Filling machines are part of the automatic filling of liquid products, many types of filling machines can be foam, viscous or paste compatible, and can be adapted to a variety of container types, such as bottles, bottles, etc. , bucket, jar. Filling accuracy is controlled by an Electronic scale, self-correcting and statistical. The container moves continuously in different operations (filling, capping, etc.), providing the filling volume. The product can be filled and fed by gravity or pump control, the pulse signal of the pipe flow is controlled by the metering module, the liquid weight of the actual discharge of the flow is obtained, and the motor operation is controlled according to the difference between the actual filling amount and the set value, so as to realize the accurate control of the filling amount according to the actual needs.

The filling machine is mainly composed of DC frequency conversion motor, centrifugal pump, weighing instrument including touch screen control box, filling machinery, cylinder filling gun, filter, pneumatic ball valve and so on. The control system is mainly composed of peripheral circuit, relay, potentiometer, weighing instrument and touch screen. By introducing the data of the weighing module into the control system and then controlling the operation of the motor, the real-time monitoring of the liquid discharge can be realized. The data of the weighing module is mainly collected. The data is displayed by the touch screen, the data is input by the potentiometer, and the stable operation of the system is controlled by the control relay and the solenoid valve. It includes main program, data acquisition subroutine, timer interrupt service program and liquid crystal display subroutine. After the controller enters the program control, it first detects the mode key to determine what working mode the system is in. The setting value of the filling is collected through AD, and then the relay is opened and opened. The pulse number of the weighing module is collected by motor operation and displayed on the LCD in real time. When the filling amount corresponding to the pulse number reaches the set value, turn off the relay to cut off the motor drive circuit. The control solenoid valve contact switch in the quantitative filling gun is kept normally closed to display the current filling volume.