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WO1990013347A1 - Dispositif de separation - Google Patents

Dispositif de separation Download PDF

Info

Publication number
WO1990013347A1
WO1990013347A1 PCT/SE1990/000155 SE9000155W WO9013347A1 WO 1990013347 A1 WO1990013347 A1 WO 1990013347A1 SE 9000155 W SE9000155 W SE 9000155W WO 9013347 A1 WO9013347 A1 WO 9013347A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
liquid
mixture
filtering belt
filtering
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.)
Ceased
Application number
PCT/SE1990/000155
Other languages
English (en)
Inventor
Gunnar Fast
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.)
Svensk Industrimiljo AB
Original Assignee
Svensk Industrimiljo AB
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 Svensk Industrimiljo AB filed Critical Svensk Industrimiljo AB
Publication of WO1990013347A1 publication Critical patent/WO1990013347A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
    • B01D33/275—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces using contiguous impervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
    • B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/74—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging filtrate

Definitions

  • the present invention relates to a device for separation of liquid and solid components of a mixture thereof, comprising a filtering belt with meshes, said filtering belt being arranged to receive the mixture on a surface facing upwardly and by means of its mesh size attain said separation by letting liquid components through while retaining solid ones, and an apparatus arranged to generate an active driving of the mixture liquid through the filtering belt.
  • Such devices may be used for all kinds of separation purposes, where it is desired to obtain either solid substances relieved of liquid or liquid relieved of solid substances.
  • An example of the first case is separation of water from peat material, while separation of grindings from oil used in grinding is an example of cleaning a liquid from undesired solid particles.
  • Applica ⁇ tions in which the solid as well as the liquid components of a mixture each have a value may of course also exist.
  • the apparatus for active driving of the mixture liquid through the filtering belt consists of nozzles connected to a compressed air source, which nozzles blow compressed air towards the mixture so as to try to press the liquid therein through the filtering belt.
  • a device having such an apparatus may only treat small mixture amounts per unit of time.
  • another inconvenience resides in the fact that the mixture lying on the filtering belt tends to receive laterally directed forces from the compressed air jets, which forces may spread the mixture laterally, maybe outside the filtering belt, instead of pres ⁇ sing the mixture liquid through the meshes of the filtering belt.
  • the object of the present invention is to provide a device of the type mentioned in the introduction, which reduces the drawbacks discussed in the prior art devices while considerably increasing the reliability and efficiency of the separation.
  • this object is obtained by arranging the apparatus for active driving of the mixture liquid through the filtering belt in a device of the type discussed above to produce a negative air pressure on the underside of the fil ⁇ tering belt for sucking the liquid through the belt.
  • the filtering belt is supported by another belt, which in its turn is arranged to bear upon a plate while forming free spaces between itself and the plate.
  • a groove is arranged in the plate and emerges into an orifice connected to a device for generating a negative air pressure. Thanks to the spaces formed between the support belt and the plate the negative air pressure deriving from said orifice may be spread over the lower surface of the support belt so as to suck liquid through the filtering belt and the support belt.
  • the support belt consists of a wire belt known per se with axles being inter ⁇ connected by rigid wires, for instance made of steel.
  • Fig 1 is a very schematic side elevation of an embodiment of the device according to the invention.
  • Fig 2 is a perspective view from above of a section cut away of the device according to Fig l.
  • Fig 3 is a partially sectioned side elevation of a support belt used in the device according to Fig 1
  • Fig 4 is a view from above of a section of a support belt shown in Fig 3
  • Fig 3 is a partially sectioned side elevation of a support belt used in the device according to Fig 1
  • Fig 4 is a view from above of a section of a support belt shown in Fig 3
  • Fig 5 is a view of section taken along the line v-V in Fig 1.
  • the device comprises a filtering belt 1 with meshes of such a size that the solid substances contained in the mixture to be separated may not pass through the belt. However, it is not excluded that a small number of very small solid substances are allowed to follow the separated liquid through the filtering belt.
  • the filtering belt may be made of any suitable material, for instance tissue, plastic or metal, and consists of a flexible, thin fabric. In case sepa ⁇ ration of grindings from oil is desired, it is possible to use a steel fabric with a mesh size of about 200 mesh (74,5 ⁇ ) . However, the mesh size may vary considerably and be in the order of mm on separation of water from a wet peat material.
  • the filtering belt 1 is endless and driven by a diverting roller 2.
  • the filtering belt l is supported by a support belt 3, also endless, which is diverted by two diverting rollers 4 and 5, one 4 of which is drivable. These two diverting rollers also participate in the diverting of the filtering belt 1.
  • the rollers 2 and 4 are suitably arranged to drive the two belts 1 and 3 with the same speed.
  • the support belt 3 is air and liquid permeable with considerably larger holes than the meshes of the filtering belt and consists here of a wire belt known per se with a plurality of mutually spaced transversal axles 6, which are interconnected by links 7 of rigid wire, in this case steel wire, which extends between the axles 6 on one and the same side, namely that belt side which is turned outwardly (see Figs 2 and 3) .
  • the upper part of the support belt is in its turn arranged to bear upon a rigid underlayer in the form of a substantially flat plate 8, which has a groove 9 running downwardly and extending in the longitudinal direction of the belts, said groove emerging into a lower orifice 10 located in the middle of the plate, to which orifice a device for gene ⁇ rating a negative air pressure is connected.
  • a sealing tympan strap 13 preferably of rubber, bears through spring loaded rollers 12 on both sides of the belts l and 3 upon the plate 8 so as to establish an accurate sealing and prevent lateral draughts along the belt borders.
  • the upper surface of the filtering belt is arranged to receive the mixture to be separated in the region 14 of one end of the upper belt part from an arbitrary supplying device (not shown) .
  • the mixture is intended to follow the filtering belt in its movement in the direction of the arrow A (Fig l).
  • a plough 15 is arranged immediately above the filtering belt l so as to uniformly distribute the mixture passing thereunder over the whole width of the filtering belt.
  • a draining groove 16 with a lower orifice 17 for carrying liquid away is arranged in the plate 8 under the plough 15.
  • the draining groove 16 is arranged to remove a first easily separated liquid amount from the mixture, which may pass through the filtering belt 1 solely by the influence of the gravitation. However, this draining groove 16 may be omitted in the case that the combination of the liquid contained in the mixture and the mesh size of the filtering belt makes it impossible for the liquid to pass through the belt solely by means of the gravitation.
  • the rolls 19 are also intended to be arranged in such devices, which have to treat mixtures with solid components with ability to absorb liquid.
  • the rolls 19 then serve to press the liquid out of these solid components, when they pass under the rolls. This makes it possible to assure that also in such mixtures only solid, liquidpoor particles remain upon the filtering belt on arriving thereon to the region 20, where it is diverted downwardly.
  • a collecting vessel 21 for solid particles is arranged in the region 20 below the filtering belt. The particles located on the under ⁇ side of the filtering belt after the diverting thereof will by means of the gravitation fall down into the vessel. It is not an obligation, but other means may also be arranged to remove the particles from the belt.
  • a compressed air nozzle 22 ar ⁇ ranged to blow the particles off the belt and down into the vessel 21 is shown in Fig 1.
  • magnetical solid particles such as grindings
  • one or more magnets could also be arranged under the belt for attracting the solid particles.
  • the negative air pressure generating device comprises a fan schematically indicated at 23, the low side 24 of which is connected to an air space 26' above the liquid surface of a closed recipient 25 for collecting the liquid separated from the mixture.
  • a conduit 26 is arranged to connect said air space with the orifice 10 in the underlayer 8 for the transport of suction air with liquid drawn through the filtering belt 1 to the recipient 25.
  • a draining means in the form of a liquid pump 27 is arranged at the recipient 25 for holding the volume of the air space 26' above the liquid surface over a predetermined value, which in Fig 1 is indicated by ⁇ max", this mark defining the highest liquid surface level allowed in the recipient. This is in order not to jeopardize the separation function of the device through air suction.
  • the liquid pump 27 is arranged at an essential height above the bottom of the collecting reci ⁇ pient and to pump liquid out of the recipient at time intervals being long enough to give a substantial part of the small solid particles passing with the liquid through the filtering belt, which particles have a smaller size than the meshes of the filtering belt, time to sink below said height and remain in the recipient when this is pumped out.
  • a kind of decan- tation is carried out, since small solid contamination par ⁇ ticles settle and form a sediment. This may be an important feature of the purifying of oils used in machining in the engineering industry.
  • the liquid level is never allowed to sink below a "min-'-level lying above the connection of the liquid pump, so that liquid in every desired moment may be pumped away from the recipient, for instance for immediate re-use.
  • the liquid pumped out of the recipient 2 ' 5 is then led to a vessel 28 for intermediate storing.
  • the device according to the invention may be adapted to receive a mixture deriving from a process in which a liquid is utilized and gets contaminated by solid substances, and the purified liquid from the liquid pump 27 or the intermediate storing vessel 28 may then through a conduit be recirculated to the process. This is particularly advantageous in purifying oils used in grinding and other material machinings for bonding of grindings, cooling and the like.
  • a filter 29 is arranged between the fan 23 and the recipient 25 to clean the suction air sucked towards the fan, so that no contaminations or particles from the liquid flowing through the conduit 26 down into the recipient arrive to the fan 23.
  • the hot air leaving the fan 23 on its exhaust side will accordingly be harmless to inhale.
  • the liquid is purified by the removal of air.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Un dispositif pour séparer les constituants liquides et solides dans un mélange comprend une courroie de filtrage (1) à mailles, ladite courroie étant ménagée de manière à recevoir le mélange sur une surface supérieure, et à accomplir ladite séparation grâce aux dimensions de ses mailles qui permettent aux constituants liquides de passer à travers, tout en retenant les constituants solides. Le dispositif comprend également un appareil (23) aménagé pour l'entraînement actif du liquide du mélange à travers la courroie de filtrage (1), ledit appareil étant conçu pour créer une pression aérodynamique négative sur la surface inférieure de ladite courroie de manière à aspirer le liquide.
PCT/SE1990/000155 1989-05-12 1990-03-12 Dispositif de separation Ceased WO1990013347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8901709-9 1989-05-12
SE8901709A SE465856B (sv) 1989-05-12 1989-05-12 Separationsanordning med filtrerband och baerarband

Publications (1)

Publication Number Publication Date
WO1990013347A1 true WO1990013347A1 (fr) 1990-11-15

Family

ID=20375939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000155 Ceased WO1990013347A1 (fr) 1989-05-12 1990-03-12 Dispositif de separation

Country Status (3)

Country Link
AU (1) AU5555490A (fr)
SE (1) SE465856B (fr)
WO (1) WO1990013347A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523821A3 (en) * 1991-07-15 1993-03-10 Mannesmann Aktiengesellschaft Application of a micro-perforated metal band as filter means
WO1994015694A1 (fr) * 1992-12-30 1994-07-21 American National Can Company Procede et dispositif d'evacuation de liquide sur une bande transporteuse en gaze et rouleau creux comportant un tube utilisable dans ce dispositif
AU686074B1 (en) * 1997-07-03 1998-01-29 Madison Filter 981 Limited Filter belt edge structure
RU2124923C1 (ru) * 1996-12-31 1999-01-20 Потехин Борис Николаевич Ленточный пресс-фильтр для обезвоживания шлама и ила
FR2787034A1 (fr) * 1998-12-09 2000-06-16 Filtres Monnet Dispositif de separation solides/liquides et/ou liquides/liquides en continu sous vide autorisant la mise en oeuvre de media fragiles ou peu resistants a l'etat humide
FR2787035A1 (fr) * 1998-12-09 2000-06-16 Filtres Monnet Dispositif de separation solides/liquides et/ou liquides/liquides en continu sous vide autorisant la mise en oeuvre de media fragiles ou peu resistants a l'etat humide
WO2002096536A1 (fr) * 2001-05-31 2002-12-05 The Warb Trust (No. 1 Trust 13337/99) Presse de deshydratation pour boue
WO2004012845A1 (fr) * 2002-08-02 2004-02-12 Varco I/P, Inc. Appareil pour traiter un fluide charge de matieres
EP1834682A1 (fr) * 2006-03-14 2007-09-19 BOKELA Ingenieurgesellschaft für mechanische Verfahrenstechnik mbH procede et appareil pour la filtration
EP1896195A4 (fr) * 2005-06-30 2011-11-02 Virdrill As Appareil de tamisage et de séparation du fluide et son procédé d' utilisation
CN104107579A (zh) * 2014-07-31 2014-10-22 梁均全 一种拱形带式负压过滤装置
WO2017100226A1 (fr) * 2015-12-08 2017-06-15 M-I L.L.C. Appareil et procédé de séparation comprenant un dispositif à différentiel de pression
CN112122090A (zh) * 2020-10-12 2020-12-25 濮阳市中原锐实达石油设备有限公司 一种用于钻井泥浆的固液气分离一体筛

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU637275B2 (en) * 1991-04-17 1993-05-20 Michael Owens Controller for moving belt filters

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE88937C1 (fr) *
EP0125956A1 (fr) * 1983-04-14 1984-11-21 Christian Queyroix Filtre horizontal à bande sans fin sous vide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE88937C1 (fr) *
EP0125956A1 (fr) * 1983-04-14 1984-11-21 Christian Queyroix Filtre horizontal à bande sans fin sous vide

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523821A3 (en) * 1991-07-15 1993-03-10 Mannesmann Aktiengesellschaft Application of a micro-perforated metal band as filter means
WO1994015694A1 (fr) * 1992-12-30 1994-07-21 American National Can Company Procede et dispositif d'evacuation de liquide sur une bande transporteuse en gaze et rouleau creux comportant un tube utilisable dans ce dispositif
US5659973A (en) * 1992-12-30 1997-08-26 American National Can Co. Device and method for removing liquid on a gauze conveyor
US5749155A (en) * 1992-12-30 1998-05-12 American National Can Company Device for removing liquid on a gauze conveyor and hollow roll comprising a tube for use in such a device
RU2124923C1 (ru) * 1996-12-31 1999-01-20 Потехин Борис Николаевич Ленточный пресс-фильтр для обезвоживания шлама и ила
AU686074B1 (en) * 1997-07-03 1998-01-29 Madison Filter 981 Limited Filter belt edge structure
FR2787034A1 (fr) * 1998-12-09 2000-06-16 Filtres Monnet Dispositif de separation solides/liquides et/ou liquides/liquides en continu sous vide autorisant la mise en oeuvre de media fragiles ou peu resistants a l'etat humide
FR2787035A1 (fr) * 1998-12-09 2000-06-16 Filtres Monnet Dispositif de separation solides/liquides et/ou liquides/liquides en continu sous vide autorisant la mise en oeuvre de media fragiles ou peu resistants a l'etat humide
WO2002096536A1 (fr) * 2001-05-31 2002-12-05 The Warb Trust (No. 1 Trust 13337/99) Presse de deshydratation pour boue
GB2408000A (en) * 2002-08-02 2005-05-18 Varco Int Apparatus for processing material laden fluid
WO2004012845A1 (fr) * 2002-08-02 2004-02-12 Varco I/P, Inc. Appareil pour traiter un fluide charge de matieres
US6910587B2 (en) 2002-08-02 2005-06-28 Varco I/P, Inc. Gumbo separator methods and apparatuses
GB2408000B (en) * 2002-08-02 2006-03-22 Varco Int Gumbo separator and method for separating gumbo from a gumbo laden drilling fluid
EP1896195A4 (fr) * 2005-06-30 2011-11-02 Virdrill As Appareil de tamisage et de séparation du fluide et son procédé d' utilisation
US8746460B2 (en) 2005-06-30 2014-06-10 Cubility As Apparatus for sieving and fluid separation and a method of using same
EP2767350A1 (fr) * 2005-06-30 2014-08-20 Virdrill AS Appareil de tamisage et de séparation du fluide et son procédé d'utilisation
EP1834682A1 (fr) * 2006-03-14 2007-09-19 BOKELA Ingenieurgesellschaft für mechanische Verfahrenstechnik mbH procede et appareil pour la filtration
CN104107579A (zh) * 2014-07-31 2014-10-22 梁均全 一种拱形带式负压过滤装置
CN104107579B (zh) * 2014-07-31 2016-08-03 梁均全 一种拱形带式负压过滤装置
WO2017100226A1 (fr) * 2015-12-08 2017-06-15 M-I L.L.C. Appareil et procédé de séparation comprenant un dispositif à différentiel de pression
US10543512B2 (en) 2015-12-08 2020-01-28 M-I L.L.C. Apparatus and method of separation with a pressure differential device
CN112122090A (zh) * 2020-10-12 2020-12-25 濮阳市中原锐实达石油设备有限公司 一种用于钻井泥浆的固液气分离一体筛

Also Published As

Publication number Publication date
SE8901709L (sv) 1990-11-13
SE8901709D0 (sv) 1989-05-12
AU5555490A (en) 1990-11-29
SE465856B (sv) 1991-11-11

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