US3631985A - Device for cleaning magnetic filters - Google Patents

Device for cleaning magnetic filters Download PDF

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Publication number
US3631985A
US3631985A US28301A US3631985DA US3631985A US 3631985 A US3631985 A US 3631985A US 28301 A US28301 A US 28301A US 3631985D A US3631985D A US 3631985DA US 3631985 A US3631985 A US 3631985A
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US
United States
Prior art keywords
magnetic
container
grate
container means
blade
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
US28301A
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English (en)
Inventor
Joachim Taeger
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Application granted granted Critical
Publication of US3631985A publication Critical patent/US3631985A/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

Definitions

  • the present invention relates to a device for cleaning magnetic filters. It has already been suggested to clean magnetic filters of ferromagnetic substances deposited on the magnetic parts of the filters by moving the magnets relative to the surrounding water at such a high speed that the magnetic deposits are torn off the magnetic parts of the filter. The torn off deposits can then by scavenging water be washed out from the magnetic filter. This method, however, has the drawback that considerable energy is required in order to rotate the rather heavy magnetic system at correspondingly high speeds.
  • the known method is carried out in a device in which within a pressure body there is provided a permanent magnet system on a rotatable shaft which permanent magnet system is at a standstill during normal operation so that the magnetic impurities in the water can deposit or collect on the filter.
  • a permanent magnet system on a rotatable shaft which permanent magnet system is at a standstill during normal operation so that the magnetic impurities in the water can deposit or collect on the filter.
  • the device according to the present invention comprises a plurality of magnetic systems arranged one above the other in spaced relationship to each other while between the individual magnetic systems propellers or blades are rotatably arranged which for purposes of cleaning the magnetic system are rotated at relatively high speed so as to impart upon the surrounding water such a speed that the ferromagnetic substances deposited on the magnetic system will be torn off from the latter and can be withdrawn from the filter by scavenging fluid.
  • the arrangement shown therein comprises a pressure resistant housing 1 having its lower portion provided with an intake 2 while its upper portion is provided with a discharge 3.
  • a plurality of magnetic grates 4 are so arranged that for purposes of servicing the filter, they can be removed individually from the housing 1.
  • propellers 5 are connected or keyed to a shaft 6 rotatably journaled in bearings 7, 8.
  • Shaft 6 is through a coupling 9 drivingly connected to a transmission 10 which in its turn is drivingly connected to an electric motor 11.
  • the bearing 8 is sealed toward the outside by a stuffing box seal 12.
  • an inlet 13 for scavenging or rising water which is necessary for cleaning the magnetic grates 4.
  • the water which is already in the housing 1 may be discharged through the discharge opening 14 and the discharge valve 15.
  • the water to be cleaned flows from the bottom in upward direction through the pressure resistant housi n l as indicated by the arrows. Ferromagnetic parts or partlc es w
  • the propellers 5 are normally at a standstill.
  • the water supply is first shutoff and scavenging or cleaning water is admitted through the intake 2 while their propellers 5 are rotated by the motor 11 through the intervention of the transmission 10, the coupling 9 and the shaft 6. In this way the propellers create such a strong flow that the deposits are torn off from the magnetic grates and are washed out by the rinsing water.
  • the blades of the propellers are expediently so designed that their angle of incident or pitch may be adjusted. It is furthermore advantageous to arrange the propellers in pairs and so to design the same that the propellers of each pair will run counter currently so that a strong turbulent flow will be produced. Moreover, the pitch angles of the individual propeller blades may be different. in this way, in addition to creating turbulence, a slow flow to the discharge will now be realized.
  • the variation of the pitch angle of the propellers may be effected in any standard manner, at it is known, for instance, in connection with airplane propellers.
  • a magnetic filtering device which includes longitudinally extending container means having fluid inlet and outlet means at oppositely located end portions of said container means, a plurality of magnetic grate means serially arranged in said container means and spaced from each other in the longitudinal direction of said container means, a plurality of rotary blade means interposed between said magnetic grate means, and means operatively connected to said blade means for selectively rotating the same to produce a strong fluid flow along the surfaces of said grate means.
  • a device in which all of said rotary blade means are keyed to a common shaft extending in the longitudinal direction of said container means and substantially coaxial therewith.
  • each two successive blade means are rotatable in counter current direction with regard to each other for creating turbulence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US28301A 1969-05-03 1970-04-14 Device for cleaning magnetic filters Expired - Lifetime US3631985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691922635 DE1922635B1 (de) 1969-05-03 1969-05-03 Vorrichtung zum Reinigen von Magnetfiltern

Publications (1)

Publication Number Publication Date
US3631985A true US3631985A (en) 1972-01-04

Family

ID=5733166

Family Applications (1)

Application Number Title Priority Date Filing Date
US28301A Expired - Lifetime US3631985A (en) 1969-05-03 1970-04-14 Device for cleaning magnetic filters

Country Status (6)

Country Link
US (1) US3631985A (nl)
AT (1) AT299255B (nl)
DE (1) DE1922635B1 (nl)
FR (1) FR2047120A5 (nl)
GB (1) GB1232948A (nl)
NL (1) NL7005841A (nl)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420568A1 (de) * 1973-05-02 1974-11-21 Water Technology Service Inc Fluessigkeitsbehandlungsgeraet
US4422934A (en) * 1982-04-22 1983-12-27 Debney-Spencer Industries Ltd. Magnetic device for the treatment of calcareous fluids
US6077333A (en) * 1995-10-16 2000-06-20 Wolfs; Paulus Device for removing magnetizable parts
US20060027504A1 (en) * 2004-07-23 2006-02-09 Takeshi Nakashima Method to produce the activated liquid which contains micro gas bubbles and methods realized by the use of the liquid
US20060076277A1 (en) * 2002-02-22 2006-04-13 Regents Of The University Of Minnesota Separation apparatus and methods
US20210394093A1 (en) * 2019-08-01 2021-12-23 Yanshan University Consumption-free high-efficiency filter
US20220001310A1 (en) * 2018-11-14 2022-01-06 Bollfilter Nordic Aps Filter candle and method for operating such filter candle
US12083526B1 (en) * 2023-03-13 2024-09-10 Namon A. Nassef Waste stream homogenizing apparatus and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490252A (en) * 1976-04-01 1984-12-25 Brigante Miguel F Electrostatic scale control apparatus for feed water having rotating helix responsive to water flow rate
CN110860945B (zh) * 2019-11-29 2020-08-18 重庆宏钢数控机床有限公司 带润滑油回油槽、集油盒的平导轨斜床身

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US969364A (en) * 1910-02-15 1910-09-06 Lewis T Grootenhuis Revolving self-cleaning screen.
US3326374A (en) * 1962-07-25 1967-06-20 Quebec Smelting & Refining Ltd Magnetic separator with washing and scouring means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1277488B (de) * 1967-06-08 1968-09-12 Siemens Ag Einrichtung zur elektromagnetischen Entfernung von Eisenoxyden aus Fluessigkeit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US969364A (en) * 1910-02-15 1910-09-06 Lewis T Grootenhuis Revolving self-cleaning screen.
US3326374A (en) * 1962-07-25 1967-06-20 Quebec Smelting & Refining Ltd Magnetic separator with washing and scouring means

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420568A1 (de) * 1973-05-02 1974-11-21 Water Technology Service Inc Fluessigkeitsbehandlungsgeraet
US4422934A (en) * 1982-04-22 1983-12-27 Debney-Spencer Industries Ltd. Magnetic device for the treatment of calcareous fluids
US6077333A (en) * 1995-10-16 2000-06-20 Wolfs; Paulus Device for removing magnetizable parts
US20060076277A1 (en) * 2002-02-22 2006-04-13 Regents Of The University Of Minnesota Separation apparatus and methods
US20060027504A1 (en) * 2004-07-23 2006-02-09 Takeshi Nakashima Method to produce the activated liquid which contains micro gas bubbles and methods realized by the use of the liquid
US8097166B2 (en) 2004-07-23 2012-01-17 Takeshi Nakashima Method to produce the activated liquid which contains micro gas bubbles and methods realized by the use of the liquid
US20220001310A1 (en) * 2018-11-14 2022-01-06 Bollfilter Nordic Aps Filter candle and method for operating such filter candle
US11872507B2 (en) * 2018-11-14 2024-01-16 Bollfilter Nordic Aps Filter candle and method for operating such filter candle
US20210394093A1 (en) * 2019-08-01 2021-12-23 Yanshan University Consumption-free high-efficiency filter
US11845023B2 (en) * 2019-08-01 2023-12-19 Yanshan University Filter with passive-rotation filter flements
US12083526B1 (en) * 2023-03-13 2024-09-10 Namon A. Nassef Waste stream homogenizing apparatus and method

Also Published As

Publication number Publication date
NL7005841A (nl) 1970-11-05
AT299255B (de) 1972-06-12
DE1922635B1 (de) 1970-07-30
FR2047120A5 (nl) 1971-03-12
GB1232948A (nl) 1971-05-26

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