What are the existing classifications of centrifugal pumps?

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There are many classification methods for centrifugal pumps, and several main classification methods are introduced.
1. Classification by impeller series
(1) There is only one impeller on the shaft of the single-stage centrifugal pump. Since the liquid has only one chance to increase energy in the pump, the pump pressure and head are lower.
(2) Multistage centrifugal pumps are equipped with two or more impellers on the same pump shaft. The impellers of the multistage pumps are generally single-suction, and the impellers of the class are designed to be double-suction. An impeller is a first stage. The more the number of stages, the higher the pressure and lift, and the greater the unbalanced axial force on the rotor. Multistage centrifugal pumps are mostly equipped with axial force balancing devices.
2. Classification by impeller suction method
(1) The single-suction centrifugal pump liquid flows from one side to the human impeller. The impeller of this pump is easy to manufacture and is widely used. Since the liquid is sucked from the impeller side, the pressure on both sides of the impeller is different, thereby generating axial thrust.
(2) The double suction centrifugal pump liquid flows into the impeller from both sides. Since the liquid flow on both sides of the impeller is symmetrical, no axial force is generated.
3. Classified by pump casing splitting method
(1) The split-open housing is split in a plane passing through the axis of the shaft. If the main shaft is horizontally arranged, it is called a horizontal open centrifugal pump; if the main shaft is a vertical structure, it is called a vertical open centrifugal pump.
(2) The split surfaces of the segmented pump casings are perpendicular to the main shaft, and the pump casings of each section are fastened with long bolts. Segmented centrifugal pumps are multistage pumps.
4. Classification by pump casing shape
(1) The volute pump is equipped with a centrifugal pump with a spiral pressurized water chamber, such as a commonly used single-suction cantilever centrifugal pump.
(2) Centrifugal pump A centrifugal pump equipped with a vane-type pressurized water chamber.
5. Sort by pump axis orientation
(1) The horizontal pump pump shaft is placed horizontally.
(2) The vertical pump shaft is perpendicular to the horizontal plane.
Centrifugal pumps can be divided into shielded pumps, magnetic pumps, self-priming pumps, pipeline pumps, submersible pumps, etc. according to their special structure.

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