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| Centrifugal Pump |
Pumps are commonly introduced in
industries for a smooth operation in transferring the fluids from one area to
another. Many types of pump are used for various purposes. Centrifugal pumps are multi-purpose pumps suitable in a range of
different applications demanding reliable and cost-effective functioning. These
pumps are stared for its simplicity and use centrifugal force to move fluids
through piping systems.
Basically, the Centrifugal Pump is built around an impeller, in series with radial
vanes of different shapes and curvatures, revolving in a rounded casing. Fluid
enters at the "eye" or axis of rotation and discharges more or less
radially into a chamber at a higher pressure corresponding to the sum of the
centrifugal force of rotation and the energy is given to the fluid by the
vanes. A Close coupled pump, like centrifugal pumps, utilizes an impeller
driven through a motor shaft adaptor that is attached directly to the electric
drive motor. The head of the close couple pump is supported with a rear housing
bolted directly to motor flange.
A centrifugal pump converts primer
mover's energy into kinetic energy and subsequently this kinetic energy is
converted into pressure energy of the fluid being pumped. It possesses an
impeller with a central eye through which the fluid enters the pump. The high
speed impeller accelerates the fluid radial outward from the pump chasing. This
increases the fluid pressure and thus gets pushed out of the pump into a pipe
to continue its flow.
This flexible and strong centrifugal pump
though needs regular maintenance as it faces problems of corrosion and
overheating due to low flow.
These pumps are one of the most commonly
used pumps and Centrifugal Pumps
manufacturer India make it available in a wide variety of nature, provisions
and materials of construction. Some of the premier types of centrifugal pumps
used in manufacturing and other industries are close couple, end-suction and
self-priming pumps.
In end-suction pumps the fluid flows
directly into the impeller and its design forms 90° angle between inlet and
outlet. End suction pumps are employed for diverse applications- Industrial
liquid transfer, industrial pressure boosting, water supply, HVAC (heating,
ventilation and air-conditioning) and irrigation.
A self-priming pump is designed with a
large volute that enables it to re-prime itself under lift conditions. This
arrangement eliminates the requirement of suction as well as discharge check
valves.
Self priming Centrifugal Pumps are the best alternative for applications that
require priming, especially in an unsupervised environment of dewatering
application. Essentially, closed coupled
pumps are extensively used for chemical processes, deionization of water and
treatment of wastewater. Further, these pumps are used widely in commercial,
residential and municipal applications where pump has to deal with trash and
other debris without clogging.
Self priming pumps have extensive design
range to serve broad spectrum of applications. Today, many metallurgical
options and configurations of shaft seal are available in the market to finely
cater to specific service.

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