Multi-stage grinding device for powder processing

The utility model discloses a multistage grinding device for powder processing, which belongs to the technical field of grinding equipment and comprises a casing, a feed hopper is embedded at the top of the casing, a first motor is mounted on one side wall of the casing, a driving gear is fixedly connected onto an output shaft of the first motor, and two transmission shafts are rotatably connected into the casing through first bearings. Grinding and crushing rollers are fixedly connected to the outer walls of the two transmission shafts, transmission gears meshed with each other are fixedly connected to the ends, extending out of the machine shell, of the two transmission shafts, and any one of the two transmission gears is meshed with the driving gear; the raw materials are firstly subjected to preliminary grinding and crushing work, the crushed raw materials fall into the blanking piece, and the raw materials are gradually ground by utilizing the grinding cavity channel formed between the grinding body and