The utility model provides a diffuser with an adjustable blade, and relates to the technical field of diffusers, the diffuser comprises a connecting
flange and a working mechanism, the upper end of the connecting
flange is fixedly connected with the working mechanism, and a supporting
assembly provides a firm supporting point through a supporting connecting column and a supporting block, so that the stability of the whole structure is guaranteed; the service life of equipment is prolonged, the connecting
assembly is accurately connected with other assemblies, the assembling process is simplified, the reliability of the overall structure is improved, the side blade
assembly allows side blades to rotate around a first rotating shaft, different
airflow conditions are adapted,
airflow guiding is optimized, and the efficiency is improved; the top blade assembly is provided with a movable block and a movable spring; necessary elastic support is provided, the blades are allowed to adapt to
airflow changes, the damage risk is reduced, the adjusting assembly enables the angles of the blades to adapt to different working conditions through a fine adjusting mechanism, the acceleration and
diffusion effects of airflow are optimized, and therefore the overall performance is improved.