The quantitative Filling system uses the principle of weighing to control the filling volume. The material flows into or is supplied to the container to be filled through a pump. Fast and slow valves are used to achieve fast and slow filling. At the beginning of filling, both the fast and slow valves are opened. When the filling reaches the preset quantity for fast filling, the fast valve is closed, and the slow valve continues to fill slowly until the set overall filling volume is reached. The double-section filling cylinder is used to ensure fast and slow filling. At the beginning of filling, the double-section cylinder is switched to fast filling, and when the filling reaches the preset quantity for fast filling, the double-section cylinder is switched to slow filling until the set overall filling volume is reached. The travel of the double-section cylinder can be adjusted to be adjustable, and the flow rate during slow filling can be adjusted according to the viscosity of the material to precisely control the filling accuracy.

The discharge port of the automatic Filling machine adopts a multi-arc surface design, which has a good buffering effect, ensuring that the material does not splash during filling. The stopper and the discharge port are processed as a whole, ensuring that there will be no dripping or leakage after the stopper is closed. The bottom of the stopper adopts an凹面 design， combined with the surface tension of the material liquid molecules， ensuring that the bottom of the stopper will not be contaminated with material when closed， further avoiding material dripping. A receiving tray is provided， and after filling， the receiving tray extends below the filling head to prevent the material from dripping onto the machine surface， ensuring the cleanliness and tidiness of the equipment. All the seals of the valves and interfaces use polytetrafluoroethylene， which allows for sudden cooling and heating， or alternating cold and hot operations. The structure of this machine is reasonable， the performance is reliable， the filling volume is accurate， and it can be operated by one person. The operator places the barrel on the empty barrel temporary conveyor area， and the production line automatically controls the barrel insertion， automatically fills， and after filling， automatically transports the barrel to the full barrel conveyor area. When the operator transfers the barrel to the product storage area， it is particularly suitable for use in environments with explosion-proof requirements and in damp conditions. It has high safety. The material contact parts are made of high-quality 304 stainless steel. The filling volume and filling speed can be adjusted arbitrarily within the model range according to user needs. The filling accuracy is high.

The Liquid filling machine uses an Electronic scale to generate gravity， which is converted into voltage or current analog signals by the weighing module， then amplified and filtered， and converted into digital signals by the A/D processor. The weighing instrument processes and controls the display screen to show the weight value in digital form and determines whether the filling volume has reached the preset value. When it does， it sends a signal to the electromagnetic valve to close the valve， completing the filling of the current barrel and achieving quantitative control of the filling volume. It changes the previous method of controlling gross weight (gross weight plus filling volume) to automatically close the valve for filling volume control. The barrel gross weight is less than the lower limit， the valve does not open， and the filling gross weight is greater than the upper limit， the valve is cut off to prevent secondary filling. It has an anti-cheating function to prevent overfilling. Automatic zeroing. When the empty barrel is placed on the scale surface， the data is reset to zero， achieving the zeroing function. There is no need to separately weigh the barrel gross weight and record the gross weight. Filling and zeroing are completed at once， reducing the operation steps. When the set weight value is reached， the valve is automatically closed and an audible and visual prompt is given. The number of filled barrels and the total weight are viewed. The filling speed is automatically tracked， and calibration (reduction or compensation) is automatically performed. During filling， any slight lifting of the barrel or pressing of the barrel by hand will automatically close the valve to ensure safety. When the barrel is detached from the scale surface， the valve is automatically closed or does not open on the scale surface， ensuring filling safety.

The weighing filling machine is based on an Ethernet communication weighing instrument. It communicates via Ethernet TCP/IP， and the main body of the weighing instrument has an Ethernet port. It is directly connected to the upper computer via an Ethernet cable. Before uploading the weighing data， the IP of the electronic scale needs to be set first. The weighing data will be transmitted to the upper computer's software for the designated database. Ethernet is mainly used to receive the series of weighing data. Click the "Settings" button to enter the configuration manager interface， where the storage location， IP， etc. of the uploaded data can be set. The weighing data is uniformly stored in the Access database, and the storage location is fixed at a certain position (set as the D drive). Once the database file and related information are set, they will be displayed in the list. Clicking the "Exit" button will return to the main interface. In the filling system with RS232C communication, this Ethernet communication software is directly called, and the data in the database storing Ethernet data on the D drive is combined with the data from other databases to complete the combination of RS232C communication and Ethernet communication.