An automatic furnace starting system for ferroalloy refining electric furnaces

Abstract

The present invention relates to the technical field of ferroalloy smelting, and in particular to an automatic furnace-starting system for a ferroalloy refining electric furnace. It includes a manipulator, on which a guide rail frame is connected. Two sliding blocks are slidably arranged on the guide rail frame, and a translation mechanism is also arranged on the guide rail frame, which is used to drive the sliding blocks to translate on the guide rail frame. A connecting frame and a guide rod are connected to one of the sliding blocks, and a hollow frame is slidably arranged on the guide rod. By introducing automatic components such as manipulators, brushless motors, and air pumps, the present invention reduces the dependence on manual operations, can automatically open and block the furnace eye, not only saves time and effort, improves the speed and accuracy of opening and blocking the furnace eye, but also speeds up the operation process of the ferroalloy refining electric furnace, improves the continuity and stability of the overall production, and uses an automatic system to replace the way of manually holding the blowpipe, avoiding misoperations caused by worker fatigue or skill differences and protecting the safety of operators.

Description

Technical Field

[0001] The present invention relates to the technical field of ferroalloy smelting, and particularly to an automatic furnace starting system for a ferroalloy refining electric furnace. Background Art

[0002] Ferroalloy refining is a key link in the metallurgical industry. Its purpose is to remove impurities in ferroalloys through physical or chemical methods and improve the quality of alloys. During the ferroalloy refining process, electric furnaces, as important smelting equipment, are widely used in the production of various ferroalloys. With the increasing requirements for product quality in modern manufacturing and the emphasis on production efficiency, safety, and environmental protection, traditional manual operations have gradually revealed many deficiencies.

[0003] Traditionally, after the electric furnace completes smelting, workers need to open the furnace eye to release the ferroalloy liquid. The specific steps are as follows: A worker holds a blowpipe by hand, then connects one end of the blowpipe to a gas source through a flexible connection, inserts the other end into the furnace eye, and then the gas source passes compressed gas into the blowpipe. In this way, the blocking material at the furnace eye is pushed away by the force of the compressed air and the manual thrust, so that the ferroalloy liquid flows from the furnace into the ladle for shaping. After this step is completed, the furnace eye needs to be blocked again to prepare for the next round of smelting. In the above operation, since the process of manually opening and blocking the furnace eye takes a long time and depends on the proficiency and physical strength of the workers, it is easy to cause time waste and unreasonable utilization of human resources, affecting the continuity and stability of production. In addition, frequent manual intervention also increases the possibility of errors. When a worker holds the blowpipe to open the furnace eye, if the connection between the blowpipe and the flexible connection is not tight enough, a backfire phenomenon may occur. Backfire means that the flame flows reversely into the gas supply pipeline, which not only may damage the equipment but also poses a serious safety hazard of fire or explosion to the operators. Summary of the Invention

[0004] In view of this, the present invention provides an automatic furnace starting system for a ferroalloy refining electric furnace, which can solve the disadvantages of being time-consuming, laborious, error-prone, and having safety hazards in the traditional manual operation of opening and blocking the furnace eye.

[0005] The technical solution is as follows: An automatic furnace starting system for a ferroalloy refining electric furnace includes a manipulator, a guide rail frame is connected to the manipulator, two sliding blocks are slidably arranged on the guide rail frame, and a translation mechanism is further arranged on the guide rail frame. The translation mechanism is used to drive the sliding blocks to translate on the guide rail frame. A connecting frame and a guide rod are connected to one of the sliding blocks. A hollow frame is slidably arranged on the guide rod. A rotating tube is rotationally communicated inside the hollow frame. An air supply mechanism is arranged on the guide rail frame. The air supply mechanism is used to input compressed gas into the hollow frame and the rotating tube. A torque sensor is slidably arranged on the connecting frame. The input end of the torque sensor is connected to the rotating tube, and the output end of the torque sensor is connected to a connecting pipe. An internal thread joint is arranged on the connecting pipe. The internal thread joint is used to dock with the furnace eye. By sending the compressed gas in the rotating tube to the furnace eye, the blocking material at the furnace eye is pushed away. A pressure sensor is arranged on the connecting pipe. A controller is installed on the connecting frame. A rotating mechanism for driving the rotating tube to rotate is further arranged on the connecting frame. A storage barrel for storing the blocking material is connected to the other sliding block. The storage barrel is provided with a feed inlet and a discharge outlet. A thread is provided at the feed inlet. A material pushing mechanism is arranged on the guide rail frame. The material pushing mechanism is used to push the blocking material in the storage barrel into the furnace eye to block the furnace eye.

[0006] Optionally, the translation mechanism includes a rack, a first brushless motor and a first gear. The racks are symmetrically arranged on the guide rail frame. The first brushless motor is installed on the sliding block. The first gear is connected to the first brushless motor, and the first gear meshes with the rack.

[0007] Optionally, the air supply mechanism includes a first air pump, a winding shaft, a spring and a first air pipe. The first air pump is installed on the side of the guide rail frame. The winding shaft is rotatably installed on the sliding block where the connecting frame is installed. A spring is arranged between the winding shaft and the sliding block where the connecting frame is installed. The first air pipe is wound around the winding shaft. The first air pipe penetrates through the winding shaft. The two ends of the first air pipe are respectively communicated with the air outlet of the first air pump and the hollow frame.

[0008] Optionally, the rotating mechanism includes a second gear, a second brushless motor, a third gear and a spring. The second gear is connected to the rotating tube. The second brushless motor is further installed on the sliding block where the connecting frame is installed. The third gear is connected to the second brushless motor. The second gear meshes with the third gear. A spring is arranged between the hollow frame and the sliding block where the connecting frame is installed.

[0009] Optionally, the material pushing mechanism includes a second air pump, a second air pipe, a plug cover, a nut and a piston. The second air pump is further installed on the side of the guide rail frame. The air outlet of the second air pump is communicated with the storage barrel through the second air pipe. A plug cover is arranged at the feed inlet of the storage barrel. A nut is rotatably arranged on the plug cover. The nut is in threaded fit with the thread at the feed inlet of the storage barrel. A piston is slidably arranged in the storage barrel. The piston is used to push the blocking material in the storage barrel towards the discharge outlet.

[0010] Optionally, it further includes a ceramic fiber gasket. The end of the connecting pipe is connected with a ceramic fiber gasket, and the ceramic fiber gasket is located inside the internal thread joint. The ceramic fiber gasket is used to seal the internal thread joint and the furnace eye.

[0011] Optionally, it further includes a cleaning mechanism. The cleaning mechanism includes a servo motor, an electric push rod, a connecting rod and a wire brush. The servo motor is installed at the end of the rotating pipe. The output shaft of the servo motor is connected with the electric push rod. The electric push rod is located inside the rotating pipe. The telescopic rod of the electric push rod is connected with the connecting rod. The connecting rod passes through the rotating pipe, the torque sensor and the connecting pipe. The end of the connecting rod is connected with the wire brush. The wire brush is located inside the connecting pipe. The wire brush is used to clean the inside of the furnace eye.

[0012] Optionally, it further includes a cooling mechanism. The cooling mechanism includes a shell-and-tube heat exchanger, a refrigerator, a water pump, a return pipe, a water delivery pipe, heat dissipation fins, a fan and an air outlet pipe. The shell-and-tube heat exchanger is arranged on the connecting frame. The inside of the shell-and-tube heat exchanger is in contact with the outer wall of the connecting pipe. The refrigerator and the water pump are installed on the guide rail frame. The water outlet of the water pump is communicated with the water inlet of the refrigerator. The water inlet of the water pump is communicated with the water outlet of the shell-and-tube heat exchanger through the return pipe. The water inlet of the shell-and-tube heat exchanger is communicated with the water outlet of the refrigerator through the water delivery pipe. Heat dissipation fins are arranged on the top of the refrigerator. The fan is installed on the guide rail frame. The fan is used to blow air on the heat dissipation fins. The air outlet pipe is also installed on the guide rail frame.

[0013] The beneficial effects of the present invention are as follows: 1. By introducing automated components such as a manipulator, a brushless motor, and an air pump, the present invention reduces the dependence on manual operation, can automatically open and block the furnace eye, not only saves time and effort, improves the speed and accuracy of opening and blocking the furnace eye, but also speeds up the operation process of the ferroalloy refining electric furnace, enhances the continuity and stability of the overall production, and uses an automated system to replace the way of manually holding a blowpipe, avoiding misoperations caused by worker fatigue or skill differences and protecting the safety of operators.

[0014] 2. By adding a wire brush cleaning device driven by a servo motor, the present invention can remove the slag in the furnace eye during each use, keep the furnace eye clean, prevent blockage, and also helps to improve the purity of the product.

[0015] 3. By equipping with a cooling system, the present invention can effectively reduce the temperature of the connecting pipe in a high-temperature environment, protect the internal components from damage, and enhance the durability and reliability of the whole system by taking away heat through circulating cooling water. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2Schematic three-dimensional structure diagram of the manipulator, guide rail frame and sliding block of the present invention.

[0018] Figure 3 Schematic three-dimensional structure diagram of the translation mechanism of the present invention.

[0019] Figure 4 Schematic three-dimensional structure diagram of the guide rod, first air pump and torque sensor of the present invention.

[0020] Figure 5 Schematic three-dimensional structure diagram of the air delivery mechanism and rotation mechanism of the present invention.

[0021] Figure 6 Schematic three-dimensional structure diagram of the hollow frame, rotating tube and first air pipe of the present invention.

[0022] Figure 7 Schematic three-dimensional structure diagram of the material pushing mechanism of the present invention.

[0023] Figure 8 Structure separation diagram of the material pushing mechanism of the present invention.

[0024] Figure 9 Schematic three-dimensional structure diagram of the ceramic fiber gasket and cleaning mechanism of the present invention.

[0025] Figure 10 Schematic three-dimensional structure diagram of the shell-and-tube heat exchanger, refrigerator and water pump of the present invention.

[0026] Figure 11 Schematic three-dimensional structure diagram of the heat dissipation fins, fan and air outlet pipe of the present invention.

[0027] Figure 12 Schematic three-dimensional structure diagram of the cooling mechanism of the present invention.

[0028] Explanation of reference numerals: 1, manipulator; 2, guide rail frame; 3, sliding block; 401, rack; 402, first brushless motor; 403, first gear; 5, connecting frame; 6, guide rod; 7, hollow frame; 8, rotating tube; 901, first air pump; 902, winding shaft; 903, spring; 904, first air pipe; 10, torque sensor; 11, connecting pipe; 12, internal thread joint; 13, air pressure sensor; 14, controller; 1501, second gear; 1502, second brushless motor; 1503, third gear; 1504, spring; 16, storage cylinder; 1701, second air pump; 1702, second air pipe; 1703, plug cover; 1704, nut; 1705, piston; 18, ceramic fiber gasket; 19, servo motor; 20, electric push rod; 21, connecting rod; 22, wire brush; 23, shell-and-tube heat exchanger; 24, refrigerator; 25, water pump; 26, return pipe; 27, water supply pipe; 28, heat dissipation fins; 29, fan; 30, air outlet pipe. Detailed implementation mode

[0029] The following is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention accordingly.

[0030] Embodiment: An automatic furnace starting system for ferroalloy refining electric furnaces. Refer to Figures 1-8 As shown, it includes a manipulator 1, and also includes a guide rail frame 2, a sliding block 3, a translation mechanism, a connecting frame 5, a guide rod 6, a hollow frame 7, a rotating pipe 8, a gas transmission mechanism, a torque sensor 10, a connecting pipe 11, an internal thread joint 12, a pressure sensor 13, a controller 14, a rotating mechanism, a storage cylinder 16 and a pushing mechanism; a guide rail frame 2 is connected to the manipulator 1; two sliding blocks 3 are slidably arranged on the guide rail frame 2, and the two sliding blocks 3 are distributed vertically; a translation mechanism is also arranged on the guide rail frame 2, and the translation mechanism is used to drive the sliding block 3 to translate on the guide rail frame 2; a connecting frame 5 is connected to the right side of the lower sliding block 3; two guide rods 6 are connected to the left side of the lower sliding block 3; a hollow frame 7 is slidably arranged between the two guide rods 6; a rotating pipe 8 is rotationally communicated in the hollow frame 7, and the rotating pipe 8 movably penetrates through the lower sliding block 3; a gas transmission mechanism is arranged on the guide rail frame 2, and the gas transmission mechanism is used to input compressed gas into the hollow frame 7 and the rotating pipe 8; a torque sensor 10 is slidably arranged on the connecting frame 5, the input end of the torque sensor 10 is connected to the right end of the rotating pipe 8, and the output end of the torque sensor 10 is connected to a connecting pipe 11; an internal thread joint 12 is arranged at the right end of the connecting pipe 11, and the internal thread joint 12 is used to dock with the furnace eye, and by sending the compressed gas in the rotating pipe 8 to the furnace eye, the plugging material at the furnace eye is pushed away; a pressure sensor 13 is arranged at the left part of the front side of the connecting pipe 11; a controller 14 is installed at the bottom of the connecting frame 5, and both the torque sensor 10 and the pressure sensor 13 are electrically connected to the controller 14; a rotating mechanism for driving the rotating pipe 8 to rotate is also arranged on the connecting frame 5; a storage cylinder 16 for storing plugging material is connected to the upper sliding block 3, a feed inlet is arranged at the left side of the top of the storage cylinder 16, threads are arranged at the feed inlet, and a discharge outlet is arranged at the right side of the storage cylinder 16; a pushing mechanism is arranged on the guide rail frame 2, and the pushing mechanism is used to push the plugging material in the storage cylinder 16 into the furnace eye to block the furnace eye.

[0031] Refer to Figure 3 As shown, the translation mechanism includes a rack 401, a first brushless motor 402 and a first gear 403; four racks 401 are symmetrically arranged up and down on the guide rail frame 2; four first brushless motors 402 are installed on both the upper and lower sliding blocks 3, and the first brushless motors 402 are electrically connected to the controller 14; a first gear 403 is connected to the first brushless motor 402, the upper first gear 403 meshes with the upper rack 401, and the lower first gear 403 meshes with the lower rack 401.

[0032] Refer to Figures 4-6As shown, the gas transmission mechanism includes a first air pump 901, a winding shaft 902, a spring 903, and a first air pipe 904; the first air pump 901 is installed on the front left side of the guide rail frame 2; the winding shaft 902 is rotatably installed on the front side of the lower slider 3; both ends of the spring 903 are respectively connected to the rear side of the winding shaft 902 and the front side of the lower slider 3; the first air pipe 904 is wound around the winding shaft 902, the first air pipe 904 passes through the middle of the winding shaft 902, and both ends of the first air pipe 904 are respectively connected to the air outlet of the first air pump 901 and the hollow frame 7.

[0033] See Figure 4 and Figure 5 As shown, the rotating mechanism includes a second gear 1501, a second brushless motor 1502, a third gear 1503, and a spring 1504; the second gear 1501 is connected to the rotating tube 8; the second brushless motor 1502 is installed on the lower side of the lower slider 3, and the second brushless motor 1502 is electrically connected to the controller 14; the third gear 1503 is connected to the second brushless motor 1502, and the second gear 1501 meshes with the third gear 1503; a spring 1504 is connected between the right side of the hollow frame 7 and the left side of the lower slider 3.

[0034] See Figure 7 and Figure 8 As shown, the material pushing mechanism includes a second air pump 1701, a second air pipe 1702, a plug cover 1703, a nut 1704, and a piston 1705; the second air pump 1701 is installed on the rear side of the guide rail frame 2; the air outlet of the second air pump 1701 is connected to the left side of the storage barrel 16 through the second air pipe 1702; a plug cover 1703 is provided at the feed inlet of the storage barrel 16; a nut 1704 is rotatably provided on the plug cover 1703, and the nut 1704 is in threaded fit with the feed inlet of the storage barrel 16; a piston 1705 is slidably provided inside the storage barrel 16, and the piston 1705 is used to push the blocked material in the storage barrel 16 towards the discharge port.

[0035] In use, turn the nut 1704 to rotate, so that the nut 1704 is loosened from the feed port of the storage cylinder 16. Then lift the plug cover 1703 upwards. Next, load the plugging material into the storage cylinder 16 from the feed port until an appropriate amount of plugging material is loaded into the storage cylinder 16. Then plug the plug cover 1703 downwards and turn the nut 1704 in the reverse direction to fix the nut 1704 at the feed port of the storage cylinder 16. In this way, the feeding operation of the plugging material can be completed. After that, when it is necessary to push the plugging material at the furnace eye, control the manipulator 1 to drive the guide rail frame 2 and the components thereon to move until the internal thread joint 12 is aligned with the furnace eye and at a certain distance (the internal thread joint 12 is directly to the left of the furnace eye). Then drive the third gear 1503 to rotate through the second brushless motor 1502, so that the third gear 1503 drives the second gear 1501 and the rotating tube 8 to rotate, thereby driving the rotating tube 8 to drive the connecting tube 11 and the internal thread joint 12 to rotate synchronously through the torque sensor 10. At the same time, drive the first gear 403 to rotate through the lower first brushless motor 402, so that the lower first gear 403 rolls to the right on the lower rack 401, thereby driving the lower sliding block 3, the connecting frame 5, the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal thread joint 12 to move to the right, making the internal thread joint 12 approach the furnace eye. During the movement of the lower sliding block 3 to the right, the lower sliding block 3 will also drive the winding shaft 902 to move to the right. Under the pulling force of the first air pipe 904, the first air pipe 904 will drive the winding shaft 902 to rotate, so that the winding shaft 902 unwinds the first air pipe 904 and the spring 903 deforms. When the internal thread joint 12 contacts the furnace eye, there are two cases at this time: If the thread in the internal thread joint 12 just matches the thread at the furnace eye, the internal thread joint 12 will be screwed into the furnace eye by rotation to dock the internal thread joint 12 with the furnace eye; If the thread in the internal thread joint 12 does not match the thread at the furnace eye, the furnace eye will block the rightward movement of the internal thread joint 12, stopping the movement of the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal thread joint 12. When the lower sliding block 3 and the connecting frame 5 continue to move to the right, the spring 1504 is stretched. When the internal thread joint 12 is rotated until the thread therein matches the thread at the furnace eye, the internal thread joint 12 will be screwed into the furnace eye by rotation to dock the internal thread joint 12 with the furnace eye.

[0036] When the internal thread joint 12 is docked with the furnace eye, the rotation of the internal thread joint 12 will be restricted by the resistance at the furnace eye, causing the rotation speeds of the internal thread joint 12 and the connecting pipe 11 to gradually slow down. When the torque sensor 10 senses that the torque change between the rotating pipe 8 and the connecting pipe 11 is greater than the preset value, the torque sensor 10 will send a signal. After receiving the signal, the controller 14 will control the second brushless motor 1502 to drive the third gear 1503 to stop rotating, causing the second gear 1501, the rotating pipe 8, the connecting pipe 11, and the internal thread joint 12 to stop rotating. At the same time, the controller 14 will also control the first brushless motor 402 on the lower side to drive the first gear 403 to stop rotating, causing the lower slider 3, the connecting frame 5, the hollow frame 7, the rotating pipe 8, the torque sensor 10, the connecting pipe 11, and the internal thread joint 12 to stop moving. In this way, the movement and rotation can be automatically stopped after the internal thread joint 12 is docked;After that, start the first air pump 901 to input compressed air into the hollow frame 7 and the rotating pipe 8 through the first air pipe 904, so that the compressed air enters the connecting pipe 11, the internal thread joint 12 and the furnace eye from the rotating pipe 8, thereby gradually increasing the air pressure in the rotating pipe 8, the connecting pipe 11 and the internal thread joint 12. During this period, the air pressure in the connecting pipe 11 is detected by the air pressure sensor 13. When the air pressure in the rotating pipe 8, the connecting pipe 11 and the internal thread joint 12 increases to be able to push open the plugging material in the furnace eye, the compressed air in the rotating pipe 8, the connecting pipe 11 and the internal thread joint 12 will push open the plugging material in the furnace eye. In this way, the opening of the furnace eye can be automatically completed. When the plugging material in the furnace eye is pushed open, the compressed air in the rotating pipe 8, the connecting pipe 11 and the internal thread joint 12 will enter the electric furnace. At this time, the air pressure in the rotating pipe 8, the connecting pipe 11 and the internal thread joint 12 will instantaneously decrease. When the air pressure sensor 13 senses an instantaneous decrease in the air pressure in the connecting pipe 11, the air pressure sensor 13 will send a signal. After receiving the signal, the controller 14 will control the second brushless motor 1502 to drive the third gear 1503 to reverse, so that the third gear 1503 drives the second gear 1501 and the rotating pipe 8 to reverse, thereby driving the rotating pipe 8 to drive the connecting pipe 11 and the internal thread joint 12 to reverse synchronously through the torque sensor 10. At the same time, the controller 14 will control the first brushless motor 402 on the lower side to drive the first gear 403 to reverse and reset, so that the first gear 403 on the lower side rolls leftward on the lower rack 401, thereby driving the lower slider 3, the connecting frame 5, the hollow frame 7, the rotating pipe 8, the torque sensor 10, the connecting pipe 11 and the internal thread joint 12 to move leftward and reset, so that the internal thread joint 12 is screwed out from the thread at the furnace eye. During the leftward movement and reset of the lower slider 3, the lower slider 3 will also drive the winding shaft 902 to move leftward and reset, so that the winding shaft 902 relaxes the first air pipe 904. At this time, the spring 903 returns to its original state, and the spring 903 drives the winding shaft 902 to reverse and reset, so that the winding shaft 902 winds up the first air pipe 904, thereby preventing the first air pipe 904 from being scattered. When the internal thread joint 12 is screwed out from the thread at the furnace eye, there are two cases at this time: If the spring 1504 is not deformed, the lower slider 3 and the connecting frame 5 drive the hollow frame 7, the rotating pipe 8, the torque sensor 10, the connecting pipe 11 and the internal thread joint 12 to move leftward and reset normally;If the spring 1504 is deformed, under the influence of the elastic force of the spring 1504, the spring 1504 will apply a force to pull the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal thread joint 12 to move to the right, so that the right end of the internal thread joint 12 abuts against the furnace eye. Then, as the lower slider 3 and the connecting frame 5 continue to move to the left and reset, the spring 1504 will gradually return to its original state. After the spring 1504 returns to its original state, the lower slider 3 will drive the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal thread joint 12 to move to the left and reset through the spring 1504, causing the internal thread joint 12 to separate from the furnace eye. Then, the first air pump 901 is turned off;

[0037] After that, wait for the ferroalloy liquid in the electric furnace to flow out through the furnace eye. When the ferroalloy liquid in the electric furnace has finished flowing out through the furnace eye and it is necessary to apply a plugging material to block the furnace eye, control the manipulator 1 to drive the guide rail frame 2 and the components thereon to move until the discharge port of the storage cylinder 16 is aligned with the furnace eye and at a certain distance (the discharge port of the storage cylinder 16 is directly to the left of the furnace eye). Then, drive the first gear 403 to rotate through the upper first brushless motor 402, so that the upper first gear 403 rolls to the right on the upper rack 401, thereby driving the upper slider 3 and the storage cylinder 16 to move to the right, making the discharge port of the storage cylinder 16 approach the furnace eye until the discharge port of the storage cylinder 16 enters the furnace eye. Then, start the second air pump 1701 to input compressed air into the storage cylinder 16 through the second air pipe 1702, so that the compressed air in the storage cylinder 16 pushes the piston 1705 to move to the right, so that the piston 1705 pushes the plugging material in the storage cylinder 16 to move to the right, so that the plugging material is discharged into the furnace eye through the discharge port of the storage cylinder 16, and then the plugging material blocks the inside of the furnace eye. In this way, the blocking of the furnace eye can be automatically completed. After the inside of the furnace eye is blocked, turn off the second air pump 1701, and then drive the first gear 403 to reverse and reset through the upper first brushless motor 402, so that the upper first gear 403 rolls to the left on the upper rack 401, thereby driving the upper slider 3 and the storage cylinder 16 to move to the left and reset, so that the discharge port of the storage cylinder 16 leaves the furnace eye; Subsequently, when the plugging material in the storage cylinder 16 is used up, start the second air pump 1701 to extract the air in the storage cylinder 16 through the second air pipe 1702, so that the air pressure on the left side of the piston 1705 is less than the air pressure on the right side, so as to drive the piston 1705 to move to the left and reset by using the air pressure. Then, turn off the second air pump 1701, and repeat the above plugging material feeding operation to replenish the plugging material.

[0038] See Figure 9As shown, it further includes a ceramic fiber gasket 18. The right end of the connecting pipe 11 is connected to the ceramic fiber gasket 18, and the ceramic fiber gasket 18 is located inside the internal thread joint 12. The ceramic fiber gasket 18 is used to seal the internal thread joint 12 and the furnace eye.

[0039] By providing the ceramic fiber gasket 18, after the internal thread joint 12 and the furnace eye are docked, the ceramic fiber gasket 18 can seal between the internal thread joint 12 and the furnace eye, thereby improving the sealing performance between the internal thread joint 12 and the furnace eye and preventing air leakage between the internal thread joint 12 and the furnace eye.

[0040] See Figure 9 As shown, it further includes a cleaning mechanism. The cleaning mechanism includes a servo motor 19, an electric push rod 20, a connecting rod 21, and a wire brush 22. The servo motor 19 is installed at the left end of the rotating pipe 8. The output shaft of the servo motor 19 is connected to the electric push rod 20, and the electric push rod 20 is located inside the rotating pipe 8. The telescopic rod of the electric push rod 20 is connected to the connecting rod 21, and the connecting rod 21 passes through the rotating pipe 8, the torque sensor 10, and the connecting pipe 11. The right end of the connecting rod 21 is connected to the wire brush 22, and the wire brush 22 is located inside the connecting pipe 11. The wire brush 22 is used to clean the inside of the furnace eye.

[0041] When the first brushless motor 402 on the lower side drives the first gear 403 to rotate and the internal thread joint 12 approaches the furnace eye, it can stop when the internal thread joint 12 is about to contact the furnace eye. Then, the servo motor 19 drives the electric push rod 20, the connecting rod 21, and the wire brush 22 to rotate. Then, the electric push rod 20 drives the connecting rod 21 and the wire brush 22 to move to the right, so that the wire brush 22 passes through the internal thread joint 12 and enters the furnace eye, thereby brushing off the slag adhering to the inner wall of the furnace eye (when the ferroalloy liquid flows out of the furnace eye, inevitably, some solid materials, such as uncompletely melted raw materials, oxides, etc. will remain on the inner wall of the furnace eye, and these are the slag). After the slag adhering to the inner wall of the furnace eye is completely brushed off, the electric push rod 20 drives the connecting rod 21 and the wire brush 22 to move to the left to reset. Then, the servo motor 19 drives the electric push rod 20, the connecting rod 21, and the wire brush 22 to stop rotating. Then, the first air pump 901 is started to input compressed air into the hollow frame 7 and the rotating pipe 8 through the first air pipe 904, so that the compressed air enters the connecting pipe 11 and the internal thread joint 12 from the rotating pipe 8, thereby blowing the compressed air through the internal thread joint 12 into the furnace eye, and further blowing out the slag scraped off in the furnace eye. After the slag scraped off in the furnace eye is completely blown out, the first air pump 901 is turned off. In this way, the slag adhering to the inner wall of the furnace eye can be cleaned to prevent blockage in the furnace eye caused by slag adhesion. Then, continue to drive the first gear 403 to rotate by the first brushless motor 402 on the lower side to make the internal thread joint 12 continue to approach the furnace eye.

[0042] See Figures 10-12 As shown, it further includes a cooling mechanism. The cooling mechanism includes a shell-and-tube heat exchanger 23, a refrigerator 24, a water pump 25, a return pipe 26, a water delivery pipe 27, heat dissipation fins 28, a fan 29, and an air outlet pipe 30. The shell-and-tube heat exchanger 23 is arranged on the connecting frame 5, and the inner side of the shell-and-tube heat exchanger 23 contacts the outer wall of the connecting pipe 11. The refrigerator 24 is arranged in the middle of the guide rail frame 2. The water pump 25 is arranged on the front right side of the guide rail frame 2, and the water outlet of the water pump 25 is communicated with the water inlet of the refrigerator 24. The water inlet of the water pump 25 is communicated with the water outlet of the shell-and-tube heat exchanger 23 through the return pipe 26. The water inlet of the shell-and-tube heat exchanger 23 is communicated with the water outlet of the refrigerator 24 through the water delivery pipe 27. Heat dissipation fins 28 are arranged on the top of the refrigerator 24. The fan 29 is installed in the middle on the right side of the guide rail frame 2, and the fan 29 is used to blow air on the heat dissipation fins 28. Air outlet pipes 30 are connected to the front and back sides of the left part on the upper side of the guide rail frame 2.

[0043] In the initial state, the shell-and-tube heat exchanger 23 is filled with a coolant for cooling the connecting pipe 11.

[0044] When in use, the coolant in the shell-and-tube heat exchanger 23 can be used to cool the connecting pipe 11 to prevent the high temperature in the furnace from causing a thermal impact on the connecting pipe 11 through the furnace eye after the connecting pipe 11 is opened at the furnace eye. When the coolant in the shell-and-tube heat exchanger 23 cools the connecting pipe 11, the water pump 25 can also be used to pump the coolant in the shell-and-tube heat exchanger 23 into the refrigerator 24 through the return pipe 26, and then the refrigerator 24 cools the coolant and sends the cooled coolant back into the shell-and-tube heat exchanger 23 through the water delivery pipe 27, so as to reduce the temperature of the coolant in the shell-and-tube heat exchanger 23 and thus improve the refrigeration effect of the coolant. When the refrigerator 24 cools the coolant, the heat dissipation fins 28 can dissipate heat from the refrigerator 24, thereby extending the service life of the refrigerator 24. Then, the fan 29 is used to introduce air flow onto the heat dissipation fins 28, which can make the air flow dissipate heat from the heat dissipation fins 28 and take the hot air out through the air outlet pipe 30.

[0045] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An automatic furnace opening system for an electric furnace for ferroalloy refining, comprising a manipulator (1), characterized in that: The manipulator (1) is connected to a guide rail frame (2), two sliding blocks (3) are slidably arranged on the guide rail frame (2), and a translation mechanism is also arranged on the guide rail frame (2), and the translation mechanism is used to drive the sliding blocks (3) to translate on the guide rail frame (2), one of the sliding blocks is connected to a connecting frame (5) and a guide rod (6), a hollow frame (7) is slidably arranged on the guide rod (6), a rotating tube (8) is rotatably connected in the hollow frame (7), and a gas transmission mechanism is arranged on the guide rail frame (2), and the gas transmission mechanism is used to input compressed gas into the hollow frame (7) and the rotating tube (8), and a torque sensor (10) is slidably arranged on the connecting frame (5), and the input end of the torque sensor (10) is connected to the rotating tube (8), and the output end of the torque sensor (10) is connected to the rotating tube (8). A connecting pipe (11) is provided on the connecting pipe (11) and an internal threaded joint (12) is provided. The internal threaded joint (12) is used for docking with the furnace eye. By sending compressed gas in the rotating tube (8) into the furnace eye, the plugging material at the furnace eye is pushed open. A gas pressure sensor (13) is provided on the connecting pipe (11). A controller (14) is installed on the connecting frame (5). The connecting frame (5) is also provided with a rotating mechanism for driving the rotating tube (8) to rotate. A storage barrel (16) for storing the plugging material is connected to another sliding block. The storage barrel (16) is provided with a feed port and a discharge port. The feed port is provided with a thread. A pushing mechanism is provided on the guide rail frame (2). The pushing mechanism is used to push the plugging material in the storage barrel (16) into the furnace eye. The furnace eye is blocked, the translation mechanism comprises a rack (401), a first brushless motor (402) and a first gear (403), the guide rail frame (2) is symmetrically provided with the rack (401), the sliding block (3) is equipped with the first brushless motor (402), the first brushless motor (402) is connected with the first gear (403), the first gear (403) is meshed with the rack (401), the gas transmission mechanism comprises a first air pump (901), a winding shaft (902), a spring (903) and a first air pipe (904), the first air pump (901) is installed on the side of the guide rail frame (2), the winding shaft (902) is rotatably installed on the sliding block equipped with the connecting frame (5), the winding shaft (902) and the sliding block equipped with the connecting frame (5) are connected to each other. A clockwork spring (903) is arranged between the blocks, a first air pipe (904) is wound around the winding shaft (902), the first air pipe (904) penetrates the winding shaft (902), two ends of the first air pipe (904) are respectively connected to the air outlet of the first air pump (901) and the hollow frame (7), the rotating mechanism comprises a second gear (1501), a second brushless motor (1502), a third gear (1503) and a spring (1504), the second gear (1501) is connected to the rotating tube (8), the second brushless motor (1502) is also installed on the sliding block on which the connecting frame (5) is installed, the second brushless motor (1502) is connected to the third gear (1503), the second gear (1501) is meshed with the third gear (1503),A spring (1504) is provided between the hollow frame (7) and the sliding block on which the connecting frame (5) is installed.

2. The automatic furnace opening system for ferroalloy refining electric furnace according to claim 1 is characterized in that: The pushing mechanism comprises a second air pump (1701), a second air pipe (1702), a plug cover (1703), a nut (1704) and a piston (1705). The second air pump (1701) is also installed on the side of the guide rail frame (2). The air outlet of the second air pump (1701) is connected to the storage barrel (16) through the second air pipe (1702). The plug cover (1703) is provided at the feed port of the storage barrel (16). A nut (1704) is rotatably provided on the plug cover (1703). The nut (1704) cooperates with the thread of the feed port of the storage barrel (16). A piston (1705) is slidably provided in the storage barrel (16). The piston (1705) is used to push the eye-blocking material in the storage barrel (16) toward the discharge port.

3. The automatic furnace opening system for ferroalloy refining electric furnace according to claim 2 is characterized in that: It also includes a ceramic fiber gasket (18), the end of the connecting pipe (11) is connected to the ceramic fiber gasket (18), the ceramic fiber gasket (18) is located on the inner side of the internal thread joint (12), and the ceramic fiber gasket (18) is used to seal the internal thread joint (12) and the furnace eye.

4. The automatic furnace opening system for ferroalloy refining electric furnace according to claim 3 is characterized in that: The invention also comprises a cleaning mechanism, which comprises a servo motor (19), an electric push rod (20), a connecting rod (21) and a wire brush (22). The servo motor (19) is installed at the end of the rotating tube (8). The output shaft of the servo motor (19) is connected to the electric push rod (20). The electric push rod (20) is located on the inner side of the rotating tube (8). The telescopic rod of the electric push rod (20) is connected to the connecting rod (21). The connecting rod (21) passes through the rotating tube (8), the torque sensor (10) and the connecting tube (11). The end of the connecting rod (21) is connected to the wire brush (22). The wire brush (22) is located on the inner side of the connecting tube (11). The wire brush (22) is used to clean the furnace eye.

5. The automatic furnace opening system for ferroalloy refining electric furnace according to claim 4 is characterized in that: The cooling device also includes a cooling mechanism, which includes a casing heat exchanger (23), a refrigerator (24), a water pump (25), a return pipe (26), a water pipe (27), a heat dissipation fin (28), a fan (29) and an air outlet pipe (30). The casing heat exchanger (23) is arranged on the connecting frame (5), and the inner side of the casing heat exchanger (23) is in contact with the outer wall of the connecting pipe (11). The refrigerator (24) and the water pump (25) are installed on the guide rail frame (2), and the water outlet of the water pump (25) is in contact with the cooling pipe (11). The water inlet of the water pump (25) is connected to the water outlet of the shell-and-tube heat exchanger (23) through a return pipe (26); the water inlet of the shell-and-tube heat exchanger (23) is connected to the water outlet of the refrigerator (24) through a water delivery pipe (27); a heat dissipation fin (28) is arranged on the top of the refrigerator (24); a fan (29) is installed on the guide rail frame (2); the fan (29) is used to blow air to the heat dissipation fin (28); and an air outlet pipe (30) is also installed on the guide rail frame (2).

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