A refractory castable structure for furnace lining

Abstract

The utility model relates to the technical field of castables, and specifically discloses a furnace lining refractory castable structure, including a complete furnace lining layer and a detachable furnace lining layer, the number of detachable furnace lining layers is several, and the several detachable furnace lining layers are fixedly arranged around the inside of the complete furnace lining layer, the complete furnace lining layer is penetrated with several groups of matching holes, and the back of the detachable furnace lining layer is fixedly arranged with anchor screws, the anchor screws pass through the matching holes, and the ends of the anchor screws are threadedly connected with nuts. The technical solution of the utility model firmly assembles the detachable furnace lining layer into the inside of the complete furnace lining layer through the anchor screws and nuts, and the detachable furnace lining layer cooperates with the complete furnace lining layer to form a double-layer combined furnace lining. Compared with the assembled furnace lining, the double-layer combined furnace lining retains the advantages of good sealing and small heat loss, and at the same time has the advantage of convenient replacement of local furnace lining damage.

Description

Technical Field

[0001] The utility model relates to the technical field of castables, in particular to a furnace lining refractory castable structure. Background Art

[0002] As a protective layer of the inner wall of the furnace, the furnace lining first protects the metal shell of internal equipment such as boilers and furnaces from high-temperature corrosion and burning. This is achieved through its high-temperature resistant ceramic material, which can effectively resist various chemical corrosion and mechanical wear in high-temperature environments. The furnace lining not only protects the furnace itself, but also protects the refractory materials in the high-temperature area of ​​the furnace to prevent chemical reactions and wear. At the same time, the furnace lining can also maintain the flatness and surface roughness of the inner wall of the furnace, which is crucial to ensuring the quality of production. At present, the traditional furnace lining is an integrated casting. When the local furnace lining is severely damaged, it can only be replaced as a whole, and the cost of use is high. The existing patent publication number is: 202123436562.5 A furnace lining refractory castable structure adopts an assembled furnace lining structure, which can solve the problem that the local furnace lining can only be replaced as a whole when it is severely damaged. However, the assembled furnace lining structure has the defects of heat loss and poor stability. The assembled furnace lining structure cannot take into account the excellent stability of the traditional integral furnace lining and needs to be improved. Therefore, we propose a furnace lining refractory castable structure. Utility Model Content

[0003] The utility model aims to provide a furnace lining refractory castable structure, which solves the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a furnace lining refractory castable structure, including a complete furnace lining layer and a detachable furnace lining layer, the number of detachable furnace lining layers is several, and the several detachable furnace lining layers are fixedly arranged around the inside of the complete furnace lining layer, the complete furnace lining layer is penetrated with several groups of matching holes, and the back of the detachable furnace lining layer is fixedly provided with anchor screws, the anchor screws pass through the matching holes and the ends of the anchor screws are threadedly connected with nuts.

[0005] As a preferred implementation of the technical solution of the present application, the middle layer of the complete furnace lining is provided with a heat storage layer A and a steel cage A, and the middle layer of the detachable furnace lining is provided with a heat storage layer B and a steel cage B.

[0006] As a preferred implementation of the technical solution of the present application, the removable furnace lining layer has a horizontal arc-shaped cross section, and the center of the removable furnace lining layer is aligned with the center of the complete furnace lining layer.

[0007] As a preferred implementation of the technical solution of the present application, the heat storage layer A and the heat storage layer B are both refractory mud.

[0008] As a preferred implementation of the technical solution of the present application, the number of removable furnace lining layers is six, the number of anchoring screws arranged on the back of each removable furnace lining layer is four, and the number of each group of matching holes is four.

[0009] As a preferred implementation of the technical solution of the present application, the thickness of the detachable furnace lining layer is consistent with the thickness of the complete furnace lining layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The technical solution of the present application uses anchor screws and nuts to firmly assemble the detachable furnace lining layer into the interior of the complete furnace lining layer. The detachable furnace lining layer and the complete furnace lining layer form a double-layer combined furnace lining. Compared with the assembled furnace lining, the double-layer combined furnace lining retains the advantages of good sealing and low heat loss, and at the same time has the advantage of convenient replacement of local furnace lining damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a three-dimensional diagram of a furnace lining refractory castable structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of a complete furnace lining;

[0015] Figure 3 It is a cross-sectional view of a removable furnace lining.

[0016] In the figure: 1. Complete furnace lining; 2. Removable furnace lining; 3. Anchor screw; 4. Nut; 5. Matching hole; 6. Heat storage layer A; 7. Heat storage layer B. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Embodiment 1, as Figure 1-3 As shown, the utility model provides a technical solution: a furnace lining refractory castable structure, including a complete furnace lining layer 1 and a detachable furnace lining layer 2, the number of detachable furnace lining layers 2 is several, and the several detachable furnace lining layers 2 are fixedly arranged around the inside of the complete furnace lining layer 1, the complete furnace lining layer 1 is penetrated by a plurality of groups of matching holes 5, and the back of the detachable furnace lining layer 2 is fixedly provided with anchor screws 3, the anchor screws 3 pass through the matching holes 5 and the ends of the anchor screws 3 are threadedly connected with nuts 4.

[0019] In a specific embodiment of the utility model, the complete furnace lining layer 1 is formed by pouring the furnace lining material into a cylindrical steel cage and solidifying it. At the same time, before pouring the furnace lining material, a heat storage layer is filled inside the cylindrical steel cage. The heat storage layer is made of refractory mud (made of high-alumina, bentonite, siliceous materials, etc., sintered at high temperature, quartz sand, graphite, water glass, etc., and has the advantages of extremely high temperature resistance and mechanical loss resistance);

[0020] The removable furnace lining layer 2 is formed by pouring the furnace lining material in the arc-shaped steel cage and solidifying it. At the same time, before pouring the furnace lining material, the heat storage layer is filled in the arc-shaped steel cage. The number of removable furnace lining layers 2 is six, and the six removable furnace lining layers 2 are closely attached to the inner wall of the complete furnace lining layer 1 (such as Figure 1 As shown), the two adjacent removable furnace lining layers 2 are also in close contact, the anchoring screw 3 of the removable furnace lining layer 2 passes through the reserved matching hole 5, and then the nut 4 is tightened at one end of the anchoring screw 3, so that the removable furnace lining layer 2 is firmly fixed to the inner wall of the complete furnace lining layer 1.

[0021] In the preferred technical solution, the middle layer of the complete furnace lining 1 is provided with a heat storage layer A6 and a steel cage A, and the middle layer of the detachable furnace lining 2 is provided with a heat storage layer B7 and a steel cage B. The steel cage A and the steel cage B are used to provide basic support, and the heat storage layer A6 and the heat storage layer B7 provide heat storage and heat release functions to reduce heat loss.

[0022] In the preferred technical solution, the removable furnace lining layer 2 has an arc-shaped horizontal cross-section, and the center of the removable furnace lining layer 2 is aligned with the center of the complete furnace lining layer 1, so that the removable furnace lining layer 2 and the complete furnace lining layer 1 are perfectly fitted and installed.

[0023] In the preferred technical solution, both the heat storage layer A6 and the heat storage layer B7 are made of refractory clay. Refractory clay has the advantages of extremely high temperature resistance and resistance to mechanical loss, and has the effect of reducing heat loss.

[0024] In the preferred technical solution, the number of removable furnace lining layers 2 is six, the number of anchoring screws 3 arranged on the back of each removable furnace lining layer 2 is four, the number of each group of matching holes 5 is four, and the anchoring screws 3 are combined with the matching holes 5 and cooperate with the anchoring screws 3 through the nuts 4 to realize the removable installation of the removable furnace lining layer 2 and the complete furnace lining layer 1.

[0025] In the preferred technical solution, the thickness of the detachable furnace lining layer 2 is consistent with the thickness of the complete furnace lining layer 1. When the detachable furnace lining layer 2 forms a complete furnace lining, it cooperates with the complete furnace lining layer 1 to form a double-layer combined furnace lining.

[0026] In summary, this embodiment provides a new furnace lining design, which improves on the defects of the traditional complete cast furnace lining and the existing prefabricated furnace lining structure, combines the advantages of the traditional complete cast furnace lining, such as low heat loss and strong stability, while taking into account the prefabricated furnace lining structure. When the furnace lining is partially damaged, the damaged lining can be removed to protect other intact lining parts from continuing to be used, thereby reducing the cost of use.

Claims

1. A furnace lining refractory castable structure, characterized in that: The invention comprises a complete furnace lining layer (1) and a detachable furnace lining layer (2), wherein the number of the detachable furnace lining layers (2) is a plurality, and the plurality of detachable furnace lining layers (2) are fixedly arranged around the inside of the complete furnace lining layer (1), the complete furnace lining layer (1) is penetrated by a plurality of groups of matching holes (5), and the back of the detachable furnace lining layer (2) is fixedly provided with an anchoring screw (3), the anchoring screw (3) passes through the matching hole (5), and the end of the anchoring screw (3) is threadedly connected with a nut (4).

2. A furnace lining refractory castable structure according to claim 1, characterized in that: The middle layer of the complete furnace lining (1) is provided with a heat storage layer A (6) and a steel cage A, and the middle layer of the detachable furnace lining (2) is provided with a heat storage layer B (7) and a steel cage B.

3. A furnace lining refractory castable structure according to claim 1, characterized in that: The removable furnace lining layer (2) has a horizontal cross section in the shape of an arc, and the center of the circle of the removable furnace lining layer (2) is aligned with the center of the circle of the complete furnace lining layer (1).

4. A furnace lining refractory castable structure according to claim 2, characterized in that: The heat storage layer A (6) and the heat storage layer B (7) are both made of refractory clay.

5. A furnace lining refractory castable structure according to claim 1, characterized in that: The number of the removable furnace lining layers (2) is six, the number of the anchoring screws (3) arranged on the back of each of the removable furnace lining layers (2) is four, and the number of each group of matching holes (5) is four.

6. A furnace lining refractory castable structure according to claim 5, characterized in that: The thickness of the removable furnace lining layer (2) is consistent with the thickness of the complete furnace lining layer (1).

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