QFL941W 电动冷风放风阀是由电动执行器、电动操作器和阀体组成，电动操作器控制电动执行器的交流伺服电机驱动推杆上下移动，使放风阀的阀杆产生位移，改变风量的大小。位移大小即可在电动操作器上显示，烧窑工人可按实际需要直接调节控制电动操作器，即可达到所需要的风量。
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