A kind of low-temperature rise rice processing technology method

Abstract

The invention discloses a rice processing method with low temperature rise, which comprises two stages of husking; low temperature rise rice milling unit for rice milling; one stage of classification for crushing, second stage of classification; and three times of polishing. Secondary grading husking: use one husking machine to deal with raw grain rice, and another one to deal with return husking, using KFM2525B low-temperature rising air jet sand roller rice unit, multi-machine light milling, strong air jet, multi-point Into the wind, the whitening room has a good effect of rowing bran, reducing the temperature difference between the outer surface and inner layer of rice grains. Before polishing, carry out grading and crushing once, grading twice, and polishing three times: pregelatinization and gelatinization of starch on the surface of rice grains, starch gelatinization to make up for cracks; MPGU-50K / 60K rice polishing machine, sprayed by high-pressure air Water can ensure that the surface of all rice grains is smooth and clean. The air suction system reduces the humidity and temperature of the rice, making the surface of the rice smooth and clean. Three times of polishing can effectively slow down the temperature increase of the rice grains and reduce the rate of rice breakage.

Description

technical field [0001] The invention belongs to the field of agricultural product processing, and in particular relates to a low-temperature rising rice processing method. Background technique [0002] The existing mechanized equipment processes paddy into rice, all of which adopt a one-stop processing method, that is, use a one-stop production line to complete the process from paddy to finished rice in one go. During the rice, polishing, grading and other processes, due to the friction and collision of the rice grains, a large amount of heat will be generated, which will increase the surface temperature of the rice grains. Due to the poor thermal conductivity of rice grains, the heat transfer from the surface of the rice grains to the inside is slow, so that the rice grains form a large temperature gradient (ie, temperature difference). A large temperature difference will generate thermal stress in the rice grains, and the thermal stress exceeding the inherent strength of ...

AI Technical Summary

Problems solved by technology

Aiming at the problem of vicious cycle of brown rice recycling and re-husking in the traditional process, resulting in more cracked rice and more broken rice, this invention uses one rice huller to process raw grain rice, and the other one to process recycled rice. The pressure between the rollers is used to process the above two types of grains with different structures, which avoids the problem that the surface temperature of the rice grains rises too fast and the number of broken rice increases due to the re-hulling of brown rice.