US3695448A - Device for separating liquid from a slurry - Google Patents

Device for separating liquid from a slurry Download PDF

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Publication number
US3695448A
US3695448A US23553A US3695448DA US3695448A US 3695448 A US3695448 A US 3695448A US 23553 A US23553 A US 23553A US 3695448D A US3695448D A US 3695448DA US 3695448 A US3695448 A US 3695448A
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US
United States
Prior art keywords
drum
slurry
wall
screw
separating liquid
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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
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US23553A
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English (en)
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Rolf Ingvar Johansson
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Individual
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Individual
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Publication of US3695448A publication Critical patent/US3695448A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp

Definitions

  • ABSTRACT A device for separating liquid from a slurry having a [52] US. Cl. ..210/394, 209/296, 210/403, perforated rotatably driven drum into which the water 210/405 slurry mixture is introduced and fed along the length [51] Int.
  • the present invention relates to a device for efficiently separating a liquid from a slurry containing solid or semi-solid particles.
  • a slurry containing solid or semi-solid particles are used for instance in the paper industry where the paper pulp and certain waste products are conveyed in pipes or ducts in the form of a water slurry.
  • the invention is also applicable in machine tools for separating the cooling liquid from particles such as chips and the like, which are removed from a work piece during machining in order to avoid that suchvparticles otherwise would clog the cooling liquid conduits.
  • the invention more specifically relates to a separation device which comprises a rotatable elongated drum, the wall of which is provided with perforations and wherein there is provided a feed screw device for feeding in the longitudinal direction of the, drum a slurry introduced into the drum at one end thereof and feeding out the dewatered pulp at the opposite end of the drum.
  • the invention is essentially characterized by the feeding mechanism comprising an interspaced feed screw assembly, the spaces between each screw portion forming a number of feedless zones inside the drum.
  • FIG. 1 is a longitudinal cross section through the drum
  • FIG. 2 is a rear end view of the drum as seen from the left in FIG. 1.
  • the digit 1 indicates a perforated cylindrical wall of a drum the portion of which indicated nearest to the input end on the left of the FIG. I being provided with a number of relatively small perforations, while the portion located nearest to the outlet end is provided with larger perforations as is evident from FIG. 1.
  • the drum is designed to rotate in the direction indicated with the arrow marked in FIG. 2. Said rotation movement is provided by a driving motor 2 (marked in FIG. 2), which by means of a pinion gear 3 engages the toothing of a gear rim provided on one end portion 4 of the drum.
  • the said end portion 4 of the drum is provided with a central opening 5 through which the end portion of a supply feeding tube 6 projects into the interior of the drum.
  • the outlet end portion of the feeding tube 6 is bent in a direction towards the wall 1.
  • Mechanisms in the interior of the drum, serving the purpose of feeding the slurry through the drum towards its outlet end, are indicated with 7-13.
  • the combination of said feeding mechanisms form an interspaced screw assembly arranged in the interior of the drum, said assembly exhibiting several interruptions in order to create a number of feedless zones.
  • the feed screw can be designed in a different manner than the one illustrated here, but the design shown has been found to function very efficiently.
  • the feed screw comprises a number of screw flanges fastened to the inner side of the wall 1 of the drum, of which flanges the ones indicated with 7, 10, 11, 12 and 13 together form one half of one pitch, while the flange 8 describes a complete pitch.
  • the flanges 7, 8 and 10 during the rotation movement of the drum strive to feed the slurry in a direction from the supply tube 6,
  • the digit9 indicates a driving plate.
  • the drum is carried by a number of supporting rollers 14.
  • An additional supporting roller 15 is bearing against the end portion 4 of the drum in order to prevent the drum from displacing itself to the left according to FIG. 1.
  • the drum can be given an inclination so that by way of example it will occupy the position indicated by dashed and dotted lines in FIG. 1.
  • a trough 16 for collecting the liquid separated from the slurry and a tube 17 has an orifice in the bottom of the trough in order to discharge said liquid.
  • a cylindrical brush 18 is mounted outside the drum, which brush is lying against the wall of the drum and is driven by the same in the direction indicated by an arrow in FIG. 2.
  • the hairs of the brush are caused to penetrate into the perforations and keep them open.
  • Their cleansing action can be further improved by a flushing liquid being introduced into the hub of the brush for example via a rotating coupling.
  • the hub is provided with a number of openings, through which the liquid will be sprayed against the wall of the drum.
  • a protecting plate 19 is designed to take up the liquid, which from the supply tube 6 is splashed out through the perforations of the wall 1 of the drum. In consideration of this splashing action it is convenient that the outlet portion of the supply tube 6 is pointing in a direction towards a place of the wall of the drum being located somewhat lower than the brush 18. Via an inclined ramp 20 the dewatered pulp fed out of the drum is moved down to a conveyor device or similar, not shown.
  • the dewatering operation in the drum takes place in the following manner.
  • the slurry is pumped into the dewatering drum via the input tube 6 and is thrown against the inner side of the wall of the drum thereby cleansing said wall.
  • the flange 7 is designed to prevent slurry from accumulating near the input end of the drum. Between the flanges 7 and 8 a zone is created, wherein the first dewatering stage is taking place. Because of the relatively small slurry particles comparatively small perforations in the wall of the drum are required in this zone in order to impede such particles from escaping together with the water through said wall. Said first zone being passed, the screw flange 8 acts upon the pulp, feeding the somewhat dewatered slurry forwards.
  • a portion of the pulp thus feed forwards past the screw flange 8 is then brought up along the wall of the drum by the driving plate 9 and thrown back into the first mentioned zone from where it again will be fed forwards by the flange 8.
  • the mass has arrived in the zone of the drum, where the perforations in the wall are of' bigger dimension, it has caked itself into lumps of larger size, which impedes the pulp from escaping through said bigger perforations.
  • the pulp between the flanges 10,11, and 12,13 it is subjected to a pressing operation, whereby a comparatively complete dewatering is taking place. Thereafter the dewatered mass is discharged on the ramp 20 from where it slides down for example on a device for its removal transportation.
  • a device for separating liquid from a slurry comprising a rotatably supported elongated drum having a side wall with perforations therethrough throughout its length, an inlet opening at one end and an outlet opening at its opposite end, means connected to said drum and capable of rotating said drum around its axis, an interspaced feed screw assembly attached to and positioned along the interior of said drum wall and a rotatably supported cylindrical brush positioned alongside the exterior of said drum wall with its axis extending lengthwise of said drum wall and having bristles extending radially of said brush axis to said drum wall for being rotated therewith whereby said bristles will remove material from said drum wall perforations.
  • each screw flange is a portion of a screw thread and the screw flanges approaching the outlet opening of said drum have an opposite feeding direction to the screw flanges leading from the inlet opening.
  • a device for separating liquid from a slurry as claimed in claim 3 wherein the terminals of each screw flange is located substantially in front of the terminals of adjacent flanges.
  • a device for separating liquid from a slurry as claimed in claim 2 including at least one driving plate provided on said drum wall adjacent at least one screw flange and capable of throwing dewatered pulp back into the zone immediately preceding said screw flange during rotation of said drum.
  • a device for separating liquid from a slurry as claimed in claim 1 including a supply tube extending through said drum inlet opening and extending towards the interior of said drum wall for flushing said wall with water fed into said drum with the slurry.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
US23553A 1969-04-24 1970-03-30 Device for separating liquid from a slurry Expired - Lifetime US3695448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE5832/69A SE346068B (xx) 1969-04-24 1969-04-24

Publications (1)

Publication Number Publication Date
US3695448A true US3695448A (en) 1972-10-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US23553A Expired - Lifetime US3695448A (en) 1969-04-24 1970-03-30 Device for separating liquid from a slurry

Country Status (5)

Country Link
US (1) US3695448A (xx)
BE (1) BE796686Q (xx)
DE (2) DE2018684C3 (xx)
GB (1) GB1289708A (xx)
SE (1) SE346068B (xx)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964969A (xx) * 1972-10-25 1974-06-24
US3868960A (en) * 1971-09-16 1975-03-04 Anthony Raymond Cove Machines for washing bottles and like containers and removing labels therefrom
US3922220A (en) * 1973-11-02 1975-11-25 Kenics Corp Permeable membrane separation device and method
DE2711528A1 (de) * 1976-03-27 1977-10-06 Kopalnia Wegla Kamiennego Bole Einrichtung zur kontinuierlichen entwaesserung in der hydromechanischen und mechanischen verarbeitung von ausgeflockten schlaemmen
US4054507A (en) * 1976-04-09 1977-10-18 Marathon Oil Company Dewatering water-wet particles and blending the particles in a liquid carrier
US4439320A (en) * 1976-07-07 1984-03-27 Arie Blok Solids concentrator
US4507202A (en) * 1982-01-18 1985-03-26 Dan Nord Device for the separation of a liquid
US4597865A (en) * 1985-01-11 1986-07-01 Hunt Arthur J Rotary liquid separation unit
US4705631A (en) * 1985-06-10 1987-11-10 Oy Tampella Ab Thickener
US5041223A (en) * 1987-03-02 1991-08-20 Roto-Sieve Ab Arrangement for an inlet pipe in a rotating drum sieve
US5699573A (en) * 1992-11-05 1997-12-23 Finbark Oy Method and pulp washing machine for washing of pulp or any corresponding material
US6004468A (en) * 1998-07-17 1999-12-21 Barbulescu; Adrian Serial drum apparatus and method for processing wet material
US20050077254A1 (en) * 2003-10-14 2005-04-14 Townsend Engineering Company Dual filter system for filtering of injector fluids
US20060025062A1 (en) * 1995-03-28 2006-02-02 Jorgen Masen Device and method for separating foreign objects from a mass of coins
US20060273048A1 (en) * 2005-06-01 2006-12-07 Accent Manufacturing, Inc. Internally fed rotary screen manure separator
US7464802B2 (en) 1996-03-07 2008-12-16 Coinstar, Inc. Method and apparatus for conditioning coins prior to discrimination
US7520374B2 (en) 1996-06-28 2009-04-21 Coinstar, Inc. Coin discrimination apparatus and method
US20120060702A1 (en) * 2010-09-10 2012-03-15 Sanyo Foods Co., Ltd. Apparatus for unbinding a mass of mutually sticked noodles
EP2628519A1 (en) 2012-02-15 2013-08-21 Alfa Laval Corporate AB Device for removing liquid
WO2014096913A1 (en) * 2012-12-20 2014-06-26 Diemme Enologia S.P.A. A continuous pressing device and a functioning method thereof
US8967361B2 (en) 2013-02-27 2015-03-03 Outerwall Inc. Coin counting and sorting machines
US9022841B2 (en) 2013-05-08 2015-05-05 Outerwall Inc. Coin counting and/or sorting machines and associated systems and methods
US9036890B2 (en) 2012-06-05 2015-05-19 Outerwall Inc. Optical coin discrimination systems and methods for use with consumer-operated kiosks and the like
US9235945B2 (en) 2014-02-10 2016-01-12 Outerwall Inc. Coin input apparatuses and associated methods and systems
US10226793B2 (en) * 2014-11-24 2019-03-12 Green Creative Waste sorting device having an improved rotary screen
US20220355225A1 (en) * 2021-05-10 2022-11-10 Lyco Manufacturing Inc. Externally Fed Screen for Filtration

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ182084A (en) * 1976-09-17 1981-02-11 Contra Shear Holdings Rotating drum screen
SE402716B (sv) * 1976-11-22 1978-07-17 Roto Sieve Ab Vetskeavskiljningsanordning innefattande skruv i perforerad trumma
DE2851714C3 (de) * 1978-11-30 1981-04-30 Maschinenbau Gabler GmbH, 2400 Lübeck Verfahren und Anlage zum Transportieren und Stapeln von aus thermoplastischer Kunststoffolie gefergten Formkörpern
FI63075C (fi) * 1981-05-22 1983-04-11 Ahlstroem Oy Foerfarande foer upploesning och silning av ett fibrigt material
GB2312382A (en) * 1996-04-23 1997-10-29 Ecological Products Ltd Sludge thickening apparatus
DE102005048423B4 (de) 2005-10-10 2007-10-04 Joachim Krause Vorrichtung zum Trennen von Feststoffen aus flüssigen Medien
CN108854229A (zh) * 2018-06-25 2018-11-23 安徽恒宇环保设备制造股份有限公司 一种干灰掺烧输送系统用过滤压缩装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451A (en) * 1842-02-07 Machine for screening or sifting coal
US147717A (en) * 1874-02-17 Improvement in paper-pulp screens and dressers
AT31532B (de) * 1906-01-11 1908-01-25 Fritz Scheibler Vorrichtung zum kontinuierlichen und selbsttätigen Abscheiden von Faserstoffen aus Flüssigkeiten.
US932847A (en) * 1903-12-19 1909-08-31 G Et A Cusson Freres Et Cie Centrifugal bolting-machine.
US1412010A (en) * 1920-10-04 1922-04-04 Akins Randall Porter Ore classifier
GB837780A (en) * 1956-07-24 1960-06-15 Emmanuel Goriot Improvements in or relating to continuous-operation filter presses
CA626830A (en) * 1961-09-05 British Celanese Limited Rotary screen separator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451A (en) * 1842-02-07 Machine for screening or sifting coal
US147717A (en) * 1874-02-17 Improvement in paper-pulp screens and dressers
CA626830A (en) * 1961-09-05 British Celanese Limited Rotary screen separator
US932847A (en) * 1903-12-19 1909-08-31 G Et A Cusson Freres Et Cie Centrifugal bolting-machine.
AT31532B (de) * 1906-01-11 1908-01-25 Fritz Scheibler Vorrichtung zum kontinuierlichen und selbsttätigen Abscheiden von Faserstoffen aus Flüssigkeiten.
US1412010A (en) * 1920-10-04 1922-04-04 Akins Randall Porter Ore classifier
GB837780A (en) * 1956-07-24 1960-06-15 Emmanuel Goriot Improvements in or relating to continuous-operation filter presses

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868960A (en) * 1971-09-16 1975-03-04 Anthony Raymond Cove Machines for washing bottles and like containers and removing labels therefrom
JPS4964969A (xx) * 1972-10-25 1974-06-24
JPS5221742B2 (xx) * 1972-10-25 1977-06-13
US3922220A (en) * 1973-11-02 1975-11-25 Kenics Corp Permeable membrane separation device and method
DE2711528A1 (de) * 1976-03-27 1977-10-06 Kopalnia Wegla Kamiennego Bole Einrichtung zur kontinuierlichen entwaesserung in der hydromechanischen und mechanischen verarbeitung von ausgeflockten schlaemmen
US4054507A (en) * 1976-04-09 1977-10-18 Marathon Oil Company Dewatering water-wet particles and blending the particles in a liquid carrier
US4439320A (en) * 1976-07-07 1984-03-27 Arie Blok Solids concentrator
US4507202A (en) * 1982-01-18 1985-03-26 Dan Nord Device for the separation of a liquid
US4597865A (en) * 1985-01-11 1986-07-01 Hunt Arthur J Rotary liquid separation unit
US4705631A (en) * 1985-06-10 1987-11-10 Oy Tampella Ab Thickener
US5041223A (en) * 1987-03-02 1991-08-20 Roto-Sieve Ab Arrangement for an inlet pipe in a rotating drum sieve
EP0352272B1 (en) * 1987-03-02 1993-11-18 Roto-Sieve Ab Arrangement for an inlet pipe in a rotating drum sieve
US5699573A (en) * 1992-11-05 1997-12-23 Finbark Oy Method and pulp washing machine for washing of pulp or any corresponding material
US20060025062A1 (en) * 1995-03-28 2006-02-02 Jorgen Masen Device and method for separating foreign objects from a mass of coins
US7464802B2 (en) 1996-03-07 2008-12-16 Coinstar, Inc. Method and apparatus for conditioning coins prior to discrimination
US7520374B2 (en) 1996-06-28 2009-04-21 Coinstar, Inc. Coin discrimination apparatus and method
US6004468A (en) * 1998-07-17 1999-12-21 Barbulescu; Adrian Serial drum apparatus and method for processing wet material
US7037437B2 (en) 2003-10-14 2006-05-02 Townsend Engineering Company Dual filter system for filtering of injector fluids
US20060011562A1 (en) * 2003-10-14 2006-01-19 Townsend Engineering Company Dual filter system for filtering of injector fluids
US20050077254A1 (en) * 2003-10-14 2005-04-14 Townsend Engineering Company Dual filter system for filtering of injector fluids
US7001515B2 (en) * 2003-10-14 2006-02-21 Townsend Engineering Company Dual filter system for filtering of injector fluids
US20060273048A1 (en) * 2005-06-01 2006-12-07 Accent Manufacturing, Inc. Internally fed rotary screen manure separator
US9163874B2 (en) * 2010-09-10 2015-10-20 Sanyo Foods Co., Ltd. Apparatus for unbinding a mass of mutually sticked noodles
US20120060702A1 (en) * 2010-09-10 2012-03-15 Sanyo Foods Co., Ltd. Apparatus for unbinding a mass of mutually sticked noodles
EP2628519A1 (en) 2012-02-15 2013-08-21 Alfa Laval Corporate AB Device for removing liquid
WO2013120688A1 (en) 2012-02-15 2013-08-22 Alfa Laval Corporate Ab Device for removing liquid
US9594982B2 (en) 2012-06-05 2017-03-14 Coinstar, Llc Optical coin discrimination systems and methods for use with consumer-operated kiosks and the like
US9036890B2 (en) 2012-06-05 2015-05-19 Outerwall Inc. Optical coin discrimination systems and methods for use with consumer-operated kiosks and the like
WO2014096913A1 (en) * 2012-12-20 2014-06-26 Diemme Enologia S.P.A. A continuous pressing device and a functioning method thereof
US8967361B2 (en) 2013-02-27 2015-03-03 Outerwall Inc. Coin counting and sorting machines
US9230381B2 (en) 2013-02-27 2016-01-05 Outerwall Inc. Coin counting and sorting machines
US9183687B2 (en) 2013-05-08 2015-11-10 Outerwall Inc. Coin counting and/or sorting machines and associated systems and methods
US9022841B2 (en) 2013-05-08 2015-05-05 Outerwall Inc. Coin counting and/or sorting machines and associated systems and methods
US9235945B2 (en) 2014-02-10 2016-01-12 Outerwall Inc. Coin input apparatuses and associated methods and systems
US10226793B2 (en) * 2014-11-24 2019-03-12 Green Creative Waste sorting device having an improved rotary screen
US20220355225A1 (en) * 2021-05-10 2022-11-10 Lyco Manufacturing Inc. Externally Fed Screen for Filtration

Also Published As

Publication number Publication date
GB1289708A (xx) 1972-09-20
DE2018684C3 (de) 1980-04-24
DE2065886A1 (de) 1977-02-03
DE2018684A1 (de) 1970-11-05
BE796686Q (fr) 1973-07-02
DE2065886B2 (de) 1979-08-16
DE2018684B2 (de) 1979-08-16
DE2065886C3 (de) 1980-04-24
SE346068B (xx) 1972-06-26

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