JPS57195969A - Sealing device - Google Patents

Sealing device

Info

Publication number
JPS57195969A
JPS57195969A JP56079235A JP7923581A JPS57195969A JP S57195969 A JPS57195969 A JP S57195969A JP 56079235 A JP56079235 A JP 56079235A JP 7923581 A JP7923581 A JP 7923581A JP S57195969 A JPS57195969 A JP S57195969A
Authority
JP
Japan
Prior art keywords
annular grooves
pressure side
eccentricity
circumferential direction
sealing member
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
JP56079235A
Other languages
Japanese (ja)
Inventor
Hiromi Kaneko
Toshiyoshi Iino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi 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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56079235A priority Critical patent/JPS57195969A/en
Publication of JPS57195969A publication Critical patent/JPS57195969A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To make it possible to reduce the eccentricity of a shaft and to stabilize rotation by providing annular grooves in the circumferential direction only on the low pessure side of one or both of the inner and outer peripheral surfaces of an annular sealing member. CONSTITUTION:Annular grooves 7 are provided on the low pressure side on the inner peripheral surface of an annular sealing member in the circumferential direction. The distribution of pressure differences in such a structure is given by a dotted line 8D that decreases linearly in the same way as a solid line 8 A on the high pressure side while the pressure difference does not severely change on the low pressure side due to the effect of the annular grooves. Consequently, it is possible to increase restoring force and to reduce the eccentricity of the shaft.
JP56079235A 1981-05-27 1981-05-27 Sealing device Pending JPS57195969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56079235A JPS57195969A (en) 1981-05-27 1981-05-27 Sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079235A JPS57195969A (en) 1981-05-27 1981-05-27 Sealing device

Publications (1)

Publication Number Publication Date
JPS57195969A true JPS57195969A (en) 1982-12-01

Family

ID=13684200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56079235A Pending JPS57195969A (en) 1981-05-27 1981-05-27 Sealing device

Country Status (1)

Country Link
JP (1) JPS57195969A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0377068U (en) * 1989-11-30 1991-08-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0377068U (en) * 1989-11-30 1991-08-01

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