3.2 Operating principle
The Börger Bioselect is a purely mechanically operating separator
with a thick matter compressor.
The substrate that is to be separated is transported into the vessel-
like Bioselect by a feed pump or via a gravity feed with inlet pres-
sure. Inside the pipe casing, there is the pipe-shaped wedge wire
screen.
The liquid phase introduced here drains, almost without pressure,
by means of gravity through the slot openings in the screen to the
peripheral zones of the pipe casing and, finally, to the outlet, while
the solid phase is transported by the rotating brush auger inside
the wedge wire screen into the filter press channel of the com-
pactor unit where it is pressed and further liquid is drained off.
The DS content of the solid phase is regulated via the adjustable
pre-tension of the spring which acts upon the Multi Disc that func-
tions as a sealer and peeler. If the force of the accumulated thick
matter exceeds the force of the tension springs, then the thick
matter pushes the Multi Disc out of its closed position. The Multi
Disc, which is equipped with peeling tabs, peels the material
pushing outwards off the thick matter plug. The thick matter loos-
ened in this way is discharged downwards.
As soon as the pressure exerted by the thick matter on the Multi
Disc reduces, the tension springs, which are under pre-tension,
bring the Multi Disc back into its closed position.
Product Description
BA-RC40_EN, 17.01.2024www.boerger.de / www.boerger.com54
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