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EP2196081B1 - Sieve - Google Patents

Sieve Download PDF

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Publication number
EP2196081B1
EP2196081B1 EP09450233A EP09450233A EP2196081B1 EP 2196081 B1 EP2196081 B1 EP 2196081B1 EP 09450233 A EP09450233 A EP 09450233A EP 09450233 A EP09450233 A EP 09450233A EP 2196081 B1 EP2196081 B1 EP 2196081B1
Authority
EP
European Patent Office
Prior art keywords
profiles
screen
sieve
webs
bars
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.)
Not-in-force
Application number
EP09450233A
Other languages
German (de)
French (fr)
Other versions
EP2196081A1 (en
Inventor
Christian Karl
Herbert Dallhammer
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.)
IFE Aufbereitungstechnik GmbH
Original Assignee
IFE Aufbereitungstechnik GmbH
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 IFE Aufbereitungstechnik GmbH filed Critical IFE Aufbereitungstechnik GmbH
Priority to PL09450233T priority Critical patent/PL2196081T3/en
Publication of EP2196081A1 publication Critical patent/EP2196081A1/en
Application granted granted Critical
Publication of EP2196081B1 publication Critical patent/EP2196081B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4681—Meshes of intersecting, non-woven, elements

Definitions

  • the invention relates to a screen, comprising at least webs whose web surfaces are normal to the screen surface, and profiles. Their profile surfaces preferably extend at least partially parallel to the screen surface.
  • Such screens in which the webs and the profiles mostly made of metal strips, preferably made of steel strips, are made in the prior art so that both in the webs and in the profiles incisions are incorporated in each case from one side, in which the each other elements are inserted, similar to cover grids of manholes or other openings.
  • the intersecting elements are connected by welding points at the joints.
  • the size of the available welding head determines the smallest possible sieve opening, since the welding spots can not be provided on one of the two sieve surfaces, but in the not very high, but because of the mesh size difficult to access, middle area of the sieve.
  • the angle of sections or parts of the profiles to the screen surface can also be 90 °, so that the profiles and the webs form rectangular cuboids. As far as possible minimum mesh size rectangles are to be mentioned with about 33 mm box length.
  • the US 4,004,404 A discloses a screen with a cylindrical surface, consisting of at least two rows of screen bars, which extend in the planes normal to Siebachse and form by their curvature two screen surfaces.
  • the bars are made of wire with a circular cross-section and are inserted into circular holes of columns.
  • a modification of such screens in which the screen surface forms a cylinder jacket is from the EP 1 163 835 A as a separator for combine harvester known.
  • rake-like, angled structures are mounted in the direction of the generatrix of the cylinder jacket between cheeks and through it patch, suitably cranked curved rods, which extend in the circumferential direction of the cylinder jacket, a support surface for the overlying material layer is formed.
  • This construction is suitable for the separation of straws, etc., but not for bulkier goods.
  • the invention has the object to provide a sieve of the aforementioned construction with such smaller sieve openings available.
  • screen surface so that not only the surface formed by the uppermost points of the webs and / or profiles, which may be flat, but possibly also cylindrically curved, is meant, but all parallel surfaces, there the term in the description and the claims serves only as a reference to indicate the position and orientation of the webs or profiles. It could also be used the area, which is defined by the centers of gravity of the individual webs and profiles, and which runs parallel to the surface according to the first definition in a technically sufficient extent. In the knowledge of the invention, it is easy for the skilled person to set the screen area for each design case in the most favorable manner.
  • Fig. 1 and 2 how from the cohesion of Fig. 1 and 2 it can be seen, in a frame consisting of modified webs and profiles, the webs and profiles actually forming the screen are put together.
  • the profiles 3 are substantially normal to the longitudinal extent of the webs, thus normal to the representation plane.
  • the plane of the sieve is defined by this structure can be considered either as the "top" level 10 or as a parallel plane passing, for example, in the middle of the height of the screen, for the invention, this does not matter.
  • the web surfaces are normal to the screen plane; the longitudinal axes of the webs are parallel to the screen surface.
  • the structure of the screen 1 is now essentially the following: In two frame parts 4 and 5, which are normal to S direction and thus form the front and rear boundary of the screen 1, recesses 6, 6 'are provided, in which the various mechanical reasons slightly different from each other having dimension, but in their entirety each with 2 or 2 'designated webs are inserted. At the left and at the right end of the screen side parts 7 are connected to the frame parts 4 and 5. Thus, all webs 2, 2 'in place and the frame of the screen 1 is complete.
  • These recesses should absorb the profiles play as possible to improve the mechanical stability, which is achieved in that the recesses correspond to the outline or cross section of the profiles in shape and size. Then the profiles 3 are welded to the two side parts 7 from the outside and fixed so.
  • the screen lining receives a seal of the numerous, albeit small, gaps resulting from the plug-in system, and thus also prevents the hanging of various materials such as wires , Threads, ribbons and the like.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Description

Die Erfindung betrifft ein Sieb, aufweisend zumindest Stege, deren Stegflächen normal zur Siebfläche verlaufen, sowie Profile. Deren Profilflächen verlaufen bevorzugt zumindest teilweise parallel zur Siebfläche.The invention relates to a screen, comprising at least webs whose web surfaces are normal to the screen surface, and profiles. Their profile surfaces preferably extend at least partially parallel to the screen surface.

Derartige Siebe, bei denen die Stege und die Profile zumeist aus Metallstreifen, bevorzugt aus Stahlstreifen, bestehen, werden im Stand der Technik so hergestellt, dass sowohl in die Stege als auch in die Profile jeweils von einer Seite her Einschnitte eingearbeitet werden, in die die jeweils anderen Elemente eingesteckt werden, ähnlich zu Abdeckgittern von Schächten oder anderen Öffnungen. Nach dem Ineinanderstecken aller Bestandteile, zumeist innerhalb eines Rahmens, werden an den Verbindungsstellen die einander dort kreuzenden Elemente durch Schweißpunkte miteinander verbunden. Die Größe des zur Verfügung stehenden Schweißkopfes legt dabei die kleinste mögliche Sieböffnung fest, da ja die Schweißpunkte nicht an einer der beiden Sieboberflächen vorgesehen sein können, sondern im zwar nicht sehr hohen, aber wegen der Maschenweite doch schlecht zugänglichen, mittleren Bereich des Siebes. Der Winkel von Abschnitten bzw. Teilen der Profile zur Siebfläche kann dabei auch 90° sein, sodass die Profile und die Stege rechteckige Quader ausbilden. Als bisher minimal mögliche Maschenweite sind Vierecke mit etwa 33 mm Kastenlänge zu nennen.Such screens, in which the webs and the profiles mostly made of metal strips, preferably made of steel strips, are made in the prior art so that both in the webs and in the profiles incisions are incorporated in each case from one side, in which the each other elements are inserted, similar to cover grids of manholes or other openings. After nesting of all components, usually within a frame, the intersecting elements are connected by welding points at the joints. The size of the available welding head determines the smallest possible sieve opening, since the welding spots can not be provided on one of the two sieve surfaces, but in the not very high, but because of the mesh size difficult to access, middle area of the sieve. The angle of sections or parts of the profiles to the screen surface can also be 90 °, so that the profiles and the webs form rectangular cuboids. As far as possible minimum mesh size rectangles are to be mentioned with about 33 mm box length.

Die US 4,004,404 A offenbart ein Sieb mit zylindrischer Oberfläche, bestehend aus zumindest zwei Reihen von Siebstäben, die in den Ebenen normal zur Siebachse verlaufen und durch ihre Krümmung zwei Siebflächen bilden. Die Siebstäbe bestehen aus Draht mit kreisrundem Querschnitt und werden in kreisrunde Löcher von Stützen eingeschoben.The US 4,004,404 A discloses a screen with a cylindrical surface, consisting of at least two rows of screen bars, which extend in the planes normal to Siebachse and form by their curvature two screen surfaces. The bars are made of wire with a circular cross-section and are inserted into circular holes of columns.

Eine Abwandlung derartiger Siebe, bei der die Siebfläche einen Zylindermantel ausbildet, ist aus der EP 1 163 835 A als Abscheidevorrichtung für Mähdrescher bekannt. Dabei werden rechenartige, abgewinkelte Gebilde in Richtung der Erzeugenden des Zylindermantels zwischen Wangen montiert und durch darauf aufgesetzte, passend gekröpft gebogene Rundstäbe, die in Umfangsrichtung des Zylindermantels verlaufen, wird eine Stützfläche für die darauf liegende Gutschicht gebildet. Diese Konstruktion ist für die Abtrennung von Halmen etc. geeignet, nicht aber für massiveres Gut. Es gibt bei den gattungsgemäßen Sieben selbstverständlich für kleinere benötigte Sieböffnungen eine Vielzahl anderer Siebbeläge, doch ist aus verschiedenen Gründen, insbesondere in der Aufbereitung von Altmaterial, die Verwendung derartiger Siebe, bestehend aus Stegen und Profilen, gewünscht und es ist bei der Behandlung von Altmaterial nach den verschiedenen Grobtrennungen und dergleichen, auch gewünscht, derartige Siebe mit kleineren Sieböffnungen als den bisher minimal möglichen etwa 33 mm zur Verfügung zu haben.A modification of such screens in which the screen surface forms a cylinder jacket, is from the EP 1 163 835 A as a separator for combine harvester known. In this case, rake-like, angled structures are mounted in the direction of the generatrix of the cylinder jacket between cheeks and through it patch, suitably cranked curved rods, which extend in the circumferential direction of the cylinder jacket, a support surface for the overlying material layer is formed. This construction is suitable for the separation of straws, etc., but not for bulkier goods. There are of course in the generic screens for smaller screen openings required a variety of other screen coverings, but is for various reasons, especially in the treatment of waste, the use of such screens, consisting of webs and profiles, desired and it is in the treatment of Old material after the various coarse separations and the like, also desired to have such screens with smaller screen openings than the previously possible minimum of about 33 mm available.

Die Erfindung hat die Aufgabe, ein Sieb des eingangs genannten Aufbaus mit solchen kleineren Sieböffnungen zur Verfügung zu stellen.The invention has the object to provide a sieve of the aforementioned construction with such smaller sieve openings available.

Erfindungsgemäß werden diese Ziele durch ein sieb mit den Merkmalen nach Anspruch 1 erreicht.According to the invention, these objects are achieved by a sieve having the features of claim 1.

Es soll zum Begriff "Siebfläche" ausgeführt werden, dass damit nicht nur die von den obersten Stellen der Stege und/oder Profile gebildete Fläche, die zumeist eben, gegebenenfalls aber auch zylindrisch gekrümmt sein kann, gemeint ist, sondern alle damit parallelen Flächen, da der Begriff in der Beschreibung und den Ansprüchen nur als Referenz dient, um die Lage und Orientierung der Stege bzw. Profile anzugeben. Es könnte auch die Fläche herangezogen werden, die durch die Schwerpunkte der einzelnen Stege und Profile definiert wird, und die zur Fläche gemäß der ersten Definition in technisch ausreichendem Maß parallel verläuft. In Kenntnis der Erfindung ist es für den Fachmann ein Leichtes, für jeden Konstruktionsfall die Siebfläche auf günstigste Weise festzulegen.It should be made to the term "screen surface", so that not only the surface formed by the uppermost points of the webs and / or profiles, which may be flat, but possibly also cylindrically curved, is meant, but all parallel surfaces, there the term in the description and the claims serves only as a reference to indicate the position and orientation of the webs or profiles. It could also be used the area, which is defined by the centers of gravity of the individual webs and profiles, and which runs parallel to the surface according to the first definition in a technically sufficient extent. In the knowledge of the invention, it is easy for the skilled person to set the screen area for each design case in the most favorable manner.

Die Ausbildung der Ausnehmungen im Inneren der Fläche der Stege und die damit verbundene Verwendung von Profilen ohne Schlitzen, die durch die Stege geschoben werden, führen zu einer wesentlichen Erhöhung der mechanischen Stabilität. Auf diese Weise entfällt die Notwendigkeit des Fixierens durch Schweißpunkte und es können Siebweiten von 12 mm und auch darunter erzielt werden.The formation of the recesses in the interior of the surface of the webs and the associated use of profiles without slots, which are pushed through the webs, lead to a substantial increase in the mechanical stability. In this way eliminates the need for fixing by welding points and it can be achieved screen widths of 12 mm and below.

Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Dabei zeigt bzw. zeigen

  • die Fig. 1 eine Draufsicht auf ein erfindungsgemäßes Sieb,
  • die Fig. 2 eine Seitenansicht in Richtung des Pfeils II,
  • die Fig. 3a bis 3c erfindungsgemäße Stege und
  • die Fig. 4a bis 4d Rahmenteile und Profile.
The invention will be explained in more detail below with reference to the drawing. It shows or show
  • the Fig. 1 a top view of a sieve according to the invention,
  • the Fig. 2 a side view in the direction of arrow II,
  • the Fig. 3a to 3c webs according to the invention and
  • the Fig. 4a to 4d Frame parts and profiles.

Wie aus dem Zusammenhalt der Fig. 1 und 2 ersichtlich ist, sind in einem Rahmen, der aus abgewandelten Stegen und Profilen besteht, die eigentlich das Sieb bildenden Stege und Profile zusammengesteckt. In Siebrichtung, in der Darstellung in Richtung des Pfeils S von rechts nach links verlaufen die Stege 2 des Siebes 1. Im Wesentlichen normal zur Längserstreckung der Stege, somit normal zur Darstellungsebene, verlaufen die Profile 3. Die Siebebene ist durch diesen Aufbau definiert, sie kann entweder als die "obere" Ebene 10 angesehen werden oder als dazu parallele Ebene, die beispielsweise in der Mitte der Höhe des Siebes verläuft, für die Erfindung spielt dies keine Rolle. Die Stegflächen verlaufen normal zur Siebebene; die Längsachsen der Stege verlaufen parallel zur Siebfläche.How from the cohesion of Fig. 1 and 2 it can be seen, in a frame consisting of modified webs and profiles, the webs and profiles actually forming the screen are put together. In the direction of the arrow S, from right to left in the direction of the arrow S, run the webs 2 of the screen 1. The profiles 3 are substantially normal to the longitudinal extent of the webs, thus normal to the representation plane. The plane of the sieve is defined by this structure can be considered either as the "top" level 10 or as a parallel plane passing, for example, in the middle of the height of the screen, for the invention, this does not matter. The web surfaces are normal to the screen plane; the longitudinal axes of the webs are parallel to the screen surface.

Der Aufbau des Siebes 1 ist nun im Wesentlichen der folgende: In zwei Rahmenteilen 4 und 5, die normal zu Siebrichtung S verlaufen und somit die vordere und hintere Begrenzung des Siebes 1 bilden, sind Ausnehmungen 6, 6' vorgesehen, in die die aus verschiedenen mechanischen Gründen leicht von einander abweichende Abmessung aufweisenden, aber in ihrer Gesamtheit jeweils mit 2 bzw. 2' bezeichneten Stege eingeschoben werden. Am linken und am rechten Ende des Siebes werden Seitenteile 7 mit den Rahmenteilen 4 und 5 verbunden. Damit sind alle Stege 2, 2' an ihrem Platz und auch der Rahmen des Siebes 1 ist vollständig.The structure of the screen 1 is now essentially the following: In two frame parts 4 and 5, which are normal to S direction and thus form the front and rear boundary of the screen 1, recesses 6, 6 'are provided, in which the various mechanical reasons slightly different from each other having dimension, but in their entirety each with 2 or 2 'designated webs are inserted. At the left and at the right end of the screen side parts 7 are connected to the frame parts 4 and 5. Thus, all webs 2, 2 'in place and the frame of the screen 1 is complete.

Nunmehr werden die einzelnen Profile 3, auch hier kann es aus Stabilitätsgründen zu leicht unterschiedlichen Ausbildungen kommen, von der Seite, in Richtung des Doppelpfeils 8, in schlitzförmige Ausnehmungen 9 der Stege 2 und der Seitenteile 7 geschoben, was durch die fluchtende Anordnung der Ausnehmungen 9 kein Problem darstellt. Diese Ausnehmungen sollen zur Verbesserung der mechanischen Stabilität die Profile möglichst spielfrei aufnehmen, was dadurch erreicht wird, dass die Ausnehmungen dem Umriss bzw. Querschnitt der Profile nach Form und Größe entsprechen. Sodann werden die Profile 3 mit den beiden Seitenteilen 7 von außen verschweißt und so fixiert.Now, the individual profiles 3, also here it may come for reasons of stability to slightly different configurations, pushed from the side, in the direction of the double arrow 8, in slot-shaped recesses 9 of the webs 2 and the side parts 7, which by the aligned arrangement of the recesses. 9 no problem. These recesses should absorb the profiles play as possible to improve the mechanical stability, which is achieved in that the recesses correspond to the outline or cross section of the profiles in shape and size. Then the profiles 3 are welded to the two side parts 7 from the outside and fixed so.

Da die Siebrichtung S in Richtung der Stege 2, 2' verläuft, ist die mechanische Beanspruchung der Stege 2 in Richtung der Profile 3 (Biegebeanspruchung) im Allgemeinen nur klein und führt zu keiner Beschädigung des Siebes. Dargestellt sind abgewinkelte Profile, die teilweise parallel zur Siebebene 10 verlaufen, teilweise im Winkel zu ihr. Die Ausnehmungen 9 sind entsprechend auszubilden, wichtig ist, das sie auch in diesen Fällen völlig innerhalb der Fläche der Stege 2, 2' liegen..Since the sieve direction S extends in the direction of the webs 2, 2 ', the mechanical stress of the webs 2 in the direction of the profiles 3 (bending stress) is generally only small and does not damage the screen. Shown are angled profiles, which are partially parallel to the screen plane 10, partially at an angle to it. The recesses 9 are to train accordingly, it is important that they are completely within the surface of the webs 2, 2 'in these cases ..

Durch Verzinken bzw. vergleichbare Tauchverfahren oder andere Auftragsverfahren, bei denen Kunststoff oder dergleichen flächig aufgebracht wird, erhält der Siebbelag eine Versiegelung der zahlreichen, wenn auch kleinen, Spalten, die sich aus dem Stecksystem ergeben, und verhindert somit auch das Hängenbleiben diverser Materialien wie Drähte, Fäden, Bändern und dergleichen. Dies bedeutet in der Praxis, dass die erfindungsgemäßen Siebe im Vergleich zu anderen Siebbelägen nur einen extrem geringen Reinigungsaufwand erfordern.By galvanizing or similar dipping method or other application methods in which plastic or the like is applied flat, the screen lining receives a seal of the numerous, albeit small, gaps resulting from the plug-in system, and thus also prevents the hanging of various materials such as wires , Threads, ribbons and the like. This means in practice that the screens according to the invention require only an extremely small amount of cleaning compared to other screen coverings.

Als Materialien für das Sieb und seine Beschichtung können alle im Stand der Technik bei derartigen Sieben üblichen Materialien verwendet werden, durch die erfindungsgemäßen Maßnahmen tritt diesbezüglich keine Änderung ein.As materials for the sieve and its coating, it is possible to use all materials customary in the state of the art in such sieves, and the measures according to the invention make no change in this regard.

Claims (3)

  1. Sieve consisting of bars (2, 2'), which extend normal to the sieve surface (10), and profiles (3), wherein the bars (2, 2') have apertures (9) which are enclosed on all sides and which correspond to the outline of the profiles (3) and that the profiles (3) are pushed through the apertures (9) of the bars (2, 2'), characterised in that at least some profiles (3) have a curved or bent cross-section.
  2. Sieve as claimed in claim 1, characterised in that a portion of the curved or bent cross-section of the individual profiles (3) extends at least approximately in parallel with the sieve surface (10).
  3. Sieve as claimed in claim 1, characterised in that it has been galvanized or coated with synthetic material after assembly.
EP09450233A 2008-12-12 2009-12-09 Sieve Not-in-force EP2196081B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09450233T PL2196081T3 (en) 2008-12-12 2009-12-09 Sieve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0194108A AT506941B1 (en) 2008-12-12 2008-12-12 SCREE

Publications (2)

Publication Number Publication Date
EP2196081A1 EP2196081A1 (en) 2010-06-16
EP2196081B1 true EP2196081B1 (en) 2011-11-16

Family

ID=41480276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09450233A Not-in-force EP2196081B1 (en) 2008-12-12 2009-12-09 Sieve

Country Status (3)

Country Link
EP (1) EP2196081B1 (en)
AT (2) AT506941B1 (en)
PL (1) PL2196081T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509855B1 (en) * 2010-07-29 2011-12-15 Ife Aufbereitungstechnik Gmbh SCREE
AT511437B1 (en) * 2012-01-04 2012-12-15 Ife Aufbereitungstechnik Gmbh SCREE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004404A (en) 1976-03-01 1977-01-25 Sperry Rand Corporation Rotary combine with improved concave
US5394600A (en) * 1994-02-14 1995-03-07 Chen; Chao-Ho Method for making a screen
DE10028778A1 (en) 2000-06-15 2002-01-31 Claas Selbstfahr Erntemasch Separation device on combine harvesters

Also Published As

Publication number Publication date
PL2196081T3 (en) 2012-04-30
ATE533351T1 (en) 2011-12-15
AT506941A4 (en) 2010-01-15
AT506941B1 (en) 2010-01-15
EP2196081A1 (en) 2010-06-16

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