| 摘要 |
The present invention relates to a valve device capable of maintaining a vacuum within a vacuum container and facilitating a vacuum release by improving the structure of an existing valve device. The valve device is used for a vacuum container composed of a main body and a lid attached and detached to/from the main body and is composed of a valve joint formed on the lid, a valve, and round recesses on the contact surface of the valve in a circumference direction. The recesses, of which the centers are eccentric to the central axis of the valve, maintain a vacuum in the vacuum container for a long time by forming an independent vacuum separated from the vacuum in the vacuum container and touching the contact surface of the valve with the bottom of a valve seating recess. The valve contact surface is easily separated from the valve seating recess when pushing the head of the valve from left to right using the eccentricity of the recesses. |
