Pump having seal means and protective means

Details Pump having seal means and protective means Pump having seal means and protective means

1977-10-27

1979-05-01

Croyle, Carlton R.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

415197, 415200, 277 25, F04D 2908, F04D 702

Patent

active

041520963

ABSTRACT:
An impeller type pump has a pump body consisting of a front casing and a back casing. Each of the casings comprises a ceramic main portion and a protection member covering the main portion. The protection members of both the main portions are interconnected with each other at their confronting marginal portions through a continuous packing. Those confronting marginal portions of both the main portions which are adjacent to a pump chamber defined by inner surfaces of both the main portions are provided each with a plurality of concentrical rims loosely interdigitated to form a labyrinthine narrow passage restricting the flow of waste water therebetween, resulting in reduction of wear of the packing.

REFERENCES:
patent: 440798 (1890-11-01), Webbe
patent: 2107260 (1938-02-01), Ihara
patent: 2283263 (1942-05-01), Kates
patent: 2347386 (1944-04-01), Adams
patent: 2536638 (1951-01-01), Greene
patent: 2976809 (1961-03-01), Buschhorn et al.
patent: 3115097 (1963-12-01), Zagar et al.
patent: 3265002 (1966-08-01), Warman

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