In the system of fluid conveying equipment, metering pumps are key devices with special functions. Unlike ordinary water pumps that only perform the basic function of fluid conveyance, metering pumps can precisely deliver fluids according to preset flow rates and speeds. Therefore, they are also called dosing pumps or proportioning pumps in industrial production and are widely used in scenarios requiring strict control of fluid dosage.
A metering pump consists of a power drive part and a hydraulic end, and its working principle is based on a positive displacement conveying mechanism. The motor drives a cam or eccentric wheel to rotate, which in turn drives a plunger or diaphragm to reciprocate. During the suction phase, the inlet valve of the hydraulic end opens, and the fluid is drawn into the pump chamber; during the discharge phase, the inlet valve closes and the outlet valve opens, and the fluid is delivered quantitatively under pressure. Its unique feature is the ability to precisely adjust the flow rate, which can usually be achieved through manual knobs, electronic control devices, or even computer systems.
Metering pumps come in various designs, each tailored to specific needs:
Selecting the right metering pump requires considering multiple factors comprehensively. Firstly, the flow range should match the minimum and maximum flow rates required in actual working conditions to ensure sufficient adjustment space. Secondly, fluid properties, such as viscosity, corrosiveness, and solid content, directly determine the choice of pump material and type. In addition, system pressure is crucial, as different pump types have significantly different pressure resistance capabilities, which need to be compatible with the pipeline pressure requirements. Finally, the level of automation required also affects the selection, ranging from manual adjustment to intelligent linkage, which should be determined based on the needs for operational convenience and control precision.
Metering pumps play an important role in multiple industries:
To maintain the accuracy and service life of metering pumps, daily maintenance cannot be ignored. It is necessary to regularly check whether the seals are aging to prevent leakage from affecting metering accuracy; for pump bodies in contact with corrosive fluids, the chamber should be cleaned on time to avoid residual substances wearing down components; in addition, regular lubrication of the transmission part and calibration of control instruments are also required to ensure that the equipment is always in optimal operating condition.
Conclusion: As a key device for precisely controlling fluid conveyance, metering pumps are indispensable in fields such as pharmaceuticals and environmental protection due to their high accuracy and wide adjustment range. Standardized maintenance is the guarantee for their stable operation. Teffiko has been deeply engaged in the metering pump field for many years, and its products feature industry-leading accuracy and stability, with customized solutions widely recognized by the market. Whether it is complex industrial production or precise experimental operations, Teffiko can help customers efficiently select and use metering pumps through professional selection guidance and thoughtful maintenance support, fully demonstrating Teffiko's strength in the metering pump field.
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