CN102889248A - Centrifugal pump with integrated cutting unit - Google Patents
Centrifugal pump with integrated cutting unit Download PDFInfo
- Publication number
- CN102889248A CN102889248A CN2012101979903A CN201210197990A CN102889248A CN 102889248 A CN102889248 A CN 102889248A CN 2012101979903 A CN2012101979903 A CN 2012101979903A CN 201210197990 A CN201210197990 A CN 201210197990A CN 102889248 A CN102889248 A CN 102889248A
- Authority
- CN
- China
- Prior art keywords
- impeller
- centrifugal pump
- cutting
- 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.)
- Pending
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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
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)
Abstract
The invention relates to a centrifugal pump assembly with a cutting unit arranged before a medium flows into an impeller (2). The cutting unit (1) has a cutting surface (3) having openings (5) through which the medium flows. A rotary cutting portion (4) lies on the cutting surface (3). The cutting portion (4) and the impeller (2) are rotated together by a motor (11). According to the invention, a control device is associated with the motor (11) for controlling the impeller (2) to rotate with the cutting portion (4) at intervals in a different direction. The impeller (2) is provided with blades (16) which are extended in a purely radial direction, so that the centrifugal pump exhibits same characteristic curves in both rotation directions.
Description
Technical field
The present invention relates to a kind of centrifugal pump assembly with cutting machine (Schneidwerk), before cutting machine is arranged in the medium inflow impeller, wherein, cutting machine has the cutting surface and the cutting body that abuts in the rotation at cutting surface place with opening, media flow is passed through opening, wherein, cutting body and impeller place rotation by motor jointly.
Background technique
Carrying with thick during with municipal wastewater fibrous mixture, pump and line size must design very greatly, so that it has enough large cross section, do not produce thus obstruction.Pump and pipeline occupy thus many spaces and present higher investment demand.
In order also can to use less pump and pipeline, must use cutting machine for fear of blocking, as its among file DE 20 2,009 003 995 U1 by described.Cutting machine connects via flange is installed in the pipeline.Cutting machine has the cutting surface with opening.Media flow is passed opening.Be furnished with the cutting body of rotation before cutting surface, it abuts in the cutting surface place and inswept opening when it rotates.Cutting body utilizes motor to drive.Medium enters in the cutting machine, is deflected 90o and next passes through the outlet discharge by import.Then the medium of chopping can be fed to pump.Cutting machine is the additional independent member with the driving of oneself, and it is installed in before the pump in pipeline.
Relative therewith, in according to such device of preamble of the present invention, use the centrifugal pump with integrated cutting machine.The chopping of solid constituent realizes that by means of cutting machine media flow is passed in the opening that is introduced in the cutting surface therein, and wherein, before cutting surface and/or afterwards the cutting body of rotation abuts in the cutting surface place.
Yet, the diverse principle that also becomes known in the prior art shredding solid, the relative cutting machine that do not use with such device is used to shred solid therein.
Therefore, described a kind of device in file DE 25 36 555 A1, medium at first flows through axial slits and is then shredded in the zone of milling between element and the impeller therein.
In file DE 2 313 403 A, equally do not use cutting machine yet, but realize chopping by the blade (it has the cutting seamed edge of cutter shape) of impeller.
File DE 196 43 729 A1 have described a kind of device for delivery of liquid dung.This device has the housing that is configured to dual-chamber container.But dual-chamber container is separated into sedimentation chamber (Beruhigungsraum) and discharge side by the partition wall of transflective liquid.But the partition wall of transflective liquid and the cutter element of rotation form cutting machine.Drive shaft rotary pump and cutter element.
Along with the duration of operation that increases, cutting effect is owing to the wearing and tearing of cutting seamed edge reduce in cutting machine.Block thus dangerous the rising.The main cause of wearing and tearing is mineral and the metallic mixtures of containing in waste water, and it causes, not only up (auflaufend) cutting seamed edge rust of the part of rotation but also fixing part.Descending (ablaufend) seamed edge is not involved in this.
Summary of the invention
Under this background, the object of the invention is to illustrate a kind of centrifugal pump with integrated cutting machine, and it has higher efficient and its cutting machine is also guaranteed higher cutting effect in the long operation phase.
This purpose realizes thus that according to the present invention namely, motor is associated with control gear, it allows impeller along with cutting body rotates in different sense of rotation off and on, wherein, the blade of impeller upwards extends in pure footpath, so that centrifugal pump has identical characteristic curve two sense of rotation.
Centrifugal pump comprises that by shaft-driven impeller, this axle places rotation by motor.According to the present invention, the centrifugal pump assembly comprises control gear, and it is set up for operating motor in different sense of rotation.Thus, impeller and cutting body jointly rotate in the sense of rotation of conversion with a gap.
Regular sense of rotation counter-rotating can be by realizing that as the motor of control gear wherein, especially three-phase synchronous motor, asynchronous motor, d.c. motor or alternating direct-current motor are suitable as motor with corresponding switching mechanism.Sense of rotation counter-rotating causes the effect of self sharpening of cutting machine.At this, the descending cutting seamed edge of the cutting body of rotation and cutting surface is by sharpening, and the wearing and tearing of up seamed edge.Guarantee to keep obtaining cutting power by the regular conversion of sense of rotation.Guarantee thus the higher working life of cutting machine.
Its blade used according to the invention is from spin axis outward extending impeller point-blank.By using the impeller with blade system (Beschaufelung) (it upwards stretches out in pure footpath point-blank), realize the conveying characteristic that does not rely on sense of rotation of centrifugal pump.Compare with traditional centrifugal pump (with the blade trend of bending), characteristic curve and power consumpiton and so the impeller effect identical on two sense of rotation.
In a particularly advantageous embodiment, the flow cavity mirror image between impeller and housing is symmetrical in pressure tap axis (Druckstutzenachse) and constructs.Preferably, impeller is centered on by the doughnut housing.Compare with shaped spiral housing, realize not relying on the conveying characteristic of sense of rotation by such housing.The pump curve of centrifugal pump is identical on two sense of rotation with the efficiency characteristic curve.
Cutting body is connected with impeller antitorquely.At this, when cutting body is fixed on the end of axle of drives impeller via fastening piece, turn out to be particularly advantageous.In of the present invention one favourable embodiment, the center is in the spin axis of axle, and the hole is introduced into the axle that passes cutting body, impeller and hold fastening piece.Fastening piece preferably is embodied as bolt.The hole has screw thread in the zone of impeller and/or axle, bolted joints arrives wherein.To this alternatively or addedly, cutting body also can be connected with the impeller rotationally fixedly by means of pin.
In of the present invention one particularly advantageous embodiment, cutting surface is integrated in the suction cover (Saugdeckel) of centrifugal pump and fills the whole suction cross sectional area that suction is taken over.
Description of drawings
Other feature and advantage of the present invention from embodiment with reference to the accompanying drawings explanation and draw from accompanying drawing itself.Wherein:
Fig. 1 has shown the axial section with the centrifugal pump of integrated cutting machine,
Fig. 2 has shown the front elevation of cutting machine,
Fig. 3 has shown the radial section of impeller and housing,
Fig. 4 has shown the diagram with the perspectivity of the centrifugal pump of integrated cutting machine.
Embodiment
Fig. 1 has shown the centrifugal pump with integrated cutting machine 1.Before cutting machine 1 is arranged in the medium inflow impeller 2.Cutting machine 1 comprises the cutting body 4 of fixing cutting surface 3 and rotation.Cutting surface 3 is embodied as septum annular, flat in this embodiment, and it has opening 5, and media flow is by opening 5.Cutting surface 3 is integrated in the suction cover 6 of centrifugal pump and fills whole inflow cross sectional area.Cutting body 4 rotation and at this inswept opening 5 before cutting surface 3.Cutting body 4 comprises cutter 7, and it abuts in cutting surface 3 places.It is pressed to cutting surface 3 with impacting force F.
Cutting body 4 is fixed on the end of axle 8.To this, cutting body 4 and impeller 2 centers and its spin axis are provided with hole 9, and it is extended in the end face of axle 8.Fixed element 10 is introduced in the hole 9.Fixed element 10 is bolts, and it joins in the screw thread that hole 9 has in the zone of axle 8.
Cutting body 4 is connected with axle 8 with impeller 2 antitorquely.Axle 8 is driven by motor 11.Relate to the motor that comprises stator 12 and rotor 13 at this.Motor 11 is centered on by motor casing 14.Impeller 2 is centered on by housing 15.The blade 16 of impeller 2 is molded in cover plate 17 places.Medium leaves centrifugal pump by pressure tap 18.Motor casing 14 and housing 15 for assembling essential separate for the reason of clarity not shown.
Impeller 2 and cutting body 4 place rotation by motor 11 jointly.Cutting body 4 is pressed to cutting surface 3 with power F.
According to the present invention, motor 11 is associated with control gear, and it allows impeller 2 along with cutting body 4 rotates in opposite sense of rotation off and on.Preferably, the time lag for each sense of rotation is isometric.
For each sense of rotation, the descending cutting seamed edge of cutter 7 and cutting surface 3 is by sharpening, and the wearing and tearing of up seamed edge.Sense of rotation is transformed from certain degree of wear, so that the seamed edge that is worn before sharpening again.
Fig. 2 has shown the front elevation of cutting machine 1.Cutting surface 3 is embodied as circular septum, and it is provided with opening 5, and media flow is by opening 5.
Cutting body 4 comprises four fins 19, the opening 5 of it is inswept cutting surface 3.Fin 19 is molded in matrix 20 places of cylindricality and upwards stretches out in pure footpath point-blank from spin axis.Each fin 19 has cutter 7 at its place, side in the face of cutting surface 3.The cutter 7 of cutting body 4 directly abuts in cutting surface 3 places.
Cutting body 4 is fixed on the end of axle 8 via fastening piece 10.In this embodiment, bolt is used as fastening piece 10.
Fig. 3 has shown the radial section of impeller 2 and housing 15.The blade 16 of impeller 2 is molded in cover plate 17 places and leads to star spin axis.It is point-blank in the pure trend of radially constructing and therefore not being presented at common bending in the centrifugal pump.The layout mirror image of blade 16 is symmetrical in pressure tap axis 21.
Medium by inlet opening 22 enter in the impeller 2, the blade 16 and leave centrifugal pump by pressure tap 18 of flowing through.Impeller 3 is fixed on the end of axle 8 by fastening piece 10.
Impeller 2 is centered on by housing 15, and it is constructed according to the invention to be toroidal shell, so that impeller 2 has identical conveying characteristic two sense of rotation.Flow cavity 23 mirror images between impeller 2 and housing 15 are symmetrical in pressure tap axis 21 and construct.
Fig. 4 has shown the diagram with the perspectivity of the centrifugal pump of integrated cutting machine 1.In this shown here cutting body 4, the cutting seamed edge is molded directly into fin 19 places, does not need extra cutter 7 thereby compare with described variant before.Fin 19 directly abuts in cutting surface 3 places.Fin 19 is molded into matrix 20 places of cylindricality and stretches out with star.
Suction cover 6 has recess, and the cutting surface 3 that is configured to circular septum inserts wherein with flushing.Opening 5 suction media by septum 3.The fin 19 inswept openings 5 of cutting body 4 when rotated.
Impeller 2 has blade 16, and it upwards stretches out in pure footpath point-blank.Blade 16 is molded in cover plate 17 places of impeller 2 as square projection.
Impeller 2 and cutting body 4 interconnect via pin 24 in the variant shown in Fig. 4 antitorquely.Impeller 2 places rotation by axle 8.Because impeller 2 and cutting body 4 are connected via pin 24, cutting body 4 rotates with the rotating speed identical with impeller 2 and axle 8.
In the variant shown in Fig. 4, cutting body 4 can be arranged on the piston 25 with moving axially.
Claims (9)
1. centrifugal pump assembly with cutting machine (1), before described cutting machine (1) is arranged in the medium inflow impeller (2), wherein, described cutting machine (1) has with the cutting surface (3) of opening (5) and abuts in the cutting body (4) of the rotation that described cutting surface (3) locates, described media flow is by described opening (5), wherein, described cutting body (4) and described impeller (2) place rotation by motor (11) jointly, it is characterized in that, described motor (11) is associated with control gear, it allows described impeller (2) along with described cutting body (4) rotates in different sense of rotation off and on, wherein, the blade (16) of described impeller (2) upwards extends in pure footpath, so that described centrifugal pump has identical characteristic curve two sense of rotation.
2. centrifugal pump assembly according to claim 1 is characterized in that, the flow cavity (23) between impeller (2) and housing (15) is symmetrical in pressure tap axis (21) and constructs.
3. centrifugal pump assembly according to claim 2 is characterized in that, the described housing (15) that centers on described impeller (2) is configured to the doughnut housing.
4. each described centrifugal pump assembly in 3 according to claim 1 is characterized in that described cutting body (4) is fixed on the end of the axle (8) that is driven by described motor (11) by means of fastening piece (10).
5. centrifugal pump assembly according to claim 4 is characterized in that, the center is in described spin axis, and hole (9) extend through described cutting body (4), described impeller (2) and hold the axle (8) of described fastening piece (10).
6. centrifugal pump assembly according to claim 5, it is characterized in that, described fastening piece (10) is embodied as bolt and described hole (9) have screw thread in the zone of described impeller (2) and/or described axle (8), and described bolted joints arrives wherein.
7. each described centrifugal pump assembly in 6 according to claim 1 is characterized in that described cutting body (4) is connected with described impeller (2) by means of pin (24).
8. each described centrifugal pump assembly in 7 according to claim 1 is characterized in that, described cutting surface (3) is integrated in the recess in the suction cover (6) of described centrifugal pump and fills the whole suction cross sectional area that suction is taken over.
9. each described centrifugal pump assembly in 8 according to claim 1 is characterized in that described motor (11) is embodied as syncmotor, asynchronous motor, d.c. motor or alternating direct-current motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011077545.5 | 2011-06-15 | ||
| DE102011077545A DE102011077545A1 (en) | 2011-06-15 | 2011-06-15 | Centrifugal pump with integrated cutting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102889248A true CN102889248A (en) | 2013-01-23 |
Family
ID=46168177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101979903A Pending CN102889248A (en) | 2011-06-15 | 2012-06-15 | Centrifugal pump with integrated cutting unit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2535590A3 (en) |
| CN (1) | CN102889248A (en) |
| DE (1) | DE102011077545A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533844A (en) * | 2014-12-25 | 2015-04-22 | 解树超 | Sewage pump medium separating cover, sewage pump with sewage pump medium separating cover and medium separating method |
| CN106907327A (en) * | 2017-04-26 | 2017-06-30 | 佛山市肯富来工业泵有限公司 | The method that the dredge pump anti-block system and control unit of pumping plant control cutting part |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4114815A (en) * | 1975-09-29 | 1978-09-19 | C. Van Der Lely N.V. | Apparatus for conninuting solids in liquids |
| SU715826A1 (en) * | 1978-07-31 | 1980-02-15 | Центральный Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства Нечерноземной Зоны Ссср | Centrifugal pump |
| EP0911527A1 (en) * | 1997-10-25 | 1999-04-28 | ORPU - Oranienburger Pumpen und Verdichter GmbH | Pump with a cutting device |
| CN2929263Y (en) * | 2006-06-08 | 2007-08-01 | 上海连成（集团）有限公司 | Waste water pump with cutting and reverse flushing double function |
| CN201255138Y (en) * | 2008-05-27 | 2009-06-10 | 深圳市兴日生实业有限公司 | Centrifugation water pump impeller assembly collocated with impeller blade |
| US20100322756A1 (en) * | 2009-06-23 | 2010-12-23 | Schmidt P E William | Grinder Pump |
| CN201763664U (en) * | 2010-08-24 | 2011-03-16 | 开利泵业(集团)有限公司 | Cutting device for submersible sewage pump |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2714354A (en) * | 1952-09-08 | 1955-08-02 | Orrin E Farrand | Pump |
| US3786996A (en) | 1972-03-20 | 1974-01-22 | Tec Group | Axial flow unit |
| US3961758A (en) | 1974-08-23 | 1976-06-08 | Peabody Barnes, Inc. | Centrifugal pump with integral grinder |
| US3973866A (en) * | 1975-01-02 | 1976-08-10 | Vaughan Co., Inc. | Centrifugal chopping slurry pump |
| 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 (en) * | 1992-04-03 | 1992-08-06 | Sihi Gmbh & Co Kg, 2210 Itzehoe, De | |
| DE19643729A1 (en) | 1996-10-23 | 1998-04-30 | Sebastian Zunhammer | Delivery of inhomogeneous fluids, especially manure |
| DE29910596U1 (en) * | 1999-06-17 | 1999-09-09 | Hugo Vogelsang Maschinenbau Gm | Device for crushing solids in inhomogeneous liquids |
| DE202005011680U1 (en) * | 2005-07-26 | 2005-12-15 | Herberg, Friedrich, Dr.-Ing. | Centrifugal pump, has rotor arranged eccentrically in housing, and separator placed coaxial to rotor, where revolutions per minute of separator is different from revolutions per minute of rotor |
| DE202009003995U1 (en) | 2009-03-25 | 2010-08-19 | Hugo Vogelsang Maschinenbau Gmbh | cutter |
-
2011
- 2011-06-15 DE DE102011077545A patent/DE102011077545A1/en not_active Withdrawn
-
2012
- 2012-05-22 EP EP12168834.5A patent/EP2535590A3/en not_active Withdrawn
- 2012-06-15 CN CN2012101979903A patent/CN102889248A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4114815A (en) * | 1975-09-29 | 1978-09-19 | C. Van Der Lely N.V. | Apparatus for conninuting solids in liquids |
| SU715826A1 (en) * | 1978-07-31 | 1980-02-15 | Центральный Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства Нечерноземной Зоны Ссср | Centrifugal pump |
| EP0911527A1 (en) * | 1997-10-25 | 1999-04-28 | ORPU - Oranienburger Pumpen und Verdichter GmbH | Pump with a cutting device |
| CN2929263Y (en) * | 2006-06-08 | 2007-08-01 | 上海连成（集团）有限公司 | Waste water pump with cutting and reverse flushing double function |
| CN201255138Y (en) * | 2008-05-27 | 2009-06-10 | 深圳市兴日生实业有限公司 | Centrifugation water pump impeller assembly collocated with impeller blade |
| US20100322756A1 (en) * | 2009-06-23 | 2010-12-23 | Schmidt P E William | Grinder Pump |
| CN201763664U (en) * | 2010-08-24 | 2011-03-16 | 开利泵业(集团)有限公司 | Cutting device for submersible sewage pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533844A (en) * | 2014-12-25 | 2015-04-22 | 解树超 | Sewage pump medium separating cover, sewage pump with sewage pump medium separating cover and medium separating method |
| CN104533844B (en) * | 2014-12-25 | 2017-12-01 | 东营国安化工有限公司 | The dredge pump and medium separation method of a kind of sewage pump medium separation hood and its composition |
| CN106907327A (en) * | 2017-04-26 | 2017-06-30 | 佛山市肯富来工业泵有限公司 | The method that the dredge pump anti-block system and control unit of pumping plant control cutting part |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2535590A2 (en) | 2012-12-19 |
| DE102011077545A1 (en) | 2012-12-20 |
| EP2535590A3 (en) | 2018-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130123 |
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| RJ01 | Rejection of invention patent application after publication |