The automatic feeding system is equipped with manual control buttons and indicator lights for each process step, reaction tank and start button. Users can press the buttons on the operator panel or directly click the start button on the computer screen with the mouse, the reaction tank can be manually or automatically start the corresponding production line to start production. Before each production can be set to enter the recipe for this dosage, the reaction pot proportionally allocated to the number of raw materials required (can also be used by default, i.e., still use the last recipe). Provide data basis for automatic feeding. At the same time when the system starts production, the PLC sends the dynamic metering start signal to the weighing instrument, which starts to collect and display the weight of each link, and adopts the fast feeding and slow feeding strategies at different weight stages, in order to take into account the improvement of efficiency and metering accuracy. When it reaches the target value, it outputs a signal to stop metering and closes the related valves and pumps under PLC control. At the same time to complete the unloading to the kettle action, the Electronic scale measuring instrument automatically zero tare.

After the automatic Dosage system is started, PLC will automatically control the sequence of opening the pneumatic valves of each raw material and weighing loading valves, and at the same time start the loading motors, automatically close the loading valves and motors at the end of dosage, open the unloading valves and stirring motors, the raw materials start to be unloaded, and the reactor starts to stir, and at the end of the stirring of the reactor, the system will open the reactor unloading valves and unloading motors, and the finished products are transferred to the finished product tanks, and the dosage will be finished. Filling workers can start the Filling machine and operate the barrel filling process. The dosage process can also be operated manually by the operator according to the process requirements by pressing the valve and motor buttons on the operating table. The automatic dosage process is started when the external operation input signal is valid during the stop or pause state. Pressing the start button, the system instrument starts and the weighing instrument is cleared to zero. Then give the raw material fast feeding and slow feeding valid signal, the system opens the valve to start the material pump, start the fast feeding process (i.e. open two feed valves at the same time), at the same time, the instrument starts to track and read the load cell signal at any time, when the weight is close to reach the preset value of the big casting, the instrument will turn off the fast feeding signal, so that the system enters into the material slow feeding process (close one valve), at the same time, the instrument continues to track and read the load cell signal, the instrument will determine the weight of the material, and the system will start to operate in the manual dosing process. At the same time, the instrument continues to track and read the weighing sensor signal at any time, the instrument will determine whether the weight of the hopper is greater than or equal to the target value - 1# material drop value. If it is greater than or equal to, the instrument will close the small cast signal and stop the charging process (all valves and feeding motors are closed), and the measurement will end.

Sequentially complete the material feeding process, the instrument will display the weight of the four materials in the hopper, the instrument output unloading signal, the system starts unloading process, when the weight in the hopper is equal to or less than the set range of the zero area, the instrument closes the unloading signal, and at the same time return to the stop state (running output is invalid, pause output is invalid). Completion of a dosage process. The initial value of the material fallout is set according to experience, and then the fallout value in the process of measurement adopts the self-learning way according to the actual measurement value, approaching the target value step by step, so that the error becomes smaller and smaller.