CN103993498A - Foam slurry distribution device - Google Patents
Foam slurry distribution device Download PDFInfo
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- CN103993498A CN103993498A CN201410257768.7A CN201410257768A CN103993498A CN 103993498 A CN103993498 A CN 103993498A CN 201410257768 A CN201410257768 A CN 201410257768A CN 103993498 A CN103993498 A CN 103993498A
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Abstract
The invention provides a foam slurry distribution device which is characterized in that a foam slurry generation device, a backflow material storage device, a foam slurry buffering device, a screw pump, a pressure stabilizing device and a distributor are included, the foam slurry generation device, the foam slurry buffering device, the screw pump, the pressure stabilizing device, the distributor and the backflow material storage device are sequentially connected, and the backflow material storage device is connected with the foam slurry buffering device. By means of the foam slurry distribution device, foam slurry can be precisely prepared so that the foam slurry can maintain good fluidity and be convenient to convey. A supplied material circulating and distributing system is formed, the system is constant in flow and stable in flow speed, the foam slurry can be evenly distributed and easy to form, and the amount and the breadth of paper manufactured with pulp are easy to adjust. The device is simple in structure, improves slurry concentration during net forming, saves a large amount of water and saves a lot of energy.
Description
Technical field
The present invention relates to a kind of distribution apparatus of foamed slurry, belong to high consistency technical field.
Background technology
The process of manufacturing paper with pulp of paper is a constantly process for dehydration, and this process is comprised of wet end, press section and drying section.Conventionally, by gravity, pulse or vacuum action, online low concentration slurry (0.1%～1.0%) is dewatered to 15%～25% mass dryness fraction; Then the effect by press section mechanical force further takes off water to 33%～55%; Finally by drying section, organize residual moisture in the lower paper web of evaporation of drying cylinder more and continue to deviate from, make paper web mass dryness fraction reach particular requirement, the carrying out of these a series of dehydrations need to consume a large amount of energy; Conventionally, China's papermaking unit product comprehensive energy consumption will be: ton paper pulp is than high 0.18～0.48 ton of mark coal of international most advanced level, and ton paper and cardboard are higher by 120% than international most advanced level.
Research based on to paper making process, now formed that on production line of paper machine, wet end is energy-conservation, press section is energy-conservation, strengthening dries a series of conservation measures such as conduct heat energy-conservation, ventilating system is energy-conservation, heat recovery energy-saving and energy system diagnosis and optimisation technique, reduced to a certain extent the comprehensive energy consumption of papermaking unit product.From energy-conservation angle, the dewatering that improves wet end and press section is more economic a kind of mode, such as the shaping of folder net, vacuum system optimization and high consistency etc.And when pulp density is higher, the chance of fiber Contact is frequent, interfibrous collision and machinery winding etc. act on and formation fleeces agglomerate, these wadding agglomerates are discrete, discontinuous, now slurries can not be uniformly distributed, and can not make that slurry can become continuously under higher fiber concentration, uniformly one deck network of fibers tissue, then drainage and formation.
Summary of the invention
The object of the present invention is to provide a kind of distribution apparatus of foamed slurry, make slurry still there is good mobility under the dense state of height, make fiber can be uniformly distributed, be easy to be shaped, can save a large amount of energy.
In order to achieve the above object, the invention provides a kind of distribution apparatus of foamed slurry, it is characterized in that, comprise foamed slurry generation device, reflux and expect storage device, foamed slurry buffer storage, screw pump, stable-pressure device and distributor, foamed slurry generation device, foamed slurry buffer storage, screw pump, stable-pressure device, distributor and backflow material storage device are connected successively, and the material storage device that refluxes connects foamed slurry buffer storage.
Preferably, described foamed slurry generation device connects fluid current meter and the gaseous mass current meter of solid masses meausring apparatus, magnetic strength.
Preferably, described backflow material storage device comprises the material storage device body that refluxes, the material storage device body that refluxes has the import of the material of backflow and the material outlet that refluxes, and in the material storage device body that refluxes, in the position of refluxing material import and reflux between material outlet, is provided with vibrating screen.
Preferably, described foamed slurry buffer storage be one with the tank container of agitating device.
Preferably, described screw pump is frequency conversion type screw pump.
Preferably, described stable-pressure device comprises stable-pressure device body, and the bottom of stable-pressure device body is provided with slurry outlet, and top is provided with slurry import, and top is provided with relief valve, and the position in stable-pressure device between slurry import and slurry outlet is provided with slit.
Preferably, described distributor comprises distributor shell, in distributor shell, be provided with slurry passage, described slurry passage has cylindrical tapered configuration, on the sidewall of distributor shell and slurry passage, be respectively equipped with the first gap nozzle and the second gap nozzle, the first gap nozzle is corresponding with the position of the second gap nozzle.
More preferably, the cross section of described distributor shell is circular, square or other polygon.
Preferably, described foamed slurry by natural or synthetic fiber with comprise can forming by foaming liquid of water, surfactant, filler, tobacco extract.
Preferably, the concentration of described foamed slurry is 1.5%～8%.
Compared with prior art, the invention has the beneficial effects as follows:
1, the distribution apparatus of foamed slurry provided by the invention can accurately be prepared foamed slurry, make foamed slurry keep good mobility, is convenient to carry; The present invention has formed a feed circulation, compartment system, the constant flow of this system, flow speed stability, and foamed slurry can be uniformly distributed, and is easy to be shaped, and the quantitative and fabric width of the paper of manufacturing paper with pulp is easy to regulate; Apparatus of the present invention features simple structure, the concentration of slurry while having improved net part forming, has not only saved a large amount of water, and has saved a large amount of energy.
2, foamed slurry generation device of the present invention is furnished with fluid current meter and the gaseous mass current meter of solid masses meausring apparatus, magnetic strength, can accurately control the when foamed slurry concentration that foams.
3, in backflow material storage device of the present invention, be provided with vibrating screen; its effect is long fiber or solids and the removal part bubble that filter foam slurry distribution removal process may be mixed with; with from the fresh slurry of foamed slurry generation device, mix, guarantee that mixed slurry gas-liquid content maintains in specific scope.
4, foamed slurry buffer storage of the present invention is a tank container that contains agitating device, it can mix the recovery foamed slurry of the fresh foam slurry of sending here in foamed slurry generation device and the material storage device conveying that refluxes, and also can make the blowing ratio of foamed slurry keep constant simultaneously.
5, screw pump of the present invention is frequency conversion type screw pump, with frequency converter, control the rotating speed of motor, according to the difference that will carry the concentration of slurry, control as much as possible the stable of output tolerance, thereby can on the basis that stable foam slurry stream is provided, reach energy-conservation object.
6, there is slit the inside of stable-pressure device of the present invention, the pressure providing by means of screw pump, foamed slurry is filtered, and elimination solid content and long fiber wherein, avoids foamed slurry due to solid content or long stapled delay, obstruction etc., can not be uniformly distributed when distributing.The top of stable-pressure device is provided with relief valve, in view of screw pump, carry the pressure of slurry and stablize, continuous, when device internal pressure is excessive, can pass through relief valve release pressure, one side holding device inner pressure constant, can make on the other hand foamed slurry in stabilising arrangement stream, make foamed slurry stream can be evenly continuous transfer to distributor, for distributor is smooth and easy, be uniformly distributed creation necessary condition.
7, the setting of the internal channel of distributor of the present invention is circular tapered configuration, based on foamed slurry from the pipeline that is connected with stable-pressure device with certain pressure entering at the uniform velocity, the tapered configuration of inner circular has overcome because foamed slurry is subject to drag effect to produce pressure drop at flow process, make foamed slurry in whole distributor length, to keep the constant of pressure and speed, thereby via the equally distributed ejection of the slit perpendicular to bar type distributor axis, foamed slurry can be uniformly distributed.
Accompanying drawing explanation
Fig. 1 is the distribution apparatus structural representation of foamed slurry;
Fig. 2 is the material storage device structural representation that refluxes;
Fig. 3 is Structure of Vibrating Screen schematic diagram;
Fig. 4 is stable-pressure device structural representation;
Fig. 5 is narrow slit structure schematic diagram;
Fig. 6 is distributor profile;
Fig. 7 is slurry channel design schematic diagram.
The specific embodiment
For the present invention is become apparent, hereby with preferred embodiment, be described in detail below.In embodiment chemical substance used be precipitated calcium carbonate purchased from Jiande City Tianshi Calcium Carbonate Limited Liability Company, thickener guar gum or cation guar gum be purchased from Hangzhou Yinhu Chemical Co., Ltd, blowing agent is purchased from golden More's chemicals Co., Ltd.
Embodiment
As shown in Figure 1, distribution apparatus structural representation for foamed slurry, the distribution apparatus of described foamed slurry comprises foamed slurry generation device 1, material storage device 2, foamed slurry buffer storage 3, screw pump 4, stable-pressure device 5 and distributor 6 reflux, foamed slurry generation device 1, foamed slurry buffer storage 3, screw pump 4, stable-pressure device 5, distributor 6 and the material storage device 2 that refluxes are connected successively, and the material storage device 2 that refluxes connects foamed slurry buffer storage 3.
Described foamed slurry generation device 1 connects fluid current meter and the gaseous mass current meter of solid masses meausring apparatus, magnetic strength.As shown in Figure 2, described backflow material storage device 2 comprises the material storage device body 21 that refluxes, the material storage device body 21 that refluxes has the material of backflow import 22 and the material outlet 23 that refluxes, and in the material storage device body 21 that refluxes, in the position of refluxing material import 22 and reflux between material outlet 23, is provided with vibrating screen 24 as shown in Figure 3.Described foamed slurry buffer storage 3 be one with the tank container of agitating device.Described screw pump 4 is frequency conversion type screw pump.As shown in Figure 4, described stable-pressure device 5 comprises stable-pressure device body 51, the bottom of stable-pressure device body 51 is provided with slurry outlet 52, top is provided with slurry import 53, top is provided with relief valve 54, and the position in stable-pressure device 5 between slurry import 53 and slurry outlet 52 is provided with slit 55 as shown in Figure 5.As shown in Figure 6, described distributor 6 comprises distributor shell 61, in distributor shell 61, be provided with slurry passage 62, as shown in Figure 7, described slurry passage 62 has cylindrical tapered configuration, on the sidewall of distributor shell 61 and slurry passage 62, be respectively equipped with the first gap nozzle 63 and the second gap nozzle 64, the first gap nozzles 63 are corresponding with the position of the second gap nozzle 64.The cross section of described distributor shell 61 is circular.The backflow foamed slurry discharging through the material storage device 2 that refluxes further mixes under agitator effect in foamed slurry buffer storage 3 with the fresh foamed slurry of foamed slurry generation device 1 discharge, and deliver to stable-pressure device 5 filtrations, voltage stabilizing, current stabilization by screw pump 4, for distributor 6, distribute, form a feed circulation, compartment system, the feed part of this circulatory system can reach flow and the stable flow velocity of design, thereby guarantees that foamed slurry is evenly distributed along banner.
The distribution apparatus concrete operation step of described foamed slurry is:
(1) by solid masses meausring apparatus, weighing beating degree is that 35 ° of SR, quality are 232g offal, the broken mixed slurry of offal cigarette, weigh again wood pulp 33g, 0.4g thickener guar gum, the 16g calcium carbonate of 35 ° of SR of beating degree, with the fluid current meter metering 97.4g tobacco coating fluid of magnetic strength, the blowing agent of 2g, by gas mass velocity, be metered into the air of 380g, in foamed slurry generation device 1, be made into slurry concentration and be 5% foamed slurry.
(2) foamed slurry being made into by foamed slurry generation device 1 keeps fiber good distribution in foam under pipeline is transported in foamed slurry buffer storage 3 the further stirring action at 200r/min.
(3) now, the slurry of screw pump 4 in carrying in foamed slurry buffer storage 3 under the rotating speed of 600r/min, the frequency conversion effect of this process based on screw pump 4 can maintain all the time carries that 200g/min slurry is stable, pressure 0.25Mpa is constant.
(4) be transported to first elimination solid content and long fiber wherein under the slit filtration of inner 0.25mm size of slurry in stable-pressure device 5, avoided foamed slurry in distributor 6 due to solid content or long stapled delay, obstruction etc. and can not be uniformly distributed, now, because screw pump is constantly ceaselessly for this device conveying feed liquid, pressure 0.25Mpa stablize, when its inner pressure is greater than 0.25Mpa, the relief valve that top arranges starts release pressure, keeps this device internal pressure 0.25Mpa constant; On the other hand, this device can be stablized inner foamed slurry stream, and what make that this foamed slurry can be even, continuous transfers to distributor 6, so can be for distributor 6 be smooth and easy, be uniformly distributed necessary condition be provided.
(5) under stable-pressure device 50.25Mpa pressure-acting, foamed slurry from the pipeline that is connected with stable-pressure device 5 with certain speed at the uniform velocity enter distributor 6, described distributor 6 is bar type distributor, the gradually reducing pipeline structure of its inner slurry passage has overcome because foamed slurry is subject to drag effect to produce pressure drop at flow process, make foamed slurry can in whole distributor length, keep that 0.25Mpa pressure and speed 25m/min's is constant, thereby spray with 120m/min homogeneous speed via the equally distributed slit perpendicular to distributor axis, foamed slurry can be uniformly distributed.The spouting velocity of foamed slurry is preferably slightly lower than shaping wet end speed, foamed slurry is moderately stretched at shaping wet end, foamed slurry attenuate and area coverage are increased, can alleviate post forming load on the one hand, be beneficial to foamed slurry and be evenly distributed, obtain better forming effect.
Claims (10)
1. the distribution apparatus of a foamed slurry, it is characterized in that, comprise foamed slurry generation device (1), reflux and expect storage device (2), foamed slurry buffer storage (3), screw pump (4), stable-pressure device (5) and distributor (6), foamed slurry generation device (1), foamed slurry buffer storage (3), screw pump (4), stable-pressure device (5), distributor (6) and the material storage device (2) that refluxes are connected successively, and the material storage device (2) that refluxes connects foamed slurry buffer storage (3).
2. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, described foamed slurry generation device (1) connects fluid current meter and the gaseous mass current meter of solid masses meausring apparatus, magnetic strength.
3. the distribution apparatus of foamed slurry as claimed in claim 1, it is characterized in that, described backflow material storage device (2) comprises the material storage device body (21) that refluxes, the material storage device body (21) that refluxes has the import (22) of the material of backflow and the material outlet (23) that refluxes, and is positioned at the position of refluxing material import (22) and refluxing between material outlet (23) and is provided with vibrating screen (24) in the material storage device body (21) that refluxes.
4. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, described foamed slurry buffer storage (3) be one with the tank container of agitating device.
5. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, described screw pump (4) is frequency conversion type screw pump.
6. the distribution apparatus of foamed slurry as claimed in claim 1, it is characterized in that, described stable-pressure device (5) comprises stable-pressure device body (51), the bottom of stable-pressure device body (51) is provided with slurry outlet (52), top is provided with slurry import (53), top is provided with relief valve (54), and the position being positioned in stable-pressure device (5) between slurry import (53) and slurry outlet (52) is provided with slit (55).
7. the distribution apparatus of foamed slurry as claimed in claim 1, it is characterized in that, described distributor (6) comprises distributor shell (61), in distributor shell (61), be provided with slurry passage (62), described slurry passage (62) has cylindrical tapered configuration, on the sidewall of distributor shell (61) and slurry passage (62), be respectively equipped with the first gap nozzle (63) and the second gap nozzle (64), the first gap nozzle (63) is corresponding with the position of the second gap nozzle (64).
8. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, the cross section of described distributor shell (61) is circular, square or other polygon.
9. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, described foamed slurry by natural or synthetic fiber with comprise can forming by foaming liquid of water, surfactant, filler, tobacco extract.
10. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, the concentration of described foamed slurry is 1.5%～8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257768.7A CN103993498B (en) | 2014-06-11 | 2014-06-11 | A kind of distribution apparatus of foamed slurry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410257768.7A CN103993498B (en) | 2014-06-11 | 2014-06-11 | A kind of distribution apparatus of foamed slurry |
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| CN103993498A true CN103993498A (en) | 2014-08-20 |
| CN103993498B CN103993498B (en) | 2016-03-23 |
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| CN201410257768.7A Active CN103993498B (en) | 2014-06-11 | 2014-06-11 | A kind of distribution apparatus of foamed slurry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11255051B2 (en) | 2017-11-29 | 2022-02-22 | Kimberly-Clark Worldwide, Inc. | Fibrous sheet with improved properties |
| US11313061B2 (en) | 2018-07-25 | 2022-04-26 | Kimberly-Clark Worldwide, Inc. | Process for making three-dimensional foam-laid nonwovens |
| US11591755B2 (en) | 2015-11-03 | 2023-02-28 | Kimberly-Clark Worldwide, Inc. | Paper tissue with high bulk and low lint |
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| US3871952A (en) * | 1972-04-07 | 1975-03-18 | Wiggins Teape Res Dev | Manufacture of non-woven fibrous material from a foamed furnish |
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| CN1127816A (en) * | 1994-07-13 | 1996-07-31 | 默尔恩莱克有限公司 | Method and arrangement for producing a foam-formed fibre or paper web |
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| CN1341183A (en) * | 1999-02-25 | 2002-03-20 | 阿尔斯特罗姆玻璃纤维有限公司 | Foam process web production with foam dilution |
| CN101008162A (en) * | 2007-01-19 | 2007-08-01 | 华南理工大学 | Square cone slurry-distribution general tube for high speed paper machine head box and its production method |
| CN203080353U (en) * | 2013-02-04 | 2013-07-24 | 北京电子科技职业学院 | Pulp spraying system of pulp papermaking |
| CN103572636A (en) * | 2012-07-25 | 2014-02-12 | 托斯克科技股份公司 | System for producing a cellulose web from an aqueous suspension of cellulose fibers |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1329409A (en) * | 1972-04-06 | 1973-09-05 | Wiggins Teape Research Dev Ltd | Method of and apparatus for manufacturing paper or other non- woven fibrous material |
| US3871952A (en) * | 1972-04-07 | 1975-03-18 | Wiggins Teape Res Dev | Manufacture of non-woven fibrous material from a foamed furnish |
| US4443297A (en) * | 1980-08-18 | 1984-04-17 | James River-Dixie/Northern, Inc. | Apparatus and method for the manufacture of a non-woven fibrous web |
| US6355142B1 (en) * | 1990-11-01 | 2002-03-12 | Fort James Corporation Of Virginia | Method of controlling headbox jet velocity for foamed furnishes |
| CN1127816A (en) * | 1994-07-13 | 1996-07-31 | 默尔恩莱克有限公司 | Method and arrangement for producing a foam-formed fibre or paper web |
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| CN101008162A (en) * | 2007-01-19 | 2007-08-01 | 华南理工大学 | Square cone slurry-distribution general tube for high speed paper machine head box and its production method |
| CN103572636A (en) * | 2012-07-25 | 2014-02-12 | 托斯克科技股份公司 | System for producing a cellulose web from an aqueous suspension of cellulose fibers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11591755B2 (en) | 2015-11-03 | 2023-02-28 | Kimberly-Clark Worldwide, Inc. | Paper tissue with high bulk and low lint |
| US11255051B2 (en) | 2017-11-29 | 2022-02-22 | Kimberly-Clark Worldwide, Inc. | Fibrous sheet with improved properties |
| US11313061B2 (en) | 2018-07-25 | 2022-04-26 | Kimberly-Clark Worldwide, Inc. | Process for making three-dimensional foam-laid nonwovens |
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| CN103993498B (en) | 2016-03-23 |
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