Access door for coal crusher feed chute

Details Access door for coal crusher feed chute Access door for coal crusher feed chute

1990-04-25

1992-04-14

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With automatic control

241283, B02C 2500

Patent

active

051040484

ABSTRACT:
A coal crushing facility having a coal crusher with an inlet feed chute and a feeding mechanism interposed between the crusher and a storage hopper wherein a top wall of the feed mechanism discharge chute includes a hinged door which is responsive to backup of coal in the crusher inlet chute to open slightly and effect operation of a proximity switch to shut down the feed motor. The circuit for the feed motor control may have a manual switch interposed therein to effect restarting of the feed motor only at will. The door may be moved to a full open position to provide a large opening to bring into operation a hydraulic breaker for breaking up large chunk coal and unclogging the feed chute. The door may be moved between open and closed positions by a motor operated winch.

REFERENCES:
patent: 779205 (1905-01-01), Campbell
patent: 879581 (1908-02-01), Pettengill
patent: 1748046 (1930-02-01), Bullock
patent: 4082228 (1978-04-01), Paterson et al.
patent: 4449671 (1984-05-01), Martinez et al.
patent: 4529134 (1985-07-01), Williams

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