JPS58109771A - Non-contact type mechanical seal - Google Patents

Non-contact type mechanical seal

Info

Publication number
JPS58109771A
JPS58109771A JP20719481A JP20719481A JPS58109771A JP S58109771 A JPS58109771 A JP S58109771A JP 20719481 A JP20719481 A JP 20719481A JP 20719481 A JP20719481 A JP 20719481A JP S58109771 A JPS58109771 A JP S58109771A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
surfaces
ring
pressure
contact
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20719481A
Inventor
Ryoichi Okamoto
Original Assignee
Eagle Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/34Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities

Abstract

PURPOSE:To prevent the contact between opposed surfaces of a stationary ring and a rotary ring from occurring even in the condition of a low pressure and prevent the surfaces from being damaged, by a method wherein at least one of opposed surfaces of a stationary ring and a rotary ring is provided with narrow grooves extending from the outer peripheral end to the inner peripheral end. CONSTITUTION:Sliding surfaces 7, 10 of the stationary ring 6 and the rotary ring 9 are provided with the narrow grooves 11, 12 extending from the outer peripheral end to the inner peripheral end, and a sealing fluid is forcibly passed from a high-pressure side A to a low-pressure side B by a pumping action accompanied by a relative rotational displacement of the sliding surfaces 7, 10, whereby the surfaces 7, 10 are lubricated and are prevented from making contact with each other. Accordingly, the effect of the narrow grooves 11, 12 is displayed particularly at the time of low pressures, while at high pressures, the sealing fluid flows from the high-pressure side A to the low-pressure side B between the sliding surfaces 7, 10 to function similarly to a conventional stationary-type non-contact seal, resulting in an effect comparable to that of the conventional seal.
JP20719481A 1981-12-23 1981-12-23 Non-contact type mechanical seal Pending JPS58109771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20719481A JPS58109771A (en) 1981-12-23 1981-12-23 Non-contact type mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20719481A JPS58109771A (en) 1981-12-23 1981-12-23 Non-contact type mechanical seal

Publications (1)

Publication Number Publication Date
JPS58109771A true true JPS58109771A (en) 1983-06-30

Family

ID=16535796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20719481A Pending JPS58109771A (en) 1981-12-23 1981-12-23 Non-contact type mechanical seal

Country Status (1)

Country Link
JP (1) JPS58109771A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239492A1 (en) * 1986-03-26 1987-09-30 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Flat rotary face sealing and method of manufacturing it
US5224714A (en) * 1990-07-18 1993-07-06 Ebara Corporation Noncontacting face seal
US5300723A (en) * 1990-12-28 1994-04-05 Yamaha Corporation Electronic musical instrument

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933614A (en) * 1972-07-24 1974-03-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933614A (en) * 1972-07-24 1974-03-28

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239492A1 (en) * 1986-03-26 1987-09-30 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Flat rotary face sealing and method of manufacturing it
FR2596312A1 (en) * 1986-03-26 1987-10-02 Snecma Seal rotating plate and its machining method
US4722533A (en) * 1986-03-26 1988-02-02 Societe Nationale D'etude Et De Constructions De Moteur D'aviation "S.N.E.C.M.A." Rotary, flat metallic fluid-tight and thrust-resisting seal and the method of manufacture thereof
US5224714A (en) * 1990-07-18 1993-07-06 Ebara Corporation Noncontacting face seal
US5300723A (en) * 1990-12-28 1994-04-05 Yamaha Corporation Electronic musical instrument

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