The concrete mixing station is divided into four parts: sand and gravel feeding, powder (cement, fly ash, expansion agent, etc.) feeding, water and admixture feeding, conveying agitation and storage. After the mixer control system is powered on, it enters the operation interface of the human-machine dialogue, and the system performs initialization processing, including formula number, concrete grade, slump, production quantity, etc. The silo and the measuring bucket are tested according to the weighing. The output material is empty or full, prompting the operator to determine whether to start the agitation control program. Start sand and stone belt motor feeding to the measuring bucket; open the butterfly valve of the fly ash and cement tank, start the screw machine motor to transport the fly ash and cement to the measuring bucket; open the control valve of the water tank and the admixture tank to make the water and the additional The agent flows into the measuring hopper. After the measurement meets the set requirements, the metering bucket door is opened, the ingredients are mixed into the activated mixer, and the mixer door is opened at the set time, and the concrete enters the mixer truck that has been picked up.
1. Each cylinder, control valve and motor are operated according to the requirements of the concrete mixing process. The control of each cylinder, control valve and motor must be accurate, stable and reliable.
2. The control system has two working modes, automatic and manual, and the relationship between them is independent and mutually restrictive.
3. The system has good anti-interference ability and perfect alarm self-protection function.
4. By communicating with the computer, the system working status and fault alarm can be displayed.