TrueWeigh Continous Blenders0 pages

TPBX041-0114

GRAVIMETRIC BLENDERS

TRUEWEIGH CONTINUOUS BLENDERS

CONTINUOUS
BLENDING IN
EXACT, PRECISE
RATIOS
TrueWeigh Continuous Blenders provide extremely precise loss-inweight dispensing of dry solids of various size and bulk densities
including pellet, regrind, micro-bead and powder. These highly
consistent and repeatable blenders are ideally suited to extrusion
processes that require perfect blend homogeneity and extremely
accurate dosing.
Designed for extrusion rates to 3,000 lb/hr {1,360 kg/hr}, TWB
Blenders are available with up to six component positions.

Model TWB07-4

PERFECT MULTI-COMPONENT HOMOGENOUS BLEND
TrueWeigh Continuous Gravimetric
Blenders consist of a series of loss-inweight material hoppers symmetrically
located above a cascade mixing chamber
to simultaneously and homogeneously
meter all components within a recipe.
The system incorporates an extruder
throat-mounted weigh hopper which can
be supplied as part of the blender or
sourced independently. The weigh hopper measures the blended material feed
rate and sends that information to the
PLC control for monitoring and reporting.
All component hopper-feeder assemblies
are mounted on individual single-point
contact load cells and are supplied with
quick-release, variable speed synchronous motors and configured to accept a
range of interchangeable feed augers
designed to accommodate specific
material shape and flow characteristics.
Feeders are inclined for more consistent
output and to accommodate fast material
drain-out.

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Accuracy to +/- 0.5% of set point
The PLC-based control holds each component to +/- 0.5% of its set point. The
control uses a proprietary learning algorithm that simultaneously monitors and
adjusts each feeder for material flow and bulk density changes.

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Homogenously blend dissimilar materials
Easily and accurately blend virgin pellets, free flowing powders, regrinds, granules,
flakes, concentrates and additives. Each component is simultaneously metered
through material-specific feed augers. A conical cascade static mixer integrates
the materials and eliminates separation caused by ledge or step type cascades.

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Add-on extrusion yield control
The blender PLC readily communicates with an extruder through an optional drive
card to provide yield control. Add an encoder and haul-off drive control card and
you can control line speed and product weight-per-length to +/- 0.5% of target set
point.

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