Improved tundish retaining wall

Abstract

The utility model discloses an improved tundish retaining wall, and relates to the technical field of casting. An improved tundish retaining wall comprises a tundish body, two limiting devices are arranged on the tundish body, each limiting device comprises a retaining wall body, two T-shaped blocks and two fixed mounting plates, and the outer walls of two protruding blocks on the two fixed mounting plates are both in threaded connection with fixing bolts; a fixed bolt in the limiting device is screwed to rotate, so that the outer wall of the other end of the fixed bolt is separated from the interior of the tundish body, then a fixed mounting plate is pulled to be taken down, meanwhile, a limiting block is separated from the interior of a limiting block groove, and then a retaining wall is pulled by means of an external tool, so that the retaining wall can be taken out from the interior of the tundish body. In this way, the retaining wall is disassembled quickly, the situation that workers need to disassemble the whole tundish to disassemble the retaining wall is avoided, the workload of the workers is effectively reduced, and meanwhile the maintenance and overhaul efficiency of the retaining wall is improved.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to an improved tundish retaining wall. Background Technology

[0002] The tundish is an important piece of equipment used in the steelmaking process to connect the steelmaking furnace and the continuous casting machine. In the continuous casting process, the main function of the tundish is to store and distribute molten steel, ensuring that the temperature and composition of the molten steel are uniform before entering the continuous casting machine, while also removing some inclusions.

[0003] The baffle wall in the tundish is a partition structure installed inside the tundish. Its main function and role is to control the flow of molten steel. The baffle wall can change the flow path of molten steel in the tundish, guide the flow of molten steel, reduce eddies and turbulence, thereby helping to improve the quality of molten steel. At the same time, it promotes the floating of inclusions. By designing a reasonable baffle wall structure, the molten steel can have a longer residence time in the tundish, which helps inclusions (such as non-metallic inclusions) to float to the surface of the molten steel and be absorbed by the slag layer.

[0004] The existing improved tundish retaining wall distributes, buffers, and purifies molten steel by being fixed inside the tundish. However, after prolonged use, the fixed retaining wall may wear out or be damaged due to high temperature and erosion by molten steel. In this case, replacing or repairing the retaining wall requires removing the entire tundish from the production line, which is not only time-consuming and labor-intensive but may also lead to production interruption, thereby reducing the practicality of the equipment and increasing the workload of the operators. Utility Model Content

[0005] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide an improved tundish retaining wall. This improves the design of the tundish retaining wall, which can solve the problem that after long-term use, the fixed retaining wall may wear or be damaged due to high temperature and molten steel erosion. In this case, replacing or repairing the retaining wall requires removing the entire tundish from the production line, which is not only time-consuming and labor-intensive, but may also lead to production interruption, thereby reducing the practicality of the equipment and increasing the workload of the operators.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an improved tundish retaining wall, comprising a tundish body, wherein two limiting devices are provided on the tundish body;

[0007] The limiting device includes a retaining wall, two T-blocks and two fixed mounting plates. The outer walls of the two protrusions on the two fixed mounting plates are threaded with fixing bolts. Two T-block slots are opened on the inner wall of the upper end of the intermediate bag body. The two T-blocks are fixedly connected to the outer walls of the upper ends of the retaining wall on both sides. Eight fixing bolt slots are opened on the upper surface of the intermediate bag body.

[0008] The lower surfaces of the two fixed mounting plates are fixedly connected to limit blocks, the upper surfaces of the two T-blocks are provided with limit block grooves, and the two limit devices are arranged inside the intermediate package body, with the two limit devices being relatively inclined.

[0009] Preferably, the two T-shaped block slots are inclined to each other, the eight fixing bolt slots are in groups of two, and the outer walls of the two T-shaped blocks are slidably connected to the interior of the corresponding T-shaped block slots;

[0010] Among them, the outer wall of the two limit blocks near the limit block groove is slidably connected to the inside of the corresponding limit block groove.

[0011] Preferably, the retaining wall is arranged at an angle inside the intermediate package body;

[0012] Among them, the ends of the four fixing bolts near the fixing bolt grooves are all threaded to the outside of the protrusions on the fixing bolts and are respectively connected to the internal threads of the corresponding fixing bolt grooves.

[0013] Preferably, a slag discharge port is provided on the outer wall of the upper end of the intermediate package body;

[0014] Both retaining walls have multiple holes on their lower outer walls.

[0015] Preferably, a slag discharge plate is fixedly connected to the upper outer wall of the intermediate cask body;

[0016] The slag discharge plate is located below the slag discharge port, and two baffles form a flow stabilization zone inside the intermediate package.

[0017] Preferably, cooling pipes are installed inside the upper ends of both of the retaining walls;

[0018] Both ends of the two cooling pipes are fixedly extended to the outside of the retaining wall, and both ends of the two cooling pipes are fixedly connected with connecting flanges.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This improved tundish retaining wall, by rotating the fixing bolt in the limiting device, causes its other outer wall to disengage from the interior of the tundish body. Then, by pulling the fixing plate to remove it, the limiting block disengages from the interior of the limiting block groove. Finally, by using external tools to pull the retaining wall, it can be removed from the interior of the tundish body. This method of removing the retaining wall is quick and easy, avoiding the need for workers to disassemble the entire tundish to remove the retaining wall. It effectively reduces the workload of workers and improves the maintenance and repair efficiency of the retaining wall. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of the retaining wall of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the retaining wall of this utility model;

[0025] Figure 4 This utility model Figure 2 A structural schematic diagram of the enlarged view at point A in the middle.

[0026] Reference numerals in the attached drawings: 1. Tundish body; 2. Slag discharge port; 3. Hole; 4. Flow stabilization zone; 5. Fixed mounting plate; 6. Retaining wall; 7. Fixing bolt; 8. Connecting flange; 9. T-block groove; 10. Fixing bolt groove; 11. T-block; 12. Limiting block groove; 13. Cooling pipe; 14. Limiting block; 15. Slag discharge plate. Detailed Implementation

[0027] 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.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Please see Figure 1-4This utility model provides a technical solution: an improved tundish retaining wall, including a tundish body 1;

[0032] Two limiting devices are provided on the intermediate package body 1;

[0033] The limiting device includes a retaining wall 6, two T-blocks 11, and two fixed mounting plates 5. The outer walls of the two protrusions on the two fixed mounting plates 5 are threaded with fixing bolts 7. Two T-block grooves 9 are formed on the upper inner wall of the intermediate bag body 1, and the two T-block grooves 9 are inclined and opposite each other. The two T-blocks 11 are fixedly connected to the upper outer walls on both sides of the retaining wall 6. Eight fixing bolt grooves 10 are formed on the upper surface of the intermediate bag body 1, arranged in pairs. The outer walls of the two T-blocks 11 are slidably connected to the interior of their corresponding T-block grooves 9. Limiting blocks 14 are fixedly connected to the lower surface of plate 5. Limiting block grooves 12 are opened on the upper surface of the two T-shaped blocks 11. The outer wall of the two limiting blocks 14 near the limiting block groove 12 is slidably connected to the interior of the corresponding limiting block groove 12. The retaining wall 6 is arranged at an angle inside the intermediate bag body 1. The ends of the four fixing bolts 7 near the fixing bolt groove 10 are threaded to the outside of the protrusion on the fixing bolt 7 and are respectively threadedly connected to the interior of the corresponding fixing bolt groove 10. The two limiting devices are arranged inside the intermediate bag body 1 and are relatively inclined.

[0034] The tundish body 1 has a slag discharge port 2 on its upper outer wall, and multiple holes 3 on the lower outer walls of the two baffles 6. A slag discharge plate 15 is fixedly connected to the upper outer wall of the tundish body 1, and the slag discharge plate 15 is below the slag discharge port 2. The two baffles 6 form a flow stabilization zone 4 inside the tundish body 1. Cooling pipes 13 are installed inside the upper end of the two baffles 6. Both ends of the two cooling pipes 13 are fixedly extended to the outside of the baffles 6. Both ends of the two cooling pipes 13 are fixedly connected to connecting flanges 8.

[0035] Furthermore, when using this device, molten steel from the steelmaking furnace is first poured into the tundish body 1 through a ladle. The molten steel first contacts the baffle wall 6. The inclined design of the baffle wall 6 guides the molten steel to flow smoothly into the tundish body 1, reducing eddies and splashes, and creating an ideal flow pattern within the tundish body 1. This helps to float and separate inclusions. Then, the inclusions are guided by the baffle wall 6 and flow out through the slag discharge port 2 and slag discharge plate 15. Simultaneously, it is connected to the connecting flange 8 through external equipment. Then, the external equipment supplies coolant to the interior of the cooling pipe 13 through the connecting flange 8. The cooling pipe 13 then... The S-shaped arrangement reduces the thermal stress of the retaining wall 6 under high-temperature conditions while the coolant flows inside the cooling pipe 13, extending its service life. The multiple holes 3 at the lower end of the retaining wall 6 allow the molten steel to be distributed more evenly within the tundish body 1, reducing dead zones and improving the mixing effect. When the retaining wall 6 needs to be removed, the fixing bolt 7 is turned to rotate it so that its other outer wall is no longer in contact with the interior of the tundish body 1. Then, the fixing plate 5 is pulled to remove it, simultaneously disengaging the limiting block 14 from the interior of the limiting block groove 12. Finally, the retaining wall 6 can be removed from the interior of the tundish body 1 by pulling it with external tools.

[0036] By rotating the fixing bolt 7 in the limiting device, the outer wall of its other end is disengaged from the interior of the tundish body 1. Then, the fixing plate 5 is pulled to remove it, simultaneously disengaging the limiting block 14 from the interior of the limiting block groove 12. Then, the retaining wall 6 can be removed from the interior of the tundish body 1 by pulling it with external tools. This method of removing the retaining wall 6 is quick and easy, avoiding the need for workers to disassemble the entire tundish to remove the retaining wall 6. This effectively reduces the workload of workers and improves the maintenance and repair efficiency of the retaining wall 6. Coolant is supplied to the interior of the cooling pipe 13 through the connecting flange 8 via external equipment. The cooling pipe 13 is arranged in an S-shape. This coolant flow inside the cooling pipe 13 reduces the thermal stress of the retaining wall 6 in the high-temperature environment, extends its service life, and helps control the temperature of the molten steel in the tundish body 1, preventing the molten steel from overheating and ensuring that the molten steel is continuously cast at a suitable temperature.

[0037] Structural Description: Tundish Body 1, Slag Discharge Port 2, and Slag Discharge Plate 15: Tundish Body 1 refers to the main body of the tundish, usually made of refractory material, used to contain and transport molten steel. Slag Discharge Port 2 is a specially designed opening on Tundish Body 1, used to discharge non-metallic inclusions and slag from the molten steel. The design of Slag Discharge Plate 15, in conjunction with Slag Discharge Port 2, can guide inclusions to flow towards the Slag Discharge Port, improving slag discharge efficiency.

[0038] Baffle 6: The flow rate and velocity of molten steel from the tundish body 1 into the crystallizer can be controlled by the baffle 6, ensuring that the molten steel flows to each crystallizer in a uniform and stable manner, thereby improving the stability of the continuous casting process.

[0039] Fixed mounting plate 5, fixed bolt 7 and limiting block 14: The limiting block 14 is fixedly connected to the lower surface of the fixed mounting plate 5. Then, the other end of the limiting block 14 is slidably connected to the inside of the limiting block groove 12. Then, the fixed bolt 7 cooperates with the fixed bolt groove 10 to fix and limit the fixed mounting plate 5 and limit the retaining wall 6 at the same time.

[0040] 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. An improved tundish dam comprising a tundish body (1), characterized in that: Two limiting devices are arranged on the tundish body (1); The limiting device comprises a retaining wall (6), two T-shaped blocks (11) and two fixed mounting plates (5), two protrusions on the outer wall of the two fixed mounting plates (5) are threadedly connected with fixed bolts (7), two T-shaped block grooves (9) are formed in the inner wall of the upper end of the tundish body (1), the two T-shaped blocks (11) are fixedly connected to the outer wall of the upper end of the two sides of the retaining wall (6), and eight fixed bolt grooves (10) are formed in the upper surface of the tundish body (1). The lower surface of each of the two fixed mounting plates (5) is fixedly connected with a limiting block (14), the upper surface of each of the two T-shaped blocks (11) is provided with a limiting block groove (12), the two limiting devices are arranged in the tundish body (1), and the two limiting devices are oppositely inclined.

2. The improved block wall of tundish according to claim 1, wherein: The two T-shaped block grooves (9) are oppositely inclined, the eight fixed bolt grooves (10) are arranged in two groups, and the outer wall of each of the two T-shaped blocks (11) is slidably connected with the inner part of the corresponding T-shaped block groove (9). The outer wall of each of the two limiting blocks (14) near the end close to the limiting block groove (12) is slidably connected with the inner part of the corresponding limiting block groove (12).

3. The improved block wall for tundish according to claim 1, wherein: The retaining wall (6) is arranged to be inclined in the tundish body (1). The end of each of the four fixed bolts (7) near the fixed bolt groove (10) is threadedly extended to the outside of the protrusion of the fixed bolt (7) and is threadedly connected with the inner part of the corresponding fixed bolt groove (10).

4. The improved dam for a tundish according to claim 1, wherein: A slag discharge opening (2) is formed in the outer wall of the upper end of the tundish body (1). The lower end of the outer wall of each of the two retaining walls (6) is provided with a plurality of holes (3).

5. The improved dam for a tundish according to claim 1, wherein: A slag discharge plate (15) is fixedly connected to the outer wall of the upper end of the tundish body (1). The slag discharge plate (15) is arranged below the slag discharge opening (2), and the two retaining walls (6) enclose a steady flow area (4) in the tundish body (1).

6. The improved dam for a tundish according to claim 1, wherein: A cooling pipe (13) is arranged in the inner part of the upper end of each of the two retaining walls (6). The two ends of each of the two cooling pipes (13) are fixedly extended to the outside of the retaining wall (6), and the two ends of each of the two cooling pipes (13) are fixedly connected with a connecting flange (8).

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