What is peristaltic pump?

A peristaltic pump also referred to as a hose or tube pump works using positive displacement. Peristaltic, tube or hose pump is a type of positive displacement pump that transports the liquid through the tube by a series of rollers, that squeeze it against the pump housing, in a similar way that we swallow food.

Where is peristaltic pump used?

Peristaltic pumps are used for pizza sauce dispensing, juice production and the injection of vitamins A & D. They are also used to circulate cell suspension in fermentation. They are used for the aspiration of tissue culture media and harvesting cell media.

How does a peristaltic pump work?

A peristaltic pump also referred to as a hose or tube pump works using positive displacement. Fluid is fed through the tubing by rollers that rotate squeezing a flexible tube against the pump housing. As the roller moves over the tubing, it expands and creates a vacuum to allow more fluid to enter.

How much pressure can a peristaltic pump produce?

Typically, peristaltic tubing pumps offer flow rates as low as 0.0007 mL/min to 45 litres/min and are able to generate pressures up to 8.6 bar (125 psi). Peristaltic pumps confine the media to the tubing, so that the pump cannot contaminate the fluid and the fluid cannot contaminate the pump.

What is the meaning of peristaltic?

Definition of peristalsis : successive waves of involuntary contraction passing along the walls of a hollow muscular structure (such as the esophagus or intestine) and forcing the contents onward.

Why are peristaltic pumps used?

A peristaltic pump transfers chemicals sealed inside of a tube to prevent cross-contamination. This pump is the best choice for medical, agricultural, and water treatment purposes that require precise dosages of liquid.

Why is peristaltic pump used?

Applications. Peristaltic pumps are typically used to pump clean/sterile or highly reactive fluids without exposing those fluids to contamination from exposed pump components.

What is peristaltic movement class 10th?

Peristaltic movement is the movement that refers to the constriction and relaxation of muscles of the esophagus, intestine, and stomach. It is a wave-like structure, which starts in the esophagus when the bolus of food is swallowed.

What is peristaltic rush?

PERISTALTIC RUSH. Peristaltic movements, which consist in a contraction of the gut above a food mass and a relaxa- tion below it; they are chiefly concerned in carrying the food through the intestines in the aboral direction. The progress is very slow, I cm.

What is peristaltic pump PDF?

Definition. Peristaltic pumps are mechanical displacement pumps that induce flow in a fluid-filled, flexible- walled conduit through peristalsis –transport due to traveling contraction waves. While macroscale. peristaltic pumps appear in a variety of configurations, micropumps based on this principle almost.

What are peristaltic movements Class 9?

Answer: Peristaltic movement is the movement that refers to the constriction and relaxation of muscles of the esophagus, intestine, and stomach. It is a wave-like structure, which starts in the esophagus when the bolus of food is swallowed.

What is peristaltic reaction?

peristalsis, involuntary movements of the longitudinal and circular muscles, primarily in the digestive tract but occasionally in other hollow tubes of the body, that occur in progressive wavelike contractions. Peristaltic waves occur in the esophagus, stomach, and intestines.

What is a high pressure peristaltic pump?

High pressure peristaltic pumps are industrial grade pumps designed for high pressure pumping of aggressive sewage and slurries. The casings in these pumps are lined with lubricants to avoid damage from abrasion and friction, as well as to dissipate heat buildup.

How does pulsation affect metering with a peristaltic pump?

With high inlet pulsation, the peristaltic hose may become oval-shaped, resulting in less flow. Accurate metering with a peristaltic pump is therefore only possible when the pump has a constant flow rate, or when inlet pulsation is completely eliminated with the use of correct designed pulsation dampeners.

What is the wavelength of a peristaltic pump wave?

For a functional model the length is set to L = 35 mm. There are two pumping waves to be expected along the pump creating a wavelength of l = 17.5 mm. The performance of a peristaltic pump is described by several parameters]

What happens if the peristaltic hose is longer?

However, a longer tube implies more pinch points between inlet and outlet, increasing the pressure that the pump can generate. The flow rate of a peristaltic pump is in most cases not linear. The effect of pulsation at the inlet of the pump changes the filling degree of the peristaltic hose.