Based on the static and dynamic changes naturally formed during the storage and unloading of powder in the large warehouse, the gravity of the powder itself is cleverly and effectively utilized, and the material shrinkage, arching, and blocking mechanisms are broken down by using circular layered multi-point unloading. By utilizing the dual effects of external layered compression and internal vacuum adsorption, a dynamic three-dimensional adaptive flow field is formed outside the cone, achieving a natural overall flow of hard materials with priority and balanced discharge, and solving the huge risk of repeated cleaning in traditional large-scale storage and prevention technologies for 2-3 years.