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EP1703135B1 - Can of a centrifugal motor pump - Google Patents

Can of a centrifugal motor pump Download PDF

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Publication number
EP1703135B1
EP1703135B1 EP06000979A EP06000979A EP1703135B1 EP 1703135 B1 EP1703135 B1 EP 1703135B1 EP 06000979 A EP06000979 A EP 06000979A EP 06000979 A EP06000979 A EP 06000979A EP 1703135 B1 EP1703135 B1 EP 1703135B1
Authority
EP
European Patent Office
Prior art keywords
pump
sleeve
outside
bearing
end shield
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.)
Expired - Lifetime
Application number
EP06000979A
Other languages
German (de)
French (fr)
Other versions
EP1703135A3 (en
EP1703135A2 (en
Inventor
Thomas Materne
Hendrik Sura
Holger Krasmann
Günter Strelow
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.)
Wilo SE
Original Assignee
Wilo SE
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 Wilo SE filed Critical Wilo SE
Publication of EP1703135A2 publication Critical patent/EP1703135A2/en
Publication of EP1703135A3 publication Critical patent/EP1703135A3/en
Application granted granted Critical
Publication of EP1703135B1 publication Critical patent/EP1703135B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0633—Details of the bearings

Definitions

  • the invention relates to a can of a centrifugal pump with a tube open at both ends and a pump-side integrally formed flange shield which separates the motor stator from the pump chamber.
  • the object of the invention is to improve a split tube of a centrifugal pump of the type mentioned above so that with simple construction few items and a low installation costs are required and this high manufacturing accuracy is achieved.
  • a bush-shaped bearing seat (14) is formed, which carries a bearing for the motor shaft.
  • the integral nature of the split tube and the pump-side bearing seat reduces the number of parts and increases the manufacturing accuracy, since the alignment between the flange centering and bearing point is significantly improved. Further Seals are saved and the assembly effort is reduced.
  • the split tube made of plastic.
  • the stability of the can is increased when outside of the canned a stiffening tube is seated in particular made of carbon fiber reinforced plastic. This achieves modularity, i. In low-loaded systems, the stiffening tube may be missing and pushed at high load.
  • the outer side of the bearing plate a sleeve coaxially formed on the pump side, which protrudes toward the pump.
  • the inner diameter of the beech is greater than the outer diameter of the bearing seat.
  • Particularly advantageous such a construction can be used if between the bush and the bearing seat an annular space, in which at least one particular annular filter element is seated.
  • annular cover in particular made of plastic coaxial, which covers the bearing plate outside in the pump chamber at least partially.
  • a centrifugal motor pump has an electric drive motor with arranged in a motor housing 2 stator 3 and a seated on a shaft 4 rotor 5. Between stator 3 and rotor 5 coaxially seated a can 6, in its end facing away from the pump, a first bearing seat 7 for a bearing 8 of the shaft 4 is fixed.
  • a flange-shaped bearing plate 9 made of plastic is formed on the pump side, which separates the motor stator chamber 10 from the pump chamber 11.
  • the rotor 12 of the pump is mounted on the end of the shaft 4.
  • the bearing plate 9 of the can 6 is in the embodiments of the FIGS. 1 to 3 placed in the manner that seen from the pump side, the outer surface of the bearing plate 9 is concave shaped.
  • a bushing 13 made of plastic coaxially molded so that it protrudes toward the rotor 12.
  • a further bush is formed as a bearing seat 14 made of plastic on the can 6, wherein the outer diameter of the bearing seat 14 is smaller than the inner diameter of the can 6 and the bearing seat 14 projects with a range in the can 6.
  • This coaxially arranged bearing seat 14 carries the second bearing 15, which faces the pump.
  • a large annular space 16 which is covered on the side facing the rotor by a filter element 17. Since passages 18 are arranged between the bearing seat 14 and the can 6, this can be achieved by the filter element 17 passing through conveying medium into the interior of the can 6 pass. In the annulus dirt particles can settle.
  • FIG. 2 The construction after FIG. 2 is different from the after FIG. 1 in that a stiffening tube 19 is fastened on the outside of the can 6 in order to reinforce the can 6.
  • This stiffening tube 19 is preferably made of carbon fiber reinforced plastic and its grip on the split tube is additionally ensured by the fact that the Spaltrohrau togeometrie is shaped accordingly.
  • FIG. 3 differs according to the of FIG. 1 in that the bush 13 is surrounded on the outside by an annular cover element 20, which preferably consists of plastic and is not formed on the can, or on the bearing plate 9, but is attached to this form-fitting, non-positive or by gluing, or screws.
  • an annular cover element 20 which preferably consists of plastic and is not formed on the can, or on the bearing plate 9, but is attached to this form-fitting, non-positive or by gluing, or screws.
  • FIG. 4 The construction after FIG. 4 is different from the after FIG. 1 in that, viewed from the pump side, the conical bearing shield is convex, so that an additional cover element 20 is unnecessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The can has a pipe opened at both ends and a flange shaped bearing plate (9) formed at a pump side. The plate separates a motor stator space from a pump chamber (11). A sleeve shaped bearing seat (14) is formed at the plate height coaxially to the can, where the seat carries a bearing (15) for a motor shaft (5). A reinforcement pipe is mounted external to the can, in which the seat and the can are integrated to form one piece.

Description

Die Erfindung betrifft ein Spaltrohr einer Kreiselpumpe mit einem an beiden Enden offenem Rohr und einem pumpenseitig angeformten flanschförmigen Lagerschild, das den Motorstatorraum von der Pumpenkammer trennt.The invention relates to a can of a centrifugal pump with a tube open at both ends and a pump-side integrally formed flange shield which separates the motor stator from the pump chamber.

Bei einem Spaltrohr für eine Kreiselmotorpumpe ist es bekannt, die für die Motorenwelle erforderlichen Lagerträger als zusätzliche Teile im Spaltrohr zu befestigen. Dies erfordert einen zusätzlichen Montageaufwand mit einer hohen Herstellgenauigkeit und zusätzliche Dichtungen. Ein solcher gattungsgemäßer Spaltrohr ist z.B. aus DE 88 11 420 U1 bekannt.In a split tube for a centrifugal motor pump, it is known to fasten the bearing carrier required for the motor shaft as additional parts in the can. This requires an additional installation effort with a high manufacturing accuracy and additional seals. Such a generic canned example is made DE 88 11 420 U1 known.

Aufgabe der Erfindung ist es ein Spaltrohr einer Kreiselpumpe der Eingangs genannten Art so zu verbessern, dass bei einfacher Konstruktion wenig Einzelteile und ein geringer Montageaufwand erforderlich sind und hierbei eine hohe Herstellgenauigkeit erreicht wird.The object of the invention is to improve a split tube of a centrifugal pump of the type mentioned above so that with simple construction few items and a low installation costs are required and this high manufacturing accuracy is achieved.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass pumpenseitig in Höhe des Lagerschildes koaxial am Spaltrohr ein buchsenförmiger Lagersitz (14) angeformt ist, der ein Lager für die Motorenwelle trägt.This object is achieved in that the pump side in the amount of the bearing plate coaxial with the can, a bush-shaped bearing seat (14) is formed, which carries a bearing for the motor shaft.

Die Einstückigkeit von Spaltrohr und dem pumpenseitigen Lagersitz verringert die Anzahl der Einzelteile und erhöht die Herstellgenauigkeit, da die Fluchtung zwischen Flanschzentrierung und Lagerstelle erheblich verbessert ist. Ferner werden Dichtungen eingespart und der Montageaufwand verringert. Vorzugsweise besteht hierbei das Spaltrohr aus Kunststoff.The integral nature of the split tube and the pump-side bearing seat reduces the number of parts and increases the manufacturing accuracy, since the alignment between the flange centering and bearing point is significantly improved. Further Seals are saved and the assembly effort is reduced. Preferably, in this case, the split tube made of plastic.

Die Stabilität des Spaltrohres wird erhöht, wenn außen auf dem Spaltrohr ein Versteifungsrohr insbesondere aus Kohlefaserverstärktem Kunststoff aufsitzt. Hierdurch wird eine Modularität erreicht, d.h. bei niedrig belasteten Systemen kann das Versteifungsrohr fehlen und bei hoher Belastung aufgeschoben werden.The stability of the can is increased when outside of the canned a stiffening tube is seated in particular made of carbon fiber reinforced plastic. This achieves modularity, i. In low-loaded systems, the stiffening tube may be missing and pushed at high load.

Besonders vorteilhaft ist es, wenn außen am Lagerschild pumpenseitig eine Buchse koaxial angeformt ist, die zur Pumpe hin vorsteht. Hierbei ist der Innendurchmesser der Buche größer als der Außendurchmesser des Lagersitzes. Besonderes vorteilhaft ist eine solche Konstruktion verwendbar, wenn zwischen der Buchse und dem Lagersitz ein Ringraum besteht, in dem mindestens ein insbesondere ringförmiges Filterelement einsitzt.It is particularly advantageous if the outer side of the bearing plate, a sleeve coaxially formed on the pump side, which protrudes toward the pump. Here, the inner diameter of the beech is greater than the outer diameter of the bearing seat. Particularly advantageous such a construction can be used if between the bush and the bearing seat an annular space, in which at least one particular annular filter element is seated.

Eine besonders gute Strömungsführung in der Pumpenkammer und damit geringe Verwirbelungen werden erreicht, wenn außen an der Buchse ein ringförmiges Abdeckelement insbesondere aus Kunststoff koaxial befestigt ist, das das Lagerschild außen in der Pumpenkammer zumindest teilweise überdeckt.A particularly good flow guidance in the pump chamber and thus low turbulence are achieved when externally attached to the sleeve, an annular cover, in particular made of plastic coaxial, which covers the bearing plate outside in the pump chamber at least partially.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen in axialen Schnitten dargestellt und werden im folgenden näher beschrieben, wobei das Pumpengehäuse weggelassen wurde. Es zeigen

Figur 1
ein Spaltrohr ohne äußere Verstärkungen und mit konusförmig gestelltem Lagerschild, wobei das Lagerschild von der Pumpenseite her gesehen konkav geformt ist;
Figur 2
die Konstruktion nach Figur 1 mit einem auf dem Spaltrohr außen aufsitzendem Versteifungsrohr;
Figur 3
die Konstruktion nach Figur 1 mit außen auf dem Lagerschild angeordnetem Abdeckelement;
Figur 4
die Konstruktion nach Figur 1 mit einem konusförmig gestelltem Lagerschild, wobei von der Pumpenseite her gesehen das Lagerschild konvex geformt ist.
Embodiments of the invention are illustrated in the drawings in axial sections and will be described in more detail below, wherein the pump housing has been omitted. Show it
FIG. 1
a split tube without external reinforcements and cone-shaped bearing plate, the bearing plate is concave shaped seen from the pump side;
FIG. 2
the construction after FIG. 1 with a stiffening tube seated on the outside of the can;
FIG. 3
the construction after FIG. 1 with outside arranged on the bearing plate cover;
FIG. 4
the construction after FIG. 1 with a konusförmig Asked end plate, which seen from the pump side, the bearing plate is convex.

Eine Kreiselmotorpumpe weist einen Elektroantriebsmotor auf mit in einem Motorengehäuse 2 angeordnetem Stator 3 und einem auf einer Welle 4 sitzendem Rotor 5. Zwischen Stator 3 und Rotor 5 sitzt koaxial ein Spaltrohr 6, in dessen von der Pumpe abgewandtem Ende ein erster Lagersitz 7 für ein Lager 8 der Welle 4 befestigt ist.A centrifugal motor pump has an electric drive motor with arranged in a motor housing 2 stator 3 and a seated on a shaft 4 rotor 5. Between stator 3 and rotor 5 coaxially seated a can 6, in its end facing away from the pump, a first bearing seat 7 for a bearing 8 of the shaft 4 is fixed.

Am Spaltrohr 6 aus Kunststoff ist pumpenseitig ein flanschförmiges Lagerschild 9 aus Kunststoff angeformt, das den Motorstatorraum 10 von der Pumpenkammer 11 trennt. In der Pumpenkammer 11 ist der Läufer 12 der Pumpe auf dem Ende der Welle 4 befestigt.On plastic sleeve 6, a flange-shaped bearing plate 9 made of plastic is formed on the pump side, which separates the motor stator chamber 10 from the pump chamber 11. In the pump chamber 11, the rotor 12 of the pump is mounted on the end of the shaft 4.

Das Lagerschild 9 des Spaltrohres 6 ist in den Ausführungsbeispielen nach den Figuren 1 bis 3 konusförmig in der Weise gestellt, dass von der Pumpenseite her gesehen die Außenfläche des Lagerschildes 9 konkav geformt ist. An der Außenfläche des Lagerschildes 9 ist eine Buchse 13 aus Kunststoff koaxial angeformt, so dass diese zum Läufer 12 hin vorsteht. Innerhalb der Buchse 13 ist eine weitere Buchse als Lagersitz 14 aus Kunststoff am Spaltrohr 6 angeformt, wobei der Außendurchmesser des Lagersitzes 14 kleiner ist als der Innendurchmesser des Spaltrohres 6 und der Lagersitz 14 mit einem Bereich in das Spaltrohr 6 hineinragt. Dieser koaxial angeordnete Lagersitz 14 trägt das zweite Lager 15, das der Pumpe zugewandt ist.The bearing plate 9 of the can 6 is in the embodiments of the FIGS. 1 to 3 placed in the manner that seen from the pump side, the outer surface of the bearing plate 9 is concave shaped. On the outer surface of the bearing plate 9, a bushing 13 made of plastic coaxially molded so that it protrudes toward the rotor 12. Inside the bush 13, a further bush is formed as a bearing seat 14 made of plastic on the can 6, wherein the outer diameter of the bearing seat 14 is smaller than the inner diameter of the can 6 and the bearing seat 14 projects with a range in the can 6. This coaxially arranged bearing seat 14 carries the second bearing 15, which faces the pump.

Zwischen dem Lagersitz 14 und der Buchse 13 befindet sich ein großer Ringraum 16, der auf der dem Läufer zugewandten Seite durch ein Filterelement 17 abgedeckt ist. Da zwischen dem Lagersitz 14 und dem Spaltrohr 6 Durchlässe 18 angeordnet sind, kann das durch das Filterelement 17 hindurchtretende Fördermedium in das Innere des Spaltrohres 6 gelangen. In dem Ringraum können sich Schmutzpartikel absetzen.Between the bearing seat 14 and the bushing 13 is a large annular space 16, which is covered on the side facing the rotor by a filter element 17. Since passages 18 are arranged between the bearing seat 14 and the can 6, this can be achieved by the filter element 17 passing through conveying medium into the interior of the can 6 pass. In the annulus dirt particles can settle.

Die Konstruktion nach Figur 2 unterscheidet sich von der nach Figur 1 dadurch, dass außen auf dem Spaltrohr 6 ein Versteifungsrohr 19 befestigt ist um das Spaltrohr 6 zu verstärken. Dieses Versteifungsrohr 19 besteht vorzugsweise aus Kohlefaserverstärktem Kunststoff und sein Halt am Spaltrohr ist noch zusätzlich dadurch gesichert, dass die Spaltrohraußengeometrie entsprechend geformt ist.The construction after FIG. 2 is different from the after FIG. 1 in that a stiffening tube 19 is fastened on the outside of the can 6 in order to reinforce the can 6. This stiffening tube 19 is preferably made of carbon fiber reinforced plastic and its grip on the split tube is additionally ensured by the fact that the Spaltrohraußengeometrie is shaped accordingly.

Die Konstruktion nach Figur 3 unterscheidet sich nach der von Figur 1 dadurch, dass die Buchse 13 außen von einem ringförmigen Abdeckelement 20 umgeben ist, das vorzugsweise aus Kunststoff besteht und nicht am Spaltrohr, bzw. an dem Lagerschild 9 angeformt ist, sondern an diesem formschlüssig, kraftschlüssig oder durch Kleben, bzw. Schrauben befestigt wird. Hierdurch wird die Strömungsführung der in der Pumpenkammer 11 befindlichen Flüssigkeit verbessert und insbesondere werden Verwirbelungen verringert.The construction after FIG. 3 differs according to the of FIG. 1 in that the bush 13 is surrounded on the outside by an annular cover element 20, which preferably consists of plastic and is not formed on the can, or on the bearing plate 9, but is attached to this form-fitting, non-positive or by gluing, or screws. As a result, the flow guidance of the liquid located in the pump chamber 11 is improved and, in particular, turbulences are reduced.

Die Konstruktion nach Figur 4 unterscheidet sich von der nach Figur 1 dadurch, dass das konusförmige Lagerschild von der Pumpenseite her gesehen konvex geformt ist, so dass sich ein zusätzliches Abdeckelement 20 erübrigt.The construction after FIG. 4 is different from the after FIG. 1 in that, viewed from the pump side, the conical bearing shield is convex, so that an additional cover element 20 is unnecessary.

Claims (7)

  1. Can (6) of a centrifugal pump comprising a tube open at both ends and a flange-like end shield (9) integrally formed at the end adjacent the pump, which end shield (9) separates the stator chamber (10) of the motor from the pump chamber (11), characterised in that, at the end adjacent the pump, a bearing mounting (14) in the form of a sleeve, which carries a bearing (15) for the motor shaft, is integrally formed on the can (6), co-axially therewith, at the point where the end shield (9) is situated.
  2. Can according to claim 1, characterised in that the can (6) is composed of plastics material.
  3. Can according to claim 1 or 2, characterised in that a stiffening tube (19), in particular of carbon-fibre reinforced plastics material, is mounted on the outside of the can (6).
  4. Can according to claim 1 or 2, characterised in that, at the end adjacent the pump, a sleeve (13) which projects towards the pump is integrally formed on the outside of the end shield (9), co-axially therewith.
  5. Can according to claim 4, characterised in that the inside diameter of the sleeve (13) is larger than the outside diameter of the bearing mounting (14).
  6. Can according to claim 4 or 5, characterised in that, between the sleeve (13) and the bearing mounting (14), there is an annular space (16) in which is inserted at least one filter element (17) which is, in particular, annular.
  7. Can according to one of claims 4 to 6, characterised in that an annular cover member (20), in particular of plastics material, which, on the outside in the pump chamber (11), covers at least part of the end shield (9), is fastened to the outside of the sleeve (13), co-axially thereto.
EP06000979A 2005-02-25 2006-02-01 Can of a centrifugal motor pump Expired - Lifetime EP1703135B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005009260A DE102005009260A1 (en) 2005-02-25 2005-02-25 Centrifugal power pump`s can, has sleeve shaped bearing seat formed at bearing plate height coaxially to pump can, where seat carries bearing for motor shaft and seat and can are integrated to form one piece

Publications (3)

Publication Number Publication Date
EP1703135A2 EP1703135A2 (en) 2006-09-20
EP1703135A3 EP1703135A3 (en) 2010-04-07
EP1703135B1 true EP1703135B1 (en) 2011-06-29

Family

ID=36440917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06000979A Expired - Lifetime EP1703135B1 (en) 2005-02-25 2006-02-01 Can of a centrifugal motor pump

Country Status (3)

Country Link
EP (1) EP1703135B1 (en)
AT (1) ATE514861T1 (en)
DE (1) DE102005009260A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4624752A1 (en) * 2024-03-26 2025-10-01 Anhui Shinhoo Canned Motor Pump Co., Ltd. A pump with an internal circulation filtering protection module

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Publication number Priority date Publication date Assignee Title
DE102007010051A1 (en) * 2007-03-01 2008-09-04 Continental Automotive Gmbh Centrifugal pump has spiral housing with two housing parts, where one housing part is formed in pipe shape and limited on its area opposite to access of inflowing medium for receiving rotor in its interior in wet chamber
DE502007005014D1 (en) 2007-09-21 2010-10-21 Grundfos Management As Canned tube of a drive motor for a pump set
ATE509417T1 (en) † 2007-09-21 2011-05-15 Grundfos Management As SPLIT TUBE AND METHOD FOR PRODUCING A SPLIT TUBE
DE102011121149A1 (en) * 2011-12-15 2013-06-20 Wilo Se Wet runner pump with prechamber
DE102013004339A1 (en) * 2013-03-14 2014-09-18 Wilo Se Pump unit with a one-piece bearing unit
DE102013007624A1 (en) * 2013-05-02 2014-11-06 Wilo Se Motor centrifugal pump with a bearing carrier
DE102014008971A1 (en) * 2014-06-23 2015-12-24 Wilo Se Wet rotor motor pump
DE102020107584A1 (en) 2020-03-19 2021-09-23 KSB SE & Co. KGaA Centrifugal pump with canned motor

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US2128544A (en) * 1936-10-14 1938-08-30 Surjaninoff Michael Electric motor
US3053189A (en) * 1959-12-22 1962-09-11 Fostoria Corp Motor driven pumps
DE6915511U (en) * 1969-04-18 1969-07-31 Bauknecht Gmbh G CANNED MOTOR
GB1398364A (en) * 1972-09-14 1975-06-18 Eheim G Motor and pump combination
DE3706787A1 (en) * 1987-03-03 1988-09-15 Richard Halm ELECTRIC MOTOR, IN PARTICULAR CANOPY MOTOR
DE8811420U1 (en) * 1988-09-09 1989-01-19 Halm, Richard, 7066 Baltmannsweiler Wet rotor motor
DE19845864A1 (en) * 1998-10-05 2000-04-06 Wilo Gmbh Canned motor
DE10000431A1 (en) * 2000-01-10 2001-07-12 Wilo Gmbh Electronics cooling through canned lid
DE10103209A1 (en) * 2001-01-24 2002-07-25 Wilo Gmbh Electric centrifugal pump has one-piece motor housing forming slotted pot and bearing plate on opening side covering wheel chamber, accommodation chamber for electrical/electronic parts
DE10320703B4 (en) * 2003-05-08 2006-06-29 Siemens Ag Sealing device for electrical machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4624752A1 (en) * 2024-03-26 2025-10-01 Anhui Shinhoo Canned Motor Pump Co., Ltd. A pump with an internal circulation filtering protection module

Also Published As

Publication number Publication date
EP1703135A3 (en) 2010-04-07
EP1703135A2 (en) 2006-09-20
ATE514861T1 (en) 2011-07-15
DE102005009260A1 (en) 2006-08-31

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