A brown corundum electric arc furnace energy-saving short-grid system

Abstract

The present invention provides an energy-saving short-net system for a brown corundum electric arc furnace, comprising an insulating bushing, a follower seat, an extrusion screw rod, a reinforcement extrusion sheet, a shielding limit plate, a limit support plate and a buffer seat, wherein the follower seats are symmetrically arranged on the left and right sides and the front and rear sides inside the reinforcement seat, an extrusion screw rod is arranged at the middle position inside the follower seat, and a reinforcement extrusion sheet is arranged on the right end face of the extrusion screw rod, the design solves the problem of poor connection stability between the original electric arc furnace and the electrode arm, a stable support seat is welded at the bottom of the electric arc furnace body, a shielding limit plate is welded on the lower side of the left end face of the stable support seat, the left side of the lower end face of the shielding limit plate is fitted with the limit support plate, and the middle position of the lower end face of the limit support plate is connected with the buffer seat, the design solves the problem that the original electric arc furnace is prone to impact during the return process, and compared with the prior art, the present invention has a reasonable structure, so that the connection between the electrode and the electric arc furnace is more stable and has high reliability.

Description

Technical Field

[0001] The invention discloses a brown corundum electric arc furnace energy-saving short-grid system, belonging to the technical field of electric arc furnace short-grids. Background Art

[0002] Brown corundum, also known as corundum, is a brown artificial corundum made by melting and reducing alumina, carbon material and iron filings in an electric arc furnace.

[0003] In the prior art, the connection stability of the existing brown corundum arc furnace electrode device is poor, resulting in high heat generation and short-circuit impedance of the electrode device, thereby consuming additional power and having poor economic benefits in long-term use. In addition, the existing arc furnace bottom support structure is single, and it is easy to produce large-scale resonance when the arc furnace swings back to its original position. Now, there is an urgent need for an energy-saving short-circuit system for brown corundum arc furnace to solve the above problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a brown corundum electric arc furnace energy-saving short-grid system to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a brown corundum electric arc furnace energy-saving short-grid system, including an arc furnace body, a reinforcement mechanism, an electrode arm, a water-cooled cable, an energy-saving transformer, a support base and a support assembly, a support assembly is arranged at the bottom of the arc furnace body, a reinforcement mechanism is arranged on the upper end surface of the arc furnace body, the electrode arm is fixed on the upper side of the inner part of the arc furnace body through the reinforcement mechanism, a support base is arranged on the left side of the arc furnace body, an energy-saving transformer is installed on the upper end surface of the support base, a water-cooled cable is connected between the energy-saving transformer and the electrode arm, the reinforcement mechanism includes an outer casing, an insulating bushing, a reinforcement seat, an adjusting screw rod, a follower seat, an extrusion screw rod, a limit slider and a reinforcement extrusion sheet, and the support assembly includes a stabilizing support seat, a shielding limit plate, a limit support plate, a buffer seat, a stabilizing support column, an electric hydraulic push rod, a first support seat, a second support seat and a reinforcement support column.

[0006] Furthermore, in the reinforcement mechanism, an outer casing is welded to the upper end face of the arc furnace body, an insulating bushing is installed on the inner annular side face of the outer casing, a reinforcement seat is installed on the upper end face of the outer casing, follower seats are symmetrically arranged on the left and right sides and the front and rear sides inside the reinforcement seat, limiting sliders are symmetrically arranged on the front and rear end faces of the follower seat, an adjusting screw is connected to the upper end face of the follower seat, an extrusion screw is arranged in the middle position inside the follower seat, and a reinforcement extrusion plate is arranged on the right end face of the extrusion screw.

[0007] Furthermore, the reinforcement seat is installed in three groups, and the three groups of reinforcement seats have the same specifications. The upper end surface of the reinforcement seat is symmetrically provided with vertical internal threaded through holes on the left and right sides and the front and back sides, and the vertical internal threaded through holes are meshed with the adjusting screw. The inner left and right sides and the front and back sides of the reinforcement seat are symmetrically provided with limiting grooves, and the limiting grooves match the limiting sliders. The limiting sliders are provided in multiple groups, and the specifications of the multiple groups of limiting sliders are the same. The lower end surface of the reinforcement seat is provided with an internal threaded cavity, the upper side of the annular side surface of the outer casing is provided with an external thread, and the external thread is meshed with the internal threaded cavity. The outer casing is welded in three groups. The insulating bushings are installed in three groups, and the three groups of insulating bushings have the same specifications. The inner diameter of the insulating bushing is the same as the diameter of the electrode arm.

[0008] Furthermore, the follower seats are provided in multiple groups, and the specifications of the multiple groups of follower seats are the same. An internal threaded through cavity is opened in the middle position inside the follower seat, and the internal threaded through cavity is meshed with the extrusion screw rod. The upper end surfaces of the multiple groups of follower seats are all installed with blocking rings. The extrusion screw rods are provided in multiple groups, and the specifications of the multiple extrusion screw rods are the same. A first turntable is welded on the left end surface of the extrusion screw rod, and multiple first turntables are welded. Multiple adjusting screw rods are connected, and the specifications of the multiple adjusting screw rods are the same. The lower end surfaces of the multiple adjusting screw rods are provided with connecting round blocks, and the upper end surfaces of the multiple adjusting screw rods are welded with second turntables.

[0009] Furthermore, a plurality of the reinforcing extruded sheets are provided, and the plurality of reinforcing extruded sheets have the same specifications, the reinforcing extruded sheets and the insulating bushing are both made of high-frequency insulating ceramics, and the reinforcing seat and the outer casing are both made of chromium-zirconium-copper.

[0010] Furthermore, in the support assembly, a stabilizing support seat is welded to the bottom of the arc furnace body, a first support seat is installed on the left side of the lower end surface of the stabilizing support seat, an electric hydraulic push rod is hinged on the lower side of the first support seat, a second support seat is installed on the right side of the lower end surface of the stabilizing support seat, a reinforcing support column is hinged on the lower side of the second support seat, a shielding limit plate is welded on the lower side of the left end surface of the stabilizing support seat, the left side of the lower end surface of the shielding limit plate is fitted with the limiting support plate, a buffer seat is connected to the middle position of the lower end surface of the limiting support plate, and a stabilizing support column is installed on the left side of the stabilizing support seat.

[0011] Furthermore, the left and right end surfaces of the buffer seat are symmetrically provided with follower plates, the lower end surfaces of the follower plates are clamped with compression springs, two groups of follower plates are provided, and the two groups of follower plates have the same specifications, two groups of compression springs are clamped, and the two groups of compression springs have the same specifications, and the upper end surface of the buffer seat is connected to the lower end surface of the limiting support plate by welding.

[0012] Furthermore, a buffer cavity is provided on the upper end surface of the stabilizing support column, and limiting slide grooves are symmetrically provided on the left and right sides of the inner wall of the buffer cavity, and the limiting slide grooves match the follower plate. A hinged support seat is installed at the bottom of the electric hydraulic push rod, and two groups of second support seats are installed, and the two groups of second support seats have the same specifications. Two reinforcement support columns are hinged, and the two reinforcement support columns have the same specifications. Reinforcement plates are symmetrically welded on the upper and lower sides of the right end surface of the shielding limit plate.

[0013] Furthermore, three water-cooling cables are connected, three groups of electrode arms are provided, a furnace door is provided on the left end surface of the electric arc furnace body, and a steel outlet door is provided on the right end surface of the electric arc furnace body.

[0014] Beneficial effects of the present invention: The brown corundum electric arc furnace energy-saving short-net system of the present invention adds a reinforcement seat, an adjustment screw rod, a follower seat, an extrusion screw rod and a reinforcement extrusion sheet. This design facilitates the stable clamping and positioning of the electrode arm, avoids the electrode arm from easily loosening and displacing during use, solves the problem of poor connection stability between the original arc furnace and the electrode arm, and improves the stability of use of the present invention.

[0015] Because the present invention adds a supporting assembly including a stabilizing support seat, a shielding limit plate, a limit support plate, a buffer seat and a stabilizing support column, this design is convenient for supporting and swinging the electric arc furnace, and has a certain buffering property during the return process of the electric arc furnace, thereby solving the problem that the original electric arc furnace is prone to impact during the return process and improving the support property of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a structural schematic diagram of a brown corundum electric arc furnace energy-saving short-grid system of the present invention;

[0018] Figure 2 It is a front cross-sectional view of a reinforcement mechanism in a brown corundum electric arc furnace energy-saving short-grid system of the present invention;

[0019] Figure 3 It is a front cross-sectional view of a support component in a brown corundum electric arc furnace energy-saving short-net system of the present invention;

[0020] Figure 4 It is a top view cross-sectional view of a reinforcement mechanism in a brown corundum electric arc furnace energy-saving short-grid system of the present invention;

[0021] Figure 5 for Figure 2 A magnified view of middle;

[0022] Figure 6 for Figure 3Enlarged view of middle B;

[0023] In the figure: 1-arc furnace body, 2-reinforcement mechanism, 21-outer casing, 22-insulating bushing, 23-reinforcement seat, 231-limiting groove, 24-adjusting screw, 241-connecting round block, 25-follow-up seat, 251-blocking ring, 26-extrusion screw, 27-limiting slider, 28-reinforcement extrusion plate, 3-electrode arm, 4-water-cooled cable, 5-energy-saving transformer, 6-support base, 7-support assembly, 71-stable support seat, 72-shielding limit plate, 721-reinforcement plate, 73-limiting support plate, 74-buffer seat, 741-follow-up plate, 7411-compression spring, 75-stable support column, 76-electric hydraulic push rod, 761-hinged support seat, 77-first support seat, 78-second support seat, 79-reinforcement support column. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] See also Figure 1-Figure 6 The present invention provides a technical solution: a brown corundum electric arc furnace energy-saving short-circuit system, comprising an arc furnace body 1, a reinforcement mechanism 2, an electrode arm 3, a water-cooled cable 4, an energy-saving transformer 5, a support base 6 and a support assembly 7. The support assembly 7 is arranged at the bottom of the arc furnace body 1, the reinforcement mechanism 2 is arranged on the upper end surface of the arc furnace body 1, the electrode arm 3 is inserted and fixed on the upper side of the interior of the arc furnace body 1 through the reinforcement mechanism 2, the support base 6 is arranged on the left side of the arc furnace body 1, and the energy-saving transformer is installed on the upper end surface of the support base 6. The energy-saving transformer 5 is provided with a water-cooling cable 4 connected between the electrode arm 3 and the energy-saving transformer 5. The reinforcement mechanism 2 includes an outer casing 21, an insulating bushing 22, a reinforcement seat 23, an adjusting screw 24, a follower seat 25, an extrusion screw 26, a limiting slider 27 and a reinforcing extrusion sheet 28. The support assembly 7 includes a stabilizing support seat 71, a shielding limiting plate 72, a limiting support plate 73, a buffer seat 74, a stabilizing support column 75, an electric hydraulic push rod 76, a first support seat 77, a second support seat 78 and a reinforcing support column 79.

[0026] In the reinforcement mechanism 2, an outer casing 21 is welded to the upper end face of the arc furnace body 1, an insulating bushing 22 is installed on the inner annular side of the outer casing 21, a reinforcement seat 23 is installed on the upper end face of the outer casing 21, and follower seats 25 are symmetrically arranged on the left and right sides and the front and back sides of the reinforcement seat 23. Limiting sliders 27 are symmetrically arranged on the front and rear end faces of the follower seat 25. An adjusting screw 24 is connected to the upper end face of the follower seat 25, an extrusion screw 26 is arranged in the middle position inside the follower seat 25, and a reinforcement extrusion sheet 28 is arranged on the right end face of the extrusion screw 26.

[0027] Three groups of reinforcement seats 23 are installed, and the specifications of the three groups of reinforcement seats 23 are the same. Vertical internal threaded through holes are symmetrically opened on the left and right sides and the front and back sides of the upper end surface of the reinforcement seat 23, and the vertical internal threaded through holes are meshed with the adjusting screw 24. The left and right sides and the front and back sides of the reinforcement seat 23 are symmetrically opened with limiting grooves 231, and the limiting grooves 231 match the limiting slider 27. The limiting slider 27 is provided with multiple groups, and the specifications of the multiple groups of limiting sliders 27 are the same. The lower end surface of the reinforcement seat 23 is opened with an internal thread cavity, and the upper side of the annular side surface of the outer casing 21 is provided with an external thread, and the external thread is meshed with the internal thread cavity. The outer casing 21 is welded in three groups, and three groups of insulating bushings 22 are installed, and the three groups of insulating bushings 22 have the same specifications. The inner diameter of the insulating bushing 22 is the same as the diameter of the electrode arm 3. The vertical internal threaded through hole enables the adjusting screw 24 to have the ability to move up and down, so as to fine-tune the height of the follower seat 25. The matching limiting groove 231 and the limiting slider 27 prevent the follower seat 25 from being displaced or shaken during use. The meshing external thread and internal thread cavity facilitate the installation and fixing of the reinforcement seat 23 on the upper end surface of the outer casing 21, and the three groups of outer casings 21 and the insulating bushings 22 facilitate the limiting protection of the three groups of electrode arms 3.

[0028] There are multiple groups of follower seats 25, and the specifications of the multiple groups of follower seats 25 are the same. An internal threaded cavity is opened in the middle position inside the follower seat 25, and the internal threaded cavity is meshed with the extrusion screw rod 26. The upper end faces of the multiple groups of follower seats 25 are all installed with blocking rings 251. There are multiple extrusion screw rods 26, and the specifications of the multiple extrusion screw rods 26 are the same. The left end face of the extrusion screw rod 26 is welded with a first turntable, and the first turntable is welded with multiple. There are multiple adjusting screw rods 24 connected, and the specifications of the multiple adjusting screw rods 24 are the same. The lower end faces of the multiple adjusting screw rods 24 are all provided with connecting round blocks 241, and the upper end faces of the multiple adjusting screw rods 24 are all welded with second turntables. The internal threaded cavity facilitates the extrusion screw rod 26 to engage in the inner side of the follower seat 25 to move left and right. The blocking ring 251 prevents the connecting round block 241 from loosening or slipping during use. The first turntable facilitates the staff to adjust the extrusion screw rod 26 Rotate, the connecting round block 241 facilitates the adjustment screw 24 to drive the follower seat 25 to move up and down together, so as to fine-tune the use height of the extrusion screw 26, and the second turntable facilitates the staff to rotate the adjustment screw 24. There are multiple reinforcement extrusion sheets 28, and the multiple reinforcement extrusion sheets 28 have the same specifications. The reinforcement extrusion sheets 28 and the insulating bushing 22 are both made of high-frequency insulating ceramics, and the reinforcement seat 23 and the outer casing 21 are both made of chromium-zirconium-copper. Multiple reinforcement extrusion sheets 28 made of high-frequency insulating ceramics are not only convenient for clamping and positioning the three groups of electrode arms 3, but also have small dielectric constant, low dielectric loss and high mechanical strength. The insulating bushing 22 made of high-frequency insulating ceramics is the inner wall of the outer casing 21 with high dielectric strength, insulation resistance and thermal conductivity, while the reinforcement seat 23 and the outer casing 21 made of chromium-zirconium-copper have high strength and hardness, electrical conductivity, thermal conductivity and wear resistance.

[0029] In the support assembly 7, a stabilizing support seat 71 is welded to the bottom of the arc furnace body 1, a first support seat 77 is installed on the left side of the lower end face of the stabilizing support seat 71, an electric hydraulic push rod 76 is hinged on the lower side of the first support seat 77, a second support seat 78 is installed on the right side of the lower end face of the stabilizing support seat 71, a reinforcing support column 79 is hinged on the lower side of the second support seat 78, a shielding limit plate 72 is welded on the lower side of the left end face of the stabilizing support seat 71, a limit support plate 73 is fitted on the left side of the lower end face of the shielding limit plate 72, a buffer seat 74 is connected to the middle position of the lower end face of the limit support plate 73, and a stabilizing support column 75 is installed on the left side of the stabilizing support seat 71.

[0030] As an embodiment of the present invention, the left and right end surfaces of the buffer seat 74 are symmetrically provided with follower plates 741, and the lower end surface of the follower plate 741 is clamped with a compression spring 7411, and two groups of follower plates 741 are provided, and the two groups of follower plates 741 have the same specifications, and two groups of compression springs 7411 are clamped with two groups, and the two groups of compression springs 7411 have the same specifications, and the upper end surface of the buffer seat 74 is connected to the lower end surface of the limit support plate 73 by welding. The follower plate 741 and the compression spring 7411 are convenient for buffering and offsetting the impact force received by most of the buffer seat 74, and the upper end surface of the stabilizing support column 75 is provided with a buffer cavity, and the inner wall of the buffer cavity is symmetrically provided with limit sliding grooves on the left and right sides. The positioning slide is matched with the follower plate 741, and a hinged support seat 761 is installed at the bottom of the electric hydraulic push rod 76. Two groups of second support seats 78 are installed, and the two groups of second support seats 78 have the same specifications. There are two hinged reinforcement columns 79, and the two reinforcement columns 79 have the same specifications. Reinforcement plates 721 are symmetrically welded on the upper and lower sides of the right end surface of the shielding limit plate 72. The buffer cavity and the limiting slide are convenient for the buffer seat 74 and the follower plate 741 to perform up and down buffering actions inside the stabilizing column 75. The hinged support seat 761 enables the electric hydraulic push rod 76 to have the ability to swing left and right, and the two reinforcement columns 79 and the two groups of second support seats 78 make the swing stability of the arc furnace body 1 better.

[0031] Three water-cooling cables 4 are connected, three groups of electrode arms 3 are arranged, a furnace door is arranged on the left end face of the arc furnace body 1, and a steel-outlet door is arranged on the right end face of the arc furnace body 1. The three water-cooling cables 4 facilitate the electrical connection between the three groups of electrode arms 3 and the energy-saving transformer 5. The furnace door facilitates pouring brown corundum raw materials into the arc furnace body 1, and the steel-outlet door facilitates pouring out the smelted brown corundum raw materials.

[0032] As an embodiment of the present invention: during the use of the arc furnace body 1, the multiple extruded screw rods 26 will clamp and fix the three groups of electrode arms 3 through the multiple groups of reinforced extruded sheets 28 to prevent the three groups of electrode arms 3 from easily moving up and down or loosening during use, and the three groups of outer sheaths 21 and insulating bushings 22 will protect the connection between the three groups of electrode arms 3 and the arc furnace body 1, and at the same time, the three groups of outer sheaths 21 will support and position the three groups of reinforced seats 23, so that the three groups of reinforced seats 23 can support and position the multiple extruded screw rods 26; when it is necessary to fine-tune the height of the extruded screw rods 26, the staff first respectively adjusts the height of the multiple extruded screw rods 26, and the three groups of outer sheaths 21 and insulating bushings 22 will protect the connection between the three groups of electrode arms 3 and the arc furnace body 1. The pressing screw 26 rotates counterclockwise, so that the multiple extrusion screws 26 drive the multiple groups of reinforcement extrusion sheets 28 to move outward, so that the multiple groups of reinforcement extrusion sheets 28 are separated from the three groups of electrode arms 3, and then the multiple adjustment screws 24 can be rotated equidistantly clockwise. At this time, the multiple groups of follower seats 25 will move downward, and the multiple extrusion screws 26 will drive the multiple groups of reinforcement extrusion sheets 28 to move downward together. Similarly, when the multiple adjustment screws 24 are rotated equidistantly counterclockwise, the multiple extrusion screws 26 will drive the multiple groups of reinforcement extrusion sheets 28 to move upward together, so as to adjust the use height of the multiple groups of reinforcement extrusion sheets 28.

[0033] As an embodiment of the present invention: during the use of the arc furnace body 1, the two groups of reinforcing support columns 79 and the second support seat 78 will support the right side of the lower end surface of the stabilizing support seat 71, and the stabilizing support column 75 will support the buffer seat 74, so that the buffer seat 74 supports the limiting support plate 73, and the limiting support plate 73 will support the shielding limiting plate 72, so that the shielding limiting plate 72 supports the stabilizing support seat 71, thereby making the stabilizing support seat 71 mechanically and stably support the arc furnace body 1; when the arc furnace body 1 needs to be mechanically swung and unloaded, the staff only needs to control the electric hydraulic push rod 76 to extend, so that the first support seat 77 can apply a lifting force to the stabilizing support seat 71, and the stabilizing support seat 71 will drive the arc The furnace body 1 makes a clockwise swinging motion so that the arc furnace body 1 can perform the unloading motion; when the unloading is completed, the staff controls the electric hydraulic push rod 76 to perform the contraction motion, and at this time the stabilizing support seat 71 will drive the arc furnace body 1 to make a counterclockwise swinging motion so that the arc furnace body 1 can return to its original position, and when the arc furnace body 1 swings to its original position, the shielding limit plate 72 will exert an impact force on the limit support plate 73 to contact, and the limit support plate 73 will directly transmit the impact force to the buffer seat 74, and at this time the buffer seat 74 will move downward, and at the same time the follower plate 741 will exert downward pressure on the compression spring 7411, so that the compression spring 7411 can contract and buffer and offset most of the impact force transmitted, thereby avoiding a large resonance when the arc furnace body 1 returns to its original position.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A brown corundum electric arc furnace energy-saving short-grid system, comprising an electric arc furnace body, a reinforcement mechanism, an electrode arm, a water-cooled cable, an energy-saving transformer, a support base and a support assembly, Features: A support assembly is provided at the bottom of the arc furnace body, a reinforcement mechanism is provided on the upper end surface of the arc furnace body, the electrode arm is fixed on the upper side of the inner part of the arc furnace body through the reinforcement mechanism, a support base is provided on the left side of the arc furnace body, an energy-saving transformer is installed on the upper end surface of the support base, a water-cooling cable is connected between the energy-saving transformer and the electrode arm, the reinforcement mechanism includes an outer casing, an insulating bushing, a reinforcement seat, an adjustment screw rod, a follower seat, an extrusion screw rod, a limit slider and a reinforcement extrusion sheet, and the support assembly includes a stabilizing support seat, a shielding limit plate, a limit support plate, a buffer seat, a stabilizing support column, an electric hydraulic push rod, a first support seat, a second support seat and a reinforcement support column; In the reinforcement mechanism, an outer casing is welded on the upper end face of the arc furnace body, an insulating bushing is installed on the inner annular side face of the outer casing, a reinforcement seat is installed on the upper end face of the outer casing, and follower seats are symmetrically arranged on the left and right sides and the front and rear sides of the reinforcement seat, and limit sliders are symmetrically arranged on the front and rear end faces of the follower seat, an adjusting screw is connected to the upper end face of the follower seat, an extrusion screw is arranged at the middle position inside the follower seat, and a reinforcement extrusion sheet is arranged on the right end face of the extrusion screw; The following seats are provided in multiple groups, and the specifications of the following seats are the same. An internal thread cavity is opened in the middle position of the following seats, and the internal thread cavity is meshed with the extrusion screw rod. The upper end faces of the following seats in multiple groups are all installed with blocking rings. The extrusion screw rods are provided in multiple groups, and the specifications of the extrusion screw rods are the same. The left end face of the extrusion screw rod is welded with a first turntable, and the first turntable is welded with multiple groups. The adjusting screw rods are connected in multiple groups, and the specifications of the adjusting screw rods are the same. The lower end faces of the multiple adjusting screw rods are all provided with connecting round blocks, and the upper end faces of the multiple adjusting screw rods are all welded with second turntables; In the support assembly, a stable support seat is welded at the bottom of the arc furnace body, a first support seat is installed on the left side of the lower end surface of the stable support seat, an electric hydraulic push rod is hinged on the lower side of the first support seat, a second support seat is installed on the right side of the lower end surface of the stable support seat, a reinforcing support column is hinged on the lower side of the second support seat, a shielding limit plate is welded on the lower side of the left end surface of the stable support seat, the left side of the lower end surface of the shielding limit plate is attached to the limit support plate, a buffer seat is connected to the middle position of the lower end surface of the limit support plate, and a stabilizing support column is installed on the left side of the stable support seat; The left and right end surfaces of the buffer seat are symmetrically provided with follower plates, and the lower end surface of the follower plate is clamped with a compression spring. There are two groups of follower plates, and the two groups of follower plates have the same specifications. There are two groups of compression springs, and the two groups of compression springs have the same specifications. The upper end surface of the buffer seat is connected to the lower end surface of the limit support plate by welding.

2. A brown corundum electric arc furnace energy-saving short-grid system according to claim 1, Features: The reinforcement seat is installed in three groups, and the specifications of the three groups of reinforcement seats are the same. Vertical internal threaded through holes are symmetrically opened on the left and right sides and the front and back sides of the upper end surface of the reinforcement seat, and the vertical internal threaded through holes are meshed with the adjusting screw. Limiting grooves are symmetrically opened on the left and right sides and the front and back sides inside the reinforcement seat, and the limiting grooves match the limiting sliders. The limiting sliders are provided in multiple groups, and the specifications of the multiple groups of limiting sliders are the same. An internal threaded cavity is opened on the lower end surface of the reinforcement seat, and an external thread is provided on the upper side of the annular side surface of the outer casing, and the external thread is meshed with the internal threaded cavity. The outer casing is welded in three groups. Three groups of insulating bushings are installed, and the specifications of the three groups of insulating bushings are the same. The inner diameter of the insulating bushing is the same as the diameter of the electrode arm.

3. A brown corundum electric arc furnace energy-saving short-grid system according to claim 1, Features: The reinforcement extrusion sheets are provided in plurality, and the plurality of reinforcement extrusion sheets have the same specifications. The reinforcement extrusion sheets and the insulating bushing are both made of high-frequency insulating ceramics, and the reinforcement seat and the outer casing are both made of chromium-zirconium-copper.

4. A brown corundum electric arc furnace energy-saving short-grid system according to claim 1, Features: A buffer cavity is provided on the upper end surface of the stabilizing support column, and limiting sliding grooves are symmetrically provided on the left and right sides of the inner wall of the buffer cavity. A hinged support seat is installed at the bottom of the electric hydraulic push rod. Two groups of second support seats are installed, and the two groups of second support seats have the same specifications. Two reinforcement support columns are hinged, and the two reinforcement support columns have the same specifications. Reinforcement plates are symmetrically welded on the upper and lower sides of the right end surface of the shielding limit plate.

5. A brown corundum electric arc furnace energy-saving short-grid system according to claim 1, Features: The water-cooling cables are connected in three pieces, the electrode arms are provided in three groups, a furnace door is provided on the left end surface of the electric arc furnace body, and a steel outlet door is provided on the right end surface of the electric arc furnace body.

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