玉米秸秆茎叶分离装置的设计与试验

Design and experiment on stem-leaf separator for corn straw

【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8mm,剥辊速比1.6,压辊转速200r/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。

[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. [Meth- od] 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 roll- ers. 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 condi- tion, 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.