Vacuum valve type airtight container

Abstract

An airtight container with a vacuum valve in a double structure is disclosed, which is able to enhance an engaging force of a lid by sealing an interior of a container in a vacuum state, and is able to store a food for a long time period without rotting by making an interior of a container vacuum by discharging the air from the interior of the container to the outside with the assistance of a vacuum pump, and a connection part of a vacuum pump is made in a compact size for thereby obtaining an easier storing and preventing a damage.

1 . In an airtight container which includes a container body, and a container lid which is air-tightly engaged at the container body with a packing being disposed between them, a vacuum valve type airtight container, comprising:
 a first valve engaging hole which is provided at the container lid;   a first valve which includes a cylindrical part inserted into the first valve engaging hole and being movable in an up and down direction, a valve circular plate for disconnection a communication between the interior of the container and the outside when it is closely contacted with a surface of the container lid which operates as a valve seat at an upper side of the cylindrical part, and a flange plate which passes through the first valve engaging hole at the lower side of the cylindrical part for thereby preventing an escape of the same;   a second valve engaging hole which is formed at a center portion of the first valve while passing through the same in an up and down direction and has a diameter contraction part provided with a step surface forming a valve seat at an intermediate portion;   a second valve which includes a valve head disposed at the step surface for thereby disconnecting the second valve engaging hole, a valve shaft rod which is extended to a lower side of the valve head and passes through the diameter contraction part, and an escape prevention head provided at a lower side of the valve shaft rod with a certain distance from the lower surface of the diameter contraction part, so that the second calve can move in the second valve engaging hole in an up and down direction;   a first air flow slit groove which is formed at an outer surface of the cylindrical part of the first valve in an up and down direction for communicating the inner and outer sides of the container for allowing air to flow when the cylindrical part moves up; and   at least one second air flow slit groove which is formed at the diameter contraction part so that the air flows up and down along an axial direction when the second valve moves up.   
   
   
       2 . The container of  claim 1 , wherein a handle is protruded from one side of the valve circular plate of the first valve. 
   
   
       3 . The container of  claim 2 , wherein said handle is slanted upward like it gets loose, while not contacting with a surface of the container lid. 
   
   
       4 . The container of one among  claims 1  through  3 , wherein said first and second valves are made of silicon rubbers.