Our this kind of grain winnower apply series grains ,such as rice,wheat,corns,sorghum, millets, rapeseeds, sunflower seeds,
soybeans, coffee beans etc.
The grain after shelling by threshing machine from straw with some bad seeds (blighted worm eaten and moldy grains) and
the wastes (stalks,leaves and husks etc).it is mainly used to separate the bad seeds and wastes from grains to get clean grain
seed.It can be drive by electric drive or hand operate.