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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
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86-571-87239571
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No.9 Gaoguannong,Daxue Road,Hangzhou,China
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meem_contribute@163.com
Abstract: The separator used in existing atomization powder making equipment has poor performance in collecting powder, and its classification efficiency is also low, which makes it unable to meet the powder particle size requirements for metal additive manufacturing. Therefor,the two-stage series cyclone was used as the research object, and the connection pipe diameter and other parameters of the cyclone were numerically studied. Firstly, in order to verify the reliability of the numerical simulation model and its boundary conditions, the aerosolization powder production test was carried out. Then, computational fluid dynamics simulation (CFD) was used to simulate the cyclone, and the influence of the change of connecting pipe diameter on the flow field of cyclone separator and the performance of separator such as pressure drop, separation efficiency and cutting particle size was studied. Finally, other cyclone parameters were simulated when the diameter of the connecting pipe was determined, and the influence of inlet shape and cone length on the flow field and separation performance of the cyclone separator were studied respectively. The results show that the separation efficiency of cyclone separator is highest when the connecting pipe diameter d=130mm. As the diameter of the cyclone separator's connecting pipe increases, the cut particle size gradually increases. The cyclone separator with a circular A-shaped inlet has the highest separation efficiency. As the aspect ratio of the rectangle increases, the separation efficiency decreases and the cut particle size increases. An increase in the cone length initially enhances the cyclone separator's separation efficiency, which then declines, with the highest separation efficiency observed in scheme 3, and a gradual decrease in the cut particle size.
Key words: chemical machinery and equipment; metal additive manufacturing; numerical simulation; tangential velocity; separation efficiency; inlet shape; cone length
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