▎ 摘　　要

NOVELTY - The utility model relates to the technical field of filter core, and claims a precise cell filter core, comprising a filter core main body, the bottom part and the top part of the two sides of the filter core main body are provided with a connecting block, the outer side of the filter core main body top part with a connecting frame, the inner side sequentially the connecting frame is provided with a second filter layer, graphene filter screen, the bottom of the two sides of the connecting frame is provided with a mounting groove, two sides of the mounting groove are provided with a sliding groove. the precise cell filter core, can be convenient to disassemble the connecting frame, the limiting rod slides in the sliding groove, so that the limiting rod moves to one side of the sliding groove, away from the lower part of the connecting block, the connecting block releases the limiting effect, the connecting frame can be taken out from the outer side of the filter core main body, convenient for changing the connecting frame, at the same time, it can reduce the whole filter core is not necessary to change.