Low temperature drying method for raw grain

Abstract

The invention discloses a low temperature drying method for raw grain. The low temperature drying method for the raw grain comprises three steps of impurity cleaning, low temperature drying and cooling, specifically, the raw grain is dried by low temperature circulation air, and a wind temperature and a raw grain temperature are dynamically monitored by a temperature measuring device; and the windtemperature is controlled at 50-70 DEG C, the raw grain temperature is controlled to be not more than 40 DEG C, the moisture content in the raw grain is monitored by a water content measuring device,and when the moisture content reaches 13-14.5%, the drying is stopped. The low temperature drying method for the raw grain efficiently and uniformly enables unhusked rice with high moisture content to reach a safe storage standard through low temperature drying, the safe storage of the raw grain is ensured, and the freshness and taste value of rice are ensured. The phenomena of sundries mixing, non-uniform moisture removing of the rice, mildew and the like in traditionally manual air-drying of the unusked rice are prevented.

Description

technical field [0001] The invention relates to the field of rice processing, in particular to a low-temperature drying method for raw grains. Background technique [0002] The rice is entering the harvest season. Since the moisture content of the rice harvested from the field is between 18% and 25%, the rice harvested by the farmers must be dried. The traditional artificial drying of the rice depends heavily on the site and the weather, and the loss is large. Artificial drying mainly relies on sunlight drying. This traditional drying method is severely restricted by climate and site. At the same time, with the continuous deepening of the scale and intensification of rice production, harvesters are used in large quantities, and the amount of grain harvested per unit time is greatly increased. Some large planters and agricultural cooperatives are limited by the insufficient drying area, so that a large amount of fresh and wet grains harvested are piled up and cannot be dried ...

AI Technical Summary

Problems solved by technology

[0002] The rice is entering the harvest season. Since the moisture content of the rice harvested from the field is between 18% and 25%, the rice harvested by the farmers must be dried. The traditional artificial drying of the rice depends heavily on the site and the weather, and the loss is large.

Artificial drying mainly relies on sunlight drying. This traditional drying method is severely restricted by climate and site. At the same time, with the continuous deepening of the scale and intensification of rice production, harvesters are used in large quantities, and the amount of grain harvested per unit time is greatly increased. Increase, some large planters and agricultural cooperatives are limited to insufficient drying area, so that a large amount of fresh and wet grains harvested are piled up, and cannot be dried in time, resulting in mildew of rice

At the same time, the traditional artificial air-dried rice takes a long time to dry, the labor cost is high, the drying is uneven, the safe moisture content cannot be guaranteed, the breakage rate is high, and debris such as earth and stones are easily mixed in the drying process.