Patent ID: 7108147

Claim:
A vacuum pump valve of a container having a receiving cavity subject to an interior pressure and an opening communicating with said receiving cavity, wherein said vacuum pump valve comprises: a valve body comprising a sealing platform sealedly attached on said container at said opening thereof, and a guiding sleeve upwardly extended from said sealing platform to form a suction channel, wherein said sealing platform has an operation hole formed thereon at a position within said suction channel and at least a through ventilating groove communicating said receiving cavity of said container with an exterior thereof, so as to allow suction of air from said receiving cavity through pressure differential between said interior pressure and an atmosphere pressure; a suction element, which is disposed within said suction channel of said valve body, comprising an enlarged sealing head adapted to seal on said sealing platform to enclose said ventilating groove thereof and a guiding shaft which is extended from said sealing head and is slidably mount at said sealing platform at said operation hole to move said sealing head between a releasing position and a sealing position, wherein at said releasing position, said guiding shaft is upwardly slid along said operation hole to upwardly pull said sealing head apart from said sealing platform so as to allow air in said receiving cavity to be withdrawn through said ventilating groove, and at said sealing position, where said atmosphere pressure is greater than said interior pressure, said guiding shaft is forced to downwardly slide along said operation hole to seal said sealing head on said sealing platform at said ventilating groove so as to retain said container in a vacuum manner, wherein said guiding shaft of said suction element has a diameter smaller than a diameter of said operation hole define a ventilating clearance between a surrounding wall of said guiding shaft and said operation hole, wherein said ventilating clearance is embodied as said ventilating groove to communicate said receiving cavity with said exterior thereof for allowing air to pass therethrough, and a retention lock which comprises a tubular air passage regulator slidably disposed within said suction channel between a locked position and an unlocked position, wherein at said locked position, said air passage regulator is sealed at said guiding sleeve at a position that a bottom wall of said air passage regulator pushes said sealing head downwardly to seal on said sealing platform so as to ensure said suction element sealing on said valve body, and at said unlocked position, said air passage regulator is slidably lifted up to allow said sealing head to be pulled apart from said sealing platform for discharging said air in said receiving cavity.