What is the difference between a multistage centrifugal pump and a single stage pump?

Both the multistage centrifugal pump and the single stage centrifugal pump are centrifugal pumps. The pump can be connected in series to increase the lift. The lift is superimposed. If the impeller of the same size is used, the string is installed in the same pump. (The same shaft, the pump chamber cavity is separated, and the liquid passage is not connected. ) became a multi-stage pump, of course, a single-stage pump is relatively multi-stage pump.

Compared with the single-stage pump, the multi-stage centrifugal pump has the difference that the multi-stage pump has more than two impellers, which can absorb water and water in multiple stages in stages, thereby lifting the water to a high position, and the lift can be based on Increase or decrease the number of stages of the pump impeller. Multi-stage pumps are mainly used for mine drainage, urban and factory water supply, and few for agricultural irrigation. They are only suitable for high-lift, low-flow high mountain water to solve the difficulty of drinking water for humans and animals. Multi-stage high-heart pump The vertical and horizontal two-stage multi-stage centrifugal pump has two impellers connected in series on the pump shaft. It can achieve a higher lift than a single-stage centrifugal pump. Compared with reciprocating pumps such as piston pumps and diaphragm pumps, a large flow rate can also be pumped. The multi-stage centrifugal pump has high efficiency and can meet the needs of high lift and high flow conditions, and has been widely used in petrochemical, chemical, electric power, construction, fire protection and other industries.

Due to its particularity, multistage centrifugal pumps have different and higher technical requirements in terms of design, use and maintenance than single-stage centrifugal pumps. It is often the negligence or inconsistency of people in some details, which makes the abnormal wear, vibration, and axle hung frequently occur after the multi-stage centrifugal pump is put into use, which also causes downtime.