| 摘要 |
PURPOSE: A multi-stage water pump is provided to obtain high output without increasing the number of laminated impellers and to reduce power consumption, thereby obtain high output efficiency and energy efficiency. CONSTITUTION: A multi-stage water pump comprises a case(130), a driving shaft(111), and impellers(120). An installation space is formed inside the case, and the case includes a fluid inlet(131) and a fluid outlet(150). The driving shaft is connected to a driving motor(110) and arranged inside the installation space. The impellers are installed separately along a longitudinal direction of the driving shaft. Diameters of the impellers are increased from the impellers adjacent to the fluid inlet to the impellers adjacent to the fluid outlet. |
