Filter core core

The utility model relates to a core of filter core, it contains a wavy separation material and the plane separation material that is used for filtering the dust, and this bipartition interlocks from the material and coils range upon range ofly, and a plurality of access roades and exit channel are established out to the clamp, the access road includes an opening section and a passageway section that is connected, and the opening section extends to the entry end of core, and the sectional area of opening section is greatly at the sectional area of passageway section, the dust so equate and enlarges the access road in the space of opening part, so during the back washing, just having great space and can reach easily and smoothly discharge, the bipartition all includes a macrovoid layer and a fine pore layer that combines together from the material, and the access road is adjacent in the fine pore layer, and when borrowing this normal use, the dust can be attached to on the layer of fine pore, and consequently w