Closed visual sewage collection device

The utility model discloses a closed visible pollution discharge collection device which mainly comprises a pollution discharge root valve, an oil stop valve, a water stop valve, a waste oil pollutiondischarge joint, a waste water pollution discharge joint, a buried polluted oil pipe and a buried sewage pipe, each of the waste oil pollution discharge joint and the waste water pollution dischargejoint mainly comprises a vertical pipe, a sight glass arranged at the upper port of the vertical pipe, a side interface arranged on the side wall of the upper end of the vertical pipe and a sealing piece; the lower ends of the waste oil pollution discharge joint and the waste water pollution discharge joint are buried under the ground, and the sight glass and the side interface are positioned on the ground. According to the utility model, the installation height of a pipeline can be reduced, and closed discharge of sewage and dirty oil is realized; after the water point of the construction site is changed, only the pol