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4.1
Design and function
4
Separator basics
4.1.5
Sludge discharge function
Sludge is discharged through a number of ports
(L) in the bowl wall. Between discharges these
ports are covered by the sliding bowl bottom (M),
which forms an internal bottom in the separating
space of the bowl. The sliding bowl bottom is
pressed upwards against a sealing ring (m) by
force of the closing water underneath.
The sliding bowl bottom is operated hydraulically
by means of operating water supplied to
the discharge mechanism from an external
freshwater line. Opening water is supplied
directly to the operating system in the bowl while
closing water is supplied to the built-in closing
water tank, and pumped to the operating system
through the bowl spindle.
The opening and closing only takes a fraction
of a second, therefore the discharge volume
is limited to a certain percentage of the bowl
volume. This action is achieved by the closing
water filling space above the upper distributor
ring and pushing the sliding bowl bottom
upwards. Simultaneously, the water in the
chamber below the operating slide is drained off
through the nozzles in the bowl body.
G0112411
Sludge discharge mechanism
L. Sludge ports
M. Sliding bowl bottom
m. Sealing ring
N. Upper distributing ring
O. Operating slide
P.
Lower distributing ring
R. Bowl body
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