In order to fit the requirements of coal mine ventilation network of resistance and to ensure fan efficiency, the machine uses a fan to spin structure, ie, the same type of fan butt together two FBD proof fans, two opposite impeller rotation direction, omit the guide vanes and reduce the loss of the vanes, and improve efficiency. Since the structure is simple FBD-2.2KW Bureau Ventilator, in addition to regular refueling motor bearings, but generally do not need maintenance, long-term continuous operation. FBCD rotating blower fan, provided by Zibo Zibo Blower Fan Factory Limited. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) strong, credible, Shandong Zibo fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zibo Blower and you hand into the brilliant, for a better future!