Quenching water tank for production line

The utility model relates to a quenching water tank for a production line, which comprises a water tank, the water tank is provided with a baffle unit at two ends of a section bar for blocking two ends of the water tank, the baffle unit comprises an upper part and a lower part which are spliced with each other, and the middle part of the lower edge of the upper part is provided with a half passing opening convenient for the section bar to pass through; the upper portion of the upper edge of the lower portion is provided with the other half passing opening facilitating passing of the sectional material, the two passing openings are spliced to form a complete sectional material passing opening, an upper felt and a lower felt are clamped on the upper portions and the lower portions of the passing openings respectively, and the upper felt and the lower felt are covered with an upper detachable plate and a lower detachable plate respectively. The upper dismounting plate can be turned over upwards, and the lower di