The automatic Filling machine is mainly composed of a piston rod, a piston cylinder, a spool and a positioning screw. The lower end of the piston rod is provided with a sealing ring, and the spool is processed with two mutually unconnected channels of 90 degrees. During installation, the suction port of the valve core is communicated with the discharge port of the cylinder. When the material is sucked, the feed channel is opened, the suction port is connected with the quantitative suction chamber, the piston rod is upward, and a vacuum is formed in the quantitative suction chamber, so that the material is sucked from the cylinder through the suction port into the quantitative suction chamber. Under the condition of good sealing, the volume of the material inhaled in the quantitative suction chamber should be a fixed value each time; During feeding, when the spool handle is set for feeding, the spool handle rotates 90 degrees under the action of the equipment control device, the feeding channel is opened, the feeding channel is closed, and the feeding port is communicated with the quantitative suction chamber. When the piston rod is lowered, the material flows from the quantitative suction chamber through the feeding port into the bottle placed under the feeding port. When the spool needs to be cleaned, the spool can be pulled out by removing the positioning screw.

Weighing and filling machine using WIN7 system platform, including report function, data storage and record function, tabulation and printing function, each production after the completion of automatic compilation of batching report, and record date, time, report number and the actual consumption of each material and other information; Composed of Profibus and ASI bus, the control system is responsible for filling valve gauge cylinder level control, tank filling level control, filling valve pneumatic control, filling Angle and time control, etc. A two-level computer control network composed of programmable controller and Electronic scale is connected to the weighing instrument, control computer, PLC, inverter and other intelligent equipment with high processing speed through the field bus. The most widely used PID regulation in industrial control is used for actual flow control. According to the flow deviation, the control quantity is calculated by using proportion, integral and differential. The speed of electronic scale is adjusted by frequency converter, and the quantity is adjusted so that it is equal to the set value.