AERODYNAMIC CLASSIFIER Russian patent published in 2005 - IPC

FIELD: separating solid materials.

SUBSTANCE: aerodynamic classifier comprises cylindrical housing with the lid provided with the branch pipe for discharging fine fraction and having the conical base that ends with the branch pipe for removing course fraction, branch pipe for supplying material, and shaft mounted inside the housing for permitting rotation of the working wheel having basic blades and additional blades mounted above the basic blades. The classifier is additionally provided with branch pipe for supplying material. Both of the branch pipes for supplying material are secured to the lid of the cylindrical housing along the radius of the action of the additional blades and mounted for permitting steady supply of material. The axis of the working wheel is shifted parallel to the axis of the cylindrical housing at a distance of (0.1-0.25)D_w, where D_w is the diameter of the working wheel. The top section of the working wheel is provided with a cylinder whose height is no less than that of the additional blades and rigidly connected with their face by its outer side. The branch pipe for discharging fine fraction is coaxially mounted inside the cylinder with a spaced relation for free rotation. The conical base of the cylindrical housing is rigidly connected with the cylindrical hollow collector that receives diffuser whose top section enters conical base of the cylindrical housing, with smaller base being plugged. The diffuser is rigidly connected with the housing of the collector through branch pipes that connect the space of the collector with the space of diffuser. The branch pipe for discharging coarse fraction is secured to the base of the collector.

EFFECT: enhanced efficiency.

2 dwg