SHAFT SEAL DEVICE

PROBLEM TO BE SOLVED: To provide a more simple configuration of shaft seal device than that of the prior art by enabling an annular space 4 formed between a shaft 1 having a gas supply passage 5 where seal gas flows and a case 2 arranged at a diametral outward side of the shaft 1 to be sealingly clo...

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Bibliographic Details
Main Authors FUKUMOTO TAKAHITO, OKUMACHI EIJI
Format Patent
LanguageEnglish
Published 12.05.2014
Subjects
BLASTING
CYLINDERS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LAUNDERING
LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILEARTICLES
LIGHTING
MECHANICAL ENGINEERING
PISTONS
SEALINGS
TEXTILES
THERMAL INSULATION IN GENERAL
TREATMENT OF TEXTILES OR THE LIKE
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a more simple configuration of shaft seal device than that of the prior art by enabling an annular space 4 formed between a shaft 1 having a gas supply passage 5 where seal gas flows and a case 2 arranged at a diametral outward side of the shaft 1 to be sealingly closed by seal gas.SOLUTION: A shaft seal device comprises: a rotary seal ring 11 fixed to a case 2; a sleeve 15 having a feeding hole 16 formed to pass it to guide seal gas flowed through a gas supply passage 5 toward the outer peripheral surface side; a stationary seal ring 21 having a seal surface 22 oppositely facing against a seal surface 12 of the rotary seal ring 11; and a resilient member 30 for pushing against the stationary seal ring 21. A seal space 27 into which seal gas is supplied from the feeding hole 16 is formed between the sleeve 15 and the stationary seal ring 21. A gas passage 24 for flowing the seal gas from the seal space 27 into a space between the seal surfaces 12 and 22 is formed in the stationary seal ring 21.
Bibliography:Application Number: JP20120232650