Drainage facility

The utility model belongs to the technical field of the mechanized storage and transportation, in particular to a drainage facility used for the blast furnace water slag bin, comprising a drainage cover, a sealing rubber, a drainage channel, etc. The drainage cover is provided on rollers; the sealing rubber is provided on the outer edge of the drainage cover; an electrodynamic push rod makes the rollers of the drainage cover to and fro move on the track; the sewerage flowing from the drainage cover flows into the drainage channel. The utility model is simple in structure, and easy in maintenance; not only the frozen danger of the materials in winter is solved, but also the occupation for vehicles and traffic passages is reduced; the utilization efficiency of the system facility is improved, and the traffic environment is protected; simultaneously, because the filter device is omitted, the equipment cost and the maintenance cost can be saved.