Multifunctional heat treatment quenching water tank

The utility model discloses a multifunctional heat treatment quenching water tank, which belongs to the technical field of quenching and comprises a quenching tank, the left side surface of the quenching tank is fixedly communicated with a water inlet pipe, the inner bottom wall of the quenching tank is fixedly connected with an annular aeration pipe, and the upper surface of the annular aeration pipe is fixedly communicated with aeration nozzles which are annularly arranged. The back surface of the quenching tank is fixedly connected with an aeration pump, the output end of the aeration pump is fixedly communicated with a ventilation pipe, and through the arrangement of the aeration pump, the ventilation pipe, the annular aeration pipe and aeration nozzles, a quenching medium in the quenching tank can be aerated, so that the medium is more uniformly in contact with a quenching workpiece, and the quenching workpiece is uniformly quenched conveniently; and through the arrangement of an exhaust fan, a purificat