Locking mechanism for opening and closing shaft rod of magnetic static sealing needle type stop valve

The invention discloses a locking mechanism for an opening and closing shaft lever of a magnetic static sealing needle type stop valve in the technical field of valves, which comprises a valve main body with a valve core shaft lever inside, a magnetic transmission assembly and an opening and closing valve rod, and the magnetic transmission assembly is fixed on the upper end surface of the valve main body through a bolt in a static sealing manner; the opening and closing valve rod is vertically and movably installed at the top of the magnetic transmission assembly, and a locking mechanism used for locking rotation of the opening and closing valve rod is arranged on one side of the magnetic transmission assembly. The push-and-pull rocker arm can be pulled upwards to drive the locking pressing rod to slide in the inner cavity of the guide sleeve, so that the end of the locking pressing rod can abut against the side wall of the opening and closing valve rod, locking of the opening and closing valve rod is achieve