Title:
PULVERIZER APPARATUS WITH HORIZONTAL AXIS PIVOT SCRAPER
Document Type and Number:
WIPO Patent Application WO1999054047
Kind Code:
A3
Abstract:
A scraper assembly (52) for use with an associated coal pulverizer (10) or as part of a coal pulverizer (10) having a vertical axis (16) with a central hub (61) that rotates during normal operation of the pulverizer (10). The scraper assembly (52) includes a bracket (54, 58, 60) dimensioned and configured for attachment to the hub (61) of the coal pulverizer (10) that rotates in the normal operation of the coal pulverizer (10). The apparatus (52) also includes a shaft (56) extending from the bracket (54, 58, 60). The shaft (56) is substantially horizontal and the apparatus (52) also includes a scraping element (72) pivotally mounted on the shaft (56). A torsion spring (76) biases the scraping element (72) with respect to the shaft (56). In some forms of the invention the scraping element (72) comprises a first (62) and second (64) journals engaging the shaft (56) at axially spaced points and the scraping element (72) further includes first (66) and second (68) arms extending radially away from the shaft (56) that are respectively fixed to the first (62) and second (64) journals. The apparatus (52) may further include a first plate shaped member (70) carried on the first (66) and second (68) arms and a second plate shaped member (72) removably attached to the first plate shaped member (70).
Inventors:
PRAIRIE ROBERT STEPHEN
PRZYBYCIEN RONALD PATRICK
PRZYBYCIEN RONALD PATRICK
Application Number:
PCT/US1999/006268
Publication Date:
December 23, 1999
Filing Date:
March 23, 1999
Export Citation:
Assignee:
COMBUSTION ENG (US)
International Classes:
B02C15/00; (IPC1-7): B02C15/00
Foreign References:
| US5480099A | 1996-01-02 | |||
| US4173177A | 1979-11-06 | |||
| US4192469A | 1980-03-11 | |||
| US5067662A | 1991-11-26 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 17, no. 355 (C - 1079) 6 July 1993 (1993-07-06)
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