CN1263788A - Count-current washing press filter - Google Patents
Count-current washing press filter Download PDFInfo
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- CN1263788A CN1263788A CN 99102605 CN99102605A CN1263788A CN 1263788 A CN1263788 A CN 1263788A CN 99102605 CN99102605 CN 99102605 CN 99102605 A CN99102605 A CN 99102605A CN 1263788 A CN1263788 A CN 1263788A
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Abstract
A back washing press filter for extracting the black liquid from paper pulp features that it has additional diffusion back washing unit besides shaper unit, squeezing unit and drive unit. Said additional unit is composed of diluting diffusion unit with spiky roller, guide roller, pre-pressing squeeze roller and water accepting tray. Its advantages are reasonable structure, high cleaning level, high extraction efficiency of black liquid, high dewatering effect and no environmental pollution.2
Description
The present invention relates to a kind of count-current washing press filter, the black liquid extraction of back black wash and the equipment of pulp washing are boiled in particularly a kind of papermaking, are applicable to general pulp washing, are particularly useful for the extraction of straw pulp black liquor.
Be used for papermaking in the prior art and boil that the back black wash extracts and pulp washing apparatus mainly contains mechanism filter-pressing equipment and countercurrent backwashing equipment, mechanism filter-pressing equipment is the highest equipment of recovery rate of present black liquid, but when using, it needs multiple devices series connection (extraction rate of black liquor of single device is not high), thereby equipment investment is big, dilution gfactor is also big, so total recovery rate of black liquor is still not ideal enough, also handles simultaneously and brought difficulty to black liquor.And countercurrent backwashing equipment is pulp washing, the black liquor extraction equipment of dilution gfactor minimum in theory, it is with the power of vacuum as the extraction black liquor, so not only power consumption is big, and the inhomogeneities that distributes on the net owing to paper pulp causes the decline of extraction rate of black liquor, add that the diffusion velocity of black liquor in backwash water can not finish at short notice, thus the total recovery rate of the black liquor of this kind equipment do not resemble calculate in theory height.
Zhejiang Province papermaking association, Zhejiang Province papermaking printing industry group company united " Zhejiang papermaking " magazine of doing and openly introduced a kind of multistage counter current folder net washing and starching machine in 97 year third phases, this machine mainly contains three parts and forms, first is folder net forming portion, second portion is a mechanical expression portion, third part is a countercurrent backwashing portion, although it with mechanism filter-pressing with countercurrent backwashing the two advantages, but it still has the following disadvantages: 1, owing to be subjected to its structural restriction, the folder net forming can only be with lower concentration and quantitatively moulding; 2, the mass dryness fraction that goes out forming part is not enough to enter the press section requirement, and is because the folder net is the sophisticated equipment of paper machine, not really suitable to rinsing maching; 3, paper pulp is through behind the high intensity vpress, and the big molecule in fiber and the impurity is compacted, enter the countercurrent backwashing district after owing to lack diffusion structure, impurity can not evenly spread in backwash water at short notice, thereby can not give full play to the effect of countercurrent backwashing; 4, because mechanical expression portion is arranged on the centre of forming part and countercurrent backwashing portion, so the poor effect of press dewatering can not be given full play to the effect of high intensity vpress, simultaneously, the clean result of complete machine is not good, is unfavorable for being dissolved in the discharge of the big molecule debirs in the water.
The objective of the invention is to overcome existing above-mentioned deficiency in the prior art, and provide a kind of reasonable in design, being right after after forming part is diffusion back washing portion and press section is arranged on last count-current washing press filter, to reach the discharge that helps big molecule debirs, give full play to the purpose that effect, the clean result of high intensity vpress is good and do not pollute the environment.
Purpose proposed by the invention can be achieved through the following technical solutions: this count-current washing press filter comprises forming part, press section and driving section, forming part is positioned at the highest of complete machine, its design feature is also to be provided with diffusion back washing portion, it mainly is made up of goat's horn roller dilution diffuser, deflector roll, pony press and diffusion back washing drip tray, and they are installed on the frame; Diffusion back washing portion is arranged between forming part and the press section, and press section is arranged on the last of complete machine.
The said deflector roll of the present invention is made up of common deflector roll and back washing squeezing deflector roll, and the also available wandering star roller of this deflector roll substitutes, so that result of use is better.
The said goat's horn roller dilution of the present invention diffuser the best is two groups or more, and every group needs one at least, to guarantee the discharge of big molecule debirs.
Diffusion back washing drip tray of the present invention comprises the upper, middle and lower drip tray, so that the black liquor of variable concentrations is delivered to different job sites, has accomplished cleaner production, not to any waste water of environmental emission.
The present invention is provided with the squeezing drip tray at the plain press roller of press section and the bottom of high intensity vpress roller, so that black liquor is sent.
The present invention compared with prior art has the following advantages and effect: 1, reasonable in design, owing to be provided with forming part and diffusion back washing portion, paper pulp be evenly distributed on the net, and, improved the outlet mass dryness fraction by behind the mechanical expression, and obtained the highest wash degree; 2, the design of diffusion back washing portion helps big molecule debirs and discharges after forming part; Fully used dilution, diffusion, the anti-principle that flows of back washing in diffusion back washing portion, compared, when having kept this advantage that machine floor space is little, dilution gfactor is little, increased dilution and diffusion region, had higher black liquid extraction efficient with level band wash engine; 3, press section is arranged at last, makes that the paper pulp wash degree that enters press section is the highest, the squeezer dehydrating effect is best, has given full play to the effect of high intensity vpress; Simultaneously, the mass dryness fraction that goes out squeezing is exactly the mass dryness fraction that complete machine, and this mass dryness fraction is high more, and the clean result of complete machine is good more; 4, be provided with drip tray in each dehydration point, thus can be according to processing arrangement, send the different operating place with the black liquor of variable concentrations, send the dilution of whitewashing storehouse to boil back paper pulp as rare black liquor, concentrated black liquid send the alkali recycle section or send brick and tile plantmix mud etc.; 5, this equipment to any waste water of environmental emission, has not been accomplished cleaner production in clean paper pulp, high efficiency extraction black liquor (send into black liquor and handle workshop section).
Description of drawings is as follows:
Fig. 1 is structural representation of the present invention (embodiment one).
Fig. 2 is the structural representation of embodiments of the invention two.
Fig. 3 is the structural representation of embodiments of the invention three.
Fig. 4 is the structural representation of real inventive embodiment four.
Following the present invention will be described in further detail in conjunction with the accompanying drawings and by embodiment.
Embodiment one:
Referring to Fig. 1, this is that the present invention is arranged in two layers, and one deck can be arranged reserve pit, black liquor pond etc., the occasion that suitable grout outlet is lower.In order to clearly illustrate that the structure and the course of work, the frame of not drawing in the accompanying drawing and driving section.
The present invention is made up of four parts, be forming part I, the diffusion back washing II of portion, press section III and driving section, wherein forming part I, the diffusion back washing II of portion and press section III are installed on the frame, and they are linked to be an integral body by spacer screen 2 and veil 5, and drive running by transmission mechanism.
Forming part I of the present invention mainly is made up of head box 1, dewatering plate 4, super moulding cylinder 6, lining net 7, couch roll 8 and moulding drip tray 23,24, they all are installed on the frame, lining net 7 is located at the bottom of super moulding cylinder 6, and couch roll 8 is located at the outlet of super moulding cylinder 6; Wherein spacer screen 2, veil 5 and lining net 7 this three to throw the net be cycle operation, they all finish tensioning sideslip calibration function by stretcher 20, sideslip adjuster 21.Simultaneously, because spacer screen 2, veil 5 are longer, also be provided with auxiliary stretcher 22; Spacer screen 2, veil 5 also are provided with spacer screen jet water spout 15 and veil jet water spout 19 respectively in backhaul.
The diffusion back washing II of portion of the present invention is arranged between forming part II and the press section III, mainly form by goat's horn roller dilution diffuser 9,11, deflector roll IV, pony press 14 and diffusion back washing drip tray V, they are installed on the frame, and said deflector roll IV is made up of common deflector roll 10,12 and back washing squeezing deflector roll 13, the also available wandering star roller of this deflector roll IV substitutes, to obtain better result of use; Pony press 14 can be one group or array, decides according to actual conditions; Goat's horn roller dilution diffuser 9,11 the bests are two groups or more, and every group at least one, one group can certainly; Diffusion adverse current drip tray V then comprises upper, middle and lower drip tray 27,26,25.
Press section III of the present invention is arranged on the last of complete machine, mainly is made up of plain press roller 16 and high intensity vpress roller 17, and is equipped with squeezing drip tray 28,29.In addition, for washing or wash less demanding paper pulp and also can not establish press section III or only establish one group of pressure roller than being easier to.
Driving section of the present invention is directly linked by the lower roll of the plain press roller 16 of transmission mechanism and super moulding cylinder 6 and press section III and high strength pressure roller 17 and forms, and adopts automatic speed regulation mechanism, to guarantee the different tensioning requirements of filter screen in each several part.
During work, the back paper pulp (concentration gets final product to adapt to pumping) that boils that the black liquor through extracting has diluted is pumped in the head box 1, and stream delivers on the spacer screen 2, after vibrator 3 shakes, be evenly distributed on the spacer screen 2, and by dewatering plate 4 preliminary hydro-extractions.Then, enter super moulding cylinder 6 dehydrations under the clamping of veil 5, the lining net 7 of tensioning has further been strengthened dehydration, after couch roll 8 press dewaterings leave forming part I.
Under the clamping of spacer screen 2 and veil 5, paper pulp enters second portion, promptly spreads the II of back washing portion.At first with two nets separately, paper pulp enters first group of goat's horn roller dilution diffuser 9, and thinned water is from middle drip tray 26, and water yield size is subjected to 15 controls of spacer screen jet water spout.Paper pulp has added dilution water, and under the stirring action of goat's horn roller dilution diffuser 9, has obtained good dilution, diffusion, is beneficial to the discharge of big molecular melting refuse, is evenly distributed on the wire side again then.Net bottom 2 and veil 5 are before common deflector roll 10, and clamping dilution, the paper pulp that has spread lump together again, through the extruding of common deflector roll 10, after the dehydration, enter second group of goat's horn roller dilution diffuser 11, and principle is with preceding identical.Dilution water is from upper accepting water dish 27, leave common deflector roll 12 after, two network folders are held paper pulp and are entered the countercurrent backwashing zone of being made up of several countercurrent backwashing deflector rolls 13, after after pony press 14 squeezings, leave contrary sacrificial the II of diffusion.
Under the clamping of spacer screen 2 and veil 5, paper pulp enters third part, i.e. press section III.The linear pressure of plain press roller 16 is the 30-40 Newton/millimeter, and the linear pressure of high intensity vpress roller 17 is the 100-150 Newton/millimeter.After going out press section III, spacer screen 2 separates with slurry layer, in backhaul, finish requisite work such as tensioning, sideslip correction, flushing after, get back to starting point, carry out starching, dehydration work again.Veil 5 separates with slurry layer at discharge roller 18 places, in backhaul, finish requisite work such as tensioning, sideslip correction, flushing after, get back to starting point, carry out clamping, dehydration work again.Paper pulp with after filter screen separates, jointly enters the following workshop section of papermaking with the flushing water from veil jet water spout 19 at discharge roller 18 places.
Embodiment two:
Referring to Fig. 2, this is that the present invention is arranged in structural representation in one deck factory building, and it is applicable to that mainly pulp point is higher, so that the paper pulp after directly will cleaning is sent into the occasion in the stock tank.Also press section III can be arranged on two layers, and remainder is arranged on one deck.Present embodiment is compared with embodiment one, and primary structure is all identical, and it also is mainly to be made up of forming part I, the diffusion back washing II of portion and press section III, and wherein press section III is arranged on the last of complete machine.The different just position of press section III having been raised so that be arranged in one deck factory building.
Embodiment three:
Referring to Fig. 3,, under the situation of factory building height permission, also one to two road countercurrent backwashing squeezing deflector roll can be set between two groups of goat's horn roller dilution diffusers 9,11, or set up several countercurrent backwashing squeezing deflector roll in order further to improve the countercurrent backwashing effect.Present embodiment is compared with embodiment one, and primary structure is also identical, has just set up three countercurrent backwashing squeezing deflector rolls 13 between two groups of goat's horn roller dilution diffusers 9,11 in the diffusion back washing II of portion.And the diffusion back washing II of portion is still between forming part I and press section III.
Embodiment four:
Referring to Fig. 4, present embodiment is applicable to the paper pulp of difficult especially dehydration.Present embodiment is compared with embodiment one, and primary structure is also identical, has just established several roads pony press 30 in press section III more, to help dehydration, makes press section III can bring into play maximum function.Press section III still is arranged on the last of complete machine.In addition, the use that also embodiment three and present embodiment can be combined.
At last, need to prove that the present invention not only can be used as the high efficiency extraction equipment of black liquor, also can make following purposes: the 1) paper pulp after the bleaching (or not floating), directly send into stream of the present invention and starch in 1 the case, carry out continuous washing, the high quantitatively pulpboard of wet lapped one-tenth; Also can make the pulp washing of other purposes uses.2) the cancellation diffusion adverse current II of portion of the present invention, structure adjusts slightly, is exactly moulding, the press section of a heavu weights plate machine; Mixing a reel machine or guillotine, is exactly a heavu weights plate presse-pate or pulp lap machine.
Claims (5)
1, a kind of count-current washing press filter comprises forming part, press section and driving section, and forming part is positioned at the foremost of complete machine, it is characterized in that:
A also is provided with diffusion back washing portion (II), and it mainly is made up of goat's horn roller dilution diffuser (9), (11), deflector roll (IV) pony press (14) and diffusion back washing drip tray (V), and they are installed on the frame;
B, diffusion back washing portion (II) is arranged between forming part (I) and the press section (III), and press section (III) is arranged on the last of complete machine.
2, count-current washing press filter as claimed in claim 1 is characterized in that: said deflector roll (IV) is made up of common deflector roll (10), (12) and back washing squeezing deflector roll (13), and the also available wandering star roller of this deflector roll (IV) substitutes.
3, count-current washing press filter as claimed in claim 1 is characterized in that: said goat's horn roller dilution diffuser (9), (11) the best are two groups or more, and every group needs one at least.
4, count-current washing press filter as claimed in claim 1 is characterized in that: diffusion back washing drip tray (V) comprises upper, middle and lower drip tray (27), (26), (25).
5, count-current washing press filter as claimed in claim 1 is characterized in that: be provided with squeezing drip tray (28), (29) at the plain press roller (16) of press section (III) and the bottom of high intensity vpress roller (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99102605A CN1111439C (en) | 1999-02-14 | 1999-02-14 | Count-current washing press filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99102605A CN1111439C (en) | 1999-02-14 | 1999-02-14 | Count-current washing press filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1263788A true CN1263788A (en) | 2000-08-23 |
| CN1111439C CN1111439C (en) | 2003-06-18 |
Family
ID=5270874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99102605A Expired - Fee Related CN1111439C (en) | 1999-02-14 | 1999-02-14 | Count-current washing press filter |
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| Country | Link |
|---|---|
| CN (1) | CN1111439C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733228A (en) * | 2012-07-11 | 2012-10-17 | 岳阳林纸股份有限公司 | High-efficiency pulp washing squeezer |
| CN104911941A (en) * | 2015-05-19 | 2015-09-16 | 福建汇利丰环保科技有限公司 | Material collecting mechanism capable of automatically collecting pulp materials output by pulp press in roll shape |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2045634B (en) * | 1979-03-26 | 1983-02-02 | Holmes B J | Screening apparatus |
| FI74879C (en) * | 1986-11-05 | 1989-01-16 | Rauma Repola Oy | The filter belt press |
| US5591336A (en) * | 1988-10-28 | 1997-01-07 | The Black Clawson Company | Apparatus for dewatering and or washing papermaking stock |
| CN1043370C (en) * | 1994-08-17 | 1999-05-12 | 张世乐 | Two-purpose machine for steaming and washing paper pulp |
-
1999
- 1999-02-14 CN CN99102605A patent/CN1111439C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733228A (en) * | 2012-07-11 | 2012-10-17 | 岳阳林纸股份有限公司 | High-efficiency pulp washing squeezer |
| CN102733228B (en) * | 2012-07-11 | 2014-07-09 | 岳阳林纸股份有限公司 | High-efficiency pulp washing squeezer |
| CN104911941A (en) * | 2015-05-19 | 2015-09-16 | 福建汇利丰环保科技有限公司 | Material collecting mechanism capable of automatically collecting pulp materials output by pulp press in roll shape |
| CN104911941B (en) * | 2015-05-19 | 2017-03-08 | 福建汇利丰环保科技有限公司 | A kind of can automatically web-like collect pneumatic mortar machine output pulp material receiving mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1111439C (en) | 2003-06-18 |
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