气吸振动式精播装置吸种气流场分析及其改进  

Analysis and Improvement of Air-suction Flow Field on Vibrational Air-suction Tray Seeder

作　　者：张石平[1] 陈进[2] 李耀明 

机构地区：[1]淮海工学院东港学院,江苏连云港222069 [2]江苏大学机械工程学院 [3]农业工程研究院,江苏镇江212013

出　　处：《农机化研究》2008年第3期61-65,共5页Journal of Agricultural Mechanization Research

摘　　要：首先计算了气吸振动式穴盘精密播种装置吸种部件吸种气流场最大马赫数,得到吸种气流场为不可压缩气体的定常流动;根据气体动力学点源理论及其迭加原理,得到了吸种气流场的组织结构分布及其相应的数学模型,对该播种装置的设计具有理论和实践指导意义。同时,从提高吸种部件吸种和固种能力应用的角度,对播种装置的机械结构提出了改进设计原则和方案。Maximal mach number Mrnax is firstly calculated for air-suction parts＇ air-suction flow field which is a stationary flow field on the vibrational air-suction tray seeder. According to the principle of point-source and its superposition, in the point of gas dynamics, we attained air-suction flow field distribution and its corresponding mathematical models that have theoretical and practical guiding significance. In order to advance sucting and fasting seeds abilities of air-suction parts, improved design of the seeder is advanced.

关 键 词：农业工程 吸种气流场 理论研究 吸种部件 数学模型 不可压缩流动 

分 类 号：S223.94[农业科学—农业机械化工程]