Alfa Laval MMPX 303SGP-11, Manual

Page: 26 / 181

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3.2 Design and function 3 Separator Basics
26
3.2.4 Separating function
Liquid flow
Separation takes place in the separator bowl to
which unseparated oil is fed through the inlet pipe
(201). The oil is led by the distributor (T) towards
the periphery of the bowl.
When the unseparated oil reaches the slots of the
distributor, it will rise through the channels formed
by the disc stack (G) where it is evenly distributed
into the disc stack.
The oil is continuously separated from water and
sludge as it will flow towards the center of the
bowl. When the cleaned oil leaves the disc stack
it rises upwards and enters the paring chamber.
From there it is pumped by the paring disc (F) and
leaves the bowl through the outlet (220).
Separated sludge and water move towards the
bowl periphery. In purification separated water
rises along the outside of the disc stack, passes
from the top disc channels over the gravity disc
(K) and leaves the bowl through a small hole in
the heavy phase cover (W) into the common
sludge and water outlet (221) of the separator.
Heavier impurities are collected in the sludge
space (H) outside the disc stack and are
discharged at intervals through the sludge ports
(L).
G
0
1
1
23
31
F Paring disc
G Disc stack
H Sludge space
I Top disc
K Gravity disc
L Sludge ports
R Bowl body
S Bowl hood
T Distributor
U Paring chamber
cover
V Guiding cone
W Heavy phase cover
201 Oil inlet
206 Water seal and
displacement water
inlet
220 Oil outlet
221 Water/sludge outlet
372 Opening water inlet
373 Bowl closing water
377 Overflow
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