In-kiln fire-resistant prefabricated part for rotary kiln

Abstract

The utility model relates to the technical field of rotary kiln prefabricated parts, and discloses an in-kiln fire-resistant prefabricated part for a rotary kiln, which comprises a connecting piece, first high-temperature-resistant blocks are arranged at four diagonal positions of the lower surface of the connecting piece, and second high-temperature-resistant blocks are symmetrically arranged on the lower surface of the connecting piece. According to the in-kiln fire-resistant prefabricated part for the rotary kiln, the first high-temperature-resistant blocks are arranged at the four opposite angle positions of the lower surface of the connecting piece, the second high-temperature-resistant blocks are symmetrically arranged on the lower surface of the connecting piece, the first high-temperature-resistant blocks are arranged at the four opposite angle positions of the lower surface of the connecting piece, and a clamping groove is formed between the first high-temperature-resistant blocks and the second high-temperature-resistant blocks; the clamping grooves are formed between the first high-temperature-resistant blocks and the second high-temperature-resistant blocks, the heat preservation and insulation pieces are arranged in the clamping grooves, a broken bridge structure can be formed, the connecting pieces are prevented from making direct contact with the kiln wall, and therefore heat conduction is cut off, and heat loss is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary kiln prefabrication components, specifically a refractory prefabrication component for rotary kilns. Background Technology

[0002] Traditional rotary kilns are constructed by casting refractory material on-site. After casting, the refractory material requires curing and baking, which takes a considerable amount of time to ensure adequate strength. For businesses, each day of downtime translates into significant economic losses. Therefore, improvements have been made to this traditional technology, namely, prefabricating the refractory material in the factory and then assembling it onto the rotary kiln on-site.

[0003] Currently, some refractory prefabricated components for rotary kilns on the market include, for example, a utility model patent with authorization announcement number CN218821649U that discloses a composite insulation prefabricated component for rotary kilns. This prefabricated component is made by setting a clay insulation prefabricated component in a cross shape and fitting it into the cross groove of the high-alumina prefabricated component, so that the side and bottom end faces of the clay insulation prefabricated component are flush with the corresponding end faces of the high-alumina prefabricated component. However, this setting causes the high-alumina prefabricated component to bypass the clay insulation prefabricated component and directly contact the kiln wall, thereby forming a thermal bridge effect, and heat will be lost rapidly through heat conduction.

[0004] Therefore, we propose a pre-fabricated refractory component for rotary kilns to address the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to solve the problem of some existing refractory prefabricated components for rotary kilns. By setting the clay insulation prefabricated component in a cross shape and fitting it into the cross groove of the high-alumina prefabricated component, the side and bottom ends of the clay insulation prefabricated component are flush with the corresponding ends of the high-alumina prefabricated component. However, this arrangement causes the high-alumina prefabricated component to bypass the clay insulation prefabricated component and directly contact the kiln wall, thus forming a thermal bridge effect and causing heat to be lost rapidly through heat conduction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pre-fabricated refractory component for a rotary kiln, comprising: a connector, wherein a first high-temperature resistant block is provided at each of the four diagonal positions on the lower surface of the connector, and a second high-temperature resistant block is symmetrically provided on the lower surface of the connector, wherein a clamping groove is formed between a plurality of the first high-temperature resistant blocks and the second high-temperature resistant blocks, and a heat insulation component is provided in the clamping groove;

[0007] The first high-temperature resistant block is provided with a first connecting block, and the lower surface of the connector is provided with a first connecting slot at each of the four diagonal positions. The first connecting slot is adapted to the first connecting block. The second high-temperature resistant block is provided with a second connecting block, and the lower surface of the connector is provided with a second connecting slot symmetrically. The second connecting slot is adapted to the second connecting block.

[0008] Bolts are provided between the first high-temperature resistant block and the second high-temperature resistant block and the thermal insulation component.

[0009] Furthermore, the cross-sections of the first connecting block and the first connecting slot, as well as the second connecting block and the second connecting slot, are all configured as T-shaped structures.

[0010] Furthermore, an anchor is pre-embedded in the thermal insulation component. The anchor is configured as a trapezoidal structure, and the lower end of the anchor extends out of the bottom surface of the thermal insulation component.

[0011] Furthermore, the direction of the first connecting slot is perpendicular to the direction of the second connecting slot.

[0012] Furthermore, the thermal insulation component has a notch, and both the first high-temperature resistant block and the second high-temperature resistant block are adapted to the notch. Both the first high-temperature resistant block and the second high-temperature resistant block have an adaptation groove adapted to the threaded component. The inner wall of the notch has a threaded hole for threaded connection with the bolt.

[0013] Furthermore, the lower end of the anchor is folded over to form a folded foot structure.

[0014] Furthermore, a fitting protrusion is provided on one side of the connector, and a fitting groove is provided on the other side of the connector.

[0015] The beneficial effects of this utility model are as follows: by setting first high-temperature resistant blocks at the four diagonal positions on the lower surface of the connector, and symmetrically setting second high-temperature resistant blocks on the lower surface of the connector, a clamping groove is formed between the multiple first high-temperature resistant blocks and the second high-temperature resistant blocks, and a heat insulation component is set in the clamping groove, which can form a broken bridge structure, prevent the connector from directly contacting the kiln wall, thereby cutting off heat conduction and preventing heat loss. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the refractory prefabricated component for rotary kiln of this utility model;

[0017] Figure 2 This is a first cross-sectional view of the precast refractory component for rotary kiln of this utility model.

[0018] Figure 3This is a second cross-sectional view of the precast refractory component for rotary kiln of this utility model.

[0019] Figure 4 This is a schematic diagram of the connecting structure of the refractory prefabricated component for rotary kiln of this utility model.

[0020] The names corresponding to each mark in the diagram:

[0021] 1. Connector; 2. First high-temperature resistant block; 3. Second high-temperature resistant block; 4. Thermal insulation component; 5. First connecting block; 6. First connecting slot; 7. Second connecting block; 8. Second connecting slot; 9. Bolt; 10. Anchor; 11. Fitting protrusion; 12. Fitting groove. Detailed Implementation

[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0023] Embodiments of this utility model:

[0024] like Figures 1-4As shown, this utility model provides a pre-fabricated refractory component for a rotary kiln, including a connector 1. First high-temperature resistant blocks 2 are provided at four diagonal positions on the lower surface of the connector 1, and second high-temperature resistant blocks 3 are symmetrically arranged on the lower surface of the connector 1. The first and second high-temperature resistant blocks 2 and 3 are both made of one or more of high-alumina bauxite clinker, brown corundum, and white corundum. Multiple first high-temperature resistant blocks 2 and second high-temperature resistant blocks 3 form a clamping groove, within which a heat-insulating component 4 is provided. The heat-insulating component 4 is made of basalt fiber. A first connecting block 5 is provided on the first high-temperature resistant block 2. First connecting slots 6 are provided at four diagonal positions on the lower surface of the connector 1, and the first connecting slots 6 are adapted to the first connecting blocks 5. Second connecting blocks 7 are provided on the second high-temperature resistant blocks 3. The lower surface of the connector 1 is symmetrically arranged... A second connecting slot 8 is provided, which is adapted to the second connecting block 7. Bolts 9 are provided between the first high-temperature resistant block 2 and the second high-temperature resistant block 3 and the thermal insulation component 4. The bolts 9 are ceramic bolts. The thermal insulation component 4 has a notch, which is adapted to the first high-temperature resistant block 2 and the second high-temperature resistant block 3. The first high-temperature resistant block 2 and the second high-temperature resistant block 3 have a matching groove adapted to the threaded part. The inner wall of the notch has a threaded hole for threaded connection with the bolt 9. The first high-temperature resistant block 2 and the second high-temperature resistant block 3 can form a broken bridge structure to prevent the connector 1 from directly contacting the kiln wall, thereby cutting off heat conduction and preventing heat loss. The bolts 9 can be clamped and fixed, further improving the stability between the first high-temperature resistant block 2 and the second high-temperature resistant block 3 and the thermal insulation component 4.

[0025] like Figures 1-4 As shown, the cross-sections of the first connecting block 5 and the first connecting slot 6, as well as the second connecting block 7 and the second connecting slot 8, are all set as T-shaped structures. The direction of the first connecting slot 6 is perpendicular to the direction of the second connecting slot 8. With this setting, in conjunction with the connection of the heat insulation component 4, the first high-temperature resistant block 2 and the second high-temperature resistant block 3 can be prevented from falling off.

[0026] like Figures 1-4 As shown, an anchor 10 is pre-embedded in the thermal insulation component 4. The anchor 10 is set as a trapezoidal structure, and the lower end of the anchor 10 extends out of the bottom surface of the thermal insulation component 4. The lower end of the anchor 10 is folded to form a folded foot structure, which can more effectively form a load-bearing structure.

[0027] like Figures 1-4 As shown, a fitting protrusion 11 is provided on one side of the connector 1, and a fitting groove 12 is provided on the other side of the connector 1. With this arrangement, during assembly, two adjacent connectors 1 can be aligned and fitted together through the fitting groove 12 and the fitting protrusion 11, thereby forming an effective positioning.

Claims

1. A pre-fabricated refractory component for a rotary kiln, characterized in that, include: A connector (1) is provided with a first high temperature resistant block (2) at each of the four diagonal positions on the lower surface of the connector (1), and a second high temperature resistant block (3) is symmetrically provided on the lower surface of the connector (1). A clamping groove is formed between the multiple first high temperature resistant blocks (2) and the second high temperature resistant blocks (3), and a heat insulation component (4) is provided in the clamping groove. The first high-temperature resistant block (2) is provided with a first connecting block (5), and the lower surface of the connector (1) is provided with four diagonal first connecting slots (6), which are adapted to the first connecting block (5). The second high-temperature resistant block (3) is provided with a second connecting block (7), and the lower surface of the connector (1) is provided with symmetrical second connecting slots (8), which are adapted to the second connecting block (7). Bolts (9) are provided between the first high-temperature resistant block (2) and the second high-temperature resistant block (3) and the thermal insulation component (4).

2. The precast refractory component for a rotary kiln according to claim 1, characterized in that: The cross-sections of the first connecting block (5), the first connecting slot (6), the second connecting block (7), and the second connecting slot (8) are all T-shaped.

3. The precast refractory component for a rotary kiln according to claim 1, characterized in that: An anchor (10) is pre-embedded in the thermal insulation component (4). The anchor (10) is configured as a trapezoidal structure, and the lower end of the anchor (10) extends out of the bottom surface of the thermal insulation component (4).

4. A pre-fabricated refractory component for a rotary kiln according to claim 1, characterized in that: The direction of the first connecting slot (6) is perpendicular to the direction of the second connecting slot (8).

5. A pre-fabricated refractory component for a rotary kiln according to claim 1, characterized in that: The heat insulation component (4) has a notch, and the first high temperature resistant block (2) and the second high temperature resistant block (3) are both adapted to the notch. The first high temperature resistant block (2) and the second high temperature resistant block (3) are both provided with an adaptation groove adapted to the threaded component. The inner wall of the notch is provided with a threaded hole for threaded connection with the bolt component (9).

6. A precast refractory component for a rotary kiln according to claim 3, characterized in that: The lower end of the anchor (10) is folded to form a folded foot structure.

7. A pre-fabricated refractory component for a rotary kiln according to claim 1, characterized in that: The connector (1) has a fitting protrusion (11) on one side and a fitting groove (12) on the other side.

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