Download - 3 Centrifugal Pump Types Three.ppt
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Centrifugal Pump Centrifugal Pump TypesTypes
Prof. Dr. Eng. Maher HigazyProf. Dr. Eng. Maher Higazy
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Centrifugal Pump Types
As mentioned before, there are three types of pump impellers used for single stage pumps; they are closed, semi-open and open impellers. The double suction impellers are closed type as well as the multi-stage pumps.
Three types of pump impellers
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Different types of blades and impellers
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Different Impellers and Casing for Centrifugal Pump
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(a)In pumps with a single volute, radial hydraulic forces do not balance
(b)In a twin or double-volute pump radial hydraulic forces balance
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The casing may be horizontally or axial split casing or radial split casing.
For multi-stage pumps, the axial split casing is used as in the following figure-HORIZONTALLY SPLIT MULTI-STAGECASING
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10 STAGE CENTRIFUGAL PUMP- with balancing Drum.
Impellers are facing the same direction
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Double suction pump
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Prof. Maher Higazy 10Two-Stage Submersible Lift Pump
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(a) Shallow Well (b) Deep Well
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Axial cross section of a single-stage, single-suction, split-case,
Side-suction, side-discharge centrifugal pump
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Two-stage pump having single-suction impeller facing opposite direction
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Four blade impeller for mixed flow high speed pump
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