US3441141A - Suction filter - Google Patents

Suction filter Download PDF

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Publication number
US3441141A
US3441141A US659168A US3441141DA US3441141A US 3441141 A US3441141 A US 3441141A US 659168 A US659168 A US 659168A US 3441141D A US3441141D A US 3441141DA US 3441141 A US3441141 A US 3441141A
Authority
US
United States
Prior art keywords
container
suction filter
filter
intermediate base
suction
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
US659168A
Other languages
English (en)
Inventor
Karl Zimmermann
Carlmax Sturzenegger
Werner Eicher
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.)
BASF Schweiz AG
Original Assignee
Ciba 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
Priority claimed from FR37666A external-priority patent/FR1469515A/fr
Priority claimed from CH1240966A external-priority patent/CH467092A/de
Application filed by Ciba AG filed Critical Ciba AG
Application granted granted Critical
Publication of US3441141A publication Critical patent/US3441141A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0058—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having different orientations to each other or crossing the conduit for the other heat exchange medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
    • 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
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1823—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines for gas-cooled nuclear reactors

Definitions

  • a suction filter comprises a container having a liquidpermeable base above and spaced from a base portion of the container, and being tiltable so that filtered material supported on the liquid-permeable base can be removed through an emptying aperture which lies at the lowest point of the container when tilted.
  • An impeller wheel is rotatably mounted within the container and is axially movably towards and away from the liquid-permeable base, the wheel being rotatable in one direction to smooth the filtered material and in the other to shear away portions of the material to permit them to fall under gravity towards the emptying aperture when the container is tilted.
  • the base portion contains an outlet for liquid.
  • the container may have a filling aperture in its upper portion and an emptying aperture which extends over the range of axial movement of the impeller wheel, or may have the shape of an oblique frustocone of which the apex constitutes a filling and emptying aperture.
  • Means for rotating and axially moving the impeller maybe mounted on the container to be tiltable therewith.
  • This invention relates to a suction filter comprising a tightly closable container having a liquid-permeable intermediate base disposed above its base, in which there is an outlet aperture, and a smoothing device in the form of an impeller wheel displaceable in the direction of its rotational axis arranged above the said intermediate base.
  • the impeller wheel serves as a device for smoothing over cracks in the cake in order to ensure that it is uniformly processed.
  • one previously proposed suction filter has a base capable of being tilted together with the filtration frame away from the remainder of the container. The suction-filtered cake then drops out whole. This is a disadvantage, especially in the case of large suction filters, since the cage may weigh several tons, and the energy involved in the drop requires additional measures. In addition, the long join between the tilting base and the upper part of the suction-filter container is a disadvantage.
  • a suction filter wherein a container has at least one aperture for filling and emptying the container, the, or each such aperture being closable in a pressure-tight fashion, a base portion, an outlet for liquid in said base portion, a liquid-permeable intermediate base disposed across the container so as to lie above and be spaced from the base portion when the container is in an upright filling and filtering position, and means tiltably mounting the container to permit the container to be tilted from said upright position to an inclined emptying position in which said intermediate base lies at an angle to the horizontal and the emptying aperture lies at or near the lowest point of the tilted container, and wherein an impeller wheel is rotatably mounted within the container above (relative to said base portion) the intermediate base, the impeller wheel being mounted so as to be movable in its axial direction towards and away from the intermediate base, and so as to be rotatable in one direction of rotation in which the wheel acts to smooth a filter cake supported on the intermediate base, and in the
  • the whole container is desirably tiltable through at least 45, and in the tilted position the intermediate base will lie at an angle of at least 45 to the horizontal, and preferably 60 to
  • the container is formed as an oblique frustocone above the region in which the impeller wheel is movable towards and away from the intermediate base, the apex of the frustocone forming a filling and emptying aperture.
  • the whole assembly is capable of being tilted about a horizontal axis extending parallel to the tangential plane of the steepest frustoconegeneratrix which lies preferably normal to the intermediate base, the angle of tilt being at least so great that when the apex of the frustocone is pointing downwards the steepest generatrix is at an angle of at least 45 to the horizontal, and preferably 60 to 80.
  • FIGURE 1 is a side elevation, partly in section of a suction filter in a filling and working position
  • FIGURE 2 is a view similar to FIGURE 1 showing the suction filter of FIGURE 1 in an emptying position;
  • FIGURE 3 is a side elevation, partly in section, of another suction filter in a filling and working position
  • FIGURE 4 is a view similar to FIGURE 3 showing the suction filter of FIGURE 3 in an emptying position
  • FIGURE 5 is a side elevation of the filter shown in FIG- URES 3 and 4 in an intermediate position.
  • FIGURES 1 and 2 and FIGURES 3 to 5 each show a respective embodiment of a tiltable suction filter which consists of a container 1 which is capable of being closed in pressure-tight fashion, and which is mounted so as to be pivotable about a horizontal spindle 3 (FIGURES 1 and 2) or trunnions 3 (FIGURES 3 to 5).
  • the container may be rotated or tilted mechanically or hydraulically about its spindle or trunnions 3 by well known means (not shown).
  • An intermediate base 10, which is made in the form of a filter, is disposed in the lower part of the suction filter container 1.
  • the part of the container disposed above the intermediate base 10 is formed with a filler aperture 6 which is tightly closable by means of a cover 9.
  • the cover 9 may be equipped with a pressureand/ or vacuum connection and an air-discharge union (not shown).
  • An electric motor 7 is provided for imparting rotation at choice in either direction to an impeller wheel or agitator 8 which can be hydraulically or mechanically lifted and lowered, together with the motor, the whole assembly of motor and impeller wheel being mounted on the container 1.
  • the impeller wheel 8 is arranged so that its blades smooth the filter cake when the wheel is rotated in one direction and shear the filter cake when the wheel is rotated in the other direction.
  • the spindle 3 is arranged to one side of the container and the whole filter assembly is capable of being tilted by means of a lifting device (not shown) from the filling and working position illustrated in FIGURE 1 into the emptying position shown in FIGURE 2.
  • a lifting device not shown
  • the intermediate base 10 and thus the surface of the cake K lie at an angle a of greater than 45 to the horizontal.
  • the aperture 13 In the side-wall of the container 1 there is an emptying aperture 13 which is closable by a cover 12, the aperture 13 extending over a height from the intermediate base 10 as far as the highest surface level of the cake K which is reached in practice.
  • the arrangement is such that, in the tilted position the emptying aperture 13 is adjacent the lowest point of the surface of the intermediate base. In this position, when the impeller wheel 8 is moved in the shearing direction and the cover 12 is opened, the sheared-off material slides over the surface of the cake and drops out of the suction filter container through the aperture 13.
  • the upper part of the suction filter container 1 is in the shape of an oblique frustocone 5, 5' above the region in which the impeller wheel 8 of the smoothing and shearing device is displaceable, the apex of the said frustocone forming the combined filling and emptying aperture 6.
  • the impeller wheel drive including the electric motor 7, etc. is mounted on the fiattest generatrix 5 of the frustoconical upper part of the container.
  • the trunnions 3 are disposed so that the trunnion axis passes approximately through the centre of gravity of the whole assembly which is mounted on a stand 2.
  • the steepest frustocone-generatrix 5' is at an angle a of greater than 45 to the horizontal, so that, when the impeller Wheel 8 is actuated in the shearing direction, suction-filtered material scraped off the cake K slides down over the wall 5 and drops out of the suction filter container through the aperture 6.
  • the cover 9 is opened and the suction filter is filled in the position illustrated in FIGURE 1 or 3, whereafter the cover 9 is replaced. Filtration then takes place, vacuum being set up beneath the base 10 of the suction filter via the union 11 and/or pressure being set up in the part of the suction filter container above the said base. After the liquid has been sucked away, the filter cake may be washed. For this purpose, washing liquid is introduced through the cover 9, which is again opened. While the filter cake is being sucked dry, the impeller wheel 8 is set is action for smoothing purposes. When the filter cake has been sucked dry, the space 4 beneath the intermediate base '10 is left under vacuum and the suction filter is tilted into the emptying position of FIGURE 2 or 4.
  • the cover 12 of the emptying aperture 13 is preferably opened before tilting and while the filter is still in the position shown in FIGURE 1.
  • the cover 9 of the emptying aperture 6 is preferably opened in the intermediates position shown in FIGURE 4. Since the space 4 of the suction filter is still under vacuum the suction-filtered cake normally does not come away from the intermediate base 10.
  • the impeller Wheel 8 is now actuated in the scraping direction, and the filtered material is cut out by measured feed to the impeller wheel. Since the intermediate base 10 (FIGURES 1, 2) or the wall portion 5' (FIGURES 3 to 5 leading to the emptying aperture 13 (FIGURES 1 and 2) or 6 (FIGURES 3 to 5) are at an angle of at least 45 to the horizontal, the moist suction-filtered material will fall out through the emptying aperture.
  • the cover 9 may be equipped with filling, air-discharge, vacuum and/or pressure unions (not illustrated). Filling and the introduction of pressure and washing liquid may then be carried out via these connections with the cover 9 closed.
  • the driving shaft of the impeller wheel 8 may also be made hollow, so that it can act as an inlet pipe, especially for washing liquid.
  • Any suitable mechanical or hydraulic tilting device of known type may be used for rotating the suction filter, and is therefore not illustrated.
  • a suction filter comprising a container, portions to said container defining at least one aperture for filling and emptying the container, means for closing such aperture in pressure-tight fashion, a base portion to said container, an outlet for liquid in said base portion, a liquid-permeable intermediate base disposed across said container so as to lie above and be spaced from the base portion when the container is in an upright filling and filtering position, means tiltably mounting said container to permit the container to be tilted from said upright position to an inclined emptying position in which said intermediate base lies at an angle to the horizontal and the emptying aperture lies at the lowest point of the tilted container, an impeller wheel rotatably mounted within the container above (relative to said base portion) the intermediate base, means for moving said impeller wheel in its axial direction towards and away from the intermediate base, and means for rotating the impeller in one direction of rotation in which the wheel acts to smooth a filter cake supported on the intermediate base, and in the other direction in which the wheel shears away portions of the cake to permit them to fall under gravity towards
  • suction filter of claim 1 wherein the container has a filling aperture located in an upper portion thereof remote from said base portion, and an emptying aperture located in a side portion the height of the emptying aperture extending, when the container is in said upright position from said intermediate base to a level where the impeller wheel lies at its greatest distance from the intermediate base.
  • suction filter of claim 1 wherein said mounting means permit the container to be tilted so that said intermediate base lies at an angle of from 45 to to the horizontal.
  • the container has the shape of an oblique frustoccone, and wherein the apex of the frustocone is formed as a single filling and emptying aperture, the mounting means being such as to permit the container to be tilted about a horizontal axis so that, when said emptying aperture lies at the lowest point of the tilted container, the steepest generatrix of the frustocone lies at an angle of at least 45 to the horizontal.
  • suction filter of claim 5 wherein said mounting means permit the container to be tilted so that said steepest generatrix at an angle of from 60 to 80 to the horizontal.
  • suction filter of claim 5 wherein said means for rotating the impeller is mounted on the container and includes a drive shaft which passes through the container in the region of the flattest generatrix of said frustocone,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Filtration Of Liquid (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Crushing And Pulverization Processes (AREA)
US659168A 1965-11-08 1967-08-08 Suction filter Expired - Lifetime US3441141A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR37666A FR1469515A (fr) 1965-11-08 1965-11-08 Echangeur de chaleur monotubulaire à circulation forcée
CH1240966A CH467092A (de) 1966-08-26 1966-08-26 Nutsche
CH927267A CH483861A (de) 1965-11-08 1967-06-29 Nutsche

Publications (1)

Publication Number Publication Date
US3441141A true US3441141A (en) 1969-04-29

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ID=27176184

Family Applications (1)

Application Number Title Priority Date Filing Date
US659168A Expired - Lifetime US3441141A (en) 1965-11-08 1967-08-08 Suction filter

Country Status (5)

Country Link
US (1) US3441141A (de)
CH (1) CH483861A (de)
DE (2) DE1551021A1 (de)
FR (1) FR1551021A (de)
GB (1) GB1190456A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494467A (en) * 1968-04-03 1970-02-10 Douglas A Paisley Horizontal leaf dry cake discharge filter
US3593853A (en) * 1968-08-26 1971-07-20 Putsch & Co H Inclined filter assembly
US4297455A (en) * 1977-03-22 1981-10-27 Bayer Aktiengesellschaft Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates
US4770772A (en) * 1986-10-31 1988-09-13 Nihon Schumacher Kabushiki Kaisha Apparatus for separating and drying fine particles
US4828697A (en) * 1985-09-17 1989-05-09 Schenk Filterbau Gmbh Suction filter
US5034123A (en) * 1988-11-17 1991-07-23 Mitsubishi Denki K.K. Filtering apparatus for processing liquids
US5269923A (en) * 1991-02-27 1993-12-14 Schenk Filterbau Gmbh Agitator suction filter
US20040050802A1 (en) * 2002-05-17 2004-03-18 Banister John Patrick Fluid bed filter-dryer apparatus
US20080173594A1 (en) * 2004-05-23 2008-07-24 Rosenmund Vta Ag Method and Device For Removal of Residual Products
GB2475047B (en) * 2009-11-03 2015-01-14 Sweeptech Environmental Services Llp Wet waste recycling system
US20150231540A1 (en) * 2012-08-31 2015-08-20 Wello Rolling container system
US20180161706A1 (en) * 2015-07-15 2018-06-14 Delta Costruzioni Meccaniche S.R.L. Device and method for separating the solid fraction from the liquid fraction of a slurry
US11285410B2 (en) * 2017-09-19 2022-03-29 Sartorius Stedim Biotech Gmbh Filter skid with tilting mechanism
US11911719B2 (en) * 2019-09-20 2024-02-27 Massachusetts Institute Of Technology Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH574753A5 (de) * 1974-07-03 1976-04-30 Bertrams Ag Hch
DE2848109C3 (de) * 1978-11-06 1984-08-09 Seitz Enzinger Noll Maschinenbau Ag, 6800 Mannheim Filtertrockner mit kippbarem Druckbehälter
DE2950300C2 (de) * 1979-12-14 1983-07-14 Seitz-Werke Gmbh, 6550 Bad Kreuznach Drucknutsche zur Feststoffabscheidung
DE3022644C2 (de) * 1980-06-18 1986-12-04 Schenk Filterbau Gmbh, 7076 Waldstetten Prozeßfilter
JPS5835726B2 (ja) * 1980-09-19 1983-08-04 日本染色機械株式会社 濾過装置
DE3520249A1 (de) * 1985-06-05 1986-12-11 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Vorrichtung zum austragen von filterkuchen aus einer nutsche

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US589189A (en) * 1897-08-31 James a
US2625273A (en) * 1949-12-02 1953-01-13 Arthur A Schuller Invertible filter unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US589189A (en) * 1897-08-31 James a
US2625273A (en) * 1949-12-02 1953-01-13 Arthur A Schuller Invertible filter unit

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494467A (en) * 1968-04-03 1970-02-10 Douglas A Paisley Horizontal leaf dry cake discharge filter
US3593853A (en) * 1968-08-26 1971-07-20 Putsch & Co H Inclined filter assembly
US4297455A (en) * 1977-03-22 1981-10-27 Bayer Aktiengesellschaft Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates
US4828697A (en) * 1985-09-17 1989-05-09 Schenk Filterbau Gmbh Suction filter
US4770772A (en) * 1986-10-31 1988-09-13 Nihon Schumacher Kabushiki Kaisha Apparatus for separating and drying fine particles
US5034123A (en) * 1988-11-17 1991-07-23 Mitsubishi Denki K.K. Filtering apparatus for processing liquids
US5269923A (en) * 1991-02-27 1993-12-14 Schenk Filterbau Gmbh Agitator suction filter
US7713411B2 (en) * 2002-05-17 2010-05-11 Applied Chemical Technology, Inc. Fluid bed filter-dryer apparatus
US20040050802A1 (en) * 2002-05-17 2004-03-18 Banister John Patrick Fluid bed filter-dryer apparatus
US20080173594A1 (en) * 2004-05-23 2008-07-24 Rosenmund Vta Ag Method and Device For Removal of Residual Products
US7473375B2 (en) * 2004-05-23 2009-01-06 Rosenmund Vta Ag Method and device for removal of residual products
GB2475047B (en) * 2009-11-03 2015-01-14 Sweeptech Environmental Services Llp Wet waste recycling system
US20150231540A1 (en) * 2012-08-31 2015-08-20 Wello Rolling container system
US9764262B2 (en) * 2012-08-31 2017-09-19 Wello Rolling container system
US10441907B2 (en) 2012-08-31 2019-10-15 Wello Rolling container system
US20180161706A1 (en) * 2015-07-15 2018-06-14 Delta Costruzioni Meccaniche S.R.L. Device and method for separating the solid fraction from the liquid fraction of a slurry
US11285410B2 (en) * 2017-09-19 2022-03-29 Sartorius Stedim Biotech Gmbh Filter skid with tilting mechanism
US11911719B2 (en) * 2019-09-20 2024-02-27 Massachusetts Institute Of Technology Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients

Also Published As

Publication number Publication date
FR1551021A (de) 1968-12-27
DE1551021A1 (de) 1970-01-02
DE1648859A1 (de) 1971-09-09
DE1648859B2 (de) 1977-03-03
CH483861A (de) 1970-01-15
GB1190456A (en) 1970-05-06

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