Smooth threshing machine

The utility model discloses a wheat scourer and debranning machine which comprises a bracket, a working barrel consisting of an upper barrel with an inlet and a lower barrel with an outlet fixed on the bracket, of which the upper and lower barrels are connected through guide channel. A plurality of spiral plates are driven by electric motor are fixed along the axis in the upper and lower barrels. The blades of the plates in the upper barrel are composed of a plurality of steel blades and small grinding blades made by carborundum materials fixed on the steel blades. The blades of the plates in the lower barrel are composed of a plurality of radial large plates fixed spirally on the axle. The head and end large plates are connected with the two ends of the radial large plates fixed in the direction of the axis. The utility combines the functions of wheat scourer machine and wheat-debranning machine which is of good effect in clearing the ash, worm-eatten grain, attached mud and mineral ashes as well as separating the grain and the waste.