Screening Apparatus

A screening apparatus for screen waste material, wherein the waste material contains fine material and oversize material, said screening apparatus comprising:

• a frame;
• a feed conveyor mounted at one end of the frame;
• and
• a screen for accepting the waste material from the feed conveyor,
• wherein the screen is mounted on the frame about a pivot axis and comprises:
• a trough with a first side, a second side, a base and a top opening;
• and
• a plurality of driven elongate rotating members disposed in an arc along one side of the trough and along at least a portion of the base of the trough for causing circular or helical flow of the waste material within the trough, wherein each of said plurality of driven elongate rotating members has a shaft and a plurality of mutually parallel blades,
• wherein the trough further comprises a base opening for discharging the fine material and an oversize material outlet for discharging the oversize material;
• and
• wherein the screen is mounted on the frame such that the elongate rotating members are each independently perpendicular to the pivot axis.