Sieve device and sieve shaft for a sieve device

Abstract

Screening device (1) for separating solid mixtures as feed material according to particle size, in particular for separating difficult-to-screen, moist and / or sticky and / or coiling material, such as household and commercial waste, mixed construction waste, rubble, excavated soil, stockpile material from landfill remediation, alternative fuels, coiled goods and / or film and / or wire goods, biowaste, compost, waste wood, wood, green waste, with a plurality of screen shafts (4, 5) arranged downstream of the feed material in a conveying direction, wherein each screen shaft (4, 5) rotates about its own axis of rotation and wherein the feed material is transported on the screen shafts (4, 5) in the conveying direction according to the roller conveyor principle and is separated into a fine-grained fraction and a coarse-grained fraction, characterized in that the screen shafts (4, 5) are designed as conical screen shafts with laterally projecting screen blades (6) which, when the screen shafts (4, 5) rotate form cone-shaped bodies of revolution,wherein the screen shafts (4, 5) are arranged in the conveying direction of the feed material with alternating directions and wherein, when the screen shafts (4, 5) rotate, screen gaps (9) are formed between the screen blades (6) of adjacent screen shafts (4, 5) for separating the feed material.