Accessory device (pneumatic automatic air door) of mine main fan
一种扇风机、风门的技术,应用在矿井主扇风机附属装置(风动自动风门)领域,能够解决易发生故障、安全性差、浪费电能等问题,达到杜绝漏风、运行安全可靠、技术先进科学的效果
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[0009] 1. Fan rotation
[0010] (Fig. 1) Shown that type A fan is running, at this moment, the air damper of type A fan is opened automatically under the effect of wind pressure, and the pneumatic damper of type B fan is automatically closed under the effect of wind pressure. If it is necessary to switch from blower A to blower B, just cut off the power supply of blower A and start blower B immediately, so that the air damper of blower B acts on the entire damper due to the full pressure, and the damper opens quickly, and blower A The wind-operated damper of the typhoon will automatically close under the action of the wind pressure when the speed of the fan slows down and the wind pressure decreases to a certain value. This completes the rotation of the fan.
[0011] 2. Against the wind
[0012] Assuming that fan A is running, after receiving the notice of reverse wind, the driver of the main fan inserts the two bolts into the door opening hole of fan A and the door closing ...
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