The result showed that the air curtain could eject airflow in stead of auxiliaryfan, which raised the active volume and reduced the humidity of the airflow for main ramp.
结果表明多机并联空气幕能代替辅扇引射风流，提高主斜坡道内有效风量，降低风流湿度。
2
When auxiliaryfan without enough pressure used in shaft construction, it was possible to lead gas concentration. The powerful axial flow auxiliaryfan may solve the problem.
Taiyuan auxiliary boiler factory (formerly Taiyuan fan dust plant) is the development and production of environmentally friendly products and boiler auxiliary professionals Business enterprises.