Page 31 - Eaton - Automatic self-cleaning family

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TECHNICAL INFORMATION
Tubular Backwashing Systems
Mechanically Cleaned Filters & Strainer
PressureTactics

Tubular backwashing systems
save you time and money
compared with disposable media
systems. The permanent media
4 of Eaton’s AFR, AFC, and F-Series Filtration Cycle
systems is “cleaned-in-place” Contaminated
using reverse flow technology. material flows up the
System maintenance is signifi- outside of the filter
cantly reduced and the cost of tubes, through the
landfill disposal is eliminated. filter media, and the
cleaned fluid is
6 How the AFR-Series Works expelled to the top
from inside the tube.
5 The simple, space-saving design Debris collects on
of the AFR-Series – with only a the outside surface
single moving part – is ideal for of the screen
3 3 the most demanding applications. forming a cake,
The unit features a circular
configuration of up to 8 tubes which facilitates
efficient filtration.
surrounding a central cleaning
valve. During the filtration phase,
filtrate travels from the inlet (1) to
2 the diverter chamber (2) and up
into the filter tubes (3). Cleaned
liquids flow to the upper chamber
(4) and out the large outlet near
1 the top of the unit (5).
8 All tubes can be in filtration mode
or the diverter mechanism can be
rotated so that each individual Backwashing
tube (6) can be backwashed while Cycle
the others remain in filtration
mode. During backwash,
triggered by time or
pressure differential,
the direction of the
During backwash, a diverter (7) flow is reversed in
inside the cleaning valve rotates the filter tube
to the tube to be cleaned. This causing contami-
closes the tube to the incoming nants on the media
process liquid and opens it to surface to become
the atmosphere via the drain line dislodged and
(8). The result causes outlet 7 6 allowing them to be
process liquid to flow in reverse purged downward
through the element, cleaning it 2 and out the drain
of contaminants and expelling valve.
them through the drain (8).