Electrode cleaning device for submerged arc furnace

Abstract

The utility model relates to the technical field of silicon-aluminum alloy smelting equipment, and particularly discloses a submerged arc furnace electrode cleaning device. Comprising lifting devices, telescopic devices, scraping tiles and balancing weights, the two same lifting devices are symmetrically arranged on the two sides of an electrode of the submerged arc furnace, the telescopic devices and the balancing weights are fixedly installed on the lifting devices, the scraping tiles are fixedly installed at the telescopic ends of the telescopic devices, and the inner sides of the two scraping tiles make movable contact with the electrode; the material scraping tiles are driven by the lifting device and the telescopic device to repeatedly scrape the outer walls of the electrodes, and materials adhered to the outer walls of the electrodes are cleaned up, so that the conductivity of the electrodes can be recovered, and arcing between the electrodes is facilitated; a traditional manual operation mode is replaced, an operator does not need to be close to a hearth of the submerged arc furnace for operation, the risk that the operator is scalded is reduced, the labor intensity of the operator is reduced, and the cleaning efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon-aluminum alloy smelting equipment, in particular to a submerged arc furnace electrode cleaning device. Background Art

[0002] AC submerged arc furnace is a commonly used equipment for smelting silicon-aluminum alloy. The AC submerged arc furnace is connected to three electrodes through three-phase AC power, and uses the energy of the arc and the current to generate energy through the resistance of the charge to melt the metal; when working, part of the electrode is buried in the charge, and the molten charge is in direct contact with the electrode. After long-term operation, a layer of sticky material with poor conductivity will adhere to the electrode, and its main components are organic matter, oxides and carbides, etc., which makes it difficult to start an arc between the electrodes. The sticky material attached to the electrode needs to be cleaned to restore the conductivity of the electrode.

[0003] The existing treatment method is to lift the electrode, and the operator uses a tool to knock or scrape off the attachments adhering to the electrode. Due to the high temperature near the electric arc furnace, the working environment is relatively harsh when the workers clean the electrodes. When people operate near the door of the electric arc furnace, there is a risk of burns due to material splashing. In addition, the labor intensity of the operators is high and the cleaning efficiency is low. Utility Model Content

[0004] The utility model aims to provide an electrode cleaning device for an electric arc furnace to solve the problems existing in the prior art.

[0005] The utility model is implemented by the following technical scheme: a device for cleaning electrodes of an ore-bearing furnace, comprising a lifting device, a telescopic device, a scraper tile and a counterweight block, two identical lifting devices are symmetrically arranged on both sides of the electrode of the ore-bearing furnace, the telescopic device and the counterweight block are fixedly installed on the lifting device, and a scraper tile is fixedly installed on the telescopic end of the telescopic device, and the inner sides of the two scraper tiles are in active contact with the electrode.

[0006] Furthermore, the lifting device includes: a base, a lifting platform, a spiral lifting screw, a first vertical axis gear box, a second vertical axis gear box and a lifting motor. Four spiral lifting screws are fixedly installed on the base, and the four spiral lifting screws are respectively placed at four top angles of the base. A lifting platform is provided above the spiral lifting screw, and a counterweight is fixedly provided on the bottom surface of the lifting platform. The bottom of the lifting platform is fixedly connected to the top of the lifting rod of the spiral lifting screw. A first vertical axis gear box is fixedly installed between every two spiral lifting screws, and the input shafts of the two spiral lifting screws are respectively connected to the output shafts at both ends of the first vertical axis gear box for transmission. A second vertical axis gear box is fixedly installed between the two first vertical axis gear boxes, and the input shafts of the two first vertical axis gear boxes are respectively connected to the output shafts on both sides of the second vertical axis gear box for transmission. The input shaft of the second vertical axis gear box is connected to the output shaft of the lifting motor for transmission, and the lifting motor is fixedly installed on the base.

[0007] Furthermore, the input shaft of the spiral lifting screw and the output shaft of the first vertical axis gear box, as well as the input shaft of the first vertical axis gear box and the output shaft of the second vertical axis gear box are connected through a transmission shaft and a coupling.

[0008] Furthermore, the telescopic device includes: a spiral telescopic screw, a telescopic motor, a docking flange and an extension rod. The spiral telescopic screw is fixedly installed on the top surface of the lifting platform of the lifting device. The input shaft of the spiral telescopic screw is transmission-connected with the output shaft of the telescopic motor. The telescopic motor is fixedly connected to the lifting platform. The telescopic rod of the spiral telescopic screw is coaxially fixedly connected with the extension rod through a docking flange, and a scraper shoe is fixedly installed on the free end of the extension rod.

[0009] Furthermore, the scraper tile is a semicircular tile, and a convex ridge is integrally formed on the inner wall of the scraper tile.

[0010] Furthermore, it also includes lifting ears, and a plurality of lifting ears are fixedly provided on the top surface of the lifting platform of the lifting device.

[0011] The advantages of the utility model are as follows: the lifting device and the telescopic device drive the scraper shoe to repeatedly scrape the outer wall of the electrode, so as to clean the material adhering to the outer wall of the electrode, thereby restoring the conductivity of the electrode and facilitating arc starting between the electrodes; it replaces the traditional manual operation method, and the operator does not need to operate close to the furnace of the electric arc furnace, which reduces the risk of scalding of personnel, reduces the labor intensity of personnel, and has high cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the lifting device.

[0014] Figure 3 It is a structural schematic diagram of the telescopic device.

[0015] In the figure: lifting device 1, telescopic device 2, scraper shoe 3, electrode 4, lifting ear 5, counterweight 6, base 101, lifting platform 102, spiral lifting screw 103, first vertical axis gear box 104, second vertical axis gear box 105, lifting motor 106, transmission shaft 107, coupling 108, spiral telescopic screw 201, telescopic motor 202, docking flange 203, extension rod 204, convex ridge 301. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0018] like Figure 1 As shown: a mineral arc furnace electrode cleaning device, comprising a lifting device 1, a telescopic device 2, a scraper tile 3 and a counterweight 6, two identical lifting devices 1 are symmetrically arranged on both sides of the electrode 4 of the mineral arc furnace, and the telescopic device 2 and the counterweight 6 are fixedly installed on the lifting device 1. When in use, the lifting device 1 is placed on both sides of the mineral arc furnace body, and furnace doors are arranged on both sides of the mineral arc furnace. After the furnace doors are opened, the telescopic device 2 can be extended into the furnace, and scraper tiles 3 are fixedly installed on the telescopic ends of the telescopic device 2. The inner sides of the two scraper tiles 3 are in active contact with the electrode 4. The scraper tiles 3 are semicircular tiles, and the scraper tiles 3 are made of wear-resistant manganese steel material. The two scraper tiles 3 can be spliced ​​and docked into a cylindrical inner wall, which surrounds the outer wall of the electrode 4. A convex ridge 301 is integrally formed on the inner wall of the scraper tile 3. The convex ridge 301 scrapes the material adhered to the outer wall of the electrode 4, which can better remove the material adhered to the outer wall of the electrode 4, thereby exposing the surface of the electrode to restore the electrical conductivity of the electrode.

[0019] like Figure 2As shown: the lifting device 1 includes: a base 101, a lifting platform 102, a spiral lifting screw 103, a first vertical axis gear box 104, a second vertical axis gear box 105 and a lifting motor 106. Four spiral lifting screws 103 are fixedly installed on the base 101. The spiral lifting screws 103 are meshed with the screws through gears to drive their lifting rods to move up and down. The four spiral lifting screws 103 are respectively placed at four vertex positions of the base 101. The shells of the spiral lifting screws 103 are fixedly connected to the base 101. A lifting platform 102 is provided above the spiral lifting screws 103. A counterweight 6 is fixedly provided on the bottom surface of the lifting platform 102. The counterweight 6 is used to increase the overall weight of the lifting device 1 and provide downward pressure when the scraper tile 3 scrapes the electrode 4; the bottom of the lifting platform 102 is fixedly connected to the top of the lifting rod of the spiral lifting screw 103, so that the spiral lifting screw 103 can drive the lifting platform 102 to move up and down, and a screw is fixed between every two spiral lifting screws 103. A first vertical axis gearbox 104 is installed, and the input shafts of the two spiral lifting screws 103 are respectively connected to the output shafts at both ends of the first vertical axis gearbox 104, and a second vertical axis gearbox 105 is fixedly installed between the two first vertical axis gearboxes 104. The input shafts of the two first vertical axis gearboxes 104 are respectively connected to the output shafts on both sides of the second vertical axis gearbox 105. The input shaft of the spiral lifting screw 103 and the output shaft of the first vertical axis gearbox 104, and the input shaft of the first vertical axis gearbox 104 and the output shaft of the second vertical axis gearbox 105 are all connected through a transmission shaft 107 and a coupling 108; the input shaft of the second vertical axis gearbox 105 is connected to the output shaft of the lifting motor 106, and the lifting motor 106 is fixedly installed on the base 101. The lifting motor 106 can simultaneously drive the four spiral lifting screws 103 to rise and fall synchronously by forward and reverse rotation, thereby keeping the lifting platform 102 in horizontal lifting and moving during the lifting process.

[0020] like Figure 3As shown: the telescopic device 2 includes: a spiral telescopic screw 201, a telescopic motor 202, a docking flange 203 and an extension rod 204. The spiral telescopic screw 201 is fixedly installed on the top surface of the lifting platform 102 of the lifting device 1. The spiral telescopic screw 201 is meshed with the screw through a gear, and then the telescopic rod can be driven to telescopically move. The shell of the spiral telescopic screw 201 is fixedly connected to the lifting platform 102, the input shaft of the spiral telescopic screw 201 is transmission-connected to the output shaft of the telescopic motor 202, the telescopic motor 202 is fixedly connected to the lifting platform 102, the telescopic rod of the spiral telescopic screw 201 is coaxially fixedly connected to the extension rod 204 through the docking flange 203, and the free end of the extension rod 204 is fixedly installed with a scraper tile 3. During the scraping operation, the temperature of the electrode 4 is relatively high, so the scraper tile 3 wears faster. When the scraper tile 3 needs to be replaced, the screws on the docking flange 203 are removed to disconnect the connection between the extension rod 204 and the telescopic rod of the spiral telescopic screw 201, which is convenient for disassembly and maintenance.

[0021] Working principle: when the electrode 4 needs to be cleaned, the bases of the two lifting devices 1 are placed in front of the furnace door respectively, the electrode 4 to be cleaned is lifted up, so that the part with the material adhered leaks out of the liquid surface of the material, and the two spiral telescopic screws 201 of the telescopic device 2 are aligned with the electrode 4 to be cleaned, and then the furnace door is opened, and the lifting device 1 is controlled to rise to the highest position, and then the spiral telescopic screw 201 of the telescopic device 2 is controlled to extend, so that the two scraper tiles 3 are close to the outer wall of the electrode 4, and then the lifting motor 106 of the lifting device 1 is controlled to reverse, so that the lifting platform 102 descends, and drives the scraper tiles 3 to scrape downward. After cleaning off a layer of sticky material, the telescopic motor 202 is controlled to reverse again, so that the scraper tiles 3 are separated from the outer wall of the electrode 4 by a certain distance, and the lifting device 1 is controlled to rise again, and then the above steps are repeated. Finally, the two scraper tiles 3 can be kept close to the electrode 4, and the lifting device 1 is repeatedly controlled to move up and down to try to completely scrape off the material adhered to the motor 4.

[0022] In order to facilitate movement and placement, a plurality of lifting ears 5 are fixedly provided on the top surface of the lifting platform 102 of the lifting device 1, which can be connected to the crane above the factory building through a hook for easy transportation.

Claims

1. A submerged arc furnace electrode cleaning device, characterized in that: The invention comprises a lifting device (1), a telescopic device (2), a scraper tile (3) and a counterweight (6), wherein two identical lifting devices (1) are symmetrically arranged on both sides of an electrode (4) of an electric arc furnace, the telescopic device (2) and the counterweight (6) are fixedly mounted on the lifting device (1), and a scraper tile (3) is fixedly mounted on the telescopic end of the telescopic device (2), and the inner sides of the two scraper tiles (3) are in active contact with the electrode (4).

2. The electrode cleaning device for a submerged arc furnace according to claim 1, characterized in that: The lifting device (1) comprises: a base (101), a lifting platform (102), a spiral lifting screw (103), a first vertical axis gear box (104), a second vertical axis gear box (105) and a lifting motor (106); four spiral lifting screws (103) are fixedly mounted on the base (101); the four spiral lifting screws (103) are respectively placed at four top corners of the base (101); a lifting platform (102) is provided above the spiral lifting screws (103); a counterweight (6) is fixedly provided on the bottom surface of the lifting platform (102); the bottom of the lifting platform (102) is fixedly connected to the top of the lifting rod of the spiral lifting screw (103); each A first vertical axis gear box (104) is fixedly installed between the two spiral lifting screws (103); the input shafts of the two spiral lifting screws (103) are respectively connected to the output shafts at both ends of the first vertical axis gear box (104); a second vertical axis gear box (105) is fixedly installed between the two first vertical axis gear boxes (104); the input shafts of the two first vertical axis gear boxes (104) are respectively connected to the output shafts at both sides of the second vertical axis gear box (105); the input shaft of the second vertical axis gear box (105) is connected to the output shaft of the lifting motor (106); and the lifting motor (106) is fixedly installed on the base (101).

3. The electrode cleaning device for a submerged arc furnace according to claim 2, characterized in that: The input shaft of the spiral lifting screw (103) and the output shaft of the first vertical axis gear box (104), as well as the input shaft of the first vertical axis gear box (104) and the output shaft of the second vertical axis gear box (105) are both connected in transmission via a transmission shaft (107) and a coupling (108).

4. The electrode cleaning device for a submerged arc furnace according to claim 2, characterized in that: The telescopic device (2) comprises: a spiral telescopic screw (201), a telescopic motor (202), a docking flange (203) and an extension rod (204); the spiral telescopic screw (201) is fixedly mounted on the top surface of a lifting platform (102) of the lifting device (1); an input shaft of the spiral telescopic screw (201) is drivingly connected to an output shaft of the telescopic motor (202); the telescopic motor (202) is fixedly connected to the lifting platform (102); the telescopic rod of the spiral telescopic screw (201) is coaxially fixedly connected to the extension rod (204) via the docking flange (203); and a scraper shoe (3) is fixedly mounted on the free end of the extension rod (204).

5. The electrode cleaning device for a submerged arc furnace according to claim 1, characterized in that: The scraper tile (3) is a semicircular tile, and a convex ridge (301) is integrally formed on the inner wall of the scraper tile (3).

6. A submerged arc furnace electrode cleaning device according to any one of claims 2 to 5, characterized in that: It also includes lifting ears (5), and a plurality of lifting ears (5) are fixedly provided on the top surface of the lifting platform (102) of the lifting device (1).

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