Self-aligning shaft support

F - Mech Eng,Light,Heat,Weapons – 16 – J

Patent

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Details

F16J 15/56 (2006.01) F04B 53/14 (2006.01) F16C 23/00 (2006.01) F16C 23/04 (2006.01) F16J 15/18 (2006.01) F16J 15/54 (2006.01)

Patent

CA 2366840

A guide to support a shaft such as a pump pull rod (11) which is capable of both rotary and reciprocal motion. The guide prevents any misalignment of rod (11) damaging a seal, e.g. a stuffing box, held in space (24). Guide element (18) has central portion (19) and annular flange (25). Element (18) can move laterally with respect to housing (12) and can also pivot, along with the cap (15) of the housing (12), with respect to the lower portion (14) thereof. The latter is achieved via movements of part-spherical bearing element (28) and similarly shaped faces (26, 37, 38) of housing (12). Further seals (33, 34) prevent entry of pumped fluid into chamber (13).

L'invention concerne un guide de support d'un axe, tel qu'une tige (11) de pompe, capable d'exécuter un mouvement à la fois rotatif et alternatif. Ce guide empêche tout défaut d'alignement de la tige (11) pouvant endommager un scellement, par exemple un presse-étoupe, contenu dans un espace (24). Un élément du guide (18) présente une portion centrale (19) ainsi qu'un rebord annulaire (25), et il peut se déplacer latéralement par rapport à un logement (12) et peut également pivoter, en même temps que le couvercle (15) du logement (12), par rapport à la portion inférieure (14) de celui-ci. Le pivotement peut s'exécuter par des déplacements d'un élément palier partiellement sphérique (28) et de faces de forme similaire (26, 37, 38) du logement (12). D'autres scellements (33, 34) empêchent l'entrée, dans une chambre (13), du fluide pompé.

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