Center tube subassembly of filter core

The utility model discloses a center tube subassembly of filter core, include: first half tub, first half tub has first runner, and one end half tub first has first water inlet, and lateral wall half tub first has the apopore, filtration membrane, filtration membrane bend and form first rete and second rete, establish between first rete and second rete for first half tub, intaking to separate and netting, it is continuous with first half tub at a distance from the net to intake, intakes to separate to net and establishes between first rete and second rete, the second is half tub, and half tub second is established outside the bending of filtration membrane, and the second has the second runner for half tub, and the lateral wall that the second is half tub has the inlet opening, and the one end that the second is half tub has first delivery port, it separates the net to produce water, upper end cover, upper end cover cover establish first half tub with the upper end of half tub second, bottom end cover, bottom end cover cover establish first half tub with the lower extreme of half tub second.