EP1669611B1 - Centrifugal pump - Google Patents

Centrifugal pump Download PDF

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Publication number
EP1669611B1
EP1669611B1 EP05381050A EP05381050A EP1669611B1 EP 1669611 B1 EP1669611 B1 EP 1669611B1 EP 05381050 A EP05381050 A EP 05381050A EP 05381050 A EP05381050 A EP 05381050A EP 1669611 B1 EP1669611 B1 EP 1669611B1
Authority
EP
European Patent Office
Prior art keywords
pumps
centrifugal pump
cover
flange
pump according
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
EP05381050A
Other languages
German (de)
French (fr)
Other versions
EP1669611A1 (en
Inventor
Josep Maria 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 SA
Original Assignee
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 SA filed Critical Bominox SA
Publication of EP1669611A1 publication Critical patent/EP1669611A1/en
Application granted granted Critical
Publication of EP1669611B1 publication Critical patent/EP1669611B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/60—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
    • 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

Definitions

  • the object of the present invention is a simplified modular system for manufacturing centrifugal pumps, which due to its configuration, provides a greater sturdiness of the pump assembly while preventing vibrations and offsetting.
  • the blind nut placed on the end of the wheel shaft has an inner pressure washer and an O-ring for sealing the shaft, while in the industrial application it has a standard washer.
  • the present invention relates to a simplified modular system for manufacturing centrifugal pumps constituted by a body-flange (1) joined to the casing of a motor (12) and which allows passage of the shaft (13) of the open wheel (4) in sanitary application pumps and the semi-open wheel (5) in industrial application pumps, and also Includes the part Intended for the pump impulsion (14).
  • the seal of the body-flange (1) and the cover (2) is achieved by an O-ring (8), located on the peripheral seat (1.1) of the body-flange (1).
  • the body-flange (1) has an inner seat (1.2) on which rests a cover-closure (3) that allows to couple different types of mechanical closures between this cover-closure (3) and the wheel (4, 5).
  • the cover-closure system (3) comprises two parts (29,30). The outer part (29) is coupled by screws (31) to the body of the pump (1), and the inner part (30) iscoupled to the mechanical closure, the two joined to each other by screws (32).
  • the cover-closure (3) is also provided with a centering office (33).
  • the body-flange (1) and the cover (2) are joined by screws (7) while the blind nut (9) preferably Includes a standard washer (18).

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

  • The object of the present invention is a simplified modular system for manufacturing centrifugal pumps, which due to its configuration, provides a greater sturdiness of the pump assembly while preventing vibrations and offsetting.
  • In addition, the assembly of this system is very simple due to the union in a single part of the flange adjacent to the motor and the intermediate plate with an orifice to allow passage of the motor shaft, with the subsequent reduction of costs.
  • Due to the configuration of the modular system, the performance of the pump increases as well as allowing its use in both plumbing and industrial pumps.
    • BACKGROUND OF THE INVENTION
  • Centrifugal pumps are well known in the state of the art in which the elements constituting the casing and containing the rotor are made of cast iron, which results in a high cost.
  • A second known configuration of centrifugal pumps described in Utility Models with application numbers U286465 and U9101925 has a case constituted from stamped parts.
  • In addition in the aforementioned configurations is subordinated to the shape of the intermediate plate and the distance between it and the turbine or wheel.
    [0006a] In the State of the Art, some centrifugal pumps are known as the ones disclosed In GB 2159880 and in US 6164910 .
  • All of these drawbacks are overcome by the invention described in what follows.
    • DESCRIPTION OF THE INVENTION
  • The present invention relates to a simplified modular system for the construction of centrifugal pumps constituted by a body-flange in a single piece, which acts as a union to the motor casing, the wheel shaft and the part meant for impelling the pump.
  • In addition, the casing is completed by the cover, to which the pump intake is welded.
    [0009a] The seal between the body-flange and the cover is provided by O-ring placed on the peripheral seat of the body-flange.
  • This body-flange is made of cast iron or by microfusion, whereas the cover is made by stamping, the pump intake placed in its opening.
  • In addition, a finishing and polishing operation may be performed of the inner surface through which the fluid travels, ensuring the hygiene of the pump when it is used with food or pharmaceuticals.
  • Due to its inner configuration the body-flange presents a cover that allows to couple different types of mechanical closures such as spacers, springs, retainers, nuts, etc.
    [00012a] the coupling to the motor shaft/pump is determined by a conical bushing on which is tightened a part that acts as a clamp and is retained by a nut and a counter-nut.
  • The functionality of the modular system resides in its adaptability to both plumbing and industrial application pumps, where the wheel, open on the former and semi-open in the latter, is completely adjusted to the body-flange and the cover, so that their performance is greater.
  • In plumbing application pumps the body-flange and the cover are joined by a clamp, while in industrial application pumps they are joined by screws.
  • In turn, in plumbing applications the blind nut placed on the end of the wheel shaft has an inner pressure washer and an O-ring for sealing the shaft, while in the industrial application it has a standard washer.
  • When the modular system is used for application as a plumbing pump, an O-ring is disposed between the motor casing and the body-flange to prevent the entry of cleaning liquids in the motor.
  • As seen in the description, the simplified modular system for manufacturing centrifugal pumps provides a great versatility and applicability to both types of pump described, due to its configuration.
    • DESCRIPTION OF THE DRAWINGS
  • The present descriptive memory is completed by a set of drawings that illustrate the preferred example of the invention and in no way limit it.
  • Figure 1 represents a cross section of an embodiment of the invention showing the modular system in which the half-section A refers to a plumbing type centrifugal pump and the half-section B refers to an industrial type centrifugal pump.
    [0019a] Figure 2 shows a plan and elevation view of the plan
    [0019b] Figure 3, shows a plan and elevation view of the closure coupling.
    [0019c] Figure 4 shows a plan and elevation view of the closure ring.
    • PREFERRED EMBODIMENT OF THE INVENTION
  • In view of the above, the present invention relates to a simplified modular system for manufacturing centrifugal pumps constituted by a body-flange (1) joined to the casing of a motor (12) and which allows passage of the shaft (13) of the open wheel (4) in sanitary application pumps and the semi-open wheel (5) in industrial application pumps, and also Includes the part Intended for the pump impulsion (14).
  • The pump casing is completed by a cover (2), to which the pump intake (15) is welded.
  • The seal of the body-flange (1) and the cover (2) is achieved by an O-ring (8), located on the peripheral seat (1.1) of the body-flange (1).
  • The body-flange (1) has an inner seat (1.2) on which rests a cover-closure (3) that allows to couple different types of mechanical closures between this cover-closure (3) and the wheel (4, 5).
    [0023a] The cover-closure system (3) comprises two parts (29,30). The outer part (29) is coupled by screws (31) to the body of the pump (1), and the inner part (30) iscoupled to the mechanical closure, the two joined to each other by screws (32). The cover-closure (3) is also provided with a centering office (33).
  • Due to the functionality of the modular system, when it is applied to plumbing pumps the body-flange (1) and the cover (2) are joined by a clamp (6), while a blind nut (9) is inserted on the end of the shaft (13) of the wheel (4), preferably including an inner pressure washer (16) and an O-ring (17) to seal the shaft (13).
    [00024a] the clamp (6) is formed by two parts joined by grooved ends (19) and
    permanently attached at one of their ends by a ring (20) retained by a pin (21). On theother end is a part (22) that embraces and is inserted in the grooves (10) and is also retained by a pin (21), provided with a housing (23) for inserting a screw (24) that tightens the clamp (6).
  • In industrial application pumps, the body-flange (1) and the cover (2) are joined by screws (7) while the blind nut (9) preferably Includes a standard washer (18).
  • If the modular system is used for application as a plumbing pump, an O-ring (10) is provided between the motor casing (12) and the body flange (1) to prevent the entry of cleaning liquids in the motor.
    [00026a] The shaft is coupled by a conical bushing (25) coupled to a tightening part (26) retained by a nut (27) and a counter-nut (28) with a metal deflector (29) placed between the part (26) and the first screw (27).
  • The essence of this invention is not affected by variations in the materials, shape and size of the component elements, described in a nonlimiting manner that should allow its reproduction by an expert.

Claims (10)

  1. A centrifugal pump comprising an O-ring (8) providing the seal between the parts in contact with the fluid to be pumped (8), having a pump casing which is formed by a first piece, a body-flange (1), which is joined to a casing of a motor (12), the pump casing allowing passage of a shaft (13) of a wheel (4, 5) and including a part meant for the pump impulsion (14) and a second piece (2) to which the pump intake (15) is welded, characterized in that the body-flange (1) presents an inner seat (1.2) on which a cover-closure (3) rests, the cover-closure comprises two parts (29,30), an outer part (29) which is coupled by screws (31) to the body of the pump (1) and the inner part (30) which coupled to a mechanical closure, being both parts of said cover-closure joined by screws (32).
  2. A centrifugal pump according to claim 1, characterised in that the body-flange (1) and the cover (2) are joined by a clamp (6) when the system is applied to plumbing pumps.
  3. A centrifugal pump according to claim 2, characterised in that the clamp (6) is formed by two parts joined by grooved ends (19) and permanently attached at one of their ends by a ring (20) retained by a pin (21); on the other end is a part (22) that embraces and is inserted in the grooves (19) and is also retained by a pin (21), provided with a housing (23) for inserting a screw (24) that tightens the clamp (6).
  4. A centrifugal pump according to claim 1, characterised in that the body-flange (1) and the cover (2) are joined by screws (7) when the system is applied to industrial pumps.
  5. A centrifugal pump according to claim 1, characterised in that a blind nut (9) is inserted in the end of the shaft (13) of the wheel (4), preferably including an inner pressure washer (16) and an O-ring (17) for sealing the shaft (13) when the system is applied to plumbing pumps.
  6. A centrifugal pump according to claim 1, characterised in that a blind nut (9) is inserted in the end of the shaft (13) of the wheel (5), preferably including a standard washer (18) when the system is applied to plumbing pumps.
  7. A centrifugal pump according to claim 1, characterised in that between the casing of the motor (12) and the body-flange (1) there is an O-ring (10) to prevent the entry of cleaning liquids into the motor, when the system is applied to plumbing pumps.
  8. A centrifugal pump according to claim 1, characterised in that the wheel (4) is open in plumbing application pumps.
  9. A centrifugal pump according to claim 1, characterised in that the wheel (5) is semi-open in industrial application pumps.
  10. A centrifugal pumps according to claim 1, characterized in that the cover-closure (3) is provided with a centering office (33).
EP05381050A 2004-11-10 2005-11-07 Centrifugal pump Active EP1669611B1 (en)

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
EP1669611A1 EP1669611A1 (en) 2006-06-14
EP1669611B1 true EP1669611B1 (en) 2009-04-01

Family

ID=35589647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05381050A Active EP1669611B1 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720705A (en) * 2012-06-27 2012-10-10 合肥华升泵阀有限责任公司 Rotor assembling tool for large heavy-duty horizontal type multistage centrifugal pump

Families Citing this family (6)

* 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
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

Family Cites Families (9)

* 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
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
ES257344Y (en) * 1981-04-03 1983-01-01 SIMPLIFIED 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.
ES286465Y (en) * 1985-04-30 1986-10-01 Badosa Busquets Jose Ma. PERFECTED HOUSING FOR CENTRIFUGAL PUMPS
JP2690985B2 (en) * 1988-12-26 1997-12-17 株式会社荏原製作所 Casing for fluid equipment and fluid equipment using the same
US6164910A (en) * 1998-09-22 2000-12-26 Itt Manufacturing Enterprises, Inc. Housing assembly for a fluid-working device such as a rotary pump
ES1046823Y (en) * 2000-07-12 2001-07-01 Busquets Jose Maria Badosa BEARING FOR CENTRIFUGAL PUMPS, SEMI-OPEN STAR TYPE AND WITH DEFLECTOR DISC.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720705A (en) * 2012-06-27 2012-10-10 合肥华升泵阀有限责任公司 Rotor assembling tool for large heavy-duty horizontal type multistage centrifugal pump
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

Also Published As

Publication number Publication date
EP1669611A1 (en) 2006-06-14
ATE427431T1 (en) 2009-04-15
ES2263356B1 (en) 2007-11-16
ES2322813T3 (en) 2009-06-29
ES2263356A1 (en) 2006-12-01
DE602005013632D1 (en) 2009-05-14

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