CN104619912B - Fibre fractionation equipment - Google Patents
Fibre fractionation equipment Download PDFInfo
- Publication number
- CN104619912B CN104619912B CN201380046886.7A CN201380046886A CN104619912B CN 104619912 B CN104619912 B CN 104619912B CN 201380046886 A CN201380046886 A CN 201380046886A CN 104619912 B CN104619912 B CN 104619912B
- Authority
- CN
- China
- Prior art keywords
- rotor blade
- equipment
- rotor
- rotation
- blade
- 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 - Fee Related
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
- D21D5/18—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 present invention relates to one kind for removing long stapled equipment from fibrous suspension, it has at least one rotor (1) for possessing multiple rotor blades (2), wherein, the jet (3) of fibrous suspension points to the rotor blade (2) of the rotor (1), jet direction makes up less than 45 ° of angle with rotation axis (4), the rotor blade (2) is with the blade edge (6) pointed to along direction of rotation (5), and the collecting chamber (7) being mounted with region for the longer fibers thrown away from the rotor blade (2) is thrown away in the centrifugation of the rotor blade (2).In order to realize efficient rotor structure as far as possible, specify herein, it is bigger 3 to 15 times than the gross area of all rotor blades (2) by the inswept area of the rotor blade (2) in Plane of rotation (8), and/or the rotor blade (2) the amount of radially extending at least more than 50% elongation in, the width of rotor blade (2) is big 3 to 15 times described in the gap ratio between the rotor blade (2) in Plane of rotation (8).
Description
The present invention relates to one kind for removing long stapled equipment from fibrous suspension, it has at least one to possess many
The rotor of individual rotor blade, wherein, the jet of fibrous suspension towards the rotor rotor blade, jet direction and rotary shaft
Line makes up less than 45 ° of angle, and the rotor blade has the blade edge pointed to along direction of rotation, and in the rotor leaf
The centrifugation of piece throws away the collecting chamber being mounted with region for the longer fibers thrown away from the rotor blade.
This equipment by not in advance disclosed document DE 10 2,011 076 518.2, it is known that still its rotor blade shown
It is structure and unsatisfactory.
When new fibrous suspension is prepared by timber or when the paper for reclaiming is converted into fibrous suspension, lead to
Normal fiber has the length of very different.Therewith advantageously, by shorter cellulose fibre relative to cellulose fiber more long
Dimension is separated, and primarily can be used for manufacturing the paper of different quality.Generally it is on the one hand to be wrapped in this target realized
Short fiber component containing most chopped fibers, the average length of the chopped fiber is the order of magnitude below millimeter, and the opposing party
Face obtains and includes most long stapled long fiber fractions, and the long stapled average length is the order of magnitude of below 1.5mm.
The acquisition of comprising the long fibre and for example long fiber fraction without mineral matter equally can be with meaningful.
But in most cases, this device is used to make old paper fiber raw material so regenerate so that it can be with as raw material
Again be used to manufacture fibrous web.
The old paper of mixing is usually made up of variety classes, and has relatively wide fibre length compared with fresh stock
Scope.
It is this by document DE 2018510, it is known that 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 side.Here, screening part is by along sieve
The line or other materials that moving direction extends are constituted.Nozzle is located at beyond the drag area of screening part.
But it is also unsatisfactory in terms of grading effect.
Optimization is realized in terms of classification process by document WO 2010/018120, wherein the screening part of cylinder has
The classification gap being made up of multiple bars.But, for making classification gap keep common manufacture to expend and energy by cleaning nozzle
Amount demand is of a relatively high.
It is also similar situation when to be removed the undesirable composition in fibrous suspension by cleaning.
According to the present invention, the definition of fibrous suspension also extends into the fibrous process water of bag and waste water, and wherein fiber has
The prospect being recovered.
Therefore the technical problems to be solved by the invention are to provide low abrasion and efficient rotor structure.
According to the present invention, the technical problem is so solved, i.e. by area ratio that rotor blade is inswept in Plane of rotation
The gross area of all rotor blades is big 3 to 15 times, especially big 5 to 10 times.
Alternatively or additionally, the technical problem can also be solved so, i.e. in more than the 50% of rotor blade radial direction
In extended distance, the width of the gap ratio rotor blade between Plane of rotation internal rotor blade is big 3 to 15 times, especially big 5 to
10 times.
By this way, such optimization is realized in terms of the stability and wearability of rotor blade, i.e., by rotor
Blade obtains the long fibre in fibrous suspension as broadly as possible, and processes fibrous suspension in large quantities as far as possible.
Although the further expansion of the rotor blade in Plane of rotation improve its stability, but also limit flow.
Herein it is particularly advantageous that effort makes the circumferential speed of rotating vane bring up between 10 to 70, preferably 20 to 40m/s.
Here, blade edge should contribute to capture, collect long fiber fraction, and thrown away to collecting chamber.Therefore have
Profit, 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 chopped fiber and filler that ensure fibrous suspension successfully flow through rotor blade as far as possible, it is advantageous to
Rotor blade has profile that is flat, preferably extending side more long along direction of rotation.
It is further advantageous that rotor blade width with 0.5 to 5mm, preferably 1 to 3mm in Plane of rotation, and/or
Spacing in Plane of rotation between two adjacent rotor blades between 5 to 25mm, preferably between 10 to 15mm, and/or
Rotor blade has the length of 5 to 30mm, preferably 10 to 20mm.
Structure design regardless of rotor blade, can so promote it is long stapled radially derive, until along blade
Edge is thrown out of, i.e. blade edge is at least in reverse to rotation side in one, the section preferably at least relative to outermost radial outside
To extending with being radially outwardly sloping, wherein, the angled section of blade edge and radially between angle between 30 to 70 °, it is excellent
Select between 55 to 65 °.
When the leading edge of rotor blade is not sharp, but can for example be produced by electrobrightening with a certain degree of
Rounding when, just further increase the function of rotor blade.
If it is desired that only long fibre has been left on rotor blade and the footpath on rotor blade in most cases
To sliding in and out and being thrown out of therefrom, the radius on blade edge just should be than rotor blade transverse to the thick of Plane of rotation
The 10% of degree is big, and/or roughness R of the rotor blade at least in blade edge regionABelow 1 μm.
In terms of structure design as uniform as possible advantageously, the jet direction of fibrous suspension jet is roughly parallel to
The rotation axis of rotor extends.
Herein advantageously, the jet by the nozzle that accelerates jet by towards rotor blade.This acceleration makes fibre
Dimension streamwise orientation, this helps to obtain long fibre by rotor blade.
In addition be proved to advantageously, the speed of fibrous suspension jet when rotor blade is contacted in 3 to 20m/s it
Between.Ensure by this way, as far as possible only stay on rotor blade long fibre, wherein, by the circumferential speed for improving rotor blade
Degree can increase removed long stapled share.
In order to do not influence it is long stapled radially outward derive and throw away, fibrous suspension jet just should at least big absolutely portion
Divide, extend preferably completely only 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 when, it is particularly possible to realize
Comprehensive utilization of rotor blade.Herein advantageously, the jet of circular fiber suspension has the ring thickness between 1 to 5mm.
Additionally, the spacing between nozzle and rotor blade should be less than 20mm, preferably smaller than 10mm, especially less than 5mm.
By the less spacing between jet expansion and rotor blade so that the quilt because the jet in nozzle accelerates
The orientation of enhanced fiber streamwise can as much as possible keep constant, until contact rotor blade.
Because the danger for blocking is smaller, it is suitable for treatment density of material is up to 3.5%, preferably of up to 3.5%
Fibrous suspension.
The present invention is expanded on further with reference to embodiments.In the accompanying drawings：
Fig. 1 shows the generalized section of screening plant；
Fig. 2 shows the top view of the rotor 1 with rotor blade 2；
Fig. 3 shows the partial view according to Fig. 2；With
Fig. 4 shows the partial sectional view of rotor blade 2.
It is seen from figure 1 that, in order to isolate main bag from the fibrous suspension for manufacturing paper web in screening plant
Long fiber fraction containing longer fibers, be arranged on the central profile piece 10 of nozzle formed annular fibrous suspension penetrate
Stream 3, and point to the rotor blade 2 of rotor 1.
In failure or shutdown, the gap limited between the nozzle body 11 and profile piece 10 of the outer boundaries of jet 3 increases
Greatly.This can be in reverse to the movement of flow direction and realize simply by nozzle body 11 in the embodiment shown in fig. 1.
This will be avoided fiber from blocking gap.
Profile piece 10 improves the flowing velocity of fibrous suspension and enhances the orientation of fiber streamwise herein,
This is conducive to rotor blade 2 to long stapled acquisition.In order to not lose the orientation of fiber, injection of the jet 3 from nozzle sharp
The distance between position and rotor blade 2 are only 5mm.
Rotor 1 is driven by motor positioned below herein.Here, the jet direction of fibrous suspension jet 3 and rotor 1
Rotor axis 4 direction it is consistent, wherein, the speed of fibrous suspension jet 3 is in 3 to 20m/ when rotor blade 2 is contacted
S, and the circumferential speed of rotor blade 2 is in 20 to 40m/s.If it is desired to passing through rotor blade 2 isolates share higher
Long fibre, then will improve the circumferential speed of rotor blade 2 for this.
When fibrous suspension jet 3 is passed through, most longer fibers are left and hang on rotor blade 2.These length
Fiber can be collected in this place, and outside migration and be then thrown out of due to the centrifugal force on rotor blade 2.
In order that described throwing away does not interfere with fibrous suspension jet 3, then fibrous suspension jet 3 is only directed to rotor blade
2 radial inside portion, wherein, ring thickness is between 1 to 5mm, and rotor blade 2 has the length of 10 to 20mm.
Additionally, the rotor of subsidiary rotor blade 2 covers disc of the diameter between 300 to 1500mm, this is in annular
Also helped with reference to the flowing velocity being enhanced in fibrous suspension jet 3 and realize sufficiently high production capacity.
Because the fibrous suspension jet 3 of annular is coaxially disposed with rotation axis 4, has preferably and uniformly imitate
Really.
In order to collect fiber (long fiber fraction) that is more long, being thrown away from rotor blade 2, collecting chamber 7 exists around rotor 1
Corresponding centrifugation throws away in region and extends.Remaining fibrous suspension is through rotor blade 2 and in following collecting pit 12
It is collected and derives.
In order to promote when fibrous suspension jet 3 flows through to long stapled capture, rotor blade 2 has roughness RAFor
The surface of less than 1 μm of electrobrightening and the thickness D between 0.3 to 0.7mm transverse to Plane of rotation 8.
Additionally, rotor blade 2 has a cross-sectional profiles that are flat, extending along direction of rotation 5 as shown in Figure 4, its
In, the radius R of the blade edge 6 pointed to along direction of rotation 5 is bigger than the 10% of the thickness D of rotor blade 2.
In particularly simple embodiment, rotor 1 can be made up of sheet material as shown in Figure 2 together with its rotor blade 2.
Herein as can be seen that the blade edge 6 for pointing to direction of rotation 5 is in reverse to rotation substantially from the detailed view of Fig. 3
Turn direction 5 to extend with being radially outwardly sloping with 55 to 65 ° of angle 9 relative to radial direction.This contributes to long fibre along blade edge
Edge 6 slides in and out.
Here, the width of rotor blade 2 is interior between 1 to 3mm in Plane of rotation 8, and two adjacent rotor blades 2
The spacing in Plane of rotation between 10 to 15mm.
Enough stability in order to ensure rotor blade 2 and the sufficiently large Free Planar for suspension jet 3,
It is bigger than the gross area of all rotor blades 25 to 10 times by the inswept area of rotor blade 2 in Plane of rotation 8.Additionally, for
Same the reason for, the gap ratio between adjacent rotor blades 2 was in rotation at least more than the 50% of rotor blade 2 extended distance
The width for turning the rotor blade 2 plane 8 Nei is big 2.5 to 10 times.
In a preferred embodiment, it is multiple to use common axis of rotation line 4 simultaneously according to screening plant of the invention
Thus also jointly driven.Here, screening plant can be run in series or in parallel.
The structure of rotor 1 being made up of some is also advantageous.
Claims (28)
1. a kind of for removing long stapled equipment from fibrous suspension, the equipment has at least one to possess multiple rotors
The rotor (1) of blade (2), wherein, the jet (3) of fibrous suspension points to the rotor blade (2) of the rotor (1), jet side
Make up less than 45 ° of angle to the rotation axis (4) with the rotor, the rotor blade (2) along direction of rotation (5) with referring to
To blade edge (6), and centrifugation in the rotor blade (2) throws away and be mounted with region for from the rotor blade
(2) collecting chamber (7) of the longer fibers thrown away on, long fibre is hung on rotor blade (2) and due to rotor blade (2)
Centrifugal force is thrown out of, while remaining fibrous suspension passes through rotor blade (2) and the collecting pit below rotor blade
(12) it is collected and derives in, it is characterised in that institute is compared by the inswept area of the rotor blade (2) in Plane of rotation (8)
There is the gross area of rotor blade (2) big 3 to 15 times.
2. equipment as claimed in claim 1, it is characterised in that swept by the rotor blade (2) in the Plane of rotation (8)
The area crossed is bigger 5 to 10 times than the gross area of all rotor blades (2).
3. a kind of for removing long stapled equipment from fibrous suspension, it has at least one to possess multiple rotor blades
(2) rotor (1), wherein, the jet (3) of fibrous suspension points to the rotor blade (2) of the rotor (1), jet direction with
The rotation axis (4) of the rotor makes up less than 45 ° of angle, and the rotor blade (2) along direction of rotation (5) with pointing to
Blade edge (6), and centrifugation in the rotor blade (2) throws away and be mounted with region for from the rotor blade (2)
On the collecting chamber (7) of longer fibers that throws away, long fibre be hung on rotor blade (2) and due to rotor blade (2) from
Mental and physical efforts are thrown out of, while remaining fibrous suspension passes through rotor blade (2) and the collecting pit (12) below rotor blade
Inside be collected and derive, it is characterised in that the rotor blade (2) at least more than 50% radially extend distance in,
The width of rotor blade (2) is big 3 to 15 times described in gap ratio in Plane of rotation (8) between the rotor blade (2).
4. equipment as claimed in claim 3, it is characterised in that at least more than the 50% of the rotor blade (2) radial direction
In extended distance, the width of rotor blade (2) described in the gap ratio between the rotor blade (2) in the Plane of rotation (8)
Spend big 5 to 10 times.
5. the equipment as described in one of preceding claims, it is characterised in that the blade edge (6) is radially outward at least one
Direction of rotation (5) is in reverse in individual section relative to radial direction obliquely to extend.
6. equipment as claimed in claim 5, it is characterised in that the blade edge (6) radially outward at least one at least
Direction of rotation (5) is in reverse in outermost section relative to radial direction obliquely to extend.
7. equipment as claimed in claim 5, it is characterised in that the angled section of the blade edge (6) and radially between
Angle (9) is between 30 to 70 °.
8. equipment as claimed in claim 7, it is characterised in that the angle (9) is between 55 to 65 °.
9. the equipment as described in claim 1 or 3, it is characterised in that the rotor blade (2) is in the Plane of rotation (8)
Width with 0.5 to 5mm.
10. equipment as claimed in claim 9, it is characterised in that the rotor blade (2) tool in the Plane of rotation (8)
There is the width of 1 to 3mm.
11. equipment as described in claim 1 or 3, it is characterised in that two adjacent rotors in the Plane of rotation (8)
Spacing between blade (2) is between 5 to 25mm.
12. equipment as claimed in claim 11, it is characterised in that two adjacent rotor leaves in the Plane of rotation (8)
Spacing between piece (2) is between 10 to 15mm.
13. equipment as described in claim 1 or 3, it is characterised in that the length of the rotor blade (2) with 5 to 30mm.
14. equipment as claimed in claim 13, it is characterised in that the length of the rotor blade (2) with 10 to 20mm.
15. equipment as described in claim 1 or 3, it is characterised in that the rotor blade (2) is transverse to the Plane of rotation
(8) thickness with 0.2 to 2mm.
16. equipment as claimed in claim 15, it is characterised in that the rotor blade (2) is transverse to the Plane of rotation (8)
Thickness with 0.3 to 0.7mm.
17. equipment as described in claim 1 or 3, it is characterised in that the radius (R) on the blade edge (6) is more than described
Rotor blade (2) transverse to the thickness of the Plane of rotation (8) 10%.
18. equipment as described in claim 1 or 3, it is characterised in that the rotor blade (2) is at least in the blade edge
(6) the roughness R in regionABelow 1 μm.
19. equipment as described in claim 1 or 3, it is characterised in that the rotor blade (2) is with flat profile.
20. equipment as claimed in claim 19, it is characterised in that the rotor blade (2) with it is flat, along direction of rotation
(5) profile for extending.
21. equipment as described in claim 1 or 3, it is characterised in that the rotor blade (2) is by electrobrightening.
22. equipment as claimed in claim 21, it is characterised in that the blade edge (6) of the rotor blade (2) is thrown by electrolysis
Light.
23. equipment as described in claim 1 or 3, it is characterised in that the jet (3) of the fibrous suspension is designed to ring
Shape and be coaxially directed with the rotor (1).
24. equipment as claimed in claim 23, it is characterised in that the jet direction of the jet (3) of the fibrous suspension is put down
Rotation axis (4) of the row in the rotor (1) extends.
25. equipment as claimed in claim 23, it is characterised in that the jet (3) is by making the spray of the jet (3) acceleration
Mouth is pointed at the rotor blade (2).
26. equipment as claimed in claim 25, it is characterised in that the spacing between the nozzle and the rotor blade (2)
Less than 20mm.
27. equipment as claimed in claim 26, it is characterised in that the spacing between the nozzle and the rotor blade (2)
Less than 10mm.
28. equipment as claimed in claim 26, it is characterised in that the spacing between the nozzle and the rotor blade (2)
Less than 5mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210215964 DE102012215964A1 (en) | 2012-09-10 | 2012-09-10 | fiber screening |
| DE102012215964.9 | 2012-09-10 | ||
| PCT/EP2013/066563 WO2014037178A1 (en) | 2012-09-10 | 2013-08-07 | Fibre sorting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104619912A CN104619912A (en) | 2015-05-13 |
| CN104619912B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018127914A1 (en) * | 2018-11-08 | 2020-05-14 | Voith Patent Gmbh | 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 |
| WO2001029297A1 (en) | 1999-10-20 | 2001-04-26 | Auckland Uniservices Limited | A method of fibre separation |
| CN102119248A (en) | 2008-08-11 | 2011-07-06 | 沃依特专利有限责任公司 | 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 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
- 2013-08-07 WO PCT/EP2013/066563 patent/WO2014037178A1/en active Application Filing
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104619912A (en) | 2015-05-13 |
| EP2893078A1 (en) | 2015-07-15 |
| DE102012215964A1 (en) | 2014-03-13 |
| WO2014037178A1 (en) | 2014-03-13 |
| EP2893078B1 (en) | 2016-12-14 |
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| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |