Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1977-11-14
1979-11-20
Schwadron, Martin P.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
251170, 251328, F16K 320
Patent
active
041747283
ABSTRACT:
This invention is a novel valve of the slidable-gate type. The valve is designed especially for long-term use with highly abrasive slurries. The sealing surfaces of the gate are shielded by the valve seats when the valve is fully open or closed, and the gate-to-seat clearance is swept with an inflowing purge gas while the gate is in transit.
A preferred form of the valve includes an annular valve body containing an annular seat assembly defining a flow channel. The seat assembly comprises a first seat ring which is slidably and sealably mounted in the body, and a second seat ring which is tightly fitted in the body. These rings cooperatively define an annular gap which, together with passages in the valve body, forms a guideway extending normal to the channel. A plate-type gate is mounted for reciprocation in the guideway between positions where a portion of the plate closes the channel and where a circular aperture in the gate is in register with the channel.
The valve casing includes opposed chambers which extend outwardly from the body along the axis of the guideway to accommodate the end portions of the gate. The chambers are sealed from atmosphere; when the gate is in transit, purge gas is admitted to the chambers and flows inwardly through the gate-to-seat-ring, clearance, minimizing buildup of process solids therein. A shaft reciprocated by an external actuator extends into one of the sealed chambers through a shaft seal and is coupled to an end of the gate. Means are provided for adjusting the clearance between the first seat ring and the gate while the valve is in service.
REFERENCES:
patent: 423755 (1890-03-01), Giles
patent: 2664338 (1953-12-01), Cornell
patent: 3038693 (1962-06-01), Dumm
patent: 3171429 (1965-03-01), Sturmer et al.
patent: 3204924 (1965-09-01), Bredtschneider
patent: 3214131 (1965-10-01), Boldt et al.
patent: 3570510 (1971-03-01), Tsutsumi
patent: 3834664 (1974-09-01), Atkinson
patent: 3918471 (1975-11-01), Bedner
patent: 4124194 (1978-11-01), Alvarez et al.
Blair Henry O.
Roberts James W.
Usnick George B.
Ward Gene T.
Warner Terry N.
Carlson Dean E.
Gerard Richard
Hamel Stephen D.
Lewis Fred O.
Schwadron Martin P.
LandOfFree
Sliding-gate valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sliding-gate valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sliding-gate valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-869803