Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1996-01-18
1997-08-12
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 37, 277152, 366 64, 494 38, F16J 1530
Patent
active
056557809
ABSTRACT:
A mixer seal assembly for a closable vessel having a dynamic mixer shaft seal in a bore in a vessel flange and a static seal for vessel transport formable by insertion of a disconnected lower portion of a fast connect coupling which is fast to install on the mixer shaft into the flange bore above the dynamic seal. The resulting seal assembly can seal the vessel for over-the-road transport. The dynamic seal includes a circular lip which sealingly engages the surface of the mixer shaft. The static seal includes an O-ring disposed in a first annular groove in the coupling portion. A shaft bushing disposed adjacent to the shaft seal in the flange bore minimizes shaft runout in the shaft seal and permits use of relatively rigid and dry running materials such as fluorocarbon polymer in the shaft seal. In the shut-off position with the coupling portion inserted into the vessel flange, a spring pin mounted in the vessel flange can engage a second annular groove in the coupling portion to lock the coupling portion in the flange bore. In an alternative embodiment for use in retro-fitting existing vessels, the vessel flange of the invention may be configured to sealingly conform to an existing vessel flange.
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Gambrill Jeffrey S.
Porter Larry G.
Stolpman Robert A.
Annick Christina
Cuchlinski Jr. William A.
General Signal Corp.
Lukacher M.
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