谷物联合收割机清选筛筛面气流分布试验及分析  

Experiments and Analysis about Airflow Distribution over Oscillating Sieve of Grain Combine Harvester

作　　者：崔俊伟[1,2] 韩增德[1,2] 张子瑞[1,2] 郝付平[1,2] 甘帮兴[1,2] 苏天生[1] 乔晓东[1,2] 

机构地区：[1]中国农业机械化科学研究院,北京100083 [2]现代农装科技股份有限公司,北京100083

出　　处：《农业工程》2015年第2期1-4,14,共5页AGRICULTURAL ENGINEERING

基　　金：国家高技术研究发展计划(863计划)资助项目(项目编号:2012AA10A502)

摘　　要：针对轴流式谷物联合收割机脱粒方式的清选装置效率不足的问题,设计了双风机振动筛式清选装置,前风机采用3风道结构。试验时在清选筛筛面上设置若干个测量点,采用风速仪测定各个测量点处的气流速度值,分析筛面气流分布状况。试验结果表明:前风机从3风道吹出的气流大小及分布能满足纵向轴流式脱粒方式对清选装置气流分布的需要;后风机能有效辅助清选筛排出短茎秆,提高清选效果。In view of inadequate efficiency of cleaning device about axial flow type grain combine harvester that using threshing method, double fan oscillating screen type cleaning device was designed. And its front fan had three air ducts. During the ex- periment, a plurality of measuring points were set in the surface of cleaning sieve, flow velocity value of each measuring point was measured by anemometer. Airflow distribution of sieve surface was analyzed. Experiment results showed that the size and distribution of airflow from three air ducts of front fan could meet the needs about airflow distribution of cleaning device for longi- tudinal axial flow type threshing method. After fan could effectively assisted cleaning sieve discharge short stem, so as to im- prove the cleaning effect.

关 键 词：谷物联合收割机 双风机 风道 清选筛 气流分布 

分 类 号：S225.3[农业科学—农业机械化工程]