| 摘要 |
<p>The invention provides a valve apparatus of a gas cylinder. The valve apparatus comprises a holder body including a deformation preventing groove which is formed to have a predetermined depth inside, at least one ring mounting groove which is formed on an outer periphery of the upper side and on which an upper O-ring is mounted, a ring mounting protrusion which is formed on an upper periphery of the lower side and on which a lower O-ring is mounted, and an extended sleeve which is formed to be extended to the lower side of the ring mounting protrusion in a predetermined length; a upper cap including a cover ring which is connected to the outer periphery of the holder body to cover the upper part of the deformation preventing groove, and a cover protrusion which is formed to protrude to the upper side of the cover ring and which is inserted and connected to the upper part of the deformation preventing groove; a valve holder in which an inner O-ring is mounted to the upper side and the lower side, and which includes a valve holder body, a guide hole which is formed in a center of the valve holder body to be penetrated and allows a valve pin to be passed through, a port which communicates to the guide hole and is formed in the side surface of the valve holder body to be penetrated to allow gas to flow, and a communicating groove which is formed to be indented in a predetermined length from the outer periphery of the valve holder body; a lower cap which includes a lower cap body, an upper flange which is formed in an upper end of the lower cap body by bending inwards and in which a central hole is formed in a center to be penetrated, a flow hole which is formed in the lower side of the central hole to be penetrated to have a larger diameter than the central hole, a lower flange which is formed in a lower end of the lower cap body by bending outwards, and a supporting piece which has an inserting groove in which the extended sleeve is inserted and connected to the inner side by bending from the end of the lower flange to the upper side; and a valve pin which is connected to a lower end of an open pin, is penetrated to the center of the holder body, and controls the access of the gas by the pressurization of the open pin.</p> |
