Auxiliary clamping structure for residual graphite electrode of burning-through device of calcium carbide furnace

Abstract

The utility model discloses a calcium carbide furnace arc burner residual graphite electrode auxiliary clamping structure which comprises a clamping head connecting rod and a clamping structure, the outer diameter of one end of the clamping head connecting rod is the same as the diameter of a graphite electrode, and the other end of the clamping head connecting rod is fixedly provided with the clamping structure used for clamping the graphite electrode. The utility model has the advantages that the chuck connecting rod has the same size as the original graphite electrode, the connecting structure between the chuck connecting rod and the graphite chuck is not changed, and the residual graphite electrode is placed between the movable half tube and the fixed half tube and is directly fixed through the lock catch, so that the graphite electrode is convenient and fast to disassemble and assemble, time-saving and labor-saving, and high in efficiency; and the problem that the graphite electrode is broken due to double-end buckle threaded connection is solved, and the connection stability of the residual graphite electrode is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium carbide furnace burn-through, in particular to an auxiliary clamping structure for residual graphite electrodes of a calcium carbide furnace burn-through device. Background Art

[0002] The burner of the calcium carbide furnace uses the electric arc to burn through the furnace eye through the clamped graphite electrode to realize the process of opening the furnace eye. At present, the burner tool is designed to a fixed length according to the process requirements during the design stage. The production unit then purchases a fixed length of graphite electrodes according to the stroke of the furnace robot, the distance between the screen and the calcium carbide furnace, and the depth of the graphite electrode burning into the furnace eye. The graphite electrode is gradually consumed under the action of high and low temperature arcs. When the stroke of the furnace robot reaches the maximum stroke near the furnace end, and the depth of the graphite electrode burning cannot meet the process requirements, the remaining graphite electrode must be replaced with a complete electrode, and the remaining electrode will become waste and be processed, with low utilization rate and waste. As far as our unit is concerned, the length of the purchased graphite electrode is 2.2 meters, but the usable part is only 1 meter. About 54% of each graphite electrode is not used. At the same time, the base number of graphite electrodes used is large. For our factory's designed production capacity of 600,000 tons of calcium carbide, about 150 tons of graphite electrodes are consumed each year.

[0003] At present, in order to efficiently utilize graphite electrodes, many graphite electrode manufacturers design internal threads 9 at both ends of the electrodes, and then connect the residual graphite electrode 3 and the new electrode 8 fixed on the graphite clamp 5 through a double-head buckle connector 7. The connection diagram is shown in the figure. Figure 1 As shown. However, this technology has many problems in actual production. First, graphite electrode is a brittle material, and the threaded connection is very weak. The furnace robot cannot avoid vibration during movement or burn-through, which makes the threaded connection very easy to break. Second, the length of the connected graphite electrode is large, and the threaded connection is not tight enough, which makes the graphite electrode deflected, affecting the burn-through accuracy of remote operation. The above two technical difficulties make this technology difficult to apply. Utility Model Content

[0004] The utility model aims to provide an auxiliary clamping structure for residual graphite electrodes of a calcium carbide furnace burner.

[0005] The utility model is implemented by the following technical scheme: an auxiliary clamping structure for residual graphite electrode of a calcium carbide furnace burner, which includes a clamping head connecting rod and a clamping structure, wherein the outer diameter of one end of the clamping head connecting rod is the same as the diameter of the residual graphite electrode, and the clamping structure for clamping the residual graphite electrode is fixed at the other end of the clamping head connecting rod.

[0006] Furthermore, the clamping structure includes a fixed half-tube and a movable half-tube which are connected to each other in a circular tube shape, and the inner diameters of the fixed half-tube and the movable half-tube are the same as the diameter of the residual graphite electrode; one end of the fixed half-tube is fixed to the other end of the clamp connecting rod, one side of the fixed half-tube and the movable half-tube are movably hinged, and the other side of the fixed half-tube and the movable half-tube are movably connected by a lock.

[0007] Furthermore, the clamp connecting rod includes a steel tube and a graphite column filled inside the steel tube.

[0008] Furthermore, a connecting plate is fixed between the clamp connecting rod and the clamping structure.

[0009] The advantages of the utility model are as follows: the size of the clamp connecting rod is the same as that of the original graphite electrode, and the connection structure between the clamp connecting rod and the graphite clamp is not changed; the residual graphite electrode is placed between the movable half-tube and the fixed half-tube and is directly fixed by a lock; the removal and installation of the graphite electrode is convenient and quick, saving time and effort and being highly efficient; the problem of graphite electrode breakage caused by the double-head buckle threaded connection is overcome, and the stability of the connection of the residual graphite electrode is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The prior art described as background technology;

[0011] Figure 2 A structural schematic diagram of the utility model;

[0012] Figure 3 Another structural schematic diagram of the utility model;

[0013] Figure 4 This is a schematic diagram of the lock opening structure;

[0014] Figure 5 This is a reference diagram for use in the present utility model.

[0015] A clamping rod 1, a steel pipe 11, a graphite column 12, a clamping structure 2, a fixed half pipe 21, a movable half pipe 22, a residual graphite electrode 3, a locking buckle 4, a graphite clamp 5, a connecting plate 6, a double-head buckle connector 7, a new electrode 8, and an internal thread 9. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] like Figures 2 to 5 As shown, an auxiliary clamping structure for residual graphite electrode of a calcium carbide furnace burner includes a clamping head connecting rod 1 and a clamping structure 2. The outer diameter of one end of the clamping head connecting rod 1 is the same as the diameter of the residual graphite electrode 3, and the clamping structure 2 for clamping the residual graphite electrode 3 is fixed at the other end of the clamping head connecting rod 1. One end of the clamping head connecting rod 1 is inserted into the graphite clamp 5 of the calcium carbide furnace burner, and the clamping structure 2 is used to clamp the residual residual graphite electrode 3, that is, the residual graphite electrode 3 is installed in the graphite clamp 5 of the original calcium carbide furnace burner through the auxiliary clamping structure, so as to achieve the purpose of extending the residual graphite electrode 3, realize the efficient use of the residual graphite electrode 3, and reduce the production cost. A connecting plate 6 is fixed between the clamping head connecting rod 1 and the clamping structure 2.

[0018] The clamping structure 2 includes a fixed half-tube 21 and a movable half-tube 22 that are butt-jointed to form a circular tube. The inner diameters of the fixed half-tube 21 and the movable half-tube 22 are the same as the diameter of the residual graphite electrode 3. One end of the fixed half-tube 21 is fixed to the other end of the clamping head connecting rod 1. One side of the fixed half-tube 21 and the movable half-tube 22 are movably hinged. The other side of the fixed half-tube 21 and the movable half-tube 22 are movably connected through a lock 4. The fixed half-tube 21 and the movable half-tube 22 are both made of a hollow 310S heat-resistant stainless steel tube with a wall thickness of 20 mm, which has good electrical conductivity and stability. The movable half-tube 22 and the fixed half-tube 21 are in a semi-open and closed form, and the lock 4 can be used to achieve quick connection. The removal and installation of the residual graphite electrode 3 can be fast, labor-saving, and firm.

[0019] Furthermore, the clamping head connecting rod 1 includes a steel tube 11 and a graphite column 12 filled therein. The two ends of the graphite column 12 are respectively connected to the less-pierced busbar in the graphite clamping head 5 of the calcium carbide burner and the residual graphite electrode 3 in the clamping structure 2, which can enhance the conductivity of the auxiliary clamping structure and further ensure the burn-through effect. The graphite column 12 is arranged inside the steel tube 11, and no loss will occur during the burn-through process, so it can be reused.

[0020] In actual application, the complete graphite electrodes of this batch can be directly inserted into the graphite chuck 5, and the residual graphite electrodes 3 can be stored centrally. When the complete graphite electrodes are exhausted, the chuck connecting rod 1 of the auxiliary clamping structure of this embodiment is clamped into the graphite chuck 5, the lock 4 is opened, and the residual graphite electrode 3 is clamped into the clamping structure 2 for use, so as to improve the utilization rate of the graphite electrode.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An auxiliary clamping structure for residual graphite electrode of a calcium carbide furnace burner, characterized in that: It comprises a clamping rod and a clamping structure. The outer diameter of one end of the clamping rod is the same as the diameter of the residual graphite electrode. The clamping structure for clamping the residual graphite electrode is fixed on the other end of the clamping rod.

2. The residual graphite electrode auxiliary clamping structure of a calcium carbide furnace burner according to claim 1 is characterized in that: The clamping structure includes a fixed half-tube and a movable half-tube which are butt-jointed to form a circular tube shape, the inner diameters of the fixed half-tube and the movable half-tube being the same as the diameter of the residual graphite electrode; one end of the fixed half-tube is fixed to the other end of the clamping head connecting rod, one side of the fixed half-tube and the movable half-tube are movably hinged, and the other side of the fixed half-tube and the movable half-tube are movably connected by a lock.

3. The residual graphite electrode auxiliary clamping structure of a calcium carbide furnace burner according to claim 1 or 2, characterized in that: The clamp connection rod comprises a steel tube and a graphite column filled inside the steel tube.

4. The residual graphite electrode auxiliary clamping structure of a calcium carbide furnace burner according to claim 1 or 2, characterized in that: A connecting plate is fixed between the clamp connecting rod and the clamping structure.

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