Quick sealing connector for lower spray head and spray pipe of fire-fighting spray

The invention relates to the technical field of spraying connectors, and discloses a quick sealing connector for a fire-fighting spraying lower nozzle and a spraying pipe, the quick sealing connector comprises a threaded connector, an outer connector is rotatably connected to the outer wall of the threaded connector, the top of the outer connector is flush with the top of the threaded connector, and a top splicing cylinder is fixedly connected to the top of the outer connector; an inner fixing cylinder is fixedly connected to the inner wall of the threaded connector, and a rubber sealing gasket located on the inner side of the top splicing cylinder is detachably connected to the top of the inner fixing cylinder. The device is divided into an upper part and a lower part, the two threaded connectors distributed up and down can be connected with a spraying head and a spraying pipe correspondingly, the two fastening assemblies of the upper part can enter the top splicing cylinder of the lower part from the two re