US3355024A - Magnetic filter - Google Patents

Magnetic filter Download PDF

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Publication number
US3355024A
US3355024A US426137A US42613765A US3355024A US 3355024 A US3355024 A US 3355024A US 426137 A US426137 A US 426137A US 42613765 A US42613765 A US 42613765A US 3355024 A US3355024 A US 3355024A
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US
United States
Prior art keywords
discs
rings
stack
magnetic
filter
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
US426137A
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English (en)
Inventor
Skoyles Derek Robert
Tyrrell Arthur James
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3355024A publication Critical patent/US3355024A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/06—Filters making use of electricity or magnetism
    • 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

Definitions

  • the present invention relates to a magnetic filter for filtering ferromagnetic particles from a fluid, for example oil circulating in an internal combustion engine.
  • the transmission oil is combined with the engine oil and there is consequently a need for a magnetic filter which is small and which may be inserted in the oil suction line without leading to a significant pressure drop. It is essential that the filter should be efficient when the oil flows is fast at maximum engine speeds since otherwise the flow of oil may cause cavitation.
  • the filter must be efiicient at maximum flow to hold trapped ferromagnetic material against the flow of oil,
  • a magnetic filter for removing ferromagnetic particles from a fluid comprises a plurality of spaced annular discs of soft ferromagnetic material, rings of permanent magnetic material interposed between the discs, and means for axially clamping the discs and the rings together, wherein the discs and the rings are arranged to be substantially concentrical withone another wherein the outer diameter of the rings is smaller than the outer diameter of the discs, and wherein the rings are magnetized axially in directions such that adjacent discs form magnetic poles of opposite polarity.
  • the inner diameter of the rings is larger than the inner diameter of the discs.
  • the discs of soft ferromagnetic material may be provided with lugs which locate the discs and the rings of permanent magnetic material concentric with one another.
  • the discs and permanent magnets may be held concentric with one another by means of non-magnetic bolts which pass through apertures in the discs and which bear against the sides of the magnetic rings.
  • the permanent magnets may be made of a ferrite material, for example that sold under the trade name Magnadur.
  • FIGURE 1 is a sectional view of a first embodiment
  • FIGURE 2 is a view along the line H-II of FIG- URE 1,
  • FIGURE 3 is a sectional view of a and FIGURE 4 is a view along the line IV-IV of FIG- URE 3.
  • a magnetic filter is located within a housing 1, preferably of non-magnetic material, by any suitable means, not shown.
  • the filter comprises a number of apertured soft ferromagnetic discs 2 spaced apart by rings 3 of permanent magnetic material.
  • the rings 3 are magnetized parallel to their axes in an alternating manner as indicated by the arrows 4.
  • the ends of discs 2 are shaped as shown in FIGURE 2 so that a bolt 5, preferably of non-magnetic material, may serve to clamp the whole assembly together.
  • the discs 2 are provided with lugs 6 which are bent over the rings 3 and which serve to maintain the discs and the rings in a substantially concentric arrangement.
  • URES 3 and 4 is similar to that of the filter described with reference to FIGURES 1 and 2.
  • corresponding reference numerals have been used for parts corresponding to those shown in FIGURES 1 and 2.
  • the discs 2 and the rings 3 are located substantially concentric with one another by means of bolts 7, preferably of non-magnetic material, which also serve to clamp the arrangement longitudinally.
  • rods or rivets may be used instead of the bolts 7.
  • a hollow sleeve preferably of nonmagnetic material such as aluminum, may be inserted through the central bore, the ends of the sleeve being turned over to clamp the assembly longitudinally.
  • the assembly may then be secured in the housing by means of a bolt passing through the sleeve and screwed into a suitable point on the housing. With this arrangement, the fluid will only flow along the outside of the rings and discs and not along the inside.
  • a magnetic filter for filtering ferromagnetic material from a flowing liquid comprising a plurality of spaced annular discs of soft ferromagnetic material, a plurality of rings of permanent magnetic material, each ring being interposed between spaced adjacent annular discs to form a stack, and means for axially clamping said discs and rings together, the outer diameter of each of said rings being smaller than the outer diameter of each of said discs, and wherein said rings magnetize said discs axially in directions such that each disc is of a magnetic polarity opposite the adjacent disc, each of the discs in said stack being provided with lugs projecting in opposite directions to thereby clamp said rings on either side thereof and serve to maintain the discs and rings in a substantially concentric stacked arrangement, and whereby a flow path is formed down the center of said stack and around said stack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • General Details Of Gearings (AREA)
  • Filtration Of Liquid (AREA)
US426137A 1964-02-03 1965-01-18 Magnetic filter Expired - Lifetime US3355024A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4460/64A GB1055134A (en) 1964-02-03 1964-02-03 Improvements in and relating to magnetic filters

Publications (1)

Publication Number Publication Date
US3355024A true US3355024A (en) 1967-11-28

Family

ID=9777592

Family Applications (1)

Application Number Title Priority Date Filing Date
US426137A Expired - Lifetime US3355024A (en) 1964-02-03 1965-01-18 Magnetic filter

Country Status (8)

Country Link
US (1) US3355024A (da)
AT (1) AT251000B (da)
BE (1) BE659136A (da)
CH (1) CH454092A (da)
DE (2) DE1974719U (da)
FR (1) FR1423371A (da)
GB (1) GB1055134A (da)
NL (1) NL6501245A (da)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157963A (en) * 1976-04-09 1979-06-12 Tengam Company Limited Magnetic device for treatment of calcareous liquids
US4512289A (en) * 1983-12-13 1985-04-23 State Industries, Inc. Water heater with combination magnetic and agitator means
US5092987A (en) * 1984-12-05 1992-03-03 Akademi Der Wissenschaften Der Ddr Matrix for magnetic separators
US5248437A (en) * 1986-11-19 1993-09-28 Forrest Scientific Research Limited Method for the magnetic inhibition of protista
US20070018764A1 (en) * 2005-07-19 2007-01-25 Analisi Tecnologica Innovadora Per A Processos Device and method for separating magnetic particles
US20120262260A1 (en) * 2011-04-18 2012-10-18 Exact Sciences Corporation Magnetic microparticle localization device
US8292084B2 (en) 2009-10-28 2012-10-23 Magnetation, Inc. Magnetic separator
US8708152B2 (en) 2011-04-20 2014-04-29 Magnetation, Inc. Iron ore separation device
US9517473B2 (en) 2012-11-27 2016-12-13 Bay6 Solutions Inc. Magnetic filter for a fluid port

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2149764A (en) * 1937-06-10 1939-03-07 Bendix Aviat Corp Magnetic filter
US2678729A (en) * 1950-12-12 1954-05-18 Spodig Heinrich Automatically operative magnetic separator
US2705563A (en) * 1952-11-12 1955-04-05 Albert E Ide Oil filter cartridge
US2772778A (en) * 1954-04-16 1956-12-04 Indiana Commercial Filters Cor Universal magnetic clarifier
GB765495A (en) * 1954-11-08 1957-01-09 Philips Electrical Ind Ltd Improvements in or relating to magnetic separators
US3062376A (en) * 1958-04-18 1962-11-06 Philips Corp Magnetic separator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE957254C (de) * 1949-05-13 1957-01-31 Spodig Heinrich OElsumpffilter, insbesondere fuer Brennkraftmaschinen
DE1091688B (de) * 1955-10-10 1960-10-27 Faudi Feinbau G M B H Magnetfilter fuer Fluessigkeiten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2149764A (en) * 1937-06-10 1939-03-07 Bendix Aviat Corp Magnetic filter
US2678729A (en) * 1950-12-12 1954-05-18 Spodig Heinrich Automatically operative magnetic separator
US2705563A (en) * 1952-11-12 1955-04-05 Albert E Ide Oil filter cartridge
US2772778A (en) * 1954-04-16 1956-12-04 Indiana Commercial Filters Cor Universal magnetic clarifier
GB765495A (en) * 1954-11-08 1957-01-09 Philips Electrical Ind Ltd Improvements in or relating to magnetic separators
US3062376A (en) * 1958-04-18 1962-11-06 Philips Corp Magnetic separator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157963A (en) * 1976-04-09 1979-06-12 Tengam Company Limited Magnetic device for treatment of calcareous liquids
US4512289A (en) * 1983-12-13 1985-04-23 State Industries, Inc. Water heater with combination magnetic and agitator means
US5092987A (en) * 1984-12-05 1992-03-03 Akademi Der Wissenschaften Der Ddr Matrix for magnetic separators
US5248437A (en) * 1986-11-19 1993-09-28 Forrest Scientific Research Limited Method for the magnetic inhibition of protista
US20070018764A1 (en) * 2005-07-19 2007-01-25 Analisi Tecnologica Innovadora Per A Processos Device and method for separating magnetic particles
US20140166584A1 (en) * 2005-07-19 2014-06-19 Sepmag Tecnologies, S.L. Device and method for separating magnetic particles
US8292084B2 (en) 2009-10-28 2012-10-23 Magnetation, Inc. Magnetic separator
US8777015B2 (en) 2009-10-28 2014-07-15 Magnetation, Inc. Magnetic separator
US20120262260A1 (en) * 2011-04-18 2012-10-18 Exact Sciences Corporation Magnetic microparticle localization device
US8708152B2 (en) 2011-04-20 2014-04-29 Magnetation, Inc. Iron ore separation device
US9517473B2 (en) 2012-11-27 2016-12-13 Bay6 Solutions Inc. Magnetic filter for a fluid port

Also Published As

Publication number Publication date
DE1220954B (de) 1966-07-14
DE1974719U (de) 1967-12-14
CH454092A (de) 1968-04-15
NL6501245A (da) 1965-08-04
BE659136A (da) 1965-08-02
AT251000B (de) 1966-12-12
GB1055134A (en) 1967-01-18
FR1423371A (fr) 1965-01-03

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