Constant flow pump is a fluid conveying equipment that can stably output a constant flow rate, widely used in fields such as pharmaceuticals, food and chemical industry, chemical production, and laboratories. Constant flow pump is a mechanical device that can accurately control the fluid delivery rate and maintain stable flow rate. Its core advantage lies in accurate and adjustable flow output, and it is widely used in experimental research and industrial production for fluid quantitative delivery scenarios.
A constant flow pump uses a motor to drive the plunger, piston, or roller inside the pump body to perform reciprocating motion, achieving the suction and discharge of liquid. Its core control mechanism includes:
Mechanical reciprocating motion: During the suction stroke, the volume of the pump chamber increases to form negative pressure, which sucks in liquid; During the discharge stroke, the volume of the pump chamber decreases and the liquid is squeezed out.
Electronic closed-loop control: equipped with high-precision sensors (such as differential pressure, magnetic or ultrasonic sensors) to monitor flow in real time and feedback data to the controller. The controller dynamically adjusts the motor speed or plunger stroke by comparing the set value with the actual value, ensuring that the flow rate remains stable within the set range.
Main technical features
Accurate and stable flow rate: The flow rate error can usually be controlled within ± 1%, and some high-precision models can even reach ± 0.5%. It can maintain a constant output for a long time without being affected by small changes in pipeline pressure and fluid viscosity.
Easy to operate: Most are equipped with digital display screens and buttons, which can directly set parameters such as flow rate and speed; Some intelligent models support touch operation, traffic calibration, and data storage.
Strong adaptability: Different materials of pump heads (such as polytetrafluoroethylene, stainless steel) and pipelines can be selected according to fluid properties (such as corrosiveness, viscosity, cleanliness) to adapt to various fluid transportation.
Precautions for use
Selection and matching: Select the appropriate type of constant flow pump based on the viscosity, corrosiveness, flow requirements, and working pressure of the fluid (such as choosing peristaltic pumps for transporting highly corrosive fluids).
Pipeline inspection: Before use, confirm that the pipeline connection is tight and there is no leakage; Peristaltic pumps need to be regularly inspected for hose wear to avoid fluid leakage caused by hose rupture.
Startup specification: Before starting, ensure that the pump is filled with fluid (avoid idling), especially for plunger pumps and gear pumps, as idling may damage seals or pump bodies.
Regular maintenance: According to the frequency of use, regularly clean the pump head and replace vulnerable parts (such as hoses and gaskets) to ensure long-term stable operation of the equipment.