玉米秸秆茎叶分离装置的设计与试验

【目的】设计玉米秸秆茎叶分离机械，为农业废弃物玉米秸秆的资源化利用提供技术支持。【方法】基于压扁碾搓法原理，设计了一种由压辊机构、剥辊机构、清理机构等组成的茎叶分离装置，以实现对玉米秸秆的茎叶分离，并采用含水率为21.68%的玉米秸秆对分离装置参数进行了正交试验优选。【结果】影响秸秆茎叶分离率的主次因素依次是压辊间隙、剥辊速比和压辊转速。玉米秸秆茎叶分离的优选方案为：压辊间隙8 mm，剥辊速比1.6，压辊转速200 r/min。在此条件下，玉米秸秆的茎叶分离率可达到92.9%。【结论】该装置可用于玉米秸秆的茎叶分离，有效提高了分离效果。

Design and experiment on stem-leaf separator for corn straw

【Objective】The study was done to design a machine for stem-leaf separation of corn straw,which can provide technical support for comprehensive utilization of agricultural wastes-corn straw.【Method】To utilize the leaf,bark and pith of corn straw separately and efficiently,a kind of stem-leaf separator,consisting of press roller mechanism,separation roller mechanism,cleaning mechanism,etc.,was designed based on flatten-robbed method to realize stem-leaf separation of corn straw.Parameters of the separator were optimized by orthogonal experiment of stem-leaf separation with corn straw with a water content of 21.68%.【Result】The results showed that the sequence of factors which influence separation efficiency was:gap between press rollers,linear speed ratio between separation rollers and rotate speed of press rollers.The optimal scheme for stem-leaf separation of corn straw was:rotate speed of press rollers,200 r/min;gap between press rollers,8 mm;linear speed ratio between separation rollers,1.6.Under this condition,the separation rate was 92.9%.【Conclusion】This machine can be used to separate corn straw into stems and leaves,and has improved separation efficiency.