The hopper platform scale weigher is composed of a variable-speed spiral auger and a fixed weigher, forming a simple single-loop control system. Through the detection and feedback of the weigher, the instantaneous flow rate is compared with the set value, and the rotational speed of the spiral auger is adjusted in real time to achieve synchronization between the instantaneous flow rate and the set value. It is mainly used for supply control support, realizing the full automation control of batching, mixing, and the process. According to the pre-set raw material ratio and process configuration, it meets the requirements for high-speed automatic supply, achieving control of all material weighing and supply, to more accurately control the entire supply process and ensure the accurate execution of the formula. The touch screen of the weigher has an automatic correction function for the ratio. When adding materials, the deviation during the material addition process is monitored through the screen, and the subsequent material addition ratio is automatically corrected according to the ratio of the formula, to ensure the accuracy of the formula; it can be linked with the customer's production management system, through parameter setting, to determine the batching quantity automatically based on the production order situation, and the material is sent into the hopper scale by the screw, weighed and transferred to the hopper, waiting for the timing PLC gives a control signal to stop the feeding motor, opens the discharge port of the hopper scale, and delivers the raw materials to the mixer.

The hopper is uniformly and stably fed into the weigher weighing device by the screw conveyor, and the size of the material flow is precisely measured by the weigher weighing device and input into the control system for processing. The control system compares the measured flow rate with the set flow rate and uses the obtained deviation value to adjust the rotational speed of the screw conveyor to achieve the optimal operating state and quantitative feeding of the system. Through the weigher and the control system, the weighing changes of the hopper can be monitored in real time, and automatically adjusted according to the preset weighing control strategy. When the hopper stops at the explosion-proof weigher receiving position and the electronic weigher drives the valve through the weighing instrument to start, at this time, the hopper senses the proximity switch, and the weighing instrument sends a command for the screw conveyor to rotate forward, the PLC output enables the relay to be energized, the forward electromagnetic valve is energized to move slowly, the PLC receives the proximity switch's sensing signal and starts the acceleration relay of the PLC output, accelerates the feeding of the batching hopper, when the PLC receives the proximity switch's sensing signal, starts the deceleration relay of the PLC output, makes the conveyor decelerate, and finally receives the proximity switch's sensing signal to complete the transportation process from the receiving position of the screw conveyor to the electronic weigher, from the receiving position to the electronic weigher by the screw conveyor, based on the real-time status of the hopper, quickly calculates the optimal weighing value, and precisely adjusts the weighing of the hopper through the control valve. Through data mining and model optimization, the weighing control strategy is continuously improved, improving the stability and efficiency of the batching process.