纵轴流复脱分离装置设计与试验

Development and Performance Experiments on Axial-rethreshing with Axial Feeding

为了研究切流与纵轴流组合式脱粒分离装置的作业性能,在纵轴流脱粒分离清选试验台上,对钉齿滚筒、矩形齿滚筒和钉齿-短纹杆板齿组合式滚筒进行了台架试验,比较其夹带损失率、未脱净率、脱出物轴向分布规律、含杂率和功耗。试验结果表明,3种复脱滚筒在脱粒小麦时夹带损失率小,脱净率高;相对钉齿滚筒及矩形齿滚筒而言,钉齿-短纹杆板齿组合式滚筒脱出物轴向分布均匀,含杂率和功耗较低。

In order to analyze the working performance of the rethreshing separation unit combined with a tangential-threshing and an axial threshing,including losing rate,distribution of the mixture along the axial of cylinder,the rate of impurity and power consumption,three threshing drums,i.e.,the spike tooth,the rectangular tooth or the spike-short-rasp-bar tooth,were developed and test on the rig of the axial-threshing separation performance with axial feeding.The results show that three drums have low losing rate.Compared with the spike tooth and the rectangular tooth,the drum with spike tooth and short-rasp-bar tooth has uniformal distribution of the mixture along the axial of cylinder,less impurity contents and lower power consumption while threshing wheat.