Multi-deck screening assembly
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United States of America Patent
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Oct 3, 2017
Grant Date -
Aug 11, 2016
app pub date -
Feb 4, 2016
filing date -
Feb 6, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A multi-deck screening assembly includes a plurality of vertically-stacked downwardly-sloping screen decks, each with grading apertures through which under-sized material may pass, while over-sized material passes over a lower discharge end of each screen deck. The screen decks are mounted on a common frame, which is mounted on a chassis and provided with vibration device. The screen decks include an upper deck, an intermediate deck below for receiving under-sized material from the upper deck, and a lower deck below the intermediate deck for receiving under-sized material from the intermediate screen deck. A first chassis-mounted stockpile conveyor receives over-sized material from the lower deck, a second chassis-mounted stockpile conveyor receives over-sized material from the intermediate deck, and a third stockpile conveyor receives over-sized material from the upper deck. A transfer conveyor is operable to deliver over-sized material from the discharge end of the upper deck onto the third stockpile conveyor.
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