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Composition requirements and classification of water pump impellers
- Dec 02, 2017 -

The water pump impeller is mainly made of cast iron. The blades on the impeller play a major role. The size and shape of the single-suction impeller are closely related to the water pump performance. The water pump impeller can be divided into single-suction type and double suction type. Single-suction impeller is for single suction water uptake. Small flow water pump impeller is more this type. Double suction impeller fordouble suction water uptake. The impeller of large flow pump adopts double suction impeller.
The core part of the water pump impeller is the water pump, which can affect the working efficiency. Under specific working conditions, if the impeller design is not good, the hydraulic loss and clearance loss will be generated at the pump inlet and blade. Users must choose the professional water pump impeller manufacturer.


The enclosed impeller of the water pump impeller consists of the blade and the front and rear cover. The efficiency is relatively high, the manufacturing is more difficult. It is most used in the centrifugal pump. It is suitable for conveying the clear water, solution and other cleaning fluids with smaller viscosity without solid particles.
The semi-open impeller generally has two structures. One is the front semi-open type, consisting of the rear cover plate and the blade. The efficiency of this structure impeller is low, and the sealing ring with adjustable clearance is needed to improve the efficiency. The other is the rare semi-open type, which is composed of the front cover and the blade because the same seal ring can be applied to the closed water pump impeller. The efficiency is basically the same as the closed impeller.
In the single-suction impeller, the open impeller only has the blade and blade rib reinforcement and impeller without front and rear cover.
The number of open impeller blades is less, about 2 - 5. The water pump impeller has low efficiency and less application, which is mainly used to transport high viscosity liquid and paddle liquid.