Shell-loading sliding plate brick with positioning device on back surface

Abstract

The utility model discloses a casing sliding plate brick with a positioning device on the back surface, which comprises a sliding plate brick body and a steel shell, the sliding plate brick body is mounted in the steel shell, fire clay is filled in a gap between the sliding plate brick body and the steel shell, a positioning bulge is convexly arranged on a fire clay combined plate surface, adjacent to the steel shell, of the sliding plate brick body, and the positioning device is arranged on the positioning bulge. The positioning protrusions are located between the sliding plate brick body and the fireclay combination inner surface of the steel shell, and the free ends, away from the sliding plate brick body, of the positioning protrusions make contact with the fireclay combination inner surface. According to the sliding plate brick, the bonding strength of the sliding plate brick and fireclay is increased through the positioning protrusions arranged on the back face of the sliding plate brick, meanwhile, the positioning protrusions play a role in positioning and supporting in the shell loading operation, the thickness of the fireclay is convenient to control, and the labor efficiency and the production stability of the shell loading operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory materials, in particular to a shell-loading slide brick with a positioning device on the back. Background Art

[0002] Skateboard bricks are an important functional refractory material used to control the flow rate of molten steel. They need to be resistant to heat shock and erosion. Some skateboard bricks need to be wrapped with a steel shell on the outside. The steel shell protects the skateboard bricks and also constrains the skateboard bricks to prevent them from cracking and breaking due to excessive thermal expansion during use. The area near the casting hole on the skateboard brick is usually not wrapped with a steel shell, which is matched with the upper and lower water inlet end faces. The steel shell needs to be assembled with fire clay, which is prone to shrinkage under high temperature conditions during use, which may cause deformation or displacement of the skateboard bricks. If the fire clay is not filled evenly when assembling the steel shell, the fire clay is prone to uneven shrinkage, which may cause the skateboard bricks to be subjected to uneven forces, causing the skateboard bricks to deform, affecting the skateboard bricks' control over the molten steel and resulting in unstable molten steel flow rate. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to provide a shell loading slide block brick with a positioning device on the back, and to increase the bonding strength between the slide block and the fire mud by providing a positioning protrusion on the back of the slide block. At the same time, the positioning protrusion plays a positioning and supporting role in the shell loading operation, which is convenient for controlling the thickness of the fire mud and improving the labor efficiency and production stability of the shell loading operation.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A shelled skateboard brick with a positioning device on the back, comprising a skateboard brick body and a steel shell, wherein the skateboard brick body is installed in the steel shell, and the gap between the skateboard brick body and the steel shell is filled with fire mud. A positioning protrusion is protruding from the fire mud bonding plate surface of the skateboard brick body adjacent to the steel shell, and the positioning protrusion is located between the skateboard brick body and the fire mud bonding inner surface of the steel shell, and the free end of the positioning protrusion away from the skateboard brick body is in contact with the fire mud bonding inner surface.

[0006] The shelled skateboard brick with a positioning device on the back has at least one of point contact, line contact and surface contact between the positioning protrusion and the steel shell, and the height of the positioning protrusion protruding from the fire clay bonding board surface of the skateboard brick body is equal.

[0007] The shell-mounted skateboard brick with a positioning device on the back, the positioning protrusion forms three or more point contacts with the inner surface of the fire mud, and the contact points between the positioning protrusion and the inner surface of the fire mud are alternately distributed in the circumferential direction of the casting hole on the skateboard brick body.

[0008] The shell-mounted skateboard brick with a positioning device on the back has two or more linear contacts between the positioning protrusions and the inner surface of the fire clay combination; at least two positioning protrusions are relatively distributed on both sides of the casting hole on the skateboard brick body.

[0009] The shell-mounted skateboard brick with a positioning device on the back is characterized in that the positioning protrusions form more than two linear contacts with the inner surface of the fire clay combination; and the positioning protrusions are arranged parallel to each other.

[0010] The shell-mounted skateboard brick with a positioning device on the back is characterized in that the positioning protrusions form more than two linear contacts with the inner surface of the fire clay combination; and the positioning protrusions cross each other.

[0011] The shell-loading slide block with a positioning device on the back has three or more contact surfaces formed between the positioning protrusion and the inner surface of the fire clay combination; the contact surfaces between the positioning protrusion and the inner surface of the fire clay combination are alternately distributed in the circumferential direction of the casting hole on the slide block body.

[0012] The above-mentioned shell-mounted skateboard brick with a positioning device on the back side has a contact surface in the shape of a circle, an ellipse, an annular shape, a polygon, or a combination of two or more of them.

[0013] The shell-mounted skateboard brick with a positioning device on the back, the positioning protrusion is a hemispherical protrusion, the positioning protrusion is arranged in a matrix around the casting hole on the skateboard brick body; point contact is formed between the positioning protrusion and the inner surface of the fire clay combination.

[0014] The shelled skateboard brick with a positioning device on the back, the vertical projection width of the connection area between the positioning protrusion and the fire mud combined board surface on the fire mud combined board surface is greater than or equal to 5mm; the height of the positioning protrusion protruding from the surface of the skateboard brick body is 2-15mm.

[0015] The technical solution of the utility model has achieved the following beneficial technical effects:

[0016] 1. The utility model realizes accurate positioning between the skateboard brick body and the steel shell by setting a positioning protrusion on the back of the skateboard brick body. The positioning protrusion plays a positioning and supporting role in the shell loading operation, so that a highly uniform space is formed between the back of the skateboard brick and the steel shell. The space will be filled with fire mud when the skateboard brick body is shelled, thereby ensuring the consistency of the fire mud thickness when the shell is loaded. This consistency helps to ensure the stability and durability of the skateboard brick during use.

[0017] 2. Regardless of whether the positioning protrusions in the utility model form point contact, line contact or surface contact with the steel shell, the contact area and contact strength between the skateboard brick and the fire clay are increased. In particular, when point contact or line contact is formed between the positioning protrusions and the steel shell, the contact area between the fire clay and the steel shell is hardly reduced, which is beneficial to enhancing the bonding strength between the skateboard brick body, the fire clay and the steel shell, making the skateboard brick less likely to be deformed, displaced or damaged during use.

[0018] 3. By adjusting the shape and size of the positioning protrusions in the utility model, the weight of the skateboard bricks can be reduced to a certain extent while ensuring that the skateboard bricks are firmly installed in the shell, thereby saving refractory resources, which not only helps to reduce production costs, but also helps to reduce environmental burdens and meets the requirements of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of a housing slide plate according to Embodiment 1 of the present utility model;

[0020] Figure 2 An enlarged view of the positioning protrusion of Example 1 of the utility model;

[0021] Figure 3 A cross-sectional view of a slide plate according to Embodiment 4 of the present utility model;

[0022] Figure 4 An enlarged view of the positioning protrusion of Example 4 of the utility model;

[0023] Figure 5 An enlarged view of the positioning protrusion of Example 3 of the utility model.

[0024] The reference numerals in the figure are as follows: 1-slide plate brick body; 2-positioning protrusion; 3-fire mud; 4-steel shell; 41-fire mud combined inner surface. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1 and Figure 2As shown, the shelled skateboard brick in this embodiment includes a skateboard brick body 1 and a steel shell 4, wherein the skateboard brick body 1 is installed in the steel shell 4, and the gap between the skateboard brick body 1 and the steel shell 4 is filled with fire mud 3. The back of the skateboard brick body 1 adjacent to the steel shell 4 is the fire mud combined board surface, and the fire mud combined board surface is protruded with positioning protrusions 2. In this embodiment, the positioning protrusions are hemispherical bodies with the same shape and size, and are evenly distributed around the casting hole of the skateboard brick body 1. When the skateboard brick body 1 is installed in the steel shell, multiple point contacts are formed between the free end of the positioning protrusion 2 away from the skateboard brick body 1 and the fire mud combined inner surface 41 of the steel shell 4. Since the positioning protrusion 2 protrudes from the fire mud combined board surface of the skateboard brick body, a space with uniform height will be formed between the skateboard brick body 1 and the steel shell 4 at this time, and the space will be filled with fire mud 3. In other words, the height of the positioning protrusion 2 protruding from the back of the skateboard brick body 1 determines the height of the space, and further determines the thickness of the fire mud when the shell is installed.

[0027] When the skateboard brick in this embodiment is processed and formed, a hemispherical positioning protrusion 2 is formed on the back, and the positioning protrusion 2 is only located between the shell-mounting part of the skateboard brick and the steel shell 4. In order to meet the strength of the protrusion and avoid damage to the protrusion during transportation, the size of the connection between the positioning protrusion 2 and the back of the skateboard brick body 1 (that is, the vertical projection width of the connection area between the positioning protrusion and the fire-mud combination board surface on the fire-mud combination board surface) is 5mm, and the height of the positioning protrusion 2 protruding from the fire-mud combination board surface is 3mm.

[0028] In some other embodiments, the height of the positioning protrusion 2 protruding from the fire-cement combination board surface can be adjusted according to the thickness of the skateboard brick body. The vertical projection width of the connection area between the positioning protrusion and the fire-cement combination board surface on the fire-cement combination board surface can also be adjusted according to demand, but should not be less than 5mm.

[0029] Example 2

[0030] The structure of the skateboard brick body 1 and the steel shell 4 in this embodiment is the same as that in embodiment 1. Different from embodiment 1, the positioning protrusions in this embodiment are cylindrical and arranged in a matrix around the casting hole of the skateboard brick body 1. The end face of one end of the cylinder is fixedly connected to the back of the skateboard brick body 1, and the other end of the cylinder extends to the fire-mud-bonded inner surface 41. Multiple contact surfaces are formed between the positioning protrusion 2 and the fire-mud-bonded inner surface 41 of the steel shell 4, and the shape of each contact surface is circular. The diameter of the positioning protrusion 2 is 6 mm, and the height of the positioning protrusion 2 protruding from the fire-mud-bonded board surface is 3 mm.

[0031] In some other embodiments, the positioning protrusion 2 may be in the shape of a polygonal column, and the shape of the contact surface between the positioning protrusion 2 and the inner surface 41 of the fire clay may be in the shape of a circle, an ellipse, a polygon or a ring, or a combination of the above.

[0032] Example 3

[0033] The structures of the skateboard brick body 1 and the steel shell 4 in this embodiment are the same as those in embodiment 1. Different from embodiment 1, the positioning protrusion 2 in this embodiment is in the shape of a triangular prism, and 10 triangular prisms are arranged in parallel on the back of the skateboard brick body 1 and relatively distributed on both sides of the casting hole on the skateboard brick body 1.

[0034] like Figure 5 As shown, in this embodiment, each positioning protrusion 2 has an edge that forms a line contact with the fire clay bonding inner surface 41, and is connected to the skateboard brick body 1 through a rectangular side surface. The vertical projection width of the connection area between the positioning protrusion 2 and the fire clay bonding board surface on the fire clay bonding board surface is 5 mm, and the height of the positioning protrusion 2 protruding from the back of the skateboard brick body 1 is 3 mm.

[0035] Compared with Example 2, when the positioning protrusion 2 adopts the structure in this embodiment, it can not only be firmly combined with the skateboard brick body 1, but also ensure that the contact area between the fire mud and the steel shell is not significantly reduced, and increase the contact area between the fire mud and the skateboard brick body, thereby increasing the bonding strength between the steel shell, fire mud and the skateboard brick.

[0036] Example 4

[0037] like Figure 3 and Figure 4 As shown, the structure of the skateboard brick body 1 and the steel shell 4, and the distribution of the positioning protrusions 2 in this embodiment are the same as those in Example 1. Different from Example 1, the positioning protrusions 2 in this embodiment are columnar structures with hemispherical free ends. Point contact is formed between the hemispherical free ends and the fire mud bonding inner surface 41.

[0038] Compared with Example 1, the protruding height of the positioning protrusion 2 on the back of the slide block body 1 in this embodiment is increased to 6 mm, which can reduce the weight of the slide block to a certain extent, thereby saving refractory material resources.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A shelled skateboard brick with a positioning device on the back, comprising a skateboard brick body (1) and a steel shell (4), wherein the skateboard brick body (1) is installed in the steel shell (4), and the gap between the skateboard brick body (1) and the steel shell (4) is filled with fire clay (3), characterized in that: A positioning protrusion (2) is protruded from the fire-cement bonding plate surface of the slide brick body (1) adjacent to the steel shell (4); the positioning protrusion (2) is located between the slide brick body (1) and the fire-cement bonding inner surface (41) of the steel shell (4); and the free end of the positioning protrusion (2) away from the slide brick body (1) is in contact with the fire-cement bonding inner surface (41).

2. The shell-mounted skateboard brick with a positioning device on the back according to claim 1, characterized in that: The positioning protrusion (2) and the steel shell (4) are in at least one of point contact, line contact and surface contact, and the positioning protrusion (2) protrudes from the fire clay bonding board surface of the skateboard brick body (1) to an equal height.

3. The shell-mounted skateboard brick with a positioning device on the back according to claim 2, characterized in that: More than three point contacts are formed between the positioning protrusion (2) and the fire clay combination inner surface (41), and the contact points between the positioning protrusion (2) and the fire clay combination inner surface (41) are alternately distributed in the circumferential direction of the casting hole on the slide brick body (1).

4. The shell-mounted skateboard brick with a positioning device on the back according to claim 2, characterized in that: The positioning protrusions (2) form more than two linear contacts with the fire clay bonding inner surface (41); at least two positioning protrusions (2) are relatively distributed on both sides of the casting hole on the slide block body (1).

5. The shell-mounted skateboard brick with a positioning device on the back according to claim 4, characterized in that: More than two linear contacts are formed between the positioning protrusions (2) and the fire clay combination inner surface (41); and the positioning protrusions (2) are arranged parallel to each other.

6. The shell-mounted skateboard brick with a positioning device on the back according to claim 4, characterized in that: More than two linear contacts are formed between the positioning protrusions (2) and the fire clay combination inner surface (41); and the positioning protrusions (2) intersect with each other.

7. The shell-mounted skateboard brick with a positioning device on the back according to claim 2, characterized in that: More than three contact surfaces are formed between the positioning protrusion (2) and the fire clay combination inner surface (41); the contact surfaces between the positioning protrusion (2) and the fire clay combination inner surface (41) are distributed alternately in the circumferential direction of the casting hole on the slide brick body (1).

8. The shell-mounted skateboard brick with a positioning device on the back according to claim 7, characterized in that: The contact surface is in the shape of a circle, an ellipse, an annular shape, a polygon, or a combination of two or more thereof.

9. The shell-mounted skateboard brick with a positioning device on the back according to claim 2, characterized in that: The positioning protrusions (2) are hemispherical protrusions, and the positioning protrusions (2) are arranged in a matrix on the periphery of the casting holes on the skateboard brick body (1); point contacts are formed between the positioning protrusions (2) and the fire clay bonding inner surface (41).

10. The shell-mounted skateboard brick with a positioning device on the back according to any one of claims 1 to 8, characterized in that: The vertical projection width of the connection area between the positioning protrusion (2) and the fire-clay combination board surface on the fire-clay combination board surface is greater than or equal to 5 mm; the height of the positioning protrusion (2) protruding from the surface of the skateboard brick body (1) is 2-15 mm.

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