Rotary kinetic fluid motors or pumps – With cutter or comminutor for debris in working fluid
Patent
1998-05-04
2000-07-18
Look, Edward K.
Rotary kinetic fluid motors or pumps
With cutter or comminutor for debris in working fluid
4151212, 4174241, 241 4606, B63H 114
Patent
active
060898232
ABSTRACT:
An apparatus for reducing between-stage entanglement of fibrous materials around a rotating impeller drive shaft in a multi-stage vertical turbine pump includes a fluted sleeve on the rotating impeller drive shaft and a notched cutter ring fixed to a stationary inner wall of a lower pump stage for engaging with the fluted sleeve to comminute fibrous materials by shearing action between the notches and the flutes. If necessary, a discharge transition piece may be used to adapt the upper end of an upstream pump stage bowl to the lower end of a downstream bowl.
REFERENCES:
patent: 3643877 (1972-02-01), Zimmer
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patent: 4801244 (1989-01-01), Stahl
patent: 5011370 (1991-04-01), Sodergard
patent: 5016825 (1991-05-01), Carpenter
patent: 5044566 (1991-09-01), Mitsch
patent: 5456580 (1995-10-01), Dorsch
Behnke Paul W.
Cronin Richard J.
Ingersoll-Dresser Pump Company
Look Edward K.
Palermo Robert F.
Shanley Matthew T.
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