Water quality detection device capable of automatically collecting wastewater

The invention discloses a water quality detection device capable of automatically collecting wastewater, and relates to the technical field of wastewater detection, the water quality detection device comprises a water pipe and a collection box, and further comprises an impeller, the fixed shaft of the impeller is rotatably connected to the inner wall of the water pipe, the lower surface of the impeller is fixedly connected with a rotating shaft, the rotating shaft is provided with an energy supply mechanism, and the inner wall of the collection box is fixedly connected with a supporting block. The upper surface of the supporting block is fixedly connected with a plurality of first springs, the upper ends of the first springs are jointly and fixedly connected with a water storage tank, the bottom of the water pipe fixedly communicates with a water adding pipe, and the upper surface of the collecting box is provided with a second through opening used for the water adding pipe to penetrate through and fixedly co