Simple garbage rack capable of automatically sealing garbage bag opening

The utility model discloses a simple garbage rack capable of automatically sealing an opening of a garbage bag. The bag opening device comprises a base plate, an inner n-shaped frame, an outer n-shaped frame, a self-sealing assembly and a bag opening assembly, the inner n-shaped frame is hinged to the base plate, the outer n-shaped frame is hinged to the base plate, the self-sealing assembly is fixed to the base plate, and the bag opening assembly is arranged on the inner n-shaped frame and the outer n-shaped frame. The bag opening device has the advantages of being simple in structure, easy to produce, low in cost and convenient to use, and when the bag opening device is used, the outer n-shaped frame and the inner n-shaped frame are unfolded, the self-sealing assembly and the bag openingassembly are installed, and then the bag opening device is sleeved with a plastic bag. The garbage can is suitable for garbage bags of various specifications, waste plastic bags can be recycled, whengarbage is thrown, the ba