| 摘要 |
PURPOSE: A shaft pump is provided to prevent the decrease of output quantity by operating a secondary impeller when the length of a pipe is expanded and to maintain the uniform output quantity by inhaling fluid at the same height. CONSTITUTION: A shaft pump comprises a vertical duct(110), a extension pipeline(120), a horizontal pipeline(130), main driving axis(140), an extension drive shaft(150), a drive motor(190), an assistant impeller(160) and an impeller(170). The extension pipeline is combined in the vertical duct. The horizontal pipeline is combined in the vertical duct. The main driving axis passes through the center of the vertical duct. The drive motor rotates the main driving axis.
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