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The principle of energy-saving water pump: The impeller of the ultra high efficiency energy-saving water pump is the heart of the pump, which determines the flow rate, head, and efficiency of the pump. The impeller design of the high-efficiency energy-saving water pump starts from considering the minimum hydraulic loss, the highest efficiency, and the best timing performance. The three-dimensional flow theory is used in combination with CFD fluid dynamics calculation and optimization to find the optimal combination of different flows and geometric parameters, ensuring the high efficiency performance of the product from the design. All impellers have gone through dynamic and static balance and hydraulic balance, and compensated for axial thrust, resulting in lower noise, less axial force, longer bearing life, and higher hydraulic efficiency. The impeller adopts a double ring balance structure, which makes it possible to minimize the tolerance between the impeller and the pump volute shell. significantly reducing the reflux of liquid from the high-pressure zone to the low-pressure zone, The internal losses are less, thereby reducing energy consumption. By adopting a unique double volute shell design and manufacturing process, the efficiency of this pump is greatly improved compared to ordinary pumps. It can achieve the same operating parameters of the water pump, and the configured motor power is reduced by one specification compared to ordinary single-stage pumps,greatly saving energy consumption.