ATE181120T1 - PRESSURE SORTER FOR SORTING FIBER SUSPENSIONS AND SCREEN FOR SUCH A PRESSURE SORTER - Google Patents

PRESSURE SORTER FOR SORTING FIBER SUSPENSIONS AND SCREEN FOR SUCH A PRESSURE SORTER

Info

Publication number
ATE181120T1
ATE181120T1 AT95907639T AT95907639T ATE181120T1 AT E181120 T1 ATE181120 T1 AT E181120T1 AT 95907639 T AT95907639 T AT 95907639T AT 95907639 T AT95907639 T AT 95907639T AT E181120 T1 ATE181120 T1 AT E181120T1
Authority
AT
Austria
Prior art keywords
suspension
shaft
sieve
circumference
rotor
Prior art date
Application number
AT95907639T
Other languages
German (de)
Inventor
Jochen Gustav Pfeffer
Erich Czerwoniak
Original Assignee
Finckh Maschf
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 Finckh Maschf filed Critical Finckh Maschf
Priority claimed from EP95907639A external-priority patent/EP0805890B1/en
Application granted granted Critical
Publication of ATE181120T1 publication Critical patent/ATE181120T1/en

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
    • 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
    • D21D5/16—Cylinders and plates for screens

Abstract

A sieve, for sorting a fibre suspension in pressure sorting machines with a rotating rotor, is formed as a symmetrical cylinder about a shaft and it has, to sort the suspension, an inflow and an opposite outflow side. The rotor has, extending around its circumference and for generating positive and negative pressure pulses in the suspension, revolving profiled pieces approaching the inflow side. On the sieve inflow side round its circumference are grooves running parallel to the shaft, where at least one passage opens into each and where each has a floor, a front and a rear wall as viewed from the rotation direction of the profiled pieces. The passage opens into the floor and the front wall is more steeply tilted, i.e. at an angle between 40 and 70 deg., w.r.t. sieve circumference than the rear. In a section right angles to the shaft (34) the groove (400) has a V-shaped cross-section. Also claimed is a sorter with a casing and the fixed sieve separating an enclosed flow space from an outer product chamber. Together with inflow side, the rotor rotating outer surface bounds the flow space which, along the shaft, has an inlet for the suspension at one end and a waste outlet at the other. The profiled pieces each have a forward lying first side-piece for driving the suspension forwards and behind it a second piece lying in the opposite direction for sucking fluid back from the outer chamber.
AT95907639T 1995-02-03 1995-02-03 PRESSURE SORTER FOR SORTING FIBER SUSPENSIONS AND SCREEN FOR SUCH A PRESSURE SORTER ATE181120T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95907639A EP0805890B1 (en) 1995-02-03 1995-02-03 Fibre suspension pressure sorting machine and sieve for such pressure sorting machines

Publications (1)

Publication Number Publication Date
ATE181120T1 true ATE181120T1 (en) 1999-06-15

Family

ID=8222222

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95907639T ATE181120T1 (en) 1995-02-03 1995-02-03 PRESSURE SORTER FOR SORTING FIBER SUSPENSIONS AND SCREEN FOR SUCH A PRESSURE SORTER

Country Status (2)

Country Link
EP (1) EP0905309B1 (en)
AT (1) ATE181120T1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304621B4 (en) * 2003-02-05 2005-04-28 Voith Paper Patent Gmbh Method for determining rheological properties of a pulp suspension
SE526033C3 (en) 2003-11-06 2009-12-08 Metso Paper Inc Screening device and strainer for screening of pulp suspensions

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI67588C (en) * 1983-01-26 1985-04-10 Ahlstroem Oy SILPLAOT
DE3940334A1 (en) * 1989-12-06 1991-06-13 Finckh Maschf SCREEN FOR PRINT SORTING FOR FIBER SUSPENSIONS
DE4121896A1 (en) * 1991-07-02 1993-01-07 Fiedler Heinrich Gmbh SCREEN ELEMENT

Also Published As

Publication number Publication date
EP0905309B1 (en) 2001-11-28
EP0905309A2 (en) 1999-03-31
EP0905309A3 (en) 1999-05-19

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Legal Events

Date Code Title Description
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