Electric arc furnace for steelmaking with anti-splashing structure

Abstract

The present invention provides an electric arc furnace for steelmaking with an anti-splashing structure, and relates to the technical field of electric arc furnaces. The electric arc furnace for steelmaking with an anti-splashing structure comprises a lower furnace shell, an upper furnace shell located above the lower furnace shell, and a furnace cover arranged on the top of the upper furnace shell, the right sides of the lower furnace shell and the upper furnace shell are fixedly provided with mounting plates, the two mounting plates are connected by an electric telescopic rod, the inner wall of the upper furnace shell is provided with a cold water pipe, and the upper furnace shell is provided with a protective component for protecting the cold water pipe. By arranging a protective component for protecting the cold water pipe inside the upper furnace shell, the bottom of the cold water pipe is protected, and the problem of cold water pipe leakage caused by contact between splashed molten steel and steel slag and the outer wall of the cold water pipe is avoided, ensuring that the cold water pipe will not leak easily, thereby preventing the occurrence of danger.

Description

Technical Field

[0001] The invention relates to the technical field of electric arc furnaces, in particular to an electric arc furnace for steelmaking with an anti-splashing structure. Background Art

[0002] Electric arc furnace steelmaking is an important metal smelting method. With the tightening of energy conservation and environmental protection requirements in the metallurgical industry, electric arc furnace steelmaking has received more and more attention. Electric arc furnace uses electricity as the main heat source, and directly heats the charge through the electric arc generated by the electrode to achieve metal melting. Compared with the traditional long-process production method, the electric arc furnace short-process steelmaking process has the advantages of short smelting process, low comprehensive energy consumption, low pollutant emissions, high production efficiency, and flexible production organization.

[0003] At present, during metal smelting, in order to increase the service life of the furnace body, cold water pipes are added to the inner wall of the upper furnace shell to cool the furnace wall through the cold water pipes. However, the cold water pipes are prone to leakage. This is because the cold water pipes are easily in contact with the splashing molten steel and slag. If the leakage is serious, it may cause a serious accident in which the molten metal explodes when it meets water, thereby increasing the incidence of danger. For this reason, we have developed a new electric arc furnace for steelmaking with an anti-splash structure. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an electric arc furnace for steelmaking with an anti-splashing structure, which solves the problem that the cold water pipe is easily in contact with the splashing molten steel and steel slag, and if the leakage is serious, it may cause a serious accident of molten metal exploding when it meets water.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the present invention is implemented by the following technical scheme: comprising a lower furnace shell, an upper furnace shell located above the lower furnace shell, and a furnace cover arranged on the top of the upper furnace shell, the lower furnace shell and the right side of the upper furnace shell are fixedly provided with mounting plates, the two mounting plates are connected by an electric telescopic rod, the inner wall of the upper furnace shell is provided with a cold water pipe, and the upper furnace shell is provided with a protective component for protecting the cold water pipe;

[0008] The protective assembly includes a mounting seat fixedly arranged on the left side of the lower furnace shell, a sliding column is rotatably arranged on the top of the mounting seat, a movable column is slidably arranged on the top of the sliding column, a connecting column is fixedly arranged on one side of the movable column, a positioning ring is fixedly arranged on the right side of the connecting column, the top and bottom of the positioning ring are respectively provided with placement grooves for placing the top of the lower furnace shell and the bottom of the upper furnace shell, a first mounting plate is fixedly arranged on the rear side of the top of the positioning ring, a plurality of protective rings are arranged above the positioning ring, a protective groove is arranged on the outer side of the protective ring, the protective ring is connected to the first mounting plate, and the bottom of the movable column is connected to the bottom end of the sliding column through a first return spring;

[0009] An adjusting seat is provided on the left side of the movable column, a first worm is rotatably provided in the adjusting seat, a first worm wheel meshing with the first worm is fixedly provided on the outer side of the movable column, a hand wheel coaxial with the first worm is rotatably provided on the front side of the adjusting seat, a vertical rod is fixedly provided on the bottom of the adjusting seat, a second slider is fixedly provided on the right side of the bottom end of the vertical rod, the second slider is slidably connected to the mounting seat, a mounting ring is fixedly provided on the outer side of the movable column, a first slider is rotatably provided on the outer side of the mounting ring, and the outer side of the first slider is connected to the top of the adjusting seat through a connecting block.

[0010] Through the above technical scheme, a protective component for protecting the cold water pipe is arranged inside the upper furnace shell, thereby achieving protection for the bottom of the cold water pipe, avoiding the problem of leakage of the cold water pipe caused by the contact between the splashing molten steel and slag and the outer wall of the cold water pipe, ensuring that the cold water pipe will not leak easily, thereby preventing the occurrence of danger.

[0011] Preferably, a horizontal plate is fixedly provided on the rear side of the adjusting seat, a first bevel gear is rotatably provided on the bottom of the horizontal plate, a second bevel gear coaxial with the first worm gear is rotatably provided on the rear side of the adjusting seat, the first bevel gear is meshed with the second bevel gear, a turntable coaxial with the first bevel gear is rotatably provided on the top of the horizontal plate, a second mounting rod is fixedly provided on the top of the horizontal plate, a first movable ring is slidably provided on the outer side of the second mounting rod, a limiting plate is fixedly provided on the right side of the first movable ring, a notch is provided on the outer side of the turntable to match the limiting plate, and the bottom end of the first movable ring is connected to the top end of the horizontal plate by a second return spring.

[0012] Through the above technical solution, by setting a turntable with a notch, and then through the cooperation of the turntable and the limit plate, it is possible to accurately know whether the placement slot is aligned with the top of the furnace shell and the bottom of the upper furnace shell, thereby facilitating the installation of the protective component.

[0013] Preferably, a first mounting rod is fixedly provided on the top of the horizontal plate, a second movable ring is rotatably provided on the outer side of the first mounting rod, a limiting rod is fixedly provided on the outer side of the second movable ring, and a horizontal rod is fixedly provided on the rear side of the first movable ring.

[0014] Preferably, a first vertical plate is fixedly provided on the top of the adjustment seat, a gear is rotatably provided on the rear side of the first vertical plate, a toothed plate meshing with the gear is fixedly provided on the front side of the limiting plate, a second worm gear coaxial with the gear is rotatably provided on the front side of the first vertical plate, a second vertical plate is fixedly provided on the top of the adjustment seat, a second worm wheel meshing with the second worm gear is rotatably provided on the left side of the second vertical plate, and a warning bell coaxial with the second worm wheel is rotatably provided on the right side of the second vertical plate.

[0015] Preferably, a connecting plate is fixedly provided on the rear side of the protective ring, a plurality of connecting grooves matching the connecting plate are opened on the rear side of the first mounting plate, the connecting plate and the first mounting plate are connected by connecting bolts, and a groove for placing the end of the connecting bolt is opened on the rear side of the connecting plate.

[0016] Preferably, a plurality of positioning blocks are fixedly provided on the rear side of the first mounting plate, positioning holes cooperating with the positioning blocks are opened in the connecting plate, and the positioning holes penetrate the front and rear sides of the connecting plate.

[0017] (III) Beneficial effects

[0018] The present invention provides an electric arc furnace for steelmaking with an anti-splashing structure. It has the following beneficial effects:

[0019] The electric arc furnace for steelmaking with an anti-splashing structure has a protective component for protecting the cold water pipe arranged inside the upper furnace shell, thereby protecting the bottom of the cold water pipe, avoiding the problem of cold water pipe leakage caused by contact between splashed molten steel and steel slag and the outer wall of the cold water pipe, ensuring that the cold water pipe will not leak easily, thereby preventing the occurrence of danger.

[0020] The electric arc furnace for steelmaking with a splash-proof structure is provided with a turntable with a notch, and through the cooperation of the turntable and the limit plate, it can be accurately known whether the placement groove is aligned with the top of the furnace shell and the bottom of the upper furnace shell, thereby facilitating the installation of the protection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram showing the appearance of the present invention;

[0022] Figure 2 This is a diagram showing the protective component of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the upper furnace shell in the present invention;

[0024] Figure 4 This is a diagram showing the positioning ring in the present invention;

[0025] Figure 5It is a rear view of the first mounting plate in the present invention;

[0026] Figure 6 It is a rear view of the connecting plate in the present invention;

[0027] Figure 7 This is a diagram showing the mounting base of the present invention;

[0028] Figure 8 This is a diagram showing the movable column in the present invention;

[0029] Fig. 9 It is a top view of the adjustment seat in the present invention;

[0030] Fig.10 It is a right side view of the adjustment seat in the present invention;

[0031] Fig.11 This is a display diagram of the second vertical board in the present invention;

[0032] Fig.12 It is a display diagram of the horizontal board in the present invention.

[0033] Among them, 1, lower furnace shell; 2, upper furnace shell; 3, furnace cover; 4, protective assembly; 11, mounting plate; 12, electric telescopic rod; 21, cold water pipe; 41, mounting seat; 42, positioning ring; 43, movable column; 44, adjustment seat; 45, horizontal plate; 46, first mounting rod; 47, first vertical plate; 48, second vertical plate; 421, first mounting plate; 422, protective ring; 423, connecting plate; 424, connecting bolt; 425, positioning block; 426, groove; 431, connecting column; 432, sliding column; 433, installation Mounting ring; 434, first slider; 435, connecting block; 441, hand wheel; 442, first worm; 443, first worm wheel; 444, vertical rod; 445, second slider; 451, first bevel gear; 452, second bevel gear; 453, turntable; 454, second mounting rod; 455, first movable ring; 456, limit plate; 457, cross rod; 458, tooth plate; 461, second movable ring; 462, limit rod; 471, gear; 472, worm; 481, second worm wheel; 482, warning bell. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example:

[0036] like Figure 1-Figure 12 As shown, the embodiment of the present invention provides: comprising a lower furnace shell 1, an upper furnace shell 2 located above the lower furnace shell 1, and a furnace cover 3 arranged on the top of the upper furnace shell 2, a mounting plate 11 is fixedly arranged on the right side of the lower furnace shell 1 and the upper furnace shell 2, and the two mounting plates 11 are connected by an electric telescopic rod 12, a cold water pipe 21 is arranged on the inner wall of the upper furnace shell 2, and a protective component 4 for protecting the cold water pipe 21 is arranged in the upper furnace shell 2;

[0037] The protection component 4 includes a mounting seat 41 fixedly arranged on the left side of the lower furnace shell 1, a sliding column 432 is rotatably arranged on the top of the mounting seat 41, a movable column 43 is slidably arranged on the top of the sliding column 432, a connecting column 431 is fixedly arranged on one side of the movable column 43, a positioning ring 42 is fixedly arranged on the right side of the connecting column 431, and the top and bottom of the positioning ring 42 are respectively provided with placement grooves for placing the top of the lower furnace shell 1 and the bottom of the upper furnace shell 2, a first mounting plate 421 is fixedly arranged on the rear side of the top of the positioning ring 42, a plurality of protection rings 422 are arranged above the positioning ring 42, and a protection groove is opened on the outer side of the protection ring 422, the protection ring 422 is connected to the first mounting plate 421, and the bottom of the movable column 43 is connected to the bottom end of the sliding column 432 through a first return spring;

[0038] An adjusting seat 44 is provided on the left side of the movable column 43, and a first worm 442 is rotatably provided in the adjusting seat 44, a first worm wheel 443 meshing with the first worm 442 is fixedly provided on the outer side of the movable column 43, a hand wheel 441 coaxial with the first worm 442 is rotatably provided on the front side of the adjusting seat 44, a vertical rod 444 is fixedly provided on the bottom of the adjusting seat 44, a second slider 445 is fixedly provided on the right side of the bottom end of the vertical rod 444, and the second slider 445 is slidably connected to the mounting seat 41, a mounting ring 433 is fixedly provided on the outer side of the movable column 43, a first slider 434 is rotatably provided on the outer side of the mounting ring 433, and the outer side of the first slider 434 is connected to the top of the adjusting seat 44 through a connecting block 435.

[0039] When the cold water pipe 21 needs to be protected, firstly, due to the provision of the vertical rod 444 and the second slider 445, the guiding of the adjusting seat 44 can be achieved. At this time, the hand wheel 441 is rotated, thereby driving the first worm 442 to rotate, thereby driving the first worm gear 443 to rotate, thereby driving the movable column 43 to rotate, thereby driving the connecting column 431 to rotate, thereby driving the positioning ring 42 to rotate, thereby driving the first mounting plate 421 to rotate, thereby driving multiple protective rings 422 to rotate. After rotating to a certain extent, the electric telescopic rod 12 can be driven, and the upper mounting plate 11 is driven by the electric telescopic rod 12 to move downward, thereby driving the upper furnace shell 2 to move downward, until the bottom end of the upper furnace shell 2 and the top end of the lower furnace shell are both inserted into the placement groove, and steelmaking can be carried out at this time.

[0040] A horizontal plate 45 is fixedly provided on the rear side of the adjusting seat 41, and a first bevel gear 451 is rotatably provided on the bottom of the horizontal plate 45. A second bevel gear 452 coaxial with the first worm gear 442 is rotatably provided on the rear side of the adjusting seat 41, and the first bevel gear 451 is meshed with the second bevel gear 452. A turntable 453 coaxial with the first bevel gear 451 is rotatably provided on the top of the horizontal plate 45. A second mounting rod 454 is fixedly provided on the top of the horizontal plate 45, and a first movable ring 455 is slidably provided on the outer side of the second mounting rod 454. A limiting plate 456 is fixedly provided on the right side of the first movable ring 455, and a notch matching the limiting plate 456 is provided on the outer side of the turntable 453, and the bottom end of the first movable ring 455 is connected to the top end of the horizontal plate 45 by a second return spring.

[0041] When the position of the protective ring 422 is adjusted, the first worm 442 is driven to rotate by turning the hand wheel 441, which in turn drives the second bevel gear 452 to rotate, which in turn drives the first bevel gear 451 to rotate, and then drives the turntable 453 to rotate. When the notch of the turntable 453 is located directly below the limit plate 456, the first movable ring 455 is driven to move downward by the second return spring, and then drives the limit plate 456 to move downward, so that the limit plate 456 just presses into the notch. At this time, the limit of the turntable 453 is achieved, and the limit of the first worm gear 442 is also achieved. At the same time, the positioning ring 42 rotates to between the lower furnace shell 1 and the upper furnace shell 2, and the top of the lower furnace shell 1 and the bottom of the upper furnace shell 2 can press into the placement groove, thereby realizing the position adjustment of the protective ring 422.

[0042] A first mounting rod 46 is fixedly provided on the top of the transverse plate 45 , a second movable ring 461 is rotatably provided on the outer side of the first mounting rod 46 , a limiting rod 462 is fixedly provided on the outer side of the second movable ring 461 , and a transverse rod 457 is fixedly provided on the rear side of the first movable ring 455 .

[0043] When the turntable 453 needs to be rotated, the limit plate 456 needs to be disengaged from the notch, and the first movable ring 455 is first moved upward, thereby driving the limit plate 456 to move upward, and then driving the cross bar 457 to move upward at the same time. When the horizontal height of the cross bar 457 is higher than the height of the limit rod 462, the second movable ring 461 is rotated at this time, thereby driving the limit rod 462 to rotate until the limit rod 462 is located at the bottom of the cross bar 457, thereby achieving the limitation of the cross bar 457.

[0044] A first vertical plate 47 is fixedly provided on the top of the adjustment seat 44, a gear 471 is rotatably provided on the rear side of the first vertical plate 47, a toothed plate 458 meshing with the gear 471 is fixedly provided on the front side of the limiting plate 456, a second worm 472 coaxial with the gear 471 is rotatably provided on the front side of the first vertical plate 47, a second vertical plate 48 is fixedly provided on the top of the adjustment seat 44, a second worm wheel 481 meshing with the second worm wheel 472 is rotatably provided on the left side of the second vertical plate 48, and a warning bell 482 coaxial with the second worm wheel 481 is rotatably provided on the right side of the second vertical plate 48.

[0045] A connecting plate 423 is fixedly provided on the rear side of the protective ring 422, and a plurality of connecting grooves matching the connecting plate 423 are opened on the rear side of the first mounting plate 421. The connecting plate 423 and the first mounting plate 421 are connected by connecting bolts 424, and a groove 426 for placing the end of the connecting bolt 424 is opened on the rear side of the connecting plate 423.

[0046] A plurality of positioning blocks 425 are fixedly disposed on the rear side of the first mounting plate 421 . Positioning holes matching the positioning blocks 425 are formed in the connecting plate 423 . The positioning holes penetrate the front and rear sides of the connecting plate 423 .

[0047] Working principle: when the cold water pipe 21 needs to be protected, firstly, due to the provision of the vertical rod 444 and the second sliding block 445, the adjusting seat 44 can be guided. At this time, the hand wheel 441 is rotated, thereby driving the first worm 442 to rotate, thereby driving the first worm gear 443 to rotate, thereby driving the movable column 43 to rotate, thereby driving the connecting column 431 to rotate, thereby driving the positioning ring 42 to rotate, thereby driving the first mounting plate 421 to rotate, thereby driving the plurality of protective rings 422 to rotate. After rotating to a certain extent, the electric telescopic rod 12 can be driven, and the upper mounting plate 11 is driven to move downward by the electric telescopic rod 12, thereby driving the upper furnace shell 2 to move downward, until the bottom end of the upper furnace shell 2 and the top end of the lower furnace shell are both inserted into the placement groove, and steelmaking can be carried out at this time;

[0048] When the position of the protective ring 422 is adjusted, the first worm 442 is driven to rotate by turning the hand wheel 441, thereby driving the second bevel gear 452 to rotate, thereby driving the first bevel gear 451 to rotate, and then driving the rotating disk 453 to rotate. When the notch of the rotating disk 453 is located directly below the limiting plate 456, the first movable ring 455 is driven to move downward by the second return spring, thereby driving the limiting plate 456 to move downward, so that the limiting plate 456 just presses into the notch. At this time, the limiting of the rotating disk 453 is realized, and the limiting of the first worm gear 442 is also realized. At the same time, the positioning ring 42 rotates to between the lower furnace shell 1 and the upper furnace shell 2, and the top of the lower furnace shell 1 and the bottom of the upper furnace shell 2 can press into the placement groove, thereby realizing the position adjustment of the protective ring 422;

[0049] When the turntable 453 needs to be rotated, the limit plate 456 needs to be disengaged from the notch, and the first movable ring 455 is first moved upward, thereby driving the limit plate 456 to move upward, and then driving the cross bar 457 to move upward at the same time. When the horizontal height of the cross bar 457 is higher than the height of the limit rod 462, the second movable ring 461 is rotated at this time, thereby driving the limit rod 462 to rotate until the limit rod 462 is located at the bottom of the cross bar 457, thereby achieving the limitation of the cross bar 457.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric arc furnace for steelmaking with a splash-proof structure, characterized in that: The furnace shell (1) comprises a lower furnace shell (1), an upper furnace shell (2) located above the lower furnace shell (1), and a furnace cover (3) arranged on the top of the upper furnace shell (2); a mounting plate (11) is fixedly arranged on the right side of the lower furnace shell (1) and the upper furnace shell (2); the two mounting plates (11) are connected by an electric telescopic rod (12); a cold water pipe (21) is arranged on the inner wall of the upper furnace shell (2); and a protective component (4) for protecting the cold water pipe (21) is arranged inside the upper furnace shell (2); The protection component (4) comprises a mounting seat (41) fixedly arranged on the left side of the lower furnace shell (1); a sliding column (432) is rotatably arranged on the top of the mounting seat (41); a movable column (43) is slidably arranged on the top of the sliding column (432); a connecting column (431) is fixedly arranged on one side of the movable column (43); a positioning ring (42) is fixedly arranged on the right side of the connecting column (431); the top and bottom of the positioning ring (42) are respectively provided with placement grooves for placing the top of the lower furnace shell (1) and the bottom of the upper furnace shell (2); a first mounting plate (421) is fixedly arranged on the rear side of the top of the positioning ring (42); a plurality of protection rings (422) are arranged above the positioning ring (42); a protection groove is arranged on the outer side of the protection ring (422); the protection ring (422) is connected to the first mounting plate (421); and the bottom of the movable column (43) is connected to the bottom end of the sliding column (432) via a first return spring; An adjustment seat (44) is provided on the left side of the movable column (43), a first worm (442) is rotatably provided inside the adjustment seat (44), a first worm wheel (443) meshing with the first worm (442) is fixedly provided on the outer side of the movable column (43), a hand wheel (441) coaxial with the first worm (442) is rotatably provided on the front side of the adjustment seat (44), a vertical rod (444) is fixedly provided on the bottom of the adjustment seat (44), a second slider (445) is fixedly provided on the right side of the bottom end of the vertical rod (444), the second slider (445) is slidably connected to the mounting seat (41), a mounting ring (433) is fixedly provided on the outer side of the movable column (43), a first slider (434) is rotatably provided on the outer side of the mounting ring (433), and the outer side of the first slider (434) is connected to the top of the adjustment seat (44) via a connecting block (435); A transverse plate (45) is fixedly provided on the rear side of the adjustment seat (44); a first bevel gear (451) is rotatably provided on the bottom of the transverse plate (45); a second bevel gear (452) coaxial with the first worm gear (442) is rotatably provided on the rear side of the adjustment seat (44); the first bevel gear (451) meshes with the second bevel gear (452); a rotating disk (453) coaxial with the first bevel gear (451) is rotatably provided on the top of the transverse plate (45); a second mounting rod (454) is fixedly provided on the top of the transverse plate (45); a first movable ring (455) is slidably provided on the outer side of the second mounting rod (454); a limiting plate (456) is fixedly provided on the right side of the first movable ring (455); a notch matching the limiting plate (456) is provided on the outer side of the rotating disk (453); and the bottom end of the first movable ring (455) is connected to the top end of the transverse plate (45) via a second return spring.

2. The electric arc furnace for steelmaking with a splash-proof structure according to claim 1, characterized in that: A first mounting rod (46) is fixedly provided on the top of the transverse plate (45); a second movable ring (461) is rotatably provided on the outer side of the first mounting rod (46); a limit rod (462) is fixedly provided on the outer side of the second movable ring (461); and a transverse rod (457) is fixedly provided on the rear side of the first movable ring (455).

3. The electric arc furnace for steelmaking with a splash-proof structure according to claim 2, characterized in that: A first vertical plate (47) is fixedly provided on the top of the adjustment seat (44), a gear (471) is rotatably provided on the rear side of the first vertical plate (47), a toothed plate (458) meshing with the gear (471) is fixedly provided on the front side of the limit plate (456), a second worm gear (472) coaxial with the gear (471) is rotatably provided on the front side of the first vertical plate (47), a second vertical plate (48) is fixedly provided on the top of the adjustment seat (44), a second worm wheel (481) meshing with the second worm wheel (472) is rotatably provided on the left side of the second vertical plate (48), and a warning bell (482) coaxial with the second worm wheel (481) is rotatably provided on the right side of the second vertical plate (48).

4. The electric arc furnace for steelmaking with a splash-proof structure according to claim 3, characterized in that: A connecting plate (423) is fixedly provided on the rear side of the protective ring (422); a plurality of connecting grooves matching the connecting plate (423) are provided on the rear side of the first mounting plate (421); the connecting plate (423) and the first mounting plate (421) are connected via connecting bolts (424); a groove (426) for accommodating the ends of the connecting bolts (424) is provided on the rear side of the connecting plate (423).

5. The electric arc furnace for steelmaking with a splash-proof structure according to claim 4, characterized in that: A plurality of positioning blocks (425) are fixedly arranged on the rear side of the first mounting plate (421), and positioning holes matching the positioning blocks (425) are provided in the connecting plate (423), the positioning holes penetrating the front and rear sides of the connecting plate (423).

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