摘要
为解决薏苡脱壳机籽粒含杂率和损失率偏高问题,设计一种振动筛清选装置,通过理论分析确定筛面尺寸、筛孔孔径范围和筛面倾角,采用离散元(DEM)模拟对基本参数进行优化。基于理论分析,以含杂率和损失率为指标,采用EDEM软件分别对筛面孔型、筛孔孔径、振动幅度、振动频率作单因素模拟试验。结合模拟试验结果,开展三因素二次回归正交旋转组合试验;基于响应曲面法对回归模型进行多目标优化,结果表明最优参数组合为:筛孔孔径5.463 mm、振动幅度7.626 mm、振动频率7.637 Hz,此时含杂率为1.054%,损失率为3.783%。将最优参数圆整后通过样机验证试验,测得薏苡含杂率为1.297%、损失率为3.562%,与优化参数一致,符合生产要求。
In order to solve the problem of high impurity content and loss rate of coix lachryma seed sheller,a vibrating screen cleaning device was designed,and the basic parameters were optimized by theoretical analysis and discrete element method(DEM)simulation.Screen size,screen aperture range and screen inclination were determined,according to theoretical analysis.Based on the theoretical analysis,single factor simulation tests were carried out for screen surface hole type,screen aperture,vibration amplitude and vibration frequency by using EDEM software with impurity content and loss rate as the indicators.Combined with the simulation test results,the three factor quadratic regression orthogonal rotation combination test was carried out.The regression model was optimized based on the response surface method.The results showed that the optimal parameter combination was as the followings,screen aperture was 5.463 mm,vibration amplitude was 7.626 mm,and vibration frequency was 7.637 Hz.At this time,the impurity rate was 1.054%,and the loss rate was 3.783%.The optimized parameters were rounded and verified by the prototype.The impurity rate and loss rate of coix were 1.297%and 3.562%,respectively,which were consistent with the optimized parameters and met the production requirements.
作者
周杨
秦代林
李奇强
聂均杉
罗惠中
张黎骅
ZHOU Yang;QIN Dailin;LI Qiqiang;NIE Junshan;LUO Huizhong;ZHANG Lihua(School of Mechanical and Electrical Engineering,Sichuan Agricultural University,Yaan Sichuan 625000,China)
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2022年第11期68-76,共9页
Journal of Northeast Agricultural University
基金
国家玉米产业体系专项(CARS-02)。
关键词
薏苡
振动筛清选装置
EDEM
响应曲面法
优化设计
coix
vibrating screen cleaning device
EDEM
response surface methodology
optimization design
