中文摘要：

为了实现中药材虎杖根系机械化脱土,设计了一种由击打辊、翻抛辊和栅板等组成的脱土装置。通过试验确定了辊指长度为40 mm,运用速度矢量投影定理确定了翻抛辊指布置的螺旋升角范围为60.5°-78.4°,应用Matlab软件采用描点拟合作图法得到击打辊与翻抛辊轴心的水平距离与物料尺寸呈幂函数关系,并确定了此距离范围为180-275 mm。性能试验表明,通过物料的随机振动、自身翻转、交替击打、逐层脱土等综合作用,装置的工作性能得到了明显提高。当击打辊转速为500 r/min、翻抛辊转速为240 r/min、两辊轴水平距离为230 mm时,脱净率为91.2%,生产率为1.35 t/h,满足虎杖根系药用生产要求。

英文摘要：

Knotweeds are important medicinal materials in China,which have good effect in restoring circulation,dispersing stasis and relieving cough. During the knotweeds root processing,they are hit many times omnidirectionally to separate it from the soil. In order to separate knotweeds from the soil in a mechanical way,a roots-soil separating device of knotweeds was designed,which consists of hitting roller,turning-throwing roller,grille,etc. In the experiment,it was found that finger length had influence on soil-divorcing. The range of spiral angle of turning-throwing roller finger pole which is 180 -275 mm,was set through velocity vector projection theorem. On the other hand,the relationship between the horizontal distance about axle centers of two rollers and the size of knotweeds was developed by fitting tool of Matlab software. The result showed that rate of soil-divorcing and efficiency were 91. 2% and1. 35 t / h,on condition that speed of hitting roller,turning-throwing roller and horizontal distance of two roller were 500 r / min,240 r / min and 230 mm, respectively, and therefore the device met the manufacturing requirements. It provided reference for research of soil-divorcing of crops.