A fully automatic anaerobic fermentation tank control device and control method thereof

Abstract

The invention provides an automatic anaerobic fermentation cylinder control device and an automatic anaerobic fermentation cylinder control method. The device comprises a PLC industrial control panel, wherein an input port X2 of the PLC industrial control panel is connected with a pressure relay, an input port X3 is connected with a liquid level sensor, an output port Y0 is connected with a drainage solenoid valve, an output port Y1 is connected with a sample adding solenoid valve, an output port Y 2 is connected with a filling solenoid valve, an output port Y3 is connected with a sample discharging solenoid valve, an output port Y4 is connected with a steam solenoid valve, an output port Y5 is connected with a test tube solenoid valve, an output port Y6 is connected with a stepping motor, the other end of each of the sampling adding solenoid valve, the filling solenoid valve, the sample discharging solenoid valve, the steam solenoid valve, the test tube solenoid valve and the stepping motor are all connected with a positive electrode of a power supply, and a negative electrode of the power supply is connected with a COM port of the PLC industrial control panel. According to the device and the method provided by the invention, a timer in the PLC industrial control panel is used for controlling time, so as to trigger an electromagnet to power on or power off to control the liquid level and the open and close of the solenoid valve, so that automatic sampling of the fermentation system is achieved, and the sample volume is accurate.

Description

【Technical field】 [0001] The invention relates to the field of food machinery, in particular to a fully automatic anaerobic fermentation tank control device and a control method thereof. 【Background technique】 [0002] Fermentation equipment is one of the most important equipment in microbial engineering. An excellent culture device should be designed to have a tight structure, good liquid mixing performance, high mass transfer and heat transfer rates, and reliable detection and control instruments. Get maximum productivity. According to whether the fermentation needs oxygen, the fermentation equipment is divided into aerobic fermentation tank and anaerobic fermentation tank. However, the practical application in production is mainly based on aerobic microbial fermentation, so there are the most types of aerobic fermentation tanks, and the research is the most thorough. There are few studies on anaerobic fermentation system. [0003] The workflow of the manual anaerobic f...

AI Technical Summary

Problems solved by technology

[0004] The sampling of existing anaerobic fermentation tanks is generally controlled manually, because the sampling interval is 2-6 hours each time during the experiment, so the sampling period is long, and the middle of a single test cannot be interrupted. Therefore, the experimental process is often 24 hours without interruption. Special personnel are equipped to take samples at regular intervals, and the sampling volume is also controlled manually, with large errors

Therefore, the current problems of sampling in anaerobic fermentation tanks are: long sampling period, difficult control of sampling volume, inconvenient sampling operation, etc.

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