Supercharging device and supercharging system

According to the supercharging device and the supercharging system, a connecting pipe is used for conveying powder passing through the supercharging device, and pressure gas is conveyed to an annular gas storage bin through a gas inlet and is blown into the connecting pipe through a plurality of supercharging through grooves which are formed in the lower portion of the connecting pipe and penetrate through the pipe wall of the connecting pipe; and the outlet direction of the pressurizing through groove is inclined relative to the axis of the connecting pipe and is consistent with the conveying direction of the powder. By arranging the supercharging device in the pneumatic conveying pipeline, on one hand, powder is suspended and kept in a fluidized state relative to the lower parts of the connecting pipe and the pneumatic conveying pipeline, so that the conveying efficiency of the pneumatic conveying pipeline is favorably kept, and on the other hand, attenuated conveying pressure in the pneumatic conveying pip