BFS/BFH Metering Feeders0 pages

METERING FEEDERS
TPBM008-0408
B F S A N D B F H AT- T H E - T H R OAT M O D E L S
BFS model
ECONOMICAL
FEEDING OF
COLORANTS,
ADDITIVES
Conair feeders provide injection molders and extruders with a
versatile, economical way to volumetrically meter colorants or
other additives into the flow of virgin material directly at the
throat of the processing machine.
BFH model
By metering additives directly at the throat, greater savings in
material inventory and colorant can be achieved over traditional pre-colored or centrally blended material schemes.
PRECISE METERING REDUCES COLORANT COSTS
Each feeder is equipped with a throat
adapter that fits between the material
supply hopper and the processing
machine throat. The feeder connects
easily to the adapter allowing additives
to be metered by an auger into the
flow of material as it passes through
the adapter. Up to two feeders may be
mounted on one throat adapter.
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For injection machines the feeder’s
digital timer controls the metering
motor during screw recovery. This supplies a consistent volume of additive in
proportion to the flow of material into
the machine throat.
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For extruders the feeder meters
continuously. The speed control of
the extrusion models includes a voltage tracking circuit to slave the
feeder metering rate to the speed of
the extruder.
Model for low/high throughput
Model BFS and BFH feeders feature a compact size for metering additives
to machines down to 0.01 gram per second or up to 160 lb. per hour.
Model BFH provides high throughput metering up to 100 grams per second
or 800 lb per hour.
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Injection or extrusion control
The precision injection control provides on-demand metering, based on a signal
from the press. The extrusion control is designed to operate continuously with
the extruder.
E a s y, n o - t o o l s cl e a n o u t
BFH models have removable supply hoppers and augers to allow fast clean-out
for color changes. The standard BFS model has a stationary hopper, a removable
supply hopper option is available.
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Digital setpoint accuracy
Easy-to-set thumbwheel switches provide digital accuracy for speed and time
rate control.
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Optional low level alarm
Small add-on module offers audible and visual warnings if the additive level
drops below the hopper sight glass.