Electrode lifting mechanism of electric arc furnace

Abstract

The utility model discloses an electrode lifting mechanism of an electric arc furnace, which comprises a base, the upper portion of the base is fixedly connected with the electric arc furnace, the electrode lifting mechanism further comprises a supporting frame, the supporting frame comprises supporting columns and a supporting plate, two rows of supporting rods are arranged, each row comprises a plurality of supporting rods, the supporting rods are fixedly connected with the base and respectively located on two sides of the electric arc furnace, and the supporting plate is fixedly connected with the end portions of the supporting columns. The supporting plate is located on the upper portion of the electric arc furnace and provided with three circular through holes, an electrode is inserted into each through hole in a penetrating mode, the electrodes are led into the electric arc furnace, pulleys are arranged on the periphery of each circular through hole and fixedly connected with the surface of the mounting plate, connecting sleeves are fixedly connected to the outer sides of the electrodes, and the outer walls of the connecting sleeves make contact with the pulleys. Two first oil cylinders are arranged on the two sides of each electrode, the first oil cylinders are fixedly connected with the bottom of the supporting plate, and output shafts of the first oil cylinders penetrate through the supporting plate and are fixedly connected with the connecting sleeves of the electrodes. The lifting mechanism is arranged above the electric arc furnace, so that the space is saved, and the influence on construction is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal resource recycling, in particular to an electrode lifter for an electric arc furnace. Background Art

[0002] An electric arc furnace is mainly used for reducing and smelting raw materials such as ores, carbonaceous reducing agents and solvents. It is mainly used for producing ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicomanganese alloy, etc., and is an important industrial equipment in the metallurgical industry and mechanical equipment such as calcium carbide. Its working characteristics are that it uses carbonaceous or magnesia refractory materials as the furnace lining and uses self-baking electrodes. The electrodes are inserted into the furnace charge for submerged arc operation, and the energy of the electric arc and the current passing through the furnace charge generate energy due to the resistance of the furnace charge to melt the metal. The materials are continuously added, the slag and iron are discharged intermittently, and it is an industrial electric furnace with continuous operation.

[0003] According to the different amounts of furnace charge in the furnace, it is necessary to change the height of the electrodes so that the depth of the electrodes inserted into the furnace charge is appropriate. Therefore, a lifting mechanism is required. Generally, the lifting mechanism is installed separately on the ground on the side of the electric arc furnace, occupying space and also having a certain impact on the transportation of materials. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electrode lifting mechanism for an electric arc furnace, which has the advantage of reducing the floor area occupied by the electrode lifting mechanism.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] It includes a base, an electric arc furnace is fixedly connected to the upper part of the base, and further includes a support frame. The support frame includes support columns and a support plate. There are two rows of support columns, each row having multiple support columns, which are fixedly connected to the base and are located on both sides of the electric arc furnace and are parallel to each other. The support plate is fixedly connected to the ends of the support columns, and the support plate is located above the electric arc furnace. The support plate is provided with three circular through holes, and each through hole is penetrated by an electrode. A copper bushing is attached to the outer wall of the electrode. A connecting sleeve is sleeved outside the electrode. The connecting sleeve is provided with a fixing mechanism, and the fixing mechanism is used to connect the copper bushing, the connecting sleeve and the electrode. Through the fixing mechanism, the electrode is connected to the inside of the electric arc furnace, and pulleys are arranged around each circular through hole. The pulleys are fixedly connected to the surface of the mounting plate. The outer wall of the connecting sleeve contacts the pulleys. Two hydraulic cylinders I are arranged on both sides of each electrode. The hydraulic cylinders I are fixedly connected to the bottom of the support plate. The output shafts of the hydraulic cylinders I penetrate the support plate, and the output shafts of every two hydraulic cylinders I are fixedly connected to the connecting sleeve of the same electrode.

[0007] With the above technical solution, according to different amounts of furnace charge, the first oil cylinder drives the connecting sleeve and the electrode to rise and fall, adjusting the depth of the electrode in the furnace charge, thereby providing sufficient energy to the furnace charge. The connecting sleeve is restricted by the pulley during rising and falling, moving more stably. At the same time, the movement of the connecting sleeve drives the rotation of the roller, reducing the friction force on the connecting sleeve, and installing the lifting mechanism above the arc furnace saves space and reduces the impact on construction.

[0008] Preferably, the fixing mechanism includes a pressure ring. The inner wall of the pressure ring is fixedly connected with a second oil cylinder. The pressure ring is located at the end of the connecting sleeve. A connecting rod is hinged between the pressure ring and the connecting sleeve. The pressure ring is sleeved on the electrode, and the copper bushing is located between the electrode and the pressure ring.

[0009] With the above technical solution, the second oil cylinder of the pressure ring pushes the copper bushing to press against the outer wall of the electrode, thereby fixing the copper bushing and the electrode, and at the same time fixing the connecting sleeve and the electrode.

[0010] Preferably, a clamping strip is fixedly connected to the outer wall of the connecting sleeve. A clamping groove is formed in the middle of the roller of the pulley, and the clamping strip is embedded in the clamping groove and is slidably connected with the roller.

[0011] With the above technical solution, the connecting sleeve is restricted by the clamping groove of the roller, further increasing the stability of its movement.

[0012] Preferably, a connecting rod is fixedly connected between two opposite support columns in two rows.

[0013] With the above technical solution, the stability of the connecting frame is increased. Description of the Drawings

[0014] Figure 1 It is a side schematic view of the embodiment;

[0015] Figure 2 It is a side schematic view of the embodiment;

[0016] Figure 3 It is an enlarged schematic view of part A;

[0017] Figure 4 It is a schematic view of the internal structure of the pressure ring.

[0018] Reference Signs: 1, base; 2, arc furnace; 3, support column; 4, support plate; 5, electrode; 6, pulley; 7, connecting sleeve; 8, copper bushing; 9, first oil cylinder; 10, pressure ring; 11, second oil cylinder; 12, connecting rod; 13, clamping strip; 14, connecting rod. Detailed Embodiment

[0019] The following is only the preferred embodiment of the present utility model, and the protection scope is not limited to this embodiment. All technical solutions falling within the concept of the present utility model shall belong to the protection scope of the present utility model. At the same time, it should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

[0020] Referring to Figure 1 、 Figure 2 and Figure 4 , an electrode lifting mechanism of an electric arc furnace 2 includes a base 1. An electric arc furnace 2 is fixedly connected to the upper part of the base 1. The support frame includes support columns 3 and a support plate 4. There are two rows of support columns 3, which are parallel to each other. The base 1 is fixedly connected with two rows of support columns 3, and each row has multiple support columns 3, which are respectively located on both sides of the electric arc furnace 2 and are parallel to each other. A connecting rod 14 is fixedly connected between two opposite support columns 3 of the two rows. The end of the support column 3 is fixedly connected with a support plate 4, and the support plate 4 is located above the electric arc furnace 2. Three circular through holes are opened on the support plate 4, and each through hole is penetrated by an electrode 5. A copper bushing 8 is attached to the outer wall of the electrode 5, and the electrode 5 penetrates into the electric arc furnace 2.

[0021] Referring to Figure 1 -- Figure 4 , a connecting sleeve 7 is sleeved outside the electrode 5. A pressure ring 10 is arranged at the lower end of the connecting sleeve 7. A connecting rod 12 is hinged between the pressure ring 10 and the connecting sleeve 7. An oil cylinder two 11 is fixedly connected to the inner wall of the pressure ring 10. The pressure ring 10 is sleeved on the electrode 5. The copper bushing 8 is located between the electrode 5 and the pressure ring 10. The oil cylinder two 11 of the pressure ring 10 pushes the copper bushing 8 to tightly press against the inner wall of the electrode 5, so that the copper bushing 8, the connecting sleeve 7 and the electrode 5 are fixed. A clamping strip 13 is fixedly connected to the outer wall of the connecting sleeve 7.

[0022] Referring to Figure 1 、 Figure 3 , pulleys 6 are arranged around each circular through hole. The pulleys 6 are fixedly connected to the surface of the mounting plate. A clamping groove is opened in the middle of the roller of the pulley 6. The clamping strip 13 of the connecting sleeve 7 is embedded in the clamping groove and is slidably connected with the roller. Two oil cylinders one 9 are arranged on both sides of each electrode 5. The oil cylinders one 9 are fixedly connected to the bottom of the support plate 4. The output shaft of the oil cylinder one 9 penetrates through the support plate 4, and the output shafts of every two oil cylinders one 9 are fixedly connected to the connecting sleeve 7 of the same electrode 5.

[0023] Working principle: According to different amounts of furnace charge, the first oil cylinder 9 drives the connecting sleeve 7 and the electrode 5 to rise and fall, adjusting the depth of the electrode 5 in the furnace charge, so as to provide sufficient energy for the furnace charge. The connecting sleeve 7 is restricted by the pulley 6 during rising and falling, and moves more stably. At the same time, the movement of the connecting sleeve 7 drives the rotation of the roller, reducing the friction force on the connecting sleeve 7. At the same time, the lifting mechanism is installed above the electric arc furnace 2, saving space and reducing the impact on construction.

Claims

1. An electrode lifting mechanism for an electric arc furnace, comprising a base (1), an electric arc furnace (2) being fixedly connected to the upper part of the base (1), characterized in that: The invention also comprises a support frame, wherein the support frame comprises support columns (3) and support plates (4), wherein the support columns (3) have two rows, each row having a plurality of columns, and are fixedly connected to the base (1), and are respectively located on both sides of the electric arc furnace (2) and are parallel to each other, wherein the support plates (4) are fixedly connected to the ends of the support columns (3), and the support plates (4) are located on the upper part of the electric arc furnace (2), and the support plates (4) are provided with three circular through holes, wherein each through hole is penetrated by an electrode (5), and the outer wall of the electrode (5) is affixed with a copper tile (8), and the outer side of the electrode (5) is covered with a connecting sleeve (7), and the connecting sleeve (7) is provided with a fixing mechanism, and the fixing mechanism is used to The copper tile (8) and the connecting sleeve (7) are connected to the electrode (5) through a fixing mechanism, and the electrode (5) is passed into the interior of the electric arc furnace (2). A pulley (6) is arranged around each circular through hole, and the pulley (6) is fixedly connected to the surface of the mounting plate. The outer wall of the connecting sleeve (7) contacts the pulley (6). Two oil cylinders (9) are arranged on both sides of each electrode (5). The oil cylinder (9) is fixedly connected to the bottom of the support plate (4). The output shaft of the oil cylinder (9) passes through the support plate (4), and the output shafts of every two oil cylinders (9) are fixedly connected to the connecting sleeve (7) of the same electrode (5).

2. The electrode lifting mechanism of an electric arc furnace according to claim 1, characterized in that: The fixing mechanism comprises a pressure ring (10), the inner wall of the pressure ring (10) is fixedly connected to a second oil cylinder (11), the pressure ring (10) is located at the end of a connecting sleeve (7), a connecting rod (12) is hinged between the pressure ring (10) and the connecting sleeve (7), the pressure ring (10) is sleeved on the electrode (5), and the copper shoe (8) is located between the electrode (5) and the pressure ring (10).

3. The electrode lifting mechanism of an electric arc furnace according to claim 1, characterized in that: The outer wall of the connecting sleeve (7) is fixedly connected with a clamping strip (13), the middle part of the roller of the pulley (6) is provided with a clamping groove, and the clamping strip (13) is embedded in the clamping groove and is slidably connected with the roller.

4. The electrode lifting mechanism of an electric arc furnace according to claim 1, characterized in that: A connecting rod (14) is fixedly connected between the two rows of opposing support columns (3).

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