Fire extinguisher head structure

The utility model belongs to the technical field of fire extinguishers, and discloses a fire extinguisher head structure which comprises a valve main body, a valve rod assembly, a lifting handle and a pressing handle, the bottom of the valve main body is detachably connected with a suction pipe seat, the suction pipe seat is provided with a circulation channel, and the circulation channel is communicated with a valve cavity of the valve main body. A connecting interface is formed in the bottom of the suction pipe seat by the circulating channel and is used for connecting an output pipe in the fire extinguisher cylinder; an annular installation flange is arranged on the lower portion of the outer wall of the valve body, the upper portion of the installation flange is rotatably sleeved with a gland, the gland is provided with a connecting end extending downwards, internal threads are arranged on the inner side wall of the connecting end, and an installation space is formed among the connecting end, the outer wa