Patent ID: 6579041
Filing Date: 2003-06-17
Classification: B07B,B65G

Abstract:
A pre-screening element for use with pneumatic discharge systems for transport of powered material, said element comprising:a housing having an inlet and an outlet; a first vane array, having a plurality of strip-shaped first vanes arranged inside said housing and spaced apart with respect to a longitudinal axis of said housing, each individual vane of said plurality of first vanes being substantially parallel to other vanes of said first vane array and having a long edge facing said inlet; a second vane array, having a plurality of strip-shaped second vanes arranged inside said housing and spaced apart with respect to a longitudinal axis of said housing, each individual vane of said plurality of second vanes being substantially parallel to other vanes of said second vane array and having a long edge facing said inlet, a longitudinal axis of said first vanes being arranged at a 45 degree angle to a longitudinal axis of said second vanes.