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Peristaltic Pump : How To Work ?

- Aug 07, 2018 -

Peristaltic pumps have many uses in industry, but their most common use Is for high purity applications. The reason these pumps are preferred for high purity applications is because the material being pumped is confined to the tube. The pump never touches the material and the material never touches the pump. This keeps the pump from contaminating the material and it also keeps the material from contaminating the pump.

 

Peristaltic Pump are so named because their action mimics the action in which food and liquids are transferred through humans and animals, called peristalsis. perhaps the best demonstration of peristalsis is watching a snake swallow.

Since pumps don’t have muscles, it is necessary to use rollers to mimic the opening and closing of the tube on a peristaltic pump and move materials forward. The rollers move around on a rotor and close the tube sequentially. This creates a vacuum at the entrance while moving the materials in the pump toward the outlet.

The size of the tube, the amount of materials being transported and the speed of the rollers determine the flow rates of a peristaltic pump. This allows us to precisely control the speed and the amount of materials moved by controlling the size of the tubing and the rate of the rollers.

Peristaltic pumps are available in numerous configurations from the most simple that only pump at one rate to those that are adjusted by computer to control exact amounts of materials being pumped such as in metering applications.


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