Pumping the Un-pumpable
The use of one or more pairs of augers
combined with the transversely mounted power feed roll
results in product being stuffed into the augers and down
their tunnels into the positive displacement pump at a
controlled rate. The action of the augers and the power feed
roll results in the burping back of entrained air such that
it is a solid product stream that enters the positive
displacement pump. This is so important when the system is
being used for accurately batching to a vessel or blender.
The positive displacement pump that we supply on your
'Polar' will be selected to address both the process need
and your company's preference or we will use a pump that
exists in your plant provided the application will allow it.
In most cases, the PD pump is mounted on its own hinged
frame which simply rotates out of the way to allow access to
the augers for cleaning and then rotates back on re-assembly
to accurately mate with the 'Polar' front flange.
'Polar' with the necessary controls to allow you to simply
dial in the amount of product required at a specific vessel
or blender, initiate flow and walk away. In some cases, the
accuracy offered by counting the revolutions of the coupling
to the PD pump will be enough or we can build a Coriolis
type mass flowmeter into the system for refined, intelligent
and analytical accuracy.
When the pumping of blocks of product is desired, we can
supply your 'Polar' with its own staging conveyor and infeed
chute with block-sensing prox switches so that the operator
can simply load up enough product for a given period of time
and leave the system to operate itself in response to the
demands downstream and alert him when it's time to reload.
Lexan shrouds and safety prox switches are included, as
desired or required.