Lining structure of high-temperature rotary kiln

Abstract

The utility model relates to the technical field of rotary kiln lining structures, in particular to a high-temperature rotary kiln lining structure which comprises a kiln body, a reinforcing layer arranged on the inner side of the kiln body, a heat preservation layer arranged on the inner side of the reinforcing layer, a heat insulation layer arranged on the inner side of the heat preservation layer, and a refractory brick layer arranged on the inner side of the heat insulation layer and composed of refractory brick bodies. A bending groove is formed in one side of the refractory brick body, a first limiting block and a second limiting block are arranged on the other side of the refractory brick body, a positioning groove is formed in the front side of the refractory brick body, a limiting protruding strip is arranged above the positioning groove, a limiting groove is formed in the rear side of the refractory brick body, and a positioning protruding block is arranged below the limiting groove. According to the utility model, the limiting blocks I of the adjacent refractory brick bodies are inserted into the bending grooves, and the adjacent refractory brick bodies are guided by the limiting blocks II until the limiting blocks I are propped against the inner sides of the bending grooves after passing through the turning parts of the bending grooves, so that the limiting of the refractory brick bodies is realized, and the flexibility during the assembly of the refractory brick is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary kiln lining structure, and in particular to a high-temperature rotary kiln lining structure. Background Technology

[0002] The rotary kiln lining is a refractory material that is lined on the inner surface of the rotary kiln shell. Its refractoriness is greater than 1580 degrees Celsius, and it can resist a series of physical and chemical reactions in the working space. The function of the rotary kiln lining in the rotary kiln is to protect the shell from high temperature damage, provide insulation, and reduce heat loss.

[0003] For example, patent number CN217979750U discloses a refractory material structure for a rotary kiln lining, including a rotary kiln. A refractory assembly is provided on the inner wall of the rotary kiln. The refractory assembly includes multiple fan-shaped prefabricated refractory bricks. A T-shaped sliding rod is provided on one side of each refractory brick, and a Z-shaped groove is formed on the side of the fan-shaped prefabricated refractory brick away from the T-shaped sliding rod. Multiple fan-shaped prefabricated refractory bricks are connected by a tail-joint connection. Adjacent fan-shaped prefabricated refractory bricks are connected by a T-shaped sliding rod and a Z-shaped groove structure. In this utility model, adjacent fan-shaped prefabricated refractory bricks are connected by a T-shaped sliding rod and a Z-shaped groove. Since each fan-shaped prefabricated refractory brick is a fan-shaped structure, after the fan-shaped prefabricated refractory bricks are installed, adjacent fan-shaped prefabricated refractory bricks will interact with each other, effectively preventing the fan-shaped prefabricated refractory bricks from falling off during subsequent use.

[0004] However, the existing high-temperature rotary kiln lining structure has low flexibility when assembling refractory bricks, resulting in time-consuming and labor-intensive assembly of refractory bricks, and the connection structure is prone to jamming and damage. Utility Model Content

[0005] In order to overcome the problem that the high-temperature rotary kiln lining structure has low flexibility when assembling refractory bricks, resulting in time-consuming and labor-intensive assembly of refractory bricks, and the connection structure is prone to jamming and damage.

[0006] The technical solution of this utility model is as follows: a high-temperature rotary kiln lining structure, including a kiln body, a reinforcing layer provided on the inner side of the kiln body, a heat insulation layer provided on the inner side of the reinforcing layer, a heat insulation layer provided on the inner side of the heat insulation layer, and a refractory brick layer composed of refractory bricks provided on the inner side of the heat insulation layer. A bending groove is provided on one side of the refractory brick, and a limiting block one and a limiting block two are provided on the other side of the refractory brick. A positioning groove is opened on the front side of the refractory brick, and a limiting protrusion is provided above the positioning groove. A limiting groove is opened on the rear side of the refractory brick, and a positioning protrusion is provided below the limiting groove.

[0007] Preferably, by setting a reinforcing layer, a heat insulation layer, and a heat insulation layer, the strength and heat insulation effect of the inner lining structure are improved; by setting a bending groove, a limiting block one, and a limiting block two, the stability of the connection between adjacent refractory bricks is improved; and by setting a positioning groove, a limiting protrusion, a limiting groove, and a positioning protrusion, the stability of the connection between front and rear refractory bricks is improved.

[0008] Preferably, the refractory bricks are arranged in a ring array, with heat-insulating mortar between adjacent refractory bricks, and an inner protective layer for fire prevention and heat insulation is provided on the inner side of the refractory brick layer.

[0009] As a preferred design, the bending groove is designed with a stepped structure, and both the first limiting block and the second limiting block are adapted to the inner side of the bending groove.

[0010] As a preferred embodiment, both limiting block one and limiting block two are designed with a circular structure. Both limiting block one and limiting block two are fixedly connected to the refractory brick body through a cylindrical rod, and the inner side of the cylindrical rod and the bending groove are mutually compatible.

[0011] Preferably, the second limiting block is located in front of the first limiting block, the first limiting block is close to the outer side of the refractory brick, and the second limiting block is close to the inner side of the refractory brick.

[0012] Preferably, the limiting protrusion and the positioning protrusion are integrally formed with the refractory brick body, and the inner sides of the positioning protrusion and the positioning groove are mutually compatible.

[0013] As a preferred option, both the limiting protrusion and the limiting groove are designed with an arc-shaped structure, and the inner sides of the limiting protrusion and the limiting groove are mutually compatible.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this high-temperature rotary kiln lining structure, the limiting block one of the adjacent refractory bricks is inserted into the bending groove. After passing the turning point of the bending groove, the limiting block two is also inserted into the bending groove to guide the adjacent refractory bricks until the limiting block one abuts against the inside of the bending groove, thereby limiting the refractory bricks and improving the flexibility of refractory brick assembly, avoiding jamming and damage to the connection structure.

[0016] 2. The high-temperature rotary kiln lining structure achieves front-to-back positioning of the front refractory bricks by inserting positioning protrusions into the positioning grooves of the rear row, while the limiting protrusions of the rear row are inserted into the limiting grooves of the front row refractory bricks, thereby improving the stability of the refractory brick connection. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural representation of the high-temperature rotary kiln lining of this utility model. Figure 1 ;

[0018] Figure 2 This utility model is shown. Figure 1Enlarged view of point A;

[0019] Figure 3 The diagram shown is a three-dimensional structural representation of the high-temperature rotary kiln lining of this utility model. Figure 2 ;

[0020] Figure 4 The diagram shown is a three-dimensional structural representation of the refractory brick of this utility model. Figure 1 ;

[0021] Figure 5 The diagram shown is a three-dimensional structural representation of the refractory brick of this utility model. Figure 2 .

[0022] Explanation of reference numerals in the attached drawings: 1. Kiln body; 2. Reinforcing layer; 3. Insulation layer; 4. Heat insulation layer; 5. Refractory brick body; 6. Inner protective layer; 7. Bending groove; 8. Limiting block one; 9. Limiting block two; 10. Positioning groove; 11. Limiting protrusion; 12. Limiting groove; 13. Positioning protrusion. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment: a high-temperature rotary kiln lining structure, including a kiln body 1, a reinforcing layer 2 provided on the inner side of the kiln body 1, a heat insulation layer 3 provided on the inner side of the reinforcing layer 2, a heat insulation layer 4 provided on the inner side of the heat insulation layer 3, and a refractory brick layer composed of refractory brick bodies 5 provided on the inner side of the heat insulation layer 4. A bending groove 7 is provided on one side of the refractory brick body 5, and a limiting block 1 8 and a limiting block 2 9 are provided on the other side of the refractory brick body 5. A positioning groove 10 is opened on the front side of the refractory brick body 5, and a limiting protrusion 11 is provided above the positioning groove 10. A positioning groove 11 is opened on the rear side of the refractory brick body 5. A limiting groove 12 is provided, and a positioning protrusion 13 is provided below the limiting groove 12. The limiting block 8 of the adjacent refractory brick 5 is inserted into the bending groove 7. After passing the turning point of the bending groove 7, the limiting block 9 is also inserted into the bending groove 7 to guide the adjacent refractory brick 5 until the limiting block 8 abuts against the inner side of the bending groove 7, thereby limiting the refractory brick 5. When the next row of refractory bricks 5 is erected, the positioning protrusion 13 is inserted into the positioning groove 10 of the rear row, and at the same time, the limiting protrusion 11 of the rear row is inserted into the limiting groove 12 of the front row of refractory bricks 5 to achieve the front and rear positioning of the front row of refractory bricks 5.

[0025] Please see Figures 1-4In this embodiment, the refractory bricks 5 are arranged in a ring array, and heat-insulating mortar is provided between adjacent refractory bricks 5. An inner protective layer 6 for fire prevention and heat insulation is provided on the inner side of the refractory brick layer. The bending groove 7 is designed with a stepped structure. The limiting block 1 8 and the limiting block 2 9 are adapted to the inner side of the bending groove 7. The reinforcing layer 2 is installed on the inner side of the kiln body 1. The heat insulation layer 3, the heat insulation layer 4, and the refractory bricks 5 are fixed on the inner side of the reinforcing layer 2 by the cooperation of the adhesive mortar and bolts, thereby improving the strength of the inner lining structure and the heat insulation effect.

[0026] Please see Figures 2-5 In this embodiment, both limiting block 8 and limiting block 9 are circular in design. Both limiting blocks 8 and 9 are fixedly connected to the refractory brick body 5 via cylindrical rods. The cylindrical rods and the inner sides of the bending grooves 7 are mutually adapted. Limiting block 9 is located in front of limiting block 8. Limiting block 8 is close to the outer side of the refractory brick body 5 and close to the inner side of the refractory brick body 5. Limiting protrusions 11 and locating protrusions 13 are integrally formed with the refractory brick body 5. The inner sides of the locating protrusions 13 and locating grooves 10 are mutually adapted. Limiting protrusions 11 and locating grooves 12 are arc-shaped in design. The inner sides of the limiting protrusions 11 and locating grooves 12 are mutually adapted, thus connecting adjacent refractory brick bodies. The limiting block 8 of the firebrick body 5 is inserted into the bending groove 7. After passing the turning point of the bending groove 7, the limiting block 9 is also inserted into the bending groove 7 to guide the adjacent firebrick body 5 until the limiting block 8 abuts against the inner side of the bending groove 7, thereby limiting the firebrick body 5. When the next row of firebrick bodies 5 is laid, the positioning protrusion 13 is inserted into the positioning groove 10 of the rear row, and the limiting protrusion 11 of the rear row is inserted into the limiting groove 12 of the front row of firebrick bodies 5 to achieve the front and rear positioning of the front row of firebrick bodies 5. After the firebrick bodies 5 are laid, heat-insulating mortar is filled into the gaps, and an inner protective layer is laid on the inner wall of the firebrick body 5 to further improve the fire resistance and heat insulation of the firebrick layer.

[0027] During operation, the reinforcing layer 2 is installed inside the kiln body 1. The insulation layer 3, heat insulation layer 4, and refractory bricks 5 are fixed to the inside of the reinforcing layer 2 by means of adhesive mortar and bolts. The limiting block 8 of the adjacent refractory brick 5 is inserted into the bending groove 7. After passing the turning point of the bending groove 7, the limiting block 9 is also inserted into the bending groove 7 to guide the adjacent refractory brick 5 until the limiting block 8 abuts against the inside of the bending groove 7, thereby limiting the refractory brick 5. When the next row of refractory bricks 5 is laid, the positioning protrusion 13 is inserted into the positioning groove 10 of the rear row, and the limiting protrusion 11 of the rear row is inserted into the limiting groove 12 of the front row of refractory bricks 5 to achieve the front and rear positioning of the front row of refractory bricks 5. After the refractory bricks 5 are laid, heat insulation mortar is filled into the gaps, and an inner protective layer is laid on the inner wall of the refractory bricks 5 to further improve the fire resistance and heat insulation of the refractory brick layer.

[0028] Through the above steps, the limiting block 8 of the adjacent refractory brick 5 is inserted into the bending groove 7. After passing the turning point of the bending groove 7, the limiting block 9 is also inserted into the bending groove 7 to guide the adjacent refractory brick 5 until the limiting block 8 abuts against the inside of the bending groove 7, thereby limiting the refractory brick 5. When the next row of refractory bricks 5 is erected, the positioning protrusion 13 is inserted into the positioning groove 10 of the rear row, and the limiting protrusion 11 of the rear row is inserted into the limiting groove 12 of the front row of refractory bricks 5 to achieve the front and rear positioning of the front row of refractory bricks 5. This solves the problem that the high-temperature rotary kiln lining structure has low flexibility when assembling refractory bricks, resulting in time-consuming and labor-intensive assembly of refractory bricks, and the connection structure is prone to jamming and damage.

Claims

1. A high-temperature rotary kiln lining structure, comprising a kiln body (1), characterized in that: A reinforcing layer (2) is provided on the inner side of the kiln body (1), a heat insulation layer (3) is provided on the inner side of the reinforcing layer (2), a heat insulation layer (4) is provided on the inner side of the heat insulation layer (3), and a refractory brick layer composed of refractory brick bodies (5) is provided on the inner side of the heat insulation layer (4). A bending groove (7) is provided on one side of the refractory brick body (5), and a limiting block one (8) and a limiting block two (9) are provided on the other side of the refractory brick body (5). A positioning groove (10) is provided on the front side of the refractory brick body (5), and a limiting protrusion (11) is provided above the positioning groove (10). A limiting groove (12) is provided on the rear side of the refractory brick body (5), and a positioning protrusion (13) is provided below the limiting groove (12).

2. The high-temperature rotary kiln lining structure according to claim 1, characterized in that: The refractory bricks (5) are arranged in a ring array, and heat-insulating mortar is provided between adjacent refractory bricks (5). An inner protective layer (6) for fire prevention and heat insulation is provided on the inner side of the refractory brick layer.

3. The high-temperature rotary kiln lining structure according to claim 1, characterized in that: The bending groove (7) is designed with a stepped structure, and the first limiting block (8) and the second limiting block (9) are adapted to the inner side of the bending groove (7).

4. The high-temperature rotary kiln lining structure according to claim 1, characterized in that: Both limiting block one (8) and limiting block two (9) are designed with a circular structure. Both limiting block one (8) and limiting block two (9) are fixedly connected to the refractory brick body (5) by a cylindrical rod. The cylindrical rod and the inner side of the bending groove (7) are mutually compatible.

5. The high-temperature rotary kiln lining structure according to claim 1, characterized in that: Limiting block 2 (9) is located in front of limiting block 1 (8), limiting block 1 (8) is close to the outer side of the refractory brick body (5), and limiting block 1 (8) is close to the inner side of the refractory brick body (5).

6. The high-temperature rotary kiln lining structure according to claim 1, characterized in that: The limiting protrusion (11) and the positioning protrusion (13) are integrally formed with the refractory brick body (5), and the inner sides of the positioning protrusion (13) and the positioning groove (10) are mutually compatible.

7. The high-temperature rotary kiln lining structure according to claim 1, characterized in that: The limiting protrusion (11) and the limiting groove (12) are both designed with an arc shape, and the inner sides of the limiting protrusion (11) and the limiting groove (12) are mutually compatible.

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