Nonreciprocal device based on magneto-optical resonator cavity

Sanitary cover for drinking can

The utility model discloses a sanitary cover for a beverage can, comprising a cover top and a cover edge. The cover edge is a double-layer cover edge with an internal layer cover edge and an external layer cover edge, a convex rid is arranged in the external cover edge, one side of the internal cover edge inclines inwards, a clamping opening tightly clamping an upper edge of an easy open can is formed between the internal and the external cover edges. The utility model is especially matched with the beverage storage easy open cans, the easy open can be sealed after opened, a user can carry and enjoy the beverage in the can slowly according to needs with sanitation and convenience, and throwing, spilling and wasting can be avoided.