WO2010020793A1 - Pump arrangement - Google Patents

Pump arrangement Download PDF

Info

Publication number
WO2010020793A1
WO2010020793A1 PCT/GB2009/002052 GB2009002052W WO2010020793A1 WO 2010020793 A1 WO2010020793 A1 WO 2010020793A1 GB 2009002052 W GB2009002052 W GB 2009002052W WO 2010020793 A1 WO2010020793 A1 WO 2010020793A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
separator
arrangement
pump arrangement
fluid
Prior art date
Application number
PCT/GB2009/002052
Other languages
French (fr)
Inventor
Christopher Adey
Original Assignee
Christopher Adey
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 Christopher Adey filed Critical Christopher Adey
Publication of WO2010020793A1 publication Critical patent/WO2010020793A1/en

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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid

Definitions

  • This invention relates to a pump arrangement, and in particular to a pump arrangement suitable for use in a heating system, for example a domestic space heating and/or hot water system.
  • Corrosion of, for example, the interior of radiators can result in the water being pumped around the circuit including a significant quantity of ferrous particles which can impair the performance of, for example, the pump or boiler, possibly causing wear thereof which, obviously, is undesirable. Also, the particles may tend to collect in certain parts of the circuit causing a partial blockage or restriction to flow therein which, again, negatively impacts upon the performance of the system. Other particulates may also become entrained with the flow of water. For example, limescale particles may flow around the circuit causing similar problems.
  • a pump arrangement comprising a pump housing having a fluid inlet and a fluid outlet, a pump carried by the pump housing, and a separator carried by the pump housing, the pump serving, in use, to pump fluid between the fluid inlet and the fluid outlet through the separator.
  • the pump is preferably an electrically powered pump, conveniently in the form of a centrifugal pump.
  • a tagential output of the pump is connected to an input of the separator.
  • the separator preferably comprises a magnetic separator.
  • a mechanical filter element is also provided within the separator so that non-ferrous particles can be separated from the flow of fluid by the separator.
  • Such an arrangement is advantageous in that replacement of a conventional pump with a pump arrangement in accordance with the invention will automatically introduce a separator into the circuit without having to undertake a separate fitting operation. Further, the arrangement is fairly compact so will often be easy to accommodate in the space usually occupied by the pump.
  • Figure 1 is a perspective view illustrating a pump arrangement
  • Figures 2, 3 and 4 are top plan, bottom and side views of the pump arrangement.
  • Figure 5 is a diagrammatic view illustrating operation of the pump arrangement.
  • the pump arrangement illustrated in the accompanying drawings is intended for use in a domestic central heating and hot water system.
  • a domestic central heating and hot water system includes a fluid circuit through which fluid is pumped by the pump arrangement between a boiler unit and a series of radiators. Fluid is also pumped through a heat exchanging coil of a domestic hot water cylinder.
  • Such arrangements are well known and will not be described in further detail, and are not illustrated.
  • the pump arrangement illustrated in the accompanying drawings is intended for use as the pump in such a heating system.
  • the pump arrangement illustrated in the accompanying drawings comprises a pump housing 10 having an inlet 12 and an outlet 14, each of which is of screw- threaded form and is arranged to be connected to pipework (not shown) forming part of the fluid circuit.
  • the connectors used to connect the pump housing 10 to the pipework are of conventional form and, when the pump arrangement is being used to replace an existing pump, will usually be the existing connectors.
  • the pump housing 10 incorporates internal passages 16, 18, 20. A first one of the passages 16 connects the inlet 12 to a pump inlet 22. A second one of the passages 18 connects a pump outlet 24 to a separator inlet 26. A third one of the passages 20 connects the separator outlet 28 to the outlet 14.
  • the pump housing 10 is conveniently of moulded plastics form, for example of injection moulded form, but it will be appreciated that this need not always be the case and that other materials and/or manufacturing techniques may be used.
  • an electrically powered centrifugal pump 30 Bolted or otherwise secured to the pump housing 10 is an electrically powered centrifugal pump 30.
  • the precise nature of the pump 30 is not of great relevance to the operation of the invention, other than to note that the pump 30 includes an electrically powered motor 32 operable to drive an impeller disc 34 for rotation about its axis.
  • the pump inlet 22 opens substantially onto a central part of the impeller disc 34 and, in use, rotation of the impeller disc 34 will urge water to flow from the pump inlet 22 towards the pump outlet 24, drawing fluid along the passage 16 as denoted by arrow 36, and driving fluid along the passage 18 towards the separator inlet 26 as denoted by arrow 38.
  • a separator 40 having an inlet tube 42 connected to the separator inlet 26 and opening into a separator chamber 44 within a cup 46.
  • the separator outlet 28 also opens into the chamber 44 but, unlike the separator inlet 26, no tube 42 is provided with the result that water flowing from the separator inlet 26 to the separator outlet 28 passes around and along the magnets 48, ferrous particles entrained with the flow of water tending to be separated from the flow adhering to the magnets 48 due to the magnet attraction therebetween with the result that the water exiting the outlet 14 is of low ferrous particle contact.
  • a mesh or fibre screen may also be located within the chamber 44, serving as a mechanical filter to trap particles which may otherwise have passed through the separator.
  • the invention provides a convenient way of introducing a separator into a circuit.
  • the unit is compact and can usually be accommodated in the space previously occupied by the pump.
  • the compactness of the unit is enhanced by taking the outlet flow from the pump and porting this to the separator. Further, often, little or no alteration to the existing pipework will be necessary.
  • the separator design is compact and provides an efficient way of collecting particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A pump arrangement includes a centrifugal pump (30) and a magnetic separator (40) carried by a pump housing. Water flows through an inlet (12), through the pump (30) and subsequently into the separator and out through an outlet (14). A mesh or fibre screen may also be located within the separator (40) for filtering particles other than ferrous particles.

Description

Pump Arrangement
This invention relates to a pump arrangement, and in particular to a pump arrangement suitable for use in a heating system, for example a domestic space heating and/or hot water system.
It is usual to provide an electrically powered pump in a domestic hot water and/or space heating system to pump water around a circuit including a boiler, for example of gas or oil fired form, and a network of radiators and/or heat exchanging coil of a hot water cylinder .
Corrosion of, for example, the interior of radiators can result in the water being pumped around the circuit including a significant quantity of ferrous particles which can impair the performance of, for example, the pump or boiler, possibly causing wear thereof which, obviously, is undesirable. Also, the particles may tend to collect in certain parts of the circuit causing a partial blockage or restriction to flow therein which, again, negatively impacts upon the performance of the system. Other particulates may also become entrained with the flow of water. For example, limescale particles may flow around the circuit causing similar problems.
It is known to fit filters, separators or collectors into heating system circuits to collect such particulates. For example, the use of magnetic separators to collect ferrous particles is known. Although such filters, separators or collectors often function well when fitted, the addition of such components to an existing circuit involves identifying a suitable location, breaking the circuit and fitting the component, and these operations are fairly time consuming.
According to the present invention there is provided a pump arrangement comprising a pump housing having a fluid inlet and a fluid outlet, a pump carried by the pump housing, and a separator carried by the pump housing, the pump serving, in use, to pump fluid between the fluid inlet and the fluid outlet through the separator.
The pump is preferably an electrically powered pump, conveniently in the form of a centrifugal pump. Preferably a tagential output of the pump is connected to an input of the separator.
The separator preferably comprises a magnetic separator. Preferably a mechanical filter element is also provided within the separator so that non-ferrous particles can be separated from the flow of fluid by the separator.
Such an arrangement is advantageous in that replacement of a conventional pump with a pump arrangement in accordance with the invention will automatically introduce a separator into the circuit without having to undertake a separate fitting operation. Further, the arrangement is fairly compact so will often be easy to accommodate in the space usually occupied by the pump.
The invention will further be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a perspective view illustrating a pump arrangement;
Figures 2, 3 and 4 are top plan, bottom and side views of the pump arrangement; and
Figure 5 is a diagrammatic view illustrating operation of the pump arrangement.
The pump arrangement illustrated in the accompanying drawings is intended for use in a domestic central heating and hot water system. As outlined hereinbefore, such a system includes a fluid circuit through which fluid is pumped by the pump arrangement between a boiler unit and a series of radiators. Fluid is also pumped through a heat exchanging coil of a domestic hot water cylinder. Such arrangements are well known and will not be described in further detail, and are not illustrated. The pump arrangement illustrated in the accompanying drawings is intended for use as the pump in such a heating system.
The pump arrangement illustrated in the accompanying drawings comprises a pump housing 10 having an inlet 12 and an outlet 14, each of which is of screw- threaded form and is arranged to be connected to pipework (not shown) forming part of the fluid circuit. The connectors used to connect the pump housing 10 to the pipework are of conventional form and, when the pump arrangement is being used to replace an existing pump, will usually be the existing connectors. The pump housing 10 incorporates internal passages 16, 18, 20. A first one of the passages 16 connects the inlet 12 to a pump inlet 22. A second one of the passages 18 connects a pump outlet 24 to a separator inlet 26. A third one of the passages 20 connects the separator outlet 28 to the outlet 14.
The pump housing 10 is conveniently of moulded plastics form, for example of injection moulded form, but it will be appreciated that this need not always be the case and that other materials and/or manufacturing techniques may be used.
Bolted or otherwise secured to the pump housing 10 is an electrically powered centrifugal pump 30. The precise nature of the pump 30 is not of great relevance to the operation of the invention, other than to note that the pump 30 includes an electrically powered motor 32 operable to drive an impeller disc 34 for rotation about its axis. The pump inlet 22 opens substantially onto a central part of the impeller disc 34 and, in use, rotation of the impeller disc 34 will urge water to flow from the pump inlet 22 towards the pump outlet 24, drawing fluid along the passage 16 as denoted by arrow 36, and driving fluid along the passage 18 towards the separator inlet 26 as denoted by arrow 38.
Also secured to the pump housing 10 is a separator 40 having an inlet tube 42 connected to the separator inlet 26 and opening into a separator chamber 44 within a cup 46. Located within the chamber 44, and bolted to the pump housing 10, are a pair of separator magnets 48. The separator outlet 28 also opens into the chamber 44 but, unlike the separator inlet 26, no tube 42 is provided with the result that water flowing from the separator inlet 26 to the separator outlet 28 passes around and along the magnets 48, ferrous particles entrained with the flow of water tending to be separated from the flow adhering to the magnets 48 due to the magnet attraction therebetween with the result that the water exiting the outlet 14 is of low ferrous particle contact.
Although not shown, if desired a mesh or fibre screen may also be located within the chamber 44, serving as a mechanical filter to trap particles which may otherwise have passed through the separator.
Over time, particles will build up within the chamber 44 and the chamber 44 can be emptied by removing the cap 46 from the remainder of the separator (after having first closed valves associated with the connectors), wiping the collected particles from the magnets 48 and rinsing or replacing the screen.
It will be appreciated that the invention provides a convenient way of introducing a separator into a circuit. The unit is compact and can usually be accommodated in the space previously occupied by the pump. The compactness of the unit is enhanced by taking the outlet flow from the pump and porting this to the separator. Further, often, little or no alteration to the existing pipework will be necessary. The separator design is compact and provides an efficient way of collecting particles.
It will be appreciated that a range of modifications to the arrangement described hereinbefore may be made without departing from the scope of the invention.

Claims

1. A pump arrangement comprising a pump housing having a fluid inlet and a fluid outlet, a pump carried by the pump housing, and a separator carried by the pump housing, the pump serving, in use, to pump fluid between the fluid inlet and fluid outlet through the separator.
2. A pump arrangement as claimed in claim 1, in which the pump is an electrically powered centrifugal pump.
3. A pump arrangement as claimed in claim 1 or claim 2, in which a tangential output of the pump is connected to an input of the separator.
4. A pump arrangement as claimed in any preceding claim, in which the separator is a magnetic separator.
5. A pump arrangement as claimed in any preceding claim, in which a mechanical filter element is also provided within separator for filtering non-ferrous particles.
6. A pump arrangement as claimed in any preceding claim, in which the separator includes a removable cap allowing access for cleaning of the filter.
7. A pump arrangement substantially as described herein with reference to and as illustrated in Figures 1 to 5 of the accompanying drawings.
PCT/GB2009/002052 2008-08-22 2009-08-21 Pump arrangement WO2010020793A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0815358A GB2462685A (en) 2008-08-22 2008-08-22 Pump arrangement with a centrifugal pump and magnetic separator
GB0815358.7 2008-08-22

Publications (1)

Publication Number Publication Date
WO2010020793A1 true WO2010020793A1 (en) 2010-02-25

Family

ID=39846695

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/002052 WO2010020793A1 (en) 2008-08-22 2009-08-21 Pump arrangement

Country Status (2)

Country Link
GB (1) GB2462685A (en)
WO (1) WO2010020793A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276824A (en) * 1939-09-23 1942-03-17 Goulds Pumps Combined pump and centrifugal separator
US3397135A (en) * 1964-09-21 1968-08-13 Julius L Englesberg Integral pump and filter assembly including electrode means
US4130488A (en) * 1976-09-03 1978-12-19 Speck-Pumpen Daniel Speck & Sohni Device for cleaning and circulating a liquid
US4898513A (en) * 1989-06-05 1990-02-06 Mobil Oil Corp. Circulating water system and sump pump strainer apparatus
EP1353074A2 (en) * 2002-04-12 2003-10-15 Wilo Ag Centrifugal pump with integrated magnetic filter
DE202005010765U1 (en) * 2005-07-08 2005-09-29 Ballan Ökotechnik GmbH Combination consists of device for separating of foreign bodies from fluid, with outlet opening pointing upwards, and displacement pump has combined lift and swivel system by which it can be lifted from separating device
US20060196655A1 (en) * 2005-03-03 2006-09-07 Wood Group Esp, Inc. Labyrinth seal for pumping system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002624A (en) * 1958-01-02 1961-10-03 Hollingshead Corp Combination pump and filter for recirculating liquid systems
US4161448A (en) * 1978-02-21 1979-07-17 Kobe, Inc. Combined separator and pump with dirty phase concentrator
DE29909100U1 (en) * 1999-05-25 1999-08-12 Arge Meibes Pleuger Pipe arrangement with filter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276824A (en) * 1939-09-23 1942-03-17 Goulds Pumps Combined pump and centrifugal separator
US3397135A (en) * 1964-09-21 1968-08-13 Julius L Englesberg Integral pump and filter assembly including electrode means
US4130488A (en) * 1976-09-03 1978-12-19 Speck-Pumpen Daniel Speck & Sohni Device for cleaning and circulating a liquid
US4898513A (en) * 1989-06-05 1990-02-06 Mobil Oil Corp. Circulating water system and sump pump strainer apparatus
EP1353074A2 (en) * 2002-04-12 2003-10-15 Wilo Ag Centrifugal pump with integrated magnetic filter
US20060196655A1 (en) * 2005-03-03 2006-09-07 Wood Group Esp, Inc. Labyrinth seal for pumping system
DE202005010765U1 (en) * 2005-07-08 2005-09-29 Ballan Ökotechnik GmbH Combination consists of device for separating of foreign bodies from fluid, with outlet opening pointing upwards, and displacement pump has combined lift and swivel system by which it can be lifted from separating device

Also Published As

Publication number Publication date
GB0815358D0 (en) 2008-10-01
GB2462685A (en) 2010-02-24

Similar Documents

Publication Publication Date Title
JP5707378B2 (en) Lubricant side stream cleaning device
US4312751A (en) Centrifugal water separator
CN214972283U (en) Filter and hydraulic flushing device comprising same
KR20190017023A (en) A filtration system for filtering oil for marine machinery, especially marine engines
CN102345542A (en) Spiral gasoline filter
CN202300754U (en) Spiral gasoline filter
CN101294969A (en) Flue gas monitoring instrument pipe line with single pump implementing gas production, cleaning, drainage and back flushing
CN115173244A (en) Industrial electrical equipment control cabinet with dust removal function
CN214693835U (en) Sludge separating pump
CN212359899U (en) Filter with self-cleaning function
US10337393B2 (en) Dirt trap as a functional module in the impeller of a coolant pump
CN113356960A (en) Oil filter capable of automatically cleaning filter paper
WO2010020793A1 (en) Pump arrangement
CN2817950Y (en) Self-cleaning filter
EP1379786B1 (en) Screw compressor unit with incorporated oil cooling
CN102776061A (en) Sump oil vibration filter vacuum oil purifier
AU7305591A (en) Centrifugal pump lubricant strainer system
CN112408611A (en) Water purification device, water purification system and water purification method
CN203515891U (en) Fuel filter
RU170204U1 (en) SELF-CLEANING FILTER
EP3831458A1 (en) Improved water filter
CN113237255A (en) Refrigerant is with purifying appearance
CN108472565A (en) There are two the filter elements of filter medium for tool
CN112811773A (en) Sludge separation pump and use method thereof
GB2395144A (en) A straining device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09784989

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09784989

Country of ref document: EP

Kind code of ref document: A1