The present invention relates to a new and improved method of, and apparatus for, sorting fiber stock, especially for the fabrication of paper, wherein the fiber stock together with a liquid is moved by a rotor located within a housing or container, the throughput or throughpassing fiber stock being withdrawn from the housing through a screen or sieve.
As concerns the sorting apparatus of the present development, which is suitable for the performance of the method aspects, such embodies a housing or container equipped with a screen or sieve and a rotor operatively associated with such screen or sieve. This rotor is provided with blades or vanes which move along or over the screen.
There are known in this technology many different constructions of sorting apparatuses which function according to such general method aspects, and, for instance, serve for reclaiming fiber stock obtained from waste paper and for separation of surface-like or areal contaminats, such as, for instance, plastic foils, from the mass of waste paper. U.S. Pat. No. 3,942,728, granted Mar. 9, 1976 is illustrative of one such type of sorting apparatus or stock pulper.