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Positive Displacement Pump

IP.com Disclosure Number: IPCOM000094650D
Original Publication Date: 1965-Apr-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Albo, RT: AUTHOR

Abstract

This pump operates by squeezing a section of flexible tubing 10, thus positively displacing the fluid contained by it. Check valves 12 and 14 are placed at both ends of tubing 10 to make the fluid move in one direction. Roller 16 is mounted on eccentric 20 driven by motor 18 and moves driving arm 22 up and down. Arm 22 is attached to a set of rollers 24 which are connected at the ends by pivoted links 26

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Positive Displacement Pump

This pump operates by squeezing a section of flexible tubing 10, thus positively displacing the fluid contained by it. Check valves 12 and 14 are placed at both ends of tubing 10 to make the fluid move in one direction. Roller 16 is mounted on eccentric 20 driven by motor 18 and moves driving arm 22 up and down. Arm 22 is attached to a set of rollers 24 which are connected at the ends by pivoted links 26

The motion of arm 22 forces rollers 24 together and apart. Thus, tubing 10 is compressed in both horizontal (drawings 2, 3, 4) and vertical (drawings 6, 7, 8) directions. Tubing 10 is forced back to its normal configuration (drawings 4, 5, 6 and drawings 8, 9, 2).

With each revolution of eccentric 20, arm 22 moves up and down once, compressing and releasing tube 10 twice. Therefore, twice the displaced volume of tube 10 in fluid is moved through valves 12 and 14 with each complete stroke of arm 22.

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