Pretreatment device for supercritical extraction

The utility model provides a pretreatment device for supercritical extraction. The pretreatment device comprises a treatment assembly, a feeding cover, a mounting plate, a driving motor, a magnetic attraction assembly, a discharging door, an electric control cabinet and a button switch, according to the raw material processing device, due to the arrangement of the processing assembly and the driving motor, raw materials enter the processing box through the feeding cover, meanwhile, the driving motor is controlled to be powered on and run through the button switch, the driving motor drives the first grinding roller to rotate, and the first grinding roller drives the driven gear and the second grinding roller to rotate through the driving gear; raw materials are ground through the first grinding roller and the second grinding roller, so that the granularity of the raw materials meets the use requirement of supercritical extraction, the structure is simple, the maintenance cost is low, and the operation cost of