Waste liquid collecting device for liquid mildew preventive

The utility model discloses a liquid mildew preventive waste liquid collecting device which comprises a collecting box, a stirring shaft is rotatably connected in the collecting box, stirring blades are arranged on the outer side of the stirring shaft, a sleeve is rotatably connected to the outer side of the stirring shaft, a rotating connector is arranged on the top of the stirring shaft, and air suction hoods are arranged on the top of the inner wall of the collecting box at equal intervals. A funnel is arranged in the collecting box, an electromagnetic valve is arranged at the bottom of the funnel, a filter screen is arranged in the collecting box, a sealing plate is arranged at one end of the filter screen, first sliding rods are symmetrically connected to the interior of the sealing plate in a sliding mode, and clamping blocks are fixedly connected to the outer sides of the first sliding rods. A rotary joint, a spray head and a water tank are arranged, so that the inner wall of the collecting box is conv