Specifications

DESCRIPTION AND OPERATION Document No. DER01120
Effective Date 25 May 07 Page 3 of 9
MAJOR COMPONENTS
Major components of the centrifuge (Figure 1120-2) consist of the rotating assembly, gearbox
drive assembly, fluid coupling, electrical control box, 50 HP electric motor, vibration switch, case,
base assembly, and skid. The following paragraphs describe these components.
Figure 1120-2 Gearbox Drive (GBD) Centrifuge Major Components Location
Rotating Assembly
The rotating assembly consists of a cylindrically shaped stainless steel bowl, conveyor assembly,
and related components. The bowl is a straight stainless steel cylinder with openings at both ends
but with a conical head at the solids discharge end and a flat liquid bowl head at the opposite end.
The bowl ends are supported by ball bearings having grease fittings to permit periodic lubrication.
Bowl Assembly
The liquid bowl head at the liquid discharge end contains movable weirs that permit manual
adjustment of the liquid level remaining in the bowl during rotation. Index marks are provided on
the weirs to facilitate precise adjustment. The liquid level or pond depth, along with other factors,
helps determine the liquid content of the discharged solids. The tapered bowl extension at the
solids end forms an upward sloping beach, where solids collect and are continuously discharged
through the solids discharge outlet. The end of the bowl extension is closed by the solid bowl
head, which has four openings to permit discharge of solids. Replaceable wear inserts installed in
the solid bowl head protect the openings from wear.