Motor driven pumps

Details Motor driven pumps Motor driven pumps

1987-10-27

1991-04-23

Smith, Leonard E.

Pumps

Motor driven

Axial thrust balancing means for rotary pump and motor

417370, F04B 3504

Patent

active

050095781

ABSTRACT:
Motor driven pumps are provided of the canned, or isolated stator type which include a center shaft, rotating shaft support bearings, controlled cooling, and automatic thrust balancing construction, utilizing fixed orifices. A snubber is carried on the shaft at the shaft end opposite to the impeller. The snubber has an en surface which faces an end liner plate. Thrust balancing is achieved by axial movement of the shaft which permits fluid flow between the end liner plate and the snubber.
A snubber is carried on the shaft at the shaft end opposite to the impeller. The snubber has an end surface which faces an end liner plate. Thrust balancing is achieved by axial movement of the shaft which permits fluid flow between the end liner plate and the snubber.

REFERENCES:
patent: Re26438 (1968-08-01), White
patent: 2982224 (1961-05-01), Williams
patent: 3220350 (1965-11-01), White
patent: 3276390 (1966-10-01), Bloodoff et al.
patent: 3460843 (1969-08-01), Jaeger
patent: 3510230 (1970-05-01), Raub
patent: 4115038 (1978-09-01), Litzenberg
patent: 4234293 (1980-11-01), Lightle

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