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 SORTERInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Combined Means For Separation Of Solids (AREA)
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.
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)
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)
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 |
-
1995
- 1995-02-03 EP EP98122514A patent/EP0905309B1/en not_active Expired - Lifetime
- 1995-02-03 AT AT95907639T patent/ATE181120T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0905309B1 (en) | 2001-11-28 |
EP0905309A3 (en) | 1999-05-19 |
EP0905309A2 (en) | 1999-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |