Impeller to draw seal lubricant from outside reservoir

Details Impeller to draw seal lubricant from outside reservoir Impeller to draw seal lubricant from outside reservoir

F - Mech Eng,Light,Heat,Weapons

04

D

103/120, 103/121

F04D 29/22 (2006.01) F04B 39/12 (2006.01)

Patent

CA 1193483

Applicant: Vaughan Co., Inc. Title: High Head Centrifugal Slicing Slurry Pump ABSTRACT A booster propeller is located at the inlet of a flared funnel leading toward arcuate inlet apertures in an end plate of a centrifugal pump casing. The pump impeller is received in a bowl capped by the end plate and has a circular shroud plate perpendicular to the axis with a first set of vanes or blades projecting toward the end plate and having cupped leading surfaces forming a sharpened edge. The drive shaft for the impeller extends through an annular seal at the axial center of the closed end of the bowl, and a reservoir of liquid lubricant is in communication with the exterior side of the seal. A second set of vanes or blades project from the shroud plate toward the closed end of the bowl and, when the impeller is rotated, result in suction toward the bowl being generated in the area of the seal tending to draw lubricant from the reservoir to the seal.

456140

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