The saccharification process is the first and most complex process in the beer production process. It determines the type and quality of beer. The gelatinization process is an important link in the saccharification process. The discussion on its control methods and key points is of universal significance and necessary. This paper analyzes the control object - the gelatinization pot, designs and discusses the specific control strategy of the gelatinization pot from the software and hardware aspects. The programmable logic controller is used to collect and process the digital and analog signals on the spot and to control the actuators in real time. The industrial computer completes the monitoring, management and recording functions of the control process data. Specific solutions are given to the problems that often occur in the actual production process, and good results have been achieved in the actual operation process. [Keywords] Gelatinization pot; PID control; Programmable logic controller In the beer production process, saccharification is the most complex and important link, which directly affects the quality of the finished beer. The purpose of saccharification is to dissolve most of the internal dissolved substances of malt and auxiliary materials through physical and chemical measures, that is, through boiling, controlling temperature and pH value, and exerting the role of enzymes. Barley malt is the traditional main raw material for beer production, and most of them need to add auxiliary raw materials, including rice, corn, etc. Most domestic beer manufacturers use rice as an auxiliary material for production, and using corn as an auxiliary material can greatly reduce costs. Adding auxiliary materials can effectively reduce the protein content and the content of easily oxidized polyphenols in wort, thereby reducing the color of beer, improving the flavor of beer and the non-biological stability of beer, and can greatly reduce the cost of wort preparation. The gelatinization process of auxiliary materials is completed in the gelatinization pot.
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