Face seal with spiral grooves

Details Face seal with spiral grooves Face seal with spiral grooves

1998-10-14

2000-11-28

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 961, 277 96, 277399, F16J 1538

Patent

active

061524522

ABSTRACT:
The present invention provides a face seal with spiral grooves comprising: a rotating ring including a sealing face; a stationary ring including a sealing face; the face is confronted with the face of the rotating ring to form a circular interface having a circle center; the faces of the rings can rotate relatively to each other; two spiral groove sets are provided at least on one of the faces of the rotating and the stationary rings, wherein one set disposed on the high pressure side, i.e. at the upstream, and the other set disposed on the low pressure side, i.e. at the downstream; the spiral angles of these two spiral groove sets are opposite to each other; the radial length of an upstream spiral groove is greater than that of a downstream spiral groove; and an annular flat belt is further provided at the downstream of the downstream spiral groove set.

REFERENCES:
patent: 5201531 (1993-04-01), Lai
patent: 5398943 (1995-03-01), Shimizu et al.
patent: 5435574 (1995-07-01), Victor et al.
patent: 5529315 (1996-06-01), Borrino et al.
patent: 5713576 (1998-02-01), Wasser et al.
patent: 5847479 (1998-12-01), Wang

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