PF-S Volumetric Powder Feeder
|Feeds difficult powders
such as Cabosil®, TiO2 and other pigments without bridging or clogging
the hopper or the screw. Exclusive trough design defeats flooding
by dissipating kinetic energy of material stream at initial fill.
Agitator and screw overwind prevent material compaction or arching
over screw flights. Feeder disassembles easily for total cleaning,
eliminating contamination problems when changing materials, (Download
PDF) Proven ability to feed difficult powders PF-S Volumetric Powder
Feeder controls both flooding and clogging problems associated with
difficult-to-handle powders. Unique feeder trough effectively de-aerates
and contains the powder at the initial fill cycle to prevent flooding.
Independently driven agitator maintains optimum material conditioning
while screw speed can vary to control flow rate. Material does not
build up within the continuous screw tube liner, preventing binding
or erratic feed.
Power Wall Screw
Moves the materials that other volumetric
feeders can't budge. Pneumatic PowerWall™ diaphragms provide reliable
material flow. Pulse action is independent of feed rate, resulting
in wider turndown capability. Fully adjustable while operating,
to fine tune performance. Built to survive, with welded steel box
frame construction for long life. From gentle flutter to pounding
pulse THAYER "PW" Volumetric Feeders provide consistent, reliable
volumetric metering of anything from delicate products to the most
stubborn materials. Conventional flexible wall feeders have mechanical
devices which are only capable of slight hopper wall movement. They
just do not have the "kick" needed to move hard-to-handle materials.
PW Feeders have safe, reliable pneumatic PowerWall diaphragms which
can be adjusted from gentle flutter to pounding pulsation, to consistently
and reliably feed even the hardest-to-handle materials. Random wall
action prevents stable arch formation or material compaction, keeping
screw flights filled. Unique construction Elastomeric diaphragm
is driven by regulated air pressure, with independent cycling control
for each wall. Reinforced diaphragm sheet combines strength and
flexibility needed for long life. It is completely supported by
the steel housing, is inexpensive, and is easily replaced.
LRS-F Screw Feeders
Feed range up to 10lbs/hr @ 50 pcf
material. Exclusive Powder Feeder Technology Thayer Scale's feed
chamber is designed to eliminate common problems associated with
feeding powders. The feed chamber, with conditioning screw, assures
precise, reliable delivery of material to the feed screw. Eliminates
material build up, screw starvation and binding, assure steady uninterrupted
flow. Fast and Easy to Clean The LRF is designed for fast, easy
and thorough clean out. The feeder completely disassembles in less
than one minute. No tools or special skills are required. High quality,
rugged, stainless steel (material contact parts) construction assure
years of reliable, trouble free operation even in the most severe
| Handles a
wide range of material bulk densities at low to medium feed rates.
Unique low rate feed screw eleminates the need for old fashioned,
expensive, difficult to maintain twin screw designs. Patented "compound
flight" feed screw design works in conjunction with patented "U-trough"
feed chamber to eliminate common problems associated with feeding
powders such as screw starvation and binding. Exclusive Powder Feeder
technology Patented "compound flight" feed screw design works in conjunction
with Thayer Scale's "U-trough" feed chamber to eliminate common problems
associated with feeding powders such as screw starvation and binding.
Patented "U-trough" feed chamber with independently driven agitator
assures precies, reliable delivery of material to the feed screw.
Eliminates material build up, controls material aeration. Delivers
a steady, predictable flow. Fast and easy to clean PFM-S is designed
for fast, easy and thorough clean out. Feeder completely disassembles
in less then one minute. No tools or special skills are required.
With optional rotating hopper, feeder does not have to be removed
from production line in order to clean out or change screws. High
quality, rugged, stainless steel construction assures years of reliable,
trouble free operation even in the most severe industrial environments.
PFM-S Powder Feeder