Wall brick structure of high-temperature hollow furnace

Abstract

A high-temperature hollow furnace wall brick structure relates to the technical field of high-temperature kilns and comprises a wall brick body, the wall brick body is composed of two side plates and rib plates, the two side plates are arranged in parallel at intervals, the rib plates are arranged on the two sides between the two side plates, and a hollow furnace wall brick with a cavity in the middle is formed. A light heat insulation material is arranged in a middle cavity of the hollow furnace wall brick, and square bosses extending outwards are arranged in the middles of the rib plates on the two sides so that the rib plates can form a convex structure. By changing the structure of the rib plate, the strength of the rib plate is improved, the stability of the furnace wall is improved, the service life of the furnace wall is prolonged, the problem that the rib plate is prone to fracture in the high-temperature using process of the hollow furnace wall is solved, the structure is simple, the rib plate is arranged to be of a convex structure, and the influence on the heat insulation effect of the furnace wall is small. And the fracture probability of the rib plate is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of high-temperature kilns, and in particular to a high-temperature hollow furnace wall brick structure. Background Technology

[0002] As is well known, hollow furnace wall bricks are a type of composite furnace wall structure. Because lightweight insulation materials are filled in the hollow parts, the furnace wall has a good heat insulation effect and is therefore widely used. However, hollow furnace wall bricks are prone to stiffener breakage during high-temperature use. The main reasons for stiffener breakage are: (1) The inner plate of the hollow furnace wall brick is located in the high-temperature zone of the furnace and there is a large temperature difference with the outer plate, which causes the stiffener to generate large thermal stress; (2) The inner plate of the hollow furnace wall brick is located in the high-temperature zone of the furnace. Due to thermal expansion and compression, a small amount of shear force is generated. The breakage of the stiffener directly affects the stability of the furnace wall and also directly affects the service life of the high-temperature kiln. If the stiffener is thickened, it will affect the heat insulation effect of the furnace wall. Therefore, it has become a basic demand of those skilled in the art to propose a high-temperature hollow furnace wall brick structure that can have a smaller impact on the heat insulation effect of the furnace wall and improve the strength of the stiffener. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this utility model discloses a high-temperature hollow furnace wall brick structure.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0005] A high-temperature hollow furnace wall brick structure includes a wall brick body, which is composed of side plates and stiffeners. Two side plates are arranged in parallel and spaced apart. Stiffeners are provided on both sides between the two side plates to form a hollow furnace wall brick with a cavity in the middle. Lightweight heat insulation material is provided in the cavity in the middle of the hollow furnace wall brick. Square protrusions extending outward are provided in the middle of the stiffeners on both sides, so that the stiffeners form a convex structure.

[0006] The high-temperature hollow furnace wall brick structure has a convex opening formed between the convex structure at both ends of the wall brick body and the two side plates, and a lightweight heat insulation material is provided between the convex opening and the convex opening of the adjacent wall brick bodies on the left and right.

[0007] In the high-temperature hollow furnace wall brick structure, the width W of the square boss is one-third of the width between the two side plates, W=20~40mm, and the height H of the square boss is lower than the height B between the bottom surface of the side plate and the outer end surface of the side plate, H=10~40mm.

[0008] A high-temperature hollow furnace wall brick structure includes a wall brick body, which is composed of side plates and stiffeners. Two side plates are arranged in parallel and spaced apart. Stiffeners are provided on both sides between the two side plates to form a hollow furnace wall brick with a cavity in the middle. Lightweight heat insulation material is provided in the cavity in the middle of the hollow furnace wall brick. Trapezoidal protrusions extending outward are provided in the middle of the stiffeners on both sides, so that the stiffeners form a convex structure.

[0009] The high-temperature hollow furnace wall brick structure has a convex opening formed between the convex structure at both ends of the wall brick body and the two side plates, and a lightweight heat insulation material is provided between the convex opening and the convex opening of the adjacent wall brick bodies on the left and right.

[0010] In the high-temperature hollow furnace wall brick structure, the top width of the trapezoidal boss is W1=10~40mm, the bottom width of the trapezoidal boss is W2=15~50mm, the height of the trapezoidal boss is H1=10~40mm, the bottom width W2 of the trapezoidal boss is one-third of the width between the two side plates 1, and the height H1 of the trapezoidal boss is lower than the height B1 between the bottom surface of the side plate and the outer end surface of the side plate.

[0011] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0012] The high-temperature hollow furnace wall brick structure described in this utility model improves the strength of the ribs by changing their structure, thereby enhancing the stability and service life of the furnace wall. It solves the problem of rib breakage that easily occurs during high-temperature use of hollow furnace walls. The structure of this utility model is simple, and the ribs are set as convex structures, which has little impact on the heat insulation effect of the furnace wall and reduces the probability of rib breakage. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention with a square boss.

[0014] Figure 2 yes Figure 1 A schematic diagram of the planar structure.

[0015] Figure 3 This is a three-dimensional structural diagram of the present invention with a trapezoidal boss.

[0016] Figure 4 yes Figure 2 A schematic diagram of the planar structure.

[0017] In the diagram: 1. Side plate; 2. Rib plate; 3. Square boss; 4. Trapezoidal boss. Detailed Implementation

[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Combined with appendix Figure 1-2 The high-temperature hollow furnace wall brick structure includes a wall brick body, which is composed of side plates 1 and stiffening plates 2. Two side plates 1 are arranged in parallel and spaced apart. Stiffening plates 2 are provided on both sides between the two side plates 1, forming a hollow furnace wall brick with a cavity in the middle. Lightweight heat insulation material is provided in the cavity in the middle of the hollow furnace wall brick. Square protrusions 3 extending outward are provided in the middle of the stiffening plates 2 on both sides, so that the stiffening plates 2 form a convex structure. The convex structures at both ends of the wall brick body form convex openings with the two side plates 1. Lightweight heat insulation material is provided between the convex openings and the convex openings of the adjacent wall brick bodies on the left and right. The width W of the square protrusions 3 is one-third of the width between the two side plates 1, W=20~40mm. The height H of the square protrusions 3 is lower than the height B between the bottom surface of the side plate 1 and the outer end surface of the side plate 1, H=10~40mm.

[0020] Combined with appendix Figure 3-4 The high-temperature hollow furnace wall brick structure includes a wall brick body, which is composed of side plates 1 and stiffening plates 2. Two side plates 1 are arranged in parallel at intervals, and stiffening plates 2 are provided on both sides between the two side plates 1, forming a hollow furnace wall brick with a cavity in the middle. Lightweight heat insulation material is placed in the cavity in the middle of the hollow furnace wall brick. Trapezoidal protrusions 4 extending outward are provided in the middle of the stiffening plates 2 on both sides, so that the stiffening plates 2 form a convex structure. The convex structures at both ends of the wall brick body and the two side plates 1 form a... The convex opening is provided with a lightweight heat insulation material between the convex opening and the convex opening of the adjacent wall brick body; the top width of the trapezoidal protrusion 4 is W1=10~40mm, the bottom width of the trapezoidal protrusion 4 is W2=15~50mm, the height of the trapezoidal protrusion 4 is H1=10~40mm, the bottom width W2 of the trapezoidal protrusion 4 is one-third of the width between the two side plates 1, and the height H1 of the trapezoidal protrusion 4 is lower than the height B1 between the bottom surface of the side plate 1 and the outer end surface of the side plate 1. Example

[0021] A small electric furnace requires small hollow furnace wall bricks. The operating temperature is 1600℃, and the furnace volume is approximately 0.2 m³. 3The furnace lining is constructed using the high-temperature hollow furnace wall bricks described in this patent. The wall brick body has an external dimension of 220mm in length, 110mm in width, and 120mm in height, with a side plate thickness of 25mm. The reinforcing ribs 2 are constructed with a square boss structure 3, with a length C=80mm, a thickness D=20mm, a width W=20mm, and a height H=10mm. 1800℃ ceramic fiber material is filled in the central cavity of the hollow furnace wall bricks, between the convex openings and the convex openings of the adjacent wall brick bodies. This results in a 25% reduction in the actual weight of the hollow furnace wall bricks and a 20% reduction in heat storage. In actual use, the electric furnace has undergone 45 furnace cycles without any breakage of the reinforcing ribs 2, extending its service life by at least 50% compared to existing technologies. Example

[0022] A medium-sized electric furnace requires medium-sized hollow furnace wall bricks. The operating temperature is 1700℃, and the furnace volume is approximately 1m³. 3 The furnace chamber has a strong reducing atmosphere and good sealing properties. The furnace lining is constructed using the high-temperature hollow furnace wall bricks described in this patent. The wall brick body has external dimensions of 280mm in length, 150mm in width, and 160mm in height, with a side plate thickness of 30mm. The reinforcing ribs 2 are square bosses 3 with a length C=120mm, a thickness D=30mm, a width W=30mm, and a height H=25mm. 1800℃ ceramic fiber material is filled in the central cavity of the hollow furnace wall bricks, between the convex openings and the convex openings of the adjacent wall brick bodies. This hollow furnace wall brick reduces the actual weight by 28% and the heat storage capacity by 25%. In actual use, the electric furnace has undergone 32 furnace cycles without any breakage of the reinforcing ribs 2, extending its service life by at least 50% compared to existing technologies. Example

[0023] A small tunnel kiln requires large hollow furnace wall bricks. The operating temperature is 1500℃. The total length of the tunnel kiln is 50m, the furnace width is 1m, and the height is 0.6m. The furnace lining is constructed using the high-temperature hollow furnace wall bricks described in this patent. The brick body has external dimensions of 320mm in length, 210mm in width, and 200mm in height, with a side plate thickness of 35mm. The reinforcing ribs 2 are trapezoidal bosses 4, with a length C=140mm, a thickness D=35mm, a top width W1=40mm, a bottom width W2=50mm, and a height H=40mm. 1600℃ ceramic fiber material is filled in the central cavity of the hollow furnace wall brick, between the convex opening and the convex openings of the adjacent wall brick bodies. This hollow furnace wall brick reduces the actual weight by 30% and the heat storage capacity by 30%. In actual use, the electric furnace has been used continuously for 3 months without any breakage of the rib plate 2, which extends the service life by at least 50% compared with the existing technology.

[0024] The parts of this utility model not described in detail are existing technologies.

[0025] The embodiments selected herein for the purpose of disclosing the inventive objectives of this utility model are currently considered appropriate; however, it should be understood that this utility model is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and utility model.

Claims

1. A high-temperature hollow furnace wall brick structure, comprising a wall brick body, characterized in that: The wall brick body is composed of side plates and stiffening plates. Two side plates are set in parallel intervals, and stiffening plates are provided on both sides between the two side plates to form a hollow furnace wall brick with a cavity in the middle. Lightweight heat insulation material is placed in the cavity in the middle of the hollow furnace wall brick. Square protrusions extending outward are provided in the middle of the stiffening plates on both sides, so that the stiffening plates form a convex structure.

2. The high-temperature hollow furnace wall brick structure according to claim 1, characterized in that: The convex structures at both ends of the wall brick body form convex openings with the two side plates, and lightweight heat insulation material is provided between the convex openings and the convex openings of the adjacent wall brick bodies on the left and right.

3. The high-temperature hollow furnace wall brick structure according to claim 1, characterized in that: The width W of the square boss is one-third of the width between the two side plates, W = 20-40mm, and the height H of the square boss is lower than the height B between the bottom surface of the side plate and the outer end surface of the side plate, H = 10-40mm.

4. A high-temperature hollow furnace wall brick structure, comprising a wall brick body, characterized in that: The wall brick body is composed of side plates and stiffening plates. Two side plates are set in parallel intervals, and stiffening plates are provided on both sides between the two side plates to form a hollow furnace wall brick with a cavity in the middle. Lightweight heat insulation material is placed in the cavity in the middle of the hollow furnace wall brick. Trapezoidal protrusions extending outward are provided in the middle of the stiffening plates on both sides, so that the stiffening plates form a convex structure.

5. The high-temperature hollow furnace wall brick structure according to claim 4, characterized in that: The convex structures at both ends of the wall brick body form convex openings with the two side plates, and lightweight heat insulation material is provided between the convex openings and the convex openings of the adjacent wall brick bodies on the left and right.

6. The high-temperature hollow furnace wall brick structure according to claim 4, characterized in that: The top width of the trapezoidal boss is W1 = 10-40mm, the bottom width of the trapezoidal boss is W2 = 15-50mm, the height of the trapezoidal boss is H1 = 10-40mm, the bottom width W2 of the trapezoidal boss is one-third of the width between the two side plates (1), and the height H1 of the trapezoidal boss is lower than the height B1 between the bottom surface of the side plate and the outer end surface of the side plate.

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