Ladle shroud

Abstract

The utility model relates to molten steel pouring equipment technical field, concretely is molten steel flow control auxiliary, including adjusting lever, the bottom of adjusting lever is fixed in the upper end of stopper through the clamp, and the upper end of adjusting lever is installed with the knuckle screw rod, and the upper end of knuckle screw rod is installed on the actuating mechanism through the lock nut, and the clamp includes first half ring and second half ring, and one end of first half ring and second half ring is hinged through the hinge, and the other end of first half ring is installed with the U -shaped clamping groove, and the other end of second half ring is installed with the U -shaped seat, and the knuckle screw rod is rotatably connected in the U -shaped seat, when first half ring and second half ring close, rotate knuckle screw rod and card into U -shaped clamping groove, and lock through adjusting nut. In this molten steel flow control auxiliary, through the clamp design of adjusting lever bottom, can firmly with the upper end of stopper fixed auxiliary, even if the stopper appears refractory pulverization or nut loosening under high temperature and long time movement, also can keep the stable connection between auxiliary and stopper.

Description

Technical Field

[0001] This utility model relates to the technical field of molten steel pouring equipment, and more specifically, to a molten steel flow control auxiliary device. Background Technology

[0002] In the continuous casting process, stopper rod control is a crucial step. It primarily regulates the flow rate of molten steel from the tundish into the mold, ensuring the stability of the continuous casting process and the quality of the cast billet. Traditionally, steel plants use stopper rods to control the flow of molten steel. These rods are typically made of Mg-AL-Zr refractory material and have pre-embedded nuts. A rigid connection between the rod and the nut connects the stopper rod to the actuator. The up-and-down movement of the actuator controls the opening of the stopper rod, thereby ensuring a smooth pouring of steel.

[0003] However, in actual production, due to the long pouring time of up to 35 hours, the stopper rod connecting mechanism is constantly in motion, and under high temperatures, the refractory material may pulverize, causing the pre-installed nuts to easily loosen. Once the nuts loosen, the flow control performance deteriorates, and it may even lead to flow blockage and production stoppage, which not only affects the stability of production but also increases production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a molten steel flow control auxiliary device to solve the problem mentioned in the background art that, in the actual production process, due to the pouring time of up to 35 hours, the stopper rod connecting mechanism is constantly in motion, and under the action of high temperature, the refractory material will pulverize, which will cause the reserved nut to easily loosen.

[0005] To achieve the above objectives, this utility model provides a molten steel flow control auxiliary device, including an adjusting rod. The bottom end of the adjusting rod is fixed to the upper end of a stopper rod by a clamp. The upper end of the adjusting rod is fitted with a threaded end, and the upper end of the threaded end is mounted on an actuator by a locking nut. The clamp includes a first half-ring and a second half-ring. One end of the first half-ring and the second half-ring are hinged together by a hinge. The other end of the first half-ring is fitted with a U-shaped groove, and the other end of the second half-ring is fitted with a U-shaped seat. A hinged screw is rotatably connected inside the U-shaped seat. When the first half-ring and the second half-ring are closed, the hinged screw is rotated and engaged in the U-shaped groove, and locked by the adjusting nut.

[0006] Preferably, a nut is embedded in the top of the stopper rod, and a stopper rod screw is installed on the nut. The upper end of the stopper rod screw is locked to the bracket of the actuator by a nut.

[0007] Preferably, a washer is provided at the bottom of the locking nut.

[0008] Preferably, the upper end of the threaded end passes through the bracket of the actuator and is threadedly connected to the lock nut.

[0009] Preferably, a fixed shaft is installed inside the U-shaped seat, and a bushing is fitted on the fixed shaft. The outer wall of the bushing is welded and fixed to one end of the hinge screw.

[0010] Preferably, the outer diameter of the adjusting nut is greater than the inner wall width of the U-shaped groove, and the inner wall width of the U-shaped groove is greater than the diameter of the adjusting nut.

[0011] Preferably, a padding layer is bonded and fixed to the inner wall of the clamp.

[0012] Preferably, the adjusting rod is welded and fixed to the clamp, and their positions are perpendicular to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this molten steel flow control auxiliary device, the clamp design at the bottom of the adjusting rod securely fixes the auxiliary device to the upper end of the stopper rod. Even if the stopper rod experiences refractory powdering or nut loosening under high temperature and prolonged operation, a stable connection between the auxiliary device and the stopper rod can be maintained. The clamp adopts a hinged design of the first and second half-rings, combined with a U-shaped groove and a locking mechanism of the hinged screw, making installation and disassembly extremely convenient and the locking effect reliable.

[0015] The upper end of the auxiliary device's adjusting rod is mounted on the actuator via a hinged screw and a locking nut, thus re-establishing a rigid connection between the actuator and the stopper rod. This connection method effectively transmits the actuator's motion, ensuring precise control of the stopper rod's opening and thereby improving the flow control performance of the molten steel.

[0016] The auxiliary device is lightweight, easy to install, and suitable for full-size installations, making its widespread adoption and application in steel plants easy. By using the auxiliary device, a rigid connection can be quickly re-established after the nut becomes loose, avoiding blockages and production stoppages, thereby reducing production costs and maintenance expenses.

[0017] The stable connection and precise flow control performance of the auxiliary device help reduce unexpected situations and accident risks in the production process, thereby improving the production safety of the steel plant. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram illustrating the use of this utility model;

[0020] Figure 3 This is a schematic diagram of the opening structure of the clamp in this utility model;

[0021] Figure 4 This is a schematic diagram of the locking structure of the clamp in this utility model;

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Adjusting rod; 2. Clamp; 21. First half ring; 211. U-shaped groove; 22. Second half ring; 221. U-shaped seat; 222. Fixed shaft; 223. Bushing; 224. Sliding screw; 225. Adjusting nut; 23. Shim; 3. Threaded end; 4. Locking nut; 41. Washer; 5. Stopper rod; 6. Stopper rod screw; 7. Actuator. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a steel flow control auxiliary device, such as... Figures 1-4 As shown, the device includes an adjusting rod 1. The bottom end of the adjusting rod 1 is fixed to the upper end of the stopper rod 5 by a clamp 2. The upper end of the adjusting rod 1 is fitted with a threaded end, which is mounted on the actuator 7 by a locking nut 4. The clamp 2 includes a first half-ring 21 and a second half-ring 22. One end of the first half-ring 21 and the second half-ring 22 are hinged together by a hinge. The other end of the first half-ring 21 is fitted with a U-shaped groove 211, and the other end of the second half-ring 22 is fitted with a U-shaped seat 221. A hinged screw 224 is rotatably connected inside the U-shaped seat 221. When the first half-ring 21 and the second half-ring 22 are closed, the hinged screw 224 is rotated and engages in the U-shaped groove 211, and is locked by an adjusting nut 225. The clamp 2 securely fixes the bottom end of the adjusting rod 1 to the upper end of the stopper rod 5, ensuring a stable connection between the auxiliary device and the stopper rod. The clamp 2 consists of a first half-ring 21 and a second half-ring 22, with one end hinged for easy installation and disassembly.

[0026] The other end of the first half-ring 21 is equipped with a U-shaped groove 211, and the other end of the second half-ring 22 is equipped with a U-shaped seat 221. A hinged screw 224 is rotatably connected inside the U-shaped seat 221. When the first half-ring 21 and the second half-ring 22 are closed, the hinged screw 224 is rotated and engaged in the U-shaped groove 211, and then locked by the adjusting nut 225, achieving quick and reliable locking of the clamp 2. The upper end of the adjusting rod 1 is equipped with a threaded end, and the upper end of the threaded end is mounted on the actuator 7 by a locking nut 4, forming a rigid connection between the actuator 7 and the adjusting rod 1. This connection method ensures that the movement of the actuator can be accurately transmitted to the stopper rod, achieving precise control of the stopper rod opening.

[0027] In this embodiment, a nut is embedded in the top of the stopper rod 5, and a stopper rod screw 6 is mounted on the nut. The upper end of the stopper rod screw 6 is locked to the bracket of the actuator 7 by a nut. The stopper rod 5 is connected to the stopper rod screw 6 through the embedded nut, and the stopper rod screw 6 is then locked to the bracket of the actuator 7 by a nut. This connection method ensures a stable connection between the stopper rod 5 and the actuator 7, enabling the actuator 7 to accurately control the opening degree of the stopper rod 5, thereby achieving precise regulation of the molten steel flow rate. This part of the structure is a traditional installation and fixing structure for the stopper rod 5. In this application, it works in conjunction with a molten steel flow control auxiliary device to achieve the stability of the stopper rod.

[0028] Specifically, a washer 41 is provided at the bottom of the locking nut 4. The washer 41 at the bottom of the locking nut 4 can increase the contact area between the locking nut 4 and the bracket of the actuator 7, distribute the pressure, prevent damage to the bracket or nut during the locking process, and improve the stability and reliability of locking.

[0029] Furthermore, the upper end of the threaded end passes through the bracket of the actuator 7 and is threadedly connected to the locking nut 4. This connection method is simple and reliable, easy to install and disassemble, and ensures a rigid connection between the adjusting rod 1 and the actuator 7, so that the movement of the actuator 7 can be accurately transmitted to the adjusting rod 1.

[0030] Furthermore, a fixed shaft 222 is installed inside the U-shaped seat 221, and a bushing 223 is fitted onto the fixed shaft 222. The outer wall of the bushing 223 is welded and fixed to one end of the hinge screw 224. The fixed shaft 222 and bushing 223 inside the U-shaped seat 221 provide stable support and a rotation axis for the hinge screw 224. The welded and fixed connection between one end of the hinge screw 224 and the outer wall of the bushing 223 ensures the stability and reliability of the hinge screw 224 during rotation, thereby guaranteeing the locking effect of the clamp 2.

[0031] Furthermore, the outer diameter of the adjusting nut 225 is larger than the inner wall width of the U-shaped groove 211, and the inner wall width of the U-shaped groove 211 is larger than the diameter of the adjusting nut 225. The larger outer diameter of the adjusting nut 225 ensures that the adjusting nut 225 can be securely engaged in the U-shaped groove 211 when locked, preventing it from easily falling out. Simultaneously, the larger inner wall width of the U-shaped groove 211 provides sufficient rotation space for the adjusting nut 225, facilitating adjustment and locking.

[0032] Furthermore, a padding layer 23 is bonded and fixed to the inner wall of the clamp 2. The padding layer 23 bonded and fixed to the inner wall of the clamp 2 can increase the contact area between the clamp 2 and the stopper 5, distribute the pressure, prevent the clamp 2 from damaging the stopper 5 or the clamp 2 itself during the locking process, and at the same time improve the locking effect and stability of the clamp 2.

[0033] Furthermore, the adjusting rod 1 is welded and fixed to the clamp 2, and their positions are perpendicular to each other. The welding and fixing of the adjusting rod 1 and the clamp 2 ensures a firm connection between the adjusting rod 1 and the clamp 2; and their perpendicular positions allow the adjusting rod 1 to maintain a stable direction and force when transmitting the movement of the actuator 7, thereby improving the overall performance and stability of the molten steel flow control auxiliary device.

[0034] In use, the bottom end of the adjusting rod 1 is first fixed to the upper end of the stopper rod 5 by a clamp 2. The clamp 2 consists of a first half-ring 21 and a second half-ring 22, with one end hinged for easy installation and disassembly. During installation, the first half-ring 21 and the second half-ring 22 are closed around the upper end of the stopper rod 5, and then the hinged screw 224 on the second half-ring 22 is rotated to engage with the U-shaped groove 211 on the first half-ring 21. The clamp 2 is then locked quickly and reliably by adjusting the nut 225, thus ensuring a stable connection between the adjusting rod 1 and the stopper rod 5.

[0035] The upper end of the adjusting rod 1 is fitted with a threaded end, the upper end of which passes through the bracket of the actuator 7 and is threadedly connected to the locking nut 4. This connection method is simple and reliable, easy to install and disassemble, and ensures a rigid connection between the adjusting rod 1 and the actuator 7. A washer 41 is provided at the bottom of the locking nut 4, which increases the contact area between the locking nut 4 and the bracket of the actuator 7, disperses pressure, prevents damage to the bracket or nut during the locking process, and improves the stability and reliability of the locking.

[0036] A nut is embedded in the top of the stopper rod 5, and a stopper rod screw 6 is mounted on the nut. The upper end of the stopper rod screw 6 is locked to the bracket of the actuator 7 by a nut. This connection method ensures a stable connection between the stopper rod 5 and the actuator 7. When the actuator 7 moves, it can accurately control the opening degree of the stopper rod 5, thereby achieving precise adjustment of the molten steel flow rate.

[0037] A fixed shaft 222 is installed inside the U-shaped seat 221, and a bushing 223 is fitted onto the fixed shaft 222. The outer wall of the bushing 223 is welded and fixed to one end of the hinge screw 224, providing stable support and a rotation axis for the hinge screw 224. The outer diameter of the adjusting nut 225 is larger than the inner wall width of the U-shaped groove 211, ensuring that the adjusting nut 225 can be firmly locked into the U-shaped groove 211 when tightened, and is not easy to fall off. At the same time, the inner wall width of the U-shaped groove 211 is larger than the diameter of the adjusting nut 225, providing sufficient rotation space for the adjusting nut 225, facilitating adjustment and tightening.

[0038] The inner wall of clamp 2 is bonded with a padding layer 23, which increases the contact area between clamp 2 and stopper 5 and disperses pressure. This prevents clamp 2 from damaging stopper 5 or clamp 2 itself during the locking process, and at the same time improves the locking effect and stability of clamp 2.

[0039] The adjusting rod 1 is welded and fixed to the clamp 2, and their positions are perpendicular to each other. This connection method ensures a firm connection between the adjusting rod 1 and the clamp 2, while also allowing the adjusting rod 1 to maintain a stable direction and force when transmitting the movement of the actuator 7. This improves the overall performance and stability of the molten steel flow control auxiliary device, ensuring the smooth progress of the molten steel pouring process.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A molten steel flow control auxiliary device, comprising an adjusting rod (1), characterized in that: The bottom end of the adjusting rod (1) is fixed to the upper end of the stopper rod (5) by a clamp (2). The upper end of the adjusting rod (1) is equipped with a threaded end (3). The upper end of the threaded end (3) is installed on the actuator (7) by a locking nut (4). The clamp (2) includes a first half ring (21) and a second half ring (22). One end of the first half ring (21) and the second half ring (22) are hinged by a hinge. The other end of the first half ring (21) is equipped with a U-shaped groove (211). The other end of the second half ring (22) is equipped with a U-shaped seat (221). A hinged screw (224) is rotatably connected inside the U-shaped seat (221). When the first half ring (21) and the second half ring (22) are closed, the hinged screw (224) is rotated and inserted into the U-shaped groove (211), and locked by an adjusting nut (225).

2. The molten steel flow control auxiliary device according to claim 1, characterized in that: The top of the stopper rod (5) is fitted with a nut, and the stopper rod screw (6) is installed on the nut. The upper end of the stopper rod screw (6) is locked to the bracket of the actuator (7) by a nut.

3. The molten steel flow control auxiliary device according to claim 1, characterized in that: A washer (41) is provided at the bottom of the locking nut (4).

4. The molten steel flow control auxiliary device according to claim 1, characterized in that: The upper end of the threaded end (3) passes through the bracket of the actuator (7) and is threadedly connected to the locking nut (4).

5. The molten steel flow control auxiliary device according to claim 1, characterized in that: A fixed shaft (222) is installed inside the U-shaped seat (221), and a bushing (223) is fitted on the fixed shaft (222). The outer wall of the bushing (223) is welded and fixed to one end of the hinge screw (224).

6. The molten steel flow control auxiliary device according to claim 1, characterized in that: The outer diameter of the adjusting nut (225) is greater than the inner wall width of the U-shaped groove (211), and the inner wall width of the U-shaped groove (211) is greater than the diameter of the adjusting nut (225).

7. The molten steel flow control auxiliary device according to claim 1, characterized in that: The inner wall of the clamp (2) is bonded with a pad (23).

8. The molten steel flow control auxiliary device according to claim 1, characterized in that: The adjusting rod (1) is welded and fixed to the clamp (2), and their positions are perpendicular to each other.

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