PX 65EX Disc stack centrifuge0 pages

Medium-capacity disc stack centrifuge for fats and oils refining
PX 65EX
The Alfa Laval range of centrifuges for the vegetable and
animal oils refining industries is continuously modernized to
take advantage of developments in materials, mechanical
design and fluid dynamics. The PX 65EX is a medium-sized
machine in this range of centrifuges and is designed for use
in hazardous areas.
Applications
Continuous degumming, neutralizing, dewaxing and washing
of fatty oils, such as vegetable oils, lard, tallow and fish oil.
Performance
The table below shows nominal capacities. Actual throughputs
vary according to the type of oil and fat to be treated.
Degumming, neutralization, washing 8,500 kg/h
Dewaxing 4,200 kg/h
Standard design
The machine consists of a frame with a base that contains
a horizontal drive shaft, worm gear, lubricating oil bath and
hollow vertical bowl spindle. The bowl is fixed on top of the
spindle, inside the space formed by the upper part of the
frame, the solids collecting cover, and the frame hood. The
hood carries the liquid discharge system.
All parts in contact with the process liquid are made of stainless
steel.
The bowl is of the solids ejecting disc type, with an automatic
hydraulic operating system for “shooting”. The flameproof
standard electric motor is suitable for variable frequency drive.
The machine is designed for use in areas where an explosion
hazard normally does not occur, but - if it does - only rarely
and for a short period of time. The process medium must not
be flammable.
Design features
The PX 65EX is based on a unique, semi-hermetic design
concept. The hermetic, bottom-fed inlet ensures a gentle,
non-destructive acceleration of the feedstock up to full bowl
speed. The flow area for the feedstock has been increased to
minimize inlet pressure drop.
The outlets on the heavy and light phases are open, reducing
the pressure drop across the separator. The feed-pressure
requirement of the machine is therefore low.
PX 65EX complete with motor
The outlets are equipped with stationary paring devices for
removal of the different phases. The paring disc on the light
phase is fixed, while the paring tubes on the heavy phase are
adjustable.
By adjusting a positioner on the heavy phase outlet, the
operator can reduce or enlarge the paring diameter of the
paring tubes. This patented innovation makes it possible to
adjust the position of the separation interface during operation,
facilitating optimal separation.
With the working environment in mind, the PX 65EX is
designed to operate at low noise levels. This is achieved by
means of a rubber-damped bearing assembly, jacketed frame
and an outer bowl design engineered for low wind noise.
Standard equipment
Each PX 65EX comes complete with control unit, flameproof
electric motor, inlet and outlet connections, auxiliary equipment,
a spare parts kit and a set of tools.