User guide

AccuMeter Controller Chapter 2: Functional Description 18
Ingredient Metering/Transport Auger Assemblies
Each metering auger assembly consists of a:
• Cast aluminum motor mount
• Cast aluminum feeder body
• Aluminum feeder tube
• Gearbox
• Inverter-duty AC drive motor
• Machined metering auger
The metering auger assembly accurately meters the material from the ingredient weigh hopper
at the calculated rate.
The mass flow weigh hopper design allows more range of the load cell to be used for actually
weighing the material and eliminates dynamic drive movement and vibrations from affecting
the load cell readings.
Figure 3: Metering Auger Components
Cascade Material Chute
The cascade material chute is a rectangular conduit in which all the metering augers discharge.
The materials are cascaded together and directed vertically down into the lower mass flow
weigh hopper. A clean out door is provided on the chute above the augers, so that any dust can
be blown out if it has collected.
Collection Hopper
The collection hopper is used when the feeding system is starve feeding the extruder, and the
extrusion feed rate is controller by the blender.
The hopper may also include “high” and “low” level switches to cycle the blender based on the
extruder process rate.
“Fixed Rate” mode
The lower mass flow weigh hopper may be replaced by a collection hopper with “high” and “low “
level switches on higher capacity blenders. This configuration controls the blending system rate
based on material level
rather than material weight. It is also possible to starve feed in this mode
without the need for another cross auger below the blender.