Polypropylene melt-blowing device and method

The invention discloses a polypropylene melt-blowing device and method. The polypropylene melt-blowing device comprises a material distribution box and a feeding box arranged above the material distribution box, the discharging end of the lower end of the feeding box is in communication with the feeding end of the upper end of the material distribution box, a feeding port used for feeding is formed in the upper end of the feeding box, and a material mixing mechanism used for mixing materials is arranged in the feeding box; the material mixing mechanism comprises a material mixing barrel arranged in the feeding box, the upper end of the material mixing barrel is closed, the lower end of the material mixing barrel is open, and the opening in the lower end of the material mixing barrel makescontact with the inner bottom of the feeding box in an abutting mode; the vertical projection of the material mixing barrel covers a discharging port of the feeding box; and the axis of the material mixing barrel deviates fro