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Optimization of Millet Axial Flow Threshing and Separation Device Based on Discrete Element Method

机译:基于离散元件的小米轴流脱粒和分离装置的优化

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The difficulties of threshing and separation of millet have not been solved yet which has restricted the development of the millet industry because of the special biological structure and lack of professional agricultural machinery. In order to improve the quality of millet harvest and meet the market demand for millet, in this paper, according to the branching structure of millet, the millet earhead model was established by Discrete Element Method. Using virtual models of millet and device, the simulation tests were carried out whose results have shown that the threshing effect of the rasp-bar threshing element is better than that of the teeth threshing element. Then the rotor structure was optimized into a combined type of the rasp-bar and the teeth. A three-factor five-level quadratic orthogonal rotation combination test was carried out whose results have shown that the combined rotor can meet the requirements of millet harvest.
机译:尚未解决小米的脱粒和分离的困难,尚未解决,这限制了小米行业的发展,因为特殊的生物结构和缺乏专业的农业机械。 为了提高小米收获的质量,符合小米的市场需求,本文根据小米的分支结构,采用离散元素法建立了小米耳头模型。 使用小米和装置的虚拟模型,进行了模拟测试,其结果表明Rasp-Bar脱粒元件的脱粒效果优于齿脱粒元件的脱粒效果。 然后将转子结构优化成覆盖杆和齿的组合类型。 进行三因素五级二次正交旋转组合测试,其结果表明组合转子可以满足小米收获的要求。

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