CN116067513A

CN116067513A - Online temperature measuring device for VD-VOD vacuum furnace

Info

Publication number: CN116067513A
Application number: CN202211741109.1A
Authority: CN
Inventors: 吕建华; 朱兴发; 胡江; 严云峰; 濮伟国
Original assignee: SUZHOU ZHENHU ELECTRIC FURNACE CO Ltd
Current assignee: SUZHOU ZHENHU ELECTRIC FURNACE CO Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-05

Abstract

The application relates to an online temperature measuring device for a VD-VOD vacuum furnace, which relates to the technical field of vacuum furnace temperature measurement; the device comprises a vacuum tank, wherein a steel ladle is arranged in the vacuum tank, a tank cover is arranged on the upper surface of the vacuum tank, a guide upright post is arranged on the upper surface of the tank cover, a lifting plate is connected to the side wall of the guide upright post in a sliding manner, a lifting rod is arranged on one side, close to the tank cover, of the lifting plate, a temperature measuring piece is arranged at one end, far away from the lifting plate, of the lifting rod, an installation pipe communicated with the interior of the tank cover is arranged on the upper surface of the tank cover, the lifting rod and the temperature measuring piece are both in sliding connection with the interior of the installation pipe, a sealing device is arranged at one end, far away from the tank cover, of the installation pipe, so that the tightness of the lifting rod in sliding of the interior of the installation pipe is improved through the sealing device, and a lifting transmission mechanism is arranged on the guide upright post so as to drive the lifting plate to move along the vertical direction of the guide upright post; the method has the effect of reducing the possibility that the molten steel in the vacuum furnace is subjected to vacuum breaking and then is separated from the expected temperature.

Description

Online temperature measuring device for VD-VOD vacuum furnace

Technical Field

The application relates to the technical field of vacuum furnace temperature measurement, in particular to an online temperature measuring device for a VD-VOD vacuum furnace.

Background

In the metallurgical industry production, in order to improve the quality of molten steel for some high-quality steel grades, vacuum degassing treatment is needed for the molten steel, and the most common and most wide method in the world at present adopts a VD/VOD external vacuum refining degassing technology, so that the method has the advantages of simple equipment, less investment, low cost, more refined varieties, high quality, simplicity in operation and the like.

In the current production process of a VD/VOD vacuum refining furnace, the temperature of molten steel is measured once after a ladle carrying molten steel is hung into a vacuum tank; then the vacuum tank cover is turned on to a vacuum tank station, and the vacuum tank cover is covered to start vacuumizing; and finally, breaking vacuum after the set time is reached, opening and removing the vacuum tank cover, and performing temperature measurement and sampling to determine whether the molten steel is qualified.

In view of the above related art, the inventors consider that the temperature of molten steel cannot be measured by a smelter in the whole smelting process due to lack of corresponding on-line temperature measuring equipment in the vacuumizing process, and meanwhile, the temperature of molten steel is easy to be continuously reduced due to the fact that no heat source is basically provided in the VD/VOD smelting process, so that the temperature of molten steel is required to be determined by the stokehole smelting worker according to previous experience in the whole smelting process. When the vacuum pumping treatment time is too long, the molten steel is easy to cause lower than the expected temperature after breaking vacuum, so that the molten steel is required to be returned to the previous working procedure for heat compensation, and the VD-VOD vacuum degassing treatment is carried out again, and even the molten steel is scrapped under serious conditions; when the vacuum pumping treatment time is too short, the molten steel is easy to break vacuum and then is higher than the expected temperature, so that the molten steel is required to be exposed to the atmosphere for waiting for cooling; under severe conditions, the situation that molten steel is degassed and not bottomed easily occurs, and the final casting is scrapped.

Disclosure of Invention

In order to reduce the possibility of a gap between the broken vacuum of molten steel in the vacuum furnace and the expected temperature, the application provides an online temperature measuring device for a VD-VOD vacuum furnace.

The application provides an online temperature measuring device for VD-VOD vacuum furnace adopts following technical scheme:

the utility model provides an online temperature measuring device for VD-VOD vacuum furnace, includes the vacuum tank, the inside of vacuum tank is provided with the ladle, the upper surface of vacuum tank is provided with the cover, the last surface mounting of cover has the direction stand, the lateral wall sliding connection of direction stand has the lifter plate, one side that the lifter plate is close to the cover is provided with the lifter, the one end that the lifter plate was kept away from to the lifter is provided with the temperature measurement spare, the upper surface of cover is provided with the communicating mounting tube in cover inside, equal sliding connection of lifter and temperature measurement spare is in the inside of mounting tube, the one end that the cover was kept away from to the mounting tube is provided with sealing device to improve the leakproofness of lifter when the inside slides of mounting tube through sealing device, be provided with lift drive mechanism on the direction stand for driving the lifter plate and take place to remove along the vertical direction of direction stand.

Through adopting above-mentioned technical scheme, lifting drive mechanism drive lifter plate moves along the vertical direction of direction stand, and the lifter plate drives the lifter and moves along vertical direction in step, and the lifter drives the temperature measurement piece and moves along vertical direction in step, easily makes the smelter survey the temperature of molten steel in the ladle under the vacuum environment, has effectively reduced the possibility that there is the gap with the anticipated temperature after the molten steel breaks vacuum in the vacuum furnace to reduce the smelter need with the molten steel in the ladle return to the last process carry out the concurrent heating or wait for the possibility of cooling down in the atmosphere, and then improved the quality of molten steel, effectively improved the quality of foundry goods finished product.

Preferably, the lifting transmission mechanism comprises a supporting block, a rope winding rod, a lifting rope and a transmission piece, wherein the supporting block is arranged on the side wall of the guide upright post, the rope winding rod is rotationally connected to the side wall of the supporting block, one end of the lifting rope is arranged on the side wall of the rope winding rod, a communication hole is formed in the guide upright post, an access hole and an access hole are formed in the side wall of the guide upright post, the access hole is positioned below the access hole, and one end of the lifting rope, far away from the rope winding rod, sequentially penetrates through the access hole, the communication hole and the interior of the access hole and is connected to the upper surface of the lifting plate; the driving medium includes driving motor, two sprockets, chain, driving motor sets up in the lateral wall of direction stand, one of them the sprocket sets up in driving motor's output, another the sprocket sets up in the lateral wall of rope winding pole, the lateral wall of two sprockets is located to the chain cover.

Through adopting above-mentioned technical scheme, drive motor drives the sprocket that links to each other with it and takes place to rotate, and another sprocket takes place to rotate through the chain drive to make the rope winding pole take place to rotate, thereby realize the rope winding pole to the tightening up and release of lifting rope, thereby control lifter plate is located the position on the guide post.

Preferably, the temperature measuring piece is electrically connected to a controller, and the controller is electrically connected to a temperature display screen.

By adopting the technical scheme, the display screen is arranged, so that a smelting worker can determine the indication of the temperature measuring piece through the reading on the display screen, and the smelting worker can quickly read the indication of the temperature measuring piece.

Preferably, the side wall of lifter is provided with the stopper, the upper surface of cover is provided with the auxiliary frame, be provided with the detector on the auxiliary frame, the detector is used for detecting whether the temperature measurement spare is located inside the installation pipe, the detector electricity is connected in the controller, the controller electricity is connected in driving motor, driving motor is used for receiving the detection information of detector to after the temperature measurement spare is located inside the installation pipe, stop starting driving motor.

Through adopting above-mentioned technical scheme, detect when the detector that the temperature measurement spare is located inside the installation pipe, the controller control driving motor stops rotating to after the temperature measurement spare breaks away from the inside of ladle, need not to smelt the man-hour and pay attention to the lifter plate on the guide post slide height, realize intelligent operation, effectively improved the work efficiency of smelting worker.

Preferably, a connecting frame is arranged in the tank cover, a cleaning pipe is arranged at one end, far away from the tank cover, of the connecting frame, and a cleaning brush is arranged in the cleaning pipe.

Through adopting above-mentioned technical scheme, the setting of cleaning brush to when the temperature measurement spare is measured and is ended to one side that keeps away from the vacuum tank and remove, and when the temperature measurement spare passed through the inside of cleaning tube, cleaning brush cleared up the surface of temperature measurement spare, thereby reduced the temperature measurement spare surface and be infected with the possibility that has molten steel, and then reduced the molten steel solidification and caused the possibility that influences to the temperature measurement accuracy when the temperature measurement spare is used once more on the temperature measurement spare surface.

Preferably, the inner wall of the tank cover is provided with a driving motor, the output end of the driving motor is connected with a driving worm, one end of the driving worm, which is far away from the driving motor, is rotationally connected to the inner wall of the tank cover, the side wall of the cleaning pipe is provided with a driving worm wheel, and the driving worm wheel are meshed with each other.

Through adopting above-mentioned technical scheme, start driving motor, driving motor drives the drive worm and takes place to rotate, and the drive worm drives the drive worm wheel and takes place to rotate to make clean pipe take place to rotate, thereby strengthened the clean brush and to the clean degree of clean pipe perisporium, and then reduced the possibility that the temperature measurement spare surface remains has molten steel.

Preferably, the inner wall of the tank cover is provided with a supporting rod, one side, far away from the vacuum tank, of the supporting rod is provided with a sliding groove along the horizontal direction, the inner wall of the sliding groove is provided with a sliding rod, the side wall of the sliding rod is slidably connected with a sliding block, the upper surface of the sliding block is provided with a collecting box for collecting molten steel stained on the cleaning brush, and the collecting box is provided with a moving part for driving the sliding block to move along the horizontal direction.

Through adopting above-mentioned technical scheme, when cleaning brush clear up temperature measurement spare surface, the moving part drives the slider and takes place to remove along the horizontal direction of sliding rod lateral wall to remove the collecting box under the cleaning brush, and then collect the molten steel that is stained with on the cleaning brush through the collecting box, reduced the molten steel on the cleaning brush and dripped in the molten steel of ladle, caused the molten steel of ladle the possibility that splashes everywhere inside.

Preferably, the moving member comprises a moving motor, a driving gear, a driven gear, a moving rod, a support, a moving gear and a moving rack, wherein the moving motor is provided with the outer side wall of the collecting box, the driving gear is arranged at the output end of the moving motor, the driven gear is arranged on the side wall of the moving rod, the driving gear and the driven gear are meshed with each other, the support is arranged on the outer side wall of the collecting box, the moving rod is rotationally connected to the inside of the support, the moving gear is arranged at the end part of the moving rod, the moving gear is positioned in the sliding groove, and the moving rack is arranged on the inner wall of the sliding groove and meshed with the moving rack.

Through adopting above-mentioned technical scheme, the movable motor passes through the driving gear, driven gear drives the movable rod and rotates, the movable rod drives the movable gear and rotates, so that the sliding block takes place to remove along the horizontal direction of the inslot wall that slides, thereby remove the collecting box to under the cleaning brush, and then collect the molten steel of dripping on the cleaning brush through the collecting box, the molten steel drip in the ladle on having reduced the cleaning brush, cause the possibility that molten steel in the ladle splashes to the tank cover inner wall, thereby reduced the cleaning frequency of smelting worker to tank cover inner wall molten steel, improved the work efficiency of smelting worker.

Preferably, shielding plates are arranged on two sides of the collecting box, connecting blocks are arranged on one sides, close to the collecting box, of the shielding plates, connecting grooves are formed in one sides, far away from the vacuum tank, of the collecting box along the horizontal direction, and opening and closing pieces are arranged on the collecting box and used for driving the two connecting blocks to move oppositely or move back to back.

Through adopting above-mentioned technical scheme, after the surface of cleaning brush does not drip the molten steel, the piece that opens and shuts drives two connecting blocks and moves each other to drive two shielding plates and move in opposite directions, so that two shielding plates shelter from the upper surface of collecting box, and then reduce the cover and remove the in-process, the possibility that the molten steel of drip in the inside of collecting box outwards overflows.

Preferably, the opening and closing piece comprises a bidirectional screw rod, an opening and closing main bevel gear and an opening and closing auxiliary bevel gear, the bidirectional screw rod is rotationally connected to the inner wall of the connecting groove, one end of the bidirectional screw rod penetrates through the outer side wall of the collecting box, the opening and closing main bevel gear is arranged on the side wall of the bidirectional screw rod, the opening and closing auxiliary bevel gear is arranged on the side wall of the moving rod, and the opening and closing main bevel gear and the opening and closing auxiliary bevel gear are meshed with each other.

Through adopting above-mentioned technical scheme, when the carriage release lever pivoted, through opening and shutting main bevel gear and opening and shutting follow the bevel gear and drive two-way lead screw and take place to rotate, two connecting blocks of two drive are moved towards one side that is close to each other to drive two shielding plates and move in opposite directions, effectively shelter from the uncovered department of collecting box, when having reduced the cover and break away from the vacuum jar upper surface, the outwards unrestrained possibility of molten steel of collecting in the collecting box, and then reduced the cleaning number of times of smelting worker, improved the work efficiency of smelting worker.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the lifting transmission mechanism drives the lifting plate to move along the vertical direction of the guide upright post, the lifting plate drives the lifting rod to synchronously move along the vertical direction, the lifting rod drives the temperature measuring piece to synchronously move along the vertical direction, so that the temperature of molten steel in the ladle is easily measured by a smelting worker in a vacuum environment, the possibility that a gap exists between the molten steel in the vacuum furnace after the molten steel is broken in vacuum and the expected temperature is effectively reduced, the possibility that the smelting worker needs to return the molten steel in the ladle to the previous working procedure for heat compensation or wait for cooling in the atmosphere is reduced, the quality of the molten steel is further improved, and the quality of casting finished products is effectively improved.

2. The setting of cleaning brush to when the temperature measurement spare is measured and is ended to one side that keeps away from the vacuum tank and remove, and when the temperature measurement spare passed through the inside of clean pipe, cleaning brush cleared up the surface of temperature measurement spare, thereby reduced the possibility that the temperature measurement spare surface was infected with the molten steel, and then reduced the molten steel solidification and caused the possibility that influences to the temperature measurement accuracy when the temperature measurement spare was used once more on the temperature measurement spare surface.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an online temperature measuring device for a VD-VOD vacuum furnace according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of an embodiment of the present application for embodying a lifting drive.

Fig. 3 is a cross-sectional view of an embodiment of the present application for embodying a mover structure.

Reference numerals illustrate:

1. a vacuum tank; 11. a ladle; 2. a can lid; 21. installing a pipe; 211. a sealing device; 22. a controller; 221. a temperature display screen; 23. an auxiliary frame; 231. a detector; 2311. an opposite-emission photoelectric switch; 24. a stabilizing rod; 241. a stabilizing groove; 2411. a stabilizing block; 25. a mounting rod; 3. a guide column; 31. a lifting plate; 311. a lifting rod; 3111. a temperature measuring member; 3112. a limiting block; 32. a communication hole; 321. a fixed pulley; 33. an access hole; 34. an access hole; 4. a lifting transmission mechanism; 41. a support block; 42. a rope winding rod; 43. a lifting rope; 44. a transmission member; 441. a drive motor; 442. a sprocket; 443. a chain; 5. a connecting frame; 51. cleaning the tube; 511. cleaning a brush; 6. a driving motor; 61. driving a worm; 611. a drive worm wheel; 7. a support rod; 71. a slip groove; 711. a sliding rod; 7111. a sliding block; 8. a collection box; 81. a moving member; 811. a moving motor; 812. a drive gear; 813. a driven gear; 814. a moving rod; 815. a bracket; 816. a moving gear; 817. moving the rack; 82. a shielding plate; 821. a connecting block; 83. a connecting groove; 9. an opening and closing member; 91. a two-way screw rod; 92. opening and closing the main bevel gear; 93. opening and closing the slave bevel gears.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses an online temperature measuring device for a VD-VOD vacuum furnace. Referring to fig. 1 and 2, the on-line temperature measuring apparatus includes a vacuum tank 1, a ladle 11 is placed inside the vacuum tank 1, a tank cover 2 is installed on the upper surface of the vacuum tank 1, the upper surface welding of cover 2 has with the inside communicating mounting tube 21 of cover 2, and the inside sliding connection of mounting tube 21 has the temperature measurement piece 3111, and temperature measurement piece 3111 is bimetallic platinum rhodium thermal resistor in this application embodiment. The one end that vacuum tank 1 was kept away from to temperature measurement piece 3111 has lifter 311 through bolted connection, lifter 311 sliding connection in the inside of installation pipe 21, and sealing device 211 is installed to the one end that tank cover 2 was kept away from to installation pipe 21, and sealing device 211 adopts high temperature resistant fluorine to make in this application embodiment to improve the leakproofness of lifter 311 when the inside slip of installation pipe 21 through sealing device 211. The lifter 311 is kept away from the one end welding of temperature measurement piece 3111 and is had lifter plate 31, and lifter plate 31's inside sliding connection has guide post 3, and guide post 3 welds in the upper surface of cover 2, and guide post 3 is the square pole in this embodiment, is provided with lift drive mechanism 4 on the guide post 3 to be used for driving lifter plate 31 and take place to remove along the vertical direction of guide post 3.

Referring to fig. 1 and 2, when a smelting worker needs to measure the temperature of molten steel in the ladle 11, the lifting transmission mechanism 4 drives the lifting plate 31 to move towards the upper surface of the tank cover 2 along the vertical direction of the guide upright post 3, the lifting plate 31 drives the lifting rod 311 to synchronously move along the vertical direction, the lifting rod 311 drives the temperature measuring piece 3111 to move towards one side of the ladle 11 until the temperature measuring piece 3111 is immersed into the molten steel for measurement, and the molten steel in the ladle 11 is still in a vacuum environment at this time, so that the possibility that a gap exists between the molten steel in the vacuum furnace and the expected temperature after the molten steel breaks vacuum is effectively reduced, the possibility that the smelting worker needs to return the molten steel in the ladle 11 to the previous working procedure for heat supplement or wait for cooling in the atmosphere is reduced, the quality of the molten steel is further improved, and the quality of casting finished products is effectively improved.

Referring to fig. 1 and 2, the temperature measuring part 3111 is electrically connected to the controller 22, the controller 22 is electrically connected to the temperature display screen 221, and the controller 22 and the temperature display screen 221 are both connected to the upper surface of the can lid 2 through bolts; thereby being convenient for a smelting worker to read out the indication number of the temperature measuring piece 3111 through the temperature display screen 221, and further improving the working efficiency of the vacuum furnace.

Referring to fig. 1 and 2, the lifting transmission mechanism 4 includes a supporting block 41, a rope winding rod 42, a lifting rope 43 and a transmission member 44, the transmission member 44 includes a transmission motor 441, two sprockets 442 and a chain 443, the transmission motor 441 is connected to the side wall of the guide upright 3 through bolts, one of the sprockets 442 is welded and sleeved at the output end of the transmission motor 441, the supporting block 41 is welded to the side wall of the guide upright 3, the rope winding rod 42 is rotationally connected to the inside of the supporting block 41, the other sprocket 442 is welded and sleeved at the side wall of the rope winding rod 42, and the chain 443 is sleeved at the side wall of the two sprockets 442. One end of the lifting rope 43 is adhered to the side wall of the rope winding rod 42 through glue, the inside of the guide upright post 3 is provided with a communication hole 32, the side wall of the guide upright post 3 is provided with an access hole 33 and an access hole 34, the access hole 33 is positioned below the access hole 34, and one end of the lifting rope 43, which is far away from the rope winding rod 42, sequentially penetrates through the insides of the access hole 33, the communication hole 32 and the access hole 34 and is wound on the upper surface of the lifting plate 31. So that the smelting worker starts the transmission motor 441, the transmission motor 441 drives the rope winding rod 42 to rotate anticlockwise through the chain wheel 442 and the chain 443, so that the lifting rope 43 on the rope winding rod 42 is released, at the moment, the lifting plate 31 moves towards one side of the tank cover 2, the lifting plate 31 drives the lifting rod 311 to move towards one side of the ladle 11, and the lifting rod 311 drives the temperature measuring piece 3111 to synchronously move towards one side of the ladle 11 until the temperature measuring piece 3111 is immersed into the ladle 11 to measure the temperature of molten steel.

Referring to fig. 2, fixed pulleys 321 are disposed at both ends of the inner wall of the communication hole 32, and the lifting rope 43 is connected to the fixed pulleys 321, so that friction force generated when the lifting rope 43 slides on the inner wall of the communication hole 32 is reduced, and the service life of the lifting rope 43 is prolonged.

Referring to fig. 1, a limiting block 3112 is welded to a side wall of a lifting rod 311, an auxiliary frame 23 is welded to an upper surface of a tank cover 2, a detector 231 is mounted on the auxiliary frame 23, the detector 231 includes two opposite type photoelectric switches 2311, the two opposite type photoelectric switches 2311 are symmetrically arranged, one opposite type photoelectric switch 2311 is connected to one side of the auxiliary frame 23 through a bolt, the other opposite type photoelectric switch 2311 is connected to the other side of the auxiliary frame 23 through a bolt so as to be used for detecting whether a temperature measuring piece 3111 is located inside a mounting tube 21, the detector 231 is electrically connected to a controller 22, the controller 22 is electrically connected to a transmission motor 441, the transmission motor 441 is used for receiving detection information of the detector 231, and when the temperature measuring piece 3111 is located inside the mounting tube 21, the transmission motor 441 is stopped from being started, so that when the temperature measuring piece 3111 is separated from the interior of a ladle 11, intelligent operation is achieved without paying attention to a moving position of the lifting rod 311, and working efficiency of a smelting worker is improved.

Referring to fig. 2, the inner wall of the can lid 2 is connected with a driving motor 6 through a bolt, the output end of the driving motor 6 is connected with a driving worm 61 through a bolt, one end of the driving worm 61 away from the driving motor 6 is rotatably connected to the inner wall of the can lid 2, one side of the driving worm 61 is provided with a driving worm wheel 611, and the driving worm 61 and the driving worm wheel 611 are meshed with each other; the cleaning tube 51 is embedded in the driving worm wheel 611, the connecting frame 5 is rotatably connected to the outer side wall of the cleaning tube 51, the connecting frame 5 is welded to the inner wall of the tank cover 2, and the cleaning brush 511 is adhered to the inner wall of the cleaning tube 51 through glue.

Referring to fig. 2, when the temperature measuring member 3111 measures the temperature of molten steel in the ladle 11, the lifting transmission mechanism 4 drives the temperature measuring member 3111 to move toward the side close to the ladle cover 2, and at this time, the smelting worker turns on the driving motor 6, the driving motor 6 drives the driving worm 61 to rotate, the driving worm 61 drives the driving worm wheel 611 to rotate, and the driving worm wheel 611 drives the cleaning tube 51 to rotate. So that when the temperature measuring member 3111 moves to the cleaning brush 511, the cleaning brush 511 cleans the peripheral wall of the temperature measuring member 3111, reducing the possibility of contamination of the peripheral wall of the temperature measuring member 3111 with molten steel, and further reducing the possibility of solidification of molten steel on the surface of the temperature measuring member 3111 affecting the accuracy of the temperature measuring member 3111.

Referring to fig. 2 and 3, a collecting box 8 is provided at the lower side of the cleaning tube 51, a sliding block 7111 is welded at the lower surface of the collecting box 8, a supporting rod 7 is welded at the inner wall of the tank cover 2, a sliding groove 71 is provided at one side of the supporting rod 7 far from the vacuum tank 1 along the horizontal direction, a sliding rod 711 is welded at the inner wall of the sliding groove 71, the sliding block 7111 is slidably connected to the side wall of the sliding rod 711, and a moving member 81 is provided at the side wall of the collecting box 8 for driving the sliding block 7111 to move along the horizontal direction of the inner wall of the sliding groove 71.

Referring to fig. 3, the moving member 81 includes a moving motor 811, a driving gear 812, a driven gear 813, a moving rod 814, a bracket 815, a moving gear 816, and a moving rack 817, wherein the moving motor 811 is connected to an outer side wall of the collection box 8 through bolts, the driving gear 812 is welded and sleeved at an output end of the moving motor 811, the driving gear 812 and the driven gear 813 are meshed with each other, the moving rod 814 is welded and embedded in the driven gear 813, the bracket 815 is welded to an outer side wall of the collection box 8, the moving rod 814 is rotatably connected to the inside of the bracket 815, an end portion of the moving rod 814 extends into an inner wall of the sliding groove 71, the moving gear 816 is welded and sleeved at an end portion of the moving rod 814, the moving rack 817 is welded to an inner wall of the sliding groove 71, and the moving gear 816 and the moving rack 817 are meshed with each other.

Referring to fig. 3, a fixing rod 24 is welded inside the can lid 2, the fixing rod 24 and the supporting rod 7 are parallel to each other, a fixing groove 241 is formed in one side of the fixing rod 24 far away from the vacuum can 1 along the horizontal direction, a mounting rod 25 is welded on the inner wall of the fixing groove 241, a fixing block 2411 is slidably connected to the side wall of the mounting rod 25, and the fixing block 2411 is welded on the lower surface of the collecting box 8; thus, when the sliding block 7111 slides on the inner wall of the sliding groove 71, the stabilizing block 2411 slides on the inner wall of the stabilizing groove 241 synchronously, thereby improving the stability of the collecting box 8 when sliding along the horizontal direction.

Referring to fig. 2 and 3, when the temperature measuring part 3111 is used for measuring the temperature of molten steel in the ladle 11, and the cleaning brush 511 is used for cleaning the surface of the temperature measuring part 3111, the moving motor 811 is started, the moving motor 811 rotates through the driving gear 812, the driving gear 812 drives the driven gear 813 to rotate, the driven gear 813 drives the moving rod 814 to rotate, and the moving gear 816 rotates, so that the moving gear 816 is meshed with the moving rack 817; thereby drive sliding block 7111 and take place to remove along the lateral wall of sliding bar 711, sliding block 7111 drives collecting box 8 and takes place to remove along the horizontal direction in step, and then removes collecting box 8 to the below department of skew cleaning tube 51, has effectively reduced the possibility that temperature measurement piece 3111 carried out the temperature again and has led to the fact the influence to the molten steel in the ladle 11.

Referring to fig. 3, an opening and closing member 9 is provided on the collecting box 8, the opening and closing member 9 includes a bidirectional screw rod 91, an opening and closing main bevel gear 92 and an opening and closing auxiliary bevel gear 93, a connecting groove 83 is provided on the upper surface of the collecting box 8 along the horizontal direction, the bidirectional screw rod 91 is rotatably connected to the inner wall of the connecting groove 83, one end of the bidirectional screw rod 91 penetrates through the side wall of the collecting box 8, the opening and closing main bevel gear 92 is welded and sleeved on one end of a moving rod 814 away from the moving gear 816, the opening and closing auxiliary bevel gear 92 is welded and sleeved on the side wall of the bidirectional screw rod 91, the opening and closing main bevel gear 92 and the opening and closing auxiliary bevel gear 93 are meshed with each other, two ends of the bidirectional screw rod 91 are connected with connecting blocks 821 in a threaded manner, and one ends of the two connecting blocks 821 far from the vacuum tank 1 are welded with shielding plates 82 so as to close the opening of the collecting box 8 through the shielding plates 82. When the cleaning brush 511 surface dries and does not drip molten steel, the movable rod 814 rotates to move the collecting box 8 towards one side far away from the cleaning pipe 51, when the movable rod 814 rotates, the movable rod 814 drives the opening and closing main bevel gear 92 to rotate, the opening and closing main bevel gear 92 drives the opening and closing auxiliary bevel gear 93 to rotate, the opening and closing auxiliary bevel gear 93 drives the bidirectional screw rod 91 to rotate, so that the bidirectional screw rod 91 drives the two connecting blocks 821 to move towards one side close to each other, the two connecting blocks 821 synchronously drive the corresponding shielding plates 82 to move towards one side close to each other, and when the collecting box 8 moves to the position below the offset cleaning pipe 51, the shielding of the opening of the collecting box 8 is achieved by the two shielding plates 82, and the possibility that molten steel in the collecting box 8 spills out of the collecting box 8 in the process of taking the tank cover 2 from the upper surface of the vacuum tank 1 is reduced.

The implementation principle of the online temperature measuring device for the VD-VOD vacuum furnace is as follows: when the smelting worker needs to measure the temperature of the molten steel in the ladle 11, the transmission motor 441 is started, the transmission motor 441 drives the rope winding rod 42 to rotate anticlockwise through the chain wheel 442 and the chain 443, so that the lifting rope 43 on the rope winding rod 42 is released, at the moment, the lifting plate 31 moves towards the upper surface of the tank cover 2 along the vertical direction of the guide upright post 3, the lifting plate 31 drives the lifting rod 311 to synchronously move along the vertical direction, the lifting rod 311 drives the temperature measuring piece 3111 to move towards one side of the ladle 11 until the temperature measuring piece 3111 is immersed in the molten steel for measurement, and at the moment, the ladle 11 is still in a vacuum environment, so that the possibility of a gap between the broken molten steel in the vacuum furnace and the expected temperature is effectively reduced.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An online temperature measuring device for VD-VOD vacuum furnace, includes vacuum tank (1), the inside of vacuum tank (1) is provided with ladle (11), the upper surface of vacuum tank (1) is provided with cover (2), its characterized in that: the upper surface mounting of cover (2) has direction stand (3), the lateral wall sliding connection of direction stand (3) has lifter plate (31), one side that lifter plate (31) is close to cover (2) is provided with lifter (311), one end that lifter plate (31) was kept away from to lifter (311) is provided with temperature measurement spare (3111), the upper surface of cover (2) is provided with and covers inside communicating mounting tube (21) of (2), equal sliding connection of lifter plate (311) and temperature measurement spare (3111) is in the inside of mounting tube (21), one end that cover (2) was kept away from to mounting tube (21) is provided with sealing device (211) to improve the leakproofness of lifter plate (311) when the inside slip of mounting tube (21) through sealing device (211), be provided with lift drive mechanism (4) on direction stand (3) for driving lifter plate (31) and take place to remove along the vertical direction of direction stand (3).

2. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 1, wherein: the lifting transmission mechanism (4) comprises a supporting block (41), a rope winding rod (42), a lifting rope (43) and a transmission piece (44), wherein the supporting block (41) is arranged on the side wall of the guide upright post (3), the rope winding rod (42) is rotationally connected to the side wall of the supporting block (41), one end of the lifting rope (43) is arranged on the side wall of the rope winding rod (42), a communication hole (32) is formed in the guide upright post (3), an access hole (33) and an access hole (34) are formed in the side wall of the guide upright post (3), the access hole is located below the access hole (34), and one end, far away from the rope winding rod (42), of the lifting rope (43) sequentially penetrates through the access hole (33), the communication hole (32) and the inside of the access hole (34) and is connected to the upper surface of the lifting plate (31). The transmission member (44) comprises a transmission motor (441), two chain wheels (442) and a chain (443), wherein the transmission motor (441) is arranged on the side wall of the guide upright post (3), one chain wheel (442) is arranged at the output end of the transmission motor (441), the other chain wheel (442) is arranged on the side wall of the rope winding rod (42), and the chain (443) is sleeved on the side walls of the two chain wheels (442).

3. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 1, wherein: the temperature measuring piece (3111) is electrically connected to the controller (22), and the controller (22) is electrically connected to the temperature display screen (221).

4. An on-line temperature measuring device for VD-VOD vacuum furnace according to claim 3, wherein: the utility model discloses a temperature measuring device, including lifter (311), including cover (2), temperature measuring piece (3111), controller (22), drive motor (441), lifter (311)'s lateral wall is provided with stopper (3112), the upper surface of cover (2) is provided with auxiliary frame (23), be provided with detector (231) on auxiliary frame (23), detector (231) are used for detecting whether temperature measuring piece (3111) are located inside of installation pipe (21), detector (231) electricity is connected in controller (22), controller (22) electricity is connected in driving motor (441), driving motor (441) are used for receiving the detection information of detector (231) to after temperature measuring piece (3111) are located inside of installation pipe (21), stop starting driving motor (441).

5. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 1, wherein: the inside of cover (2) is provided with link (5), the one end that cover (2) was kept away from to link (5) is provided with cleaning tube (51), the inside of cleaning tube (51) is provided with cleaning brush (511).

6. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 5, wherein: the inner wall of the tank cover (2) is provided with a driving motor (6), the output end of the driving motor (6) is connected with a driving worm (61), one end, far away from the driving motor (6), of the driving worm (61) is rotationally connected to the inner wall of the tank cover (2), the side wall of the cleaning pipe (511) is provided with a driving worm wheel (611), and the driving worm (61) and the driving worm wheel (611) are meshed with each other.

7. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 5, wherein: the inner wall of cover (2) is provided with bracing piece (7), bracing piece (7) are kept away from one side of vacuum tank (1) and are offered along the horizontal direction and slide groove (71), the inner wall in slide groove (71) is provided with slide bar (711), the lateral wall sliding connection of slide bar (711) has slider (7111), the upper surface of slider (7111) is provided with collection box (8) to be used for collecting the molten steel that is stained with on cleaning brush (511), be provided with moving part (81) on collection box (8) for driving slider (7111) and take place to remove along the horizontal direction.

8. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 7, wherein: the utility model provides a movable part (81) is including removing motor (811), driving gear (812), driven gear (813), movable rod (814), support (815), movable gear (816), removal rack (817), remove motor (811) and set up in the lateral wall of collecting box (8), driving gear (812) set up in the output of movable motor (811), driven gear (813) set up in the lateral wall of movable rod (814), driving gear (812) and driven gear (813) intermeshing, support (815) set up in the lateral wall of collecting box (8), movable rod (814) rotate and connect in the inside of support (815), movable gear (816) set up in the tip of movable rod (814), movable gear (816) are located inside of sliding groove (71), movable rack (817) set up in the inner wall of sliding groove (71), movable gear (816) and movable rack (817) intermeshing.

9. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 8, wherein: both sides of collecting box (8) all are provided with shielding plate (82), two shielding plate (82) all are provided with connecting block (821) near one side of collecting box (8), connecting groove (83) have been seted up along the horizontal direction to one side that vacuum tank (1) was kept away from to collecting box (8), be provided with on collecting box (8) and open and shut piece (9) to be used for driving two connecting blocks (821) opposite directions motion or opposite directions motion.

10. The on-line temperature measuring device for VD-VOD vacuum furnace according to claim 9, wherein: the utility model provides a piece that opens and shuts (9) include two-way lead screw (91), open and shut main bevel gear (92) and open and shut from bevel gear (93), two-way lead screw (91) rotate and connect in spread groove (83) inner wall, the lateral wall of collecting box (8) is passed to one end of two-way lead screw (91), open and shut main bevel gear (92) set up in the lateral wall of two-way lead screw (91), open and shut from bevel gear (93) set up in the lateral wall of movable rod (814), open and shut main bevel gear (92) and open and shut from bevel gear (93) intermeshing.