RF Baghouse, Models RFT, RFW, and RFWH
4
Involute Scroll Inlet Operation
During normal operation of a RF with an involute scroll
inlet, dust-laden air enters the dirty-air inlet. The involute
scroll inlet creates a cyclonic action and a baffle just
above the inlet prevents the incoming dust from directly
contacting the filter bags. The cyclonic action and baffle
forces the heaver dust particles to fall directly into the
hopper. The lighter dust particles will then pass through
air straightening veins that evenly distribute the air and
entrained dust into the filter bag section.
After entering the collector, the light dust collects on the
outside surface of each filter bag forming a dust cake.
Clean, filtered air passes through the filter bags, into the
clean-air plenum, and discharges through the clean-air
outlet.
The RF cleaning system automatically cleans each
bag at least once every four minutes. During the filter
cleaning cycle, a solid-state timer energizes a solenoid
valve and controls the open and close time of the
diaphragm valve. An air reservoir stores pressurized air
which the diaphragm valve directs through the manifold
arms and into the filter bags forcing the collected dust
to fall into the hopper where it is discharged into drums,
rotary valve, screw conveyor, or pneumatic conveying
system.
High Inlet Operation
During normal operation of a RF with a high inlet, dust-
laden air enters the bag section of the collector. The
high inlet section contains baffles that prevent direct
impingement of the incoming dust on the filter bags,
forcing the dust to slow down and change direction
before entering the filter bag section. The incoming
dust laden air travels downward into the hopper. This
downward flow path assists the cleaning system to
force dislodged dust into the hopper preventing re-
entrainment of the dust on adjacent filter bags.
dirty-air
inlet
scroll inlet
clean-air
outlet
filter bags
hopper
filter bag
access door
RFW only
flow straightener
baffles
dirty-air
inlet
high
inlet
clean-air
outlet
hopper
filter bags
Models RFT/RFW
Model RFWH
Collector Operation
