Material leakage prevention structure for furnace shell of submerged arc furnace

Abstract

The invention relates to the technical field of submerged arc furnaces, in particular to a submerged arc furnace shell material leakage prevention structure which comprises a submerged arc furnace body arranged on a mounting table, and a gap is formed between the submerged arc furnace body and the mounting table. An extension plate extending towards the submerged arc furnace body is arranged on the mounting table, the extension plate forms a mounting surface for mounting the material guide plate, and the material guide plate comprises a material guide surface which extends to the inner side of a feeding port of the submerged arc furnace from the extension plate and downwards extends to the lower part of the feeding port. The anti-leakage structure is formed on the upper edge of the submerged arc furnace, so that the matched gap between the submerged arc furnace and the anti-leakage structure can be sealed, and materials are prevented from entering the gap; therefore, the operation of adding materials into the submerged arc furnace is optimized, the situation that an operator spends extra energy on preventing the materials from leaking is avoided, and potential safety hazards are eliminated; and the protection strength on the furnace shell of the submerged arc furnace is further improved, shell deformation caused by accumulation of high-heat materials on the upper edge of the furnace shell and shell damage caused by mistaken collision in the furnace ramming and material pushing process are avoided, and the service life of the submerged arc furnace is effectively prolonged.

Description

Technical Field

[0001] This invention relates to the field of furnace body structure technology for submerged arc furnaces, and specifically to a furnace shell anti-leakage structure for submerged arc furnaces, which can be applied to the furnace shell system of semi-enclosed, rotating furnace shell submerged arc furnaces. Background Technology

[0002] In the smelting process of a semi-enclosed, rotating furnace shell electric arc furnace, if a furnace tamping car is used for tamping and pushing materials, the following problems often exist: 1. The problem of material leakage from the gap between the furnace shell and the structural platform.

[0003] 2. The upper edge of the furnace shell is prone to damage.

[0004] During the tamping process, a small amount of hot material will exit the furnace shell along with the tamping cart, spilling onto the structural platform outside the furnace shell. Simultaneously, the equipment structure is designed to ensure smooth rotation of the furnace shell without jamming, requiring a certain gap between the furnace shell and the structural platform. However, material will fall through this gap onto the lower operating platform, posing a significant safety hazard to workers on the lower platform and resulting in a substantial amount of material cleanup work. Furthermore, with previous designs, the upper edge of the furnace shell is frequently burned or damaged by impacts from the tamping rods, making repair extremely difficult. Once the upper edge of the furnace shell is damaged, the gap between the furnace shell and the structural platform widens, allowing even more material to fall.

[0005] It is evident that the current structure of the electric arc furnace suffers from significant material leakage and substantial damage to the upper edge of the furnace body. The structure above the furnace body should be optimized to prevent leakage and wear. Therefore, a more reasonable technical solution is needed to address the existing technical problems. Summary of the Invention

[0006] The main objective of this invention is to provide a leak-proof structure for the furnace shell of a submerged arc furnace. By setting corresponding blocking and guiding structures above the furnace body structure, material is prevented from falling into the gap between the furnace body and the surrounding building structure, and the wear of material on the upper edge of the furnace body is reduced, thereby improving the actual practical effect of the furnace body.

[0007] To achieve the above objectives, the present invention employs the following leak-proof structure: A leak-proof structure for the shell of a submerged arc furnace includes a submerged arc furnace body mounted on a mounting platform, with a gap between the submerged arc furnace body and the mounting platform; an extension plate extending toward the submerged arc furnace body is provided on the mounting platform, the extension plate forming a mounting surface for mounting a guide plate, the guide plate including a guide surface extending from the extension plate to the inside of the feed port of the submerged arc furnace and extending downward to below the feed port; when material above the submerged arc furnace spills to the outside of the feed port, the extension plate and the guide plate block the material to prevent the material from entering the gap.

[0008] The aforementioned leak-proof structure optimizes and improves the fit structure at the upper feed port of the electric arc furnace, reducing material spillage at the feed port. This ensures a clean gap between the electric arc furnace and the mounting platform, preventing material accumulation that could cause misfitting between the mounting platform and the electric arc furnace, thus guaranteeing the stable and reliable operation of the electric arc furnace.

[0009] Furthermore, the extension plate is set on the mounting platform, forming a certain mounting surface for mounting the guide plate. The structure of the extension plate can be constructed in various forms, and its structure is not limited to one specific type. Here, we optimize and propose one feasible option: the extension plates are arranged in a number and continuously spliced ​​along the circumference of the mounting platform, forming a ring-shaped mounting structure at the mounting platform. When adopting the above scheme, the splicing surface of the extension plates can be a flat splicing surface, or it can be an arc-shaped or bent splicing surface, in order to improve the fit of adjacent extension plates.

[0010] Furthermore, after the extension plates are spliced, they need to be reinforced to ensure the stability and reliability of the splice. Here, an optimization is proposed, and one feasible option is suggested: several anti-collision beams are provided on the extension plates, with each anti-collision beam spanning at least two adjacent extension plates and connecting and fixing them together. In this scheme, the anti-collision beams are positioned above the extension plates, fitting snugly against the upper surface of the extension plates and fixed in place. Multiple anti-collision beams are spaced apart on the circumference to connect all the extension plates and form a stable whole.

[0011] Furthermore, the crash beam can be installed in various ways, and is not limited to a single method. Here, we optimize the design and propose one feasible option: the crash beam is mounted on the extension plate via a connecting seat, and the connecting seat is equipped with fasteners to secure the crash beam and the extension plate. In this solution, the connecting seat has a slot for connecting and fixing the crash beam, and also has several connecting holes. Corresponding connecting holes are also formed on the crash beam and the extension plate. Fasteners are used at these connecting holes for connection and fixation; in some designs, the fasteners are bolts.

[0012] Furthermore, the extension plate is used to mount and fix the guide plate, and a corresponding mating structure is formed on it. Here, optimization is proposed, and one feasible option is suggested: a guide edge is formed on the extension plate, the guide edge including a mating surface that fits against the guide plate, and fasteners are also provided at the mating surface to limit the position of the guide plate. When the above solution is adopted, the guide edge extends downwards from the extension plate, forming an inverted L-shaped structure together with the extension plate, facilitating the fitting and fixing of the guide plate.

[0013] Furthermore, to enhance the stability of the extension plate and prevent it from shifting or tilting under load, an optimization is proposed, and one feasible option is suggested: the extension plate is also provided with support feet, which extend from the lower surface of the extension plate toward the mounting platform and abut against the mounting platform. When adopting the above solution, the support feet include several columnar support rods, or include inclined support plates, which can be connected to the extension plate via fasteners, welding, or even integral molding.

[0014] Furthermore, to better install the extension plate, the structure of the mounting platform is optimized. One feasible option is proposed: the mounting platform is provided with a groove corresponding to the structure of the extension plate and used to place the extension plate. When adopting this scheme, the groove can extend from the inner side to the outer side of the mounting platform, forming a pull groove, which facilitates placing the extension plate within it, allowing the extension plate to extend towards the inner side of the mounting platform and reach the feed port of the electric arc furnace.

[0015] Furthermore, the structure of the guide plate can be constructed in various forms and is not limited to a single one. Here, we optimize and propose one feasible option: the guide plate includes a horizontal plate portion and a vertical plate portion. The horizontal plate portion fits against the mounting surface, and the vertical plate portion extends towards the feed port. The horizontal plate portion and the vertical plate portion form an L-shaped guide surface. With this solution, the horizontal plate portion and the vertical plate portion can be integrally formed, thereby reducing gaps in the connection and preventing material accumulation, thus better ensuring the stability and reliability of the guide plate.

[0016] Furthermore, the overall structure after the horizontal plate and the vertical plate are connected can take various forms and is not limited to one specific one. Here, we optimize and propose one feasible option: the horizontal plate and the vertical plate are integrally formed to form a ring structure; wherein, the horizontal plate forms a circular ring structure, and the vertical plate includes a cylindrical structure; or, the horizontal plate forms a polygonal ring structure, and the vertical plate forms a polygonal cylindrical structure. When adopting the above scheme, the inner diameter of the circular ring structure or the polygonal ring structure formed by the vertical plate is smaller than the diameter of the feed port of the electric arc furnace, and the lower end of the circular ring structure or the polygonal ring structure is lower than the feed port of the electric arc furnace.

[0017] Furthermore, in some embodiments, the mounting platform comprises a concrete slab and a concrete beam structure. When using the above embodiments, the concrete structure can easily improve the stability of the overall structure and withstand extremely high loads.

[0018] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this invention include: By improving the structure of the connection between the upper edge of the electric arc furnace and the mounting platform, a leak-proof structure is formed, which can seal the gap between the two to prevent material from entering the gap. This optimizes the operation of adding materials to the electric arc furnace, saves operators from spending extra effort on preventing material leakage, and eliminates safety hazards. It also further improves the protection of the furnace shell, preventing high-heat materials from accumulating on the upper edge of the furnace shell and causing shell deformation, and preventing accidental collisions during the furnace pushing process that could damage the shell, effectively extending the service life of the electric arc furnace. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure to prevent material leakage.

[0021] Figure 2 for Figure 1 A schematic diagram of the local structure at point A.

[0022] Figure 3 To avoid missing the top view diagram of the structure.

[0023] In the above diagram, the meanings of each label are as follows: 1. Mounting platform; 2. Extension plate; 201. Support leg; 202. Guide edge; 3. Anti-collision beam; 4. Material guide plate; 401. Horizontal plate section; 402. Vertical plate section; 5. Submersible furnace; 6. Connecting seat. Detailed Implementation

[0024] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this embodiment.

[0025] In view of the fact that material leakage occurs during the charging process of the existing electric arc furnace, which causes a heavy workload for operators, damages the structure of the electric arc furnace, and reduces the effective service life of the electric arc furnace, the following embodiments are optimized to overcome the defects of the existing technology.

[0026] Example like Figures 1-3As shown, this embodiment provides a furnace shell anti-leakage structure for a submerged arc furnace 5, including a submerged arc furnace 5 body disposed on a mounting platform 1, with a gap formed between the submerged arc furnace 5 body and the mounting platform 1; the mounting platform 1 is provided with an extension plate 2 extending toward the submerged arc furnace 5 body, the extension plate 2 forming a mounting surface for mounting a guide plate 4, the guide plate 4 including a guide surface extending from the extension plate 2 to the inside of the feed port of the submerged arc furnace 5 and extending downward to below the feed port; when material above the submerged arc furnace 5 spills to the outside of the feed port, the extension plate 2 and the guide plate 4 block the material to prevent the material from entering the gap.

[0027] The anti-leakage structure provided in this embodiment optimizes and improves the fitting structure at the upper feed port of the electric arc furnace 5, reducing the leakage of materials at the feed port of the electric arc furnace 5. This ensures that the gap between the electric arc furnace 5 and the mounting platform 1 is clean, preventing material accumulation from causing fitting errors between the mounting platform 1 and the electric arc furnace 5, thereby ensuring the stable and reliable operation of the electric arc furnace 5.

[0028] The extension plate 2 is set on the mounting platform 1, forming a certain mounting surface for mounting the guide plate 4. The structure of the extension plate 2 can be constructed in various forms, and its structure is not limited to one specific form. This embodiment optimizes and adopts one feasible option: the number of extension plates 2 is several and continuously spliced ​​along the circumference of the mounting platform 1, forming a ring-shaped mounting structure at the mounting platform 1. When adopting the above scheme, the splicing surface of the extension plates 2 can be a flat splicing surface, or it can be an arc-shaped or bent splicing surface, in order to improve the fit of adjacent extension plates 2.

[0029] After the extension plates 2 are spliced, they need to be reinforced to ensure the stability and reliability of the splice. This embodiment optimizes the process and adopts one feasible option: several anti-collision beams 3 are provided on the extension plates 2. Each anti-collision beam 3 spans at least two adjacent extension plates 2 and connects and fixes the adjacent extension plates 2. When the above scheme is adopted, the anti-collision beams 3 are located above the extension plates 2 and are connected and fixed to the upper surface of the extension plates 2. Multiple anti-collision beams 3 are spaced apart on the circumference to connect all the extension plates 2 to form a stable whole.

[0030] The anti-collision beam 3 can be installed in various ways, and is not limited to a single method. This embodiment optimizes and adopts one feasible option: the anti-collision beam 3 is mounted on the extension plate 2 via a connecting seat 6, and the connecting seat 6 is equipped with fasteners for fixing the anti-collision beam 3 and the extension plate 2. In this scheme, the connecting seat 6 has a slot for connecting and fixing the anti-collision beam 3, and several connecting holes are also provided. Corresponding connecting holes are also formed on the anti-collision beam 3 and the extension plate 2. Fasteners are installed at the connecting holes for connection and fixation. In some schemes, the fasteners are bolts.

[0031] The extension plate 2 is used to mount and fix the guide plate 4, and a corresponding mating structure is formed on it. This embodiment optimizes and adopts one feasible option: a guide edge 202 is formed on the extension plate 2, the guide edge 202 includes a mating surface that fits against the guide plate 4, and a fastener is also provided at the mating surface to limit the position of the guide plate 4. When the above solution is adopted, the guide edge 202 extends downwards from the extension plate 2, forming an inverted L-shaped structure together with the extension plate 2, which facilitates the fitting and fixing of the guide plate 4.

[0032] To enhance the stability of the extension plate 2 and prevent it from shifting or tilting under load, this embodiment optimizes the design by employing one feasible option: the extension plate 2 is further provided with a support foot 201, which extends from the lower surface of the extension plate 2 toward the mounting platform 1 and abuts against the mounting platform 1. When using the above solution, the support foot 201 includes several columnar support rods, or includes an inclined support plate. The support rods or support plate can be connected to the extension plate 2 via fasteners, welding, or even integral molding.

[0033] To better install the extension plate 2, the structure of the mounting platform 1 is optimized. This embodiment employs one feasible option: the mounting platform 1 is provided with a groove corresponding to the structure of the extension plate 2 and used to place the extension plate 2. With this solution, the groove extends from the inner side to the outer side of the mounting platform 1, forming a pull groove, which facilitates placing the extension plate 2 within it, allowing the extension plate 2 to extend towards the inner side of the mounting platform 1 and reach the feed port of the electric arc furnace 5.

[0034] The structure of the guide plate 4 can be constructed in various forms and is not limited to a single one. This embodiment optimizes and adopts one feasible option: the guide plate 4 includes a horizontal plate portion 401 and a vertical plate portion 402. The horizontal plate portion 401 fits against the mounting surface, and the vertical plate portion 402 extends toward the feed port. The horizontal plate portion 401 and the vertical plate portion 402 form an L-shaped guide surface. When the above solution is adopted, the horizontal plate portion 401 and the vertical plate portion 402 can be integrally formed, thereby reducing the gaps in the connection and avoiding material accumulation, which can better ensure the stability and reliability of the guide plate 4.

[0035] The overall structure after the horizontal plate portion 401 and the vertical plate portion 402 are connected can take many forms and is not limited to one. This embodiment optimizes and adopts one feasible option: the horizontal plate portion 401 and the vertical plate portion 402 are integrally formed to form a ring structure; wherein, the horizontal plate portion 401 forms a circular ring structure, and the vertical plate portion 402 includes a cylindrical structure; or, the horizontal plate portion 401 forms a polygonal ring structure, and the vertical plate portion 402 forms a polygonal cylindrical structure. When the above scheme is adopted, the inner diameter of the circular ring structure or the polygonal ring structure formed by the vertical plate portion 402 is smaller than the feed port diameter of the electric arc furnace 5, and the lower end of the circular ring structure or the polygonal ring structure is lower than the feed port of the electric arc furnace 5.

[0036] In some designs, the mounting platform 1 comprises a concrete slab and a concrete beam structure. When using these designs, the concrete structure facilitates improved overall structural stability and allows it to withstand extremely high loads.

[0037] The above are the embodiments listed in this example; however, this example is not limited to the optional embodiments described above; those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments; anyone can derive other various forms of embodiments under the guidance of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example; the scope of protection of this example should be determined by the claims.

Claims

1. A furnace shell anti-leakage structure for a submerged arc furnace, characterized in that: The system includes a ferroelectric furnace (5) body mounted on a mounting platform (1), with a gap between the ferroelectric furnace (5) body and the mounting platform (1); the mounting platform (1) is provided with an extension plate (2) extending toward the ferroelectric furnace (5) body, the extension plate (2) forming a mounting surface for mounting a guide plate (4), the guide plate (4) including a guide surface extending from the extension plate (2) to the inside of the feed port of the ferroelectric furnace (5) and extending downward to below the feed port; when the material above the ferroelectric furnace (5) spills to the outside of the feed port, the extension plate (2) and the guide plate (4) block the material to prevent the material from entering the gap.

2. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1, characterized in that: The extension plates (2) are of several kinds and are continuously spliced ​​along the circumference of the mounting platform (1) to form a ring-shaped mounting structure at the mounting platform (1).

3. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1 or 2, characterized in that: The extension plate (2) is provided with several anti-collision beams (3), and the anti-collision beams (3) span at least two adjacent extension plates (2) and connect and fix the adjacent extension plates (2).

4. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 3, characterized in that: The anti-collision beam (3) is mounted on the extension plate (2) via a connecting seat (6), and fasteners are provided on the connecting seat (6) to fix the anti-collision beam (3) and the extension plate (2).

5. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1, characterized in that: The extension plate (2) is formed with a guide edge (202), which includes a mating surface that fits with the guide plate (4). Fasteners are also provided on the mating surface to limit the position of the guide plate (4).

6. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1, characterized in that: The extension plate (2) is also provided with a support foot (201), which extends from the lower surface of the extension plate (2) toward the mounting platform (1) and abuts against the mounting platform (1).

7. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1, characterized in that: The mounting platform (1) is provided with a groove, which corresponds to the structure of the extension plate (2) and is used to place the extension plate (2).

8. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1, characterized in that: The guide plate (4) includes a horizontal plate (401) and a vertical plate (402). The horizontal plate (401) fits against the mounting surface, and the vertical plate (402) extends toward the feed port. The horizontal plate (401) and the vertical plate (402) form an L-shaped guide surface.

9. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 8, characterized in that: The horizontal plate portion (401) and the vertical plate portion (402) are integrally formed to form a ring structure; wherein, the horizontal plate portion (401) forms a circular ring structure, and the vertical plate portion (402) includes a cylindrical structure; or, the horizontal plate portion (401) forms a polygonal ring structure, and the vertical plate portion forms a polygonal cylindrical structure.

10. The furnace shell anti-leakage structure of the submerged arc furnace according to claim 1, characterized in that: The mounting platform (1) includes a concrete slab and a concrete beam structure.

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