Multi-stage vertical turbine pump with comminution

Details Multi-stage vertical turbine pump with comminution Multi-stage vertical turbine pump with comminution

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
patent: 4409504 (1983-10-01), Wilson et al.
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

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