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抽沙船離心泵用來泵送液體中含大尺寸至小尺寸物料的泥漿流時，抽沙船降低離心泵葉輪的磨損和進步離心泵效率的方法，其特征是，它包括：

a.將液體切向噴入渦流室形成渦流，并且從該室沿切向排除一部門該液體；、
b.將該泥漿軸向噴入該室，該渦流將大尺寸的該物料與其余留下來的該泥漿和液體分開；
c.將該留下來的該泥漿和液體沿軸向從該室排除，并將其噴入一離心泵的入口；
d.利用從抽沙船離心泵出來的物料作為形成該渦流的噴射液體；因此，該大尺寸的物料移向該渦流的外圓而被排出，結果，中、小、尺寸的物料和液體被噴入該離心泵，因此，抽沙船降低了該葉輪的磨損，并答應該泵高速運轉，因而效率進步。

Pumping sand centrifugal pump for pumping liquid with big size to small size of the material of the mud flow, pumping sand reduce centrifugal pump impeller wear and improve the efficiency of centrifugal pump, which is characterized. It includes:

a.將液體切向噴入渦流室形成渦流，并且從該室沿切向排除一部門該液體；、

A. the liquid is sprayed into the swirl chamber to form a vortex, and the liquid is cut from the chamber to exclude a part of the liquid;,

b.將該泥漿軸向噴入該室，該渦流將大尺寸的該物料與其余留下來的該泥漿和液體分開；

B. the slurry is injected into the chamber, which separates the material from the rest of the mud and liquid;

c.將該留下來的該泥漿和液體沿軸向從該室排除，并將其噴入一離心泵的入口；

C. will be left to the mud and liquid along the axis from the chamber excluded, and will be sprayed into the inlet of a centrifugal pump;

d.利用從抽沙船離心泵出來的物料作為形成該渦流的噴射液體；因此，該大尺寸的物料移向該渦流的外圓而被排出，結果，中、小、尺寸的物料和液體被噴入該離心泵，因此，抽沙船降低了該葉輪的磨損，并答應該泵高速運轉，因而效率進步。

D. using from pumping sand pump out of the material as the formation of the vortex of the injection liquid; therefore, the large size of the material shift to the vortex of the outer circle and is discharged. As a result, medium and small size of the material and the liquid is sprayed into the centrifugal pump. Therefore, pumping sand reduces the wear of the blade wheel, and a high-speed operation of the pump should be, and thus improve the efficiency.