Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1984-11-15
1986-04-22
Walton, G. L.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
251 58, 251172, 251174, 251175, 251229, 251298, 277164, B08B 304, B08B 900, F16K 2502
Patent
active
045835683
ABSTRACT:
A valve assembly for powdery granules comprises a valve housing having upper and lower walls formed with upper and lower openings, a valve member having a hollow cylindrical valve body rotatably supported within the valve housing, and a drive mechanism for turning the valve member through an angular range of about 90.degree. so as to hold the valve member upright in the vertical direction. The valve housing has, at the peripheral edge of its upper opening, a tapered surface which is enlarged downwards, and a circular groove is formed behind the tapered surface. Arranged in the circular groove is an elastic hollow seal ring, part of which is permitted to protrude into the interior of the valve housing through a circular slit formed in the tapered surface. The valve body have, at the peripheral edges of one end opening and a closure member mounted to the outer periphery of the valve body orthogonally to the axis thereof, a tapered surfaces to be opposed to the tapered surface provided at the upper opening peripheral edge of the valve housing. When the tapered surface of the valve housing opposes the tapered surface of the valve member, air is supplied to the interior of the seal ring to press the seal ring against the tapered surface of the valve member.
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Akiyama Morio
Otani Ikuhei
Yamakawa Takashi
Kurimoto Ltd.
Walton G. L.
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