Melting furnace with liquid leakage prevention sealing structure

Abstract

The utility model relates to the technical field of melting furnaces, in particular to a melting furnace with liquid-leakage-proof sealing structures, which comprises a melting furnace body, a melting cover is mounted at the upper end of the melting furnace body in a threaded manner, a cylinder is fixedly mounted at the lower end of the melting cover, two liquid-leakage-proof sealing structures are arranged on the circumferential surface of the cylinder, and each liquid-leakage-proof sealing structure comprises a sealing element. The two sealing pieces can be attached to the inner wall of the melting furnace body, each sealing piece is composed of a plurality of sealing blocks, the side wall of each sealing block is provided with adhesive, and by arranging the liquid leakage prevention sealing structure, due to the fact that the interior of the melting furnace body can generate high temperature in the using process, and the sealing blocks made of silicon carbide blocks are not prone to falling off when facing the high temperature. When the sealing piece is heated, certain expansion occurs, then the multiple sealing blocks of the sealing piece are expanded and overlapped in the circumferential direction in the high-temperature environment, even radial pressure stress can be applied to the inner wall of the melting furnace body, the dynamic sealing effect that the more heat is, the tighter the heat is is, and liquid leakage is avoided.

Description

A melting furnace with a leak-proof sealing structure Technical Field

[0001] This utility model relates to the field of melting furnace technology, and in particular to a melting furnace with a leak-proof sealing structure. Background Technology

[0002] A melting furnace is a device used to heat materials to a molten state. It is made of refractory materials, used to hold metallic materials, withstand high temperatures and reduce heat loss, and protect the furnace structure and the surrounding environment. It is mainly used for smelting and refining molten iron to produce various grades of steel, such as carbon steel and alloy steel. By controlling the composition and temperature during the smelting process, the quality and performance of steel can be improved.

[0003] A search of Chinese patent publication number "CN221444825U" reveals "An electrode cover for a plasma melting furnace that can reduce leakage". This melting furnace has a first sealing gasket made of phlogopite material, which provides good insulation and sealing performance, can be used for a long time in extreme environments with high temperature and high pressure, has fireproof function, is easy to obtain and has low cost, and effectively enhances the sealing effect.

[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. The molten cap achieves the sealing effect through phlogopite material, but phlogopite is prone to thermal stress at high temperatures due to the difference in thermal expansion coefficient. The sealing gasket lacks the ability to alleviate the stress concentration caused by the difference in thermal expansion, thus it has certain defects, insufficient reliability, and needs to be improved. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a melting furnace with a leak-proof sealing structure, which solves the technical problem of insufficient reliability of existing melting covers.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A melting furnace with a leak-proof sealing structure includes a melting furnace body, a melting cover threadedly installed at the upper end of the melting furnace body, and a column fixedly installed at the lower end of the melting cover;

[0010] The cylindrical body has two leak-proof sealing structures on its circumferential surface.

[0011] The leak-proof sealing structure includes sealing elements. Two sealing elements can fit against the inner wall of the melting furnace body. Each sealing element is composed of multiple sealing blocks. Each sealing block has an adhesive on its side wall. High-temperature ceramics are placed between each pair of adhesives. Each sealing block is made of silicon carbide blocks. Each adhesive is made of aluminum phosphate-based adhesive.

[0012] Preferably, the furnace body has a groove inside, and a sealing ring is fixedly installed at the lower end of the melting cover, with the sealing ring embedded inside the groove.

[0013] Preferably, the upper end of the molten cap is provided with a feed pipe, the inside of the feed pipe is provided with a conical component, the conical surface of the conical component is fixedly mounted with a bracket, and the bracket is fixedly mounted with the inner wall of the feed pipe.

[0014] Preferably, the circumferential surface of the melting furnace body is provided with a discharge hopper, and the interior of the melting furnace body is provided with a discharge trough, which is connected to the discharge hopper.

[0015] (III) Beneficial Effects

[0016] Firstly, by setting up a leak-proof sealing structure, the furnace body itself generates high temperatures during use. When the silicon carbide sealing blocks are exposed to high temperatures, they will expand to a certain extent. This allows multiple sealing blocks to expand and overlap in the circumferential direction under high temperature conditions, applying uniform radial compressive stress to the inner wall of the furnace body, forming a dynamic sealing effect of "the hotter it gets, the tighter it becomes". At the same time, excessive expansion at high temperatures may lead to jamming or stress cracking. The thermal expansion coefficient of high-temperature ceramics is slightly higher than that of silicon carbide, forming an "intermediate transition layer" at the joint to buffer the expansion difference and prevent stress concentration. Therefore, it can achieve sealing while also avoiding the problem of breakage.

[0017] Secondly, due to the temperature difference between the added solution and the solution inside the furnace body, solution splashing is prone to occur. By setting a conical part inside the feed pipe, the shielding area is increased, reducing solution splashing into the furnace body and improving reliability. Attached Figure Description

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 is a three-dimensional structural diagram of this utility model;

[0020] Figure 2 is a three-dimensional exploded view of the connection structure of this utility model;

[0021] Figure 3 is an exploded view of the molten cap connection structure of this utility model;

[0022] Figure 4 is an exploded view of the sealing component connection of this utility model;

[0023] Figure 5 is a cross-sectional view of the fusion cap of this utility model.

[0024] Legend: 11. Furnace body; 12. Furnace cover; 13. Column; 14. Seal; 15. Sealing block; 16. Adhesive; 17. High-temperature ceramic; 18. Groove; 19. Sealing ring; 21. Feed pipe; 22. Support; 23. Conical part; 24. Discharge hopper; 25. Discharge trough. Detailed Implementation

[0025] This application provides a melting furnace with a leak-proof sealing structure, effectively solving the technical problem of insufficient reliability of existing melting covers. By setting up a leak-proof sealing structure, the melting furnace body itself generates high temperatures during use. When the silicon carbide sealing block is exposed to high temperatures, it will expand to a certain extent. This allows multiple sealing blocks to expand and overlap in the circumferential direction under high temperature conditions, applying uniform radial compressive stress to the inner wall of the melting furnace body, forming a dynamic sealing effect of "the hotter it gets, the tighter it becomes." At the same time, excessive expansion at high temperatures may lead to jamming or stress cracking. The thermal expansion coefficient of high-temperature ceramics is slightly higher than that of silicon carbide, forming an "intermediate transition layer" at the joint, buffering the expansion difference and preventing stress concentration. Therefore, it can achieve sealing while avoiding the problem of breakage. In addition, since there is a temperature difference between the added solution and the solution inside the melting furnace body, the problem of solution splashing is prone to occur. By setting a conical part inside the feed pipe, the shielding area is increased, reducing solution splashing into the melting furnace body and improving reliability.

[0026] Example

[0027] As shown in Figures 1-5, the technical solution in this application embodiment effectively solves the technical problem of insufficient reliability of existing fused caps. The overall idea is as follows:

[0028] To address the problems existing in the prior art, this utility model provides a melting furnace with a leak-proof sealing structure, including a melting furnace body 11, a melting cover 12 threadedly installed at the upper end of the melting furnace body 11, and a column 13 fixedly installed at the lower end of the melting cover 12;

[0029] Two leak-proof sealing structures are provided on the circumferential surface of column 13;

[0030] The leak-proof sealing structure includes sealing elements 14. Two sealing elements 14 can fit against the inner wall of the melting furnace body 11. Each sealing element 14 is composed of multiple sealing blocks 15. Each sealing block 15 has an adhesive 16 on its side wall. High-temperature ceramics 17 are provided between each pair of adhesive 16. Each sealing block 15 is made of silicon carbide (silicon carbide has a melting point of about 2700℃, has a certain coefficient of thermal expansion, and excellent thermal shock resistance, making it suitable for the lining of the melting furnace body 11 or high-temperature mechanical parts). Each adhesive 16 is made of aluminum phosphate-based adhesive (aluminum phosphate-based adhesive is an inorganic high-temperature adhesive with aluminum phosphate as the main component, which has excellent high-temperature resistance and chemical stability and can work stably at a high temperature of 1600℃).

[0031] By setting up a leak-proof sealing structure, since the inside of the melting furnace body 11 itself generates high temperatures during use, and the sealing block 15 made of silicon carbide block will expand to a certain extent when exposed to high temperatures, the sealing element 14 can be formed by multiple sealing blocks 15 expanding and overlapping in the circumferential direction under high temperature environment, which will apply uniform radial compressive stress to the inner wall of the melting furnace body 11, forming a dynamic sealing effect of "the hotter it gets, the tighter it gets". At the same time, excessive expansion at high temperature may cause jamming or stress cracking. The thermal expansion coefficient of the high temperature ceramic 17 is slightly higher than that of silicon carbide, forming an "intermediate transition layer" at the joint, buffering the expansion difference and preventing stress concentration. Therefore, it can achieve sealing while avoiding the problem of breakage.

[0032] The furnace body 11 has a groove 18 inside, and a sealing ring 19 is fixedly installed at the lower end of the melting cover 12. The sealing ring 19 is embedded in the groove 18.

[0033] By setting the groove 18 and the sealing ring 19, an additional layer of sealing can be added to the leak-proof sealing structure, thereby improving reliability.

[0034] The upper end of the molten cap 12 is provided with a feed pipe 21, and a conical part 23 is provided inside the feed pipe 21. A bracket 22 is fixedly installed on the conical surface of the conical part 23, and the bracket 22 is fixedly installed on the inner wall of the feed pipe 21.

[0035] Because there is a temperature difference between the added solution and the solution inside the furnace body 11, the solution is prone to splashing. By setting a conical part 23 inside the feed pipe 21, the solution entering the furnace body 11 through the feed pipe 21 can avoid splashing and improve reliability.

[0036] A discharge hopper 24 is provided on the circumferential surface of the melting furnace body 11, and a discharge trough 25 is provided inside the melting furnace body 11, which communicates with the discharge hopper 24.

[0037] By setting up the discharge trough 25 and the discharge hopper 24, the solution can be discharged through the discharge trough 25 and the discharge hopper 24.

[0038] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A melting furnace with a leak-proof sealing structure, comprising a melting furnace body (11), wherein a melting cover (12) is threadedly installed at the upper end of the melting furnace body (11), and a column (13) is fixedly installed at the lower end of the melting cover (12), characterized in that; The column (13) has two anti-leakage sealing structures on its circumferential surface; the anti-leakage sealing structure includes a sealing element (14), the two sealing elements (14) can fit against the inner wall of the melting furnace body (11), the two sealing elements (14) are composed of multiple sealing blocks (15), each sealing block (15) has an adhesive colloid (16) on its side wall, and each adhesive colloid (16) has a high-temperature ceramic (17) between each pair of them; wherein, each sealing block (15) is made of silicon carbide block, and each adhesive colloid (16) is made of aluminum phosphate-based adhesive.

2. The melting furnace with a leak-proof sealing structure as described in claim 1, characterized in that, The furnace body (11) has a groove (18) inside; and a sealing ring (19) is fixedly installed at the lower end of the melting cover (12).

3. The melting furnace with a leak-proof sealing structure as described in claim 2, characterized in that, The sealing ring (19) is embedded in the groove (18); wherein the upper end of the molten cap (12) is provided with a feed pipe (21).

4. The melting furnace with a leak-proof sealing structure as described in claim 3, characterized in that, The feed pipe (21) is provided with a tapered part (23); wherein, a bracket (22) is fixedly installed on the tapered surface of the tapered part (23).

5. The melting furnace with a leak-proof sealing structure as described in claim 4, characterized in that, The bracket (22) is fixedly installed on the inner wall of the feed pipe (21); wherein, the circumferential surface of the melting furnace body (11) is provided with a discharge hopper (24).

6. The melting furnace with a leak-proof sealing structure as described in claim 5, characterized in that, The melting furnace body (11) has a discharge trough (25) inside; wherein the discharge trough (25) is connected to the discharge hopper (24).

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