SE527558C2 - Impeller - Google Patents
ImpellerInfo
- Publication number
- SE527558C2 SE527558C2 SE0402840A SE0402840A SE527558C2 SE 527558 C2 SE527558 C2 SE 527558C2 SE 0402840 A SE0402840 A SE 0402840A SE 0402840 A SE0402840 A SE 0402840A SE 527558 C2 SE527558 C2 SE 527558C2
- Authority
- SE
- Sweden
- Prior art keywords
- impeller
- pump
- vanes
- leading edges
- edges
- Prior art date
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
- F04D29/18—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
-
- 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
- F04D29/181—Axial flow rotors
- F04D29/183—Semi axial flow rotors
-
- 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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/11—Kind or type liquid, i.e. incompressible
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
527 558 I litteraturen beskrivs konstruktionerna av pumphjulen mycket generellt, i synnerhet vad gäller framkanternas svepning hos öppna pumphjul. Försöka att definiera svepningen hos framkanterna för ett öppet pumphjul beskrivs t.ex. i EP 09 1685 1 och EP 0916852. 527 558 In the literature, the constructions of the impellers are described very generally, in particular as regards the sweeping of the leading edges of open impellers. Attempts to define the sweep of the leading edges of an open impeller are described e.g. in EP 09 1685 1 and EP 0916852.
Under pumpning där höga lyfthöjder erfordras, t.ex. i gruvor, används ofta slutna pumphjul, d.v.s. sådan med två täckskívor, en övre och en nedre såväl som mellanliggande skovlar eftersom dessa typer av hjul reducerar den axiella belastningen på pumpen i jämförelse med pumphjul av den öppna typen. Å andra sidan har slutna pumphjul en sârm-e genomför-ing, vilket innebär en högre risk för igensåttriing.During pumping where high lifting heights are required, e.g. in mines, closed impellers are often used, i.e. one with two cover discs, an upper and a lower as well as intermediate vanes because these types of wheels reduce the axial load on the pump compared to impellers of the open type. On the other hand, closed impellers have a narrow bushing, which means a higher risk of clogging.
Slutna pumphjul år vanligtvis konstruerade med frarnlcanter i det centrala inloppet så. att de år väsentligen raka sett i flödesriktningen. Man har ftmnit att det under användning, i synnerhet när vätskan innehåller relativt stora kvantiteter av avslipande föroreningar, förekommer avsevärt slitage på framkanterna hos skovlarna. Det ñnns vidare en risk att föroreningar såsom sockor, plastpåsar och andra lángsträckta objekt fastnar vid framkantema, varvid rengöring av pumpen därmed erfordras.Closed impellers are usually constructed with francers in the central inlet so. that they are essentially straight in the direction of fate. It has been found that during use, especially when the liquid contains relatively large quantities of abrasive contaminants, there is considerable wear on the leading edges of the vanes. There is also a risk that contaminants such as socks, plastic bags and other elongated objects get stuck at the front edges, thereby requiring cleaning of the pump.
KORT BESKRIVNING AV UPPFINNINGEN Syftet med föreliggande uppfinning är att avhjälpa de ovannämnda problemen och i synnerhet i samband med slutna pumphjul.BRIEF DESCRIPTION OF THE INVENTION The object of the present invention is to remedy the above-mentioned problems and in particular in connection with closed impellers.
Detta syfte löses enligt en huvudaspekt av föreliggande uppfinning enligt den kännetecknande delen av krav 1. Föredragna utföringsformer av uppfmningen bildar de beroende kraven. 527 558 Enligt en huvudaspekt av ßreliggande uppfinning kännetecknas den av ett pumphjul av centrifugaltyp eller halvaxiell typ för användning i en pump för att pumpa vätskor, varvid hjulet âr anordnat med en eller flera skovlar, vilka skovlar år fästa vid tåckskivor på vardera sida så att ett så kallat slutet hjul bildas, vilket känneteclmas av att fiamkanterna hos skovlarna är svepta bakåt vid inloppsöppningen vid en av tåckskivoma hos hjulet.This object is solved according to a main aspect of the present invention according to the characterizing part of claim 1. Preferred embodiments of the invention form the dependent claims. 527 558 According to a main aspect of the present invention, it is characterized by a centrifugal or semi-axial type impeller for use in a pump for pumping liquids, the wheel being arranged with one or two vanes, which vanes are attached to cover plates on each side so that a so-called closed wheels are formed, which is characterized in that the edges of the vanes are swept backwards at the inlet opening at one of the cover discs of the wheel.
Enligt ytterligare en aspekt av uppfinningen kännetecknas den av att framkantema samverkar med skârorgan vid ett centralt inlopp hos pumpen.According to a further aspect of the invention, it is characterized in that the leading edges cooperate with cutting means at a central inlet of the pump.
Företrâdesvis skjuter frarnkanterna ut något från inloppsöppningen och nämnda skârorgan utgör åtminstone en avsmalnande sektion av gapet mellan den centrala inloppsöppningen hos pumpen och framkanterna hos hjulet, varigenom en skärande effekt uppnås mellan dessa när framkanterna sveper förbi dessa sektioner under drift.Preferably, the leading edges project slightly from the inlet opening and said cutting means constitute at least a tapered section of the gap between the central inlet opening of the pump and the leading edges of the wheel, whereby a cutting effect is achieved between them as the leading edges sweep past these sections during operation.
Genom att utforma framkanterna hos skovlarna så att de år lcraftigt svepta bakåt har man funnit att slitaget på dessa kanter reduceras drastiskt. Denna konstruktion reducerar också risken ßr att material fastnar vid kanterna.By designing the front edges of the blades so that they are strongly swept backwards, it has been found that the wear on these edges is drastically reduced. This construction also reduces the risk of material sticking to the edges.
Istället matas sådant material mot periferin.Instead, such material is fed to the periphery.
Material som trots allt tenderar att fastna vid framkantema vid inloppsöppningen kommer att sönderdelas av nämnda skârorgan. I en föredragen utfóringsfonn samverkar framkanterna hos skovlarna med de avsmalnande delarna hos inloppsöppningen hos pumphöljet.Material which nevertheless tends to stick to the leading edges at the inlet opening will be disintegrated by said cutting means. In a preferred embodiment, the leading edges of the vanes interact with the tapered portions of the inlet port of the pump housing.
För en god prestanda med avseende på pumpfunktion och transport av material mot periferin, bör svepvinkeln a ligga i området 40- 60° och 527 558 svepningen på framkanterna kan allmänt följa krökningen hos en logaritmisk spiral.For good performance with respect to pump function and transport of material to the periphery, the sweep angle α should be in the range of 40-60 ° and the sweep on the leading edges can generally follow the curvature of a logarithmic spiral.
I helhet uppnås ett pumphjul med förbättrad prestanda och slitstyrka, vilket leder till långa operationscykler mellan underhåll och service.Overall, an impeller is achieved with improved performance and durability, leading to long operating cycles between maintenance and service.
Dessa och andra aspekter och fördelar med föreliggande uppfinningen kommer att framgå tydligt från följande detaljerade beskrivning och från ritningar-na.These and other aspects and advantages of the present invention will become apparent from the following detailed description and from the drawings.
KORT BESKRIVNING AV RITNINGARNA I följande detaljerade beskrivning av uppfinningen kommer hänvisning att göras till ritningarna på vilka Fig. 1 är ett axiellt tvärsnitt genom en pump enligt uppfinningen, Fig. 2a är en perspektiv vy från ovan av ett pumphjul innefattande föreliggande uppfinning, Fig. 2b är en vy motsvarande Fig. 2a underifrån, Fig. 3 år en vy underifrån av pumphjulet i Fig. 2, och Fig. 4 är en bottenskiva som kan monteras i en pump och som samverkar med pumphjulet enligt Fig. l.BRIEF DESCRIPTION OF THE DRAWINGS In the following detailed description of the invention, reference will be made to the drawings in which Fig. 1 is an axial cross-section through a pump according to the invention, Fig. 2a is a perspective view from above of an impeller embodying the present invention, Fig. 2b is a view corresponding to Fig. 2a from below, Fig. 3 is a bottom view of the impeller in Fig. 2, and Fig. 4 is a bottom plate which can be mounted in a pump and which cooperates with the impeller according to Fig. 1.
DETALJERAD BESRIVNING AV UPPFINNINGEN Fig. 1 visar ett pumphjul av den slutna typen monteradí en pump som innefattar en drivaxel 10 som år ansluten till en elektrisk motor (som inte 527 558 visas) för att driva pumpen. Vid den nedre är en av axeln är ett pumphjul 12 monterat, vilket innefattar övre 14 och undre 16 tâckskivor, skovlar 18 och bakre skovlar 19. De ovan nämnda komponenterna är monterade i ett pumphölje 20, vilket har en bottenvâgg 22, ett inlopp 24 och ett utlopp 26.DETAILED DESCRIPTION OF THE INVENTION Fig. 1 shows a closed-type impeller mounted in a pump comprising a drive shaft 10 connected to an electric motor (not shown 527 558) for driving the pump. At the lower one of the shaft is mounted an impeller 12, which comprises upper 14 and lower 16 cover plates, vanes 18 and rear vanes 19. The above-mentioned components are mounted in a pump housing 20, which has a bottom wall 22, an inlet 24 and an outlet 26.
Pumphjulet 12 är monterat på ett sådant sätt i pumphöljet så att det bildas en spalt 28 mellan periferiytan hos den undre tâokskivan 16 och en inre sidovägg hos pumphöljet 20, ett utrymme 29 mellan den undre skivan och bottenväggen såväl som en spalt 30 mellan en undre yta hos den undre täckskivan 16 och en övre yta hos bottenväggen 22.The impeller 12 is mounted in such a manner in the pump housing that a gap 28 is formed between the peripheral surface of the lower toe plate 16 and an inner side wall of the pump housing 20, a space 29 between the lower plate and the bottom wall as well as a gap 30 between a lower surface of the lower cover plate 16 and an upper surface of the bottom wall 22.
Enligt principerna för en centrifugalpump, sugs vätskan in axiellt genom inloppet 24 och lämnar pumpen genom utloppet 26 enligt flödespilama A, B och C.According to the principles of a centrifugal pump, the liquid is sucked in axially through the inlet 24 and leaves the pump through the outlet 26 according to the fate arrows A, B and C.
Enligt föreliggande uppfinning är skovlarna 18 konstruerade så att framkantema 40 är svepta kraftigt bakåt vid inloppsöppningen 42 hos pumphjulet, i förhållande tiH rotationsriktriingen R. Svepvinkeln kan öka från navet och utåt. Svepet hos framkantema kan vara definierat i enlighet med en logaritmisk spiral där svepvinkeln <1 år 11/2 - ß, där ß år vinkeln hos den logaritmiska spiralen. Företrädesvis bör svepvinkeln ligga i området 40 - 60°.According to the present invention, the vanes 18 are designed so that the leading edges 40 are swept sharply backwards at the inlet opening 42 of the impeller, in relation to the direction of rotation R. The sweeping angle can increase from the hub and outwards. The sweep of the leading edges may be the fi niered in accordance with a logarithmic spiral where the sweep angle <1 is 11/2 - ß, where ß is the angle of the logarithmic spiral. Preferably, the sweeping angle should be in the range of 40 - 60 °.
Vid inloppsöppningen hos hjulet år framkanterna anordnade väsentligen i ett plan som är vinkelrätt mot hjulets rotationsaxel 10. Fördelen med denna konstruktion är att det säkerställs att föroreningar glider mot periferin istället för att fastna vid kantema. Det har vidare visats sig att slitaget på framkanterna har reducerats då de har denna konfiguration istället för den konventionella konstruktionen. 527 558 Vidare skjuter frarnkanterna ut något från den centrala öppningen hos hjulet, Fig. l. Kantdelarna 44 hos skovlama som skjuter ut ovanför bottenytan hos den undre täckskivan 16 kan vara anordnade att samverka med kantdelen 46 hos det stationära ínloppet 24 hos höljet anordnat i en bottenplatta 22. Det cirkulåra ínloppet är således anordnat med två. mitt emot varandra anordnade räta delar 50, varigenom en spalt mellan skovlama och kantdelen hos ínloppet blir mycket liten. Långsträckta föroreningar såsom sockor, plastpåsar och liknande som tidigare fastnade vid framkanterna kommer att sönderdelas hår.At the inlet opening of the wheel, the leading edges are arranged substantially in a plane perpendicular to the axis of rotation 10 of the wheel. The advantage of this construction is that it is ensured that contaminants slide towards the periphery instead of sticking to the edges. It has further been found that the wear on the leading edges has been reduced as they have this configuration instead of the conventional construction. 527 558 Furthermore, the leading edges project slightly from the central opening of the wheel, Fig. 1. The edge parts 44 of the vanes projecting above the bottom surface of the lower cover plate 16 may be arranged to cooperate with the edge part 46 of the stationary inlet 24 of the housing arranged in a bottom plate 22. The circular inlet is thus arranged with two. opposite straight parts 50, whereby a gap between the vanes and the edge part of the inlet becomes very small. Elongated contaminants such as socks, plastic bags and the like that previously stuck to the front edges will break down hair.
I helhet reducerar konstruktionen av framkanterna där de är svepta och skjuter ut något och samverkar med öppningen hos bottenplattan avsevärt risken för att föroreningar fastnar och reducerar slitaget på framkanterna.On the whole, the construction of the leading edges where they are swept and protrude slightly and cooperates with the opening of the bottom plate considerably reduces the risk of contaminants getting stuck and reducing the wear on the leading edges.
Det inses att utföringsformen som har beskrivits ovan och som visas på. ritningarna skall anses vara ett icke-begränsande exempel på uppfinningen och att den kan modifieras inom ramen för patentkraven.It will be appreciated that the embodiment described above and shown in. the drawings are to be considered as a non-limiting example of the invention and may be modified within the scope of the claims.
Claims (7)
Priority Applications (26)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0402840A SE0402840L (en) | 2004-11-19 | 2004-11-19 | Impeller |
CNA2005800395749A CN101061319A (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
UAA200706529A UA89653C2 (en) | 2004-11-19 | 2005-11-03 | Pump impeller |
DK05801669T DK1815144T3 (en) | 2004-11-19 | 2005-11-03 | Impeller |
ZA200704866A ZA200704866B (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
PL05801669T PL1815144T3 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
PT05801669T PT1815144E (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
ES05801669T ES2304178T3 (en) | 2004-11-19 | 2005-11-03 | DRIVING WHEEL. |
NZ555389A NZ555389A (en) | 2004-11-19 | 2005-11-03 | Closed type impeller wheel with leading edges of vanes swept back |
KR1020077013863A KR20070086413A (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
CA002585171A CA2585171A1 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
AU2005305920A AU2005305920B2 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
US11/719,842 US20090208336A1 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
AP2007003998A AP2173A (en) | 2004-11-19 | 2005-11-03 | Impeller wheel. |
JP2007541908A JP4489119B2 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
SI200530263T SI1815144T1 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
EP05801669A EP1815144B8 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
DE602005005515T DE602005005515T2 (en) | 2004-11-19 | 2005-11-03 | WHEEL |
BRPI0518009-0A BRPI0518009A (en) | 2004-11-19 | 2005-11-03 | propeller wheel |
PCT/EP2005/055726 WO2006053831A1 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
MX2007005925A MX2007005925A (en) | 2004-11-19 | 2005-11-03 | Impeller wheel. |
AT05801669T ATE389809T1 (en) | 2004-11-19 | 2005-11-03 | WHEEL |
EA200701098A EA009906B1 (en) | 2004-11-19 | 2005-11-03 | Impeller wheel |
IL182816A IL182816A0 (en) | 2004-11-19 | 2007-04-26 | Impeller wheel |
NO20073096A NO20073096L (en) | 2004-11-19 | 2007-06-18 | impellers |
HK07112392A HK1106814A1 (en) | 2004-11-19 | 2007-11-13 | Impeller wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0402840A SE0402840L (en) | 2004-11-19 | 2004-11-19 | Impeller |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0402840D0 SE0402840D0 (en) | 2004-11-19 |
SE527558C2 true SE527558C2 (en) | 2006-04-11 |
SE0402840L SE0402840L (en) | 2006-04-11 |
Family
ID=33516498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0402840A SE0402840L (en) | 2004-11-19 | 2004-11-19 | Impeller |
Country Status (26)
Country | Link |
---|---|
US (1) | US20090208336A1 (en) |
EP (1) | EP1815144B8 (en) |
JP (1) | JP4489119B2 (en) |
KR (1) | KR20070086413A (en) |
CN (1) | CN101061319A (en) |
AP (1) | AP2173A (en) |
AT (1) | ATE389809T1 (en) |
AU (1) | AU2005305920B2 (en) |
BR (1) | BRPI0518009A (en) |
CA (1) | CA2585171A1 (en) |
DE (1) | DE602005005515T2 (en) |
DK (1) | DK1815144T3 (en) |
EA (1) | EA009906B1 (en) |
ES (1) | ES2304178T3 (en) |
HK (1) | HK1106814A1 (en) |
IL (1) | IL182816A0 (en) |
MX (1) | MX2007005925A (en) |
NO (1) | NO20073096L (en) |
NZ (1) | NZ555389A (en) |
PL (1) | PL1815144T3 (en) |
PT (1) | PT1815144E (en) |
SE (1) | SE0402840L (en) |
SI (1) | SI1815144T1 (en) |
UA (1) | UA89653C2 (en) |
WO (1) | WO2006053831A1 (en) |
ZA (1) | ZA200704866B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2935761B1 (en) * | 2008-09-05 | 2010-10-15 | Alstom Hydro France | FRANCIS TYPE WHEEL FOR A HYDRAULIC MACHINE, A HYDRAULIC MACHINE COMPRISING SUCH A WHEEL AND A METHOD OF ASSEMBLING SUCH A WHEEL |
DE102009011444A1 (en) * | 2009-03-03 | 2010-09-09 | Ksb Aktiengesellschaft | Free-flow impeller with cutting edges |
WO2013015432A1 (en) * | 2011-07-25 | 2013-01-31 | Kudou Yasushi | Fluid machine |
CA2915631C (en) | 2013-06-21 | 2020-06-02 | Flow Control Llc. | Debris removing impeller backvane |
JP6351216B2 (en) * | 2013-07-05 | 2018-07-04 | 株式会社荏原製作所 | Pump blade for submersible pump and submersible pump equipped with the same |
CN103696982A (en) * | 2013-12-06 | 2014-04-02 | 江苏大学 | Sewage axial-flow pump impeller structure capable of automatically cutting fibers |
JP6415116B2 (en) * | 2014-05-30 | 2018-10-31 | 株式会社荏原製作所 | Casing liner for sewage pump and sewage pump provided with the same |
KR20180079505A (en) * | 2016-12-30 | 2018-07-11 | 명화공업주식회사 | Waterpump impeller |
CN108916066A (en) * | 2018-07-13 | 2018-11-30 | 江苏大学 | A kind of environment protecting pump for conveying with particle and fiber |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2712412A (en) * | 1952-08-26 | 1955-07-05 | New Holland Machine Division O | Forage blower |
US3447475A (en) * | 1967-01-09 | 1969-06-03 | Albert Blum | Centrifugal pump |
US3958895A (en) * | 1975-02-07 | 1976-05-25 | Brisson Leonard L | Pump with shearing means |
DE2612910A1 (en) * | 1976-03-26 | 1977-09-29 | Albert Blum | SEWAGE PUMP |
CA1155712A (en) * | 1979-10-29 | 1983-10-25 | Rockwell International Corporation | Composite centrifugal impeller for slurry pumps |
SE466766B (en) * | 1989-04-27 | 1992-03-30 | Flygt Ab Itt | Centrifugal pump intended for pumping of liquids containing solid particles, for example, rags and other long-stretched objects |
US5438755A (en) * | 1993-11-17 | 1995-08-08 | Giberson; Melbourne F. | Method of making a monolithic shrouded impeller |
SE520416C2 (en) * | 1997-11-18 | 2003-07-08 | Flygt Ab Itt | Impeller |
SE512154C2 (en) * | 1997-11-18 | 2000-02-07 | Flygt Ab Itt | Impeller for centrifugal or semi-axial pumps intended to pump primarily wastewater |
WO2001025640A2 (en) * | 1999-10-06 | 2001-04-12 | Vaughan Co., Inc. | Centrifugal pump improvements |
US6276899B1 (en) * | 1999-11-05 | 2001-08-21 | Flowserve Management Company | Impeller manufacturing process |
JP4358965B2 (en) * | 2000-03-27 | 2009-11-04 | 株式会社日立産機システム | Centrifugal impeller and air purifier |
US20040136825A1 (en) * | 2001-08-08 | 2004-07-15 | Addie Graeme R. | Multiple diverter for reducing wear in a slurry pump |
US20040234370A1 (en) * | 2002-09-26 | 2004-11-25 | Mark Simakaski | Chopping pump impeller assembly |
EP1455094A1 (en) * | 2003-03-04 | 2004-09-08 | Ziehl-Abegg AG | Radial flow impeller |
-
2004
- 2004-11-19 SE SE0402840A patent/SE0402840L/en not_active IP Right Cessation
-
2005
- 2005-11-03 AP AP2007003998A patent/AP2173A/en active
- 2005-11-03 BR BRPI0518009-0A patent/BRPI0518009A/en not_active IP Right Cessation
- 2005-11-03 AU AU2005305920A patent/AU2005305920B2/en not_active Expired - Fee Related
- 2005-11-03 ZA ZA200704866A patent/ZA200704866B/en unknown
- 2005-11-03 JP JP2007541908A patent/JP4489119B2/en not_active Expired - Fee Related
- 2005-11-03 NZ NZ555389A patent/NZ555389A/en unknown
- 2005-11-03 CA CA002585171A patent/CA2585171A1/en not_active Abandoned
- 2005-11-03 US US11/719,842 patent/US20090208336A1/en not_active Abandoned
- 2005-11-03 WO PCT/EP2005/055726 patent/WO2006053831A1/en active Application Filing
- 2005-11-03 ES ES05801669T patent/ES2304178T3/en active Active
- 2005-11-03 EA EA200701098A patent/EA009906B1/en not_active IP Right Cessation
- 2005-11-03 AT AT05801669T patent/ATE389809T1/en active
- 2005-11-03 KR KR1020077013863A patent/KR20070086413A/en not_active Application Discontinuation
- 2005-11-03 PL PL05801669T patent/PL1815144T3/en unknown
- 2005-11-03 PT PT05801669T patent/PT1815144E/en unknown
- 2005-11-03 DK DK05801669T patent/DK1815144T3/en active
- 2005-11-03 UA UAA200706529A patent/UA89653C2/en unknown
- 2005-11-03 CN CNA2005800395749A patent/CN101061319A/en active Pending
- 2005-11-03 MX MX2007005925A patent/MX2007005925A/en active IP Right Grant
- 2005-11-03 EP EP05801669A patent/EP1815144B8/en active Active
- 2005-11-03 DE DE602005005515T patent/DE602005005515T2/en active Active
- 2005-11-03 SI SI200530263T patent/SI1815144T1/en unknown
-
2007
- 2007-04-26 IL IL182816A patent/IL182816A0/en unknown
- 2007-06-18 NO NO20073096A patent/NO20073096L/en not_active Application Discontinuation
- 2007-11-13 HK HK07112392A patent/HK1106814A1/en not_active IP Right Cessation
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2005305920B2 (en) | Impeller wheel | |
US20140112755A1 (en) | Pumps | |
CN100482948C (en) | Improved pump impeller | |
KR101148852B1 (en) | Centrifugal pump | |
KR101737420B1 (en) | Impeller for submerged pump | |
US8128360B2 (en) | Vortex pump with splitter blade impeller | |
US5102297A (en) | Centrifugal pump with cavitation reducing propeller | |
US20120014800A1 (en) | Fan assembly | |
SE520740C2 (en) | centrifugal | |
KR102138825B1 (en) | Spurt pump having blades with slope | |
KR101836455B1 (en) | a impeller for pump | |
JP2003074494A (en) | Turbo fan | |
US11339804B2 (en) | Self-cleaning pump | |
KR101898675B1 (en) | Impeller for spurt pump | |
JP2568209Y2 (en) | Pump with spiral wings | |
US4614478A (en) | Pump impeller | |
JP5300508B2 (en) | Pump impeller and pump | |
JPH0730751B2 (en) | pump | |
KR101722614B1 (en) | Pump equipped with impeller | |
JP6896595B2 (en) | Sewage pump | |
KR20200052018A (en) | Underwater pump having double wearing structure for preventing trapping of sludge | |
JP6861623B2 (en) | Impeller and pump equipped with it | |
KR102316724B1 (en) | Centrifugal pump | |
US2281733A (en) | Gravel pump | |
JPH0641757B2 (en) | Drainage pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |