VORTEX GRINDER FOR CASCADE GRINDING Russian patent published in 2010 - IPC B02C13/14 

FIELD: technological processes.

SUBSTANCE: invention relates to technical facilities intended for production of dispersed powders, suspensions, emulsions, for fine and hyperfine grinding of materials, and may be used in chemical, food, medical industries, construction and other industries. Vortex grinder for cascade grinding comprises vortex grinding chamber with profiled side surface, solid bottom and diaphragm cover, coaxial spinning chamber arranged above grinding chamber, limited at the bottom with diaphragm cover of vortex chamber, adjacent side surface with nozzle of product discharge at the periphery and upper cover, through which along the centre with adjacency there is an inlet pipe arranged, being submerged with its lower end into grinding chamber, and device for spinning of bearing medium and initial acceleration of particles. To spin bearing medium and initially accelerate particles, a hollow rotor of centrifugal fan is used with solid lower disk, diaphragm upper disk and blades fixed between these disks, installed coaxially inside vortex grinding chamber, under pipe of particles supply, so that height of lower cut of inlet pipe relative to lower disk of rotor allows for adjustment, and outer diametre of rotor makes not more than 0.71 of inner diametre of vortex chamber.

EFFECT: invention makes it possible to reduce energy inputs and wear of grinding surfaces in process of materials grinding.

1 dwg