EP2535590A2 - Pompe centrifuge avec barre de coupe intégrée - Google Patents
Pompe centrifuge avec barre de coupe intégrée Download PDFInfo
- Publication number
- EP2535590A2 EP2535590A2 EP12168834A EP12168834A EP2535590A2 EP 2535590 A2 EP2535590 A2 EP 2535590A2 EP 12168834 A EP12168834 A EP 12168834A EP 12168834 A EP12168834 A EP 12168834A EP 2535590 A2 EP2535590 A2 EP 2535590A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- cutting
- centrifugal pump
- motor
- pump assembly
- 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.)
- Withdrawn
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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
- B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
-
- 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
Definitions
- the invention relates to a centrifugal pump assembly with a cutting mechanism, which is arranged in front of the inflow of the medium in an impeller, the cutting mechanism having a cutting surface with openings through which the medium flows and has a rotating cutting body, which abuts the cutting surface, wherein the cutting body and the Impeller be put together by a motor in rotation.
- the pumps and piping When pumping municipal sewage with coarse and fibrous admixtures, the pumps and piping must be very large in size so that they have a sufficiently large cross-section to prevent clogging.
- the pumps and pipelines take up a lot of space and represent a high investment requirement.
- the cutting unit In order to be able to use even smaller pumps and pipelines, a cutting unit must be used to prevent clogging, as in the DE 20 2009 003 995 U1 is described.
- the cutting unit is installed in the pipeline via a flange connection.
- the cutting mechanism has a cutting surface with openings.
- the medium flows through the openings.
- a rotating cutting body In front of the cutting surface, a rotating cutting body is arranged, which abuts against the cutting surface and the openings extends over its rotation.
- the cutting body is driven by a motor.
- the medium enters the cutting unit through an inlet opening, is deflected by 90 ° and then exits through an outlet opening.
- the minced Medium can then be supplied to a pump.
- the cutting unit is an additional separate component with its own drive, which is installed in the pipeline in front of the pump.
- centrifugal pumps are used with integrated cutting unit.
- the DE 196 43 729 A1 describes a device for the promotion of manure.
- the device has a housing designed as a double-chamber container.
- the dual-chamber container is separated by a liquid-permeable partition into a settling chamber and an outlet space.
- the liquid-permeable partition wall forms a cutting unit with a rotating cutting element.
- a drive shaft drives a rotary pump and the cutting element.
- the present invention seeks to provide a centrifugal pump with integrated cutting, which has a high efficiency and their cutting ensures a high cutting efficiency even over long periods of operation.
- the motor is associated with a control device which can circulate the impeller and the cutting body at intervals in different directions of rotation, wherein the blades of the impeller extend in a purely radial direction, so that the centrifugal pump in both directions of rotation the same characteristic having.
- the centrifugal pump assembly includes an impeller driven by a shaft that is rotated by a motor.
- the centrifugal pump arrangement comprises a control device which is set up to operate the motor in different directions of rotation. As a result, run the impeller and the cutting body together at intervals in changing rotational directions.
- the regular reversal of direction can be done by an electric motor with a corresponding rear derailleur as a control device, which are suitable as an electric motor, in particular a three-phase synchronous motor, an asynchronous motor, a DC motor or an AC motor.
- the reversal of direction causes a self-sharpening effect of the cutting unit.
- the running cutting edges of the rotating cutting body and the cutting surface are sharpened while the leading edges wear out.
- a regular change of the direction of rotation ensures that the cutting ability is maintained. This ensures a long life of the cutting unit.
- an impeller is used whose blades extend straight from the axis of rotation to the outside.
- a rotational direction-independent conveying characteristic of the centrifugal pump is achieved.
- the characteristic curve and the power consumption and thus the impeller effect are the same in both directions of rotation.
- the flow space between the impeller and the housing is formed mirror-symmetrically to the discharge nozzle axis.
- the impeller is surrounded by an annular space housing.
- annular space housing By such a housing, in contrast to a spiral housing, a direction of rotation-independent conveying characteristic is achieved.
- the pump characteristic and the efficiency curve of the centrifugal pump are identical in both directions of rotation.
- the cutting body is rotatably connected to the impeller. It proves to be particularly advantageous if the cutting body is fastened via a fastening means on the end face of the shaft which drives the impeller.
- a bore through the cutting body, the impeller and the shaft is introduced centrally of the axis of rotation of the shaft, which receives the fastener.
- the fastening means is preferably designed as a screw.
- the bore has a thread in the region of the impeller and / or the shaft into which the screw engages.
- the cutting body can also be connected by means of a pin with the impeller rotationally fixed.
- the cutting surface is integrated in the suction cover of the centrifugal pump and fills the entire intake cross-sectional area of the suction nozzle.
- Fig. 1 shows a centrifugal pump with integrated cutting unit 1.
- the cutting unit 1 is located in front of the inflow of the medium in the impeller 2 ,.
- the cutting unit 1 comprises a fixed cutting surface 3 and a rotating cutting body 4.
- the cutting surface 3 is executed in the embodiment as a circular, flat cutting plate having openings 5 through which the medium flows.
- the cutting surface 3 is integrated in the suction cover 6 of the centrifugal pump and fills the entire inflow cross-sectional area.
- the cutting body 4 rotates and thereby passes over the openings 5.
- the cutting body 4 comprises knives 7, which rest on the cutting surface 3. They are pressed with a contact force F against the cutting surface 3.
- the cutting body 4 is fixed to the end face of a shaft 8.
- the cutting body 4 and the impeller 2 are provided centrally to its axis of rotation with a bore 9, which continues in the end face of the shaft 8.
- a fastener 10 is inserted in the hole 9, a fastener 10 is inserted.
- the fastening element 10 is a screw which engages in a thread which has the bore 9 in the region of the shaft 8.
- the cutting body 4 is rotatably connected to the impeller 2 and the shaft 8.
- the shaft 8 is driven by a motor 11.
- This is an electric motor comprising a stator 12 and a rotor 13.
- the motor 11 is surrounded by a motor housing 14.
- the impeller 2 is surrounded by a housing 15.
- the blades 16 of the impeller 2 are integrally formed on a cover plate 17. Through the discharge port 18, the medium leaves the centrifugal pump.
- the required for mounting division of the motor housing 14 from the housing 15 is not shown for reasons of clarity.
- the impeller 2 and the cutting body 4 are rotated together by the motor 11 in rotation.
- the cutting body 4 is pressed with a force F against the cutting surface 3.
- a control device is associated with the motor 11, which rotates the impeller 2 and the cutting body 4 at intervals in opposite directions of rotation.
- the time intervals for each direction of rotation are the same length.
- Fig. 2 shows a front view of the cutting unit 1.
- the cutting surface 3 is designed as a circular cutting plate, which is provided with openings 5 through which the medium flows.
- the cutting body 4 comprises four wings 19, which cover the openings 5, the cutting surface 3.
- the wings 19 are integrally formed on a cylindrical base body 20 and extending from the axis of rotation straight in the purely radial direction to the outside.
- Each wing 19 has at its the cutting surface 3 facing Page a knife 7 on.
- the knives 7 of the cutting body 4 lie directly against the cutting surface 3.
- the cutting body 4 is fastened via a fastening means 10 on the end face of the shaft 8.
- a screw is used as a fastening means 10.
- Fig. 3 shows a radial section of the impeller 2 and the housing 15.
- the blades 16 of the impeller 2 are integrally formed on a cover plate 17 and run in a star shape toward the axis of rotation. They are formed in a straight line in a purely radial direction and thus do not show the usual curve with centrifugal pumps.
- the arrangement of the blades 16 is mirror-symmetrical to the pressure nozzle axis 21st
- the medium enters the impeller 2, flows past the blades 16 and leaves the centrifugal pump through the discharge nozzle 18.
- the impeller 3 is fixed by means of a fastening means 10 on the end face of the shaft 8.
- the impeller 2 is surrounded by a housing 15, which is designed according to the invention as an annular housing, so that the impeller 2 has the same conveying characteristic in both directions of rotation.
- the flow space 23 between the impeller 2 and the housing 15 is mirror-symmetrical to the discharge nozzle axis 21.
- Fig. 4 shows a perspective view of a centrifugal pump with integrated cutting unit 1.
- the cutting edges are formed directly on the wings 19, so that no additional knives 7 are required in contrast to the variant described above.
- the wings 19 are located directly on the cutting surface 3.
- the wings 19 are integrally formed on a cylindrical base body 20 and extend in a star shape to the outside.
- the suction cover 6 has a recess into which the cutting surface 3 designed as a circular cutting insert fits flush. Through the openings 5 the cutting plate 3, the medium is sucked. During rotation, the wings 19 of the cutting body 4 overlap the openings 5.
- the impeller 2 has blades 16 which extend in a straight line in the purely radial direction to the outside.
- the blades 16 are formed as cuboid elevations on the cover plate 17 of the impeller 2.
- the impeller 2 and the cutting body 4 are in the in Fig. 4 variant shown connected via a pin 24 rotatably connected to each other.
- the impeller 2 is rotated by the shaft 8. Due to the connection of the impeller 2 with the cutting body 4 via the pin 24, the cutting body 4 rotates at the same speed as impeller 2 and shaft eighth
- the cutting body 4 is arranged axially displaceably on a piston 25.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011077545A DE102011077545A1 (de) | 2011-06-15 | 2011-06-15 | Kreiselpumpe mit integriertem Schneidwerk |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2535590A2 true EP2535590A2 (fr) | 2012-12-19 |
EP2535590A3 EP2535590A3 (fr) | 2018-03-21 |
Family
ID=46168177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12168834.5A Withdrawn EP2535590A3 (fr) | 2011-06-15 | 2012-05-22 | Pompe centrifuge avec barre de coupe intégrée |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2535590A3 (fr) |
CN (1) | CN102889248A (fr) |
DE (1) | DE102011077545A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104533844B (zh) * | 2014-12-25 | 2017-12-01 | 东营国安化工有限公司 | 一种污水泵介质分离罩及其构成的排污泵及介质分离方法 |
CN106907327B (zh) * | 2017-04-26 | 2019-06-25 | 佛山市肯富来工业泵有限公司 | 泵站的排污泵防堵塞系统及控制部件控制切割部件的方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2313403A1 (de) | 1972-03-20 | 1973-10-04 | Tec Group | Axial-stroemungsmaschine |
DE2536555A1 (de) | 1974-08-23 | 1976-03-04 | Peabody Barnes | Pumpvorrichtung mit zerkleinerer |
DE19643729A1 (de) | 1996-10-23 | 1998-04-30 | Sebastian Zunhammer | Pumpe |
DE202009003995U1 (de) | 2009-03-25 | 2010-08-19 | Hugo Vogelsang Maschinenbau Gmbh | Schneidvorrichtung |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2714354A (en) * | 1952-09-08 | 1955-08-02 | Orrin E Farrand | Pump |
US3973866A (en) * | 1975-01-02 | 1976-08-10 | Vaughan Co., Inc. | Centrifugal chopping slurry pump |
NL163703C (nl) * | 1975-09-29 | 1980-10-15 | Kamps De Wild B V | Inrichting voor het verwerken van vloeibare mest, in het bijzonder mengmest. |
SU715826A1 (ru) * | 1978-07-31 | 1980-02-15 | Центральный Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства Нечерноземной Зоны Ссср | Центробежный насос |
GB2081382B (en) * | 1980-07-18 | 1984-04-18 | Neu Eng Etd | Fans provided with cutting knives |
US4842479A (en) * | 1981-01-29 | 1989-06-27 | Vaughan Co., Inc. | High head centrifugal slicing slurry pump |
US5044566A (en) * | 1989-12-27 | 1991-09-03 | General Signal Corporation | Sewage pump with self-adjusting cutters |
DE9207883U1 (de) * | 1992-04-03 | 1992-08-06 | Otto Tuchenhagen GmbH & Co KG, 2059 Büchen | Reinigbare stopfbuchslose Kreiselpumpe |
ATE199275T1 (de) * | 1997-10-25 | 2001-03-15 | Orpu Gmbh | Pumpe mit einer schneideinrichtung |
DE29910596U1 (de) * | 1999-06-17 | 1999-09-09 | Hugo Vogelsang Maschinenbau GmbH, 49632 Essen | Vorrichtung zum Zerkleinern von Feststoffen in inhomogenen Flüssigkeiten |
DE202005011680U1 (de) * | 2005-07-26 | 2005-12-15 | Herberg, Friedrich, Dr.-Ing. | Kreiselpumpe mit Schneideinrichtung für fasrige Fremdstoffe |
CN2929263Y (zh) * | 2006-06-08 | 2007-08-01 | 上海连成(集团)有限公司 | 具有切割和反冲洗双重功效的污水泵 |
CN201255138Y (zh) * | 2008-05-27 | 2009-06-10 | 深圳市兴日生实业有限公司 | 配置叶轮刀片的离心水泵叶轮组件 |
US20100319116A1 (en) * | 2009-06-23 | 2010-12-23 | William Schmidt | Waste Pumping System |
CN201763664U (zh) * | 2010-08-24 | 2011-03-16 | 开利泵业(集团)有限公司 | 潜污泵用切割装置 |
-
2011
- 2011-06-15 DE DE102011077545A patent/DE102011077545A1/de not_active Withdrawn
-
2012
- 2012-05-22 EP EP12168834.5A patent/EP2535590A3/fr not_active Withdrawn
- 2012-06-15 CN CN2012101979903A patent/CN102889248A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2313403A1 (de) | 1972-03-20 | 1973-10-04 | Tec Group | Axial-stroemungsmaschine |
DE2536555A1 (de) | 1974-08-23 | 1976-03-04 | Peabody Barnes | Pumpvorrichtung mit zerkleinerer |
DE19643729A1 (de) | 1996-10-23 | 1998-04-30 | Sebastian Zunhammer | Pumpe |
DE202009003995U1 (de) | 2009-03-25 | 2010-08-19 | Hugo Vogelsang Maschinenbau Gmbh | Schneidvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
EP2535590A3 (fr) | 2018-03-21 |
CN102889248A (zh) | 2013-01-23 |
DE102011077545A1 (de) | 2012-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3008346B1 (fr) | Pompe | |
EP2188532B1 (fr) | Roue à aubes de pompe et pompe comprenant une telle roue à aubes de pompe | |
EP2226505B1 (fr) | Roue vortex dotée de bords coupants | |
EP2888484B1 (fr) | Pompe de transport d'eaux usées ainsi que roue et plaque de fond pour celle-ci | |
EP2535589B1 (fr) | Pompe pour barre de coupe | |
CN109863309A (zh) | 切刀轮,切刀盘以及适用于研磨泵的切刀组件 | |
EP3779201B1 (fr) | Élément de raclage pour bords d'attaque de roue à aubes pour des pompes à eau | |
EP2535590A2 (fr) | Pompe centrifuge avec barre de coupe intégrée | |
EP3670920B1 (fr) | Dispositif d'aspiration pour une pompe immergée à eaux usées | |
EP1344944B1 (fr) | Pompe centrifuge avec un dispositif de broyage | |
DE102010005517B4 (de) | Dispergierpumpe | |
DE112008002609T5 (de) | Einlauf-Zerkleinerer | |
DE102015212653B4 (de) | Haushaltsgerät | |
EP2138723B1 (fr) | Pompe centrifuge dotée d'un rotor de courant libre | |
DE102011007960B3 (de) | Pumpe mit einem Schneidwerk | |
DE102011018434B4 (de) | Kreiselpumpe mit Schneidwerk | |
DE102013211181B3 (de) | Pumpe | |
WO2019110659A1 (fr) | Roue à aubes pour pompe à eaux usées | |
DE102012023731B4 (de) | Kreiselpumpe insbesondere für Abwasser oder Schmutzwasser | |
DE10030957C1 (de) | Kreiskolbenpumpe | |
LU102840B1 (de) | Schneidring für mit Feststoff belastete Flüssigkeit einer Pumpe | |
DE102015000634B3 (de) | Rotationssperre, insbesondere für eine Rotationsströmung im Spalttopfbodenbereich einer Magnetkupplungspumpe | |
DE2229650C3 (de) | ZerreiBwerk, insbesondere zum Zerkleinern von Fließmist | |
DE10305726A1 (de) | Kreiselpumpe mit Zerkleinerungseinrichtung | |
DE202005011680U1 (de) | Kreiselpumpe mit Schneideinrichtung für fasrige Fremdstoffe |
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: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KSB SE & CO. KGAA |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F04D 7/04 20060101AFI20180212BHEP Ipc: B01F 5/16 20060101ALI20180212BHEP Ipc: F04D 29/22 20060101ALI20180212BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180922 |