| 摘要 |
An apparatus and method for rasising liquids from one level to a higher level by means of a centrifugal pump operating in air for minimum drag, is described. A sealed tank is half filled with liquid and the remaining space is subjected to an externally applied pressure, thereby raising the liquid in a tank exit tube to a height determined solely by the pressure in the tank. Further liquid is introduced into the tank, against the pressure therein, by means of a rotating inlet tube provided with a plurality of radially extending exit tubes which rotate about a vertical axis in the air space above the liquid in the tank. The inlet tube is rotated by means of an electric or other power source located either internally or externally of the tank. |
