Grading device for silicon carbide production

The utility model relates to the technical field of silicon carbide, in particular to a grading device for silicon carbide production, which comprises a case and a top frame fixedly mounted at the top of the case, and further comprises a feeding mechanism and three dumping mechanisms, the feeding mechanism is fixedly mounted on one side of the top of the top frame, and the three dumping mechanisms are fixedly mounted at the bottom of the top frame. Through the arrangement of the dumping mechanism, the scraping mechanism and the buffer discharging mechanism, when silicon carbide powder enters the first-layer grading box through the mixing barrel, the grading box is divided into three layers, the density of the screen is reduced at a time, and when the powder passes through the first-layer grading box, matched particles fall into the collecting groove below through the screen, so that the grading effect is improved. And then hydraulic rods are opened to enable the hydraulic rod on one side of the grading box to