The automatic filling gasoline Filling machine is mainly composed of a weighing platform, support columns, ball screw, filling pipelines, filling guns, pot pressure, moving filters, ventilation devices, electrical control boxes, stepper motors, etc. The support columns support the entire filling mechanism, including the ball screw, stepper motor, filling pipelines, etc., forming the frame of the machine. The stepper motor drives the ball screw to lift the filling pipelines and filling guns, and during filling, the material is pressed into the packaging iron drums through the movable filter, filling pipelines and filling guns. Before filling, the spray gun usually lowers to a position closer to the bottom of the barrel, so that the nozzle of the spray gun remains above the average liquid level of the material throughout the filling process, which can effectively ensure that the material can be completely filled into the packaging cylinder and maintain consistent density of the material at different positions within the packaging cylinder. After filling, the spray gun should automatically and slowly rise with the increase in filling weight, and the rising of the spray gun is driven by the stepper system through the ball screw. 

The Liquid filling machine consists of a PLC control system, manual bucket placement, automatic measurement and filling. Press the control button of the filling machine, and the rotor pump motor starts to operate. At the same time, the nitrogen valve of the filling machine also controls and stops in turn according to the set time intervals. The valve's blowing sound can be heard at the site. If no sound is heard from the valve, the PLC should immediately stop the operation of the filling machine to ensure the safety of production operation. The packaging is done manually by placing the buckets. Press the switch, the bucket clamping device tightens the packaging bucket, the Electronic scale shows a weight of zero, rotate the measurement automatic/manual button to the automatic position, reset the measurement emergency stop switch (the button is not pressed), the weighing instrument controls, the filling valve at the top of the container is opened, and the automatic filling machine starts to add materials. After the measurement is completed, close the top filling valve, the system checks if the packaging bucket is in place, and after detection, the nitrogen valve relay and the blow bucket time relay open simultaneously, the filling is completed, the discharge nitrogen valve is closed, the bucket clamping device and the automatic unhooker open automatically, and the control conveyor chain machine sends away the PTA material bucket. At the same time, control the next container process. 

The automatic filling machine utilizes the change in the weight of the container caused by the electronic scale installed at the bottom to correspond with the change in its output voltage. The output voltage is added together through an adder to obtain the total weight of the materials in the container. By repeatedly comparing the measured weight with the set target value, the purpose of precise quantitative filling is achieved. The main steps are completed through the process flow, including weight calculation, control of solenoid valves, rotation speed control of the rotor pump, opening/closing of the top filling valve, opening/closing of the nitrogen valve, and opening/closing of the blow bucket valve. These control actions are carried out to achieve the filling process. The filling program is divided into coarse filling, medium filling, and fine filling control. The control is based on the difference between the current weight in the container and the target value. When the filling starts, coarse filling is used, which is fast. When the material in the container reaches a certain weight, medium filling is used, reducing the filling speed. When the weight of the material in the container is not much different from the target weight, fine filling is used to slowly allow the material to enter the container, achieving the purpose of precise filling.