WINNOWING MACHINE

An improved winnowing machine with a forced air supply causing chaff and product portions such as kernel materials to flow through a transit tube. The forced air enters near the bottom of the tube. The product portions enter at approximately the middle part of the transit tube. Chaff exits near the top of the transit tube. The chaff and kernels take a circuitous route within the transit tube causing the chaff to remain longer in the tube thereby increasing the ability to separate the chaff from the kernel while at the same time creating a more compact winnowing machine suitable for small scaleoperations. A preferred embodiment includes the circuitous spinning route member having a plurality of paddles in a ninety degree orientation with respect to the length of the transit tube. The paddles revolve around a central shaft in a spiral stair-step configuration and the central shaft rotated by a motor. 本发明公开的风选机通过使用鼓风机提供的气流在转移管道中分离谷壳和谷仁。空气气流由转移管道的底部进入。待风选物料从转移管道的中部进入。谷壳从靠近转移管道顶部的出口排出。谷壳和谷仁在转移管道内的曲形路径中移动，增加了停留时间，提