窝眼筒式精选（分级）机 Eye socket cylinder cleaning (grading) machine

物料从主机架上部入口处进入窝眼滚筒内，旋转的窝眼滚筒上冲有尺寸精确的气泡式窝眼，小于窝眼内径的颗粒会嵌入窝眼内，随滚筒上行一定距离后落入中心U型料槽，而后被U型料槽内的螺旋搅龙排出设备；而较长或较大的颗粒则因无法嵌入窝眼内径而滞留在滚筒里，最终经由滚筒内的另一端出口排出。因此，窝眼筒精选机不仅可以去杂质，也可以当成更精准的分级机使用。

The material enters the socket drum from the upper entrance of the main frame, and the rotating socket drum is punched with a bubble socket with accurate size. The particles smaller than the inner diameter of the socket will be embedded in the socket, which will fall into the central U-shaped trough after a certain distance up the drum, and then be discharged by the spiral auger in the U-shaped trough; the longer or larger particles will stay in the roll because they cannot be embedded in the inner diameter of the socket In the cylinder, it is finally discharged through the outlet at the other end of the cylinder. Therefore, the machine can not only remove impurities, but also be used as a more accurate classifier.