Backwash Drum Filter Type RTF
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Fully-automatic backwash filter with self-medium backwash without interruption of the filtration
process during backwashing.
Large solid particles are crushed in order to flush them out problem-free.
Backwash speed in the filter element up to 10 m/s.
medium
:
...................................................
temperature
:
°F
...................................................
main connection flanges according
to ANSI
:
inch
...................................................
backwash by
:
self-medium
circulatory capacity
:
gpm
filter element, type
:
filter fineness
:
special slotted sieve (AISI 317L)
special wire-cloth screen (AISI 304 / 316)
micron ...................................................
working pressure
design pressure
pressure loss with clean filter approx.
:
:
:
psi
psi
psi
filter drive
:
three-phase worm gear motor
with surface cooling
electric tension
:
V/HZ ……………………………………
weight empty approx.
:
lbs
...................................................
weight filled with water approx.
:
lbs
...................................................
filter housing
filter insert
:
:
steel, coated
stainless steel AISI 317L / 304
drive shaft
with wearing bushing
:
stainless steel AISI 316Ti
dimensions acc. to drawing
:
no.
...................................................
...................................................
……………………………………
……………………………………
materials
...................................................
AUTOMATIC CONTROL for Backwash Drum Filter Type RTF
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for filter backwash in intervals
—



working time-dependent with overriding differential pressure
- differential pressure
- adjustable
0 - 1,6 bar
- time-flushing interval
- adjustable
continuously - 10 hours
- flushing time
- adjustable
continuously - 10 hours


—
with potential free contact: filter in operation
with potential free contact: filter in flushing process (backwash valve open)
with potential free contact for collective fault indication in the central control station
After response of the collective fault indication the following
faults will be indicated at the DDS-control cabinet:
 either
faults in the filter operation
 either
faults at the electrical drive
 or
differential pressure too high

starting of the flushing process from the control room

release of the flushing process from the control room
consisting of:
butterfly valve, differential pressure gauge, electronic control unit, knitted pressure wiring and
assembly parts as well as backflushing lines, pre-mounted at the filter
butterfly valve
product contacting parts :
:
inch
..................................................
stainless steel
with electrical drive
voltage
:
V/Hz
nominal output
:
Watt
with integrated overload protection, limit switches, emergency hand-wheel and
position indication at site
including limiting loss of flushing water by mechanical special feature
dependent on the working pressure
differential pressure gauging, consisting of
differential pressure manometer
static pressure
measuring range
with 2 adjustable micro-switches
with integrated inlet-pressure indicator
incl. cocks + screwings
:
:
electronic control unit
housing
protective system
dimensions: height x width x depth
working voltage
control voltage
type of attachment
psi
psi
……………………………………
……………………………………
steel plate
NEMA 4
inch 15x24x8
V/Hz ……………………………………
24 V DC
wall-attachment at site
The flushing water quantity of the
Backwash Drum Filter is
:
gpm
..................................................
flushing water quantity per each
flushing process – duration 20 s
:
gal
..................................................
higher pressure stages and other materials deliverable on demand
manufacturer
:
DANGO & DIENENTHAL Inc.
Alliance, Ohio 44601,  330-829-7978