Sampling device of graphite electrode

Abstract

The utility model relates to the related technical field of graphite electrodes, and discloses a graphite electrode sampling device which comprises a tool bit and a core digging pipe, the tool bit is located at the left end of the core digging pipe, an assembly hole is formed in the inner wall of the core digging pipe in a penetrating mode in the axis direction, a saw blade transmission shaft is rotationally arranged in the assembly hole, and an inner groove is formed in the inner wall of the core digging pipe; one end of the saw blade is connected with a saw blade transmission shaft, the right end of the saw blade transmission shaft extends out of the core digging pipe to be connected with a crank, saw teeth are arranged on the side, close to the axis of the core digging pipe, of the saw blade, rolling bearings are arranged at the left end and the right end of the assembly hole, and the saw blade transmission shaft is connected with the rolling bearings in a penetrating mode. And an elastic check ring is arranged at the joint of the saw blade transmission shaft and the rolling bearing. The graphite electrode core-pulling device is convenient for core-pulling processing of a graphite electrode, avoids blockage of the inner sleeve, and greatly improves the sampling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite electrodes, in particular to a sampling device for graphite electrodes. Background Art

[0002] A graphite electrode is a high-temperature-resistant graphite conductive material processed from raw materials such as petroleum coke through a graphitization process. After production, the graphite electrode needs to be sampled to analyze its internal physical and chemical properties.

[0003] At present, the sampling length of general sampling devices for graphite electrodes on the market is generally between 300 - 400 mm. When the length is greater than 500 mm, the diameters of the samples taken are inconsistent, and fractures are likely to occur in the middle, resulting in sleeve blockage and affecting production.

[0004] Therefore, those skilled in the art urgently need to develop a sampling device for graphite electrodes. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies in the prior art and provide a sampling device for graphite electrodes.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: A sampling device for graphite electrodes includes a cutter head and a core extraction tube. The cutter head is located at the left end of the core extraction tube. An assembly hole is axially penetrated through the inner wall of the core extraction tube. A saw blade transmission shaft is arranged inside the assembly hole. An inner groove is formed on the inner wall of the core extraction tube. The inner groove communicates with the assembly hole. A saw blade is arranged in the inner groove. One end of the saw blade is connected to the saw blade transmission shaft. The right end of the saw blade transmission shaft extends out of the core extraction tube and is connected to a crank. On the side of the saw blade close to the central axis of the core extraction tube, there are saw teeth.

[0007] Preferably, rolling bearings are arranged at both the left and right ends of the assembly hole. The saw blade transmission shaft is connected through the rolling bearings, and an elastic retaining ring is arranged at the connection between the saw blade transmission shaft and the rolling bearings.

[0008] Preferably, three dust extraction holes are axially penetrated through the inner wall of the core extraction tube. The three dust extraction holes are evenly distributed in a ring on the core extraction tube.

[0009] Preferably, the number of cutter heads is six, and they are evenly distributed in a ring on the core extraction tube.

[0010] Preferably, the cutter head and the core extraction tube are fixed by welding. The cutter head is a cemented carbide cutter head.

[0011] Preferably, the saw blade transmission shaft is fixedly connected to the crank and the saw blade by screws.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, the saw blade is located inside the core drilling pipe. Compared with placing the saw blade outside, it is more convenient for the cutting head at the left end of the core drilling pipe to perform core drilling on the graphite electrode. At the same time, the saw blade is located inside the inner groove, ensuring that the graphite electrode is not affected when entering the core drilling pipe, thereby avoiding problems such as interference inside and blockage of the sleeve.

[0014] 2. In the present utility model, the reserved dust extraction hole can be used for dust extraction during sampling, thereby reducing the accumulation of dust on the left side of the core drilling pipe during the core drilling process, which affects the subsequent cutting of the saw teeth. The cutting head is made of cemented carbide with excellent performance. At the same time, with six cutting heads, the sampling efficiency is greatly improved, ensuring the consistency of the sampling diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the side view structural schematic diagram of the present utility model;

[0017] Figure 3 is Figure 1 the sectional view in the A-A direction of

[0018] Figure 4 is Figure 1 the sectional view in the C-C direction of

[0019] Figure 5 is Figure 3 the enlarged view of the structure at B in

[0020] Figure 6 is Figure 3 the enlarged view of the structure at D in

[0021] In the figure: 1 - cutting head; 2 - core drilling pipe; 21 - dust extraction hole; 22 - assembly hole; 23 - inner groove; 3 - saw blade drive shaft; 4 - elastic retaining ring; 5 - rolling bearing; 6 - screw; 7 - crank; 8 - saw blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be clearly described below in conjunction with the drawings in the embodiments of the present utility model and specific embodiments. The description here is only used to explain the present utility model, but not to limit the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present utility model.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to Figures 1-6 , the present utility model provides an embodiment: a sampling device for a graphite electrode, including a cutter head 1 and a core drilling tube 2. The cutter head 1 is located at the left end of the core drilling tube 2. An assembly hole 22 is axially penetrated through the inner wall of the core drilling tube 2. A saw blade transmission shaft 3 is rotatably arranged inside the assembly hole 22. An inner groove 23 is formed on the inner wall of the core drilling tube 2. The inner groove 23 is communicated with the assembly hole 22. A saw blade 8 is arranged in the inner groove 23. One end of the saw blade 8 is connected to the saw blade transmission shaft 3. The right end of the saw blade transmission shaft 3 extends out of the core drilling tube 2 and is connected to a crank 7. On the side of the saw blade 8 close to the central axis of the core drilling tube 2, there are saw teeth. The saw blade transmission shaft 3 is fixedly connected to the crank 7 and the saw blade 8 by screws 6. The outer surface of the core drilling tube 2 is marked with scales for measuring the sampling length of the graphite electrode.

[0026] Specifically, the inner groove 23 is in the shape of an arc-shaped inner groove, and the saw blade 8 is a 1 / 4 circular arc structure. By rotating the crank 7, the saw blade transmission shaft 3 is driven to rotate, thereby driving the saw blade 8 to rotate, and the sample is cut and taken out through the saw teeth.

[0027] Furthermore, rolling bearings 5 are arranged at both the left and right ends of the assembly hole 22. The saw blade transmission shaft 3 is connected through the rolling bearings 5, and an elastic retaining ring 4 is arranged at the connection between the saw blade transmission shaft 3 and the rolling bearings 5.

[0028] Specifically, the arrangement of the rolling bearings 5 makes the rotation of the saw blade transmission shaft 3 in the assembly hole 22 smoother, and the elastic retaining ring 4 can prevent the saw blade transmission shaft 3 and the rolling bearings 5 from falling off the assembly hole 22.

[0029] Further, three dust extraction holes 21 are axially and penetratingly formed in the inner wall of the core extraction pipe 2, and the three dust extraction holes 21 are evenly distributed in a ring on the core extraction pipe 2.

[0030] Specifically, the reserved dust extraction holes 21 can be used for dust extraction during sampling. The right end of the dust extraction hole 21 can be sequentially connected to a dust extraction pipe and a dust extraction fan, and dust extraction is carried out through the dust extraction fan, so as to reduce the accumulation of dust on the left side of the core extraction pipe 2 during the core extraction process and affect the subsequent cutting of the saw teeth 8.

[0031] Further, the number of the cutting heads 1 is six, and they are evenly distributed in a ring on the core extraction pipe 2. The cutting heads 1 and the core extraction pipe 2 are fixed by welding, and the cutting heads 1 are cemented carbide cutting heads.

[0032] Specifically, the cemented carbide cutting heads 1 have a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, and corrosion resistance. At the same time, with six cutting heads 1, the sampling efficiency is greatly improved.

[0033] Preferably, the size of the cutting head 1 is 30*35mm, the thickness of the cutting head 1 is 20mm, the length dimension of the core extraction pipe 2 is 800mm, the diameter of the core extraction pipe 2 is 240mm, the wall thickness of the core extraction pipe 2 is 20mm, the width and depth of the inner groove 23 are both 10mm, and the distance from the inner groove 23 to the left end of the core extraction pipe 2 is 20mm.

[0034] Specifically, by increasing the length of the core extraction pipe 2, the shortage of the sampling length and the situation of intermediate fracture can be effectively solved; the saw blade 8 is located inside the core extraction pipe 2. Compared with placing the saw blade 8 outside, it is more convenient for the cutting head 1 at the left end of the core extraction pipe 2 to carry out core extraction processing on the graphite electrode; at the same time, the saw blade 8 is located inside the inner groove 23, ensuring that the graphite electrode is not affected when entering the core extraction pipe 2, and thus avoiding the problems of interference inside and sleeve blockage.

[0035] The working principle of the present utility model: When the present utility model is in use, first clamp the graphite electrode to be core-extracted on the lathe chuck, and move and fix the sampling device to the lathe tailstock. After measuring and marking the length of the graphite electrode to be sampled according to the scale on the outer surface of the core extraction pipe 2, the lathe drives the graphite electrode to rotate. Through the movement of the sampling device, the cutting head 1 carries out core extraction processing on the graphite electrode. The core extraction length is determined by the scale on the outer surface of the core extraction pipe 2. By rotating the crank 7, the saw blade transmission shaft 3 is driven to rotate, thereby driving the saw blade 8 to rotate. After cutting off the graphite electrode with the saw teeth, the sample is taken out.

[0036] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A sampling device for graphite electrodes, characterized in that: The invention comprises a cutter head (1) and a core cutting tube (2), wherein the cutter head (1) is located at the left end of the core cutting tube (2), an assembly hole (22) is provided through the inner wall of the core cutting tube (2) along the axial direction, a saw blade transmission shaft (3) is rotatably provided inside the assembly hole (22), an inner groove (23) is provided on the inner wall of the core cutting tube (2), the inner groove (23) and the assembly hole (22) are communicated with each other, a saw blade (8) is provided in the inner groove (23), one end of the saw blade (8) is connected to the saw blade transmission shaft (3), the right end of the saw blade transmission shaft (3) extends out of the core cutting tube (2) and is connected to a crank (7), and the saw blade (8) is provided with saw teeth on the side close to the central axis of the core cutting tube (2).

2. A graphite electrode sampling device according to claim 1, characterized in that: Rolling bearings (5) are provided at both left and right ends of the assembly hole (22); the saw blade transmission shaft (3) and the rolling bearing (5) are connected through the saw blade transmission shaft (3); and an elastic retaining ring (4) is provided at the connection between the saw blade transmission shaft (3) and the rolling bearing (5).

3. A graphite electrode sampling device according to claim 1, characterized in that: The inner wall of the core-cutting tube (2) is provided with three dust extraction holes (21) penetrating along the axial direction, and the three dust extraction holes (21) are evenly distributed on the core-cutting tube (2) in a ring shape.

4. A sampling device for graphite electrodes according to claim 1, characterized in that: The number of the cutter heads (1) is six and they are evenly distributed in a ring shape on the core-cutting tube (2).

5. A sampling device for graphite electrodes according to claim 4, characterized in that: The cutter head (1) and the core-cutting tube (2) are fixed by welding, and the cutter head (1) is a hard alloy cutter head.

6. A graphite electrode sampling device according to claim 1, characterized in that: The saw blade transmission shaft (3), the crank handle (7) and the saw blade (8) are all fixedly connected via screws (6).

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