SU1437656A1 - Shaft recirculating grain drier - Google Patents

Abstract

Invention m. B. used in agriculture and the bread production system. The purpose of the invention is to increase productivity. The dryer contains a shaft with rows of inlet and outlet ducts, an extra-dry bunker 4 with a vertical dividing wall 5 and a heat-air line. The shaft is divided by a vertical partition 9 into sections 7 and 8 of recirculation, drying and cooling. The partition 9 is placed in the same plane with the wall 5. In sections 7 and 8, through the row, a discharge semi-box 10 is additionally installed adjacent to the partition 9. The air distribution chamber has windows with louver flaps. A horizontal partition is installed in the discharge chamber at the border of the drying and cooling zones. Wall 5 is provided with overflow windows to the heating zones. Thus, t-ru heat carrier can be set depending on the heat resistance of the grain and its purpose. The mixture of the spent heat carrier and the outside air after the cooler, after having been cleaned of suspended vegetable impurities, is sent to the combustion apparatus. 2 Il. ID (L with:

Description

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The invention relates to grain drying devices and can be used in the agricultural and bread production system.

The aim of the invention is to increase productivity.

FIG. 1 schematically shows the proposed shaft dryer; in fig. 2 - the same, with a partially removed distribution chamber.

The dryer includes a convective preheater 1 consisting of a hopper 2 and a lock feeder 3, an undersize bunker 4, containing a vertical wall 5 with overflow windows, fans 6, recirculation sections 7 for drying and cooling 8, which are separated from one another by a partition 9 with attached tapping half box 10, distribution chamber 11 for heat transfer fluid coming from the combustion unit 12 to the zones 3, 14 and 15 of heating the grain.) equipped with horizontal 16 and vertical 17 partitions attached to the ducts and having heights y, approximately equal to half the height of the chamber, cooler 18, diverting chamber 19 for collecting the spent coolant into two compartments, the upper 20 and lower 21, the fan 22 installed in the collector 23, connecting the lower compartment of the chamber with the furnace, chip filter 24, Level sensors 25 in the nadiah bunker and dry grain bunker 26; louvre lattices 27, 28 and 29 with mechanisms allowing them to change their live section, installed in the distribution chamber 1 in the heating zones of the grain.

The drying process is carried out as follows.

The raw grain is sent to the preheater hopper 2 with the help of a sluice feeder 3, where it is mixed with recirculation, which generates the grain. The mixture enters the convective preheater 1, into which the heat carrier from the combustion unit 12 is fed in countercurrently. The heated and dried grain sludge from the preheater is directed to the head shaft 4 mainly in the sector located above the recirculation section. The grain level in the bunker 4 is controlled by sensors 25, and the grain enters the recirculation section through the bypass window in wall 5. The dried grain in recirculation section 7 is sent to hopper 2, where

mixed with raw, and the resulting mixture is sent to a convective preheater. In the drying and cooling section, the grain is dried to standard moisture, cooled, and sent to dry grain bunker 26. The heat carrier from the combustion unit through the distribution chamber II is distributed to the grain heating zones 13, 14 and 15, the temperature of the heat carrier at the entrance to these zones is regulated by flowing outside air through the louvre grills 27, 28 and 29, which have autonomous systems for changing the living section. Thus, the temperature of the coolant can be set depending on the heat resistance of the grain and its speed.

The exhaust coolant from zone 13 of the section recirculation section, ni, and the outer huzdu.x, after being cooled, m 18, which are sucked into compartment 21, are mined. The amount of water in N1 is 1 pairs in comparison with the spent carrier gas sucked from the upper zones 14 and 15 of heating the grain, therefore the mixture of the spent heat carrier and the surrounding air noc. Ie chill. for the purpose of ;-) the heat of the field is polius or partially, after having previously cleared BaBeHjCHHhix of vegetable impurities, sent to the combustion unit.

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The mine recirculation grain dryer, which contains pits with rows of supply and discharge boxes, connected to the distribution box, respectively: single and discharging chambers, a vertical drying section bunker, a wall and a heat-expelled main line, that, for the purpose of new productivity, each shaft is divided by a vertical non-city located in one 0 of the partition wall of the bunker into a rectification section and a drying section and oh, 1 of the rest, and new,: 1enyy diverting semi-boxes, adjoining the green area, disperse the air, 1n the camara has windows with louvre taps, in the diverting chamber on the border of the free-flowing and cooling zones the horizontal overpass is installed, and the separator- and the 6yiiKepa wall is equipped with a transom window.

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Claims (1)

Claim Shaft recirculating grain dryer comprising max 's with ^r rows of inlet and outlet ducts respectively connected to the junction and outlet chambers, nadsushilny razdelite'noy vertical hopper wall and the hot-air line, characterized in that, in order to increase performance, each divided vertical shaft a partition placed in the same plane with the dividing wall of the hopper on the recirculation section and the drying and cooling section, and in sections through a series of additionally installed tvodyaschie polukoroba adjacent the baffle plenum has windows with louvered dampers in the outlet chamber at the boundary of zones: final drying and cooling peregoodka set horizontal, and dividing the bunker wall is provided with a bypass window. 143765b