Special prefabricated super-large fireproof brick for air guide wall

Abstract

The utility model discloses special prefabricated super-large refractory brick of air guide wall, including the brick body, the first labyrinth block, the second labyrinth block, the first labyrinth groove and the second labyrinth groove are equipped with along the length direction distribution to the brick body side, in the utility model, adopt the first labyrinth block, the second labyrinth block and the first labyrinth groove, the second labyrinth groove's staggered occlusion structure compares with common splicing mode, and the brick joint quantity reduces greatly, and the brick joint that reduces directly reduces high temperature airflow leakage channel, and the staggered distribution labyrinth structure makes the splicing surface form multiple sealed barriers, and the sealing performance further promotes under the high temperature thermal expansion effect, and the air tightness of air guide wall whole improves significantly, and the thermal efficiency is promoted. The occlusion structure of labyrinth block and labyrinth groove in the utility model strengthens the shear resistance and the overall connection strength between the brick body significantly, can effectively resist the pellet side pressure and airflow impact, and the brick body displacement amount control is reduced, prolongs the service life of air guide wall.

Description

Technical Field

[0001] This utility model relates to the field of refractory materials technology, and in particular to prefabricated extra-large refractory bricks for wind guide walls. Background Technology

[0002] In high-temperature industrial equipment such as vertical shaft furnaces, the air guide wall is a key component for achieving uniform airflow distribution and ensuring smelting efficiency. Its performance directly affects the stability of equipment operation and product quality. The air guide wall is usually constructed of refractory bricks. Due to the characteristics of the working environment, such as high temperature, strong airflow scouring, and large temperature fluctuations, the structural stability and airtightness of the refractory bricks are extremely important.

[0003] Existing technologies have the following problems:

[0004] In existing technologies, refractory bricks for air guide walls mostly employ ordinary rectangular splicing or simple concave-convex structure splicing. Ordinary rectangular splicing methods result in numerous and densely distributed brick joints, with stress transferred between bricks only through planar contact. Under long-term scouring and temperature cycling of high-temperature airflow, the brick joints are prone to expansion, leading to leakage of high-temperature airflow. Statistics show that air guide walls using ordinary splicing methods suffer from consistently high heat losses due to high-temperature airflow leakage each year. At the same time, the leaked high-temperature airflow exacerbates the erosion of the brick edges, shortening the average service life of the air guide wall to 6-8 months. Existing patents using single-set concave-convex structures for splicing reduce brick joints to some extent, but due to the limited contact area of ​​the splicing surface, deformation easily occurs at high temperatures, leading to sealing failure. Other technologies use straight-line grooved block splicing, which lacks an interlocking structure at the splice joint, resulting in weak shear resistance. Under the lateral pressure of pellet ore, brick misalignment easily occurs, further widening the gaps between brick joints, leading to high leakage of high-temperature airflow and severely affecting thermal efficiency.

[0005] To address these shortcomings, we proposed a solution using precast extra-large refractory bricks specifically designed for wind guide walls. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a special prefabricated extra-large refractory brick for wind guide walls.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a prefabricated extra-large refractory brick for wind guide walls, comprising a brick body, wherein the side of the brick body is provided with a first maze block, a second maze block, a first maze groove and a second maze groove distributed along the length direction, wherein the shape of the first maze block is adapted to the shape of the first maze groove, and the shape of the second maze block is adapted to the shape of the second maze groove.

[0008] The first maze block, the second maze block, the first maze slot, and the second maze slot are all the same length as the brick.

[0009] The depth of the first and second maze grooves is 1.1-1.3 times the height of the corresponding first and second maze blocks, and the groove width is 2-5mm larger than the width of the corresponding first and second maze blocks.

[0010] The brick body has a through hole in the middle, and the number of through holes is 2-4, which are evenly distributed on the brick body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention employs an interlocking structure of a first labyrinth block, a second labyrinth block, a first labyrinth groove, and a second labyrinth groove. Compared with ordinary splicing methods, the number of brick joints is significantly reduced. The reduced brick joints directly lower the leakage channels of high-temperature airflow. Furthermore, the interlocking labyrinth structure forms multiple sealing barriers at the splicing surface, further improving the sealing performance under the action of high-temperature thermal expansion. The overall airtightness of the air guide wall is significantly improved, and the thermal efficiency is enhanced.

[0013] The interlocking structure of the labyrinth block and labyrinth groove in this invention significantly enhances the shear resistance and overall connection strength between the bricks, effectively resisting the lateral pressure of the pellet ore and the impact of airflow. The amount of brick misalignment is reduced, extending the service life of the wind guide wall. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A perspective view of the prefabricated extra-large refractory bricks for the wind guide wall proposed in this utility model;

[0016] Figure 2 This is a cross-sectional view of the prefabricated extra-large refractory bricks for the wind guide wall proposed in this utility model;

[0017] Figure 3 for Figure 1 An enlarged diagram of A in the diagram.

[0018] Legend:

[0019] 1. Brick body; 2. Through hole; 3. First maze groove; 4. First maze block; 5. Second maze block; 6. Second maze groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 The prefabricated extra-large refractory bricks for the air guide wall include brick body 1, which is the basic component of the refractory brick and the main load-bearing body of the overall structure.

[0023] The side of the brick body 1 is provided with a first maze block 4, a second maze block 5, a first maze groove 3 and a second maze groove 6 distributed along the length direction. These structures are the key to realizing the splicing between brick bodies 1. The distribution along the length direction can ensure that the splicing can be carried out effectively along the entire length of the brick body 1.

[0024] The first maze block 4 is shaped to match the first maze groove 3, and the second maze block 5 is shaped to match the second maze groove 6. This compatibility allows adjacent bricks 1 to be accurately spliced ​​together to form a stable connection.

[0025] Please refer to Figure 1 , Figure 2The first maze block 4, the second maze block 5, the first maze groove 3, and the second maze groove 6 are all the same length as the brick body 1. This design allows the splicing structure to function throughout the entire length of the brick body 1, ensuring the integrity and stability of the splicing.

[0026] Please refer to Figure 1 , Figure 2 The depth of the first maze groove 3 and the second maze groove 6 is 1.1-1.3 times the height of the corresponding first maze block 4 and the second maze block 5. This depth setting provides sufficient space for the maze blocks to be embedded and can also prevent structural damage due to insufficient space during high-temperature thermal expansion. The groove width is 2-5mm larger than the width of the corresponding first maze block 4 and the second maze block 5. The appropriate width difference facilitates alignment during installation and also reserves space for thermal expansion.

[0027] Please refer to Figure 1 , Figure 2 The brick body 1 has a through hole 2 in the middle. The through hole 2 can reduce the weight of the brick body 1 and facilitate airflow. There are 2-4 through holes 2, which are evenly distributed on the brick body 1. The even distribution can ensure that the brick body 1 is subjected to uniform force and avoid the impact of uneven weight distribution on the overall structural stability.

[0028] Working principle: In use, adjacent bricks 1 are spliced ​​together, so that the first maze block 4 of one brick 1 is embedded in the corresponding first maze groove 3 of another brick 1, and the second maze block 5 is embedded in the corresponding second maze groove 6. Since the shapes of the first maze block 4 and the first maze groove 3, and the second maze block 5 and the second maze groove 6 are adapted, and each maze block and maze groove is the same length as the brick 1, a tight and comprehensive interlocking can be achieved. At the same time, the depth and width of the maze groove provide sufficient space for the thermal expansion of the brick 1 under high temperature environment, preventing structural deformation or damage caused by expansion. The through hole 2 in the middle of the brick 1 reduces the weight and promotes airflow while ensuring the structural strength of the brick 1. Through this splicing method, the air guide wall forms a whole with good performance, high air tightness and stable structure, which can effectively resist the external forces such as high temperature airflow scouring and lateral pressure of pellet ore.

[0029] 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 precast extra-large refractory brick for wind guide walls, comprising a brick body (1), characterized in that, The brick body (1) has a first maze block (4), a second maze block (5), a first maze groove (3) and a second maze groove (6) distributed along the length direction on its side. The first maze block (4) is adapted to the shape of the first maze groove (3), and the second maze block (5) is adapted to the shape of the second maze groove (6).

2. The precast extra-large refractory brick for wind guide walls according to claim 1, characterized in that, The first maze block (4), the second maze block (5), the first maze groove (3), and the second maze groove (6) are all the same length as the brick (1).

3. The precast extra-large refractory brick for wind guide walls according to claim 1, characterized in that: The depth of the first maze groove (3) and the second maze groove (6) is 1.1-1.3 times the height of the corresponding first maze block (4) and the second maze block (5), and the groove width is 2-5mm larger than the width of the corresponding first maze block (4) and the second maze block (5).

4. The precast extra-large refractory brick for wind guide walls according to claim 1, characterized in that: The brick body (1) has a through hole (2) in the middle, and the number of through holes (2) is 2-4, and they are evenly distributed on the brick body (1).

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