Patent ID: 7726505
Filing Date: 2010-06-01
Classification: F16K,Y10T

Abstract:
1. 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 having a suction channel and comprising a sealing platform sealedly attached on said container at said opening thereof, wherein said sealing platform has at least a through ventilating groove formed thereon within said suction channel for 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, wherein said valve body further comprises a guiding sleeve upwardly extended from said sealing platform to form said suction channel for communicating with said receiving cavity of said container through said ventilating groove; a suction element, which is disposed within said valve body, comprising an enlarged sealing head movably sealing on said sealing platform to enclose said ventilating groove thereof, wherein said sealing head is moved between a releasing position and a sealing position, wherein at said releasing position, said sealing head is upwardly and slidably moved apart from said sealing platform for allow air in said receiving cavity to be withdrawn through said ventilating groove, and at said sealing position, said sealing head is downwardly and slidably moved to seal said ventilating groove on said sealing platform in condition that said atmosphere pressure is greater than said interior pressure, so as to retain said container in a vacuum manner, wherein said sealing platform has a plurality of ventilating holes spacedly formed thereon as said ventilating groove in such a manner that said enlarged sealing head of said suction element is sealed at said ventilating grooves on said sealing platform to normally block said air to enter into said receiving cavity through said ventilating grooves, and an operation hole formed thereon at a position within said suction channel, wherein said suction element further comprises a guiding shaft which is downwardly extended from said sealing head and is slidably mounted at said operation hole within said valve body to guide said sealing head to move between said releasing position and said sealing position, wherein said suction element further comprises a blocking latch integrally protruded from a lower end of said guiding shaft to lock up said guiding shaft at said operation hole in a slidably movable manner so as to block a further upward movement of said sealing head when said sealing head is upwardly moved at said releasing position, wherein said ventilating holes are formed on said sealing platform at a position eccentrically adjacent to said operation hole; and a retention lock detachably mounted at said guiding sleeve to enclose said suction channel between a locked position and an unlocked position, wherein at said locked position, said retention lock is sealed at said guiding sleeve at a position that a bottom biasing wall of said retention lock 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 retention lock 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.