High pressure liquid rotary coupling with slip seal

Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – Reaction-type nozzle motive means

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277387, 277407, B05B 306

Patent

active

060592028

ABSTRACT:
A high pressure liquid sealing connection between two relatively rotatable liquid passage members of a rotary nozzle or a swivel. The connection is formed by two abutting relatively rotatable annular coaxial sealing members forming a high pressure liquid passage between the relatively rotatable members. Both sealing members are carried and kept coaxial by a seal holder carried by one of the relatively rotatable passage members. Both sealing members are forced axially relative to the seal holder by high pressure liquid flow at the sealing connection to maintain a dynamic sealing relationship between the sealing members and to force one of the sealing members into sealing contact with and rotation with the other of the relatively rotatable passage members. As the other sealing member substantially wears away by relative rotation of the sealing members it is forced axially relative to the seal holder and toward the one sealing member to maintain the sealing integrity of the sealing connection.

REFERENCES:
patent: 3904211 (1975-09-01), Dega
patent: 5820130 (1998-10-01), Zakharov
patent: 5909848 (1999-06-01), Zink

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