A kind of differential pumping plant with what aquaculture system, the pumping plant includes a water pipeline, which has an input terminal and an output end, and one end of the water pipeline is equipped with a blade wheel chamber, an impeller is equipped in the blade wheel chamber, the central axis of the impeller is connect with a driving motor. This creates the principle of differential pumping plant are as follows: when the impeller rotates rapidly, blade promotes water to rotate quickly, and the water being rotating flies out from impeller under the influence of centrifugal force, and the water in the impeller is spilled over Hou, and the central part of impeller forms vacuum area. The water of blade wheel chamber's input terminal enters impeller under the action of atmospheric pressure (or hydraulic pressure). It recycles so endlessly, so that it may realize and continuously send water. The advantages of mountable input terminal or output end in water pipeline of the blade wheel chamber of this creation, this creation, is simple in what structure, and it is few to consume energy, and can save use cost.一種用於水產養殖系統的壓差式水泵裝置，該水泵裝置包括一送水管道，該送水管道具有一輸入端與一輸出端，該送水管道的一端設有一葉輪室，該葉輪室內設有一葉輪，該葉輪的中心軸與一驅動電機連接。本創作壓差式水泵裝置的原理為：當葉輪快速轉動時，葉片促使水很快旋轉，旋轉著的水在離心力的作用下從葉輪中飛出，該葉輪內的水被拋出後，葉輪的中心部分形成真空區域。該葉輪室輸入端的水在大氣壓力(或水壓)的作用下進入葉輪。這樣循環不已，就可以實現連續送水。本創作的葉輪室可安裝在送水管道的輸入端或輸出端，本創作的優點在於結構簡單，且耗能少，能夠節約使用成本。
