A composite water gap base brick convenient to dismount the inner container
By introducing positioning blocks and guide groove structures into the sprue seat brick, combined with high-temperature resistant materials, the inner liner of the sprue seat brick can be easily disassembled and assembled, solving the problems of wear and high replacement costs of the sprue seat brick, and improving service life and disassembly and assembly efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU GAOXIN HIGH TEMPERATURE NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-05
AI Technical Summary
The existing nozzle seat bricks are easily worn and corroded by the high temperature of molten steel during the steel ladle connection process, and replacement requires the entire brick to be replaced, which increases maintenance costs.
The design incorporates a combination of positioning blocks, vertical guide grooves, arc-shaped guide grooves, and positioning guide grooves to facilitate easy assembly and disassembly of the inner liner of the seat brick from the main body. The design also incorporates aluminum zirconium carbon materials and zirconium oxide coating to enhance wear resistance.
It simplifies the inner tank replacement process, reduces maintenance costs, extends the service life of the sprue seat bricks, and improves disassembly and assembly efficiency.
Smart Images

Figure CN224322354U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of water inlet seat bricks, specifically to a composite water inlet seat brick that facilitates the disassembly and assembly of the inner liner. Background Technology
[0002] In the steel smelting industry, the ladle, as a crucial piece of equipment for holding molten steel, plays a vital role, with its bottom nozzle seat bricks serving a critical function. These bricks not only form the direct foundation of the ladle, acting as a channel for molten steel to exit, but also bear the important responsibility of protecting and positioning the nozzles. However, in practical applications, nozzle seat bricks face several severe challenges. During the ladle's steel receiving process, the high-temperature molten steel exerts a strong impact and scouring effect on the nozzle seat bricks. This scouring not only exacerbates wear on the bricks but can also lead to surface erosion and spalling. This erosion is particularly pronounced in the areas of the nozzle seat bricks most severely affected by the molten steel scouring.
[0003] The patented composite nozzle seat brick for steel ladles, disclosed in announcement number CN215468069U, achieves easy disassembly through a design incorporating a limiting seat brick, a fixing sleeve, a fixing opening, a limiting sleeve, a movable spring, a fixing connecting rod, a movable rod, and a fixing hook. This solves the problem of conventional composite nozzle seat bricks being difficult to disassemble, thus facilitating operation, reducing manufacturing costs, lowering economic consumption in factory processing, and simplifying replacement by operators. This extends the service life of the composite nozzle seat brick, speeds up operation, improves worker efficiency, increases the economic benefits of factory processing, and enhances the practicality of the composite nozzle seat brick for steel ladles.
[0004] Although the patent designs a structure for easy disassembly of the sprue seat brick, such as using a movable spring, a fixed connecting rod, a movable rod, and a fixed hook to facilitate disassembly and replacement of the sprue seat brick, replacing the entire sprue seat brick undoubtedly increases maintenance costs.
[0005] Therefore, it is necessary to invent a composite sprue seat brick that is easy to disassemble and assemble the inner liner to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a composite sprue seat brick that facilitates the disassembly and assembly of the inner liner, thereby solving the problems mentioned above.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a composite sprue seat brick with an easily detachable inner liner, comprising a seat brick body and a seat brick inner liner. The seat brick body has an assembly groove inside, and the seat brick inner liner is rotatably connected to the assembly groove. A positioning block is fixedly connected to the surface of the seat brick inner liner. A vertical guide groove is provided at the top of the seat brick body, and an arc-shaped guide groove and a positioning guide groove are provided on the inner wall of the assembly groove. One end of the arc-shaped guide groove is connected to the bottom end of the vertical guide groove, and the other end of the arc-shaped guide groove is connected to the top end of the positioning guide groove. The vertical guide groove, the arc-shaped guide groove, and the positioning guide groove are all matched with the positioning block.
[0008] By cooperating with the positioning block and the vertical guide groove, the arc-shaped guide groove, and the positioning guide groove, the inner liner of the seat brick is easily disassembled and assembled. This design not only simplifies the replacement process of the inner liner of the seat brick, but also improves the disassembly and assembly efficiency and reduces maintenance costs.
[0009] Preferably, a protruding ring is fixedly connected to the top of the main body of the seat brick, and a buckle is fixedly connected to the top of the inner liner of the seat brick, the buckle engaging with the protruding ring.
[0010] A raised ring design was added to the top of the main body of the seat brick, which is fastened to the cap on the top of the inner liner of the seat brick, further enhancing the stability between the main body of the seat brick and the inner liner.
[0011] Preferably, four limiting blocks are fixedly connected to the surface of the main body of the seat brick, and the four limiting blocks are distributed in a ring array.
[0012] Four limiting blocks arranged in a circular array are set on the surface of the main body of the base brick. These limiting blocks serve to fix and support the main body of the base brick, so that the main body of the base brick can be stably assembled on the steel ladle.
[0013] Preferably, the main body of the seat brick, the convex ring, and the limiting block are integrally formed, and the inner liner of the seat brick, the positioning block, and the buckle cover are also integrally formed.
[0014] The integrated design improves the connection strength between components and the stability of the overall structure, avoiding safety hazards caused by loose or detached components.
[0015] Preferably, both the main body of the seat brick and the inner liner of the seat brick are made of aluminum zirconium carbon material, and the inner wall of the inner liner of the seat brick is fixedly connected with a zirconium oxide coating.
[0016] Both the main body and inner liner of the seat brick are made of aluminum zirconium carbon material. This material has excellent high temperature resistance, corrosion resistance and wear resistance, which can meet the needs of use in high temperature environments. At the same time, the zirconium oxide coating fixedly connected to the inner wall of the seat brick further improves the wear resistance and service life of the seat brick inner liner.
[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0018] By designing structures such as positioning blocks, vertical guide grooves, arc-shaped guide grooves, and positioning guide grooves, the inner liner of the sprue seat brick and the main body of the sprue seat brick are quickly disassembled and assembled. The operation is simple, which greatly improves maintenance efficiency and reduces maintenance costs. There is no need to replace the entire sprue seat brick; only the damaged inner liner of the sprue seat brick needs to be replaced to restore the normal use of the sprue seat brick, effectively extending the overall service life of the sprue seat brick. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a cross-sectional view of the present invention.
[0021] Figure 3 This is a longitudinal structural sectional view of the present invention;
[0022] Figure 4 This is a schematic diagram of the main body of the base brick of this utility model;
[0023] Figure 5 This is a structural cross-sectional view of the main body of the base brick of this utility model;
[0024] Figure 6 This is a schematic diagram of the structure of the inner liner of the seat brick of this utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Main body of the base brick; 2. Inner liner of the base brick; 3. Assembly groove; 4. Positioning block; 5. Vertical guide groove; 6. Arc-shaped guide groove; 7. Positioning guide groove; 8. Protruding ring; 9. Cover; 10. Limiting block. Detailed Implementation
[0027] 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.
[0028] This utility model provides, for example Figure 1-6 The composite sprue seat brick shown includes a seat brick body 1 and a seat brick inner liner 2. The seat brick body 1 has an assembly groove 3 inside. The seat brick inner liner 2 is rotatably connected to the assembly groove 3. A positioning block 4 is fixedly connected to the surface of the seat brick inner liner 2. A vertical guide groove 5 is opened at the top of the seat brick body 1. An arc-shaped guide groove 6 and a positioning guide groove 7 are opened on the inner wall of the assembly groove 3. One end of the arc-shaped guide groove 6 is connected to the bottom end of the vertical guide groove 5, and the other end of the arc-shaped guide groove 6 is connected to the top end of the positioning guide groove 7. The vertical guide groove 5, the arc-shaped guide groove 6 and the positioning guide groove 7 are all matched with the positioning block 4.
[0029] In one aspect of this embodiment, a protruding ring 8 is fixedly connected to the top of the brick seat body 1, and a buckle 9 is fixedly connected to the top of the brick seat liner 2. The buckle 9 is engaged with the protruding ring 8. Four limiting blocks 10 are fixedly connected to the surface of the brick seat body 1. The four limiting blocks 10 are arranged in a circular array. The brick seat body 1, the protruding ring 8 and the limiting blocks 10 are integrally formed. The brick seat liner 2, the positioning block 4 and the buckle 9 are also integrally formed. The brick seat body 1 and the brick seat liner 2 are both made of aluminum zirconium carbon material. The inner wall of the brick seat liner 2 is fixedly connected with a zirconium oxide coating.
[0030] Working principle of this utility model:
[0031] Refer to the instruction manual appendix Figure 1-6 When using this utility model, firstly, insert the inner brick liner 2 into the vertical guide groove 5 at the top of the main body 1 of the main brick through the positioning block 4 on its surface. As the inner brick liner 2 goes deeper, the positioning block 4 slides down the vertical guide groove 5 to its bottom and then enters the arc-shaped guide groove 6. Continue to rotate the inner brick liner 2, and the positioning block 4 slides along the arc-shaped guide groove 6 to its other end and enters the positioning guide groove 7. At this time, the inner brick liner 2 needs to be pushed down to ensure that the positioning block 4 moves smoothly to the bottom of the positioning guide groove 7, thereby achieving a stable assembly between the inner brick liner 2 and the main body 1 of the main brick.
[0032] When the inner liner 2 of the seat brick and the main body 1 of the seat brick are assembled, the cap 9 on the top of the inner liner 2 of the seat brick and the protruding ring 8 on the top of the main body 1 of the seat brick are engaged, which further enhances the connection stability between the inner liner 2 of the seat brick and the main body 1 of the seat brick.
[0033] When it is necessary to disassemble the inner liner 2 of the seat brick, first pull the inner liner 2 of the seat brick upward slightly so that the positioning block 4 moves from the positioning guide groove 7 to the arc-shaped guide groove 6. Then rotate the inner liner 2 of the seat brick in the opposite direction so that the positioning block 4 moves along the arc-shaped guide groove 6 to the bottom of the vertical guide groove 5. Then pull the inner liner 2 of the seat brick upward to easily remove the inner liner 2 of the seat brick body 1, so as to achieve the purpose of quick disassembly and assembly.
[0034] The design simplifies the disassembly and assembly of the inner liner 2 of the sprue, eliminating the need to replace the entire sprue seat brick and thus significantly reducing maintenance costs. Furthermore, both the inner liner 2 and the main body 1 of the sprue are made of high-temperature resistant and wear-resistant aluminum zirconium carbon material, further improving the service life and reliability of the sprue seat brick. The zirconium oxide coating on the inner wall of the inner liner 2 also provides additional protection, reducing the corrosion and wear of the inner liner by molten steel.
Claims
1. A composite sprue seat brick with an easily detachable inner liner, comprising a seat brick body (1) and a seat brick inner liner (2), characterized in that: The main body (1) of the seat brick has an assembly groove (3) inside. The inner liner (2) of the seat brick is rotatably connected to the assembly groove (3). A positioning block (4) is fixedly connected to the surface of the inner liner (2). The top of the main body (1) of the seat brick has a vertical guide groove (5). The inner wall of the assembly groove (3) has an arc-shaped guide groove (6) and a positioning guide groove (7). One end of the arc-shaped guide groove (6) is connected to the bottom end of the vertical guide groove (5). The other end of the arc-shaped guide groove (6) is connected to the top end of the positioning guide groove (7). The vertical guide groove (5), the arc-shaped guide groove (6) and the positioning guide groove (7) are all matched with the positioning block (4).
2. The composite water inlet seat brick for easy disassembly and assembly of the inner liner according to claim 1, characterized in that: The top of the main body (1) of the seat brick is fixedly connected to a protruding ring (8), and the top of the inner liner (2) of the seat brick is fixedly connected to a buckle (9), which is engaged with the protruding ring (8).
3. A composite water inlet seat brick for easy disassembly and assembly of the inner liner according to claim 2, characterized in that: Four limiting blocks (10) are fixedly connected to the surface of the main body (1) of the seat brick, and the four limiting blocks (10) are arranged in a ring array.
4. A composite sprue seat brick for easy disassembly and assembly of the inner liner as described in claim 3, characterized in that: The main body (1), the protruding ring (8) and the limiting block (10) of the seat brick are integrally formed, and the inner liner (2), the positioning block (4) and the cover (9) of the seat brick are also integrally formed.
5. A composite sprue seat brick for easy disassembly and assembly of the inner liner according to claim 1, characterized in that: Both the main body (1) and the inner liner (2) of the seat brick are made of aluminum zirconium carbon material, and the inner wall of the inner liner (2) is fixedly connected with a zirconium oxide coating.