A modular intermediate tundish nozzle

Abstract

This utility model discloses a modular intermediate ladle nozzle, including a nozzle body and a loading assembly. The loading assembly consists of a fixed base plate, suspended side plates, and a loading seat. Two suspended side plates are fixedly connected to the bottom sides of the fixed base plate. The loading seat is located directly below the fixed base plate, and a limiting stud is fixedly connected to each side of the loading seat. This utility model, by setting up the loading assembly, enables rapid assembly and disassembly of the nozzle body. The loading seat, composed of the fixed base plate, suspended side plates, and loading seat, can slide up and down through the cooperation of the limiting studs, vertical grooves, and hand-tightening nuts, thereby driving the nozzle body to move up and down. Simultaneously, the through groove and blind groove on the top of the loading seat can cooperate with the positioning blocks on both sides of the nozzle body to achieve rotational locking of the nozzle body, thus facilitating the positioning of the nozzle body by the operator and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a modular tundish nozzle. Background Technology

[0002] In the steelmaking process, the tundish, as a key piece of equipment connecting the steelmaking furnace and the continuous casting machine, plays a crucial role in storing, distributing, and purifying molten steel to ensure steel quality and the smooth operation of continuous casting production. The nozzle, as an important component of the tundish, is responsible for guiding the molten steel from the tundish into the crystallizer; its performance directly affects the stability of continuous casting production and the quality of the molten steel.

[0003] The patent disclosed in CN221434933U is a tundish top nozzle with a transition layer. By setting a transition layer between the nozzle body and the bowl, the patent avoids cracks at the joint caused by the large difference in thermal expansion coefficients between the aluminum-carbon body and the magnesium-carbon bowl, ensuring that there is no cracking or steel penetration during use, and effectively improving the reliability and life of the tundish top nozzle.

[0004] Although the patent effectively improves the reliability and lifespan of the sprue by setting a transition layer between the sprue body and the bowl, the patent does not mention any design for the assembly structure, which may cause inconvenience to the rapid assembly of the sprue and the tundish.

[0005] Therefore, it is necessary to invent a modular intermediate sprue nozzle to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a modular intermediate liner nozzle to solve the problems mentioned above.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a modular intermediate ladle nozzle, comprising a nozzle body and a loading assembly. The loading assembly consists of a fixed base plate, suspended side plates, and a loading seat. Two suspended side plates are fixedly connected to the bottom sides of the fixed base plate. The loading seat is positioned directly below the fixed base plate. A limiting stud is fixedly connected to each side of the loading seat. A vertical groove is formed in the middle of each of the two suspended side plates. One end of each limiting stud passes through the vertical groove and is threaded with a hand-tightening nut. The nut abuts against the surface of the suspended side plate. A first through hole is opened in the middle of the fixed base plate. A second through hole is opened in the middle of the loading seat. Two through slots and two blind slots are opened on the top of the loading seat. The line connecting the two through slots is perpendicular to the line connecting the two blind slots. Both the two through slots and the two blind slots are connected to the second through hole. The top of the sprue body is sequentially arranged through the second through hole and the first through hole. A positioning block is opened on each side of the sprue body. The through slots and blind slots are matched with the positioning blocks. The two positioning blocks are respectively engaged with the two blind slots.

[0008] By setting up loading components, the main body of the sprue can be quickly installed and disassembled, improving the modularity and replaceability of the sprue.

[0009] Preferably, each of the two suspended side plates has a set of limiting grooves, and the number of limiting grooves in each set is set to two, with the two limiting grooves symmetrically distributed about the vertical groove.

[0010] Preferably, a set of limiting sliders is fixedly connected to each side of the loading seat, and the number of limiting sliders in each set is set to two. The two limiting sliders are symmetrically distributed about the limiting studs, and the limiting sliders are slidably connected to the limiting grooves.

[0011] The combination of the limiting groove and the limiting slider enables the loading seat to move smoothly and stably during the adjustment process.

[0012] Preferably, the sprue body and the two positioning blocks are integrally formed, and the sprue body is made of aluminum zirconium carbon material.

[0013] The main body of the sprue and the positioning block are integrally molded, which enhances the integrity and strength of the structure. The main body of the sprue is made of aluminum zirconium carbon material, which has excellent high temperature resistance and corrosion resistance, making it suitable for use in high temperature environments and improving the service life and performance of the sprue.

[0014] Preferably, a bowl is fixedly connected to the top of the sprue body, and the bowl is made of silicon nitride material.

[0015] The bowl is fixedly connected to the top of the main body of the sprue and is made of silicon nitride material. Silicon nitride material has extremely high hardness and wear resistance, which can effectively resist the scouring and corrosion of high temperature molten steel, thereby extending the service life of the bowl and improving the overall performance of the sprue.

[0016] Preferably, the inner wall of the sprue body is fixedly connected with an inner lining, which is made of silicon nitride material.

[0017] The inner lining is fixedly connected to the inner wall of the sprue body and is made of silicon nitride material. This design can further protect the sprue body from the corrosion of high-temperature molten steel and improve the service life of the sprue.

[0018] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0019] 1. By setting up a loading assembly, the main body of the sprue can be quickly assembled and disassembled. The loading assembly consists of a fixed base plate, a suspended side plate, and a loading seat. The loading seat can slide up and down through the cooperation of a limiting stud, a vertical slide groove, and a hand-tightening nut, thereby driving the main body of the sprue to move up and down. At the same time, the through groove and blind groove set on the top of the loading seat can cooperate with the positioning blocks on both sides of the main body of the sprue to realize the rotation and locking of the main body of the sprue, thereby facilitating the positioning of the main body of the sprue by the staff and improving work efficiency.

[0020] 2. By setting the bowl and lining, the service life of the main body of the nozzle and the quality of molten steel can be improved. Both the bowl and the lining are made of silicon nitride material. Silicon nitride material has high hardness and wear resistance, which can effectively resist the scouring and erosion of molten steel, thereby extending the service life of the main body of the nozzle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the main body of the water inlet of this utility model during disassembly;

[0024] Figure 4 This is a schematic diagram of the main structure of the water inlet of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the loading base of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Main body of the sprue; 2. Fixed base plate; 3. Suspended side plate; 4. Loading seat; 5. Limiting stud; 6. Vertical slide groove; 7. Hand-tightening nut; 8. No. 1 through hole; 9. No. 2 through hole; 10. Through groove; 11. Blind groove; 12. Positioning block; 13. Limiting slide groove; 14. Limiting slider; 15. Bowl mouth; 16. Inner liner. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figure 1-5 The modular intermediate ladle nozzle shown includes a nozzle body 1 and a loading assembly. The loading assembly consists of a fixed base plate 2, suspended side plates 3, and a loading seat 4. Two suspended side plates 3 are fixedly connected to the bottom sides of the fixed base plate 2. The loading seat 4 is located directly below the fixed base plate 2. A limiting stud 5 is fixedly connected to each side of the loading seat 4. A vertical groove 6 is formed in the middle of each of the two suspended side plates 3. One end of the limiting stud 5 passes through the vertical groove 6 and is threaded with a hand-tightening nut 7. The hand-tightening nut 7 abuts against the surface of the suspended side plate 3. A first through hole 8 is provided in the middle of the fixed base plate 2, and a second through hole 9 is provided in the middle of the loading seat 4. Two through slots 10 and two blind slots 11 are provided on the top of the loading seat 4. The line connecting the two through slots 10 and the line connecting the two blind slots 11 are perpendicular to each other. Both through slots 10 and blind slots 11 are connected to the second through hole 9. The top of the sprue body 1 is provided with the second through hole 9 and the first through hole 8 passing through it in sequence. A positioning block 12 is provided on each side of the sprue body 1. Both through slots 10 and blind slots 11 are matched with the positioning blocks 12. The two positioning blocks 12 are respectively engaged with the two blind slots 11.

[0030] In one aspect of this embodiment, each of the two suspended side plates 3 has a set of limiting grooves 13, and each set of limiting grooves 13 has two grooves. The two limiting grooves 13 are symmetrically distributed about the vertical groove 6. Each side of the loading seat 4 is fixedly connected to a set of limiting sliders 14, and each set of limiting sliders 14 has two sliders. The two limiting sliders 14 are symmetrically distributed about the limiting studs 5. The limiting sliders 14 are slidably connected to the limiting grooves 13. The sprue body 1 and the two positioning blocks 12 are integrally formed. The sprue body 1 is made of aluminum zirconium carbon material. The top of the sprue body 1 is fixedly connected to a bowl 15, which is made of silicon nitride material. The inner wall of the sprue body 1 is fixedly connected to an inner liner 16, which is made of silicon nitride material.

[0031] Working principle of this utility model:

[0032] Refer to the instruction manual appendix Figure 1-5When using this utility model, firstly, fix the loading assembly to the outlet at the bottom of the intermediate package using the fixing base plate 2. Then, loosen the hand-tightening nut 7 so that the loading seat 4 slides down to its lowest position. Next, align the two positioning blocks 12 on the sprue body 1 with the two through slots 10 on the loading seat 4. Then, insert the sprue body 1 through the second through hole 9 from bottom to top. When the positioning blocks 12 pass through the through slots 10 and reach above the loading seat 4, rotate the sprue body 1 90 degrees and pull it downwards. This allows the two positioning blocks 12 to engage with the two blind slots 11 respectively, achieving the initial assembly of the sprue body 1. Then, the loading seat 4 is raised to the highest position. At this time, the sprue body 1 passes through the first through hole 8, and the positioning blocks 12 abut against the bottom of the fixing base plate 2. Then, the screw nut 7 is tightened, so that the loading seat 4 is locked in the current position. Thus, the sprue body 1 is fixed. After the top of the sprue body 1 passes through the first through hole 8, it will extend into the outlet at the bottom of the intermediate tundish, achieving the pairing of the sprue and the intermediate tundish.

[0033] When disassembling the sprue body 1, simply loosen the hand-tightening nut 7 so that the loading seat 4 slides down to the lowest position. Then, push the sprue body 1 upward and rotate it 90 degrees in the opposite direction. Finally, pull the sprue body 1 downward.

Claims

1. A modular tundish nozzle comprising a nozzle body (1) and a loading assembly, characterized in that: The loading assembly consists of a fixed base plate (2), suspended side plates (3), and a loading seat (4). Two suspended side plates (3) are fixedly connected to the bottom sides of the fixed base plate (2). The loading seat (4) is positioned directly below the fixed base plate (2). A limiting stud (5) is fixedly connected to each side of the loading seat (4). A vertical groove (6) is opened in the middle of each of the two suspended side plates (3). One end of the limiting stud (5) passes through the vertical groove (6) and is threaded with a hand-tightening nut (7). The hand-tightening nut (7) abuts against the surface of the suspended side plate (3). A through hole (8) is opened in the middle of the fixed base plate (2). The loading seat (4) has a second through hole (9) in the middle. The top of the loading seat (4) has two through slots (10) and two blind slots (11). The line connecting the two through slots (10) is perpendicular to the line connecting the two blind slots (11). The two through slots (10) and the two blind slots (11) are connected to the second through hole (9). The top of the water inlet body (1) is set through the second through hole (9) and the first through hole (8) in sequence. A positioning block (12) is set on each side of the water inlet body (1). The through slots (10) and blind slots (11) are matched with the positioning blocks (12). The two positioning blocks (12) are respectively engaged with the two blind slots (11).

2. A modular tundish nozzle according to claim 1, characterized in that: Each of the two suspended side plates (3) has a set of limiting grooves (13) on its surface. The number of each set of limiting grooves (13) is set to two, and the two limiting grooves (13) are symmetrically distributed about the vertical groove (6).

3. A modular tundish nozzle according to claim 2, wherein: Each side of the loading seat (4) is fixedly connected to a set of limiting sliders (14). The number of each set of limiting sliders (14) is set to two. The two limiting sliders (14) are symmetrically distributed about the limiting stud (5). The limiting sliders (14) are slidably connected to the limiting groove (13).

4. The modular tundish nozzle of claim 1, wherein: The main body of the sprue (1) and the two positioning blocks (12) are integrally formed, and the main body of the sprue (1) is made of aluminum zirconium carbon material.

5. The modular tundish spout of claim 1, wherein: The top of the main body (1) of the water inlet is fixedly connected to a bowl (15), which is made of silicon nitride material.

6. A modular tundish nozzle according to claim 1, wherein: The inner wall of the main body (1) of the water inlet is fixedly connected with a liner (16), which is made of silicon nitride material.

Images