▎ 摘　　要

NOVELTY - The utility model claims a filter, comprising a shell and a composite filter core with upper and lower two ends sealed and fixed in the shell; the side wall of the shell is formed with a water inlet; the bottom of the shell is formed with a water outlet; between the shell and the composite filter core is formed with a water inlet passage; the centre of the composite filter core is formed with a central cavity for flowing out the water supply flow. the composite filter core comprises a multi-layer hollow cylindrical filter layer tightly connected in turn; the outer and inner are ceramic layer; composite adsorption layer; a protective layer and an active carbon layer; the active carbon layer centre forms a cavity; the composite adsorption layer is formed by extruding porous material and adhesive; the material of the protective layer is KDF and ATS adsorption resin; the porous material is zeolite powder, bentonite, kaolin, graphene; one or more of the mixture of alumina. The composite filter core of the utility model has good filtering effect, especially suitable for emergency water supply.