EP0569695B1 - Apparatus for separating liquid and solid substances, in particular for extracting juice from fruit and the like - Google Patents

Apparatus for separating liquid and solid substances, in particular for extracting juice from fruit and the like Download PDF

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Publication number
EP0569695B1
EP0569695B1 EP93105300A EP93105300A EP0569695B1 EP 0569695 B1 EP0569695 B1 EP 0569695B1 EP 93105300 A EP93105300 A EP 93105300A EP 93105300 A EP93105300 A EP 93105300A EP 0569695 B1 EP0569695 B1 EP 0569695B1
Authority
EP
European Patent Office
Prior art keywords
tank
product
drum
pressure
pressing
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
EP93105300A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0569695A3 (es
EP0569695A2 (en
Inventor
Paolo Rondina
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.)
Siprem International Srl
Original Assignee
Siprem International Srl
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 Siprem International Srl filed Critical Siprem International Srl
Publication of EP0569695A2 publication Critical patent/EP0569695A2/en
Publication of EP0569695A3 publication Critical patent/EP0569695A3/xx
Application granted granted Critical
Publication of EP0569695B1 publication Critical patent/EP0569695B1/en
Anticipated expiration legal-status Critical
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
    • B30B9/22—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 a flexible member, e.g. diaphragm, urged by fluid pressure

Definitions

  • the present invention relates to an apparatus for separating liquid and solid substances, in particular for extracting juice from fruit and the like.
  • Grape presses which are constituted by a tank divided into a pressure chamber and into a pressing chamber by means of a flexible membrane.
  • the product to be processed is fed into the pressing chamber, and the pressure chamber is fed with pressurized fluid (air or water) so that the membrane acts on the product and presses it.
  • pressurized fluid air or water
  • the process provides for various pressing cycles at variable pressure, and the tank can rotate in order to allow better draining of the product.
  • Both the high pressure and the vacuum presses ensure optimum processing of the product, but they have the severe disadvantage, from the point of view of production, that they cannot be fed continuously.
  • the processing cycle in fact entails that the press must be loaded with a preset amount of product, which is subjected to a certain number of pressing cycles. Only after the depleted product has been discharged, and after the optional washing, is it possible to perform a new loading operation and thus a new processing cycle.
  • Presses which are capable of operating with a continuous feed; these presses are substantially constituted by a screw rotating inside a cylinder. The product is loaded at one end of the cylinder, and the depleted product is extracted at the other end. The quality of the product which can be obtained with this type of press, however, is poor, so that these presses are not normally used except for particular purposes.
  • a European Patent Application No. 0341098 discloses a press constituted by a drum having a plurality of chambers each having a membrane and an independent source of pressure.
  • a means for moving the product to be pressed is constituted by an Archimedean screw supported by a shaft. The shaft rotates independently from the drum.
  • the aim of the present invention is to provide a grape press which can operate continuously and provides, at the same time, high quality of the obtainable product.
  • an object of the invention is to provide a press which operates with the principle of membrane presses, both with the high-pressure system and with the low-pressure, or vacuum, system.
  • Another object of the invention is to provide a press which can operate according to any type of processing cycle required.
  • the press generally designated by the reference numeral 1, comprises a container or tank 3, which is preferably cylindrical and has a horizontal axis.
  • the tank comprises supporting means for a rotation of the tank about the horizontal axis and are constituted for example by pairs of wheels 5 for supporting the tank at rolling guides 7.
  • the rotation of the tank is actuated by a gearmotor 9 in a per se known manner.
  • the tank 3 comprises a plurality of partitions 11 which have a substantially half-elliptical shape and are arranged so as to define a series of pressure chambers 13.
  • the pressure chambers comprise a membrane 15 which has a substantially half-cylindrical shape and is fixed to the lower edges of each adjacent partition and to the two sides of the tank.
  • a pressurized fluid supply system comprises a manifold 17 and a series of inlets 19, controlled by respective valves, for the respective pressure chambers 13.
  • the lower region of the tank comprises a plurality of channels 21 which are arranged so as to define a series of contiguous pressing chambers or regions; in the case shown in the figures, three pressing regions 23, 25 and 27 are defined and are advantageously separated by semi-annular dividing walls 29.
  • the discharge channels 21 are connected to discharge ducts, respectively 31, 33 and 35, which correspond to the respective pressing regions 23, 25 and 27.
  • the tank finally comprises an inlet for the product to be pressed, which is advantageously constituted by a valve 37 arranged at one end of the tank, and a door 39 for the discharge of the depleted product, which is arranged substantially at the opposite end.
  • the apparatus according to the invention can operate both conventionally with fluid (air or water) at high pressure, and with the low-pressure system, substantially as described in the above mentioned Italian patent application no. MI91U000603.
  • the product to be processed is introduced, by means of the valve 37 and through the filling chamber 12, into the first pressing region 23 of the tank 3, at the first one of the pressure chambers 13.
  • the discharge duct 31 By means of the discharge duct 31, low pressure is created in the first pressing region, whereas a slight overpressure may be created in the first one of the pressure chambers by sending air through the duct 17 and the respective inlet 19.
  • the membrane 15 of the first one of the pressure chambers thus acts on the product and presses it, and the extracted liquid substance flows out through the channels 21 and the discharge duct 31.
  • the tank 3 is rotated through 360° so that the product is collected between the partitions 11, which constitute the first pressure chamber, and is moved forward until it arrives at the second pressure chamber. At this point, the tank is in pressing position again, further product is fed through the valve 37, and a second pressing cycle is performed on the old product while a first pressing cycle is performed on the freshly loaded product.
  • the product advances toward the bottom of the tank, until it arrives in the last pressing region where, being depleted, it is discharged through the discharge door 39, while fresh product is continuously loaded at the inlet 37.
  • the discharge ducts 31, 33 and 35 are connected to respective sets of discharge channels for a differentiated separation of the product, and the pressing regions are advantageously separated by the dividing walls 29. It is apparent that the radial dimensions of the dividing walls, and the number of differentiated pressing regions, can vary according to the requirements.
  • Rotation of the tank in addition to ensuring the advancement of the product, allows optimum draining; furthermore, the differentiated discharges allow to easily separate the first-choice product, which leaves the first outlet or outlets, from the products of progressively lower quality which exit from the outlets close to the end of the tank which is opposite to the loading end.
  • a press 101 according to a further embodiment, of the invention is schematically shown in Fig. 4 wherein like reference characters, added by 100, denote similar features to those of Figures 1-3.
  • Press 101 is provided with a tank 103 having a truncated cone shape with its larger flat face at the loading end.
  • This configuration in fact allows to contain the product more easily as its volume decreases, as the liquid portion is progressively eliminated, reducing the pressing cycle times.
  • the spacing of the partitions may also be reduced progressively toward the discharge end of the tank.
  • Fig. 5 shows a press 201 according to still a further embodiment of the invention.
  • Press 201 comprises a plurality of partitions 211 forming a plurality of pressure chambers 213.
  • Each pressure chamber 213 has a membrane 215 and is fed by a respective inlet 219, provided with an adapted valve and connected to a manifold 217.
  • the portion of the tank which is not affected by the pressure chambers is constituted by perforated plates 221 defining a plurality of pressing regions 227 corresponding to respective pressure chambers.
  • Drain trays 230 are provided underneath the tank 203 which is supported by wheels 205 and is adapted to rotate about an horizontal axis by means of a gearmotor 209.
  • the loading end of the tank (at the left end side with reference to Fig. 5) is provided with a pre-chamber, or loading chamber, constituted by a drum made of perforated plate and connected to the main portion of the tank so as to be rotatable independently.
  • Drum 233 is connected to the main tank 203 at the rotatable joint 239 and is provided with an independent gearmotor 241 and with the loading valve 237 for feeding the product to be pressed.
  • the drum 233 is provided with an Archimedean screw 243 adapted to move the product forward as the drum is rotated by means of the gearmotor 241.
  • the press illustrated in Fig. 5 is particularly adapted to operate with the high pressure system, wherein pressurized fluid is independently fed into the pressure chambers 213 causing the membrane 215 to press the product contained in the pressing regions 227.
  • the liquid portion of the product exits the tank through the perforated plate and is gathered into the drain trays 230.
  • the drum Before entering the main tank the product is "statically" drained in the loading chamber, or drum, 233: without applying any pressure to the product, the drum is rotated by the gearmotor 241 and, while the product is fed into the main tank 203, a certain amount of liquid is drained into the drain tray 230 through the perforated plate 221 of the drum 233.
  • the materials employed, as well as the dimensions, may be any according to the requirements and the state of the art.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP93105300A 1992-05-13 1993-03-30 Apparatus for separating liquid and solid substances, in particular for extracting juice from fruit and the like Expired - Lifetime EP0569695B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI921135 1992-05-13
ITMI921135A IT1258913B (it) 1992-05-13 1992-05-13 Apparecchiatura per la separazione di sostanze liquide e solide,in particolare per l'estrazione di succo dalla frutta e simili

Publications (3)

Publication Number Publication Date
EP0569695A2 EP0569695A2 (en) 1993-11-18
EP0569695A3 EP0569695A3 (es) 1994-02-09
EP0569695B1 true EP0569695B1 (en) 1996-11-20

Family

ID=11363270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105300A Expired - Lifetime EP0569695B1 (en) 1992-05-13 1993-03-30 Apparatus for separating liquid and solid substances, in particular for extracting juice from fruit and the like

Country Status (4)

Country Link
EP (1) EP0569695B1 (es)
DE (1) DE69306035D1 (es)
ES (1) ES2096127T3 (es)
IT (1) IT1258913B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20020280A1 (it) * 2002-02-14 2003-08-14 Dario Bonazzoli Pressa per la spremitura di prodotti agricoli in particolare uva frutta e simili
EP2342071A1 (en) * 2008-11-05 2011-07-13 VELO Spa Pressing method and press
ITMI20121273A1 (it) * 2012-07-23 2014-01-24 Bonazzoli Dario Maria Apparecchiatura per la spremitura di prodotti agricoli in particolare uva frutta e simili costituita da due unita' poste in sequenza: la prima di sgrondo pressatura in un serbatoio verticale dove avviene la prima spremitura in maniera statica e in am
ITPN20130062A1 (it) * 2013-10-16 2015-04-17 Tmci Padovan S P A Pressa per prodotti ortofrutticoli e relativo metodo di pressatura
EP3852549A1 (en) * 2018-09-21 2021-07-28 Della Toffola S.p.A. Plant and method for the extraction of juice from vegetable raw material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU555585B2 (en) * 1982-06-29 1986-10-02 Josef Willmes Gesellschaft Mit Beschrankter Haftung Screw-membrane liquid expression press
FR2530424B1 (fr) * 1982-07-23 1987-11-13 Binner Joseph Presse a fruits a membranes
DE3243105A1 (de) * 1982-11-22 1984-05-24 Josef Willmes Gmbh, 6140 Bensheim Vorrichtung zum kontinuierlichen extrahieren von fluessigkeitshaltigen stoffen
DE3440558A1 (de) * 1984-11-07 1986-05-07 Karl-Heinz 7801 Ballrechten-Dottingen Quetsch Presse zum auspressen von fluessigkeitshaltigen stoffen
FR2629754B1 (fr) * 1988-04-11 1992-12-24 Gregoire Ets Pressoir pneumatique

Also Published As

Publication number Publication date
ITMI921135A1 (it) 1993-11-13
IT1258913B (it) 1996-03-01
ITMI921135A0 (it) 1992-05-13
EP0569695A3 (es) 1994-02-09
EP0569695A2 (en) 1993-11-18
DE69306035D1 (de) 1997-01-02
ES2096127T3 (es) 1997-03-01

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