Electric furnace adopting multi-spray-gun structure

Abstract

The utility model discloses an electric furnace adopting a multi-spray-gun structure, which relates to the technical field of high-temperature metallurgy and comprises a furnace body and a spray gun component. The surface of the furnace body is provided with material injection ports which are uniformly distributed, reinforcing rings are fixed in the material injection ports, a feeding pipe is fixed in the reinforcing rings, a first sealing assembly is installed in the feeding pipe, a rotating assembly is installed at the upper end of the circumferential surface of the feeding pipe, and a cover body assembly is installed at the upper end of the furnace body; the spray gun assembly comprises a spray gun, a conical nut and a conical threaded pipe, the conical threaded pipe is fixed to the end face of the feeding pipe, the conical nut is in threaded connection with the surface of the conical threaded pipe, the spray gun is arranged on the side face of the conical nut, and the conical nut is rotationally connected to the end face of a discharge pipe of the spray gun; and the spray gun can be quickly replaced when damaged, and meanwhile, furnace shutdown can be avoided during replacement.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature metallurgical technology, specifically to an electric furnace with a multi-gun structure. Background Technology

[0002] In high-temperature metallurgical processes, traditional spray lance technology faces problems such as slagging, burn-off, and clogging. Especially in slag splashing furnace protection processes, excessively thick slag buildup on the spray lance can obstruct airflow, requiring frequent cleaning or replacement. The spray lance directly contacts the high-temperature molten material (e.g., the temperature in the spray lance brick area of ​​a side-blown furnace often exceeds 1200℃), causing severe thermal erosion of the refractory material. Combined with material impact and chemical reactions, this results in a short lifespan for the spray lance. Traditional spray lance structural designs are insufficiently adaptable to thermal stress, leading to uneven airflow distribution within the furnace, exacerbating localized high-temperature corrosion, and forcing companies to periodically shut down the furnace for maintenance. Replacing the spray lance requires shutting down the furnace to a safe temperature (usually taking 6-8 hours) and removing high-temperature molten slag, resulting in heat loss and wasted production capacity. The cyclical operation of shutdown-cooling-slag removal-reheating accelerates the spalling of the furnace lining refractory material, creating a vicious cycle of "increasing maintenance costs - shortened shutdown cycles." Manual slag removal poses safety hazards, and emergency repairs disrupt the production schedule. Although the industry has attempted to improve the material of the spray guns or add auxiliary cooling systems, the rigid connection between the traditional spray guns and the furnace body has not fundamentally solved the problems of low maintenance efficiency and energy waste. Therefore, we propose an electric furnace with a multi-spray gun structure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an electric furnace with a multi-spray gun structure that can be quickly replaced when the spray gun is damaged, and at the same time avoids furnace shutdown during replacement, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric furnace with a multi-spray gun structure, comprising a furnace body and a spray gun assembly;

[0005] Furnace body: The surface is provided with evenly distributed injection ports, a reinforcing ring is fixed inside the injection port, a feed pipe is fixed inside the reinforcing ring, a first sealing assembly is installed inside the feed pipe, a rotating assembly is installed at the upper end of the circumferential surface of the feed pipe, and a cover assembly is installed at the upper end of the furnace body;

[0006] The spray gun assembly includes a spray gun, a conical nut, and a conical threaded tube. The conical threaded tube is fixed to the end face of the feed tube, and the conical nut is threaded onto the surface of the conical threaded tube. The spray gun is provided on the side of the conical nut, and the conical nut is rotatably connected to the end face of the spray gun discharge tube. By setting up the spray gun assembly, the materials required for metallurgy are injected into the interior of the furnace.

[0007] Furthermore, the first sealing assembly includes a sealing ball, a guide hole, and a rotating shaft. The sealing ball is disposed inside the feed pipe, and a guide hole is provided in the middle of the sealing ball. A rotating hole is provided at the upper end of the circumferential surface of the feed pipe. A rotating shaft is rotatably connected inside the rotating hole. The rotating shaft is fixed to the upper end of the surface of the sealing ball. The feed pipe is sealed by setting the first sealing assembly.

[0008] Furthermore, the rotating assembly includes a fixed frame, a threaded column, a turntable, a hexagonal disc, and a hexagonal groove. The fixed frame is fixed to the upper end of the circumferential surface of the feed pipe. A threaded hole is opened on the upper side of the fixed frame. A threaded column is threadedly connected inside the threaded hole. A hexagonal disc is fixed to the lower end of the threaded column. A hexagonal groove is opened at the upper end of the rotating shaft. The hexagonal disc is slidably connected inside the hexagonal groove. A turntable is fixed to the upper end of the threaded column. The rotating assembly drives the sealing ball to rotate.

[0009] Furthermore, the cover assembly includes a furnace cover and electrodes, with the furnace cover installed at the upper end of the furnace body, and multiple electrodes are disposed through and sealed on the furnace cover.

[0010] Furthermore, a support ring is fixed to the lower end of the furnace body, and evenly distributed support legs are fixed to the lower end of the support ring. The furnace body is supported by the support ring and support legs.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This furnace body, which adopts multi-spray gun technology, has the following advantages:

[0012] This invention allows for quick removal of the spray gun by rotating the tapered nut connected to the discharge pipe of the spray gun to be disassembled, thus separating it from the tapered threaded pipe. This method ensures easy removal while avoiding furnace shutdowns, thereby effectively improving replacement efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first sealing component of this utility model;

[0015] Figure 3 This is a schematic diagram of the hexagonal disk structure of this utility model;

[0016] Figure 4 This is a structural diagram of Embodiment 2 of the present invention.

[0017] In the diagram: 1 Furnace body, 2 Reinforcing ring, 3 Feed pipe, 4 Spray gun assembly, 41 Spray gun, 42 Conical nut, 43 Conical threaded pipe, 5 First sealing assembly, 51 Sealing ball, 52 Guide hole, 53 Rotating shaft, 6 Rotating assembly, 61 Fixing frame, 62 Threaded column, 63 Turntable, 64 Hexagonal disc, 65 Hexagonal groove, 7 Cover assembly, 71 Furnace cover, 72 Electrode, 8 Support ring, 9 Support leg. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0019] Please see Figure 1-3 This embodiment provides a technical solution: an electric furnace with a multi-spray gun structure, including a furnace body 1 and a spray gun assembly 4;

[0020] Furnace body 1: The surface has evenly distributed injection ports. A reinforcing ring 2 is fixed inside each injection port. A feed pipe 3 is fixed inside the reinforcing ring 2. A first sealing assembly 5 is installed inside the feed pipe 3. A rotating assembly 6 is installed at the upper end of the circumference of the feed pipe 3. A cover assembly 7 is installed at the upper end of the furnace body 1. The first sealing assembly 5 includes a sealing ball 51, a guide hole 52, and a rotating shaft 53. The sealing ball 51 is located inside the feed pipe 3. A guide hole 52 is located in the middle of the sealing ball 51. A rotating hole is located at the upper end of the circumference of the feed pipe 3. A rotating shaft 53 is rotatably connected inside the rotating hole and fixed to the upper end of the surface of the sealing ball 51. The rotating assembly 6 includes a fixed frame 61, a threaded column 62, a turntable 63, a hexagonal disc 64, and a hexagonal groove 65. The fixed frame 61 is fixed at the upper end of the circumferential surface of the feed pipe 3. A threaded hole is opened on the upper side of the fixed frame 61. The threaded column 62 is threadedly connected inside the threaded hole. The hexagonal disc 64 is fixed at the lower end of the threaded column 62. The hexagonal groove 65 is opened at the upper end of the rotating shaft 53. The hexagonal disc 64 is slidably connected inside the hexagonal groove 65. The turntable 63 is fixed at the upper end of the threaded column 62. The cover assembly 7 includes a furnace cover 71 and electrodes 72. The furnace cover 71 is installed at the upper end of the furnace body 1. Multiple electrodes 72 are sealed through the furnace cover 71.

[0021] The spray gun assembly 4 includes a spray gun 41, a conical nut 42, and a conical threaded tube 43. The conical threaded tube 43 is fixed on the end face of the feed pipe 3. The conical nut 42 is threadedly connected to the surface of the conical threaded tube 43. The spray gun 41 is provided on the side of the conical nut 42. The conical nut 42 is rotatably connected to the end face of the discharge pipe of the spray gun 41. By setting the spray gun assembly 4, the materials required for metallurgy are injected into the interior of the furnace body 1.

[0022] Wherein: a support ring 8 is fixed at the lower end of the furnace body 1, and evenly distributed support legs 9 are fixed at the lower end of the support ring 8, so that the furnace body 1 is supported by the support ring 8 and the support legs 9.

[0023] The working principle of the electric furnace with a multi-spray gun structure provided by this utility model is as follows: When it is necessary to replace the spray gun 41, rotate the turntable 63 corresponding to the position of the spray gun 41 to be removed, so that the hexagonal disk 64 connected to the turntable 63 moves downward and rotates at the same time. The rotation of the hexagonal disk 64 drives the sealing ball 51 to rotate. When the hexagonal disk 64 moves downward to the bottom of the hexagonal groove 65, the sealing ball 51 will seal the feed pipe 3. After sealing, rotate the conical nut 42 connected to the discharge pipe of the spray gun 41 to be removed to separate it from the conical threaded pipe 43, so that the spray gun 41 can be quickly removed. In this way, it can be removed, and the furnace shutdown is avoided in the whole process, thereby effectively improving the replacement efficiency. Example 2

[0024] Please see Figure 4 This embodiment provides a technical solution: based on embodiment 1, the furnace body is set to be horizontal, and the support legs 9 are set on both sides of the bottom of the horizontal furnace body, the electrode 71 is set on the top of the furnace body, and multiple spray gun assemblies 4 are arranged horizontally on the front and rear sides of the furnace body.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electric furnace employing a multi-spray gun structure, characterized in that: Includes furnace body (1) and spray gun assembly (4); Furnace body (1): The surface is provided with uniformly distributed injection ports. A reinforcing ring (2) is fixed inside the injection port. A feed pipe (3) is fixed inside the reinforcing ring (2). A first sealing component (5) is installed inside the feed pipe (3). A rotating component (6) is installed at the upper end of the circumferential surface of the feed pipe (3). A cover component (7) is installed at the upper end of the furnace body (1). The spray gun assembly (4) includes a spray gun (41), a conical nut (42) and a conical threaded tube (43). The conical threaded tube (43) is fixed on the end face of the feed tube (3). The conical nut (42) is threaded onto the surface of the conical threaded tube (43). The spray gun (41) is provided on the side of the conical nut (42). The conical nut (42) is rotatably connected to the end face of the discharge tube of the spray gun (41).

2. The electric furnace with a multi-lance structure according to claim 1, characterized in that: The first sealing assembly (5) includes a sealing ball (51), a guide hole (52) and a rotating shaft (53). The inside of the feed pipe (3) is provided with a sealing ball (51). A guide hole (52) is provided in the middle of the sealing ball (51). A rotating hole is provided at the upper end of the circumferential surface of the feed pipe (3). A rotating shaft (53) is rotatably connected inside the rotating hole. The rotating shaft (53) is fixed to the upper end of the surface of the sealing ball (51).

3. An electric furnace employing a multi-gun structure according to claim 2, characterized in that: The rotating assembly (6) includes a fixed frame (61), a threaded column (62), a turntable (63), a hexagonal disc (64), and a hexagonal groove (65). The upper end of the circumferential surface of the feed pipe (3) is fixed with the fixed frame (61). A threaded hole is opened on the upper side of the fixed frame (61). The threaded column (62) is threadedly connected inside the threaded hole. The lower end of the threaded column (62) is fixed with the hexagonal disc (64). The upper end of the rotating shaft (53) is opened with the hexagonal groove (65). The hexagonal disc (64) is slidably connected inside the hexagonal groove (65). The upper end of the threaded column (62) is fixed with the turntable (63).

4. An electric furnace employing a multi-gun structure according to claim 1, characterized in that: The cover assembly (7) includes a furnace cover (71) and electrodes (72). The furnace cover (71) is installed on the upper end of the furnace body (1), and multiple electrodes (72) are disposed through and sealed on the furnace cover (71).

5. An electric furnace employing a multi-gun structure according to claim 1, characterized in that: The lower end of the furnace body (1) is fixed with a support ring (8), and the lower end of the support ring (8) is fixed with evenly distributed support legs (9).

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