Destoner cum Aspirator is suitable for removing stones and other impurities from grains. The grains are separated based on their weight. This machine can be used for multiple grains by adjusting the air flow and the operating angle of the destoning deck. An aspirator is attached with this machine which is used for removing light weight impurities like dusk, husk and leaves. The air flow rate of the aspirator can be varied by adjusting the air inlet gate.