期刊论文

Separation Efficiency Analysis on Rice Extractions in the Cyclone Cleaning Segregating Cartridge

中文

中国农业科技导报

1008-0864

2017

19

7

55-65

10.13304/j.nykjdb.2016.749

2016NK2120:湖南省重点研发计划项目 2014GK1056:湖南省战略性新型产业科技攻关计划 51175173:国家自然科学基金

本校为第一机构

旋风分离清选适用于小型水稻联合收割机,在保证清选损失率小的前提下,降低含杂率是设计的关键。为探寻分离筒中气流和籽粒两相流动规律,选取水稻脱出物中谷粒、颖壳、瘪谷、杂穗等为研究对象,利用Fluent软件对4LZ-0.8型水稻联合收割机清选系统中的旋风分离清选装置进行三维数值仿真模拟,分析不同工况下清选模型中各组分籽粒的运动轨迹,计算其分离效率。并以低损试验条件下谷粒清洁率为主目标进行台架试验,对最优模型进行了试验验证,评价扬谷轮转速、吸杂风机转速和分离组件距入口高度三因素与装置清选性能之间的影响关系,通过建立回归模型,进行多目标优化求解,得到较优参数组合:当扬谷轮转速为1...

Cyclone cleaning device is often used in small rice combine harvester. Its key design is to reduce the impurity rate on the premise of assuring lower cleaning loss percentage. In order to explore the 2 phase flow regulation between airstream and kernel in the segregating cartridge, three-dimensional numerical simulation of cyclone separation and cleaning device was carried out using Fluent software to analyze grain,rice hull,immature grain and miscellaneous grain in 4LZ-0.8 rice combine harvester cleaning system. The particle trajectories of each mixture in the model were selected and the sepa...