农田沙化土壤改良机设计及其搅拌效果数值模拟  

Design of farmland sandy soil improvement machine and numerical simulation of its mixing effect

作　　者：李滨[1] 逄孟宇 Li Bin;Pang Mengyu(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin,150040,China)

机构地区：[1]东北林业大学机电工程学院,哈尔滨市150040

出　　处：《中国农机化学报》2024年第9期285-290,共6页Journal of Chinese Agricultural Mechanization

基　　金：哈尔滨市应用技术研究与开发项目(留学回国创业人才A类)(2017RALXJ011)。

摘　　要：土壤沙化问题是目前我国制约农业发展的因素之一。设计一款农田沙化土壤改良机,利用SolidWorks建立其整机模型,针对其关键部件搅拌筒建立离散元模型,并使用EDEM软件进行离散元分析,以搅拌轴旋转速度、旋转方向和搅拌时长为试验因素,以土壤和改良液混合均匀程度为优化指标,分析改良装置搅拌筒工作情况。通过正交仿真试验结果得出:最优参数为搅拌架旋转速度40 r/min、搅拌时间15 s、两搅拌架转动方向相反时,其搅拌均匀度为92.61%,变异系数为0.0749。The problem of soil desertification is one of the factors restricting the development of agriculture in China.A farmland desertification soil improvement machine was designed.The whole machine model was established by SolidWorks,and the discrete element model was established for the key component mixing cylinder.The EDEM software was used for discrete element analysis.The rotation speed,rotation direction and stirring time of the mixing shaft were used as experimental factors,and the mixing uniformity of soil and improved liquid was used as the optimization index to analyze the working condition of the mixing cylinder of the improved device.Through the orthogonal simulation test results,it is concluded that when the stirring frame rotation speed is 40 r/min,the stirring time is 15 s,and the rotation direction of the two stirring frames is opposite,the stirring uniformity is 92.61%,and the coefficient of variation is 0.0749,which is the optimal parameter.

关 键 词：沙化土壤 改良机 搅拌效果 离散元分析 均匀度 

分 类 号：S156[农业科学—土壤学]