Dynamic classifier with hollow shaft drive motor

Details Dynamic classifier with hollow shaft drive motor Dynamic classifier with hollow shaft drive motor

1997-04-04

1999-03-23

Valenza, Joseph S.

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

110220, 110232, 464183, B04B 512, F16C 300

Patent

active

058847766

ABSTRACT:
A dynamic classifier for a coal pulverizer has an improved drive mechanism which is mounted on top of a pulverizer and concentric with the classifier axis of rotation and is directly controllable. The drive mechanism is a variable-speed DC or AC electric motor having a hollow motor shaft. The motor can produce classifier rotor rotational speeds of between 50 and 200 rpm. The classifier rotor is supported from the hollow motor shaft. A coal feed pipe passes through the hollow motor shaft and classifier rotor shaft into the pulverizer.

REFERENCES:
patent: 3651941 (1972-03-01), Imris
patent: 3914630 (1975-10-01), Lloyd et al.
patent: 4257880 (1981-03-01), Jones
patent: 4609251 (1986-09-01), Nakoaka et al.
patent: 5025930 (1991-06-01), Barthelmess
patent: 5120431 (1992-06-01), Cordonnier
patent: 5223757 (1993-06-01), Staub et al.
patent: 5263655 (1993-11-01), Giammaruti et al.
B&W Brochure, "The DSVS.TM. Rotating Classifier" published 1994.

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