Device for separating impurities from fibre flakes

摘要

The invention relates to a device for separating dirt from fibre flakes which are conveyed pneumatically through a tube. The walls of the tube have orifices, through which the impurities can pass outwards. The wall is designed so that the cross-sectional area of the tube has a reduction and/or a widening in the region of the orifices. <IMAGE>