Teach you to buy a centrifugal pump

Centrifugal pumps are one of the most common pump products and are widely used in various fields of industry. Centrifugal pumps use the impeller rotation to make the centrifugal force generated by the water work. However, there are many kinds of centrifugal pumps on the market, and the standards vary. The following will teach you how to choose the most suitable product.

(1) Determining the flow rate of the delivery system and the delivery volume of the indenter fluid is generally stipulated in the production task. If the flow rate fluctuates within a certain range, the maximum flow rate should be considered when selecting the centrifugal pump. Based on the arrangement of the delivery system piping, the Bernoulli's equation is used to calculate the required head pressure at the maximum flow rate.

(2) Select the type and type of the pump First, determine the type of pump based on the nature of the liquid to be transferred and the operating conditions, then select the appropriate model from the pump's sample or catalog by the determined flow rate Qe and indenter He. Obviously, the flow rate and pressure head provided by the selected pump are not necessarily completely in line with the required flow Qe and pressure head He, and taking into account changes in operating conditions and with a certain margin, the flow rate of the selected pump and The indenter can be slightly larger, but the efficiency of the corresponding pump under this condition should be relatively high, ie the coordinate position of the point (Qe, He) should lie under the HQ curve corresponding to the high efficiency range of the pump. After the model is selected, various performance parameters of the pump should be listed.

(3) Check the shaft power of the pump If the density of the delivered liquid is greater than the density of the water, it is necessary to check the shaft power of the pump. Of course, there are many products to meet the above technical requirements. When purchasing, we should also consider the price of the centrifugal pump and the reliability of the use; the geographical location, strength, and service word of service of the supplier. Select Asia Fluid Machinery Network, its professional and innovative B2B model, can provide you with one-stop advice and services.