EP0541979B1 - Screening apparatus - Google Patents

Screening apparatus Download PDF

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Publication number
EP0541979B1
EP0541979B1 EP92117523A EP92117523A EP0541979B1 EP 0541979 B1 EP0541979 B1 EP 0541979B1 EP 92117523 A EP92117523 A EP 92117523A EP 92117523 A EP92117523 A EP 92117523A EP 0541979 B1 EP0541979 B1 EP 0541979B1
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EP
European Patent Office
Prior art keywords
housing
screening
baskets
basket
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92117523A
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German (de)
French (fr)
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EP0541979A1 (en
Inventor
Reimund Rienecker
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JM Voith GmbH
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JM Voith GmbH
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Publication of EP0541979A1 publication Critical patent/EP0541979A1/en
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Publication of EP0541979B1 publication Critical patent/EP0541979B1/en
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    • 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
    • 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 claim 1.
  • a sorter is known from EP 0 036 329.
  • This sorter has a central inflow arranged in the area between the upper and lower, respectively concentric screen baskets. The outflow is also provided in this area.
  • a problem with such screen sorters is the accessibility of the screen baskets for inspection purposes.
  • the axially outermost edge of the housing attachment part or the corresponding housing shell in the region of the housing part joint ends at most with a deviation of 20 mm with the corresponding axially outermost edge of the corresponding screen basket.
  • the inflow like the outflow, is provided on the main housing part, so that no additional pipes have to be dismantled.
  • the pipeline for the discharge of the rejects from the housing attachment part must be removed for inspection purposes of the screen baskets. This also applies to a ventilation line.
  • this housing part can be removed turn from the main part of the housing so that the strainer basket is freely accessible.
  • the holding devices located in the area of the housing cover wall can also be designed such that they serve as contact elements during the inspection.
  • FIG. 1 shows a horizontal arrangement of screen baskets and rotor with a vertical parting joint.
  • the housing attachment part 1 is fastened to a main housing part 2 and, like this, is formed with a truncated cone-shaped housing outer wall 8, in which the strainer basket can be mounted via support rings on the housing and sieve side.
  • Support ribs 30 of the housing attachment part are provided, to which a support ring 31 of the corresponding housing outer wall 8 is fastened.
  • the first strainer basket is clamped to the outer wall of the housing by means of a clamping ring 29.
  • the sieve baskets are slidably guided at their other ends by means of their end-side fastening rings there on the radial ring surfaces of rings 76 and 76 '.
  • the housing outer wall 9 of the housing main part 2 is also frustoconical in the area removed from the parting line of the two part housings 1 and 2 and has a cylinder part 9 'in its other area. Both the outflow for the accepted substance with outflow opening 26 and the inflow with inlet connection 19 are connected to this part passed through.
  • the inlet opening is numbered 16.
  • In this area in the vicinity of the cylindrical wall part of the outer wall 9 of the housing, there is a cylindrical partition wall 24 which separates the inflow space 23 from the accept material space by means of the tension ring 29 for the first strainer basket 3 and a corresponding tension ring for the other strainer basket 4 (see also support ring 31) .
  • the (here vertical) axially outermost housing edge of the housing outer wall 8 practically ends with the axially outermost edge 11 of the first strainer basket 3. Only a slight deviation of a maximum of 150 mm is recommended here, but practically much less. Because of the arrangement of the inflow and outflow, it is advisable to measure the deviation at most with 20 mm.
  • the connection of housing attachment part 1 and housing main part 2 is made by means of screws and flanges 32 and 38 a separate housing cover is unnecessary.
  • the housing part joint and the end face of the support ring 31 are in one plane, one can easily seal the inflow space 23 by appropriate machining of these faces and the partition wall 24.
  • the main housing part is supported on the foundation 41 by means of its support feet 44 and 45.
  • the housing attachment part on the main housing part, in which the rotor is also mounted, is thus fastened and carried by the latter.
  • the inflow space 24 feeds the suspension to the sieve space located between cylinder parts 21 and 22 of the rotor 5 and the respective sieve basket 3 and 4, respectively.
  • the sorting elements 7 of the rotor are provided in this screen space.
  • the rotor is held by a shaft 6 which is mounted in the main housing part 2 by means of ball or slide bearings via bearing parts 17 and 20 and a frustoconical bearing part 18.
  • the rotor shaft is driven here by a belt pulley 43.
  • the connection of the rotor 5 to the rotor shaft 6 takes place via the sleeve 39 by means of ribs 35 and 36 and a frustoconical intermediate part 34.
  • the arrangement is expediently such that the housing attachment part 1 is formed in one piece with the cover wall 56 of the sorter, the accept material space 37 being arranged radially outside and the rotor part (rotor parts) with the pulsation elements 7 being arranged radially inside the screen baskets 3, 4.
  • the outflows for the rejects are denoted by 13 and 10, respectively, with the outflow opening of the housing attachment part 1 being indicated at 14.
  • Holding devices 49 for the housing attachment part 1 are designed as ribs. Other supporting elements for transport elements are laterally projecting ribs 52 with holes 54. They also serve as feet. One can thereby turn the housing attachment part hanging on the hook by 90 °, so that the first strainer basket 3 is easily accessible in order to inspect it for inspection purposes and, if necessary, then also to be able to be easily removed.
  • Transport eyelets 55 and 58 are provided for the main housing part 2. Additional feet 60 can be provided in order to possibly facilitate the assembly of the screen basket 4 and also of the rotor or its storage by erecting this housing part.
  • Transport devices 55 ', 58' corresponding to the transport devices 51, 53 of FIG. 3 can also be provided instead of or in addition to the transport devices 55, 58.
  • the lower housing part 2 is supported by its lower support plate 33 on bearing columns 32 on the foundation 41.
  • Holding devices for the upper housing part 1 ' are located in a lower level and are designed as support cylinders 51 held on the housing by ribs 53.
  • the supporting elements for transport elements of the upper level are upwardly pointing ribs 52 with holes 54. You can thereby turn the hook-hanging upper housing part by 180 °, so that the upper strainer basket 3 is easily accessible for inspection purposes and to be able to easily expand if necessary.
  • the center of hitching devices 51 of the upper housing part 1 'for hooks or loops of holding chains or ropes in the horizontal plane of the center of gravity of the upper housing part 1' including the upper sieve basket 3 'or is at most 100 mm higher than this level on the upper part 1 '. It is also advantageous if the upper housing part 1 'is formed in one piece with the cover wall 56' of the sorter, that is to say there is no separate housing cover.
  • the inflow space is limited by an upper (57) and a lower, horizontal plate 57 'connected to the respective housing part 1' or 2 'and a vertical, predominantly circular partition 61 located in the area of the accept material outlet 65. Die In the same way as in Fig. 1 attached outlet nozzle for the screen overflow can also be seen here and designated 10 'or 13'.
  • the rotor drums 21, 22 or 21 'and 22' are connected to form a unit with a very smooth surface, there being a recess between the rotor drums (71 in FIGS. 1 and 72 in FIG. 3) in order to considerably enlarge the inflow space 23 or 63 for the suspension.
  • 3 of support ribs 35 'and 36' are connected to the support sleeve 39 'and the shaft 6' is fastened by means of nut 68.
  • the load-bearing part of the housing attachment part i.e. the one end edge of the support ring 31 in FIG. 1 or the support plate 57 for the screen basket 3 ', ends at the same time with only a slight deviation in the axial direction, like the corresponding end edge of the Sieve basket or a supporting ring attached to it.
  • This edge is designated 11 in FIG. 1.
  • a deviation between these two edges upwards and downwards is at most about 30 to 50 mm, this deviation can fluctuate with the design in this area and can possibly be up to 40 mm.
  • the parting line of the outer walls 8, 9 or 8 ', 9' 'of the housing parts can of course shift somewhat more, in particular in the direction of the housing attachment part 1 or 1'.

Abstract

The invention relates to a screening apparatus which has at least one each of a housing attachment part (1, 1') and housing main part (2, 2') which each have a hollow-cylindrical (8, 8', 9, 9') and/or frustoconical housing outer wall with at least two coaxial, essentially rotationally symmetrical screening baskets (3, 3', 4, 4') with a rotor (5, 5') having pulsation elements (7), the accepted material chamber (37) being arranged radially outside the screening baskets (3, 4) and the rotor part (rotor parts) with the pulsation elements (7) radially inside the screening baskets (3, 4), the inflow (19) into the housing being arranged centrally in the region between the screening baskets (3, 4) and the outflow channel (26) for accepted material being arranged also in the region between the two screening baskets (3, 4). The invention is characterised in that, at least in the region of the screening baskets (3, 3', 4, 4'), only one housing main part (2, 2') and housing attachment part or housing mount part (1, 1') in each case is provided and in that the first screening basket (3, 3') is fastened in the housing attachment part or housing mount part (1, 1') and the second screening basket (4, 4') is fastened in the housing main part (2, 2'). <IMAGE>

Description

Die Erfindung betrifft einen Sortierer entsprechend dem Oberbegriff des Patentanspruchs 1. Ein solcher Sortierer ist bekannt aus EP 0 036 329. Dieser Sortierer weist eine mittige, im Bereich zwischen den oberen und unteren, jeweils konzentrischen Siebkörben angeordnete Einströmung auf. Die Ausströmung ist ebenfalls in diesem Bereich vorgesehen.The invention relates to a sorter according to the preamble of claim 1. Such a sorter is known from EP 0 036 329. This sorter has a central inflow arranged in the area between the upper and lower, respectively concentric screen baskets. The outflow is also provided in this area.

Ein Problem bei solchen Siebsortierern ist die Zugänglichkeit der Siebkörbe für Inspektionszwecke.A problem with such screen sorters is the accessibility of the screen baskets for inspection purposes.

Die Aufgabe der Erfindung, diesem Problem beizukommen, wird durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst.The object of the invention to solve this problem is solved by the features of the characterizing part of patent claim 1.

Man kann vorteilhaft vorsehen, daß die axial äußerste Kante des Gehäuseansatzteils bzw. der entsprechenden Gehäuseschale im Bereich der Gehäuseteilfuge höchstens mit einer Abweichung von 20 mm mit der entsprechenden axial äußersten Kante des entsprechenden Siebkorbes endet. Man kann günstig dann vorsehen, daß die Einströmung ebenso wie die Ausströmung am Gehäusehauptteil vorgesehen ist, so daß keine Demontage zusätzlicher Rohrleitungen nötig ist. Selbstverständlich muß die Rohrleitung für den Spuckstoffabzug des Gehäuseansatzteils für Inspektionszwecke der Siebkörbe entfernt werden. Ebenfalls betrifft dies eine Entlüftungsleitung. Indem man in zwei verschiedenen Vertikalebenen Haltevorrichtungen für Transportmittel des Gehäuseansatzteils vorsieht, kann man dieses Gehäuseteil nach Entfernung vom Gehäusehauptteil wenden, so daß der Siebkorb frei zugänglich wird. Man kann die im Bereich der Gehäusedeckelwand befindlichen Haltevorrichtungen zu dem Zweck auch so ausbilden, daß sie als Aufstandselemente bei der Inspektion dienen.It can advantageously be provided that the axially outermost edge of the housing attachment part or the corresponding housing shell in the region of the housing part joint ends at most with a deviation of 20 mm with the corresponding axially outermost edge of the corresponding screen basket. It can then be conveniently provided that the inflow, like the outflow, is provided on the main housing part, so that no additional pipes have to be dismantled. Of course, the pipeline for the discharge of the rejects from the housing attachment part must be removed for inspection purposes of the screen baskets. This also applies to a ventilation line. By providing holding devices for transport means of the housing attachment part in two different vertical planes, this housing part can be removed turn from the main part of the housing so that the strainer basket is freely accessible. For the purpose, the holding devices located in the area of the housing cover wall can also be designed such that they serve as contact elements during the inspection.

Nachfolgend wird die Erfindung anhand der Ausführungsbeispiele in der Zeichnung erläutert, wobei

  • Figur 1 und 3 Axialschnitte senkrecht zur Zeichenebene der
  • Figur 2 durch zwei erfindungsgemäß ausgebildete Sortierer sowie
  • Figur 2 eine Ansicht des Sortierers nach Figur 1 und
  • Figur 4 auch einen Axialschnitt durch einen weiteren erfindungsgemäßen Sortierer darstellen.
The invention is explained below using the exemplary embodiments in the drawing, in which:
  • Figure 1 and 3 axial sections perpendicular to the plane of the
  • Figure 2 by two sorters designed according to the invention and
  • Figure 2 is a view of the sorter of Figure 1 and
  • Figure 4 also represent an axial section through another sorter according to the invention.

Dabei ist in Fig. 1 eine Horizontalanordnung von Siebkörben und Rotor mit vertikaler Gehäuseteilfuge dargestellt.1 shows a horizontal arrangement of screen baskets and rotor with a vertical parting joint.

Das Gehäuseansatzteil 1 ist an einem Gehäusehauptteil 2 befestigt und ist ähnlich wie dieses mit einer kegelstumpfförmigen Gehäuseaußenwand 8 gebildet, in welcher über gehäuseseitige und siebseitige Tragringe der Siebkorb montiert werden kann. Dabei sind Tragrippen 30 des Gehäuseansatzteils vorgesehen, an denen einen Tragring 31 der entsprechenden Gehäuseaußenwand 8 befestigt ist. Mittels eines Klemmringes 29 wird der erste Siebkorb an der Gehäuseaußenwand verspannt. Die Siebkörbe sind an ihren anderen Enden mittels ihrer dortigen endseitigen Befestigungsringe an den radialen Ringflächen von Ringen 76 bzw. 76' gleitend geführt.The housing attachment part 1 is fastened to a main housing part 2 and, like this, is formed with a truncated cone-shaped housing outer wall 8, in which the strainer basket can be mounted via support rings on the housing and sieve side. Support ribs 30 of the housing attachment part are provided, to which a support ring 31 of the corresponding housing outer wall 8 is fastened. The first strainer basket is clamped to the outer wall of the housing by means of a clamping ring 29. The sieve baskets are slidably guided at their other ends by means of their end-side fastening rings there on the radial ring surfaces of rings 76 and 76 '.

Die Gehäuseaußenwand 9 des Gehäusehauptteils 2 ist im von der Teilfuge der beiden Teilgehäuse 1 und 2 entfernten Bereich ebenfalls kegelstumpfförmig ausgebildet und weist in ihrem anderen Bereich einen Zylinderteil 9' auf. An diesem Teil ist sowohl die Ausströmung für den Gutstoff mit Ausströmöffnung 26 angeschlossen als auch die Einströmung mit Einlaßstutzen 19 hindurchgeführt. Die Einlaßöffnung ist mit 16 beziffert. In diesem Bereich befindet sich in der Nähe des zylindrischen Wandungsteils der Gehäuseaußenwand 9 eine zylindrische Trennwand 24, die mittels dem Spannring 29 für den ersten Siebkorb 3 und einem entsprechenden Spannring für den anderen Siebkorb 4 (siehe auch Tragring 31) den Einströmraum 23 vom Gutstoffraum trennt. Die (hier vertikale) axial äußerste Gehäusekante der Gehäuseaußenwand 8 endet in diesem Fall praktisch mit der axial äußersten Kante 11 des ersten Siebkorbes 3. Es wird hier eine nur geringfügige Abweichung von maximal 150 mm, praktischerweise jedoch viel geringer empfohlen. Es bietet sich wegen der Anordnung von Einströmung und Ausströmung an, die Abweichung höchstens mit 20 mm zu bemessen. Die Verbindung von Gehäuseansatzteil 1 und Gehäusehauptteil 2 erfolgt mittels Schrauben und Flanschen 32 bzw. 38; ein gesonderter Gehäusedeckel ist überflüssig.The housing outer wall 9 of the housing main part 2 is also frustoconical in the area removed from the parting line of the two part housings 1 and 2 and has a cylinder part 9 'in its other area. Both the outflow for the accepted substance with outflow opening 26 and the inflow with inlet connection 19 are connected to this part passed through. The inlet opening is numbered 16. In this area, in the vicinity of the cylindrical wall part of the outer wall 9 of the housing, there is a cylindrical partition wall 24 which separates the inflow space 23 from the accept material space by means of the tension ring 29 for the first strainer basket 3 and a corresponding tension ring for the other strainer basket 4 (see also support ring 31) . In this case, the (here vertical) axially outermost housing edge of the housing outer wall 8 practically ends with the axially outermost edge 11 of the first strainer basket 3. Only a slight deviation of a maximum of 150 mm is recommended here, but practically much less. Because of the arrangement of the inflow and outflow, it is advisable to measure the deviation at most with 20 mm. The connection of housing attachment part 1 and housing main part 2 is made by means of screws and flanges 32 and 38 a separate housing cover is unnecessary.

Liegen Gehäuseteilfuge und Endfläche des Tragringes 31 nämlich in einer Ebene, kann man durch entsprechende spanabhebende Bearbeitung dieser Flächen und der Trennwand 24 leicht die Abdichtung des Einströmraumes 23 herstellen.If the housing part joint and the end face of the support ring 31 are in one plane, one can easily seal the inflow space 23 by appropriate machining of these faces and the partition wall 24.

Es ist weiter auch günstig, wenn das Gehäuseansatzteil 1 oder -aufsatzteil 1' mit für den ihm zugeordneten ersten Siebkorb 3 vorgesehenen Tragteilen 30, 31; 57 oder Tragelementen bis auf eine maximale Abweichung von 20 mm + der Dicke des zum Halten des Siebkorbes 3 bestimmten Endringes 59 desselben bis zur dem anderen Siebkorb 4 nahen Endkante des ersten Siebkorbes 3 oder dessen dort befindlichen Endringes 59' reicht, an welchen Tragteilen 30, 31; 57 der erste Siebkorb 3 befestigt und axial fixiert ist.It is furthermore also favorable if the housing attachment part 1 or attachment part 1 'with support parts 30, 31; 57 or support elements up to a maximum deviation of 20 mm + the thickness of the end ring 59 intended for holding the strainer basket 3 up to the end edge of the first strainer basket 3 or the end ring 59 ′ located there close to the other strainer basket 4, on which support parts 30, 31; 57 the first screen basket 3 is fixed and axially fixed.

Das Gehäusehauptteil ist mittels seiner Tragfüße 44 und 45 auf dem Fundament 41 abgestützt. Es ist somit das Gehäuseansatzteil am Gehäusehauptteil, in dem auch der Rotor gelagert ist, befestigt und von diesem getragen.The main housing part is supported on the foundation 41 by means of its support feet 44 and 45. The housing attachment part on the main housing part, in which the rotor is also mounted, is thus fastened and carried by the latter.

Der Einströmraum 24 führt die Suspension dem zwischen Zylinderteilen 21 bzw. 22 des Rotors 5 und dem jeweiligen Siebkorb 3 bzw. 4 befindlichen Siebraum zu. In diesem Siebraum sind die Sortierelemente 7 des Rotors vorgesehen.The inflow space 24 feeds the suspension to the sieve space located between cylinder parts 21 and 22 of the rotor 5 and the respective sieve basket 3 and 4, respectively. The sorting elements 7 of the rotor are provided in this screen space.

Der Rotor wird von einer Welle 6 gehalten, welche über Lagerteile 17 und 20 sowie ein kegelstumpfförmiges Lagerteil 18 mittels Kugel- oder Gleitlagern im Gehäusehauptteil 2 gelagert ist. Der Antrieb der Rotorwelle erfolgt hier über eine Riemenscheibe 43. Die Verbindung des Rotors 5 zur Rotorwelle 6 erfolgt über die Hülse 39 mittels Rippen 35 und 36 sowie einem kegelstumpfförmigen Zwischenteil 34.The rotor is held by a shaft 6 which is mounted in the main housing part 2 by means of ball or slide bearings via bearing parts 17 and 20 and a frustoconical bearing part 18. The rotor shaft is driven here by a belt pulley 43. The connection of the rotor 5 to the rotor shaft 6 takes place via the sleeve 39 by means of ribs 35 and 36 and a frustoconical intermediate part 34.

Die Anordnung ist günstigerweise so getroffen, daß das Gehäuseansatzteil 1 mit der Deckelwand 56 des Sortierers einstückig ausgebildet ist, wobei der Gutstoffraum 37 radial außerhalb und der Rotorteil (Rotorteile) mit den Pulsationselementen 7 radial innerhalb der Siebkörbe 3, 4 angeordnet sind.The arrangement is expediently such that the housing attachment part 1 is formed in one piece with the cover wall 56 of the sorter, the accept material space 37 being arranged radially outside and the rotor part (rotor parts) with the pulsation elements 7 being arranged radially inside the screen baskets 3, 4.

Die Ausströmungen für den Spuckstoff (d.h. genaugenommen den Siebüberlauf) sind mit 13 bzw. 10 bezeichnet, wobei noch die Ausströmöffnung des Gehäuseansatzteils 1 bei 14 angedeutet ist.The outflows for the rejects (i.e., strictly speaking, the screen overflow) are denoted by 13 and 10, respectively, with the outflow opening of the housing attachment part 1 being indicated at 14.

Haltevorrichtungen 49 für das Gehäuseansatzteil 1 sind als Rippen ausgebildet. Weitere Tragelemente für Transportelemente sind seitlich ragende Rippen 52 mit Löchern 54. Sie dienen auch als Standfüße. Man kann dadurch den an Haken hängenden Gehäuseansatzteil um 90° wenden, so daß der erste Siebkorb 3 leicht zugänglich wird, um ihn für Inspektionszwecke in Augenschein zu nehmen und gegebenenfalls auch dann leicht ausbauen zu können.Holding devices 49 for the housing attachment part 1 are designed as ribs. Other supporting elements for transport elements are laterally projecting ribs 52 with holes 54. They also serve as feet. One can thereby turn the housing attachment part hanging on the hook by 90 °, so that the first strainer basket 3 is easily accessible in order to inspect it for inspection purposes and, if necessary, then also to be able to be easily removed.

Für das Gehäusehauptteil 2 sind Transportösen 55 und 58 vorgesehen. Zusätzliche Füße 60 können vorgesehen werden, um eventuell die Montage des Siebkorbes 4 und auch des Rotors bzw. seiner Lagerung zu erleichtern, indem man diesen Gehäuseteil aufrichtet.Transport eyelets 55 and 58 are provided for the main housing part 2. Additional feet 60 can be provided in order to possibly facilitate the assembly of the screen basket 4 and also of the rotor or its storage by erecting this housing part.

Man kann auch den Transportvorrichtungen 51, 53 der Fig. 3 entsprechende Transportvorrichtungen 55', 58' anstelle oder zusätzlich zu den Transportvorrichtungen 55, 58 vorsehen.Transport devices 55 ', 58' corresponding to the transport devices 51, 53 of FIG. 3 can also be provided instead of or in addition to the transport devices 55, 58.

In der Vertikalanordnung von Gehäuse, Siebkörben und Rotor der Fig. 3, in welcher gleiche oder ähnliche Teile wie in Fig. 1 mit den gleichen Bezugszeichen, jedoch mit Beistrich versehen sind, ist neben der Gehäusefußanordnung im wesentlichen nur der Einströmbereich und die Art der Trommelkonstruktion unterschiedlich zu Fig. 1, sowie ferner die Tatsache, daß eine exzentrische Zuordnung von Sortierergehäuse einerseits und Rotor 5' sowie Siebkörben 3' und 4' andererseits besteht, wie durch den Versatz der beiden angedeuteten Mittellinien erkennbar wird. Dieser Versatz beträgt mindestens 30 mm, wobei die Mittelachse des Gehäuses im Verhältnis zur Rotorachse in Richtung zum Gutstoffauslaß 65 verschoben ist. Dadurch vergrößert sich der Raum im Bereich des Gutstoffauslasses, wo die beiden Gutstoffströme vom ersten Siebkorb 3' und zweiten Siebkorb 4' bzw. jeweiligen Gutstoffraum 66 und 67 aufeinander zu und dann vereinigt dem Gutstoffauslaß 65 zuströmen.In the vertical arrangement of the housing, screen baskets and rotor of FIG. 3, in which the same or similar parts as in FIG. 1 are provided with the same reference numerals but with a comma, in addition to the housing base arrangement, essentially only the inflow area and the type of drum construction different from Fig. 1, and also the fact that there is an eccentric assignment of the sorter housing on the one hand and the rotor 5 'and screen baskets 3' and 4 'on the other, as can be seen from the offset of the two indicated center lines. This offset is at least 30 mm, the central axis of the housing being displaced in relation to the rotor axis in the direction of the accept material outlet 65. This increases the space in the area of the accept material outlet, where the two accept material flows from the first screen basket 3 'and second screen basket 4' or the respective accept material space 66 and 67 towards one another and then unite to the accept material outlet 65.

Diese Anordnung ist natürlich auch für die Horizontalaufstellung möglich, d.h. alle Querschnittsfiguren eignen sich für beide Aufstellungsvarianten.This arrangement is of course also possible for horizontal installation, i.e. all cross-sectional figures are suitable for both types of installation.

Das Gehäuseunterteil 2' ist mittels seiner unteren Tragplatte 33 auf Lagersäulen 32 auf dem Fundament 41 abgestützt.The lower housing part 2 'is supported by its lower support plate 33 on bearing columns 32 on the foundation 41.

Haltevorrichtungen für das obere Gehäuseteil 1' befinden sich in einer unteren Ebene und sind als von Rippen 53 verstärkt am Gehäuse gehaltene Tragzylinder 51 ausgebildet. Die Tragelemente für Transportelemente der oberen Ebene sind nach oben weisende Rippen 52 mit Löchern 54. Man kann dadurch den an Haken hängenden oberen Gehäuseteil um 180° wenden, so daß der obere Siebkorb 3 leicht zugänglich wird, um ihn für Inspektionszwecke in Augenschein zu nehmen und gegebenenfalls auch dann leicht ausbauen zu können.Holding devices for the upper housing part 1 'are located in a lower level and are designed as support cylinders 51 held on the housing by ribs 53. The supporting elements for transport elements of the upper level are upwardly pointing ribs 52 with holes 54. You can thereby turn the hook-hanging upper housing part by 180 °, so that the upper strainer basket 3 is easily accessible for inspection purposes and to be able to easily expand if necessary.

Man kann zweckmäßig für ein leichtes Wenden des Gehäuseoberteils 1 auch vorsehen, daß die Mitte von Anhängevorrichtungen 51 des oberen Gehäuseteils 1' für Haken oder Schlaufen von Halteketten oder Seilen in der horizontalen Ebene des Schwerpunkts des oberen Gehäuseteils 1' einschließlich des oberen Siebkorbes 3' oder höchstens 100 mm höher als diese Ebene am Oberteil 1' vorgesehen ist. Es ist weiter auch günstig, wenn das Gehäuseoberteil 1' mit der Deckelwand 56' des Sortierers einstückig ausgebildet ist, also kein gesonderter Gehäusedeckel vorhanden ist.It can also be conveniently provided for a slight turning of the upper housing part 1 that the center of hitching devices 51 of the upper housing part 1 'for hooks or loops of holding chains or ropes in the horizontal plane of the center of gravity of the upper housing part 1' including the upper sieve basket 3 'or is at most 100 mm higher than this level on the upper part 1 '. It is also advantageous if the upper housing part 1 'is formed in one piece with the cover wall 56' of the sorter, that is to say there is no separate housing cover.

Der Einströmraum ist dabei begrenzt durch je eine mit dem jeweiligen Gehäuseteil 1' bzw. 2' verbundene obere (57) und untere, horizontale Platte 57' sowie eine sich im wesentlichen im Bereich des Gutstoffauslasses 65 befindende vertikale, überwiegend kreisförmig gebogene Trennwand 61. Die in gleicher Weise wie in Fig. 1 angebrachten Auslaßstutzen für den Siebüberlauf sind hier ebenfalls zu erkennen und mit 10' bzw. 13' bezeichnet.The inflow space is limited by an upper (57) and a lower, horizontal plate 57 'connected to the respective housing part 1' or 2 'and a vertical, predominantly circular partition 61 located in the area of the accept material outlet 65. Die In the same way as in Fig. 1 attached outlet nozzle for the screen overflow can also be seen here and designated 10 'or 13'.

Man erkennt aus beiden Figuren, daß die Rotortrommeln 21, 22 bzw. 21' und 22' zu einer Einheit mit sehr glatter Oberfläche verbunden sind, wobei sich zwischen den Rotortrommeln eine Einziehung befindet (71 in Fig. 1 und 72 in Fig. 3), um den Einströmraum 23 bzw. 63 für die Suspension erheblich zu vergrößern. Dabei werden die Rotortrommeln nach Fig. 3 von Tragrippen 35' und 36' mit der Traghülse 39' verbunden und es erfolgt die Befestigung an der Welle 6' mittels Mutter 68.It can be seen from both figures that the rotor drums 21, 22 or 21 'and 22' are connected to form a unit with a very smooth surface, there being a recess between the rotor drums (71 in FIGS. 1 and 72 in FIG. 3) in order to considerably enlarge the inflow space 23 or 63 for the suspension. 3 of support ribs 35 'and 36' are connected to the support sleeve 39 'and the shaft 6' is fastened by means of nut 68.

Grundsätzlich ist zu den Ausführungsformen zu sagen, daß die tragende Teilfuge des Gehäuseansatzteils, also die eine Endkante des Tragringes 31 in Fig. 1 bzw. der Tragplatte 57 für den Siebkorb 3' mit nur geringer Abweichung in axialer Richtung gleichzeitig endet wie die entsprechende Endkante des Siebkorbes bzw. eines mit ihm befestigten Tragringes desselben. Diese Kante ist in Fig. 1 mit 11 bezeichnet. Eine Abweichung zwischen diesen beiden Kanten nach oben und unten beträgt höchstens etwa 30 bis 50 mm, wobei diese Abweichung mit der konstruktiven Ausgestaltung in diesem Bereich schwanken kann und eventuell bis zu 40 mm betragen kann. Die Trennfuge der Außenwände 8, 9 bzw. 8', 9'' der Gehäuseteile kann sich natürlich etwas mehr, insbesondere in Richtung zum Gehäuseansatzteil 1 bzw. 1' hin verschieben. Dies hängt ganz ab von der Ausgestaltung des Gutstoffabzugsstutzens 65 bzw. des Einlaßstutzens 19 hinsichtlich deren Durchmesser bzw. grundsätzlicher Konfiguration. Dies ändert jedoch nichts daran, daß der erste Siebkorb mit dem Gehäuseansatzteil verspannt ist und nach Trennen der beiden Gehäusehälften durch Wenden des Gehäuseansatzteils frei zugänglich für Inspektion und Montagezwecke wird.Basically, it can be said about the embodiments that the load-bearing part of the housing attachment part, i.e. the one end edge of the support ring 31 in FIG. 1 or the support plate 57 for the screen basket 3 ', ends at the same time with only a slight deviation in the axial direction, like the corresponding end edge of the Sieve basket or a supporting ring attached to it. This edge is designated 11 in FIG. 1. A deviation between these two edges upwards and downwards is at most about 30 to 50 mm, this deviation can fluctuate with the design in this area and can possibly be up to 40 mm. The parting line of the outer walls 8, 9 or 8 ', 9' 'of the housing parts can of course shift somewhat more, in particular in the direction of the housing attachment part 1 or 1'. This depends entirely on the design of the accept material discharge nozzle 65 or the inlet nozzle 19 with regard to their diameter or basic configuration. However, this does not change the fact that the first strainer basket is clamped to the housing attachment part and, after separating the two housing halves, is freely accessible for inspection and assembly purposes by turning the housing attachment part.

In Fig. 4 ist eine Anordnung mit relativ "kurzem" Gehäuseansatzteil oder -oberteil 1'' mit einer Rippenanordnung 70 zum Befestigen des diesem Gehäuseteil zugeordneten Siebkorbes 3 dargestellt, der an dem (radial inneren) Tragring 68 festgeschraubt wird. Rippen 73 lassen zwischen sich Durchströmquerschnitte von dem Gutstoffraum zur Ausströmung 26' hin frei. Ansonsten entspricht der innere Aufbau (und im wesentlichen auch äußere) des Sortierers dem nach Fig. 1.4 shows an arrangement with a relatively “short” housing attachment part or upper part 1 ″ with a rib arrangement 70 for fastening the strainer basket 3 assigned to this housing part, which is screwed onto the (radially inner) support ring 68. Ribs 73 leave flow cross sections between them from the accept material space to the outflow 26 ′. Otherwise, the inner structure (and essentially also outer) of the sorter corresponds to that according to FIG. 1.

Claims (12)

  1. Grader comprising at least one respective housing attachment (1, 1') and housing main part (2, 2') which each comprise a hollow cylindrical (8, 8', 9, 9') and/or truncated cone-shaped external housing wall, with at least two coaxial substantially rotationally symmetrical screening baskets (3, 3', 4, 4') with a rotor (5, 5') comprising pulsation elements (7), wherein the product chamber (37) is arranged radially outside the screening baskets (3, 4) and the rotor part (rotor parts) with the pulsation elements (7) are arranged radially inside the screening baskets (3, 4), the intake (19) of the housing is arranged centrally in the region between the screening baskets (3, 4) and the outlet duct (26) for product is also arranged in the region between the two screening baskets (3, 4), characterised in that at least in the region of the screening baskets (3, 3', 4, 4') there is provided only one respective housing main part (2, 2') and attachment or fixture (1, 1') and in that the first screening basket (3, 3') is fastened in the housing attachment or fixture (1, 1') and the second screening basket (4, 4') in the housing main part (2, 2').
  2. Grader according to claim 1, characterised in that inlet (19, 16) of the housing and product outlet (26, 65) are provided in the housing main part (2, 2').
  3. Grader according to claim 1 or 2, characterised in that an annular intake chamber (23) is formed essentially by a cylindrical barrier wall (24) and by a carrying ring (31) for the associated screening basket (3) connected to the external wall (8) of the housing attachment or fixture and a corresponding carrying ring (31') for the other screening basket (4) connected to the external housing wall (9, 9') of the housing main part (2).
  4. Grader according to claim 3, characterised in that the mounting of the screening baskets (3) close to the housing joint is formed by ribs (30) connected to the external housing wall (8) of the housing attachment or fixture (1) and a carrying ring (31) held by them in each case.
  5. Grader according to one of claims 1 or 2, characterised in that the intake chamber (63) of the housing is formed by a respective carrying plate (57) connected to the external wall (8') of the housing attachment (1) and serving for the mounting of the corresponding screening basket (3') and a corresponding carrying plate (58) connected to the external wall (9'') of the housing main part and serving for the mounting of the other screening basket (4') and by a partition wall (61) extending horizontally in the case of so-called vertical allocation and vertically in the case of a horizontal arrangement of the screening baskets (3, 4) and arranged in the region of the discharge orifices from the two product chambers (66, 67) leading to the product exit (65) in the region of the inlet orifice of the housing and in that the axis of rotational symmetry of the substantially rotationally symmetrical external walls of the housing is offset in relation to the central axis of screening baskets (3', 4') and rotor (5') toward the product exit (65) by an amount of at least 30 mm.
  6. Grader according to one of claims 1 to 5, characterised in that the rotor (5, 5') has two coaxial drums (21, 22; 21', 22') which carry the pulsation elements (7) and each limit a tubular screening chamber relative to the associated screening basket (3, 4; 3', 4') and in that a constriction (71, 72) forming an enlarged intake chamber (23) adjacent to the intake (19) is located between the two rotor drums (3, 4; 3', 4').
  7. Grader according to claim 6, characterised in that at least the drum (3, 3') of the housing attachment or fixture (1, 1') is closed and covered by a plate.
  8. Grader according to one of claims 1 to 7, characterised in that the housing attachment (1, 1') is formed integrally with the covering wall (56, 56') of the grader.
  9. Grader according to one of claims 1 to 8, characterised in that the housing attachment (1) or fixture (1') with carrying members (30, 31; 57) or carrying elements provided for the first screening basket (3) allocated to it extends to a maximum deviation of 20 mm plus the thickness of the terminal ring (59) thereof intended to hold the screening basket (3) up to the terminal edge of the first screening basket (3) close to the other screening basket (4) or its terminal ring (59') located there, on which carrying members (30, 31; 57) the first screening basket (3) is fastened and axially fixed.
  10. Grader according to one of claims 1 to 8, characterised in that a guide in the form of the radially internal annular surface of a ring (76, 76') is provided at the end of the screening baskets (3, 4) remote from the housing joint in each case.
  11. Grader according to one of claims 1 to 10, characterised in that the carrying ring (68) close to the intake region of the housing parts for the screening basket (3) of the housing attachment or fixture (1'') is provided on a carrying rib structure (70) fastened on this housing part.
  12. Grader according to one of claims 1 to 11, characterised in that in the region of the joint of the housing parts (1, 2) the axially extreme edge of the external housing wall (8, 8', 9, 9') of the housing attachment or fixture is arranged in the region of the axially extreme edge (11) of the first screening basket (3) or axially offset from it by up to 150 mm.
EP92117523A 1991-10-31 1992-10-14 Screening apparatus Expired - Lifetime EP0541979B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135854 1991-10-31
DE4135854A DE4135854A1 (en) 1991-10-31 1991-10-31 SORTER

Publications (2)

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EP0541979A1 EP0541979A1 (en) 1993-05-19
EP0541979B1 true EP0541979B1 (en) 1995-08-09

Family

ID=6443789

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Application Number Title Priority Date Filing Date
EP92117523A Expired - Lifetime EP0541979B1 (en) 1991-10-31 1992-10-14 Screening apparatus

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US (1) US5318186A (en)
EP (1) EP0541979B1 (en)
JP (1) JP3428670B2 (en)
KR (1) KR0142410B1 (en)
AT (1) ATE126295T1 (en)
BR (1) BR9204160A (en)
CA (1) CA2081855C (en)
DE (2) DE4135854A1 (en)
ES (1) ES2075567T3 (en)
FI (1) FI110526B (en)
NO (1) NO180389C (en)

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SE504162C2 (en) * 1994-12-07 1996-11-25 Sunds Defibrator Ind Ab A screening device
US5884774A (en) * 1996-03-11 1999-03-23 Aikawa Iron Works Co., Ltd. Papermaking screen
US6155427A (en) * 1996-11-14 2000-12-05 Thermo Black Clawson Inc. Zoned pressure screen
US6193073B1 (en) 1997-08-06 2001-02-27 Thermo Black Clawson Inc. Paper stock screening apparatus and method
SE511786C2 (en) 1998-03-06 1999-11-22 Sunds Defibrator Ind Ab Screening device with two screening chambers for separating fiber suspensions
JP3435346B2 (en) * 1998-04-16 2003-08-11 相川鉄工株式会社 Screen device
SE9901148L (en) 1999-03-29 2000-06-12 Valmet Fibertech Ab Screening device with a rotatable and stationary screen means
AT408772B (en) * 2000-02-03 2002-03-25 Andritz Ag Maschf SORTER FOR CLEANING A FIBER SUSPENSION
AT408773B (en) 2000-02-03 2002-03-25 Andritz Ag Maschf SCREEN AND METHOD FOR PRODUCING SUCH A SCREEN
AT408771B (en) * 2000-02-03 2002-03-25 Andritz Ag Maschf SORTER FOR CLEANING A FIBER SUSPENSION
AT408770B (en) * 2000-02-03 2002-03-25 Andritz Ag Maschf SORTER FOR CLEANING A FIBER SUSPENSION
DE102004031622B4 (en) * 2004-06-30 2006-06-14 Voith Paper Patent Gmbh Pressure sorter for sifting a pulp suspension
FI117867B (en) 2004-12-10 2007-03-30 Metso Paper Inc Sorter and method for sorting the pulp

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US3363759A (en) * 1964-04-29 1968-01-16 Bird Machine Co Screening apparatus with rotary pulsing member
US3547267A (en) * 1967-12-27 1970-12-15 Douglas G Sutherland Straining apparatus
GB1294980A (en) * 1970-05-11 1972-11-01
DE2140904C3 (en) * 1971-08-16 1974-05-09 Hermann Finckh, Metalltuch- Und Maschinenfabrik, 7410 Reutlingen Pressure sorter for pulp suspensions
CA1009583A (en) * 1973-03-23 1977-05-03 Sydney W.H. Hooper Two stage pressure pulp screen device with stationary cylindrical screen
US4440635A (en) * 1979-03-29 1984-04-03 Haigh M. Reiniger Process and apparatus for the recovery of cellulose fibers from paper-plastic mixtures
US4302327A (en) * 1980-03-17 1981-11-24 The Black Clawson Company Center flow screening apparatus
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US5119953A (en) * 1990-04-02 1992-06-09 Celleco Hedemora Ab Pulp suspension screening and fractionation apparatus

Also Published As

Publication number Publication date
CA2081855A1 (en) 1993-05-01
NO924155L (en) 1993-05-03
DE59203217D1 (en) 1995-09-14
NO924155D0 (en) 1992-10-28
US5318186A (en) 1994-06-07
JPH05208170A (en) 1993-08-20
CA2081855C (en) 1998-07-21
ATE126295T1 (en) 1995-08-15
DE4135854A1 (en) 1993-05-06
FI924945A (en) 1993-05-01
NO180389C (en) 1997-04-09
BR9204160A (en) 1993-05-04
KR930008240A (en) 1993-05-21
EP0541979A1 (en) 1993-05-19
FI924945A0 (en) 1992-10-30
KR0142410B1 (en) 1998-07-01
ES2075567T3 (en) 1995-10-01
NO180389B (en) 1996-12-30
FI110526B (en) 2003-02-14
JP3428670B2 (en) 2003-07-22

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