REGULATOR OF AIR FLOWS Russian patent published in 1994 - IPC

FIELD: distribution of air flows in mine workings. SUBSTANCE: air flow regulator has flap of streamline shape with widened front and narrowed rear parts. Flap is secured to working wall by means of hinge and flexible tie. Accommodated inside flap is distributing chamber having branch pipe, union for compressed air supply and flexible hose. The latter communicates distributing chamber located in front part of flap to union located in flap rear part. Compressed air getting into distributing chamber comes out of its slots, flows about upper and lower parts of flap, changes and stabilizes its position. EFFECT: higher efficiency. 1 dwg