FIELD: mining industry. SUBSTANCE: balloon is manufactured with through cone duct and two-layer envelope with clearance. Its outer envelope is blackened. Space of balloon between envelope and cone duct is divided into sections filled in succession with helium and air. Sections with air are connected to system of feed and discharge of it. Platform of rotor is anchored to balloon and ventilation pipe with ropes. Ventilation pipe is anchored with the help of ropes along tangent line to outer surface of air balloon. EFFECT: improved ventilation efficiency. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| VENTILATION PIPE FOR BLEEDING GASES AND DUST FROM OPEN PIT | 0 |
|
SU1723409A1 |
| VENTILATION COMPLEX | 2000 |
|
RU2169269C1 |
| QUARRY-AIRING ARRANGEMENT | 0 |
|
SU883492A1 |
| DEVICE FOR PURIFICATION OF OPEN PIT AIR | 1990 |
|
RU2049918C1 |
| ARRANGEMENT FOR VENTILATION OF QUARRIES | 0 |
|
SU1161712A1 |
| DEVICE FOR VENTILATING PIT | 0 |
|
SU1760128A1 |
| METHOD OF AIRING OPEN MINES | 0 |
|
SU1521882A1 |
| METHOD FOR THAWING OF PERMAFROST ROCKS BY MEANS OF FILM | 1990 |
|
RU2066726C1 |
| APPARATUS FOR VENTILATING OPEN-CUT PITS | 0 |
|
SU1745948A2 |
| ARRANGEMENT FOR AIRING DEEP QUARRIES | 0 |
|
SU819357A1 |
