The lobe pumps are
very efficient devices that are used in many different industries
such as: chemical, beverage, pulp and paper, food industry,
biotechnology, pharmaceutical and many other sectors. High sanitary
qualities, high efficiency and effectiveness, corrosion resistance,
greater reliability and many other unique characteristics is what
makes the rotary lobe pumps to be so widely used across
diverse industries. The rotary lobe pumps have the capability
to efficiently handle different kinds of fluids, and also slurries,
pastes and solids. They are non contacting devices and come with
large pumping chambers. The large pumping chambers give the lobe
pumps the capability to handle different kinds of liquids. When
the rotary lobe pump is wet, it offers self priming performance. The
gentle pumping action of the lobe pumps minimizes the degradation of
the product. These pumps also provide continuous reversible flows,
and have the capability to operate dry for some period of time. The
rotary lobe pumps range from industrial to sanitary lobe
pumps. The sanitary lobe pumps are classified further
depending on the service provided and the sanitary requirements. The
following text will highlight what are the main benefits of the
rotary lobe pumps and how they work.
Like the PC pumps, or
progressing cavity pumps, the rotary lobe pumps are classified
and belong to the pump family, known as positive displacement pumps.
Their compact design makes them to be widely used for high discharge
rates. The rotary lobe pumps are similar to the gear pumps
because the fluid flows inside the interior of the casing. But
however the rotary lobe pumps don't make any contact like the
gear pumps. Special external timing gears placed in the gearbox is
preventing lobe contact. The pump shaft support bearings are placed
in the gearbox, and because the bearings are out of the liquid that
is being pumped, the pressure is somehow limited by the bearings
location and the shaft deflection.
Because they belong to the
positive displacement pump family, the rotary lobe pump
operates by capturing certain amount of liquid from intake pump, and
then pushing the liquid through a discharge pump. How they operate
can be explained by four simple steps:
- First the fluid enters into the lobe pump. In order to transfer the liquid, the lobe pump uses helical lobes which are placed on parallel shafts. The shafts rotate by timing gears.
- Next, the fluid fills the interior and the cavities of the lobe pump. The liquid flows into the cavity and it is being trapped by the lobes of the pump as they rotate.
- The liquid then moves through the interior of the pump. But the liquid which is being pumped out doesn't move between the lobes.
- Finally, the lobes force the liquid out of the lobe pump under pressure. The amount of the fluid that is being pumped out can be different depending on the speed of the rotary lobe pump.
No comments:
Post a Comment