The process of batching is to transport the resin, carbon black, iron oxide and other raw materials from several raw materials warehouses to the measuring scale according to a certain proportion of the corresponding feeding equipment, and then feed the raw material into the raw material mill, the raw material is ground into the raw material mill, the grinding mixture enters the powder separator, and the selected fine powder enters the carbon black production follow-up operation, which can be controlled by the frequency converter to achieve variable speed feeding. The screw of the screw Feeder is variable pitch and diameter, and the crushing knife is added at the exit to ensure that the material is evenly added to the hopper. The screw control program is responsible for the control of weighing ingredients when feeding the screw feeder. Since the operation of the screw feeder is completely controlled by the frequency converter, and the weight information of raw materials needs to be obtained from the weighing module when batching, and then the weighing process is accurately controlled, the frequency converter control program and the batching algorithm program are called in the program, and the A/D interruption is processed. According to the raw material batching algorithm, the program is programmed to generate the discharge marker. When the initial value is 0, it means fast feeding. Discharge mark position is 1, turn to slow feed. Inverter control program to complete the screw feeder speed control.

The components of the Batching system mainly include measuring scale, PLC, screw conveyor, vibrator, touch screen and electromagnetic vibration feeder. According to the actual production process, the dosing system can calibrate the ratio of various materials at noon on the touch screen, in this process, the PLC system can read the relevant information of the weight of the material during operation, and can also discharge and weigh the material according to the electromagnetic vibration feeder started by the program. And when the batching starts, the electromagnetic vibration feeder will have a large vibration condition, which can facilitate the better and faster discharge operation. And when the material and the calibrated value are closer and closer, the vibration amplitude of the electromagnetic vibration feeder in actual operation can be reduced to a certain extent, and then the fine discharge operation can be effectively realized. When the material reaches the weight value set by the programmer, the discharge process will stop. In addition, during the operation of the batching automatic control system, the amplitude of vibration can be adjusted by frequency conversion whether it is fast or fine discharge. At the same time, the touch screen can display the actual weight of the material in real time during the process of weighing the material, and the accuracy of the material weighing can be controlled within the error.