EP1338408A2 - Presse zur Bearbeitung von landwirtschaftlichen Produkten, insbesondere von Trauben und von Früchten im allgemeinen - Google Patents

Presse zur Bearbeitung von landwirtschaftlichen Produkten, insbesondere von Trauben und von Früchten im allgemeinen Download PDF

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Publication number
EP1338408A2
EP1338408A2 EP03003318A EP03003318A EP1338408A2 EP 1338408 A2 EP1338408 A2 EP 1338408A2 EP 03003318 A EP03003318 A EP 03003318A EP 03003318 A EP03003318 A EP 03003318A EP 1338408 A2 EP1338408 A2 EP 1338408A2
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EP
European Patent Office
Prior art keywords
membrane
tank
pressing
press according
press
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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.)
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Application number
EP03003318A
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English (en)
French (fr)
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EP1338408A3 (de
Inventor
Dario Bonazzoli
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Individual
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Individual
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Publication date
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Publication of EP1338408A2 publication Critical patent/EP1338408A2/de
Publication of EP1338408A3 publication Critical patent/EP1338408A3/de
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    • 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
    • B30B9/225—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 the diaphragm being tubular

Definitions

  • the present invention relates to a press for pressing agricultural products, particularly grapes and fruits in general.
  • tank presses for example of the pneumatic or water type, are known for pressing grapes.
  • a cylindrical press which has a horizontal axis and a tubular membrane and in which, after loading the container, the tubular membrane is pressurized without turning the container, because the rotation would damage the loose membrane.
  • the product to be pressed in fact has a considerable and uneven thickness, and therefore the times for draining and discharging the liquid are long and uneven.
  • An aim of this invention is to provide a press that is capable of eliminating the drawbacks of the cited known art.
  • An object of this invention is to provide a press that is capable of eliminating the drawbacks due to damage of the tubular membrane and of allowing its use also on tanks that have a large diameter and a considerable length, allowing rotation in all steps: loading, draining without pressure, actual pressing, breakup and discharge of the used product.
  • Another object of the invention is to provide a press that is capable of pressing both discontinuously and in a semicontinuous-intermittent manner.
  • the press generally designated by the reference numeral 1, comprises a cylindrical tank 2 made of perforated sheet metal, with a substantially horizontal axis, which is supported so that it can rotate at its ends by hubs 3 and 4, which are in turn supported by opposite supports 5 and 6.
  • the support 5 is anchored to a fixed supporting frame 7, which is pivoted to a base 8, while the support 6 is anchored to a jack 9, which is suitable to lift the end of the tank in order to tilt it so as to facilitate the transfer of the pressed material from the inlet chamber toward the subsequent chambers, as described in greater detail hereinafter.
  • the tank 2 has, in a per se known manner, at least one door for unloading the pressed material.
  • a coupling that can rotate in a per se known manner and is not shown in the drawings, feeds the pressing fluid at low and high pressure for inflating and respectively deflating a membrane 10 and diaphragms 11 made of fabric-reinforced rubber, each of which is associated with a pair of disks 12, which are arranged at right angles to the longitudinal axis of the tank 2 and are supported by tension members 14.
  • the tank 2 is actually constituted by a series of modules, designated by the reference numeral 15, which are constituted by an outer side wall that is provided with slotted holes 13 and with end flanges 16 for fixing to the adjacent modules.
  • the circular disks 12 are comprised within the side wall, and the elastic membranes 11 are coupled by means of a flange to the sides of the disks, thus forming a plurality of chambers 18.
  • the diameter of the disks 12 is smaller than the inside diameter of the tank, in order to allow the transfer of the product from one chamber to the other.
  • diaphragms 11 which, when retracted (in vacuum), allow the transfer of the product from one chamber to another and when pressurized instead seal the pressing chambers, which can accordingly be pressurized.
  • the diaphragms 11 are preferably made of fabric-reinforced rubber and, when pressurized by a fluid, close the annular passage between the circular disks 12 and the side wall of the tank.
  • These components can be all pressurized simultaneously or separately, forming separate and independent pressing chambers, in which pressing can be performed individually or simultaneously at different pressures in each chamber. If the diaphragms 11 remain open, pressing can be performed in all the chambers with a pressing program as if it were a single-chamber tank with discontinuous operation.
  • the diaphragms 11 preferably have an internal pressure that is several times higher (5-6 bar) than the pressure of the membrane (1.6 bar), because the diaphragms 11, in addition to having the function of separating and closing the chambers, are also adapted to contain the lateral thrusts caused by the difference in pressure between the membranes of one chamber and the other.
  • the pressure fluid is conveyed through a rotary coupling to the various membranes 10 through holes 20 formed in the tension members 14, which for this purpose are hollow, as shown in Figure 4.
  • the high-pressure fluid is conveyed by a rotary coupling and pipes, not shown in the figures, which are connected to a hole 21 that is provided in the disk 12 in order to feed each diaphragm 11.
  • the diaphragms 11 can also be associated with the outer side wall, in annular chambers, and in this case the pressure fluid would be supplied by a pipe located outside the tank.
  • the circular disks 12, which constitute the partitions that delimit two adjacent pressing chambers 18, have outer sides to which the membranes 10 are fixed by means of flanges 19.
  • the diaphragms 11, in the vacuum condition, are retracted, as shown in Figure 6, in order to allow to convey the product from one chamber to another, while in the pressing step they are pressurized, as shown more clearly in Figure 5, sealing the chamber and making it capable of performing pressing, and containing, in cooperation with the disks 12, the lateral thrusts applied by the pressing pressure.
  • the diaphragms can be retracted, in the vacuum step, also into a receptacle that is external to the tank and can act, during the pressure step, by inflating hermetically at and against the peripheral wall of two circular disks.
  • the fluid would be fed by means of a pipe arranged externally to the tank.
  • each diaphragm 11, retracted in vacuum is accommodated inside the two disks 12, expanding toward the outside of the tank, i.e., against the inner wall of the side wall, in the active step, thus providing a hermetic seal capable of withstanding the pressing pressures in the chamber involved.
  • air is fed to the diaphragms 11 from the inside of the tank, by feeding the hermetic chamber constituted by the pair of disks 12.
  • the pairs of annular disks 12 are assembled hermetically with modular tension members 14 in order to allow to assemble the disks and the membranes 10, one after the other, starting from one end of the tank 2 and advancing so as to lock each one of the modules.
  • Figure 1 schematically illustrates conveyance devices 20, which are preferably glued to the inner surface of the tank 2 and are suitable to convey the marc during the rotation of the tank.
  • FIGS 7 to 14 illustrate a single-chamber press, generally designated by the reference numeral 101, which includes a cylindrical tank 102 made of perforated sheet metal, with a horizontal axis that is supported so that it can rotate at its ends by the two hubs 103 and 104 by supports 105 and by a supporting frame 107.
  • the tank 102 has, in a per se know manner, at least one door 112 for loading and unloading the material.
  • the pressed juice is discharged through the holes of the perforated sheet metal 113 of the cylinder and is collected by an underlying tray, which is not shown in the figures.
  • the pressing fluid is fed in a per se known manner at low and high pressure in order to inflate and deflate the membrane 110 of the press.
  • the fluid is conveyed by a rotary coupling, which is per se known and is not shown in the figure, through the hole of the shaft 104 into the membrane 110, pressurizing it.
  • the elastic tubular membrane 110 is fixed, by means of flanges 119, to the ends 120 of the tank.
  • Supporting members 114 are provided inside the membrane 110 and coaxially thereto and are adapted to support, during the rotation of the tank, the membrane and the weight of the material.
  • the supporting members constituted by tubes or solid rods 114, can be of the load-bearing type and be monolithic with the hubs 103 and 104 and the flanges 119, as in the example shown in Figures 11 and 12.
  • the tubes 114 can be mutually rigidly coupled by welded metal plates, increasing the strength of the supporting frame.
  • this entails that the ends and the cylindrical central part of the tank can be disassembled and provided with flanges in order to allow the assembly and disassembly of the membrane. This solution is required for low-capacity tanks, where it is not possible to install the membrane from the inside of the tank.
  • the supporting members 114 of the membrane can be constituted by one or more tension members that can be extracted from the outside of the tank, inserted in the membrane 110 and locked with nuts 121 to the outside of the ends 120.
  • the tank is welded monolithically and is not bolted together as in the embodiment shown in Figures 11 and 12.
  • Draining occurs by gravity through the perforated sheet metal of the container 102.
  • the supporting members 114 allow to rotate the tank in order to facilitate a more thorough static draining without damaging the membrane, which is still loose.
  • the tank is rotated and the combined action of rotation and inflation of the membrane facilitates the distribution of the product in a uniform manner over the entire annular region between the membrane and the perforated draining plate.
  • the membrane in the loose state is supported by the supporting tension members 114, and as it pressurizes it acquires a considerable surface rigidity that allows it to make the material flow during rotation.
  • the membrane is retracted, even in vacuum, adhering perfectly to itself and to the supporting members, thus being able to rotate without being damaged.
  • the mixing and pressing cycles are alternated and repeated until the required depletion is achieved.
  • the press has a plurality of chambers, such as the one shown in Figures 1 to 6, the operation in a single chamber is identical to the preceding one for a single-chamber press, with the only difference that in this case there are different possibilities to develop the pressing to its best, by adapting the pressing cycle according to production requirements.
  • Discontinuous operation is possible by keeping the diaphragms open as if the various chambers constituted a single tank.
  • the pressing process is discontinuous and occurs while the chambers are open, as in a single-chamber tank.
  • This process is advantageous in discontinuous treatments, for example in order to press all of the content of a tank where what matters is the capacity rather than the hourly output of a continuous treatment.
  • Another type of possible operation is semi-continuous operation with cycles of partial pressing in each chamber and simultaneously in n chambers.
  • the invention achieves the intended aim and objects, a press having been provided in which the elastic tubular membrane allows uniform distribution of the product to be pressed over the entire peripheral surface of the draining tank, reducing the pressing times and the values of the pressures without damaging the pressing membrane in any cycle.
  • the press with elastic tubular membrane in the version with a plurality of modular chambers, in addition to achieving the same aim and objects as the single-chamber press, allows to cover various operating requirements by increasing both the capacity of the tanks, by increasing the number of modules of limited commercial length, and hourly production, by distributing the entire pressing cycle into partial cycles that are performed simultaneously in each chamber.
  • the membrane can be made to adhere perfectly in vacuum conditions to the supporting frame, rigidly coupling it to the supporting structure.
  • the container of the press can rotate in all of the operating steps, i.e., loading, pressing, discharge, without suffering any damage regardless of the diameter of the membrane and of its length.
  • the membrane acquires, due to internal pressure and to an adequate thickness, a considerable rigidity, which allows the product to move into the empty spaces as the membrane inflates and the container rotates, distributing the product in a practically uniform and annular fashion over the entire cylindrical draining surface of the tank.
  • Another advantage of the present invention is that it uses the single-chamber tank with elastic tubular membrane for small capacities and develops the same principle for medium and large capacities, forming a tank that has a reduced diameter and extending the capacity lengthwise by means of independent chambers, which can press both discontinuously, i.e., as a single tank with a complete pressing cycle, and semicontinuously-intermittently, wherein a partial pressing cycle is performed in each chamber simultaneously with other partial cycles in other chambers.
  • the process becomes more continuous as the number of chambers increases.
  • Hourly production is of course proportional to the number of chambers.
  • the materials used, as well as the dimensions, may of course be any according to requirements and to the state of the art.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
EP03003318A 2002-02-14 2003-02-13 Presse zur Bearbeitung von landwirtschaftlichen Produkten, insbesondere von Trauben und von Früchten im allgemeinen Withdrawn EP1338408A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20020280 2002-02-14
IT2002MI000280A ITMI20020280A1 (it) 2002-02-14 2002-02-14 Pressa per la spremitura di prodotti agricoli in particolare uva frutta e simili

Publications (2)

Publication Number Publication Date
EP1338408A2 true EP1338408A2 (de) 2003-08-27
EP1338408A3 EP1338408A3 (de) 2004-04-07

Family

ID=11449219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003318A Withdrawn EP1338408A3 (de) 2002-02-14 2003-02-13 Presse zur Bearbeitung von landwirtschaftlichen Produkten, insbesondere von Trauben und von Früchten im allgemeinen

Country Status (2)

Country Link
EP (1) EP1338408A3 (de)
IT (1) ITMI20020280A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVE20130033A1 (it) * 2013-07-02 2015-01-03 Della Toffola Spa Macchina perfezionata per la pressatura di frutta o prodotti simili e metodo per la pulizia dei suoi canali di drenaggio.
ITPN20130062A1 (it) * 2013-10-16 2015-04-17 Tmci Padovan S P A Pressa per prodotti ortofrutticoli e relativo metodo di pressatura
ITPN20130065A1 (it) * 2013-11-11 2015-05-12 Tmci Padovan S P A Filtropressa per trattamento fanghi e relativo metodo di pressatura
WO2020058866A1 (en) * 2018-09-21 2020-03-26 Della Toffola S.P.A. Plant and method for the extraction of juice from vegetable raw material
US20220055246A1 (en) * 2015-05-15 2022-02-24 Usnr, Llc Modular press

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166925A5 (en) * 1971-10-26 1973-08-17 Up Right Inc Continuous wine press - employs peristaltic action to avoid expressing bitter juices from pips
DE8135615U1 (de) * 1981-12-08 1982-07-01 Günter Fischer GmbH, 6706 Wachenheim Presse zum auspressen fluessigkeitshaltiger stoffe
FR2529135A1 (fr) * 1982-06-29 1983-12-30 Willmes Josef Gmbh Pressoir pour pressurer des produits agricoles
DE3440558A1 (de) * 1984-11-07 1986-05-07 Karl-Heinz 7801 Ballrechten-Dottingen Quetsch Presse zum auspressen von fluessigkeitshaltigen stoffen
IT1228286B (it) * 1989-01-05 1991-06-07 Bonazzoli Dario Pressa a serbatoio per la spremitura di uva, frutta o simili.
EP0569695A2 (de) * 1992-05-13 1993-11-18 S.I.P.R.E.M. S.p.A. Vorrichtung zum Trennen von flüssigen und festen Substanzen, insbesondere zur Gewinnung von Saft aus Früchten oder dergleichen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166925A5 (en) * 1971-10-26 1973-08-17 Up Right Inc Continuous wine press - employs peristaltic action to avoid expressing bitter juices from pips
DE8135615U1 (de) * 1981-12-08 1982-07-01 Günter Fischer GmbH, 6706 Wachenheim Presse zum auspressen fluessigkeitshaltiger stoffe
FR2529135A1 (fr) * 1982-06-29 1983-12-30 Willmes Josef Gmbh Pressoir pour pressurer des produits agricoles
DE3440558A1 (de) * 1984-11-07 1986-05-07 Karl-Heinz 7801 Ballrechten-Dottingen Quetsch Presse zum auspressen von fluessigkeitshaltigen stoffen
IT1228286B (it) * 1989-01-05 1991-06-07 Bonazzoli Dario Pressa a serbatoio per la spremitura di uva, frutta o simili.
EP0569695A2 (de) * 1992-05-13 1993-11-18 S.I.P.R.E.M. S.p.A. Vorrichtung zum Trennen von flüssigen und festen Substanzen, insbesondere zur Gewinnung von Saft aus Früchten oder dergleichen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVE20130033A1 (it) * 2013-07-02 2015-01-03 Della Toffola Spa Macchina perfezionata per la pressatura di frutta o prodotti simili e metodo per la pulizia dei suoi canali di drenaggio.
EP2821214A1 (de) 2013-07-02 2015-01-07 Della Toffola S.p.A. Maschine zum Auspressen von Obst oder ähnlichen Produkten und Verfahren zur Reinigung ihrer Entwässerungsrinnen
ITPN20130062A1 (it) * 2013-10-16 2015-04-17 Tmci Padovan S P A Pressa per prodotti ortofrutticoli e relativo metodo di pressatura
EP2862705A1 (de) * 2013-10-16 2015-04-22 TMCI Padovan S.p.A. Presse für Früchte und Gemüse und Verfahren zum Pressen
ITPN20130065A1 (it) * 2013-11-11 2015-05-12 Tmci Padovan S P A Filtropressa per trattamento fanghi e relativo metodo di pressatura
WO2015068026A1 (en) 2013-11-11 2015-05-14 Tmci Padovan S.P.A. Filter press for treating sludge and the corresponding method of pressing
US20220055246A1 (en) * 2015-05-15 2022-02-24 Usnr, Llc Modular press
US11969912B2 (en) * 2015-05-15 2024-04-30 Usnr, Llc Modular press
WO2020058866A1 (en) * 2018-09-21 2020-03-26 Della Toffola S.P.A. Plant and method for the extraction of juice from vegetable raw material

Also Published As

Publication number Publication date
EP1338408A3 (de) 2004-04-07
ITMI20020280A1 (it) 2003-08-14
ITMI20020280A0 (it) 2002-02-14

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