Liquid storage tank

The utility model discloses a liquid storage box which is suitable for cleaning equipment and comprises a box body and an upper cover covering the box body, the box body and the upper cover are matched to form a cavity used for containing dirty liquid, the upper cover comprises an upper cover supporting piece, at least part of the upper cover supporting piece is located in the cavity, and the upper cover supporting piece is located in the cavity. A first blocking rib is arranged on the inner wall of the cavity, a first shielding piece is arranged on the inner wall of the cavity, and at least one second shielding piece is arranged on the side, facing the first blocking rib, of the upper cover supporting piece. The liquid in the cavity body and stirred up due to shaking is blocked as much as possible, the possibility that the stirred-up liquid enters the motor through the upper cover of the liquid storage tank is reduced, and therefore the effect of protecting the motor in the cleaning equipment is achieved. 本实