The invention relates to a device (1) for cleaning and sieving bulbous plants, tuberous plants and root crops, the device comprising:- a frame (3,4)- a number of rollers (2) arranged parallel to each other and at a distance from each other in the frame and- drive means (5,6) for rotatingly driving at least one of the rollerswherein at least one roller comprises a continuous shaft (7) and a spiral (10) arranged around the continuous shaft,wherein the spiral (10) is rotatable around the continuous shaft (7), wherein the spiral is driven rotatingly by the drive means (5,6) and the spiral has a rotation speed differing from that of the continuous shaft.
