Medium frequency furnace taphole lining structure

Abstract

This utility model discloses a lining structure for the taphole of a medium-frequency furnace, relating to the field of medium-frequency furnace technology. The lining structure includes a furnace body, an annular rim cover, and an installation structure. The annular rim cover is fitted onto the top of the furnace body. An annular connecting cylinder is fixedly installed on the top of the annular rim cover. A discharge guide port is fixedly installed on the outer wall of the annular connecting cylinder. A discharge notch communicating with the discharge guide port is provided on the annular connecting cylinder. The installation structure is mounted on the annular rim cover. This lining structure for the taphole is modularly connected to the furnace body, facilitating rapid replacement. Compared to a fixed taphole structure where the taphole is integrally sintered with the lining, this avoids the need for furnace shutdown and cooling after damage, followed by manual removal, reconstruction, and furnace drying before taphole replacement can be performed. This makes operation more convenient and avoids the time-consuming process of replacing the taphole, which can take hours or even days, reducing downtime and improving equipment utilization.

Description

Technical Field

[0001] This utility model relates to the field of medium frequency furnace technology, and in particular to the furnace lining structure of the steel tapping port of a medium frequency furnace. Background Technology

[0002] The tapping spout of an intermediate frequency furnace is generally a fixed structure that is integrally sintered with the furnace lining. However, after a certain period of use, the tapping spout becomes damaged and requires the furnace to be shut down for cooling. Then, manual chiseling, rebuilding, and furnace drying are necessary to replace the tapping spout. This is not only very inconvenient, but replacing the tapping spout can also take several hours or even days, directly resulting in excessively long furnace downtime. Therefore, a new furnace lining structure for the tapping spout of an intermediate frequency furnace is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a furnace lining structure for the tapping spout of a medium-frequency furnace, which can solve the problem of the fixed tapping spout being integrally sintered with the furnace lining. After a certain period of use, the tapping spout is damaged and needs to be shut down for cooling. Then, it needs to be manually removed, rebuilt, and the furnace dried before the tapping spout can be replaced. This is not only very inconvenient, but also takes several hours or even days to replace the tapping spout, which directly leads to the problem of excessively long furnace shutdown time.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a furnace lining structure for the tapping port of a medium-frequency furnace, comprising a medium-frequency furnace body, an annular rim cover, and an installation structure. The annular rim cover is fitted onto the top of the medium-frequency furnace body. An annular connecting cylinder is fixedly installed on the top of the annular rim cover. A discharge guide port is fixedly installed on the outer wall of the annular connecting cylinder. A discharge notch communicating with the discharge guide port is opened on the annular connecting cylinder. The installation structure is disposed on the annular rim cover.

[0005] Preferably, the annular rim cover, the annular connecting cylinder, and the discharge guide are integrally formed.

[0006] Preferably, the annular rim cover, the annular connecting cylinder, and the discharge guide are all made of inorganic non-metallic materials.

[0007] Preferably, a reinforcing support strip is fixedly installed on the outer wall of the annular cover, and one end of the reinforcing support strip is fixedly connected to the discharge guide port, so that the connection between the annular cover and the discharge guide port is more stable.

[0008] Preferably, the inner wall of the annular edge cover is provided with an annular guide bevel to facilitate the guidance of molten steel.

[0009] Preferably, the installation structure includes a connecting metal plate, a mounting metal plate, an annular anti-detachment block, and hexagonal bolts. The annular cover has an annular opening and six sets of anti-detachment grooves communicating with it. The connecting metal plate is fixedly installed in the annular opening. The annular anti-detachment block is fixedly connected to the connecting metal plate and is located in the anti-detachment groove. The mounting metal plate is fixedly installed on the inner wall of the connecting metal plate. There are eight sets of hexagonal bolts arranged in an annular and equidistant manner. Both the connecting metal plate and the mounting metal plate are provided with a heat-insulating coating.

[0010] Preferably, the connecting metal plate has eight sets of flat gaskets arranged in a ring at equal intervals, and one end of the hexagonal bolt passes through the flat gasket and is threadedly connected to the furnace body of the medium frequency furnace.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The tapping lining structure of this medium-frequency furnace features a modular connection between the tapping lining and the furnace body. This allows for quick replacement of the tapping lining in case of damage. Compared to a fixed tapping lining that is integrally sintered with the furnace lining, this design avoids the need for furnace shutdown and cooling after damage, followed by manual removal, reconstruction, and furnace drying before tapping replacement can be achieved. This makes the operation more convenient and avoids the time-consuming process of replacing the tapping lining, which can take several hours or even days. This reduces furnace downtime, improves equipment utilization, and enhances the practicality of the structure. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is a front sectional perspective view of the present invention;

[0016] Figure 3 This utility model Figure 2 Enlarged view of part A in the image.

[0017] Attached reference numerals: 1. Medium frequency furnace body; 2. Annular edge cover; 3. Annular connecting cylinder; 4. Discharge guide port; 5. Reinforcing support bar; 6. Installation structure; 61. Connecting metal plate; 62. Mounting metal plate; 63. Annular anti-detachment block; 7. Hexagonal bolt. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a furnace lining structure for the tapping port of a medium-frequency furnace, including a medium-frequency furnace body 1, an annular rim cover 2 and an installation structure 6. The annular rim cover 2 is fitted onto the top of the medium-frequency furnace body 1. An annular connecting cylinder 3 is fixedly installed on the top of the annular rim cover 2. A discharge guide port 4 is fixedly installed on the outer wall of the annular connecting cylinder 3. A discharge notch communicating with the discharge guide port 4 is opened on the annular connecting cylinder 3. The installation structure 6 is set on the annular rim cover 2.

[0020] The annular edge cover 2, the annular connecting cylinder 3, and the discharge guide port 4 are integrally formed structures. The annular edge cover 2, the annular connecting cylinder 3, and the discharge guide port 4 are all made of inorganic non-metallic materials. A reinforcing support strip 5 is fixedly installed on the outer wall of the annular edge cover 2. One end of the reinforcing support strip 5 is fixedly connected to the discharge guide port 4. An annular guide bevel is opened on the inner wall of the annular edge cover 2.

[0021] The mounting structure 6 includes a connecting metal plate 61, a mounting metal plate 62, an annular anti-detachment block 63, and hexagonal bolts 7. An annular opening and six sets of anti-detachment grooves communicating with it are provided on the annular cover 2. The connecting metal plate 61 is fixedly installed inside the annular opening. The annular anti-detachment block 63 is fixedly connected to the connecting metal plate 61 and is located within the anti-detachment groove. The mounting metal plate 62 is fixedly installed on the inner wall of the connecting metal plate 61. Eight sets of hexagonal bolts 7 are arranged in an annular, equidistant pattern. Both the connecting metal plate 61 and the mounting metal plate 62 are coated with a heat-insulating coating. Eight sets of flat gaskets arranged in an annular, equidistant pattern are provided on the connecting metal plate 61. One end of each hexagonal bolt 7 passes through a flat gasket and is threadedly connected to the induction furnace body 1. When the tapping spout needs to be replaced, use tools to remove the hexagonal bolts 7, then lift the annular rim cover 2 upwards, clean the top of the induction furnace body 1, and then install the new annular rim cover 2. The tapping spout structure is connected to the induction furnace body 1 in a modular manner, which facilitates quick replacement when the tapping spout structure is damaged. Compared with the fixed tapping spout structure that is integrally sintered with the furnace lining, this avoids the need to shut down the furnace for cooling after damage, and then undergo manual chiseling, reconstruction, and furnace drying before the tapping spout can be replaced. This makes the operation more convenient and also avoids the situation where replacing the tapping spout takes several hours or even days, reducing furnace downtime, improving equipment utilization, and enhancing the practicality of the structure.

[0022] Working principle: When the tapping port needs to be replaced, use tools to remove the hex bolt 7, then lift the annular edge cover 2 upwards, clean the top of the medium frequency furnace body 1, and then install the new annular edge cover 2.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. The furnace lining structure at the taphole of an intermediate frequency furnace, characterized in that, include: Medium frequency furnace body (1); An annular edge cover (2) is fitted on the top of the medium frequency furnace body (1). An annular connecting cylinder (3) is fixedly installed on the top of the annular edge cover (2). A discharge guide port (4) is fixedly installed on the outer wall of the annular connecting cylinder (3). A discharge notch communicating with the discharge guide port (4) is opened on the annular connecting cylinder (3). The mounting structure (6) is mounted on the annular edge cover (2).

2. The furnace lining structure at the taphole of the medium-frequency furnace according to claim 1, characterized in that: The annular edge cover (2), the annular connecting cylinder (3), and the discharge guide (4) are integrally formed structures.

3. The furnace lining structure at the taphole of the medium-frequency furnace according to claim 2, characterized in that: The annular edge cover (2), the annular connecting cylinder (3), and the discharge guide (4) are all made of inorganic non-metallic materials.

4. The lining structure at the taphole of the medium-frequency furnace according to claim 3, characterized in that: A reinforcing support strip (5) is fixedly installed on the outer wall of the annular cover (2), and one end of the reinforcing support strip (5) is fixedly connected to the discharge guide port (4).

5. The lining structure at the taphole of the medium-frequency furnace according to claim 4, characterized in that: The inner wall of the annular cover (2) is provided with an annular guide bevel.

6. The furnace lining structure at the taphole of the medium-frequency furnace according to claim 1, characterized in that: The installation structure (6) includes a connecting metal plate (61), a mounting metal plate (62), an annular anti-detachment block (63), and hexagonal bolts (7). An annular opening and six sets of anti-detachment grooves communicating with it are provided on the annular cover (2). The connecting metal plate (61) is fixedly installed in the annular opening. The annular anti-detachment block (63) is fixedly connected to the connecting metal plate (61). The annular anti-detachment block (63) is located in the anti-detachment groove. The mounting metal plate (62) is fixedly installed on the inner wall of the connecting metal plate (61). There are eight sets of hexagonal bolts (7) arranged in an annular equidistant pattern. Both the connecting metal plate (61) and the mounting metal plate (62) are provided with heat insulation coating.

7. The intermediate frequency vessel tap hole refractory structure of claim 6, wherein: The connecting metal plate (61) has eight sets of flat gaskets arranged in a ring at equal intervals. One end of the hexagonal bolt (7) passes through the flat gasket and is threadedly connected to the furnace body (1) of the medium frequency furnace.

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