A cleaning apparatus is provided for cleaning crops, such as potatoes or beets, with adhering particles of soil and the like. The apparatus comprises a charging and or supply hopper with an opening at its underside from which the crops enter for cleaning； a housing with a cleaning region, wherein the crops are cleaned； a rotating screen drum rotating about an axis of rotation wherein the crops are cleaned； wherein the screen drum is arranged in the cleaning region； the axis of rotation of the rotating screen drum is inclined at an acute angle.
