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

Convection heat dissipation type switch cabinet with dustproof function

Technical Field

The invention belongs to the technical field of switch cabinets, and particularly relates to a convection heat dissipation type switch cabinet with a dustproof function.

Background

At present, operating personnel can often use relevant cubical switchboard structure when controlling and protecting the circuit, and current cubical switchboard is at the in-process of in-service use, its self can set up corresponding heat radiation structure, thereby can discharge out the produced heat of its inside electronic equipment operation, general heat radiation structure is including the air-cooler, thermovent and dust screen, when its inside heat rose, and the operation of air-cooler will produce the cold air current, thereby form the convection current with the heat contact, so that take away the heat and discharge to the external world through thermovent and dust screen, but when the cubical switchboard is in the in-process of long-term operation use, a large amount of dusts will be adhered to the surface of its dust screen, these dusts will seriously influence the discharge efficiency of follow-up gas, and also often need operating personnel to clear up the maintenance, at this moment, make operating personnel clean operation frequency higher, operating personnel's intensity of labour has been increased.

Disclosure of Invention

The invention aims to provide a convection heat dissipation type switch cabinet with a dustproof function, so as to solve the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a convection current heat dissipation formula cubical switchboard with dustproof function, includes the quick-witted case, the positive movable mounting of machine case has the dodge gate, the equal fixed intercommunication in top of machine case both sides has the protecting crust, fixed mounting has the inner tube that is located the protecting crust inboard in the inner wall on machine case both sides top, the top fixed mounting at the machine case back has the mount, the outside right side fixed mounting of mount has driving motor, the other end fixed termination of driving motor output shaft has the pivot, the other end of pivot runs through the mount and extends to the inside of mount and fixed the cup joint initiative cylinder, the left side movable mounting of mount inner chamber has the loose axle, the external fixed surface of loose axle has cup jointed from the circular wheel, from the circular wheel through drive belt and initiative circular wheel transmission connection, the other end of pivot and loose axle runs through machine case and inner tube in proper order and extends to the inside of inner tube and fixed the cup joint of cup joint has dustproof otter board, the top fixed mounting of machine case has the top case, the top fixed mounting of machine case has the air-cooler body that the top is located the inside both sides of top case, the air-cooler body's top fixed mounting has the air-blast pipe, the bottom end that the air-blast pipe is located the air-blast pipe is fixed and is located the air-blower body, the top is located the top and is located the inner chamber of air-blast pipe.

Preferably, a protective shell is fixedly mounted on the right side of the case, a single chip microcomputer is fixedly mounted at the top of an inner cavity of the protective shell, and a controller is fixedly mounted at the bottom of the inner cavity of the protective shell.

Preferably, the equal fixed mounting in both sides at machine case inner chamber top has the smoke transducer who is located the air jet rear, the back fixed mounting of machine case has the mounting panel that is located the mount below, the inboard middle part fixed mounting of mounting panel has motor power, the fixed dwang that has cup jointed of the other end of motor power output shaft, the other end fixed mounting of dwang has the driving gear.

Preferably, the back of the case is movably sleeved with a movable cylinder located above and below two sides of the driving gear, the outer surface of the movable cylinder is fixedly sleeved with a driven gear, the outer surface of the driven gear is meshed with the outer surface of the driving gear, the other end of the movable cylinder penetrates through the case and extends into the case 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 fixed cover in surface of motor power has connect the circle case, the fixed intercommunication in the back of circle case has interior sleeve pipe, interior sheathed tube other end extend to the inside of a movable section of thick bamboo and with the inner wall swing joint of a movable section of thick bamboo, the fixed intercommunication in the positive right side of circle case has the conveyer pipe, the other end of conveyer pipe runs through the mounting panel and extends to the outside of mounting panel and fixed intercommunication has the dry powder delivery pump, the surface of dry powder delivery pump and the outside fixed connection of quick-witted case, the fixed intercommunication in top of dry powder delivery pump has the exhaust pipe.

Preferably, the inside central fixed mounting in machine case top has the pneumatic cylinder, the top of pneumatic cylinder runs through a case and extends to the top of a case and fixed cover has connect the top cover, the both sides of top cover all articulate there is the down tube, the bottom of down tube articulates there is the baffle, the bottom of baffle and the top swing joint of a case.

Preferably, the top of the top box is fixedly provided with a limiting block positioned at the front and the rear of the exhaust pipe, a movable block is movably sleeved inside the limiting block, and the outer side of the movable block is fixedly connected with the outer side of the baffle.

Preferably, the both sides of inner tube surface all seted up the opening, around the pivot central symmetry between the opening.

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

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

The invention has the following beneficial effects:

1. 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, the driving round wheel drives the driven round wheel and the movable shaft to rotate through 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, the gas circulation efficiency is effectively ensured, the cleaning and maintenance frequency of the operator is also reduced, and convenience is brought to the operation and use of the operator.

2. According to the invention, by arranging the protective shell, the single chip microcomputer, the power motor, the dry powder conveying pump and the smoke sensors, smoke detection can be carried out on the interior of the case due to the operation of the two smoke sensors, when a fire breaks out in the interior of the case, the two smoke sensors can detect and send signals to the single chip microcomputer, the single chip microcomputer can send signals to the controller, the controller can control the power motor and the dry powder conveying pump to operate, dry powder is pumped out through the pumping pipe during the operation of the dry powder conveying pump, then is guided into the interior of the round case through the conveying pipe, and then is sprayed out from the spraying head through the inner sleeve, the movable cylinder and the connecting shell in sequence, and due to the operation of the power motor, the rotating rod can drive the driving gear to rotate, the movable cylinder can be driven to rotate through the meshing between the outer surface of the driving gear and the outer surface of the driven gear, so that the rotation of the movable cylinder, the connecting shell and the spraying head can be rotated and sprayed out, and the extinguishing effect of a fire source in the interior of the case can be improved.

3. According to the air cooler, the air cylinder, the jacking sleeve, the inclined rods and the baffles are arranged, the jacking sleeve can move downwards due to the operation of the air cylinder, the two inclined rods can push the two baffles to move back to back, and finally the two baffles can play a good sealing effect on the tops of the two air exhaust pipes, so that external dust and impurities are effectively prevented from entering the two air exhaust pipes, and a good using effect of the air cooler body in a long-term operation process is guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic cross-sectional view of the side of the present invention;

FIG. 4 is a schematic view of an installation structure of the driving gear of the present invention;

FIG. 5 is a schematic cross-sectional view of the inner side of the movable cylinder according to the present invention;

FIG. 6 is a schematic cross-sectional view of the interior of the protective case of the present invention;

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

FIG. 8 is a schematic structural view of the top of the inner chamber of the housing of the present invention;

fig. 9 is a schematic view of a part a of fig. 6.

In the figure: 1. a chassis; 2. a movable door; 3. a protective shell; 4. an inner barrel; 5. a fixed mount; 6. a drive motor; 7. a rotating shaft; 8. a dustproof screen plate; 9. a driving round wheel; 10. a driven round wheel; 11. a transmission belt; 12. a top box; 13. an air cooler body; 14. an air exhaust pipe; 15. an exhaust pipe; 16. an air jet port; 17. a protective shell; 18. a single chip microcomputer; 19. a controller; 20. mounting a plate; 21. a power motor; 22. rotating the rod; 23. a driving gear; 24. a movable barrel; 25. a connecting shell; 26. a sprinkler head; 27. a round box; 28. an inner sleeve; 29. a dry powder delivery pump; 30. drawing the pipe; 31. a delivery pipe; 32. a driven gear; 33. a pneumatic cylinder; 34. jacking and sleeving; 35. a diagonal bar; 36. a baffle plate; 37. a limiting block; 38. a movable block; 39. a movable shaft; 40. a smoke sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 9, an embodiment of the present invention provides a convection heat dissipation type switch cabinet with a dustproof function, which includes a cabinet 1, a movable door 2 is movably installed on a front surface of the cabinet 1, protective shells 3 are fixedly communicated with top portions of two sides of the cabinet 1, inner cylinders 4 located inside the protective shells 3 are fixedly installed in inner walls of top ends of two sides of the cabinet 1, a fixed frame 5 is fixedly installed at a top portion of a back surface of the cabinet 1, a driving motor 6 is fixedly installed at a right side of an outer portion of the fixed frame 5, a rotating shaft 7 is fixedly sleeved on another end of an output shaft of the driving motor 6, another end of the rotating shaft 7 penetrates the fixed frame 5 and extends to an inner portion of the fixed frame 5, and is fixedly sleeved with a driving circular wheel 9, a movable shaft 39 is movably installed at a left side of an inner cavity of the fixed frame 5, a driven circular wheel 10 is fixedly sleeved on an outer surface of the movable shaft 39, the driven circular wheel 10 is in transmission connection with the driving circular wheel 9 through a transmission belt 11, the other ends of the rotating shaft 7 and the rotating shaft 39 sequentially penetrate the inner cylinders 1 and extends to an inner portion of the fixed frame 4, and is fixedly sleeved with a dustproof mesh plate 8, a top portion of the fixed frame 1, a top portion of the cabinet 1 is fixedly installed with a top box 12, a top portion of an exhaust pipe 13 located at a top portion of the exhaust pipe 13, and a top portion of the exhaust pipe 13 located at a top portion of the exhaust pipe of the cabinet 1, and is fixedly located at a bottom portion of the exhaust pipe 13 located at the exhaust pipe 13.

Wherein, when the electronic equipment of case 1 inside is in operation, will produce a large amount of heats, the heat will rise in case 1's inside this moment, and because the operation of air-cooler body 13, will extract external gas through exhaust tube 14, then convert it into cold air current and pass through blast pipe 15 from the blowout of air jet 16, thereby can play the cooling effect to case 1's inside, later gas will discharge to the external world from the below of protecting crust 3 through dustproof otter board 8, when the surface of dustproof otter board 8 adheres to the dust, operating personnel can start driving motor 6 this moment, driving motor 6's operation, will make pivot 7 drive initiative round wheel 9 take place to rotate, initiative round wheel 9 will drive driven round wheel 10 and loose axle 39 through drive belt 11 and take place the rotation simultaneously this moment, and because pivot 7 and loose axle 39's rotation, will make two dustproof otter boards 8 rotate, thereby can change two dustproof otter board 8's position, make it can be by the attached to the clean one side of dust replacement, operating personnel's change frequency, operating personnel's long-term use has been made things convenient for.

As shown in fig. 2 and 6, a protective shell 17 is fixedly mounted on the right side of the case 1, a single chip 18 is fixedly mounted on the top of an inner cavity of the protective shell 17, and a controller 19 is fixedly mounted on the bottom of the inner cavity of the protective shell 17.

Due to the design of the protective shell 17, the single chip microcomputer 18 and the controller 19 can be well protected, the single chip microcomputer 18 and the controller 19 cannot be damaged by external collision, and the service life of the single chip microcomputer 18 and the service life of the controller 19 are prolonged.

As shown in fig. 3, 4 and 8, smoke sensors 40 located behind the air outlets 16 are fixedly mounted on both sides of the top of the inner cavity of the chassis 1, a mounting plate 20 located below the fixing frame 5 is fixedly mounted on the back of the chassis 1, a power motor 21 is fixedly mounted in the middle of the inner side of the mounting plate 20, a rotating rod 22 is fixedly connected to the other end of an output shaft of the power motor 21, and a driving gear 23 is fixedly mounted on the other end of the rotating rod 22.

Wherein, because of the operation of power motor 21, will make dwang 22 drive driving gear 23 and take place rotatoryly, smoke transducer 40's output passes through wire and singlechip 18's input electric connection, singlechip 18's output passes through wire and controller 19's input electric connection, controller 19's output respectively through wire and power motor 21 and dry powder delivery pump 29's input electric connection.

As shown in fig. 2 to 5, the back of the chassis 1 is movably sleeved with a movable cylinder 24 located at the upper and lower parts of the two sides of the driving gear 23, the outer surface of the movable cylinder 24 is fixedly sleeved with a driven gear 32, the outer surface of the driven gear 32 is engaged with the outer surface of the driving gear 23, the other end of the movable cylinder 24 penetrates through the chassis 1 and extends to the inside of the chassis 1 and is fixedly communicated with a connecting shell 25, and the outer surface of the connecting shell 25 is fixedly communicated with a sprinkler 26.

Wherein, when the driving gear 23 rotates, the outer surface thereof is engaged with the outer surface of the driven gear 32, thereby rotating the four movable cylinders 24, and the four connection cases 25 and the sprinkler head 26 are also rotated.

As shown in fig. 2, 3, 4, 5 and 7, a round box 27 is fixedly sleeved on the outer surface of the power motor 21, an inner sleeve 28 is fixedly communicated with the back surface of the round box 27, the other end of the inner sleeve 28 extends into the movable cylinder 24 and is movably connected with the inner wall of the movable cylinder 24, a delivery pipe 31 is fixedly communicated with the right side of the front surface of the round box 27, the other end of the delivery pipe 31 penetrates through the mounting plate 20 and extends to the outside of the mounting plate 20 and is fixedly communicated with a dry powder delivery pump 29, the outer surface of the dry powder delivery pump 29 is fixedly connected with the outer side of the chassis 1, and a pumping pipe 30 is fixedly communicated with the top of the dry powder delivery pump 29.

Wherein, due to the operation of the dry powder delivery pump 29, the dry powder is pumped by the pumping pipe 30, then is delivered to the inside of the round box 27 by the delivery pipe 31, and then is sprayed from the spraying head 26 by the inner sleeve 28, the movable cylinder 24 and the connecting shell 25 in sequence, thereby playing a good role in extinguishing the fire source in the case 1.

As shown in fig. 1 to 7, a pneumatic cylinder 33 is fixedly mounted at the center inside the top end of the chassis 1, the top end of the pneumatic cylinder 33 penetrates through the top box 12 and extends to the upper side of the top box 12, a top sleeve 34 is fixedly sleeved on the top sleeve, two sides of the top sleeve 34 are hinged with inclined rods 35, the bottom ends of the inclined rods 35 are hinged with baffles 36, and the bottoms of the baffles 36 are movably connected with the top of the top box 12.

Wherein, when pneumatic cylinder 33 moved, will make top cover 34 downstream, two down tube 35 will promote two baffles 36 and take place the back of the body motion this moment, and two baffles 36 will play good sealed effect to the top of two exhaust tubes 14 finally, have effectually prevented that external dust and impurity from entering into the inside to exhaust tube 14.

As shown in fig. 6 and 9, the top of the top box 12 is fixedly provided with a limiting block 37 located at the front and rear of the exhaust pipe 14, a movable block 38 is movably sleeved inside the limiting block 37, and the outer side of the movable block 38 is fixedly connected with the outer side of the baffle 36.

Due to the matching between the limiting block 37 and the movable block 38, a good limiting effect is achieved on the baffle 36, and the baffle has good stability in the process of moving left and right.

As shown in fig. 2, both sides of the outer surface of the inner cylinder 4 are provided with through holes, and the through holes are centrosymmetric with respect to the rotating shaft 7.

Due to the design of the through opening, the air flow inside the case 1 can pass through the dustproof mesh plate 8 and be discharged to the outside.

As shown in fig. 1 and 6, a handle is fixedly mounted on the right side of the front surface of the movable door 2, and the outer surface of the handle is rough.

Due to the design of the handle, the operator can conveniently pull and open the movable door 2 so as to overhaul the electronic equipment in the case 1.

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

With such a design, the movable block 38 can move more smoothly inside the limiting block 37.

The working principle and the using process are as follows:

firstly, when the electronic equipment inside the case 1 operates, heat will be generated, and the heat will rise in the inside of the case 1, then due to the operation of the two air-cooler bodies 13, the external air will be extracted through the exhaust pipe 14, and then the external air is converted into cold air flow to be ejected from the air jet 16 through the exhaust pipe 15, so as to form convection with the hot air rising inside the case 1, and finally the air can be discharged to the outside from the lower part of the protective shell 3 through the dustproof mesh plate 8 and the air port.

The position of 8 surfaces of dustproof otter board is located the through-hole department on inner tube 4 surface and adheres to a large amount of dust, and when influencing the gas circulation efficiency, operating personnel can start driving motor 6 this moment, driving motor 6's operation, will make pivot 7 drive initiative circular wheel 9 take place rotatoryly, initiative circular wheel 9 will drive driven circular wheel 10 and loose axle 39 through drive belt 11 this moment and take place to rotate, and because pivot 7 and loose axle 39 rotate simultaneously, will make two dustproof otter board 8 take place rotatoryly, thereby can change the position of 8 surfaces of dustproof otter board at the through-hole department, make the position that is polluted by the dust can be replaced by clean position, not only guarantee the efficiency of gas circulation, and also reduced operating personnel to its clean frequency of maintaining.

When air-cooler body 13 is idle, operating personnel can start pneumatic cylinder 33 this moment, pneumatic cylinder 33's operation can be so that the cover 34 downstream, two down tubes 35 will promote two baffles 36 and take place the back of the body motion this moment, two baffles 36 will play good sealed effect to the top of two exhaust tubes 14 finally, the effectual outside dust or impurity of having avoided falls into the inside to two exhaust tubes 14, ensured that follow-up two air-cooler bodies 13 have good operation result of use.

When a fire breaks out in the interior of the case 1, the two smoke sensors 40 will detect the generation of smoke and will send a signal to the single chip microcomputer 18, the single chip microcomputer 18 will send a signal to the controller 19, the controller 19 will control the operation of the power motor 21 and the dry powder delivery pump 29, the operation of the dry powder delivery pump 29 will draw dry powder through the suction pipe 30 and deliver the dry powder to the interior of the round box 27 through the delivery pipe 31, and then the dry powder is sprayed out from the spraying head 26 through the inner sleeve 28, the movable cylinder 24 and the connecting shell 25 in sequence, 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 is meshed with the outer surface of the driven gear 32, so as to drive the movable cylinder 24, the connecting shell 25 and the spraying head 26 to rotate the dry powder, and at this time, the spraying head 26 can rotate the dry powder out, so as to achieve a good extinguishing effect on the fire source in the interior of the case 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a convection heat dissipation formula cubical switchboard with dustproof function, includes quick-witted case (1), its characterized in that: the front movable mounting of machine case (1) has dodge gate (2), the top of machine case (1) both sides is all fixed the intercommunication has protecting crust (3), fixed mounting has inner tube (4) that are located protecting crust (3) inboard in the inner wall on machine case (1) both sides top, the top fixed mounting at the machine case (1) back has mount (5), the outside right side fixed mounting of mount (5) has driving motor (6), the other end fixed cup joint of driving motor (6) output shaft has pivot (7), the other end of pivot (7) runs through mount (5) and extends to the inside of mount (5) and fixed cup joint initiative circular wheel (9), the left side movable mounting of mount (5) inner chamber has loose axle (39), the external surface mounting of loose axle (39) has cup jointed driven circular wheel (10), driven circular wheel (10) are connected with initiative circular wheel (9) transmission through drive belt (11), the other end of pivot (7) and loose axle (39) runs through in proper order and inner tube (4) and extends to the inside of inner tube (4) and the fixed cup joint has the cold wind wheel (9) top of machine case (12), the fixed top of the fixed box (1) top portion (12) is installed to the fixed box (13), the top fixed mounting of air-cooler body (13) has exhaust tube (14) that are located top case (12) top inside, the fixed intercommunication in bottom of air-cooler body (13) has blast pipe (15) that are located quick-witted case (1) top inside, the bottom fixed intercommunication of blast pipe (15) has air jet (16) that are located quick-witted case (1) inner chamber top.

2. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, characterized in that: the right side fixed mounting of machine case (1) has protective housing (17), the top fixed mounting of protective housing (17) inner chamber has singlechip (18), the bottom fixed mounting of protective housing (17) inner chamber has controller (19).

3. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, wherein: the equal fixed mounting in both sides at machine case (1) inner chamber top has smoke transducer (40) that are located air jet (16) rear, the back fixed mounting of machine case (1) has mounting panel (20) that are located mount (5) below, the inboard middle part fixed mounting of mounting panel (20) has motor power (21), the other end fixed cup of motor power (21) output shaft has dwang (22), the other end fixed mounting of dwang (22) has driving gear (23).

4. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, characterized in that: the back activity of quick-witted case (1) has cup jointed a movable section of thick bamboo (24) that are located driving gear (23) both sides upper and lower side, the fixed surface cover of a movable section of thick bamboo (24) has connected driven gear (32), the surface of driven gear (32) is connected with the surface engagement of driving gear (23), the other end of a movable section of thick bamboo (24) runs through quick-witted case (1) and extends to the inside and the fixed intercommunication of quick-witted case (1) has connecting shell (25), the fixed surface intercommunication of connecting shell (25) has sprinkler head (26).

5. The convection heat dissipation type switch cabinet with the dustproof function according to claim 3, wherein: the outer fixed surface of power motor (21) has cup jointed circle case (27), the fixed intercommunication in the back of circle case (27) has interior sleeve pipe (28), the other end of interior sleeve pipe (28) extend to the inside of a movable section of thick bamboo (24) and with the inner wall swing joint of a movable section of thick bamboo (24), the fixed intercommunication in the positive right side of circle case (27) has conveyer pipe (31), the other end of conveyer pipe (31) runs through mounting panel (20) and extends to the outside of mounting panel (20) and fixed intercommunication has dry powder delivery pump (29), the surface of dry powder delivery pump (29) and the outside fixed connection of quick-witted case (1), the fixed intercommunication in top of dry powder delivery pump (29) has pump tube (30).

6. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, characterized in that: the inside central fixed mounting in quick-witted case (1) top has pneumatic cylinder (33), the top of pneumatic cylinder (33) runs through top case (12) and extends to the top of top case (12) and fixed cover has connect a cover (34), the both sides of top cover (34) all articulate has down tube (35), the bottom of down tube (35) articulates there is baffle (36), the bottom of baffle (36) and the top swing joint of top case (12).

7. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, characterized in that: the top fixed mounting of top case (12) has stopper (37) that are located exhaust tube (14) front and back, the inside activity of stopper (37) has cup jointed movable block (38), the outside of movable block (38) and the outside fixed connection of baffle (36).

8. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, characterized in that: the opening has all been seted up to the both sides of inner tube (4) surface, about pivot (7) central symmetry between the opening.

9. The convection heat dissipation type switch cabinet with the dustproof function according to claim 1, wherein: the right side of the front surface of the movable door (2) is fixedly provided with a handle, and the outer surface of the handle is rough.

10. The convection heat dissipation type switch cabinet with the dustproof function according to claim 7, characterized in that: the cross-sectional area of the inner side face of the limiting block (37) is the same as that of the side face 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.

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