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US 2002/0171243 A1Published application
Sealing system for media-carrying parts
OwnerHarry Jostinventor
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OwnerHarry Jostinventor
Estimating the term…
The invention relates to a sealing system for media-carrying parts, especially for use in asepsis, comprising a sealing ring (14), preferably a toroidal sealing ring, which is placed on a sealing seat for the purpose of sealing the parts. Said sealing seat is constituted by a sealing channel (22) that substantially surrounds the sealing ring. The sealing channel (22) is composed of sealing surfaces (21a, 21b) of both parts (12, 13) and defines between said parts and between said sealing surfaces a sealing groove (30) into which the sealing ring (14) is deformed when the parts are axially braced against each other until they come into contact. A separating joint (41) adjoins the sealing channel on a side facing away from the sealing groove (30). The sealing channel (22) has at least one expansion chamber (35, 57a, 57b) that deviates from the undeformed cross-section of the sealing ring. Said expansion chamber (35, 57a, 57b) is arranged substantially opposite the sealing groove (30). The sealing ring (14) is deformed into the expansion chamber (35, 57a, 57b) by outer influences, especially by the bracing force for joining the parts.
Detachable sealing system for media-carrying parts, particularly for aseptic applications, with a sealing ring (14), preferably a toroidal sealing ring, fixable to the sealing seat of the parts for the purpose of sealing the same, the sealing seat being formed by a sealing channel (22) substantially surrounding the sealing ring (14) and which is formed from the sealing surfaces (21a, 21b) of both parts and between the parts and between the sealing surfaces (21a, 21b) is formed a sealing gap (30) directed towards the media area (20) into which the sealing ring (14) is deformed if the parts are axially braced in stop manner against one another, whilst on a side remote from the sealing gap (30) a separating gap (41) is connected to the sealing channel (22), characterized in that the sealing channel (22) has at least one expansion chamber (35, 57a, 57b) diverging from the undeformed cross-sectional shape of the sealing ring (14) into which the latter is deformed under the bracing force for connecting the parts.
Sealing system according to one of the preceding claims, characterized in that at least one main expansion chamber (57a, 57b) is formed by a cross-sectional shape of the sealing channel (22) receiving it diverging from the basic cross-sectional shape of the sealing ring (14) and in particular by a profile, indented compared with a semicircular shape, of the channel halves forming the sealing channel (22).
Sealing system according to one of the preceding claims, characterized in that a secondary expansion chamber (35) is provided at the transition between the sealing channel (22) and the separating gap (41) and forms a cross-sectionally bead-shaped depression with rounded edges projecting over the annular channel (22).
Sealing system according to one of the preceding claims, characterized in that the sealing gap (41) is axially connected to the secondary expansion chamber (35) and is preferably so narrow, particularly no wider than {fraction (1/100)} to {fraction (1/10)}, particularly {fraction (1/80)} to {fraction (1/50)} of the cross-sectional dimension of the sealing ring (14), that the deformation of the sealing ring (14) ends before it.
Sealing system according to one of the preceding claims, characterized in that the sealing channel (22) and its expansion chamber (35, 57a, 57b) are so dimensioned as a function of the dimensions of the sealing ring (14) that the surface of the part of the sealing ring (14) deforming into the sealing gap (30) is substantially aligned with the media-carrying walls of the parts.
Sealing system according to one of the preceding claims, characterized in that the sealing ring (14) is made from hard metal, particularly ferrotitanate and the parts are deformable under the bracing force.
Sealing system according to one of the preceding claims, characterized in that for the connection of the media-carrying parts a screw coupling (11) is provided and has in particular a coating preventing corrosion during the screwing action (11) and which is preferably a titanium-nitride coating.
Sealing system according to one of the preceding claims, characterized in that the sealing system is a joint connection between two media-carrying parts, particularly between two pipes.
Sealing system according to one of the preceding claims, characterized in that the parts are made from a hard material, particularly metal, such as stainless steel or plastic.
Dependencies are inferred from the claim text.