Centrifugal pump classification:
1, according to the number of impeller to classification: 1), single pump: namely on the pump shaft is only one impeller;2), multi-stage pump, or on the pump shaft, there are two or more than two impeller at this time of the pump total head is the sum of n of impeller head.
2, according to the working pressure to classification: 1), low pressure pump, pressure below 100 m water column;2), intermediate pressure pump, pressure between 100 ~ 650 m water column;3), high-pressure pump, pressure is higher than 650 meters of water.
3, according to the impeller suction way classification: 1), unilateral feed water pump: also called single suction pump, the impeller is only one inlet;2), bilateral feed water pump: also called double suction pump, the impeller has an inlet on both sides.Its flow rate than single suction pump twice, can be approximately regarded as two single suction pump impeller together back to back.
4, press the pump shell to categories: 1), horizontal split-case pump: namely in through the axis of the horizontal plane has combined with the seam.2) pump, vertical joint surface: surface with axis vertical.
5, according to the pump shaft position to categories: 1), horizontal pump: pump shaft in horizontal position.2), vertical pump: the pump shaft is located in the vertical position.
6, according to the impeller out of the way classification: 1), volute pump: water out of the impeller, directly into the pump shell have a shape of a helix.2) and guide vane pump: water out of the impeller, into its set of guide vane outside, after enter the next level or into the outlet pipe.
7, according to the installation height of classification: 1), the type centrifugal pump, pump shaft below the pool pool surface absorption, start don't need water, can be started automatically.(2), suction centrifugal pump of the irrigation type centrifugal pump) : the pump shaft above the pool pool surface absorption.Before you start, need to be filled with water pump casing and suction pipe, and then drive motor, the high-speed rotating impeller, water by centrifugal force was thrown impeller, the impeller center form the negative pressure, absorb water in the pool under atmospheric pressure in the impeller, and by the high-speed rotating impeller, was thrown into the impeller pressure water pipe.
8, can also be classified according to utility, such as oil pump, water pump, condensate pump, ash discharge pump, circulating pump, etc.