Select the Hardness and Size of Peristaltic Hoses

1. The importance of peristaltic pump tubing

If the filter is placed at the discharge end of the pump, when the filter removes impurities from the flow, it may be partially blocked, which will produce back pressure in the pump. If the peristaltic pump tubing exceeds the rated pressure, it may cause the pipe burst. In these cases, it may be necessary to increase the hardness of the hose to prevent it from bursting.

2. Select the hardness and size of peristaltic pump tubing

The peristaltic pump delivers fluid by squeezing the peristaltic hoses between the roller and the briquette, so the peristaltic hoses need to be flexible enough to allow the motor to rotate and push the fluid through the hose; if the hose is too hard, it will add additional load to the motor, which may shorten the service life of the pump or make it stop working completely. Generally speaking, the hardness of the peristaltic pump hose is controlled between 50-65.

Similar to hose hardness, if the size of peristaltic pump tubing is not correct, it may cause irreversible damage to the pump. The wall thickness of the hose should match the gap between the roller and the briquette. If the wall is too thick, the extrusion deformation of the hose will increase, resulting in the increase of the motor load and the failure of a normal start-up; in addition, the friction among the roller, the briquette and the hose will increase, resulting in the shorter service life of the hose. Even if the wall thickness is 0.005 inches, the service life of the hose will be significantly shortened.

If the wall is too thin, the extrusion deformation of the hose can not be realized, resulting in insufficient suction or insufficient output pressure, so as to reduce the flow or increase the pulsation. The inner diameter of the hose should also be controlled within a certain range to ensure the flow accuracy and pulsation amplitude of the transmission peristaltic pump.