QUARRY VENTILATION DEVICE Russian patent published in 2019 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry, in particular to a device for air supply to deep open pits. Device contains an elastic exhaust pipe with toroidal stiffness chambers, a vertical telescopic hollow shaft arranged in an elastic exhaust pipe, on which a wind wheel with curvilinear cavities and an impeller is fixed. At that profile of lower surface of impeller wing and profile of upper surface of curvilinear cavity of wind wheel form at combined movement cavity in form of narrowing cone of rotation, axis of which coincides with axis of telescopic hollow shaft. At that between the impeller and the wind wheel hollow shafts are made in the hollow shaft, and inlet openings are provided at the turbine level. Cleaning device made in the form of a pseudo sphere is located inside the vertical telescopic hollow shaft before the outlet openings and includes a chute arranged at the base of the pseudo sphere on the inner surface, which is connected to a sump, mounted on the outer surface of the shaft.

EFFECT: technical result consists in ensuring environmental safety during operation of a device for ventilating deep pits by eliminating contaminants released into the environment in the form of fine solid and droplet particles through outlet openings.

1 cl, 5 dwg