The reduction weighing and Feeding machine is mainly composed of a DCS distributed control system, a high-level storage bin, a reduction scale, a screw conveyor mixer and other components. The entire system function is to utilize a centralized and decentralized combined control mode composed of weighing terminals and PC operation stations. Through the formula input function of the DCS system, the various raw materials pre-stored in each storage warehouse are precisely confirmed to set the operation data. Once the reduction scale reaches the set weight target value, the feeding continues. Subsequently, PID closed-loop control, frequency conversion control, and adjustment of the reduction scale were adopted for sequential control. The materials were discharged according to the set ratio. The materials were mixed and stirred in sequence. After all the materials were collected, the mixed materials were loaded into the hopper by the subsequent screw conveyor mixer for the batching process.

The reduction scale is a key device for precise control of the system. Its function is described as: The formula is reduced from the DCS to the scale control instrument, the control instrument confirms the formula and feeds it back to the DCS, the DCS issues batch start-up commands and batch completion, operation/stop status signals, instantaneous and cumulative values, frequency converter speed signals, and the DCS issues time synchronization commands, etc. All these are completed through the field communication bus to carry out a series of batching operation processes. The weighing terminal is equipped with functions such as flow output, instantaneous value and cumulative value output, calibration, drift correction, slow feeding weight error correction, system interlock, digital dynamic filtering technology, high-speed A/D processing technology, and software anti-interference. It also has a communication port for connecting to the DCS control system. The DCS has data redundancy fault-tolerant processing technology, formula power-off memory, and fault interlock functions. On-site control features emergency stop and immediate fault alarm functions, etc.

The PC interface of the DCS operation station after programming is rich in functions. It can achieve remote real-time supervision and control of dynamic data through industrial Ethernet, ensuring the reliability of the system and the accuracy of dynamic measurement. It can also provide historical trend charts of batching data for query. The system is equipped with weighing instruments. The high-quality equipment such as touch screens, Weighing modules, Feeders, frequency converters, feeding motors, low-voltage electrical devices, and industrial computers have excellent performance and reliable operation.