Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1996-07-30
1998-02-17
DePumpo, Daniel G.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 23, 277 24, 277 67, 277134, F16J 1540
Patent
active
057184364
ABSTRACT:
A flow controller or seal protector is positioned in a seal cavity of rotary fluid equipment to protect the shaft and seal from the effects of abrasives and entrained air. The protector has an annular ring member that is secured to the shaft for rotation therewith. A cylindrical member extends into the cavity from the outer peripheral edge of the ring member and in close surrounding proximity to the seal. At its free or open end the cylindrical member has an outwardly flared portion and flow inducing protrusions are provided adjacent that open end to help impart rotational flow to fluid moving within the seal cavity. Flow inducing vanes or vents may also be provided within the protector at the junction of the ring and cylindrical members. Heavy abrasives are moved along the interior of the protector to exit at the free end and to then be centrifuged outwardly and away from the seal. Air is centrifuged inwardly towards the back of the seal where it will do no harm.
REFERENCES:
patent: 776669 (1904-12-01), Mattice
patent: 2063738 (1936-12-01), Hedgecock
patent: 2960356 (1960-11-01), Tyce et al.
patent: 4428587 (1984-01-01), Forch
patent: 4531746 (1985-07-01), Amdall et al.
patent: 4872690 (1989-10-01), Dunford
patent: 4928979 (1990-05-01), Nagasawa
patent: 5167418 (1992-12-01), Dunford
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