Grain spreading and airing system and method

Abstract

The invention discloses a grain spreading and airing system and method. The method comprises the following steps: calculating the required cooling capacity of grains in a specified spreading and airing process according to the material characteristics of the grains in and out of a spreading and airing machine; setting refrigerant air inlet and outlet temperatures required by heat exchange according to the required cooling temperature of the grains, and calculating the refrigerant air volume according to the required cooling capacity; according to the refrigerant air volume, the refrigerant air inlet temperature and humidity and the local geographical condition parameters of system application, calculating the refrigerating capacity of a refrigerating system used for cooling air; and selecting equipment according to a calculation result to construct the grain spreading and airing system. According to the technical scheme, the refrigerating capacity of the refrigerating system for cooling air is calculated according to parameters such as the refrigerant air volume, the refrigerant air inlet temperature and humidity, the local geographical conditions of system application and the like, the accuracy rate of grain spreading and airing temperature control is improved, the standardization of the grain spreading and airing process is achieved, and the grain spreading and airing efficiency and process are optimized.

Description

technical field [0001] The invention relates to the technical field of industrial production, in particular to a grain drying system and method. Background technique [0002] During the liquor brewing process, the grain is in a high-temperature state before it enters the culture bed or fermentation tank, and cooling the grain is an essential process. However, the temperature accuracy after cooling has a greater impact on the subsequent saccharification or fermentation process. Too high or too low will affect the activity of microbial flora in the grain, resulting in too fast or too slow heating of the grain saccharification or fermentation process, and the final result The reasons are low liquor yield, poor wine quality, and lack of bouquet. Therefore, the precise control of temperature is of great significance, and stable temperature control is also one of the foundations for the standardization of final liquor production. [0003] The traditional cooling and airing metho...

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Problems solved by technology

[0010] The present invention mainly solves the technical problems that the original technical scheme has low accuracy rate of temperature control, it is difficult to realize effective air temperature regulation, and the technical problem of low degree of automation is difficult to realize standardized operation, and provides a grain drying system and method. The moisture content, specific gravity, conveying speed and other material characteristics entering and leaving the airing machine calculate the cooling capacity required by the grain during the specified airing process, and then set the temperature of the refrigerant air inlet and outlet required for heat exchange according to the temperature that the grain needs to be cooled. The required cooling capacity is used to calculate the air volume of the refrigerant, and according to parameters such as the air volume of the refrigerant, the temperature and humidity of the air inlet of the refrigerant, and the local geographical conditions of the system, the cooling capacity of the refrigeration system used to cool the air is calculated to improve the temperature control of grain spreading. Accuracy, realize the standardization of the grain drying process, optimize the grain drying efficiency and process

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