Improved peristaltic pump

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 43/12 (2006.01) B29C 53/20 (2006.01) F04B 43/00 (2006.01) F16L 11/12 (2006.01)

Patent

CA 2195871

An improved peristaltic pump using a pumptube comprising an inner tube and an outer tube each of rigid fluoroplastic material, preferably polytetrafluoroethylene (PTFE), is provided. The pumping section of the pumptube which contacts the pressure rollers of the peristaltic pump is preformed or shaped into a flattened, oval-like shape which approximately conforms to the pumptube passageway in the peristaltic pump. The pressure rollers contact and compress the flattened side of the pumptube and, thereby, effect the transport or pumping of the fluid. Methods for preparing the pumptubes of this invention are also provided. Corrosive, hot, and/or high pressure fluids can be readily handled using the improved pumtubes and peristaltic pumps provided.

Pompe péristaltique améliorée mettant en oeuvre une conduite de pompage comprenant un tube interne et un tube externe constitués l'un et l'autre d'un matériau fluoroplastique rigide, de préférence du polytétrafluoroéthylène (PTFE). Le tronçon de pompage de la conduite de pompage qui est au contact des rouleaux de pression de la pompe péristaltique est préformé ou bien présente une configuratio aplatie, sensiblement ovale, qui se conforme approximativement à la voie de passage de la conduite de pompage de la pompe péristaltique. Les rouleaux de pression compriment la partie aplatie de la conduite de pompage et réalisent de ce fait le déplacement ou pompage du fluide. L'invention porte également sur les procédés d'élaboration des conduites de pompage. Des fluides corrosifs, à haute température et sous des pressions élevées peuvent ainsi être manipulés facilement grâce à ces nouvelles conduites de pompage et pompes péristaltiques.

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