Patent ID: 6149083
Filing Date: 2000-11-21
Classification: B02C

Abstract:
A machine for separating different components of a composite material, comprising screen structure whose screen has entry and discharge faces; means for placing the composite material at the entry face of the screen; means for passing and pressing said composite material along and against said entry face of the screen for passage of a component thereof through said screen; elongate, rotary discharge structure having an entry end portion located at or near said entry face of the screen for receiving material that does not pass through the screen and having an elongate material discharging section for material that does not pass through the screen but that is part of said rotary discharge structure; said rotary discharge structure comprising dual, elongate, helical conveying screws having respective longitudinal helical flights that overlap and whose pitch is such as to provide a series of travelling compartments for accommodating said material that does not pass through the screen and for carrying it to said discharging section of said rotary discharge structure, said elongate material discharging section having dual conveying screws that substantially do not overlap.