A lifting and positioning device for a water inlet

Abstract

This application relates to a lifting and positioning device for a ladle nozzle, belonging to the field of steel smelting technology. It includes a frame and an mounting ring for placing the ladle nozzle. The frame has several circumferential support structures. A guide rod is fixed to the bottom of the mounting ring, passing through the frame and slidably connected to it. An inner ring is fixed to the lower end of the guide rod. An outer ring is rotatably connected to the frame, and the inner wall of the outer ring is threadedly connected to the outer wall of the inner ring. Two adjusting bolts are symmetrically threaded onto the frame, and a half-ring is rotatably connected to one side of each adjusting bolt facing each other. In implementation, if a gap occurs between the upper end of the ladle nozzle and the ladle, rotating the outer ring moves the mounting ring upward, ensuring reliable contact between the upper end of the ladle nozzle and the ladle, improving stability and strengthening the seal. Raising the mounting ring does not require readjusting the support structures, making it more convenient to use.

Description

Technical Field

[0001] This application relates to the field of steelmaking technology, and in particular to a lifting and positioning device for the tundish nozzle. Background Technology

[0002] The tundish nozzle is a refractory element used in continuous casting of steel. The upper end of the tundish nozzle is connected to the tundish and is used to receive the molten steel poured from the ladle, which is then distributed to various molds.

[0003] Patent application CN117226082A discloses a continuous casting tundish nozzle, including a nozzle lined with zirconia and integrally formed by isostatic pressing. The internal rectifying section of the nozzle has a riveting pattern, and the nozzle has a straight lower section and an arc-shaped upper section, forming an isostatic pressing line structure. This invention's continuous casting tundish nozzle is designed using fluid dynamics calculations, ensuring the inner cavity curvature is free of inflection points to reduce turbulence. The mold lining is designed using fluid dynamics, and the nozzle lining is pressed using isostatic pressing and sintered at high temperature, achieving an integral zirconia-lined nozzle to reduce turbulence. For some special steel grades, the inner cavity of the tundish rectifying section is designed with riveting patterns to further reduce turbulence.

[0004] Regarding the aforementioned technologies, the inventors believe that some tundish nozzles require support brackets for installation. After the brackets are installed, gaps may easily form between the upper end of the tundish nozzle and the ladle due to assembly gaps or improper operation, requiring readjustment of the brackets, which is time-consuming and laborious. Utility Model Content

[0005] This application provides a lifting and positioning device for the tundish nozzle, which can conveniently lift the tundish nozzle after the bracket is installed, avoiding gaps between it and the ladle, and improving sealing and stability.

[0006] The lifting and positioning device for the intermediate water inlet provided in this application adopts the following technical solution:

[0007] A lifting and positioning device for a sprue nozzle includes a frame and an mounting ring for placing the sprue nozzle. The frame is provided with several support legs around its circumference. A guide rod is fixed to the bottom of the mounting ring. The guide rod passes through the frame and is slidably connected to the frame. An inner ring is fixed to the lower end of the guide rod. An outer ring is rotatably connected to the frame. The inner wall of the outer ring is threadedly connected to the outer wall of the inner ring.

[0008] By adopting the above technical solution, when the outer ring rotates, the inner ring cannot rotate due to the sliding connection between the guide rod and the frame. The outer ring drives the inner ring to rise and fall through the threaded connection, thereby driving the mounting ring to rise and fall through the connection of the guide rod. Raising the mounting ring does not require readjusting the support structure, making it more convenient to use.

[0009] Optionally, multiple gripping rods are fixed to the bottom end of the outer ring.

[0010] By adopting the above technical solution, the grip rod is easy to hold directly by hand, and the person can rotate the outer ring by holding the grip rod.

[0011] Optionally, the frame has two adjusting bolts connected by symmetrical threaded connections, and a semi-ring is rotatably connected to one side of each adjusting bolt that faces each other.

[0012] By adopting the above technical solution, rotating the adjusting bolt can bring the two semi-rings closer or further apart, thereby achieving the clamping or loosening of the side wall of the water inlet.

[0013] Optionally, ear plates are fixed at both ends of the semi-ring, and a crossbar is fixed to the frame, the crossbar passing through the ear plates and slidably connected to the ear plates.

[0014] By adopting the above technical solution, the crossbar and ear plate are slidably connected, which avoids the rotation of the half ring and improves the sliding stability of the half ring.

[0015] Optionally, four guide rods are evenly arranged along the circumference of the frame.

[0016] By adopting the above technical solution, the sliding stability between the mounting ring and the frame is improved.

[0017] Optionally, the support structure includes an upper support fixed to the frame and a lower support slidably connected to the upper support.

[0018] By adopting the above technical solution, the total length of the support structure can be adjusted by pulling the lower support leg.

[0019] Optionally, the upper support leg is threaded with a fixing bolt, and the lower support leg has multiple fixing holes along its length for the fixing bolt to pass through.

[0020] By adopting the above technical solution, the relative positions of the upper and lower support legs are fixed by screwing the fixing bolt into one of the fixing holes.

[0021] Optionally, the bottom end of the lower support leg is fixed with a horizontally arranged base plate, and the base plate is provided with bolt holes.

[0022] By adopting the above technical solution, the base plate can improve the stability of the contact between the support structure and the installation position. Bolts can be inserted into the bolt holes to fix the base plate in the installation position and prevent displacement.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. If a gap is formed between the upper end of the tundish nozzle and the ladle, the mounting ring can be moved upward by rotating the outer ring to ensure reliable contact between the upper end of the tundish nozzle and the ladle, thereby improving stability and strengthening the seal.

[0025] 2. The mounting ring can be raised without needing to readjust the support structure, making it more convenient to use;

[0026] 3. By setting adjusting bolts and semi-rings, the intermediate water inlet can be clamped and positioned. Attached Figure Description

[0027] Figure 1 This is a perspective view of a lifting and positioning device for a water inlet in one embodiment;

[0028] Figure 2 This is a partial sectional view of the front of an embodiment;

[0029] Figure 3 yes Figure 1 A magnified view of a portion of the image;

[0030] Figure 4 This is a perspective view of the lifting and positioning device and the middle water inlet combined in the embodiment.

[0031] Explanation of reference numerals in the attached drawings: 1. Frame body; 2. Mounting ring; 3. Support structure; 21. Guide rod; 22. Inner ring; 11. Outer ring; 12. Holding rod; 13. Adjusting bolt; 14. Half ring; 15. Ear plate; 16. Crossbar; 31. Upper support leg; 32. Lower support leg; 33. Fixing bolt; 34. Fixing hole; 35. Base plate; 36. Bolt hole. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1 This embodiment discloses a lifting and positioning device for a middle-fill nozzle, including a frame 1 and an mounting ring 2 for placing the middle-fill nozzle. The frame 1 is provided with several support structures 3 around its circumference. The mounting ring 2 is located directly above the frame 1. The middle-fill nozzle is mounted on the mounting ring 2 through the protrusion on the top of the side wall. The frame 1 is raised by the support structures 3 and stabilized in the installation position.

[0034] Reference Figure 2 and Figure 3A guide rod 21 is fixed to the bottom of the mounting ring 2. The guide rod 21 is vertically positioned and passes through the frame 1, slidingly connecting with it. Four guide rods 21 are evenly arranged along the circumference of the frame 1 to improve the sliding stability between the mounting ring 2 and the frame 1. An inner ring 22 is fixed to the lower end of the guide rod 21, located below the frame 1. An outer ring 11 is rotatably connected to the bottom of the frame 1. The inner wall of the outer ring 11 has internal threads, and the outer wall of the inner ring 22 has external threads. The inner wall of the outer ring 11 is threadedly connected to the outer wall of the inner ring 22.

[0035] Multiple gripping rods 12 are fixed to the bottom of the outer ring 11. The gripping rods 12 are vertically arranged, and the personnel use the gripping rods 12 to rotate the outer ring 11. When the outer ring 11 rotates, since the inner ring 22 cannot rotate, the outer ring 11 drives the inner ring 22 to rise and fall through the threaded connection, thereby driving the mounting ring 2 to rise and fall through the connection of the guide rod 21.

[0036] The frame 1 has two symmetrical threaded connections with adjusting bolts 13. Half-rings 14 are rotatably connected to the opposite sides of the two adjusting bolts 13. Ear plates 15 are fixed to both ends of the half-rings 14. A horizontal bar 16 is fixed to the frame 1. The horizontal bar 16 is horizontally arranged, and its length is parallel to the adjusting bolts 13. The horizontal bar 16 passes through the ear plates 15 and is slidably connected to them. Rotating the adjusting bolts 13 allows the two half-rings 14 to move closer or further apart, thereby clamping or loosening the sidewall of the water inlet. The horizontal bar 16 prevents the half-rings 14 from rotating and improves their sliding stability.

[0037] Reference Figure 4 In this embodiment, the support structure 3 consists of four sets. The support structure 3 includes an upper support 31 fixed to the frame 1 and a lower support 32 slidably connected to the upper support 31. The upper support 31 is inclined, and a sliding groove is provided on the inner side of the upper support 31 for the lower support 32 to slide. The upper support 31 is threadedly connected to a fixing bolt 33, and the lower support 32 has multiple fixing holes 34 along its length for the fixing bolt 33 to pass through. After loosening the fixing bolt 33, the total length of the support structure 3 can be adjusted by pulling the lower support 32. The relative positions of the upper support 31 and the lower support 32 are fixed by screwing the fixing bolt 33 into one of the fixing holes 34.

[0038] A horizontally positioned base plate 35 is fixed to the bottom end of the lower support leg 32, and bolt holes 36 are provided on the base plate 35. The base plate 35 can improve the stability of the support leg structure 3 in contact with the installation position, and bolts can be inserted into the bolt holes 36 to fix the base plate 35 in the installation position and prevent displacement.

[0039] The implementation principle of the tundish nozzle lifting and positioning device according to an embodiment of this application is as follows: The tundish nozzle is inserted into the mounting ring 2 and the frame 1 from top to bottom. The adjusting bolt 13 is rotated to move the half ring 14 to clamp and position the tundish nozzle. The position of the whole device is moved so that the upper end of the tundish nozzle corresponds to the outlet position of the molten steel in the ladle. Then, the device is installed through the support structure 3. After installation, if there is a gap between the upper end of the tundish nozzle and the ladle, the mounting ring 2 is moved upward by rotating the outer ring 11 to make the upper end of the tundish nozzle reliably contact the ladle, improving stability and strengthening the seal. There is no need to readjust the support structure 3, making it more convenient to use.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lifting and positioning device for a central inlet, characterized in that: The device includes a frame (1) and an installation ring (2) for placing the water inlet of the intermediate package. The frame (1) is provided with several support structures (3) around its circumference. A guide rod (21) is fixed at the bottom of the installation ring (2). The guide rod (21) passes through the frame (1) and is slidably connected to the frame (1). An inner ring (22) is fixed at the lower end of the guide rod (21). An outer ring (11) is rotatably connected to the frame (1). The inner wall of the outer ring (11) is threadedly connected to the outer wall of the inner ring (22).

2. The lifting and positioning device for the intermediate water inlet according to claim 1, characterized in that: Multiple gripping rods (12) are fixed to the bottom end of the outer ring (11).

3. The lifting and positioning device for the intermediate water inlet according to claim 1, characterized in that: The frame (1) is symmetrically threaded with two adjusting bolts (13), and a half ring (14) is rotatably connected to one side of the two adjusting bolts (13) facing each other.

4. The lifting and positioning device for the intermediate water inlet according to claim 3, characterized in that: The two ends of the semi-ring (14) are fixed with ear plates (15), and the frame (1) is fixed with a crossbar (16). The crossbar (16) passes through the ear plate (15) and is slidably connected to the ear plate (15).

5. The lifting and positioning device for the intermediate water inlet according to claim 1, characterized in that: Four guide rods (21) are evenly arranged along the circumference of the frame (1).

6. The lifting and positioning device for the intermediate water inlet according to claim 1, characterized in that: The support structure (3) includes an upper support (31) fixed to the frame (1) and a lower support (32) slidably connected to the upper support (31).

7. The lifting and positioning device for the intermediate water inlet according to claim 6, characterized in that: The upper support leg (31) is threaded with a fixing bolt (33), and the lower support leg (32) has multiple fixing holes (34) along its length for the fixing bolt (33) to pass through.

8. The lifting and positioning device for the intermediate water inlet according to claim 6, characterized in that: The bottom end of the lower support leg (32) is fixed with a horizontally arranged base plate (35), and the base plate (35) is provided with bolt holes (36).

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