EP0685326B1 - Drainage element for presses extracting liquid from solid substances - Google Patents

Drainage element for presses extracting liquid from solid substances Download PDF

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Publication number
EP0685326B1
EP0685326B1 EP95107456A EP95107456A EP0685326B1 EP 0685326 B1 EP0685326 B1 EP 0685326B1 EP 95107456 A EP95107456 A EP 95107456A EP 95107456 A EP95107456 A EP 95107456A EP 0685326 B1 EP0685326 B1 EP 0685326B1
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EP
European Patent Office
Prior art keywords
cuff
ring
drainage
drainage element
core
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
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EP95107456A
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German (de)
French (fr)
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EP0685326A1 (en
Inventor
Eduard Hartmann
Ruedi Jossi
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Bucher Guyer AG
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Bucher Guyer AG
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Publication of EP0685326A1 publication Critical patent/EP0685326A1/en
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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
    • B30B9/26—Permeable casings or strainers
    • B30B9/262—Permeable casings or strainers means disposed in the casing facilitating the squeezing-out of liquid

Definitions

  • the invention relates to a drainage element for presses Excretion of liquids from solid substances, especially for fruit presses, comprising one rod-shaped, flexible drainage core with flow paths for Deriving the squeezed liquid from the press room and a surrounding the drainage core, liquid-permeable filter cover, at least one End of the drainage element on a juice collecting plate, Pressure plate or can be attached to the press jacket of the press, as well as the drainage core in the fastening area and on a free section adjoining it elastic cuff.
  • Fig. 1 shows a longitudinal section through the known Attachment of a drainage element in a fruit press.
  • a press space 2 delimited by a pressure plate 1 a known fruit press, not shown, are one A large number of drainage elements 3 are arranged.
  • a drainage element 3 consists essentially of a elastic drainage core 4, over the outside Grooves 5, as section A-A shows, the liquid during the pressing process is led out of the pressing chamber 2, and a stocking-shaped filter 6 stretched over it Solid-liquid separation.
  • Each at the ends of the Drainage element 3 are the drainage core 4 and the filter 6 fixed in a core holder 7.
  • the filter 6 will passed over an elastic cuff 8 and with an O-ring 9 fixed.
  • a disc 10 serves to support the cuff 8 against a cross pin 11 which laterally in bores of Drainage core 4 and the core holder 7 is pushed, and the axial and radial fixation of the two components 4 and 7 guaranteed to each other.
  • the core holder 7 is using a spacer 12 and a circlip 13 connected to the pressure plate 1.
  • a cam 14 of the locking ring 13 the through a slot 15 in the spacer 12 into a groove 16 of the core holder 7 engages in connection with one behind the pressure plate 1 lying collar 17 Spacer 12, the security against axial displacement forth.
  • Patent application EP-A-0 663 283 the filing date before The filing date of the present patent application is and the has only been published after that day.
  • EP-A-0 663 283 has the disadvantages mentioned above already avoided by at least one support element for the Cuff, which is connected to the same in such a way that their deformability in one in the fastening area lying part area strong compared to the rest of the part is restricted.
  • the support element is a sleeve high bending stiffness.
  • Document EP-A-0 663 283 is not for the question of inventive step significant.
  • the invention is based on the object Disadvantages of a device of the type mentioned to avoid.
  • this object is achieved by at least one support element for the cuff, which with the same so that their deformability in a sub-area in the fastening area is severely restricted compared to the rest of the part, the support element as a ring with high bending rigidity is trained and the ring is connected to the cuff so that the The outside diameter of the ring and cuff coincide.
  • the support element as a ring with high bending rigidity is trained and the ring is connected to the cuff so that the The outside diameter of the ring and cuff coincide.
  • FIG. 2 shows a cuff 8 'similar to that in FIG. 1 shown and explained type.
  • a metal ring 26 is inserted as a support element, the Connection between metal ring and cuff detachable or firm can be.
  • a ring 26 which is flush with the outer diameter of the cuff 8 '.
  • the ring 26 according to FIG. 2 has a circular radial cross section.
  • Fig. 3 shows a variant of the cuff 8 ', in which the supporting ring 28 on its outer circumference as part of a Shoulder is integrated into the cuff. So that is at the same time wear on the shoulder Core holder 7 acc. Fig. 1 reduced.
  • the invention relates to a drainage element for presses Excretion of liquids from solid substances, especially for fruit presses, comprising one rod-shaped, flexible drainage core with flow paths for Deriving the squeezed liquid from the press room and a surrounding the drainage core, liquid-permeable filter cover, at least one End of the drainage element on a juice collecting plate, Pressure plate or can be attached to the press jacket of the press, as well as the drainage core in the fastening area and on a free section adjoining it elastic cuff.
  • Fig. 1 shows a longitudinal section through the known Attachment of a drainage element in a fruit press.
  • a press space 2 delimited by a pressure plate 1 a known fruit press, not shown, are one A large number of drainage elements 3 are arranged.
  • a drainage element 3 consists essentially of a elastic drainage core 4, over the outside Grooves 5, as section A-A shows, the liquid during the pressing process is led out of the pressing chamber 2, and a stocking-shaped filter 6 stretched over it Solid-liquid separation.
  • Each at the ends of the Drainage element 3 are the drainage core 4 and the filter 6 fixed in a core holder 7.
  • the filter 6 will passed over an elastic cuff 8 and with an O-ring 9 fixed.
  • a disc 10 serves to support the cuff 8 against a cross pin 11 which laterally in bores of Drainage core 4 and the core holder 7 is pushed, and the axial and radial fixation of the two components 4 and 7 guaranteed to each other.
  • the core holder 7 is using a spacer 12 and a circlip 13 connected to the pressure plate 1.
  • a cam 14 of the locking ring 13 the through a slot 15 in the spacer 12 into a groove 16 of the core holder 7 engages in connection with one behind the pressure plate 1 lying collar 17 Spacer 12, the security against axial displacement forth.
  • the invention is based on the object Disadvantages of a device of the type mentioned to avoid.
  • this object is achieved by at least one support element for the cuff, which with the same so that their deformability in a sub-area in the fastening area is severely restricted compared to the rest of the part.
  • FIG. 2 shows a cuff 8 'similar to that in FIG. 1 shown and explained type.
  • a metal ring 23 inserted as a support element, the Connection between metal ring and cuff detachable or firm can be.
  • the metal ring 23 closes in Fastening area of the drainage core 4 acc. Fig. 1 with the inner diameter of the cuff 8 'and is only sufficient so far that unsupported zones 24 of the cuff 8 ' surrender.
  • ring 26 In the embodiment of the cuff 8 'according to FIG. 3 is supported by a ring 26, which is flush with the outer diameter of the cuff 8 '. Like ring 23 according to FIG. 2, ring 26 also has 3 has a circular radial cross section.
  • Fig. 4 shows a variant of the cuff 8 ', in which the supporting ring 28 on its outer circumference as part of a Shoulder is integrated into the cuff. So that is at the same time wear on the shoulder Core holder 7 acc. Fig. 1 reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Filtration Of Liquid (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The drainage element has at least one support element is provided for the sleeve (8) which is connected to it so that its ductility is strictly confined to an area lying in the attachment zone in relation to the remaining portion. The support element is formed as a ring with high flexural strength and is connected to the sleeve so that the internal or external diameter of the ring and sleeve coincide. The ring has a circular radial cross=section. <IMAGE>

Description

Beschreibung für folgende Vertragsstaaten : AT, CH, DE, ES, FR, IT, LIDescription for the following contracting states: AT, CH, DE, ES, FR, IT, LI

Die Erfindung betrifft ein Drainageelement für Pressen zum Ausscheiden von Flüssigkeiten aus festen Stoffen, insbesondere für Früchtepressen, umfassend einen stabförmigen, flexiblen Drainagekern mit Fliesswegen zum Ableiten der ausgepressten Flüssigkeit aus dem Pressraum und eine den Drainagekern umgebende, flüssigkeitsdurchlässige Filterhülle, wobei mindestens ein Ende des Drainageelementes an einer Saftsammelplatte, Druckplatte oder am Pressmantel der Presse befestigbar ist, sowie eine den Drainagekern im Befestigungsbereich und auf einem daran anschliessenden freien Abschnitt umgebende gummielastische Stulpe.The invention relates to a drainage element for presses Excretion of liquids from solid substances, especially for fruit presses, comprising one rod-shaped, flexible drainage core with flow paths for Deriving the squeezed liquid from the press room and a surrounding the drainage core, liquid-permeable filter cover, at least one End of the drainage element on a juice collecting plate, Pressure plate or can be attached to the press jacket of the press, as well as the drainage core in the fastening area and on a free section adjoining it elastic cuff.

Fig. 1 zeigt einen Längsschnitt durch die bekannte Befestigung eines Drainageelementes in einer Früchtepresse. In einem durch je eine Druckplatte 1 begrenzten Pressraum 2 einer nicht dargestellten bekannten Früchtepresse sind eine Vielzahl Drainageelemente 3 angeordnet.Fig. 1 shows a longitudinal section through the known Attachment of a drainage element in a fruit press. In a press space 2 delimited by a pressure plate 1 a known fruit press, not shown, are one A large number of drainage elements 3 are arranged.

Ein Drainageelement 3 besteht im wesentlichen aus einem elastischen Drainagekern 4, über dessen aussenliegende Nuten 5, wie der Schnitt A-A zeigt, die Flüssigkeit während des Pressvorganges aus dem Pressraum 2 herausgeleitet wird, und einem darüber gespannten strumpfförmigen Filter 6 zur Fest-Flüssig-Trennung. Jeweils an den Enden des Drainageelementes 3 sind der Drainagekern 4 und der Filter 6 in einem Kernhalter 7 befestigt. Der Filter 6 wird dabei über eine elastische Stulpe 8 geführt und mit einem O-Ring 9 fixiert. Eine Scheibe 10 dient zur Abstützung der Stulpe 8 gegen einen Querstift 11, der seitlich in Bohrungen des Drainagekernes 4 und des Kernhalters 7 geschoben wird, und so die axiale und radiale Fixierung der beiden Bauteile 4 und 7 zueinander gewährleistet.A drainage element 3 consists essentially of a elastic drainage core 4, over the outside Grooves 5, as section A-A shows, the liquid during the pressing process is led out of the pressing chamber 2, and a stocking-shaped filter 6 stretched over it Solid-liquid separation. Each at the ends of the Drainage element 3 are the drainage core 4 and the filter 6 fixed in a core holder 7. The filter 6 will passed over an elastic cuff 8 and with an O-ring 9 fixed. A disc 10 serves to support the cuff 8 against a cross pin 11 which laterally in bores of Drainage core 4 and the core holder 7 is pushed, and the axial and radial fixation of the two components 4 and 7 guaranteed to each other.

Der Kernhalter 7 wird mithilfe einer Distanzbuchse 12 und eines Sicherungsringes 13 mit der Druckplatte 1 verbunden. Dabei stellt ein Nocken 14 des Sicherungsringes 13, der durch einen Schlitz 15 in der Distanzbuchse 12 in eine Nut 16 des Kernhalters 7 hineingreift, in Verbindung mit einem hinter der Druckplatte 1 liegenden Bund 17 der Distanzbuchse 12 die Sicherung gegen axiales Verschieben her.The core holder 7 is using a spacer 12 and a circlip 13 connected to the pressure plate 1. Here, a cam 14 of the locking ring 13, the through a slot 15 in the spacer 12 into a groove 16 of the core holder 7 engages in connection with one behind the pressure plate 1 lying collar 17 Spacer 12, the security against axial displacement forth.

Wie Fig. 1 erkennen lässt, ist der Filter 6 durch Einklemmen zwischen Kernhalter 7, Stulpe 8 und O-Ring 9 in der Distanzbuchse 12 gehalten. Mindestens die Stulpe 8 ist aus einem elastisch verformbaren Material, vorzugsweise aus einem Elastomer gefertigt. Diese Art der Konstruktion hat folgende Nachteile:

  • a) Die Klemmkräfte haben eine Verringerung des Innendurchmessers der elastischen Stulpe 8 zur Folge, wobei die Klemmkräfte teilweise auch auf den Drainagekern 4 übertragen werden. Da der Drainagekern 4 ebenfalls aus einem elastischen Material besteht, wird er dieser Krafteinwirkung entsprechend bleibend verformt. Der Kerndurchmesser wird kleiner, und der Saftabflussquerschnitt in den Nuten 5 reduziert sich, was den Saftabfluss behindert.
  • b) Beim Ablauf des Pressvorganges wirken unter anderem auch Zugkräfte 20 längs des Filters 6. Da die Stulpe 8 aus einem elastischen Material besteht, wird sie beim Auftreten solcher Zugkräfte 20 oberhalb eines bestimmten Betrages mit dem Filter 6 durch einen Ringspalt gezogen, welcher zwischen dem Kernhalter 7 und dem Drainagekern 4 gebildet ist. Dies hat Betriebsstörungen zur Folge.
  • c) Eine weitere Störungsursache ist dadurch bedingt, dass infolge der Zugkräfte 20 auf dem Filter 6 am Aussenumfang der Stulpe 8 wegen der Reibung zwischen Filter und Stulpe Kräfte in Längsrichtung angreifen. Die Reibung zwischen Stulpe 8 und Drainagekern 4 am Innenumfang der Stulpe hält aber die Stulpe fest, sodass die Längskräfte am Aussenumfang zu einer Längsscherung und damit zu einer Reduktion des Aussendurchmessers der Stulpe 8 führen. Dies wiederum führt dazu, dass die Klemmkraft 22 zwischen Kernhalter 7 und Stulpe 8 zur Fixierung des Filters 6 so weit nachlässt, dass der Filter 6 zwischen den klemmenden Teilen herausgezogen wird. Auch dies hat eine Betriebsstörung zur Folge.
    • As can be seen in FIG. 1, the filter 6 is held in the spacer 12 by being clamped between the core holder 7, cuff 8 and O-ring 9. At least the cuff 8 is made of an elastically deformable material, preferably an elastomer. This type of construction has the following disadvantages:
  • a) The clamping forces result in a reduction in the inner diameter of the elastic cuff 8, the clamping forces being partially also transmitted to the drainage core 4. Since the drainage core 4 also consists of an elastic material, it is permanently deformed in accordance with this force. The core diameter becomes smaller and the juice drainage cross section in the grooves 5 is reduced, which hinders the juice drainage.
  • b) When the pressing process takes place, tensile forces 20 also act along the filter 6. Since the cuff 8 consists of an elastic material, when such tensile forces 20 occur above a certain amount, it is pulled with the filter 6 through an annular gap, which between the Core holder 7 and the drain core 4 is formed. This leads to malfunctions.
  • c) Another cause of the fault is due to the fact that, due to the tensile forces 20 on the filter 6, forces act in the longitudinal direction on the outer circumference of the cuff 8 due to the friction between the filter and the cuff. The friction between the cuff 8 and the drainage core 4 on the inner circumference of the cuff, however, holds the cuff in place, so that the longitudinal forces on the outer circumference lead to longitudinal shearing and thus to a reduction in the outer diameter of the cuff 8. This in turn leads to the fact that the clamping force 22 between the core holder 7 and cuff 8 for fixing the filter 6 decreases so much that the filter 6 is pulled out between the clamping parts. This also results in a malfunction.

    • Die beschriebenen Nachteile sind also durch die gummielastischen Eigenschaften der genannten Teile bedingt. Auf elastisch verformbare Teile kann aber nicht verzichtet werden, da sonst die Lebensdauer der Filter 6 verkürzt wird.The disadvantages described are therefore due to the conditional rubber-elastic properties of the parts mentioned. However, it is not possible to do without elastically deformable parts be otherwise the life of the filter 6 is shortened becomes.

    Als Stand der Technik gilt der Inhalt der europäischen Patentanmeldung EP-A-0 663 283, deren Anmeldetag vor dem Anmeldetag der vorliegenden Patentanmeldung liegt und die erst nach diesem Tag veröffentlicht worden ist. Gemäss dieser EP-A-0 663 283 wurden die oben genannten Nachteile schon vermieden durch mindestens ein Stützelement für die Stulpe, welches mit derselben so in Verbindung steht, dass ihre Verformbarkeit in einem im Befestigungsbereich liegenden Teilbereich gegenüber dem restlichen Teil stark eingeschränkt ist. Dabei ist das Stützelement als Hülse mit hoher Biegesteifigkeit ausgebildet. Das Dokument EP-A-0 663 283 ist für die Frage der erfinderischen Tätigkeit nicht von Bedeutung.The content of the European state of the art applies Patent application EP-A-0 663 283, the filing date before The filing date of the present patent application is and the has only been published after that day. According to this EP-A-0 663 283 has the disadvantages mentioned above already avoided by at least one support element for the Cuff, which is connected to the same in such a way that their deformability in one in the fastening area lying part area strong compared to the rest of the part is restricted. The support element is a sleeve high bending stiffness. Document EP-A-0 663 283 is not for the question of inventive step significant.

    Der Erfindung liegt die Aufgabe zugrunde, die genannten Nachteile durch eine Vorrichtung der eingangs erwähnten Art zu vermeiden.The invention is based on the object Disadvantages of a device of the type mentioned to avoid.

    Gemäss der Erfindung wird diese Aufgabe gelöst durch mindestens ein Stützelement für die Stulpe, welches mit derselben so in Verbindung steht, dass ihre Verformbarkeit in einem im Befestigungsbereich liegenden Teilbereich gegenüber dem restlichen Teil stark eingeschränkt ist, wobei das Stützelement als Ring mit hoher Biegesteifigkeit ausgebildet ist und der Ring mit der Stulpe so verbunden ist, dass die Aussendurchmesser von Ring und Stulpe zusammenfallen. Weitere bevorzugte Ausführungsformen sind in den Patentansprüchen gekennzeichnet.According to the invention, this object is achieved by at least one support element for the cuff, which with the same so that their deformability in a sub-area in the fastening area is severely restricted compared to the rest of the part, the support element as a ring with high bending rigidity is trained and the ring is connected to the cuff so that the The outside diameter of the ring and cuff coincide. Other preferred embodiments are characterized in the claims.

    Die Erfindung ist in der folgenden Beschreibung und den Zeichnungen, die Ausführungsbeispiele darstellen, näher erläutert.The invention is in the following description and Drawings that illustrate embodiments, closer explained.

    Es zeigen:

  • Fig. 1 einen Schnitt durch eine bekannte Befestigung eines Drainageelementes an der Druckplatte einer Früchtepresse,
  • Fig. 2 einen Schnitt durch eine gummielastische Stulpe mit einem aussenliegenden Ring als Stützelement zur Befestigung eines erfindungsgemässen Drainageelementes an der Druckplatte einer Früchtepresse, und
  • Fig. 3 einen Schnitt durch eine gummielastische Stulpe, welche an ihrem Aussenumfang eine Schulter aufweist, wobei ein Ring als Teil der Schulter in die Stulpe integriert ist.
    • Show it:
  • 1 shows a section through a known fastening of a drainage element to the pressure plate of a fruit press,
  • 2 shows a section through a rubber-elastic cuff with an outer ring as a support element for fastening a drainage element according to the invention to the pressure plate of a fruit press, and
  • Fig. 3 shows a section through a rubber-elastic cuff, which has a shoulder on its outer circumference, wherein a ring is integrated into the cuff as part of the shoulder.

    • Fig. 2 zeigt eine Stulpe 8' ähnlich der schon in Fig. 1 gezeigten und erklärten Art. In die Stulpe 8' ist jedoch ein Metallring 26 als Stützelement eingelegt, wobei die Verbindung zwischen Metallring und Stulpe lösbar oder fest sein kann.FIG. 2 shows a cuff 8 'similar to that in FIG. 1 shown and explained type. In the cuff 8 ', however a metal ring 26 is inserted as a support element, the Connection between metal ring and cuff detachable or firm can be.

    Durch den Metallring 26 sind die oben in Verbindung mit Fig. 1 genannten Nachteile des bekannten Drainageelementes behoben, nämlich die Verformungen an den Nuten 5 für die Drainage und das Herausziehen der gummielastischen Stulpe 8 und des Filters 6 zwischen dem Kernhalter 7 und dem Drainagekern 4. Through the metal ring 26 are the above in connection with Fig. 1 mentioned disadvantages of the known drainage element fixed, namely the deformations on the grooves 5 for the Drainage and pulling out the rubber-elastic cuff 8 and the filter 6 between the core holder 7 and the Drainage core 4.

    Bei dem Ausführungsbeispiel der Stulpe 8' gemäss Fig. 2 wird deren Abstützung durch einen Ring 26 erreicht, welcher mit dem Aussendurchmesser der Stulpe 8' bündig abschliesst. Der Ring 26 gemäss Fig. 2 weist einen kreisförmigen radialen Querschnitt auf.In the embodiment of the cuff 8 'according to FIG. 2 is supported by a ring 26, which is flush with the outer diameter of the cuff 8 '. The ring 26 according to FIG. 2 has a circular radial cross section.

    Fig. 3 zeigt eine Variante der Stulpe 8', bei der der abstützende Ring 28 an deren Aussenumfang als Teil einer Schulter in die Stulpe integriert ist. Damit ist gleichzeitig ein Verschleiss bei der Anlage der Schulter am Kernhalter 7 gem. Fig. 1 reduziert. Fig. 3 shows a variant of the cuff 8 ', in which the supporting ring 28 on its outer circumference as part of a Shoulder is integrated into the cuff. So that is at the same time wear on the shoulder Core holder 7 acc. Fig. 1 reduced.

    Beschreibung für folgenden Vertragsstaat : GBDescription for the following contracting state: GB

    Die Erfindung betrifft ein Drainageelement für Pressen zum Ausscheiden von Flüssigkeiten aus festen Stoffen, insbesondere für Früchtepressen, umfassend einen stabförmigen, flexiblen Drainagekern mit Fliesswegen zum Ableiten der ausgepressten Flüssigkeit aus dem Pressraum und eine den Drainagekern umgebende, flüssigkeitsdurchlässige Filterhülle, wobei mindestens ein Ende des Drainageelementes an einer Saftsammelplatte, Druckplatte oder am Pressmantel der Presse befestigbar ist, sowie eine den Drainagekern im Befestigungsbereich und auf einem daran anschliessenden freien Abschnitt umgebende gummielastische Stulpe.The invention relates to a drainage element for presses Excretion of liquids from solid substances, especially for fruit presses, comprising one rod-shaped, flexible drainage core with flow paths for Deriving the squeezed liquid from the press room and a surrounding the drainage core, liquid-permeable filter cover, at least one End of the drainage element on a juice collecting plate, Pressure plate or can be attached to the press jacket of the press, as well as the drainage core in the fastening area and on a free section adjoining it elastic cuff.

    Fig. 1 zeigt einen Längsschnitt durch die bekannte Befestigung eines Drainageelementes in einer Früchtepresse. In einem durch je eine Druckplatte 1 begrenzten Pressraum 2 einer nicht dargestellten bekannten Früchtepresse sind eine Vielzahl Drainageelemente 3 angeordnet.Fig. 1 shows a longitudinal section through the known Attachment of a drainage element in a fruit press. In a press space 2 delimited by a pressure plate 1 a known fruit press, not shown, are one A large number of drainage elements 3 are arranged.

    Ein Drainageelement 3 besteht im wesentlichen aus einem elastischen Drainagekern 4, über dessen aussenliegende Nuten 5, wie der Schnitt A-A zeigt, die Flüssigkeit während des Pressvorganges aus dem Pressraum 2 herausgeleitet wird, und einem darüber gespannten strumpfförmigen Filter 6 zur Fest-Flüssig-Trennung. Jeweils an den Enden des Drainageelementes 3 sind der Drainagekern 4 und der Filter 6 in einem Kernhalter 7 befestigt. Der Filter 6 wird dabei über eine elastische Stulpe 8 geführt und mit einem O-Ring 9 fixiert. Eine Scheibe 10 dient zur Abstützung der Stulpe 8 gegen einen Querstift 11, der seitlich in Bohrungen des Drainagekernes 4 und des Kernhalters 7 geschoben wird, und so die axiale und radiale Fixierung der beiden Bauteile 4 und 7 zueinander gewährleistet.A drainage element 3 consists essentially of a elastic drainage core 4, over the outside Grooves 5, as section A-A shows, the liquid during the pressing process is led out of the pressing chamber 2, and a stocking-shaped filter 6 stretched over it Solid-liquid separation. Each at the ends of the Drainage element 3 are the drainage core 4 and the filter 6 fixed in a core holder 7. The filter 6 will passed over an elastic cuff 8 and with an O-ring 9 fixed. A disc 10 serves to support the cuff 8 against a cross pin 11 which laterally in bores of Drainage core 4 and the core holder 7 is pushed, and the axial and radial fixation of the two components 4 and 7 guaranteed to each other.

    Der Kernhalter 7 wird mithilfe einer Distanzbuchse 12 und eines Sicherungsringes 13 mit der Druckplatte 1 verbunden. Dabei stellt ein Nocken 14 des Sicherungsringes 13, der durch einen Schlitz 15 in der Distanzbuchse 12 in eine Nut 16 des Kernhalters 7 hineingreift, in Verbindung mit einem hinter der Druckplatte 1 liegenden Bund 17 der Distanzbuchse 12 die Sicherung gegen axiales Verschieben her.The core holder 7 is using a spacer 12 and a circlip 13 connected to the pressure plate 1. Here, a cam 14 of the locking ring 13, the through a slot 15 in the spacer 12 into a groove 16 of the core holder 7 engages in connection with one behind the pressure plate 1 lying collar 17 Spacer 12, the security against axial displacement forth.

    Wie Fig. 1 erkennen lässt, ist der Filter 6 durch Einklemmen zwischen Kernhalter 7, Stulpe 8 und O-Ring 9 in der Distanzbuchse 12 gehalten. Mindestens die Stulpe 8 ist aus einem elastisch verformbaren Material, vorzugsweise aus einem Elastomer gefertigt. Diese Art der Konstruktion hat folgende Nachteile:

  • a) Die Klemmkräfte haben eine Verringerung des Innendurchmessers der elastischen Stulpe 8 zur Folge, wobei die Klemmkräfte teilweise auch auf den Drainagekern 4 übertragen werden. Da der Drainagekern 4 ebenfalls aus einem elastischen Material besteht, wird er dieser Krafteinwirkung entsprechend bleibend verformt. Der Kerndurchmesser wird kleiner, und der Saftabflussquerschnitt in den Nuten 5 reduziert sich, was den Saftabfluss behindert.
  • b) Beim Ablauf des Pressvorganges wirken unter anderem auch Zugkräfte 20 längs des Filters 6. Da die Stulpe 8 aus einem elastischen Material besteht, wird sie beim Auftreten solcher Zugkräfte 20 oberhalb eines bestimmten Betrages mit dem Filter 6 durch einen Ringspalt gezogen, welcher zwischen dem Kernhalter 7 und dem Drainagekern 4 gebildet ist. Dies hat Betriebsstörungen zur Folge.
  • c) Eine weitere Störungsursache ist dadurch bedingt, dass infolge der Zugkräfte 20 auf dem Filter 6 am Aussenumfang der Stulpe 8 wegen der Reibung zwischen Filter und Stulpe Kräfte in Längsrichtung angreifen. Die Reibung zwischen Stulpe 8 und Drainagekern 4 am Innenumfang der Stulpe hält aber die Stulpe fest, sodass die Längskräfte am Aussenumfang zu einer Längsscherung und damit zu einer Reduktion des Aussendurchmessers der Stulpe 8 führen. Dies wiederum führt dazu, dass die Klemmkraft 22 zwischen Kernhalter 7 und Stulpe 8 zur Fixierung des Filters 6 so weit nachlässt, dass der Filter 6 zwischen den klemmenden Teilen herausgezogen wird. Auch dies hat eine Betriebsstörung zur Folge.
    • As can be seen in FIG. 1, the filter 6 is held in the spacer 12 by being clamped between the core holder 7, cuff 8 and O-ring 9. At least the cuff 8 is made of an elastically deformable material, preferably an elastomer. This type of construction has the following disadvantages:
  • a) The clamping forces result in a reduction in the inner diameter of the elastic cuff 8, the clamping forces being partially also transmitted to the drainage core 4. Since the drainage core 4 also consists of an elastic material, it is permanently deformed in accordance with this force. The core diameter becomes smaller and the juice drainage cross section in the grooves 5 is reduced, which hinders the juice drainage.
  • b) When the pressing process takes place, tensile forces 20 also act along the filter 6. Since the cuff 8 consists of an elastic material, when such tensile forces 20 occur above a certain amount, it is pulled with the filter 6 through an annular gap, which between the Core holder 7 and the drain core 4 is formed. This leads to malfunctions.
  • c) Another cause of the fault is due to the fact that, due to the tensile forces 20 on the filter 6, forces act in the longitudinal direction on the outer circumference of the cuff 8 due to the friction between the filter and the cuff. The friction between the cuff 8 and the drainage core 4 on the inner circumference of the cuff, however, holds the cuff in place, so that the longitudinal forces on the outer circumference lead to longitudinal shearing and thus to a reduction in the outer diameter of the cuff 8. This in turn leads to the fact that the clamping force 22 between core holder 7 and cuff 8 for fixing the filter 6 decreases so much that the filter 6 is pulled out between the clamping parts. This also results in a malfunction.

    • Die beschriebenen Nachteile sind also durch die gummielastischen Eigenschaften der genannten Teile bedingt. Auf elastisch verformbare Teile kann aber nicht verzichtet werden, da sonst die Lebensdauer der Filter 6 verkürzt wird.The disadvantages described are therefore due to the conditional rubber-elastic properties of the parts mentioned. However, it is not possible to do without elastically deformable parts be otherwise the life of the filter 6 is shortened becomes.

    Der Erfindung liegt die Aufgabe zugrunde, die genannten Nachteile durch eine Vorrichtung der eingangs erwähnten Art zu vermeiden.The invention is based on the object Disadvantages of a device of the type mentioned to avoid.

    Gemäss der Erfindung wird diese Aufgabe gelöst durch mindestens ein Stützelement für die Stulpe, welches mit derselben so in Verbindung steht, dass ihre Verformbarkeit in einem im Befestigungsbereich liegenden Teilbereich gegenüber dem restlichen Teil stark eingeschränkt ist.According to the invention, this object is achieved by at least one support element for the cuff, which with the same so that their deformability in a sub-area in the fastening area is severely restricted compared to the rest of the part.

    Es erweist sich dabei als besonders vorteilhaft, wenn das Stützelement als Ring mit hoher Biegesteifigkeit ausgebildet ist. Weitere bevorzugte Ausführungsformen sind in den Patentansprüchen gekennzeichnet.It proves to be particularly advantageous if that Support element as a ring with high bending stiffness is trained. Other preferred embodiments are characterized in the claims.

    Die Erfindung ist in der folgenden Beschreibung und den Zeichnungen, die Ausführungsbeispiele darstellen, näher erläutert.The invention is in the following description and Drawings that illustrate embodiments, closer explained.

    Es zeigen:

  • Fig. 1 einen Schnitt durch eine bekannte Befestigung eines Drainageelementes an der Druckplatte einer Früchtepresse,
  • Fig. 2 einen Schnitt durch eine gummielastische Stulpe mit einem innenliegenden Ring als Stützelement zur Befestigung eines erfindungsgemässen Drainageelementes an der Druckplatte einer Früchtepresse,
  • Fig. 3 einen Schnitt durch eine gummielastische Stulpe mit einem aussenliegenden Ring als Stützelement zur Befestigung eines erfindungsgemässen Drainageelementes an der Druckplatte einer Früchtepresse, und
  • Fig. 4 einen Schnitt durch eine gummielastische Stulpe, welche an ihrem Aussenumfang eine Schulter aufweist, wobei ein Ring als Teil der Schulter in die Stulpe integriert ist.
    • Show it:
  • 1 shows a section through a known fastening of a drainage element to the pressure plate of a fruit press,
  • 2 shows a section through a rubber-elastic cuff with an internal ring as a support element for fastening a drainage element according to the invention to the pressure plate of a fruit press,
  • 3 shows a section through a rubber-elastic cuff with an external ring as a support element for fastening a drainage element according to the invention to the pressure plate of a fruit press, and
  • Fig. 4 shows a section through a rubber-elastic cuff, which has a shoulder on its outer circumference, wherein a ring is integrated into the cuff as part of the shoulder.

    • Fig. 2 zeigt eine Stulpe 8' ähnlich der schon in Fig. 1 gezeigten und erklärten Art. In die Stulpe 8' ist jedoch ein Metallring 23 als Stützelement eingelegt, wobei die Verbindung zwischen Metallring und Stulpe lösbar oder fest sein kann. Der Metallring 23 schliesst im Befestigungsbereich des Drainagekernes 4 gem. Fig. 1 mit dem Innendurchmesser der Stulpe 8' bündig ab und reicht nur so weit, dass sich ungestützte Zonen 24 der Stulpe 8' ergeben.FIG. 2 shows a cuff 8 'similar to that in FIG. 1 shown and explained type. In the cuff 8 ', however a metal ring 23 inserted as a support element, the Connection between metal ring and cuff detachable or firm can be. The metal ring 23 closes in Fastening area of the drainage core 4 acc. Fig. 1 with the inner diameter of the cuff 8 'and is only sufficient so far that unsupported zones 24 of the cuff 8 ' surrender.

    Durch den Metallring 23 sind die oben in Verbindung mit Fig. 1 genannten Nachteile des bekannten Drainageelementes behoben, nämlich die Verformungen an den Nuten 5 für die Drainage und das Herausziehen der gummielastischen Stulpe 8 und des Filters 6 zwischen dem Kernhalter 7 und dem Drainagekern 4. Through the metal ring 23, the above are in connection with Fig. 1 mentioned disadvantages of the known drainage element fixed, namely the deformations on the grooves 5 for the Drainage and pulling out the rubber-elastic cuff 8 and the filter 6 between the core holder 7 and the Drainage core 4.

    Bei dem Ausführungsbeispiel der Stulpe 8' gemäss Fig. 3 wird deren Abstützung durch einen Ring 26 erreicht, welcher mit dem Aussendurchmesser der Stulpe 8' bündig abschliesst. Wie der Ring 23 gemäss Fig. 2 weist auch der Ring 26 gemäss Fig. 3 einen kreisförmigen radialen Querschnitt auf.In the embodiment of the cuff 8 'according to FIG. 3 is supported by a ring 26, which is flush with the outer diameter of the cuff 8 '. Like ring 23 according to FIG. 2, ring 26 also has 3 has a circular radial cross section.

    Fig. 4 zeigt eine Variante der Stulpe 8', bei der der abstützende Ring 28 an deren Aussenumfang als Teil einer Schulter in die Stulpe integriert ist. Damit ist gleichzeitig ein Verschleiss bei der Anlage der Schulter am Kernhalter 7 gem. Fig. 1 reduziert.Fig. 4 shows a variant of the cuff 8 ', in which the supporting ring 28 on its outer circumference as part of a Shoulder is integrated into the cuff. So that is at the same time wear on the shoulder Core holder 7 acc. Fig. 1 reduced.

    Claims (6)

    1. Drainage element (3) for presses for separating liquids from solids, in particular for fruit presses, including a rod-shaped flexible drainage core (4) with flow paths (5) for leading the expressed liquid away out of the pressing space (2) and a liquid-permeable filter cover (6) surrounding the drainage core (4), wherein at least one end of the drainage element (3) can be secured to a juice collecting plate, pressing plate (1) or to the casing of the press, as well as a rubbery-elastic cuff (8, 8') surrounding the drainage core (4) in the securing region and on a free portion connected thereto, characterised by at least one supporting element (23, 26, 28) for the cuff (8'), connected to the latter in such a manner that its deformability in a partial region situated in the securing region is severely limited relative to the remaining part.
    2. Drainage element according to claim 1, characterised in that the supporting element is in the form of a ring (23, 26, 28) with high bending rigidity.
    3. Drainage element according to claim 2, characterised in that the ring (23) is connected to the cuff (8') in such a manner that the internal diameters of the ring and the cuff coincide with one another.
    4. Drainage element according to claim 2, characterised in that the ring (26) is connected to the cuff (8') in such a manner that the external diameters of the ring and the cuff coincide with one another.
    5. Drainage element according to one of claims 3 or 4, characterised in that the ring (23, 26) has a circular radial cross section.
    6. Drainage element according to claim 4, characterised in that the cuff (8') is provided on its external circumference with a shoulder and that the ring (28) is integrated into the cuff as part of the shoulder.
    EP95107456A 1994-06-01 1995-05-17 Drainage element for presses extracting liquid from solid substances Expired - Lifetime EP0685326B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    CH01698/94A CH688121A5 (en) 1994-06-01 1994-06-01 Drainage for presses for separating liquids from solids.
    CH1698/94 1994-06-01

    Publications (2)

    Publication Number Publication Date
    EP0685326A1 EP0685326A1 (en) 1995-12-06
    EP0685326B1 true EP0685326B1 (en) 1998-04-15

    Family

    ID=4216515

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95107456A Expired - Lifetime EP0685326B1 (en) 1994-06-01 1995-05-17 Drainage element for presses extracting liquid from solid substances

    Country Status (5)

    Country Link
    EP (1) EP0685326B1 (en)
    AT (1) ATE165042T1 (en)
    CH (1) CH688121A5 (en)
    DE (1) DE59501882D1 (en)
    ES (1) ES2114708T3 (en)

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CH413599A (en) * 1962-09-21 1966-05-15 Bucher Guyer Ag Masch Press for extracting juice from fruit, grapes and the like
    DE3132466A1 (en) * 1981-08-17 1983-02-24 Bucher-Guyer AG Maschinenfabrik, 8166 Niederweningen, Zürich FASTENING DEVICE FOR A DRAINAGE ELEMENT IN A PRESS
    CH676692A5 (en) * 1988-08-30 1991-02-28 Bucher Guyer Ag Masch
    CH688995A5 (en) * 1994-01-13 1998-07-15 Bucher Guyer Ag Masch Drainage of a press for separating liquids from solids.

    Also Published As

    Publication number Publication date
    CH688121A5 (en) 1997-05-30
    ES2114708T3 (en) 1998-06-01
    DE59501882D1 (en) 1998-05-20
    ATE165042T1 (en) 1998-05-15
    EP0685326A1 (en) 1995-12-06

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