CN116347878A - Explosion-proof device of mining alternating current frequency converter - Google Patents
Explosion-proof device of mining alternating current frequency converter Download PDFInfo
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- CN116347878A CN116347878A CN202310621104.3A CN202310621104A CN116347878A CN 116347878 A CN116347878 A CN 116347878A CN 202310621104 A CN202310621104 A CN 202310621104A CN 116347878 A CN116347878 A CN 116347878A
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- frequency converter
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- 238000005065 mining Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 109
- 238000007664 blowing Methods 0.000 claims abstract description 33
- 238000001125 extrusion Methods 0.000 claims description 19
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims 3
- 230000003028 elevating effect Effects 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 10
- 230000005484 gravity Effects 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to an explosion-proof device of a mining alternating current frequency converter, which belongs to the technical field of mining alternating current frequency converters and aims to solve the technical problems that: the vent is offered on the converter and can be caused the entering of dust, causes the unable problem that looses of heat, and the scheme of adoption is: the explosion-proof device of the mining alternating current frequency converter comprises a frequency converter body, a through hole, a mounting plate, a fan, a sealing plate, a lifting device and a sealing mechanism, wherein the explosion-proof device of the mining alternating current frequency converter can blow a blowing frame through the fan, further the sealing of the sealing plate to the through hole is canceled, the dissipation of the temperature inside the frequency converter body is realized, meanwhile, air and dust driving the inside of the frequency converter body can be blown out of the outside of the frequency converter body from the inside of the frequency converter body, the heat and dust inside the frequency converter body are further blown out, and the problem that a large amount of dust enters and is inconvenient to be discharged due to the fact that the existing frequency converter is provided with a vent is solved.
Description
Technical Field
The invention relates to the technical field of mining alternating current frequency converters, in particular to an explosion-proof device of a mining alternating current frequency converter.
Background
The mining AC frequency converter is an electric control device for controlling an AC motor by changing the working power supply frequency of a motor in a mine, but when the mining AC frequency converter is used in the mine, the probability of explosion of the frequency converter is improved, because in the mine, a large amount of dust and foreign matters in the assembly are remained in the frequency converter due to the fact that the mine environment is too bad, and then a large amount of heat generated by an electric device in the frequency converter in the use process is caused, the heat is conducted away by adopting a heat dissipation device, but a vent for heat dissipation is required to be formed in the frequency converter, but the dust is led away, so that the problem of dust is caused, the problem of heat dissipation cannot be caused repeatedly occurs, and when the frequency converter is used, the internal capacitor temperature is too high, and the heat is conducted away by adopting the heat dissipation device, so that a closed loop of the problem occurs.
Therefore, it is necessary to provide an explosion-proof device for a mining ac frequency converter to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides an explosion-proof device of a mining alternating current frequency converter.
The invention provides an explosion-proof device of a mining alternating current frequency converter, which comprises a frequency converter body, a through hole, a mounting plate, a fan, a sealing plate, a lifting device and a sealing mechanism, wherein the through hole for ventilation is formed in one side of the frequency converter body, the mounting plate is fixedly arranged on the outer wall of one side of the frequency converter body at a position corresponding to the bottom end of the through hole, the fan for providing power and wind power is symmetrically and fixedly arranged on the top of the mounting plate, the sealing plate is arranged on the inner wall of the frequency converter body at a position close to the through hole, the sealing plate is used for sealing the through hole, the lifting device for moving the sealing plate is fixedly arranged in the frequency converter body, and the sealing mechanism for sealing the through hole by the sealing plate is arranged on the inner wall of the frequency converter body. When the device is used, the power supply to the fan is controlled through the controller on the frequency converter body, the fan blows the lifting device, the lifting of the sealing plate is driven, the sealing plate is cancelled to seal the through hole, the dissipation of the temperature inside the frequency converter body is realized, meanwhile, the fan blows the air at the through hole through the operation of the fan, the air flow rate at the through hole is large, the pressure intensity is small, the air flow rate inside the frequency converter body is small, the pressure intensity is large, therefore, the air and dust inside the frequency converter body are driven to blow out of the frequency converter body from the inside of the frequency converter body, the heat and dust inside the frequency converter body are further blown out, the fan is cancelled to blow the lifting device after that, the sealing plate is lowered through the action of gravity, and the sealing between the sealing plate and the through hole is realized through the operation of the sealing mechanism.
Preferably, the lifting device comprises a fixed block, a first positioning rod, a lifting frame, a first positioning hole, a connecting plate and a blowing frame, wherein the fixed block is symmetrically and fixedly arranged on the inner wall of the frequency converter body, the first positioning rod is fixedly arranged between the two fixed blocks, the lifting frame is slidably arranged between the two first positioning rods, the lifting frame is provided with the first positioning hole corresponding to the position of the first positioning rod, the first positioning hole is slidably connected with the first positioning rod, one side of the lifting frame is slidably arranged with the sealing plate, the connecting plate is fixedly arranged on one side of the lifting frame, the blowing frame is integrally and fixedly arranged at the bottom of the connecting plate, and the blowing frame corresponds to the fan. When the fan operates, the fan blows the blowing frame, and then the lifting frame is driven to ascend along the outer side of the first positioning rod, so that the sealing plate is driven to ascend, the sealing plate is canceled from sealing the through hole, and the temperature inside the frequency converter body is dispersed.
Preferably, a chamfer is arranged between the blowing frame and the connecting plate. The wind force is concentrated to blow at the top of the blowing frame by the fan.
Preferably, a restoring spring is sleeved outside the bottom of the first positioning rod, one end of the restoring spring is fixedly connected with the bottom of the lifting frame, and the other end of the restoring spring is fixedly connected with the upper surface of the fixed block at the bottom. The blowing of the fan to the blowing frame is canceled, and the sealing plate is pulled to descend in an auxiliary mode through the pulling force of the restoring spring in the descending process of the sealing plate under the action of gravity, so that the sealing plate and the through holes are sealed.
Preferably, the first positioning hole is tightly attached to and slides with the first positioning rod. In the lifting process of the lifting frame, the lifting stability of the lifting frame is realized.
Preferably, sealing mechanism includes second locating hole, second locating lever, extrusion spring, guide block and guide way, the second locating hole has been seted up to the both ends symmetry of crane, the middle part slidable mounting in second locating hole has the second locating lever, one side and the shrouding fixed connection of two second locating levers, the one end cover that the shrouding was kept away from to the second locating lever is equipped with extrusion spring, extrusion spring's one end and crane fixed connection, extrusion spring's the other end and the one end fixed connection that the shrouding was kept away from to the second locating lever, one side symmetry fixed mounting that the shrouding kept away from the second locating lever has the guide block, the inner wall of shrouding corresponds the position pair symmetry fixed mounting of guide block and is used for carrying out extruded guide way to the guide block on the shrouding. After canceling the fan to blow the frame of blowing, the shrouding will descend through the effect of gravity, and when the shrouding descends to the minimum, the minimum of guide block will cancel the extrusion to the guide way minimum, drives the shrouding along the orbit of second locating hole through extrusion spring's thrust and removes, realizes the contact of one side and the converter body inner wall of shrouding, realizes the closure to the through-hole.
Preferably, the second positioning hole is closely attached to the second positioning rod for sliding. In the lifting process of the sealing plate, the sealing plate moves along the track of the second positioning hole, so that the moving stability of the sealing plate is realized.
Preferably, a mounting groove is formed in one side of the sealing plate, and a sealing gasket is mounted in the mounting groove. When one side of the sealing plate contacts with the inner wall of the frequency converter body, the sealing effect of the sealing plate on the through hole is further achieved through the arrangement of the sealing gasket.
Compared with the related art, the explosion-proof device of the mining alternating current frequency converter has the following beneficial effects:
when the air conditioner is used, compared with the prior art, the air conditioner is controlled by the controller on the frequency converter body to supply power to the fan, the fan blows the blowing frame, and then the lifting frame is driven to ascend along the outer side of the first positioning rod, the sealing plate is driven to ascend, the sealing plate is canceled from sealing the through hole, the internal temperature of the frequency converter body is dispersed, meanwhile, the fan blows air at the through hole, the air flow rate at the through hole is high, the pressure intensity is small, the air flow rate at the frequency converter body is low, and the pressure intensity is large, so that the air and dust in the frequency converter body are driven to blow out of the frequency converter body from the frequency converter body, and the heat and dust in the frequency converter body are further blown out;
when the blower is canceled from blowing the blowing frame, the sealing plate is lowered under the action of gravity, and one side of the sealing plate is contacted with the inner wall of the frequency converter body through the operation of the sealing mechanism, so that the through hole is sealed;
the through hole for radiating is reserved in the operation process of the frequency converter body, so that the heat radiation inside the frequency converter body is guaranteed, the operation of the fan and the lifting device is also realized, the blowing-out of heat and dust inside the frequency converter body is guaranteed, and the problem that a large amount of dust enters and is inconvenient to discharge due to the fact that the ventilation opening is formed in the existing frequency converter is solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a part of the structure of the present invention;
FIG. 3 is a schematic view of a partial explosion structure according to the present invention;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is a second schematic view of a partial explosion structure according to the present invention;
FIG. 6 is a second partial schematic view of the present invention.
Reference numerals in the drawings: 1. a transducer body; 2. a through hole; 3. a mounting plate; 4. a blower; 5. a sealing plate; 6. a lifting device; 7. a sealing mechanism; 8. a restoring spring; 9. a mounting groove; 10. a sealing gasket; 61. a fixed block; 62. a first positioning rod; 63. a lifting frame; 64. a first positioning hole; 65. a connecting plate; 66. a blowing frame; 71. a second positioning hole; 72. a second positioning rod; 73. extruding a spring; 74. a guide block; 75. a guide groove.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1 to 6, an explosion-proof device of a mining ac frequency converter includes a frequency converter body 1, a through hole 2, a mounting plate 3, a fan 4, a sealing plate 5, a lifting device 6 and a sealing mechanism 7, wherein the through hole 2 for ventilation is formed in one side of the frequency converter body 1, the mounting plate 3 is fixedly mounted on the outer wall of one side of the frequency converter body 1 corresponding to the bottom end of the through hole 2, the fan 4 for providing power and wind power is symmetrically and fixedly mounted on the top of the mounting plate 3, the sealing plate 5 is mounted on the inner wall of the frequency converter body 1 close to the position of the through hole 2, the sealing plate 5 is used for sealing the through hole 2, the lifting device 6 for moving the sealing plate 5 is fixedly mounted in the inner wall of the frequency converter body 1, and the sealing mechanism 7 for sealing the through hole 2 is mounted on the inner wall of the frequency converter body 1. When the device is used, the power supply to the fan 4 is controlled through the controller on the frequency converter body 1, the fan 4 blows the lifting device 6, the sealing plate 5 is driven to rise, the sealing plate 5 is cancelled to close the through hole 2, the internal temperature of the frequency converter body 1 is dispersed, meanwhile, through the operation of the fan 4, the fan 4 blows the air at the through hole 2, the air flow rate at the through hole 2 is large, the pressure intensity is small, the air flow rate at the inside of the frequency converter body 1 is small, the pressure intensity is large, therefore, the air and dust inside the frequency converter body 1 are driven to blow out of the frequency converter body 1 from the inside of the frequency converter body 1, the heat and dust inside the frequency converter body 1 are further blown out, the fan 4 is cancelled to blow the lifting device 6 afterwards, the sealing plate 5 is lowered through the action of gravity, and the sealing between the sealing plate 5 and the through hole 2 is realized through the operation of the sealing mechanism 7.
Referring to fig. 1 to 6, the lifting device 6 includes a fixing block 61, a first positioning rod 62, a lifting frame 63, a first positioning hole 64, a connecting plate 65 and a blowing frame 66, the fixing block 61 is symmetrically and fixedly installed on the inner wall of the frequency converter body 1, the first positioning rod 62 is fixedly installed between the two fixing blocks 61, the lifting frame 63 is slidably installed between the two first positioning rods 62, the first positioning hole 64 is formed in the position of the lifting frame 63 corresponding to the first positioning rod 62, the first positioning hole 64 is slidably connected with the first positioning rod 62, one side of the lifting frame 63 is slidably installed with the sealing plate 5, the connecting plate 65 is fixedly installed on one side of the lifting frame 63, the blowing frame 66 is fixedly installed on the bottom of the connecting plate 65, and the blowing frame 66 is arranged corresponding to the fan 4. When the fan 4 operates, the fan 4 blows the blowing frame 66, and then drives the lifting frame 63 to ascend along the outer side of the first positioning rod 62, and then drives the sealing plate 5 to ascend, so that the sealing plate 5 is canceled from sealing the through hole 2, and the temperature inside the frequency converter body 1 is dispersed.
Referring to fig. 1 to 6, a chamfer is provided between the blowing frame 66 and the connecting plate 65. The fan 4 is realized to concentrate the wind power on the top of the blowing frame 66.
Referring to fig. 1 to 6, a restoring spring 8 is sleeved on the outer side of the bottom of the first positioning rod 62, one end of the restoring spring 8 is fixedly connected with the bottom of the lifting frame 63, and the other end of the restoring spring 8 is fixedly connected with the upper surface of the bottom fixing block 61. In the process of canceling the blowing of the blower 4 to the blowing frame 66 and descending the sealing plate 5 under the action of gravity, the sealing plate 5 is pulled to descend under the assistance of the pulling force of the restoring spring 8, so that the sealing plate 5 and the through hole 2 are sealed.
Referring to fig. 1 to 6, the first positioning hole 64 is closely attached to the first positioning rod 62. In the lifting process of the lifting frame 63, the lifting stability of the lifting frame 63 is realized.
Referring to fig. 1 to 6, the sealing mechanism 7 includes a second positioning hole 71, a second positioning rod 72, an extrusion spring 73, a guide block 74 and a guide groove 75, the second positioning hole 71 is symmetrically provided at two ends of the lifting frame 63, the second positioning rod 72 is slidably mounted in the middle of the second positioning hole 71, one sides of the two second positioning rods 72 are fixedly connected with the sealing plate 5, the extrusion spring 73 is sleeved at one end of the second positioning rod 72 away from the sealing plate 5, one end of the extrusion spring 73 is fixedly connected with the lifting frame 63, the other end of the extrusion spring 73 is fixedly connected with one end of the second positioning rod 72 away from the sealing plate 5, the guide block 74 is symmetrically and fixedly mounted at one side of the sealing plate 5 away from the second positioning rod 72, and the guide groove 75 for extruding the guide block 74 on the sealing plate 5 is symmetrically and fixedly mounted at the inner wall of the sealing plate 5 corresponding to the position of the guide block 74. After the blower 4 is canceled from blowing the blowing frame 66, the sealing plate 5 will descend under the action of gravity, and when the sealing plate 5 descends to the lowest end, the lowest end of the guide block 74 will cancel the extrusion of the lowest end of the guide groove 75, and the sealing plate 5 is driven to move along the track of the second positioning hole 71 by the thrust of the extrusion spring 73, so that one side of the sealing plate 5 contacts with the inner wall of the frequency converter body 1, and the through hole 2 is sealed.
Referring to fig. 1 to 6, the second positioning hole 71 and the second positioning rod 72 slide closely. In the lifting process of the sealing plate 5, the sealing plate 5 moves along the track of the second positioning hole 71, so that the moving stability of the sealing plate 5 is realized.
Referring to fig. 1 to 6, a mounting groove 9 is formed in one side of the sealing plate 5, and a gasket 10 is mounted in the mounting groove 9. When one side of the sealing plate 5 contacts with the inner wall of the frequency converter body 1, the sealing effect of the sealing plate 5 on the through hole 2 is further achieved through the arrangement of the sealing gasket 10.
When the device is used, the controller on the frequency converter body 1 is used for controlling the power supply to the fan 4, the fan 4 is used for blowing the blowing frame 66, then the lifting frame 63 is driven to be driven to ascend along the outer side of the first positioning rod 62, the sealing plate 5 is driven to ascend, the sealing plate 5 is canceled to seal the through hole 2, the internal temperature of the frequency converter body 1 is dispersed, meanwhile, the restoring spring 8 is in an elongated state, the fan 4 is used for blowing the air at the position of the through hole 2, the air flow rate at the position of the through hole 2 is high, the pressure intensity is small, the air flow rate inside the frequency converter body 1 is small, the pressure intensity is large, therefore, the air and dust inside the frequency converter body 1 are driven to be blown out of the frequency converter body 1 from the inside of the frequency converter body 1, further blow out heat and dust inside the converter body 1, in the rising process of the sealing plate 5, the lowest end of the guide block 74 will cancel the extrusion of the lowest end of the guide groove 75, the sealing plate 5 will be driven to move along the track of the second positioning hole 71, the contact between the sealing plate 5 and the inner wall of the converter body 1 is canceled, then the blowing of the blower 4 to the blowing frame 66 is canceled, the sealing plate 5 will descend under the action of gravity, when the sealing plate 5 descends to the lowest end, the lowest end of the guide block 74 will cancel the extrusion of the lowest end of the guide groove 75, the sealing plate 5 is driven to move along the track of the second positioning hole 71 through the thrust of the extrusion spring 73, the contact between one side of the sealing plate 5 and the inner wall of the converter body 1 is realized, and the sealing of the through hole 2 is realized.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. The utility model provides an explosion-proof equipment of mining AC frequency converter, its characterized in that includes converter body (1), through-hole (2), mounting panel (3), fan (4), shrouding (5), elevating gear (6) and sealing mechanism (7), through-hole (2) that are used for ventilation are seted up to one side of converter body (1), the position fixed mounting that one side outer wall of converter body (1) corresponds through-hole (2) bottom has mounting panel (3), the top symmetry fixed mounting of mounting panel (3) has fan (4) that are used for providing power and wind-force, shrouding (5) are installed to the position that through-hole (2) are pressed close to the inner wall of converter body (1), shrouding (5) are used for sealing through-hole (2), the inside fixed mounting of converter body (1) has elevating gear (6) that are used for shrouding (5) to remove, sealing mechanism (7) are carried out sealing to through-hole (2) to the inner wall of converter body (1).
2. The explosion-proof device of a mining alternating current frequency converter according to claim 1, wherein the lifting device (6) comprises a fixed block (61), a first positioning rod (62), a lifting frame (63), a first positioning hole (64), a connecting plate (65) and a blowing frame (66), the fixed block (61) is symmetrically and fixedly arranged on the inner wall of the frequency converter body (1), the first positioning rod (62) is fixedly arranged between the two fixed blocks (61), the lifting frame (63) is slidingly arranged between the two first positioning rods (62), the lifting frame (63) is provided with the first positioning hole (64) corresponding to the position of the first positioning rod (62), the first positioning hole (64) is slidingly connected with the first positioning rod (62), one side of the lifting frame (63) is slidingly arranged with the sealing plate (5), one side of the lifting frame (63) is fixedly arranged with the connecting plate (65), the blowing frame (66) is integrally and fixedly arranged on the bottom of the connecting plate (65), and the blowing frame (66) is correspondingly arranged with the fan (4).
3. An explosion-proof device for a mining ac frequency converter according to claim 2, characterized in that a chamfer is provided between the blowing frame (66) and the connecting plate (65).
4. The explosion-proof device of the mining alternating current frequency converter according to claim 2, wherein a recovery spring (8) is sleeved outside the bottom of the first positioning rod (62), one end of the recovery spring (8) is fixedly connected with the bottom of the lifting frame (63), and the other end of the recovery spring (8) is fixedly connected with the upper surface of a fixed block (61) at the bottom.
5. An explosion-proof device for a mining ac frequency converter according to claim 2, wherein the first positioning hole (64) is closely attached to and slides with the first positioning rod (62).
6. The explosion-proof device of a mining alternating current frequency converter according to claim 4, wherein the sealing mechanism (7) comprises a second positioning hole (71), a second positioning rod (72), an extrusion spring (73), guide blocks (74) and guide grooves (75), the second positioning holes (71) are symmetrically formed in two ends of the lifting frame (63), the second positioning rod (72) is slidably mounted in the middle of the second positioning hole (71), one side of the two second positioning rods (72) is fixedly connected with the sealing plate (5), one end of the second positioning rod (72) far away from the sealing plate (5) is sleeved with the extrusion spring (73), one end of the extrusion spring (73) is fixedly connected with the lifting frame (63), the other end of the extrusion spring (73) is fixedly connected with one end of the second positioning rod (72) far away from the sealing plate (5), the guide blocks (74) are symmetrically and fixedly mounted on one side of the sealing plate (5) far away from the second positioning rod (72), and the inner wall of the sealing plate (5) corresponds to the position of the guide blocks (74) to the guide grooves (75) for extruding the sealing plate (5).
7. An explosion-proof device for a mining ac frequency converter according to claim 6, wherein the second positioning hole (71) is closely attached to and slides with the second positioning rod (72).
8. The explosion-proof device of the mining alternating current frequency converter according to claim 7, wherein a mounting groove (9) is formed in one side of the sealing plate (5), and a sealing gasket (10) is mounted in the mounting groove (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310621104.3A CN116347878B (en) | 2023-05-30 | 2023-05-30 | Heat abstractor of mining alternating current frequency converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310621104.3A CN116347878B (en) | 2023-05-30 | 2023-05-30 | Heat abstractor of mining alternating current frequency converter |
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| CN116347878A true CN116347878A (en) | 2023-06-27 |
| CN116347878B CN116347878B (en) | 2023-08-08 |
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