Vacuum furnace electrode

Abstract

The utility model provides a vacuum furnace electrode, which relates to the technical field of vacuum furnace heating equipment, and specifically comprises a mounting seat, a hollow insulating tube, an electrode, an insulating block and a fastener, the interior of the mounting seat is hollow, one end of the hollow insulating tube is inserted into the mounting seat, and the other end of the hollow insulating tube is arranged outside the mounting seat; the mounting seat and the hollow insulating tube form a furnace body, the electrode penetrates through the insulating block and then is inserted into the furnace body, sealing rings are fixed on the mounting seat and the electrode, the fastener comprises a nut and a screw, and one end, inserted into the furnace body, of the electrode further penetrates through a screw hole of the nut to be fixed. And the insulating block and the mounting seat are in threaded connection through the screw. By adopting the technical scheme of the utility model, the technical problems that the sealing performance of the electrode is poor and the effective vacuum degree cannot be achieved during use can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum furnace heating equipment, in particular to a vacuum furnace electrode. Background Art

[0002] A vacuum furnace is an important heating equipment widely used in the fields of powder metallurgy, high-temperature graphitization, and special ceramic production. By heating materials in a vacuum environment, it can effectively prevent adverse reactions such as oxidation and decarburization, thereby ensuring the purity and quality of materials. The high efficiency and reliability of the vacuum furnace make it an indispensable equipment in many high-precision manufacturing fields.

[0003] However, a key technical problem faced during the use of a vacuum furnace is the electrode power supply problem. Since the interior of the vacuum furnace must maintain a high degree of vacuum during operation, how to ensure the sealing of the furnace while supplying power to the electrode to meet the required vacuum degree of the process has become a technical problem that urgently needs to be solved. This not only relates to the performance stability of the equipment but also directly affects the quality of the product and the safety of production.

[0004] In the prior art, there are various power supply methods for vacuum furnace electrodes, but in actual applications, problems such as poor sealing performance and unstable vacuum degree are common, often resulting in pressure fluctuations inside the furnace and affecting the continuity and stability of the process. Therefore, it is of great significance to develop a new electrode structure that can effectively solve the power supply problem of the vacuum furnace while ensuring sealing and vacuum degree. This will help improve the working efficiency of the vacuum furnace and ensure the stability of the production process and the high quality of the product. In view of this, a vacuum furnace electrode is specifically proposed. Summary of the Invention

[0005] The utility model provides a vacuum furnace electrode to solve the technical problem that the electrode in the prior art has poor sealing performance and cannot reach an effective vacuum degree during use.

[0006] The utility model provides a vacuum furnace electrode, which includes a mounting seat, a hollow insulating tube, an electrode, an insulating block, and a fastener. The interior of the mounting seat is hollow. One end of the hollow insulating tube is inserted into the mounting seat, and the other end is placed outside the mounting seat. The mounting seat and the hollow insulating tube form the furnace body. The electrode passes through the insulating block and then inserts into the furnace body. Sealing rings are fixed on both the mounting seat and the electrode. The fastener includes a nut and a screw. One end of the electrode inserted into the furnace body also passes through the screw hole of the nut for fixation. The insulating block and the mounting seat are threadedly connected through the screw.

[0007] The principle and beneficial effects of this technical solution are as follows: The mounting base in this technical solution provides support and fixation. The furnace body formed by the mounting base and the hollow insulating pipe plays a role in protecting and isolating the electrode. At the same time, the insulating block provides additional insulation protection, further enhancing the electrical isolation effect between the electrode and the furnace body. In addition, the set fasteners are used to firmly fix the electrode in the furnace body to ensure that the electrode will not loosen or shift under extreme environments such as high temperature and vacuum.

[0008] Compared with the prior art, the overall structure in this technical solution is more compact, making the disassembly and assembly of the vacuum furnace electrode simple and easy to install and maintain. The sealing ring design on the mounting base and the electrode helps to maintain good sealing performance in the vacuum furnace, prevent gas leakage, and ensure the stability of the vacuum environment. At the same time, the sealing rings are all arranged in the low-temperature area outside the furnace body, which can well protect the sealing rings, thereby reducing their aging speed and increasing their service life. In summary, the vacuum furnace electrode in this technical solution can well meet the requirements of vacuum furnace sealing and electricity conduction.

[0009] Furthermore, the sealing ring is an O-ring, and the sealing ring is made of rubber material. The O-ring is a common design, which is convenient to obtain and replace. At the same time, the sealing ring made of rubber material has good elasticity and corrosion resistance, and can maintain the sealing performance for a long time in high-temperature and vacuum environments.

[0010] Furthermore, the sealing ring fixed on the electrode is the first sealing ring, and the sealing ring fixed on the mounting base is the second sealing ring.

[0011] Furthermore, the outer wall of one end of the hollow insulating pipe inserted into the mounting base is in close fit with the inner wall of the mounting base. The close fit between the hollow insulating pipe and the mounting base ensures the sealing performance of the furnace body and further reduces the risk of gas leakage. At the same time, the close fit design also improves the stability of the overall structure and reduces looseness or vibration caused by assembly tolerances.

[0012] Furthermore, there are 2 nuts. By setting 2 nuts, the fixing strength of the electrode can be further improved to ensure that it will not loosen under high-temperature or high-pressure environments. At the same time, the double-nut design can prevent the nuts from loosening due to vibration or thermal expansion through the mutual locking between the nuts.

[0013] Furthermore, the insulating block is provided with a first threaded hole, the bottom of the mounting base is provided with a second threaded hole, the first threaded hole communicates with the second threaded hole, and the screw passes through the first threaded hole and then inserts into the second threaded hole. By respectively providing the first threaded hole and the second threaded hole on the insulating block and the bottom of the mounting base, the assembly and disassembly between the insulating block and the mounting base are more convenient. At the same time, it is also convenient to tighten and loosen the screw, which is convenient for later maintenance and replacement.

[0014] Furthermore, a plurality of the first threaded holes, the second threaded holes and the screws are provided, and the numbers of the three are equal to each other. In this technical solution, a plurality of the first threaded holes, the second threaded holes and the screws are provided, which can evenly distribute the fastening force, further improving the fixing strength and stability between the insulating block and the mounting seat. At the same time, the design of a plurality of screws can effectively disperse stress, reduce the situation of excessive force on a single screw, and extend the service life.

[0015] Furthermore, the insulating block and the hollow insulating tube are made of a high-temperature resistant insulating material. The insulating block and the hollow insulating tube made of a high-temperature resistant insulating material can ensure good insulation performance in a high-temperature environment and avoid the failure of the insulating material due to high temperature.

[0016] Furthermore, the electrode is made of a high-temperature resistant metal material. The electrode made of a high-temperature resistant metal material can ensure that the electrode is not easily deformed or fails in a high-temperature environment, extending the service life of the electrode. At the same time, the high-temperature resistant metal material usually has good electrical conductivity, ensuring that the electrode can still stably conduct current at high temperature and improving the working efficiency of the vacuum furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional structural schematic diagram of an electrode of a vacuum furnace according to the present invention;

[0019] Figure 2 is a front view of an electrode of a vacuum furnace according to the present invention;

[0020] Figure 3 is a cross-sectional view taken along line C-C in the front view of an electrode of a vacuum furnace according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will describe the implementation schemes of the present invention in detail in combination with the embodiments and examples. However, those skilled in the art will understand that the following embodiments and examples are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0022] The reference signs in the accompanying drawings of the description include: electrode 1, insulating block 2, mounting base 3, base 31, main body 32, hollow insulating tube 4, first sealing ring 51, second sealing ring 52, nut 61, screw 62, first threaded hole 7, and second threaded hole 8.

[0023] This embodiment provides a vacuum furnace electrode. As shown in Figure 1 , Figure 2 and Figure 3 , it includes a mounting base 3, a hollow insulating tube 4, an electrode 1, an insulating block 2, and fasteners. The mounting base 3 includes a main body 32 and a base 31. The structure of the main body 32 is a cylindrical structure, and the interior of the cylinder is hollow, which is used to accommodate the inserted parts of the hollow insulating tube 4 and the electrode 1. The base 31 is used to provide support and fixation, and an opening is also provided on the base 31, so that the electrode 1 can pass through the opening of the base 31 and enter the cylinder. The base 31 and the main body 32 are detachably connected.

[0024] The hollow insulating tube 4 is used for protecting and isolating the electrode 1. The pipe orifice size of the hollow insulating tube 4 is slightly smaller than the end size of the above-mentioned cylinder, so that the hollow insulating tube 4 can be inserted into the cylinder (not completely inserted), that is, one end of the hollow insulating tube 4 is inserted into the above-mentioned cylinder, and its end is on the same horizontal line as the bottom of the cylinder, and the other end is placed outside the cylinder. At the same time, the outer wall of one end of the hollow insulating tube 4 inserted into the cylinder is in close fit with the inner wall of the mounting base 3. The above-mentioned mounting base 3 and the hollow insulating tube 4 together form the furnace body.

[0025] The electrode 1 is used to introduce current into the vacuum furnace and participate in the material heating or reaction process. The external contour shape of the electrode 1 is cylindrical, and it is made of high-temperature resistant metal materials (such as stainless steel, brass, etc.). Selecting high-temperature resistant metal materials to make the electrode 1 can ensure that the electrode 1 is not easily deformed or fails in a high-temperature environment, and extends the service life of the electrode 1, for example. At the same time, high-temperature resistant metal materials usually have good electrical conductivity, ensuring that the electrode 1 can still stably conduct current at high temperatures and improving the working efficiency of the vacuum furnace.

[0026] The insulating block 2 is used to provide additional insulation protection. A second opening is provided on the insulating block 2, so that the above-mentioned electrode 1 can pass through the insulating block 2 through the second opening and then pass through the first opening on the mounting base 3 and enter the furnace body, thus forming a vacuum furnace electrode. A first threaded hole 7 is also provided on the insulating block 2, and a second threaded hole 8 is provided at the bottom of the mounting base 3. In this embodiment, both the first threaded hole 7 and the second threaded hole 8 are provided with 4. In other different scenarios, the corresponding numbers of the first threaded hole 7 and the second threaded hole 8 can be set as required.

[0027] Fasteners are used to fix the above-mentioned electrode 1 to ensure that the electrode 1 will not loosen or shift under extreme environments such as high temperature and vacuum. The fasteners include a nut 61 and a screw 62. The nut 61 and the screw 62 can be selected from the nuts 61 and screws 62 in the prior art. According to different scenario requirements, appropriate sizes can be selected for use, which will not be elaborated here. The above-mentioned electrode 1 passes through the furnace body and then through the screw hole of the nut 61 for fixation, while the screw 62 is used to fixedly connect the mounting seat 3 and the insulating block 2 through threaded connection. That is, the screw 62 is first tightened with the second threaded hole 8 and then tightened with the first threaded hole 7, so that the mounting seat 3 and the insulating block 2 are connected together.

[0028] In this embodiment, 2 nuts 61 are provided, and the number of screws 62 is the same as the number of the above-mentioned first threaded holes 7 and second threaded holes 8, both being 4. By providing 2 nuts 61, the fixing strength of the electrode 1 can be further improved to ensure that it will not loosen under high temperature or high pressure environments. At the same time, the double-nut 61 design can prevent the loosening of the nut 61 caused by vibration or thermal expansion through the mutual locking between the nuts 61.

[0029] In this embodiment, sealing grooves are also provided on the mounting seat 3 and the electrode 1, and an O-ring is detachably connected to the sealing groove, thereby further improving the airtightness of the electrode 1 of the vacuum furnace. The groove structure of the sealing groove is O-shaped, and the O-ring is also selected as an O-shaped O-ring. Since the O-ring is a commonly used design in the existing design, it is convenient to obtain and replace. The sealing groove on the above-mentioned electrode 1 is the first sealing groove, and the O-ring is the first O-ring 51, while the sealing groove on the mounting seat 3 is the second sealing groove, and the O-ring is the second O-ring 52. In addition, the O-rings in this embodiment are all made of rubber materials (such as one of fluororubber, silica gel, and nitrile rubber). The O-ring made of rubber material has good elasticity and corrosion resistance, and can maintain the sealing performance for a long time in high temperature and vacuum environments.

[0030] The insulating block 2 and the hollow insulating tube 4 in this embodiment are made of high-temperature resistant insulating materials (such as one of polytetrafluoroethylene, mica plate, asbestos board, and bakelite board). Selecting high-temperature resistant insulating materials to make the insulating block 2 and the hollow insulating tube 4 can ensure good insulation performance in high temperature environments and avoid the failure of insulating materials due to high temperature.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vacuum furnace electrode, characterized in that: The invention comprises a mounting seat, a hollow insulating tube, an electrode, an insulating block and a fastener. The mounting seat is hollow inside. One end of the hollow insulating tube is inserted into the mounting seat, and the other end is placed outside the mounting seat. The mounting seat and the hollow insulating tube constitute a furnace body. The electrode passes through the insulating block and is then inserted into the furnace body. Sealing rings are fixed on the mounting seat and the electrode. The fastener comprises a nut and a screw. One end of the electrode inserted into the furnace body also passes through the screw hole of the nut to be fixed. The insulating block and the mounting seat are threadedly connected by the screw.

2. The vacuum furnace electrode according to claim 1, characterized in that: The sealing ring is an O-type sealing ring, and the sealing ring is made of rubber material.

3. The vacuum furnace electrode according to claim 1 or 2, characterized in that: The sealing ring fixed on the electrode is a first sealing ring, and the sealing ring fixed on the mounting seat is a second sealing ring.

4. The vacuum furnace electrode according to claim 1, characterized in that: The outer wall of one end of the hollow insulating tube inserted into the mounting seat is tightly fitted with the inner wall of the mounting seat.

5. The vacuum furnace electrode according to claim 1, characterized in that: The nuts are provided with two.

6. The vacuum furnace electrode according to claim 1, characterized in that: The insulating block is provided with a first threaded hole, the bottom of the mounting seat is provided with a second threaded hole, the first threaded hole is communicated with the second threaded hole, and the screw passes through the first threaded hole and then is inserted into the second threaded hole.

7. The vacuum furnace electrode according to claim 6, characterized in that: The first threaded hole, the second threaded hole and the screw are each provided in a plurality, and the number of the three is equal to each other.

8. The vacuum furnace electrode according to claim 1, characterized in that: The insulating block and the hollow insulating tube are made of high temperature resistant insulating material.

9. The vacuum furnace electrode according to claim 1, characterized in that: The electrode is made of high temperature resistant metal material.

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