风筛式清选装置中农业物料透筛概率的研究  

Research on the Passage Probability of Agricultural Materials on Air-and-screen Cleaning Mechanism

作　　者：张文斌[1] 张龙全[1] 孙少华[1,2] 李耀明[3] 

机构地区：[1]苏州市农业机械技术推广站,江苏苏州215128 [2]南京农业大学工学院,南京210095 [3]江苏大学现代农业装备与技术重点实验室,江苏镇江212013

出　　处：《农机化研究》2009年第8期50-53,共4页Journal of Agricultural Mechanization Research

摘　　要：建立了联合收割机风筛式清选装置单颗粒的透筛概率公式,指出了影响农业物料透筛的因素主要有物料颗粒在筛面上的跳动次数、下落倾角和相对粒度大小。采用高速摄像系统及数字图像处理技术对物料颗粒在清选装置中的透筛过程进行了试验研究,通过对试验结果进行极差分析,得出了振动筛主要工作参数与物料透筛概率之间的关系,为联合收割机清选装置的优化设计提供了依据。According to the working principle of the cleaning mechanism, the screen - penetrating probability formula of single particle was deduced in this article and then the major factors composed of the particle flounce frequency on screen surface, falling inclination and relative size were received. The high -speed video system and the image processing method were used to experimental study on the screening process of agricultural materials and the relationship between the major working parameters and materials passage probability was received through the range analysis. These results would provide references for the optimum design of cleaning mechanism.

关 键 词：清选装置 透筛概率 极差分析 图像处理 

分 类 号：S226.5[农业科学—农业机械化工程]