Furnace door assembly of electric arc furnace

Abstract

The utility model discloses an electric arc furnace door assembly which comprises a furnace door hinged to a furnace opening, a hinge shaft hinged to the furnace door is located at the top of the furnace door, and the hinge shaft and the furnace door are fixed into a whole. The furnace door further comprises a driving assembly, the driving assembly comprises a rack driven to ascend or descend and a gear fixed to the hinged shaft, and the gear is meshed with the rack so that the furnace door can be driven to be opened upwards or closed downwards around the central axis of the hinged shaft through vertical operation of the rack; and even if slag is piled at the furnace door opening, the opened and closed furnace door can cover the slag to close the furnace door channel so as to prevent external air from entering the furnace to damage the smelting atmosphere in the furnace.

Description

Technical Field

[0001] This utility model relates to the field of metallurgy, specifically to an electric arc furnace door assembly. Background Technology

[0002] In the metallurgical industry, the electric arc furnace door serves to isolate the furnace from external cold air, prevent heat loss, and prevent slag from flowing out, while maintaining a good smelting atmosphere. Modern electric arc furnace smelting typically uses closed-door operation, but traditional furnace doors usually employ a vertical lifting and lowering mechanism. When slag overflows or splashes onto the door's sliding track and cools to form solid slag, it often causes blockage, preventing the door from closing. This necessitates manual cleaning of the slag from the track, increasing the workload for operators.

[0003] Therefore, to solve the above problems, an electric arc furnace door assembly is needed that can effectively avoid the occurrence of the above problems. Even if slag accumulates at the furnace door, the furnace door can be closed by covering the slag to prevent external air from entering and damaging the smelting atmosphere inside the furnace. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide an electric arc furnace door assembly that can effectively avoid the above problems. Even if slag accumulates at the furnace door, the openable furnace door can cover the slag to close the furnace door passage and prevent external air from entering and damaging the smelting atmosphere inside the furnace.

[0005] The electric arc furnace door assembly of this utility model includes a furnace door hinged to the furnace opening, wherein the hinge axis of the furnace door is located at the top of the furnace door, and the hinge axis is fixed to the furnace door to form an integral whole.

[0006] It also includes a drive assembly comprising a rack that is driven to rise or fall and a gear fixed on a hinge shaft, the gear and rack meshing such that the up-and-down movement of the rack drives the furnace door to open upward or close downward about the central axis of the hinge shaft.

[0007] Furthermore, it also includes a clamping assembly, which includes a base disposed on the furnace body and a guide wheel disposed on the base. The guide wheel is in contact with the back of the rack. The guide wheel is disposed on the base via a central axis. The guide wheel is driven to rotate around the central axis. The central axis is adjusted to bring the guide wheel closer to or away from the back of the rack.

[0008] Furthermore, the drive assembly includes a power source for driving the rack to move up and down. The power source includes a lifting cylinder. The cylinder body of the lifting cylinder is fixed in a set position, and the piston rod of the lifting cylinder limits the rack so that the rack is driven to move up and down by the lifting cylinder.

[0009] Furthermore, the gear in the drive assembly is correspondingly disposed at one axial end of the hinge shaft.

[0010] Furthermore, the root of the rack is connected to the top of the piston rod via a universal joint.

[0011] Furthermore, the guide wheel has a groove that limits the back of the rack.

[0012] The beneficial effects of this utility model are as follows: The electric arc furnace door assembly disclosed in this utility model allows the furnace door to rotate around an axis for opening and closing, avoiding the problems associated with traditional vertical lifting furnace doors. These problems arise when slag overflows or splashes onto the sliding track and cools to form solid slag, causing blockage and preventing the door from closing. This necessitates manual cleaning of the slag from the track, increasing the workload for operators. This type of door effectively avoids these problems. Even if slag accumulates at the furnace door, the opening and closing door can cover the slag, closing the door passage and preventing external air from entering and disrupting the smelting atmosphere inside the furnace. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the lifting cylinder of this utility model;

[0017] Figure 4 This is a schematic diagram of the rack structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the main structure of the guide wheel of this utility model;

[0019] Figure 6 This is a side view of the guide wheel of this utility model. Detailed Implementation

[0020] Figure 1 The figure shows a schematic diagram of the structure of the present invention. In this embodiment, the electric arc furnace door assembly includes a furnace door 1 hinged to the furnace opening. The hinge shaft 2 that hinges the furnace door 1 is located at the top of the furnace door 1, and the hinge shaft 2 is fixed to the furnace door 1 to form an integral whole. A mounting plate for assembling the hinge shaft 2 is provided at the position of the furnace door 1.

[0021] It also includes a drive assembly, which comprises a rack 3 driven to rise or fall and a gear 4 fixed on a hinge shaft 2. The gear 4 in the drive assembly is correspondingly fixed to one axial end of the hinge shaft 2. The gear 4 meshes with the rack 3 so that the up-and-down movement of the rack 3 drives the furnace door 1 to open upward or close downward around the central axis 8 of the hinge shaft 2. The drive assembly includes a power source that drives the rack 3 to move up and down. The power source includes a lifting cylinder 5. The cylinder body of the lifting cylinder 5 is fixed in a set position, and the piston rod of the lifting cylinder 5 limits the rack 3 so that the rack 3 is driven by the lifting cylinder 5. The vertical displacement; the lifting cylinder 5 is any hydraulic cylinder in the prior art, preferably to achieve the intended function of lifting the rack 3, which will not be elaborated here; in this solution, the root of the rack 3 is connected to the top of the piston rod through a universal joint, so that the rack 3 has a certain degree of freedom, can adapt to the normal rotation of the gear 4, avoid the occurrence of the gear 4 jamming, and improve the reliability of operation. More specifically, the bottom of the rack 3 is fixed to the rotating ball of the universal joint, and the top of the piston rod is fixed to the housing of the universal joint. The universal joint is preferably any one of the prior art to achieve the intended function of this solution, which will not be elaborated here.

[0022] In this embodiment, a clamping assembly is also included. The clamping assembly includes a base 6 mounted on the furnace body and a guide wheel 7 mounted on the base 6. The guide wheel 7 is in contact with the back of the rack 3. The guide wheel 7 is mounted on the base 6 via a central shaft 8. The guide wheel 7 is driven to rotate around the central shaft 8. The central shaft 8 is adjusted to bring the guide wheel 7 closer to or further away from the back of the rack 3. The guide wheel 7 has a groove 9 that limits the back of the rack 3. The clamping assembly allows the rack 3 to continuously clamp the gear 4, improving the smoothness of the mechanism's operation, ensuring transmission reliability, and allowing dynamic adjustment of the rack 3's angle according to usage. Furthermore, the guide wheel 7 has a groove 9 for guiding the rack 3, further enhancing the reliability and stability of the structure. The central shaft 8 is adjusted by screwing a stud 10 into or out of the base 6, ensuring a reliable and stable structure that is easy to adjust.

[0023] In this design, the furnace door 1 can rotate around an axis to open or close, avoiding the problems associated with traditional vertical lifting furnace doors 1. These problems arise when slag overflows or splashes onto the sliding track of the furnace door 1 and cools to form solid slag, causing blockage and preventing the door from closing. This necessitates manual cleaning of the slag from the track, increasing the workload for operators. This new type of furnace door 1 effectively avoids these issues. Even if slag accumulates at the furnace door opening, the opening and closing mechanism can cover the slag to close the door passage, preventing external air from entering and disrupting the smelting atmosphere inside the furnace.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electric arc furnace door assembly, characterized in that: Includes a furnace door hinged to the furnace opening, wherein the hinge axis of the furnace door is located at the top of the furnace door, and the hinge axis is fixed to the furnace door to form an integral whole; It also includes a drive assembly comprising a rack that is driven to rise or fall and a gear fixed on a hinge shaft, the gear and rack meshing such that the up-and-down movement of the rack drives the furnace door to open upward or close downward about the central axis of the hinge shaft.

2. The electric arc furnace door assembly according to claim 1, characterized in that: It also includes a clamping assembly, which includes a base disposed on the furnace body and a guide wheel disposed on the base. The guide wheel is in contact with the back of the rack. The guide wheel is disposed on the base via a central axis. The guide wheel is driven to rotate around the central axis. The central axis is adjusted to bring the guide wheel closer to or away from the back of the rack.

3. The electric arc furnace door assembly according to claim 2, characterized in that: The drive assembly includes a power source that drives the rack to move up and down. The power source includes a lifting cylinder. The cylinder body of the lifting cylinder is fixed in a set position. The piston rod of the lifting cylinder limits the rack so that the rack is driven to move up and down by the lifting cylinder.

4. The electric arc furnace door assembly according to claim 3, characterized in that: The gear in the drive assembly is correspondingly located at one axial end of the hinge shaft.

5. The electric arc furnace door assembly according to claim 3, characterized in that: The root of the rack is connected to the top of the piston rod via a universal joint.

6. The electric arc furnace door assembly according to claim 2, characterized in that: The guide wheel has a groove that limits the back of the rack.

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