Page 32 - Bluebook Sereco english

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Screens

GRS Drum screen

he rotating drum screen for micro- toward the outside; in this way it car- Strengths
T screening GRS type is installed on ries out an energetic counter-wash-
small and medium civil or industrial ing which is further improved by the
water treatment plants. It is particu- jet of pressurized water by means of • FINE SCREENING,
larly suitable for the solid-liquid sep- nozzles. FROM 0.25 mm.
aration in the wastewater treatment On request, in order to optimize the • HIGH SPECIFIC FLOWS.
for food, textile, tanning, petrolchem- equipment operation, it is possible to
• USABLE ALSO FOR FOOD
ical industries and municipal treat- adjust the speed according to water
INDUSTRIES.
ment. For industrial purposes, it is used quality, with the addition of an invert-
• SUITABLE ALSO FOR COLLOIDAL
in the recyclable materials recovery. er in the electric control panel or
AND VERY VISCOUS
This screen consists of a press-bend- replacing the standard gear motor
SUBSTANCES.
ed metal sheet, a revolving cylinder or with a variable speed drive. The pro-
drum made of wedge wire bars, a tection against overloads is ensured by
scraping blade, a washing nozzle sys- standard dynamometric devices or, on
tem and a gear motor. The inlet water, request, by electronic load limiting
lapping on the drum screening bars, devices. The standard equipment is
deposits the suspended solids in it. designed for installation on tank. On
These solids are carried over by rota- request, a model complete with spe-
tion friction to the scraping blade cific drain chamber and support legs
which conveys them into a specific can be supplied.
container. The blade exerts a suitable With regard to particular applications,
pressure on the drum by means of an it is possible to have the GRSC supplied
adjustable counterweight system; the complete with a screw conveyor, inte-
bigger sizes are provided with a gral with the structure, which collects
motorized system for the blade clean- the screened material and send it away
ing. The water already filtered falls while compacting it.
down by gravity and runs again into The standard construction is in stain-
the revolving drum from the inside less steel.