Water-through cooling heat energy recovery system for bar production

The utility model discloses a through-water cooling heat energy recovery system for bar production. The through-water cooling heat energy recovery system comprises a through-water cooling water tank and a steam collecting tank, comprising a box cover, pipelines and a negative pressure fan for generating negative pressure, the box cover is arranged to be an arc-shaped cover, the box cover covers a water-through cooling water tank, the arc-shaped box cover comprises two arc tops, namely a first arc top and a second arc top, the second arc top is arranged at the top of the first arc top, and the second arc top is arranged at the top of the second arc top. The width of the second arc-shaped top is one third of that of the first arc-shaped top; a steam collecting pipe is arranged in the center of the top of the second arc-shaped top and connected to a steam collecting box. A negative pressure fan is arranged in the steam collecting pipe at the top of the first arc-shaped top; the problem that high-temperature stea