EP0013942A2 - Pompe centrifuge pour liquides contenant des matières solides - Google Patents

Pompe centrifuge pour liquides contenant des matières solides Download PDF

Info

Publication number
EP0013942A2
EP0013942A2 EP80100220A EP80100220A EP0013942A2 EP 0013942 A2 EP0013942 A2 EP 0013942A2 EP 80100220 A EP80100220 A EP 80100220A EP 80100220 A EP80100220 A EP 80100220A EP 0013942 A2 EP0013942 A2 EP 0013942A2
Authority
EP
European Patent Office
Prior art keywords
impeller
pump
bearing
housing
drive shaft
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
EP80100220A
Other languages
German (de)
English (en)
Other versions
EP0013942A3 (en
EP0013942B1 (fr
Inventor
Hans Beham
Hans-Dieter Beham
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.)
Beham Hans
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT80100220T priority Critical patent/ATE8924T1/de
Publication of EP0013942A2 publication Critical patent/EP0013942A2/fr
Publication of EP0013942A3 publication Critical patent/EP0013942A3/de
Application granted granted Critical
Publication of EP0013942B1 publication Critical patent/EP0013942B1/fr
Expired 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/049—Roller bearings
    • 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

Definitions

  • the invention relates to a centrifugal pump according to the preamble of claim 1.
  • Centrifugal pumps of a type deviating from the preamble of patent claim 1 are also known, in which the annular discharge member forming the liquid inlet is arranged on the same housing end face on which the drive shaft also enters the pump housing.
  • the liquid enters the pump housing from above and is discharged via a tangential outlet line.
  • the bearings of the drive shaft are not under the liquid pressure of the conveyor Stream but only under the hydrostatic pressure of the liquid on the pump, which is, however, relatively low compared to the liquid pressure of the flow, so that with these pumps a sealing of the bearing against the liquid with relatively long running times is possible.
  • such pumps cannot be used for a number of applications.
  • the object of the invention is to provide an improved compared to the prior art centrifugal pump, in which the end member, the impeller and the bearing of the impeller forms a hermetically sealed unit against the liquid pressure of the flow, so that in particular the service life of the impeller bearing is not due to corrosion on the part of fluid to be pumped can be affected. This is achieved by the characterizing features of patent claim 1.
  • the main advantage of the subject matter of the invention is that the annular space formed by the inner surface of the impeller and the bearing journal at its inner end, that is to say the end which faces the driver of the drive shaft, can be absolutely hermetically sealed against the liquid pressure of the feed stream, since one the seal provided for this purpose is not axially penetrated by a component, for example the drive shaft.
  • the development according to claim 5 ensures that the gap between the envelope jacket of the impeller and the envelope jacket defined by the inner surface of the cage web or the inner surfaces of the cage webs can be adjusted depending on the respective state of wear.
  • the development according to claim 6 ensures that the bearing of the impeller on outer end of the journal is relatively insensitive to the ingress of liquid due to the hydrostatic pressure, in contrast to a ball bearing.
  • the eccentricity play of the drive shaft their end facing the bearing pin is reliably limited, which can be particularly important in the event of intermittent radial loads on the impeller by suction of solids and in the limitation of resonance vibration amplitudes of the drive shaft.
  • the embodiment according to claim 11 ensures that the contact surface of the eccentricity limitation bearing can be relatively large, so that its wear can be neglected over the entire service life of the pump.
  • the centrifugal pump illustrated there comprises a four-bladed pump impeller 1 which is mounted in a surrounding pump housing 2 of circular cross section.
  • an annular end member 3 is detachably fastened by means of a plurality of screws 4 distributed over the circumference.
  • the end member 3 comprises at its outer end facing away from the pump housing 2 a receptacle 5 for a central bearing journal 6.
  • the receptacle 5 is via two diametrical eccentric cage webs 7, which diverge conically towards the pump housing 2, with the circumference of a component of the end member 3 forming base ring flange 8 connected.
  • the edges 9 of the webs 7 opposite the jacket envelope of the impeller 1 can be provided with hard metal build-up welding beads to form tear edges. This also applies to the outer edges of the impeller 1 that define a jacket envelope.
  • the bearing pin 6 is clamped in the receptacle 5 by means of centering screws 10 and can be adjusted axially for adjustment purposes, around the annular gap between the edges 9 of the webs 7 and the imaginary envelope of the impeller 1 Set a predetermined favorable value, without prejudice to possible wear on the edges of the blades of the impeller 1 or the edges 9 of the webs 7 cooperating therewith.
  • the bearing journal 6 takes a radial / axial ball bearing 11, which is held axially immovable by means of a snap ring 12.
  • the outer ring of the ball bearing 11 is pressed into an axial bore at the inner end of the impeller 1 and secured there against axial displacement by a snap ring 13.
  • the impeller 1 is mounted by means of a plain bearing 14. Downstream of the slide bearing in the direction of the outer end of the journal 6 is an axial seal or stuffing box seal 15, on which only the hydrostatic pressure of the liquid on the pump acts.
  • the inner cross section of the axial bore of the impeller 1 adjacent to the end face of the inner end of the bearing journal 6 or adjacent to the ball bearing 11 is hermetically sealed against the liquid pressure of the delivery flow of the pump by means of a cap-like plastic plug 16.
  • the annular space 17 formed by the bearing journal 6 and the inner surface of the impeller 1 g surrounding it is filled with bearing grease from the plain bearing 14 to the stopper 16.
  • a casing tube 20 is fastened, which serves to encapsulate a drive shaft 21 which runs essentially centrally therein.
  • a flange-like driver 23 is fastened on the drive shaft 21 by means of a heavy-duty spring pin 22, which engages with corresponding end-side incisions of the impeller 1 via a plurality of axial driver claws 24 distributed over the circumference.
  • the driver 23 is received at an end portion with radial play in the central bore of the impeller 1, in which the ball bearing 11 is also seated.
  • the driver 23 and indirectly also the drive shaft 21 is assigned an eccentricity limiting bearing 25 which is held with centering projections 26 in the associated end face of the pump housing 2 and is held in position by means of the screws 19 by the segments of the clamping flange 18.
  • the central bore of the eccentricity limitation bearing 25 has a larger diameter than the outer diameter of the surrounding assigned section of the driver 23, so that the drive shaft 21 has a total of a radial clearance both with respect to the eccentricity limitation bearing 25 and against the impeller 1.
  • the centrifugal pump is arranged below a liquid level S.
  • the liquid to be pumped reaches both Webs 7 according to the curved arrows Pf in the area of the impeller and is conveyed by this upward into the pump housing 2, where it emerges through a tangential outlet pipe 27.
  • the fluid pressure specific to the pump is only reached in the pump housing 2, so that, as has already been mentioned in the introduction, the plain bearing 14 is only under the hydrostatic pressure of the fluid.
  • the plug 16 is under the full liquid pressure of the flow, but a hermetic seal is achieved because the plug 16 is neither penetrated by the journal 6 nor by the drive shaft 21.
  • liquid standing under the liquid pressure of the delivery flow can enter the jacket tube 20 from the annular space formed between the eccentricity limiting bearing 25 and the driver 23, but this does not damage bearings, since the drive shaft 21 only on its (not shown) the upper end is mounted far above the liquid level S.
  • the entire structural unit consisting of the impeller 1, the end member 3, the bearing journal 6 together with bearings 11, 14 can be dismantled by loosening the screws 4 from the pump housing 2 and by another unit to be replaced. This replacement can be done either for repair purposes or for the purpose of converting the pump to other pump parameters. In the latter case, a structural unit with other parameters of the impeller 1 is attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP80100220A 1979-01-17 1980-01-17 Pompe centrifuge pour liquides contenant des matières solides Expired EP0013942B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80100220T ATE8924T1 (de) 1979-01-17 1980-01-17 Kreiselpumpe fuer mit feststoffen versetzte fluessigkeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2901638A DE2901638B1 (de) 1979-01-17 1979-01-17 Kreiselpumpe fuer mit Feststoffen versetzte Fluessigkeiten
DE2901638 1979-01-17

Publications (3)

Publication Number Publication Date
EP0013942A2 true EP0013942A2 (fr) 1980-08-06
EP0013942A3 EP0013942A3 (en) 1980-08-20
EP0013942B1 EP0013942B1 (fr) 1984-08-08

Family

ID=6060742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100220A Expired EP0013942B1 (fr) 1979-01-17 1980-01-17 Pompe centrifuge pour liquides contenant des matières solides

Country Status (3)

Country Link
EP (1) EP0013942B1 (fr)
AT (1) ATE8924T1 (fr)
DE (1) DE2901638B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000000745A1 (fr) * 1998-06-30 2000-01-06 Abs Pump Production Ab Pompe centrifuge
WO2001088380A1 (fr) * 2000-02-24 2001-11-22 Hamworthykse A.S Système de palier dans une pompe centrifuge
WO2006058605A1 (fr) * 2004-12-03 2006-06-08 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Pompe avec roue sécatrice
CN115059619A (zh) * 2022-08-16 2022-09-16 服务型制造研究院(杭州)有限公司 一种工业泵

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327425A1 (de) * 1992-09-14 1994-03-17 Klein Schanzlin & Becker Ag Lagerung
DE19638080A1 (de) * 1996-09-19 1998-03-26 Uts Umwelt Technik Sued Gmbh Pumpe
RU2113274C1 (ru) * 1996-06-17 1998-06-20 Владимир Павлович Грудинин Устройство для перекачивания и обработки влажной волокнистой массы
DE19961196A1 (de) * 1999-12-18 2001-06-28 Erich Stallkamp Pumpe, insbesondere Kreiselpumpe für Dickstoffe
CN103727055B (zh) * 2013-12-13 2016-06-22 山西临龙泵业有限公司 单极单吸双叶道高压泵
SE2350004A1 (en) * 2023-01-04 2024-07-05 Surfcleaner Ab Rotor system for a pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE334496C (de) * 1920-06-04 1921-03-14 Luftverwertungs Ges M B H Kreiselpumpe fuer Saeuren
DE526779C (de) * 1931-06-10 Armaturen & Maschinenfabrik Ak Kreiselpumpe
GB539172A (en) * 1939-05-25 1941-08-29 Nash Engineering Co Pump
US3155043A (en) * 1960-03-28 1964-11-03 Klaus Franz Centrifugal pumps
GB1024890A (en) * 1964-01-03 1966-04-06 Wynstruments Ltd Improvements in centrifugal pump units
DE1276450B (de) * 1961-01-09 1968-08-29 Loewe Pumpenfabrik G M B H Kreiselpumpe, insbesondere Heizungsumwaelzpumpe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526779C (de) * 1931-06-10 Armaturen & Maschinenfabrik Ak Kreiselpumpe
DE334496C (de) * 1920-06-04 1921-03-14 Luftverwertungs Ges M B H Kreiselpumpe fuer Saeuren
GB539172A (en) * 1939-05-25 1941-08-29 Nash Engineering Co Pump
US3155043A (en) * 1960-03-28 1964-11-03 Klaus Franz Centrifugal pumps
DE1276450B (de) * 1961-01-09 1968-08-29 Loewe Pumpenfabrik G M B H Kreiselpumpe, insbesondere Heizungsumwaelzpumpe
GB1024890A (en) * 1964-01-03 1966-04-06 Wynstruments Ltd Improvements in centrifugal pump units

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Rührmixpumpe RSD/RED2 Gascoigne/Südstall *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000000745A1 (fr) * 1998-06-30 2000-01-06 Abs Pump Production Ab Pompe centrifuge
US6464454B1 (en) 1998-06-30 2002-10-15 Abs Pump Production Ab Centrifugal pump
WO2001088380A1 (fr) * 2000-02-24 2001-11-22 Hamworthykse A.S Système de palier dans une pompe centrifuge
WO2006058605A1 (fr) * 2004-12-03 2006-06-08 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Pompe avec roue sécatrice
US7967553B2 (en) 2004-12-03 2011-06-28 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Pump with cutting impeller
CN115059619A (zh) * 2022-08-16 2022-09-16 服务型制造研究院(杭州)有限公司 一种工业泵
CN115059619B (zh) * 2022-08-16 2022-12-23 服务型制造研究院(杭州)有限公司 一种工业泵

Also Published As

Publication number Publication date
DE2901638C2 (fr) 1980-08-14
EP0013942A3 (en) 1980-08-20
ATE8924T1 (de) 1984-08-15
DE2901638B1 (de) 1979-08-30
EP0013942B1 (fr) 1984-08-08

Similar Documents

Publication Publication Date Title
DE2854656C2 (de) Kreiselpumpe mit einem Laufrad und zwei vorgeschalteten Axialrädern
AT501757B1 (de) Radiale dichtungsvorrichtung
WO1992000449A1 (fr) Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir
EP0013942B1 (fr) Pompe centrifuge pour liquides contenant des matières solides
DE19519799B4 (de) Kreiselpumpe
EP2932105A2 (fr) Dispositif de pompage comportant un élément de guidage d'écoulement
DE102008035972A1 (de) Vakuumpumpanordnung
DE2027183A1 (de) Hermetisch abgedichtete Pumpe mit Einlaß und AuslaßJeitungen
EP2766608B1 (fr) Pompe centrifuge pour fluide contenant des particules solides avec fermeture d'un interstice
EP2616640B1 (fr) Pompe à pistons rotatifs et pistons rotatifs
DE2901638C3 (fr)
DE3011380C2 (de) Laufradlagerung an einer Kondensatpumpe
EP3441619B1 (fr) Pompe centrifuge
DE3622269A1 (de) Spaltrohrmotorpumpe
DE10219616B4 (de) Kreiselpumpe
DE2522165A1 (de) Kreiselpumpe
EP2455614A2 (fr) Pompe destinée au transport de liquides
DE1528895C3 (de) Zentrifugalpumpe
DE10019820C2 (de) Pumpe, insbesondere Umwälzpumpe für Haushaltsmaschinen wie Geschirrspülmaschinen
DE3540025A1 (de) Abdichtung fuer eine rotierende, im betrieb aufrecht stehende welle, insbesondere fuer wellen von pumpen und ruehrern
LU102840B1 (de) Schneidring für mit Feststoff belastete Flüssigkeit einer Pumpe
BE1031383B1 (de) Kreiselpumpe, insbesondere Bohrlochpumpe
EP3887029B1 (fr) Rotor pour un dispositif destiné à mélanger de la poudre et du liquide, et dispositif pour mélanger de la poudre et du liquide
EP0995906A1 (fr) Pompe centrifuge double entrainée par un moteur
DE102019103970A1 (de) Rotorpumpe

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810202

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BEHAM, HANS

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LU NL SE

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

Ref country code: SE

Effective date: 19840808

Ref country code: NL

Effective date: 19840808

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19840808

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19840808

Ref country code: BE

Effective date: 19840808

REF Corresponds to:

Ref document number: 8924

Country of ref document: AT

Date of ref document: 19840815

Kind code of ref document: T

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19850117

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

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19850131

Ref country code: CH

Effective date: 19850131

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
GBPC Gb: european patent ceased through non-payment of renewal fee
EN Fr: translation not filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: GB

Effective date: 19881118