This article details the pump (centrifugal pump, reciprocating pump) flow adjustment methods, such as changing the pump device characteristics (such as the outlet valve adjustment, bypass adjustment, speed adjustment, cutting the impeller diameter, replace the impeller, blocked Several impeller runners, etc.) to change the pump characteristic curve, and each adjustment method is described and its characteristics are analyzed. Adjustment method Meaning Characteristics Centrifugal pump to change the device characteristic curve 1, the outlet valve regulation outlet pipe installation of regulating valve, valve opening by regulating the flow method is simple, but the power loss is large, uneconomical 2, bypass adjustment using bypass shunt regulation flow Can solve the problem of continuous operation of the pump in small flow, but the power loss and increase the pipeline to change the pump characteristic curve 3, the speed adjustment Regulating the pump shaft speed Regulating the flow power loss is small, but need to increase the speed governing mechanism or use speed motor, change The speed method is best suited to steam turbines, internal combustion engines and DC motor driven pumps. It is also possible to use frequency control to change the motor speed. 4. Cutting the outside diameter of the impeller Cutting the outside diameter of the impeller Adjusting the pump flow Power loss is small but can not be restored after the impeller is cut and the impeller The amount of cutting is limited. Suitable for long-term needs of small traffic and traffic changes little occasion 5, replace the impeller replacement impeller diameter adjustment pump flow power loss is small, but need to prepare a variety of impeller diameter, flow adjustment range is limited 6, Plugging a few impeller runner block several impeller runner (even) to reduce the pump flow is equivalent to the throttle adjustment, but more than the throttle valve energy saving reciprocating pump to change the device characteristic curve 7, the bypass adjustment using bypass shunt, Adjusting the flow rate can not take the outlet valve to regulate the flow ã€Purchase】 Set the well to enhance the pump ã€Purchase】 machine seal, bearing ã€Purchase】 Circulating pump ã€Purchase】 Motor ã€Purchase】 Booster pump ã€Purchase】 Chemical pump ã€Purchase】 Vertical multistage pump [Procurement] carbon steel electrode [Procurement] screw pump Previous: Characteristics of Several Typical Chemical Pumps Next: Variety of Screw Pumps and Comparison List var cpro_id = "u2852961"; Specially Recommended Resistance to Single Screw Pump Advantage Features and main purposes High-quality piston pump enterprise "beachhead battle" is in full swing Shanghai Shenfu plastic industry new benchmark valve Market Analysis: The valve market turnover of up to 150 billion yuan 2018 Ha Door international vending machines and self-service products Exhibition Venue - time related articles Products Guide Technical Interpretation Media Focus Exhibition Information Olsen Pump - China's national brand of industrial pumps: large-diameter diesel self-priming sewage pump technology to fill the gaps in Europe Olsen Pumps through the audits of Sinopec audit, the official became the long axis of the pump and other material procurement suppliers · Olsen pump - the national brand of industrial pumps in China: Large-diameter diesel self-priming sewage pump technology to fill gaps in the domestic · Olsen pump through the Sinopec Audit audits, the official became the long-axis pump, such as Sinopec procurement of materials suppliers · Analysis of the advantages of water ring vacuum pumps and shortcomings of water ring pumps · Analysis of magnetic centrifugal pump failure analysis and solutions · Leveraging the "valve heat wave" east wind, deep South China market , 2018 FLOWTECH Guangdong International Pumping Valve Exhibition ready to go · What are the characteristics of fine-grained concrete mortar pump? · What is a small secondary structure column pump? 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