Running steel brick

Abstract

The utility model relates to the technical field of refractory bricks, and discloses a runner brick which comprises an outer brick body, a containing groove is formed in one end of the outer brick body, the middle of the containing groove penetrates through the outer brick body to form a containing cavity, a lining cylinder is arranged in the containing cavity in a penetrating mode, and a fixing plate is arranged at the end of the lining cylinder. A containing groove is formed in the fixing plate, a plurality of fixing holes are formed in the containing groove at intervals in the circumferential direction of the containing groove, a plurality of sets of split fixing pieces are arranged at the bottom of the fixing plate, internal threads are arranged in the two fixing pieces in each set, and mounting holes communicated with the interiors of the fixing pieces in each set are formed in the fixing plate. And fixing bolts are arranged in each group of fixing sheets through the mounting holes. According to the utility model, impact abrasion to the brick body caused by direct contact between molten steel and the brick body can be avoided, and meanwhile, only the lining cylinder is replaced and the outer brick body is reserved after the inner wall is abraded, so that the waste of materials is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory bricks, in particular to a flow steel brick. Background Art

[0002] Flow bricks are a type of refractory material used in high-temperature industrial furnaces, typically made from high-aluminum materials. They are laid within the grooves of the ingot casting baseplate, connecting the bricks to the ingot molds and are commonly known as "steam channel bricks." In the foundry industry, molten steel or iron is transported to the corresponding molds through the pipes formed by the flow bricks. Flow bricks are typically rectangular hollow clay bricks available in a variety of sizes. To reduce resistance to the flow of molten steel and prevent leaks, flow bricks must have smooth inner pores, a regular outer shape, and tight joints. Currently, existing flow bricks are typically fired from materials such as clay, resulting in a rough inner wall. This creates significant resistance to the flow of molten steel and can wash away some residue, significantly impacting product quality. To ensure product quality, flow bricks must be frequently replaced, and these replacements cannot be repaired or reused, resulting in material waste and increased production costs. Therefore, there is an urgent need for a flow brick that avoids the need for complete replacement due to wear and tear of the inner wall, which results in excessive material waste. Utility Model Content

[0003] The purpose of the utility model is to provide a flow steel brick, which can avoid the impact wear of the brick body caused by direct contact between molten steel and the brick body. At the same time, after the inner wall is worn, only the inner lining tube needs to be replaced, and the outer brick body is retained, thereby reducing material waste and lowering production costs.

[0004] The utility model adopts the following technical solutions:

[0005] A flow steel brick comprises an outer brick body, wherein a receiving groove is provided at one end of the outer brick body, a receiving cavity is formed through the middle of the receiving groove which penetrates the outer brick body, an inner lining tube is passed through the receiving cavity and a fixing plate is provided at the end thereof, a plurality of fixing holes are arranged at intervals along the circumferential direction of the receiving groove, a plurality of groups of split fixing plates are arranged at the bottom of the fixing plate, and an internal thread is provided inside the two fixing plates in each group, and a mounting hole which is conductive with the inside of each group of fixing plates is opened on the fixing plate, a fixing bolt is arranged in each group of fixing plates through the mounting hole, and as the fixing bolt is continuously screwed in, the fixing plate is stretched open and abuts against the inner wall of the fixing hole.

[0006] Preferably, the fixing plate matches the size of the accommodating groove.

[0007] Preferably, a connecting portion is protruded from the end of the inner liner at one end where the fixing plate is located, and a connecting groove for placing the connecting portion is provided at one end of the inner liner away from the fixing plate.

[0008] Preferably, the connecting portion includes a truncated cone-shaped connecting cylinder located at the distal end of the fixing plate and a cylindrical connecting cylinder connected to the truncated cone-shaped connecting cylinder.

[0009] Preferably, the cylindrical connecting tube, the truncated cone connecting tube and the liner tube are all integrally formed of the same material.

[0010] Preferably, the top end of the connecting groove shrinks inward to form a funnel-shaped drainage portion, and the outer diameter of the drainage portion matches the inner diameter of the smallest part of the end of the truncated cone-shaped connecting cylinder.

[0011] Preferably, a limiting block is protruding from the outer side of the bottom of the fixing plate, and a limiting boss is provided in the fixing hole; when the fixing plate is stretched open by the fixing bolt, the limiting block abuts against the bottom of the limiting boss.

[0012] Preferably, two limiting bosses are symmetrically arranged.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can avoid direct contact between molten steel and the outer brick body during use, which causes wear and corrosion of the inner wall of the outer brick body, thereby ensuring the quality of the product; at the same time, the use of a combined structure can also carry out targeted replacement according to the damaged position of the flow steel brick, reducing the high cost and material waste of the overall replacement.

[0014] By setting the fixing plate, the fixing plate can be quickly installed in the receiving groove of the outer brick body using the fixing bolts to achieve a quick connection between the inner lining tube and the outer brick body, providing convenience for the installation and disassembly between the inner lining tube and the outer brick body, and facilitating subsequent replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0016] Figure 2 This is a schematic structural diagram of an example brick body according to an embodiment of the present application;

[0017] Figure 3 This is a schematic structural diagram of the inner liner of an embodiment of the present application;

[0018] Figure 4 for Figure 3 sectional view of

[0019] Figure 5 A cross-sectional view of a fixing plate according to an embodiment of the present application;

[0020] Figure 6 This is a cross-sectional view of a brick body according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the present invention with reference to the accompanying drawings and embodiments:

[0022] like Figures 1 to 6 As shown, the flow steel brick described in the present invention includes an outer brick body 1, a receiving groove 2 is provided at one end of the outer brick body 1, and a receiving cavity 3 is formed in the middle of the receiving groove 2 through the outer brick body 1. The inner liner 11 is provided in the receiving cavity 3, and a fixing plate 4 is provided at its end. The fixing plate 4 matches the size of the receiving groove 2 to ensure that after the inner liner 11 is installed in the receiving cavity 3, the fixing plate 4 is just installed in the receiving groove 2, and the surface does not protrude from the surface of the receiving groove 2, so as to facilitate the subsequent docking between the flow steel bricks and ensure the tightness of the docking between the flow steel bricks; a plurality of fixing holes 5 are provided in the receiving groove 2 along its circumferential direction. The bottom of the fixing plate 4 is provided with multiple groups of split fixing plates 6. The number of groups of fixing plates 6 corresponds to the number of fixing holes 5. In the initial state, the bottoms of the two fixing plates 6 in each group are relatively gathered together so that the fixing plates 6 can be smoothly inserted into the fixing holes 5 during installation. The interior of each group of two fixing plates 6 is provided with internal threads. The fixing plate 4 is provided with mounting holes 7 that are connected to the interior of each group of fixing plates 6. The fixing bolts 8 are set in each group of fixing plates 6 through the mounting holes 7. As the fixing bolts 8 are continuously screwed in, the fixing plates 6 are stretched and abutted against the inner wall of the fixing holes 5, thereby achieving a fixed connection between the inner liner 11 and the outer brick body 1. The mounting holes 7 are preferably set as countersunk holes to avoid accommodating the ends of the fixing bolts 8 and to avoid the fixing bolts 8 protruding from the end face of the fixing plate 4 and affecting the subsequent docking between adjacent flow steel bricks.

[0023] Furthermore, a connecting portion 9 is formed on the end of the inner liner 11 at one end of the fixed plate 4. A connecting groove 10 for the connecting portion 9 is provided at the end of the inner liner 11 away from the fixed plate 4. By inserting the connecting portion 9 into the connecting groove 10, a tight connection between two adjacent flow steel bricks can be achieved, improving the convenience during construction and use. Specifically, the connecting portion 9 includes a frustum-shaped connecting tube 9-1 located at the far end of the fixed plate 4 and a cylindrical connecting tube 9-2 connected to the frustum-shaped connecting tube 9-1. The shape of the connecting groove 10 matches the shape of the connecting portion 9; this facilitates the butt connection of adjacent flow steel bricks. Among them, the cylindrical connecting tube 9-2, the conical connecting tube 9-1 and the inner lining tube 11 are all made of the same material and are integrally formed to ensure their structural strength; the inner lining tube 11 can be made of manganese steel alloy, which can quickly undergo work hardening on the surface under strong impact and extrusion conditions, so that it can maintain good toughness and plasticity, effectively avoiding the situation where residues are mixed into the molten steel during use, so that the quality of the product is effectively guaranteed, while also extending the service life of the entire flow steel brick and reducing production costs.

[0024] Furthermore, the top of the connecting groove 10 shrinks inward to form a funnel-shaped drainage portion 12, and the maximum outer diameter of the drainage portion 12 matches the smallest inner diameter of the end of the truncated cone-shaped connecting tube 9-1, so that when two adjacent flow steel bricks are docked, the drainage portion 12 in the front inner liner 11 is inserted into the connecting portion 9 of the rear inner liner 11 to avoid overflow of molten steel during the flow process.

[0025] Furthermore, a limit block 13 is provided on the outer side of the bottom of the fixing plate 6, and a limit boss 14 is provided in the fixing hole 5. When the fixing plate 6 is stretched open by the fixing bolt 8, the limit block 13 abuts under the limit boss 14, which can limit the limit block 13 and further improve the tightness of the connection between the inner liner 11 and the outer brick body 1. Preferably, two limit bosses 14 are symmetrically provided, which not only serve as a limit, but also reduce the difficulty of casting and facilitate the subsequent demolding operation.

[0026] When the present invention is in use, the inner lining tube 11 is first inserted into the accommodating cavity 3, and the fixing bolts 8 are used to pass through the mounting holes 7 to between the two fixing plates 6 of each group. As the fixing bolts 8 are continuously screwed in, the fixing plates 6 are stretched open so that they abut against the inner wall of the fixing holes 5. At this time, the limit block 13 is located below the limit boss 14, and the installation is completed. When two adjacent flow steel bricks need to be connected, the connecting portion 9 on the rear flow steel brick is inserted into the connecting groove 10 at the tail of the front flow steel brick. The operation is simple and quick. By setting the flow steel bricks as a combined structure, the present invention can not only reduce the corrosion caused by molten steel to them by optimizing the material of the inner lining tube 11 and ensure the quality of the finished product, but also can be replaced in a targeted manner after damage, avoiding the high cost and material waste of overall replacement. At the same time, the entire outer brick body 1 and the inner lining tube 11 have a simple structure, are easy to process and manufacture, and are highly practical.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flow steel brick, characterized by: It includes an outer brick body, one end of the outer brick body is provided with a accommodating groove, the middle part of the accommodating groove passes through the outer brick body to form an accommodating cavity, the inner lining tube is inserted into the accommodating cavity, and a fixing plate is provided at its end, a plurality of fixing holes are arranged at intervals along the circumferential direction of the accommodating groove, and a plurality of groups of split fixing plates are provided at the bottom of the fixing plate, and the two fixing plates in each group are provided with internal threads, and the fixing plate is provided with a mounting hole that is conductive with the interior of each group of fixing plates, and a fixing bolt is arranged in each group of fixing plates through the mounting hole, and as the fixing bolt is continuously screwed in, the fixing plate is stretched open and abuts against the inner wall of the fixing hole.

2. The flow steel brick according to claim 1, characterized in that: The fixing plate matches the size of the accommodating groove.

3. The flow steel brick according to claim 1, characterized in that: The end of the inner liner at one end where the fixing plate is located is protruded to form a connecting portion, and the end of the inner liner away from the fixing plate is provided with a connecting groove for placing the connecting portion.

4. The flow steel brick according to claim 3, characterized in that: The connecting portion includes a truncated cone-shaped connecting cylinder located at the distal end of the fixing plate and a columnar connecting cylinder connected to the truncated cone-shaped connecting cylinder.

5. The flow steel brick according to claim 4, characterized in that: The cylindrical connecting tube, the truncated cone connecting tube and the inner lining tube are all integrally formed of the same material.

6. The flow steel brick according to claim 5, characterized in that: The top end of the connecting groove shrinks inwards to form a funnel-shaped drainage portion, and the outer diameter of the drainage portion matches the inner diameter of the smallest part of the end of the truncated cone-shaped connecting cylinder.

7. The flow steel brick according to claim 1, characterized in that: A limiting block is protruding from the outer side of the bottom of the fixing plate, and a limiting boss is provided in the fixing hole; when the fixing plate is stretched open by the fixing bolt, the limiting block abuts against the bottom of the limiting boss.

8. The flow steel brick according to claim 7, characterized in that: There are two symmetrical limiting bosses.

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