Charging stage: In the initial state, the feed port is open, the discharge port is closed, and the warehouse is under normal pressure.
Materials enter the storage chamber of the AV pump through gravity or other auxiliary equipment (such as screw feeder).

Pressurization stage: The feed port is closed, and compressed air is introduced into the space above the storage chamber, causing the pressure in the chamber to gradually increase.
As the pressure increases, the material is compacted and forms columns with a certain density while maintaining good fluidity.

Discharging stage: The discharge port is opened, and the high-pressure gas pushes the materials to move along the conveying pipe until they are all discharged. During this process, the compressed air not only provides pushing force, but also prevents material from clogging.

Purge stage (optional): In order to ensure that the pipeline is unobstructed, sometimes a short purge is performed after discharging to remove the material remaining in the pipeline.

Cycle repetition: After completing a complete filling-pressurizing-discharging cycle, the system automatically resets to the initial state and prepares for the next round of operation.