High-temperature evaporation furnace of new structure
Patent Information
- Application Number
- CN202521979628.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-15
AI Technical Summary
然而，现有传统高温蒸发炉存在诸多技术局限：1、进气与观察功能需分开设置独立管道，导致炉体结构复杂，安装繁琐，且多管道衔接处易出现密封问题，增加气体泄漏风险；2、进气方式不合理，气体难以直接作用于金属蒸汽，冷却效率低，易导致粉末粒径不均，影响产品质量；3、部分设备缺乏有效的防倒流设计，炉内金属液面波动时，熔融金属易倒灌至进气管道，引发安全事故
[0010]本实用新型的有益效果是：直通管集成进气与观察功能，简化炉体结构，方便安装，减少密封隐患与气体泄漏风险，同时防倒流设计避免金属倒灌，提升安全性；气体直接作用于金属蒸汽，冷却效率提升，保障粉末粒径均匀和产能，优化产品质量；外壳导电设置方便等离子体弧炬线缆的安装。
Smart Images
Figure CN224824547U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of high-temperature evaporation furnace technology, specifically relating to a high-temperature evaporation furnace with a novel structure. Background Technology
[0002] In the field of metal powder preparation, high-temperature evaporation furnaces are one of the core pieces of equipment. They vaporize metal at high temperatures and then cool it to form powder, which is widely used in new materials, electronics, and other industries. However, existing traditional high-temperature evaporation furnaces have many technical limitations: 1. The gas inlet and observation functions require separate independent pipelines, resulting in a complex furnace structure, cumbersome installation, and potential sealing problems at the joints of multiple pipelines, increasing the risk of gas leakage; 2. Inappropriate gas inlet methods make it difficult for the gas to directly act on the metal vapor, resulting in low cooling efficiency and uneven powder particle size, affecting product quality; 3. Some equipment lacks effective backflow prevention designs, and when the metal liquid level fluctuates inside the furnace, molten metal can easily flow back into the gas inlet pipeline, causing safety accidents. Meanwhile, the existing furnace body insulation and conductivity system design is imperfect. Poor insulation results in excessive energy consumption, and unreasonable conductivity path increases the safety hazards of equipment operation, which restricts the efficiency and safety of metal powder preparation. It is necessary to optimize and improve the structure and function of the high-temperature evaporation furnace. Utility Model Content
[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a novel high-temperature evaporation furnace, comprising an inner crucible, an outer crucible, a top cover, and an outer shell. The inner crucible is placed inside the outer crucible, and the top cover covers the outer crucible. A plasma torch is installed in the middle of the top cover. An exhaust pipe is connected to one side of the top cover, and a straight pipe is connected to the other side. The outer crucible and the top cover are both located inside the outer shell. The straight pipe and the exhaust pipe extend out of the outer shell, respectively. An inlet pipe and a transparent viewing mirror are installed on the part of the straight pipe that extends out of the outer shell. The outer shell includes an upper shell and a lower shell. A supporting base plate is fixedly connected inside the lower shell. The outer crucible is placed on the supporting base plate. The lower end of the upper shell is inserted into the interior of the lower shell. Insulation material is filled between the outer shell and the outer crucible, and between the outer shell and the top cover.
[0004] As a preferred embodiment of the above technical solution, the outer crucible is a conductive crucible, the upper shell, the lower shell, and the supporting base plate are all conductive, the outer shell and the supporting base plate are electrically connected, the upper shell and the lower shell are electrically connected, the lower shell is grounded through a grounding wire, and the lower shell is placed on an insulating frame.
[0005] As a preferred embodiment of the above technical solution, the outer crucible is made of graphite, and the inner crucible is made of graphite or ceramic.
[0006] As a preferred embodiment of the above technical solution, a lower support ring is fixedly connected to the upper end of the lower housing, and an upper support ring is fixedly connected to the upper housing, with the upper support ring placed on the lower support ring.
[0007] As a preferred embodiment of the above technical solution, the plasma torch includes one or a combination of two of the following: a non-transfer torch and a transfer torch.
[0008] As a preferred embodiment of the above technical solution, the insulation material is insulation cotton.
[0009] As a preferred embodiment of the above technical solution, the upper shell, lower shell, and supporting base plate are made of stainless steel.
[0010] The beneficial effects of this utility model are: the straight pipe integrates air intake and observation functions, simplifies the furnace structure, facilitates installation, reduces sealing hazards and gas leakage risks, and the anti-backflow design prevents metal backflow, thus improving safety; the gas directly acts on the metal vapor, improving cooling efficiency, ensuring uniform powder particle size and production capacity, and optimizing product quality; the conductive setting on the outer shell facilitates the installation of plasma torch cables. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0012] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0015] like Figure 1 As shown, the novel high-temperature evaporation furnace includes an inner crucible 1, an outer crucible 2, a top cover 3, and an outer shell. The inner crucible 1 is placed inside the outer crucible 2, and the top cover 3 covers the outer crucible 2. A plasma torch 4 is installed in the middle of the top cover 3. An exhaust pipe 6 is connected to one side of the top cover 3, and a straight pipe 5 is connected to the other side. The outer crucible 2 and the top cover 3 are both located inside the outer shell. The straight pipe 5 and the exhaust pipe 6 extend out of the outer shell, respectively. An inlet pipe 7 and a transparent viewing mirror 8 are connected to the part of the straight pipe 5 that extends out of the outer shell. The outer shell includes an upper shell 9 and a lower shell 10. A supporting base plate 11 is fixedly connected inside the lower shell 10. The outer crucible 2 is placed on the supporting base plate 11. The lower end of the upper shell 9 is inserted into the interior of the lower shell 10. Insulation material 12 is filled between the outer shell and the outer crucible 2, and between the outer shell and the top cover 3, respectively. Metal is placed in inner crucible 1, and plasma torch 4 heats the metal in inner crucible 1 to form metal vapor. Gas is introduced through straight pipe 5, which carries the metal vapor and cools it. The vapor exits the furnace through outlet pipe 6, and after cooling, it forms metal powder. Compared with traditional high-temperature evaporation furnaces where the inlet pipe and sight glass are separate, straight pipe 5 allows for both gas (inert gas) intake and convenient observation of the furnace interior. Furthermore, the furnace installation is more convenient, gas intake is safer, preventing backflow caused by fluctuations in the molten metal surface, and the direct intake of gas carries away the evaporated metal vapor, resulting in better cooling of the metal powder.
[0016] Furthermore, the outer crucible 2 is a conductive crucible, and the upper shell 9, lower shell 10, and supporting base plate 11 are all conductive (made of stainless steel). The outer shell and supporting base plate 11 are electrically connected, the upper shell 9 and lower shell 10 are electrically connected, and the lower shell 10 is grounded through a grounding wire. The lower shell 10 is placed on the insulating frame 14. The plasma torch 4 uses direct current, and its power is generally between 50-300kW. The outer shell is conductive, and the outer crucible 2 and the surrounding outer shell form a conductive path, facilitating the installation of the wires and cables of the plasma torch 4.
[0017] Furthermore, both the outer crucible 2 and the inner crucible 1 are made of graphite. Graphite crucibles have advantages such as low cost, long service life, good chemical stability, high thermal conductivity, and strong high-temperature resistance, making them suitable for the preparation of metal powders.
[0018] Furthermore, a lower support ring 15 is fixedly connected to the upper end of the lower housing 10, and an upper support ring 16 is fixedly connected to the upper housing 9, with the upper support ring 16 placed on the lower support ring 15. The upper support ring 16 and the lower support ring 15 are fixedly connected by several bolts.
[0019] Furthermore, the plasma torch 4 is a combination of a non-transfer torch and a transfer torch. By complementing the functions of the two torches, the limitations of a single torch in terms of energy transfer, operational adaptability, and process stability are overcome, ultimately achieving more efficient, flexible, and higher-quality high-temperature processing results.
[0020] Furthermore, the insulation material 12 is insulation cotton. Insulation cotton is easy to fill and plays a role in heat insulation.
[0021] It is worth mentioning that the technical features involved in this utility model patent application, such as the non-transfer arc torch, the transfer arc torch, and the thermal insulation cotton, should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement methods of these technical features can be adopted using conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.
[0022] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.
Claims
1. A novel high-temperature evaporation furnace, characterized in that, The device includes an inner crucible, an outer crucible, a top cover, and an outer shell. The inner crucible is placed inside the outer crucible, and the top cover is placed on top of the outer crucible. A plasma torch is installed in the middle of the top cover. One side of the top cover is connected to an outlet pipe, and the other side is connected to a straight pipe. The outer crucible and the top cover are both located inside the outer shell. The straight pipe and the outlet pipe extend out of the outer shell, respectively. The part of the straight pipe extending out of the outer shell is connected to an inlet pipe and a transparent viewing mirror. The outer shell includes an upper shell and a lower shell. A supporting base plate is fixedly connected inside the lower shell. The outer crucible is placed on the supporting base plate. The lower end of the upper shell is inserted into the interior of the lower shell. Insulation material is filled between the outer shell and the outer crucible, and between the outer shell and the top cover.
2. The high-temperature evaporator with the novel structure as described in claim 1, characterized in that, The outer crucible is a conductive crucible. The upper shell, lower shell, and supporting base plate are all conductive. The outer shell and supporting base plate are electrically connected. The upper shell and lower shell are electrically connected. The lower shell is grounded through a grounding wire and is placed on an insulating frame.
3. The high-temperature evaporator with the novel structure as described in claim 2, characterized in that, The outer crucible is made of graphite, and the inner crucible is made of graphite or ceramic.
4. The high-temperature evaporator with the novel structure as described in claim 1, characterized in that, The lower housing is fixedly connected to the upper end of a lower support ring, and the upper housing is fixedly connected to an upper support ring, with the upper support ring placed on the lower support ring.
5. The high-temperature evaporator with the novel structure as described in claim 4, characterized in that, The plasma torch includes one or a combination of two types: a non-transfer torch and a transfer torch.
6. The high-temperature evaporator with the novel structure as described in claim 1, characterized in that, The insulation material is insulation cotton.
7. The high-temperature evaporator with the novel structure as described in claim 2, characterized in that, The upper shell, lower shell, and supporting base plate are made of stainless steel.