MILL-VENTILATOR Russian patent published in 2009 - IPC B02C13/00 

FIELD: technological processes.

SUBSTANCE: invention is related to mill - ventilators that grind fuel at heat power plants. Mill - ventilator comprises body, impeller, drive, feeding nozzle, inertial separator with exhaust nozzle connected to feeding nozzle by means of return flow and recirculation channel. Recirculation channel is located upstream return flow, at that it starts at separator wall. Angle of recirculation channel incline is not equal to angle of return flow incline and is selected depending on quality of ground material. At least one adjustable partition is available in recirculation channel.

EFFECT: simplified design, reduced metal intensity and wear, improved air recirculation, reduced cyclicity of finished dust in grinding process.

1 dwg