Scrap metal fed system for a closed rotary kiln or heating oven

Details Scrap metal fed system for a closed rotary kiln or heating oven Scrap metal fed system for a closed rotary kiln or heating oven

1978-04-18

1980-11-18

Valenza, Joseph E.

Material or article handling

Chamber of a type utilized for a heating function and...

Charging of chamber

414200, 222450, 198532, 198557, B66C 1708

Patent

active

042342830

ABSTRACT:
A scrap metal feed system is described employing an endless conveyor having a surface for supporting materials thereon. The conveyor is equipped with lifters extending outwardly from the surface at periodic intervals. A first hopper feeds this conveyor and a second hopper at the inlet end of a rotary kiln receives the scrap from the conveyor. The conveyor extends horizontally beneath the bottom of the first hopper and then upwardly at an angle to the horizon less than eighty degrees and greater than fifty degrees and then terminates over the top of the second hopper. The conveyor is exposed to the interior of the first hopper as it extends upwardly at an angle to the horizontal so that material can move back along the conveyor to the first hopper as the conveyor is operated; as the material moves back to the first hopper a shearing action results which tends to break up large pieces of material and/or separate pieces of material which are adhering to each other. The material that remains on the conveyor is conveyed up the conveyor and is deposited in the second hopper. The second hopper is attached to a chute having two flapper gate valves within the interior of the chute which are coupled together such that when one flapper gate is in an open position the other is not. The coupling is achieved by rotating striker arm which sequentially abuts against a lever attached to the flapper gate valves and causes the valves to open.

REFERENCES:
patent: 1629968 (1927-05-01), Richards
patent: 2626066 (1953-01-01), Rasmussen
patent: 2721005 (1955-10-01), Lesnick
patent: 3365049 (1968-01-01), Raab
patent: 3410422 (1968-11-01), Carpentier
patent: 3592556 (1971-07-01), Campbell

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