US3357345A - Apparatus for liquid removal - Google Patents

Apparatus for liquid removal Download PDF

Info

Publication number
US3357345A
US3357345A US429755A US42975565A US3357345A US 3357345 A US3357345 A US 3357345A US 429755 A US429755 A US 429755A US 42975565 A US42975565 A US 42975565A US 3357345 A US3357345 A US 3357345A
Authority
US
United States
Prior art keywords
discs
zone
screw
rotation
doctor
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
US429755A
Other languages
English (en)
Inventor
Alan R Hamilton
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.)
Rice Barton Corp
Original Assignee
Rice Barton 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 Rice Barton Corp filed Critical Rice Barton Corp
Priority to US429755A priority Critical patent/US3357345A/en
Priority to DE19661486817 priority patent/DE1486817A1/de
Priority to GB4440/66A priority patent/GB1123442A/en
Priority to FR48007A priority patent/FR1466815A/fr
Application granted granted Critical
Publication of US3357345A publication Critical patent/US3357345A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B30B9/20—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 rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
    • B30B9/202—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 rotary pressing members, other than worms or screws, e.g. rollers, rings, discs with co-operating cones
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water

Definitions

  • This invention relates to apparatus for reducing the liquid content of a mixture of liquid and solid material.
  • the invention features in its combination aspect an enclosed system in which a screw filter discharges directly into a disc press.
  • a screw filter discharges directly into a disc press.
  • disc press subcombination of the invention are featured mounting the pair of frustoconcal discs for rotation about axes in the same hori zontal plane, inlet pressure sensing means for varying disc rotation rate, labyrinth disc seals, and a doctor member incorporating a wash water chamber and a knot-removing auger.
  • a shredder comprising a multiplicity of teeth moved to engage the pressed product coming from the disc press.
  • FIG. 1 is a side elevation, to a large extent broken away in vertical section, thereof;
  • FIG. 2 is a section at 22 of FIG. 1;
  • FIG. 3 is a section, broken away, at 3-3 of FIG. 1;
  • FIG. 4 is a partial end elevation
  • FIG. 5 is a broken away sectional view of a portion of the filter screw, taken on a plane through the axis thereof;
  • FIG. 6 is a somewhat diagrammatic view of screw filter showing the head adjustment standpipe in two positions.
  • FIG. 7 shows two screw filters in series.
  • FIG. -1 liquid removing apparatus adapted to, for example, bring solids content of slurries ofpfood fiber in water from 4% or less to 40% or more.
  • the liquid removing apparatus includes a screw filter, indicated generally at 10, secured at its outlet end to a disc press, indicated generally at 12.
  • the screw filter 10 has a stainless steel screw .14 mounted for rotation on shaft 16 carried. by bearings 18 and 20.
  • Bearing 18 is water-lubricated, with a Micarta bushing.
  • Bearing 20 is provided with roller bearings.
  • Screw 14 is in two parts 14a and 14b,,each of which surrounds the shaft 16 for and may easily be disassembled for cleaning or maintenance.
  • bristles 24 of stainless steel Secured all along the helical edge of the main portion 22 of screw 14 are bristles 24 of stainless steel, which define .a helical brush. The outer surface of this brush is ground for .dimensional precision; the length-of the bristles before grinding is indicated (FIG. 5) in dotted lines.
  • the shaft 16 is driven by motor 36 through belt 38. Effective head may also be modified by using standpipe 39, as shown in FIG. 6. Use of more thanone of the screw filters 10 is shown in FIG. 7; such use is facilitated by having the inlet and outlet axes of each filter diverge oppositely from the screw axis.
  • the discs are rotated thereabout by motor 58, which drives them through gears 60, the outer peripheriesof the discs constituting mating bevel gearing.
  • the discs are'held on shafts 59 by locking plates61.
  • Each pressing surface 46 is covered by stainless steel screen 62 (FIG. 1), which is in two symmetrical pieces.
  • the screens are fabricated with the sameconical angle as the disc surfaces 46, the latter being machined (in a final step for accuracy) on discs 44 (which areeach cast in one piece with radial ribs 64 from Meehanite CC acid-resisting iron), so that accurate mating for field assembly is assured.
  • Housing 42 (which includes an upper and a lower portion) includes therearound two sets 66 of labyrinth sealing grooves, each set cooperating with labyrinth sealing projections on one of the discs, to make practical use of the disc press With'tninner slurries.
  • Integral with housing 42 is dependent doctor 70, the sides of which are spaced closely to the screens 62 of the rotating discs. Water lubrication is through holes 71 running at an angle from the wash chamber 72 and opening through the doctor 70 at its surfaces engaged by the screened discs.
  • the doctor 70 includes three depending struts which define with the screens 62, a wash chamber 72 and a knot removal chamber 74. Knots carried by screens 62 into the chamber 74 are rubbed from said screens (FIG.
  • Exit zone 86 is above the area of greatest solids compression (which is along a horizontal plane through the horizontal centerline of the squeezing zone between the discs), so that the outcoming material is allowed to expand transversely as it is leaving. Also, because the zone 86 is thus positioned, the .outcoming product is free to expand upwardly, which it does, facilitating and cooperating with the action of shredder 90, which acts on the emerging bulk to break it into discrete small pieces well adapted for pneumatic transmission therefrom.
  • Shredder 90 which provides uniformity of discharge as well as pellet-sized output, provides 51,000 shredding edges 92 acting against the output solids per minute. Although diagrammatically shown in the drawings, these teeth with shredding edges 92 are in a preferred embodiment set at many different pitches, and are carried by a multiplicity of strands of chains running on sprockets 94 and driven by motor 96 through belt 98. Shredder 90 drives shredded cake away from discpress 12 at about 430 feet per minute. The chains bearing toothed edges 92 run on rolling bearings, and the entire shredder is pivotally mounted on the disc press, both for ease of access and as a safety measure in the event of drive failure to permit cake to emerge freely.
  • Liquid removing apparatus comprising a screw filter with an output zone
  • a disc press having an input zone, horizontal axes of rotation, and e an output zone above said axes,
  • a pressure sensor in said input zone operative to vary the rate of rotation of the discs of the disc press to tend to keep constant the pressure in said input zone
  • said shredder comprising a multiplicity of teeth rapidly and successively engaging the output of said press output zone.
  • said disc press includes a central doctor downwardly dependent between said discs and in close proximity thereto, said doctor comprising a doctor surface and a pair of downwardly extending cavities defining with said discs and the screens thereover a wash chamber and a knot remover.
  • said filter includes a screw and a foraminous cylinder engaged by the outer helical surface of said screw, said outer helical surface being defined by a multiplicity of metal bristles, and in which said filter includes also inlet and outlet members, the axes of symmetry of said inlet and outlet members diverging in opposite directions from the axis of said screw.
  • a disc press comprising a pair of discs mounted for rotation about a pair of axes, said axes intersecting intermediate of said discs in an angle, said discs including facing frustoconical surfaces defining therebetween a pressing zone varying in thickness from a widest thickness in connection with an input zone to a narrowest thickness in connection with an output zone, and a doctor extending between said frustoconical surfaces radially thereof outside said pressing zone, and with transverse surfaces conforming closely with said frustoconical surfaces, said doctor including a radially extending opening in contact through said transverse surfaces with said discs, and a washing fluid supply line to said opening.
  • a disc press comprising a pair of screened discs mounted for rotation about a pair of axes, said axes intersecting intermediate of said discs in an angle, said discs including facing frustoconical surfaces defining therebetween a pressing zone varying in thickness from a widest thickness in connection with an input zone to a narrowest thickness in connection with an output zone, a doctor extending between said frustoconical surfaces radially thereof outside said pressing zone, and with transverse surfaces conforming closely with said frustoconical surfaces, said doctor including a radially extending opening in contact through said transverse surfaces with said screened discs, and a cleaner mounted in said opening, said cleaner being movable in contact with said screened discs to remove knots therefrom and into said chamber.
  • Liquid removing apparatus comprising a disc press with a pair of discs mounted for rotation about a pair of axes intersecting intermediate of said discs in an angle, said discs including facing frustoconical surfaces defining therebetween a pressing zone varying in thickness from a widest thickness in connectionwith an input zone to a narrowest thickness in connection with an output zone, and a shredder mountedat said output zone in spaced relation from said narrowest thickness, said shredder including a multiplicity of shredding surfaces moving rapidly at an angle to the direction of output in said output zone to discharge product in shreds at a different angle.
  • a disc press comprising a pair of discs mounted for rotation about a pair of axes, said axes intersecting intermediate of said discs in an angle, said discs including facing frustoconical surfaces defining therebetween a pressing zone varying in thickness from a widestthickness in connection with an input zone to a narrowest thickness in connection with an output zone, a housing cooperating with each of said discs around the outer opposed peripheries thereof in labyrinth seals, and a doctor extending between said frustoconical surfaces radially thereof outside said pressing zone, and with transverse surfaces conforming closely with said frustoconical surfaces, said doctor including a pair of radially extending openings each in contact through said transverse surfaces with said discs, said doctor being integral with said housing, one of said chambers being provided for access to washing fluid and the other of said chambers having mounted therein a cleaner for movement in contact with said discs to transfer knots therefrom into the last-mentioned chamber.
  • a disc press comprising a pair of screened discs mounted for rotation about a pair of horizontal axes, said axes intersecting intermediate of said discs in an angle, said discs including facing frustoconical surfaces defining therebetween a pressing zone varying in thickness from a Widest thickness in connection with an input zone to a narrowest thickness in connection with an output zone, a housing with peripheries cooperating with facing peripheries of said discs to provide labyrinth seals therearound, said housing including an integral downwardly and radially extending doctor with transverse surfaces conforming closely with said frustoconical surfaces, said doctor in cluding a pair of radially extending openings each in contact through said transverse surfaces with said screened discs, one of said chambers being provided for access to washing fluid and the other having mounted therein for rotation about a generally radial axis an auger contacting said screened discs, a variable speed motor for driving said discs jointly at selectively variable speeds, and a pressure sensor in said input
  • Liquid removing apparatus comprising a screw filter with an output zone
  • a disc press comprising a pair of discs mounted for rotation about a pair of axes intersecting intermediate of said discs in an angle, said discs including facing frustoconical surfaces defining therebetween a pressing zone varying in thickness from a widest thickness in connection with an input zone to a narrowest thickness in connection with an output zone, said input zone being in closed communication with said output zone of said screw filter whereby the fluid pressure at said input zone may be controlled, and
  • a pressure sensor responsive to rate of output through said output zone of said screw filter to decrease the speed of rotation of said discs upon a drop of said rate, whereby substantial reduction of pressure in said input zone is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Paper (AREA)
US429755A 1965-02-02 1965-02-02 Apparatus for liquid removal Expired - Lifetime US3357345A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US429755A US3357345A (en) 1965-02-02 1965-02-02 Apparatus for liquid removal
DE19661486817 DE1486817A1 (de) 1965-02-02 1966-01-31 Fluessigkeitsabscheider
GB4440/66A GB1123442A (en) 1965-02-02 1966-02-01 Apparatus for filtration
FR48007A FR1466815A (fr) 1965-02-02 1966-02-01 Appareil pour l'extraction d'un liquide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US429755A US3357345A (en) 1965-02-02 1965-02-02 Apparatus for liquid removal

Publications (1)

Publication Number Publication Date
US3357345A true US3357345A (en) 1967-12-12

Family

ID=23704613

Family Applications (1)

Application Number Title Priority Date Filing Date
US429755A Expired - Lifetime US3357345A (en) 1965-02-02 1965-02-02 Apparatus for liquid removal

Country Status (3)

Country Link
US (1) US3357345A (de)
DE (1) DE1486817A1 (de)
GB (1) GB1123442A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858505A (en) * 1973-04-06 1975-01-07 Rush Corp Floyd Apparatus for processing food wastes
US20050000917A1 (en) * 2001-07-05 2005-01-06 Pierre Cote Method and apparatus for extracting liquid present in a humid mass
EP3795343A1 (de) * 2019-09-18 2021-03-24 Universitatea Stefan cel Mare Suceava - Romania Drehvorrichtung zur ölextraktion aus ölsaaten

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US772230A (en) * 1903-10-03 1904-10-11 Frank J Farner Compressing and straining machine.
US1630430A (en) * 1926-02-02 1927-05-31 Holter Kristian Sieve plate for screw presses
US2146158A (en) * 1936-04-06 1939-02-07 Charles F Scherer Continuous press
US2327448A (en) * 1940-04-12 1943-08-24 Celanese Corp Speed control for squeeze rolls
US2793583A (en) * 1954-03-01 1957-05-28 Davenport Machine & Foundry Co Continuous press
US3062129A (en) * 1960-08-16 1962-11-06 Wandel Kurt Material feeding unit
US3188942A (en) * 1962-12-05 1965-06-15 Somat Corp Apparatus for disintegrating and dewatering fibrous material
US3218963A (en) * 1963-03-04 1965-11-23 Bauer Bros Co Disc type press

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US772230A (en) * 1903-10-03 1904-10-11 Frank J Farner Compressing and straining machine.
US1630430A (en) * 1926-02-02 1927-05-31 Holter Kristian Sieve plate for screw presses
US2146158A (en) * 1936-04-06 1939-02-07 Charles F Scherer Continuous press
US2327448A (en) * 1940-04-12 1943-08-24 Celanese Corp Speed control for squeeze rolls
US2793583A (en) * 1954-03-01 1957-05-28 Davenport Machine & Foundry Co Continuous press
US3062129A (en) * 1960-08-16 1962-11-06 Wandel Kurt Material feeding unit
US3188942A (en) * 1962-12-05 1965-06-15 Somat Corp Apparatus for disintegrating and dewatering fibrous material
US3218963A (en) * 1963-03-04 1965-11-23 Bauer Bros Co Disc type press

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858505A (en) * 1973-04-06 1975-01-07 Rush Corp Floyd Apparatus for processing food wastes
US20050000917A1 (en) * 2001-07-05 2005-01-06 Pierre Cote Method and apparatus for extracting liquid present in a humid mass
US7166229B2 (en) * 2001-07-05 2007-01-23 Les Industries Fournier Inc. Method and apparatus for extracting liquid present in a humid mass
EP3795343A1 (de) * 2019-09-18 2021-03-24 Universitatea Stefan cel Mare Suceava - Romania Drehvorrichtung zur ölextraktion aus ölsaaten

Also Published As

Publication number Publication date
GB1123442A (en) 1968-08-14
DE1486817A1 (de) 1969-07-17

Similar Documents

Publication Publication Date Title
US4041854A (en) Sludge dewatering
US2365658A (en) Apparatus for the removal of water, liquors, or other liquids from soaked masses of fibrous materials
US3064908A (en) Apparatus for mixing and working material
US2753766A (en) Positive pressure machine for forming continuous strips of fibrous materials
US5106198A (en) Apparatus for treating molten material
US3605607A (en) Band filter press
US3215355A (en) Feed means for a refiner
CA1230996A (en) Method and apparatus for manufacturing fibre pulp
US3357345A (en) Apparatus for liquid removal
US3092338A (en) Pulp refining apparatus
JPH01194948A (ja) 研削材料を粉砕圧縮するスクリューミル
KR900000908B1 (ko) 1차 탈수된 슬러지편의 탈수장치
US3086454A (en) Continuously operating press apparatus
US3021782A (en) Dewatering device and pressure feeder
KR860001616B1 (ko) 정제기
CN216048748U (zh) 一种液压式肉块滚压机
US2715871A (en) Pulp press
US3176607A (en) Continuous filter
US2499412A (en) Filtering method and apparatus
US4000073A (en) Continuous discharge centrifuge
AU534184B2 (en) Preparing paper pulp
US2293297A (en) Squeezing device for plastic and semplastic masses
CN112725949A (zh) 一种用于精制棉的输送设备
US3460466A (en) Press structure
US2609744A (en) Press construction