Gear pump

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

Patent

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Details

F04C 2/16 (2006.01) F04C 2/08 (2006.01) F04C 2/18 (2006.01) F04C 2/20 (2006.01) F04C 2/10 (2006.01)

Patent

CA 2514823

A pump (200) comprises a driving rotor (202) and a driven rotor (203) that are positioned in a housing (199) such that, as the driving rotor and the driven rotor rotate, the teeth (223a) of the driving rotor and the teeth (223b) of the driven rotor mesh to form a positive displacement seal (196,198). The teeth of the driving rotor and the driven rotor are configured such that seals between the inlet side (210) and the discharge side (211) of the pump are formed between only the leading surfaces (208) of the teeth of the driving rotor and the trailing surfaces (209) of the teeth of the driven rotor.

L'invention concerne une pompe (200) comprenant un rotor d'entraînement (202) et un rotor entraîné (203) placés dans un logement (199) de manière que, lors de la rotation du rotor d'entraînement et du rotor entraîné, les dents (223a) du rotor d'entraînement et les dents (223b) du rotor entraîné s'engrènent de manière à former un joint d'étanchéité (196, 198) à déplacement positif. Les dents du rotor d'entraînement et du rotor entraîné sont configurées de manière que les joints entre le côté d'entrée (210) et le côté de décharge (211) de la pompe soient formés uniquement entre les surfaces menantes (208) des dents du rotor d'entraînement et les surfaces de talonnement (209) des dents du rotor entraîné.

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