The weighing and mixing machine is inputted into PLC through 16-bit high precision A/D converter module, and PLC automatically controls the whole batching and weighing process, data processing and alarm output of the weighing system through programming. The data parameters and operation of dosage are directly controlled by touch screen interface. The weighing system is connected to the computer through a 485 communication module to form a network, and the computer monitors the system and processes the data.

Inverter mixer through the human group configuration monitoring system and PLC program to load into the weighing and batching truck materials for weight, flow control, so as to achieve accurate measurement and batching. As a dynamic continuous measurement and batching of the whole machine type automation control device, the system can also provide accurate measurement data and control means for the production control and management of various industrial sites.

The mixer is automatically or semi-automatically completing the proportioning, weighing, feeding and distributing of raw materials at each time until the required weighing/feeding times of each batch are completed. At this point, PLC has completed a series of operations and controls. Such as the following target value calculation, raw material target value calculation, parameter automatic correction, etc. The main screen of each raw material and its parameter setting window have relevant parameters displayed, which can be used as control reference by the operator.

The constant pressure mixer controls the metering equipment to weigh in turn until the specified n times of weighing are finished, and the CRT returns to the display state when it is 0 times. When weighing a certain time, if any equipment or control point of the feeder or feeding system stops weighing, PLC can keep the memory of the time and continue weighing according to the memory of the time. DCS+PLC+ local manual control mode is adopted. The feeding process is completed by PLC, and its temperature and pressure are monitored by DCS system.

The vacuum mixer runs Siemens WINCC monitoring software through the computer, communicates with the two communication ports of the programmable controller through their respective communication ports, and backs up each other. It can dynamically display the process flow of the entire production process, display the operation, failure and alarm status of each equipment, and display process parameters such as temperature, pressure, etc. And can set such as alarm value, timing parameters, weighing instrument parameters.

The weighing feeder records the weight data of various materials, which are stored in the database, and produces reports such as class report, daily report and monthly report according to these data. The system also monitors the high mixing temperature and silo temperature in real time, and has real-time curve tracking to monitor the real-time temperature of materials and silos and historical curve to query the historical temperature. The programmable controller not only completes the logic control of the whole production line, but also communicates with weighing instruments and temperature control instruments. Besides reading the weight data every time, it can also set the working parameters of each instrument to realize remote monitoring.

The charging machine adopts Siemens MMI software WINCC, and the system is mainly divided into four screens: process flow screen, parameter setting, centralized control, trend curve and report. In addition, in the process flow, there are main material feeding unit, dosing unit, vacuum feeding unit, mixing unit, finished material unit, pulse valve parameter setting, weighing instrument parameter setting, temperature alarm limit setting, motor current display, valve summary control, temperature alarm curve.

The weighing module, pressure transmitter, material level gauge, position switch on pneumatic valve, air pressure gauge, etc. in the automatic mixer are used to detect and monitor the working conditions. The three-way valve can be controlled by the touch screen to judge the warehouse selection. When the multi-warehouse pump transports a single warehouse, in order to prevent the material from flowing back, a partition valve should be installed above the warehouse.

The fully automatic mixer adopts an industrial computer with high protection level as the main control computer of the system, and a special filter screen is used in the computer ventilation and heat dissipation system, which can be cleaned or replaced regularly and can effectively remove the influence of dust in the air on the equipment. The weighing system is input into the computer system through the man-machine interface or computer network, and the computer control system automatically calculates the supply ratio of each raw material according to the detection data and the process formula, and then the PLC control system synthesizes the supply speed of each raw material supply system to accurately and continuously complete the raw material ratio according to the process sequence.