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渣漿泵比轉速在泵的分類、相似設計和產品系列化方面具有重要用途。

(1)用比轉速對泵進行分類。離心泵的比轉速大小與輸送液體的性質無關，而與葉輪形狀及泵的特性曲線有密切關系,可以根據比轉速的大小,將泵分成低比轉速、中比轉速和高比轉速的離心泵，以及比轉速更高的混流泵和軸流泵，見表1-7。同時，表1-7還表示了比轉速與葉輪形狀及特性曲線形狀的關系?？梢钥闯?/span>,低比轉速泵主要指高揚程、小流量,高比轉速則代表低揚程、大流量;低比轉速泵葉輪外形窄而長.高比轉速泵葉輪寬而短;低比轉速泵特性曲線,零流量時軸功率小，應關閉出口閥門啟動反之高比轉速泵零流量時軸功率大，應在出口閥門打開時啟動;低比轉速泵高效區比較寬高比轉速泵商效率區比較窄;低比轉速泵由于葉輪狹窄,葉輪中流動損失較大，效率較低，反之高比轉速深效宰相對比較高。

(2)用比轉速進行相似設計。在離心泵的相似設計中，可以根據比轉速相等的原則.從現有的經過實踐證明性能良好的泵中選取模型泵然后利用相似定律把模型泵的性能參數和幾何參數換算成原型泵的性能參數和結構尺寸。當根據工作需要的Q、H和n計算出n、值小于30時，一般采用容積式泵;當比轉速n.>30時，則采用離心泵、混流泵或軸流泵等。渣漿泵廠家

(3)用比轉速編制離心泵系列。在編制離心泵系列時，只要適當地選擇流量、揚程和轉速的組合， 就可以將反映同一.類型泵的性能和結構的綜合性參數n。繪在同一張坐標圖上，即型譜圖,并使n。在型譜圖上均勻地分布。這樣就大為減少水力模型的數目,對設計制造部門來說，就能節約大量人力、物力

The specific speed of slurry pump has an important use in pump classification, similar design and product serialization.

(1) Pumps are classified by specific speed. The specific speed of centrifugal pump has nothing to do with the nature of liquid delivered, but has a close relationship with the shape of impeller and the characteristic curve of pump. According to the specific speed, the pump can be divided into low specific speed, medium specific speed and high specific speed centrifugal pump, and mixed flow pump and axial flow pump with higher specific speed. See table 1-7. At the same time, table 1-7 also shows the relationship between specific speed and impeller shape and characteristic curve shape. It can be seen that the low specific speed pump mainly refers to the high head and small flow, while the high specific speed pump represents the low head and large flow; the impeller shape of the low specific speed pump is narrow and long, and the impeller of the high specific speed pump is wide and short; the characteristic curve of the low specific speed pump is that the shaft power is small when the flow is zero, and the outlet valve should be closed to start; on the contrary, the shaft power is large when the flow of the high specific speed pump is zero, and it should be started when the outlet valve is open; the low specific speed pump The high efficiency area is wider than that of high specific speed pump, and the efficiency area is narrower; because the impeller of low specific speed pump is narrow, the flow loss in the impeller is larger, and the efficiency is lower, on the contrary, the high specific speed and deep efficiency are relatively high.

(2) Similar design with specific speed. In the similar design of centrifugal pump, according to the principle of equal specific speed, the model pump can be selected from the existing pumps with good performance, and then the performance parameters and geometric parameters of the model pump can be converted into the performance parameters and structural dimensions of the prototype pump by using the similarity law. When the value of N calculated by Q, h and N is less than 30, the positive displacement pump is generally used; when the specific speed is more than 30, the centrifugal pump, mixed flow pump or axial flow pump are used. Slurry pump manufacturer

(3) The centrifugal pump series is designed with specific speed. In the design of centrifugal pump series, as long as the combination of flow, head and speed is properly selected, the comprehensive parameter n reflecting the performance and structure of the same type pump can be obtained. It is drawn on the same coordinate map, i.e. type spectrum, and n. It is evenly distributed on the type spectrum. In this way, the number of hydraulic models can be greatly reduced, and a lot of manpower and material resources can be saved for the design and manufacturing department