EP2511014B1 - Roller screen separating device - Google Patents

Roller screen separating device Download PDF

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Publication number
EP2511014B1
EP2511014B1 EP20110003153 EP11003153A EP2511014B1 EP 2511014 B1 EP2511014 B1 EP 2511014B1 EP 20110003153 EP20110003153 EP 20110003153 EP 11003153 A EP11003153 A EP 11003153A EP 2511014 B1 EP2511014 B1 EP 2511014B1
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EP
European Patent Office
Prior art keywords
shafts
eccentric discs
movable
eccentric
frame
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EP20110003153
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German (de)
French (fr)
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EP2511014A1 (en
Inventor
Richard Seifried
Gerd Wagner
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August Mueller & Co KG GmbH
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August Mueller & Co KG GmbH
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Priority to EP20110003153 priority Critical patent/EP2511014B1/en
Publication of EP2511014A1 publication Critical patent/EP2511014A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers

Definitions

  • the present invention relates to a roller grate screening device for screening material according to the preamble of claim 1, comprising a plurality of mutually parallel, rotatably mounted in a frame, drivable waves, such as from EP 1 287 730 A1 known. Between the waves of a section changeable gap widths are adjustable.
  • the gap widths are adjustable by a linear adjustment of the waves.
  • This adjustment usually leads to a displacement of the waves of this section in a horizontal plane or in an inclined plane which is spanned by the axes of further waves of the known devices.
  • Also in the horizontal there is an axial movement of the waves, as in DE 520 370 proposed.
  • roller grate screening devices are used for example in the sorting of waste materials and in the treatment of building materials containing sand, earth, stones of different sizes and the like. As a material.
  • the object is an adjustment of gap widths by means of a robust as possible executable and as simple as possible to realize controllable Verstellmimik. Another advantage would be a further improvement of the screening performance.
  • the invention is based on the idea that an adjustment of the waves from the horizontal can also lead to the desired adjustment of the gap width.
  • this object is achieved in a generic roller grate screening device with the features of the characterizing part of claim 1, characterized in that the waves are received with adjustable gap width with bearings in the roller grate screening device, each with respect to the roller grate screening device on an arc section have movable center of rotation.
  • Inventive bearings of the shafts with adjustable gap width are movable relative to a frame of the roller grate screening device such that movement of the shafts from the otherwise horizontal plane of further waves of the roller grate screening device is achieved.
  • the frame has eccentric discs in the second section on both sides of the movable shafts.
  • the eccentric discs are aligned with their axes parallel to the movable shafts about the center of the eccentric discs rotatably mounted in the frame.
  • the movable shafts are mounted eccentrically in the eccentric discs, so that the respective movable center of rotation of the bearings of the movable shafts is guided by the eccentric discs on a circular arc section.
  • the respective eccentric dimension of the eccentric disks increases in the direction of flow for each eccentric disk by an equal amount, so that a second gap width is obtained between each of the shafts in the second section.
  • roller grate screening device the movement of the turning centers on the bow sections by a single, mechanically coupled adjusting element, in particular a hydraulic cylinder, executable.
  • the adjusting element via an electro-hydraulic locking system is securable.
  • FIGS. 1 . 2 and 4a to 4c show the roller grate screening device 10 according to the invention in a single embodiment in plan view, side view of a first side and side views of a second side with schematically shown eccentric discs 30.
  • one of the eccentric discs 30 is shown separately in an axial section.
  • FIGS. 4a to 4c illustrate an adjustability of the movable shafts 24 by representations in the open position, middle position and closed position.
  • Fig. 1 the roller grate screening device 10 according to the invention for screening of material with nine mutually parallel, rotatably mounted in a frame 12 shafts 14, 24 is shown.
  • a first of the shafts 14 is partially covered on a task side 13 of adireblech. From the feed side 13, discontinued material moves in a flow direction 11 initially over five shafts 14 in a first section 16 and subsequently over four movable shafts 24 in a second section 26 during operation of the roller grate screening device 10.
  • a first gap 17 is formed between the shafts 14 of the first section 16. Between the shafts 14, 24 at the boundary of the first and second sections and between the movable shafts 24 of the second section 26, a second gap width 27 is adjustable.
  • All shafts 14, 24 are individually driven by means of drives 35. Their respective speed can be controlled by means of a controller.
  • the fixed position of the first turning centers 18 results from a bearing of the shafts 14 of the first section 16 directly in the frame 12 and its likewise stationary side walls.
  • the shafts 24 of the second section 26 are not rotatably mounted directly in the side walls of the frame 12, but in the eccentric discs 30.
  • the eccentric discs 30 are in turn connected at the same distance in the flow direction 11 in succession in their respective center rotatably connected to the respective side wall.
  • Each of the four successive eccentric discs 30 in the illustrations of Figures 2 and 4a to 4c has another eccentric measure. Viewed in the flow direction 11 increases with each additional eccentric disc 30, the eccentric, so that it is at a rotation of the eccentric discs 30 for all eccentric discs 30 same angle to uniform second gap widths 27 comes.
  • the respective center of the eccentric disk 30 could be mounted rotatably in the respective side wall offset by a corresponding amount with respect to the horizontal. Then, in a position of the eccentric discs 30, a flat surface on the shafts 14, 24 of the roller grate screening device 10 would be achievable.
  • the structure of the eccentric disc 30 is particularly in Fig. 3 clearly visible. Radially outside the eccentric disc 30 is rotatably mounted in a bearing housing 36 of the frame 12. A spherical roller bearing 37 is accommodated eccentrically in a radially inner region of the eccentric disk 30. Axially remote from the respective shaft 24, the spherical roller bearing 37 is closed by a cover, wherein an adjusting arm 34 is designed to project in the radial direction in one piece with the cover. Axially facing the respective movable shaft 24, the spherical roller bearing 37 is fastened with a wiper cover 38 under customary cooperation with an eccentric wiper 39 against the eccentric disk 30.
  • FIGS. 4a to 4c it can be seen how when changing from an open position ( Fig. 4a ) about a middle position ( Fig. 4b ) in a closed position (4c), the second gap width 27a, 27b, 27c changed.

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  • Combined Means For Separation Of Solids (AREA)

Description

Die vorliegende Erfindung betrifft eine Rollenrost-Siebvorrichtung zum Sieben von Material nach dem Oberbegriff des Patentanspruchs 1, umfassend eine Mehrzahl von zueinander parallel angeordneten, drehbar in einem Rahmen gelagerten, antreibbaren Wellen, wie beispielsweise aus EP 1 287 730 A1 bekannt. Zwischen den Wellen eines Abschnittes sind veränderbare Spaltweiten einstellbar.The present invention relates to a roller grate screening device for screening material according to the preamble of claim 1, comprising a plurality of mutually parallel, rotatably mounted in a frame, drivable waves, such as from EP 1 287 730 A1 known. Between the waves of a section changeable gap widths are adjustable.

Bei bekannten Vorrichtungen dieser Gattung sind die Spaltweiten durch eine lineare Verstellung der Wellen einstellbar. Diese Verstellung führt üblicherweise zu einer Verschiebung der Wellen dieses Abschnittes in einer horizontalen Ebene oder in einer schrägen Ebene, die durch Achsen weiterer Wellen der bekannten Vorrichtungen aufgespannt wird. Ebenfalls in der Horizontalen erfolgt eine axiale Bewegung der Wellen, wie in DE 520 370 vorgeschlagen.In known devices of this type, the gap widths are adjustable by a linear adjustment of the waves. This adjustment usually leads to a displacement of the waves of this section in a horizontal plane or in an inclined plane which is spanned by the axes of further waves of the known devices. Also in the horizontal, there is an axial movement of the waves, as in DE 520 370 proposed.

Derartige Rollenrost-Siebvorrichtungen werden beispielsweise beim Sortieren von Abfallmaterialien und beim Aufbereiten von Baustoffen eingesetzt, die Sand, Erde, unterschiedlich große Steine und dgl. als Material enthalten.Such roller grate screening devices are used for example in the sorting of waste materials and in the treatment of building materials containing sand, earth, stones of different sizes and the like. As a material.

Auf Grund von unterschiedlichen Witterungsverhältnissen, Rohstoffvorkommen und Anforderungen an abzusiebende Korngrößen kann es für Betreiber von Brechanlagen interessant sein, einen Rollenrost mit verstellbaren Spaltweiten einzusetzen.Due to different weather conditions, deposits of raw materials and demands on sieve sizes to be screened, it may be interesting for operators of crushers to use a roller grate with adjustable gap widths.

Vor dem Hintergrund des oben genannten Stands der Technik stellt sich die Aufgabe, eine Verstellung von Spaltweiten mittels einer möglichst robust ausführbaren und möglichst einfach ansteuerbaren Verstellmimik zu realisieren. Vorteilhaft wäre auch eine weitere Verbesserung der Siebleistung.
Der Erfindung liegt die Idee zu Grunde, dass auch eine Verstellung der Wellen aus der Horizontalen hinaus zu der gewünschten Verstellung der Spaltweite führen kann.Against the background of the above-mentioned prior art, the object is an adjustment of gap widths by means of a robust as possible executable and as simple as possible to realize controllable Verstellmimik. Another advantage would be a further improvement of the screening performance.
The invention is based on the idea that an adjustment of the waves from the horizontal can also lead to the desired adjustment of the gap width.

Erfindungsgemäß wird diese Aufgabe bei einer gattungsgemäßen Rollenrost-Siebvorrichtung mit den Merkmalen des Kennzeichens des Patentanspruchs 1 dadurch gelöst, dass die Wellen mit verstellbarer Spaltweite mit Lagerungen in der Rollenrost-Siebvorrichtung aufgenommen sind, die jeweils ein im Bezug zu der Rollenrost-Siebvorrichtung auf einem Bogenabschnitt bewegbares Drehzentrum aufweisen. Erfindungsgemäße Lagerungen der Wellen mit verstellbarer Spaltweite sind gegenüber einem Rahmen der Rollenrost-Siebvorrichtung derart bewegbar, dass eine Bewegung der Wellen aus der sonst horizontalen Ebene weiterer Wellen der Rollenrost-Siebvorrichtung hinaus erreicht wird.According to the invention this object is achieved in a generic roller grate screening device with the features of the characterizing part of claim 1, characterized in that the waves are received with adjustable gap width with bearings in the roller grate screening device, each with respect to the roller grate screening device on an arc section have movable center of rotation. Inventive bearings of the shafts with adjustable gap width are movable relative to a frame of the roller grate screening device such that movement of the shafts from the otherwise horizontal plane of further waves of the roller grate screening device is achieved.

Der Rahmen weist in dem zweiten Abschnitt beidseits der bewegbaren Wellen Exzenterscheiben auf. Die Exzenterscheiben sind mit ihren Achsen parallel zu den bewegbaren Wellen ausgerichtet um das Zentrum der Exzenterscheiben drehbar in dem Rahmen gelagert. Die bewegbaren Wellen sind exzentrisch in den Exzenterscheiben gelagert, sodass das jeweilige bewegbare Drehzentrum der Lagerungen der bewegbaren Wellen mittels der Exzenterscheiben auf einem Kreisbogenabschnitt geführt ist.The frame has eccentric discs in the second section on both sides of the movable shafts. The eccentric discs are aligned with their axes parallel to the movable shafts about the center of the eccentric discs rotatably mounted in the frame. The movable shafts are mounted eccentrically in the eccentric discs, so that the respective movable center of rotation of the bearings of the movable shafts is guided by the eccentric discs on a circular arc section.

Die in der Flussrichtung hintereinander angeordneten Exzenterscheiben weisen unterschiedliche Exzentermaße auf, wobei Abstände zwischen den Zentren benachbarter Exzenterscheiben gleich sind.The successively arranged in the flow direction eccentric discs have different Exzentermaße, wherein distances between the centers of adjacent eccentric discs are the same.

Nach einer vorteilhaften Ausführungsform der Rollenrost-Siebvorrichtung wächst das jeweilige Exzentermaß der Exzenterscheiben der Flussrichtung folgend für jede Exzenterscheibe um einen gleichen Betrag an, sodass sich eine zwischen jeder der Wellen im zweiten Abschnitt gleiche zweite Spaltweite ergibt.According to an advantageous embodiment of the roller grate screening device, the respective eccentric dimension of the eccentric disks increases in the direction of flow for each eccentric disk by an equal amount, so that a second gap width is obtained between each of the shafts in the second section.

Nach einer weiteren vorteilhaften Ausführungsform der Rollenrost-Siebvorrichtung ist die Bewegung der Drehzentren auf den Bogenabschnitten durch ein einziges, mechanisch ankoppelbares Verstellelement, insbesondere einen Hydraulikzylinder, ausführbar.According to a further advantageous embodiment of the roller grate screening device, the movement of the turning centers on the bow sections by a single, mechanically coupled adjusting element, in particular a hydraulic cylinder, executable.

Nach einer weiteren vorteilhaften Ausführungsform der Röllenrost-Siebvorrichtung ist das Verstellelement über ein elektro-hydraulisches Verriegelungssystem sicherbar.According to a further advantageous embodiment of the Röllenrost screening device, the adjusting element via an electro-hydraulic locking system is securable.

Die Erfindung wird im Folgenden an einer einfachen Ausführungsform anhand der Zeichnungen erläutert. Es zeigen:

Fig. 1
eine Draufsicht auf die erfindungsgemäße Rollenrost-Siebvorrichtung mit vier bewegbaren Wellen,
Fig. 2
eine Seitenansicht der Rollenrost-Siebvorrichtung aus Fig. 1 von einer ersten Seite mit einem Verstellelement für die vier bewegbaren Wellen,
Fig. 3
einen Axialschnitt durch eine die bewegbare Welle aus Fig. 1 aufnehmende Exzenterscheibe,
Fig. 4a
eine weitere Seitenansicht der erfindungsgemäßen Rollenrost-Siebvorrichtung aus Fig. 1 von einer zweiten Seite mit schematisiert dargestellten Exzenterscheiben,
Fig. 4a
eine weitere Seitenansicht der erfindungsgemäßen Rollenrost-Siebvorrichtung aus Fig. 1 von einer zweiten Seite mit schematisiert dargestellten Exzenterscheiben, wobei sich die bewegbaren Wellen in einer Offenstellung befinden,
Fig. 4b
die Seitenansicht gemäß Fig. 4a, wobei sich die bewegbaren Wellen in einer Mittelstellung befinden, und
Fig. 4c
eine Seitenansicht gemäß Fig. 4a, wobei sich die bewegbaren Wellen in einer Geschlossenstellung befinden.
The invention will be explained below with reference to a simple embodiment with reference to the drawings. Show it:
Fig. 1
a plan view of the roller grate screening device according to the invention with four movable shafts,
Fig. 2
a side view of the roller grate screening device Fig. 1 from a first side with an adjustment element for the four movable shafts,
Fig. 3
an axial section through a movable shaft Fig. 1 receiving eccentric disc,
Fig. 4a
another side view of the roller grate screening device according to the invention Fig. 1 from a second side with schematically represented eccentric discs,
Fig. 4a
another side view of the roller grate screening device according to the invention Fig. 1 from a second side with schematically represented eccentric discs, wherein the movable shafts are in an open position,
Fig. 4b
the side view according to Fig. 4a , wherein the movable shafts are in a central position, and
Fig. 4c
a side view according to Fig. 4a , wherein the movable shafts are in a closed position.

Die Figuren 1, 2 und 4a bis 4c zeigen die erfindungsgemäße Rollenrost-Siebvorrichtung 10 in einem einzigen Ausführungsbeispiel in Draufsicht, Seitenansicht von einer ersten Seite und Seitenansichten von einer zweiten Seite mit schematisch dargestellten Exzenterscheiben 30. In der Fig. 3 ist eine der Exzenterscheiben 30 separat in einem Axialschnitt dargestellt. Insbesondere die Figuren 4a bis 4c verdeutlichen eine Verstellbarkeit der bewegbaren Wellen 24 durch Darstellungen in Offenstellung, Mittelstellung und Geschlossenstellung.The FIGS. 1 . 2 and 4a to 4c show the roller grate screening device 10 according to the invention in a single embodiment in plan view, side view of a first side and side views of a second side with schematically shown eccentric discs 30. In the Fig. 3 one of the eccentric discs 30 is shown separately in an axial section. especially the FIGS. 4a to 4c illustrate an adjustability of the movable shafts 24 by representations in the open position, middle position and closed position.

In Fig. 1 ist die erfindungsgemäße Rollenrost-Siebvorrichtung 10 zum Sieben von Material mit neun zueinander parallel angeordneten, drehbar in einem Rahmen 12 gelagerten Wellen 14, 24 gezeigt. Eine erste der Wellen 14 ist auf einer Aufgabeseite 13 von einem Aufgabeblech teilweise überdeckt. Von der Aufgabeseite 13 aus bewegt sich bei Betrieb der Rollenrost-Siebvorrichtung 10 aufgegebenes Material in einer Flussrichtung 11 zunächst über fünf Wellen 14 in einem ersten Abschnitt 16 und nachfolgend über vier bewegbare Wellen 24 in einem zweiten Abschnitt 26.In Fig. 1 the roller grate screening device 10 according to the invention for screening of material with nine mutually parallel, rotatably mounted in a frame 12 shafts 14, 24 is shown. A first of the shafts 14 is partially covered on a task side 13 of a Aufgabeblech. From the feed side 13, discontinued material moves in a flow direction 11 initially over five shafts 14 in a first section 16 and subsequently over four movable shafts 24 in a second section 26 during operation of the roller grate screening device 10.

Zwischen den Wellen 14 des ersten Abschnittes 16 ist eine erste Spaltweite 17 ausgebildet. Zwischen den Wellen 14, 24 an der Grenze des ersten und zweiten Abschnittes sowie zwischen den bewegbaren Wellen 24 des zweiten Abschnittes 26 ist eine zweite Spaltweite 27 einstellbar.Between the shafts 14 of the first section 16, a first gap 17 is formed. Between the shafts 14, 24 at the boundary of the first and second sections and between the movable shafts 24 of the second section 26, a second gap width 27 is adjustable.

Sämtliche Wellen 14, 24 sind einzeln mittels Antrieben 35 antreibbar. Ihre jeweilige Drehzahl ist mittels einer Steuerung regelbar.All shafts 14, 24 are individually driven by means of drives 35. Their respective speed can be controlled by means of a controller.

Aus den Figuren 2 und 3 wird der wesentliche Unterschied in der Lagerung der rotierenden Wellen 14, 24 in ihrem jeweiligen Abschnitt 16, 26 deutlich. So haben die in den Figuren 2 und 3 nicht sichtbaren Wellen 14 des ersten Abschnittes 16 jeweils ein feststehendes Drehzentrum 18 in dem Rahmen 12. Die ebenfalls nicht sichtbaren bewegbaren Wellen 24 des zweiten Abschnittes 26 weisen jeweils ein bewegbares Drehzentrum 28 auf.From the Figures 2 and 3 the significant difference in the mounting of the rotating shafts 14, 24 in their respective section 16, 26 becomes clear. So have the in the Figures 2 and 3 non-visible shafts 14 of the first section 16 each have a fixed center of rotation 18 in the frame 12. The also not visible movable shafts 24 of the second section 26 each have a movable center of rotation 28.

Die feststehende Position der ersten Drehzentren 18 ergibt sich aus einer Lagerung der Wellen 14 des ersten Abschnittes 16 unmittelbar in dem Rahmen 12 bzw. dessen ebenfalls ortsfesten Seitenwänden. Die Wellen 24 des zweiten Abschnittes 26 sind nicht direkt in den Seitenwänden des Rahmens 12 drehbar gelagert, sondern in den Exzenterscheiben 30. Die Exzenterscheiben 30 wiederum sind in gleichem Abstand in Flussrichtung 11 hintereinander in ihrem jeweiligen Zentrum drehbar gelagert mit der jeweiligen Seitenwand verbunden.The fixed position of the first turning centers 18 results from a bearing of the shafts 14 of the first section 16 directly in the frame 12 and its likewise stationary side walls. The shafts 24 of the second section 26 are not rotatably mounted directly in the side walls of the frame 12, but in the eccentric discs 30. The eccentric discs 30 are in turn connected at the same distance in the flow direction 11 in succession in their respective center rotatably connected to the respective side wall.

Jede der vier aufeinander folgenden Exzenterscheiben 30 in den Darstellungen der Figuren 2 und 4a bis 4c hat ein anderes Exzentermaß. In Flussrichtung 11 gesehen nimmt mit jeder weiteren Exzenterscheibe 30 das Exzentermaß zu, sodass es bei einer Drehung der Exzenterscheiben 30 um für alle Exzenterscheiben 30 gleiche Winkel zu einheitlichen zweiten Spaltweiten 27 kommt.Each of the four successive eccentric discs 30 in the illustrations of Figures 2 and 4a to 4c has another eccentric measure. Viewed in the flow direction 11 increases with each additional eccentric disc 30, the eccentric, so that it is at a rotation of the eccentric discs 30 for all eccentric discs 30 same angle to uniform second gap widths 27 comes.

Eine Folge des sich in Flussrichtung 11 vergrößernden Exzentermaßes ist, dass das jeweilige bewegbare Drehzentrum 28 in Flussrichtung 11 gesehen immer weiter zum Rand der jeweiligen Exzenterscheibe 30 hin angeordnet ist. Somit sind hintere Wellen 24 des zweiten Abschnittes 26 je nach Position der Exzenterscheiben 30 gegenüber der Horizontalen immer weiter angehoben.One consequence of the eccentric dimension increasing in the flow direction 11 is that the respective movable center of rotation 28, as viewed in the direction of flow 11, is arranged ever further towards the edge of the respective eccentric disk 30. Thus, rear shafts 24 of the second portion 26 are always raised depending on the position of the eccentric discs 30 relative to the horizontal.

Um einen derartigen Anstieg der Wellen 24 des zweiten Abschnittes 26 zu vermeiden könnte alternativ (nicht dargestellt) auch das jeweilige Zentrum der Exzenterscheibe 30 um ein entsprechendes Maß gegenüber der Horizontalen nach unten versetzt drehbar in der jeweiligen Seitenwand gelagert werden. Dann bliebe in einer Stellung der Exzenterscheiben 30 eine ebene Fläche auf den Wellen 14, 24 der Rollenrost-Siebvorrichtung 10 erreichbar.In order to avoid such an increase of the shafts 24 of the second section 26, alternatively (not shown) the respective center of the eccentric disk 30 could be mounted rotatably in the respective side wall offset by a corresponding amount with respect to the horizontal. Then, in a position of the eccentric discs 30, a flat surface on the shafts 14, 24 of the roller grate screening device 10 would be achievable.

Der Aufbau der Exzenterscheibe 30 ist besonders in Fig. 3 gut zu erkennen. Radial außen ist die Exzenterscheibe 30 in einem Lagergehäuse 36 des Rahmens 12 drehbar gelagert. Exzentrisch aufgenommen ist in einem radial inneren Bereich der Exzenterscheibe 30 ein Pendelrollenlager 37. Axial der jeweiligen Welle 24 abgewandt ist das Pendelrollenlager 37 mit einem Deckel verschlossen, wobei einstückig mit dem Deckel ein Verstellarm 34 in radialer Richtung abstehend ausgeführt ist. Axial der jeweiligen bewegbaren Welle 24 zugewandt ist das Pendelrollenlager 37 mit einem Abstreiferdeckel 38 unter üblichem Zusammenwirken mit einem Exzenterabstreifer 39 gegen die Exzenterscheibe 30 befestigt.The structure of the eccentric disc 30 is particularly in Fig. 3 clearly visible. Radially outside the eccentric disc 30 is rotatably mounted in a bearing housing 36 of the frame 12. A spherical roller bearing 37 is accommodated eccentrically in a radially inner region of the eccentric disk 30. Axially remote from the respective shaft 24, the spherical roller bearing 37 is closed by a cover, wherein an adjusting arm 34 is designed to project in the radial direction in one piece with the cover. Axially facing the respective movable shaft 24, the spherical roller bearing 37 is fastened with a wiper cover 38 under customary cooperation with an eccentric wiper 39 against the eccentric disk 30.

Den Figuren 4a bis 4c kann entnommen werden, wie sich beim Wechsel von einer Offenstellung (Fig. 4a) über eine Mittelstellung (Fig. 4b) in eine Geschlossenstellung (4c) die zweite Spaltweite 27a, 27b, 27c verändert.The FIGS. 4a to 4c it can be seen how when changing from an open position ( Fig. 4a ) about a middle position ( Fig. 4b ) in a closed position (4c), the second gap width 27a, 27b, 27c changed.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1010
Rollenrost-SiebvorrichtungRollenrost-screening device
1111
Flussrichtungflow direction
1212
Rahmenframe
1313
Aufgabeseitetask page
1414
Wellewave
1616
erster Abschnittfirst section
1717
erste Spaltweitefirst gap width
1818
feststehendes Drehzentrumfixed turning center
2424
bewegbare Wellemovable shaft
2626
zweiter Abschnittsecond part
2727
zweite Spaltweitesecond gap width
27a27a
zweite Spaltweitesecond gap width
27b27b
zweite Spaltweitesecond gap width
27c27c
zweite Spaltweitesecond gap width
2828
bewegbares Drehzentrummovable turning center
3030
Exzenterscheibeeccentric
3131
Verstelleinrichtungadjustment
3232
Hydraulikzylinderhydraulic cylinders
3333
Stangepole
3434
Verstellarmadjusting arm
3535
Antriebdrive
3636
Lagergehäusebearing housing
3737
EndrollenlagerEndrollenlager
3838
Abstreiferdeckelwiper cover
3939
ExzenterabstreiferExzenterabstreifer

Claims (4)

  1. A roller-screen sifting apparatus (10) for the sifting of material, comprising a plurality of shafts (14, 24) which are arranged parallel to one another and are mounted in a rotatable manner in a frame (12) and are capable of being driven, wherein a first gap width (17) between the shafts (14) is not variable in a first portion (16) as viewed in a flow direction (11) [of] the material, wherein a mounting of the respective shaft of the first portion has a centre of rotation which is fixed with respect to the frame (12) and wherein a second gap width (27, 27a, 27b, 27c) between movable shafts (24) is variable in a second portion (26) as viewed in the flow direction (11), wherein mountings of the movable shafts (24) arranged in the second portion (26) have in each case a centre of rotation (28) which is movable on a curve portion with respect to the frame (12),
    characterized in that the frame (12) in the second portion (26) has eccentric discs (30) on both sides of the movable shafts (24), the eccentric discs (30) being mounted in the frame (12) in a rotatable manner with their axes aligned parallel to the movable shafts (24) in the centre of the eccentric discs (30), and the movable shafts (24) are mounted eccentrically in the eccentric discs (30) so that the respective movable centre of rotation (28) of the mountings of the movable shafts (24) is guided on a circular portion by means of the eccentric discs (30), and the eccentric discs (30) arranged in succession in the flow direction (11) have different degrees of eccentricity, wherein distances between the centres of adjacent eccentric discs (30) are the same.
  2. A roller-screen sifting apparatus (10) according to claim 1, characterized in that the respective degree of eccentricity of the eccentric discs (30) increases by an equal amount for each eccentric disc (30) following the flow direction (11), so as to result in a second gap width (27, 27a, 27b, 27c) which is equal between each of the shafts (24) in the second portion (26).
  3. A roller-screen sifting apparatus (10) according to one of the preceding claims, characterized in that the movement of the centres of rotation (28) on the curved portion is capable of being produced by a single displacement element, in particular an hydraulic cylinder (32), capable of being coupled mechanically.
  4. A roller-screen sifting apparatus (10) according to claim 3, characterized in that the displacement element is capable of being secured by way of an electro-hydraulic locking system.
EP20110003153 2011-04-14 2011-04-14 Roller screen separating device Active EP2511014B1 (en)

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EP20110003153 EP2511014B1 (en) 2011-04-14 2011-04-14 Roller screen separating device

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN112221931A (en) * 2020-09-24 2021-01-15 江苏绿博生物科技有限公司 Beating and sorting all-in-one machine adopting rotary drum screen

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ITBO20130152A1 (en) 2013-04-08 2014-10-09 Simex Srl MATERIAL SCREENING DEVICE SUCH AS EXAMPLE OF INERT MATERIALS AND SCREENING BUCKET EQUIPPED WITH SUCH A DEVICE
DE102015104719A1 (en) 2015-03-27 2016-09-29 Halbach & Braun Industrieanlagen Gmbh & Co. screening
CN108295954A (en) * 2018-04-11 2018-07-20 河南省振源科技有限公司 Multistage screening with constant bed thickness crusher
DE102023101553A1 (en) 2023-01-23 2024-07-25 Flsmidth A/S Roller grate system and method for adjusting gap spacing of a roller grate system
WO2024157162A1 (en) 2023-01-23 2024-08-02 Flsmidth A/S Roller grate system and method for adjusting gap distances of a roller grate system
BE1031282B1 (en) 2023-01-23 2024-08-19 Flsmidth As Roller grate system and method for adjusting gap spacing of a roller grate system

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DE598306C (en) * 1934-06-08 Buckau R Wolf Akt Ges Maschf Roller grate consisting of several rollers arranged one behind the other for sieving loose material
DE520370C (en) 1927-05-11 1931-03-10 Westfaelische Maschb Ges M B H Roller grate with adjustable gap widths
DE623072C (en) * 1933-06-30 1935-12-12 Fried Krupp Grusonwerk Akt Ges Cleaning device for disk roller grates
FI97527C (en) * 1995-02-15 1997-01-10 Sunds Defibrator Loviisa Oy Method and apparatus for removing impurities from powdered or combustible material, in particular chip or fibrous material
FI965255A (en) * 1996-12-30 1998-07-01 Outokumpu Oy A roller screen
DE10142436B4 (en) * 2001-08-31 2004-06-03 Franz Grimme Landmaschinenfabrik Gmbh & Co Kg Harvester for root crops, especially potatoes
DE102007042518B4 (en) * 2007-09-07 2010-06-10 Vma Maschinen- & Anlagenbau Gmbh Eccentric sieve element for disc sieves and disc sieve

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Publication number Priority date Publication date Assignee Title
CN112221931A (en) * 2020-09-24 2021-01-15 江苏绿博生物科技有限公司 Beating and sorting all-in-one machine adopting rotary drum screen

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