EP0410102A2 - Straining apparatus - Google Patents

Straining apparatus Download PDF

Info

Publication number
EP0410102A2
EP0410102A2 EP90109711A EP90109711A EP0410102A2 EP 0410102 A2 EP0410102 A2 EP 0410102A2 EP 90109711 A EP90109711 A EP 90109711A EP 90109711 A EP90109711 A EP 90109711A EP 0410102 A2 EP0410102 A2 EP 0410102A2
Authority
EP
European Patent Office
Prior art keywords
rotor
max
screen basket
arcs
distance
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.)
Granted
Application number
EP90109711A
Other languages
German (de)
French (fr)
Other versions
EP0410102B1 (en
EP0410102A3 (en
Inventor
Peter Schweiss
Reimund Rienecker
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.)
JM Voith GmbH
Original Assignee
JM Voith 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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0410102A2 publication Critical patent/EP0410102A2/en
Publication of EP0410102A3 publication Critical patent/EP0410102A3/en
Application granted granted Critical
Publication of EP0410102B1 publication Critical patent/EP0410102B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B07B1/18—Drum screens
    • B07B1/20—Stationary drums with moving interior agitators
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils

Definitions

  • the invention relates to a sorter according to the preamble of patent claim 1.
  • Sorters with such sieve baskets essentially have the task of to remove light, floating impurities, such as plastic films and the like, heavy components, such as sand, broken glass, pieces of wood and iron parts of an essentially small type, such as paper clips, pieces of wire and the like. This takes place in that, by suitable dimensioning of the screen perforation or the slot width of the screen or screen basket, only the good fibers or also fiber bundles get into an accept material space.
  • the object of the invention is to provide a rotor which, with good sorting efficiency, causes only slight strain on the screen basket.
  • the screen basket is designated 1 and the rotor 2.
  • the suspension is fed into the housing 3 via the inlet connection 5, the sorted-out waste material is discharged from the waste-material space 6 through outlet connection 8 and the remainder of the suspension is removed via connecting piece 9.
  • the rotor drive is indicated at 12, which drives the rotor via the shaft 11 outlined.
  • the circumference of the rotor 2 is composed in cross section, that is to say in sections perpendicular to the rotor axis or rotor shaft 11, of circular arcs with the radius R r1 , which are connected to one another here by a straight connecting piece.
  • a value in the range between 15 and 45 mm should preferably be selected for the value f min .
  • the eccentricity E is preferably between 4 and 10 mm.
  • Such a rotor according to the invention can attain a maximum rotational speed of 1400 rpm with a sieve diameter of 500 mm, which corresponds to a peripheral speed of approximately 35 m / s. There is a good sorting effect with a low power consumption of the rotor.
  • the strainer strain is relatively small.
  • FIG. 3 shows the cross section of a rotor according to the invention, the circumference of which is composed essentially of three circular arcs spaced apart at equal angular intervals.
  • rotors with two to four circular arcs forming the circumference of the rotor. Of course, this depends on the size of the sorter or the diameter of the screen basket.
  • the rotor is characterized by a flat undulating surface with respect to a fixed reference point, which is moved past the screen basket at high speed or speed.
  • f max is the theoretical maximum distance of the common tangent of neighboring arcs; in this area, i.e. at the point of half the angular distance of the points with the smallest rotor distance, the actual distance f max may be about 15% greater, for example, where the rotor surface is designed to correspond to a common secant.
  • Arc-shaped, concave connecting pieces between the circular arcs (cylinder sections) and an overall approximation by an ellipse (for the rotor with two circular arches or cylinder sections) are also possible, with a deviation from the theoretical circular radius R r of at most 10%.
  • the actual maximum distance of the rotor surface from the screen basket 1 should be at most 1.15f max - i.e. 1.15 times the theoretical maximum distance f max if the rotor contour consists of arcs and common tangents of adjacent arcs (or cylinder sections and tangential, flat planes) connecting them Areas) is formed, - preferably (1 + 0.2 / n) ⁇ f max .
  • the base radius R r1 - for a screen basket or sorter with minimal dimensions - is approximately 250 - 270 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Cyclones (AREA)
  • Cell Separators (AREA)
  • Optical Communication System (AREA)
  • Noodles (AREA)
  • Eye Examination Apparatus (AREA)
  • Filtration Of Liquid (AREA)
  • Water Treatment By Sorption (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Centrifugal Separators (AREA)

Abstract

The rotor of a sorter has a circumference which, in cross section perpendicular to the rotor axis of rotation, is essentially composed of circular arcs. Depending on sorter size, the number of circular arcs amounts to between two and eight. The eccentricity of the circular arcs relative to their center, based on the rotor axis of rotation, amounts to preferably between 4 and 10 mm. This makes it possible to obtain slight rotor stresses at a good sorting efficacy, preferably also with a mean substance density of more than 3% of fiber suspensions. The difference between the smallest and greatest rotor spacing e=fmax-fmin amounts to maximally 60 mm, preferably 20 mm.

Description

Die Erfindung betrifft einen Sortierer entsprechend dem Oberbe­griff des Patentanspruchs 1.The invention relates to a sorter according to the preamble of patent claim 1.

Sortierer mit solchen Siebkörben haben im wesentlichen die Auf­gabe, störende Bestandteile von Fasersuspensionen, wie z.B. leichte, aufschwimmende Verunreinigungen, wie Kunststoff-Folien u.ä., schwere Bestandteile, wie Sand, Glassplitter, Holzstücke und Eisenteile im wesentlichen kleiner Art, wie Büroklammern, Drahtstücke u.ä., zu entfernen. Dies erfolgt dadurch, daß durch eine geeignete Bemessung der Sieblochung bzw. der Schlitzweite des Siebes bzw. Siebkorbes möglichst nur die guten Fasern oder auch Faserbündel in einen Gutstoffraum gelangen.Sorters with such sieve baskets essentially have the task of to remove light, floating impurities, such as plastic films and the like, heavy components, such as sand, broken glass, pieces of wood and iron parts of an essentially small type, such as paper clips, pieces of wire and the like. This takes place in that, by suitable dimensioning of the screen perforation or the slot width of the screen or screen basket, only the good fibers or also fiber bundles get into an accept material space.

Für einen guten Sortierwirkungsgrad sind folgende Bedingungen dabei noch zu erfüllen:

  • 1. Es muß zu einer Erzeugung von Scherkräften und Aufrechter­haltung einer turbulenten Bewegung in der Suspension kom­men, um die Bildung von Faserflocken, insbesondere bei Feststoffkonzentrationen von mehr als 0,8 %, und eine Ent­mischung der Suspension in Fasern und Wasser am Sieb, zu verhindern. Im letzteren Fall würde es zu einer Eindickung am Sieb kommen, wodurch der Durchtritt von weiterem Gut­stoff durch die Sieböffnungen verhindert werden würde.
  • 2. Die Erzeugung von Druckpulsationen am Sieb, um auftretende Verstopfungen der Sieböffnungen durch z.B. Faserflocken und Fremdkörper zu beseitigen bzw. zu verhindern.
For a good sorting efficiency, the following conditions have to be fulfilled:
  • 1. Shear forces must be generated and turbulent movement in the suspension must be maintained in order to prevent the formation of fiber flakes, in particular at solids concentrations of more than 0.8%, and segregation of the suspension in fibers and water on the sieve . In the latter case, there would be a thickening on the sieve, which would prevent further accept material from passing through the sieve openings.
  • 2. The generation of pressure pulsations on the sieve in order to eliminate or prevent blockages in the sieve openings, for example by fiber flakes and foreign bodies.

Neuerdings wird versucht, bei möglichst hohen Stoffkonzentra­tionen den Sortiervorgang durchzuführen, so daß man neuartige Rotoren entwickelt hat, wofür ein Beispiel die Anordnung gemäß US-PS 42 005 537 ist. Solche Rotoren haben einen guten Sortier­wirkungsgrad, beanspruchen jedoch den Siebkorb ziemlich stark.Attempts have recently been made to carry out the sorting process at the highest possible substance concentrations, so that novel rotors have been developed, an example of which is the arrangement according to US Pat. No. 42,005,537. Such rotors have a good sorting efficiency, but put a considerable strain on the screen basket.

Die Aufgabe der Erfindung ist es, einen Rotor anzugeben, der bei gutem Sortierwirkungsgrad nur geringe Beanspruchungen des Siebkorbes hervorruft.The object of the invention is to provide a rotor which, with good sorting efficiency, causes only slight strain on the screen basket.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kenn­zeichnenden Teils des Patentanspruchs 1 gelöst.This object is achieved by the features of the characterizing part of patent claim 1.

Erfindungsgemäß ist erkannt worden, daß durch einen solchen Ro­tor relativ "sanfte" Pulsationen erzeugt werden, die in Form eines sanften Wellenzuges verlaufen.According to the invention, it has been recognized that such a rotor generates relatively "gentle" pulsations which run in the form of a gentle wave train.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen erläutert, wobei

  • Fig. 1 einen prinzipiellen Längsschnitt und
  • Fig. 2 einen Querschnitt dazu und
  • Fig. 3 einen weiteren Querschnitt einer anderen Ausfüh­rungsform
zeigen.The invention is explained below using exemplary embodiments, wherein
  • Fig. 1 shows a basic longitudinal section and
  • Fig. 2 shows a cross section and
  • Fig. 3 shows a further cross section of another embodiment
demonstrate.

Es ist in Fig. 1 der Siebkorb mit 1 und der Rotor mit 2 be­zeichnet. Die Zuführung der Suspension in das Gehäuse 3 erfolgt über den Zulaufstutzen 5, der Ablauf des aussortierten Gutstof­fes erfolgt aus dem Gutstoffraum 6 durch Ablaufstutzen 8 und die Entfernung des verbliebenen Restes der Suspension erfolgt über Stutzen 9. Der Rotorantrieb ist bei 12 angedeutet, der über die skizzierte Welle 11 den Rotor antreibt.1, the screen basket is designated 1 and the rotor 2. The suspension is fed into the housing 3 via the inlet connection 5, the sorted-out waste material is discharged from the waste-material space 6 through outlet connection 8 and the remainder of the suspension is removed via connecting piece 9. The rotor drive is indicated at 12, which drives the rotor via the shaft 11 outlined.

Gemäß Fig. 2 setzt sich der Umfang des Rotors 2 im Querschnitt, also in Schnitten senkrecht zur Rotorachse bzw. Rotorwelle 11 aus Kreisbögen mit dem Radius Rr1 zusammen, die hier durch ein gerades Verbindungsstück miteinander verbunden sind. Es ergibt sich dadurch eine Exzentrizität E des Mittelpunktes M₁ der Ro­torkreisbögen im Verhältnis zur Rotordrehachse M₀. In der Mitte der Kreisbögen ergibt sich in bezug auf den Siebkorb 1 ein minimaler Spalt von fmin und im halben Winkelbereich zwischen zwei benachbarten minimalen Spalten fmin findet sich der maximale Spalt fmax. Die Differenz zwischen diesen beiden Spalten ist mit e angegeben.According to FIG. 2, the circumference of the rotor 2 is composed in cross section, that is to say in sections perpendicular to the rotor axis or rotor shaft 11, of circular arcs with the radius R r1 , which are connected to one another here by a straight connecting piece. This results in an eccentricity E of the center M₁ of the circular arcs in relation to the rotor axis of rotation M₀. In the middle of the arcs there is a minimum gap of f min with respect to the screen basket 1 and in the half angle range between two adjacent minimum gaps f min there is the maximum gap f max . The difference between these two columns is indicated by e.

Der Ausgangsrotor für eine gewisse, kleine Sortierergröße ist ­wie dargestellt - mit zwei Kreisbögen ausgebildet, so daß n1=2 ist.The output rotor for a certain, small sorter size is designed as shown - with two arcs, so that n 1 = 2 .

Für größere Radien des Siebkorbes gilt dann die folgende Bezie­hung für die Anzahl (ganze Zahl) der Kreisbögen n = n₁·Rs/Rs1. Es gelten ferner die Beziehungen
Rr=Rs-fmin-e, wobei E=e (1-cos.a), e=fmax-fmin,
dabei ist der Winkel a der halbe Winkelabstand zwischen zwei benachbarten Punkten des Rotorumfangs mit dem geringsten Sieb­abstand fmin; an dieser Stelle liegt dann der maximale Abstand des Rotorumfanges zum Siebkorb 1 fmax. Für diesen Winkel a gilt dann a=360°/2n.For larger radii of the screen basket, the following relationship applies to the number (whole number) of arcs n = n 1 · R s / R s1 . The relationships also apply
R r = R s -f min -e, where E = e (1-cos.a), e = f max -f min ,
the angle a is half the angular distance between two adjacent points of the rotor circumference with the smallest sieve distance f min ; at this point the maximum distance between the rotor circumference and the screen basket is 1 f max . For this angle a then a = 360 ° / 2n.

Für den Wert fmin ist vorzugsweise ein Wert in dem Bereich zwi­schen 15 und 45 mm zu wählen. Die Exzentrizität E liegt vor­zugsweise zwischen 4 und 10 mm.A value in the range between 15 and 45 mm should preferably be selected for the value f min . The eccentricity E is preferably between 4 and 10 mm.

Ein solcher erfindungsgemäßer Rotor kann bei einem Siebdurch­messer von 500 mm maximal etwa eine Umdrehungsgeschwindigkeit von 1400 U/min erhalten, was einer Umfangsgeschwindigkeit von etwa 35 m/s entspricht. Es ergibt sich eine gute Sortierwirkung bei geringer Leistungsaufnahme des Rotors. Die Siebkorbbean­spruchungen sind dabei relativ klein.Such a rotor according to the invention can attain a maximum rotational speed of 1400 rpm with a sieve diameter of 500 mm, which corresponds to a peripheral speed of approximately 35 m / s. There is a good sorting effect with a low power consumption of the rotor. The strainer strain is relatively small.

In Fig. 3 ist noch der Querschnitt eines erfindungsgemäßen Ro­tors dargestellt, dessen Umfang sich im wesentlichen aus drei mit gleichen Winkelabständen zueinander beabstandeten Kreisbö­gen zusammensetzt.3 shows the cross section of a rotor according to the invention, the circumference of which is composed essentially of three circular arcs spaced apart at equal angular intervals.

Man kann auch - wie ausgezogen dargestellt - die Kreisbögen durch gerade Linien verbinden, die vorzugsweise parallel zur gemeinsamen Tangente benachbarter Kreisbögen verlaufen.You can also - as shown in solid lines - connect the arcs by straight lines, which preferably run parallel to the common tangent of adjacent arcs.

Man hat insgesamt den Vorteil eines geringen Energieverbrauchs bei hoher Umfangsgeschwindigkeit, welche zur Fluidisierung von Stoffen mittlerer Stoffdichte bei mehr als 3 % gut geeignet ist.Overall, there is the advantage of low energy consumption at a high peripheral speed, which is well suited for the fluidization of substances of medium consistency at more than 3%.

Es werden vorzugsweise Rotoren mit zwei bis vier den Umfang des Rotors bildenden Kreisbögen eingesetzt. Dies richtet sich na­türlich nach der Größe des Sortierers bzw. dem Durchmesser des Siebkorbes.It is preferred to use rotors with two to four circular arcs forming the circumference of the rotor. Of course, this depends on the size of the sorter or the diameter of the screen basket.

Der Wert für e=fmax-fmin beträgt zwischen 5 und 20 mm. Damit zeichnet sich der Rotor durch eine hinsichtlich eines festen Bezugsortes flach ondulierende Oberfläche aus, die mit hoher Drehzahl bzw. Geschwindigkeit am Siebkorb vorbeibewegt wird. Dabei ist fmax der theoretische maximale Abstand der gemeinsa­men Tangente benachbarter Kreisbögen; in diesem Bereich, also an der Stelle des halben Winkelabstandes der Stellen mit dem geringsten Rotorabstand, kann der wirkliche Abstand fmax etwa höchstens 15 % größer sein, z.B. dort die Rotoroberfläche einer gemeinsamen Sekante entsprechend ausgebildet sind. Auch bogen­förmige, konkave Verbindungsstücke zwischen den Kreisbögen (Zy­linderabschnitten) und eine Annäherung insgesamt durch eine El­lipse (für den Rotor mit zwei Kreisbögen bzw. Zylinderab­schnitten) kommen in Frage, mit einer Abweichung vom theore­tischen Kreisradius Rr von höchstens 10 %.The value for e = f max -f min is between 5 and 20 mm. The rotor is characterized by a flat undulating surface with respect to a fixed reference point, which is moved past the screen basket at high speed or speed. Here f max is the theoretical maximum distance of the common tangent of neighboring arcs; in this area, i.e. at the point of half the angular distance of the points with the smallest rotor distance, the actual distance f max may be about 15% greater, for example, where the rotor surface is designed to correspond to a common secant. Arc-shaped, concave connecting pieces between the circular arcs (cylinder sections) and an overall approximation by an ellipse (for the rotor with two circular arches or cylinder sections) are also possible, with a deviation from the theoretical circular radius R r of at most 10%.

Der wirkliche maximale Abstand der Rotoroberfläche vom Siebkorb 1 soll höchstens 1,15·fmax - d.h. 1,15 mal dem theoretischen Maximalabstand fmax, wenn die Rotorkontur aus Kreisbögen und diese verbindenden, gemeinsamen Tangenten benachbarter Kreisbö­gen (bzw. Zylinderabschnitten und tangentialen, ebenen Flächen) gebildet ist, - vorzugsweise (1+0,2/n)·fmax betragen.The actual maximum distance of the rotor surface from the screen basket 1 should be at most 1.15f max - i.e. 1.15 times the theoretical maximum distance f max if the rotor contour consists of arcs and common tangents of adjacent arcs (or cylinder sections and tangential, flat planes) connecting them Areas) is formed, - preferably (1 + 0.2 / n) · f max .

Der Basisradius Rr1 - für einen Siebkorb oder Sortierer mit minimalen Abmessungen - beträgt etwa 250 - 270 mm.The base radius R r1 - for a screen basket or sorter with minimal dimensions - is approximately 250 - 270 mm.

Claims (3)

1. Sortierer mit rotationssymmetrischem Siebkorb und radial innen dazu angeordnetem, koaxialem Rotor, dadurch gekenn­zeichnet, daß der Rotorumfang in jedem Querschnitt senk­recht zur Rotordrehachse (M₀) überwiegend aus gegenseitig gleichmäßig winkelversetzten Kreisbögen von gleichem Radius (Rr), der kleiner als der Innenradius (Rs) des Siebkorbes (1) ist, gebildet ist, nach der Formel Rr=Rs-fmax, wobei fmin der geringste Abstand des Rotorumfangs vom Siebkorb (1) und fmax der theoretisch größte Abstand des Rotorum­fangs vom Siebkorb (1) als der Maximal-Abstand der gemein­samen Tangente benachbarter Kreisbögen vom Siebkorb (1) ist und in diesem Bereich f′max der wirkliche größte Abstand des Rotorumfanges vom Siebkorb ist, wenn er dort nicht nach der gemeinsamen Tagente verlaufend ausgebildet ist, und der höchstens gleich 1,15·fmax ist, wobei der Abstand zwischen fmin und f′max im wesentlichen stetig zunimmt und eine maximale Abweichung des Radius Rr von 5 % des Werts wie nach der Formel gegeben in Form einer elliptischen oder ähnlichen Rotorkontur, zulässig ist, und der Konturübergang zwischen den Kreisbögen als gemeinsame Tangente oder Sekan­te benachbarter Kreisbögen oder bogenförmig konkav ausge­bildet ist und daß weiter die Differenz e=fmax-fmin höch­stens 60 mm und fmin zwischen 15 und 45 mm und E zwischen 5 und 100 mm beträgt, wobei a=360°/2n, E=e/(1-cos a), wenn der Winkel a gleich dem halben Winkelabstand zweier in Ro­torumfangsrichtung benachbarter Rotorkonturpunkte mit dem geringsten Abstand fmin zum Siebkorb (1) und wenn E der Versatz des Mittelpunkts M der Rotorkreisbögen von der Ro­tordrehachse M₀ , e=fmax-fmin und n gleich der Zahl der Kreisbögen jedes Rotorquerschnitts ist.1. Sorter with a rotationally symmetrical strainer basket and a coaxial rotor arranged radially on the inside, characterized in that the rotor circumference in every cross section perpendicular to the rotor axis of rotation (M₀) predominantly consists of circular arcs of the same radius (R r ), which are mutually uniformly offset, smaller than the inner radius (R r ) R s ) of the screen basket (1) is formed according to the formula R r = R s -f max , where f min is the smallest distance between the rotor circumference and the screen basket (1) and f max is the theoretically largest distance between the rotor circumference and the screen basket ( 1) as the maximum distance of the common tangent of adjacent arcs from the screen basket (1) and in this area f ' max is the real greatest distance of the rotor circumference from the screen basket if it is not formed there according to the common tag, and the maximum is equal to 1.15 · f max , the distance between f min and f ′ max increasing substantially and a maximum deviation of the radius R r of 5% of the value as given by the formula in the form of an elliptical or similar rotor contour, is permissible, and the contour transition between the circular arcs is formed as a common tangent or secant of adjacent circular arcs or arc-shaped concave and that the difference e = f max -f min is at most 60 mm and f min between 15 and 45 mm and E between 5 and 100 mm, where a = 360 ° / 2n, E = e / (1-cos a), if the angle a is equal to half the angular distance between two adjacent rotor contour points in the circumferential direction of the rotor with the smallest distance f min to the screen basket (1) and if E is the offset of the center M of the arcs of the rotor arcs from the rotor axis of rotation M₀, e = f max -f min and n is the number of arcs of each rotor cross section. 2. Sortierer nach Anspruch 1, dadurch gekennzeichnet, daß der Wert für e=fmax-fmin zwischen 5 und 20 mm betragt.2. Sorter according to claim 1, characterized in that the value for e = f max -f min is between 5 and 20 mm. 3. Sortierer nach einem der Ansprüche 1 oder 2, dadurch ge­kennzeichnet, daß der wirkliche maximale Abstand der Rotor­oberfläche vom Siebkorb (1) f′max höchstens gleich (1+0,2/n)·fmax ist und wobei n₁=2 für einen minimal zu be­messenden Rotor entsprechend einer geringen Sortierergröße mit Rs1 gilt.3. Sorter according to one of claims 1 or 2, characterized in that the actual maximum distance of the rotor surface from the screen basket (1) f ' max is at most equal to (1 + 0.2 / n) · f max and where n₁ = 2 for a minimally dimensioned rotor corresponding to a small sorter size with R s1 applies.
EP90109711A 1989-07-28 1990-05-22 Straining apparatus Expired - Lifetime EP0410102B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925020A DE3925020A1 (en) 1989-07-28 1989-07-28 SORTER
DE3925020 1989-07-28

Publications (3)

Publication Number Publication Date
EP0410102A2 true EP0410102A2 (en) 1991-01-30
EP0410102A3 EP0410102A3 (en) 1991-07-31
EP0410102B1 EP0410102B1 (en) 1994-08-03

Family

ID=6386045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109711A Expired - Lifetime EP0410102B1 (en) 1989-07-28 1990-05-22 Straining apparatus

Country Status (11)

Country Link
US (1) US5045183A (en)
EP (1) EP0410102B1 (en)
JP (1) JPH0364591A (en)
KR (1) KR910002522A (en)
AT (1) ATE109530T1 (en)
BR (1) BR9003471A (en)
CA (1) CA2022164C (en)
DE (1) DE3925020A1 (en)
DK (1) DK0410102T3 (en)
ES (1) ES2057267T3 (en)
FI (1) FI93318C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123112A1 (en) * 1991-07-12 1993-01-21 Voith Gmbh J M PRINT SORTER
DE4133562A1 (en) * 1991-10-10 1993-04-22 Voith Gmbh J M ROLLER WITH BEND COMPENSATION
DE19911884A1 (en) * 1999-03-17 2000-09-21 Voith Sulzer Papiertech Patent Pressure sorter for screening a paper pulp suspension and screen clearer for one
DE102012013642B4 (en) * 2012-07-09 2020-12-24 Thermo Electron Led Gmbh Centrifuge tube unit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE129814C (en) *
DE290357C (en) *
US3400820A (en) * 1965-03-30 1968-09-10 Bird Machine Co Screening apparatus with rotary pulsing member
US3680696A (en) * 1970-03-23 1972-08-01 Bird Machine Co Screening
US3762401A (en) * 1972-01-05 1973-10-02 J Tupper Surgical retractor
FR2410081A1 (en) * 1977-11-23 1979-06-22 Lamort Ingenieurs Construc E E APPARATUS FOR PULPING PAPER PULP
FI67588C (en) * 1983-01-26 1985-04-10 Ahlstroem Oy SILPLAOT
US4855038A (en) * 1985-06-20 1989-08-08 Beloit Corporation High consistency pressure screen and method of separating accepts and rejects

Also Published As

Publication number Publication date
DK0410102T3 (en) 1994-08-29
DE3925020C2 (en) 1991-06-27
DE3925020A1 (en) 1991-01-31
CA2022164A1 (en) 1991-01-29
US5045183A (en) 1991-09-03
FI93318B (en) 1994-12-15
KR910002522A (en) 1991-02-25
BR9003471A (en) 1991-08-27
CA2022164C (en) 1996-10-22
FI93318C (en) 1995-03-27
EP0410102B1 (en) 1994-08-03
FI903781A0 (en) 1990-07-27
ATE109530T1 (en) 1994-08-15
JPH0364591A (en) 1991-03-19
ES2057267T3 (en) 1994-10-16
EP0410102A3 (en) 1991-07-31

Similar Documents

Publication Publication Date Title
DE2526657C3 (en) Pressure sifter for fiber suspensions
EP0034780B1 (en) Rotating sorter
DE3606447A1 (en) SCREEN DEVICE
DE69424661T2 (en) SCREENING DEVICE FOR PAPER-FREE
DE3617871A1 (en) DEVICE FOR SCREENING CELLULAR OR. PAPER-FREE
DE2345148A1 (en) METHOD AND APPARATUS FOR SORTING PAPER FIBER
DE2440393A1 (en) METHOD AND APPARATUS FOR RECYCLING PAPER FIBERS FROM MATERIALS CONTAINING WASTE PAPER
DE3820365A1 (en) DEVICE FOR DIVIDING A CELLULOSE FIBER WIDE SUSPENSION
DE2611886C3 (en) Device for sorting and deflaking of fiber suspensions
DE3644529C2 (en) Device for eliminating contaminants such as trash, shell parts and. Like. For a card or card
DE69314034T2 (en) SCREENING DEVICE FOR FIBER-FREE
EP0410102B1 (en) Straining apparatus
EP0235605B1 (en) Screening apparatus for paper pulp
EP0008395B1 (en) Apparatus for separating liquids from suspensions
DE60105359T3 (en) Sorting apparatus for a fiber suspension
EP1036879A1 (en) Pressure screen for fibre suspensions and a cleaning rotor for such a screen
AT395325B (en) DEVICE FOR SEPARATING A CELLULOSE-FIBER-MIXED SUSPENSION
DE2453199A1 (en) FIBERIZING DEVICE
EP0824107A2 (en) Cellulose particles
AT514845B1 (en) Rotor element and rotor for a screening device
DE2930475A1 (en) SITTER FOR CLEANING SUSPENSIONS.
DE3340858A1 (en) Process and device for defibrating pretreated waste paper
AT396695B (en) SORTING DEVICE FOR FIBER SUSPENSIONS
DE2854789A1 (en) DEVICE FOR SEPARATING IMPURITIES FROM A PULP
DE3015370C2 (en) Screen basket for sorters in the paper industry

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DK ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19901222

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DK ES FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19930511

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DK ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 109530

Country of ref document: AT

Date of ref document: 19940815

Kind code of ref document: T

ITF It: translation for a ep patent filed
ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2057267

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941019

EAL Se: european patent in force in sweden

Ref document number: 90109711.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950505

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19950510

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950531

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950613

Year of fee payment: 6

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Effective date: 19960522

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960531

Ref country code: CH

Effective date: 19960531

Ref country code: BE

Effective date: 19960531

BERE Be: lapsed

Owner name: J.M. VOITH G.M.B.H.

Effective date: 19960531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19961201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19961201

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970418

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970423

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970516

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19970520

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970527

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980522

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980523

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19980523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980531

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980522

EUG Se: european patent has lapsed

Ref document number: 90109711.3

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050522