The Wyma Horizontal Hedgehog is used to remove dirt, roots and other vegetation from potatoes. As the potaoes make contact with the pintle belt, dirt, roots and other vegetation is separated from the produce and drop to the base of the rubber fingers. The potatoes come into contact with the powered roller sweep and are directed towards the out-feed chute. On the other hand, dirt, debris and other waste material are caught within the pintle rollers and pass under the sweep. This waste is deposited on a conveyor and directed towards a waste bin or central waste colleciton point.
The rubber fingers are set on a continuous belt. This is in contract to a belt built with individual rows of rubber fingers joined together. Consquently, no cracks exist for dirt and debris to be caught in the joints, prolonging the life of the belt.
The gap between the powered sweep roller and the top of the belt is adjustable to allow larger material or objects to be removed from the main produce flow.
The powered sweep roller is also equipped with a weight balancing mechanism. Some of the weight can be shifted to the out-feed end of the hedgehog to prevent the roller from applying undue pressure on the debris and the belt. This prevents stones and other unwanted debris from becoming lodged into the belt, maximising its effectiveness and durability.