EP0252025B1 - An improved extractor of oil from oily seed or fruit pastes and the like - Google Patents

An improved extractor of oil from oily seed or fruit pastes and the like Download PDF

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Publication number
EP0252025B1
EP0252025B1 EP87830230A EP87830230A EP0252025B1 EP 0252025 B1 EP0252025 B1 EP 0252025B1 EP 87830230 A EP87830230 A EP 87830230A EP 87830230 A EP87830230 A EP 87830230A EP 0252025 B1 EP0252025 B1 EP 0252025B1
Authority
EP
European Patent Office
Prior art keywords
tank
blades
longitudinal
slits
comb
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
EP87830230A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0252025A3 (en
EP0252025A2 (en
Inventor
Ezio Rapanelli
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.)
RAPANELLI FIORAVANTE SpA
Original Assignee
RAPANELLI FIORAVANTE SpA
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 RAPANELLI FIORAVANTE SpA filed Critical RAPANELLI FIORAVANTE SpA
Priority to AT87830230T priority Critical patent/ATE59601T1/de
Publication of EP0252025A2 publication Critical patent/EP0252025A2/en
Publication of EP0252025A3 publication Critical patent/EP0252025A3/en
Application granted granted Critical
Publication of EP0252025B1 publication Critical patent/EP0252025B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B1/00—Production of fats or fatty oils from raw materials
    • C11B1/06—Production of fats or fatty oils from raw materials by pressing

Definitions

  • the present invention concerns a tank extractor for the separation of the oil or juice from oily seed or fruit pastes, more in particular, from olive paste, and in the inside of which two rotors having helicoidal blades rotate, one in clockwise, the other in counterclockwise direction respectively and in interlacing portions of said tank, which is provided with perforated bottom walls for the discharge of the oil therethrough and which comprises a longitudinal central bottom channel into which a screw member rotates in order to discharge the treated oily paste.
  • Extractors for the separation of the oil from oily pastes and hte like of the press type are already known, as well as other apparatus of extractive type which treat the paste by means of one or two rotors provided with helicoidal blades in the inside of a tank having perforated bottom.
  • the large part of said known apparatuses are designed to treat the paste in batches so that, at predetermined time intervals, the apparatuses have to be stopped and the treated paste has to be discharged, in general, by overturning the tank.
  • Said extractors of the known type have a reduced yield and require frequent cleaning operations of the oil discharge holes which are often obstructed by the paste.
  • LU-A-51045 is also known that concerns an apparatus in which a continuous process is applied for the separation of oil from oil palm fruit pulp, subjecting said oil palm pulp to a pressing method in the inside of the tubular treating chamber along which said pulp is caused to be pushed forwards.
  • Said chamber is defined by a tubular wall open at its ends and having the shape of two partial circular cylinder sectors each having an angular amplitude slightly higher than 180° so as to have a generally oval cross section.
  • the cylinder sectors have parallel axes, spaced apart from one another less than the radius of said cylinders. Along said axes parallel shafts, having interfitting helicoid surfaces are mounted, which rotate in opposite directions.
  • Holes or slits are arranged through the treatment chamber wall for the escaping of the oil expressed from the oily pulp by passage over helicoid pressing surfaces.
  • Said separation system of the oil from the oily pulp, under the effect of a high pressure, has the disadvantage that this system causes an undesired overheating of the oil.
  • the present invention relates to a tank extractor having an automatic charge and an automatic discharge of the treated paste, at the end of the extraction cycle, by means of a bottom channel into which a rotating screw operates so that this apparatus requires very short dwell of time.
  • the tank is open; this latter has a parallelopiped shape, rectangular in plan view, while at its lower part it comprises a bottom wall consisting of two sections of cylinders of a circular cross section, having parallel axes, said cylinders partially interpenetrating one into the other and at the central lower part they are connected to a longitudinal channel, semicircular in cross section, into which a discharge screw operates, said tank being intermittently fed by two superimposed kneading tanks.
  • the tank has a form symmetric with respect to a longitudinal vertical plane X-X.
  • the tank is provided with two longitudinal shafts, each respectively connected to a transmission assembly, adapted to cause said two shafts to rotate contemporaneously in opposite directions.
  • One of said shafts supports pairs of helicoidal blade lengths, radially extending nearly up to the tank walls, said blade lengths having opposite rotation directions and being spaced apart from each other so that other pairs of blade lengths can operate in interlacing condition therebetween, which are mounted about the other rotating shafts, said helicoidal blade lengths having respectively an opposite winding arrangement as compared with that of the blade lengths mounted on the first shaft.
  • the lengths of helicoidal blades of the first rotating shaft are designed to act along the respective work surface shaped as a sector of a cylinder of a circular cross section, said cylinder sector having an angular amplitude lightly lesser than 180° and identically the blade lengths of the second shaft extend within an equal angle, but said blade lengths are mounted so as to be able to act on the oily paste at alternating time periods, i.e. they are dephased with respect to the preceding ones, so that said helicoidal blade lengths alternatively press the oily paste towards the outside or towards the longitudinal center plane of the tank as well as to and from the tank heads, thus causing an intimate squeezing and mixing of the paste, thus promoting the removal of the oil from the oily paste or pulp.
  • the lower cylindrical tank portions are constructed as separated segments or subsectors of a cylindrical wall and are provided with longitudinal rows of slits extending in planes perpendicular to the axes of the shafts supporting the helicoidal blades and the comb-like members, these latter being provided with teeth duly spaced apart from each other by means of interposed slots so positioned as to respectively face said wall slits.
  • slits are designed to move to and from rows of vertical flat small baldes carried by longitudinal bars, mounted on the outside of the tank, each bar being supported by pairs of radial arms which can reciprocate radially so as to cause said rows of small blades to enter from the outside through said slits so as to disobstruck and clean these latter from the paste inserted therein, while during their return stroke said small blades entrain together the oil towards the outer space, where the oil drips down under the effect of the force of gravity.
  • the small blades and the wall slits are so mutually positioned that, during the sliding of each comb-like member provided with teeth, said small blades can enter into the slots comprised between each pair of adjacent teeth of the comb-like member so as to clean the respective tooth slots, thus maintaining the elasticity of the respective comb-like member.
  • each tank head mounted on the outside of each tank head and which are designed to support and reciprocate radially each assembly of small blades, are actuated respectively by a respective came device designed to cause that one of the blade assemblies, in turn, performs radial reciprocating strokes according to a predetermined sequence with respect to those of the adjacent blades series.
  • the improved extractor of the invention has a higher yield as compared with those of the known machines and it permits to treat greater amounts of oily paste with a remarkably increased yield per hour.
  • the tank extractor which is object of the present invention, is advantageously employed in an extraction plant of the oil from oily seeds or fruits, as olives and the like, in order to perform the first extraction of the oil from the oily paste, said tank extractor being mounted underneath kneading or breaking machines which are fed by a mill unit of the olives conveyed therein through a feeding hopper.
  • Said extractor consists of a tank, substantially rectangular in a plan view, generally indicated 1; near one of the heads 1t of said tank, kneading machines are mounted (not shown in the drawings, since they are of a well known type), said machines feeding the oily paste into the extractor tank 1.
  • Said tank 1 at its upper part has longitudinal vertical walls 1a and has a shape which is symmetric with regard to the longitudinal vertical plane X-X.
  • the lower part 1 b of the tank 1 consists of two walls each having the shape of a sector of a cylinder, circular in cross section, said cylinders have longitudinal axes Y-Y and Z-Z respectively, which are spaced apart from each other of a distance lesser than the radius of these cylinders so that the inner spaces defined by the two cylinders mutually interpenetrate themselves beyond the plane X-X.
  • the walls 1b shaped in the form of sectors of circular cylinders, having the axes Y-Y and Z-Z respectively, are constituted of cylinder sub-sectors or lengths 3.
  • Each sub-sector or length 3 is provided with two longitudinal rows of through slits 5, each slit extending in a plane perpendicular to the respective axis Y-Y and Z-Z; these slits 5 pass through the wall of the sub-sector or length 3, since through said slits 5 is designed to be discharged the oil that will be separated from the oily paste.
  • pairs of lengths of helicoidal blades 11 a are mounted, designed to work near the inner surface of the cylindrical wall 1b, placed on the left hand in Figure 1.
  • the two lengths 11 a of the respective blades of the respective pairs have opposite operative directions and extend through a cylindrical sector lesser than 180°, said blade lengths 11 a being spaced apart one from the other parallely to the axis Y-Y.
  • Said blade lengths 11 b are wound in opposite operative directions, either with respect to one another and to the adjacent blade lengths 11 a.
  • the blade lengths 11 b operate in a cylindric sector of an angular amplitude substantially equal, but dephased with respect to that in which the blade lengths 11 a operate.
  • a longitudinal bar 4a is also supported which carries, a comb-like member 7a extending towards the outside, and provided with teeth 28, (Fig. 6), said comb-like member being made of an elastomeric material, as rubber or the like, and being so dimensioned as to be able to slide by means of their teeth 28 in contact with the wall 1 b at the left hand of Figure 1.
  • the teeth 28 are spaced apart from each other by slots so positioned as to present themselves just in aligned facing relationship with the ends of the slits during the rotation of the shaft 10a.
  • Identically radial arms 13b made integral with the shaft 10b carry a bar 4b supporting a comb-like member 7b provided with teeth 28 arranged and proportioned as the preceding described one.
  • Each device 6 generally indicates a device associated to each wall sub-sectors or length 3.
  • Each device 6 comprises two parallel radial arms 14a or 14b supporting longitudinal bar 8a or 8b, each of which, in this embodiment, supports two pluralities of small blades 9, each blade being so dimensioned and arranged as to be able to enter one split 5a or 5b or to come out therefrom as a result of the reciprocating strokes of the pairs of radial arms 14a or 14b, which are arranged out of the heads 1t of the tank, in a radial disposition with respect to the respective axis Y-Y or Z-Z of the shaft 10a or 10b.
  • each disc 15a or 15b by means of a series of rolling rollers 16 can rotate in the inside of a peripheral ring 17a or 17b, to which, by means of hinge pins 18, the flattened ends 14a' or 14b' of the arms 14a or 14b are articulated respectively.
  • the pairs of arms 14a or 14b in sequence cause the devices 6a, 6b to perform in sequence reciprocating strokes or radial translation, so that the pairs of rows of small blades 9a and 9b come into and out the slits 5a or 5b.
  • the entrance stroke they disobstruct the slits 5a, 5b, and during the exit stroke, they entrain the oil towards the outside, owing to an adhesion effect, where said oil under the force of gravity, falls down into a suitable collecting container.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Fats And Perfumes (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Edible Oils And Fats (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP87830230A 1986-06-24 1987-06-19 An improved extractor of oil from oily seed or fruit pastes and the like Expired - Lifetime EP0252025B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87830230T ATE59601T1 (de) 1986-06-24 1987-06-19 Extraktionsanlage fuer oel aus oelhaltigen saatoder fruchtpasten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT48181/86A IT1191971B (it) 1986-06-24 1986-06-24 Estrattore perfezionato dell'olio da paste di simi e frutti oleosi o simili
IT4818186 1986-06-24

Publications (3)

Publication Number Publication Date
EP0252025A2 EP0252025A2 (en) 1988-01-07
EP0252025A3 EP0252025A3 (en) 1988-04-20
EP0252025B1 true EP0252025B1 (en) 1991-01-02

Family

ID=11265050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830230A Expired - Lifetime EP0252025B1 (en) 1986-06-24 1987-06-19 An improved extractor of oil from oily seed or fruit pastes and the like

Country Status (6)

Country Link
EP (1) EP0252025B1 (it)
AT (1) ATE59601T1 (it)
DE (1) DE3766895D1 (it)
ES (1) ES2020301B3 (it)
GR (1) GR3001661T3 (it)
IT (1) IT1191971B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013672A2 (en) * 1990-03-06 1991-09-19 Abel Guenther Apparatus for separating liquids and solids
WO1999004655A1 (en) * 1997-07-21 1999-02-04 Rolando Colantoni A continuous cycle separator-decanter device for the industrial production of olive oil

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2140259B1 (es) * 1996-04-09 2000-10-16 Moreno Juan Lopez Termo-batidora para masa de aceitunas.
ITRM20020406A1 (it) * 2002-07-31 2004-02-01 Rapanelli Fioravante Spa Macchina di estrazione dell'olio da una pasta di olive o altri frutti oleosi.
CN115253375B (zh) * 2022-08-01 2023-07-25 湖南新有爱农业有限公司 一种山苦瓜素提取工艺及装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705562A (en) * 1953-12-18 1955-04-05 Floyd E Albertson Vacuum filter
DE956538C (de) * 1955-05-13 1957-01-17 Maquinaria Espanola Oleicola M Selbsttaetig filterndes Gewinnungsgeraet fuer pflanzliches OEl
US3021782A (en) * 1959-03-27 1962-02-20 Baur Bros Co Dewatering device and pressure feeder
DE1577272A1 (de) * 1966-04-09 1971-10-07 Wecker Sarl Usine Doppelschneckenpresse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013672A2 (en) * 1990-03-06 1991-09-19 Abel Guenther Apparatus for separating liquids and solids
WO1991013672A3 (en) * 1990-03-06 1991-12-12 Abel Guenther Apparatus for separating liquids and solids
WO1999004655A1 (en) * 1997-07-21 1999-02-04 Rolando Colantoni A continuous cycle separator-decanter device for the industrial production of olive oil

Also Published As

Publication number Publication date
EP0252025A3 (en) 1988-04-20
IT1191971B (it) 1988-03-31
ES2020301B3 (es) 1991-08-01
ATE59601T1 (de) 1991-01-15
EP0252025A2 (en) 1988-01-07
IT8648181A0 (it) 1986-06-24
DE3766895D1 (de) 1991-02-07
GR3001661T3 (en) 1992-11-23

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