Multi-shaft preparation unit for plastic melts

A multi-shaft preparation unit for plastic melts, the multi-shaft preparation unit comprising:

• an extruder housing that has an enclosed treatment chamber for plastic melts in an interior thereof, and has at least one rotor body shaft mounted rotatably in the treatment chamber with at least two receiving grooves, in each of which a satellite screw is mounted;
• a drive unit in which outside the extruder housing, between a drive motor and the treatment chamber, a gearing unit is arranged, which is connected to drive shaft sections of the rotor body shaft and the satellite screws led out of the treatment chamber of the extruder housing;
• and
• a separating device arranged between the extruder housing and the gearing unit, the separating device provided for decoupling a flow of fluid and/or heat emanating from the treatment chamber, through which the respective drive shaft sections of the rotor body shaft and the satellite screws pass,
• wherein the drive shaft sections of the rotor body shaft and the satellite screws pass through at least one cavity in the separating device, and
• wherein the drive shaft ends of the rotor body shaft and the satellite screws are each guided through holes in a sealing and guide body on the rotor body shaft, which sealing and guide body closes off the rear part of the treatment chamber.