F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/120, 277/20.
F04D 29/08 (2006.01) C07D 251/70 (2006.01) C07D 487/04 (2006.01) C08G 18/38 (2006.01) C08J 9/00 (2006.01) C08L 79/04 (2006.01)
Patent
CA 1290981
Applicant: Vaughan Co., Inc. Title: Face-Type Shaft Seal With Shroud ABSTRACT The face seal of a centrifugal pump has a stationary seal component mounted on the pump casing and a rotary seal component rotatable with the drive shaft extending into the casing and connected to the inner rotary pumping member or impeller. The rotary seal component is biased against the stationary seal component by a resilient welded metal bellows assembly having its end portion opposite the rotary seal component clamped to the drive shaft. To protect the welded metal bellows assembly against abrasive life- shortening contact with particulates in the liquid being pumped, a rigid shroud is provided including a generally cylindrical cavity having an inner wall portion extending close alongside the bellows for at least substantially the full axial extent of the bellows.
591714
Smart & Biggar
Vaughan Co. Inc.
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