一、主扇风机的设计矿井通风是由自然风流、主扇风机或辅助扇风机产生的风流进行的.主扇风机是永久性设备,因此,需要精心设计.为了获得最经济的投资和运行费用,合理的规划是十分重要的.煤矿通风布局的分析表明,在不同时期,必须满足一定风量和压力的要求.将风量和压力换算成功率和运行时间,再根据扇风机特性曲线选择在何种情况下最高功率及最长运行时间能产生最大的效率.在多数情况下,可变节距叶片式轴流扇风机就能满足这一要求.如果用简单的通风设备满足不了通风要求,则就要按照下述要求对扇风机的设计进 First, the design of the main fan The mine ventilation is the natural wind, the main fan or auxiliary fans generated by the wind flow of the main fan is a permanent device, therefore, need careful design.In order to obtain the most economical investment and operating costs , Reasonable planning is very important.Analysis of coal mine ventilation layout shows that in different periods, must meet a certain amount of wind and pressure requirements.Will the air volume and pressure converted into power and running time, and then fan fan characteristic curve according to choose In the case of maximum power and maximum operating time can produce maximum efficiency in most cases, variable pitch vane axial fan can meet this requirement.If simple ventilation can not meet the ventilation requirements, it is necessary to Follow the requirements below to fan fan design