EP1943091A1 - Pellet press - Google Patents

Pellet press

Info

Publication number
EP1943091A1
EP1943091A1 EP06804824A EP06804824A EP1943091A1 EP 1943091 A1 EP1943091 A1 EP 1943091A1 EP 06804824 A EP06804824 A EP 06804824A EP 06804824 A EP06804824 A EP 06804824A EP 1943091 A1 EP1943091 A1 EP 1943091A1
Authority
EP
European Patent Office
Prior art keywords
press
pellet press
rollers
housing
pellet
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.)
Withdrawn
Application number
EP06804824A
Other languages
German (de)
French (fr)
Inventor
Andrea Hermsmeyer
Reto Kraft
Walter HABLÜTZEL
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Publication of EP1943091A1 publication Critical patent/EP1943091A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/208—Roller constructions; Mounting of the rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices
    • B30B15/282—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices using a breakage element

Definitions

  • the invention relates to a pellet press for the production of food dice or the like or of wood pellets, in particular it relates to a roller adjustment in such a pellet press.
  • Granular, floury and / or pasty materials with a wide variety of compositions in the food and non-food sectors have been pressed by means of a pellet press for many years.
  • a generic dicing press is disclosed, for example, in EP-A-371519.
  • the material to be pressed passes from a hopper into a conveyor and dosing and from there into a mixer. Both are arranged above the actual pellet press. From the mixer, the material enters a filling box and a mold lid into the mold.
  • an adjusting device for a pair of press rollers is arranged, wherein the press rollers are adjustable by means of a piston-cylinder unit acting on both press rollers or a split spindle arrangement.
  • the roller carrier shaft is secured against rotation by means of a breaking pin.
  • a press roller adjustment is provided, in which on a base of the main shaft two pairs of yoke-provided lever arms are arranged centrally articulated. The other ends of the lever arms are hinged or rotatably attached to eccentrics of the press rollers, wherein the lever pairs are each connected to one, also hinged to the eccentrics and a displaceable on the base element.
  • the object of the invention is to develop a pellet press, in which the function of the press roller adjustment is further improved and which is safer in case of malfunction.
  • the object is solved with the features of the claim.
  • the adjustment of the press rollers takes place from a pivot bearing, which has an outer sleeve with internal spindles. By means of these spindles eccentric levers of the press rollers are operated and the position of the press rollers is determined exactly.
  • the roller adjustment can be operated electrically, hydraulically or pneumatically.
  • Fig. 1 a front view of the press roller adjustment
  • Fig. 2 a detail of Fig. 1 in a perspective view
  • Fig. 3 pivot bearing of the roller adjustment.
  • the embodiment relates to a pellet press, as described for example in WO 2004/022324 of the applicant.
  • a pellet press the material to be compressed is fed via a pre-container to a doser, which in turn passes specific amounts of the material to a mixer.
  • Steam and additives can be added and then the mixed material reaches at most in a Verweiler, where it lingers for a certain time and is thereby sanitized.
  • the material prepared in this way is fed via a channel to a mold lid, from which it passes via the inserter 1 into the interior of a mold and is pressed there by means of press rollers 12 through radial bores of the mold.
  • the pellets enter a dryer / cooler via a channel.
  • press rollers 12 There are two press rollers 12 are provided (only verbally indicated in Figure 2), which can be moved by means of a roller adjustment against the inner surface of the mold and back.
  • the roller adjustment has a rotatable sleeve 11 in a housing (rotary bearing) 3, which is driven with internal rotating, opposing spindles 4, whose respective other ends are hingedly connected to the roller bearing 2.
  • the adjustment of the press rollers 12 takes place from the housing 3, which is arranged at the center of the roller adjustment.
  • About a gear 10 with rotary ring mounted in the housing 3 sleeve 11 is driven with the internal spindles 4.
  • 6 of the press rollers are actuated, whereby the position of the press rollers 12 is determined.
  • the position of the housing 3 is chosen so that it comes to the traction in the entire role adjustment and a closed power flow is generated. Thus occur in the center of the housing 3 no forces, allowing a simple and trouble-free operation of the roller adjustment.
  • each press roller bearing 2 is guided in three plate-shaped levers 5, 6, wherein an inner lever 6 is surrounded by two outer levers 5.
  • the levers 5, 6 are further connected by means of a breaking pin 7.
  • This breaking bolt 7 breaks at a predetermined overload, so that the pressing rollers pivot inwardly in the direction of axis 8 of the main shaft.
  • the mold is held by means of a ring attached to a rotatable mold carrier and a pressure ring.
  • the drive of the mold carrier takes place in the usual way via a main shaft.
  • a fluidic element in the form of an annular air cushion is arranged in the direction of the ring, which by filling with a Fluid allows axial movement of the pressure ring and thus a simple repulsion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Glanulating (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

The invention relates to a pellet press for pressing, by means of pressing rollers, mealy or granular material through radial bores of a mould. The operation of the pressing rollers, which are, in particular, adjustable pressing rollers, is to be secured more reliably against overload, and the pressing rollers can be adjusted by means of a rotatably mounted housing (3) and oppositely directed spindles (4) rotating internally within the housing (3).

Description

Pelletpresse pellet Press
Die Erfindung betrifft eine Pelletpresse zur Herstellung von Futterwürfeln oder dergleichen oder auch von Holzpellets, insbesondere betrifft sie eine Rollenverstellung in einer solchen Pelletpresse.The invention relates to a pellet press for the production of food dice or the like or of wood pellets, in particular it relates to a roller adjustment in such a pellet press.
Mittels Pelletpresse werden seit vielen Jahren körnige, mehlige und/oder pastöse Materialien mit unterschiedlichsten Zusammensetzungen im Food- und Nonfoodbereich ver- presst.Granular, floury and / or pasty materials with a wide variety of compositions in the food and non-food sectors have been pressed by means of a pellet press for many years.
Sie weisen Pressformen und Abstreifer auf um Pellets bzw. Würfel in gewünschter Qualität und Grosse herzustellen. Eine gattungsgemässe Würfelpresse ist zum Beispiel in der EP-A-371519 offenbart. Das zu verpressende Material gelangt aus einem Einfülltrichter in einen Förder- und Dosierapparat und von dort in einen Mischer. Beide sind oberhalb der eigentlichen Pelletpresse angeordnet. Vom Mischer gelangt das Material in einen Einfüllkasten und über einen Formdeckel in die Pressform. Innerhalb der Pressform ist eine Verstelleinrichtung für ein Pressrollenpaar angeordnet, wobei die Pressrollen mittels einer, auf beide Pressrollen wirkenden Kolben-Zylindereinheit oder einer geteilten Spindelanordnung verstellbar sind. Die Rollenträgerwelle ist mittels eines Brechbolzens gegen Rotation gesichert.They have molds and scrapers to produce pellets or cubes in the desired quality and size. A generic dicing press is disclosed, for example, in EP-A-371519. The material to be pressed passes from a hopper into a conveyor and dosing and from there into a mixer. Both are arranged above the actual pellet press. From the mixer, the material enters a filling box and a mold lid into the mold. Within the mold, an adjusting device for a pair of press rollers is arranged, wherein the press rollers are adjustable by means of a piston-cylinder unit acting on both press rollers or a split spindle arrangement. The roller carrier shaft is secured against rotation by means of a breaking pin.
Weitere Verstelleinrichtungen für Pressrollen mittels zweier Kolben-Zylinderanordnungen sind in der NL-A-9302236 oder EP-A-956943 offenbart.Further adjusting devices for press rolls by means of two piston-cylinder arrangements are disclosed in NL-A-9302236 or EP-A-956943.
Gemäss WO 2004/022324 o. a. kann zwischen Mischer und Presse noch mindestens ein Verweiler angeordnet sein um die Hygienisierung des Produktes zu verbessern. Weiterhin ist eine Pressrollen-Verstellung vorgesehen, bei der auf einer Basis der Hauptwelle zwei Paar mit einem Joch versehene Hebelarme mittig gelenkig angeordnet sind. Die anderen Enden der Hebelarme sind gelenkig bzw. drehbar an Excentern der Pressrollen befestigt, wobei die Hebelpaare mit je einem, ebenfalls an den Excentern angelenkten und einem auf der Basis verschiebbaren Element verbunden sind. Die Aufgabe der Erfindung besteht darin, eine Pelletpresse zu entwickeln, bei der die Funktion der Pressrollen-Verstellung weiter verbessert wird und die bei Betriebsstörungen sicherer ist.According to WO 2004/022324 or the like, it is possible to arrange at least one dwelling between mixer and press in order to improve the hygienisation of the product. Furthermore, a press roller adjustment is provided, in which on a base of the main shaft two pairs of yoke-provided lever arms are arranged centrally articulated. The other ends of the lever arms are hinged or rotatably attached to eccentrics of the press rollers, wherein the lever pairs are each connected to one, also hinged to the eccentrics and a displaceable on the base element. The object of the invention is to develop a pellet press, in which the function of the press roller adjustment is further improved and which is safer in case of malfunction.
Die Aufgabe ist mit den Merkmalen des Patentanspruchs gelöst. Die Verstellung der Pressrollen erfolgt von einem Drehlager aus, das eine elagerte Hülse mit innenliegenden Spindeln aufweist. Mittels dieser Spindeln werden Exzenterhebel der Pressrollen betätigt und die Position der Pressrollen wird exakt bestimmt.The object is solved with the features of the claim. The adjustment of the press rollers takes place from a pivot bearing, which has an outer sleeve with internal spindles. By means of these spindles eccentric levers of the press rollers are operated and the position of the press rollers is determined exactly.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen offenbart. So sind Hebel an diesen Spindeln angelenkt. Weiterhin kann die Verstellung der Pressrollen in Weiterentwicklung der Offenbarung der EP-A-371519 dergestalt erfolgen, dass eine drehende Hülse mit innendrehenden, entgegen gerichteten Spindelstücken vorgesehen ist.Advantageous embodiments are disclosed in the subclaims. So levers are hinged to these spindles. Furthermore, the adjustment of the press rollers in a further development of the disclosure of EP-A-371519 take place in such a way that a rotating sleeve is provided with innenendrehenden, oppositely directed spindle pieces.
Durch die bedarfsweise Anordnung eines Brechbolzens an mindestens einer oder jeder Pressrolle wird bei extremer Überlast oder anderen Funktionsstörungen eine Beschädigung der Form und der Pressrollen verhindert und somit die Maschine geschont. Dies auch dann, wenn ein evtl. Brechbolzen auf der Hauptwelle selbst nicht beansprucht wird.The need-based arrangement of a breaking pin on at least one or each press roller damage to the mold and the press rollers is prevented in extreme overload or other malfunctions and thus spared the machine. This also, if a possible breaking bolt on the main shaft itself is not claimed.
Die Rollenverstellung kann elektrisch, hydraulisch oder pneumatisch betrieben werden.The roller adjustment can be operated electrically, hydraulically or pneumatically.
Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand einer Zeichnung näher beschrieben. In der Zeichnung zeigen dieThe invention will be described below in an embodiment with reference to a drawing. In the drawing show the
Fig. 1 : eine Vorderansicht der Pressrollen-VerstellungFig. 1: a front view of the press roller adjustment
Fig. 2: . einen Ausschnitt der Fig. 1 in perspektivischer DarstellungFig. 2:. a detail of Fig. 1 in a perspective view
Fig. 3: Drehlager der Rollenverstellung.Fig. 3: pivot bearing of the roller adjustment.
Das Ausführungsbeispiel bezieht sich auf eine Pelletpresse, wie sie zum Beispiel in der WO 2004/022324 der Anmelderin beschrieben ist. Bei einer solchen Pelletpresse wird das zu verpressende Material über einen Vorbehälter einem Dosierer zugeführt, der wiederum spezifische Mengen des Materials an einen Mischer weiterleitet. Im Mischer können Dampf und Zusatzstoffe zugegeben werden und anschliessend gelangt das gemischte Material allenfalls in einen Verweiler, in dem es eine bestimmte Zeit verweilt und dabei hygienisiert wird. Das so vorbereitete Material wird über einen Kanal einem Formdeckel zugeleitet, von dem es über Einstreifer 1 in das Innere einer Form gelangt und dort mit Hilfe von Pressrollen 12 durch radiale Bohrungen der Form hindurchge- presst wird. Über einen Kanal gelangen die Pellets in einen Trockner/Kühler.The embodiment relates to a pellet press, as described for example in WO 2004/022324 of the applicant. In such a pellet press, the material to be compressed is fed via a pre-container to a doser, which in turn passes specific amounts of the material to a mixer. In the mixer Steam and additives can be added and then the mixed material reaches at most in a Verweiler, where it lingers for a certain time and is thereby sanitized. The material prepared in this way is fed via a channel to a mold lid, from which it passes via the inserter 1 into the interior of a mold and is pressed there by means of press rollers 12 through radial bores of the mold. The pellets enter a dryer / cooler via a channel.
Es sind zwei Pressrollen 12 vorgesehen ( in der Figur 2 nur verbal angedeutet), die mittels einer Rollenverstellung gegen die Innenfläche der Form und retour bewegt werden können. Die Rollenverstellung weist eine drehbare Hülse 11 in einem Gehäuse (Drehlager) 3, die angetrieben wird, mit innendrehenden, entgegen gerichteten Spindeln 4 auf, deren jeweils andere Enden mit der Rollenlagerung 2 gelenkig verbunden sind. Die Verstellung der Pressrollen 12 erfolgt vom Gehäuse 3 aus, welches im Mittelpunkt der Rollenverstellung angeordnet ist. Über ein Getriebe 10 mit Drehring wird die im Gehäuse 3 gelagerte Hülse 11 mit den innen liegenden Spindeln 4 angetrieben. Mittels der Spindeln 4 werden Exzenterhebel 5, 6 der Pressrollen betätigt, wodurch die Position der Pressrollen 12 bestimmt wird.There are two press rollers 12 are provided (only verbally indicated in Figure 2), which can be moved by means of a roller adjustment against the inner surface of the mold and back. The roller adjustment has a rotatable sleeve 11 in a housing (rotary bearing) 3, which is driven with internal rotating, opposing spindles 4, whose respective other ends are hingedly connected to the roller bearing 2. The adjustment of the press rollers 12 takes place from the housing 3, which is arranged at the center of the roller adjustment. About a gear 10 with rotary ring mounted in the housing 3 sleeve 11 is driven with the internal spindles 4. By means of the spindles 4 eccentric 5, 6 of the press rollers are actuated, whereby the position of the press rollers 12 is determined.
Die Position des Gehäuses 3 ist so gewählt, dass es in der gesamten Rollenverstellung zum Kraftschluss kommt und ein geschlossener Kraftfluss erzeugt wird. Somit treten im Mittelpunkt des Gehäuses 3 keine Kräfte auf, was einen einfachen und störungsfreien Betrieb der Rollenverstellung ermöglicht.The position of the housing 3 is chosen so that it comes to the traction in the entire role adjustment and a closed power flow is generated. Thus occur in the center of the housing 3 no forces, allowing a simple and trouble-free operation of the roller adjustment.
Bei einer Ausführung mit Brechbolzen ist jedes Pressrollenlager 2 in drei plattenförmi- gen Hebeln 5, 6 geführt, wobei ein innerer Hebel 6 von zwei äusseren Hebeln 5 umgeben ist. Die Hebel 5, 6 sind weiterhin mittels eines Brechbolzens 7 verbunden. Dieser Brechbolzen 7 bricht bei einer vorbestimmten Überlast, so dass die Pressrollen nach innen in Richtung Achse 8 der Hauptwelle schwenken.In an embodiment with shear pins, each press roller bearing 2 is guided in three plate-shaped levers 5, 6, wherein an inner lever 6 is surrounded by two outer levers 5. The levers 5, 6 are further connected by means of a breaking pin 7. This breaking bolt 7 breaks at a predetermined overload, so that the pressing rollers pivot inwardly in the direction of axis 8 of the main shaft.
Die Form ist mittels eines an einem drehbaren Formträger befestigten Ringes und eines Druckringes gehalten. Der Antrieb des Formträgers erfolgt in üblicher weise über eine Hauptwelle. Hinter dem Druckring ist in Richtung des Ringes ein fluidisches Element in Form eines ringförmigen Luftkissens angeordnet, welches durch Befüllung mit einem Fluid ein axiales Verfahren des Druckringes und somit ein einfaches Abstossen ermöglicht. The mold is held by means of a ring attached to a rotatable mold carrier and a pressure ring. The drive of the mold carrier takes place in the usual way via a main shaft. Behind the pressure ring, a fluidic element in the form of an annular air cushion is arranged in the direction of the ring, which by filling with a Fluid allows axial movement of the pressure ring and thus a simple repulsion.
Bezugszeichenreference numeral
Einstreifer Pressrollenlager Gehäuse (Drehlager) Spindel Hebel Hebel Brechbolzen AchseSingle roller Press roller bearing Housing (pivot bearing) Spindle Lever Lever Breaking pin Axle
Getriebe Hülse Pressrolle Gear sleeve press roller

Claims

Patentansprüche claims
1. Pelletpresse zum Verpressen von mehligem oder körnigem Material mittels Pressrollen durch radiale Bohrungen einer Form hindurch zu Pellets, dadurch gekennzeichnet, dass die Pressrollen (12) mittels eines drehend gelagerten Gehäuses (3) und entgegen gerichteten, im Gehäuse (3) innendrehenden Spindeln (4) verstellbar sind.1. pellet press for pressing mealy or granular material by means of pressing rollers through radial holes of a mold through to pellets, characterized in that the press rollers (12) by means of a rotatably mounted housing (3) and oppositely directed, in the housing (3) inside rotating spindles ( 4) are adjustable.
2. Pelletpresse nach Anspruch 1 , dadurch gekennzeichnet, dass die Pressrollen durch mit den Spindeln (4) gelenkig verbundene Excenterhebel (5, 6) verstellbar angeordnet sind.2. pellet press according to claim 1, characterized in that the pressing rollers are arranged by means of the spindles (4) hingedly connected eccentric lever (5, 6) adjustable.
3. Pelletpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mindestens eine Pressrolle (12) einen Hebel (6) mit Brechbolzen (7) aufweist.3. pellet press according to claim 1 or 2, characterized in that at least one press roller (12) has a lever (6) with shear pin (7).
4. Pelletpresse nach Anspruch 3, dadurch gekennzeichnet, dass jede Pressrolle in einer Hebelanordnung mit einem Brechbolzen (7) gelagert ist. 4. pellet press according to claim 3, characterized in that each press roller is mounted in a lever arrangement with a breaking pin (7).
EP06804824A 2005-10-31 2006-10-23 Pellet press Withdrawn EP1943091A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005052399A DE102005052399A1 (en) 2005-10-31 2005-10-31 Pellet press for grouting of flour or granular material, has press roll whereby each press roll is pivot mounted in lever system with rupture bolt
PCT/CH2006/000590 WO2007051325A1 (en) 2005-10-31 2006-10-23 Pellet press

Publications (1)

Publication Number Publication Date
EP1943091A1 true EP1943091A1 (en) 2008-07-16

Family

ID=37546877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06804824A Withdrawn EP1943091A1 (en) 2005-10-31 2006-10-23 Pellet press

Country Status (6)

Country Link
EP (1) EP1943091A1 (en)
CN (1) CN101300128B (en)
BR (1) BRPI0618132A2 (en)
DE (1) DE102005052399A1 (en)
RU (1) RU2008121912A (en)
WO (1) WO2007051325A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102049873B (en) * 2010-11-12 2013-10-02 淮安苏减金象机械制造有限公司 High-pressure ball pressing machine
EP2701898A1 (en) * 2011-04-29 2014-03-05 Andritz AG Method of controlling a pellet mill
RU188710U1 (en) * 2018-09-20 2019-04-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Оренбургский государственный университет" Press Granulator
RU2734217C1 (en) 2020-02-06 2020-10-13 Общество с ограниченной ответственностью "Машиностроительная компания "Технэкс" Mechanism for adjusting position of pressure rollers relative to press-shape of press-pelletizer

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Publication number Priority date Publication date Assignee Title
CH431250A (en) * 1963-09-30 1967-02-28 Muehlenbau Dresden Veb Pressing device for press rollers in concentrate presses
EP0231764B1 (en) * 1986-01-24 1991-12-27 Bühler Ag Pellet press
NL9302236A (en) * 1993-12-22 1995-07-17 Cpm Europ B V Adjustment mechanism for a granulating mill
CN2258425Y (en) * 1995-06-20 1997-07-30 巩义市长城镁冶设备厂 High pressure ball making machine by pressing between pair of rollers
EP0956943A1 (en) * 1998-05-12 1999-11-17 Consolidated Process Machinery Inc. Pellet mill
CN2352249Y (en) * 1998-07-30 1999-12-08 陈洪谋 Rolling bearing type pressing mfg. ball machine
DE10241118A1 (en) * 2002-09-03 2004-03-18 Bühler AG pellet mill
DK1597057T3 (en) * 2003-02-21 2012-07-16 Andritz Feed & Biofuel As Roll adjustment apparatus for an extrusion mill

Non-Patent Citations (1)

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Title
See references of WO2007051325A1 *

Also Published As

Publication number Publication date
CN101300128A (en) 2008-11-05
RU2008121912A (en) 2009-12-10
CN101300128B (en) 2012-11-28
DE102005052399A1 (en) 2007-05-03
BRPI0618132A2 (en) 2018-07-10
WO2007051325A1 (en) 2007-05-10

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