Specifications

153
Fig.14.2 - Parts of a Pump
Fig.14.3 - Cut section of pump casing
Fig.14.1 - Impeller types
14.3 Working of centrifugal pump
The pump is filled with liquid and the impeller is rotated. The heart of any centrifugal pump
is the impeller. Fluid enters the impeller through the “eye” as shown in Fig 14.4 and is “centrifuged”
(hence the name) to the impeller periphery, with assistance from the impeller vanes. Impeller
designs can be open or closed, with one or many vanes, or no vanes at all (a disc or a set of
discs-or a variation of a disc-like surface-sloping toward the higher radius).