SU151626A1 - Shakhtna grain dryer - Google Patents

Description

Mine-driven grain dryers with a drying chamber operating with repeated heating and recycling of a part of the material are known, comprising a paddle hopper, a falling grain bed chamber, elevators for transporting grain, and a combustion device for producing a heat carrier.

The offered dryer is different from the known ones:

a) using conveyors that feed the grain either into the cooling chamber or at high humidity in the shoe of another elevator, into which the wet grain continuously enters so that the mixture of heated dried grain with cold wet enters the hopper to equalize the temperature and humidity;

b) using an intermediate grain cooling chamber located under the bunker.

Such an implementation of the grain dryer allows to intensify the drying process and prevent the reduction of the food and seed qualities of the grain.

The drawing schematically shows the proposed shaft dryer.

The dryer contains 1 to 2 elevators, a head-up bunker 5, a drying chamber 4 in which the intermediate cooling chamber 5 and three heating and drying zones 6, 7 and 8 are located. The dryer also contains conveyors I 0 and a cooling chamber 11. Heater-ventilation equipment not shown in the diagram.

The dryer works as follows.

The wet grain is fed by the noria 1 to the head of the silo 3 and from there to the drying chamber 4, in which it passes the intermediate cooling chamber 5 and the heating zones, 7 and 8.

After starting the dryer, the grain in the first period is fully returned to the drying chamber until the specified values for humidity and temperature of grain are reached. From this point on, a portion of the grain is released to the conveyor 10 and with the norium 2 fed to the cooling chamber 11 and from there to storage. Another part of the grain conveyor 9 returns to the boot of the elevator /, where it is mixed with the added cold grain (equal in quantity to the grain fed into the cooling chamber) ,.

The grain mixture is again fed into the head of the silo 3, passes the intermediate cooling chamber 5 and zones 6, 7 and 8 of heating and drying. Thus, the continuity of the drying process with partial grain recirculation is ensured.

The proposed device can be dried, implemented in the system of production and harvesting of agricultural products, to modernize existing ones and to design new types of mining grain dryers.

Subject invention

Claims (2)

1. A chiller dryer with a drying chamber that operates with repeated heating and recycling of a part of the material, containing a slab hopper, elevators for transporting the grain, and a combustion device, characterized in that transmitting the grain either to the cooling chamber, or with increased humidity to the boot of another noria, into which the wet grain is continuously fed so that the mixture of heated dried grain with cold wet enters the bun ep alignment for temperature and humidity. 2. In the grain drier of claim I, use an intermediate grain cooling chamber located under the bunker to prevent deterioration of the food and family qualities of the grain.