Grain fresh keeping method

Abstract

The invention discloses a grain fresh keeping method, which comprises the following steps: detecting the temperature, humidity and oxygen concentration of air in a granary; when the oxygen concentration in the granary is greater than a set value, introducing nitrogen or carbon dioxide into the granary; when the temperature in the granary is deviated from the set value, introducing cold or hot air into the granary so as to adjust the temperature of the granary back to the set value; and when the humidity in the granary is deviated from the set value, adjusting the humidity in the granary to the set value. Through the method, the oxygen concentration, humidity and temperature of the air in the granary are controlled respectively to make the granary in a hypoxic, constant humidity and constant temperature state to further restrict the breath of grains, so the metabolism of the grains can be maximally slowed down on the premise that the grains are kept in normal life processes, the maturity of the grains is maximally prolonged and the aims of storage and fresh keeping are fulfilled.

Description

technical field [0001] The invention relates to the technical field of grain preservation, and more specifically, relates to a grain preservation method. Background technique [0002] The food problem is one of the urgent problems that attract worldwide attention. my country, as the most populous country in the world, consumes a large amount of food every year. Only with food can a country develop industry, national defense, service industry, scientific and cultural undertakings in a stable and healthy manner. The food issue is not only an economic and people's livelihood issue, but also a development and security issue. With the rapid development of green food and the continuous improvement of people's living standards, green grain storage technology has made great progress in our country. Under the guidance of "China's Grain Storage Ecosystem Theory System", my country's grain storage concept is undergoing profound changes. Grain storage technology is developing from trad...

AI Technical Summary

Problems solved by technology

[0009] 1. Controlled atmosphere storage only handles the oxygen content in the granary, but does not control the temperature and ambient humidity that affect the plant cell respiration, so it cannot suppress the respiration of the grain to the greatest extent, prolong the storage time of the grain, and keep the freshness of the grain Spend

[0010] 2. Grain cooling and low-temperature storage of grain also only control the temperature in the granary, and intelligent automatic detection and control have not yet been realized. Lu and other issues have not been reasonably resolved

[0011] 3. The use of centrifugal fans for mechanical ventilation and grain storage requires a large unit of power consumption, and there are dead angles in the ventilation. It is difficult to choose a reasonable wind speed for different grain piles, and it is difficult to achieve a good grain preservation effect.

[0012] 4. Phosphine circulation fumigation prevention technology In the long run, pests will develop resistance and residual poison will remain. There are safety hazards in workers' operation and the cost will increase year by year.

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