Cap closing structure for sealed container

A cap closing structure for a sealed container, comprising:

• an upper cover comprising a top plate and a circumferential bracket extended from the top plate, the top plate having a through hole formed thereon, the circumferential bracket having a retaining slanted surface formed thereon;
• a lower cover arranged underneath the upper cover, the lower cover comprising a base plate and a sealing ring connected to the base plate, the base plate having a latch member extended to penetrate into the through hole, the latch member having a guiding structure formed thereon, the sealing ring having one end formed at another side of the retaining slanted surface;
• an elastic element mounted onto an outer perimeter of the latch member and elastically clamped between the top plate and the bottom plate;
• and
• a handle member comprising a dial lever and an arm extended from the dial lever, the arm connected to a shaft, the shaft configured to operably move inside the guiding structure, thereby allowing the sealing ring to be tightly sealed between the retaining slanted surface and the container,
• wherein the latch member is non-detachable with the base plate,
• wherein the guiding structure comprises a first channel, a second channel, and a curved channel fluidly interconnecting the first channel and the second channel, and
• wherein the first channel, the second channel, and the curved channel extend into the latch member.