Pump is a device that is used to increase the pressure energy of a fluid. A liquid pump generally works to lift a liquid from a lower level to a higher level.
(i) Positive displacement Pump
(a) Reciprocating Pump
Positive displacement in reciprocating pump is done by moving its piston back and forth or up and down.
(b) Rotary Pump
(ii) Dynamic Pressure Pump
The pressure of the fluid is obtained by this pump by its motion. these are of two types
(a) Centrifuged Pump
In a centrifugal pump, the lifting column of liquid is obtained by centrifugal force.