CN104619912A - Fibre sorting system - Google Patents
Fibre sorting system Download PDFInfo
- Publication number
- CN104619912A CN104619912A CN201380046886.7A CN201380046886A CN104619912A CN 104619912 A CN104619912 A CN 104619912A CN 201380046886 A CN201380046886 A CN 201380046886A CN 104619912 A CN104619912 A CN 104619912A
- Authority
- CN
- China
- Prior art keywords
- rotor blade
- rotation
- equipment
- blade
- jet
- 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
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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
- D21D5/22—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a vertical axis
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D99/00—Subject matter not provided for in other groups of this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a device for removing long fibres from a fibrous suspension, comprising at least one rotor (1) having rotor blades (2), in which device a jet (3) of the fibrous suspension is directed onto the rotor blades (2) of the rotor (1), the direction of the jet forms an angle of less than 45 degrees in conjunction with the axis of rotation (4), the rotor blades (2) have a blade edge (6) oriented in the direction of rotation (5), and collecting chambers (7) are arranged in the spinning region of the rotor blades (2) for the longer fibres that are spun off by the rotor blades (2). A most efficient rotor design should be achieved by ensuring that the surface covered by the rotor blades (2) is 3 to 15 times greater than the entire surface of all the rotor blades (2) in the rotation plane (8) and/or that the distance between the rotor blades (2) is 3 to 15 times greater than the width of the rotor blades in the rotation plane (8) over at least 50% of the radial extension of the rotor blades (2).
Description
The present invention relates to a kind of for removing long stapled equipment from fibrous suspension, it has the rotor that at least one possesses multiple rotor blade, wherein, the jet of fibrous suspension is towards the rotor blade of described rotor, jet direction and rotation form the angle being less than 45 °, described rotor blade has the blade edge pointed to along direction of rotation, and throws away in region the centrifugal of described rotor blade the more long stapled collecting chamber be mounted with for throwing away from described rotor blade.
This equipment by advance disclosed document DE 10 2,011 076 518.2 is unknown, but wherein rotor blade structure and unsatisfactory.
When being prepared the fibrous suspension made new advances by timber or when reclaim paper be converted into fibrous suspension time, usual fiber has the length of very different., shorter cellulose fibre is separated relative to longer cellulose fibre thereupon advantageously, mainly may be used for the paper manufacturing different quality.Usually the target realized at this is, obtain the short fiber component comprising most staple fibre on the one hand, the average length of this staple fibre is the order of magnitude of below millimeter, and obtain on the other hand and comprise most long stapled long fiber fraction, this long stapled average length is the order of magnitude of below 1.5mm.
Comprise long fiber and can not be such as significant equally containing the acquisition of long fiber fraction of mineral matter.
But in most cases, this device is used for making old paper fibrous raw material so regenerate, it is made can be again used to manufacture fibrous web as raw material.
The old paper of mixing is usually made up of variety classes, and has relatively wide fiber length ranges compared with fresh stock.
For this reason known by document DE 2018510, fibrous suspension is sprayed on sieve, but wherein sieve aperture is easily blocked.
Therefore advise in document WO 01/29297, screening part passes through from nozzle is other.At this, the line that screening part is extended by the moving direction along sieve or other material are formed.Nozzle is positioned at beyond the drag area of screening part.
But it is also not satisfied in grading effect.
In classification process, achieve optimization by document WO 2010/018120, wherein columniform screening part has the classification gap be made up of multiple bar.But, relatively high for making classification gap keep common manufacture to expend with energy requirement by cleaning nozzle.
When the undesirable composition in fibrous suspension being removed by cleaning, it is also similar situation.
According to the present invention, the definition of fibrous suspension also extends to the fibrous process water and waste water of bag, and wherein fiber has the prospect be recovered.
Therefore technical problem to be solved by this invention is, provides low wearing and tearing and efficient rotor structure.
According to the present invention, described technical problem so solves, that is, in Plane of rotation by large 3 to 15 times of the gross area of all rotor blades of area ratio that rotor blade is inswept, especially large 5 to 10 times.
Alternatively or additionally, described technical problem also can so solve, that is, in the radial extended distance of more than 50% of rotor blade, and large 3 to 15 times of the width of the gap ratio rotor blade between Plane of rotation internal rotor blade, especially large 5 to 10 times.
By this way, in the stability and ABRASION RESISTANCE of rotor blade, achieve such optimization, namely obtained the long fiber in fibrous suspension by rotor blade as far as possible widely, and process fibrous suspension as far as possible in large quantities.
Although the further expansion of the rotor blade in Plane of rotation improves its stability, also limit flow.At this especially advantageously, the circumferential speed of rotating vane is made great efforts to make to bring up to 10 to 70, preferably between 20 to 40m/s.
At this, blade edge should contribute to catching, collecting long fiber fraction, and is thrown away in collecting chamber.Therefore advantageously, rotor blade has the thickness of 0.2 to 2mm, preferably 0.3 to 0.7mm transverse to Plane of rotation.
In order to the staple fibre and filler that ensure fibrous suspension as far as possible successfully flow through rotor blade, advantageously, rotor blade have smooth, preferably by profile that longer side extends along direction of rotation.
Also advantageously, rotor blade has the width of 0.5 to 5mm, preferably 1 to 3mm in Plane of rotation, and/or the spacing in Plane of rotation between two adjacent rotor blades is between 5 to 25mm, preferably between 10 to 15mm, and/or rotor blade has the length of 5 to 30mm, preferably 10 to 20mm.
Regardless of the structural design of rotor blade, can so impel long stapledly radially derives, until be thrown out of along blade edge, namely, blade edge at least one, preferably at least relative to the section of outermost radial outside in be in reverse to direction of rotation and radially outward extend obliquely, wherein, the angle between the angled section of blade edge and radial direction is between 30 to 70 °, preferably between 55 to 65 °.
When the leading edge of rotor blade is not sharp, but when there is the rounding such as by electrobrightening generation to a certain degree, just further increase the function of rotor blade.
If to make only long fiber to be left in most cases on rotor blade and radially outward slide on rotor blade and be thrown out of therefrom, radius on blade edge just should than thickness 10% large of rotor blade transverse to Plane of rotation, and/or the roughness R of rotor blade at least in blade edge region
abelow 1 μm.
In uniform as far as possible structural design advantageously, the jet direction of fibrous suspension jet is roughly parallel to the rotation extension of rotor.
At this advantageously, described jet by the nozzle that makes jet accelerate by towards rotor blade.This acceleration makes fiber streamwise directed, and this contributes to obtaining long fiber by rotor blade.
In addition be proved to be advantageously, the speed of fibrous suspension jet is between 3 to 20m/s when contacting rotor blade.Guarantee by this way, only long fiber is stayed on rotor blade as far as possible, wherein, removed long stapled share can be increased by the circumferential speed improving rotor blade.
Long stapledly radially outward derive to not affect and throw away, fibrous suspension jet just should at least the overwhelming majority, preferably completely only extend on the radially inner side region of rotor blade.
When fibrous suspension jet have annular, around the cross section of the rotor axis of rotor time, especially can realize the full use of rotor blade.At this advantageously, the jet of circular fiber suspension has the ring thickness between 1 to 5mm.
In addition, the spacing between nozzle and rotor blade should be less than 20mm, is preferably less than 10mm, is especially less than 5mm.
By the less spacing between jet expansion and rotor blade, the orientation of the fiber streamwise be enhanced because the jet in nozzle accelerates can be remained unchanged as much as possible, until contact rotor blade.
Because the danger of blocking is less, the present invention be also applicable to process density of material up to 3.5%, preferably up to 3.5% fibrous suspension.
The present invention is set forth further below in conjunction with embodiment.In the accompanying drawings:
Fig. 1 illustrates the generalized section of screening plant;
Fig. 2 illustrates the top view of the rotor 1 with rotor blade 2;
Fig. 3 illustrates the partial view according to Fig. 2; With
Fig. 4 illustrates the partial sectional view of rotor blade 2.
See from Fig. 1, in order to mainly comprise more long stapled long fiber fraction from for the manufacture of isolating in the fibrous suspension of paper web in screening plant, on the profile piece 10 of central authorities being arranged in nozzle, form the fibrous suspension jet 3 of annular, and point to the rotor blade 2 of rotor 1.
In fault or when shutting down, the gap limited between the nozzle body 11 of the outer boundaries of jet 3 and profile piece 10 increases.This can realize simply by nozzle body 11 is in reverse to the movement of flow direction in the embodiment shown in fig. 1.
This will be avoided fiber clogs gap.
Profile piece 10 improves the flowing velocity of fibrous suspension and in the orientation this enhancing fiber streamwise, this is conducive to rotor blade 2 to long stapled acquisition.In order to not lose the orientation of fiber sharp, jet 3 is only 5mm from the distance between the injection position and rotor blade 2 of nozzle.
Rotor 1 is driven by the motor below being placed at this.At this, the jet direction of fibrous suspension jet 3 is consistent with the direction of the rotor axis 4 of rotor 1, and wherein, the speed of fibrous suspension jet 3 is in 3 to 20m/s when contacting rotor blade 2, and the circumferential speed of rotor blade 2 is in 20 to 40m/s.If wish the long fiber being isolated higher share by rotor blade 2, then to improve the circumferential speed of rotor blade 2 for this reason.
Fibrous suspension jet 3 through time, the overwhelming majority comparatively long fiber is left and hangs on rotor blade 2.These long fibers can be collected in this place, and outside migration is also thrown out of subsequently due to the centrifugal force on rotor blade 2.
Can not affect fibrous suspension jet 3 to throw away described in making, then fibrous suspension jet 3 only points to the radial inside portion of rotor blade 2, and wherein, ring thickness is between 1 to 5mm, and rotor blade 2 has the length of 10 to 20mm.
In addition, the rotor of subsidiary rotor blade 2 covers the disc of diameter between 300 to 1500mm, and this combines the flowing velocity be enhanced and also helps and realize sufficiently high production capacity in the fibrous suspension jet 3 of annular.
Because the fibrous suspension jet of annular 3 and rotation 4 are arranged coaxially, so have better and uniform effect.
In order to collect fiber (long fiber fraction) that is longer, that throw away from rotor blade 2, collecting chamber 7 extends around rotor 1 centrifugal throwing away in region accordingly.Remaining fibrous suspension is collected through in rotor blade 2 and collecting pit 12 below and derives.
Catch long stapled to impel when fibrous suspension jet 3 flows through, rotor blade 2 has roughness R
abe the surface of the electrobrightening of less than 1 μm and the thickness D between 0.3 to 0.7mm transverse to Plane of rotation 8.
In addition, rotor blade 2 has a cross-sectional profiles that is smooth, that extend along direction of rotation 5 as shown in Figure 4, and wherein, the radius R of the blade edge 6 pointed to along direction of rotation 5 is than thickness D 10% large of rotor blade 2.
In simple especially embodiment, rotor 1 can be made up of sheet material as shown in Figure 2 together with its rotor blade 2.
At this substantially as can be seen from the detailed view of Fig. 3, the blade edge 6 pointing to direction of rotation 5 is in reverse to direction of rotation 5 and radially outward extends obliquely with the angle 9 of 55 to 65 ° relative to radial direction.This contributes to long fiber and outwards slides along blade edge 6.
At this, the width of rotor blade 2 is in Plane of rotation 8 between 1 to 3mm, and the spacing in Plane of rotation of two adjacent rotor blades 2 is between 10 to 15mm.
Enough stability in order to ensure rotor blade 2 and the enough large Free Planar for suspension jet 3, by large 5 to 10 times of the gross area of all rotor blades of area ratio 2 that rotor blade 2 is inswept in Plane of rotation 8.In addition, for the same reason in more than at least 50% extended distance of rotor blade 2, large 2.5 to 10 times of the width of this rotor blade 2 in Plane of rotation 8 of the gap ratio between adjacent rotor blades 2.
In a preferred embodiment, multiplely common axis of rotation line 4 also jointly being driven thus can also be used according to screening plant of the present invention.At this, screening plant can be run in series or in parallel.
Rotor 1 structure be made up of multiple part is also favourable.
Claims (18)
1. one kind for removing long stapled equipment from fibrous suspension, described equipment has at least one rotor possessing multiple rotor blade (2) (1), wherein, the jet (3) of fibrous suspension points to the rotor blade (2) of described rotor (1), jet direction and rotation (4) form the angle being less than 45 °, described rotor blade (2) has the blade edge (6) pointed to along direction of rotation (5), and throw away in region the centrifugal of described rotor blade (2) the more long stapled collecting chamber (7) be mounted with for throwing away from described rotor blade (2), it is characterized in that, by large 3 to 15 times of the gross area of the inswept all rotor blades of area ratio (2) of described rotor blade (2) in Plane of rotation (8).
2. equipment as claimed in claim 1, is characterized in that, by large 5 to 10 times of the gross area of the inswept all rotor blades of area ratio (2) of described rotor blade (2) in described Plane of rotation (8).
3. the one especially as described in one of aforementioned claim is used for from fibrous suspension, remove long stapled equipment, it has at least one rotor possessing multiple rotor blade (2) (1), wherein, the jet (3) of fibrous suspension points to the rotor blade (2) of described rotor (1), jet direction and rotation (4) form the angle being less than 45 °, described rotor blade (2) has the blade edge (6) pointed to along direction of rotation (5), and throw away in region the centrifugal of described rotor blade (2) the more long stapled collecting chamber (7) be mounted with for throwing away from described rotor blade (2), it is characterized in that, in the more than at least 50% radial extended distance of described rotor blade (2), large 3 to 15 times of the width of rotor blade (2) described in the gap ratio in Plane of rotation (8) between described rotor blade (2).
4. equipment as claimed in claim 3, it is characterized in that, in the more than at least 50% radial extended distance of described rotor blade (2), large 5 to 10 times of the width of rotor blade (2) described in the gap ratio in described Plane of rotation (8) between described rotor blade (2).
5. the equipment as described in one of aforementioned claim, is characterized in that, described blade edge (6) radially outward at least one, be preferably in reverse to direction of rotation (5) relative to radial direction at least outermost section and extend obliquely.
6. equipment as claimed in claim 5, it is characterized in that, the angle (9) between the angled section of described blade edge (6) and radial direction is between 30 to 70 °, preferably between 55 to 65 °.
7. the equipment as described in one of aforementioned claim, is characterized in that, described rotor blade (2) has the width of 0.5 to 5mm, preferably 1 to 3mm in described Plane of rotation (8).
8. the equipment as described in one of aforementioned claim, is characterized in that, the spacing between interior two the adjacent rotor blades (2) of described Plane of rotation (8) is between 5 to 25mm, preferably between 10 to 15mm.
9. the equipment as described in one of aforementioned claim, is characterized in that, described rotor blade (2) has the length of 5 to 30mm, preferably 10 to 20mm.
10. the equipment as described in one of aforementioned claim, is characterized in that, described rotor blade (2) has the thickness of 0.2 to 2mm, preferably 0.3 to 0.7mm transverse to described Plane of rotation (8).
11. equipment as described in one of aforementioned claim, is characterized in that, the radius (R) on described blade edge (6) be greater than described rotor blade (2) transverse to described Plane of rotation (8) thickness 10%.
12. equipment as described in one of aforementioned claim, is characterized in that, the roughness R of described rotor blade (2) at least in described blade edge (6) region
abelow 1 μm.
13. equipment as described in one of aforementioned claim, is characterized in that, described rotor blade (2) have smooth, preferably along the profile that direction of rotation (5) extends.
14. equipment as described in one of aforementioned claim, is characterized in that, described rotor blade (2), especially its blade edge (6) are by electrobrightening.
15. equipment as described in one of aforementioned claim, is characterized in that, that the jet (3) of described fibrous suspension is designed to annular and directed coaxially with described rotor (1).
16. equipment as claimed in claim 15, is characterized in that, the jet direction of the jet (3) of described fibrous suspension is roughly parallel to rotation (4) extension of described rotor (1).
17. equipment as described in claim 15 or 16, is characterized in that, the directed described rotor blade (2) of nozzle that described jet (3) accelerates by making described jet (3).
18. equipment as claimed in claim 17, it is characterized in that, the spacing between described nozzle and described rotor blade (2) is less than 20mm, is preferably less than 10mm, is especially less than 5mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012215964.9 | 2012-09-10 | ||
| DE201210215964 DE102012215964A1 (en) | 2012-09-10 | 2012-09-10 | fiber screening |
| PCT/EP2013/066563 WO2014037178A1 (en) | 2012-09-10 | 2013-08-07 | Fibre sorting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104619912A true CN104619912A (en) | 2015-05-13 |
| CN104619912B CN104619912B (en) | 2017-06-09 |
Family
ID=48979735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380046886.7A Expired - Fee Related CN104619912B (en) | 2012-09-10 | 2013-08-07 | Fibre fractionation equipment |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2893078B1 (en) |
| CN (1) | CN104619912B (en) |
| DE (1) | DE102012215964A1 (en) |
| WO (1) | WO2014037178A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112969828A (en) * | 2018-11-08 | 2021-06-15 | 福伊特专利有限公司 | Rotor for a heating unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427541A (en) * | 1982-04-28 | 1984-01-24 | Wisconsin Alumni Research Foundation | Method and apparatus for spray fractionation of particles in liquid suspension |
| CN87102561A (en) * | 1986-04-11 | 1987-12-30 | 美商贝洛特公司 | rotary separator |
| CN1040254A (en) * | 1988-08-08 | 1990-03-07 | 高信光 | Divergent-centrifugal impeller and rotating machinery thereof |
| EP0457507A1 (en) * | 1990-05-09 | 1991-11-21 | Wisconsin Alumni Research Foundation | Spray fractionation disks and method of using the same |
| CN1878617A (en) * | 2003-11-14 | 2006-12-13 | 阿克佐诺贝尔公司 | Separation apparatus and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE339165B (en) | 1969-04-22 | 1971-09-27 | Calor & Sjoegren Ab | |
| SE444962B (en) * | 1985-07-08 | 1986-05-20 | Kamyr Ab | DEVICE FOR SEPARATION OF NON-REQUIRED PARTICLES IN A FIBER MASS |
| AU1313001A (en) | 1999-10-20 | 2001-04-30 | Auckland Uniservices Limited | A method of fibre separation |
| EP2324154A2 (en) | 2008-08-11 | 2011-05-25 | Voith Patent GmbH | Arrangement for fractionating a suspension of fibrous material |
| DE102011076518A1 (en) * | 2011-05-26 | 2012-11-29 | Voith Patent Gmbh | fiber screening |
-
2012
- 2012-09-10 DE DE201210215964 patent/DE102012215964A1/en not_active Withdrawn
-
2013
- 2013-08-07 WO PCT/EP2013/066563 patent/WO2014037178A1/en active Application Filing
- 2013-08-07 CN CN201380046886.7A patent/CN104619912B/en not_active Expired - Fee Related
- 2013-08-07 EP EP13748013.3A patent/EP2893078B1/en not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427541A (en) * | 1982-04-28 | 1984-01-24 | Wisconsin Alumni Research Foundation | Method and apparatus for spray fractionation of particles in liquid suspension |
| CN87102561A (en) * | 1986-04-11 | 1987-12-30 | 美商贝洛特公司 | rotary separator |
| CN1040254A (en) * | 1988-08-08 | 1990-03-07 | 高信光 | Divergent-centrifugal impeller and rotating machinery thereof |
| EP0457507A1 (en) * | 1990-05-09 | 1991-11-21 | Wisconsin Alumni Research Foundation | Spray fractionation disks and method of using the same |
| CN1878617A (en) * | 2003-11-14 | 2006-12-13 | 阿克佐诺贝尔公司 | Separation apparatus and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112969828A (en) * | 2018-11-08 | 2021-06-15 | 福伊特专利有限公司 | Rotor for a heating unit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2893078B1 (en) | 2016-12-14 |
| WO2014037178A1 (en) | 2014-03-13 |
| CN104619912B (en) | 2017-06-09 |
| DE102012215964A1 (en) | 2014-03-13 |
| EP2893078A1 (en) | 2015-07-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20190807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |