The automatic feeding system (e.g. dosing container with weighing device) reads the weight value at regular intervals, and the difference between the two weights is used to calculate the reduction per time unit (instantaneous flow rate). The weighing controller compares the actual measured value with the preset flow rate value, and at the same time controls the rotational speed of the auger feeder to regulate the feeding volume. When the weight of the material in the hopper reaches the minimum set value, the charging valve will be opened automatically to carry out the periodic charging operation. In order to ensure the correctness of the weighing results, an appropriate filter can be selected to filter the weighing signals during the measurement process.

The human-machine interface of the feeding system is developed based on the operating system, which can meet the requirements of monitoring and controlling the production process as well as archiving and processing the production data. The user interface drawn by WinCC is simple and easy to operate with a good human-machine interface, which can dynamically display the operation status of various equipment on the site and the various parameters of the dosage operation. The operator can also flexibly control the starting and stopping of the field equipment and change the operating parameters of the dosage according to the needs.

Semi-automatic batching system can complete the required control tasks by communicating with each slave machine, and it should also have the functions of real-time display of working conditions, formula optimization and management consulting, etc. The data between the host and each slave machine can be used as the data source of the batching system. The data exchange between the host and the slaves and the real-time display module for the control of the slaves are realized. The host issues cycle commands to the slaves, enters into the dosage cycle process, receives the working condition information from the slaves in turn. Real-time dynamic display, and according to the corresponding control program to send control commands to each slave.

The automatic feeding system introduces advanced industrial control computer machine and PLC and DCS system, adopting decentralization, networking and intelligence to ensure the reliability and long-term stability of dosage. Adopting transfer pump to realize liquid dosage with kettle as the control unit, each kettle is set up accordingly to set the recipe boundary for different recipe feeding and conveying, which can flexibly cope with the demand of different recipes for different production batches of tasks.