is fixedly installed with air cooler bodies located on both sides inside the top box. The top of the machine body is fixedly installed with an exhaust pipe located inside the top of the top box, the bottom of the air cooler body is fixedly connected with an exhaust pipe located inside the top of the chassis, and the bottom end of the exhaust pipe is fixedly connected with a Air vent at the top.

Preferably, a protective case is fixedly installed on the right side of the chassis, a single-chip microcomputer is fixedly installed on the top of the inner chamber of the protective case, and a controller is fixedly installed on the bottom of the inner cavity of the protective case.

Preferably, both sides of the top of the inner cavity of the chassis are fixedly installed with smoke sensors located behind the air outlet, the back of the chassis is fixedly installed with a mounting plate below the fixing frame, and the inner middle of the mounting plate is fixedly installed with A power motor, the other end of the output shaft of the power motor is fixedly sleeved with a rotating rod, and the other end of the rotating rod is fixedly mounted with a driving gear.

Preferably, the back side of the chassis is movably socketed with movable cylinders located above and below both sides of the driving gear, and the outer surface of the movable cylinder is fixedly sleeved with a driven gear, and the outer surface of the driven gear is connected to that of the driving gear. The outer surface is meshed and connected, the other end of the movable cylinder penetrates the cabinet and extends to the inside of the cabinet and is fixedly communicated with a connecting shell, and the outer surface of the connecting shell is fixedly communicated with a sprinkler head.

Preferably, the outer surface of the power motor is fixedly sleeved with a round box, and the back of the round box is fixedly connected with an inner sleeve, and the other end of the inner sleeve extends to the inside of the movable cylinder and is connected to the inner wall of the movable cylinder. Flexible connection, the right side of the front of the round box is fixedly connected with a delivery pipe, the other end of the delivery pipe penetrates the installation plate and extends to the outside of the installation plate and is fixedly connected with a dry powder delivery pump, the outer surface of the dry powder delivery pump It is fixedly connected with the outside of the chassis, and the top of the dry powder delivery pump is fixedly connected with a suction pipe.

Preferably, a pneumatic cylinder is fixedly installed in the center of the top of the chassis, the top of the pneumatic cylinder penetrates the top box and extends to the top of the top box and is fixedly sleeved with a top cover, and both sides of the top cover are hinged A baffle is hinged at the bottom of the slanting rod, and the bottom of the baffle is movably connected with the top of the top box.

Preferably, the top of the top box is fixedly equipped with a limit block located at the front and back of the exhaust pipe, the inside of the limit block is movably sleeved with a movable block, and the outer side of the movable block is fixedly connected with the outer side of the baffle.

Preferably, openings are opened on both sides of the outer surface of the inner cylinder, and the openings are symmetrical with respect to the center of the rotating shaft.

Preferably, a handle is fixedly installed on the right side of the front of the movable door, and the outer surface of the handle is rough.

Preferably, the cross-sectional area of the inner side of the limiting block is the same as that of the side of the movable block, and the inner surface of the limiting block and the outer surface of the movable block are both smooth.

The beneficial effects of the present invention are as follows:

1. The present invention sets the driving motor, the rotating shaft, the dust-proof screen and the movable shaft. When the dust-proof screen is located on the designed opening on the outer surface of the inner cylinder and dust and impurities are attached, the operator can start the drive motor at this time. The operation of the driving motor will cause the rotating shaft to drive the driving round wheel to rotate, and the driving round wheel will drive the driven round wheel and the active shaft to rotate through the transmission belt, and the simultaneous rotation of the rotating shaft and the active shaft will make the two anti- The dust screen rotates, which can change the position of the two dust screens at the outer surface of the inner cylinder, so that the polluted part can be replaced with a clean part, which effectively guarantees the gas circulation efficiency and reduces the It reduces the frequency of cleaning and maintenance of the operator, and brings convenience to the operation and use of the operator.

2. The present invention is provided with a protective shell, a single-chip microcomputer, a power motor, a dry powder delivery pump, and a smoke sensor. Due to the operation of the two smoke sensors, smoke detection will be performed on the inside of the chassis. If a fire occurs inside the chassis, the two A smoke sensor will detect and send a signal to the single-chip microcomputer, and since the single-chip microcomputer will send a signal to the controller, the controller will control the operation of the power motor and the dry powder delivery pump, and the operation of the dry powder delivery pump will pass through the suction pipe The dry powder is extracted, and then introduced into the inside of the round box through the delivery pipe, and then sprayed from the sprinkler head through the inner casing, movable cylinder and connecting shell in turn, and due to the operation of the power motor, the rotating rod will drive the driving gear to generate The rotation, through the meshing between the outer surface of the driving gear and the outer surface of the driven gear, can drive the movable cylinder to rotate, so as to realize the rotation of the movable cylinder, the connecting shell and the spray head, so that the dry powder can be rotated and sprayed out, and then The effect of extinguishing the fire source inside the chassis is improved.

3. The present invention arranges the pneumatic cylinder, the top sleeve, the slanting rod and the baffle. Due to the operation of the pneumatic cylinder, the top sleeve will move downward. At this time, the two slanting rods will push the two baffles to move in opposite directions. In the end, the two baffles will have a good sealing effect on the top of the two exhaust pipes, effectively preventing external dust and impurities from entering the inside of the two exhaust pipes, and ensuring the long-term operation of the air cooler body Has a good effect in use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the sectional structure schematic diagram of the present invention;

Fig. 3 is the cross-sectional structure schematic diagram of the side of the present invention;

Fig. 4 is the installation structure schematic diagram of driving gear of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of the inner side of the movable cylinder of the present invention;

Fig. 6 is a schematic cross-sectional structural diagram of the inside of the protective case of the present invention;

Fig. 7 is a schematic cross-sectional structural view of the interior of the fixing frame of the present invention;

Fig. 8 is a structural schematic diagram of the top of the inner cavity of the chassis of the present invention;

FIG. 9 is a schematic diagram of a partially enlarged structure at point A in FIG. 6 .

In the figure: 1, chassis; 2, movable door; 3, protective shell; 4, inner tube; 5, fixed frame; 6, driving motor; 7, rotating shaft; 1, driven round wheel; 11, transmission belt; 12, top box; 13, air cooler body; 14, exhaust pipe; 15, exhaust pipe; 16, air jet; 17, protective shell; 18, single-chip microcomputer; ;20, mounting plate; 21, power motor; 22, rotating rod; 23, driving gear; 24, movable cylinder; 25, connecting shell; 26, sprinkler head; 27, round box; Conveying pump; 30, pumping pipe; 31, conveying pipe; 32, driven gear; 33, pneumatic cylinder; 34, top sleeve; 35, oblique rod; 36, baffle plate; 37, limit block; 39. Active shaft; 40. Smoke sensor.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 9, the embodiment of the present invention provides a convection heat dissipation switchgear with dustproof function, including a cabinet 1, a movable door 2 is installed on the front of the cabinet 1, and the tops on both sides of the cabinet 1 are The protective shell 3 is fixedly connected, and the inner cylinder 4 located on the inner side of the protective shell 3 is fixedly installed in the inner wall of the top of both sides of the chassis 1, the top of the back of the chassis 1 is fixedly installed with a fixed frame 5, and the right side of the fixed frame 5 is fixedly installed with a The drive motor 6, the other end of the output shaft of the drive motor 6 is fixedly sleeved with a rotating shaft 7, the other end of the rotating shaft 7 runs through the fixed frame 5 and extends to the inside of the fixed frame 5 and is fixedly sleeved with a driving round wheel 9, inside the fixed frame 5 The left side of cavity is equipped with movable shaft 39, and the outer surface of movable shaft 39 is fixedly sleeved with driven round wheel 10, and driven round wheel 10 is connected with driving round wheel 9 by transmission belt 11, and the rotating shaft 7 and movable shaft 39 The other end passes through the chassis 1 and the inner cylinder 4 in turn and extends to the inside of the inner cylinder 4 and is fixedly sleeved with a dustproof screen 8. The top of the chassis 1 is fixedly installed with a top box 12, and the top of the chassis 1 is fixedly installed with a top box The air cooler body 13 on both sides inside 12, the top of the air cooler body 13 is fixedly installed with the exhaust pipe 14 inside the top of the top box 12, and the bottom of the air cooler body 13 is fixedly connected with the exhaust pipe 15 located at the top of the cabinet 1, The bottom end of the exhaust pipe 15 is fixedly communicated with an air injection port 16 located at the top of the inner cavity of the chassis 1 .

Wherein, when the electronic equipment inside the case 1 is in operation, a large amount of heat will be generated, and the heat will rise inside the case 1, and due to the operation of the air cooler body 13, it will extract the outside air through the air extraction pipe 14. The gas is converted into a cold air flow and ejected from the air outlet 16 through the exhaust pipe 15, thereby cooling the inside of the chassis 1, and then the gas will pass through the dustproof screen 8 from the bottom of the protective shell 3 When dust is attached to the outer surface of the dust-proof net plate 8, the operator can start the drive motor 6 at this time, and the operation of the drive motor 6 will cause the rotating shaft 7 to drive the driving round wheel 9 to rotate. The circular wheel 9 will drive the driven circular wheel 10 and the movable shaft 39 to rotate simultaneously through the transmission belt 11, and due to the rotation of the rotating shaft 7 and the movable shaft 39, the two dust-proof screen panels 8 will be rotated, thereby changing the The positions of the two dust-proof screens 8 allow the side covered by dust to be replaced with a clean side, which reduces the replacement frequency of the operator and facilitates the long-term use of the operator.

As shown in Fig. 2 and Fig. 6, a protective case 17 is fixedly installed on the right side of the chassis 1, a single-chip microcomputer 18 is fixedly installed on the top of the inner cavity of the protective case 17, and a controller 19 is fixedly installed on the bottom of the inner cavity of the protective case 17.

Wherein, due to the design of the protective case 17, the single-chip microcomputer 18 and the controller 19 will be well protected, so that they will not be damaged by external collisions, and the service life of the single-chip microcomputer 18 and the controller 19 will be improved.

As shown in Fig. 3, Fig. 4 and Fig. 8, both sides of the top of the inner chamber of the cabinet 1 are fixedly installed with a smoke sensor 40 positioned behind the air outlet 16, and the back of the cabinet 1 is fixedly mounted with a mounting plate 20 positioned under the fixed frame 5 , The inner middle part of mounting plate 20 is fixedly installed with power motor 21, and the other end of power motor 21 output shafts is fixedly sleeved with rotating rod 22, and the other end of rotating rod 22 is fixedly installed with driving gear 23.

Wherein, due to the operation of the power motor 21, the rotating rod 22 will drive the driving gear 23 to rotate, the output end of the smoke sensor 40 is electrically connected to the input end of the single-chip microcomputer 18 through a wire, and the output end of the single-chip microcomputer 18 is connected to the controller through a wire The input end of 19 is electrically connected, and the output end of controller 19 is electrically connected with the input end of power motor 21 and dry powder delivery pump 29 through wires respectively.

As shown in Figures 2 to 5, the back side of the cabinet 1 is movably socketed with movable cylinders 24 located at the upper and lower sides of the driving gear 23, and the outer surface of the movable cylinder 24 is fixedly socketed with a driven gear 32, and the driven gear 32 The outer surface is meshed with the outer surface of the driving gear 23, and the other end of the movable tube 24 penetrates the cabinet 1 and extends to the inside of the cabinet 1 and is fixedly connected with a connecting shell 25, and the outer surface of the connecting shell 25 is fixedly connected with a sprinkler head 26.

Wherein, when the driving gear 23 is in the process of rotation, its outer surface will mesh with the outer surface of the driven gear 32 at this time, and then can drive the four movable cylinders 24 to rotate. At this time, the four connecting shells 25 and the sprinkler heads 26 will also rotate thereupon.

As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 7, the outer surface of the power motor 21 is fixedly sleeved with a round box 27, and the back side of the round box 27 is fixedly connected with an inner casing 28, and the inner casing 28 The other end extends to the inside of the movable cylinder 24 and is movably connected with the inner wall of the movable cylinder 24. The right side of the round box 27 front is fixedly communicated with a delivery pipe 31, and the other end of the delivery pipe 31 runs through the mounting plate 20 and extends to the bottom of the mounting plate 20. A dry powder delivery pump 29 is fixedly connected to the outside. The outer surface of the dry powder delivery pump 29 is fixedly connected to the outside of the cabinet 1 . The top of the dry powder delivery pump 29 is fixedly connected to a suction pipe 30 .

Wherein, due to the operation of the dry powder delivery pump 29, the dry powder will be extracted through the suction pipe 30, and then it will be transported to the inside of the round box 27 through the delivery pipe 31, and then passed through the inner casing 28, the movable cylinder 24 and the connecting shell 25 successively. The sprinkler head 26 sprays out, and then can play a good role in extinguishing the fire source inside the cabinet 1 .

As shown in Figures 1 to 7, a pneumatic cylinder 33 is fixedly installed in the center of the top of the cabinet 1, and the top of the pneumatic cylinder 33 penetrates the top box 12 and extends to the top of the top box 12 and is fixedly sleeved with a top sleeve 34. Both sides of 34 are all hinged with inclined bar 35, and the bottom end of inclined bar 35 is hinged with baffle plate 36, and the bottom of baffle plate 36 is movably connected with the top of top case 12.

Wherein, when the pneumatic cylinder 33 is running, the top sleeve 34 will be moved downwards, and now the two oblique rods 35 will push the two baffles 36 to move oppositely, and finally the two baffles 36 will move against the two baffles. The top of each exhaust pipe 14 has a good sealing effect, effectively preventing external dust and impurities from entering into the interior of the exhaust pipe 14.

As shown in Fig. 6 and Fig. 9, the top of the top case 12 is fixedly installed with the limit block 37 that is positioned at the front and back of the exhaust pipe 14, the inside of the limit block 37 is movably sleeved with a movable block 38, and the outer side of the movable block 38 is in contact with the stopper. The outside of the plate 36 is fixedly connected.

Wherein, due to the cooperation between the limiting block 37 and the movable block 38, it will have a good limiting effect on the baffle plate 36, so that it has good stability in the process of moving left and right.

As shown in FIG. 2 , openings are opened on both sides of the outer surface of the inner cylinder 4 , and the openings are symmetrical about the center of the rotating shaft 7 .

Wherein, due to the design of the opening, the airflow inside the chassis 1 can pass through the dustproof screen 8 and be discharged to the outside.

As shown in Figure 1 and Figure 6, the right side of dodge door 2 front is fixedly equipped with handle, and the outer surface of handle is rough.

Wherein, due to the design of the handle, it will be convenient for the operator to pull and open the dodge door 2 so as to check and repair the electronic equipment inside the case 1 .

As shown in Figures 6 and 9, the cross-sectional area of the inner side of the limiting block 37 is the same as that of the side of the movable block 38, and the inner surface of the limiting block 37 and the outer surface of the movable block 38 are smooth.

Wherein, such a design will make the movable block 38 move more smoothly inside the limiting block 37 .

Working principle and usage process:

First, when the electronic equipment inside the case 1 is running, heat will be generated, and the heat will rise inside the case 1, and then due to the operation of the two air cooler bodies 13, the outside air will be extracted through the exhaust pipe 14, and then the It is transformed into a cold air flow that is ejected from the air outlet 16 through the exhaust pipe 15, and then forms a convection flow with the rising hot air inside the chassis 1, and finally the gas can be discharged from the bottom of the protective shell 3 to the outside through the dustproof mesh plate 8 and the port .

When a large amount of dust is attached to the outer surface of the dust-proof mesh plate 8 at the opening on the surface of the inner cylinder 4, which affects the gas circulation efficiency, the operator can start the drive motor 6 at this time, and the operation of the drive motor 6 will make the shaft 7 drives the driving round wheel 9 to rotate, and now the driving round wheel 9 will drive the driven round wheel 10 and the movable shaft 39 to rotate through the transmission belt 11, and due to the simultaneous rotation of the rotating shaft 7 and the movable shaft 39, the two The dust-proof screen 8 rotates, so that the position of the outer surface of the dust-proof screen 8 at the opening can be changed, so that the part polluted by dust can be replaced by a clean part, which not only ensures the efficiency of gas circulation, but also reduces the How often operators clean and maintain it.

When the air cooler body 13 is idle, the operator can start the pneumatic cylinder 33, the operation of the pneumatic cylinder 33 can make the top sleeve 34 move downward, and at this time, the two oblique rods 35 will push the two baffle plates 36 to produce Moving opposite to each other, the two baffles 36 will finally have a good sealing effect on the tops of the two exhaust pipes 14, effectively preventing external dust or impurities from falling into the inside of the two exhaust pipes 14, ensuring subsequent The two cooling air blower bodies 13 have a good working effect.

When a fire broke out in the inside of the cabinet 1, two smoke sensors 40 will detect the generation of smoke and will send a signal to the single-chip microcomputer 18, and the single-chip microcomputer 18 will send a signal to the controller 19, and the controller 19 will now It will control the operation of the power motor 21 and the dry powder delivery pump 29, and the operation of the dry powder delivery pump 29 will extract the dry powder through the suction pipe 30 and then transport it to the inside of the round box 27 through the delivery pipe 31, and then pass through the inner casing in turn. 28. The movable cylinder 24 and the connecting shell 25 are sprayed from the sprinkler head 26, and due to the operation of the power motor 21, the rotating rod 22 will drive the driving gear 23 to rotate. At this time, the outer surface of the driving gear 23 and the driven gear The outer surfaces of 32 are engaged, and then the movable cylinder 24, the connecting shell 25 and the sprinkler head 26 can be driven to rotate. At this time, the sprinkler head 26 can rotate and spray the dry powder, so that the fire source inside the cabinet 1 can be effectively extinguished. .

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A convection heat dissipation switchgear with dustproof function, comprising a cabinet (1), characterized in that: a movable door (2) is installed on the front side of the cabinet (1), and both sides of the cabinet (1) The tops of the tops are fixedly connected with protective shells (3), and the inner cylinders (4) on the inner sides of the protective shells (3) are fixedly installed in the inner wall of the top of both sides of the chassis (1), and the top of the back of the chassis (1) A fixed frame (5) is fixedly installed, and a drive motor (6) is fixedly installed on the right side of the outside of the fixed frame (5), and the other end of the output shaft of the drive motor (6) is fixedly sleeved with a rotating shaft (7), The other end of the rotating shaft (7) runs through the fixed frame (5) and extends to the inside of the fixed frame (5) and is fixedly sleeved with a driving round wheel (9). The left side of the inner cavity of the fixed frame (5) moves A movable shaft (39) is installed, and the outer surface of the movable shaft (39) is fixedly sleeved with a driven round wheel (10), and the driven round wheel (10) is connected to the driving round wheel (9) ) transmission connection, the other end of the rotating shaft (7) and the movable shaft (39) runs through the chassis (1) and the inner cylinder (4) in turn and extends to the inside of the inner cylinder (4) and is fixedly sleeved with a dust-proof screen (8), the top of the cabinet (1) is fixedly equipped with a top box (12), and the top of the cabinet (1) is fixedly installed with air cooler bodies (13) on both sides inside the top box (12), so The top of the air cooler body (13) is fixedly installed with an exhaust pipe (14) located inside the top of the top box (12), and the bottom of the air cooler body (13) is fixedly connected with an exhaust pipe located at the top of the cabinet (1). pipe (15), and the bottom end of the exhaust pipe (15) is fixedly communicated with an air injection port (16) located at the top of the inner chamber of the chassis (1). 2. A convection cooling switchgear with dustproof function according to claim 1, characterized in that: a protective case (17) is fixedly installed on the right side of the chassis (1), and the protective case (17 ) the top of the inner cavity is fixedly installed with a single-chip microcomputer (18), and the bottom of the inner cavity of the protective shell (17) is fixedly equipped with a controller (19). 3. A convection cooling switchgear with dust-proof function according to claim 1, characterized in that: both sides of the top of the inner cavity of the chassis (1) are fixedly installed with a A smoke sensor (40), the back of the chassis (1) is fixedly installed with a mounting plate (20) below the fixed frame (5), and the inner middle of the mounting plate (20) is fixedly mounted with a power motor (21), The other end of the output shaft of the power motor (21) is fixedly sleeved with a rotating rod (22), and the other end of the rotating rod (22) is fixedly mounted with a driving gear (23). 4. A convection cooling switchgear with dust-proof function according to claim 1, characterized in that: the back side of the chassis (1) is movably socketed with movable parts located on the upper and lower sides of the driving gear (23). cylinder (24), the outer surface of the movable cylinder (24) is fixedly sleeved with a driven gear (32), and the outer surface of the driven gear (32) is meshed with the outer surface of the driving gear (23). The other end of the movable cylinder (24) runs through the cabinet (1) and extends to the inside of the cabinet (1) and is fixedly communicated with a connecting shell (25), and the outer surface of the connecting shell (25) is fixedly communicated with a spray head (26 ). 5. A convection heat dissipation switchgear with dustproof function according to claim 3, characterized in that: a round box (27) is fixedly sleeved on the outer surface of the power motor (21), and the round box The back side of (27) is fixedly communicated with inner casing (28), and the other end of described inner casing (28) extends to the inside of movable cylinder (24) and is movably connected with the inwall of movable cylinder (24), and described circle The right side of the front of the box (27) is fixedly connected with a conveying pipe (31), and the other end of the conveying pipe (31) passes through the mounting plate (20) and extends to the outside of the mounting plate (20) and is fixedly connected with a dry powder conveying pump (29), the outer surface of the dry powder delivery pump (29) is fixedly connected to the outside of the cabinet (1), and the top of the dry powder delivery pump (29) is fixedly connected with a suction pipe (30). 6. A convection cooling switchgear with dustproof function according to claim 1, characterized in that: a pneumatic cylinder (33) is fixedly installed in the center of the top of the chassis (1), and the pneumatic cylinder ( The top of 33) passes through the top box (12) and extends to the top of the top box (12) and is fixedly sleeved with a top cover (34), and both sides of the top cover (34) are hinged with oblique rods (35), A baffle (36) is hinged at the bottom of the inclined rod (35), and the bottom of the baffle (36) is movably connected with the top of the top box (12). 7. A convection heat dissipation switchgear with dustproof function according to claim 1, characterized in that: the top of the top box (12) is fixedly installed with limit blocks located at the front and back of the exhaust pipe (14) (37), the inside of the limiting block (37) is movably socketed with a movable block (38), and the outer side of the movable block (38) is fixedly connected with the outer side of the baffle plate (36). 8. A convection cooling switchgear with dustproof function according to claim 1, characterized in that openings are opened on both sides of the outer surface of the inner cylinder (4), and between the openings It is symmetrical about the center of the rotating shaft (7). 9. A convection heat dissipation switchgear with dustproof function according to claim 1, characterized in that: a handle is fixedly installed on the right side of the front of the movable door (2), and the outer surface of the handle is rough. 10. A convection cooling switchgear with dustproof function according to claim 7, characterized in that: the cross-sectional area of the inner side of the limiting block (37) and the cross-sectional area of the side of the movable block (38) The areas are the same, and the inner surface of the limiting block (37) and the outer surface of the movable block (38) are smooth.

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