| 摘要 |
FIELD: mining. ^ SUBSTANCE: re-circulating ventilator installation includes a ventilator installed in a mine working, a shell and crosspieces. The shell is located between two crosspieces along the side of the mine working connecting air supplying and ventilating workings. The ventilator is assembled on one side of the shell, while the other side of the shell is closed with a shut-off damper. The ventilator is stopped and shut-off damper is closed, when a mine is returned to a normal mode of ventilation without partial repeated use of air. The gaps between the shell and crosspieces are leak proof. ^ EFFECT: upgraded reliability and efficiency of mine working ventilation with system applying partial repeated use of air. ^ 5 cl, 2 dwg |
