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Conveying
transferring pre-weighed batches to a receiver. They are best Besides straight-line operation, AMC’s are available in a
used to deliver product from storage or a sack tip station to a multitude of ‘round the corner’ configurations. Other than free
weigh hopper or a vessel with a high level switch. For example, flowing powders such as acrylics, flour and carbon black, they
they are ideally suited for maintaining a constant head of can also convey difficult materials such as titanium dioxide. It
material in packing machine hoppers by gently filling to the high addition, they have no problem with granules, flakes or chips.
level control rather than dumping pulsed batches. Additionally, A major advantage is that degradation to the material is almost
because the in-flight product is constant, flexible spiral negligible with this type of conveyor. This is because it creates a
conveyors will give very accurate, highly repeatable batches if moving current of air in which the material is borne, similar to
controlled by a simple time switch. the effect of a vacuum or pneumatic system. However, unlike
Although flexible spiral conveyors need to run full of product, vacuum or pneumatic systems, the aero-mechanical conveyor
they can however be emptied at the end of a batch operation or does not need a cyclone or filter to separate the product from
at the end of a shift by the removal of an end bung and running the air – this is a seriously important advantage not only saving
the conveyor in reverse at reduced speed if necessary. capital cost but also reducing maintenance and eliminating
environmental issues too: because the air carrying the material is
Aero-Mechanical Conveyors
Aero-Mechanical Conveyors (AMC’s) are
the choice for the total transfer of
products over distances of 3 to 25
INTELLIGENT DRIVE SYSTEMS, WORLDWIDE SERVICES
metres a rates of up to 120 tonnes/hr
efficiently, cleanly and without the need
for an air filtration system.
The AMC has the alternate and more
descriptive name of a ‘rope and disk’
conveyor and comprises several evenly
spaced polyurethane disks attached to a
wire rope. The rope and disks travel in a
continuous loop fashion at a consistent
high speed within parallel steel tubes. At
each end there are enclosed housings
within which the rope assembly runs
from one tube to the other around
specially designed sprockets. One of the
sprockets drives the rope and disks
while the other provides tension to the
rope. The high speed of the disks
produces an air stream that fluidizes and
INTELLIGENTLY CONTROL THE POWER APPLIED
entrains product in an airflow until it is
centrifugally ejected at the outlet. This
method of conveying facilitates
Our muscles have many qualities; they enable our actions to be gentle
and slow or quick and well-aimed whatever is appropriate. They can be
capacities up to 120 tonnes / hour with
trusted to work for long periods and – most important – to safely coor-
low energy requirements, minimal
dinate and control the forces applied. Drives designed by NORD DRI-
product degradation and virtually no
VESYSTEMS are the same, producing the power precisely as programmed.
An innovative drive technology allows for variable settings and ensures
separation of mixtures. AMC’s are
the optimal control and efficiency of all performance components. With
effectively ‘mechanical vacuum NORD intelligent system solutions the power is YOURS.
conveying’ and should not be confused
with Drag-Link type conveyors which
Our major objective is added BENEFITS to our CUSTOMERS. As one of the
leading drive specialists NORD provides high technology and high quality
are slow-moving, heavy duty devices in
products at short notice. Our global support network together with our
which cast iron disks are, often, linked Reducers/Motors System configurations extensive experience enables us to assist our customers to achieve success
with rods or chains and where the
Electronic drive Automation in their markets.
product is scraped along inside the tube.
components
Over the years, the aero-mechanical
Global services
conveyor has proven to be a cost
efficient method of conveying
PARTNERS IN MOTION
materials, dust-free and without the
need for filtration. They offer total
batch transfer, operation at any angle
(including vertical) without any loss of
NORD GEAR LTD.
DRIVESYSTEMS
capacity, contaminant free delivery and
can be supplied with access panels for
easy cleaning.
www.nord.com · Abingdon, Oxfordshire OX14 3NB · Phone: +44-1235-534404 · info@nord-uk.com
www.solidsandbulk.co.uk August 2007 • Solids & Bulk Handling 31
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