Liu Zhi Special District Coal Mine Main Ventilator
Fan Installation and Maintenance
Thanks to their direct-drive design, this series of fans has relatively low requirements for the precision of the installation foundation. Even if the ground beneath the fan settles and causes a slight tilt (typically no more than 15°), the fan can still operate normally without affecting the mine’s safe and continuous production. Moreover, this series of fans can directly reverse their rotation to achieve reverse airflow, with a reverse airflow rate of ≥60%, exceeding the requirement stipulated in Article 122 of the "Coal Mine Safety Regulations" (which states that after the direction of airflow is reversed, the supply air volume of the main ventilation fan should not be less than 40% of the normal supply air volume). As a result, there is no need to construct a dedicated reverse-air duct, thereby reducing installation costs. Simply put, when installing the fan, all you need to do is lay two rails on a solid foundation, place the fan on top of them, and connect one end of the fan to the mine’s ventilation outlet. Since the fan features a direct-drive rotor connected to the motor, maintenance is straightforward—generally, you only need to lubricate the motor at regular intervals according to the specified schedule and quantity.
The roller-type installation of the fan allows its components to be pulled apart along the fan’s axial direction, making subsequent equipment maintenance exceptionally simple.
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No. 1600, Tangli West Road, Yuncheng Economic and Technological Development Zone, Yuncheng City, Shanxi Province
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