Magmo pumps are designed principally to handle high viscosity abrasive
sugar products, such as Molasses, Massecuite and
Magma. The ellipse and scraper principle it uses
was originally devised by the sugar industry itself
to overcome the problems associated with pumping
these difficult liquids.
The current design includes the best features from previous
pumps and successfully deals with the problems common to pumping
liquids such as massecuite.
Principle
of Operation
An elliptical shaped rotor rotates in a cylindrical
housing, and carries round with it chambers of fluid.
A hinged sealing arm, which follows the surface of
the rotor, scrapes off the liquid and directs it
up to the discharge port. As the chamber returns
to the suction port it is re-filled by further liquid
flowing in.
Bearing
and Sealing Arrangement
The
bearing and sealing arrangement has been designed
to deal with the wear and leakage problems associated
with high viscosity abrasive duties. The bearing
bushes are divided into an inner and outer portion.
The inner portion forms a general divider between the liquid
in the pump and the grease in the bearing. The outer portion,
which has longitudinal grooves forms the bearing.
Greasing the bearing is a flushing operation and consists of
introducing fresh grease at the outer end of the bearing
and displacing contaminated grease through a drain at
the inner end.
The drain valve is simply interlocked to the grease nipple
to ensure that both are open during greasing. This prevents
grease being forced into the main pumping chamber and contaminating
the bulk fluid.
This configuration of bearing ensures minimum contamination
of the bearing and ensures that the packing is sealing clean
grease and not abrasive fluid.
The suction branch has been designed to give the maximum possible
area and is approximately twice that of similar pumps. This
enables the massecuite to flow into the pump much more readily
thus avoiding cavitation and starvation.
The large suction port in addition to the simply shaped and
large pumping cavity, gives the magmo a good tolerance to foreign
matter often found in sugar products.
Magmo
Brochure PDF - Global Version (910KB,
6 pages)
Magmo
Brochure PDF - US Version (4,453KB,
6 pages)
