Automatic slag pouring device for slag leaking opening in bottom of steel rolling heating furnace

The utility model relates to a steel rolling heating furnace bottom slag leakage opening automatic deslagging device which comprises a turning cover and an automatic device, the turning cover is arranged on a slag leakage opening pipeline, one side of the turning cover is hinged to the pipeline, the automatic device comprises a spring, a connecting rod and a balance weight lever, the connecting rod is horizontally arranged at the bottom of the turning cover, and the balance weight lever is hinged to the turning cover. One end of the spring is arranged on the outer wall of the pipeline, the other end of the spring is connected with the connecting rod, the balance weight rod is arranged at the end, connected with the spring, of the connecting rod, the balance weight rod comprises a limiting nut and a plurality of balance weight blocks, the weights of the balance weight blocks are different, the balance weight rod is a threaded rod, and the limiting nut is connected with the limiting nut. Aiming at the defects i