EP1296062A1 - Pompe centrifugale - Google Patents

Pompe centrifugale Download PDF

Info

Publication number
EP1296062A1
EP1296062A1 EP02020615A EP02020615A EP1296062A1 EP 1296062 A1 EP1296062 A1 EP 1296062A1 EP 02020615 A EP02020615 A EP 02020615A EP 02020615 A EP02020615 A EP 02020615A EP 1296062 A1 EP1296062 A1 EP 1296062A1
Authority
EP
European Patent Office
Prior art keywords
pump
thread
impeller
threaded ring
centrifugal pump
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.)
Granted
Application number
EP02020615A
Other languages
German (de)
English (en)
Other versions
EP1296062B1 (fr
Inventor
Steffen Madsen
Peter Lindberg
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.)
Grundfos AS
Original Assignee
Grundfos AS
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 Grundfos AS filed Critical Grundfos AS
Publication of EP1296062A1 publication Critical patent/EP1296062A1/fr
Application granted granted Critical
Publication of EP1296062B1 publication Critical patent/EP1296062B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/622—Adjusting the clearances between rotary and stationary parts

Definitions

  • the invention relates to a centrifugal pump according to the preamble of Claim 1.
  • the built-in Adjustment device with which the sealing gap width between the pump impeller and the front wall portion of the pump housing after a certain operating time of the centrifugal pump for wear reasons again must be adjusted to the efficiency of the centrifugal pump again raise, consists of a spacer.
  • This spacer sits on the pump shaft and is on the one hand at the axial stop and on the other on the rear wall of the pump impeller. In this way, d. H. with the help of the thickness of the spacer, is the axial position of the pump impeller on the pump shaft and thus the aforementioned sealing gap width established.
  • the object of the invention is to improve a centrifugal pump the introductory type in that the sealing gap between the front of the pump impeller and the front of this opposite wall portion of the pump housing to simple and fast way after signs of wear on the front wheel and / or in Saugmundwand Scheme the pump housing back to the original value is adjustable.
  • the said sealing gap width can be fast and simply be adjusted to their original width. It only needs the pressure piece, which in the usual way with the help of the force of a screw, which is screwed axially into the end of the pump shaft, against the front the hub of the pump impeller is pressed by loosening the Screw to be removed. Thereafter, instead of the above Spacer used threaded ring twisted, causing the pump impeller forward, d. H. towards the central intake area of the pump, adjusted. This has the consequence that the sealing gap between the Blades or the front cover of the pump impeller and the These blades or this cover disc inside opposite Wall area of the pump housing again reduced.
  • the proposed solution is particularly suitable for sewage pumps, namely for those who have a central and freely accessible intake exhibit.
  • the inventive Solution then particularly advantageous if in the central intake a cutter is provided, which serves to larger solids in the pumped medium.
  • a cutting unit has beside a standing, annular cutting plate a central rotating blade part on, which instead of the aforementioned pressure piece on the pump shaft is attached and also takes over the function of the pressure piece.
  • a cutting unit is subject to the pump impeller due the solids in the fluid to increased wear, so that the mentioned sealing gap width increases faster. It is therefore necessary to Re-set the sealing gap in shorter time intervals. Doing this the time saved in the new adjustment of the sealing gap width due to inventive solution particularly advantageous noticeable.
  • the centrifugal pump according to the invention is Thread of the threaded ring as external thread and the thread in the formed front hub portion of the pump impeller as internal thread. This results in a simple design of the threaded ring. Furthermore is advantageous that the two threads are provided as a fine thread, whereby a very accurate adjustment of the sealing gap width between impeller and pump housing is possible.
  • the threaded ring by means of a pressure hull in its axial position secured, wherein the pressure body the threaded ring against the axial Stop the pump shaft pushes and even with the end of the pump shaft is screwed.
  • the pressure body can further as a cutting means a provided in the intake of the centrifugal pump cutting unit be educated.
  • the sole drawing shows a single-stage, generally designated 1 Centrifugal pump whose housing 2 by means of a clamping ring 3 at a partial shown drive motor 4 is attached to the centrifugal pump.
  • a pump shaft 5 At a pump shaft 5 is a pump impeller 6 rotatably, but axially displaceable arranged.
  • the pump impeller has a central hub 7 and a rear cover plate 8 with the usual blades 9.
  • the centrifugal pump 1 is a centrally aspirating pump, which is why the pump housing 2 is provided with a central intake area 10.
  • the pump housing is the second provided with a plurality of support legs 11, with which the centrifugal pump a support surface (not shown) is supported.
  • the pump impeller 6 has in the shown Case no front cover plate, so that its blades 9 the front wall portion 2a of the pump housing 2 directly opposite. There is a between the blades 9 and the housing portion 2a Sealing gap 12, whose width is set so that caused by this gap Loss of efficiency of the centrifugal pump 1 is as low as possible.
  • the pump shaft 5 is provided with an axial stop 13 which is shown in FIG Case formed by a stepped end portion 14 of the pump shaft is.
  • On this section 14 loosely sits a threaded ring 15, thus on the section 14 is freely rotatable and freely movable.
  • the threaded ring 15 has in the case shown, an external thread 16, which in an internal thread 17 engages in a front Rezess 18 of the hub 7 of the pump impeller 6 is provided.
  • the two threads 16 and 17 as Fine thread formed so that the pump impeller 6 axially very accurately can be adjusted to turn the width of the sealing gap 12 very accurately to be able to adjust.
  • pressure body can also be designed so that it is against the threaded ring 15 presses, in turn, then against the axial stop 13th the pump shaft is pressed and thus also locked in place. by virtue of the rotationally fixed mounting of the pump impeller 6 on the pump shaft 5, the pump impeller can not be adjusted in this case.
  • the pressure body 20 can also be used as a cutting means of a suction in the 10th the centrifugal pump 1 arranged cutting unit for crushing solids pumped by the centrifugal pump, loaded with solids Be formed delivery medium.
  • the pressure body with provided at least one cutting tooth 22 and serves as a rotating Cutting means.
  • the rotating pressure body works with a stationary, annular cutting plate 23 which on the pump housing. 2 is arranged rotationally fixed and has at least one counter-cutting tooth 24.
  • the axial stop 13 can proceed as well be that the pump shaft with a radially projecting annular collar is provided, whose one axial shoulder as a stop surface for the Threaded ring 15 is used.
  • the threaded ring 15 also be provided with an internal thread, which then in a corresponding external thread of the hub 7 of the pump impeller. 6 intervenes.
  • the threaded ring with an outer, axial running collar provided on the inner ring side with the Internal thread is provided.
  • the hub 7 has for this purpose an axially vorsprin Jersey is.
  • the hub 7 has for this purpose an axially projecting ring part, the provided with the external thread.
  • the pump impeller also have a front cover plate, the inlet edge region with this opposite wall portion of the pump housing forms a sealing gap, which must be readjusted after wear.
  • the threaded ring 15 described above as in question here Adjustment is also applicable to multi-stage centrifugal pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP02020615A 2001-09-20 2002-09-13 Pompe centrifugale Expired - Lifetime EP1296062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20115516U DE20115516U1 (de) 2001-09-20 2001-09-20 Kreiselpumpe
DE20115516U 2001-09-20

Publications (2)

Publication Number Publication Date
EP1296062A1 true EP1296062A1 (fr) 2003-03-26
EP1296062B1 EP1296062B1 (fr) 2011-01-05

Family

ID=7961939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020615A Expired - Lifetime EP1296062B1 (fr) 2001-09-20 2002-09-13 Pompe centrifugale

Country Status (3)

Country Link
US (1) US6746206B2 (fr)
EP (1) EP1296062B1 (fr)
DE (2) DE20115516U1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE531139C2 (sv) * 2007-05-08 2009-01-07 Itt Mfg Enterprises Inc Pumpaggregat och metod
DE102008001814A1 (de) * 2008-05-15 2009-11-19 Würdig, Uwe Vorrichtung zur Laufradabdichtung bei Kreiselpumpen
US7789049B2 (en) * 2008-07-14 2010-09-07 Honda Motor Co., Ltd. Variable capacity water pump via electromagnetic control
DE102011077544A1 (de) * 2011-06-15 2012-12-20 Ksb Aktiengesellschaft Schneidwerkspumpe
CN102322443A (zh) * 2011-09-08 2012-01-18 浙江工业大学 轴向力平衡的单级离心泵
SE539558C2 (sv) * 2013-08-15 2017-10-10 Xylem Ip Man S À R L Pump för pumpning av vätska samt pumphjulssammansättning
DE102014116449B4 (de) 2014-11-11 2023-08-17 Munsch Chemie-Pumpen Gmbh Pumpe mit einem Lagerträger, einer Zwischenlaterne und einer Verstelleinrichtung
PL3312426T3 (pl) * 2016-10-18 2019-12-31 Xylem Europe Gmbh Koło tnące, tarcza tnąca oraz zespół tnący nadające się do pomp rozdrabniających
US20210310371A1 (en) * 2020-04-07 2021-10-07 Garrett Transportation I Inc Motorized compressor device with air bearing having reduced axial and radial stack-up

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513116A1 (de) * 1985-04-12 1986-10-23 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Spaltdichtung an laufraedern von kreiselpumpen
US5306124A (en) 1993-03-24 1994-04-26 Laibe Supply Corporation Slurry pump and seal system
EP0688955A1 (fr) * 1994-06-23 1995-12-27 KSB Aktiengesellschaft Dispositif pour l'équilibrage de la poussée axiale dans les pompes centrifuges
DE19960160A1 (de) * 1999-12-14 2001-06-21 Guenther Beez Vorrichtung zur Optimierung der Spaltweite bei Kreiselpumpen
DE10038586A1 (de) * 2000-08-03 2002-02-14 Ksb Ag Axialschubausgleichseinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771927A (en) 1972-03-15 1973-11-13 Purex Corp Impeller running clearance adjustment device
US4487557A (en) * 1982-09-28 1984-12-11 Autoclave Engineers Magnetically driven centrifugal pump
FI824113A0 (fi) 1982-11-30 1982-11-30 Ahlstroem Oy Foerfarande och anordning foer fibrering av foerbehandlat avfallspapper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513116A1 (de) * 1985-04-12 1986-10-23 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Spaltdichtung an laufraedern von kreiselpumpen
US5306124A (en) 1993-03-24 1994-04-26 Laibe Supply Corporation Slurry pump and seal system
EP0688955A1 (fr) * 1994-06-23 1995-12-27 KSB Aktiengesellschaft Dispositif pour l'équilibrage de la poussée axiale dans les pompes centrifuges
DE19960160A1 (de) * 1999-12-14 2001-06-21 Guenther Beez Vorrichtung zur Optimierung der Spaltweite bei Kreiselpumpen
DE10038586A1 (de) * 2000-08-03 2002-02-14 Ksb Ag Axialschubausgleichseinrichtung

Also Published As

Publication number Publication date
EP1296062B1 (fr) 2011-01-05
DE20115516U1 (de) 2001-11-29
US6746206B2 (en) 2004-06-08
DE50214845D1 (de) 2011-02-17
US20030072650A1 (en) 2003-04-17

Similar Documents

Publication Publication Date Title
WO2014086472A1 (fr) Pompe centrifuge, en particulier pour eaux usées ou eaux grasses
DE69901673T2 (de) Befestigungsmittel
DE2656991A1 (de) Wolf zum zerkleinern von lebensmitteln
WO2009138082A1 (fr) Dispositif pour l'étanchéité du rotor de pompes centrifuges
EP1296062B1 (fr) Pompe centrifugale
DE112004001198T5 (de) Laufradflügelaufbau für eine Zentrifugalpumpe
EP2535589A2 (fr) Pompe pour barre de coupe
EP2348220B1 (fr) Pompe submersible
DE69114232T2 (de) Zentrifugalpumpe.
DE2512263A1 (de) Zentrifugalpumpe
DE4122487C1 (fr)
DE102018009873A1 (de) Schneidewerk für eine Abwasser-Tauchpumpe
DE102011018434B4 (de) Kreiselpumpe mit Schneidwerk
EP1837078A1 (fr) Hache-viande
EP1300594A1 (fr) Pompe centrifuge pour des eaux usées
EP3515602B1 (fr) Broyeur fin
DE3715322C1 (en) Meat-mincing machine having a separating device for soft and hard parts of cut material
DE3317733C2 (fr)
DE68907505T2 (de) Hydraulische Pumpe, insbesondere für Geschirrspülmaschinen und dergleichen.
DE69200025T2 (de) Gerät zum Ablösen von Gut vom Stengel einer Pflanze.
EP3467319A1 (fr) Pompe centrifuge à joint d'étanchéité pour bride d'aspiration amélioré
DE1561632C3 (de) Stoffmühle für Fasersuspensionen
DE10030957C1 (de) Kreiskolbenpumpe
DE2748555A1 (de) Schrot- und siliermaschine fuer feldfruechte
DE3432255A1 (de) Mehrstufige zerkleinerungsvorrichtung, insbesondere fuer schwer reissbare plastikfolien, gummiregenerate oder dergleichen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030627

AKX Designation fees paid

Designated state(s): DE FR GB IT NL

17Q First examination report despatched

Effective date: 20090407

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50214845

Country of ref document: DE

Date of ref document: 20110217

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 50214845

Country of ref document: DE

Effective date: 20110217

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20110105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110105

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20111006

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 50214845

Country of ref document: DE

Effective date: 20111006

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20210930

Year of fee payment: 20

Ref country code: FR

Payment date: 20210927

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20210923

Year of fee payment: 20

Ref country code: GB

Payment date: 20210923

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50214845

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20220912

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20220912