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Position: Home > Articles > Simulation of Soybean Thresher Cyclone Separating and Cleaning System Transactions of the Chinese Society for Agricultural Machinery 2014 (1) 80-87

基于Fluent的大豆脱粒机旋风分离器模拟与优化

作  者：
赵学观;徐丽明;高连兴;李献奇
单  位：
中国农业大学农业部土壤-机器-植物系统技术重点实验室;沈阳农业大学工程学院
关键词：
大豆;旋风分离器;谷物清选;仿真
摘  要：
为了对大豆脱粒过程中未脱净荚果进行有效的分选、回收并进行二次脱粒,在已设计的有吊桶旋风分离器基础上,利用Fluent软件对有、无吊桶2种模型进行对比试验,结果显示2种模型压降无明显差异,有吊桶旋风分离器分离效率更高。建立了吊桶长度、吊桶直径两因素同逃逸时间、损失率及压降的数学关系模型,模拟试验结果表明:吊桶直径主要影响螺旋上升气流速度,吊桶长度主要影响入口区域气流场分布,确定吊桶最佳参数为长度94 mm,直径为196 mm,以该参数改进的模型进行试验验证,结果表明损失率降低为2.2%。
译  名：
Simulation of Soybean Thresher Cyclone Separating and Cleaning System
作  者：
Zhao Xueguan;Xu Liming;Gao Lianxing;Li Xianqi;Key Laboratory of Soil-Machine-Plant System Technology,MOA,China Agricultural University;College of Engineering,Shenyang Agricultural University;
关键词：
Soybean Cyclone separator Grain cleaning Simulation
摘  要：
In order to separate,recycle and second thresh the no cleaned pod effectively,the Fluent software was used for optimization analysis of two different models of cyclone separator with or without bucket. The simulation results showed that there was no significant difference in pressure drop between the two models,cyclone with bucket had higher separation efficiency. Effect of bucket diameter and length on the capture time was not significant. The mathematical relationship model was established between bucket length,diameter and escape time,loss rate and pressure drop. Bucket diameter mainly affected velocity of spiral flow,and bucket length mainly affected the air flow distribution of entrance field. The best parameters of bucket were determined,i. e.,the bucket length was 94 mm and diameter was 196 mm. Test was carried out to verify the improved model based on these parameters,and results showed that the loss rate was reduced to 2. 2%.

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