SHAFT FAN UNIT Russian patent published in 2019 - IPC E21F1/08 

FIELD: mining.

SUBSTANCE: invention relates to mining industry and can be used for ventilation of shaft and mines. Proposed plant comprises working and standby fans arranged vertically on platform in the form of rotary frame driven by rotary frame. Axial reversible fans are fixed in the rotary frame between the lower and upper support disks connected by the vertical axis. Each support disc has flanges for fixing fan housings and holes for air passage aligned therewith. Lower pin of vertical axis is installed in the rotary support device on the separation platform, which separates the space heater room from the heat point room, and upper pin of vertical axis is installed in bearing support on auxiliary frame, fixed in room of heater plant. On the auxiliary frame there is a fixed sealing platform with a fixed inlet header and an air passage located coaxially with the air duct diffuser fixedly installed in the heat point room. Plant is equipped with labyrinth-brush seals installed between the sealing platform and the upper support disk of the rotary frame, as well as between the lower support disk of the rotary frame and the separating platform.

EFFECT: reduction of metal consumption of the installation, simplification of the mechanism of main and reserve fans activation, exclusion of external cold air suction into the air channel, reduction of aerodynamic resistance of the installation and reduction of the scope of construction works.

1 cl, 3 dwg