Sealing cover

A sealing cover adapted to cover an opening of a barrel body, comprising:

• an outer cover body adapted to removably cover the opening of the barrel body, and including two spaced-apart pivot connecting portions;
• an inner cover body disposed below said outer cover body, movable in a top-bottom direction, and including a platform body which upwardly extends into said outer cover body, said platform body having two spaced-apart rail holes;
• an airtight ring sleeved on an outer peripheral surface of said inner cover body;
• and
• an operating member including two mounting parts respectively and pivotally connected to said pivot connecting portions, each of said mounting parts having a sliding post that extends into a respective one of said rail holes of said platform body, said operating member being operable to pivot so that said sliding posts slide respectively in said rail holes to drive movement of said inner cover body relative to said outer cover body between a sealed position and an unsealed position, when at the sealed position, said airtight ring being deformed and airtightly pressed between the barrel body and said outer cover body, when at the unsealed position, said airtight ring restoring to its original shape and configured not to be pressed between the barrel body and said outer cover body.