What Is Pump Tubing?
A pump tubing is a type of liquid transfer pump. A pump tubing consists of three parts: a rotating part, a roller, and a tube. The motor rotates the roller and pushes out the liquid in the tube to pump it.
In Japan, pump tubing is also called a roller pump because of this principle. Overseas, they are called peristaltic pumps or pump tubing.
These are good pumps with many advantages, but the tubing is difficult to handle.
Uses of Pump Tubing
The advantages of pump tubing include continuous pumping, self-priming capability, resistance to breakage even after repeated operation, disposable tubing, and metered volume pumping.
Since the pump itself is not wetted, its use is particularly popular in the food and pharmaceutical industries. Disposal of the tubing allows the piping to be refreshed. Since the liquid is pumped while crushing the tubing, there are cases where the inner wall is scraped off, and waste is produced.
Principle of Pump Tubing
A pump tubing consists of a single tube that enters the casing and exits through the casing. Multiple rollers are placed around the tube to crush the tube. The rotating part rotates, causing the rotation of the rollers, and a vacuum is created by crushing the tube. The vacuum draws in the liquid. The vacuumed liquid is then sent directly to the discharge side, where it is pumped. This process can be repeated for continuous transfer.
In principle, the vacuum operation only crushes the tube, so the tube is relatively unbreakable. However, there is a risk of scraping the inner wall of the tube. Also, when pressure is applied, the tubing is trapped between the rollers, which exerts a positive displacement effect on the pump. This prevents backflow even when the pump is not running. This eliminates the need for a check valve in the tubing, thus reducing costs.