Device for monitoring a ball grinder

Details Device for monitoring a ball grinder Device for monitoring a ball grinder

1996-05-31

1997-12-16

Noland, Thomas P.

Measuring and testing

Testing of apparatus

73 7, 73291, 2503571, 378 52, G01M 1900, G01N 356, G01F 23288

Patent

active

056987978

ABSTRACT:
The present invention concerns a device for monitoring a ball grinder having a cylindrical casing containing a mass of balls which, when the grinder is rotating at its nominal speed, takes up a position between two generatrices (1.sub.b, 1.sub.b') spaced by an angle between a minimal angle .alpha..sub.min and a maximal angle .alpha..sub.max and a mass of coal which, when the grinder is rotating at its nominal speed, takes up a position between two generatrices (1.sub.c, 1.sub.c') spaced by an angle .beta.. An electromagnetic wave emitter is disposed inside the grinder and at least one wave receiver is disposed outside the grinder. The receiver is associated with an electronic circuit for determining at least one parameter of the grinder selected from the quantity of balls, the quantity of coal and the wear of the cylinder.

REFERENCES:
patent: 4156992 (1979-06-01), Pichette
patent: 4404640 (1983-09-01), Dumbeck et al.
patent: 4577804 (1986-03-01), Astley et al.
patent: 4635858 (1987-01-01), Welch et al.
patent: 5224659 (1993-07-01), Gabardi

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