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Impellers in Pumps
Feb 22, 2017

Impellers are integral components in centrifugal pumps and vacuum pumps, among other pumping devices. Pump Impellers rely on Bernoulli's principle — which states that an increase in fluid velocity is accompanied by a decrease in pressure or potential energy (and vice versa) — to operate.

When fluid or gas media enters an impeller pump, it becomes trapped between the impeller vanes and the pump wall and increases in velocity as it moves from the impeller eye (center) toward the outside diameter of the Impellers. Once the media reaches a certain point nearest the outside diameter, it abruptly decreases in velocity and experiences an equal increase in pressure (according to Bernoulli's principle). The media becomes even more pressurized as it is discharged from the impeller and out of the pump orifice. Based on these principles of operation, it can be discerned that a pump impeller's rotational speed (affects velocity) and vane height (affects pressure and the possible formation of a vacuum) largely determine the pump's output pressure and flow.


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More information on Impellerhttp://www.agitator2000.com/product/Impeller.html