Rotary grate for a solid fuel furnace

Furnaces – Ash receiving and handling devices – Fly ash disposers

Patent

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Details

110171, 110267, 110268, 110275, 110276, 110286, 110327, 110328, F23J 100, F23J 106, F23H 902, F23K 300

Patent

active

050277197

ABSTRACT:
The present invention discloses a rotary grate for a solid fuel fired furnace which allows ash, cinders and clinkers to be removed from the burning fuel mass, without reducing or stopping the combustion process. A plurality of parallel water cooled rolls supports the burning fuel mass. The rolls are grouped into pairs of rolls, each pair of rolls having a drive roll and a driven roll. Each pair of rolls are geared together such that rotation of the drive roll simultaneously rotates the driven roll. Each roll has a plurality of protrusions about the circumference thereof, spaced down the length of the roll. The protrusions pass, during rotation of the rolls, the protrusions on adjacent rolls in non-contacting relationship to crush any cinders, clinkers or other tramp material. This action allows ash and the crushed material to pass between the rolls to an ash collection area beneath the rolls. Each of the drive rolls are rotated by a reversible drive mechanism which incrementally rotates the rolls.

REFERENCES:
patent: 1797721 (1931-03-01), Erlich
patent: 1806178 (1931-05-01), Rathgeb, Jr.
patent: 1961098 (1934-05-01), Denker
patent: 2322283 (1943-06-01), Denny
patent: 2355101 (1944-08-01), Norman
patent: 4073244 (1978-02-01), Snowdon
patent: 4459921 (1984-07-01), Unger
patent: 4699070 (1987-10-01), O'Conner
patent: 4787321 (1988-11-01), Schnellbacher et al.

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