Fan speed regulation 风机调速
Fan regulation, which box on the bed material to maintain the upper-vacuum, maintain good dry environment and prevent dust leakage.
调节引风机，使上箱体中床层物料上部保持微负压，维持良好的干燥环境并防止粉尘外泄（略）。
The experimental results indicate that the flexible guide vane regulation is a comparative ideal regulating method for mine local fan.
实验结果表明，柔性导叶调节是矿井局扇凤机中一种比较理想的调节方法。
Axial flow fan is the main ventilation device presently. This paper introduces the application of axial flow fan, settles saving energy problem and air regulation problem.
目前轴流式通风机在煤矿是普遍的主通风设备，文章阐述了变频器在轴流式风机中的应用，以解决主扇调整风量和节能降耗的问题。
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