Drive device for screw centrifuges
AssigneeHiller GmbH
InventorGunter Haider
Life of this patent
Estimating the term…
Abstract
A drive device for screw centrifuges has a rotating drum driven by a drum driving motor, and a screw mounted coaxially in the drum and having a screw shaft. A screw drive motor for rotating the screw has a housing rotatably fixed to the drum and an electric torque motor rotatably fixed to the screw shaft and disconnected from the drum driving motor.
Claims8
A drive device for a screw centrifuge, the screw centrifuge comprising a drum and a screw mounted in the drum and extending coaxially therewith, the drive device comprising:
- a drum driving motor coupled to the drum so as to actuate the drum;
- and
- a screw driving motor comprising:
- a housing permanently fixed to the drum so as to rotate therewith, and
- a torque motor mounted in the housing and rotatably coupled to the screw, wherein the housing of the torque motor is an external rotor and has an inner cylindrical surface supporting a plurality of permanent magnets, the torque motor having a stator carrying a plurality of coils and mounted on and rotatably fixed to a screw shaft, whereas the screw shaft is rotatably fixed to the screw,
- wherein the torque and drum driving motors are disconnected from one another.
A drive device for a screw centrifuge, the screw centrifuge comprising a drum and a screw mounted in the drum and extending coaxially therewith, the drive device comprising:
- a drum driving motor coupled to the drum so as to actuate the drum:
- and
- a screw driving motor comprising;
- a housing permanently fixed to the drum so as to rotate therewith, and
- a torque motor mounted in the housing and rotatably coupled to the screw, wherein the screw has a screw shaft, the torque motor having a rotor fixed to the screw shaft and a stator fixed to the housing of the torque motor, wherein the rotor of the torque motor has a cylindrical inner carrying a plurality of permanent magnets, the stator of the torque motor carrying a plurality of coils, and
- wherein the torque and drum driving motors are disconnected from one another.
Dependencies are inferred from the claim text.