EP0868565B1 - Gerät zum aufbereiten von für die papier- bzw. pappeproduktion vorgesehenen fasersuspensionen - Google Patents
Gerät zum aufbereiten von für die papier- bzw. pappeproduktion vorgesehenen fasersuspensionen Download PDFInfo
- Publication number
- EP0868565B1 EP0868565B1 EP96906729A EP96906729A EP0868565B1 EP 0868565 B1 EP0868565 B1 EP 0868565B1 EP 96906729 A EP96906729 A EP 96906729A EP 96906729 A EP96906729 A EP 96906729A EP 0868565 B1 EP0868565 B1 EP 0868565B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- dirt
- outlet pipe
- housing
- outlet
- 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
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Classifications
-
- 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
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/20—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a horizontal axis
Definitions
- the invention relates to a device for processing for Paper or cardboard production intended and in particular fiber suspensions obtained from waste paper, which are from the contain usable fibers of the suspension to be separated particles, whose specific weight differs significantly from that the useful fibers.
- the sorting openings of which are slit-shaped are and have a slot width down to 0.1 mm.
- thin material area material density less than 2%) worked to ensure trouble-free slot widths being able to work from 0.35 to 0.2 mm, newer developments however, allow fine sorting in the thick matter area at about 4% consistency, with the finest Slits.
- cleaners are used, namely in Cleaner systems, which have several successive stages include, each of which has such a cleaner.
- Centricleaners work fluidly according to the principle of the free vortex; in one conical vessel that tapers downwards the fiber suspension to be cleared of fine heavy dirt by rotating them under high pressure and thus tangentially into the top at high speed Cleaner housing is inserted so that a free vortex is created, in which the fiber suspension helically after streams down; thereby take tangential and angular velocity corresponding to the ever smaller housing diameter more and more, as well as those specific to centrifugal forces acting on heavy particles of dirt.
- the invention was based on the object, one in view on wear problems and energy requirements as cheap as possible Device for processing, in particular, recovered from waste paper To create fiber suspensions with which the Fiber suspension particles whose specific weight varies clearly different from that of the usable fibers, effectively eliminated.
- the one to be treated Fiber suspension in the axial direction in the outer housing is the one to be treated Fiber suspension in the axial direction in the outer housing initiated; the latter takes in the area of its inflow End a stationary, with respect to the housing axis rotationally symmetrical body through which the inflowing Fiber suspension to the peripheral wall of the outer housing is redirected. Since the latter rotates, so in the Annulus between the stationary rotationally symmetrical Body and the peripheral wall of the outer housing in the inflowing Fiber suspension forced a vortex, so that in the vortex core downstream of the stationary rotationally symmetrical Body that collects light dirt.
- This known device has the advantage that the one to be treated Fiber suspension the device with much less Pressure must be supplied as with a device that according to works on the principle of the free vortex, but it also has a number of disadvantages: separation of heavy dirt is not intended, several sliding seals are required, which have a considerable diameter, namely on Inlet pipe for the fiber suspension to be treated and on the accept material outlet pipe socket, and consequently because of the high Relative speeds between the stationary sealing ring and rotating sealing ring are subject to high wear and the abrasive particles of heavy dirt lead to considerable wear not only on the inflow side provided stationary, rotationally symmetrical Body, but also at the inflow end region of the Outer housing, the rotation of which forces the vortex because the fiber suspension accelerates in the direction of rotation must be and consequently a considerable rotary Relative speed between to be accelerated Fiber suspension and outer casing cannot be avoided.
- Centricleaners added, with the heavy dirt from the fiber suspension is separated.
- an essentially drum-like outer housing the latter in the area of its one, upstream
- such a device is proposed to design that the outer housing and the Gutstoffauslass are stationary and the rotationally symmetrical body as around the housing axis is rotatably drivable rotor that a partition that is rotationally symmetrical to the housing axis is provided which is together with the peripheral wall of the
- a device not only allows deposition of light dirt as well as heavy dirt and consequently makes another device, such as a centricleaner, for separating heavy dirt superfluous what contributes to minimizing the energy requirement, but it must only a single element with a relatively small diameter, namely a rotor drive shaft, are sealed, so that seals subject to high wear avoid.
- an inventive Design the device so that wear due to an abrasive effect of heavy dirt particles subject components easily and inexpensively replaced can be, namely the the outer peripheral wall of the Housing casing forming the outer casing, the rotor circumference forming rotor component as well as the separation of accepted material and partition serving for heavy dirt.
- the device according to the invention in terms of efficient separation of light dirt and heavy dirt much lighter adapt to the fiber suspension to be processed than that Device according to EP-0 359 682-B1 because diameter and axial length of both the light dirt outlet pipe and let the partition vary without further ado of that the efficiency of light dirt separation in the known device resulting from EP-0 359 682-B1 must be there, because there must contain the light dirt Suspension part to be deflected twice by 90 ° into the radially aligned rotor bore and axially aligned light dirt outlet pipe to enter.
- the one to be processed occurs Fiber suspension necessarily central and axial Towards the device; this is fundamentally also possible with the device according to the invention (the fiber suspension could e.g. B. via a hollow drive shaft of the rotor in the Device), but preferred are embodiments, at which the inlet for the fiber suspension to be processed than tangentially into the outer casing in the direction of rotor rotation opening pipe is formed, because then leads the inflow speed of the fiber suspension already increases a rotational speed around the housing axis, while at the known devices in question whose rotary drive whole acceleration performance must apply.
- the Partition at its end facing the rotor radial distance from the outer housing peripheral wall and a has such an axial distance from the rotor that one of the latter the outer casing peripheral wall generated adjacent, due to centrifugal forces at least one essential Annular flow region containing part of the heavy dirt with rotational flow component with respect to the housing axis due to the axial flow through the device enters the outer annulus.
- the device according to the invention it is recommended to use the device according to the invention to be designed so that the inlet diameter of the light dirt outlet pipe at the end facing the rotor and the axial distance of the latter from the rotor are that one generated by the latter, at least one essential Part of the light dirt containing to the housing axis concentric core area containing the latter the flow due to the axial flow of the Device enters the light dirt outlet pipe.
- the rotor receives the fiber suspension flowing into the device Accelerated as effectively as possible in the direction of rotation, it is expedient, the rotor on its outer circumference with the suspension to provide elevations which accelerate in the direction of rotation, which are best interchangeable moldings acts so that worn acceleration elements without more can be exchanged.
- the ledges not arranged parallel to the housing axis, but opposite the latter somewhat inclined, can be with this inclination also affect the axial flow rate, which may be an advantage.
- the ratio of the rotor diameter to the diameter of the rotor-side end of the partition the efficiency of Heavy dirt separation, and it has been shown that the Heavy dirt separation is particularly effective when the outside diameter of the rotor is about that size or something is larger than or than the outer diameter of the rotor Partition end.
- the inventive Device not only on the principle of a forced Wirbels works, but also according to the principle of a free vertebra, so that the device in terms of Heavy dirt separation also similar to an entry described Centricleaner works.
- the device shown in Figures 1 and 2 has an inventive circular cylindrical housing 10 with a as a whole with 12 designated peripheral wall, which only from Manufacturing and assembly reasons in two sections 12a and 12b is divided; Furthermore, the housing 10 has one first and second end walls 14 and 16, the latter with a passage opening concentric to a device axis 18 Provide 20 relatively large diameter is to which a cup-shaped, circular cylindrical and for Device axis 18 coaxial additional housing connects, in the following referred to as outlet pot 22. The latter is on the End wall 16 attached and right with a End wall 24 provided.
- a rotatable around the device axis 18 and to the device axis Coaxially arranged rotor 26 is driven by a drive shaft 28 held, which is coaxial to the device axis 18th is sealed through the end wall 14 and is driven by a three-phase motor 30, for which at the End wall 14 a bracket 32 is attached.
- the rotor 26 has a rear end wall attached to the drive shaft 28 36, to which a circular cylindrical jacket 38 is attached is.
- the latter carries a conical cap 40 that together with the rotor jacket 38 and the end wall 36 a sealed Encloses cavity.
- acceleration bars 44 are interchangeably attached, either parallel to the device axis 18 or run so slightly inclined towards it, that they not only contain the fiber suspension to be processed Accelerate rotor rotation direction, but the fiber suspension also force an axial flow component, which 1 is directed from left to right.
- a in the direction of rotation of the rotor 26 in the peripheral wall 12 of the Housing 10 tangentially opening inlet pipe socket 50 serves to introduce the fiber suspension to be treated into the housing 10 and thus in the device, the inlet pipe socket 50 according to the invention at such a point Housing peripheral wall 12 is that the flowing into the device Fiber suspension through the rotor 26 immediately in the direction of rotation is accelerated; the inlet pipe socket is preferably located 50 at the level of the left end region according to FIG. 1 of the rotor shell 38.
- the end wall 16 carries a concentric to the device axis 18 Heavy dirt separator tube 54, which of one with respect the device axis 18 formed rotationally symmetrical partition 56 becomes.
- This has a circular cylindrical upstream Section 56a and a downstream, frustoconical Wall section 56b and forms together with the Housing peripheral wall 12 an outer annular space 58, which is 1 from the left in the region of the partition section 56b tapered to the right.
- a light dirt outlet pipe 60 held and in its longitudinal direction slidably guided, of course, so that the light dirt outlet pipe 60 sealed through the end wall 24 passes. It is designed to be rotationally symmetrical, coaxial arranged to the device axis 18 and except for a conical Inlet area 60a strictly cylindrical.
- the end wall 16 with spokes designed and running supports to be provided, which lie in the passage opening 20 and hold a guide ring in which the light dirt outlet pipe 60 is held displaceably.
- the length of the circular cylindrical Part of the light dirt outlet pipe 60 is so dimensioned so that it is both advanced to a front end position can be, which is dash-dotted in Fig.
- the light dirt outlet pipe 60 ends in proportion small axial distance from the rotor 26; this distance as well as the inflow diameter of the inlet area 60a in any case be chosen so that a sufficiently high percentage the contained in the fiber suspension to be treated Light dirt particles due to that generated by the rotor 26 Vortex in areas close to the axis of the interior of the housing 10 could be pushed and so from the light dirt outlet pipe 60 is detected. If this is done by a sufficient Distance of the light dirt outlet pipe 60 from the rotor 26 guaranteed, it should not be advisable to use this axial Distance of the outlet tube 60 from the rotor 26 even further enlarge.
- the so-called good substance which is at least the predominant one Part of the usable fibers of the treated fiber suspension contains, but no or as little as possible and light dirt particles, flows inside Annulus 70 between heavy dirt separator tube 54 and Light dirt outlet pipe 60 with a helical flow 1 from left to right in the outlet pot 22, in the peripheral wall 23 of an accept material outlet pipe socket 74 flows out, again tangentially opposite the direction of rotation of the rotor 26.
- the separate outlet pot could be used 22 can be easily dispensed with if you look at the housing circumferential wall 12 on the right according to FIG. 1 Extend the outer annular space 58 and with the Gutstoff outlet pipe socket 74 and one of the end wall 24 corresponding End wall would be provided.
- the three-phase motor 30 has a regarding its output frequency adjustable frequency converter is operated, so that the speed of the rotor 26 change slightly and can adjust, the power consumption of the invention Device can be minimized.
- the serves the same purpose Possibility of the light dirt outlet pipe 60 in the axial direction to be able to move to the position of the upstream End of the outlet tube 60 at that of the rotor speed to be able to adjust dependent forced vertebrae at the same time the separation of light dirt particles is optimized.
- the axial distance of the upstream end of the light dirt outlet pipe 60 from the accept outlet, d. H. from the accept material outlet pipe socket 74, should be chosen as large that the material flow emerging from the device is not such Effects on the flow in the area of the inlet of the light dirt outlet pipe can have a significant Number of light dirt particles from the flow of good material is entrained into the inner annular space 70.
- the device according to the invention can also have the following Features that are not shown in the drawing:
- the inside of the housing peripheral wall 12 have a surface structure through which in turbulence is generated in the fiber suspension to be treated, to fluidize the fiber in the carrier liquid, this removes fine impurities from the fiber composite become.
- the device can be operated extremely cost-effectively, namely with an energy expenditure of just over 20 kWh per ton processed fiber suspension (taking into account a power of a suspension feeding the device Pump of 11 kW for that in the previous paragraph described example).
- the heavy dirt separator tube designated as a whole by 54 ' of the device shown in Figures 3 and 4 again of a rotationally symmetrical one with respect to the device axis 18 Partition formed, consisting of an upstream Wall section 56a ', a central wall section 56b 'and a downstream wall section 56c'.
- the wall section 56a ′ forms towards the rotor 26 opening cone
- the wall section 56b ' represents a circular cylinder
- the wall portion 56c ' forms one in Direction of the axial flow through the device Cone corresponding to the conical wall section 56b of the in Fig. 1 shown device.
- the special thing about the device Figures 3 and 4 can now be seen in the following:
- That of the rotor 26 almost on its peripheral speed accelerated fiber suspension to be treated forms in the consisting of the wall portion 56a 'first part of the Heavy dirt separator tube 54 'which has a free vortex thanks to the axial, according to Fig. 3 directed from left to right Flow component of the fiber suspension in the from Wall portion 56a 'formed funnels for the same effect performs like in a Centricleaner described at the beginning. in the Heavy dirt particles still contained in the accept material stream centrifuged in this way, namely against the inner wall of the wall section 56a '.
- the inflow diameter of the heavy dirt separator tube is somewhat to make it larger than the rotor diameter in order to make one as possible large proportion of usable fibers Detect suspension flow and into the interior of the heavy dirt separator tube to let in; this can be done the device variant shown in Figures 3 and 4 therefore allow, because if necessary in the Heavy dirt particles entering the inside of the heavy dirt separator tube are excreted via the annular gap 57 '.
- the wall section 56a ' can otherwise by, for example three spoke-shaped supports are held, which over the Scope of the heavy dirt separator tube 54 'distributed and on the one hand with the wall section 56a 'and on the other hand associated with any part that is immediate or is indirectly rigidly connected to the housing 10, be it the peripheral wall 12 or for example the wall section 56b 'or the wall section 56c'.
- a special feature of the device according to the invention is therein to see that the outer annulus, i.e. H. for example the Annulus 58 in Fig. 1, a storage volume for heavy dirt forms; with appropriate training and arrangement of Light dirt outlet pipe, e.g. B. the one shown in FIG Tube 60, the device according to the invention also has a relative large storage volume for light dirt.
- the device be provided with means by which the share still useful fibers is reduced, which the device over the Leave heavy dirt outlet.
- This confluence or mouths are in an area of the peripheral wall arranged of the outer housing, which in the area of outer annular space, and preferably a little closer at the heavy dirt outlet than at the rotor-side end of the outer annular space delimiting partition (in Fig. 1 the partition 56). Because of this junction or junctions supplied water are still useful fibers from the Heavy dirt washed out, and at least near the confluence approximately radial flow of the supplied Water has a kind of retention effect for the specifically light fibers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Description
- Fig. 1
- einen Längsschnitt durch die erste Ausführungsform des Geräts;
- Fig. 2
- eine Stirnansicht der ersten Ausführungsform, gemäß Fig. 1 von links gesehen, und
- Figuren 3 und 4
- den Figuren 1 und 2 entsprechende Darstellungen der zweiten Ausführungsform.
Claims (23)
- Gerät zum Aufbereiten von insbesondere aus Altpapier gewonnenen Fasersuspensionen, welche von den brauchbaren Fasern der Suspension abzutrennende Partikel enthalten, deren spezifisches Gewicht sich deutlich von demjenigen der brauchbaren Fasern unterscheidet, mit einem im wesentlichen trommelartigen Außengehäuse, welches im Bereich seines einen, anströmseitigen Endes einen bezüglich der Gehäuseachse im wesentlichen rotationssymmetrischen Körper aufnimmt und mit einem Einlaß für die aufzubereitende Fasersuspension versehen ist sowie im Bereich seines anderen, abströmseitigen Endes ein stationäres, zur Gehäuseachse konzentrisches Auslaßrohr (Leichtschmutzauslaß) für einen abzutrennende und spezifisch leichte Partikel enthaltenden ersten Suspensionsteil (Leichtschmutzanteil) aufnimmt und mit einem Gutstoffauslaß für einen im wesentlichen brauchbare Fasern enthaltenden zweiten Suspensionsteil (Gutstoff) versehen ist, und mit einem Drehantrieb zur Erzeugung einer bezüglich der Gehäuseachse rotatorischen Strömungskomponente in dem Ringraum zwischen Außengehäuse und rotationssymmetrischem Körper, dadurch gekennzeichnet, daß das Außengehäuse (10) sowie der Gutstoffauslaß (74) stationär sind und der rotationssymmetrische Körper als um die Gehäuseachse (18) drehantreibbarer Rotor (26) ausgebildet ist, daß eine zur Gehäuseachse (18) rotationssymmetrische Trennwand (56; 56a', 56b', 56c') vorgesehen ist, welche zusammen mit der Umfangswand (12) des Außengehäuses (10) einen in Richtung auf den Rotor (26) stirnseitig offenen und in entgegengesetzter Richtung geschlossenen äußeren Ringraum (58) bildet, der in axialem Abstand von seiner offenen Stirnseite mit einem Auslaß (66) (Schwerschmutzauslaß) für einen abzutrennende und spezifisch schwere Partikel enthaltenden dritten Suspensionsteil (Schwerschmutzanteil) versehen ist, und daß der Gutstoffauslaß (74) mit dem abströmseitigen Ende eines zwischen Trennwand (56; 56a', 56b', 56c') und Leichtschmutz-Auslaßrohr (60) befindlichen inneren Ringraumes (70) kommuniziert.
- Gerät nach Anspruch 1, dadurch gekennzeichnet, daß der Einlaß (50) für die aufzubereitende Fasersuspension als in Rotor-Drehrichtung tangential in das Außengehäuse (10) einmündendes Rohr ausgebildet ist und der Gutstoffauslaß (74) ein in Rotordrehrichtung tangential wegführendes Rohr aufweist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Schwerschmutzauslaß (66) in Rotordrehrichtung tangential vom äußeren Ringraum (58) wegführt.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Achse (18) des Außengehäuses (10) zumindest ungefähr horizontal verläuft.
- Gerät nach Anspruch 4, dadurch gekennzeichnet, daß der Schwerschmutzauslaß (66) von unten in den äußeren Ringraum (58) einmündet.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Trennwand (56; 56a', 56b', 56c') an ihrem dem Rotor (26) zugewandten Ende einen solchen radialen Abstand von der Außengehäuse-Umfangswand (12) sowie einen solchen axialen Abstand vom Rotor (26) aufweist, daß ein von letzterem der Außengehäuse-Umfangswand (12) benachbart erzeugter, aufgrund von Zentrifugalkräften mindestens einen wesentlichen Teil des Schwerschmutzes enthaltender ringförmiger Strömungsbereich mit bezüglich der Gehäuseachse (18) rotatorischer Strömungskomponente aufgrund der axialen Durchströmung des Geräts in den äußeren Ringraum (58) eintritt.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Einlaßdurchmesser des Leichtschmutz-Auslaßrohres (60) an dessen dem Rotor (26) zugewandten Ende sowie der axiale Abstand des letzteren vom Rotor so bemessen sind, daß ein vom Rotor (26) erzeugter, mindestens einen wesentlichen Teil des Leichtschmutzes enthaltender, zur Gehäuseachse (18) konzentrischer und letztere enthaltender Strömungskernbereich aufgrund der axialen Durchströmung des Geräts in das Leichtschmutz-Auslaßrohr (60) eintritt.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der axiale Abstand des dem Rotor (26) zugewandten Endes des Leichtschmutz-Auslaßrohres (60) vom Gutstoffauslaß (74) mindestens so groß ist wie der Abstand vom Rotor (26).
- Gerät nach Anspruch 8, dadurch gekennzeichnet, daß der Abstand des dem Rotor (26) zugewandten Endes des Leichtschmutz-Auslaßrohres (60) vom Gutstoffauslaß (74) ein Vielfaches des Abstandes vom Rotor (26) beträgt.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das Leichtschmutz-Auslaßrohr (60) in axialer Richtung verschiebbar ist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der axiale Abstand des rotorseitigen Trennwandendes vom Rotor (26) höchstens so groß ist wie der Abstand vom Schwerschmutzauslaß (66).
- Gerät nach Anspruch 11, dadurch gekennzeichnet, daß der axiale Abstand des rotorseitigen Trennwandendes vom Schwerschmutzauslaß (66) ein Vielfaches des Abstandes vom Rotor (26) ist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Rotor (26) an seinem Außenumfang mit die Suspension in Rotationsrichtung beschleunigenden Erhebungen (44) versehen ist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Außendurchmesser des Rotors (26) ungefähr so groß oder größer ist wie bzw. als der Außendurchmesser des rotorseitigen Trennwandendes.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Rotor (26) an seiner abströmseitigen Stirnseite kegelförmig ausgebildet ist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß dem Leichtschmutz-Auslaßrohr (60) ein Ventil zugeordnet ist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Schwerschmutzauslaß (66) mit einem Ventil (64) versehen ist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Einlaß (50) im Bereich des Rotorumfangs sowie in Rotordrehrichtung tangential in die Außengehäuse-Umfangswand (12) mündet.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Drehantrieb einen über einen einstellbaren Frequenzwandler gespeisten Drehstrommotor (30) aufweist.
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß wenigstens eines der folgenden Geräteelemente auswechselbar angebracht ist: Rotorumfangsbereich oder Teile hiervon, Leichtschmutz-Auslaßrohr (60) und Trennwand (56; 56a', 56b', 56c').
- Gerät nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Trennwand (56a', 56b', 56c') mindestens in einem dem Rotor zugewandten axialen Abschnitt (56a') sich dem Rotor (26) zu öffnend konisch gestaltet ist und daß die Trennwand ungefähr am rotorfernen Ende des Konusabschnitts wenigstens eine Öffnung (57') für einen Schwerschmutzdurchtritt in den äußeren Ringraum (58) aufweist.
- Gerät nach Anspruch 21, dadurch gekennzeichnet, daß die Öffnung (57') ein sich in Umfangsrichtung erstreckender Ringspalt ist.
- Gerät nach Anspruch 21 oder 22, dadurch gekennzeichnet, daß sich die Trennwand (56a', 56b', 56c') zwischen Durchtrittsöffnung (57') und abströmseitigen Ende konisch erweitert.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19547946 | 1995-12-21 | ||
DE19547946 | 1995-12-21 | ||
PCT/EP1996/000888 WO1997023688A1 (de) | 1995-12-21 | 1996-03-02 | Gerät zum aufbereiten von für die papier- bzw. pappeproduktion vorgesehenen fasersuspensionen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0868565A1 EP0868565A1 (de) | 1998-10-07 |
EP0868565B1 true EP0868565B1 (de) | 1999-12-01 |
Family
ID=7780888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96906729A Expired - Lifetime EP0868565B1 (de) | 1995-12-21 | 1996-03-02 | Gerät zum aufbereiten von für die papier- bzw. pappeproduktion vorgesehenen fasersuspensionen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6068772A (de) |
EP (1) | EP0868565B1 (de) |
AT (1) | ATE187213T1 (de) |
AU (1) | AU701896B2 (de) |
CA (1) | CA2240116A1 (de) |
DE (1) | DE59603807D1 (de) |
WO (1) | WO1997023688A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE517532C2 (sv) * | 2000-10-25 | 2002-06-18 | Rolf Ekholm | Metod och apparat för tvättning av en fibersuspension |
ATE348668T1 (de) * | 2002-05-28 | 2007-01-15 | Dds Technologies Usa Inc | Mikrometrische sortiervorrichtung zum klassieren von feststoffen |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT336392B (de) * | 1974-03-20 | 1977-05-10 | Finckh Metalltuch Maschf | Drucksichter fur faserstoffsuspensionen |
DE2943298A1 (de) * | 1979-10-26 | 1981-04-30 | J.M. Voith Gmbh, 7920 Heidenheim | Wirbelabscheider |
FR2636251B1 (fr) * | 1988-09-13 | 1992-01-17 | Lamort E | Dispositif pour la separation de particules dans un liquide, notamment pour l'epuration de suspensions papetieres |
FR2653037B1 (fr) * | 1989-10-12 | 1991-12-06 | Alsthom Gec | Epurateur centrifuge pour flux gazeux et procede applique dans cet epurateur. |
-
1996
- 1996-03-02 AU AU50028/96A patent/AU701896B2/en not_active Ceased
- 1996-03-02 CA CA002240116A patent/CA2240116A1/en not_active Abandoned
- 1996-03-02 WO PCT/EP1996/000888 patent/WO1997023688A1/de active IP Right Grant
- 1996-03-02 DE DE59603807T patent/DE59603807D1/de not_active Expired - Fee Related
- 1996-03-02 AT AT96906729T patent/ATE187213T1/de not_active IP Right Cessation
- 1996-03-02 EP EP96906729A patent/EP0868565B1/de not_active Expired - Lifetime
-
1998
- 1998-06-19 US US09/099,986 patent/US6068772A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU701896B2 (en) | 1999-02-11 |
ATE187213T1 (de) | 1999-12-15 |
AU5002896A (en) | 1997-07-17 |
US6068772A (en) | 2000-05-30 |
DE59603807D1 (de) | 2000-01-05 |
WO1997023688A1 (de) | 1997-07-03 |
CA2240116A1 (en) | 1997-07-03 |
EP0868565A1 (de) | 1998-10-07 |
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