Method and apparatus for drying grain

Details Method and apparatus for drying grain Method and apparatus for drying grain

1975-12-17

1977-05-03

Nilson, Robert G.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 31, 34 65, 34167, 34174, F26B 1712

Patent

active

040205614

ABSTRACT:
The grain is cleaned prior to heating. Then it moves downwardly as a column between perforated walls and is traversed by several airstreams of differing temperatures which provide three or more heating zones and a cooling zone. The temperature of each heating zone beneath the uppermost is less than that of the heating zone next above it. In the cooling zone, the air is drawn inwardly through the grain and into a duct by an exhaust fan. Any fines dislodged during cooling are filtered from the spent cooling air as it emerges from the exhaust fan. The filter is a fine mesh circular screen. A continuously rotating suction shoe removes the fines from the screen. The initial grain cleaning device has two concentric tumbling screens, one for collecting large particles and the other for screening out the fines. The fines are then conveyed through a heating zone and dried, and then run through a dust collector together with the fines from the filter.

REFERENCES:
patent: 1528696 (1925-03-01), Robinson
patent: 2764819 (1956-10-01), Hallman
patent: 3274699 (1966-09-01), Naylor
patent: 3400466 (1968-09-01), McClaren

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