Gas valve assembly protection mechanism of gangue selecting machine

The utility model discloses an air valve assembly protection mechanism of a gangue sorting machine, which relates to the technical field of gangue sorting and comprises a protection shell, a plurality of uniformly distributed through holes are arranged at the top end of the protection shell, a maintenance door capable of being opened and closed is arranged on one wide side of the protection shell, springs are fixedly connected to four corners of the top end of the protection shell, and the springs are fixedly connected to the top end of the protection shell. A cross rod is fixedly connected between the top ends of the two springs on one side of the protection shell in the length direction, and the cross rod does not cover the through hole. The air valve assembly is installed in the protective shell and can be well protected, the two cross rods are arranged at the top of the protective shell and connected with the protective shell through the springs, when coal gangue falls to the air valve assembly, the coal