A composite sealing door structure of an aluminum melting furnace

Abstract

The utility model provides a kind of composite sealing door structure of aluminium melting furnace, connect multiple sealing sub-modules to same outer frame by connecting piece, constitute a complete big furnace door structure, outer frame can be connected in lifting structure in conventional technology, control the opening and closing of whole furnace door;And multiple sealing sub-modules are limited by heat deformation, to improve the sealing life of whole door body.

Description

Technical Field

[0001] This utility model relates to the door structure of an aluminum melting furnace, and in particular to a composite sealing door structure for an aluminum melting furnace. Background Technology

[0002] High-temperature aluminum melting furnaces are common heating equipment in industrial production, and the furnace door is a crucial component, responsible for opening, closing, and sealing the furnace opening to prevent hot gases from leaking into the atmosphere during operation. However, existing furnace doors are of a single, integrated structure, with the inner surface directly facing the furnace chamber and subjected to the high temperatures and even direct heat from the flames, its temperature being isothermal to that of the furnace chamber. When the door is opened, the heated surface rapidly cools due to contact with the atmosphere. Under prolonged conditions of rapid heating and cooling, the furnace door deforms due to thermal stress, a situation particularly severe for large furnace doors. Therefore, improvements to the existing furnace door structure are necessary. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a composite sealing door structure for an aluminum melting furnace, including an outer frame and an inner sealing module. The inner sealing module is composed of multiple independent sealing sub-modules. Each sealing sub-module includes a heat barrier component, an inner frame, and an anchoring component. Each inner frame is connected to the outer frame in parallel through connectors. The heat barrier component is connected to the inner frame through the anchoring component.

[0004] Furthermore, the heat barrier assembly includes a heat-resistant layer filled with fibrous material and a heat-insulating layer, the heat-insulating layer being located between the heat-resistant layer and the inner frame.

[0005] Furthermore, the connector is an L-shaped connecting plate, and both ends of the connecting plate are connected to the inner frame and the outer frame respectively through flanges.

[0006] Furthermore, the inner sealing module is provided with large enclosures on both sides. One end of the large enclosure is bolted to the side of the inner frame, and the other end of the large enclosure extends to the heat barrier component, forming a space for accommodating the heat barrier component.

[0007] Furthermore, positioning blocks are bolted to both sides of the large enclosure, and the positioning blocks have mounting grooves facing the furnace opening, with a first sealing rope embedded in the mounting grooves.

[0008] Furthermore, a pressure block is provided on the side of the positioning block away from the furnace opening, and the pressure block is pressed onto the positioning block by a set screw.

[0009] Furthermore, there is a deformation gap between two adjacent sealing sub-modules, and the deformation gap is filled with a second sealing rope.

[0010] Furthermore, each sealing submodule is provided with small enclosures on both sides, which extend from the inner frame toward the heat source, and adjacent small enclosures form a sealed chamber to accommodate the second sealing rope.

[0011] Furthermore, a pressure plate is provided on the side of the sealed chamber away from the heat source, and one end of the pressure plate is bolted to the outer frame. The technical solution of this utility model is:

[0012] This utility model provides a composite sealing door structure for an aluminum melting furnace, which connects multiple sealing sub-modules to the same outer frame through connectors to form a complete large furnace door structure. The outer frame can be connected to a lifting structure in conventional technology to control the opening and closing of the entire furnace door; while the multiple sealing sub-modules have limited thermal deformation, thereby improving the sealing life of the entire door. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a composite sealing door structure of an aluminum melting furnace connected to the furnace opening according to this utility model;

[0014] Figure 2 This is a top view of a composite sealing door structure for an aluminum melting furnace according to this utility model;

[0015] Figure 3 This is the front view of the composite sealing door structure;

[0016] Figure 4 yes Figure 2 A schematic diagram of the first sealing rope sealing the outer wall of the furnace opening;

[0017] Figure 5 This is a schematic diagram showing the sealing between each sealing sub-module by the second sealing rope.

[0018] Figure 6 This is a left view of the structure installed at the furnace opening.

[0019] Reference numerals: 1. Outer frame; 2. Sealing sub-module; 3. Heat-resistant layer; 4. Insulation layer; 5. Inner frame; 6. Anchor; 7. Connecting plate; 8. Large enclosure plate; 9. Positioning block; 10. First sealing rope; 11. Pressure block; 12. Top screw; 13. Second sealing rope; 14. Small enclosure plate; 15. Pressure plate; 16. Aluminum melting furnace; 17. Furnace opening. Detailed Implementation

[0020] like Figure 1 and Figure 2The diagram shows a composite sealing door structure for an aluminum melting furnace, positioned at the furnace opening 17 of the furnace 16. The composite sealing door structure includes an outer frame 1 and an inner sealing module. The inner sealing module is located outside the furnace opening 17 and is used to seal the furnace opening 17, isolating the furnace chamber of the aluminum melting furnace 16 from the external environment. It consists of multiple independent sealing sub-modules 2. The outer frame 1 serves as the external skeleton of the sealing door, assembling the various sealing sub-modules 2 into a whole, participating in the opening and closing of the furnace door, and ensuring the stability of the position of each sealing sub-module 2.

[0021] Each sealing submodule 2 includes a heat-barrier component, an inner frame 5, and anchors 6. Each inner frame 5 is connected in parallel to the outer frame 1 via connectors, and each heat-barrier component is connected to the inner frame 5 via anchors 6. The heat-barrier component is located inside the sealing submodule 2, directly contacting the furnace chamber, and uses high-temperature resistant materials to block heat conduction and maintain the furnace temperature. The inner frame 5 provides a mounting base for the heat-barrier component and is connected to the outer frame 1 via connectors, forming an independently detachable subunit for easy assembly and maintenance. The anchors 6 are used to fix the heat-barrier component to the inner frame 5, preventing displacement or detachment, and simultaneously distributing the weight and thermal stress of the inner sealing component evenly to the inner frame 5, avoiding excessive local stress that could lead to material fatigue. Figure 6 As shown, the connector is an L-shaped connecting plate 7, and the two ends of the connecting plate 7 are respectively connected to the inner frame 5 and the outer frame 1 through flanges.

[0022] like Figure 2 and Figure 3 As shown, the heat-barrier assembly includes a heat-resistant layer 3 and a heat-insulating layer 4, with the heat-insulating layer 4 located between the heat-resistant layer 3 and the inner frame 5. The heat-resistant layer 3 is filled with a high thermal conductivity material, directly contacting the high-temperature environment of the furnace, blocking high-temperature heat radiation from the furnace, and reducing heat transfer to the outer layer. The heat-insulating layer 4, located between the heat-resistant layer 3 and the inner frame 5, is filled with a low thermal conductivity material, reducing heat conduction to the inner frame 5. The heat-resistant material is connected to the inner frame 5 by anchors 6, such as Y-shaped anchors, spiral anchors, etc. The anchors 6 are evenly arranged along the heat-barrier assembly to ensure tight connections and uniform insulation throughout the assembly.

[0023] like Figure 4As shown, furthermore, the inner sealing module is provided with large enclosure plates 8 on both sides. One end of the large enclosure plate 8 is bolted to the side of the inner frame 5, and the other end of the large enclosure plate 8 extends to the heat barrier component, forming a space for accommodating the heat barrier component. The inner end face of the large enclosure plate 8 is located on the outer side of the outer wall of the furnace opening 17, so that the heat barrier component covers the outside of the furnace opening 17, forming a heat barrier to effectively prevent the hot gas inside the furnace from escaping and maintain the high temperature state inside the furnace. At the same time, the bolted connection between the large enclosure plate 8 and the inner frame 5 can eliminate some thermal expansion stress, and the large enclosure plate 8 will not produce obvious thermal deformation.

[0024] Positioning blocks 9 are bolted to both sides of the large enclosure 8. Each positioning block 9 has a mounting groove facing the furnace opening 17, and a first sealing rope 10 is embedded within the mounting groove. The first sealing rope 10 is compressed between the positioning block 9 and the outer wall of the furnace opening 17 to further prevent hot gas leakage. Simultaneously, the flexible first sealing rope 10 can expand under high-temperature conditions, compensating for a length of approximately 0.15-0.2 mm, thus maintaining a seal on the furnace opening 17.

[0025] Furthermore, a pressure block 11 is provided on the side of the positioning block 9 away from the furnace opening 17. The pressure block 11 is pressed onto the positioning block 9 by a set screw 12. By adjusting the set screw 12, a certain clamping force is applied to the positioning block 9 so that the first sealing rope 10 remains in contact with the outer wall of the furnace opening 17.

[0026] Although some heat is still transferred to the inner frame 5 through the thermal barrier components, the thermal deformation of the inner frame 5 is limited due to the small size of each sealing submodule 2. Further, as... Figure 5 As shown, there is a deformation gap between two adjacent sealing sub-modules 2, and the deformation gap is filled with a second sealing rope 13. Due to the existence of the deformation gap, the adjacent sealing sub-modules 2 are disconnected from each other, avoiding mutual influence of adjacent inner frame 5 due to temperature changes. The second sealing rope 13 can compensate for the adjacent sealing sub-modules 2, further increasing the sealing against heat.

[0027] Furthermore, each sealing submodule 2 is provided with small enclosure plates 14 on both sides. The small enclosure plates 14 extend from the inner frame 5 towards the heat source. Adjacent small enclosure plates 14 form a sealed chamber structure to accommodate the second sealing rope 13, and the second sealing rope 13 is fully filled between the sealed chambers. The length of the sealed chamber is preferably set not to exceed half of the heat barrier component, for example, extending to the position of the heat insulation layer 4. This arrangement ensures that the sealing position of the second sealing rope 13 is far away from the heat source, and the high temperature inside the furnace will not cause damage to the second sealing rope 13.

[0028] Furthermore, a pressure plate 15 is provided on the side of the sealed chamber away from the heat source. One end of the pressure plate 15 is connected to the outer frame 1 by bolts to press the second sealing rope 13 into the sealed chamber and maintain the stable heat insulation capacity of the second sealing rope 13.

[0029] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A composite sealing door structure for an aluminum melting furnace, characterized in that: It includes an outer frame (1) and an inner sealing module. The inner sealing module consists of multiple independent sealing sub-modules (2). Each sealing sub-module (2) includes a heat barrier component, an inner frame (5) and an anchoring component (6). Each inner frame (5) is connected to the outer frame (1) in parallel through connectors. The heat barrier component is connected to the inner frame (5) through the anchoring component (6).

2. The composite sealing door structure of an aluminum melting furnace as described in claim 1, characterized in that: The heat barrier assembly includes a heat-resistant layer (3) filled with fibrous material and a heat insulation layer (4), the heat insulation layer (4) being located between the heat-resistant layer (3) and the inner frame (5).

3. The composite sealing door structure of an aluminum melting furnace as described in claim 2, characterized in that: The connector is an L-shaped connecting plate (7), and the two ends of the connecting plate (7) are respectively connected between the inner frame (5) and the outer frame (1) through flanges.

4. The composite sealing door structure of an aluminum melting furnace as described in claim 2, characterized in that: The inner sealing module has large enclosures (8) on both sides. One end of the large enclosure (8) is bolted to the side of the inner frame (5), and the other end of the large enclosure (8) extends to the heat barrier component to form a space for the heat barrier component.

5. The composite sealing door structure of an aluminum melting furnace as described in claim 4, characterized in that: Positioning blocks (9) are bolted to both sides of the large enclosure (8). The positioning blocks (9) have mounting grooves facing the furnace opening (17), and the mounting grooves are fitted with a first sealing rope (10).

6. The composite sealing door structure of an aluminum melting furnace as described in claim 5, characterized in that: A pressure block (11) is provided on the side of the positioning block (9) away from the furnace opening (17), and the pressure block (11) is pressed onto the positioning block (9) by a set screw (12).

7. The composite sealing door structure of an aluminum melting furnace as described in claim 2, characterized in that: There is a deformation gap between two adjacent sealing sub-modules (2), and the deformation gap is filled with a second sealing rope (13).

8. The composite sealing door structure of an aluminum melting furnace as described in claim 7, characterized in that: Each sealing submodule (2) has small enclosures (14) on both sides, which extend from the inner frame (5) toward the heat source, and adjacent small enclosures (14) form a sealed chamber to accommodate the second sealing rope (13).

9. The composite sealing door structure of an aluminum melting furnace as described in claim 8, characterized in that: A pressure plate (15) is provided on the side of the sealed chamber away from the heat source, and one end of the pressure plate (15) is connected to the outer frame (1) by bolts.

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