Totally-closed water-cooling frequency conversion cabinet of cold continuous rolling unit

The utility model relates to the technical field of frequency conversion cabinets, in particular to a totally-closed water-cooling frequency conversion cabinet of a cold continuous rolling unit. Comprising a closed frequency conversion cabinet and a water transfer tank, a water storage tank, a first water pump, a water inlet pipe, a cooling pipeline, a filter layer and a backflow pipe are installed on the back face of the closed frequency conversion cabinet, a two-position three-way electromagnetic valve is installed below the backflow pipe, a straight-through pipe is connected below the two-position three-way electromagnetic valve, and the water transfer tank is installed below the two-position three-way electromagnetic valve; a second water pump, a filter box and a filter element are installed in the water transfer box, and the lower portion of the filter box communicates with the water storage tank through a pipeline. The two-position three-way electromagnetic valve controls the valve to switch, backflow w