Their advantage is that they can be integrated into both overpressured and underpressured transport. The sieve is in the shape of a drum that rotates and the speed of rotation can be controlled by a frequency converter. The sieve can be easily removed, cleaned, checked and replaced. The material gradually passes through the inlet neck and through the rotating sieve, while it is thrown through the sieve by centrifugal force, thus can break even small lumps. This movement is further supported by the rotating blades inside the sieve, which at the same time helps to clean it.
Particles that do not pass through the sieve (oversized product) are captured automatically in a small container. A magnetic separator can also be placed under the sieve, which, in case of a tear in the sieve, will catch metal particles, because even if the sieve is made of stainless steel, it is made of a special ferromagnetic stainless steel. With the right combination of rotor speed and sieve size and length, practically any screening result can be achieved.