Patent ID: 7883457

Claim:
A helical conveyor centrifuge, such as a solid-bowl or sieve-bowl centrifuge, comprising: a rotatable drum; a rotatable screw disposed within the drum; a centrifuge drive for rotating the drum and the screw, the centrifuge drive configured to set a differential speed between drum and screw; wherein the centrifuge drive includes a first motor, a second motor, and a gearing arrangement disposed between the motors and also between the drum and the screw and which gearing arrangement includes a gearing arranged downstream of the motors and having a first gear, a second gear and a third gear stage; wherein the first and second gear stages include at least four shafts, and torques are one of introduced into and taken off from the first and second gear stages; wherein the first and second gear stages are disposed in a housing and are driven by at least three of the at least four shafts; and wherein the first motor feeds one of the torques into the housing and the first motor feeds another of the torques into the first gear stage via two of the at least four shafts.