5XZ-10型比重式种子分选机气流孔板布置优化  

Arrangement Optimization of Airflow Orifice Plates of 5XZ-10 Specific Gravity Seed Sorter

作　　者：程丽娟 何强龙 官鑫 刘建明 伍永福[2] CHENG Lijuan;HE Qianglong;GUAN Xin;LIU Jianming;WU Yongfu(School of Control Engineering,Xinjiang Institute of Engineering,Urumqi Xinjiang 830022,China;School of Energy and Environment,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China;Xinjiang Industrial Vocational and Technical College,Urumqi Xinjiang 830022,China;Jiuquan Ok Seed Machinery Co.,Ltd.,Jiuquan Gansu 735000,China)

机构地区：[1]新疆工程学院控制工程学院,新疆乌鲁木齐830022 [2]内蒙古科技大学能源与环境学院,内蒙古包头014010 [3]新疆工业职业技术学院,新疆乌鲁木齐830022 [4]酒泉奥凯种子机械股份有限公司,甘肃酒泉735000

出　　处：《农业工程》2024年第3期65-72,共8页AGRICULTURAL ENGINEERING

基　　金：新疆维吾尔自治区自然科学基金项目(2022D01B138);新疆维吾尔自治区大学生创新创业训练计划项目(S202210994013)。

摘　　要：种子的好坏,直接影响粮食产量,优良种子的筛选对于国家粮食安全问题具有重大意义。针对5XZ-10型比重式种子分选机筛面气流分布不均的问题进行单因素试验。利用Fluent软件,采用数值模拟与试验相结合的方法对比重式分选机气室流场进行了求解。为了简化计算量,引入多孔介质模型代替气流孔板。利用数值拟合求解了多孔介质模型参数,建立气室几何模型并验证了模型的可行性。将气流孔板布置高度比例系数α作为单因素变量,得到分选机空气流场及空气动力场的分布特点。为获得合理的筛面气流,讨论了不同的气流孔板高度对气室出口界面气流稳定性、均匀性的影响,发现当α=0.84时,气室出口界面气流稳定性、均匀性较好。确定气流孔板合理的安装高度530 mm,为比重式种子分选机优化设计提供了试验数据及理论依据。Quality of seeds directly affects grain production,and screening of excellent seeds is of great significance to national food se-curity.A univariate test was carried out on problem of uneven airflow distribution on sieve surface of 5XZ-10 specific gravity seed sort-er.Using Fluent software,method of combining numerical simulation and experiment was used to solve flow field of heavy separator.To simplify amount of calculation,a porous media model was introduced instead of an airflow orifice plate.Parameters of porous medium model were solved by numerical fitting,geometric model of air chamber was established and feasibility of model was verified.Height scale coefficient of airflow orifice plate arrangement wasαas a univariate to obtain distribution characteristics of airflow field and aerodynamic field of sorter.To obtain a reasonable airflow of sieve surface,effect of different airflow orifice heights on air-flow stability and uniformity of air chamber outlet interface was discussed,and it was found that whenα=0.84,airflow stability and uni-formity of air chamber outlet interface was good.Reasonable installation height of airflow orifice plate was determined to be 530 mm,which provided experimental data and a theoretical basis for optimal design of a specific gravity seed sorter.

关 键 词：种子分选机 流场分布 气流孔板 数值模拟 种业装备 比重分选设备 

分 类 号：S223[农业科学—农业机械化工程]