A strong sealing of the furnace shell of a submerged arc furnace

Abstract

This utility model relates to the technical field of submerged arc furnace shells, and particularly to a highly airtight submerged arc furnace shell, comprising furnace walls. Connecting flanges are fixed at both the upper and lower ends of the furnace walls, and a first sealing gasket is connected between two of the connecting flanges. Connecting mechanisms are provided on the outer sides of several furnace walls. Multiple furnace walls can be assembled and installed using connecting rods, allowing for the combination of submerged arc furnaces of different heights according to usage requirements. Sealing is achieved through the connecting flanges and the first sealing gasket. Furthermore, an outer shell and sealing sleeve are provided on the outer side of the furnace walls to improve the airtightness and heat insulation of the submerged arc furnace. A support column and connecting frame are provided at the top of the outer shell, and an electric push rod is installed at the top of the connecting frame, driving the cover plate to move up and down, automatically opening and closing the top of the submerged arc furnace to prevent burns and maintain stable opening and closing of the furnace.

Description

Technical Field

[0001] This utility model relates to the technical field of submerged arc furnace shells, and in particular to a submerged arc furnace shell with strong sealing properties. Background Technology

[0002] Submerged arc furnaces, also known as electric arc furnaces or resistance furnaces, are mainly used for the reduction smelting of ores, carbonaceous reducing agents, and solvents. They primarily produce ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, and ferrosilicon-manganese alloys. Submerged arc furnaces are important smelting equipment in the metallurgical industry. They use carbonaceous or magnesia refractory materials as furnace linings and employ self-grown electrodes. The electrodes are inserted into the furnace charge to perform submerged arc operation. The energy of the electric arc and the heat generated by the resistance of the furnace charge when the current passes through it are used to melt the metal. It is an industrial electric furnace that is continuously fed, intermittently slag is discharged, and operates continuously.

[0003] The existing electric arc furnace shells, when in use, operate in a high-temperature environment. The high temperature causes the furnace shell to expand due to heat, resulting in gaps in the furnace wall and insufficient sealing. This is not conducive to maintaining a sealed operating environment inside the electric arc furnace. Moreover, the top of the electric arc furnace is easy to burn when opening and closing, and it cannot be automatically opened and closed by mechanisms such as electric push rods.

[0004] Therefore, we designed a highly airtight furnace shell for electric arc furnaces to meet the needs of practical applications. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a highly airtight furnace shell for a submerged arc furnace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a highly airtight submerged arc furnace shell, including furnace walls, with connecting flanges fixed at the upper and lower ends of the furnace walls, a first sealing gasket connected between two connecting flanges, connecting mechanisms provided on the outer sides of several furnace walls, outer shell mechanisms installed on the outer sides of several furnace walls, and a cover plate installed at the top of the uppermost furnace wall, with an opening and closing mechanism connected to the top of the cover plate. The connecting mechanism includes a connecting rod that passes through a plurality of the connecting flanges; The outer casing mechanism includes an outer casing that wraps around the outside of the furnace wall; The opening and closing mechanism includes an electric push rod, the telescopic end of which is fixedly connected to the top center of the cover plate.

[0007] In detail, a base plate is installed at the bottom of the furnace wall, and first connection holes are opened at the four corners of the base plate. The first sealing gasket bonded to the bottom of the connecting flange abuts against the top of the base plate.

[0008] In detail, the base plate has a rectangular structure and is horizontally arranged, the furnace wall has a circular structure, the edge of the connecting flange has evenly distributed second connecting holes, and the connecting rod slides through the plurality of second connecting holes.

[0009] In detail, the connecting rod is a threaded rod structure and is vertically arranged around the furnace wall. Its bottom end is fixed to the top of the base plate. A nut is connected to the surface of the connecting rod and the side of the connecting flange. The nut securely connects two adjacent connecting flanges.

[0010] In detail, a second sealing gasket is bonded to the bottom end of the outer shell, the second sealing gasket abuts against the top end of the base plate, a sealing sleeve is bonded to the inner surface of the outer shell, the sealing sleeve wraps around the outside of the connecting flange, and the outer shell has a cylindrical structure and is vertically arranged.

[0011] In detail, a connecting plate is evenly fixed to the bottom outer side of the outer shell. A third connecting hole is opened on the surface of the connecting plate. The third connecting hole is located directly above the second connecting hole and a bolt passes through it. The connecting plate is set horizontally.

[0012] In detail, the top of the outer shell is uniformly fixed with support columns, the top of the support columns is fixed with a connecting frame, the connecting frame is a cross-shaped structure and is horizontally arranged, and its surface has guide holes. The electric push rod is fixed in the middle of the top of the connecting frame, and the top of the cover plate is uniformly fixed with guide rods around its circumference. The guide rods slide vertically through the guide holes.

[0013] Core function: To fix connecting rods on the base plate, and to stack different numbers of furnace walls on the base plate to form the furnace shell of the electric arc furnace according to the needs of use; Multiple furnace walls are connected by connecting flanges, and a first sealing gasket is set between two connecting flanges to improve the airtightness of the electric arc furnace. The connecting rod passes through the first connecting holes on the surface of several connecting flanges and is used with nuts to fasten and assemble several furnace walls. An outer shell is installed on the outside of the furnace wall. The sealing sleeve on the inner surface of the outer shell wraps around the outside of the connecting flange. The second sealing gasket at the bottom of the outer shell abuts against the base plate, thereby improving the sealing performance of the electric arc furnace and maintaining its heat preservation. A connecting plate is fixed to the bottom side of the electric arc furnace. The connecting plate is connected to the four corners of the bottom plate with bolts to keep the outer shell detachable and securely installed. A liftable cover is installed at the top of the furnace wall. The top of the electric arc furnace is opened and closed through the cover to load and unload materials. A support column is fixed at the top of the outer shell, and a connecting frame is fixed at the top of the support column. An electric push rod is installed at the top center of the connecting frame, and its bottom end is fixed at the top center of the cover plate. Therefore, the cover plate is moved up and down by the electric push rod, thereby opening and closing the electric arc furnace. The guide rod keeps the cover plate stable when opening and closing, reduces shaking, and improves the sealing performance of the cover plate after it is closed on the top of the electric arc furnace.

[0014] The design scheme proposed in this utility model has the following beneficial effects in application: 1. Multiple furnace walls can be assembled and installed using connecting rods. Different heights of electric arc furnaces can be combined according to usage needs. They are sealed by connecting flanges and first sealing gaskets. In addition, an outer shell and sealing sleeve are set on the outside of the furnace wall to improve the airtightness and heat preservation of the electric arc furnace. 2. By setting support columns and connecting frames at the top of the outer shell, and installing electric push rods at the top of the connecting frames, the cover plate is moved up and down to automatically open and close the top of the electric arc furnace, avoiding burns and maintaining stable opening and closing of the electric arc furnace. Attached Figure Description

[0015] Figure 1 This is an axonometric view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the outer shell and furnace wall structure of this utility model; Figure 3 This is a schematic diagram of the furnace wall and connecting rod structure of this utility model; Figure 4 This is a schematic diagram of the electric push rod and connecting frame of this utility model. Figure 5 This is a schematic diagram of the furnace wall and connecting flange of this utility model.

[0016] In the diagram: 1. Base plate; 2. Second sealing gasket; 3. Connecting plate; 4. Bolt; 5. Outer shell; 6. Cover plate; 7. Support column; 8. Guide rod; 9. Sealing sleeve; 10. Connecting frame; 11. Electric push rod; 12. Connecting rod; 13. First sealing gasket; 14. Connecting flange; 15. Furnace wall; 16. Third connecting hole; 17. First connecting hole; 18. Nut; 19. Guide hole; 20. Second connecting hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figures 1-5A highly airtight submerged arc furnace shell includes a furnace wall 15, with connecting flanges 14 fixed at the upper and lower ends of the furnace wall 15, a first sealing gasket 13 connected between the two connecting flanges 14, connecting mechanisms provided on the outer sides of several furnace walls 15, outer shell mechanisms installed on the outer sides of several furnace walls 15, and a cover plate 6 installed at the top of the uppermost furnace wall 15, with an opening and closing mechanism connected to the top of the cover plate 6. The connecting mechanism includes a connecting rod 12, which passes through several connecting flanges 14; The outer casing mechanism includes an outer casing 5, which is wrapped around the outside of the furnace wall 15; The opening and closing mechanism includes an electric push rod 11, the telescopic end of which is fixedly connected to the top center of the cover plate 6.

[0019] It should be further noted that a base plate 1 is installed at the bottom of the furnace wall 15, and first connection holes 17 are opened at the four corners of the base plate 1. The first sealing gasket 13 bonded to the bottom of the connecting flange 14 abuts against the top of the base plate 1.

[0020] It should be further noted that the base plate 1 is a rectangular structure and is set horizontally, the furnace wall 15 is a circular structure, and the edge of the connecting flange 14 is evenly provided with second connecting holes 20, through which the connecting rod 12 slides.

[0021] It should be further noted that the connecting rod 12 is a threaded rod structure and is vertically arranged around the furnace wall 15. Its bottom end is fixed to the top of the base plate 1. Nuts 18 are connected to the surface of the connecting rod 12 and the side of the connecting flange 14. Nuts 18 are fastened between two adjacent connecting flanges 14.

[0022] It should be further noted that a second sealing gasket 2 is bonded to the bottom of the outer casing 5, and the second sealing gasket 2 abuts against the top of the base plate 1. A sealing sleeve 9 is bonded to the inner surface of the outer casing 5, and the sealing sleeve 9 wraps around the outside of the connecting flange 14. The outer casing 5 has a cylindrical structure and is vertically arranged.

[0023] It should be further noted that a connecting plate 3 is evenly fixed to the bottom outer side of the outer casing 5. A third connecting hole 16 is opened on the surface of the connecting plate 3. The third connecting hole 16 is located directly above the first connecting hole 17 and a bolt 4 passes through it. The connecting plate 3 is set horizontally.

[0024] It should be further explained that support columns 7 are evenly fixed at the top of the outer shell 5, and a connecting frame 10 is fixed at the top of the support columns 7. The connecting frame 10 has a cross-shaped structure and is set horizontally. A guide hole 19 is opened on its surface. An electric push rod 11 is fixed at the middle of the top of the connecting frame 10. A guide rod 8 is evenly fixed in a circle at the top of the cover plate 6. The guide rod 8 slides vertically through the guide hole 19.

[0025] Working method: Connecting rods are fixed on the base plate, and different numbers of furnace walls are stacked on the base plate to form the furnace shell of the electric arc furnace according to the needs of use; Multiple furnace walls are connected by connecting flanges, and a first sealing gasket is set between two connecting flanges to improve the airtightness of the electric arc furnace. The connecting rod passes through the first connecting holes on the surface of several connecting flanges and is used with nuts to fasten and assemble several furnace walls. An outer shell is installed on the outside of the furnace wall. The sealing sleeve on the inner surface of the outer shell wraps around the outside of the connecting flange. The second sealing gasket at the bottom of the outer shell abuts against the base plate, thereby improving the sealing performance of the electric arc furnace and maintaining its heat preservation. A connecting plate is fixed to the bottom side of the electric arc furnace. The connecting plate is connected to the four corners of the bottom plate with bolts to keep the outer shell detachable and securely installed. A liftable cover is installed at the top of the furnace wall. The top of the electric arc furnace is opened and closed through the cover to load and unload materials. A support column is fixed at the top of the outer shell, and a connecting frame is fixed at the top of the support column. An electric push rod is installed at the top center of the connecting frame, and its bottom end is fixed at the top center of the cover plate. Therefore, the cover plate is moved up and down by the electric push rod, thereby opening and closing the electric arc furnace. The guide rod keeps the cover plate stable when opening and closing, reduces shaking, and improves the sealing performance of the cover plate after it is closed on the top of the electric arc furnace. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highly airtight submerged arc furnace shell, comprising a furnace wall (15), characterized in that: The upper and lower ends of the furnace wall (15) are fixed with connecting flanges (14), and a first sealing gasket (13) is connected between the two connecting flanges (14). A connecting mechanism is provided on the outer side of several furnace walls (15), and a shell mechanism is installed on the outer side of several furnace walls (15). A cover plate (6) is installed on the top of the uppermost furnace wall (15), and an opening and closing mechanism is connected to the top of the cover plate (6). The connecting mechanism includes a connecting rod (12) that passes through a plurality of the connecting flanges (14). The outer casing mechanism includes an outer casing (5) that wraps around the outside of the furnace wall (15); The opening and closing mechanism includes an electric push rod (11), the telescopic end of which is fixedly connected to the top center of the cover plate (6).

2. The highly airtight furnace shell of a submerged arc furnace according to claim 1, characterized in that: A base plate (1) is installed at the bottom of the furnace wall (15). A first connection hole (17) is opened at the four corners of the base plate (1). The first sealing gasket (13) bonded to the bottom of the connecting flange (14) abuts against the top of the base plate (1).

3. The highly airtight furnace shell of a submerged arc furnace according to claim 2, characterized in that: The base plate (1) is a rectangular structure and is horizontally arranged. The furnace wall (15) is a circular structure. The edge of the connecting flange (14) is evenly provided with second connecting holes (20). The connecting rod (12) slides through the plurality of second connecting holes (20).

4. The highly airtight furnace shell of a submerged arc furnace according to claim 3, characterized in that: The connecting rod (12) is a threaded rod structure and is vertically arranged around the furnace wall (15). Its bottom end is fixed to the top of the base plate (1). A nut (18) is connected to the surface of the connecting rod (12) and the side of the connecting flange (14). The nut (18) is fastened between two adjacent connecting flanges (14).

5. The highly airtight furnace shell of a submerged arc furnace according to claim 4, characterized in that: The bottom end of the outer shell (5) is bonded with a second sealing gasket (2), which abuts against the top of the base plate (1). The inner surface of the outer shell (5) is bonded with a sealing sleeve (9), which wraps around the outside of the connecting flange (14). The outer shell (5) is a cylindrical structure and is vertically arranged.

6. The highly airtight furnace shell of a submerged arc furnace according to claim 5, characterized in that: A connecting plate (3) is uniformly fixed to the bottom outer side of the outer shell (5). A third connecting hole (16) is opened on the surface of the connecting plate (3). The third connecting hole (16) is located directly above the first connecting hole (17) and a bolt (4) passes through it. The connecting plate (3) is set horizontally.

7. The highly airtight furnace shell of a submerged arc furnace according to claim 1, characterized in that: The top of the outer shell (5) is uniformly fixed with support columns (7), and the top of the support columns (7) is fixed with a connecting frame (10). The connecting frame (10) has a cross-shaped structure and is horizontally arranged. A guide hole (19) is opened on its surface. The electric push rod (11) is fixed in the middle of the top of the connecting frame (10). The top of the cover plate (6) is uniformly fixed with a guide rod (8) in a circular shape. The guide rod (8) slides vertically through the guide hole (19).

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