The tumbler screening machines in Bruchköbel are used for fine and ultra-fine screening of dry goods. The circular motion of the tumbler screen transports the product spirally from the center to the outer wall of the tumbler screening machines.
Process steps for tumbler screening
- The product to be screened is placed centrally on the screen inserts. At the center of the screen insert, the tumbler screening machine acts like a gyratory screen. To be more precise, this means that the product is not thrown, but finds time to stratify according to the grain size. Sensitive and high-quality goods are protected to a high degree.
- The fine material migrates downwards through the coarse material, against the sieve and through the meshes. At the same time, the screenings are conveyed radially outwards and thus enter the area of greater vertical acceleration.
- The screenings mat is pulled apart by the increasing area available, so that the limit grains also have an opportunity to reach the screen. This increases the screening efficiency by 5-15 % compared to other screening systems