EP2929191B1 - Pompe centrifuge, en particulier pour eaux usées ou eaux grasses - Google Patents

Pompe centrifuge, en particulier pour eaux usées ou eaux grasses Download PDF

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Publication number
EP2929191B1
EP2929191B1 EP13805772.4A EP13805772A EP2929191B1 EP 2929191 B1 EP2929191 B1 EP 2929191B1 EP 13805772 A EP13805772 A EP 13805772A EP 2929191 B1 EP2929191 B1 EP 2929191B1
Authority
EP
European Patent Office
Prior art keywords
base plate
impeller
rotary pump
pump according
intake opening
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.)
Active
Application number
EP13805772.4A
Other languages
German (de)
English (en)
Other versions
EP2929191A1 (fr
Inventor
Holger Stark
Alfred J. Otto
Wolfgang Geier
Bernd Kretschmer
Wolfgang Strössner
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
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Filing date
Publication date
Application filed by Wilo SE filed Critical Wilo SE
Publication of EP2929191A1 publication Critical patent/EP2929191A1/fr
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Publication of EP2929191B1 publication Critical patent/EP2929191B1/fr
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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/466—Fluid-guiding means, e.g. diffusers adjustable especially adapted for liquid fluid pumps
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0033—By-passing by increasing clearance between impeller and its casing
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/622—Adjusting the clearances between rotary and stationary parts
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • 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

Definitions

  • the invention relates to a centrifugal pump, in particular a sewage or waste water motor pump with an impeller, the end face of which faces the pump suction opening is open and only the impeller end face facing away from the suction opening is covered by a circular coaxial support disk, to which the curved blades are attached, in particular, being molded on.
  • Wastewater often contains coarse solids such as long-fiber admixtures that can clog a centrifugal pump.
  • coarse solids such as long-fiber admixtures that can clog a centrifugal pump.
  • the efficiency of such a low-clogging centrifugal pump is significantly reduced as a result.
  • the object of the invention is to improve a centrifugal pump of the type mentioned at the outset in such a way that, with high pump efficiency, there is a high level of operational safety and a low risk of clogging.
  • the base plate which has the suction opening and faces the impeller, or at least one segment thereof, is movably adjustable and / or deformable and / or movably supported against spring pressure such that its distance from the impeller and thus from the impeller blades Changes, whereby a construction with optimal mobility and adaptability to the degree of contamination is given when the base plate has a first region immovable or movably mounted on the pump housing and at least one second region movably and / or deformably supported on the first region and / or on the housing wall against spring pressure , Has plate-shaped area in the form of a segment, the movable second area being held by at least one screw with limited mobility on the fixed area and / or on the housing wall.
  • Such a construction automatically adjusts the distance between the impeller and base plate to the degree of contamination and the size of the conveyed solids and / or can be optimally adjusted by adjusting accordingly.
  • the base plate or the segment (s) of the base plate is / are mounted on the pump housing by at least one set screw.
  • a particularly simple and stable construction is provided if the set screw (s) penetrates the base plate and lies with its head in a bore extension that opens towards the impeller.
  • the set screw (s) be surrounded by a helical compression spring which generates the spring pressure on the base plate.
  • the distance between the blades and the base plate increases from the blade leading edge to the blade leading edge. It is advantageous if the distance between the blades and the base plate is 0.5 to 2 mm.
  • the impeller preferably has two curved blades.
  • An advantageous embodiment consists in that the base plate is trough-shaped, in particular concave, on its side facing the impeller, and the height of the blades decreases towards the outside in accordance with the base plate curvature.
  • a low-vibration rectilinear input flow is achieved if the suction opening has groove-shaped flow channels in its inner wall, which are preferably arranged parallel to the main flow direction in the suction opening. It is preferably proposed here that the inner wall of the suction opening is cylindrical and the flow channels are arranged axially parallel to the axis of the inner wall of the cylinder.
  • the side wall that is last passed by a blade forms an inclined surface that widens the groove towards the outside.
  • the centrifugal pump according to the invention is particularly suitable for pumping wastewater and dirty water that contains solid particles. It is preferably part of a submersible water pump.
  • the pump impeller 1 is driven by the shaft of an electric motor, not shown, and is seated in a pump chamber which lies between a base plate 7 which forms the coaxial suction opening 8 and a partition wall which separates the electric motor from the pump chamber.
  • the impeller 1 made of plastic or metal sucks in the pumping medium via the suction opening 8 and conveys it radially to the spiral channel 14, which is formed by the pump housing 13, surrounds the impeller and opens into the pump pressure connection.
  • the base plate 7 is trough-shaped, in particular concave, on its side facing the impeller 1 and the height of the blades 3, 4 decreases outwards in accordance with the base plate curvature.
  • the impeller 1 is a semi-open impeller, i. H. it has a circular support disk (cover disk) 2 on the side facing the partition 13 and has no front cover disk.
  • the support disk On the surface facing the suction opening 8, the support disk carries two blades 3, 4 which are curved (in particular C-shaped), the concave surface of each blade 3, 4 facing the impeller axis.
  • one, three or more blades can also be attached, in particular molded, to the support disk 2.
  • the approximately C-shaped blades 3, 4 extend from the inside out to the edge of the impeller 1, the generatrix of the blade extending parallel or obliquely to the pump axis and thus to the impeller axis, so that each blade is perpendicular or oblique to the flat rear surface 2a of the support plate 2 is on the front side of the support plate 2b which rises to the center of the plate.
  • the free front edge of each blade 3, 4 forms an elongated thickening 12, which in the exemplary embodiment Fig. 1 extends as a profile along the front edge, the profile having a triangular, polygonal or polygonal cross section with an inclined longitudinal surface facing the inner surface 7c of the base plate 7, which runs as a bevel 6 parallel to the surface 7c.
  • the distance between the longitudinal surface / chamfer 6 and the surface 7ca is preferably 0.5 to 2 mm.
  • the distance between the blades 3, 4 and the base plate 7 can increase from the blade leading edge to the blade leading edge.
  • the elongated thickening 12 is not formed by a profile with a cross-section that remains the same over the length, but the thickening 12 is either only partially profile-shaped, in particular in sections, or its cross-section increases or decreases in size from one end to the other.
  • the largest cross section of the elongated thickening 12 is always greater than the width or thickness D of the blade 3, 4.
  • the thickening 12 projects on both or at least on one side of the blade.
  • each blade 3, 4 which forms the leading edge of the blade, carries an elongated, in particular molded, thickening 9, which runs along the inner blade end 9a and in Fig. 2
  • the embodiment shown is parallel to the impeller axis.
  • at least one of the thickenings can also be arranged obliquely and thus at an acute angle to the impeller axis.
  • both thickenings 9 are formed by profiles with a circular cross section.
  • the profiles can also have differently shaped cross sections, in particular oval or elliptical ones.
  • the cross section can change in shape and / or size, in particular sections, over its length.
  • these are preferably formed from the material of the blade and thus from the same plastic or metal of the blade and are preferably molded on.
  • the distance between the base plate 7 and the blades 3, 4 is adjustable, so that the pump can be adapted to the various admixtures in the waste water or dirty water. Either the height of the entire base plate is adjustable, or at least the area over which the blades pass. The adjustment takes place z. B. by thread, screws 16 or wedge surfaces by hand, in particular with tools, or motor, hydraulic or pneumatic, in particular computer-controlled and / or remote-controlled.
  • the base plate 7 is attached to the pump housing 13 by means of set screws 16 which are arranged on the outer edge of the base plate, so that the distance of the base plate 7 from the impeller 1 can be adjusted from the outside.
  • the base plate 7 lies within the pump housing 13, so that it is covered on the outside by the housing wall 13a.
  • the base plate 7 has a central opening 7d, which is aligned with the suction opening 8 of the housing wall.
  • the inner base plate 7 is supported by at least one, preferably three or four screws 16 on the housing wall, which surrounds the suction opening 8.
  • Each screw 16 lies in a bore 17 in the base plate 7.
  • the bore 17 has an extension 18 which opens towards the impeller and in which the screw head 21 lies.
  • An extension 19 opening towards the base plate also has the threaded hole in the housing wall, in which extension 19 there is a helical compression spring 20 which rests on the underside of the base plate 7 in order to press the base plate in the direction of the impeller 1. Since there is a distance of several millimeters between the underside of the base plate 7 and the inside of the housing wall, the base plate can be downward (in Fig. 6 ) dodge if a larger solid part gets between the base plate and the outer blade edges of the impeller.
  • Fig. 7 differs from that after Fig. 6 in that the bottom plate mounted on the inside has a first region 7a which is mounted immovably or movably on the pump housing, on which a second, in particular segment-shaped region 7b is movably supported against spring pressure and / or is held movably by means of elastic deformability of the component.
  • the head 21 of the screw (s) lies in a bore extension 18 of the second plate-shaped, in particular segment-shaped region 7b, so that at least the second region or segment 7b can move away from the impeller 1 against the pressure of the spring 20 and / or deforms when larger solid particles get between the impeller blades and the plate-shaped segment 7b.
  • the bottom plate 7 has, as in Fig. 3 shown, three in particular C-shaped grooves 10 which extend from the suction opening 8 and extend to the outer edge of the base plate 7 and are curved opposite to the curvature of the blades 3, 4.
  • the grooves 10 support the conveying of the solids radially outwards, so that a self-cleaning effect occurs.
  • the conveying to the outside is further enhanced by the fact that of the two side walls of the grooves 10, the side wall that is last passed over by a blade 3, 4 forms an inclined surface 15 that leads the groove outwards extended (see Fig. 4 ).
  • the inclined surface 15 forms an angle ⁇ of 110 to 160 degrees with the surface of the base plate 7.
  • one, two, four or more grooves can also be made in the base plate.
  • the preferably cylindrical suction opening 8 has groove-shaped flow channels 11 in its inner wall, which are preferably arranged parallel to the main flow direction in the suction opening, so that the solids in the wastewater or dirty water are repelled to the impeller and the risk of clogging is reduced.
  • the groove-shaped flow channels 11 are distributed at equal angular intervals over the inner wall of the suction opening.
  • six flow channels 11 are shown. The number can also be smaller (3 to 5) or larger (7 to 12).

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

Claims (11)

  1. Pompe centrifuge, plus particulièrement une motopompe submersible pour eaux usées, avec un rotor (1), dont la face orientée vers l'ouverture d'aspiration de la pompe est ouverte et la face non orientée vers l'ouverture d'aspiration (8) est seule recouverte d'un disque porteur de rotor coaxial circulaire (2), sur laquelle sont fixées, en particulier moulées, des pales de rotor incurvées (3, 4), caractérisée en ce que une embase (7) orientée vers le rotor (1) recevant l'ouverture d'aspiration (8) présente, sur le carter de pompe (13), une première zone (7a) montée de manière mobile ou immobile et au moins une seconde zone (7b) en plaque en forme de segment (7b) montée de manière mobile contre une pression de ressort et/ou déformable sur la première zone (7a) et/ou sur la paroi du carter telles que son écartement, ou du moins l'écartement entre le ou les segments (7b) et le rotor (1) et donc les lames du rotor (3, 4) peut être modifié, sachant que la mobilité de la seconde zone mobile (7b) par rapport à la première zone (7a) et/ou la paroi du carter est limitée par une vis (16).
  2. Pompe centrifuge selon la revendication 1, caractérisée en ce que l'embase (7) peut être réglée de manière mobile et/ou est déformable.
  3. Pompe centrifuge selon la revendication 1 ou 2, caractérisée en ce que l'embase (7) ou le ou les segments (7a) de l'embase sont fixés par au moins une vis de réglage (16) au carter de pompe (13).
  4. Pompe centrifuge selon la revendication 3, caractérisée en ce que la ou les vis de réglages vissées dans le carter de pompe (16) traversent l'embase (7) et leur tête (21) reposent dans un élargissement d'alésage (18) s'ouvrant en direction du rotor (1).
  5. Pompe centrifuge selon la revendication 3 ou 4, caractérisée en ce que la ou les vis de réglage (16) sont entourées d'un ressort hélicoïdal de compression (20) exerçant la pression de ressort sur l'embase (7).
  6. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que l'écartement entre les lames (3, 4) et l'embase (7, 7c) mesure de 0,5 à 2 mm.
  7. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que l'embase (7) du côté orienté vers le rotor est courbée, en particulier concave et la hauteur des lames (3, 4) diminue vers l'extérieur en fonction de la courbure.
  8. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que l'ouverture d'aspiration (8) présente dans sa paroi intérieure des canaux d'écoulement en forme de rainure (11), disposés de préférence parallèlement au sens de l'écoulement principal dans l'ouverture d'aspiration.
  9. Pompe centrifuge selon la revendication 8, caractérisée en ce que la paroi intérieure de l'ouverture d'aspiration (8) est cylindrique et que les canaux d'écoulement (11) sont disposés parallèlement à l'axe de la paroi intérieure du cylindre.
  10. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que
    - l'embase (7) du carter de pompe avec l'ouverture d'aspiration (8), au-dessus de laquelle s'étendent à faible distance les bords libres (3a, 4a) des lames (3, 4), présente au moins une, de préférence plusieurs rainures courbées (10) en forme de C,
    - que les rainures (10) partent de l'ouverture d'aspiration (8) et s'étendent jusqu'au bord extérieur de l'embase (7) et
    - Que les rainures (10) sont courbées en opposé à la courbure des lames (3, 4).
  11. Pompe centrifuge selon la revendication 10, caractérisée en ce que celle des parois latérales des rainures (10) sur laquelle une lame (3, 4) passe en dernier forme une surface inclinée (15) étendant la rainure vers l'extérieur.
EP13805772.4A 2012-12-05 2013-12-02 Pompe centrifuge, en particulier pour eaux usées ou eaux grasses Active EP2929191B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012023734.0A DE102012023734A1 (de) 2012-12-05 2012-12-05 Kreiselpumpe insbesondere für Abwasser oder Schmutzwasser
PCT/EP2013/003626 WO2014086472A1 (fr) 2012-12-05 2013-12-02 Pompe centrifuge, en particulier pour eaux usées ou eaux grasses

Publications (2)

Publication Number Publication Date
EP2929191A1 EP2929191A1 (fr) 2015-10-14
EP2929191B1 true EP2929191B1 (fr) 2020-07-15

Family

ID=49766025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13805772.4A Active EP2929191B1 (fr) 2012-12-05 2013-12-02 Pompe centrifuge, en particulier pour eaux usées ou eaux grasses

Country Status (5)

Country Link
US (1) US9869326B2 (fr)
EP (1) EP2929191B1 (fr)
CN (1) CN104903584B (fr)
DE (1) DE102012023734A1 (fr)
WO (1) WO2014086472A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6415116B2 (ja) 2014-05-30 2018-10-31 株式会社荏原製作所 汚水ポンプ用のケーシングライナ及びこれを備えた汚水ポンプ
EP3034887B1 (fr) 2014-12-15 2019-08-07 Sulzer Management AG Positionnement d'un couvercle de pompe à l'aide de repères sur les têtes de boulon
JP6488167B2 (ja) * 2015-03-27 2019-03-20 株式会社荏原製作所 渦巻ポンプ
WO2016158666A1 (fr) * 2015-03-27 2016-10-06 株式会社 荏原製作所 Pompe centrifuge
EP3171029B1 (fr) * 2015-11-17 2019-10-16 Cornell Pump Company Pompe ayant des aubes de déflection avant, plaque d'usure et roue ayant des aubes de vidange
US10731651B2 (en) * 2016-02-23 2020-08-04 Baker Hughes, A Ge Company, Llc Apertures spaced around impeller bottom shroud of centrifugal pump
DE102016225908A1 (de) 2016-12-21 2018-06-21 KSB SE & Co. KGaA Freistrompumpe
EA202191002A1 (ru) * 2017-10-12 2021-09-09 Уэйр Минералз Острэйлиа Лтд Впускной компонент для шламового насоса
CN108302047A (zh) * 2018-04-23 2018-07-20 汉能（天津）工业泵有限公司 一种耐磨防卡死泵腔结构
CN108443164A (zh) * 2018-04-23 2018-08-24 汉能（天津）工业泵有限公司 轻型大流量低液面抽排泵
CN108457904A (zh) * 2018-04-23 2018-08-28 汉能（天津）工业泵有限公司 一种可调节式吸入口
LU100831B1 (de) * 2018-06-12 2019-12-12 Wilo Se Kreiselpumpe mit einem Pumpengehäuse
US11339804B2 (en) * 2018-08-01 2022-05-24 Liberty Pumps, Inc. Self-cleaning pump
EP3899285B1 (fr) * 2018-12-21 2024-05-22 Grundfos Holding A/S Pompe centrifuge avec racleur
US11230979B2 (en) 2019-03-08 2022-01-25 Pratt & Whitney Canada Corp. Aircraft engine fuel system and method
US11459958B2 (en) 2019-03-22 2022-10-04 Pratt & Whitney Canada Corp. Rotodynamic pump having a body defining a body cavity with a first and second housing portion defining a portion of an impeller cavity and disposed within the body cavity wherein the body cavity extends at least in part around the second housing portion and the housing portions defining an impeller clearance
US11280342B2 (en) 2019-04-05 2022-03-22 Pratt & Whitney Canada Corp. Rotodynamic pump and method
DE102019124590A1 (de) * 2019-09-12 2021-03-18 HWC GmbH & Co. KG Kreiselpumpe und Verfahren zum Einstellen eines Axialspalts
CN112502998B (zh) * 2020-12-01 2022-08-05 石家庄栾兴泵业有限公司 一种低噪节能的双壳渣浆泵
CN113819088B (zh) * 2021-09-07 2023-08-08 安徽凯特泵业有限公司 一种具有角度调节功能的潜水排污泵
CN117514937B (zh) * 2024-01-05 2024-03-12 东营合瑞石油技术有限责任公司 一种防堵塞泥浆泵

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7212196U (fr) * Grundfos As
CH476213A (de) * 1966-06-08 1969-07-31 Luwa Ag Radialventilator für pneumatische Förderanlage
FR2681906B1 (fr) * 1991-09-27 1995-01-20 Renault Vehicules Ind Pompe centrifuge pour circuit de liquide de refroidissement de moteur a combustion.
DE4142120A1 (de) 1991-12-20 1993-06-24 Porsche Ag Kuehlwasserpumpe fuer eine brennkraftmaschine
JP3468529B2 (ja) * 1996-03-06 2003-11-17 株式会社日立製作所 プロペラファン
SE520417C2 (sv) * 1997-12-18 2003-07-08 Flygt Ab Itt Pump av centrifugal- eller halvaxiell typ avsedd för pumpning av orensat avloppsvatten
DE19823603A1 (de) * 1998-05-27 1999-12-02 Behr Thermot Tronik Gmbh & Co Vorrichtung zum Steuern der Kühlmitteltemperatur eines Verbrennungsmotors eines Fahrzeuges
GB9814040D0 (en) 1998-06-29 1998-08-26 Martin William Sonic device
US6390768B1 (en) * 1999-03-22 2002-05-21 David Muhs Pump impeller and related components
AUPR564501A0 (en) * 2001-06-13 2001-07-12 Warman International Limited Apparatus for use in pumps
ITBO20020142A1 (it) * 2002-03-22 2003-09-22 Pierburg Spa Pompo acqua autoregolante
DE50303864D1 (de) 2003-12-04 2006-07-27 Tcg Unitech Systemtechnik Gmbh Radialpumpe
EP1538339B1 (fr) * 2003-12-04 2006-11-22 TCG Unitech Systemtechnik GmbH Pompe radiale
DE102005056200A1 (de) * 2005-11-25 2007-06-06 Audi Ag Pumpe für ein flüssiges Medium, insbesondere Kühlmittelpumpe, sowie Stellelement für eine solche Pumpe
CN2874088Y (zh) * 2005-12-20 2007-02-28 上海连成（集团）有限公司 一种开式叶轮间隙可调节装置
EP1906025A1 (fr) 2006-09-22 2008-04-02 Frideco AG Pompe centrifuge
SE531147C2 (sv) 2007-05-15 2009-01-07 Itt Mfg Enterprises Inc Dränkbar centrifugalpump med normal- och uttömningsdrifttillstånd
CN201401341Y (zh) 2009-04-28 2010-02-10 华南理工大学 一种工艺流程浆泵
DE102010026176B4 (de) * 2010-07-06 2015-12-17 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Vorrichtung und Verfahren zur Kennfeldstabilisierung eines Verdichters
CN102374172A (zh) * 2010-08-12 2012-03-14 江苏尚宝罗泵业有限公司 一种叶轮可调整的无堵塞旋转式纸浆泵

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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WO2014086472A1 (fr) 2014-06-12
DE102012023734A1 (de) 2014-06-05
US20150292519A1 (en) 2015-10-15
EP2929191A1 (fr) 2015-10-14
US9869326B2 (en) 2018-01-16
CN104903584B (zh) 2017-07-14
CN104903584A (zh) 2015-09-09

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