Air purification self-cleaning device

The utility model provides an air purification self-cleaning device, which belongs to the technical field of purifiers and comprises a filtering part, a scraping brush component, a clutch unit, a dust collecting box, a driving motor and an impeller. The driving motor drives the impeller to rotate and can also drive the scraping brush assembly to rotate through the motor extension shaft at the same time. According to the air purification self-cleaning device, frequent manual cleaning of a user is not needed, and the user experience in the scene with large dust, pet flocks and flying catkins is improved. Through self-cleaning, the air quantity in each scene application is almost unchanged, the air purification effect in an actual scene is greatly improved, and real long-term efficient purification is provided for a user. In addition, by creatively sharing the mode that the scraping brush assembly and the impeller share the driving motor and combining the corresponding control method, a special cleaning motor an