US3529541A - Presses - Google Patents

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Publication number
US3529541A
US3529541A US712159A US3529541DA US3529541A US 3529541 A US3529541 A US 3529541A US 712159 A US712159 A US 712159A US 3529541D A US3529541D A US 3529541DA US 3529541 A US3529541 A US 3529541A
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US
United States
Prior art keywords
facing
bars
press
lining
bar
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
US712159A
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English (en)
Inventor
Joseph Allan Ward
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.)
Lukens Corrosion Protection Services Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3529541A publication Critical patent/US3529541A/en
Anticipated expiration legal-status Critical
Assigned to LUKENS CORROSION PROTECTION SERVICES, INC. reassignment LUKENS CORROSION PROTECTION SERVICES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: GSI ENGINEERING INC.
Expired - Lifetime legal-status Critical Current

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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
    • B30B9/26—Permeable casings or strainers
    • 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
    • B30B9/26—Permeable casings or strainers
    • B30B9/267—Strainer bars; Spacers

Definitions

  • the lining bar is of composite construction having a metal body carrying a facing of a hard, wear-resisting, non-metallic material, preferably a ceramic.
  • the metal body provides the bar with the requisite strength, while the facing, which comes in contact with the material being pressed, has the requisite resistance to erosion.
  • This invention relates to presses in which material is separated from associated liquid by the material being pressed against lining bars with spacing therebetween which permits the liquid, but not the material, to pass therethrough.
  • the invention also relates to lining bars for such a press which will hereinafter be referred to as of a press of the type described.
  • a conventional press of the typedescribed can be, for example, a screw press in which a screw is mounted coaxially within a cylindrical cage formed by closely spaced lining bars which extend longitudinally of the cylindrical cage.
  • the screw thread which may be interrupted at intervals, is spaced closely from the bars.
  • Material is fed into the cage and is carried along by the screw which has a decreasing pitch toward the discharge end of the press.
  • Knife bars are provided in the cage to prevent the material from being carried round with the turning screw which increasingly presses the material against the bars, as the material advances through the press, so that the liquid to be separated from the material passes through the spaces for collection, if required, and the material, with a very high percentage of the liquid having been removed, is discharged at the exit end of the cage.
  • Conventional bars are generally made of steel with a hard facing of Stellite" (which is a trademark under which a hard, wear-resistant, corrosion resistant alloy is marketed) on their surfaces facing inwardly of the cylindenSuch bars are relatively expensive to produce and are subject to wear notwithstanding the hardness ofthe Stellite".
  • Stellite which is a trademark under which a hard, wear-resistant, corrosion resistant alloy is marketed
  • a lining bar for a-press of the typedescribed comprises a metalbody and, a facing of a hard, wear-resisting, non-metallic material secured a to the metal body to come into contact withthe pressed material.
  • the facing is made from a composition comprising a high percentage of alumina, e.g. 85 to l;percent with any balance being a compatible vitrifledceramic material;
  • the facing may alternatively be, a glass or other composition comprising a high percentage of silica, e.g, at least 70 percent, the balance being e.g. alumina, calcium oxide, sodium oxide, potassium oxide and/or an oxide of boron.
  • a glass or other composition comprising a high percentage of silica, e.g, at least 70 percent, the balance being e.g. alumina, calcium oxide, sodium oxide, potassium oxide and/or an oxide of boron.
  • vitreous enamels and those comprising an extremely abrasion resistant material, e.g. silicon carbide, embedded in a softer matrix, e.g. of a ceramic material.
  • an extremely abrasion resistant material e.g. silicon carbide
  • the lining bars having a ceramic composition are, in general, subject to less wear than conventional bars. They can, if desired, be designed to be reground when eventual wear occurs, give rise to minimal contamination of the material contacted and can be finished so that a low coefficient of friction obtains between them and the material being processed. It is. also possible to vary the coefficient by varying the finish of the' bars. Furthermore, the coefficient of friction tends to remain constant throughout the life of a bar.
  • the facing can be bonded, keyed or screwed to the body and may consist of a number of elements which abut one another to make up the complete facing to allowthe bar to flex slightly in service; where bonding is employed this can be effected using Aral'dite which is a trademark under which an adhesive is marketed.
  • the invention includes a press of the type described with FIG. 1 is a side view of a press lining bar
  • FIG. 2 is a lateral cross-section of the bar, takenon line II+II ifFIG. 1.
  • FIG. 3 is an elevation of the feed end of a press of the type described, for separating oil from oil seed, with lining bars as in FIGS. 1 and 2, and
  • FIG. 4 is a view on the line lV-IV of FIG. 3 showing linings in the feed end only of the press.
  • the lining bar 1 shown in FIGS. 1 and 2 is of composite construction, having a steel body 19 with a facing of a hard and wear-resisting, non-metallic, material.
  • the upper face of the steel body as seen in FIGS. I and 2, is formed with a shoulder 20 which extends the full length of the bar, while integral wedge-like lands 21 project from one side at intervals along the bar.
  • The: facing is constituted by a series of relatively short, abutting, facing elements 22, each of which has one face formed with a shoulder mating with the shoulder 20 of the steel body. As shown in FIG. 2, the facing has a chamfer on its side face at 23.
  • the material of the facing elements 22 is preferably the Idustrial Ceramics Limitedandmarketed by them under their registered trademark Regalox" and which consists of the percent alumina body composition No. 5084/ l.
  • the elements are produced by pressing, e.g. using an isostatic press at a pressure of 15,000 p.s.i. or by extrusion..- While the Regalox" ceramic is thepreferred material for the facing elements, other hard and wear-resisting non-metallic material capable of withstanding thefrigorous conditions of a press may be employed; for examplethere may be used glass and other silica compositions, containing at least 70 percent silica, with the balance made up of alumina, calcium oxide, sodium oxide,
  • extremely abrasion-resistant materials such as silicon carbide embeddedin a softermatrix of for example a ceramic material.
  • the lining bars 1 have shims, not shown, which are arranged between adjacent bars and which provide clearances between bars for the passage of oil while preventing the escape of seeds and other solids.
  • the shims which may for example be 5 to 60 thousands of an inch thick according to the material to be pressed, are arranged between the lands 21 of one bar and the contiguous face,24 of the metal body of the adjacent bar. In thisway the shims do not contact or damage the ceramic facing elements 22.
  • the lining bars land the shims are held in very tight contact between diametrically opposed key bars 7 on the horizontal diameter of cage, with their adjacent gib bars 8, and shoe bars 9, a pair ofwhich is disposed at the bottom of each barrel ring 4 and a-pair at the top thereof.
  • the shoe bars 9 are held by struts and nuts 10 in position on the barrel rings.
  • Knife bars are disposed-between each pair of shoe bars 9, with blades of the knife bars extending at intervals radially inwardly to prevent unwanted rotation of the material being treated.
  • the halves4a and 4b of each barrel ring 4 are pivotally secured at their bases by pivot pins 11 and clamping bolts and nuts 12 with clamping bars, 13.
  • the halves are held together rigidly at their tops by clamping bars 14 and bolts and nuts 15.
  • v Pins 16 which are used to lift the barrel rings are disposed in upper holes in the barrel ring halves.
  • Pivot pins 17, in holes in a horizontal middle line of the barrel ring halves in FIG. 3 carry stirrups 18 which aremerely usedto support the lower clamping'bars 13 during assembly.
  • the barrel rings 4 are enclosed in a cylindrical housing which acts as a manifold for collecting the liquid expelled through the spaces between the lining bars 1.
  • a screw is arranged axially of the cylindrical cage 3 in the manner described in the introduction to this specification.
  • the lining bars are so arranged in relation to the sense of rotation of the screw that the thrust applied by the pressed material to the facing 22 is in the right to left direction as viewed in FIG. 2.
  • the thrust is thus transmitted to the steel body 19 through the abutting shoulders and not through the bonding adhesive.
  • the facing is made up of a number of short facing elements, the metal body 19 is capable of limited flexure under the loading without applying excessive damaging shear forces to the facing elements.
  • Material is fed and discharged through conventional means into and from the press in the direction of the arrows in FIG. 4.
  • a lining bar for a rotary press comprising an elongate metal body and a facing of a hard, wear-resisting, non-metallic material surmounting and secured to the metal body over substantially the entire length of the body, said metal body being formed with at least one abutment surface engaged by a complementary surface on the facing to resist shear forces imposed on the facing during the action of the press and tending to break the attachment between the facing and the body.
  • a lining bar for a press of the type described comprising an elongate metal body having on one face a step extending substantially the entire length of the body and a correspondingly stepped facing secured to that face, the facing being of a hard, wear-resisting, non-metallic material.
  • a screw press having a barrel constituted by a plurality of parallel lining bars, each of which comprises an elongate, substantially rectilinear, metal body having an abutment surface formed on its innermost face, and a facing of a hard, wear-resisting, non-metallic material surmounting and secured to said innermost face and having a complementary surface engaging said abutment surface to resist shear forces imposed on the facing during the action of the press and tending to break the attachment between said facing and said body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Lubricants (AREA)
US712159A 1967-03-15 1968-03-11 Presses Expired - Lifetime US3529541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB02051/67A GB1192761A (en) 1967-03-15 1967-03-15 Presses and Components Thereof

Publications (1)

Publication Number Publication Date
US3529541A true US3529541A (en) 1970-09-22

Family

ID=9997542

Family Applications (1)

Application Number Title Priority Date Filing Date
US712159A Expired - Lifetime US3529541A (en) 1967-03-15 1968-03-11 Presses

Country Status (4)

Country Link
US (1) US3529541A (enrdf_load_stackoverflow)
DE (1) DE1627961A1 (enrdf_load_stackoverflow)
FR (1) FR1564103A (enrdf_load_stackoverflow)
GB (1) GB1192761A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696736A (en) * 1970-04-01 1972-10-10 Hans Studll Worm housing for double worm press
US4028027A (en) * 1974-05-16 1977-06-07 Werner & Pfleiderer Screw housing for a screw machine
US5368383A (en) * 1991-09-02 1994-11-29 Julius Peter Apparatus for producing rubber mixtures
WO2007121699A1 (de) * 2006-04-25 2007-11-01 Harburg-Freudenberger Maschinenbau Gmbh Vorrichtung zum pressen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8419501A0 (it) * 1983-03-23 1984-02-08 Berstorff Gmbh Masch Hermann Pressa a vite per l'estrazione dell'acqua presentante fessure di separazione per l'estrazione dell'acqua nella quale vengono ottenuti contenuti di materiale secco molto elevati mediante una pressione fino a 500 bar.
EP0956942A1 (de) * 1998-05-12 1999-11-17 Günter Dipl.-Ing. Hasenbein Seiherstab für Seiherkorb einer Schneckenpresse
DE10349771A1 (de) * 2003-10-24 2005-05-25 Thyssenkrupp Elastomertechnik Gmbh Seiherstab mit Distanzelement sowie Vorrichtung zum Abpressen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696736A (en) * 1970-04-01 1972-10-10 Hans Studll Worm housing for double worm press
US4028027A (en) * 1974-05-16 1977-06-07 Werner & Pfleiderer Screw housing for a screw machine
US5368383A (en) * 1991-09-02 1994-11-29 Julius Peter Apparatus for producing rubber mixtures
WO2007121699A1 (de) * 2006-04-25 2007-11-01 Harburg-Freudenberger Maschinenbau Gmbh Vorrichtung zum pressen

Also Published As

Publication number Publication date
GB1192761A (en) 1970-05-20
FR1564103A (enrdf_load_stackoverflow) 1969-04-18
DE1627961A1 (de) 1971-02-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LUKENS CORROSION PROTECTION SERVICES, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:GSI ENGINEERING INC.;REEL/FRAME:004860/0381

Effective date: 19870612