| 摘要 |
A multi-stage centrifugal pump in two-shaft implementation has a body, working wheels of the first and the following stages rigidly fixed on the drive shaft, a low-speed topping wheel of two-side stroke of the first stage installed on the shaft in free way. The working wheels of the stages are placed at two sides of the topping wheel and are arranged in counter-placement. The topping wheel of the first stage is equipped with an additional hydro-drive from the working wheel of the next stage.
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