Which purifier are you using? Take the Xiaomi air purifier as an example. The steps are as follows:

Rotate the top fan grille counterclockwise and remove it ( Please remove the operating instructions sticker first);

Hold the fan blade with one hand, and unscrew the fan blade screw cap clockwise with the other hand to remove the fan;

Just clean it .

Note: To ensure dynamic balance, it is not recommended to remove the labels on the blades.