High-efficient corn thresher with low rotation speed

The utility model relates to a high-efficient corn thresher with low rotation speed, which belongs to the technical field of agricultural machinery. A movable pulley is fixedly arranged on a centre shaft, and the surfaces on both sides of the movable pulley are provided with impellers perpendicular to the movable pulley; teasing needles which are evenly distributed in a radial shape are arranged on the external edge of the movable pulley; both sides of the movable pulley are provided with fixed pulleys, and the side faces of the fixed pulleys are provided with longitudinal barrier slots. When the utility model is in working, the centre shaft rotates in a low speed; owing to the barrier slots arranged on the fixed pulleys, when the movable pulley rotates continuously, the ear of corn can move down automatically; gaps between the movable pulley and the fixed pulleys become smaller and smaller from top to bottom; corn kernels are released from the corn pulps by the impellers of the movable pulley. By the utility model, the breakage rate of the corn kernels in the threshing process is very low, and the pulp and the kernels are separated thoroughly without splash; the integrality of the corn pulp can be ensured, and the corn pulp are convenient for the further utilization; the thresher works in a low rotation speed with low failure rate and low noise, and the power consumption is small; the impellers can release the kernels accurately and conveniently with high work efficiency.