Direct-current electric arc furnace cover body structure

Abstract

The utility model provides a direct current electric arc furnace cover body structure, which relates to the technical field of electric arc furnaces, and comprises a base, a blanking mechanism is arranged on the surface of the base, the blanking mechanism comprises a furnace cover and a furnace body, the surface of the base is rotatably connected with a supporting column through a bearing, and a positioning frame is arranged on the surface of the supporting column. The surface of the positioning frame is rotationally connected with a rotating rod through a bearing, a connecting rod is arranged on the surface of the rotating rod, an arc-shaped supporting plate is arranged on the surface of the connecting rod, a supporting frame is arranged on the surface of the positioning frame, a tank body is arranged on the surface of the supporting frame, and a feeding pipeline is arranged on the surface of the tank body. By arranging the discharging mechanism, hot melting slag is put into the tank body, then the tank body is moved, the arc-shaped supporting plate at the bottom is moved away, and the hot melting slag is put into the furnace body, so that the hot melting slag is prevented from being directly put from the furnace cover, heat is prevented from flowing out of the feeding pipeline, and the using effect of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric arc furnace technology, and in particular to a DC electric arc furnace cover structure. Background Technology

[0002] A DC electric arc furnace is an electric arc furnace that uses direct current as its energy source. Like an AC electric arc furnace, it uses the electric arc generated between the electrodes and the furnace charge (or molten pool) to generate heat, thereby achieving the purpose of smelting. It can be used to smelt steel or alloys as well as non-ferrous metals. Generally, an electric arc furnace requires the upper cathode graphite rod to move up and down continuously to ignite the arc. Usually, the motor is controlled to rotate forward and backward by a PLC control cabinet, and the mounting frame with the cathode graphite rod is driven to move up and down through a threaded rod, thereby continuously igniting the arc and smelting the hot slag.

[0003] Chinese patent disclosure relates to a hot molten slag DC electric arc furnace, announcement number: CN217236394U, which includes a DC electric arc furnace body. The right end of the upper lifting frame of the DC electric arc furnace body is fixedly connected to an installation frame. The lower end of the installation frame is connected to a furnace cover through a connecting component. A cathode carbon rod is installed in the middle of the installation frame.

[0004] In the existing technology, hot molten slag is brought into the DC electric arc furnace by rotating the dividing baffle to ensure that the hot air flow inside the furnace will not be discharged through the feed square pipe. However, during heating, the upward movement of the hot air flow can easily drive the dividing baffle to rotate, causing the hot air flow to dissipate outward when the dividing baffle rotates. To address this, we propose a DC electric arc furnace cover structure. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned problems by proposing a DC electric arc furnace cover structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a DC electric arc furnace hood structure, including a base, a feeding mechanism provided on the surface of the base, the feeding mechanism including a furnace cover and a furnace body, a support column rotatably connected to the surface of the base via bearings, a positioning frame provided on the surface of the support column, a rotating rod rotatably connected to the surface of the positioning frame via bearings, a connecting rod provided on the surface of the rotating rod, an arc-shaped support plate provided on the surface of the connecting rod, a support frame provided on the surface of the positioning frame, a tank provided on the surface of the support frame, a feeding pipe provided on the surface of the tank, and a cathode carbon rod slidably connected to the surface of the furnace cover.

[0007] Preferably, the surface of the support column is provided with a sliding groove, a sliding block is slidably connected to the surface of the sliding groove, a connecting frame is provided on the surface of the sliding block, the connecting frame is fixedly connected to the furnace cover, and the sliding block can drive the connecting frame to move when sliding, and drive the furnace cover to move up and down.

[0008] Preferably, the surface of the slide groove is rotatably connected to a threaded rod via a bearing, and the threaded rod is slidably connected to the sliding block. The rotation of the threaded rod can drive the sliding block to move up and down.

[0009] Preferably, the surface of the slide groove is provided with a limiting rod, and the sliding block is slidably connected to the limiting rod. The limiting rod can limit the sliding block and improve the stability of the sliding block when it moves.

[0010] Preferably, a first motor is provided on the surface of the positioning frame, and the output end of the first motor is fixedly connected to the rotating rod, so that the first motor can drive the rotating rod to rotate.

[0011] Preferably, a second motor is provided on the surface of the base, and the output end of the second motor is fixedly connected to the support column. The second motor can drive the support column to rotate.

[0012] Preferably, a third motor is provided on the surface of the support column, and the output end of the third motor is fixedly connected to the threaded rod. The third motor can drive the threaded rod to rotate.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model proposes a DC electric arc furnace cover structure, which uses a feeding mechanism to feed molten slag into the tank, and then moves the position of the tank to remove the arc-shaped support plate at the bottom to feed the molten slag into the furnace body. This avoids feeding molten slag directly from the furnace cover, which would cause heat to flow out from the feeding pipe and improve the performance of the device.

[0015] 2. This utility model proposes a DC electric arc furnace cover structure, which can quickly seal the furnace body by directly embedding the cathode carbon rod from the surface of the furnace cover and moving the position of the furnace cover. Attached Figure Description

[0016] Fig. 1 This utility model provides a front view structural diagram of a DC electric arc furnace cover structure;

[0017] Fig. 2 This utility model provides a partial cross-sectional view of the furnace body structure of a DC electric arc furnace cover.

[0018] Fig. 3 This utility model presents a rear view structural diagram of a DC electric arc furnace cover structure.

[0019] Legend: 1. Base; 2. Feeding mechanism; 201. Furnace cover; 202. Furnace body; 203. Support column; 204. Positioning frame; 205. Rotating rod; 206. Connecting rod; 207. Arc-shaped support plate; 208. Support frame; 209. Tank body; 210. Feeding pipe; 211. Cathode carbon rod; 3. Sliding block; 4. Connecting frame; 5. Threaded rod; 6. Limiting rod; 7. First motor; 8. Second motor; 9. Third motor. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, such as Figs. 1-3 As shown, a DC electric arc furnace hood structure includes a base 1. A feeding mechanism 2 is provided on the surface of the base 1. The feeding mechanism 2 includes a furnace cover 201 and a furnace body 202. A support column 203 is rotatably connected to the surface of the base 1 via a bearing. A positioning frame 204 is provided on the surface of the support column 203. A rotating rod 205 is rotatably connected to the surface of the positioning frame 204 via a bearing. A connecting rod 206 is provided on the surface of the rotating rod 205. An arc-shaped support plate 207 is provided on the surface of the connecting rod 206. A support frame 208 is provided on the surface of the positioning frame 204. A tank 209 is provided on the surface of the support frame 208. A feeding pipe 210 is provided on the surface of the tank 209. A cathode carbon rod 211 is slidably connected to the surface of the furnace cover 201.

[0023] The overall effect of Embodiment 1 is that, through the support column 203, the furnace body 202 can be loaded or sealed by rotating the support column 203. The positioning frame 204 can drive the support frame 208 to rotate, thereby driving the arc-shaped support plate 207 to rotate around the support column 203. The rotating rod 205 passes through the support frame 208. When the rotating rod 205 rotates, the arc-shaped support plate 207 rotates around the rotating rod 205 through the connecting rod 206, so that the tank 209 can be opened and the hot molten slag stored in the tank 209 can be put into the furnace body 202 to complete the loading operation. This avoids the situation where the feed pipe 210 is directly set on the furnace cover 201, which would cause heat to flow out from the feed pipe 210 during heating, thus effectively improving the practicality of the device.

[0024] Example 2, as Figs. 1-3As shown, a groove is provided on the surface of the support column 203, and a sliding block 3 is slidably connected to the surface of the groove. A connecting frame 4 is provided on the surface of the sliding block 3, and the connecting frame 4 is fixedly connected to the furnace cover 201. A threaded rod 5 is rotatably connected to the surface of the groove through a bearing. The threaded rod 5 is slidably connected to the sliding block 3. A limit rod 6 is provided on the surface of the groove, and the sliding block 3 is slidably connected to the limit rod 6. A first motor 7 is provided on the surface of the positioning frame 204, and the output end of the first motor 7 is fixedly connected to the rotating rod 205. A second motor 8 is provided on the surface of the base 1, and the output end of the second motor 8 is fixedly connected to the support column 203. A third motor 9 is provided on the surface of the support column 203, and the output end of the third motor 9 is fixedly connected to the threaded rod 5.

[0025] The overall effect of embodiment 2 is that the sliding block 3 can drive the connecting frame 4 to move when it slides, and drive the furnace cover 201 to move up and down. The rotation of the threaded rod 5 can drive the sliding block 3 to move up and down. The limiting rod 6 can limit the sliding block 3 and improve the stability of the sliding block 3 when it moves. The first motor 7 can drive the rotating rod 205 to rotate. The second motor 8 can drive the support column 203 to rotate. The third motor 9 can drive the threaded rod 5 to rotate.

[0026] The working principle is as follows: Hot molten slag is fed into the tank 209 through the feed pipe 210. The second motor 8 drives the support column 203 to rotate, which in turn drives the positioning frame 204 to rotate. The positioning frame 204 then drives the support frame 208 to rotate, causing the tank 209 to remain above the furnace body 202. The first motor 7 drives the rotating rod 205 to rotate, which in turn drives the connecting rod 206 to rotate. The connecting rod 206 then drives the arc-shaped support plate 207 to rotate, opening the bottom of the tank 209 and allowing the hot molten slag inside to be fed into the furnace body 202. Rotating the support column 203 causes the threaded rod 5 to rotate, which in turn drives the sliding block 3 to rotate. The sliding block 3 then drives the connecting frame 4 to rotate, causing the furnace cover 201 to move. When the cover moves above the furnace body 202, the third motor 9 drives the threaded rod 5 to rotate, causing the sliding block 3 to move downwards. The sliding block 3, through the connecting frame 4, moves the furnace cover 201 downwards, covering the furnace body 202.

[0027] The wiring diagrams of the first motor 7, the second motor 8, and the third motor 9 in this utility model are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the first motor 7, the second motor 8, and the third motor 9 will not be explained in detail.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A DC electric arc furnace shroud structure, comprising a base (1), characterized in that: The base (1) is provided with a feeding mechanism (2), which includes a furnace cover (201) and a furnace body (202). The base (1) is rotatably connected to a support column (203) via a bearing. The support column (203) is provided with a positioning frame (204). The positioning frame (204) is rotatably connected to a rotating rod (205) via a bearing. The rotating rod (205) is provided with a connecting rod (206). The connecting rod (206) is provided with an arc-shaped support plate (207). The positioning frame (204) is provided with a support frame (208). The support frame (208) is provided with a tank (209). The tank (209) is provided with a feeding pipe (210). The furnace cover (201) is slidably connected to a cathode carbon rod (211).

2. The DC electric arc furnace shroud structure according to claim 1, characterized in that: The surface of the support column (203) is provided with a sliding groove, and a sliding block (3) is slidably connected to the surface of the sliding groove. A connecting frame (4) is provided on the surface of the sliding block (3), and the connecting frame (4) is fixedly connected to the furnace cover (201).

3. The DC electric arc furnace shroud structure according to claim 2, characterized in that: The surface of the groove is rotatably connected to a threaded rod (5) via a bearing, and the threaded rod (5) is slidably connected to the sliding block (3).

4. The DC electric arc furnace shroud structure according to claim 3, characterized in that: The surface of the chute is provided with a limiting rod (6), and the sliding block (3) is slidably connected to the limiting rod (6).

5. The DC electric arc furnace shroud structure according to claim 1, characterized in that: The surface of the positioning frame (204) is provided with a first motor (7), and the output end of the first motor (7) is fixedly connected to the rotating rod (205).

6. The DC electric arc furnace shroud structure according to claim 1, characterized in that: The surface of the base (1) is provided with a second motor (8), and the output end of the second motor (8) is fixedly connected to the support column (203).

7. The DC electric arc furnace shroud structure according to claim 3, characterized in that: The surface of the support column (203) is provided with a third motor (9), and the output end of the third motor (9) is fixedly connected to the threaded rod (5).

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