EP0410102B1 - Sortierer - Google Patents

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Publication number
EP0410102B1
EP0410102B1 EP90109711A EP90109711A EP0410102B1 EP 0410102 B1 EP0410102 B1 EP 0410102B1 EP 90109711 A EP90109711 A EP 90109711A EP 90109711 A EP90109711 A EP 90109711A EP 0410102 B1 EP0410102 B1 EP 0410102B1
Authority
EP
European Patent Office
Prior art keywords
rotor
max
arcs
sieve basket
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90109711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0410102A2 (de
EP0410102A3 (en
Inventor
Peter Schweiss
Reimund Rienecker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0410102A2 publication Critical patent/EP0410102A2/de
Publication of EP0410102A3 publication Critical patent/EP0410102A3/de
Application granted granted Critical
Publication of EP0410102B1 publication Critical patent/EP0410102B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/20—Stationary drums with moving interior agitators
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils

Definitions

  • the invention relates to a sorter according to the preamble of claim 1.
  • a sorter is known from US-A-3 680 696.
  • the circular arcs arranged offset from one another alone form the rotor contour without a transition piece in between.
  • Sorters with such sieve baskets essentially have the task of removing disruptive components of fiber suspensions, e.g. to remove light, floating impurities, such as plastic films and the like, heavy components, such as sand, broken glass, pieces of wood and iron parts of an essentially small type, such as paper clips, pieces of wire and the like. This takes place in that, by suitable dimensioning of the perforation of the sieve or the slot width of the sieve or sieve basket, only the good fibers or fiber bundles as far as possible enter an accepting material space.
  • the object of the invention is to provide a rotor which, with good sorting efficiency, causes only slight strain on the screen basket.
  • the screen basket is designated 1 and the rotor 2.
  • the suspension is fed into the housing 3 via the inlet connection 5, and the sorted-out waste material is discharged from the waste-material chamber 6 through outlet connection 8 and the remainder of the suspension is removed via connecting piece 9.
  • the rotor drive is indicated at 12, which drives the rotor via the shaft 11 outlined.
  • the circumference of the rotor 2 is composed in cross section, that is to say in sections perpendicular to the rotor axis or rotor shaft 11, from circular arcs with the radius R r , which are connected to one another here by a straight connecting piece.
  • a value in the range between 15 and 45 mm should preferably be selected for the value f min .
  • the eccentricity E is preferably between 4 and 10 mm.
  • Such a rotor according to the invention can attain a maximum rotational speed of 1400 rpm with a sieve diameter of 500 mm, which corresponds to a peripheral speed of approximately 35 m / s. There is a good sorting effect with low power consumption of the rotor.
  • the strainer strain is relatively small.
  • FIG. 3 also shows the cross section of a rotor according to the invention, the circumference of which is composed essentially of three circular arcs spaced apart at equal angular intervals.
  • Rotors with two to four circular arcs forming the circumference of the rotor are preferably used. Of course, this depends on the size of the sorter or the diameter of the screen basket.
  • the rotor is characterized by a flat undulating surface with respect to a fixed reference point, which is moved past the screen basket at high speed or speed.
  • f max is the theoretical maximum distance of the common tangent of neighboring arcs; in this area, i.e. at the point of half the angular distance of the points with the smallest rotor distance, the actual distance f max may be about 15% greater, for example, where the rotor surface is designed to correspond to a common secant.
  • Arc-shaped, concave connecting pieces between the circular arcs (cylinder sections) and an overall approximation by an ellipse (for the rotor with two circular arches or cylinder sections) are also possible, with a deviation from the theoretical circular radius R r of at most 10%.
  • the actual maximum distance of the rotor surface from the screen basket 1 should be at most 1.15f max - i.e. 1.15 times the theoretical maximum distance f max if the rotor contour consists of arcs and common tangents of adjacent arcs (or cylinder sections and tangential, flat planes) connecting them Surfaces) is formed, - preferably (1 + 0.2 / n) f Max be.
  • the base radius R s1 - for a screen basket or sorter with minimal dimensions - is approximately 250 - 270 mm.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Noodles (AREA)
  • Eye Examination Apparatus (AREA)
  • Cell Separators (AREA)
  • Filtration Of Liquid (AREA)
  • Optical Communication System (AREA)
  • Centrifugal Separators (AREA)
  • Water Treatment By Sorption (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Cyclones (AREA)
EP90109711A 1989-07-28 1990-05-22 Sortierer Expired - Lifetime EP0410102B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925020A DE3925020A1 (de) 1989-07-28 1989-07-28 Sortierer
DE3925020 1989-07-28

Publications (3)

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

Family

ID=6386045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109711A Expired - Lifetime EP0410102B1 (de) 1989-07-28 1990-05-22 Sortierer

Country Status (11)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123112A1 (de) * 1991-07-12 1993-01-21 Voith Gmbh J M Drucksortierer
DE4133562A1 (de) * 1991-10-10 1993-04-22 Voith Gmbh J M Walze mit biegungsausgleich
DE19911884A1 (de) * 1999-03-17 2000-09-21 Voith Sulzer Papiertech Patent Drucksortierer zum Sieben einer Papierfaserstoffsuspension und Siebräumer für einen solchen
DE102012013642B4 (de) * 2012-07-09 2020-12-24 Thermo Electron Led Gmbh Zentrifugengefäßeinheit

Family Cites Families (8)

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

Also Published As

Publication number Publication date
CA2022164C (en) 1996-10-22
EP0410102A2 (de) 1991-01-30
ES2057267T3 (es) 1994-10-16
ATE109530T1 (de) 1994-08-15
KR910002522A (ko) 1991-02-25
DE3925020A1 (de) 1991-01-31
US5045183A (en) 1991-09-03
CA2022164A1 (en) 1991-01-29
BR9003471A (pt) 1991-08-27
DK0410102T3 (da) 1994-08-29
JPH0364591A (ja) 1991-03-19
FI903781A0 (fi) 1990-07-27
DE3925020C2 (enrdf_load_stackoverflow) 1991-06-27
FI93318B (fi) 1994-12-15
EP0410102A3 (en) 1991-07-31
FI93318C (fi) 1995-03-27

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