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working principle for peristaltic pump

Types of peristaltic pumps, peristaltic pump, also known as tube pump is a new type of industrial pump. It is widely used in pharmaceutical, food, chemical and other industries. It conveys some sensitive, viscous, corrosive, grinding, high purity requirements and contains certain granulate material medium.

Peristaltic pump convey fluid by alternately squeezing and releasing the flexible tube of the pump. It’s like squeezing a tube between two fingers as your fingers move, negative pressure is formed in the tube and the liquid flows with it. Peristaltic pump is a “pillow” fluid formed in a section of pump tube between two rollers. The volume of the “pillow” depends on the inner diameter of the pump tube and the geometric characteristics of the rotor. Flow depends on the product of the rotational speed of the pump head and the size of the “pillow” and the number of “pillows” produced by the rotor in each turn. The size of “pillow” is usually constant except when pumping fluid with extra viscous fluid. Comparing the pumps with the same diameter of the rotor, the pumps with larger “pillow” volume are produced and the volume of fluid transported by the rotor in each turn is larger, but the pulsation degree is also larger. This is similar to the case of diaphragm valves. The pump with a smaller “pillow” volume is produced, and the fluid volume conveyed by the rotor is smaller in each turn, moreover, the small “pillow” formed rapidly and continuously makes the fluid flow more stable. This is similar to the case of gear pumps.

Types of peristaltic pumps

Basic speed-variable peristaltic pump: adopt high quality stepper motor drive, digital display, touch screen, basic function adjust speed, reversible direction, full speed and state memory power-down-memory.

Intelligent fow peristaltic pump, using colorLCD and touch screen technology, the user can directly input the flow rate, easy to operate, intuitive interface display, suitable for precise control of flow transmission, flow control accuracy up to ±0.5%, with flow display, flow control, flow accumulation and other functions.

Dispensing peristaltic pump: mainly suitable for various complex liquid quantitative distribution, accurate metering and quantitative feeding. When the liquid volume dispensing accuracy is high, the liquid volume dispensing mode is more convenient. when the output is high, the time dispensing mode is more convenient.


peristaltic pump applications

The pump is a kind of equipment used for liquid precision transmission. This feature allows it to be used in the chemical industry, pharmaceutical industry, experimental field, and food industries.

Peristaltic pump solutions

After the pump tube is used for about 220 hours, the hose can be turned over  that is, 90 degree rotation, because after a long time squeezing one side of the hose, it is easy to cause damage to one side, and turning over can increase the service life.

The storage period of the pump tube shall not exceed one year  long-term inapplicability will cause aging.

Lubricate the pump rollers every 6 months special lubricants are required.

After using the pump for a long time, if abnormal noise occurs, it can be removed for inspection to see if it is caused by the wear or damage of the bearing. If not, please contact the peristaltic pump manufacturer.

The above is an introduction to the working principle of the peristaltic pump. I hope to help you use the equipment better. If you have any doubts, please contact our after-sales engineer. We will serve you wholeheartedly.