GB1222598A - Centrifugal pump having hydraulic seal means - Google Patents

Centrifugal pump having hydraulic seal means

Info

Publication number
GB1222598A
GB1222598A GB60188/68A GB6018868A GB1222598A GB 1222598 A GB1222598 A GB 1222598A GB 60188/68 A GB60188/68 A GB 60188/68A GB 6018868 A GB6018868 A GB 6018868A GB 1222598 A GB1222598 A GB 1222598A
Authority
GB
United Kingdom
Prior art keywords
expellers
shaft
pump
plate
expeller
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
GB60188/68A
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.)
Wilfley & Sons Inc A
AR Wilfley and Sons Inc
Original Assignee
Wilfley & Sons Inc A
AR Wilfley and Sons 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 Wilfley & Sons Inc A, AR Wilfley and Sons Inc filed Critical Wilfley & Sons Inc A
Publication of GB1222598A publication Critical patent/GB1222598A/en
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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/14—Shaft sealings operative only when pump is inoperative
    • F04D29/146—Shaft sealings operative only when pump is inoperative especially adapted for liquid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/929—Seal feature where change in operation or condition induces additional leakage control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,222,598. Shaft seals. A. R. WILFLEY & SONS Inc. 18 Dec., 1968 [27 Aug., 1968], No. 60188/68. Heading F2B. In a centrifugal pump in which the impeller shaft 30 is sealed when at rest by valve means 108 and when running by expeller means creating an hydraulic seal and located between the impeller 60 and the valve means, the expeller means comprises a plurality of expellers 64, 120 and 124 rotatable with the shaft and axially spaced from one another. The valve member 108 is carried by a shaft sleeve 80 and urged by springs 110 to seat on a plate 164 when the shaft is at rest. When the pump is running, centrifugally actuated weights act on a back plate 104 to open the valve member, leakage then being prevented by a main expeller 64 and a pair of auxiliary expellers 120 and 124. The expeller 64 is keyed to the pump impeller hub 61 and has radial vanes 70. The expellers 120 and 124 are keyed to the shaft 30 and have radial vanes 130 and 132 respectively. The expellers are spaced by separator plates 160 and 162 which are clamped with the plate 164 between a ring 150 and a portion 44 of a cage 42 secured to a housing 36 having a vent opening 46. A rubber ring 142 axially locates the expellers 120 and 124 between the sleeve 80 and a sleeve 140. Pressurized cleaning fluid from an external source is supplied when required through passages in the portion 44 and a groove 186 and a passage 190 in the plate 164. In a modification, Fig. 7 (not shown), the vanes (130<SP>1</SP>, 132<SP>1</SP>) on the expellers (120<SP>1</SP>, 124<SP>1</SP>) face in axially opposite directions and a passage 208 is provided in the separator plate (162<SP>1</SP>) for supplying pressure fluid from an external source to the space between the expellers (120<SP>1</SP>, 124<SP>1</SP>). In a further modification. Fig. 8 (not shown), the valve member is a rubber &c. diaphragm (320) clamped to a housing member (304) and co-operating with a member (310) secured to the shaft (220) and radially spaced from the housing member (304). The diaphragm (320) is closed by the liquid pressure when the pump is at rest and opened by vacuum created when the pump is running.
GB60188/68A 1968-08-27 1968-12-18 Centrifugal pump having hydraulic seal means Expired GB1222598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75558668A 1968-08-27 1968-08-27

Publications (1)

Publication Number Publication Date
GB1222598A true GB1222598A (en) 1971-02-17

Family

ID=25039771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB60188/68A Expired GB1222598A (en) 1968-08-27 1968-12-18 Centrifugal pump having hydraulic seal means

Country Status (8)

Country Link
US (1) US3515497A (en)
BE (1) BE726371A (en)
CH (1) CH496174A (en)
DE (2) DE1905288A1 (en)
FR (1) FR1597246A (en)
GB (1) GB1222598A (en)
NL (1) NL155922B (en)
SE (1) SE350309B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI822245A0 (en) * 1982-06-22 1982-06-22 Outokumpu Oy AXELTAETNING VID EN CENTRIFUGALPUMP OCH FOERFARANDE FOER AOSTADKOMMANDE AV DENSAMMA
US4639198A (en) * 1984-11-13 1987-01-27 Tecumseh Products Company Suction tube seal for a rotary compressor
US4915579A (en) * 1988-08-15 1990-04-10 A. R. Wilfley & Sons, Inc. Pump sealing apparatus
US5261676A (en) * 1991-12-04 1993-11-16 Environamics Corporation Sealing arrangement with pressure responsive diaphragm means
US5494299A (en) * 1994-02-22 1996-02-27 Evironamics Corporation Temperature and pressure resistant rotating seal construction for a pump
US5427500A (en) * 1994-03-15 1995-06-27 The Weir Group Plc Slurry pump seal system
US5499901A (en) * 1994-03-17 1996-03-19 Environamics Corporation Bearing frame clearance seal construction for a pump
US5591020A (en) * 1994-05-19 1997-01-07 Environamics Corporation Pump oil mister
US5513964A (en) * 1994-10-11 1996-05-07 Environamics Corporation Pump oil mister with reduced windage
US5553867A (en) * 1995-04-21 1996-09-10 Environamics Corporation Triple cartridge seal having one inboard and two concentric seals for chemical processing pump
US5823539A (en) * 1995-04-21 1998-10-20 Environamics Corporation Environmentally safe pump having a bellows seal and a split ring shaft seal
US5667356A (en) * 1996-05-06 1997-09-16 A. R. Wilfley & Sons, Inc. Acid/slurry governor seal assembly for centrifugal pumps
US6224322B1 (en) 1998-11-16 2001-05-01 A. R. Wilfley & Sons, Inc. Seal assembly for centrifugal pumps with barrier ring
DE10153293A1 (en) * 2001-10-31 2003-05-15 List Ag Arisdorf Device for treating a substance
GB0908201D0 (en) * 2009-05-13 2009-06-24 Crane John Uk Ltd Seal assemblies
DE102014224283A1 (en) * 2014-11-27 2016-06-02 Robert Bosch Gmbh Compressor with a sealing channel
CN106939896B (en) * 2017-05-04 2024-06-18 温州市康而达实业有限公司 High-tightness digital metering non-return centrifugal pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE652168C (en) * 1935-04-26 1937-10-26 Wilhelm Beck Dipl Ing Centrifugal pump for high inlet pressure
DE719353C (en) * 1940-03-31 1942-04-04 Wilhelm Beck Dipl Ing Shaft gap seal for glandless centrifugal pumps
GB587372A (en) * 1944-11-01 1947-04-23 Joenkoepings Mek Werkstads Akt Improvements in liquid seals for centrifugal pumps
US2581504A (en) * 1949-12-16 1952-01-08 Wilfley & Sons Inc A Centrifugal pump
US2660487A (en) * 1951-05-31 1953-11-24 A R Wilfiey And Sons Inc Centrifugal pump bearing seal

Also Published As

Publication number Publication date
NL6900966A (en) 1970-03-03
NL155922B (en) 1978-02-15
US3515497A (en) 1970-06-02
DE6904086U (en) 1970-12-17
FR1597246A (en) 1970-06-22
CH496174A (en) 1970-09-15
BE726371A (en) 1969-06-30
SE350309B (en) 1972-10-23
DE1905288A1 (en) 1970-05-27

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