Eccentric screw pump having conical sealing surfaces

Details Eccentric screw pump having conical sealing surfaces Eccentric screw pump having conical sealing surfaces

F - Mech Eng,Light,Heat,Weapons

04

C

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

Patent

CA 2575565

The aim of the invention is to improve the sealing possibilities between the elastic stator lining and corresponding connecting flanges of eccentric screw pumps. In order to increase the sealing surfaces, the stator lining comprises, at least at one of its ends, a conical sealing surface which may be provided with one or more prominent or recessed parts (26, 28, 30).

L'invention concerne l'amélioration des possibilités d'étanchéité entre le revêtement élastique statorique et les brides de raccordement correspondantes des pompes à vis sans fin excentriques. Pour augmenter les surfaces d'étanchéité, au moins une extrémité du revêtement statorique a une surface d'étanchéité de forme conique pourvue d'au moins une bosse ou au moins un creux (26, 28, 30).

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