Low-temperature-increase rice processing technical method

Abstract

The invention discloses a low-temperature-increase rice processing technical method. The low-temperature-increase rice processing technical method comprises the following steps that 1, the moisture ofunprocessed grain rice is detected before the rice enters a rice hulling machine; when the moisture of the unprocessed grain rice is lower than a first threshold and higher than a second threshold, the unprocessed grain rice is wetted with water through high-pressure air spraying in the rice hulling process, and meanwhile, a corresponding hull suction air amount is used for reducing the hulled rice; 2, a proper amount of air at a preset temperature is sprayed into a whitening chamber to reduce the increase speed of the outer surface temperature of the rice in the rice milling process, whereinthe preset temperature is lower than or equal to room temperature; 3, polishing is carried out. According to the method, during rice hulling, the unprocessed grain rice is wetted with water through high-pressure air spraying to guarantee that the unprocessed grain rice keeps proper moisture, and then rice breaking is reduced; during rice milling, the air with the temperature lower than or equal to the room temperature reduces the increase speed of the outer surface temperature of the rice through the whitening chamber, then the temperature difference between the outer surfaces and inner layers of rice grains is reduced, and the broken rice rate is further reduced.

Description

technical field [0001] The invention relates to the field of rice processing, in particular to a low-temperature rising rice processing method. Background technique [0002] In the process of rice milling, due to collision and tumbling, some or all of the cortex of rice grains is removed, and a certain amount of heat is also generated. Part of the heat is dissipated into the atmosphere through the components of the whitening room, the other part of the heat is lost with the evaporation of the water in the rice grains, and the other part of the heat is transferred to the inside of the rice grains, causing the temperature of the rice to rise. If the heat cannot be dissipated in a timely manner, it will cause a sharp rise in rice temperature and a large amount of evaporation of rice water, which will not only increase the load on the rice mill, but also reduce the compressive, bending and shear strength of rice grains. , resulting in an increase in the amount of broken rice an...

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Problems solved by technology

However, if the number of ventilation holes or ventilation grooves of the emery roller is too small, and the ventilation area is too small, the effect of cooling the rice grains and reducing the rice temperature will not be achieved, which will easily lead to the reduction of the compressive, bending, and shear strength of the rice grains, and cause a large number of On the contrary, if the number of ventilation holes or ventilation slots of the emery roller is too large and the ventilation area is too large, the amount of gas entering the whitening room per unit time will increase, which will cause the rice grains to collide violently and roll over. a lot of broken rice

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