Rotating filter screen assembly

摘要

The invention pertains to a rotating filter screen assembly (20) comprising:
a rotating filter screen (22) having an upstream side and a downstream side;
a stationary cleaning chamber (24) mounted on the filter screen assembly (20), the cleaning chamber (24) having an open face adjacent the upstream side of the filter screen (22); and
a vacuum source connected to the cleaning chamber (24) and adapted to remove collected debris from the upstream side of the filter screen (22) as the filter screen rotates relative to the cleaning chamber (24). An aerodynamic baffle plate (30) offset from the downstream side of the filter screen (22) is proposed to divert air flow toward the downstream side of the filter screen so as to create an area of high pressure air at the open face of the cleaning chamber (24).