Corn,wheat drying machine(grain dryer)as shanghai yongxian's main products,use the fair current drying technology, so called fair current dryer, which use the hot air as thermal medium to dry the grain. The internal is mainly composed by air ventilation and horns ventilation box, Outside the box filled with grain horns, grain, hot air flow of top-down by air ventilation quarter, down through the bread into the direction of the exhaust gas layers, horns box. Hot air and grain flow positive, called the mixed flow. Hot air through grain layer, heat and moisture have the heat transfer with the grain: hot air to food, make temperature increased, moisture food grains heated evaporation into the air and become waste discharge. Dry bread to the heat flow down slowly, after tempering period which food grain moisture inside layer temperature and precipitation, to reach even equilibrium. After entering the food, cooling, make the grain cool down to the storage temperature, and then discharge the grain by grain period.
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