横轴流双滚筒脱粒分离装置设计与试验

详细论述了一种横轴流双滚筒脱粒分离装置的总体结构、脱粒滚筒与凹板的设计方案,脱粒滚筒采用短纹杆-板齿结构,分离滚筒采用带螺旋叶片钉齿滚筒结构.室内台架试验表明,该装置可适合较大喂入量、难脱水稻脱粒分离,具有脱净率高、夹带损失率小、脱出物中含杂率小且分布均匀等特点.田间性能测试表明:当收获单产11 625 kg/hm~2的梗稻,喂入量为4.32 kg/s时,该机总损失率为1.94%、脱粒损失率0.89%、破碎率0.84%、含杂率0.20%.各项技术指标均达到了设计要求.

Experiment of Threshing and Separating Unit with Double Axial Cylinder

The total structure of a new transverse axial flow threshing and separating unit with double cylinder was described in detail, along with the design scheme of the threshing cylinder and concave. The frontal threshing device was made with the structure of short-rasp-bar, plate teeth, the small distance grid concave, and the posterior threshing device was composed with the structure of the spike tooth cylinder with helical blades and the large distance grid concave. The bench test showed that this device was applied for the large capacity and the difficult threshing rice. It also has the following advantages as higher threshing, lower cleaning loss, the well-proportioned distribution of threshed stuff, and the little trash content, and so on. The field experiment showed that the total loss rate is 1.94%, the threshing loss rate is 0.89%, the broken rate is 0.84%, and the ration of trash content is 0.20% when the feed rate is 4.32kg/s. Various technical indexes have reached to the national standard.