The automatic tank machine adopts the scheme of adjusting the actual flow control, and sets its parameters according to the operation mode of the inverter to achieve the purpose of automatically adjusting the speed. PLC Programmable controller In order to ensure the accurate and reliable action of each part of the filling process, the Filling machine controls each weighing module, relay, switch and solenoid valve through PLC program. The liquid filling scale uses a large Chinese screen LCD display, and is equipped with an external start, stop, and clear button operation. The weighing display completes the accumulation and display inside the weighing display after receiving the signal of the weighing module, and the required quantitative control value is set inside the weighing instrument. When the cumulative value displayed by the quantitative control instrument reaches the set quantitative control value, Quantitative control instrument output switching signal. At this time, the switch signal is used to control the canned valve installed on the pneumatic ball valve and the pipeline through the relay or contactor, so as to achieve the quantitative control effect.

The Weighing system is a combination of high-precision weighing module, filling device and weighing instrument to realize fast and accurate filling. It can provide different production site solutions, support two kinds of discharge modes, and support the automatic lifting function of the discharge tube motor. Filling and weighing instrument provides complete control functions, integrated touch display, production management, sensor acquisition and processing, product detection in place, alarm output and other functions, can meet the user's production control requirements, high integration. The weighing module is responsible for collecting the weight signal, and outputs it to PLC through the weighing instrument to complete the monitoring and setting of the filling operation page on the man-machine interface, setting the speed range of the inverter, the running state (filling/cleaning), the host switch, the filling speed and the output count. The operation of the main motor is controlled by the power button, the shutdown button and the man-machine interface setting button. The weighing sensor provides the filling weight signal for the controller, which corresponds to the filling valve to open the filling valve quickly and open the slow solenoid valve. The PLC determines the opening and closing state of the filling valve according to the operating position of the rotary encoder, and the bus transmits to the controller to open and close the filling valve, and the controller to set parameters, select the formula and recover the residue through RS485. After the filling is finished, a material recovery button is set on the filling weighing screen. There are residual materials around the filling valve body for recovery. After selecting the button, the recovery tank cylinder moves, and the residual materials enter the recovery barrel through the pipeline.