The utility model discloses a cylindrical or rectangular air filter element. A cylindrical or rectangular filter in the filter body comprises a non-woven filter layer composed of at least two layers of non-woven fabrics and non-woven filter layer sandwiched on both sides or one side of the conformal supporting net, non-woven filter layer and conformal supporting net are folded together into shape strip projection indentation shape preserving filtering layer on both sides of the supporting nonwoven fabrics in the vertical line direction at a distance with the direction of the left non-woven filter layer. The air filter element of the utility model can be washed repeatedly, and can be used for a long time; the utility model has the advantages of fast and convenient cleaning and quick drying; the utility model has the advantages of economy, durability and long service life.
【技术实现步骤摘要】
【技术保护点】
１．一种圆筒形空气滤清器滤芯，包括筒底和带出气孔的上端盖、圆筒形内、外支撑网、设置在内外支撑网之间的滤芯本体，其特征在于：滤芯本体包括至少两层无纺布组成的无纺布过滤层和夹在无纺布过滤层两面或一面的保形支撑网，无纺布过滤层和保形支撑网一同沿圆筒形内支撑网顺圆周方向折叠成首尾相接的环形管筒，无纺布过滤层两面的保形支撑网沿母线方向每隔一定距离设有离开无纺布过滤层方向的条形突起压痕。
【技术特征摘要】
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