小型联合收获机旋风分离系统清选性能试验  

Cleaning Performance Experiment of Cyclone Separating System in Miniature Combine Harvester

作　　者：金鑫[1] 杜新武[1] 甘帮兴 姬江涛[1] 董祥[3] 王国新 

机构地区：[1]河南科技大学农业工程学院,洛阳471003 [2]现代农装科技股份有限公司,北京100083 [3]中国农业机械化科学研究院,北京100083

出　　处：《农业机械学报》2016年第5期99-105,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家国际科技合作专项(2013DFA71130);国家高技术研究发展计划(863计划)项目(2012AA10A502);河南科技大学青年基金项目(2015NQ004)

摘　　要：为了解决小型联合收获机清选装置谷糠分离不彻底和损失率较高的问题,利用高速摄影装置研究了吸杂风机转速、扬谷器风机转速和通气孔直径对清选性能的影响机理,以小麦籽粒、颖糠、茎秆混合物料为对象,利用研制的旋风分离系统试验台,选取气孔排布方式、通气孔直径、吸杂风机转速和扬谷器风机转速为试验因素,清洁率和损失率为试验指标,进行了单因素和多因素清选性能试验。单因素试验结果表明,气孔排布方式为螺旋形时,清选效果较好,随着吸杂风机转速、扬谷器风机转速和通气孔直径的增加,清洁率先上升后降低,损失率则逐渐增加,最大损失率不超过2%;正交试验表明:吸杂风机转速为1 900 r/min、扬谷器风机转速为1 100 r/min、通气孔直径为8 mm时,清洁率平均值大于93%,损失率平均值低于1.5%,损失率比优化前降低了25%。In order to solve the problems of halfway separating and high losing rate of the cyclone separation system,material movement analysis was done by using of high-speed photography. The wheat and mixture of stalk were chosen as the experiment objects,statistical experiment was carried out when diameter of air pores,rotating speed of the fan and rotating speed of the winnower were chosen as the experiment factors and cleaning rate and losing rate were chosen as the experiment indicators. Single factor experiment result showed that the arrangement of the air pores had effect on the cleaning ability.When the arrangement of the pores was spiral,the system performed better. The cleaning rate was increased first and went down later with the increasing of the rotating speed of the fan,winnower and the diameter of the air pores. The losing rate was increased with the increasing of the rotating speed of the fan,winnower and the diameter of the air pores,the value of losing rate was no more than 2%. Multifactor experiment result showed that when the rotating speed of the fan was 1 900 r / min,the rotating speed of the winnower was 1 100 r / min and the diameter of the air pores was 8 mm,the cleaning system worked better,the average value of losing rate was less than 1. 5%,which was reduced by 25%compared with the former.

关 键 词：小型联合收获机 旋风分离系统 优化 性能试验 高速摄影 

分 类 号：S225.3[农业科学—农业机械化工程]