Tesis Bomba Peristaltica

michael smith engineers ltd

The UK’s leading pump specialist since 1971 for difficult liquid handling applications

How a Peristaltic Pump works
Freephone 0800 3167891info@michael-smith-engineers.co.uk www.michael-smith-engineers.co.uk

michael smith engineers ltd

The UK’s leading pump specialist since 1971 for difficult liquid handling applications

Peristaltic Principle
 Thetubing is fixed between the tube-bed and the rotor
 at each roller location the tubing is squeezed • position A, B and C

 The rollers on the revolving rotor move across the tubing
 the tubingis continuously squeezed by the rollers which push the liquid in the direction of the revolving rotor

 The tubing behind the rollers recovers its shape, creates a vacuum and draws liquid inbehind it.

Freephone 0800 3167891 info@michael-smith-engineers.co.uk www.michael-smith-engineers.co.uk

michael smith engineers ltd

The UK’s leading pump specialist since 1971 for difficultliquid handling applications

Peristaltic Principle
 A ‘pillow’ of liquid is formed between the
rollers
 the pillow is the pump chamber and determines the volume per roller step and, hence, theflow rate  the pillow volume not only depends on the inner diameter (i.d.) of the tubing, but also on the tubing properties, the drive and pump-head specifications as well as the liquid and thephysical application conditions

Freephone 0800 3167891 info@michael-smith-engineers.co.uk www.michael-smith-engineers.co.uk

michael smith engineers ltd

The UK’s leading pump specialist since 1971for difficult liquid handling applications

Roller-step volume
The pillow volume determines the roller-step volume which depends on:
 Pump system
 number of rollers  pump-head design - e.g.spring-loaded tube-bed  occlusion setting  rotation speed

 Tubing
 inner diameter  wall thickness  formulation  age of tubing

 Liquid
 type of liquid  temperature  viscosity

...