6
Operating Manual for
FAN Press Screw Separator PSS 1.1-300
S
3
FUNCTION DESCRIPTION
The FAN press screw separator serves for separating pumpable slurry (solid-liquid mixtures with rela-
tively low solid matter content and no foreign bodies such as metal parts, stones, wood or rags) into sol-
id and liquid (thin slurry) fractions. As a compact device, it combines the functions of
two
separators,
specifically the functions of a screen and a press.
The
FAN press screw separator is designed for sustained operation outdoors. It operates unimpaired in
a temperature range of 0-40 °C; in event of freezing temperatures, it must be ensured that the separator
is cleaned completely each time before being taken out of operation. Conditions of high humidity (e.g.
locations near to the coast) and extreme sunlight require special designs for the gears and motors. Con-
sult the manufacturer concerning such designs.
When selecting the feed pump and the overflow line, make certain that the separator is operated under
no pressure.
In the inflow area, the mixture is drained of water via gravity inside the screen. The interior auger trans-
ports the pre-drained material horizontally toward the solid outlet. Along the last section of the transport
path, the auger presses out additional liquid, which escapes the separator through the screen as thin
slurry. The required contact pressure is applied to the escaping solid by a system consisting of a cap
loaded by a weighted lever.
The solid-liquid separation depends entirely on the type of slurry. For example, the extent to which water
can be drained differs greatly between dairy cattle, beef cattle and pig slurry. Users of the
FAN Separa-
tor have with this machine many options for optimizing the separating result.
The throughput can be increased be selecting a larger screen gap width.
The residual moisture in the separated solid decreases as the contact pressure of the output regu-
lator is increased.
The solid matter content in the separated liquid can be reduced with a smaller screen gap width.
The degree of solid separation is improved by smaller screen gap widths.
More information about the configuration options can be found in section 7
“
Initial Startup
”
.
Fig. 3-1 Function description
Medium to
Transport and pressing auger
screen element
Solid phase
Liquid phase
Contact pressure
