Weighing filling machine is a weighing filling, filling control, discharge and other computerized production process control and data management as one of the integrated automated filling control system, liquid filling machine using Mitsubishi Q series PLC and Advantech industrial control microcomputer to set up a high-performance control platform.

Weighing filler consists of feeding pump, solenoid valve, pipeline and weighing system. When the liquid level of the reaction tank is lower than a certain position, the solenoid valve opens, and the liquid flows into the dosing tank through the feeding pump and pipeline, and the solenoid valve closes when the liquid reaches the liquid level height.

The automatic filling machine can observe the weighing data through the meter head, in addition the profibus-DP bus transmits the weighing data to the PLC, which reduces the errors caused by interfering signals, transmission or conversion, and ensures the filling accuracy in production. Communicate with PLC through MPI interface, give all kinds of control parameters, control instructions, control the action of PLC; read the status information of PLC for the screen real-time dynamic display of the process of equipment status, weighing data, alarm information. The computer also has the functions of system security setting, filling management, production report inquiry and printing, scale zero calibration and scale parameter setting.

The liquid filling machine will send the empty barrel to the filling position and align the barrel mouth with the spray gun mouth. When the detection spray gun is in place, the bottom valve will be opened and the nitrogen filling valve will start to fill the dry nitrogen into the barrel through the filling mouth, so that the air in the barrel will be replaced by nitrogen, and the drying of the inner wall of the barrel can be accelerated to ensure the safety of filling. When filling with nitrogen, it should be ensured that the air in the container is completely replaced, and the specific amount of nitrogen can be adjusted by the controller time.