The Feeding machine is mainly composed of DCS distribution control system, high storage bin, reduction scale, screw conveying mixer and other parts. The function of the whole system is to use the centralized and decentralized control mode composed of weighing terminal and PC operating station to store all kinds of ingredients in each storage bin in advance. Through the formula input function of DCS system, the setting operation data is accurately confirmed. After the reduction scale reaches the set weight target value, the feeding is stopped. After adopting PID closed-loop control, frequency conversion control and adjustment of reducing scale for sequential control, the materials are discharged according to the set ratio, and the materials are mixed and stirred in turn. After all of them are collected, the mixed materials are loaded into the hopper for batching process through the subsequent spiral conveying mixer.

The reduction scale is the key equipment for accurate control of the system, and its functions are described as follows: The formula is reduced from DCS to the scale controller, the controller confirms the formula feedback to DCS, the DCS issues the batch start command and the batch completion, the signal of the running/stopping state, the instantaneous and cumulative value, the frequency converter speed signal, the DCS issues the time synchronization command, etc., all of which are completed through the field communication bus. Weighing terminal has flow output, output of instantaneous value and cumulative value, calibration, drift correction, slow feed weight error correction, system interlocking, digital dynamic filtering technology, high-speed A/D processing technology, software anti-jamming and other functions, and has a communication port connected to DCS control system, DCS has data redundancy and fault tolerance processing technology and formula power off memory and fault interlocking function. On-site control has emergency shutdown and fault immediate alarm functions.

The programmed PC interface of DCS operation station is rich in functions, which can realize remote real-time monitoring and control of dynamic data through industrial Ethernet, ensure system reliability and dynamic measurement accuracy, and provide historical trend chart of batching data for query. The system is equipped with weighing instruments. Touch screen, weighing module, Feeder, inverter, feeding motor, low-voltage electrical device, industrial computer and other high-quality equipment, equipment performance is excellent, reliable operation.