DE3477953D1 - Dual seal system for roots blower - Google Patents

Dual seal system for roots blower

Info

Publication number
DE3477953D1
DE3477953D1 DE8484111115T DE3477953T DE3477953D1 DE 3477953 D1 DE3477953 D1 DE 3477953D1 DE 8484111115 T DE8484111115 T DE 8484111115T DE 3477953 T DE3477953 T DE 3477953T DE 3477953 D1 DE3477953 D1 DE 3477953D1
Authority
DE
Germany
Prior art keywords
seal system
roots blower
dual seal
dual
roots
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.)
Expired
Application number
DE8484111115T
Other languages
German (de)
English (en)
Inventor
Edmund Pollock Thomas
John Henry Muir
Bruce Charles Hargus
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.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
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 Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Application granted granted Critical
Publication of DE3477953D1 publication Critical patent/DE3477953D1/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Mechanical Sealing (AREA)
  • Sealing Of Bearings (AREA)
DE8484111115T 1983-09-20 1984-09-18 Dual seal system for roots blower Expired DE3477953D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/534,044 US4787831A (en) 1983-09-20 1983-09-20 Dual seal system for roots blower

Publications (1)

Publication Number Publication Date
DE3477953D1 true DE3477953D1 (en) 1989-06-01

Family

ID=24128492

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484111115T Expired DE3477953D1 (en) 1983-09-20 1984-09-18 Dual seal system for roots blower

Country Status (7)

Country Link
US (1) US4787831A (enExample)
EP (1) EP0136617B1 (enExample)
JP (1) JPS60150495A (enExample)
KR (1) KR910002731B1 (enExample)
CA (1) CA1239911A (enExample)
DE (1) DE3477953D1 (enExample)
IN (1) IN160796B (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709106A1 (de) * 1987-03-20 1988-09-29 Aisin Seiki Kaeltekompressor-brennkraftmaschinenaggregat der rotationskolbenbauweise
JPH01167485A (ja) * 1987-12-22 1989-07-03 Shinko Seiki Kk 磁気シールを有するルーツ型ポンプ
US4997191A (en) * 1989-10-17 1991-03-05 Gits Bros. Mfg. Co. Adjustable shaft seal and method of adjustment
US5795360A (en) * 1996-02-26 1998-08-18 Mactavish Machine Manufacturing Co. Apparatus for the separation of tobacco lamina from an air stream
JPH10274171A (ja) 1997-01-31 1998-10-13 United Dominion Ind Inc 定位置洗浄ギヤポンプ
BE1013829A3 (nl) * 2000-11-09 2002-09-03 Atlas Copco Airpower Nv Werkwijze voor het afdichten van een as van een rotor van in een compressorelement en daarbij gebruikte afdichting.
JP2008255796A (ja) * 2007-03-30 2008-10-23 Anest Iwata Corp オイルフリーロータリ圧縮機の軸封装置
US20100253005A1 (en) * 2009-04-03 2010-10-07 Liarakos Nicholas P Seal for oil-free rotary displacement compressor
EP3064775B1 (de) * 2015-03-02 2022-01-26 Pfeiffer Vacuum GmbH Vakuumpumpe sowie Verfahren zur Detektion eines Kontaktes zwischen wenigstens einem Rotor und einem Stator einer Vakuumpumpe

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742306A (en) * 1953-02-02 1956-04-17 Vickers Inc Seal assembly
US2948555A (en) * 1955-08-08 1960-08-09 Chicago Rawhide Mfg Co Controlled gap seal
US2779532A (en) * 1955-09-30 1957-01-29 Herschmann Otto Root's blowers, in particular for suction purposes
US2971784A (en) * 1955-10-04 1961-02-14 Borg Warner Seal assembly
US3081095A (en) * 1959-06-02 1963-03-12 Thompson Ramo Wooldridge Inc Liquid fluorine seal
CH453015A (de) * 1966-06-17 1968-05-31 Bbc Brown Boveri & Cie Schwimmringdichtung
US3467396A (en) * 1967-05-10 1969-09-16 Durametallic Corp Internally cooled seal assembly
US3697088A (en) * 1970-08-28 1972-10-10 Durametallic Corp Floating bushing
FR2215860A5 (enExample) * 1973-01-29 1974-08-23 Commissariat Energie Atomique
US4013429A (en) * 1975-06-04 1977-03-22 Air Products And Chemicals, Inc. Fractionation of air by adsorption
US4212475A (en) * 1979-01-15 1980-07-15 Crane Packing Co. Self aligning spiral groove face seal
US4199152A (en) * 1979-03-19 1980-04-22 Rockwell International Corporation Hydrostatic seal for centrifugal pumps
DE3007267A1 (de) * 1980-02-27 1981-09-03 Leybold Heraeus Gmbh & Co Kg Wellendichtung fuer waelzkolbenpumpen
DE3216990A1 (de) * 1982-05-06 1983-11-10 Sihi Gmbh & Co Kg, 2210 Itzehoe Waelzkolbenpumpe

Also Published As

Publication number Publication date
KR910002731B1 (ko) 1991-05-03
IN160796B (enExample) 1987-08-08
EP0136617A2 (en) 1985-04-10
JPS60150495A (ja) 1985-08-08
JPS6354150B2 (enExample) 1988-10-26
EP0136617B1 (en) 1989-04-26
EP0136617A3 (en) 1987-03-04
US4787831A (en) 1988-11-29
KR850002876A (ko) 1985-05-20
CA1239911A (en) 1988-08-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee