DE3701669A1 - SORTING WING - Google Patents

SORTING WING

Info

Publication number
DE3701669A1
DE3701669A1 DE19873701669 DE3701669A DE3701669A1 DE 3701669 A1 DE3701669 A1 DE 3701669A1 DE 19873701669 DE19873701669 DE 19873701669 DE 3701669 A DE3701669 A DE 3701669A DE 3701669 A1 DE3701669 A1 DE 3701669A1
Authority
DE
Germany
Prior art keywords
wing
height
sorting
edge
maximum
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
DE19873701669
Other languages
German (de)
Other versions
DE3701669C2 (en
Inventor
Reimund Rienecker
Joachim Nittke
Lothar Dr Ing Pfalzer
Klaus Schmidt
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
Priority to DE19873701669 priority Critical patent/DE3701669A1/en
Priority to ES88100408T priority patent/ES2018303B3/en
Priority to AT88100408T priority patent/ATE56765T1/en
Priority to DE8888100408T priority patent/DE3860609D1/en
Priority to EP88100408A priority patent/EP0275921B1/en
Publication of DE3701669A1 publication Critical patent/DE3701669A1/en
Application granted granted Critical
Publication of DE3701669C2 publication Critical patent/DE3701669C2/de
Granted legal-status Critical Current

Links

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
    • D21D5/02—Straining or screening the pulp
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Laminated Bodies (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Centrifugal Separators (AREA)
  • Rotary Pumps (AREA)
  • Gyroscopes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

1. Screening vane (1) for a rotor with drum-like base body of a screen, which are arranged on the base body distributed over the circumference and staggered over the length, with the radial outer contour of the screening vane (1) steadily increasing in direction of rotation as circular arc up to a maximum end height (H) over the rotor shell surface (15) and then abruptly dropping in the form of a concave circular arc (8) up to the rotor shell surface (15) or to 1/10 of the maximum end height (H), so that a front portion (7) is formed, whose circumferential extension (L 2) corresponds to 1.0 to 1, 5 times the maximum end height (H), and a rear portion (2), whose maximum initial height (h') at the rear edge (12) amounts to 0.2 times the maximum end height (H) and whose length (L 1) amounts to 3 to 8 times, preferably 3 to 7 times the maximum end height (H) and, characterized in that the tangent placed onto the outer contour of the screening vane (1) in the point of the maximum end height (H) runs normal to the radius passing through this point.

Description

Die Erfindung betrifft einen Sortierflügel entsprechend dem Ober­ begriff des Patentanspruchs 1. Ein solcher Sortierflügel ist be­ kanntgeworden durch DE-OS 27 12 749.The invention relates to a sorting wing according to the waiter Concept of claim 1. Such a sorting wing is be became known by DE-OS 27 12 749.

Die Aufgabe der Erfindung ist es demgegenüber, diese an sich ein­ fach herzustellende Flügelform den Sortieraufgaben insofern bes­ ser anzupassen, daß man die trotz der in Richtung senkrecht zur Rotorachse unterteilten und in Umfangsrichtung versetzten Ab­ schnitte der Flügel die Schlagwirkung der Pulsationen herabsetzt, ohne den Sortierwirkungsgrad zu erniedrigen.The object of the invention, in contrast, is this in itself wing shape to be manufactured, the sorting tasks ins adjust water that despite the in the direction perpendicular to Ab divided rotor axis and offset in the circumferential direction cuts the wing reduces the impact of the pulsations, without reducing the sorting efficiency.

Diese Aufgabe wird erfindungsgemäß bei einem Sortierflügel der eingangs genannten Art durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst.This object is achieved with a sorting wing initially mentioned type by the characteristics of the characteristic Part of claim 1 solved.

Nachfolgend wird die Erfindung anhand zwei in den Figuren der Zeichnung dargestellter Ausführungsbeispiele erläutert, wobei The invention is explained below with reference to two in the figures of FIG Drawing illustrated embodiments explained, wherein  

Fig. 1 und 2 zwei Ausführungsformen in Ansicht parallel zur Rotorachse bei teilweise geschnittenem Rotor und Fig. 1 and 2 two embodiments in view of the rotor axis with partially cut rotor in parallel, and

Fig. 3 prinzipmäßig die gegenseitige Zuordnung der Sortierflügel zeigen. Fig. 3 show in principle the mutual assignment of the sorting wing.

Der Sortierflügel 1 besteht aus einem bekannten, hier das Hinter­ teil bildenden Teil 2, dessen radial äußere Kante hier als ein Kreisabschnitt 4 mit später noch zu erläuterndem Radius gebildet ist, dessen radiale Erstreckung bzw. Höhe h von der Hinterkante 12 bis zu der vorderen, steil abfallenden Kante 10 stetig zunimmt und einem vorderen Fortsatz 7, dessen Höhe h bzw. radiale Er­ streckung zur Vorderkante hin stetig abnimmt. Vorzugsweise er­ folgt die Abnahme mit einer Rundung bzw. Hohlkehle, dessen Ra­ dius r etwa gleich der maximalen Höhe h=H des Flügels 1 ist, die an der größten Höhe bzw. größten radialen Erstreckung der Vorderkante vorhanden ist. Der Mittelpunkt des Radius r ist dabei im wesentlichen im gleichen radialen Abstand r=H angeordnet, wie auch der höchste Punkt der Vorderkante 10 liegt.The sorting wing 1 consists of a known part 2 , here forming the rear part, the radially outer edge of which is formed here as a circular section 4 with a radius to be explained later, the radial extent or height h of the rear edge 12 to the front, steeply falling edge 10 increases steadily and a front extension 7 , the height h or radial he stretch to the front edge decreases steadily. He preferably follows the decrease with a rounding or fillet, the radius of which is approximately equal to the maximum height h = H of the wing 1 , which is present at the greatest height or greatest radial extent of the leading edge. The center point of the radius r is arranged essentially at the same radial distance r = H , as is the highest point of the front edge 10 .

Die Gesamtlänge des Flügels L setzt sich zusammen aus der Länge L 1 des mit ansteigender Höhe h versehenen Hinterteils 2 mit der Länge L 2 des Fortsatzes 7. Dabei beträgt die Länge L 2 maximal 1,5 · H. Dabei kann sich der Radiusteil 9 in einem spitz zulau­ fenden Vorderteil 8, der auf die Umfangswandung 15 des Rotors zuläuft und dort endet, fortsetzen (siehe auch Fig. 2). Das Ver­ hältnis von Länge L 1 zur maximalen Höhe H beträgt dabei zwi­ schen 3:1 und 8:1, vorzugsweise 7:1. Der Radius 4 verläuft im wesentlichen tangential ein in die zur durch den höchsten Punkt 10 verlaufende Radiale in diesem Punkt gezogene Senkrechte.The total length of the wing L is composed of the length L 1 of the rear part 2 provided with increasing height h and the length L 2 of the extension 7 . The length L 2 is a maximum of 1.5 · H. The radius part 9 can continue in a tapered front part 8 , which runs to the peripheral wall 15 of the rotor and ends there (see also FIG. 2). The ratio of length L 1 to maximum height H is between 3: 1 and 8: 1, preferably 7: 1. The radius 4 extends essentially tangentially into the perpendicular drawn at this point to the radial through the highest point 10 .

Gemäß Fig. 2 ist dargestellt, daß die Hinterkante 12 nicht auf der Umfangswandung 15 des Rotors zu liegen braucht, sondern daß auch hier eine steil abfallende Kante von maximal h=H′=0,2 · H möglich ist. Der Abrundungsradius r der Vor­ derkante kann auch etwas kleiner oder größer als H′ sein und sich dann bis mindestens zur radialen Erstreckung (Höhenlinie h) er­ strecken, wo h=0,2 H′ und sich dann in einer geraden Linie fortsetzen, wie gezeigt.According to Fig. 2 it is shown that the trailing edge 12 of the rotor does not need to lie on the circumferential wall 15, but that a steep edge of a maximum h = H '= 0.2 x H is also possible here. The radius of curvature r of the leading edge can also be somewhat smaller or larger than H ' and then extend to at least the radial extent (contour line h ), where h = 0.2 H ' and then continue in a straight line, as shown .

Das Verhältnis der Teilung (siehe Fig. 3) t zum Durchmesser D des Rotors liegt zwischen 1:5 und 1:8. Das Längenverhältnis L : D liegt zwischen 1:10 und 1:15. Der Krümmungsradius der Kante 4 liegt zwischen (0,6×0,9) · D/2.The ratio of the pitch (see FIG. 3) t to the diameter D of the rotor is between 1: 5 and 1: 8. The aspect ratio L : D is between 1:10 and 1:15. The radius of curvature of the edge 4 is between (0.6 × 0.9) · D / 2.

Aus Fig. 3 erkennt man noch die Neigung von etwa 10° der Flü­ gel, also aller in den Fig. 1 und 2 sichtbaren Kanten gegen­ über der Erzeugenden der Rotortrommel 15. Dies ist allerdings auch bekannt aus dem Stand der Technik, z. B. aus DE-OS 27 12 749.From FIG. 3 one can still see the inclination of approximately 10 ° of the wing, that is to say all the edges visible in FIGS . 1 and 2 with respect to the generatrix of the rotor drum 15 . However, this is also known from the prior art, for. B. from DE-OS 27 12 749.

Claims (5)

1. Sortierflügel für den Rotor mit trommelartigem Grundkörper eines Sortierers, die in Drehrichtung im Meridianschnitt ste­ tig zunehmenden Querschnitt aufweisen und abrupt in einer steilen Kante enden, gekennzeichnet durch einen - in Dreh­ richtung nach vorn gerichteten - Fortsatz (7) der Sortierflü­ gel (1) der Länge - gerechnet ab dem radialen Projektions­ punkt des höchsten bzw. radial äußersten Punktes mit der Höhe h=H der steil abfallenden Kante (10) des Flügels (1) von (1,0-1,5) · H, dessen Höhe h von der steil abfallenden Kan­ te (10) aus in Drehrichtung nach vorn zu stetig gegen Null oder maximal 0,1 · H abnimmt, wobei die maximale Flügelhöhe an der Hinterkante H′=0,2 · H und das Verhältnis von der maxi­ malen Flügelhöhe H (radiale Erstreckung) zur Länge des Flü­ gels - in Drehrichtung ohne Fortsatz (7) gemessen - zwischen 1/3 und 1/8, vorzugsweise 1/3 und 1/7, beträgt.1.Sorting wing for the rotor with a drum-like base body of a sorter, which has a continuously increasing cross-section in the direction of rotation in the meridian section and which abruptly end in a steep edge, characterized by an extension ( 7 ) of the sorting wing ( 1 ) the length - calculated from the radial projection point of the highest or radially outermost point with the height h = H of the steeply falling edge ( 10 ) of the wing ( 1 ) of (1.0-1.5) · H , its height h from the steeply descending edge ( 10 ) decreases in the direction of rotation forward towards zero or a maximum of 0.1 · H , with the maximum wing height at the rear edge H ′ = 0.2 · H and the ratio of the maximum paint Wing height H (radial extension) to the length of the wing - measured in the direction of rotation without extension ( 7 ) - between 1/3 and 1/8, preferably 1/3 and 1/7. 2. Sortierflügel nach Anspruch 1, dadurch gekennzeichnet, daß der Krümmungsradius des Sortierflügels im Meridianschnitt im wesentlichen tangential an der Stelle der höchsten Höhe (ra­ dialen Erstreckung der steilen Vorderkante) verlaufenden Ra­ dius der Rotortrommel gezogenen Senkrechten an dieser Stelle verläuft.2. Sorting wing according to claim 1, characterized in that the radius of curvature of the sorting wing in the meridian section in essentially tangential at the point of highest altitude (ra extension of the steep leading edge) running Ra dius of the rotor drum drawn at this point runs. 3. Sortierflügel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die abfallende Vorderkante (9) des Fortsatzes (7) von dem höchsten Punkt der Kante (10) ausgehend, einen Abrundungsra­ dius von etwa gleich der maximalen Höhe H aufweist, der sich mindestens bis zu der Höhe (radiale Erstreckung) von höch­ stens 0,2 H erstreckt. 3. Sorting wing according to claim 1 or 2, characterized in that the sloping front edge ( 9 ) of the extension ( 7 ) from the highest point of the edge ( 10 ) starting, a rounding radius of approximately equal to the maximum height H , which is at least extends up to the height (radial extension) of at most 0.2 H. 4. Sortierflügel nach einem der Ansprüche 1 bis 3, dadurch ge­ kennzeichnet, daß das Verhältnis von Teilung zum Rotordurch­ messer t/D zwischen 1:5 und 1:8 liegt.4. Sorting wing according to one of claims 1 to 3, characterized in that the ratio of pitch to the rotor diameter t / D is between 1: 5 and 1: 8. 5. Sortierflügel nach einem der Ansprüche 1 bis 4, dadurch ge­ kennzeichnet, daß die Länge derselben zum Durchmesser des Rotors L : D zwischen 1:10 und 1:20 liegt, wobei die Sortier­ flügel (1) in verschiedenen Meridianebenen und dabei versetzt gegeneinander angeordnet sind.5. Sorting wing according to one of claims 1 to 4, characterized in that the length of the same to the diameter of the rotor L : D is between 1:10 and 1:20, the sorting wing ( 1 ) in different meridian planes and offset against each other are arranged.
DE19873701669 1987-01-22 1987-01-22 SORTING WING Granted DE3701669A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19873701669 DE3701669A1 (en) 1987-01-22 1987-01-22 SORTING WING
ES88100408T ES2018303B3 (en) 1987-01-22 1988-01-14 FIN FINDER
AT88100408T ATE56765T1 (en) 1987-01-22 1988-01-14 SORTING WINGS.
DE8888100408T DE3860609D1 (en) 1987-01-22 1988-01-14 SORTING WING.
EP88100408A EP0275921B1 (en) 1987-01-22 1988-01-14 Cleaning foil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873701669 DE3701669A1 (en) 1987-01-22 1987-01-22 SORTING WING

Publications (2)

Publication Number Publication Date
DE3701669A1 true DE3701669A1 (en) 1988-08-04
DE3701669C2 DE3701669C2 (en) 1989-12-14

Family

ID=6319230

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19873701669 Granted DE3701669A1 (en) 1987-01-22 1987-01-22 SORTING WING
DE8888100408T Expired - Lifetime DE3860609D1 (en) 1987-01-22 1988-01-14 SORTING WING.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8888100408T Expired - Lifetime DE3860609D1 (en) 1987-01-22 1988-01-14 SORTING WING.

Country Status (4)

Country Link
EP (1) EP0275921B1 (en)
AT (1) ATE56765T1 (en)
DE (2) DE3701669A1 (en)
ES (1) ES2018303B3 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005807A1 (en) * 1988-11-17 1990-05-31 Sunds Defibrator Industries Aktiebolag Screening device
WO2012084562A1 (en) 2010-12-22 2012-06-28 Voith Patent Gmbh Pressure screen
DE102011079230A1 (en) 2011-07-15 2013-01-17 Voith Patent Gmbh pressure screens
DE102011089108A1 (en) 2011-12-20 2013-06-20 Voith Patent Gmbh Multipart rotor blade for rotationally symmetric rotor of pressurized sorting machine for cleaning of fibrous material suspension, has wire element surrounding rotor, where parts of blade are interconnected by joint and fastened to rotor
DE102012220330A1 (en) 2012-11-08 2014-05-08 Voith Patent Gmbh Pressure screen for cleaning paper pulp suspension in wet sieving, has rotor which is provided with blades-gap plane that is extended along facing side portion of screen element, and that is provided with ridges
DE102013216433A1 (en) 2013-08-20 2015-03-12 Voith Patent Gmbh pressure screens
DE202015009033U1 (en) 2015-06-03 2016-07-17 Voith Patent Gmbh pressure screens
WO2020193003A1 (en) 2019-03-26 2020-10-01 Voith Patent Gmbh Pressure screen, screen element and method for manufacturing a screen element

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000634A1 (en) * 1992-06-20 1994-01-06 Hermann Finckh Maschinenfabrik Gmbh & Co. Pressure sorter for fibre suspensions
FR2706495B1 (en) * 1993-06-16 1995-09-08 Lamort E & M Rotor for hydrodynamic purification under pressure of paper pulp, and device provided with this rotor.
US5566833A (en) * 1995-01-25 1996-10-22 Hermannfinckh Maschinenfabrik Gmbh & Co. Pressure sorter for fiber suspensions as well as a process for the preparation of fiber suspensions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712715A1 (en) * 1977-03-23 1978-09-28 Finckh Maschf SORTER FOR FIBER SUSPENSIONS
DE2712749A1 (en) * 1977-03-23 1979-02-08 Finckh Maschf SORTER FOR SITING FIBER SUSPENSIONS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB254068A (en) * 1925-05-23 1926-07-01 Samuel Milne Improvements in or relating to mechanical screens, strainers and the like
DE3006482C2 (en) * 1980-02-21 1983-04-14 J.M. Voith Gmbh, 7920 Heidenheim Rotary sorter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712715A1 (en) * 1977-03-23 1978-09-28 Finckh Maschf SORTER FOR FIBER SUSPENSIONS
DE2712749A1 (en) * 1977-03-23 1979-02-08 Finckh Maschf SORTER FOR SITING FIBER SUSPENSIONS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Hütte, des Ingenieurs Taschenbuch, 28. Aufl., Bd. I, Berlin: Verlag von Wilhelm Ernst & Sohn, 1955, S. 793-799 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005807A1 (en) * 1988-11-17 1990-05-31 Sunds Defibrator Industries Aktiebolag Screening device
AU621941B2 (en) * 1988-11-17 1992-03-26 Sunds Defibrator Industries Aktiebolag Screening device
WO2012084562A1 (en) 2010-12-22 2012-06-28 Voith Patent Gmbh Pressure screen
DE102010063891A1 (en) 2010-12-22 2012-06-28 Voith Patent Gmbh pressure screens
DE102011079230A1 (en) 2011-07-15 2013-01-17 Voith Patent Gmbh pressure screens
WO2013010755A1 (en) 2011-07-15 2013-01-24 Voith Patent Gmbh Pressure screen
DE102011089108A1 (en) 2011-12-20 2013-06-20 Voith Patent Gmbh Multipart rotor blade for rotationally symmetric rotor of pressurized sorting machine for cleaning of fibrous material suspension, has wire element surrounding rotor, where parts of blade are interconnected by joint and fastened to rotor
DE102012220330A1 (en) 2012-11-08 2014-05-08 Voith Patent Gmbh Pressure screen for cleaning paper pulp suspension in wet sieving, has rotor which is provided with blades-gap plane that is extended along facing side portion of screen element, and that is provided with ridges
DE102013216433A1 (en) 2013-08-20 2015-03-12 Voith Patent Gmbh pressure screens
US9855585B2 (en) 2013-08-20 2018-01-02 Voith Patent Gmbh Pressure screen
DE202015009033U1 (en) 2015-06-03 2016-07-17 Voith Patent Gmbh pressure screens
WO2020193003A1 (en) 2019-03-26 2020-10-01 Voith Patent Gmbh Pressure screen, screen element and method for manufacturing a screen element

Also Published As

Publication number Publication date
ATE56765T1 (en) 1990-10-15
EP0275921A2 (en) 1988-07-27
EP0275921A3 (en) 1989-02-22
ES2018303B3 (en) 1991-04-01
DE3701669C2 (en) 1989-12-14
DE3860609D1 (en) 1990-10-25
EP0275921B1 (en) 1990-09-19

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