The primary function of a water pump impeller is to lift and transfer water. Its specific roles are as follows:

Generating centrifugal force: As the impeller rotates, its vanes generate centrifugal force, which throws the water outward from the center, thereby enabling efficient water transport.

Influencing pump performance: The shape, size, and vane design and layout of the impeller directly determine the flow path and velocity of the water, thereby affecting the pump's head and flow rate. These are critical factors in pump performance.

Adapting to different requirements: Based on the water intake method, impellers are classified as either single-suction or double-suction. Single-suction impellers are suitable for low-flow applications due to their simple structure and lower cost, whereas double-suction impellers are designed for high-flow requirements, delivering greater water volume to meet the needs of high-power pumps and industrial applications.