Novel argon sealing structure for bowl part of long nozzle

Abstract

The utility model belongs to the technical field of novel argon sealing structures for long nozzle bowl parts, and particularly relates to a novel argon sealing structure for a long nozzle bowl part, which comprises a long nozzle body, a long nozzle bowl end is arranged at the top of the long nozzle body, an argon inlet pipe is arranged on the outer wall of the long nozzle body, an open hole is formed in the outer wall of the long nozzle body, and the long nozzle bowl end is arranged at the bottom of the long nozzle body. The long nozzle bowl end is arranged at the top of the long nozzle body, the argon sealing dispersion ventilation material is arranged in the long nozzle bowl end, a positioning groove is formed in the top of the long nozzle body, the outer wall of the argon sealing dispersion ventilation material is connected with a positioning block, and the sealing cover is arranged at the top of the long nozzle body. Then the positioning block on the outer wall of the argon sealing dispersion ventilation material is in butt joint with the positioning groove, the argon sealing dispersion ventilation material can be arranged in the bowl end of the long nozzle at the moment, then the sealing cover is connected with the top of the long nozzle body in a sleeving mode, the threaded column penetrates through the through hole and then is connected and locked with the locking nut, and therefore the assembling stability of the argon sealing dispersion ventilation material can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of a new argon seal structure for the bowl part of a long nozzle, and particularly relates to a new argon seal structure for the bowl part of a long nozzle. Background Art

[0002] The long nozzle is a key material connecting the ladle and the tundish in the continuous casting process. Its function is to ensure that the molten steel smoothly flows from the ladle into the tundish during the continuous casting production process, playing a role in isolating air. With the increasing requirements of steel enterprises for quality, especially for some special steel grades, there are strict requirements for the oxygen and nitrogen increase in the molten steel. Therefore, how to seal the bowl part of the long nozzle and prevent air inhalation has become the top priority for every steel enterprise.

[0003] Currently, during the use of the existing new argon seal structure for the bowl part of a long nozzle, it is usually directly assembled on the bowl part of the long nozzle. However, this method may lead to poor stability of the argon seal structure, and thus may affect the argon seal effect of the bowl part of the long nozzle after long-term use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a new argon seal structure for the bowl part of a long nozzle, aiming to solve the problem that during the use of the existing new argon seal structure for the bowl part of a long nozzle, it is usually directly assembled on the bowl part of the long nozzle, but this method may lead to poor stability of the argon seal structure, and thus may affect the argon seal effect of the bowl part of the long nozzle after long-term use.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A new argon seal structure for the bowl part of a long nozzle, including a long nozzle body. A long nozzle bowl end is arranged at the top of the long nozzle body. An argon inlet pipe is arranged on the outer wall of the long nozzle body, and an opening is formed on the outer wall of the long nozzle body.

[0006] An argon seal dispersion permeable material is arranged inside the long nozzle bowl end. A positioning groove is formed at the top of the long nozzle body. A positioning block is connected to the outer wall of the argon seal dispersion permeable material. A sealing cover is arranged at the top of the long nozzle body.

[0007] Preferably, for the new argon seal structure for the bowl part of a long nozzle of the utility model, the number of the positioning grooves and the positioning blocks is four, and the four positioning grooves and the four positioning blocks are annularly distributed.

[0008] Preferably, for the new argon seal structure for the bowl part of a long nozzle of the utility model, the sizes of the positioning block and the positioning groove are adapted to each other.

[0009] Preferably, as a new argon sealing structure for the bowl part of the long nozzle of the utility model, a threaded post is connected to the top of the long nozzle body, through holes are formed on the surface of the sealing cover, and one end of the threaded post is in threaded connection with a locking nut.

[0010] Preferably, as a new argon sealing structure for the bowl part of the long nozzle of the utility model, the threaded posts and the through holes are annularly distributed and the number is the same.

[0011] Preferably, as a new argon sealing structure for the bowl part of the long nozzle of the utility model, one end of the threaded post can penetrate through the sealing cover through the through hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] By arranging a positioning groove at the top of the long nozzle body, then using the positioning block on the outer wall of the argon-sealed diffusing permeable material to dock with the positioning groove, at this time the argon-sealed diffusing permeable material can be arranged inside the bowl end of the long nozzle, and then the sealing cover is sleeved on the top of the long nozzle body, and the threaded post penetrates through the through hole and is connected and locked with the locking nut, so as to improve the assembly stability of the argon-sealed diffusing permeable material. Description of the Drawings

[0014] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 is a three-dimensional exploded structural schematic diagram of the utility model;

[0017] Figure 3 is a front view sectional structural schematic diagram of the utility model;

[0018] Figure 4 is an enlarged structural schematic diagram A of the utility model;

[0019] Figure 5 is an enlarged structural schematic diagram B of the utility model.

[0020] In the figure: 1. Long nozzle body; 2. Bowl end of long nozzle; 3. Argon inlet pipe; 4. Opening; 5. Argon-sealed diffusing permeable material; 6. Positioning groove; 7. Positioning block; 8. Threaded post; 9. Sealing cover; 10. Through hole; 11. Locking nut. Detailed Embodiment

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5 , the present utility model provides the following technical solutions: a new argon seal structure for the bowl part of a long nozzle, including a long nozzle body 1, a long nozzle bowl end 2 is provided at the top of the long nozzle body 1, an argon inlet pipe 3 is provided on the outer wall of the long nozzle body 1, and an opening 4 is provided on the outer wall of the long nozzle body 1;

[0023] An argon seal dispersion permeable material 5 is provided inside the long nozzle bowl end 2, a positioning groove 6 is provided at the top of the long nozzle body 1, a positioning block 7 is connected to the outer wall of the argon seal dispersion permeable material 5, and a sealing cover 9 is provided at the top of the long nozzle body 1;

[0024] It should be noted that an external thread is provided on the outer wall of the argon inlet pipe 3 for connecting to an external pipeline. The argon seal dispersion permeable material 5 is adapted to the size of the long nozzle bowl end 2, and the center of the argon seal dispersion permeable material 5 is a hollow structure.

[0025] Preferably: the number of the positioning grooves 6 and the positioning blocks 7 is four, and the four positioning grooves 6 and the four positioning blocks 7 are annularly distributed. The size between the positioning block 7 and the positioning groove 6 is adapted. A threaded post 8 is connected to the top of the long nozzle body 1, through holes 10 are provided on the surface of the sealing cover 9, one end of the threaded post 8 is threadedly connected with a locking nut 11, the threaded post 8 and the through holes 10 are annularly distributed and have the same number, and one end of the threaded post 8 can penetrate through the sealing cover 9 through the through holes 10.

[0026] During specific use, by providing a positioning groove 6 at the top of the long nozzle body 1, and then using the positioning block 7 on the outer wall of the argon seal dispersion permeable material 5 to dock with the positioning groove 6, at this time the argon seal dispersion permeable material 5 can be arranged inside the long nozzle bowl end 2. Then, the sealing cover 9 is sleeved on the top of the long nozzle body 1, and the threaded post 8 is passed through the through hole 10 and then connected and locked with the locking nut 11, so as to improve the assembly stability of the argon seal dispersion permeable material 5.

[0027] It should be noted that the main materials of the argon seal dispersion permeable material 5 are white corundum and mullite as aggregates, and a small amount of calcined alumina is added as fine powder, and the binder is aluminum dihydrogen phosphate solution.

[0028] It should be noted that the argon-sealed dispersion permeable material 5 is manufactured as follows: First, the materials are evenly stirred by a granulator, and then the argon-sealed dispersion permeable material 5 and the aluminum-carbon material of the long nozzle body 1 are filled according to the isostatic pressing process of the three major components. The argon gas inlet pipe 3 adopts the hot-melt lost foam process and is distributed at the bowl position that meets the design requirements, so that the argon-sealed dispersion permeable material 5 and the long nozzle body 1 are integrally formed. Then, through high-temperature treatment, the hot-melt mold burns out and the argon gas inlet pipe 3 flows out;

[0029] It should be noted that the blank is formed by a cold isostatic press according to the above production process, then dried, the hot-melt mold is burned out, and then glazed on the surface and fired at high temperature.

[0030] Working principle: First, a positioning groove 6 is opened at the top of the long nozzle body 1, and then the positioning block 7 on the outer wall of the argon-sealed dispersion permeable material 5 is docked with the positioning groove 6. At this time, the argon-sealed dispersion permeable material 5 can be arranged inside the bowl end 2 of the long nozzle. Then, the sealing cover 9 is sleeved on the top of the long nozzle body 1, and the threaded column 8 passes through the through hole 10 and is connected and locked with the locking nut 11, so as to improve the assembly stability of the argon-sealed dispersion permeable material 5.

[0031] 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 recorded 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 within the protection scope of the present invention.

Claims

1. A novel argon seal structure for a shroud bowl, comprising a shroud body (1), characterized in that: A shroud bowl end (2) is provided on the top of the shroud body (1), an argon gas inlet pipe (3) is provided on the outer wall of the shroud body (1), and an opening (4) is provided on the outer wall of the shroud body (1); An argon-sealed diffused air-permeable material (5) is disposed inside the long shroud bowl end (2), a positioning groove (6) is provided on the top of the long shroud body (1), a positioning block (7) is connected to the outer wall of the argon-sealed diffused air-permeable material (5), and a sealing cover (9) is disposed on the top of the long shroud body (1).

2. A novel argon seal structure for a long shroud bowl according to claim 1, characterized in that: The number of the positioning grooves (6) and positioning blocks (7) is four, and the four positioning grooves (6) and the four positioning blocks (7) are distributed in a ring shape.

3. A novel argon seal structure for a long shroud bowl according to claim 1, characterized in that: The dimensions of the positioning block (7) and the positioning groove (6) are matched.

4. A novel argon seal structure for a long shroud bowl according to claim 1, characterized in that: A threaded column (8) is connected to the top of the long shroud body (1), a through hole (10) is provided on the surface of the sealing cover (9), and a locking nut (11) is threadedly connected to one end of the threaded column (8).

5. A novel argon seal structure for a long shroud bowl according to claim 4, characterized in that: The threaded columns (8) and the through holes (10) are distributed in a ring shape and are the same in number.

6. A novel argon seal structure for a long shroud bowl according to claim 4, characterized in that: One end of the threaded column (8) can penetrate the sealing cover (9) through the through hole (10).

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