机织过滤介质的流体透过性研究

引言机织过滤介质，又称机织滤布，是固液分离领域应用最为广泛的一种过滤介质．滤布的透过度和透水速率的高低直接反映这类过滤介质过滤指标的好坏，因此，研究机织过滤介质透过度和透水速率的变化规律及影响因素对实际过滤作业中合理选择机织滤布具有指导意义．1理论分析机织过滤介质内的孔隙可以分为3类：织物内纱线间孔隙、纱线内纤维间孔隙和纤维上的孔隙．研究表明［1]，对流体透过过滤介质起作用的孔隙主要是织物内纱线间孔隙和纱线内纤维间孔隙，因此，假设机织过滤介质总的透水速率是流体通过过滤介质内两类孔隙时的透水速率之和，…

STUDY ON FLUID-FLOW PERMEATION OF WOVEN FILTER MEDIA

Mathematical equations on distribution of permeability and flow resistance of woven filter medium were deduced,and the permeability and resistance to fluid-flow of four woven filter media were calculated.The results show that the pores in a yam of plain weave filter media and among uarns of twill weave ones are very important for fluid-flow through these two kinds of filter media and the resistance to fluid-flow of woven filter media is below the smaller resistance these two kinds of pores in filter media.