Closed fixed electrode core circle boron carbide smelting electric arc furnace

Abstract

The utility model discloses a closed fixed pole core circle boron carbide smelting electric arc furnace belongs to carbide smelting equipment technical field, the electric arc furnace includes electric arc furnace body and the batching mechanism of fixed in its top, the batching mechanism includes the hopper by the partition of partition, and the first feeding box and the second feeding box of hopper bottom intercommunication, and the first feeding fan and the second feeding fan of rotating connection with by independent motor drive are respectively in, and are communicated with electric arc furnace body through the feeding pipe respectively, and the electric arc furnace still includes the clamping mechanism of by cylinder drive, through the linkage mechanism and drive the movement of symmetrical clamping block, the utility model discloses through setting the batching mechanism of double -channel independent feeding, solved the problem of raw material proportioning inaccuracy, and the problem of unstable feeding, can realize accurate, adjustable proportion supply to different materials, and through symmetrical clamping mechanism guarantees the stable clamping of electrode simultaneously, and the stability of smelting reaction and product quality are promoted together.

Description

Technical Field

[0001] This utility model relates to the technical field of carbide smelting equipment, and in particular to a closed-type fixed-center-circle boron carbide smelting electric arc furnace. Background Technology

[0002] Electric arc furnaces, as industrial equipment capable of generating extremely high temperatures, are widely used in the preparation of high-temperature materials, especially playing a core role in the smelting process for producing ultra-hard, high-temperature resistant materials such as boron carbide. The synthesis of boron carbide is a chemical process with extremely demanding reaction conditions, and the purity, crystal form, and properties of its final product largely depend on the precision of the raw material ratios.

[0003] In the smelting of boron carbide, the boron source material and the carbon source material need to be mixed and reacted according to a strict stoichiometric ratio. However, some existing electric arc furnaces have structural defects in the material supply process. Some equipment uses a method of pre-mixing multiple raw materials and then feeding them into the furnace through a single channel. However, due to the differences in density, particle size, and flowability of different raw materials, stratification or segregation is very likely to occur during transportation and feeding. This causes the actual material ratio entering the reaction zone to deviate from the preset value, making it impossible to guarantee the uniformity and integrity of the reaction.

[0004] Uncontrolled and fluctuating material ratios can directly lead to incomplete smelting reactions, easily forming localized carbon- or boron-rich areas within the furnace. The final product will contain a significant amount of free carbon or unreacted boride impurities. This not only severely affects the purity and quality grade of boron carbide products and reduces the yield, but also creates considerable difficulties and increases costs for subsequent purification processes, thus hindering the production efficiency of high-quality boron carbide.

[0005] Therefore, this utility model proposes a closed-type fixed-center-circle boron carbide smelting electric arc furnace to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a closed-type fixed-center boron carbide smelting electric arc furnace, aiming to improve the problems of the material supply structure of the closed-type fixed-center boron carbide smelting electric arc furnace being unable to guarantee the accuracy of the raw material and auxiliary material ratio and the unstable feeding process, thus affecting the quality of the final product. This utility model aims to provide a closed-type fixed-center boron carbide smelting electric arc furnace with an improved structure that can effectively solve the above problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a closed-type fixed-center boron carbide smelting electric arc furnace, comprising: an electric arc furnace body; and a feeding mechanism fixedly connected to the top of the electric arc furnace body.

[0008] The feeding mechanism has a structure that enables independent feeding through two channels. The feeding mechanism includes a hopper, the interior of which is divided into at least two chambers by a partition.

[0009] The bottom of the hopper is connected to a first feeding box and a second feeding box via a first connecting block; a first feeding fan is rotatably connected inside the first feeding box, and the first feeding fan is fixedly connected to a first motor fixed on the top of the electric arc furnace body. At the same time, the first feeding box communicates with the interior of the electric arc furnace body through a first feeding pipe; a second feeding fan is rotatably connected inside the second feeding box, and the second feeding fan is fixedly connected to a second motor fixed on the top of the electric arc furnace body. At the same time, the second feeding box communicates with the interior of the electric arc furnace body through a second feeding pipe.

[0010] Preferably, the enclosed fixed-center circular boron carbide smelting electric arc furnace further includes a clamping mechanism, which is fixedly connected to the outside of the electric arc furnace body. The clamping mechanism includes a mounting plate, and a cylinder is installed inside the mounting plate. The output end of the cylinder is fixedly connected to a connecting rod. One end of the connecting rod is rotatably connected to a rotating rod, and the other end of the rotating rod drives the clamping block through a fixed block, a connecting column, and a second connecting block.

[0011] Preferably, the clamping mechanism includes a pair of symmetrically arranged rotating rods, a fixed block, a connecting column, a second connecting block, and clamping blocks, wherein the pair of clamping blocks move toward each other under the drive of the connecting rods.

[0012] Preferably, the bottom of the electric arc furnace body is fixedly connected with a support foot to provide stable support for the entire equipment.

[0013] Preferably, the bottom of the electric arc furnace body is provided with a discharge pipe for discharging finished materials after smelting.

[0014] Preferably, a furnace door is provided on the side wall of the electric arc furnace body for internal observation and maintenance of the equipment.

[0015] Preferably, as a specific implementation, a handle is fixedly connected to the furnace door to facilitate opening and closing the furnace door.

[0016] Preferably, the connecting rod slides along its length under the drive of the cylinder and drives the rotating rod to rotate around its central pivot, thereby achieving precise force transmission.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting a hopper with partitions and cooperating with a feeding mechanism consisting of a dual-channel feeding fan and a feeding pipe driven by an independent motor, the problems of uneven mixing of raw materials and auxiliary materials, difficulty in accurately controlling the proportion and unstable feeding rate in the prior art are solved. The technical effect of independent, accurate and continuous adjustable feeding of different materials is achieved, thereby significantly improving the stability of the smelting reaction and the quality and uniformity of the final product.

[0018] 2. This utility model solves the problems of insecure electrode clamping, easy shaking leading to unstable electric arc, and uneven thermal field in the prior art by setting a clamping mechanism driven by a cylinder and linked by a connecting rod and a symmetrical rotating rod. It achieves the technical effect of applying a balanced, strong and stable clamping force to the central electrode, ensuring the continuous stability of the electric arc and the uniform distribution of the thermal field in the furnace, and improving energy utilization efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of a closed-type fixed-polarity boron carbide smelting electric arc furnace proposed in this utility model. Figure 2 This is a side view of the slide rail of a closed-type fixed-center-circle boron carbide smelting electric arc furnace proposed in this utility model. Figure 3 This is a bottom view of the slide rail of a closed-type fixed-center-circle boron carbide smelting electric arc furnace proposed in this utility model; Figure 4 A schematic diagram of the clamping block for a closed-type fixed-center-circle boron carbide smelting electric arc furnace proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the hopper of a closed-type fixed-center-circle boron carbide smelting electric arc furnace proposed in this utility model.

[0020] Legend: 1. Electric arc furnace body; 2. Batching mechanism; 201. Hopper; 202. Baffle plate; 203. First connecting block; 204. First feeding box; 205. First feeding fan; 206. First motor; 207. Second feeding box; 208. Second feeding fan; 209. Second motor; 210. First feeding pipe; 211. Second feeding pipe; 3. Clamping mechanism; 301. Mounting plate; 302. Cylinder; 303. Connecting rod; 304. Rotating rod; 305. Fixing block; 306. Connecting column; 307. Second connecting block; 308. Clamping block; 4. Support leg; 5. Discharge pipe; 6. Furnace door; 7. Handle. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1 to 6 This utility model provides a closed-type fixed-center boron carbide smelting electric arc furnace, which aims to solve the problems of inaccurate control of the ratio of raw materials and auxiliary materials and unstable feeding rate leading to uneven smelting reaction in the prior art.

[0023] like Figure 1 and Figure 2 As shown, the enclosed fixed-center boron carbide smelting electric arc furnace includes an electric arc furnace body 1 and a batching mechanism 2 fixedly connected to the top of the electric arc furnace body 1. The electric arc furnace body 1 serves as the reaction chamber and installation platform of the entire device, while the batching mechanism 2 is used to achieve precise proportioning and supply of raw materials and auxiliary materials.

[0024] Specifically, the feeding mechanism 2 includes a hopper 201. The interior of the hopper 201 is divided into at least two independent chambers by a partition 202 for holding different materials respectively. The bottom of the hopper 201 is connected to a first feeding box 204 and a second feeding box 207. The first feeding box 204 and the second feeding box 207 are connected by a first connecting block 203, forming the structural basis of dual-channel independent feeding.

[0025] In the first feeding channel, the first feeding box 204 is rotatably connected to the inside of the first feeding fan 205. The side wall of the first feeding fan 205 is fixedly connected to the output end of the first motor 206 fixed to the top of the electric arc furnace body 1. The lower part of the first feeding box 204 is connected to the inside of the electric arc furnace body 1 through the first feeding pipe 210. When the first motor 206 is working, the first motor 206 drives the first feeding fan 205 to rotate in the first feeding box 204, thereby feeding the material in one chamber of the hopper 201 into the electric arc furnace body 1 through the first feeding pipe 210.

[0026] In the second feeding channel, the second feeding box 207 is rotatably connected to the inside of the second feeding fan 208. The side wall of the second feeding fan 208 is fixedly connected to the output end of the second motor 209, which is also fixed to the top of the electric arc furnace body 1. The lower part of the second feeding box 207 is connected to the inside of the electric arc furnace body 1 through the second feeding pipe 211. When the second motor 209 is working, the second motor 209 drives the second feeding fan 208 to rotate in the second feeding box 207, thereby feeding the material in another chamber of the hopper 201 into the electric arc furnace body 1 through the second feeding pipe 211.

[0027] The clamping mechanism 3 is fixedly installed on the outer side wall of the electric arc furnace body 1. The clamping mechanism 3 has a mounting plate 301. A cylinder 302, which serves as a power source, is installed inside the mounting plate 301. The output end of the cylinder 302 is fixedly connected to the connecting rod 303. The function of the clamping mechanism 3 is to provide a stable and reliable clamping force for the center electrode.

[0028] Specifically, the clamping mechanism 3 includes a pair of symmetrically arranged transmission components. Each transmission component consists of a rotating rod 304, a fixed block 305, a connecting column 306, a second connecting block 307, and a clamping block 308. The connecting rod 303 is rotatably connected to one end of the two symmetrically arranged rotating rods 304. When the cylinder 302 is working, the cylinder 302 drives the connecting rod 303 to slide along its length, thereby driving the two rotating rods 304 to rotate synchronously around the pivot in the middle.

[0029] A fixing block 305 is fixedly connected to the side wall of the other end of the rotating rod 304. A connecting column 306 is fixedly connected inside the fixing block 305. The connecting column 306 drives the clamping block 308 through the second connecting block 307. This linkage structure converts the rotation of the rotating rod 304 into the opposite linear motion of the clamping blocks 308. In the assembled state, the inner surfaces of the two clamping blocks 308 are arc surfaces that fit the shape of the electrode. This pneumatic-lever linkage symmetrical clamping structure ensures that the two clamping blocks 308 can apply uniform clamping force synchronously, thereby achieving a high stability and anti-deflection clamping effect for the electrode.

[0030] The bottom of the electric arc furnace body 1 is fixedly connected to a support leg 4. The support leg 4 serves as a load-bearing component of the equipment, providing stable support during operation. A discharge pipe 5 is installed at the bottom of the electric arc furnace body 1, used for discharging the finished product after smelting. A furnace door 6 is opened on the side wall of the electric arc furnace body 1, providing a passage for inspection and maintenance inside the equipment. A handle 7 is fixedly connected to the outer wall of the furnace door 6, facilitating opening and closing by operators. In the specific implementation of the clamping mechanism 3, in order to achieve uniform and strong clamping of the electrodes, the clamping... The linkage structure of the holding mechanism 3 adopts a symmetrical design. The connecting rod 303 slides linearly along its length under the drive of the cylinder 302, thereby pushing two symmetrically arranged rotating rods 304. Each rotating rod 304 rotates synchronously around its central pivot. The rotation of the rotating rod 304 is transmitted through the fixed block 305, the connecting column 306, and the second connecting block 307, ultimately driving a pair of clamping blocks 308 to move synchronously towards each other, ensuring that a balanced clamping force is applied to the electrode. This symmetrical linkage ensures that the electrode is subjected to uniform force during clamping and improves the fixation stability.

[0031] Working principle: When materials need to be added into the electric arc furnace body 1, the first motor 206 and the second motor 209 are started respectively. The first motor 206 drives the first feeding fan 205 to rotate in the first feeding box 204, feeding the material in one chamber of the hopper 201 into the electric arc furnace body 1 through the first feeding pipe 210. At the same time, the second motor 209 drives the second feeding fan 208 to rotate in the second feeding box 207, feeding the material in the other chamber of the hopper 201 into the electric arc furnace body 1 through the second feeding pipe 211. By independently controlling the speed of the first motor 206 and the second motor 209, the feeding speed and mixing ratio of the two materials can be precisely adjusted. When it is necessary to install or fix the electrode, the cylinder 302 installed in the mounting plate 301 is activated. The cylinder 302 drives the connecting rod 303 to move linearly. The linear movement of the connecting rod 303 pushes two symmetrically arranged rotating rods 304 to rotate synchronously around the central pivot. The rotation of each rotating rod 304 is transmitted through the linkage of the fixing block 305, the connecting column 306 and the second connecting block 307, and finally drives a pair of clamping blocks 308 to move towards each other, thereby generating a stable and uniform clamping force on the electrode located between the two clamping blocks 308.

Claims

1. A closed-type fixed-polarity boron carbide smelting electric arc furnace, comprising an electric arc furnace body (1), characterized in that, The top of the electric arc furnace body (1) is fixedly connected to a feeding mechanism (2); The dispensing mechanism (2) includes a hopper (201), the interior of which is divided into at least two chambers by a partition (202); The bottom of the hopper (201) is connected to a first feeding box (204) and a second feeding box (207) connected by a first connecting block (203); The first feeding box (204) is rotatably connected to the first feeding fan (205), and the first feeding fan (205) is fixedly connected to the output end of the first motor (206) fixed on the top of the electric arc furnace body (1). The first feeding box (204) is connected to the interior of the electric arc furnace body (1) via the first feeding pipe (210). The second feeding box (207) is rotatably connected to the second feeding fan (208), and the second feeding fan (208) is fixedly connected to the output end of the second motor (209) fixed on the top of the electric arc furnace body (1). The second feeding box (207) is connected to the interior of the electric arc furnace body (1) via the second feeding pipe (211).

2. The closed-type fixed-center boron carbide smelting electric arc furnace according to claim 1, characterized in that, The electric arc furnace body (1) is also fixedly connected to a clamping mechanism (3); the clamping mechanism (3) includes a mounting plate (301), a cylinder (302) is installed inside the mounting plate (301), the output end of the cylinder (302) is fixedly connected to a connecting rod (303), the connecting rod (303) is rotatably connected to one end of a rotating rod (304), and the other end of the rotating rod (304) drives the clamping block (308) through a fixing block (305), a connecting column (306), and a second connecting block (307).

3. The enclosed, fixed-center-circle boron carbide smelting electric arc furnace according to claim 2, characterized in that, The clamping mechanism (3) includes a pair of symmetrically arranged rotating rods (304), a fixing block (305), a connecting column (306), a second connecting block (307), and a clamping block (308). The pair of clamping blocks (308) move towards each other under the drive of the connecting rods (303) to clamp the electrodes.

4. The enclosed, fixed-center-circle boron carbide smelting electric arc furnace according to claim 1, characterized in that, The bottom of the electric arc furnace body (1) is fixedly connected to a support foot (4).

5. The enclosed, fixed-center-circle boron carbide smelting electric arc furnace according to claim 1, characterized in that, The bottom of the electric arc furnace body (1) is provided with a discharge pipe (5).

6. The enclosed, fixed-center-circle boron carbide smelting electric arc furnace according to claim 1, characterized in that, A furnace door (6) is provided on the side wall of the electric arc furnace body (1).

7. The enclosed, fixed-polarity boron carbide smelting electric arc furnace according to claim 6, characterized in that, A handle (7) is fixedly connected to the furnace door (6).

8. The enclosed, fixed-polarity boron carbide smelting electric arc furnace according to claim 2, characterized in that, The connecting rod (303) slides along its length under the drive of the cylinder (302) and drives the rotating rod (304) to rotate about its central pivot.

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