Rotary filter system, a rotary filter device and a separation system

A rotary filter system for filtering out a filtrate from a fluid, comprising:

• a rotary filter device;
• and
• a drive device,
• the rotary filter device comprising a stationary filter housing and a filter unit rotatable about an axial direction, the filter housing having an inlet for the fluid, a first outlet for discharging the filtrate, and a second outlet for discharging a retentate, the filter unit arranged in the filter housing and being completely enclosed by the filter housing, the filter unit having a filter element delimiting a fluid space from a filtrate space, the filtrate capable of being discharged from the filtrate space through the first outlet, the filter unit further comprising a magnetically effective core designed in a disk-shaped or ring-shaped manner, and the drive device having a drive housing in which a stator is disposed to drive the rotation of the filter unit, the stator being a bearing and drive stator configured to interact with the magnetically effective core of the filter unit as an electromagnetic rotary drive, so that the filter unit is capable of being magnetically driven without contact and magnetically levitated with respect to the stator.