High-strength heat-insulating bricks for furnace bottom

Abstract

The utility model relates to the technical field of thermal insulation brick, provide high -strength thermal insulation brick for furnace bottom, including base brick, the outside of base brick is fixed with reinforcing structure, the reinforcing structure includes thermal insulation layer, transition layer and reinforcing layer, the thermal insulation layer is fixed in the outside of base brick, the outside of thermal insulation layer is fixed with transition layer, the outside of transition layer is fixed with reinforcing layer. The utility model discloses be provided with reinforcing structure, the thermal insulation layer is alumina hollow ball brick layer, has the advantage of lightweight high -strength, the transition layer is high alumina fibre felt layer, has the characteristics of flexible buffer, and thermal shock stability is excellent, the reinforcing layer is silicon carbide brick, surface has good anti -erosion line, and high temperature resistance, high hardness, realize the device has the function of strengthening base brick conveniently, improve the working efficiency of high -strength thermal insulation brick for furnace bottom when using.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation brick technology, and in particular to high-strength thermal insulation bricks for furnace bottoms. Background Technology

[0002] In industries such as metallurgy and building materials, industrial furnaces and kilns consume a lot of energy. The furnace bottom area is subjected to high temperatures, mechanical loads, and thermal stress for a long time. Traditional materials are prone to problems such as peeling and cracking, resulting in serious heat loss and increased production costs. Improving the performance of insulating bricks for furnace bottoms can improve the energy efficiency of industrial furnaces and kilns and promote the green development of the industry. Therefore, it is necessary to design a high-strength heat-insulating brick for furnace bottoms. To address this, patent CN220814522U discloses a combined thermal insulation brick, comprising two combined thermal insulation brick bodies. A first extension block is fixedly connected to one side of each of the two combined thermal insulation brick bodies, and a first extension shell is fixedly connected to the other side of each of the two combined thermal insulation brick bodies. A second extension shell is fixedly connected to the top of each of the two combined thermal insulation brick bodies, and a second extension block is fixedly connected to the bottom of each of the two combined thermal insulation brick bodies. Each of the two combined thermal insulation brick bodies includes a base layer, which is composed of a thermal insulation layer, a heat insulation layer, and a sound insulation layer. This utility model, by setting up a block and slot structure, utilizes the blocks and slots provided in the combined thermal insulation bricks to increase the contact area between the combined thermal insulation bricks and the adhesive, thereby increasing the firmness between the two combined thermal insulation bricks and enhancing practicality. Although the combined thermal insulation bricks mentioned above can increase the stability of the connection between the two sets of thermal insulation bricks during use, they are easily damaged by high-temperature combustion during use. Therefore, it is necessary to design high-strength thermal insulation bricks for the furnace bottom. Utility Model Content

[0003] The purpose of this invention is to provide high-strength heat-insulating bricks for furnace bottoms, in order to solve the defect that existing high-strength heat-insulating bricks for furnace bottoms are easily damaged and cracked when subjected to high-temperature combustion.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: high-strength heat-insulating bricks for furnace bottom, including base bricks; A reinforcing structure is fixed to the outside of the base brick. The reinforcing structure includes an insulation layer, a transition layer, and a reinforcing layer. The insulation layer is fixed to the outside of the base brick. A transition layer is fixed to the outside of the insulation layer. A reinforcing layer is fixed to the outside of the transition layer. Both sides of the reinforcing layer are fixed with a combined structure; Both ends of the base brick are fixed with protective structures.

[0005] Furthermore, the insulation layer is an alumina hollow sphere brick layer, the transition layer is a high-alumina fiber felt layer, and the reinforcing layer is a silicon carbide brick.

[0006] Furthermore, the combined structure includes a connecting seat, a connecting bolt, and a connecting block. The connecting seat is uniformly fixed on the outer wall of one side of the reinforcing layer, and connecting bolts penetrate both sides inside the connecting seat. The connecting block is uniformly fixed on the outer wall of the reinforcing layer on the side away from the connecting seat.

[0007] Furthermore, the connecting seat and the connecting block are symmetrically distributed on both sides of the reinforcing layer, and the connecting block and the connecting seat are engaged and connected.

[0008] Furthermore, the protective structure includes an adhesive layer, a protective layer, and fixing bolts. The adhesive layer is disposed on the outer wall at both ends of the base brick, and the protective layer is fixed on the outer wall of the adhesive layer. Fixing bolts penetrate the corner positions inside the protective layer.

[0009] Furthermore, the adhesive layer is a high-temperature ceramic adhesive layer, and the protective layer is a corundum brick layer.

[0010] Furthermore, one end of each fixing bolt extends into the interior of the reinforcing layer.

[0011] The advantages of the high-strength heat-insulating brick for furnace bottom provided by this utility model are as follows: By incorporating a reinforced structure, the insulation layer is made of alumina hollow sphere bricks, which has the advantages of being lightweight and high-strength. The transition layer is made of high-alumina fiber felt, which has the characteristics of flexible buffering and excellent thermal shock stability. The reinforcing layer is made of silicon carbide bricks, which have good erosion resistance, high temperature resistance, and high hardness. This allows the device to easily reinforce the base bricks and improves the working efficiency of the high-strength heat insulation bricks used in the furnace bottom during use. With the addition of a modular structure, the connection between the connecting seat and the connecting block facilitates the combination and connection of multiple sets of bricks, improving the efficiency of the combination work. This enables the device to facilitate the combination and installation of base bricks, thus enhancing the convenience of using the high-strength heat-insulating bricks for the furnace bottom. By incorporating a protective structure, the bonding layer enhances the airtightness of both ends of the brick, preventing gas penetration. The protective layer also protects the ends of the base brick from damage, extending its service life. Furthermore, the reinforcement provided by the fixing bolts improves the stability of the connection. This device effectively protects both ends of the base brick, enhancing the stability and service life of the high-strength heat-insulating bricks used in furnace bottoms. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a top view cross-sectional structural diagram of the present invention; Figure 4 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 5 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.

[0013] The following are the annotations in the figure: 1. Base brick; 2. Reinforcing structure; 21. Insulation layer; 22. Transition layer; 23. Reinforcing layer; 3. Composite structure; 31. Connecting seat; 32. Connecting bolt; 33. Connecting block; 4. Protective structure; 41. Adhesive layer; 42. Protective layer; 43. Fixing bolt. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-5 The high-strength heat-insulating brick for furnace bottom provided by this utility model includes a base brick 1.

[0016] Reference Figures 1-5 A reinforcing structure 2 is fixed to the outside of the base brick 1. The reinforcing structure 2 includes an insulation layer 21, a transition layer 22, and a reinforcing layer 23. The insulation layer 21 is fixed to the outside of the base brick 1. The transition layer 22 is fixed to the outside of the insulation layer 21. The reinforcing layer 23 is fixed to the outside of the transition layer 22. The insulation layer 21 is an alumina hollow sphere brick layer. The transition layer 22 is a high alumina fiber felt layer. The reinforcing layer 23 is a silicon carbide brick.

[0017] The insulation layer 21 is an alumina hollow sphere brick layer, which can reduce the overall weight. The transition layer 22 is a high alumina fiber felt layer, which can absorb thermal stress and avoid interlayer delamination caused by sudden temperature changes. The reinforcing layer 23 is a silicon carbide brick, which can withstand the load of the furnace charge. Through the multi-layer gradient material alumina hollow sphere → high alumina fiber → silicon carbide, the heat conduction is gradually reduced, and the temperature of the outer wall of the furnace bottom can be effectively reduced.

[0018] Reference Figures 1-3 and Figure 5Both sides of the reinforcing layer 23 are fixed with a combination structure 3. The combination structure 3 includes a connecting seat 31, a connecting bolt 32 and a connecting block 33. The connecting seat 31 is evenly fixed on the outer wall of one side of the reinforcing layer 23. The connecting bolt 32 passes through both sides of the inside of the connecting seat 31. The connecting block 33 is evenly fixed on the outer wall of the reinforcing layer 23 away from the connecting seat 31. The connecting seat 31 and the connecting block 33 are symmetrically distributed on both sides of the reinforcing layer 23. The connecting block 33 and the connecting seat 31 are engaged and connected.

[0019] By engaging the connecting seat 31 with the connecting block 33, the shear resistance is improved compared to the traditional flat joint structure. The connecting bolt 32 allows for quick assembly and disassembly of the bricks, and the modular design can improve construction efficiency.

[0020] Reference Figure 1 and Figures 3-5 Both ends of the base brick 1 are fixed with protective structures 4. The protective structures 4 include an adhesive layer 41, a protective layer 42 and a fixing bolt 43. The adhesive layer 41 is set on the outer wall of both ends of the base brick 1. The protective layer 42 is fixed on the outer wall of the adhesive layer 41. The fixing bolt 43 penetrates the corner position inside the protective layer 42. The adhesive layer 41 is a high-temperature ceramic adhesive layer, the protective layer 42 is a corundum brick layer, and one end of the fixing bolt 43 extends into the interior of the reinforcing layer 23.

[0021] The protective layer 42 is a corundum brick layer that can protect the ends of the brick from mechanical impact and slag erosion. The fixing bolt 43 can transfer thermal stress to the overall structure and reduce the risk of edge cracking. The adhesive layer 41 is a high-temperature ceramic adhesive layer that can seal the joints and prevent high-temperature gas leakage.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. High-strength heat-insulating bricks for furnace bottom, including base bricks (1); Its features are: A reinforcing structure (2) is fixed to the outside of the base brick (1). The reinforcing structure (2) includes an insulation layer (21), a transition layer (22) and a reinforcing layer (23). The insulation layer (21) is fixed to the outside of the base brick (1). The transition layer (22) is fixed to the outside of the insulation layer (21). The reinforcing layer (23) is fixed to the outside of the transition layer (22). Both sides of the reinforcing layer (23) are fixed with a combined structure (3); The base brick (1) is fixed with protective structures (4) at both ends.

2. The high-strength heat-insulating brick for furnace bottom according to claim 1, characterized in that: The insulation layer (21) is an alumina hollow sphere brick layer, the transition layer (22) is a high alumina fiber felt layer, and the reinforcing layer (23) is a silicon carbide brick.

3. The high-strength heat-insulating brick for furnace bottom according to claim 1, characterized in that: The combined structure (3) includes a connecting seat (31), a connecting bolt (32) and a connecting block (33). The connecting seat (31) is uniformly fixed on the outer wall of one side of the reinforcing layer (23). The connecting bolt (32) passes through both sides inside the connecting seat (31). The connecting block (33) is uniformly fixed on the outer wall of the reinforcing layer (23) away from the connecting seat (31).

4. The high-strength heat-insulating brick for furnace bottom according to claim 3, characterized in that: The connecting seat (31) and the connecting block (33) are symmetrically distributed on both sides of the reinforcing layer (23), and the connecting block (33) and the connecting seat (31) are engaged and connected.

5. The high-strength heat-insulating brick for furnace bottom according to claim 1, characterized in that: The protective structure (4) includes an adhesive layer (41), a protective layer (42), and a fixing bolt (43). The adhesive layer (41) is provided on the outer wall at both ends of the base brick (1). The protective layer (42) is fixed on the outer wall of the adhesive layer (41). The fixing bolt (43) passes through the corner position inside the protective layer (42).

6. The high-strength heat-insulating brick for furnace bottom according to claim 5, characterized in that: The adhesive layer (41) is a high-temperature ceramic adhesive layer, and the protective layer (42) is a corundum brick layer.

7. The high-strength heat-insulating brick for furnace bottom according to claim 5, characterized in that: One end of each fixing bolt (43) extends into the interior of the reinforcing layer (23).

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