Shutter separation type maize thresher

The utility model relates to a shutter separation type maize thresher, which comprises a chain scraper conveyor, a grain threshing device, an eccentric oscillating screen, a vertical elevator, a dust collector, and a shutter type sloped slide way. Maize enters the grain threshing device through the chain scraper conveyor, separated grains enter a grain collecting barn 4, and the maize core is discharged to the oscillating screen; the grains in the grain collecting barn 4 can be elevated to the altitude by the vertical elevator, the grains enter the shutter type sloped slide way and are further separated, impurities are further separated by the dust collector and enter a cloth bag, and clean maize grains can be separated out. The grains separated by the oscillating screen then enter the grain collecting barn 4.