Pompe à lobes

Les pompes à lobes sont un type de pompe rotative à déplacement positif composée d'une paire de rotors à synchronisation externe. Chaque rotor est entraîné indépendamment sur un arbre distinct. Les rotors ne sont pas en contact les uns avec les autres. La conception des rotors varie, mais parmi les types les plus courants, on trouve les modèles à trois lobes et à lobes multiples. Les pompes à lobes fonctionnent de manière similaire aux pompes à pistons circonférentiels. Cliquez ici pour visionner notre vidéo « Comment ça marche » sur ce sujet.

Lobe pumps are similar in pumping action to external gear pumps but differ in that the rotors are driven independently on 2 rotating shafts.  A pair of external timing gears ensure that the rotors do not contact.

As the rotors turn, a cavity is formed at the inlet side of the pump.  This creates a vacuum to pull the liquid into the spaces between the tips of the lobes.  This liquid is trapped between these lobes and the close-fitting casing wall.  The rotation of the rotors carries the liquid around to the outlet side of the pump.  The liquid does not pass between the rotors.

At the outlet, the meshing of the lobes forces the liquid through the outlet port.

Because of the large pumping cavities and non-contacting design, lobe pumps are ideal for the gentle handling of both thin and viscous liquids and liquids containing large solids.  They are designed to be easily cleaned, making them ideal for applications requiring sanitary construction and frequent cleaning -this includes clean-in-place (C.I.P.) and steam-in-place (S.I.P.)  processes.