Temperature homogenizing device for molten steel of continuous casting tundish

Abstract

The utility model discloses a continuous casting tundish molten steel temperature homogenizing device, which relates to the technical field of continuous casting and comprises a tundish body, a plurality of first porous bricks are fixedly mounted on the inner bottom wall of the tundish body, the first porous bricks are annularly distributed, and inert gas is introduced into pore passages of the first porous bricks; a vertical rod with the downward elastic direction is rotationally installed at the top of the tundish body, and an inclined plate is fixedly installed on the side face of the vertical rod through a transverse rod. According to the scheme, the inclined plate is driven to rotate and ascend by a certain distance through impact of ascending gas, the inclined plate sinks when passing through gaps between the first porous bricks to form an up-and-down fluctuating state, stirring can transversely drive liquid to flow, an ascending path of the gas deflects, temperature homogenization can be accelerated, and when molten steel is added into the tundish body, the inclined plate rotates along with rotation of the inclined plate; and the molten steel can be diffused to other positions in the tundish body, so that the temperature is more uniform.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous casting, specifically to a device for homogenizing the temperature of molten steel in a continuous casting tundish. Background Technology

[0002] In continuous casting, the temperature uniformity of the molten steel in the tundish has a crucial impact on the quality of the cast billet. Uneven steel temperature can lead to quality problems such as internal cracks and segregation in the cast billet, reducing the product yield.

[0003] However, in actual operation, inert gas is often introduced to achieve temperature uniformity, but the upward path of the gas is singular, resulting in poor steel fluidity. Therefore, those skilled in the art have provided a device for uniformizing the temperature of molten steel in a continuous casting tundish to solve the aforementioned problems. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a device for homogenizing the temperature of molten steel in a continuous casting tundish.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A device for homogenizing the temperature of molten steel in a continuous casting tundish includes a tundish body with multiple porous bricks fixedly installed on its inner bottom wall. The multiple porous bricks are arranged in a ring and inert gas is introduced into their channels. A vertical rod with an elastic downward direction is rotatably installed on the top of the tundish body. An inclined plate is fixedly installed on the side of the vertical rod by a horizontal rod. The inclined plate is located above the porous bricks and is inclined. The horizontal rod drives the inclined plate to rotate and move upward a certain distance through the impact of the upward-moving gas. The gas itself changes its flow direction, and the inclined plate sinks when passing through the gap between the porous bricks.

[0007] Preferably, a mounting frame is fixedly installed on the top of the intermediate package body, a vertical tube is rotatably installed on the mounting frame, a vertical rod is vertically movably inserted into the bottom end of the vertical tube, and a spring is provided inside the vertical tube to compress the vertical rod downward.

[0008] Preferably, a motor is fixedly mounted on the top of the mounting bracket, and the output end of the motor is fixedly connected to the top of the vertical pipe.

[0009] Preferably, the top of the vertical rod is set as a regular hexagonal prism, and the vertical tube is provided with a groove adapted to the vertical rod, and the groove is also set as a regular hexagonal prism.

[0010] Preferably, a second porous brick is fixedly installed between the first porous bricks, the second porous brick being located directly below the vertical rod and between the inclined plates.

[0011] In summary, this utility model has the following beneficial technical effects:

[0012] To address the issue of uneven molten steel temperature within the tundish, this solution utilizes upward-moving gas to drive a sloping plate to rotate and ascend a certain distance. As the sloping plate passes through the gaps between the porous bricks, it sinks, creating an undulating motion. This stirring action laterally drives the liquid flow, and the deflection of the upward gas path accelerates temperature homogenization. When molten steel is added to the tundish, the rotation of the sloping plate allows the steel to diffuse to other parts of the tundish, further enhancing temperature uniformity. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the inclined plate distribution structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the spring structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the intermediate package of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Intermediate liner body; 2. Mounting frame; 3. Vertical tube; 4. Vertical rod; 5. Horizontal rod; 6. Inclined plate; 7. Perforated brick one; 8. Motor; 9. Spring; 10. Perforated brick two. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0020] A device for homogenizing the temperature of molten steel in a continuous casting tundish, referring to Figure 1-4 The intermediate liner body 1 includes a plurality of porous bricks 7 fixedly installed on the inner bottom wall. The plurality of porous bricks 7 are arranged in a ring and inert gas is introduced into the pores.

[0021] A vertical rod 4 with an elastic downward direction is rotatably installed on the top of the tundish body 1. An inclined plate 6 is fixedly installed on the side of the vertical rod 4 by a horizontal rod 5. The materials used for the vertical rod 4, the horizontal rod 5 and the inclined plate 6 do not react with the molten steel. The inclined plate 6 is located above the porous brick 7 and is set at an angle.

[0022] When the inclined plate 6 is impacted by the upward-moving gas, it will cause the inclined plate 6 to rotate and move upward a certain distance. The gas flow direction will also change. When the inclined plate 6 passes through the gap between the porous bricks 7, it will sink, forming an up-and-down undulating state.

[0023] The rising gas can drive the molten steel to flow. The lower surface of the inclined plate 6 will rotate and stir due to the impact of the gas. The stirring amplitude is small, which can drive the liquid to flow laterally. The upward path of the gas is deflected, which can accelerate the temperature homogenization. When molten steel is added into the tundish body 1, the molten steel can also diffuse to other positions in the tundish body 1 as the inclined plate 6 rotates, making the temperature more uniform.

[0024] Furthermore, a mounting bracket 2 is fixedly installed on the top of the intermediate liner body 1, and a vertical tube 3 is rotatably installed on the mounting bracket 2. A vertical rod 4 is vertically movably inserted into the bottom end of the vertical tube 3. A spring 9 is installed inside the vertical tube 3 to press the vertical rod 4 downward. This structure allows the vertical rod 4 to move flexibly up and down inside the vertical tube 3 under the action of gas impact, and after the gas impact disappears, the spring 9 can allow the vertical rod 4 to return to its initial position.

[0025] A motor 8 is fixedly mounted on the top of the mounting bracket 2. The output end of the motor 8 is fixedly connected to the top of the vertical tube 3. The function of the motor 8 is to drive the vertical tube 3 to rotate, which in turn drives the inclined plate 6 to rotate. When the gas impact force is insufficient or the resistance is large, the rotation of the inclined plate 6 can be controlled by the motor 8. The direction of rotation of the motor 8 is the same as the direction of rotation of the inclined plate 6 under the natural state of being driven by the gas. If necessary, the motor 8 can also be used for acceleration.

[0026] The top of the vertical rod 4 is set as a regular hexagonal prism, and the vertical tube 3 is provided with a groove that matches the vertical rod 4. The groove is also set as a regular hexagonal prism. This structural design ensures that the vertical rod 4 can slide up and down in the vertical tube 3 and rotate with the vertical tube 3, thus realizing the effective transmission of power.

[0027] A second perforated brick is fixedly installed between the first perforated brick 7. The second perforated brick is located directly below the vertical rod 4 and between the inclined plates 6. The installation of the second perforated brick further enhances the stirring effect of the molten steel in the tundish and helps to make the temperature of the molten steel more uniform.

[0028] Porous bricks 1-7 and 2-10 are generally installed onto the tundish using either masonry or embedding methods. During masonry, high-temperature refractory mortar is used to tightly bond the permeable bricks to the refractory lining of the tundish. In embedding, the permeable bricks are inserted into pre-designed installation grooves and sealed with refractory material. During installation, it is crucial to ensure a secure and accurate fit to prevent loosening or displacement during use.

[0029] Connect porous brick 7 and porous brick 2 10 to the gas supply system piping. Ensure the connection points are properly sealed to prevent gas leakage. Typically, metal flexible hoses or high-temperature resistant sealing fittings are used for connection, and specialized sealing materials are applied for sealing.

[0030] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for homogenizing the temperature of molten steel in a continuous casting tundish, characterized by: The intermediate ladle body (1) is fixedly installed with a plurality of porous bricks (7) on the inner bottom wall, and the plurality of porous bricks (7) are annularly distributed and have channels into which inert gas is introduced; The top of the intermediate ladle body (1) is rotatably installed with an elastic downward vertical rod (4), the side of the vertical rod (4) is fixedly installed with an inclined plate (6) through a horizontal rod (5), and the inclined plate (6) is located above the porous bricks (7) and is obliquely arranged; The inclined plate (6) is driven to rotate and move upward by a distance by the impact of the upward gas, the gas changes its flow direction, and the inclined plate (6) sinks when passing through the gap between the porous bricks (7).

2. The apparatus for homogenizing the temperature of molten steel in a continuous casting tundish according to claim 1, characterized in that: The top of the intermediate ladle body (1) is fixedly installed with a mounting rack (2), the mounting rack (2) is rotatably installed with a vertical pipe (3), the vertical rod (4) is vertically movably inserted into the bottom end of the vertical pipe (3), and the vertical pipe (3) is provided with a spring (9) for pressing the vertical rod (4) downward.

3. The apparatus for homogenizing the temperature of molten steel in a continuous casting tundish according to claim 2, characterized in that: The top of the mounting rack (2) is fixedly installed with a motor (8), and the output end of the motor (8) is fixedly connected with the top of the vertical pipe (3).

4. The apparatus for homogenizing the temperature of molten steel in a continuous casting tundish according to claim 3, characterized in that: The top end of the vertical rod (4) is provided as a regular hexagonal prism, the vertical pipe (3) is provided with a groove matched with the vertical rod (4), and the groove is also provided as a regular hexagonal prism.

5. The apparatus for uniformizing the temperature of molten steel in a continuous casting tundish according to claim 4, characterized in that: The mounting rack (2) is fixedly installed with a plurality of porous bricks (10) between the porous bricks (7), the porous bricks (10) are located directly below the vertical rod (4) and between the inclined plates (6).

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