Working principle of peristaltic pump

As the rollers turn, they squeeze one side of the peristaltic tube, causing the tube wall on that side to fold inward, creating a closed chamber. As the roller continues to turn, the closed chamber moves forward along the peristaltic tube, carrying the medium inside out of the pump. When the chamber moves to the other side of the peristaltic tube, the roller compresses again, causing the wall of the tube on the other side to fold inward, forming a new closed chamber, and the process is repeated.

This continuous extrusion and release action allows the peristaltic pump to produce a continuous and stable flow rate, even when conveying high viscosity, containing solid particles or corrosive media can maintain good performance. Since the peristaltic pump has no internal valve, it does not affect the flow rate due to changes in the viscosity of the medium, which makes it an ideal choice in many special applications.

In addition, the flow rate of the peristaltic pump can be adjusted by changing the speed of the roller, while the back pressure of the pump depends on the viscosity of the medium and the resistance of the system. Because of its simple structure and easy maintenance, peristaltic pumps are widely used in many industrial processes.