Metal limiter bolt heat treatment device

The utility model discloses a metal stopper bolt heat treatment device which comprises a heat treatment box, two supports are symmetrically and fixedly connected to the lower end of the heat treatment box, a water storage tank and a water pumping tank are fixedly connected to the side walls of the two supports respectively, cooling liquid is arranged in the water storage tank, and a sliding plug is slidably connected to the inner wall of the water pumping tank in a sealed mode. A cooling groove is formed in the box wall of the heat treatment box, the water pumping box communicates with the cooling groove through a water inlet pipe, a first one-way valve is installed on the inner wall of the water inlet pipe, and the water storage box communicates with the cooling groove through a water outlet pipe and communicates with the water pumping box through a water supply pipe. The first motor is driven to rotate, the sliding plug is driven to slide on the inner wall of the water pumping tank, cooling liquid in the wa