Cover plate for centrifugal machine

The utility model provides a cover plate for a centrifugal machine, and relates to the technical field of centrifugal machines, the cover plate is provided with a cover plate body used for covering an opening of the centrifugal machine and further provided with a turnover mechanism driving the cover plate body to turn over, the turnover mechanism is provided with a turnover shaft and a turnover plate hinged to the turnover shaft, and the cover plate body is fixedly arranged on the turnover plate; a buffer mechanism is further arranged and pushes the cover plate body away from an opening of the centrifugal machine. The buffer mechanism is provided with a torsion spring, the torsion spring is provided with a spiral part and torsion arms, the torsion arms are provided with a first torsion arm and a second torsion arm, and the first torsion arm and the second torsion arm are arranged at the two ends of the spiral part respectively; the spiral part is arranged outside the overturning shaft in a sleeving mode, the