Large-volume multi-layer inner cavity adjusting integrated water tank

The utility model discloses a large-volume multi-layer inner cavity adjusting integrated water tank which comprises an integrated tank body with a built-in cavity and a water outlet piece fixed on the integrated tank body and used for discharging water, a first partition plate is arranged in the integrated tank body in a sliding mode, and two positioning blocks are transversely arranged in the first partition plate in a sliding mode. Two first springs connected with the two positioning blocks are fixed in the first partition plate, moving plates used for driving the positioning blocks to move are fixed to the positioning blocks, a positioning plate is transversely arranged in the cavity in a sliding mode, a conical block is longitudinally arranged in the positioning plate in a sliding mode, and an L-shaped rod is arranged in the positioning plate in a sliding mode. According to the utility model, the space size of the cavity is adjusted through the positioning plate arranged in the cavity, and the L-shaped ro