Design and fabrication of chemical mixing systemusing PLC
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Date
2014
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University of Management and Technology
Abstract
Conventional methods of mixing system of different liquids or chemicals can be costly, both in terms of time and product waste due to either overflow or spillage or improper fraction of substances mixed. In addition, most methods depend on a high level of human influence and manual control, which can present health and safety hazards, as well as non- conventionalism to allow for trade requirements. By applying these methods one cannot achieve high accuracy of fixed chemical ratio. In chemical industry the fixed ratio and proportion maintenance is extremely paramount because without keeping this ratio, our product will be changed and this is not desirable. To increase the reliability and flexibility of these processes a high level of automation is required. If we do this process manually it takes lot of time and manually we cannot maintain the specific ratio.
An automated system model is designed in such a way that it can mix three solutions in a fixed ratio. We have four menus and each menu has ability to fill up to three bottles. The solution will be mixed in a container. The liquid flow is controlled via PLC and it flows through solenoid valves. There is photoelectric sensor to detect the presence of a bottle. Bottle moves on a conveyor belt that is controlled by PLC.
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BS Thesis, Electrical Engineering