ES2263356A1 - Centrifugal pump - Google Patents

Centrifugal pump

Info

Publication number
ES2263356A1
ES2263356A1 ES200402698A ES200402698A ES2263356A1 ES 2263356 A1 ES2263356 A1 ES 2263356A1 ES 200402698 A ES200402698 A ES 200402698A ES 200402698 A ES200402698 A ES 200402698A ES 2263356 A1 ES2263356 A1 ES 2263356A1
Authority
ES
Spain
Prior art keywords
pumps
impeller
cover
pump
modular system
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.)
Granted
Application number
ES200402698A
Other languages
Spanish (es)
Other versions
ES2263356B1 (en
Inventor
Josep M. Badosa Busquets
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.)
Bominox S A
BOMINOX SA
Original Assignee
Bominox S A
BOMINOX SA
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 Bominox S A, BOMINOX SA filed Critical Bominox S A
Priority to ES200402698A priority Critical patent/ES2263356B1/en
Priority to AT05381050T priority patent/ATE427431T1/en
Priority to EP05381050A priority patent/EP1669611B1/en
Priority to ES05381050T priority patent/ES2322813T3/en
Priority to DE602005013632T priority patent/DE602005013632D1/en
Publication of ES2263356A1 publication Critical patent/ES2263356A1/en
Application granted granted Critical
Publication of ES2263356B1 publication Critical patent/ES2263356B1/en
Anticipated expiration legal-status Critical
Active legal-status Critical Current

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
    • F04D29/40—Casings; Connections of working fluid
    • 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
    • F04D29/628—Mounting; Assembling; Disassembling of 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Reciprocating Pumps (AREA)

Abstract

An inner seat (1.2), provided on a body flange (1), receives a cover closure (3) that allows coupling of different types of mechanical closures between said cover closure and wheels (4,5). A pump intake (15) is welded to a cover (2). The body flange is joined to the casing of a motor (12).

Description

Sistema modular simplificado de fabricación de bombas centrífugas.Simplified modular manufacturing system centrifugal pumps.

Objeto de la invenciónObject of the invention

La presente invención tiene por objeto un sistema modular simplificado de fabricación de bombas centrífugas el cuál, debido a su configuración, proporciona una mayor solidez al conjunto de la bomba, a, la vez que se evitan vibraciones y descentramientos.The present invention aims at a Simplified modular centrifugal pump manufacturing system which, due to its configuration, provides greater strength to the pump assembly, at the same time that vibrations are avoided and offsets

Además, el montaje de este sistema es muy sencillo debido a la conjunción en una única pieza de la brida adyacente al motor y el plato intermedio con orificio para el paso del eje del motor, con la consiguiente disminución de los costes.In addition, the assembly of this system is very simple due to the conjunction in a single flange piece adjacent to the engine and the intermediate plate with hole for the passage of the motor shaft, with the consequent decrease in costs

Debido a la configuración del sistema modular, el rendimiento de la bomba aumenta, además de poder ser utilizado tanto en bombas de tipo sanitario como en bombas de tipo industrial.Due to the modular system configuration, pump performance increases, besides being able to be used both in sanitary type pumps and in type pumps industrial.

Antecedentes de la invenciónBackground of the invention

Es sobradamente conocido en el estado de la técnica las bombas centrífugas en las que los elementos que constituyen la carcasa y que contienen el rotor son de fundición, lo que conlleva a un resultado económicamente costoso.It is well known in the state of technique centrifugal pumps in which the elements that constitute the housing and containing the rotor are cast iron, which leads to an economically expensive result.

Una segunda configuración conocida de las bombas centrífugas, recogida en los Modelos de Utilidad con números de solicitud U286465 y U9101925, presenta una carcasa constituida a partir de piezas estampadas.A second known configuration of the pumps  centrifuges, collected in the Utility Models with numbers of application U286465 and U9101925, presents a housing constituted to from stamped pieces.

Además, en las configuraciones anteriores, el cierre mecánico está subordinado tanto a la forma del plato intermedio como a la distancia entre ésta y la turbina o rodete.In addition, in the previous configurations, the mechanical closure is subordinated to both the shape of the plate intermediate as at the distance between it and the turbine or impeller

Todos estos inconvenientes quedan superados mediante la invención que ahora se procede a describir.All these inconveniences are overcome by the invention that is now described.

Descripción de la invenciónDescription of the invention

La presente invención se refiere a un sistema modular simplificado de fabricación de bombas centrífugas constituido por un cuerpo-brida de una sola pieza, que sirve de unión a la carcasa del motor, de paso del eje del rodete y de la parte destinada a la impulsión de la bomba.The present invention relates to a system Simplified modular manufacturing of centrifugal pumps consisting of a one-piece flange body, serving as a connection to the motor housing, passing the shaft of the impeller and the part intended for the pump drive.

Además, la carcasa se completa con la tapa, a la que se une mediante soldadura la aspiración de la bomba.In addition, the housing is completed with the lid, to the  which is joined by welding the suction of the pump.

La estanqueidad entre el cuerpo-brida y la tapa se consigue mediante una junta tórica situada en el asiento periférico del cuerpo-brida.The tightness between the body-flange and the cover is achieved by a O-ring located in the peripheral seat of the body-flange.

Esta cuerpo-brida está realizado en fundición o microfusión, mientras que la tapa se realiza en estampación, en cuya embocadura se encuentra la aspiración de la bomba.This flange body is made in cast iron or microfusion, while the lid is made in stamping, in whose mouth is the aspiration of the bomb.

Adicionalmente se puede realizar una operación de acabado y pulido de la superficie interior por donde transita el fluido con lo que se garantiza que la bomba sea aséptica para su utilización con productos alimentarios o farmacéuticos.Additionally an operation can be performed finishing and polishing the inner surface where the fluid which ensures that the pump is aseptic for its use with food or pharmaceutical products.

El cuerpo-brida, debido a su configuración interior presenta una tapa-cierre que permite acoplar distintos tipos de cierres mecánicos, como distanciadores, muelles, retenes, tuercas, etc.The body-flange, due to its interior configuration features a lid-closure that It allows coupling different types of mechanical seals, such as spacers, springs, seals, nuts, etc.

La funcionalidad del sistema modular reside en su adaptabilidad tanto a bombas de aplicación sanitaria como a bombas de aplicación industrial, donde el rodete, abierto en las primeras y semiabierto en las segundas, está completamente ajustado al cuerpo-brida y a la tapa, con lo que el rendimiento de las mismas es mayor.The functionality of the modular system lies in its adaptability to both sanitary application pumps and industrial application pumps, where the impeller, open in the first and semi-open in the second, it is completely adjusted to the body-flange and the cover, so that the Their performance is higher.

En las bombas de aplicación sanitaria, el cuerpo-brida y la tapa quedan unidos mediante una abrazadera, mientras que en las bombas de aplicación industrial esta unión se realiza mediante tornillos.In sanitary application pumps, the flange body and cover are joined by a clamp while in industrial application pumps This connection is made by screws.

A su vez, en la aplicación sanitaria, la tuerca ciega colocada en el extremo del eje del rodete presenta una arandela de presión interior y una junta tórica de estanqueidad del eje, mientras que en la aplicación industrial presenta una arandela estándar.In turn, in the sanitary application, the nut blind placed at the end of the impeller shaft has a inner pressure washer and an o-ring seal axis, while in the industrial application presents a washer standard.

En caso de que el sistema modular se utilice para su aplicación como bomba sanitaria se incluye entre la carcasa del motor y el cuerpo-brida una junta tórica para evitar la entrada de líquidos de limpieza dentro del motor.In case the modular system is used for application as a sanitary pump is included between the housing of the motor and the body-flange an o-ring for prevent the entry of cleaning fluids into the engine.

Como se ha comprobado en la descripción, el sistema modular simplificado de fabricación de bombas centrífugas ofrece una gran versatilidad y aplicabilidad a los dos tipos de bomba descritos debido a su configuración.As verified in the description, the Simplified modular centrifugal pump manufacturing system offers great versatility and applicability to both types of Pump described due to its configuration.

Descripción de los dibujosDescription of the drawings

Se complementa la presente memoria descriptiva, con un juego de planos, ilustrativos del ejemplo preferente y nunca limitativo de la invención.This descriptive report is complemented, with a set of drawings, illustrative of the preferred example and never limiting the invention.

La Figura 1 muestra la sección de una realización de la invención donde se observa el sistema modular en el que la media sección A hace referencia a una bomba centrífuga de tipo sanitario y la media sección B hace referencia a una bomba centrífuga de tipo industrial.Figure 1 shows the section of a embodiment of the invention where the modular system is observed in which the middle section A refers to a centrifugal pump of sanitary type and the middle section B refers to a pump industrial type centrifuge.

Realización preferente de la invenciónPreferred Embodiment of the Invention

A la vista de lo anteriormente enunciado, la presente invención se refiere a un sistema modular simplificado de fabricación de bombas centrífugas, constituido por un cuerpo-brida (1) que va unido a la carcasa de un motor (12), y además permite el paso del eje (13) del rodete abierto (4) en bombas de aplicación sanitaria y del rodete semiabierto (5) en bombas de aplicación industrial, e incluye también la parte destinada a la impulsión (14) de la bomba.In view of the foregoing, the The present invention relates to a simplified modular system of manufacture of centrifugal pumps, consisting of a flange body (1) that is attached to the housing of a motor (12), and also allows the passage of the shaft (13) of the impeller open (4) in sanitary and impeller pumps semi-open (5) in industrial application pumps, and includes also the part intended for the pump drive (14).

La carcasa de la bomba se completa con una tapa (2), a la que se une la aspiración (15) de la bomba mediante soldadura.The pump housing is completed with a cover (2), to which the suction (15) of the pump is attached by welding.

La estanqueidad entre el cuerpo-brida (1) y la tapa (2) se consigue mediante una junta tórica (8) situada en el asiento periférico (1.1) del cuerpo-brida (1).The tightness between the flange body (1) and the cover (2) is achieved by an o-ring (8) located in the peripheral seat (1.1) of the flange body (1).

El cuerpo-brida (1), presenta un asiento interior (1.2) donde apoya una tapa-cierre (3) que permite acoplar distintos tipos de cierres mecánicos entre esta tapa- cierre (3) y el rodete (4, 5).The flange body (1), presents a inner seat (1.2) where it supports a cover-closure (3) that allows to connect different types of mechanical seals between this cover-closure (3) and the impeller (4, 5).

Debido a la funcionalidad del sistema modular, cuando este se aplica a bombas sanitarias el cuerpo-brida (1) y la tapa (2) quedan unidos mediante una abrazadera (6), mientras que mediante una tuerca ciega (9) va inserta en el extremo del eje (13) del rodete (4) presentando preferentemente una arandela de presión interior (16) y una junta tórica (17) de estanqueidad del eje (13).Due to the functionality of the modular system, when this is applied to sanitary pumps the flange body (1) and cover (2) are joined using a clamp (6), while using a blind nut (9) is inserted at the end of the shaft (13) of the impeller (4) preferably presenting an inner pressure washer (16) and an O-ring (17) of shaft seal (13).

En las bombas de aplicación industrial, para unir el cuerpo-brida (1) y la tapa (2) se utilizan tornillos (7) y la tuerca ciega (9) presenta preferentemente una arandela estándar (18).In industrial application pumps, for join the flange body (1) and the cover (2) are used screws (7) and the blind nut (9) preferably has a standard washer (18).

En caso de que el sistema modular se utilice para su aplicación como bomba sanitaria se incluye entre la carcasa del motor (12) y el cuerpo-brida (1) una junta tórica (10) para evitar la entrada de líquidos de limpieza dentro del motor.In case the modular system is used for application as a sanitary pump is included between the housing of the motor (12) and the flange body (1) a gasket O-ring (10) to prevent the entry of cleaning liquids into the motor.

No altera la esencialidad de esta invención variaciones en materiales, forma y tamaño de los elementos componentes, descritos de manera no limitativa, bastando ésta para proceder a su reproducción por un experto.It does not alter the essentiality of this invention variations in materials, shape and size of the elements components, described in a non-limiting manner, it is sufficient to proceed to reproduction by an expert.

Claims (8)

1. Sistema modular simplificado de fabricación de bombas centrífugas, de entre los que la estanqueidad entre las piezas que componen la carcasa y están en contacto con el fluido se consigue mediante una junta tórica (8), caracterizado porque la carcasa de la bomba está formada por una primera pieza, cuerpo-brida (1), la cuál va unida a la carcasa de un motor (12), permite el paso del eje (13) del rodete (4, 5), e incluye la parte destinada a la impulsión (14) de la bomba, y una segunda pieza, tapa (2), a la que se une mediante soldadura la aspiración (15) de la bomba, donde el cuerpo-brida (1), presenta un asiento interior (1.2) donde apoya una tapa-cierre (3) que permite acoplar distintos tipos de cierres mecánicos entre esta tapa-cierre (3) y el rodete (4, 5).1. Simplified modular system for manufacturing centrifugal pumps, among which the tightness between the parts that make up the housing and are in contact with the fluid is achieved by an O-ring (8), characterized in that the pump housing is formed by a first piece, body-flange (1), which is attached to the casing of an engine (12), allows the passage of the shaft (13) of the impeller (4, 5), and includes the part intended for the drive (14) of the pump, and a second piece, cover (2), to which the suction (15) of the pump is attached by welding, where the body-flange (1), has an inner seat (1.2) where supports a cover-closure (3) that allows different types of mechanical seals to be coupled between this cover-closure (3) and the impeller (4, 5). 2. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque el cuerpo-brida (1) y la tapa (2) quedan unidos mediante una abrazadera (6) cuando el sistema se aplica a bombas sanitarias.2. Simplified modular system for manufacturing centrifugal pumps according to claim 1, characterized in that the flange body (1) and the cover (2) are connected by a clamp (6) when the system is applied to sanitary pumps. 3. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque el cuerpo-brida (1) y la tapa (2) quedan unidos mediante tornillos (7) cuando el sistema se aplica a bombas industriales.3. Simplified modular system for manufacturing centrifugal pumps according to claim 1, characterized in that the flange body (1) and the cover (2) are connected by screws (7) when the system is applied to industrial pumps. 4. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque una tuerca ciega (9) va inserta en el extremo del eje (13) del rodete (4) presentando preferentemente una arandela de presión interior (16) y una junta tórica (17) de estanqueidad del eje (13), cuando el sistema se aplica a bombas sanitarias.4. Simplified modular system for manufacturing centrifugal pumps according to claim 1, characterized in that a blind nut (9) is inserted at the end of the shaft (13) of the impeller (4) preferably presenting an inner pressure washer (16) and an O-ring (17) shaft seal (13), when the system is applied to sanitary pumps. 5. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque una tuerca ciega (9) va inserta en el extremo del eje (13) del rodete (5) presentando preferentemente una arandela estándar (18), cuando el sistema se aplica a bombas industriales.5. Simplified modular centrifugal pump manufacturing system according to claim 1 characterized in that a blind nut (9) is inserted at the end of the shaft (13) of the impeller (5) preferably presenting a standard washer (18), when the system is applied to industrial pumps. 6. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque entre la carcasa del motor (12) y el cuerpo-brida (1) existe una junta tórica (10) para evitar la entrada de líquidos de limpieza dentro del motor, cuando el sistema se aplica a bombas sanitarias.6. Simplified modular system for manufacturing centrifugal pumps according to claim 1 characterized in that between the motor housing (12) and the flange body (1) there is an O-ring (10) to prevent the entry of cleaning liquids into the motor, when the system is applied to sanitary pumps. 7. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque el rodete (4) es abierto en bombas de aplicación sanitaria.7. Simplified modular system for manufacturing centrifugal pumps according to claim 1, characterized in that the impeller (4) is opened in sanitary application pumps. 8. Sistema modular simplificado de fabricación de bombas centrífugas según reivindicación 1 caracterizado porque el rodete (5) es semiabierto en bombas de aplicación industrial.8. Simplified modular system for manufacturing centrifugal pumps according to claim 1, characterized in that the impeller (5) is semi-open in pumps for industrial application.
ES200402698A 2004-11-10 2004-11-10 SIMPLIFIED MODULAR SYSTEM OF MANUFACTURE OF CENTRIFUGAL PUMPS. Active ES2263356B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES200402698A ES2263356B1 (en) 2004-11-10 2004-11-10 SIMPLIFIED MODULAR SYSTEM OF MANUFACTURE OF CENTRIFUGAL PUMPS.
AT05381050T ATE427431T1 (en) 2004-11-10 2005-11-07 CENTRIFUGAL PUMP
EP05381050A EP1669611B1 (en) 2004-11-10 2005-11-07 Centrifugal pump
ES05381050T ES2322813T3 (en) 2004-11-10 2005-11-07 CENTRIFUGAL PUMP.
DE602005013632T DE602005013632D1 (en) 2004-11-10 2005-11-07 rotary pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200402698A ES2263356B1 (en) 2004-11-10 2004-11-10 SIMPLIFIED MODULAR SYSTEM OF MANUFACTURE OF CENTRIFUGAL PUMPS.

Publications (2)

Publication Number Publication Date
ES2263356A1 true ES2263356A1 (en) 2006-12-01
ES2263356B1 ES2263356B1 (en) 2007-11-16

Family

ID=35589647

Family Applications (2)

Application Number Title Priority Date Filing Date
ES200402698A Active ES2263356B1 (en) 2004-11-10 2004-11-10 SIMPLIFIED MODULAR SYSTEM OF MANUFACTURE OF CENTRIFUGAL PUMPS.
ES05381050T Active ES2322813T3 (en) 2004-11-10 2005-11-07 CENTRIFUGAL PUMP.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES05381050T Active ES2322813T3 (en) 2004-11-10 2005-11-07 CENTRIFUGAL PUMP.

Country Status (4)

Country Link
EP (1) EP1669611B1 (en)
AT (1) ATE427431T1 (en)
DE (1) DE602005013632D1 (en)
ES (2) ES2263356B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972789B1 (en) * 2007-03-23 2017-02-22 IHC Holland IE B.V. Centrifugal pump comprising a spiral shape mounting arrangement
DE102008013473A1 (en) * 2008-03-10 2009-09-17 Wilo Ag Pump housing with rotatable mounting flanges
CN102720705B (en) * 2012-06-27 2014-07-09 合肥华升泵阀有限责任公司 Rotor assembling tool for large heavy-duty horizontal type multistage centrifugal pump
CN103147994A (en) * 2013-01-30 2013-06-12 上海通一水泵(集团)有限公司 Vertical single-stage fire pump
CN107131222A (en) * 2017-06-30 2017-09-05 沈阳透平机械股份有限公司 A kind of coupler protective casing
CN109826799A (en) * 2019-02-21 2019-05-31 三联泵业股份有限公司 A kind of energy-saving centrifugal pump
CN113074148B (en) * 2021-05-17 2022-09-09 方霄泵业有限公司 Water pump mechanical seal flushing structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327426A1 (en) * 1975-10-10 1977-05-06 Chevalier Georges Compact replacement pump which fits all washing machines - with wide range of mounting positions and connector orientations
ES257344U (en) * 1981-04-03 1981-11-16 Badosa Busquets Jose Maria Simplified centrifugal pump (Machine-translation by Google Translate, not legally binding)
ES286465U (en) * 1985-04-30 1986-03-16 Badosa Busquets Jose Ma. Perfected casing for centrifugal pumps (Machine-translation by Google Translate, not legally binding)
ES2051347T3 (en) * 1988-12-26 1994-06-16 Nippon Zeon Co CASE OF POLYMER MATERIAL FOR FLUID MACHINES AND PUMPS.
ES1046823U (en) * 2000-07-12 2001-02-01 Busquets Jose Maria Badosa Roller for centrifugal pumps, semiabierto star type and with deflector disc. (Machine-translation by Google Translate, not legally binding)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601498A (en) * 1969-10-23 1971-08-24 Allis Chalmers Mfg Co Centrifugal pump
ZA839093B (en) * 1982-12-24 1984-08-29 Kloeckner Humboldt Deutz Ag Centrifugal pump
IT8422050V0 (en) * 1984-06-04 1984-06-04 Jacuzzi Europ CENTRIFUGAL PUMP.
US6164910A (en) * 1998-09-22 2000-12-26 Itt Manufacturing Enterprises, Inc. Housing assembly for a fluid-working device such as a rotary pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327426A1 (en) * 1975-10-10 1977-05-06 Chevalier Georges Compact replacement pump which fits all washing machines - with wide range of mounting positions and connector orientations
ES257344U (en) * 1981-04-03 1981-11-16 Badosa Busquets Jose Maria Simplified centrifugal pump (Machine-translation by Google Translate, not legally binding)
ES286465U (en) * 1985-04-30 1986-03-16 Badosa Busquets Jose Ma. Perfected casing for centrifugal pumps (Machine-translation by Google Translate, not legally binding)
ES2051347T3 (en) * 1988-12-26 1994-06-16 Nippon Zeon Co CASE OF POLYMER MATERIAL FOR FLUID MACHINES AND PUMPS.
ES1046823U (en) * 2000-07-12 2001-02-01 Busquets Jose Maria Badosa Roller for centrifugal pumps, semiabierto star type and with deflector disc. (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
DE602005013632D1 (en) 2009-05-14
ATE427431T1 (en) 2009-04-15
ES2322813T3 (en) 2009-06-29
ES2263356B1 (en) 2007-11-16
EP1669611B1 (en) 2009-04-01
EP1669611A1 (en) 2006-06-14

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