A clamping structure and converter slag-blocking cap

By using a clamping structure and limiting design, the problem of converter slag-blocking cap falling off at high temperatures was solved, achieving stable clamping of the slag-blocking assembly and ensuring a stable slag discharge process.

CN224430625UActive Publication Date: 2026-06-30LIUZHOU IRON & STEEL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIUZHOU IRON & STEEL
Filing Date
2025-06-12
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Converter slag caps used at high temperatures are prone to falling off due to temperature differences, affecting the stable slag discharge process.

Method used

A clamping structure was designed, including a bearing component and a fixing component. The rotating disk drives the sliding groove and sliding rod to achieve a stable clamping of the slag-blocking component. A limiting disk and a threaded groove are set on the slag-blocking component to prevent it from falling off.

Benefits of technology

This effectively prevents the slag-blocking components from falling off due to insufficient resistance in high-temperature environments, ensuring a stable slag discharge process and improving operational reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of slag-blocking cap technology, specifically a clamping structure and a converter slag-blocking cap, comprising: a supporting component including a converter and a tapping pipe located at one end of the converter; a fixing component including a rotating disk located at the end of the tapping pipe; the supporting component also includes molten steel located inside the converter, with a slag layer above the molten steel; a tapping port is opened on the inner side of the converter, and the tapping port is inclined; the fixing component also includes a connecting plate located on the outer side of the tapping pipe, with a sliding groove opened on the inner side of the connecting plate. The beneficial effect of this utility model is that the sliding rod drives the outer clamping plate to move evenly inward, forming a contraction, and clamping and fixing the slag-blocking component to prevent it from falling off.
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Description

Technical Field

[0001] This utility model relates to the field of slag-blocking cap technology, and in particular to a clamping structure and a converter slag-blocking cap. Background Technology

[0002] Converter slag control typically employs measures such as slag-blocking caps, slag-blocking balls, slag-blocking plugs, and slag-blocking markers. With technological advancements, pneumatic slag blocking, sliding plate slag blocking, and infrared slag detection auxiliary systems have emerged. Among these, the sliding plate slag blocking method combined with slag detection has a slag discharge rate fluctuation range of 2–5 kg per ton of steel and is currently the most stable and reliable slag blocking method. The sliding plate slag blocking process mainly involves closing the sliding plate before tapping. When the converter tilts to a position of 70°–80°, all the slag has floated to the surface, and the sliding plate opens to begin tapping. At the end of tapping, when the infrared slag detection system detects slag, it sends a command signal to close the sliding plate, which then automatically closes.

[0003] In recent years, with changes in the global steel market, the demand for high-end steel has been increasing. At the same time, the output of ordinary steel in my country exceeds the demand. However, when the slag-blocking cap is in use, due to the high temperature inside the converter, the temperature difference inside is large. If the slag-blocking cap is not installed firmly, it will fall off. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a clamping structure, comprising a bearing component, including a converter and a steel tapping pipe disposed at one end of the converter;

[0006] The fixing component includes a rotating disk located at the end of the steel pipe.

[0007] As a preferred embodiment of the clamping structure of this utility model, the bearing component further includes molten steel disposed inside the converter, and a layer of steel slag is disposed above the molten steel.

[0008] As a preferred embodiment of the clamping structure of this utility model, the inner side of the converter is provided with a steel outlet, and the steel outlet is inclined.

[0009] As a preferred embodiment of the clamping structure of this utility model, the fixing component further includes a connecting plate disposed on the outside of the steel pipe, and the inner side of the connecting plate is provided with a sliding groove.

[0010] In a preferred embodiment of the clamping structure of this utility model, the connecting plates are arranged in a circumferential array on the outside of the steel pipe.

[0011] As a preferred embodiment of the clamping structure of this utility model, the outer side of the rotating disk is provided with an arc panel, the outer side of the rotating disk is provided with a clamping plate, the arc panel is arranged in a circumferential array on the outer side of the rotating disk, and the inner side of the rotating disk is provided with an arc groove.

[0012] As a preferred embodiment of the clamping structure of this utility model, a sliding rod is provided on the inner side of the arc-shaped groove, and a sliding block is provided at one end of the sliding rod, the sliding block sliding on the inner side of the sliding groove.

[0013] The beneficial effects of the clamping structure of this utility model are as follows: through the transverse groove of the sliding groove, the sliding block and the sliding rod move inward. After the sliding rod moves, the sliding rod drives the outer clamping plate to move inward evenly, forming a contraction, and clamping and fixing the slag-blocking assembly to prevent it from falling off.

[0014] Another objective of this invention is to provide a converter slag-blocking cap, which aims to solve the problem.

[0015] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a converter slag-blocking cap, which includes a clamping structure; and a slag-blocking assembly, which includes a slag-blocking column disposed inside the rotating disk.

[0016] As a preferred embodiment of the converter slag-blocking cap of this utility model, the slag-blocking assembly further includes a limiting plate disposed at one end of the slag-blocking column, and the inner side of the limiting plate is provided with an installation hole.

[0017] As a preferred embodiment of the converter slag-blocking cap of this utility model, a threaded groove is provided on the inner side of the mounting hole.

[0018] The beneficial effects of this utility model of converter slag-blocking cap are as follows: when there is a layer of steel slag adhering to the inner wall of the tapping hole, the glass water is used for adhesion, which solves the problem that the slag-blocking component does not have enough resistance to the inner wall of the tapping hole during installation, causing it to fall off before tapping and fail to block the slag in front. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a side view of the overall components in this utility model.

[0021] Figure 2 This is a perspective view of the overall components in this utility model.

[0022] Figure 3 This is a partial structural illustration of the present invention.

[0023] Figure 4 This is a cross-sectional view of the fixing component in this utility model.

[0024] Figure 5 This is a diagram illustrating the slag-blocking component of this utility model. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0028] Example 1

[0029] Reference Figure 1 This is the first embodiment of the present invention. This embodiment provides a clamping structure, including a bearing component 1, which includes a converter 11 and a tapping pipe 12 disposed at one end of the converter 11; and a fixing component 2, which includes a rotating disk 21 disposed at the end of the tapping pipe 12. When the slag-blocking component 3 is embedded into the inside of the tapping port 121 in the tapping pipe 12, the rotating disk 21 drives the subsequent components to stabilize the slag-blocking component 3.

[0030] The bearing assembly 1 also includes molten steel 112 located inside the converter 11. A layer of steel slag 111 is provided above the molten steel 112. When working with the molten steel, the molten steel inside the converter 11 is put in or poured out by flipping the top cover above the converter 11. A sealing element is provided on the outside of the top cover to prevent the temperature inside from losing too quickly.

[0031] A tapping port 121 is provided on the inner side of the converter 11. The tapping port 121 is inclined. Both the tapping port 121 on the inner side of the converter 11 and the tapping pipe 12 on the outer side of the converter 11 are inclined upward. This inclined setting makes it difficult for the slag layer 111 in the converter 11 to splash out, and it can be made to flow back into the converter 11 in a backflow form.

[0032] Usage process: When tapping steel, molten steel 112 flows out from the inclined tapping port 121, and the slag layer 111 floats to the surface of the molten steel due to its lower density; by rotating the rotating disk 21, the secondary fixation of the slag blocking component 3 is canceled, so that the slag blocking component 3 is aligned above the tapping port 121, preventing the slag layer 111 from flowing out with the molten steel 112.

[0033] Example 2

[0034] Reference Figures 1-4 This is the second embodiment of the present invention. Unlike the previous embodiment, it further includes a connecting plate 23 disposed on the outside of the steel pipe 12, and a sliding groove 231 is formed on the inner side of the connecting plate 23. The connecting plates 23 are arranged in a circumferential array on the outside of the steel pipe 12. Through the sliding groove 231 formed on the inner side of the connecting plate 23, and the sliding groove 231 is a linear track, when the sliding block 221 rotates, the sliding block 221 moves in a straight line through the track of the sliding groove 231.

[0035] The outer side of the rotating disk 21 is provided with an arc panel 211, and the outer side of the rotating disk 21 is provided with a clamping plate. The arc panel 211 is arranged in a circumferential array on the outer side of the rotating disk 21, and the inner side of the rotating disk 21 is provided with an arc groove 2111. The inner side of the arc groove 2111 is provided with a sliding rod 22, and one end of the sliding rod 22 is provided with a sliding block 221. The sliding block 221 slides on the inner side of the sliding groove 231. When the rotating disk 21 rotates, and the arc panel 211 on the outer side of the rotating disk 21 drives the sliding rod 22 to rotate, the arc groove 2111 on the inner side of the arc panel 211 interferes with and prevents the sliding block 221 from driving the sliding rod 22 to retract inward and causing jamming.

[0036] Usage process: After the slag-blocking assembly 3 is installed and embedded in the steel outlet 121, the rotating disk 21 is rotated, which drives the outer arc panel 211 to rotate. After the arc panel 211 rotates, the arc panel 211 drives the sliding rod 22 inside the arc groove 2111 to move. The sliding rod 22 drives the lower sliding block 221 to slide on the sliding groove 231 in the connecting plate 23. At this time, through the transverse groove of the sliding groove 231, the sliding block 221 and the sliding rod 22 move inward. After the sliding rod 22 moves, the sliding rod 22 drives the outer clamping plate to move inward evenly, forming a contraction and clamping and fixing the slag-blocking assembly 3.

[0037] Example 3

[0038] Reference Figures 1-4 This is the third embodiment of the present invention, which further provides a converter slag-blocking cap. It includes a slag-blocking assembly 3, comprising a slag-blocking column 31 disposed inside the rotating disk 21. The slag-blocking column 31 is a frustum-shaped cylinder made of relatively hard steel, with an upper diameter of 140 mm, a lower diameter of 170 mm, and a height of 160 mm, forming an inverted cone shape, and is inserted into the outside of the taphole 121 by means of a smaller upper diameter and a larger lower diameter.

[0039] The slag-blocking assembly 3 also includes a limiting plate 32 located at one end of the slag-blocking column 31. The inner side of the limiting plate 32 has an installation hole 321. The inner side of the installation hole 321 has a threaded groove. If the slag-blocking assembly 3 cannot fall off during use due to excessive adhesion, high-temperature sintering, or adhesion of the slag layer 111, the furnace can be shaken upright, and the threaded rod can be threaded into the installation hole 321 inside the limiting plate 32. Then, by pulling it outward forcefully, the slag-blocking assembly 3 can be removed.

[0040] The limiting plate 32 installed at one end of the slag-blocking component 3 can prevent the diameter of the tapping port 121 from being larger than the slag-blocking column 31 after the tapping port 121 is eroded, which would cause the slag-blocking component 3 to slide into the inner hole of the sliding plate during the process of feeding scrap steel and adding iron in the furnace, thus blocking the sliding plate switch.

[0041] Usage process: Before using the slag-blocking component 3, brush a layer of glass water on the outside. When the outside comes into contact with the inner wall of the steel outlet 121, and there is a layer of steel slag 111 attached to the inner wall of the steel outlet 121, the glass water will adhere to it, which solves the problem that the slag-blocking component 3 does not have enough resistance to the inner wall of the steel outlet 121 during installation, which causes it to fall before steel is tapped and cannot block the slag in front.

[0042] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0043] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0044] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A clamping structure, characterized in that: include, The supporting component (1) includes a converter (11) and a tapping pipe (12) located at one end of the converter (11); The fixing component (2) includes a rotating disk (21) located at the end of the steel pipe (12).

2. The clamping structure as described in claim 1, characterized in that: The supporting component (1) also includes molten steel (112) disposed inside the converter (11), and a layer of steel slag (111) is disposed above the molten steel (112).

3. The clamping structure as described in claim 2, characterized in that: The converter (11) has a tapping port (121) on its inner side, and the tapping port (121) is inclined.

4. The clamping structure as described in claim 3, characterized in that: The fixing component (2) also includes a connecting plate (23) located on the outside of the steel pipe (12), and a sliding groove (231) is provided on the inner side of the connecting plate (23).

5. The clamping structure as described in claim 4, characterized in that: The connecting plate (23) is arranged in a circumferential array on the outside of the steel pipe (12).

6. The clamping structure as described in claim 5, characterized in that: The outer side of the rotating disk (21) is provided with an arc panel (211), the outer side of the rotating disk (21) is provided with a clamping plate, the arc panel (211) is arranged in a circumferential array on the outer side of the rotating disk (21), and the inner side of the rotating disk (21) is provided with an arc groove (2111).

7. The clamping structure as described in claim 6, characterized in that: The inner side of the arc-shaped groove (2111) is provided with a sliding rod (22), and one end of the sliding rod (22) is provided with a sliding block (221). The sliding block (221) slides on the inner side of the sliding groove (231).

8. A converter slag-blocking cap, characterized in that: Includes the clamping structure according to any one of claims 1 to 7; and a slag-blocking assembly (3) including a slag-blocking column (31) disposed inside the rotating disk (21).

9. The converter slag-blocking cap as described in claim 8, characterized in that: The slag-blocking assembly (3) also includes a limiting disk (32) disposed at one end of the slag-blocking column (31), and the inner side of the limiting disk (32) is provided with an installation hole (321).

10. The converter slag-blocking cap as described in claim 9, characterized in that: The mounting hole (321) has a threaded groove on its inner side.