Bomba Peristáltica

Peristaltic pumps are inspired by nature, by the so-called peristaltic movements of certain tubes in living organisms. The most characteristic example is the digestive tract. The part of the esophagus that precedes the food bolus, for instance, contracts through the smooth muscles of this organ. Conversely, the part that follows the bolus relaxes. In this way, the bolus advances from the contracted part towards the relaxed part. The word peristalsis comes from the Greek words peri (around) and stalsis (action), meaning an action around a tube. Generally, peristaltic pumps have a motor that rotates rollers or rotors that press on a tube made of soft and elastic material such as silicone, rubber, or latex. As these rollers pass, squeezing the tube, they propel the liquid, in a way similar to the peristaltic mechanism of physiology. They can have direct current motors, which are very easy to connect. It is also possible to find them with stepper motors that allow for much more precise and programmable control. The main advantages: The tube is completely isolated from the rest of the pump, so neither does the pump contaminate the fluid passing through the tube, nor can this fluid affect the mechanisms of the pump. It is a very precise pump that allows for great control. This is why they are widely used in medical and laboratory equipment. It is a self-priming type of pump. It is not necessary to introduce liquid for it to start working. The movement of the rollers on the empty tube (filled with air) is sufficient to create a small suction that absorbs the fluid we want to pump.