A dummy extension device for high-efficiency utilization of graphite electrodes

Abstract

This utility model relates to the field of metallurgical technology, and in particular to a dummy connection extender for efficient utilization of graphite electrodes. It includes a wire connection part, an extension post, and a clamping part made of metal. One end of the extension post is fixedly connected to one end of the wire connection part, and the other end of the extension post is fixedly connected to one end of the clamping part. The outer wall of the wire connection part is provided with external threads, and the length direction of the wire connection part is the same as the length direction of the extension post. As a dummy connection extender for graphite electrodes, this utility model can fix and electrically connect graphite electrodes inserted into the furnace bore to the clamping part. It can re-extend graphite electrodes that are no longer usable due to insufficient length into the furnace for reuse, reducing graphite electrode wear, improving the effective utilization rate of graphite electrodes, and lowering production costs. This utility model is easy to connect to graphite electrodes, reducing the labor intensity of operators replacing graphite electrodes; it can be reused multiple times, resulting in low operating costs.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, and in particular to a dummy extension device for efficient utilization of graphite electrodes. Background Technology

[0002] Electric furnaces are used in the metallurgical field. A key feature of electric furnaces is the presence of electrodes extending into the furnace from the furnace lid. These electrodes are typically made of graphite. Graphite electrodes are conductors that release electrical energy in the form of an electric arc to heat and melt the furnace charge. The function of the graphite electrodes is to guide current into the furnace, generating a high-temperature electric arc between the electrodes and the furnace charge.

[0003] In the existing technology, the process of feeding the operating electrode into the furnace is accomplished by a dedicated electrode clamping mechanism. There are various forms of electrode clamping mechanisms. The basic principle is that the clamping mechanism's brake surrounds the graphite electrode. At the same time, the depth of the furnace aperture limits the length of the graphite electrode that can be extended into the furnace. This results in a limited effective length for each graphite electrode. After the graphite electrode extended into the furnace is continuously consumed during use, its length shortens to a certain extent and it can no longer be used, resulting in waste of graphite electrodes and increasing the production cost of enterprises. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dummy extension device for efficient utilization of graphite electrodes, which can extend graphite electrodes that cannot be used due to insufficient length after use back into the furnace for reuse, effectively improving the utilization rate of graphite electrodes and reducing the operating costs of enterprises.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A dummy connection extender for efficient utilization of graphite electrodes includes a wire connection part, an extension post and a clamping part made of metal material. One end of the extension post is fixedly connected to one end of the wire connection part, and the other end of the extension post is fixedly connected to one end of the clamping part. The outer wall of the wire connection part is provided with a wire external thread, and the length direction of the wire connection part is the same as the length direction of the extension post.

[0006] The beneficial effects of this utility model are as follows: As a temporary extension device for graphite electrodes, this utility model can fix and electrically connect the graphite electrode and the clamp inserted into the furnace eye, avoiding the waste of graphite electrodes caused by the graphite electrode needing to extend out of the furnace eye to connect with the clamp, reducing graphite electrode wear, improving the effective utilization rate of graphite electrodes, and reducing production costs; this utility model is convenient to connect with graphite electrodes, reducing the labor intensity of operators replacing graphite electrodes; at the same time, this utility model can be reused, with low operating costs; and through this utility model, graphite electrodes that cannot be used again due to insufficient length can be extended back into the furnace for reuse.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the extension post has a tubular structure, and the outer diameter of the extension post is smaller than the outer diameter of the threaded connection.

[0009] The beneficial effects of adopting the above-mentioned further solution are: the extension column adopts a tubular structure and its outer diameter is smaller than that of the wire joint, thereby reducing the weight of the extension column and reducing the load on the clamp.

[0010] Furthermore, the clamping part is provided with through holes extending through both ends.

[0011] The beneficial effect of adopting the above-mentioned further solution is that: the clamping part is provided with through holes that run through both ends, which further reduces the overall weight and thus further reduces the load of the clamp.

[0012] Furthermore, a plurality of annular reinforcing ribs are provided at intervals along the length of the through hole, and the outer peripheral wall of the annular reinforcing ribs is fixedly connected to the inner wall of the through hole.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the setting of the annular reinforcing rib can ensure the strength of the clamping part with through holes.

[0014] Furthermore, one end of the extension post is disposed inside one end of the through hole, and the extension post is interference-fitted with the through hole.

[0015] The advantages of adopting the above-mentioned further solution are: the extension column and the clamping part are fixedly connected by an interference fit, which does not require additional connection structure, making the structure simple and the connection convenient.

[0016] Furthermore, one end of the through hole is provided with an internal thread, and one end of the extension post is provided with an external thread. The extension post and the clamping part are connected by the internal thread and the external thread.

[0017] The advantages of adopting the above-mentioned further solution are: the extension column and the clamping part are connected by threads, making installation and disassembly convenient.

[0018] Furthermore, a plurality of reinforcing plates are provided at the connection between the extension column and the clamping part, and the reinforcing plates are fixedly connected to both the extension column and the clamping part.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the setting of the reinforcing plate can further ensure the connection strength between the extension column and the clamping part.

[0020] Furthermore, the outer wall of the extension post is located inside the extension ring that extends along the length direction of the outer peripheral wall of the threaded joint.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the entire end face of the extension post can be connected to the end face of the threaded joint, which can ensure the strength of the connection between the end face of the extension post and the end face of the threaded joint.

[0022] Furthermore, the threaded portion, the extension post, and the clamping portion are all arranged coaxially.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the threaded part, the extension column and the clamping part are all set on the same axis, ensuring that the center of gravity of the entire equipment is on the axis and avoiding deflection during movement.

[0024] Furthermore, an annular clamping groove is provided on the outer wall of the clamping part.

[0025] The beneficial effects of adopting the above-mentioned further solution are: the setting of the annular clamping groove can facilitate the positioning and clamping of the clamp, ensuring the stability and firmness of the clamping. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Threaded connection; 2. Extension post; 3. Clamping part; 4. Threaded external thread; 5. Through hole; 6. Annular reinforcing rib; 7. Reinforcing plate; 8. Annular clamping groove. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] like Figure 1 As shown, the embodiment of this utility model includes a wire joint 1, an extension post 2, and a clamping part 3 made of metal. The wire joint 1, the extension post 2, and the clamping part 3 are all made of metal to ensure the overall conductivity, facilitate the electrical connection between the graphite electrode and the outside, and at the same time ensure the overall strength so that they do not bend or deform under high temperature baking, wire end load, and high current.

[0031] One end of the extension post 2 is fixedly connected to one end of the threaded connection part 1. The extension post 2 and the threaded connection part 1 can be fixedly connected by welding, by thread, or by integrated connection. The other end of the extension post 2 is fixedly connected to one end of the clamping part 3. The outer wall of the threaded connection part 1 is provided with external thread 4. The length direction of the threaded connection part 1 is the same as the length direction of the extension post 2.

[0032] In an embodiment of this utility model, the extension post 2 is a tubular structure, and the outer diameter of the extension post 2 is smaller than the outer diameter of the threaded part 1. The extension post 2 adopts a tubular structure and the outer diameter is smaller than the outer diameter of the threaded part 1, thereby reducing the weight of the extension post 2 and reducing the load on the clamp.

[0033] The clamping part 3 is provided with through holes 5 extending through both ends of it. The through holes 5 extending through both ends of the clamping part 3 further reduce the overall weight, thereby further reducing the load of the clamp.

[0034] In an embodiment of this utility model, a plurality of annular reinforcing ribs 6 are provided at intervals along the length of the through hole 5. The outer peripheral wall of the annular reinforcing rib 6 is fixedly connected to the inner wall of the through hole 5, preferably by welding. The arrangement of the annular reinforcing ribs 6 can ensure the strength of the clamping part 3 with the through hole 5.

[0035] In one embodiment of this utility model, one end of the extension post 2 is disposed inside one end of the through hole 5. The extension post 2 and the through hole 5 are connected by an interference fit. The extension post 2 and the clamping part 3 are fixedly connected by an interference fit, without the need for additional connection structures. The structure is simple and the connection is convenient. In this embodiment of the utility model, when the extension post 2 and the through hole 5 are connected by an interference fit, in order to ensure connection strength and good conductivity, one end of the extension post 2 can also be welded and fixed to the adjacent annular reinforcing rib 6.

[0036] In another embodiment of this utility model, one end of the through hole 5 is provided with an internal thread, and one end of the extension post 2 is provided with an external thread. The extension post 2 and the clamping part 3 are connected by the internal thread and the external thread. The extension post 2 and the clamping part 3 are connected by the thread, which makes installation and disassembly convenient.

[0037] In other embodiments of this utility model, the extension column 2 can also be connected to the clamping part 3 in an integrated fixed connection manner.

[0038] In this embodiment of the invention, a plurality of reinforcing plates 7 are provided at the connection between the extension column 2 and the clamping part 3. The reinforcing plates 7 are fixedly connected to both the extension column 2 and the clamping part 3. Specifically, the plurality of reinforcing plates 7 are evenly arranged along the circumference of the extension column 2. The reinforcing plates 7 are preferably triangular or trapezoidal. One side of each reinforcing plate 7 is fixedly connected to the outer wall of the extension column 2, and the other side is fixedly connected to the end face of the clamping part 3. In this embodiment, the reinforcing plates 7 are preferably fixedly connected to the extension column 2 and the clamping part 3 by welding. The arrangement of the reinforcing plates 7 further ensures the connection strength between the extension column 2 and the clamping part 3.

[0039] In an embodiment of this utility model, the outer wall of the extension post 2 is located inside the extension ring extending along the length direction of the outer peripheral wall of the threaded connection 1. That is, the outer peripheral wall of the threaded connection 1 extends along the length direction towards one end connected to the extension post 2 to form a virtual extension ring. The extension post 2 is located within this extension ring, thereby enabling the entire end face of the extension post 2 to connect with the end face of the threaded connection 1, ensuring the strength of the connection between the end face of the extension post 2 and the end face of the threaded connection 1. Furthermore, the threaded connection 1, the extension post 2, and the clamping part 3 are all coaxially arranged, ensuring that the center of gravity of the entire device is on the axis, preventing deflection during movement.

[0040] In embodiments of this utility model, the clamping part 3 can be fixedly connected to the clamping device through an interference fit. The clamping device can also adopt an adjustable clamping mechanism. When the clamping device adopts an adjustable clamping mechanism, an annular clamping groove 8 is provided on the outer wall of the clamping part 3. The inner diameter of the annular clamping groove 8 matches the clamping inner diameter of the clamping device. This ensures that when the clamping device clamps the clamping part 3, the groove wall of the annular clamping groove 8 limits the clamping device. On the one hand, this ensures the close contact and conductivity between the clamping device and the clamping part 3. On the other hand, it prevents the clamping part 3 from moving relative to the clamping device under the action of gravity due to the clamping device not being firmly clamped.

[0041] Working principle: The end of the graphite electrode is provided with a threaded internal groove. The threaded external thread 4 on the threaded part 1 is machined according to the actual size of the threaded internal groove of the graphite electrode. The machining accuracy needs to ensure that the threaded external thread 4 on the threaded part 1 and the threaded internal groove of the graphite electrode can be tightly connected to ensure good connection strength and conductivity. The threaded part 1 is fixedly connected to the extension column 2, and then the extension column 2 is fixedly connected to the clamping part 3. The graphite electrode is fixed to the threaded part 1 by threading, and then the clamping part 3 is clamped on the clamp. The drive mechanism drives the clamp and the dummy extension to move, so that the graphite electrode is inserted into the appropriate position of the furnace hole. Then, the power is turned on so that the graphite electrode releases electrical energy to heat and melt the furnace charge.

[0042] This invention serves as a temporary extension for graphite electrodes, enabling the fixed and conductive connection between the graphite electrode and the clamp inserted into the furnace bore. This avoids the waste of the graphite electrode caused by it needing to extend beyond the furnace bore to connect with the clamp, reducing electrode wear, increasing its effective utilization rate, and significantly lowering the solid waste rate, thus reducing production costs. Furthermore, this invention allows graphite electrodes that are no longer usable due to insufficient length to be reinserted into the furnace for reuse. The connection between this invention and the graphite electrode is convenient, reducing the labor intensity of operators replacing graphite electrodes. Additionally, this invention is reusable and has low operating costs.

[0043] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A false joint extender for efficient use of graphite electrodes, characterized by, It includes a wire connection part (1), an extension post (2) and a clamping part (3) made of metal. One end of the extension post (2) is fixedly connected to one end of the wire connection part (1), and the other end of the extension post (2) is fixedly connected to one end of the clamping part (3). The outer wall of the wire connection part (1) is provided with a wire external thread (4), and the length direction of the wire connection part (1) is the same as the length direction of the extension post (2).

2. The false joint extender for efficient use of graphite electrodes according to claim 1, characterized by The extension column (2) is a tubular structure, and the outer diameter of the extension column (2) is smaller than the outer diameter of the wire connection (1).

3. The false extension device for efficient use of graphite electrodes according to claim 1, characterized in that, The clamping part (3) is provided with through holes (5) extending through both ends of it.

4. The false joint extender for efficient use of graphite electrodes according to claim 3, characterized by Multiple annular reinforcing ribs (6) are spaced apart along the length of the through hole (5), and the outer peripheral wall of the annular reinforcing ribs (6) is fixedly connected to the inner wall of the through hole (5).

5. A dummy connection extender for efficient utilization of graphite electrodes according to claim 3, characterized in that, One end of the extension post (2) is located inside one end of the through hole (5), and the extension post (2) is connected to the through hole (5) by an interference fit.

6. The false joint extender for efficient use of graphite electrodes according to claim 3, characterized by One end of the through hole (5) is provided with an internal thread, and one end of the extension post (2) is provided with an external thread. The extension post (2) and the clamping part (3) are connected by the internal thread and the external thread.

7. The false extension of graphite electrode according to any one of claims 1 to 6, characterized in that, Multiple reinforcing plates (7) are provided at the connection between the extension column (2) and the clamping part (3), and the reinforcing plates (7) are fixedly connected to the extension column (2) and the clamping part (3).

8. The false extension of graphite electrode according to any one of claims 1 to 6, characterized in that, The outer wall of the extension column (2) is located inside the extension ring that extends along the length direction of the outer peripheral wall of the threaded part (1).

9. A dummy connection extender for efficient utilization of graphite electrodes according to any one of claims 1 to 6, characterized in that, The threaded part (1), the extension post (2), and the clamping part (3) are all arranged on the same axis.

10. The false extension of graphite electrode according to any one of claims 1 to 6, characterized in that, The outer wall of the clamping part (3) is provided with an annular clamping groove (8).

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