Lower support for single screw mixer

The lower support for single screw mixer of this invention is comprised of a support shaft rotatably secured in the bottom of a mixer having an inverted, truncated cone configuration. A connecting shaft is rotatably disposed within a bearing housing fixed to the lower end of the screw flight shaft disposed along the periphery of the mixer. The screw is attached to an orbit arm which rotates about the center axis of the mixer and through which the screw is rotated at relatively high speeds. Such relatively high speeds, however, are not, by virture of the bearing arrangement contained within the bearing housing fixed to the screw, imparted to the connecting shaft. The support shaft 20 and connecting shaft 36 are connected to one another by a pin arrangement which accommodates deflections imparted to the screw by the forces encountered during mixing. These shafts, however, rotate only at orbit speed, the connecting shaft moving only in response to movement of the orbit arm, not to the rotational speed of the screw itself.