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茶叶科学 ›› 2013, Vol. 33 ›› Issue (6): 576-583.doi: 10.13305/j.cnki.jts.2013.06.004

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茶叶风选机优化研究

钟江1, 黄剑虹2, 杨韬1, 张宪1, 赵章风1,*   

  1. 1. 浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,浙江 杭州 310014;
    2. 浙江上洋机械有限公司,浙江 衢州 324000
  • 收稿日期:2013-02-18 修回日期:2013-03-26 出版日期:2013-12-30 发布日期:2019-09-04
  • 通讯作者: *i12fly@163.com
  • 作者简介:钟江(1982— ),男,浙江宁波人,博士,助理研究员,主要从事农业装备及自动化研究。
  • 基金资助:
    国家“十二五”科技支撑计划项目(2011BAD29B12)、国家自然科学基金资助项目(31201138)、浙江省科技厅重点科技创新团队项目(2011R09001)

Optimization Study of Tea Winnowing Machine

ZHONG Jiang1, HUANG Jian-hong2, YANG Tao1, ZHANG Xian1, ZHAO Zhang-feng1,*   

  1. 1. Key Laboratory of E&M, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China;
    2. Zhejiang Shangyang Machinery Co., Ltd., Quzhou 324000, China
  • Received:2013-02-18 Revised:2013-03-26 Online:2013-12-30 Published:2019-09-04

摘要: 为提高茶叶风选效果,采用理论分析和流体动力学数值仿真的方法研究了风选过程中茶叶颗粒的运行轨迹和风选室内流场的状态,并进行了相关试验验证。研究表明,茶叶风选机送风口风速分布采用上小下大方案时茶叶颗粒群有效漂移间距最大;风选室内部由于结构原因存在涡旋现象,4号和5号出茶口流出的茶叶颗粒相对质轻,其漂移轨迹较易受到涡旋的影响,可以通过设置扰流板加以减轻,且能有效降低各口茶叶混入其他口茶叶的比例,提高风选质量。

关键词: 茶叶风选机, 送风口风速, 涡旋, 扰流板

Abstract: In order to improve the quality of tea wind-selecting, tea particles’ running track and indoor flow state of winnowing room were studied by the methods of theoretical analysis and fluid dynamics simulation, and combined with experimental verification. The results showed that the effective drift distance between particles of different weight is greater than the other air velocity distribution program when the air velocity distribution near wind crossing was set at rising from the top to the bottom. Vortexes are found in winnowing room due to structural reasons. Trajectory of tea in No. 4 and No. 5 export is more susceptible to the disturbance of the vortex because of its weight. Vortex could be decreased by using spoiler, which will also reduce the proportion of mixed tea and improve the winnowing quality.

Key words: tea winnowing machine, inlet wind speed, vortex, spoiler

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