CN108660841A - A kind of paper grade (stock) scalping purification system - Google Patents
A kind of paper grade (stock) scalping purification system Download PDFInfo
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- CN108660841A CN108660841A CN201710213753.4A CN201710213753A CN108660841A CN 108660841 A CN108660841 A CN 108660841A CN 201710213753 A CN201710213753 A CN 201710213753A CN 108660841 A CN108660841 A CN 108660841A
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- scalping
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Classifications
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- 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
- D21D5/06—Rotary screen-drums
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of paper grade (stock) scalping purification systems, belong to papermaking equipment technical field.It includes discharging tower connected in sequence, level Four pressurized screen, it is characterised in that：Further include desander, thickener and sludge squeezer；The good slurry pipe of the level Four pressurized screen and the slurry inlet of desander connect, and the import of the sand removing hole and thickener of desander connects, and the outlet of thickener connects sludge squeezer；The slurry outlet connection classifying screen of desander, classifying screen have two-stage, and be respectively connected one section of classifying screen and two sections of classifying screens.Present system is also further removed the gred using desander after carrying out scalping using multistage pressure sieve, ensures that slurry reaches fine screen requirement；And sizing screening processing also is carried out to thick strained pulp, the slurry of different fibre lengths can be filtered out, different copy paper demands are met.
Description
Technical field
The invention belongs to papermaking equipment technical fields, more specifically to a kind of paper grade (stock) scalping purification system.
Background technology
Papermaking apparatus is the joint equipment of paper making, is mainly made of the part such as net, squeezing and drying.Mesh portions cylinder
With two kinds of fourdrinier wire, press section is made of pressure roller and papermaker's felt etc., and drying section is made of one or several drying cylinders.Certain fourdrinier wires
Machine is also equipped with calender, with smoothness and the tightness etc. for improving paper.There are many type of papermaking apparatus, such as manufacture one-side glazed paper
The thin-paper machine of the more drying cylinder paper machines of fourdrinier wire, manufacture typing paper and the cigarette paper of the MG. machine, the general paper of manufacture opened etc., system
The lap machine etc. of papermaking plate.
Modern Paper making procedure such as is generally divided into slurrying, modulates, manufactures paper with pulp, process at the key steps, and the process of slurrying is papermaking
The first step, be to convert wood into paper pulp, modulation includes dissipating slurry, mashing, plus glue and stowing operation.The preparation of slurry is copy paper
Premise, the quality of slurry influences the quality of finished paper very big, therefore the removal of impurities in slurrying is particularly significant, makes at present
Scalping system in the impurity removal process of workshop section is starched since equipment room lacks organic cooperation running, dust removal rate is relatively low and effect not
Good, coarse slag is easily accessible in fine-screening system, however fine-screening system is exclusively used in the secondary fine fine screening of slurry, if
Scalping system removes the gred, and effect is bad, and the screening effect of fine-screening system is often affected, and causes to be difficult to obtain the few height of slag
Quality slurry.
Also there is the technique for scalping in the prior art, as Chinese Patent Application No. is：201420079149.9 publication date
For：The patent document on the 27th of August in 2014 discloses a kind of paper grade (stock) scalping system, including one section of scalping, two sections of scalpings and three
The good slurry of section scalping, one section of scalping is communicated in material storage container by grout outlet, and the dregs of one section of scalping are thick by slag-drip opening and two sections
The stock inlet of sieve is connected；The good slurry of two sections of scalpings is communicated in material storage container by grout outlet, and the dregs of two sections of scalpings pass through deslagging
Mouth is connected with the stock inlet of three sections of scalpings；The good slurry of three sections of scalpings is communicated in material storage container, the slag of three sections of scalpings by grout outlet
Dregs is connected by slag-drip opening with flotation sieve；The good slurry of flotation sieve is communicated in discharging tower by grout outlet and is connected, flotation sieve
Weight slag is connected by re-scheduling cinder notch with the first pulper, and the light slag of flotation sieve is connected by arranging light cinder notch with impurity separator
Logical, the good slurry of impurity separator is communicated in the second pulper by grout outlet, and the dregs of impurity separator pass through slag-drip opening and storage
Slag chute is connected, and the slag-drip opening for storing up slag chute is connected with filter press.Although the program has carried out multistage scalping, but for sifting out
Slurries in contain tiny slag, fine screen requirement is not achieved in slurry cleanliness factor, and it does not also divide fibre length
Grade screening, is further improved.
For another example, Chinese Patent Application No. is：201210247072.7 publication date is：The patent text on October 17th, 2012
It offers, discloses a kind of papermaking screening deslagging process.It includes primary screening technology A and classifying screen technique B；The primary screening technology A is used
Hydrabrusher, HC Cleaner, discharging tower, scalping system and in dense scummer；The classifying screen technique B using classifying screen,
The low dense desanding system of short fibre, the low dense desanding system of middle fibre, long fine low dense desanding system, middle fine lightweight slag removing system, long fine fine screen
System and thickener.Only general explanation has scalping system to the program, but does not provide the concrete scheme of scalping.
Invention content
1, it to solve the problems, such as
For during the scalping of existing paper production paper pulp removal of impurities precision it is not high the problem of, the present invention provides one kind and makes
Paper scalping purification system is sieved using multistage pressure after carrying out scalping, also further slagging-off, ensures that slurry reaches fine screen requirement.
In addition, also carrying out sizing screening processing to thick strained pulp, the slurry of different fibre lengths can be filtered out, different copy paper need are met
It asks.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of paper grade (stock) scalping purification system, including discharging tower connected in sequence, the pressurized screen of level Four, desander, concentration
Machine and sludge squeezer；The slurry inlet of the good slurry pipe of the level Four pressurized screen and desander connects, the sand removing hole of desander with
The import of thickener connects, and the outlet of thickener connects sludge squeezer.
As a further improvement, the desander have level Four, respectively one section of desander, two sections of desanders, three sections
Desander and four sections of desanders, the sediment ejection opening of one section of desander connect the slurry inlet of two sections of desanders, the sand discharge of two sections of desanders
The slurry inlet of mouth three sections of desanders of connection, the sediment ejection opening of three sections of desanders connect the slurry inlet of four sections of desanders, four sections of desanders
Sediment ejection opening connect thickener, thickener connect sludge squeezer.
As a further improvement, the slurry outlet connection classifying screen of one section of desander, classifying screen have two-stage, respectively
Be connected one section of classifying screen and two sections of classifying screens.
As a further improvement, the slurry entrance of one section of desander of slurry outlet connection of two sections of desanders, three sections of desanding
The slurry entrance of two sections of desanders of slurry outlet connection of device, the slurry entrance of three sections of desanders of slurry outlet connection of four sections of desanders.
As a further improvement, the level Four pressurized screen be respectively one section of pressurized screen, two sections of pressurized screens, three sections of pressurized screens and
Four sections of pressurized screens, the inlet pipe of two sections of pressurized screens of weight slag outlet connection of one section of pressurized screen, the heavy slag outlet of two sections of pressurized screens connects
The inlet pipe of three sections of pressurized screens, four sections of screening reject slots of weight slag outlet connection of three sections of pressurized screens are connect, four sections of screening reject slots connect four sections of pressures
The inlet pipe of power sieve, the heavy slag outlet connection filter press of four sections of pressurized screens.
As a further improvement, the light cinder notch of one section of pressurized screen, two sections of pressurized screens and three sections of pressurized screens is connected to four sections
Screening reject slot.
As a further improvement, the filter press is belt filter press.
As a further improvement, along the circumferential direction offering multiple uniform intervals on the screen cylinder ontology of one section of pressurized screen
The rectangle screen slot of setting along the circumferential direction opens up one or more helicla flutes on the inner wall of screen cylinder ontology from top to bottom；Described two
Round sieve is opened up on the screen cylinder ontology of section pressurized screen, three sections of pressurized screens and four sections of pressurized screens.
As a further improvement, the surface smear of the screen cylinder ontology of the pressurized screen has wearing layer.
As a further improvement, on the screen cylinder ontology of one section of pressurized screen rectangle screen slot width be 0.6mm, described two
A diameter of 2.6mm of sieve pore on the screen cylinder ontology of section pressurized screen, sieve pore is a diameter of on the screen cylinder ontology of three sections of pressurized screens
2.5mm, a diameter of 2.4mm of sieve pore on the screen cylinder ontology of four sections of pressurized screens.
3, advantageous effect
Compared with the prior art, beneficial effects of the present invention are：
(1) paper grade (stock) scalping purification system of the present invention, on the basis of conventionally employed pressurized screen carries out scalping, after scalping
Slurry is further removed the gred, and the cleanliness factor of slurry is improved, and reaches the requirement of follow-up fine screen, the dregs that desander obtains into
Thickener and sludge squeezer form the raw material that sludge can be used as low grade products, reduce transportation cost and production cost；
(2) paper grade (stock) scalping purification system of the present invention gradually carries out screening reject using the desander of level Four, and next stage obtains
The slurry arrived returns to upper level postsearch screening also more can screen out dregs to depth under the premise of with higher slurry yield,
Further increase the cleanliness factor of gained slurry；
(3) paper grade (stock) scalping purification system of the present invention, the slurry for exporting out from the slurry of level-one desander enter classifying screen
Classification processing is carried out, the gradable slurry for filtering out required different fibre lengths meets papery production face layer, sandwich layer and bottom
Different demands；
(4) paper grade (stock) scalping purification system of the present invention is removed by layering in slurry using the pressurized screen of level Four
Larger dregs, good separating effect, slagging-off are efficient, and the light slag that the pressurized screen of preceding three-level obtains first is passed through in four sections of screening reject slots
Storage enters back into four sections of pressurized screens and carries out last and filtering, to reduce stock losses, improve slurry yield after slag precipitation,
Slag after four sections of pressurized screens is condensed into a blob of slag for required concentration by filter press compression, can be used as byproduct sources and improves receipts
Benefit；
(5) the screen cylinder ontology of paper grade (stock) scalping purification system of the present invention, one section of pressurized screen uses rectangle screen slot, increases sieve
Whole percent opening increases slurry through amount, substantially increases the quality of screening the pulp, reduces pressurized screen operation energy consumption；
(6) paper grade (stock) scalping purification system of the present invention crosses pulpous state condition, optimization design screen cylinder ontology according to pressurized screens at different levels
Upper gap size uses the width of rectangle screen slot on the screen cylinder ontology of one section of pressurized screen for 0.6mm, the screen cylinder sheet of two sections of pressurized screens
A diameter of 2.6mm of sieve pore on body, a diameter of 2.5mm of sieve pore, the sieve of four sections of pressurized screens on the screen cylinder ontology of three sections of pressurized screens
A diameter of 2.4mm of sieve pore, obtains preferable equalization point between slurry yield and screening reject on drum ontology, and it is whole to be conducive to raising equipment
Running body efficiency；
(7) surface smear of paper grade (stock) scalping purification system of the present invention, the screen cylinder ontology of pressurized screen has wearing layer, this structure
Design is so that screen cylinder ontology can adapt to the slurry more than bits, and wear rate is relatively low.
Description of the drawings
Fig. 1 is the system block diagram of paper scalping purification system of the present invention；
Fig. 2 is the structural schematic diagram of the screen cylinder of pressurized screen in paper scalping purification system of the present invention.
In figure：1, screen cylinder ontology；2, rectangle screen slot；3, helicla flute.
Specific implementation mode
The present invention is further described below with reference to specific embodiments and the drawings.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of paper grade (stock) scalping purification system, including discharging tower, pressurized screen, desanding
Device, thickener and sludge squeezer；Wherein, the pressurized screen has level Four, respectively one section of pressurized screen, two sections of pressurized screens, three
Section pressurized screen and four sections of pressurized screens, the discharge port connection of discharging tower, the heavy slag of the inlet pipe of one section of pressurized screen, one section of pressurized screen go out
The inlet pipe of mouth two sections of pressurized screens of connection, the inlet pipe of three sections of pressurized screens of weight slag outlet connection of two sections of pressurized screens, three sections of pressure
Four sections of screening reject slots of weight slag outlet connection of sieve, four sections of screening reject slots connect the inlet pipe of four sections of pressurized screens, the heavy slag of four sections of pressurized screens
Outlet connection filter press；And the light cinder notch of one section of pressurized screen, two sections of pressurized screens and three sections of pressurized screens is connected to four sections of screening reject slots.Using
The pressurized screen of level Four removes larger dregs in slurry, good separating effect, slagging-off are efficient, and preceding three-level by layering
The obtained light slag of pressurized screen be first passed through in four sections of screening reject slots and store, after slag precipitation, enter back into four sections of pressurized screens carry out it is last
And filtering improves slurry yield to reduce stock losses, the slag after four sections of pressurized screens is condensed into institute by filter press compression
The blob of slag for needing concentration can be used as byproduct sources and improve income.The filter press uses belt filter press, and treating capacity is big, contains
Water rate is low, and filtrate separation is quick, and sludge residual is few, and sludge catch rate is good, efficient, and stability is high, excellent durability.
It should be noted that the slurry inlet connection of the good slurry Guan Junyu desanders of above-mentioned level Four pressurized screen, desander
The import of sand removing hole and thickener connects, and the outlet of thickener connects sludge squeezer.In the present embodiment, desander has four
Grade, respectively one section of desander, two sections of desanders, three sections of desanders and four sections of desanders, the sediment ejection opening connection of one section of desander
The slurry inlet of two sections of desanders, the sediment ejection opening of two sections of desanders connect the slurry inlet of three sections of desanders, the sand discharge of three sections of desanders
The sediment ejection opening of the slurry inlet of mouth four sections of desanders of connection, four sections of desanders connects thickener, and thickener connects sludge squeezer.This
The system of embodiment uses desander into traveling one thick strained pulp on the basis of conventionally employed pressurized screen carries out scalping
Step slagging-off, improves the cleanliness factor of slurry, reaches the requirement of follow-up fine screen, and the dregs that desander obtains are into thickener and sludge
Squeezer forms the raw material that sludge can be used as low grade products, reduces transportation cost and production cost.Also, two sections of desanders
The slurry entrance of one section of desander of slurry outlet connection, the slurry entrance of two sections of desanders of slurry outlet connection of three sections of desanders, four sections are removed
The slurry entrance of three sections of desanders of slurry outlet connection of sand device, screening reject is gradually carried out using the desander of level Four, what next stage obtained
Slurry returns to upper level postsearch screening also more can screen out dregs to depth, into one under the premise of with higher slurry yield
Step improves the cleanliness factor of gained slurry.
Further, the slurry outlet connection classifying screen of one section of desander, classifying screen have two-stage, are respectively connected one section point
Grade sieve and two sections of classifying screens, by two-stage sizing screening, the gradable slurry for filtering out required different fibre lengths meets papery
The different demands of production face layer, sandwich layer and bottom.
In addition, as shown in Fig. 2, in this system, along the circumferential direction offered on the screen cylinder ontology 1 of one section of pressurized screen multiple equal
Even spaced rectangle screen slot 2 along the circumferential direction opens up one or more helicla flutes on the inner wall of screen cylinder ontology 1 from top to bottom
3, screen slot width is 0.6mm；And open up circle on the screen cylinder ontology 1 of two sections of pressurized screens, three sections of pressurized screens and four sections of pressurized screens
Sieve pore, and on the screen cylinder ontology 1 of two sections of pressurized screens sieve pore a diameter of 2.6mm, sieve pore on the screen cylinder ontology 1 of three sections of pressurized screens
A diameter of 2.5mm, a diameter of 2.4mm of sieve pore on the screen cylinder ontology 1 of four sections of pressurized screens.These parameters are according to pressurized screens at different levels
It crosses pulpous state condition to summarize to obtain by long-term production, preferable equalization point is obtained between slurry yield and screening reject, be conducive to raising and set
Standby overall operation efficiency.Traditional scalping also uses round sieve, aperture to reach 1.6mm, separate unit screening in one section of pressurized screen
For area at 3.14/0.46 square metres, energy consumption is larger, and for pressurized screen running current load up to 92%, equipment fluctuation of service is serious to make
About slurry through amount；And the present embodiment uses rectangle screen slot 2, and gap can be reduced to 0.6mm, increase the whole percent opening of sieve, increases
Big slurry through amount substantially increases the quality of screening the pulp, reduces pressurized screen operation energy consumption；And the helicla flute on 1 inner wall of screen cylinder ontology is made
To cross stock tank so that the slurry up and down of sieve is uniform.Meanwhile the surface smear of the screen cylinder ontology 1 of pressurized screen has wearing layer, this structure
Design is so that screen cylinder ontology can adapt to the slurry more than bits, and wear rate is relatively low.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of paper grade (stock) scalping purification system includes the pressurized screen of discharging tower connected in sequence, level Four, it is characterised in that：Also
Including desander, thickener and sludge squeezer；The good slurry pipe of the pressurized screen of the level Four and the slurry inlet of desander connect, and remove
The import of the sand removing hole and thickener of sand device connects, and the outlet of thickener connects sludge squeezer.
2. a kind of paper grade (stock) scalping purification system according to claim 1, it is characterised in that：The desander has four
Grade, respectively one section of desander, two sections of desanders, three sections of desanders and four sections of desanders, the sediment ejection opening connection of one section of desander
The slurry inlet of two sections of desanders, the sediment ejection opening of two sections of desanders connect the slurry inlet of three sections of desanders, the sand discharge of three sections of desanders
The sediment ejection opening of the slurry inlet of mouth four sections of desanders of connection, four sections of desanders connects thickener, and thickener connects sludge squeezer.
3. a kind of paper grade (stock) scalping purification system according to claim 2, it is characterised in that：The slurry of one section of desander
Outlet connection classifying screen, classifying screen have two-stage, respectively one section of connected classifying screen and two sections of classifying screens.
4. a kind of paper grade (stock) scalping purification system according to claim 2, it is characterised in that：The slurry of two sections of desanders
The slurry entrance of one section of desander of outlet connection, the slurry entrance of two sections of desanders of slurry outlet connection of three sections of desanders, four sections of desanding
The slurry entrance of three sections of desanders of slurry outlet connection of device.
5. a kind of paper grade (stock) scalping purification system according to claim 1, it is characterised in that：The pressure of the level Four is sieved
Not Wei one section of pressurized screen, two sections of pressurized screens, three sections of pressurized screens and four sections of pressurized screens, two sections of the weight slag outlet connection of one section of pressurized screen
The inlet pipe of pressurized screen, the inlet pipe of three sections of pressurized screens of weight slag outlet connection of two sections of pressurized screens, the heavy slag of three sections of pressurized screens go out
Mouth four sections of screening reject slots of connection, four sections of screening reject slots connect the inlet pipe of four sections of pressurized screens, and the heavy slag outlet connection of four sections of pressurized screens is pressed
Filter.
6. a kind of paper grade (stock) scalping purification system according to claim 5, it is characterised in that：One section of pressurized screen, two
The light cinder notch of section pressurized screen and three sections of pressurized screens is connected to four sections of screening reject slots.
7. a kind of paper grade (stock) scalping purification system according to claim 5, it is characterised in that：The filter press is belt
Filter press.
8. a kind of paper grade (stock) scalping purification system according to claim 5 or 6 or 7, it is characterised in that：One section of pressure
The rectangle screen slot (2) of multiple uniform intervals settings is along the circumferential direction offered on the screen cylinder ontology (1) of sieve, screen cylinder ontology (1)
One or more helicla flutes (3) are along the circumferential direction opened up on inner wall from top to bottom；Two sections of pressurized screens, three sections of pressurized screens and four
Round sieve is opened up on the screen cylinder ontology (1) of section pressurized screen.
9. a kind of paper grade (stock) scalping purification system according to claim 8, it is characterised in that：The screen cylinder sheet of the pressurized screen
The surface smear of body (1) has wearing layer.
10. a kind of paper grade (stock) scalping purification system according to claim 8, it is characterised in that：One section of pressurized screen
The width of rectangle screen slot (2) is 0.6mm on screen cylinder ontology (1), the diameter of sieve pore on the screen cylinder ontology (1) of two sections of pressurized screens
For 2.6mm, a diameter of 2.5mm of sieve pore on the screen cylinder ontology (1) of three sections of pressurized screens, on the screen cylinder ontology (1) of four sections of pressurized screens
A diameter of 2.4mm of sieve pore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213753.4A CN108660841A (en) | 2017-04-01 | 2017-04-01 | A kind of paper grade (stock) scalping purification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213753.4A CN108660841A (en) | 2017-04-01 | 2017-04-01 | A kind of paper grade (stock) scalping purification system |
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| Publication Number | Publication Date |
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| CN108660841A true CN108660841A (en) | 2018-10-16 |
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ID=63784343
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710213753.4A Pending CN108660841A (en) | 2017-04-01 | 2017-04-01 | A kind of paper grade (stock) scalping purification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983842A (en) * | 2019-11-22 | 2020-04-10 | 山鹰华南纸业有限公司 | Corrugated paper pulping produced by waste paper pulp board and production method and application thereof |
-
2017
- 2017-04-01 CN CN201710213753.4A patent/CN108660841A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983842A (en) * | 2019-11-22 | 2020-04-10 | 山鹰华南纸业有限公司 | Corrugated paper pulping produced by waste paper pulp board and production method and application thereof |
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Application publication date: 20181016 |