Mason jar sealing device

A mason jar sealing device, comprising a main machine and an adapter component, wherein a separation plate is provided in the main machine, the separation plate has an accommodating cavity on one side and a sleeve on the other side, a vacuum pump is provided in the accommodating cavity, a through hole is provided in the separation plate, and the through hole is connected to an extraction tube of the vacuum pump, wherein the separation plate is provided with a peripheral bone and an inner peripheral bone arranged concentrically on the side of the sleeve, and the through hole is located within a range surrounded by the inner peripheral bone;

• the adapter component comprises a straight cylindrical bracket whose both ends are pluggably fixed in the sleeve, a first opening and a second opening are respectively provided at the two ends of the bracket, an annular separator plate is provided in the bracket, and the first opening and the second opening are respectively located on two sides of the annular separator plate and can both be mounted at a mouth of a mason jar;
• and
• a first sealing structure is provided on the first opening, and a second sealing structure is provided on the second opening;
• when the first opening is inserted into the sleeve, the first sealing structure surrounds the peripheral bone, and the second sealing structure is in close contact with an external thread of the mouth of the mason jar;
• and when the second opening is inserted into the sleeve, the second sealing structure surrounds the inner peripheral bone, and the first sealing structure is in close contact with the external thread of the mouth of the mason jar.