Mixed-flow type rice dryer

Abstract

The invention provides a mixed-flow type rice dryer. The mixed-flow type rice dryer comprises a tank body and a hopper; the hopper is arranged on the tank body; the mixed-flow type rice dryer furthercomprises a conveyor belt mechanism, a mixed-flow tuyere, a lifting mechanism and a switching opening/closing door; the conveyor belt mechanism comprises a first conveyor belt and a second conveyor belt; the first conveyor belt is bent; the second conveyor belt is positioned below the first conveyor belt; the mixed-flow tuyere comprises a plurality of air inlets and an air outlet which are separately formed in two opposite side walls of the tank body; the air outlet is formed between every two air inlets in the horizontal direction; the lifting mechanism comprises a center rod arranged vertically, spiral blades surrounding the periphery of the center rod, and a barrel; an opening is formed in the barrel; and the switching opening/closing door is rotationally arranged between the first conveyor belt and the second conveyor belt. Compared with the prior art, the mixed-flow rice dryer can enable food particles to be heated more uniformly, enables the crack rate of rice to be reduced, andincreases the head rice yield, and through ingenious design, the space is reduced, the cost is reduced, the operation steps are decreased, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of drying and processing of rice, in particular to a mixed-flow rice dryer. Background technique [0002] After the rice is harvested, the water content is very high. In order to make the rice reach the conditions of safe storage (not mildew), the moisture content of the rice must be reduced to a safe moisture for storage (ie 12% is the safe moisture for rice storage). Compared with the drying of other grains, rice is a heat-sensitive crop, and the drying speed is too fast or the parameters are improperly selected, and it is easy to cause the waist to burst. And the structure of rice is different from other food crops. Rice grains are composed of hard shells and rice grains. The shells play a protective role on rice, so rice is easier to preserve than rice. However, when rice is dry, its outer shell acts as a barrier to the transfer of moisture from the inside of the grain to the outside. [0003] The dryi...

AI Technical Summary

Problems solved by technology

[0002] The water content of rice is very high after harvesting. To make rice reach the conditions for safe storage (no mildew), the moisture content of rice must be reduced to a safe water for storage (that is, 12% is the safe water for rice storage), and rice is different. Compared with other grain drying, rice is a heat-sensitive crop. If the drying speed is too fast or the parameters are improperly selected, it is easy to cause waist burst.

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