Self-cleaning kneading reactor

The invention discloses a self-cleaning kneading reactor which comprises a barrel (7) and two stirring rotors (5) arranged in an inner cavity of the barrel (7) in parallel in pairs, impellers (6) which are sequentially arranged in a staggered mode and are spirally distributed are arranged on the stirring rotors (5), and the adjacent impellers (6) on the two stirring rotors (5) are arranged in a staggered mode; and E-shaped scrapers on the adjacent impellers (6) on the two stirring rotors (5) can be meshed with each other, and the meshed E-shaped scrapers can clean high-viscosity fluid adhering to the E-shaped scrapers, the rotor walls of the stirring rotors (5) and the inner wall of the barrel (7). The E-shaped scrapers are mutually meshed and scraped in the rotating process, a dynamic contour line generated in the rotating process of the double rotors ensures that no dead angle exists in the equipment, the whole reaction area of an inner cavity of the barrel can be scraped and swept, no dead area exists, the shearing distribution is more uniform, the mixing efficiency is higher, the reaction energy consumption is lower, and the reactor is suitable for large industrial devices.