Sifting device used as sieve comprises box oscillated by a drive as basic oscillation system having horizontal transversal carriers and additional oscillation system fixed on the box and having second horizontal transversal carriers

摘要

Sifting device comprises a sieve box oscillated by a drive (4) as a basic oscillation system having first horizontal transversal carriers (1.3), and an additional oscillation system fixed on the sieve box and having second horizontal transversal carriers (2.3) which are arranged parallel to the first transversal carriers between two first transversal carriers and connected to these by extending sieve lining strips (3). In the case of two successive transversal carriers, the transversal carrier located nearer to the feeding side is positioned higher than the following transversal carrier located nearer to the discharge side. The sifting device is provided with at least two sections, and the difference in height between the centers of gravity of two successive transversal carriers is greater in the section on the feeding side than in the section on the discharge side. The second transversal carriers are connected to each other at their end regions via a receiving part ( 2.4) fixed on the sieve box to produce the additional oscillation system which pivots about a pendulum axis. Preferred Features: The receiving part is positioned on the sieve box via spring elements (5e), preferably leaf springs.