Nozzle seating brick for refining steel ladle

Abstract

The utility model belongs to the technical field of ladle nozzle seating bricks, and discloses a refined ladle nozzle seating brick which comprises a steel brick, a connecting box is fixedly connected in the steel brick, a connecting plate is fixedly connected to the inner wall of the connecting box, a telescopic assembly used for contracting is slidably connected in the connecting box, and the telescopic assembly is fixedly connected to the inner wall of the connecting box. The top of the connecting plate is fixedly connected with two springs, the tops of the two springs are fixedly connected with check blocks correspondingly, the exterior of the steel brick is fixedly connected with a high-temperature-resistant assembly used for protection, the high-temperature-resistant assembly comprises a protection layer, and the interior of the protection layer is fixedly connected to the exterior of the steel brick. And a heat conduction layer is fixedly connected to the interior of the protection layer. According to the utility model, the service life is prolonged, the safe and stable operation of the steel ladle in the refining process is ensured, the mechanical impact force of molten steel on the nozzle seating brick and the nozzle is greatly increased, and the problems of crack, damage and the like of the nozzle seating brick and the nozzle can be avoided by adding buffer.

Description

Technical Field

[0001] The utility model relates to the technical field of ladle nozzle seat bricks, in particular to a refining ladle nozzle seat brick. Background Art

[0002] Nozzle bricks for refined ladle steelmaking are critical refractory materials in the steelmaking process. They are primarily located at the bottom of the ladle, serving as the outlet channel for molten steel to flow from the ladle to the continuous casting machine. The design and material of the nozzle bricks directly impact the smooth flow of molten steel, the ladle's thermal insulation performance, and the efficiency and safety of the entire steelmaking process.

[0003] Chinese patent CN211939029U discloses a ladle nozzle block comprising a cylindrical body with open ends, an interior channel for molten steel, and a plurality of vortex barriers spaced circumferentially at one axial end. Each vortex barrier is integral with the body and extends axially toward the interior of the ladle. A positioning step is provided at the other axial end of the body that engages with the ladle bottom wall. The ladle nozzle block described in this application can mitigate the generation of vortices in molten steel, reduce slag discharge, and increase molten steel yield.

[0004] In the existing technology, some ladle nozzle seat bricks are difficult to buffer. Long-term high-intensity impact on the ladle nozzle seat bricks that are difficult to buffer will cause cracks, breakage and other problems in the nozzle seat bricks and the nozzle, shortening their service life. Accidents such as nozzle seat brick rupture or nozzle detachment may occur during the production process, affecting the normal production and even causing safety accidents. Therefore, a refined ladle nozzle seat brick is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to address the shortcomings of the existing technology and provide a water nozzle seat brick for a refined steel ladle, aiming to improve the problem that the water nozzle seat brick for a refined steel ladle in the existing technology lacks an effective buffering mechanism and is easily damaged under long-term high-intensity impact. Frequent cracks and breakage not only shorten the service life, but also lead to production interruptions and increased safety risks.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A nozzle seat brick for a refined steel ladle, comprising a steel brick, wherein a connection box is fixedly connected to the interior of the steel brick, a connection plate is fixedly connected to the inner wall of the connection box, a telescopic assembly for contraction is slidably connected to the interior of the connection box, two springs are fixedly connected to the top of the connection plate, and a stopper is fixedly connected to the top of each of the two springs, and a high-temperature resistant assembly for protection is fixedly connected to the exterior of the steel brick;

[0008] As a further description of the above technical solution:

[0009] The high temperature resistant component includes a protective layer, the interior of the protective layer is fixedly connected to the exterior of the steel brick, the interior of the protective layer is fixedly connected to a heat conducting layer, the interior of the heat conducting layer is fixedly connected to a corrosion layer, and the interior of the corrosion layer is fixedly connected to a high temperature resistant layer;

[0010] As a further description of the above technical solution:

[0011] The telescopic assembly includes a connecting column, two connecting columns are slidably connected to the interior of the connecting box, circular baffles are fixedly connected to the tops of the two connecting columns, and an arc-shaped connecting block is fixedly connected to the interior of the connecting box;

[0012] As a further description of the above technical solution:

[0013] The tops of the two stoppers are respectively fixedly connected with connecting columns, and a second card slot is provided inside the connecting box;

[0014] As a further description of the above technical solution:

[0015] An arc-shaped groove is provided inside the arc-shaped connecting block, and a groove is provided inside the steel brick.

[0016] The beneficial effects of the present invention are:

[0017] (1) The utility model realizes that the telescopic assembly inside the connecting box will perform corresponding contraction actions according to the pressure of the molten steel. The circular baffle squeezes the connecting column to contract, and the spring contracts to absorb part of the pressure. When the pressure of the molten steel decreases, the spring will rely on its own elastic recovery force to push the baffle upward, thereby extending its service life and ensuring the safe and stable operation of the ladle during the refining process. The mechanical impact force of the molten steel on the nozzle seat brick and the nozzle will be greatly increased. Adding a buffer can avoid cracks, breakage and other problems in the nozzle seat brick and the nozzle, shortening their service life and reducing accidents such as nozzle seat brick rupture or nozzle detachment during production, without affecting the normal progress of production and reducing safety accidents.

[0018] (2) The utility model has the following advantages: the high temperature resistant layer can withstand extremely high temperatures without obvious deformation or damage due to its special material properties; the corrosion resistant material of the corrosion layer can chemically react with the corrosive components or form a protective film; the heat conductive layer quickly conducts heat away and dissipates heat to the surrounding environment by heat conduction, thereby reducing the temperature inside the nozzle seat brick; and the protective layer can effectively protect the internal structure from mechanical damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of a nozzle seat brick for a refining ladle proposed in the utility model;

[0020] Figure 2 This is a structural diagram of a circular baffle of a nozzle seat brick for a refining ladle proposed in the utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 The utility model is a structural schematic diagram of the corrosion layer of the nozzle seat brick of the refining ladle.

[0023] Legend:

[0024] 1. Steel brick; 2. Groove; 3. Connecting box; 4. Connecting plate; 5. Spring; 6. Stopper; 7. Connecting column; 8. Circular baffle; 9. Arc-shaped connecting block; 10. Arc-shaped groove; 11. Second slot; 12. High-temperature resistant layer; 13. Protective layer; 14. Heat-conducting layer; 15. Corrosion layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] Example 1

[0028] Reference Figures 1 to 3The present invention provides an embodiment of a nozzle support brick for a refined steel ladle, comprising a steel brick 1 made of high-temperature-resistant steel or other suitable metal material, which provides external frame support. A connecting box 3 is fixedly connected to the interior of the steel brick 1 and embedded in a cavity within the steel brick 1, accommodating and positioning a telescopic assembly and a spring 5 buffer mechanism. A connecting plate 4 is fixedly connected to the inner wall of the connecting box 3 and secured within the box 3, securing the spring 5 and supporting the telescopic mechanism. A telescopic assembly for retraction is slidably connected to the interior of the connecting box 3. Located within the box 3, it can slide under external forces, absorbing and buffering external impacts by changing its length. Two springs 5 ​​are fixedly connected to the top of the connecting plate 4, with their ends connected to the connecting plate 4 and to a stopper 6, respectively. When the telescopic assembly moves, the springs 5 ​​absorb energy through elastic deformation, mitigating impact. A stopper 6 is fixedly attached to the top of each spring 5, mounted on the top of the spring 5 and directly contacting the telescopic assembly or other components, limiting excessive displacement of the telescopic assembly and transmitting pressure. A high-temperature-resistant component is fixedly attached to the exterior of the steel brick 1 for protection.

[0029] Example 2

[0030] Reference Figure 1 、 Figure 4 The high-temperature resistant component includes a protective layer 13. The interior of the protective layer 13 is fixedly connected to the exterior of the steel brick 1. As the outermost protective structure, the protective layer 13 has excellent mechanical strength and wear resistance. The protective layer 13 is tightly wrapped around the exterior of the steel brick 1, which can effectively resist external impact and wear, and provide the first solid protective barrier for the internal structure. The interior of the protective layer 13 is fixedly connected to a heat-conducting layer 14, which can effectively balance the temperature distribution, so that the entire nozzle seat brick maintains a relatively stable temperature state under high temperature conditions. The interior of the heat-conducting layer 14 is fixedly connected to a corrosion layer 15, which is made of corrosion-resistant material and can maintain its structural integrity and stability in harsh chemical environments, preventing the nozzle seat brick from being damaged by corrosion. The interior of the corrosion layer 15 is fixedly connected to a high-temperature resistant layer 12. The high-temperature resistant layer 12 can effectively resist high-temperature erosion, ensuring that the nozzle seat brick will not deform, soften or crack under high-temperature conditions. The presence of the high-temperature resistant layer 12 ensures the reliability and stability of the nozzle seat brick under extreme high-temperature conditions.

[0031] Example 3

[0032] Reference Figures 2 to 4The telescopic component includes a connecting column 7. The interior of the connecting box 3 is slidably connected to two connecting columns 7. The interior of the connecting box 3 is slidably connected to two connecting columns 7. The two connecting columns 7 can slide smoothly in the connecting box 3 to achieve the telescopic function. The tops of the two connecting columns 7 are fixedly connected with a circular baffle 8. The area of ​​the circular baffle 8 is relatively large, which can disperse the pressure of the molten steel to a certain extent and reduce the direct impact on the connecting columns 7. The interior of the connecting box 3 is fixedly connected with an arc-shaped connecting block 9. The shape design of the arc-shaped connecting block 9 can better cooperate with other components to achieve stable connection and support, and the solution slides through the inside of the arc-shaped connecting block 9. The tops of the two blocks 6 are respectively fixedly connected with connecting columns 7. The block 6 is tightly connected to the connecting column 7 and can move up and down with the movement of the connecting column 7 under the action of the spring 5.

[0033] The block 6 serves to limit the range of motion of the connecting column 7, preventing the connecting column 7 from excessively extending or retracting. A second card slot 11 is provided inside the connecting box 3. The size and shape of the second card slot 11 match the connecting column 7, and can provide a stable support point when the connecting column 7 moves to a specific position, ensuring that the connecting column 7 does not shake at will. An arc-shaped groove 10 is provided inside the arc-shaped connecting block 9. The surface of the arc-shaped groove 10 is smooth, which can reduce the friction resistance between the molten steel and the arc-shaped connecting block 9 and improve the flow efficiency of the molten steel. A groove 2 is provided inside the steel brick 1. The function of the groove 2 can be to install other components, or to reduce the weight of the steel brick 1 and improve the performance of the steel brick 1.

[0034] Working steps

[0035] Step 1. First, the telescopic component inside the connecting box 3 will perform corresponding contraction actions according to the pressure of the molten steel. When the solution is poured in, it first falls on the top of the circular baffle 8, and the circular baffle 8 squeezes the connecting column 7 to contract. The spring 5 will also deform under the action of pressure and absorb part of the pressure. When the pressure of the molten steel decreases, the spring 5 will rely on its own elastic recovery force to push the block 6 upward, thereby helping the telescopic component to return to its initial position. Such a design can effectively protect the nozzle seat bricks, extend their service life, and ensure the safe and stable operation of the ladle during the refining process. The mechanical impact force of the molten steel on the nozzle seat bricks and the nozzle will be greatly increased. Adding a buffer can avoid cracks, breakage and other problems in the nozzle seat bricks and the nozzle, shorten their service life, and reduce accidents such as nozzle seat brick rupture or nozzle falling off during production. It does not affect the normal production and reduces safety accidents.

[0036] Step 2. Secondly, the high-temperature resistant layer 12 can withstand extremely high temperatures without obvious deformation or damage due to its special material properties. At the same time, the high-temperature resistant layer 12 transfers part of the heat to the corrosion layer 15, but because the material of the corrosion layer 15 has good thermal insulation properties, most of the heat is blocked inside the high-temperature resistant layer 12, reducing the thermal impact on the external structure. The heat-conducting layer 14 quickly conducts the heat away and dissipates the heat to the surrounding environment by heat conduction, thereby reducing the temperature inside the nozzle seat brick. The corrosion layer 15 plays a role in resisting the erosion of corrosive substances. The corrosion-resistant material of the corrosion layer 15 can react chemically with the corrosive components or form a protective film to prevent the corrosive substances from further penetrating into the internal structure, while the protective layer 13 is always under external impact and wear. Whether in the transportation of the ladle or in the injection and outflow of molten steel, the protective layer 13 can effectively protect the internal structure from mechanical damage.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A nozzle block for a refining ladle, comprising a steel brick, characterized in that: The interior of the steel brick is fixedly connected to a connecting box, the inner wall of the connecting box is fixedly connected to a connecting plate, the interior of the connecting box is slidably connected to a telescopic component for contraction, the top of the connecting plate is fixedly connected to two springs, the tops of the two springs are respectively fixedly connected to blocks, and the outside of the steel brick is fixedly connected to a high-temperature resistant component for protection.

2. The nozzle block for a refining ladle according to claim 1, characterized in that: The high temperature resistant component includes a protective layer, the interior of the protective layer is fixedly connected to the exterior of the steel brick, the interior of the protective layer is fixedly connected to a heat conducting layer, the interior of the heat conducting layer is fixedly connected to a corrosion layer, and the interior of the corrosion layer is fixedly connected to a high temperature resistant layer.

3. The nozzle seat brick for a refining ladle according to claim 1, characterized in that: The telescopic assembly includes a connecting column. Two connecting columns are slidably connected inside the connecting box. Circular baffles are fixedly connected to the tops of the two connecting columns. An arc-shaped connecting block is fixedly connected to the inside of the connecting box.

4. The nozzle seat brick for a refining ladle according to claim 1, characterized in that: The tops of the two stoppers are respectively fixedly connected with connecting columns, and a second card slot is provided inside the connecting box.

5. The nozzle seat brick for a refining ladle according to claim 3, characterized in that: An arc-shaped groove is provided inside the arc-shaped connecting block, and a groove is provided inside the steel brick.

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