Combined type water-cooling protection screen with same upper diameter and lower diameter for electric furnace conductive area

Abstract

The utility model relates to the technical field of electric furnace equipment, in particular to an upper-lower same-diameter combined type water-cooling protection screen for an electric furnace conductive area. The protective screen comprises an upper protective screen and a lower protective screen which are connected up and down, and is characterized in that the periphery of the upper protective screen is composed of a plurality of upper protective screen modules, and the periphery of the lower protective screen is composed of a plurality of lower protective screen modules; the periphery of the upper end of the upper protection screen is fixedly connected through a plurality of upper protection screen hangers, and the periphery of the lower protection screen is fixedly connected through a plurality of lower protection screen fixing devices. And the upper protection screen and the lower protection screen adopt the same diameter, so that interference between the protection screens and other parts in the moving process is avoided. And through the connection of the clamping plates, the protection screen modules can be conveniently connected to form the protection screen body. The upper protection screen and the lower protection screen are assembled and fixed through fixing of the upper protection screen hanging and fixing device, and elements around the electric furnace electrode can be protected.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnace equipment, namely an upper and lower same-diameter combined water-cooled protection screen in the conductive area of the electric furnace. Background Art

[0002] In the prior art, during the smelting process of the electric furnace, the water-cooled protection screen is used to improve the working environment of the conductive copper busbars or contact elements, block the dust generated during the production process, prevent it from entering the conductive area, ensure the normal operation between the copper busbars or contact elements and the electrode, block the direct radiation of the high temperature on the material surface to the copper busbars or contact elements, and when there is a flash fire on the material surface, prevent the flame from directly burning the copper busbars or contact elements, forming a protection barrier. The previous protection screen consisted of an upper protection screen 1 and a lower protection screen 2 (see Figure 7 ). To meet the space requirements of the components at the corresponding positions, the diameters of the upper protection screen 1 and the lower protection screen 2 are different. The materials of the upper protection screen 1 and the lower protection screen 2 are 321 stainless steel, which is double-layered, and the hollow part in the middle is the water channel. There are water inlets and outlets at the upper end of the module, and the internal water channel is cooled by passing water. Its disadvantages are: the diameter of the lower protection screen 2 is larger than that of the upper protection screen 1, and it is easy to interfere with components such as the central cover plate and the hood during the lifting process. The upper and lower protection screens are integrated, and the whole needs to be disassembled during maintenance, resulting in high maintenance costs and inconvenience in maintenance. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a combined type upper and lower same-diameter combined water-cooled protection screen in the conductive area of the electric furnace, which can be disassembled in blocks and is convenient for maintenance, aiming at the above deficiencies.

[0004] The technical solution of the utility model is: an upper and lower same-diameter combined water-cooled protection screen in the conductive area of the electric furnace, including an upper protection screen and a lower protection screen which are connected up and down. It is characterized in that the periphery of the upper protection screen is composed of a plurality of upper protection screen modules, and the periphery of the lower protection screen is composed of a plurality of lower protection screen modules; the upper end periphery of the upper protection screen is fixedly connected through a plurality of upper protection screen hangers, and the periphery of the lower protection screen is fixedly connected through a plurality of lower protection screen fixing devices.

[0005] In the above solution, it further includes:

[0006] The upper protection screen hanger includes a connecting plate, one end of the connecting plate is connected to the fixing plate by bolts, and the other end of the connecting plate is connected to the upper ear of the upper protection screen through a pin shaft.

[0007] The lower protection screen fixing device includes a fixing flat plate, one end of the fixing flat plate is sleeved on the upper part of the vertical screw rod, the lower end of the vertical screw rod is connected to the fixing nut, and the fixing nut is fixed on the upper edge of the pressure ring; the other end of the fixing flat plate is fixedly connected to the lower protection screen.

[0008] The other end of the fixed flat plate is fixedly connected to the lower protection screen by fixing a solid metal block on the hollow wall thickness of the lower protection screen, and fixing the solid metal block to the end plate at the end of the other end of the fixed flat plate through bolts.

[0009] The upper protection screen is in a cylindrical shape and is formed by plugging four arc-shaped upper protection screen modules through clamping plates; the lower protection screen is in a cylindrical shape and is formed by plugging four arc-shaped lower protection screen modules through clamping plates.

[0010] The advantages of the present utility model are as follows: 1. The upper protection screen and the lower protection screen adopt the same diameter, avoiding interference with other components during the movement of the protection screen. 2. Through the connection of the clamping plates, it is convenient to connect the protection screen modules to form the protection screen body. 3. Through the fixation of the upper protection screen hanging and fixing device, the upper protection screen and the lower protection screen are assembled and fixed, and the components around the electric furnace electrode can be protected. 4. By increasing the unit quantity of the protection screen modules, each corresponding to the vulnerable components inside the electric furnace. When a component fails, only the corresponding protection screen module needs to be disassembled to expose the component to be maintained, which is convenient for maintenance.

[0011] The embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings. Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of the present utility model.

[0013] Figure 2 It is a structural schematic diagram of the upper protection screen hanging structure.

[0014] Figure 3 It is Figure 2 A top view structural schematic diagram.

[0015] Figure 4 It is a structural schematic diagram of the lower protection screen fixing device.

[0016] Figure 5 It is Figure 4 A top view structural schematic diagram of the middle fixing plate.

[0017] Figure 6 It is a structural schematic diagram of the overall protection screen module.

[0018] Figure 7 It is a structural schematic diagram of the protection screen before improvement. Detailed Embodiment

[0019] See Figure 1-7, the component names are as follows: upper protection screen 1, lower protection screen 2, upper protection screen suspension 3, lower protection screen fixing device 4, fixing plate 5, bolt 6, connecting plate 7, pin shaft 8, upper ear of the upper protection screen 9, holding cylinder 10, fixing flat plate 11, vertical screw 12, fixing nut 13, upper edge of the pressure ring 14, fixing solid metal block 15, end plate 16, water inlet hole 17, water outlet hole 18.

[0020] See Figure 1 、 6 , the upper and lower same-diameter combined water-cooled protection screen in the electric furnace conductive area is composed of the upper protection screen 1, lower protection screen 2, upper protection screen suspension 3 and lower protection screen fixing device 4 which are connected up and down. The upper protection screen 1 and lower protection screen 2 are in a cylindrical shape. The upper protection screen 1 is composed of four arc-shaped upper protection screen modules separated from each other around. The lower protection screen 2 is composed of four arc-shaped lower protection screen modules around. The connection between each arc segment is realized by plugging with a clamping plate. The upper end of the upper protection screen 1 is fixedly connected through the upper protection screen suspension 3 around, and the lower protection screen 2 is fixedly connected through the lower protection screen fixing device 4 around. The four upper protection screen modules are plugged and matched through the clamping plate. There are positioning holes at the bottom end of the upper protection screen module and it is fixed by the upper protection screen suspension 3 above to form a circular upper protection screen. The lower protection screen 2 is composed of four lower protection screen modules. There are clamping plates on both sides of each lower protection screen module. The four lower protection screen modules are plugged and matched through the clamping plate and fixed by the inner lower protection screen fixing device 4 to form a circular lower protection screen. There is a protruding positioning shaft at the top end of the lower protection screen module and a positioning hole at the bottom end of the upper protection screen module. Insert the positioning shaft into the positioning hole to form a complete protection screen.

[0021] The upper protection screen 1 is in a cylindrical shape and is formed by plugging four arc-shaped upper protection screen modules with a clamping plate (see Figure 6 ); the lower protection screen 2 is in a cylindrical shape and is formed by plugging four arc-shaped lower protection screen modules with a clamping plate. Each arc-shaped protection screen module is provided with a water inlet hole 17 and a water outlet hole 18. The water inlet and outlet of the lower protection screen 2 are on the inner side of the upper end (figure omitted).

[0022] See Figure 1 、 2 、3, the upper protection screen suspension 3 is composed of a fixing plate 5, a bolt 6, a connecting plate 7 and a pin shaft 8. The upper protection screen suspension 3 includes a connecting plate 7. One end of the connecting plate 7 is connected to the fixing plate 5 through a bolt 6, which is convenient for adjusting the angle of the fixing plate 5. The other end of the connecting plate 7 is connected to the upper ear 9 of the upper protection screen 1 through a pin shaft 8, which is convenient for adjusting the angle of the ear 9. Finally, the left side of the fixing plate 5 is welded to the holding cylinder 10 to achieve fixation.

[0023] See Figure 1 、 4, 5. The lower protection screen fixing device 4 is composed of a fixing flat plate 11, a vertical screw rod 12, and a fixing nut 13. The lower protection screen fixing device 4 includes a fixing flat plate 11. One end of the fixing flat plate 11 is sleeved on the upper part of the vertical screw rod 12. The lower end of the vertical screw rod 12 is connected to the fixing nut 13, and the fixing nut 13 is fixed on the upper edge 14 of the pressure ring. The other end of the fixing flat plate 11 is fixedly connected to the lower protection screen 2. First, the fixing flat plate 11 is welded to the lower protection screen 2. The fixing nut 13 is welded to the upper edge 14 of the pressure ring. Finally, the fixing flat plate 11 is sleeved on the vertical screw rod 12 to achieve the lateral fixation of the lower protection screen 2. One lower protection screen fixing device 4 is provided corresponding to each lower protection screen module.

[0024] The other end of the fixing flat plate 11 is fixedly connected to the lower protection screen 2 by fixing a solid metal block 15 on the hollow wall thickness of the lower protection screen 2 to improve the connection strength. The solid metal block 15 and the end plate 16 at the end of the other end of the fixing flat plate 11 are fixedly connected by bolts, which is convenient for disassembly during maintenance. A gasket is also provided between the bolt connections.

[0025] The above description is only the specific implementation manner of the present invention, and various examples do not constitute a limitation to the substantial content of the present invention.

Claims

1. A combined water-cooled protective screen with the same diameter in the upper and lower conductive areas of an electric furnace, comprising an upper protective screen (1) and a lower protective screen (2) connected in an upper and lower manner, characterized in that The upper protective screen (1) is composed of a plurality of upper protective screen modules on its periphery, and the lower protective screen (2) is composed of a plurality of lower protective screen modules on its periphery; the upper end of the upper protective screen (1) is fixedly connected via a plurality of upper protective screen hangers (3) on its periphery, and the lower protective screen (2) is fixedly connected via a plurality of lower protective screen fixing devices (4) on its periphery.

2. The upper and lower same-diameter combined water-cooled protective screen for the conductive area of ​​the electric furnace according to claim 1 is characterized in that The upper protective screen hanging (3) comprises a connecting plate (7), one end of the connecting plate (7) is connected to the fixing plate (5) via a bolt (6), and the other end of the connecting plate (7) is connected to the upper lifting ear (9) of the upper protective screen via a pin shaft (8).

3. The upper and lower same-diameter combined water-cooled protective screen for the conductive area of ​​the electric furnace according to claim 1 is characterized in that The lower protective screen fixing device (4) comprises a fixing plate (11), one end of which is sleeved with the upper part of the vertical screw rod (12), the lower end of which is connected with a fixing nut (13), and the fixing nut (13) is fixed on the upper edge (14) of the pressure ring; the other end of the fixing plate (11) is fixedly connected to the lower protective screen (2).

4. The upper and lower same-diameter combined water-cooled protective screen for the conductive area of ​​an electric furnace according to claim 3 is characterized in that The other end of the fixed plate (11) is fixedly connected to the lower protective screen (2) by fixing a solid metal block (15) on the hollow wall thickness of the lower protective screen (2), and the solid metal block (15) is fixedly connected to the end plate (16) at the other end of the fixed plate (11) by bolts.

5. The upper and lower same-diameter combined water-cooled protective screen for the conductive area of ​​an electric furnace according to any one of claims 1 to 4, characterized in that The upper protective screen (1) is cylindrical in shape and is formed by four arc-segment upper protective screen modules plugged in via a cardboard; the lower protective screen (2) is cylindrical in shape and is formed by four arc-segment lower protective screen modules plugged in via a cardboard.

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