摘要
考察了工业型弛张筛的状况，从双质体非线性振动系统的角度分析了它的幅频特性，绘制了计算机辅助的国产CZS系列3个规格弛张筛的幅频特性曲面，得到了频率比z0=0．85～0．91，转速n=600r／min，阻力比b=0．05，相对振幅λ=7～12mm的结果．提出了采用近亚共振动力状态，即低频大振幅工作条件的建议，完善了弛张筛在环保和节能应用中的理论和技术支持．
The amplitude-frequency response of the flip-flow screen was analyzed by combining computer aided three-dimensional plot, called A3D method, for a double-mass nonlinear vibration system. The optimum operation conditions of flip-flow screen were found to be frequency ratio zo = 0. 85 - 0. 91, rotational speed n = 600 r/min, damp ratio b =0. 05, relative amplitude λ=7 - 12 mm. The results agreed very well with from the reality as well as our previous study. A proposal of using low frequency but high amplitude technology for flip-flow screen was put forward. This is essential for the fine coal wet-sieving in energy saving and environmental protection field.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2007年第7期753-756,共4页
Journal of China Coal Society
关键词
幅频特性
弛张筛
细煤筛分
amplitude-frequency characteristic
flip-flow screen
fine coal wet-sieving
