The storage tank is located at the upper part of the machine and is an atmospheric pressure tank with a liquid level sensor and a feed solenoid valve. The liquid from the traditional process of the fully automatic sesame sauce machine is placed into the tank through an electromagnetic valve. When it reaches the appropriate liquid level, a signal is sent out by the liquid level sensor, and the electrical control part controls the electromagnetic valve to close to stop the feeding. When the material level drops to a certain position, the feeding electromagnetic valve can be opened to feed again. The lower part of the storage tank has a discharge port connected to the suction pipe of the filling machine through a pipeline. When the machine is working, the liquid in the storage tank is drawn into the piston cylinder and then filled into the bottle through the nozzle.
The self machine is an important assembly for completing the filling action. The front of the self machine is equipped with several filling heads, and there are suction cylinders on both sides, with each cylinder corresponding to a filling head. The liquid in the storage tank is drawn into the cylinder, then pressed out for mobile application development, and filled into the corresponding bottle through the filling head. There is a miniature cylinder on the filling head that drives a small piston to open and close the nozzle of the filling head, acting as a valve. The entire filling head can rise and fall. When filling is about to begin, insert the nozzle into the bottle and open the small piston at a certain distance from the bottom of the bottle to start filling. The filling head is filled while rising until the filling is complete, then close the nozzle and raise it to the position of the bottle mouth. On both sides of the filling station, there are two small cylinders that drive two stopper rods, one located at the bottle inlet and the other at the bottle outlet. Their function is to assemble with the bottle clamp on the filling station to correctly position the bottle and align the nozzle with the bottle mouth.

The conveyor belt motor is controlled by a frequency converter to achieve continuously variable speed and achieve the goal of economic operation of the system. After the motor is started, the inlet cylinder retracts, and empty bottles are fed into the conveyor belt, starting to enter the bottles. Then the outlet cylinder extends, and the empty bottle sent in is blocked by the outlet stopper. A photoelectric switch is installed at the bottle entry point to detect the number of bottles entering. When the number of bottles detected matches the number of filling heads, the inlet cylinder extends to block the entrance and prevent bottle entry. The conveyor motor stops the process. At this point, the filling head descends to the bottle mouth to begin filling. After the filling is completed, the filling head rises, the outlet cylinder retracts, and the conveyor motor starts to rotate again, sending out the filled bottles. Then, the inlet cylinder retracts and the photoelectric switch starts to detect the number of bottles entering.