热一次风机是正压直吹式中速磨煤机制粉系统中极为重要的配套设备,其结构的可靠性和使用的经济性直接影响中速磨的安全运行和制粉电耗。由于热一次风机在高温(300℃)和高压(10000Pa以上)的工况下工作,而且在功率消耗上所占的制粉电耗高于中速磨,因此对热一次风机的设计效率、耐高温性能、材料强度、密封结构及调节特性 The hot primary blower is an extremely important ancillary equipment in the positive pressure direct blow type medium speed pulverizing system. The reliability of its structure and the economy of its use directly affect the safe operation of the medium speed mill and the power consumption of milling. Because the hot primary fan work under high temperature (300 ℃) and high pressure (10000Pa above), and the power consumption of the milling power consumption is higher than the medium-speed mill, so the thermal efficiency of a fan design, resistance High temperature performance, material strength, sealing structure and conditioning characteristics