Pulverized coal preparation assembly and boiler

The utility model relates to the field of boilers, and discloses a pulverized coal preparation assembly and a boiler. The pulverized coal manufacturing assembly comprises a coal mill, a primary air pipe connected to an inlet of the coal mill, a separator connected to an outlet in the upper end of the coal mill, a plurality of main pipelines connected to the upper end of the separator and arranged at intervals in the circumferential direction, and reverse air pipelines connected to the separator and arranged between the adjacent main pipelines. The separator comprises a main shell capable of rotating around the central axis in the vertical direction and a plurality of blades arranged on the inner wall of the main shell at intervals in the circumferential direction. The air volume of each reverse air pipeline can be adjusted so as to adjust the pulverized coal concentration of pulverized coal airflow of the main pipeline located on the downstream of the reverse air pipeline in the rotating direction of the main