Powder Classification via Fluidized Bed Gas Flow

The patent employs a fluidized bed chamber where gas flow suspends powder particles, enabling separation based on drag coefficients. This pneumatic approach replaces traditional mechanical sorting methods, achieving precise classification by size, shape, and density while maintaining operational simplicity through controlled gas flow dynamics

The system varies gas flow parameters to control the fluidization state and separation efficiency. By adjusting flow rate, pressure, and velocity, the system optimizes powder classification precision without requiring complex mechanical adjustments or multiple classification stages

The fluidized bed chamber uses gas flow to simultaneously suspend and separate multiple powder properties (size, shape, density) in a single continuous process. This eliminates the need for sequential mechanical sorting steps, achieving comprehensive powder classification without significant time penalty

The system separates powder particles based on their drag coefficients, which inherently segments them by size, shape, and density characteristics. The classification chamber divides the powder stream into distinct zones where particles of similar properties cluster, enabling efficient sorting without multiple processing stages

The system uses gas flow as the primary control mechanism, which can be regulated through simple flow controllers and pressure regulators. This pneumatic approach avoids complex mechanical adjustment mechanisms while maintaining precise control over classification parameters

The fluidized bed chamber performs multiple functions simultaneously: suspension, separation, and classification of powder particles. This multi-functionality reduces the need for separate operational steps and simplifies the overall system operation despite the advanced classification capabilities