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DE3568833D1 - Seal device for interposition between a pump body and pump impeller - Google Patents

Seal device for interposition between a pump body and pump impeller

Info

Publication number
DE3568833D1
DE3568833D1 DE8585107012T DE3568833T DE3568833D1 DE 3568833 D1 DE3568833 D1 DE 3568833D1 DE 8585107012 T DE8585107012 T DE 8585107012T DE 3568833 T DE3568833 T DE 3568833T DE 3568833 D1 DE3568833 D1 DE 3568833D1
Authority
DE
Germany
Prior art keywords
impeller
pump
pump body
seal device
interposition
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
DE8585107012T
Other languages
German (de)
Inventor
Primo Lovisetto
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.)
Lowara SRL
Original Assignee
Lowara SRL
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11251672&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3568833(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lowara SRL filed Critical Lowara SRL
Application granted granted Critical
Publication of DE3568833D1 publication Critical patent/DE3568833D1/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
    • F04D29/16—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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

The present invention concerns a seal device (1) interposed between an impeller (5) and a pump body (4). That device is composed of a seal ring (15), encircling the forward portion (9) of the impeller (5), which is accommodated in a seat (14) fonned on the pump body (4). The seat (14) has such dimensions as to allow radial movement of the ring (15) on its interior. Furthermore, there is provided a means (11) of allowing a pressure force to act on the sealing element (15) at least at a portion thereof facing the forward portion (9) of the impeller (5).
DE8585107012T 1984-06-07 1985-06-05 Seal device for interposition between a pump body and pump impeller Expired DE3568833D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT41591/84A IT1180991B (en) 1984-06-07 1984-06-07 SEALING DEVICE INTERPOSED BETWEEN IMPELLER AND PUMP BODY

Publications (1)

Publication Number Publication Date
DE3568833D1 true DE3568833D1 (en) 1989-04-20

Family

ID=11251672

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585107012T Expired DE3568833D1 (en) 1984-06-07 1985-06-05 Seal device for interposition between a pump body and pump impeller

Country Status (4)

Country Link
EP (1) EP0167837B2 (en)
AT (1) ATE41483T1 (en)
DE (1) DE3568833D1 (en)
IT (1) IT1180991B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT209616Z2 (en) * 1986-08-08 1988-10-24 Lowara Spa HYDRAULIC SEAL RING ON THE MOUTH OF THE IMPELLER IN SINGLE AND MULTI-STAGE PUMPS.
US5295786A (en) * 1990-12-27 1994-03-22 Ebara Corporation Liner ring for a pump
DE4302492A1 (en) * 1993-01-29 1994-08-04 Klein Schanzlin & Becker Ag Split ring seal
SE502552C2 (en) * 1994-03-16 1995-11-13 Flygt Ab Itt sealing device
US5577886A (en) * 1995-02-15 1996-11-26 Itt Flygt Ab Sealing device for pump impeller
AU5411898A (en) * 1997-09-30 1999-04-23 Ebara Corporation Centrifugal pump and sealing mechanism thereof
US6439843B1 (en) * 2000-11-16 2002-08-27 Ametek, Inc. Motor/fan assembly having a radial diffuser bypass
JP4532142B2 (en) * 2003-12-22 2010-08-25 株式会社荏原製作所 Fluid machinery sealing mechanism or centrifugal pump
CN102619778B (en) * 2012-04-24 2014-07-30 浙江格凌实业有限公司 Sealing ring tensioning mechanism for vortex air pump
FR3058758B1 (en) * 2016-11-14 2020-07-17 Safran Aircraft Engines TURBOMACHINE, SUCH AS FOR example A TURBOJET OR AN AIRPLANE TURBOPROPELLER
LU500237B1 (en) * 2021-06-02 2022-12-02 Wilo Se Centrifugal pump with improved suction neck seal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369508A (en) * 1920-01-03 1921-02-22 Edwin M R Weiner Centrifugal pump
US1783427A (en) * 1924-08-11 1930-12-02 Irving C Jennings Sealing device for centrifugal pumps
US2162486A (en) * 1937-06-21 1939-06-13 Letourneau Inc Sealing means for centrifugal pump impellers
GB748827A (en) * 1953-04-24 1956-05-09 Masch Ebau Ag Balcke Improvements relating to seals between the rotary and stationary parts of rotary machines
US3578874A (en) * 1968-09-26 1971-05-18 Dominion Eng Works Ltd Removable runner seal
US3741679A (en) * 1971-09-17 1973-06-26 Blue Co John Centrifugal pump
US3779667A (en) * 1972-02-24 1973-12-18 Baker Hydro Inc Semi-seal device

Also Published As

Publication number Publication date
IT1180991B (en) 1987-09-23
IT8441591A0 (en) 1984-06-07
IT8441591A1 (en) 1985-12-07
EP0167837B2 (en) 1996-06-05
ATE41483T1 (en) 1989-04-15
EP0167837A1 (en) 1986-01-15
EP0167837B1 (en) 1989-03-15

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings