Specifications

DESCRIPTION AND OPERATION Document No. DER01122
Effective Date 30 Aug 07 Page 3 of 6
MAJOR COMPONENTS
Major components of the centrifuge (Figure 1122-2) consist of the rotating assembly, bowl and
conveyor drive motors, control system, purge system, vibration switch, and case and base. The
following paragraphs describe these components.
Figure 1122-2 Major Components
Rotating Assembly
The rotating assembly consists of a cylindrically shaped, high-strength carbon steel bowl,
conveyor assembly, gearbox, and related components. The bowl consists of a straight steel
cylinder with a conical section at the solid discharge end and a flat liquid bowl head at the
opposite end. Openings are provided at both ends to permit liquid and solid discharges. The bowl
ends are supported by roller bearings having grease fittings to facilitate periodic lubrication.
Bowl Assembly
The liquid bowl head at the liquid discharge end contains movable weir plates that permit manual
adjustment of the liquid level remaining in the bowl during rotation. Notched locking plates
adjacent to the weir plates facilitate precise adjustment. The liquid level or pond depth, along with
other factors, helps determine the liquid content of the discharged solids. The conical bowl at the
solid discharge end forms an upward sloping beach, where solids collect and are continuously
discharged through the solid discharge ports. Replaceable inserts line the solid discharge ports to
minimize the rate of wear due to abrasive action.