Water-cooling combined type fused alumina zirconia electric arc furnace cover structure
By setting an annular groove and annular block on the inside of the zirconium corundum arc furnace cover and using an elastic adapter to fill the gap between the electrode column and the electrode hole, the poor sealing problem caused by the furnace cover design in the prior art is solved, and more efficient heat retention and smoke prevention are achieved.
Patent Information
- Application Number
- CN202421755575.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The furnace cover design of existing steelmaking arc furnaces or mineral thermal arc furnaces leads to a gap between the electrode holes and the electrodes, resulting in poor sealing in the furnace and easily leads to heat loss.
A water-cooled combined zirconium corundum arc furnace furnace cover structure is designed. By setting an annular groove and an annular block on the inside of the furnace cover, and installing a mounting ring and multiple adapter sheets on the outside of the electrode column, the elastic properties of the adapter sheet are used to fit the outside of the electrode column. The limiting block is used for the limiting effect, thereby filling the gap between the electrode column and the electrode hole and improving sealing.
It effectively improves the sealing of the arc furnace, reduces heat loss, and avoids flue gas spillage, and improves the retention effect of the temperature in the furnace.
Smart Images
Figure CN222993492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric arc furnace lids, in particular to a water-cooled combined zirconia corundum electric arc furnace lid structure. Background Technique
[0002] Zirconia corundum is smelted at a high temperature above 2000 °C in an electric arc furnace with alumina and zirconia as raw materials. In the preparation thereof, an electric arc furnace is generally required. An electric arc furnace is an electric furnace that uses the high temperature generated by an electrode arc to melt ores and metals. When a gas discharge forms an arc, the energy is very concentrated, and the temperature in the arc zone is above 3000 °C. For melting metals, the electric arc furnace has greater process flexibility than other steelmaking furnaces, can effectively remove impurities such as sulfur and phosphorus, the furnace temperature is easy to control, the equipment occupies a small area, and is suitable for the melting of high-quality alloy steel.
[0003] In the prior art, for a steelmaking electric arc furnace or a submerged arc furnace, in order to facilitate the electrode to pass through the furnace lid and move up and down for adjustment, there is a certain gap between the electrode hole on the furnace lid and the electrode located therein, which will result in poor sealing inside the furnace and easy heat loss. Therefore, those skilled in the art propose a water-cooled combined zirconia corundum electric arc furnace lid structure to solve the above problems. Content of the Utility Model
[0004] In order to make up for the above deficiencies, the utility model provides a water-cooled combined zirconia corundum electric arc furnace lid structure, aiming to improve the problems in the prior art that for a steelmaking electric arc furnace or a submerged arc furnace, in order to facilitate the electrode to pass through the furnace lid and move up and down for adjustment, there is a certain gap between the electrode hole on the furnace lid and the electrode located therein, which will result in poor sealing inside the furnace and easy heat loss.
[0005] To achieve the above object, the utility model provides the following technical solution: A water-cooled combined zirconia corundum electric arc furnace lid structure, including an electric arc furnace body and three electrode columns. A furnace lid is arranged on the top of the electric arc furnace body. A top block is fixedly connected to the top of the furnace lid. Three electrode holes are opened inside the top block. An installation ring is sleeved outside the electrode column. A plurality of connecting pieces are arranged on the top of the installation ring. A limiting block is fixedly connected to the top of the connecting piece. A heat preservation component is arranged inside the furnace lid, and the heat preservation component is used to ensure that the temperature inside the electric arc furnace body is not easily lost.
[0006] Further, the heat preservation component includes an annular groove, and the annular groove is opened inside the furnace lid.
[0007] Further, an annular block is fixedly connected to the top of the electric arc furnace body, and the inner side of the annular groove is attached to the outer side of the annular block.
[0008] Further, an annular frame is fixedly connected to the outside of the electric arc furnace body, and the outside of the furnace lid is attached to the inner side of the annular frame.
[0009] Further, two clamping grooves are formed at the top of the annular frame.
[0010] Further, two clamping blocks are fixedly connected to the outer side of the furnace cover, and the outer sides of the clamping blocks are clamped inside the clamping grooves.
[0011] Further, the outer side of the connecting piece is attached to the inner side of the electrode hole, and the outer side of the limiting block is attached to the top of the top block.
[0012] Further, two fixing blocks are arranged on both sides of the top of the furnace cover, and fixing columns are fixedly connected to the adjacent sides of the two fixing blocks.
[0013] The utility model has the following beneficial effects:
[0014] 1. In the utility model, when the electrode post is inserted, it passes through the mounting ring and drives multiple connecting pieces to move downward. The connecting pieces are elastic parts and can contract and fit on the outer side of the electrode post. The limiting block can play a limiting role, so that the gap between the electrode post and the electrode hole can be filled, thereby improving the sealing performance.
[0015] 2. In the utility model, by placing the furnace cover on the top of the electric arc furnace body and aligning the two clamping blocks with the two clamping grooves, the furnace cover can be stably assembled with the electric arc furnace body. Moreover, the cooperation between the edge of the furnace cover and the annular groove, annular block and annular frame can prevent the heat inside the electric arc furnace body from easily escaping and can also prevent the flue gas inside the electric arc furnace body from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a perspective view of a water-cooled combined zirconia corundum electric arc furnace cover structure proposed by the utility model;
[0017] Figure 2 is a schematic diagram of the furnace cover structure of a water-cooled combined zirconia corundum electric arc furnace cover structure proposed by the utility model;
[0018] Figure 3 is a schematic diagram of the clamping block structure of a water-cooled combined zirconia corundum electric arc furnace cover structure proposed by the utility model;
[0019] Figure 4 is a schematic diagram of the connecting piece structure of a water-cooled combined zirconia corundum electric arc furnace cover structure proposed by the utility model.
[0020] Legend:
[0021] 1. Arc furnace body; 2. Furnace cover; 3. Top block; 4. Electrode hole; 5. Electrode column; 6. Mounting ring; 7. Connecting piece; 8. Limiting block; 9. Annular groove; 10. Annular block; 11. Clamping block; 12. Annular frame; 13. Card slot; 14. Fixed block; 15. Fixed column. Specific embodiments
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0023] Referring to Figures 1 - 3 , an embodiment provided by the present invention: a water-cooled combined zirconia corundum arc furnace cover structure, including an arc furnace body 1 and three electrode columns 5. A furnace cover 2 is provided at the top of the arc furnace body 1. A top block 3 is fixedly connected to the top of the furnace cover 2. Three electrode holes 4 are opened inside the top block 3. A mounting ring 6 is sleeved outside the electrode column 5. A plurality of connecting pieces 7 are provided at the top of the mounting ring 6. A limiting block 8 is fixedly connected to the top of the connecting piece 7. A heat preservation component is provided inside the furnace cover 2, and the heat preservation component is used to ensure that the temperature inside the arc furnace body 1 is not easily lost. The outside of the connecting piece 7 fits with the inside of the electrode hole 4, and the outside of the limiting block 8 fits with the top of the top block 3. The mounting ring 6 is stuck inside the electrode hole 4. When the electrode column 5 is inserted, it will pass through the mounting ring 6 and drive a plurality of connecting pieces 7 to move downward. The connecting piece 7 is an elastic part and can contract and fit on the outside of the electrode column 5. The limiting block 8 can play a limiting effect, so that the gap between the electrode column 5 and the electrode hole 4 can be filled, thereby improving the sealing performance.
[0024] Referring to Figures 2 - 4, The heat insulation assembly includes an annular groove 9 which is opened on the inner side of the furnace cover 2. A ring block 10 is fixedly connected to the top of the electric arc furnace body 1. The inner side of the annular groove 9 is in contact with the outer side of the ring block 10. An annular frame 12 is fixedly connected to the outer side of the electric arc furnace body 1. The outer side of the furnace cover 2 is in contact with the inner side of the annular frame 12. Two clamping grooves 13 are opened at the top of the annular frame 12. Two clamping blocks 11 are fixedly connected to the outer side of the furnace cover 2. The outer sides of the clamping blocks 11 are clamped inside the clamping grooves 13. Two fixing blocks 14 are arranged on both sides of the top of the furnace cover 2. A fixing column 15 is fixedly connected to the adjacent sides of the two fixing blocks 14. Hang the two fixing columns 15 with a hook, place the furnace cover 2 on the top of the electric arc furnace body 1, and align the two clamping blocks 11 with the two clamping grooves 13. In this way, the furnace cover 2 and the electric arc furnace body 1 can be stably assembled together. Moreover, the cooperation between the edge of the furnace cover 2, the annular groove 9, the ring block 10 and the annular frame 12 can prevent the heat inside the electric arc furnace body 1 from easily escaping and can also prevent the flue gas inside the electric arc furnace body 1 from overflowing.
[0025] Working principle: First, the two fixing columns 15 can be hung with a hook, place the furnace cover 2 on the top of the electric arc furnace body 1, and align the two clamping blocks 11 with the two clamping grooves 13. In this way, the furnace cover 2 and the electric arc furnace body 1 can be stably assembled together. Moreover, the cooperation between the edge of the furnace cover 2, the annular groove 9, the ring block 10 and the annular frame 12 can prevent the heat inside the electric arc furnace body 1 from easily escaping and can also prevent the flue gas inside the electric arc furnace body 1 from overflowing. In addition, the installation ring 6 is stuck inside the electrode hole 4. When the electrode column 5 is inserted, it will pass through the installation ring 6 and drive multiple connecting pieces 7 to move downward. The connecting pieces 7 are elastic parts and can contract and fit on the outer side of the electrode column 5. The limiting block 8 can play a limiting role. In this way, the gap between the electrode column 5 and the electrode hole 4 can be filled, thereby improving the sealing performance.
[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A water-cooled combined zirconium corundum electric arc furnace cover structure, comprising an electric arc furnace body (1) and three electrode columns (5), characterized in that: A furnace cover (2) is arranged on the top of the electric arc furnace body (1), a top block (3) is fixedly connected to the top of the furnace cover (2), three electrode holes (4) are opened inside the top block (3), a mounting ring (6) is sleeved on the outside of the electrode column (5), a plurality of connecting pieces (7) are arranged on the top of the mounting ring (6), and a limit block (8) is fixedly connected to the top of the connecting piece (7), and a heat insulation component is arranged on the inner side of the furnace cover (2), and the heat insulation component is used to ensure that the temperature inside the electric arc furnace body (1) is not easily lost.
2. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 1 is characterized in that: The heat-insulating component comprises an annular groove (9), and the annular groove (9) is arranged on the inner side of the furnace cover (2).
3. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 2 is characterized in that: An annular block (10) is fixedly connected to the top of the electric arc furnace body (1), and the inner side of the annular groove (9) is in contact with the outer side of the annular block (10).
4. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 1, characterized in that: The outer side of the electric arc furnace body (1) is fixedly connected to an annular frame (12), and the outer side of the furnace cover (2) is in contact with the inner side of the annular frame (12).
5. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 4 is characterized in that: Two slots (13) are provided on the top of the annular frame (12).
6. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 1, characterized in that: Two clamping blocks (11) are fixedly connected to the outer side of the furnace cover (2), and the outer sides of the clamping blocks (11) are clamped on the inner sides of the clamping grooves (13).
7. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 1, characterized in that: The outer side of the connecting piece (7) is in contact with the inner side of the electrode hole (4), and the outer side of the limiting block (8) is in contact with the top of the top block (3).
8. The water-cooled combined zirconium corundum electric arc furnace cover structure according to claim 1, characterized in that: Two fixing blocks (14) are provided on both sides of the top of the furnace cover (2), and fixing columns (15) are fixedly connected to adjacent sides of the two fixing blocks (14).