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Difference between revisions of "Peristaltic Pumps"
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[[Category:Pumps]]{{Knoppen}} | [[Category:Pumps]]{{Knoppen}} | ||
[[File:Peristaltic Pumps.jpg|thumb|right|Peristaltic Pumps]] | [[File:Peristaltic Pumps.jpg|thumb|right|Peristaltic Pumps]] | ||
[[File:Peristaltic Pumps1.jpg|thumb|right|Peristaltic Pumps]] | [[File:Peristaltic Pumps1.jpg|thumb|right|Peristaltic Pumps]] | ||
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Peristaltic pumps are typically used to pump clean or sterile or aggressive fluids because cross contamination with exposed pump components cannot occur. Some common applications include pumping for fluids through an infusion device, aggressive chemicals, high solids slurries and other materials where isolation of the product from the environment, and the environment from the product, are critical. It is also used in heart-lung machines to circulate blood during a bypass surgery as the pump does not cause significant hemolysis. | Peristaltic pumps are typically used to pump clean or sterile or aggressive fluids because cross contamination with exposed pump components cannot occur. Some common applications include pumping for fluids through an infusion device, aggressive chemicals, high solids slurries and other materials where isolation of the product from the environment, and the environment from the product, are critical. It is also used in heart-lung machines to circulate blood during a bypass surgery as the pump does not cause significant hemolysis. | ||
Peristaltic pumps are also used in a wide variety of industrial applications. Their unique design makes them especially suited to pumping abrasives and viscous fluids. | Peristaltic pumps are also used in a wide variety of industrial applications. Their unique design makes them especially suited to pumping abrasives and viscous fluids.` | ||
==Advantages== | ==Advantages== | ||
* No contamination. Because the only part of the pump in contact with the fluid being pumped is the interior of the tube, it is easy to sterilize and clean the inside surfaces of the pump. | * No contamination. Because the only part of the pump in contact with the fluid being pumped is the interior of the tube, it is easy to sterilize and clean the inside surfaces of the pump. | ||
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* They are able to handle slurries, viscous, shear-sensitive and aggressive fluids. | * They are able to handle slurries, viscous, shear-sensitive and aggressive fluids. | ||
* Pump design prevents backflow and syphoning without valves. | * Pump design prevents backflow and syphoning without valves. | ||
==Disadvantages== | ==Disadvantages== | ||
* The flexible tubing will tend to degrade with time and require periodic replacement. | * The flexible tubing will tend to degrade with time and require periodic replacement. | ||
* The flow is pulsed, particularly at low rotational speeds. Therefore, these pumps are less suitable where a smooth consistent flow is required. An alternative type of positive displacement pumpshould then be considered. | * The flow is pulsed, particularly at low rotational speeds. Therefore, these pumps are less suitable where a smooth consistent flow is required. An alternative type of positive displacement pumpshould then be considered. | ||
==Sources== | ==Sources== | ||
[http://en.wikipedia.org/wiki/Peristaltic_pump Wikipedia Peristaltic Pump] | [http://en.wikipedia.org/wiki/Peristaltic_pump Wikipedia Peristaltic Pump] | ||