Cold start ignition electroslag furnace in steel electrode blank crystallizer

Abstract

The invention belongs to the technical field of electroslag remelting ferrous metallurgy, particularly relates to a cold start ignition electroslag furnace in a steel type electrode blank crystallizer, and provides the following scheme aiming at the problem that an existing electroslag furnace cannot treat splashing melt and smoke: the cold start ignition electroslag furnace comprises a pit in which a furnace body is arranged; a machine frame base is arranged outside the furnace body, the bottom of the machine frame base is fixedly connected with the upper side of the pit, a furnace cover is arranged on the upper side of the furnace body, a slag and smoke treatment module is arranged above the furnace body, and three rapid disassembly and assembly modules are arranged above the machine frame base. According to the cold start ignition electroslag furnace in the steel grade electrode blank crystallizer, disclosed by the invention, slag and smoke splashed in the furnace body can be treated in time by the device, so that the slag cannot be attached to equipment to cause crusting or equipment burning, the normal operation and service life of the equipment are ensured, and the production cost is reduced. And the adverse effect of the smoke on the body health of workers is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electroslag remelting steel metallurgy, and particularly to an electroslag furnace with cold start ignition inside the crystallizer of the electrode blank of this steel grade. Background Art

[0002] Electroslag remelted steel is a smelting method that uses the resistance heat generated when current passes through molten slag as the heat source. The main purpose is to purify the metal and obtain an ingot with a clean, uniform and dense structure. The steel remelted by electroslag has high purity, low sulfur content, few non-metallic inclusions, a smooth surface, is clean, uniform and dense, and has a uniform metallographic structure and chemical composition. The as-cast mechanical properties of electroslag steel can reach or exceed the indicators of forgings of the same steel grade.

[0003] In the existing electroslag furnace, after inserting the graphite electrode into the electroslag furnace and energizing it, the resistance heat will quickly melt the scrap steel in the furnace. During this process, the molten material in the furnace will splash violently and generate a large amount of thick smoke. After the splashed molten material splashes outside the furnace, it will cool and form a crust on the electroslag furnace and the equipment around the furnace, resulting in the affected operation of the equipment. In severe cases, the equipment may even be burned out. Summary of the Invention

[0004] The present invention discloses an electroslag furnace with cold start ignition inside the crystallizer of the electrode blank of this steel grade, aiming to solve the technical problem in the background art that the existing electroslag furnace cannot handle the splashed molten material and smoke.

[0005] An electroslag furnace with cold start ignition inside the crystallizer of the electrode blank of this steel grade proposed by the present invention includes a pit. A furnace body is arranged inside the pit. A frame base is arranged outside the furnace body, and the bottom of the frame base is fixedly connected to the upper side of the pit. A furnace cover is arranged on the upper side of the furnace body, and a molten slag and smoke treatment module is arranged above the furnace body. Three quick disassembly and assembly modules are arranged above the frame base, and the quick disassembly and assembly modules are all located on the molten slag and smoke treatment module. A lifting frame is arranged on the upper side of the frame base, and an electrode clamping arm is arranged on the upper side of the lifting frame. Three electrodes are arranged on the electrode clamping arm at equal circumferential intervals;

[0006] The molten slag and smoke treatment module includes an isolation cover. A restraint plate is arranged on the side of the isolation cover away from the furnace cover, and a high-pressure spray head and a brush plate are arranged on the restraint plate;

[0007] The quick disassembly and assembly module includes a fixing plate and a pin.

[0008] By arranging the furnace body, electrodes, furnace cover, molten slag and smoke treatment module and quick disassembly and assembly module, the device can use the molten slag and smoke treatment module to enable the device to timely handle the splashed molten slag and smoke in the furnace body, so that the molten slag will not adhere to the equipment, causing crusting or burning out of the equipment, ensuring the normal operation and service life of the equipment, and avoiding the adverse impact of smoke on the physical health of workers.

[0009] In a preferred embodiment, four symmetric brackets are fixedly connected to the upper side of the frame base. The same movable rail is fixedly connected to the outside of the four brackets. Two symmetric moving platforms are slidably connected to the movable rail. Vertical frames are fixedly connected to the upper sides of the moving platforms. The same annular frame is fixedly connected to the upper sides of the two vertical frames. The inner wall of the annular frame is slidably connected to the outside of the isolation cover, and three insertion holes are equidistantly distributed in a circumferential manner on the isolation cover; two symmetric racks are fixedly connected to the upper side of the movable rail. Rectangular grooves are provided on both moving platforms. First gears are arranged in the rectangular grooves. The first gears are meshed with the racks on the same side. Synchronous motors are fixedly connected to the upper sides of the moving platforms. The output ends of the synchronous motors are connected to one side of the first gears on the same side through couplings. A collection groove is provided on the upper side of the isolation cover. A notch is provided on the inner wall of the collection groove. A discharge pipe is fixedly connected in the notch; a smoke collection groove is fixedly connected to the bottom of the isolation cover. A rectangular opening is provided on the smoke collection groove. A smoke exhaust pipe is fixedly connected in the rectangular opening. A pump is fixedly connected to the outside of the smoke exhaust pipe. The output end of the pump is connected to the smoke exhaust pipe through a pipeline. An external gear ring is fixedly connected to the outside of the isolation cover. An annular rail is fixedly connected to the upper side of the isolation cover; a movable seat is slidably connected to the inner wall of the annular rail. A first motor is arranged on the movable seat. The output end of the first motor is connected to a second gear through a coupling. The second gear is meshed with the external gear ring. The restraint plate is located above the isolation cover. The side of the restraint plate opposite to the movable seat is fixedly connected. A cutting groove is provided on the restraint plate. The inner wall of the cutting groove is slidably connected to the outside of the sliding seat. Two symmetric orifices are provided on the sliding seat. A second motor is arranged on the sliding seat. The inner walls of the two orifices are respectively fixedly connected to the outside of a high-pressure nozzle and the second motor; the output end of the second motor is connected to the outside of a brush plate through a coupling. A first transmission plate is movably connected to the outside of the sliding seat. A notch is provided at one end of the first transmission plate away from the sliding seat. A round rod is movably connected in the notch. The outside of the round rod is movably connected to a second transmission plate. One end of the second transmission plate away from the first transmission plate is movably connected to a pedestal; a torsion spring is wound around the outside of the round rod. One end of the torsion spring is fixedly connected to the outside of the first transmission plate, and the other end is fixedly connected to the outside of the second transmission plate. The bottom of the pedestal is fixedly connected to the upper side of the restraint plate. A slot hole is provided on the pedestal; two symmetric convex platforms are fixedly connected to the upper side of the restraint plate. The same wire winding roller is movably connected to the side of the two convex platforms opposite to each other. A steel wire rope is wound around the wire winding roller. One end of the steel wire rope away from the wire winding roller is fixedly connected to the outside of the sliding seat. A third motor is fixedly connected to one of the convex platforms. The output end of the third motor is connected to one side of the wire winding roller through a coupling.

[0010] By providing a slag and smoke treatment module, the slag and smoke treatment module can make the device move omnidirectionally on the isolation cover by using the movable seat, the second transmission plate, the torsion spring and the sliding seat, so that the brush plate and the high-pressure nozzle can timely and effectively treat the slag splashed out of the furnace body, greatly improving the cleaning efficiency of the slag; by using the movable moving table and the annular frame, when the device needs to open the furnace cover, the isolation cover can be quickly removed from above the furnace body, reducing the interference with the operation of opening and closing the furnace cover and improving the smoothness of the slag-making process.

[0011] In a preferred solution, the three fixing plates are fixedly connected to the side opposite to the isolation cover, the upper side of the bolt is fixedly connected to the bottom of the fixing plate on the same side, the outer part of the bolt is inserted with a stabilizing seat, three circular openings are provided on the upper side of the annular frame at equal circumferential intervals, the inner walls of the circular openings are fixedly connected to the outer part of the stabilizing seat on the same side, and three sliding grooves are provided at equal circumferential intervals at the bottom of the stabilizing seat; a locking rod is slidably connected in each of the plurality of sliding grooves, an annular groove is provided on each of the bolts, the inner wall of the annular groove is clamped with the outer part of the three locking rods on the same side, and a rotating frame is movably connected to the bottom of each of the stabilizing seats, three curved grooves are provided at equal circumferential intervals on each of the rotating frames, a short shaft is fixedly connected to the bottom of each of the locking rods, the outer part of the short shaft is slidably connected to the inner wall of the curved groove on the same side, a coil spring is fixedly connected to the inner wall of each of the rotating frames, and one end of the coil spring far away from the rotating frame is fixedly connected to the bottom of the stabilizing seat on the same side.

[0012] By providing a quick disassembly and assembly module, the quick disassembly and assembly module uses the coil spring and the curved groove to enable the device to realize the automatic locking of the locking rod to the bolt. While ensuring that the isolation cover is stably fixed on the annular frame, it also improves the convenience of disassembly and assembly, greatly shortening the installation time of the isolation cover and improving the installation efficiency.

[0013] As can be seen from the above, an internal cold start ignition electroslag furnace for the electrode blank of this steel type provided by the present invention can enable the device to timely treat the slag and smoke splashed in the furnace body, so that the slag will not adhere to the equipment, causing crusting or burning of the equipment, ensuring the normal operation and service life of the equipment, and avoiding the adverse impact of the smoke on the physical health of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of an internal cold start ignition electroslag furnace for the electrode blank of this steel type proposed by the present invention;

[0015] Figure 2 is a schematic cross-sectional structure diagram of an internal cold start ignition electroslag furnace for the electrode blank of this steel type proposed by the present invention;

[0016] Figure 3Schematic diagram of the molten slag and smoke treatment module for the electroslag furnace ignited by internal cooling start-up in the mold of the electrode blank of this steel grade proposed by the present invention;

[0017] Figure 4 Schematic diagram of the moving table for the electroslag furnace ignited by internal cooling start-up in the mold of the electrode blank of this steel grade proposed by the present invention;

[0018] Figure 5 Schematic diagram of the isolation cover for the electroslag furnace ignited by internal cooling start-up in the mold of the electrode blank of this steel grade proposed by the present invention;

[0019] Figure 6 Schematic diagram of the restraint plate for the electroslag furnace ignited by internal cooling start-up in the mold of the electrode blank of this steel grade proposed by the present invention;

[0020] Figure 7 Schematic diagram of the quick disassembly and assembly module for the electroslag furnace ignited by internal cooling start-up in the mold of the electrode blank of this steel grade proposed by the present invention.

[0021] In the figure: 1, pit; 2, frame base; 3, furnace body; 4, lifting frame; 5, electrode clamping arm; 6, electrode; 7, furnace cover; 8, molten slag and smoke treatment module; 801, support; 802, movable rail; 803, annular frame; 804, isolation cover; 805, moving table; 806, vertical frame; 807, rack; 808, first gear; 809, synchronous motor; 810, insertion hole; 811, collection tank; 812, discharge pipe; 813, smoke collection tank; 814, smoke exhaust pipe; 815, pump; 816, external toothed ring; 817, annular rail; 818, movable seat; 819, first motor; 820, second gear; 821, restraint plate; 822, cutting groove; 823, sliding seat; 824, high-pressure spray head; 825, second motor; 826, brush plate; 827, first drive plate; 828, second drive plate; 829, torsion spring; 830, wire winding roller; 831, third motor; 832, steel wire rope; 9, quick disassembly and assembly module; 901, fixed plate; 902, bolt; 903, stable seat; 904, chute; 905, locking rod; 906, short shaft; 907, annular groove; 908, rotating frame; 909, curved groove; 910, coil spring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] An electroslag furnace ignited by internal cooling start-up in the mold of the electrode blank of this steel grade disclosed by the present invention is mainly applied to the scenario where the existing electroslag furnace cannot handle the splashing molten matter and smoke.

[0024] Reference Figures 1-7 , an internally cooled start-up igniting electroslag furnace for electrode blanks of this steel type, including a pit 1, a furnace body 3 is arranged in the pit 1, a frame base 2 is arranged outside the furnace body 3, the bottom of the frame base 2 is bolted to the upper side of the pit 1, a furnace cover 7 is arranged on the upper side of the furnace body 3, and a molten slag and smoke treatment module 8 is arranged above the furnace body 3. Three quick disassembly and assembly modules 9 are arranged above the frame base 2, and the quick disassembly and assembly modules 9 are all located on the molten slag and smoke treatment module 8. A lifting frame 4 is arranged on the upper side of the frame base 2, an electrode clamping arm 5 is arranged on the upper side of the lifting frame 4, and three electrodes 6 are arranged on the electrode clamping arm 5 at equal circumferential intervals;

[0025] The molten slag and smoke treatment module 8 includes an isolation cover 804, a restraint plate 821 is arranged on the side of the isolation cover 804 away from the furnace cover 7, and a high-pressure spray head 824 and a brush plate 826 are arranged on the restraint plate 821;

[0026] The quick disassembly and assembly module 9 includes a fixing plate 901 and a pin 902.

[0027] Specifically, lay a layer of compacted steel filings of this steel type on the dummy bar. The steel filings are in the shape of continuous fine filaments and long flocs, and are compacted. Surround the steel filings with fluorite, lay a layer of fluorite above the steel filings, and place compacted cylindrical steel filings of this steel type on the fluorite. Press the electrode blank for igniting and slag making against the steel filings to make full contact. Move the isolation cover 804 above the furnace cover 7, power on, and use the lifting frame 4 and the electrode clamping arm 5 to lower the electrode 6 in time according to the current situation to ensure that there is always current. After forming a small molten pool, for the remaining fluorite, white fused alumina and lime, simultaneously increase the voltage, increase the input power, accelerate the slag melting speed, raise the furnace temperature, use the molten slag and smoke treatment module 8 to cool and clean the splashed molten slag in the furnace body 3, absorb and discharge the overflowing smoke. When it is necessary to disassemble the isolation cover 804, use the quick disassembly and assembly module 9 to remove the isolation cover 804 from the annular frame 803; The device can use the molten slag and smoke treatment module 8 to enable the device to timely process the splashed molten slag and smoke in the furnace body 3, so that the molten slag will not adhere to the equipment, causing crusting or burning of the equipment, ensuring the normal operation and service life of the equipment, and avoiding the adverse impact of the smoke on the physical health of workers.

[0028] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6, in a preferred embodiment, four symmetric brackets 801 are bolted to the upper side of the frame base 2. The outer sides of the four brackets 801 are bolted to the same movable rail 802. Two symmetric moving platforms 805 are slidably connected to the movable rail 802. The upper sides of the moving platforms 805 are bolted to vertical frames 806 respectively. The upper sides of the two vertical frames 806 are bolted to the same annular frame 803. The inner wall of the annular frame 803 is slidably connected to the outer side of the isolation cover 804, and three insertion holes 810 are arranged on the isolation cover 804 at equal circumferential intervals; Two symmetric racks 807 are bolted to the upper side of the movable rail 802. Rectangular grooves are formed in both of the two moving platforms 805, and a first gear 808 is arranged in each rectangular groove. The first gears 808 are meshed with the racks 807 on the same side respectively. The upper sides of the moving platforms 805 are bolted to synchronous motors 809 respectively. The output end of the synchronous motor 809 is connected to one side of the first gear 808 on the same side through a coupling. A collection groove 811 is formed on the upper side of the isolation cover 804. A notch is formed in the inner wall of the collection groove 811, and a discharge pipe 812 is bolted in the notch; A smoke collection groove 813 is bolted to the bottom of the isolation cover 804. A rectangular opening is formed in the smoke collection groove 813, and a smoke exhaust pipe 814 is bolted in the rectangular opening. A pump 815 is bolted to the outer side of the smoke exhaust pipe 814. The output end of the pump 815 is connected to the smoke exhaust pipe 814 through a pipeline. An external gear ring 816 is bolted to the outer side of the isolation cover 804, and an annular rail 817 is bolted to the upper side of the isolation cover 804; A movable seat 818 is slidably connected to the inner wall of the annular rail 817. A first motor 819 is arranged on the movable seat 818. The output end of the first motor 819 is connected to a second gear 820 through a coupling. The second gear 820 is meshed with the external gear ring 816. A constraint plate 821 is located above the isolation cover 804. The side of the constraint plate 821 opposite to the movable seat 818 is bolted. A cutting groove 822 is formed in the constraint plate 821. The inner wall of the cutting groove 822 is slidably connected to the outer side of a sliding seat 823. Two symmetric orifices are formed in the sliding seat 823. A second motor 825 is arranged on the sliding seat 823. The inner walls of the two orifices are bolted to the outer sides of a high-pressure nozzle 824 and the second motor 825 respectively; The output end of the second motor 825 is connected to the outer side of a brush plate 826 through a coupling. One end of a transmission plate 827 is rotatably connected to the outer side of the sliding seat 823 through a bearing. A notch is formed at the end of the transmission plate 827 far away from the sliding seat 823. A round rod is rotatably connected in the notch through a bearing. The outer side of the round rod is rotatably connected to a transmission plate 828 through a bearing. The end of the transmission plate 828 far away from the transmission plate 827 is rotatably connected to a pedestal through a bearing; A torsion spring 829 is wound around the outer side of the round rod. One end of the torsion spring 829 is bolted to the outer side of the transmission plate 827, and the other end is bolted to the outer side of the transmission plate 828. The bottom of the pedestal is bolted to the upper side of the constraint plate 821, and a slot hole is formed in the pedestal;On the upper side of the restraint plate 821, two symmetrical bosses are connected by bolts. On the opposite sides of the two bosses, the same wire winding roller 830 is rotatably connected through bearings. A steel wire rope 832 is wound around the wire winding roller 830. One end of the steel wire rope 832 away from the wire winding roller 830 is connected to the outside of the sliding seat 823 by bolts. And on one of the bosses, a third motor 831 is connected by bolts. The output end of the third motor 831 is connected to one side of the wire winding roller 830 through a coupling.

[0029] Specifically, start the synchronous motor 809. The synchronous motor 809 drives the first gear 808 meshing with the rack 807 to rotate, so that the moving platform 805 drives the isolation cover 804 on the annular frame 803 to move directly above the furnace body 3, making the insertion hole 810 coincide with the furnace cover 7. After the electrode 6 is energized and inserted into the furnace body 3, the molten slag splashes out from the insertion hole 810 and lands on the isolation cover 804. Start the first motor 819. The first motor 819 drives the second gear 820 meshing with the external tooth ring 816 to rotate, so that the movable seat 818 drives the restraint plate 821 to perform circular motion on the annular rail 817. Water is supplied to the high-pressure nozzle 824. The high-pressure nozzle 824 sprays water onto the isolation cover 804 to cool the molten slag that has landed on the isolation cover 804. Start the second motor 825. The second motor 825 drives the brush plate 826 to polish and clean the molten slag on the isolation cover 804. Start the third motor 831. The third motor 831 drives the wire winding roller 830 to perform regular forward and reverse rotations, so that under the action of the torsion spring 829, the steel wire rope 832 can make the sliding seat 823 reciprocate on the cutting groove 822. Under the flushing of water, the polished molten slag falls along the inclined surface of the isolation cover 804 into the collection tank 811 and is discharged through the discharge pipe 812. Start the pump 815. The pump 815 drives the smoke exhaust pipe 814 to suck the smoke collection tank 813, so that the smoke overflowing from the furnace body 3 is absorbed by the smoke collection tank 813 and finally discharged through the smoke exhaust pipe 814.

[0030] In a specific application scenario, the molten slag and smoke treatment module 8 is mainly applicable to the molten slag and smoke treatment links in the molten slag and smoke treatment process, that is, the molten slag and smoke treatment module 8 can make the device move omnidirectionally on the isolation cover 804 by using the movable seat 818, the second transmission plate 828, the torsion spring 829 and the sliding seat 823, so that the brush plate 826 and the high-pressure nozzle 824 can timely and effectively treat the molten slag splashed from the furnace body 3, greatly improving the cleaning efficiency of the molten slag; by using the movable moving platform 805 and the annular frame 803, when the furnace cover 7 needs to be opened, the isolation cover 804 can be quickly moved away from directly above the furnace body 3, reducing the interference with the operation of opening and closing the furnace cover 7 and improving the smoothness of the slag-making process.

[0031] Refer to Figure 7, in a preferred embodiment, one side of each of the three fixing plates 901 facing the isolation cover 804 is connected by bolts. The upper side of the pin 902 and the bottom of the fixing plate 901 on the same side are both connected by bolts. A stabilizing seat 903 is inserted outside each of the pins 902. Three circular openings equally spaced in a circumferential direction are formed on the upper side of the annular frame 803. The inner walls of the circular openings are both connected to the outside of the stabilizing seat 903 on the same side by bolts, and three chutes 904 equally spaced in a circumferential direction are formed at the bottom of each of the stabilizing seats 903; A locking rod 905 is slidably connected in each of the plurality of chutes 904. An annular groove 907 is formed on each of the pins 902. The inner wall of the annular groove 907 is clamped to the outside of the three locking rods 905 on the same side. The bottom of each of the stabilizing seats 903 is rotatably connected to a rotating frame 908 by a bearing. Three curved grooves 909 equally spaced in a circumferential direction are formed on each of the rotating frames 908. The bottom of each of the locking rods 905 is connected to a short shaft 906 by bolts. The outside of the short shaft 906 is slidably connected to the inner wall of the curved groove 909 on the same side. A torsion spring 910 is connected to the inner wall of each of the rotating frames 908 by bolts. One end of the torsion spring 910 away from the rotating frame 908 is connected to the bottom of the stabilizing seat 903 on the same side by bolts.

[0032] Specifically, when it is necessary to remove the isolation cover 804 from the annular frame 803, rotate the rotating frame 908 against the torsion of the torsion spring 910. When the curved groove 909 on the rotating frame 908 rotates, it will push the short shaft 906 connected to the locking rod 905 to move away from the pin 902, thereby unlocking the locking of the locking rod 905 to the annular groove 907. Lift the isolation cover 804, and the fixing plate 901 connected to the chute 904 drives the pin 902 to be pulled out of the stabilizing seat 903, so as to remove the isolation cover 804 from the annular frame 803. After the isolation cover 804 is repaired or replaced, follow the above steps to reinstall the isolation cover 804 on the annular frame 803.

[0033] In a specific application scenario, the quick disassembly and assembly module 9 is mainly applicable to the quick disassembly and assembly link in the quick disassembly and assembly process, that is, the quick disassembly and assembly module 9 uses the torsion spring 910 and the curved groove 909 to enable the device to realize the automatic locking of the locking rod 905 to the pin 902. While ensuring that the isolation cover 804 is stably fixed on the annular frame 803, it also improves the convenience of disassembly and assembly, greatly shortens the installation time of the isolation cover 804, and improves the installation efficiency.

[0034] Working principle: Place a layer of compacted steel shavings of this steel grade on the dummy bar. The steel shavings are in the shape of continuous fine filaments and long flocs, and are compacted. Surround the steel shavings with fluorite, lay a layer of fluorite above the steel shavings, and place compacted cylindrical steel shavings of this steel grade on the fluorite. Press the electrode blank for ignition and slag formation against the steel shavings to ensure full contact. Move the isolation cover 804 above the furnace cover 7, supply power, and use the lifting frame 4 and the electrode clamping arm 5 to lower the electrode 6 in a timely manner according to the current situation to ensure that there is always current. After a small molten pool is formed, the remaining fluorite, white fused alumina and lime are added, and at the same time, the voltage is increased, the input power is increased, the slag melting speed is accelerated, the temperature in the furnace is increased, the synchronous motor 809 is started, and the synchronous motor 809 drives the gear one 808 meshing with the rack 807 to rotate, so that the moving table 805 drives the isolation cover 804 on the annular frame 803 to move directly above the furnace body 3, making the insertion hole 810 coincide with the furnace cover 7. After the electrode 6 is energized and inserted into the furnace body 3, the molten slag splashes out from the insertion hole 810 and lands on the isolation cover 804. Start the motor one 819, and the motor one 819 drives the gear two 820 meshing with the external gear ring 816 to rotate, so that the movable seat 818 drives the restraint plate 821 to perform circular motion on the annular track 817. Water is passed into the high-pressure nozzle 824, and the high-pressure nozzle 824 sprays water onto the isolation cover 804 to cool the molten slag falling on the isolation cover 804. Start the motor two 825, and the motor two 825 drives the brush plate 826 to polish and clean the molten slag on the isolation cover 804. Start the motor three 831, and the motor three 831 drives the winding roller 830 to rotate regularly in the forward and reverse directions, so that the steel wire rope 832 can make the sliding seat 823 reciprocate on the cut groove 822 under the action of the torsion spring 829. Under the flushing of water, the polished molten slag falls along the inclined surface of the isolation cover 804 into the collection tank 811 and is discharged through the discharge pipe 812. Start the pump 815, and the pump 815 drives the smoke exhaust pipe 814 to suck the smoke collection tank 813, so that the smoke overflowing from the furnace body 3 is absorbed by the smoke collection tank 813 and finally discharged through the smoke exhaust pipe 814, absorbing and discharging the overflowing smoke. When it is necessary to remove the isolation cover 804 from the annular frame 803, rotate the rotating frame 908 against the torsion of the coil spring 910. The curved surface groove 909 on the rotating frame 908 will push the short shaft 906 connected to the locking rod 905 to move away from the plug pin 902 during rotation, thereby unlocking the locking of the locking rod 905 on the annular groove 907. Lift the isolation cover 804, and the fixing plate 901 connected to the chute 904 drives the plug pin 902 to be pulled out of the stable seat 903, thereby removing the isolation cover 804 from the annular frame 803. After the isolation cover 804 is repaired or replaced, reinstall the isolation cover 804 on the annular frame 803 according to the above steps.

[0035] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A cold start ignition electroslag furnace for steel electrode billet crystallizer, comprising a pit (1), characterized in that: A furnace body (3) is arranged in the pit (1), a frame base (2) is arranged outside the furnace body (3), the bottom of the frame base (2) is fixedly connected to the upper side of the pit (1), a furnace cover (7) is arranged on the upper side of the furnace body (3), and a slag and smoke treatment module (8) is arranged above the furnace body (3), three quick disassembly modules (9) are arranged above the frame base (2), and the quick disassembly modules (9) are all located on the slag and smoke treatment module (8), a lifting frame (4) is arranged on the upper side of the frame base (2), an electrode clamping arm (5) is arranged on the upper side of the lifting frame (4), and three circumferentially equidistantly distributed electrodes (6) are arranged on the electrode clamping arm (5); The slag and smoke treatment module (8) comprises an isolation cover (804), a restraining plate (821) is arranged on a side of the isolation cover (804) away from the furnace cover (7), and a high-pressure nozzle (824) and a brush plate (826) are arranged on the restraining plate (821); The quick disassembly module (9) comprises a fixing plate (901) and a latch (902).

2. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 1 is characterized in that: Four symmetrical brackets (801) are fixedly connected to the upper side of the frame base (2); the outsides of the four brackets (801) are fixedly connected to a same movable rail (802); two symmetrical moving platforms (805) are slidably connected to the movable rail (802); the upper sides of the moving platforms (805) are fixedly connected to a stand (806); the upper sides of the two stand (806) are fixedly connected to a same annular frame (803); the inner wall of the annular frame (803) is slidably connected to the outside of an isolation cover (804); and the isolation cover (804) is provided with three insertion holes (810) equidistantly distributed around a circumference.

3. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 2 is characterized in that: Two symmetrical racks (807) are fixedly connected to the upper side of the movable rail (802); rectangular grooves are provided on the two moving platforms (805); gears (808) are provided in the rectangular grooves; gears (808) are meshed with the racks (807) on the same side; synchronous motors (809) are fixedly connected to the upper side of the moving platforms (805); the output end of the synchronous motor (809) is connected to one side of the gears (808) on the same side through a coupling; a collecting groove (811) is provided on the upper side of the isolation cover (804); a notch is provided on the inner wall of the collecting groove (811); a discharge pipe (812) is fixedly connected in the notch.

4. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 3 is characterized in that: The bottom of the isolation cover (804) is fixedly connected to a smoke collecting groove (813), a rectangular opening is opened on the smoke collecting groove (813), a smoke exhaust pipe (814) is fixedly connected inside the rectangular opening, a pump (815) is fixedly connected to the outside of the smoke exhaust pipe (814), an output end of the pump (815) is connected to the smoke exhaust pipe (814) through a pipeline, an external gear ring (816) is fixedly connected to the outside of the isolation cover (804), and a ring rail (817) is fixedly connected to the upper side of the isolation cover (804).

5. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 1 is characterized in that: The inner wall of the annular rail (817) is slidably connected to a movable seat (818), and a motor 1 (819) is arranged on the movable seat (818). The output end of the motor 1 (819) is connected to a gear 2 (820) through a coupling, and the gear 2 (820) is meshed with the outer gear ring (816). The constraint plate (821) is located above the isolation cover (804), and the constraint plate (821) is fixedly connected to the side opposite to the movable seat (818). A groove (822) is provided on the constraint plate (821), and the inner wall of the groove (822) is slidably connected to the outside of the sliding seat (823), and the sliding seat (823) is provided with two symmetrical orifices, and a motor 2 (825) is arranged on the sliding seat (823). The inner walls of the two orifices are respectively fixedly connected to the outside of the high-pressure nozzle (824) and the motor 2 (825).

6. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 5 is characterized in that: The output end of the second motor (825) is connected to the outside of the brush plate (826) through a coupling, and the outside of the sliding seat (823) is movably connected to the transmission plate (827), and a notch is opened at one end of the transmission plate (827) away from the sliding seat (823), and a round rod is movably connected in the notch, and the outside of the round rod is movably connected to the second transmission plate (828), and the end of the transmission plate (828) away from the transmission plate (827) is movably connected to a pedestal.

7. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 6 is characterized in that: A torsion spring (829) is wound around the outside of the round rod, one end of the torsion spring (829) is fixedly connected to the outside of the transmission plate 1 (827), and the other end is fixedly connected to the outside of the transmission plate 2 (828). The bottom of the base is fixedly connected to the upper side of the constraint plate (821), and a slot is opened on the base.

8. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 7 is characterized in that: Two symmetrical bosses are fixedly connected to the upper side of the constraint plate (821), and the opposite sides of the two bosses are movably connected to the same winding roller (830), a steel wire rope (832) is wound around the winding roller (830), and one end of the steel wire rope (832) away from the winding roller (830) is fixedly connected to the outside of the sliding seat (823), and one of the bosses is fixedly connected to a motor three (831), and the output end of the motor three (831) is connected to one side of the winding roller (830) through a coupling.

9. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 1 is characterized in that: The three fixed plates (901) are fixedly connected to the side opposite to the isolation cover (804); the upper side of the latch (902) is fixedly connected to the bottom of the fixed plate (901) on the same side; the outside of the latch (902) is plugged with a stabilizing seat (903); the upper side of the annular frame (803) is provided with three circular openings equidistantly distributed around the circumference; the inner walls of the circular openings are fixedly connected to the outside of the stabilizing seat (903) on the same side; and the bottom of the stabilizing seat (903) is provided with three sliding grooves equidistantly distributed around the circumference.

10. The cold start ignition electroslag furnace in the crystallizer of the steel electrode billet according to claim 9, characterized in that: A locking rod (905) is slidably connected in each of the plurality of sliding grooves (904); an annular groove (907) is provided on each of the latch pins (902); the inner wall of the annular groove (907) is engaged with the outer part of the three locking rods (905) on the same side; and a rotating frame (908) is movably connected to the bottom of each of the stabilizing seats (903); three curved grooves (909) equidistantly distributed around a circumference are provided on each of the rotating frames (908); a short shaft (906) is fixedly connected to the bottom of each of the locking rods (905); the outer part of the short shaft (906) is slidably connected to the inner wall of the curved groove (909) on the same side; and a coil spring (910) is fixedly connected to the inner wall of the rotating frame (908); the end of the coil spring (910) away from the rotating frame (908) is fixedly connected to the bottom of the stabilizing seat (903) on the same side.

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