US 12,084,256 B1
Sealing device
Jingjie Xu, Shenzhen (CN)
Assigned to SHEN ZHEN YOUSHENG ELECTRICAL APPLIANCE CO., LTD., Shenzhen (CN)
Filed by Shen Zhen Yousheng Electrical Appliance Co., Ltd., Shenzhen (CN)
Filed on Feb. 29, 2024, as Appl. No. 18/590,984.
Claims priority of application No. 202323659451.X (CN), filed on Dec. 29, 2023.
Int. Cl. B65D 81/20 (2006.01)
CPC B65D 81/2038 (2013.01) 18 Claims
OG exemplary drawing
 
1. A sealing device configured for sealing a first sealing cover on a first mouth of a first container, the sealing device comprising a main machine, the main machine comprising:
a housing comprising a first sleeve joint part, wherein the first sleeve joint part defines a first accommodating space adapted to the first mouth;
a vacuum pump mounted to the housing and comprising an air extraction port;
an air extraction channel defined in the housing and communicating the air extraction port with the first accommodating space;
an air inlet channel defined in the housing and communicating the first accommodating space with ambient air; and
a control valve mounted to the housing and used for controlling open and close of the air inlet channel;
wherein the sealing device further comprises an air duct, and one end of the air duct is selectively connected to the housing and is respectively communicated with the air inlet channel and the air extraction channel; and
wherein the sealing device further comprises a conversion structure for sealing a second sealing cover on a second mouth of a second container, and an outer diameter of the second mouth is not equal to that of the first mouth; the conversion structure is selectively connected to the housing; the air duct is selectively connected to the housing through the conversion structure.