Eccentric screw pump with increased temperature range

Details Eccentric screw pump with increased temperature range Eccentric screw pump with increased temperature range

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 2/107 (2006.01) F04C 15/00 (2006.01) F04C 2/08 (2006.01)

Patent

CA 2499833

Disclosed is an eccentric screw pump or an eccentric screw motor, in which the inward-extending teeth inside the stator and the spaces between the teeth are provided with an additional groove-and-rib structure, whereby friction between the stator and the rotor is diminished because the pressing force can be decreased while the sealing effect remains the same or the contact area is reduced at an increased pressing force.

L'invention concerne une pompe à vis sans fin excentrique ou un moteur à vis sans fin excentrique comprenant un stator dans lequel les dents faisant saillie vers l'intérieur ainsi que les interstices se trouvant entre ces dents sont pourvus d'une structure supplémentaire de type rainures et nervures, ce qui permet de réduire les frottements entre le stator et le rotor car la force de pression peut être réduite tandis que l'effet étanchéifiant demeure constant, ou la surface de contact est réduite tandis que la force de pression augmente.

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