Vertical grinding machine

The utility model discloses a vertical grinding machine. Cylinder block, a base is arranged at the upper part of the cylinder body; a motor is mounted at the upper end of the base; the lower end of the motor is connected with a grinding shaft through a coupling; the grinding shaft penetrates through the whole cylinder body; a first grinding disc is fixedly mounted at the upper end of the grindingshaft; a second grinding disc is arranged at the lower end of the first grinding disc and fixed to the cylinder body, a third grinding disc is arranged on the lower portion of the second grinding discand fixed to a grinding shaft, a plurality of discharging holes are formed in the third grinding disc, and a fourth grinding disc is arranged on the lower portion of the third grinding disc. According to the vertical grinding machine, the multi-stage grinding mechanism is adopted, materials can be ground step by step, meanwhile, residues in the materials can be effectively filtered out through the multi-layer filter scree