Ladle covering and uncovering device of LF furnace

Abstract

The utility model provides a ladle covering and uncovering device of an LF furnace, which comprises a mounting plate and a rack, the inner wall of the mounting plate is rotatably sleeved with a first mounting rod, one end of the first mounting rod is fixedly connected with a first stud gear, and the other end of the first mounting rod is fixedly connected with a first cover plate; the inner wall of the mounting plate is rotationally sleeved with a second mounting rod, one end of the second mounting rod is fixedly connected with a second cylindrical gear, and the second cylindrical gear is connected with the first cylindrical gear in an engaged mode. Through work of a motor, a threaded sleeve can move on the surface of a threaded rod, the tops of the threaded sleeve and the threaded rod are in an opening and closing state, the bottoms of the threaded sleeve and the threaded rod are in a closing state, materials can be put into a first cover plate and a second cover plate, and the motor works to drive the first cover plate and the second cover plate to reset through the same principle; and at the moment, the top of the LF furnace is covered with the first cover plate and the second cover plate, and the materials cannot be splashed out of the LF furnace.

Description

Technical Field

[0001] This utility model relates to a ladle opening and closing device for an LF furnace, belonging to the field of metal smelting. Background Technology

[0002] The LF furnace is a ladle refining furnace, mainly used for ladle refining. Through electric arc heating, furnace reducing atmosphere, white slag refining, and gas stirring, it enhances thermodynamic and kinetic conditions, enabling molten steel to achieve comprehensive refining effects such as deoxidation, desulfurization, alloying, and temperature increase in a short time. The ladle refining furnace cover-opening device is a piece of equipment used in the ladle refining process. Its main function is to cover and open the ladle during the refining process. The operator usually moves the cover open through the drive mechanism, allowing steel to be added to the furnace. Then, the drive mechanism moves the cover to cover the top of the furnace, and the lifting mechanism drives the electric arc through the channel at the top of the cover to achieve smelting.

[0003] In the existing technology of LF furnace ladle lifting device, when the cover is removed to add steel, the furnace opening is in an open state. The steel entering the furnace is prone to splashing to the outside of the furnace. Since the temperature inside the furnace is extremely high, this will greatly increase the safety hazards around the furnace and reduce the safety of the device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a ladle cover opening device for an LF furnace to solve the problems mentioned in the background art. When feeding materials into the LF furnace, the materials will not splash out of the LF furnace, which greatly reduces the safety hazards in the working environment around the LF furnace and improves the safety of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ladle lifting device for an LF furnace, comprising a mounting plate and a frame. A first mounting rod is rotatably sleeved on the inner wall of the mounting plate. A first spur gear is fixedly connected to one end of the first mounting rod, and a first cover plate is fixedly connected to the other end of the first mounting rod. A second mounting rod is rotatably sleeved on the inner wall of the mounting plate. A second spur gear is fixedly connected to one end of the second mounting rod, and the second spur gear meshes with the first spur gear. A second cover plate is fixedly connected to the outer wall of the second mounting rod. A refining component is provided on the top of the frame.

[0006] A connecting frame is fixedly connected to the top of the first cover plate. A threaded sleeve is rotatably connected to the inner wall of the connecting frame. A threaded rod is threaded onto the inner wall of the threaded sleeve. A first bevel gear is fixedly connected to one end of the threaded rod. A connecting block is rotatably connected to one end of the first bevel gear. A driving component is provided on the inner top wall of the frame.

[0007] Furthermore, the first cover plate has an arc-shaped structure, the second cover plate has the same shape as the first cover plate, and an arc channel is provided on the top of the first cover plate.

[0008] Furthermore, the refining component includes a fixed frame, the bottom of which is fixedly connected to the top of the frame, and an electric push rod is fixedly connected to the inner top wall of the fixed frame.

[0009] Furthermore, a lifting plate is fixedly connected to the bottom of the electric push rod, and an electric arc column is fixedly connected to the bottom of the lifting plate.

[0010] Furthermore, the drive component includes a bracket, the top of which is fixedly connected to the inner top wall of the frame, a motor is fixedly sleeved on the inner wall of the bracket, and the output end of the motor is fixedly sleeved with a second bevel gear through a coupling.

[0011] Furthermore, the second bevel gear meshes with the first bevel gear, and one end of the motor coupling is rotatably connected to one side of the connecting block.

[0012] The beneficial effects of this utility model are:

[0013] 1. The operation of the motor allows the threaded sleeve to move on the surface of the threaded rod, so that the top of both is in an open state and the bottom is in a closed state. Material can then be placed inside the first cover plate and the second cover plate. The operation of the motor can also drive the first cover plate and the second cover plate to reset through the same principle, and then the material will fall into the interior of the LF furnace. At this time, the top of the LF furnace is covered by the first cover plate and the second cover plate, and the material will not splash out of the LF furnace, which greatly reduces the safety hazards in the working environment around the LF furnace and improves the safety of the device.

[0014] 2. The bottom of the electric push rod can drive the lifting plate and the electric arc column to move downward, so that the electric arc column can extend through the electric arc channel into the interior of the LF furnace installed at the bottom of the mounting plate to realize the refining of materials. The change of shape of the first cover plate and the second cover plate will not affect the refining of materials inside the LF furnace by the electric arc column, further meeting the working requirements of the device and improving its practicality. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a ladle cover opening device for an LF furnace according to the present invention;

[0017] Figure 2 This is a schematic diagram of the mounting plate in this utility model;

[0018] Figure 3 This is a front view of the first cover plate and the second cover plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the electric arc column in this utility model.

[0020] In the diagram: 1. Mounting plate; 2. First mounting rod; 3. First column gear; 4. First cover plate; 5. Arc channel; 6. Second mounting rod; 7. Second column gear; 8. Second cover plate; 9. Threaded sleeve; 10. Threaded rod; 11. First bevel gear; 12. Connecting block; 13. Second bevel gear; 14. Bracket; 15. Motor; 16. Fixing frame; 17. Electric push rod; 18. Lifting plate; 19. Arc column; 20. Frame; 21. Connecting frame. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a ladle lifting device for an LF furnace, including a mounting plate 1 and a frame 20. The mounting plate 1 has a "ring" shaped structure. The bottom of the mounting plate 1 is installed at the top opening of the LF furnace. A first mounting rod 2 is rotatably sleeved on the inner wall of the mounting plate 1. A first column gear 3 is fixedly connected to one end of the first mounting rod 2, and a first cover plate 4 is fixedly connected to the other end of the first mounting rod 2. A second mounting rod 6 is rotatably sleeved on the inner wall of the mounting plate 1. A second column gear 7 is fixedly connected to one end of the second mounting rod 6. The second column gear 7 meshes with the first column gear 3. A second cover plate 8 is fixedly connected to the outer wall of the second mounting rod 6. A refining component is provided on the top of the frame 20.

[0023] A connecting frame 21 is fixedly connected to the top of the first cover plate 4. A threaded sleeve 9 is rotatably connected to the inner wall of the connecting frame 21. A threaded rod 10 is threadedly sleeved on the inner wall of the threaded sleeve 9. A first bevel gear 11 is fixedly connected to one end of the threaded rod 10. A connecting block 12 is rotatably connected to one end of the first bevel gear 11. A driving component is provided on the inner top wall of the frame 20.

[0024] The first cover plate 4 has an arc-shaped structure, and the second cover plate 8 has the same shape as the first cover plate 4. An arc channel 5 is provided on the top of the first cover plate 4. When the first cover plate 4 and the second cover plate 8 rotate relative to each other, their two ends will contact each other to achieve bottom closure, and their tops will be in an open or closed state.

[0025] The refining component includes a fixed frame 16, the bottom of which is fixedly connected to the top of the frame 20. An electric push rod 17 is fixedly connected to the inner top wall of the fixed frame 16. The electric push rod 17 is an existing device and will not be explained in detail here. When the electric push rod 17 is working, its bottom extends and can penetrate through the frame gap of the frame 20.

[0026] The bottom of the electric push rod 17 is fixedly connected to the lifting plate 18, and the bottom of the lifting plate 18 is fixedly connected to the arc column 19. The bottom of the electric push rod 17 can drive the lifting plate 18 and the arc column 19 to move downward, so that the arc column 19 can extend through the arc channel 5 to the interior of the LF furnace installed at the bottom of the mounting plate 1.

[0027] The drive component includes a bracket 14, the top of which is fixedly connected to the inner top wall of the frame 20. A motor 15 is fixedly sleeved on the inner wall of the bracket 14. The output end of the motor 15 is fixedly sleeved with a second bevel gear 13 through a coupling, thereby starting the motor 15. The motor 15 will drive the second bevel gear 13 to rotate, which in turn will drive the threaded rod 10 to rotate through the first bevel gear 11.

[0028] The second bevel gear 13 meshes with the first bevel gear 11, and one end of the coupling of the motor 15 is rotatably connected to one side of the connecting block 12. The connecting block 12 can connect the first bevel gear 11 and the second bevel gear 13. The connecting block 12 will not affect the rotation of the first bevel gear 11 and the second bevel gear 13. When the threaded rod 10 rotates, the threaded sleeve 9 will move on the surface of the threaded rod 10. Then the threaded rod 10 rotates with the first bevel gear 11 as the endpoint, and the threaded sleeve 9 will move in an arc trajectory. Then the first cover plate 4 will rotate with the first mounting rod 2 as the fixed point. Since the second column gear 7 meshes with the first column gear 3, the second cover plate 8 will rotate at the same time. Then one end of the first cover plate 4 and the second cover plate 8 will overlap, and their tops will be in an open or closed state, so that materials can be put into the interior of the first cover plate 4 and the second cover plate 8.

[0029] Working principle: First, the operation of motor 15 can drive threaded rod 10 to rotate through first bevel gear 11 and second bevel gear 13. Then threaded sleeve 9 will move on the surface of threaded rod 10. Threaded sleeve 9 will move in an arc trajectory. First cover plate 4 and second cover plate 8 will rotate relative to each other, so that their tops are in an open state and their bottoms are in a closed state, so that materials can be put into the inside of first cover plate 4 and second cover plate 8.

[0030] Secondly, the motor 15 working in the same direction can drive the first cover plate 4 and the second cover plate 8 to reset, so that the material will fall into the interior of the LF furnace. At this time, the top of the LF furnace is covered by the first cover plate 4 and the second cover plate 8, and the material will not splash out of the LF furnace.

[0031] Finally, the electric push rod 17 is activated. The bottom of the electric push rod 17 can drive the lifting plate 18 and the electric arc column 19 to move downward, so that the electric arc column 19 can extend through the electric arc channel 5 to the interior of the LF furnace installed at the bottom of the mounting plate 1, thereby realizing the refining of materials.

[0032] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A ladle cover opening device for an LF furnace, comprising a mounting plate (1) and a frame (20), characterized in that: The inner wall of the mounting plate (1) is rotatably sleeved with a first mounting rod (2), one end of the first mounting rod (2) is fixedly connected to a first column gear (3), the other end of the first mounting rod (2) is fixedly connected to a first cover plate (4), the inner wall of the mounting plate (1) is rotatably sleeved with a second mounting rod (6), one end of the second mounting rod (6) is fixedly connected to a second column gear (7), the second column gear (7) meshes with the first column gear (3), the outer wall of the second mounting rod (6) is fixedly connected to a second cover plate (8), and a refining component is provided on the top of the frame (20); A connecting frame (21) is fixedly connected to the top of the first cover plate (4). A threaded sleeve (9) is rotatably connected to the inner wall of the connecting frame (21). A threaded rod (10) is threadedly sleeved on the inner wall of the threaded sleeve (9). A first bevel gear (11) is fixedly connected to one end of the threaded rod (10). A connecting block (12) is rotatably connected to one end of the first bevel gear (11). A driving component is provided on the inner top wall of the frame (20).

2. The ladle cover opening device for an LF furnace according to claim 1, characterized in that: The first cover plate (4) has an arc-shaped structure, and the shape of the second cover plate (8) is the same as that of the first cover plate (4). An arc channel (5) is provided on the top of the first cover plate (4).

3. The ladle cover opening device for an LF furnace according to claim 1, characterized in that: The refining component includes a fixed frame (16), the bottom of which is fixedly connected to the top of the frame (20), and an electric push rod (17) is fixedly connected to the inner top wall of the fixed frame (16).

4. A ladle cover opening device for an LF furnace according to claim 3, characterized in that: The bottom of the electric push rod (17) is fixedly connected to a lifting plate (18), and the bottom of the lifting plate (18) is fixedly connected to an electric arc column (19).

5. A ladle cover opening device for an LF furnace according to claim 1, characterized in that: The drive component includes a bracket (14), the top of which is fixedly connected to the inner top wall of the frame (20), and a motor (15) is fixedly sleeved on the inner wall of the bracket (14). The output end of the motor (15) is fixedly sleeved with a second bevel gear (13) through a coupling.

6. A ladle cover opening device for an LF furnace according to claim 5, characterized in that: The second bevel gear (13) meshes with the first bevel gear (11), and one end of the coupling of the motor (15) is rotatably connected to one side of the connecting block (12).

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