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For other uses of “pump” or “pumps”, see Pump (disambiguation).
A small, electrically powered pump
A large, electrically driven pump (electropump) for waterworks near the Hengsteysee, Germany
Horizontally mounted lobe pump (right) shown with its electric motor (left) and drive-shaft bearing (middle)
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.[1]
Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work by moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power, come in many sizes, from microscopic for use in medical applications to large industrial pumps.
Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis.
Single stage pump – When in a casing only one impeller is revolving then it is called single stage pump.
Double/ Multi stage pump – When in a casing two or more than two impellers are revolving then it is called double/ multi stage pump.
In biology, many different types of chemical and bio-mechanical pumps have evolved, and biomimicry is sometimes used in developing new types of mechanical pumps.
