The star unloader, also known by its versatile names such as the unloader, rotary feeder, or air lock valve, is a sophisticated and integral part of many industrial processes. Its ingenious design comprises a rotor impeller that features several blades, a robust shell, precision sealing parts, a reliable reducer, and a powerful motor. This device excels in handling materials from an upper silo, where the material is methodically fed into the gaps between the blades by gravitational force. As the blades rotate with precision, the material is efficiently discharged from the upper part, ensuring a seamless and controlled flow. Consequently, the star unloader is capable of providing a consistent and quantitative discharge of material, making it an essential component for maintaining continuous operations in industries requiring precise material handling.