Difference between peristaltic pump and centrifugal pump
Answers
Nearly all pumps fall within these two categories, with centrifugal being the most common. However, positive displacement pumps come in a wider variety such as gear, lobe, peristaltic, screw, and many other types of pumps.
The most common type among centrifugal pump is the radial flow pump. These centrifugal pumps use a rotating impeller to create a vacuum in order to move fluid. The pump’s impeller rotates within the housing and reduces pressure at the inlet. This motion then drives fluid to the outside of the pump’s housing, which increases the pressure enough to send it out the discharge.
There is also the axial flow centrifugal pump which uses a curved propeller-shaped impeller, whereas the impeller on a radial flow centrifugal pump looks more like a fan. Axial flow pumps move fluid by drawing fluid into their axis and using the impeller to send fluid out on the other side of the pump.
Positive displacement pumps draw fluid into a compartment at the inlet and move it to an outlet for discharge, most typically using a rotary, reciprocating, or diaphragm method to move fluid. The main difference between these types of pumps and centrifugal is that positive displacement pumps will move fluid at the same speed regardless of the pressure on the inlet end and centrifugal pumps will not.
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