SSP Rotary Lobe Pumps
What you want from a pump is really quite simple: that it should perform dependably to specification, year after year, with minimum
maintenance. The right pump is the one you can virtually forget about
once it’s installed.
So it pays to choose carefully - especially as a pump’s operational
importance is out of all proportion to the investment involved.
If you’re specifying rotary lobe pumps, that really means choosing
the SSP brand. SSP is unique in combining 50 years of practical
application experience with the financial, research and high-end
manufacturing resources of a world class engineering organisation.
However large or small your application, whatever you’re pumping and
whatever the requirements and regulatory framework of your industry
sector, the chances are we’ve been there before. So we can give
you the benefit of what we’ve already learned. So you always
get the right pump, whether it’s an off the shelf product or a
specifically engineered solution.
Principle of Operation
SSP ranges of Rotary Lobe pumps are of conventional design operating with no internal contacting parts
in the pump head. The pumping principle is explained with reference to the diagram below, which shows
the displacement of fluid from pump inlet to outlet. The rotors are driven by a gear train in the pump
gearbox providing accurate synchronisation or timing of the rotors. The rotors contra-rotate within the
pump head carrying fluid through the pump, in the cavities formed between the dwell of the rotor and the
interior of the rotorcase.
In hydraulic terms, the motion of the counter rotating rotors creates a partial vacuum that allows
atmospheric pressure or other external pressures to force fluid into the pump chamber. As the rotors
rotate an expanding cavity is formed which is filled with fluid. As the rotors separate, each dwell forms a
cavity. The meshing of the rotor causes a diminishing cavity with the fluid being displaced into the outlet
port.
No one knows the technology better.
As the world’s leading dedicated
rotary lobe pump manufacturer, our
expertise in this specialist field is
unrivalled. We trace our roots right
back to the originators of the technology,
which we’ve been progressively
refining and developing ever since.
SSP Pumps is a brand of Alfa Laval
Pumps Ltd., part of the global Alfa
Laval group known throughout the
world for its uncompromised
manufacturing excellence and
exemplary customer service.
It is this vast breadth and depth of
knowledge and experience that we
place at your disposal when it comes
to the critical task of selecting the
right pump for your requirement.
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