CN209748401U - be applied to driving motor's of papermaking frequency conversion cabinet - Google Patents

Abstract

The utility model relates to a be applied to the inverter cabinet of the drive motor of papermaking, relate to the technical field of electrical apparatus, including the cabinet body, rotate the cabinet door of installing on the cabinet body, install the converter in the cabinet body, all be provided with the installing frame on the cabinet body lateral wall directly over the converter and directly under, install two fixed briquetting on the installing frame, two movable briquetting that set up through adjusting device are installed to the opposite side on the installing frame, set up the first contained angle groove that link up with the relative lateral wall on the fixed briquetting, set up the second contained angle groove that link up with the relative lateral wall on the movable briquetting, be equipped with the first fan that lies in below the converter in the space that first contained angle groove and second contained angle groove formed; and a second fan is arranged on the mounting frame above the frequency converter. The utility model discloses a decide briquetting and the cooperation of dynamic pressure piece that set up on the installing frame and install and dismantle first fan and second fan, through the cooling effect of first fan and second fan increase to the converter to the life of converter has been improved.

Description

Be applied to driving motor's of papermaking frequency conversion cabinet

Technical Field

The utility model belongs to the technical field of the technique of electrical apparatus and specifically relates to a be applied to driving motor's of papermaking frequency conversion cabinet is related to.

Background

the frequency conversion cabinet is an electric control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the frequency of a working power supply of the motor.

The patent of grant bulletin number CN208862730U discloses an outdoor touch-sensitive screen formula converter cabinet, including converter cabinet main part and dodge gate, the bottom fixed mounting of converter cabinet main part has the support column, and the bottom of support column is equipped with wear-resisting bottom plate, the inside of converter cabinet main part is equipped with the converter, and the inside below position department that is located the converter of converter cabinet main part is equipped with protection switch, the preceding built-in display screen that is equipped with of converter, and the preceding below position department that is located built-in display screen of converter is equipped with the function button, the thermovent has all been seted up to the both sides of converter cabinet main part.

The technical scheme has the following defects: adopt powerful converter control in the inverter cabinet today, converter power is great, and calorific capacity can be more, though be equipped with the thermovent and dispel the heat, but near the air flow of converter is slower for the radiating rate of converter is slower, and the condition of exploding the fracture appears easily after the converter temperature is higher, influences life and safety in utilization.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be applied to driving motor's of papermaking frequency conversion cabinet, through the fixed briquetting that sets up on the installing frame and the dynamic pressure piece cooperation that slides the setting through adjusting device install first fan and second fan, then through the air convection around first fan and the second fan acceleration converter to accelerate the thermal giving off of converter, the increase is to the cooling effect of converter, with this life that has improved the converter.

the above object of the present invention is achieved by the following technical solutions:

A frequency conversion cabinet of a transmission motor applied to papermaking comprises a cabinet body, a cabinet door rotationally mounted on the cabinet body, and a frequency converter mounted in the cabinet body, the side walls of the cabinet body right above and below the frequency converter are provided with mounting frames, one side of each mounting frame far away from the cabinet door is provided with two fixed pressing blocks, the other side of the mounting frame is provided with two movable pressing blocks which are arranged in a sliding mode through an adjusting device, the surface, close to the mounting frame, of each of the two fixed pressing blocks is provided with a first wrap angle groove which is communicated with the opposite side wall and is in a right-angle shape, the surface, close to the mounting frame, of each of the two movable pressing blocks is provided with a second wrap angle groove which is communicated with the opposite side wall and is in a right-angle shape, a first fan located below the frequency converter is arranged in a clamping mode in a space formed by the two first wrap angle grooves and the two second wrap angle grooves, and an air outlet of the first fan faces one side close to the frequency converter; and a second fan is arranged on the mounting frame above the frequency converter, and an air outlet of the second fan faces to one side far away from the frequency converter.

By adopting the technical scheme, the first fan is arranged on the mounting frame below the frequency converter, the distance between the two movable pressing blocks is adjusted through the adjusting device, then one surface of the first fan, which is close to the air outlet, is placed on the upper surface of the mounting frame, then one end of the first fan is clamped into the space formed by the two first wrap angle grooves, then the distance between the two movable pressing blocks is adjusted, so that the first fan is fixed in the space formed by the first wrap angle grooves and the second wrap angle grooves, the first fan is mounted, then the second fan is mounted on the mounting frame above the frequency converter by the same method, the purposes of dismounting and mounting the fans are achieved, meanwhile, the first fan blows air to the frequency converter, the second fan sucks air to the frequency converter, so that the air convection around the frequency converter is accelerated, and the cooling effect of the frequency converter is increased, therefore, the service life of the frequency converter is prolonged.

Preferably, the mounting frame below the two movable pressing blocks is respectively and correspondingly provided with a sliding chute, the mounting frame is internally provided with a communicating groove communicated with the sliding chute, an accommodating groove communicated with the two communicating grooves is arranged in the mounting frame, a sliding hole communicated with the accommodating groove is arranged on the side wall of the mounting frame close to the cabinet door, adjusting device is including installing on moving the briquetting and the connecting block that slides in the spout, slide and keep away from the slide bar that the one end of moving the briquetting is connected and the other end is located the holding tank in the intercommunication inslot and with the connecting block, rotate and install in the holding tank and the centre of a circle gear on the central line of slide bar, set up two bull sticks on the both ends of the same diameter of gear, one end rotates the connecting rod of being connected and the other end and bull stick rotation connection with the slide bar, slide in the sliding hole and with gear engagement and one end salient in the rack outside the sliding hole, one end is connected with the rack and the first spring of holding tank inner wall connection that the other end is relative with the sliding.

Through adopting above-mentioned technical scheme, extrude the rack, the rack removes drive gear clockwise, consequently drives the connecting rod and promotes the slide bar and remove to the one side of keeping away from the gear to just can drive two dynamic pressure pieces and keep away from each other and increase the distance between the dynamic pressure piece, then loosen the rack, the gear removes to the direction that is close to the hole of sliding under the effect of spring, the rack removes drive gear anticlockwise rotation, consequently, it is close to each other and reaches the purpose that reduces the distance between the movable pressure piece to drive the briquetting.

Preferably, an air inlet hole is formed in the lower side wall, close to the frequency converter, of the cabinet body, an air outlet hole is formed in the upper side wall, close to the frequency converter, of the cabinet body, an air inlet pipe connected with the air inlet hole is arranged on the mounting frame at the lower portion of the frequency converter, and an air outlet pipe connected with the air outlet hole is arranged on the mounting frame at the upper portion of the frequency converter.

by adopting the technical scheme, the first fan blows air around the frequency converter through the air inlet and the air outside the air inlet pipe absorption cabinet body, and the second fan absorbs air around the frequency converter through the air outlet pipe and is finally discharged from the air outlet. The internal electrical apparatus unit gas of cabinet gives off the heat and leads to the internal air temperature of cabinet higher, and the lower air of temperature comes to carry out the cooling work to the converter through absorbing the cabinet outside then the discharge cabinet is external to reach the effect of increase cooling effect.

Preferably, a filter screen is arranged in the air inlet hole, and the filter screen can be detachably connected in the air inlet hole.

Through adopting above-mentioned technical scheme, filter the air that gets into first fan through the filter screen, reduce the probability that first fan is blockked up, can dismantle the connection through the filter screen simultaneously, reach and dismantle the filter screen and get off the purpose of wasing and changing.

Preferably, a plurality of placing grooves are formed in the circumferential array around the center of the air inlet on the side wall of the air inlet, positioning grooves are formed in the side wall, corresponding to the placing grooves, of the filter screen, second springs and positioning beads are arranged in the placing grooves, one ends of the second springs are connected with the bottoms of the placing grooves, the other ends of the second springs are connected with the positioning beads, and the positioning beads are in clamping fit with the positioning grooves; under the natural state, the positioning ball protrudes out of the placing groove under the action of the second spring.

Through adopting above-mentioned technical scheme, when the air intake was pegged graft to the filter screen, the location pearl was in the constant head tank of joint under the spring amount effect to the completion is to the fixed of filter screen, when dismantling the filter screen, staff pulling filter screen, location pearl break away from the constant head tank under the effect of pulling force, thereby the completion is to the dismantlement of filter screen.

preferably, one end of the filter screen, which is far away from the placing groove, is provided with a handle.

Through adopting above-mentioned technical scheme, through the setting of handle, the staff of being convenient for borrows power when pulling the filter screen.

Preferably, be provided with the cooling subassembly on the lateral wall of the cabinet body, the cooling subassembly is including setting up on the cabinet body and covering the collection cover of exhaust vent, install on the external lateral wall of exhaust vent below cabinet and be used for holding the basin of cold water, one end and collect the collection pipe that the one end that the cabinet body was kept away from to the cover is connected and the other end immerses in the cold water.

Through adopting above-mentioned technical scheme, the basin has water, and the combustion gas discharges the basin aquatic through collecting cover and collecting pipe, cools down gas through water, reduces the higher gas of exhaust temperature to the influence of environment.

Preferably, one end of the collecting pipe close to the bottom of the water tank is provided with a horizontal pipe which is in a horizontal state and one end of the horizontal pipe is connected with the collecting pipe, the other end of the horizontal pipe is sealed and arranged, and the horizontal pipe is provided with air holes in an array mode along the length direction.

Through adopting above-mentioned technical scheme, gas collecting pipe reaches the horizontal pipe, then discharges the aquatic through the bleeder vent to this can realize prolonging gaseous time of persisting in the aquatic and increase gaseous and water area of contact's effect, thereby the increase is to gaseous cooling effect.

Preferably, the caulking groove communicated with the inner side wall of the cabinet door is formed in the face, away from one side of the cabinet door in a rotating mode, of the cabinet body, the embedded block capable of being embedded into the caulking groove is arranged on the cabinet door, an iron block is arranged on one side, close to the bottom of the caulking groove, of the embedded block, and a magnet sheet is arranged at the bottom of the caulking groove.

Through adopting above-mentioned technical scheme, rotate the cabinet door and make the abaculus embedded into the caulking groove, the iron plate hugs closely on magnet under the suction effect of magnet to realized the fixed to the cabinet door. When the cabinet door is to be opened, the cabinet door is pulled, and the iron block is separated from the magnet under the action of tensile force, so that the aim of opening the cabinet door is fulfilled.

To sum up, the utility model discloses a beneficial technological effect does:

1. The first fan and the second fan are installed and disassembled through the matching of the fixed pressing block arranged on the installation frame and the dynamic pressing block arranged in a sliding mode through the adjusting device, then the frequency converter is blown by the first fan, air suction is carried out on the frequency converter by the second fan, air convection around the frequency converter is accelerated, the cooling effect on the frequency converter is increased, and therefore the service life of the frequency converter is prolonged;

2. The frequency converter is cooled by absorbing air with lower temperature outside the cabinet body and then is discharged outside the cabinet body, so that the effect of increasing the cooling effect is achieved;

3. The air entering the first fan is filtered through the filter screen, the probability of blockage of the first fan is reduced, and meanwhile, the filter screen is detachably connected, so that the purposes of removing, cleaning and replacing the filter screen are achieved;

4. Through the setting of handle, the staff of being convenient for borrow power when pulling the filter screen.

drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of section A of FIG. 1;

fig. 3 is an exploded view of the present invention;

FIG. 4 is an enlarged schematic view of section B of FIG. 3;

FIG. 5 is an enlarged schematic view of section C of FIG. 3;

Reference numerals: 10. a cabinet body; 11. a cabinet door; 12. a frequency converter; 20. installing a frame; 21. pressing blocks; 22. a movable pressing block; 23. a first wrap angle slot; 24. a second cornered groove; 25. a chute; 26. a communicating groove; 27. accommodating grooves; 28. a sliding hole; 30. an adjustment device; 31. connecting blocks; 32. a slide bar; 33. a gear; 34. a rotating rod; 35. a connecting rod; 36. a rack; 37. a first spring; 40. a first fan; 41. a second fan; 50. an air inlet hole; 51. an air outlet; 52. an air inlet pipe; 53. an air outlet pipe; 54. filtering with a screen; 55. a placement groove; 56. positioning a groove; 57. a second spring; 58. a positioning bead; 59. a handle; 60. a cooling assembly; 61. a collection hood; 62. a water tank; 63. a collection pipe; 64. a horizontal tube; 65. air holes are formed; 70. caulking grooves; 71. an insert block; 72. an iron block; 73. and a magnet piece.

Detailed Description

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

A frequency conversion cabinet applied to a transmission motor for papermaking is disclosed, referring to fig. 1, a cabinet body 10, a cabinet door 11 rotatably installed on the cabinet body 10, and a frequency converter 12 installed in the cabinet body 10, wherein installation frames 20 are fixedly installed on the side walls of the cabinet body 10 right above and below the frequency converter 12.

Referring to fig. 1 and 2, one side interval fixed mounting who keeps away from cabinet door 11 on installing frame 20 has two to decide briquetting 21, and two that slide through adjusting device 30 and set up are installed to the opposite side on the installing frame 20 and move briquetting 22, and two are decided to offer on the briquetting 21 one side that is close to installing frame 20 and link up and be the first contained angle groove 23 of right angle shape with relative lateral wall, move to offer on the briquetting 22 on two one sides that is close to installing frame 20 and link up and be the second contained angle groove 24 of right angle shape with relative lateral wall. The mounting frame 20 below the two movable pressing blocks 22 is respectively provided with a sliding groove 25 correspondingly.

referring to fig. 3 and 4, a communicating groove 26 communicating with the sliding groove 25 is formed in the mounting frame 20, an accommodating groove 27 communicating with the two communicating grooves 26 is formed in the mounting frame 20, and a sliding hole 28 communicating with the accommodating groove 27 is formed in a side wall of the mounting frame 20 close to the cabinet door 11.

The adjusting device 30 comprises a connecting block 31, a sliding rod 32, a gear 33, a rotating rod 34, a connecting rod 35, a rack 36 and a first spring 37. The connecting block 31 slides in the sliding groove 25 and is fixedly connected with the dynamic pressure block 22, one end of the sliding rod 32 slides in the communicating groove 26 and is fixedly connected with one end of the connecting block 31 far away from the dynamic pressure block 22, the other end of the sliding rod 32 is located in the accommodating groove 27, the gear 33 is rotatably installed in the accommodating groove 27, and the circle center of the gear 33 is located on the central line of the sliding rod 32. The rotating rods 34 are fixedly installed on the two ends of the gear 33 with the same diameter respectively. One end of the connecting rod 35 is rotatably connected with the gear 33 through the rotating rod 34, and the other end is rotatably connected with one end of the sliding rod 32 extending into the accommodating groove 27. The rack 36 slides in the sliding hole 28, and one end of the rack 36 protrudes out of the side wall of the mounting frame 20 communicated with the sliding hole 28, one end of the rack 36 in the accommodating groove 27 is meshed with the gear 33, and two ends of the first spring 37 are respectively fixedly connected with the rack 36 and the inner wall of the accommodating groove 27 opposite to the sliding hole 28.

A first fan 40 is arranged on the mounting frame 20 below the frequency converter 12, a second fan 41 is arranged on the mounting frame 20 above the frequency converter 12, and a space formed by the two first wrap angle grooves 23 and the two second wrap angle grooves 24 on the mounting frame 20 is used for mounting the first fan 40 and the second fan 41. Taking the installation of the first fan 40 as an example, the rack 36 is squeezed, the rack 36 moves to drive the gear 33 to rotate clockwise, so as to drive the connecting rod 35 to move and drive the pressing blocks 22 to be away from each other, so as to increase the distance between the two movable pressing blocks 22, a worker can place the surface of the first fan 40 close to the air inlet on the upper surface of the installation frame 20, then clamp one end of the first fan 40 into the first wrap angle groove 23 on the fixed pressing block 21, then loosen the rack 36, and the gear 33 moves under the action of the first spring 37 to drive the movable pressing blocks 22 to be close to each other, so as to reduce the distance between the movable pressing blocks 22, so that the first fan 40 can be clamped and installed on the installation frame 20, and meanwhile, the second fan 41 is installed by the same method.

Referring to fig. 3, an air inlet hole 50 located below the frequency converter 12 is formed in the side wall of the cabinet 10, an air outlet hole 51 located above the frequency converter 12 is formed in the side wall of the cabinet 10, an air inlet pipe 52 is fixedly mounted on the mounting frame 20 located below the frequency converter 12, and one end of the air inlet pipe 52, which is far away from the frequency converter 12, covers the air inlet hole 50; an air outlet pipe 53 is fixedly mounted on the mounting frame 20 above the frequency converter 12, and one end of the air outlet pipe 53 far away from the frequency converter 12 covers the air outlet 51.

Referring to fig. 3 and 5, a filter screen 54 is inserted into the air inlet 50, a plurality of placing grooves 55 arrayed along the central circumference of the air inlet 50 are formed in the side wall of the air inlet 50, a positioning groove 56 is formed in the side wall of the filter screen 54 corresponding to the placing groove 55, a second spring 57 and a positioning bead 58 are arranged in the placing groove 55, one end of the second spring 57 is fixedly connected with the bottom of the placing groove 55, the positioning bead 58 is fixedly connected with the other end of the second spring 57, and the positioning bead 58 is in clamping fit with the positioning groove 56; in a natural state, the positioning bead 58 protrudes out of the placement groove 55 by the second spring 57. A handle 59 is fixedly arranged at one end of the filter screen 54 far away from the placing groove 55. When the worker grasps the handle 59 to insert the filter screen 54 into the air inlet hole 50, the positioning beads 58 are clamped into the positioning grooves 56 under the action of the second springs 57, so that the purpose of fixing the filter screen 54 is achieved, when the filter screen 54 is to be detached, the worker grasps the handle 59 to pull the filter screen 54, the positioning beads 58 are separated from the positioning grooves 56 under the action of tensile force, so that the filter screen 54 is detached, and then the filter screen 54 is cleaned and replaced.

referring to fig. 3, a cooling assembly 60 is disposed on an outer side wall of the cabinet 10, and the cooling assembly 60 includes a collecting cover 61, a water tank 62, and a collecting pipe 63. The collecting cover 61 is arranged on the cabinet body 10 and covers the air outlet 51, the water tank 62 is fixedly arranged on the outer side wall of the cabinet body 10 below the air outlet 51, and cold water is contained in the water tank 62; one end of the collecting pipe 63 is fixedly connected with one side of the collecting cover 61 far away from the cabinet body 10, and the other end is positioned close to the inner bottom wall of the water tank 62 and is immersed in cold water. One end of the collecting pipe 63 far away from the collecting cover 61 is provided with a horizontal pipe 64 in a horizontal state, one end of the horizontal pipe 64 far away from the collecting pipe 63 is sealed, and air holes 65 are uniformly formed in the horizontal pipe 64 in an array mode in the length direction. The air is discharged from the air outlet 51, passes through the collecting cover 61, the collecting pipe 63 and the horizontal pipe 64, and finally is discharged into the water in the water tank 62 from the air outlet 65 on the horizontal pipe 64.

Referring to fig. 1, a caulking groove 70 is formed on a surface of the cabinet body 10 away from a side where the cabinet door 11 rotates, and the caulking groove 70 is communicated with an inner side wall close to the cabinet door 11. An insert 71 capable of being inserted into the insert groove 70 is fixedly arranged on the cabinet door 11, an iron block 72 is fixedly arranged on the insert 71, and a magnet piece 73 is fixedly arranged at the bottom of the insert groove 70. The operator pushes the cabinet door 11 to make the insert 71 inserted into the insert groove 70, and the iron block 72 is tightly attached to the magnet piece 73 under the magnetic action of the magnet piece 73, so as to fix the cabinet door 11. When the door is to be opened, the cabinet door 11 is pulled, so that the iron block 72 is separated from the magnet piece 73, and the aim of opening the cabinet door 11 is fulfilled.

The working principle of the embodiment is as follows:

The rack 36 is extruded, the rack 36 moves to increase the distance between the two movable pressing blocks 22, a worker can clamp the first fan 40 in the first wrap angle groove 23 on the fixed pressing block 21, then the rack 36 is loosened, the gear 33 enables the distance between the movable pressing blocks 22 to be reduced under the action of the first spring 37, and therefore the fan is clamped and installed on the installation frame 20, and then the second fan 41 is installed in the same method.

When the frequency converter 12 works, the first fan 40 and the second fan 41 work simultaneously to accelerate the circulation of air on the frequency converter 12 and accelerate the dissipation of heat of the frequency converter 12, so that the cooling effect on the frequency converter 12 is increased; the first fan 40 absorbs the air outside the cabinet 10 having a relatively low temperature, and then the second fan 41 discharges the air around the inverter 12 having a relatively high temperature.

The air in the cabinet 10 passes through the collecting cover 61 through the ventilating holes 50, then passes through the collecting pipe 63 and the horizontal pipe 64, and finally is discharged into the water in the water tank 62 through the ventilating holes 65 on the horizontal pipe 64. The air holes 65 on the horizontal pipe 64 can increase the contact area of the air and the water and prolong the time of the air in the water, thereby increasing the cooling effect of the water on the air.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A frequency conversion cabinet applied to a transmission motor for papermaking comprises a cabinet body (10), a cabinet door (11) rotatably mounted on the cabinet body (10) and a frequency converter (12) mounted in the cabinet body (10), and is characterized in that mounting frames (20) are arranged on the side walls of the cabinet body (10) right above and below the frequency converter (12), two fixed pressing blocks (21) are arranged on one side, far away from the cabinet door (11), of the mounting frame (20), two movable pressing blocks (22) slidably arranged through a regulating device (30) are mounted on the other side of the mounting frame (20), first wrap angle grooves (23) which are communicated with opposite side walls and are in a right-angle shape are formed in the surfaces, close to the mounting frame (20), of the two fixed pressing blocks (21), second wrap angle grooves (24) which are communicated with the opposite side walls and are in a right-angle shape are formed in the surfaces, of the two movable pressing blocks (22), close to the mounting frame (20), a first fan (40) positioned below the frequency converter (12) is clamped in a space formed by the two first wrap angle grooves (23) and the two second wrap angle grooves (24), and an air outlet of the first fan (40) faces to one side close to the frequency converter (12); and a second fan (41) is arranged on the mounting frame (20) above the frequency converter (12), and an air outlet of the second fan (41) faces to one side far away from the frequency converter (12).

2. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 1, is characterized in that: the door lock is characterized in that sliding grooves (25) are correspondingly formed in the two mounting frames (20) below the movable pressing blocks (22), communicating grooves (26) communicated with the sliding grooves (25) are formed in the mounting frames (20), accommodating grooves (27) communicated with the two communicating grooves (26) are formed in the mounting frames (20), sliding holes (28) communicated with the accommodating grooves (27) are formed in the side wall, close to the cabinet door (11), of the mounting frames (20), the adjusting device (30) comprises connecting blocks (31) which are installed on the movable pressing blocks (22) and slide in the sliding grooves (25), sliding rods (32) which slide in the communicating grooves (26) and are connected with one ends, far away from the movable pressing blocks (22), of the connecting blocks (31), of the other ends of the sliding rods (32) are located in the accommodating grooves (27), gears (33) which are installed in the accommodating grooves (27) in a rotating mode and are located on the center lines of the sliding rods (32), two rotating rods (34) arranged at two ends, A connecting rod (35) with one end rotatably connected with the sliding rod (32) and the other end rotatably connected with the rotating rod (34), a rack (36) which slides in the sliding hole (28) and is engaged with the gear (33), and one end of the rack is protruded out of the sliding hole (28), and a first spring (37) with one end connected with the rack (36) and the other end connected with the inner wall of the accommodating groove (27) opposite to the sliding hole (28).

3. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 1, is characterized in that: the utility model discloses a cabinet, including the cabinet body, the cabinet body (10) has seted up on being close to the lower lateral wall of converter (12) fresh air inlet (50), exhaust vent (51) have been seted up on the last lateral wall that the cabinet body (10) is close to converter (12), be provided with on installing frame (20) of converter (12) lower part with air inlet (50) be connected air-supply line (52), be provided with on installing frame (20) on converter (12) upper portion and go out tuber pipe (53) of being connected with exhaust vent (51).

4. the frequency conversion cabinet of the transmission motor applied to papermaking according to claim 3, is characterized in that: a filter screen (54) is arranged in the air inlet hole (50), and the filter screen (54) is detachably connected in the air inlet hole (50).

5. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 4, is characterized in that: a plurality of placing grooves (55) are formed in the side wall of the air inlet hole (50) in a circumferential array around the center of the air inlet hole (50), positioning grooves (56) are formed in the side wall, corresponding to the placing grooves (55), of the filter screen (54), second springs (57) and positioning beads (58) are arranged in the placing grooves (55), one ends of the second springs (57) are connected with the bottom of the placing grooves (55), the other ends of the second springs are connected with the positioning beads (58), and the positioning beads (58) are clamped and matched with the positioning grooves (56); in a natural state, the positioning beads (58) are protruded out of the placing groove (55) under the action of the second spring (57).

6. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 5, is characterized in that: and a handle (59) is arranged at one end of the filter screen (54) far away from the placing groove (55).

7. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 1, is characterized in that: be provided with cooling component (60) on the lateral wall of the cabinet body (10), cooling component (60) including set up on the cabinet body (10) and cover collection cover (61) of exhaust vent (51), install on exhaust vent (51) below cabinet body (10) lateral wall and be used for holding basin (62), one end and collect cover (61) and keep away from the one end of the cabinet body (10) and be connected and other end and dip collecting pipe (63) in the cold water.

8. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 7, is characterized in that: the collecting pipe (63) is provided with horizontal pipe (64) that is the horizontality and one end links to each other with collecting pipe (63) near the one end of basin (62) bottom, the other end of horizontal pipe (64) seals to set up and horizontal pipe (64) have all arrayed on length direction and have seted up bleeder vent (65).

9. The frequency conversion cabinet of the transmission motor applied to papermaking according to claim 1, is characterized in that: set up caulking groove (70) with cabinet door (11) inside wall intercommunication on keeping away from cabinet door (11) pivoted one side on the cabinet body (10), be provided with on cabinet door (11) and imbed abaculus (71) of caulking groove (70), one side that abaculus (71) are close to caulking groove (70) tank bottom is provided with iron plate (72), caulking groove (70) tank bottom is provided with magnet piece (73).