Self-tightening type sealing nozzle steel ring

Abstract

The utility model relates to the technical field of metallurgical continuous casting equipment, in particular to a self-tightening type sealing nozzle steel ring which comprises a steel ring body, a plurality of sets of self-locking assemblies are installed on one side of the steel ring body, and the self-locking assemblies are circumferentially arranged on the steel ring body. The self-locking assembly comprises a mounting block fixedly mounted on the side face of the steel ring body, a moving rod, an arc-shaped elastic piece fixedly mounted at one end of the moving rod, a connecting block fixedly mounted at the other end of the moving rod and a transmission assembly used for driving the moving rod to move, and a moving hole is formed in the mounting block. The moving rod is slidably mounted in the moving hole, the moving rod is sleeved with a telescopic spring, and the two ends of the telescopic spring are fixedly connected with the mounting block and the connecting block respectively. Through mutual cooperation of the mounting block, the moving rod, the transmission assembly and the elastic piece, the steel ring generates larger holding force on the water gap, so that self-tightening sealing is achieved, molten steel leakage is effectively prevented, and the quality of steel billets is improved.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical continuous casting equipment technology, and in particular to a self-tightening sealing nozzle steel ring. Background Technology

[0002] In the continuous casting process of the metallurgical industry, the nozzle is a key channel for molten steel to flow from the ladle to the tundish or from the tundish to the crystallizer. Its sealing performance plays a vital role in the smooth operation of the entire continuous casting process and the assurance of product quality. Traditional nozzle sealing methods usually use ordinary steel rings or sealing gaskets.

[0003] During long-term continuous casting, due to factors such as thermal expansion and the impact force of molten steel, ordinary sealing structures may develop gaps, leading to molten steel leakage. This not only affects the quality of the cast billet but may also cause production accidents and equipment damage. Utility Model Content

[0004] The purpose of this utility model is to address the following shortcomings in the existing technology: during long-term continuous casting, due to factors such as thermal expansion and the impact force of molten steel, ordinary sealing structures may develop gaps, leading to molten steel leakage, which not only affects the quality of the cast billet but may also cause production accidents and equipment damage. Therefore, a self-tightening sealing gate steel ring is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-tightening sealing gate steel ring includes a steel ring body, wherein multiple sets of self-locking components are installed on one side of the steel ring body, and the multiple sets of self-locking components are circumferentially arranged on the steel ring body.

[0007] The self-locking assembly includes a mounting block fixedly installed on the side of the steel ring body, a moving rod, an arc-shaped elastic sheet fixedly installed at one end of the moving rod, a connecting block fixedly installed at the other end of the moving rod, and a transmission assembly for driving the moving rod to move. The mounting block has a moving hole, the moving rod is slidably installed in the moving hole, and a telescopic spring is sleeved on the moving rod. The two ends of the telescopic spring are fixedly connected to the mounting block and the connecting block, respectively.

[0008] Preferably, the transmission assembly includes a movable ring that is slidably fitted onto the steel ring body via an adjusting component and a plurality of trapezoidal blocks that are circumferentially fixed on the movable ring at equal intervals. The trapezoidal blocks are slidably connected to the connecting blocks via a connecting component.

[0009] Preferably, the connecting assembly includes a slider fixedly mounted on the connecting block and a groove formed on the inclined surface of the trapezoidal block, wherein the slider is slidably mounted in the groove.

[0010] Preferably, the adjusting component includes two threaded rods, two fixing blocks respectively threaded onto the threaded rods, and two adjusting blocks respectively fixedly installed at one end of the two threaded rods. Both fixing blocks are fixedly installed on the steel ring body, and the ends of the two threaded rods away from the adjusting blocks are rotatably connected to the moving ring.

[0011] Preferably, the inner surface of the steel ring body is provided with an installation groove, and the installation groove is filled with a layer of sealing material.

[0012] Preferably, the sealing material layer is composed of a mixture of high-temperature sealant and flexible ceramic fiber, and the surface of the sealing material layer is flush with the inner surface of the steel ring body.

[0013] The beneficial effects of this utility model are as follows:

[0014] The steel ring body is fitted onto the sprue. When the sprue is subjected to internal molten steel pressure or outward force due to thermal expansion, the steel ring exerts a greater clamping force on the sprue through the cooperation of the mounting block, moving rod, transmission assembly and elastic plate, thereby achieving self-tightening sealing, effectively preventing molten steel leakage and improving the quality of steel billets.

[0015] When the steel ring exerts a greater clamping force on the sprue, it will cause the sealing material layer to better fill the gaps that may appear between the sprue and the steel ring, thereby effectively preventing molten steel leakage. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of a self-tightening sealing gate steel ring proposed in this utility model;

[0017] Figure 2 This is a rear-view three-dimensional structural diagram of a self-tightening sealing sprue steel ring proposed in this utility model.

[0018] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged view of the structure at point B in the middle.

[0020] In the diagram: 1. Steel ring body, 2. Mounting block, 3. Moving rod, 4. Elastic sheet, 5. Connecting block, 6. Telescopic spring, 7. Moving ring, 8. Trapezoidal block, 9. Sliding block, 10. Slide groove, 11. Threaded rod, 12. Fixing block, 13. Adjusting block, 14. Sealing material layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 A self-tightening sealing sprue steel ring includes a steel ring body 1. Multiple sets of self-locking components are installed on one side of the steel ring body 1. The multiple sets of self-locking components are circumferentially arranged on the steel ring body 1. The inner diameter of the steel ring body 1 matches the outer diameter of the sprue to ensure a tight fit.

[0023] The self-locking assembly includes a mounting block 2 fixedly mounted on the side of the steel ring body 1, a moving rod 3, an arc-shaped elastic sheet 4 fixedly mounted on one end of the moving rod 3, a connecting block 5 fixedly mounted on the other end of the moving rod 3, and a transmission assembly for driving the moving rod 3 to move. The mounting block 2 has a moving hole, the moving rod 3 is slidably mounted in the moving hole, and a telescopic spring 6 is sleeved on the moving rod 3. The two ends of the telescopic spring 6 are fixedly connected to the mounting block 2 and the connecting block 5, respectively.

[0024] When installing the steel ring, align the steel ring with the sprue and slowly slip it onto the sprue. Then, use a special installation tool to tighten the steel ring so that it fits tightly against the sprue. The transmission assembly then drives the moving rod 3 on the mounting block 2 to move towards the sprue. This moving rod 3 then drives the elastic plate 4 to move towards the sprue until it contacts the sprue and undergoes elastic deformation, thus pre-compressing the elastic plate 4. The amount of pre-compression is calculated and determined based on the working pressure and thermal expansion of the sprue.

[0025] During continuous casting, as molten steel flows into the nozzle, the internal pressure of the nozzle increases. The nozzle may deform outward due to thermal expansion. At this time, the elastic sheet 4 will be further compressed according to the pressure and deformation, which increases the clamping force of the steel ring body 1 on the nozzle, thereby achieving self-tightening sealing, effectively preventing molten steel leakage and improving the quality of the billet.

[0026] The transmission assembly includes a movable ring 7 that is slidably fitted onto the steel ring body 1 via an adjusting component, and multiple trapezoidal blocks 8 that are equidistantly circumferentially fixed on the movable ring 7. The trapezoidal blocks 8 are slidably connected to the connecting block 5 via a connecting component. The connecting component includes a slider 9 fixedly installed on the connecting block 5 and a groove 10 opened on the inclined surface of the trapezoidal block 8. The slider 9 is slidably installed in the groove 10. The adjusting component includes two threaded rods 11, two fixing blocks 12 that are respectively threaded onto the threaded rods 11, and two adjusting blocks 13 that are respectively fixedly installed at one end of the two threaded rods 11. Both fixing blocks 12 are fixedly installed on the steel ring body 1, and the ends of the two threaded rods 11 away from the adjusting blocks 13 are rotatably connected to the movable ring 7.

[0027] When it is necessary to move the moving rod 3, rotate the adjusting block 13 to drive the threaded rod 11 to rotate. Under the action of the fixed block 12, the threaded rod 11 moves towards the moving ring 7, and then drives multiple trapezoidal blocks 8 to move towards the connecting block 5 through the moving ring 7. Under the action of the inclined surface of the trapezoidal block 8, the connecting block 5 can drive the moving rod 3 to move towards the sprue. When the connecting block 5 moves on the trapezoidal block 8, the sliding groove 10 and the slider 9 can effectively reduce the friction between the trapezoidal block 8 and the connecting block 5.

[0028] An installation groove is formed on the inner surface of the steel ring body 1, and a sealing material layer 14 is filled in the installation groove. The sealing material layer 14 is made of a mixture of high-temperature sealant and flexible ceramic fiber. The surface of the sealing material layer 14 is flush with the inner surface of the steel ring body 1. The high-temperature sealant can maintain good adhesion and sealing performance at high temperature, while the flexible ceramic fiber provides a certain degree of elasticity and erosion resistance. The sealing material layer 14 is in close contact with the nozzle surface during initial installation, and can further fill any possible tiny gaps when under pressure, thereby effectively preventing molten steel leakage.

[0029] In this invention, during the continuous casting process, as molten steel flows into the nozzle, the internal pressure of the nozzle increases, and the nozzle may generate outward deformation force due to thermal expansion. At this time, the elastic sheet 4 will be further compressed according to the pressure and deformation, which increases the clamping force of the steel ring body 1 on the nozzle, thereby achieving self-tightening sealing, effectively preventing molten steel leakage and improving the quality of the billet.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-tightening sealing gate steel ring, comprising a steel ring body (1), characterized in that, Multiple sets of self-locking components are installed on one side of the steel ring body (1), and the multiple sets of self-locking components are circumferentially arranged on the steel ring body (1). The self-locking assembly includes a mounting block (2) fixedly mounted on the side of the steel ring body (1), a moving rod (3), an arc-shaped elastic plate (4) fixedly mounted on one end of the moving rod (3), a connecting block (5) fixedly mounted on the other end of the moving rod (3), and a transmission assembly for driving the moving rod (3) to move. The mounting block (2) has a moving hole, and the moving rod (3) is slidably mounted in the moving hole. A telescopic spring (6) is sleeved on the moving rod (3), and the two ends of the telescopic spring (6) are fixedly connected to the mounting block (2) and the connecting block (5) respectively.

2. The self-tightening sealing gate steel ring according to claim 1, characterized in that, The transmission assembly includes a movable ring (7) that is slidably fitted onto the steel ring body (1) by an adjusting component and a plurality of trapezoidal blocks (8) that are equidistantly circumferentially fixed on the movable ring (7). The trapezoidal blocks (8) are slidably connected to the connecting block (5) by a connecting component.

3. The self-tightening sealing gate steel ring according to claim 2, characterized in that, The connecting assembly includes a slider (9) fixedly mounted on the connecting block (5) and a groove (10) opened on the inclined surface of the trapezoidal block (8), wherein the slider (9) is slidably mounted in the groove (10).

4. The self-tightening sealing gate steel ring according to claim 2, characterized in that, The adjusting component includes two threaded rods (11), two fixing blocks (12) respectively threaded onto the threaded rods (11), and two adjusting blocks (13) respectively fixedly installed at one end of the two threaded rods (11). The two fixing blocks (12) are fixedly installed on the steel ring body (1), and the ends of the two threaded rods (11) away from the adjusting blocks (13) are rotatably connected to the moving ring (7).

5. The self-tightening sealing gate steel ring according to claim 1, characterized in that, The inner surface of the steel ring body (1) is provided with an installation groove, and the installation groove is filled with a sealing material layer (14).

6. The self-tightening sealing gate steel ring according to claim 5, characterized in that, The sealing material layer (14) is made of a mixture of high-temperature sealant and flexible ceramic fiber, and the surface of the sealing material layer (14) is flush with the inner surface of the steel ring body (1).

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