Filterautomat Type DDF
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Fully-automatic backwash filter with dynamic filter-drum and 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 drum, external and internal basket
:
grey-cast with internal painting of
synthetic material of several components
grey-cast coated with epoxi-powder
filter insert
:
stainless steel AISI 317L / 316
drive shaft
with wearing bushing
:
stainless steel AISI 316Ti
external painting
:
epoxy resin min. 150 micron / RAL 6018
dimensions acc. to drawing
:
no.
...................................................
....................................................
…………………………………….
…………………………………….
materials
...................................................
AUTOMATIC CONTROL for Filterautomat Type DDF
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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
:
:
psi
psi
…………………………………….
…………………………………….
electronic control unit
housing
protective system
dimensions: height x width x depth
working voltage
control voltage
type of attachment
steel plate
Nema 4
inch 15x24x8
V/Hz .…………………………………….
24 V DC
wall-attachment at site
The flushing water quantity of the
Filterautomat is
:
gpm
....................................................
gal
....................................................
flushing water quantity per each
flushing process – duration 20 s
:
higher pressure stages and other materials deliverable on demand
manufacturer
:
DANGO & DIENENTHAL Inc.
Alliance, Ohio 44601,  330-829-7978