EP0797737B1 - Carter de pompe centrifuge avec carter interieur en plastique - Google Patents

Carter de pompe centrifuge avec carter interieur en plastique Download PDF

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Publication number
EP0797737B1
EP0797737B1 EP95941672A EP95941672A EP0797737B1 EP 0797737 B1 EP0797737 B1 EP 0797737B1 EP 95941672 A EP95941672 A EP 95941672A EP 95941672 A EP95941672 A EP 95941672A EP 0797737 B1 EP0797737 B1 EP 0797737B1
Authority
EP
European Patent Office
Prior art keywords
case
centrifugal pump
housing
extension
inner case
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
EP95941672A
Other languages
German (de)
English (en)
Other versions
EP0797737A1 (fr
Inventor
Armin Renneisen
Axel Riel
Frank Schwaab
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.)
KSB AG
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Publication of EP0797737A1 publication Critical patent/EP0797737A1/fr
Application granted granted Critical
Publication of EP0797737B1 publication Critical patent/EP0797737B1/fr
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
    • F04D29/40—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
    • F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a centrifugal pump according to the preamble of claim 1.
  • Centrifugal pump housings are usually made of a metallic material. It However, there are applications in which a medium is due to its Aggressiveness can damage the metallic material. For such Pump media made of plastic are suitable because they in addition to its high resistance to aggressive media, also one enable inexpensive production. For low loads due to compressive forces Use cases have been made entirely of plastic Pump housing enforced. In those applications, however, where the pump housing is exposed to major external or internal pressure loads is, the plastic housing is reinforced by an outer metallic housing. This is the property of the plastic, under the influence of Flow pressures counteracted.
  • a pump housing is known, the outer housing of which is one in the axial direction Drive shaft is formed divided, the part plane through the pressure port and the suction pipe runs.
  • This design allows the molding production of a made of plastic inner housing, which with already molded suction and pressure port is provided. Has in the area of a housing cover the inner housing via a radially protruding collar.
  • Corresponding covenants are also at the end of the suction and pressure ports. These covenants serve the Fixing the inner housing and at the same time form a seal for it fastening flanges of pressure lines or housing covers.
  • a corresponding solution only with a housing division transverse to the drive axis, shows DE-B 20 01 267. Since plastics are subject to shrinkage, and within alternating pressures prevail in the pump housing are additional Measures for the secure installation of the inner housing are required.
  • a water jet propulsion system for ships is known from US Pat. No. 5,346,363, in which only in the impeller area a partial plastic lining between the flanges is jammed.
  • a spiral space downstream of the impeller consists of metal and is not resistant to aggressive media. If improper The ring-shaped part of the clamped between flanges can be assembled Lining will be destroyed.
  • US-A 2 110 079 shows a centrifugal pump for conveying media containing sand. It has a metallic inner housing for wear purposes.
  • One for Assembly of the metallic inner housing is necessary by a Sealing cord sealed. When assembling parts of the sealing cord are in radial grooves open to the outside are pressed. After the wear-related Destruction of the inner housing, the seal is destroyed, so that on the radial Grooves create a leak that acts as a closure indicator for an operator serves. If a leak occurs, the inner housing must be replaced.
  • a such a solution is only conditionally tolerable when pumping water.
  • a slurry pump is known, the outer housing encased a rubber lining.
  • the rubber lining consists of two with theirs Face-to-face half-shells. In the area of these end faces are additional flanges arranged together with the flanges of the Outer housing pressed together in a joint joint are.
  • the tightness of such pumps is due to the area of application low requirements, as a possible leak is only an indicator of represents a renewal of the lining.
  • the invention is based on the problem of the deformation behavior of a To minimize plastic inner housing under pressure or temperature influences. This problem is solved according to the features of claim 1.
  • the solution according to the invention provides for reducing the deformations Definition of the inner housing in the area of a transverse to the shaft axis Housing division before.
  • the inner housing part surrounding an impeller has a outer projecting extension, which in the area of the housing division between the both parts of the outer housing is fixed.
  • the division of the outer housing runs at one single-stage centrifugal pump with axial suction and radial pressure nozzle through the pressure port.
  • the inner housing can then molded or molded pressure nozzle lining be. Another one is available for the suction nozzle lining constructive solution.
  • Embodiments of the invention that in claims 2 and 3 define the area in which the Extent is arranged on the inner housing. It is common the middle area of that housing section, the one Impeller wrapped. Depending on the size of the pump to be used, the location of the extension in the central area can be somewhat vary to with the sub-level of a pressure port agree.
  • the further configurations of the invention describe the shape and holding the extension. It can be circulating annular element or arranged in sections projecting sections be designed.
  • the shape of the The above extent depends on the way with which the counter surfaces in the area of the partial plane of the Outer housing can be produced. This depends on the at a manufacturer of existing technical equipment.
  • the invention is based on the example of a one-stage Centrifugal pump shown, but not limited to.
  • the Partial plane 1 is perpendicular to the drawing plane. she runs transverse to the shaft axis 2, through the pressure port 3 and forms a joining zone for housing parts 4, 5, which are assembled Form the outer housing.
  • the housing part 4 has a suction port 6 and the Housing part 5 serves to receive the outer housing closing pressure cover 7. With several over the circumference of the outer housing arranged distributed connecting elements 8, here screw elements, the housing parts 4, 5 and Pressure cover 7 held together. In the area of an implementation for the shaft 9 is an abutment 10 for a shaft seal 11 attached.
  • the housing part 5 of the Outer housing via a groove 12 into which an extension 13 of an inner housing 14 engages.
  • this groove 13 on only one or on both housing parts 4, 5 to be appropriate.
  • the inner housing 14 shown here is formed in one piece, this depends on the particular Material used. With a soft compliant Material can the molded sealing surface 15 in a Assembly to be pushed into the suction nozzle 6. With materials, that do not allow such a deformation finds one other constructive solution application.
  • a lining 16 attached to the pressure cover 7 serves the purpose Closure of the inner housing 14, wherein a sealing ring 17th effectively prevents fluid leakage.
  • the protruding extension acts as a for the inner housing 14 Fixed camp. Instead of the previously used for the deformation calculation width B used is only the distance from the Extension 13 to use the end points of the width B. This makes the inner housing 14 considerably more resistant against changes in shape due to temperature influences.
  • FIG. 2 which is a section along line A - A of FIG. 1st corresponds to, shows a view of the housing part 4 with inserted inner housing 14.
  • the extension 13 can also as Insert to be formed. This could be a one or be a multi-part component, which, for example, in the Inner housing 14 can be molded with.
  • molded brackets 16 On the housing part 4 molded brackets 16 have receptacles 17 for the Housing parts 4, 5 holding fasteners together. In the In the simplest form, these are threaded holes for fastening Screws or bolts.
  • FIG. 3 shows an embodiment of an extension 13 shown, which for the inner housing 14 simultaneously as Reinforcing element acts.
  • the extension 13 is here Part of a separate insert.
  • the one in the Plastic of the inner housing 14 engaging part of the Extension 13 can be of different shapes. Important is an obstacle to the movement of the inner housing 14 Shape.
  • An example is a T-shaped one in cross section Ring element 18 shown. Its from the material of the inner casing enclosed part can additionally reinforce the Effect wall surface against deformation. For improvement the connection it is also possible to have a variety of openings 19 to attach.
  • a protruding web then serves as an extension 13 for fixing the inner housing 14 between the parts 4, 5 of the outer case.

Landscapes

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

Claims (6)

  1. Pompe centrifuge avec une roue mobile pour le transport de fluides agressifs, avec un corps extérieur en au moins deux parties (4, 5) assurant la transmission des efforts, et un corps intérieur en une partie (14) constitué de matière synthétique, assurant le guidage du liquide, le corps intérieur (14) s'applique avec une extension en saillie radiale (13) contre le corps extérieur et est fixé dans une partition de corps (1), le corps intérieur (14) est obturé de façon étanche par un garnissage (16) du genre d'un couvercle, le corps intérieur (14) et le garnissage du genre d'un couvercle (16) couvrent toutes les surfaces du corps extérieur (4, 5) venant en contact avec le fluide transporté, et le corps extérieur (4, 5) présente une partition de corps orientée transversalement à un axe d'arbre (2), caractérisée en ce que la partition de corps du corps extérieur (4, 5) se trouve dans un plan de séparation (1) passant par le tuyau de refoulement (3) et en ce que l'extension radiale (13) est disposée dans la zone centrale d'une surface latérale extérieure du corps intérieur en une partie (14) entourant la roue mobile.
  2. Pompe centrifuge suivant la revendication 1, caractérisée en ce que la zone centrale du corps intérieur (14) s'étend au maximum sur 50 % de la largeur (B) du corps intérieur (14) contrôlable dans la zone du diamètre extérieur.
  3. Pompe centrifuge suivant la revendication 1 ou 2, caractérisée en ce que l'extension (13) en saillie sur le corps intérieur (14) est en une ou en plusieurs parties.
  4. Pompe centrifuge suivant la revendication 3, caractérisée en ce que l'extension en saillie (13) du corps intérieur (14) est serrée dans le plan de séparation (1) de la partition de corps.
  5. Pompe centrifuge suivant la revendication 3 ou 4, caractérisée en ce que l'extension en saillie (13) positionne le corps intérieur (14) dans le corps extérieur (4, 5).
  6. Pompe centrifuge suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que l'extension (13) est constituée par une pièce encastrée (16) en une ou en plusieurs parties.
EP95941672A 1994-12-16 1995-12-05 Carter de pompe centrifuge avec carter interieur en plastique Expired - Lifetime EP0797737B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4444968A DE4444968A1 (de) 1994-12-16 1994-12-16 Kreiselpumpengehäuse mit Innengehäuse aus Kunststoff
DE4444968 1994-12-16
PCT/EP1995/004782 WO1996018822A1 (fr) 1994-12-16 1995-12-05 Carter de pompe centrifuge avec carter interieur en plastique

Publications (2)

Publication Number Publication Date
EP0797737A1 EP0797737A1 (fr) 1997-10-01
EP0797737B1 true EP0797737B1 (fr) 1999-03-10

Family

ID=6536059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95941672A Expired - Lifetime EP0797737B1 (fr) 1994-12-16 1995-12-05 Carter de pompe centrifuge avec carter interieur en plastique

Country Status (4)

Country Link
EP (1) EP0797737B1 (fr)
DE (2) DE4444968A1 (fr)
DK (1) DK0797737T3 (fr)
WO (1) WO1996018822A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015082679A1 (fr) 2013-12-06 2015-06-11 Ksb Aktiengesellschaft Carter de pompe en matière plastique possédant une coque intérieure, une coque extérieure et une matière de remplissage entre celles-ci

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703739U1 (de) * 1997-03-01 1998-08-13 H. Wernert & Co. oHG, 45476 Mülheim Radialpumpe für aggressive Flüssigkeiten
US6988870B2 (en) * 2004-01-27 2006-01-24 Weir Slurry Group, Inc. Casing for a centrifugal pump
ES1067274Y (es) * 2008-02-05 2008-08-01 Bombas Psh S A Bomba centrifuga de flujo mixto para piscinas
CN102374199A (zh) * 2011-11-18 2012-03-14 宜兴市宙斯泵业有限公司 耐腐耐磨离心泵蜗壳
DE102012108354B4 (de) 2012-09-07 2016-05-12 Herborner Pumpenfabrik J. H. Hoffmann Gmbh & Co. Kg Pumpe und Protektor für Pumpe
KR101427791B1 (ko) * 2013-01-07 2014-08-08 (주)플로닉스 플라스틱 펌프 제조방법
CN105570183A (zh) * 2015-12-10 2016-05-11 安徽凯特泵业有限公司 汽车制造喷漆工艺用离心泵
CN112922902A (zh) * 2019-12-06 2021-06-08 广州市拓道新材料科技有限公司 一种陶瓷泵体

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2110079A (en) * 1937-04-13 1938-03-01 Clyde A Butler Sand pump
DE1879536U (de) * 1963-05-08 1963-09-19 Ruhrkunststoff G M B H Kreiselpumpe.
US3551067A (en) * 1969-01-22 1970-12-29 Duriron Co Lined corrosion resistant pump
SE428957B (sv) * 1975-06-02 1983-08-01 Warman Int Ltd Invendigt fodrat hogtryckspumphus
US4722664A (en) * 1981-06-05 1988-02-02 The Duriron Company, Inc. Lined corrosion resistant pump
DE3916915A1 (de) * 1989-05-24 1990-11-29 Abs Pumpen Ag Pumpengehaeuse
US5346363A (en) * 1993-04-23 1994-09-13 Outboard Jet - Trutol Bearings, Inc. Liner for a water jet propulsion pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015082679A1 (fr) 2013-12-06 2015-06-11 Ksb Aktiengesellschaft Carter de pompe en matière plastique possédant une coque intérieure, une coque extérieure et une matière de remplissage entre celles-ci
DE102013225065A1 (de) 2013-12-06 2015-06-11 Ksb Aktiengesellschaft Pumpengehäuse in Kunststoffbauweise
DE102013225065B4 (de) * 2013-12-06 2016-04-14 Ksb Aktiengesellschaft Pumpengehäuse in Kunststoffbauweise

Also Published As

Publication number Publication date
DK0797737T3 (da) 2000-06-05
DE4444968A1 (de) 1996-06-20
DE59505330D1 (de) 1999-04-15
EP0797737A1 (fr) 1997-10-01
WO1996018822A1 (fr) 1996-06-20

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