CN103993498B - A kind of distribution apparatus of foamed slurry - Google Patents
A kind of distribution apparatus of foamed slurry Download PDFInfo
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- CN103993498B CN103993498B CN201410257768.7A CN201410257768A CN103993498B CN 103993498 B CN103993498 B CN 103993498B CN 201410257768 A CN201410257768 A CN 201410257768A CN 103993498 B CN103993498 B CN 103993498B
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Abstract
The invention provides a kind of distribution apparatus of foamed slurry, it is characterized in that, comprise foamed slurry generation device, backflow material 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 are connected successively with backflow material storage device, and backflow material storage device connects foamed slurry buffer storage.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 conveying; The present invention defines fill cycles, a 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 paper of manufacturing paper with pulp is easy to regulate; Apparatus of the present invention features simple structure, improves the concentration of slurry during net part forming, not only saves a large amount of water, and saves a large amount 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 process of constantly dewatering, and this process is made up of wet end, press section and drying section.Usually, by gravity, pulse or vacuum action, online low concentration slurry (0.1% ~ 1.0%) is dewatered to the mass dryness fraction of 15% ~ 25%; Then the effect by press section mechanical force takes off water further to 33% ~ 55%; Finally by under the evaporation of drying section many groups drying cylinder, moisture residual in paper web is continued to deviate from, make paper web mass dryness fraction reach particular requirement, the carrying out of this series of dehydration needs to consume a large amount of energy; Usually, China's papermaking unit product comprehensive energy consumption will be: ton paper pulp 0.18 ~ 0.48 ton of mark coal higher than international most advanced level, ton paper and paperboard is higher than international most advanced level by 120%.
Based on the research to paper making process, now formed on production line of paper machine that wet end is energy-conservation, press section is energy-conservation, strengthening dried that heat transfer is energy-conservation, ventilating system is energy-conservation, a series of conservation measures such as heat recovery energy-saving and energy system diagnosis and optimisation technique, decrease the comprehensive energy consumption of papermaking unit product to a certain extent.From energy-conservation angle, the dewatering improving 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 contacts is frequent, interfibrous collision and Mechanical entanglement etc. act on and form fleeces agglomerate, these wadding agglomerates are discrete, discontinuous, now slurries can not be uniformly distributed, and slurry can not be made can to become under higher fiber concentration continuously, uniform 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 have good mobility under the dense state of height, fiber can be uniformly distributed, be easy to be shaped, a large amount of energy can be saved.
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, backflow material 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 are connected successively with backflow material storage device, and backflow material storage device connects foamed slurry buffer storage.
Preferably, described foamed slurry generation device connection solid masses meausring apparatus, the fluid current meter of magnetic strength and gaseous mass current meter.
Preferably, described backflow material storage device comprises backflow material storage device body, backflow material storage device body has backflow material import and the outlet of backflow material, and the position in backflow material storage device body between backflow material import and the outlet of backflow material is provided with vibrating screen.
Preferably, described foamed slurry buffer storage is a tank container with 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, slurry passage is provided with in distributor shell, described slurry passage has cylindrical tapered configuration, the sidewall of distributor shell and slurry passage is 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 synthesis fiber with comprise water, surfactant, filler, can the forming by foaming liquid of 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 conveying; The present invention defines fill cycles, a 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 paper of manufacturing paper with pulp is easy to regulate; Apparatus of the present invention features simple structure, improves the concentration of slurry during net part forming, not only saves a large amount of water, and saves a large amount of energy.
2, foamed slurry generation device of the present invention is furnished with solid masses meausring apparatus, the fluid current meter of magnetic strength and gaseous mass current meter, and can accurately control to foam when foamed slurry concentration.
3, vibrating screen is provided with in backflow material storage device of the present invention; its effect is the filter foam slurry distribution removal process long fiber that may be mixed with or solids and removes part bubble; mix with the fresh slurry from foamed slurry generation device, guarantee that mixed slurry gas-liquid content maintains in specific scope.
4, foamed slurry buffer storage of the present invention is a tank container containing agitating device, it can mix the recovery foamed slurry of the fresh foam slurry sent here in foamed slurry generation device and the conveying of backflow material storage device, and the blowing ratio of foamed slurry also can be made to keep constant simultaneously.
5, screw pump of the present invention is frequency conversion type screw pump, the rotating speed of motor is controlled with frequency converter, according to the difference of concentration will carrying slurry, control as much as possible to export the stable of tolerance, thus energy-conservation object can be reached on the basis that stable foam stream of slurry is provided.
6, there is slit the inside of stable-pressure device of the present invention, by means of the pressure that screw pump provides, foamed slurry being filtered, elimination solid content wherein and long fiber, avoiding foamed slurry can not be uniformly distributed due to solid content or long stapled delay, blocking etc. when distributing.The top of stable-pressure device is provided with relief valve, in view of screw pump conveying slurry pressure be stablize, continuous print, when device internal pressure is excessive, relief valve release pressure can be passed through, holding device inner pressure constant on the one hand, can make the foamed slurry stream in stabilising arrangement on the other hand, what enable foamed slurry stream uniformly continous transfers 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 be connected with stable-pressure device with certain pressure entering at the uniform velocity, the tapered configuration of inner circular overcomes because foamed slurry produces pressure drop at flow process by drag effect, make foamed slurry can keep the constant of pressure and speed in whole distributor length, thus via the equally distributed ejection of the slit perpendicular to bar type distributor axis, foamed slurry is uniformly distributed.
Accompanying drawing explanation
Fig. 1 is the distribution apparatus structural representation of foamed slurry;
Fig. 2 is backflow material storage device structural representation;
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.
Detailed description of the invention
For making the present invention become apparent, hereby with preferred embodiment, be described in detail below.Chemical substance used in embodiment be precipitated calcium carbonate purchased from Jiande City Tianshi Calcium Carbonate Limited Liability Company, thickener guar gum or cation guar gum are purchased from Hangzhou Yinhu Chemical Co., Ltd, and blowing agent is purchased from golden More Chemical Company.
Embodiment
As shown in Figure 1, for the distribution apparatus structural representation of foamed slurry, the distribution apparatus of described foamed slurry comprises foamed slurry generation device 1, backflow material 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 are connected successively with backflow material storage device 2, and backflow material storage device 2 connects foamed slurry buffer storage 3.
Described foamed slurry generation device 1 connects solid masses meausring apparatus, the fluid current meter of magnetic strength and gaseous mass current meter.As shown in Figure 2, described backflow material storage device 2 comprises backflow material storage device body 21, backflow material storage device body 21 has backflow material import 22 and the outlet 23 of backflow material, and the position in backflow material storage device body 21 between backflow material import 22 and the outlet 23 of backflow material is provided with vibrating screen 24 as shown in Figure 3.Described foamed slurry buffer storage 3 is a tank container with 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, slurry passage 62 is provided with in distributor shell 61, as shown in Figure 7, described slurry passage 62 has cylindrical tapered configuration, the sidewall of distributor shell 61 and slurry passage 62 is respectively equipped with the first gap nozzle 63 and the second gap nozzle 64, first gap nozzle 63 corresponding with the position of the second gap nozzle 64.The cross section of described distributor shell 61 is circular.The backflow foamed slurry discharged through backflow material storage device 2 mixes under agitator effect in foamed slurry buffer storage 3 further with the fresh foamed slurry that foamed slurry generation device 1 discharges, and after deliver to that stable-pressure device 5 filters through screw pump 4, voltage stabilizing, current stabilization, distribute for distributor 6, form fill cycles, a compartment system, the feed section of this circulatory system can reach the flow of design and stable flow velocity, thus guarantees that foamed slurry is evenly distributed along banner.
The distribution apparatus concrete operation step of described foamed slurry is:
(1) weighed by solid masses meausring apparatus that beating degree is 35 ° of SR, quality is 232g offal, the broken mixed slurry of offal cigarette, weigh wood pulp 33g, 0.4g thickener guar gum, the 16g calcium carbonate of beating degree 35 ° of SR again, with the fluid current meter metering 97.4g tobacco coating fluid of magnetic strength, the blowing agent of 2g, be metered into the air of 380g by gas mass velocity, in foamed slurry generation device 1, be made into the foamed slurry that slurry concentration is 5%.
(2) distribution that fiber is good is in the foam kept under the stirring action of the foamed slurry be made into by foamed slurry generation device 1 further at 200r/min in Cemented filling to foamed slurry buffer storage 3.
(3) now, screw pump 4 carries the slurry in foamed slurry buffer storage 3 under the rotating speed of 600r/min, and this process can maintain all the time based on the frequency conversion effect of screw pump 4 that conveying 200g/min slurry is stable, pressure 0.25Mpa is constant.
(4) slurry in stable-pressure device 5 first elimination solid content wherein and long fiber under the slit filtration of inner 0.25mm size is transported to, avoid foamed slurry can not be uniformly distributed due to solid content or long stapled delay, blocking etc. in distributor 6, now, because the screw pump moment is ceaselessly for this device conveying feed liquid, pressure 0.25Mpa stablize, when the pressure of its inside is greater than 0.25Mpa, the relief valve that top is arranged starts release pressure, keeps this device internal pressure 0.25Mpa constant; On the other hand, this device can stablize inner foamed slurry stream, enable this foamed slurry evenly, continuous print transfers to distributor 6, and then can smooth and easy for distributor 6, be uniformly distributed and provide necessary condition.
(5) under the effect of stable-pressure device 50.25Mpa pressure, foamed slurry from the pipeline be 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 overcomes because foamed slurry produces pressure drop at flow process by drag effect, foamed slurry is kept in whole distributor length, and 0.25Mpa pressure and speed 25m/min's is constant, thus via the equally distributed slit perpendicular to distributor axis with the homogeneous speed ejection of 120m/min, 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, the thinning and area coverage of foamed slurry is increased, post forming load can be alleviated on the one hand, be beneficial to foamed slurry to be evenly distributed, obtain better forming effect.
Claims (9)
1. the distribution apparatus of a foamed slurry, it is characterized in that, comprise foamed slurry generation device (1), backflow material 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) are connected successively with backflow material storage device (2), and backflow material storage device (2) connects foamed slurry buffer storage (3); Described distributor (6) comprises distributor shell (61), slurry passage (62) is provided with in distributor shell (61), described slurry passage (62) has cylindrical tapered configuration, the sidewall of distributor shell (61) and slurry passage (62) is 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).
2. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, described foamed slurry generation device (1) connection solid masses meausring apparatus, the fluid current meter of magnetic strength and gaseous mass current meter.
3. the distribution apparatus of foamed slurry as claimed in claim 1, it is characterized in that, described backflow material storage device (2) comprises backflow material storage device body (21), backflow material storage device body (21) has backflow material import (22) and backflow material outlet (23), and in backflow material storage device body (21), the position be positioned between backflow material import (22) and backflow material outlet (23) is provided with vibrating screen (24).
4. the distribution apparatus of foamed slurry as claimed in claim 1, it is characterized in that, described foamed slurry buffer storage (3) is a tank container with agitating device.
5. the distribution apparatus of foamed slurry as claimed in claim 1, it 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 be 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, the cross section of described distributor shell (61) is circular, square or other polygon.
8. the distribution apparatus of foamed slurry as claimed in claim 1, is characterized in that, described foamed slurry by natural or synthesis fiber with comprise water, surfactant, filler, can the forming by foaming liquid of tobacco extract.
9. the distribution apparatus of foamed slurry as claimed in claim 1, it is characterized in that, the concentration of described foamed slurry is 1.5% ~ 8%.
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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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| CN201410257768.7A CN103993498B (en) | 2014-06-11 | 2014-06-11 | A kind of distribution apparatus of foamed slurry |
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| CN103993498B true CN103993498B (en) | 2016-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11788221B2 (en) | 2018-07-25 | 2023-10-17 | Kimberly-Clark Worldwide, Inc. | Process for making three-dimensional foam-laid nonwovens |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112018007748B1 (en) | 2015-11-03 | 2022-07-26 | Kimberly-Clark Worldwide, Inc. | PAPER FABRIC PRODUCT, CLEANING PRODUCT, AND, PERSONAL CARE ABSORBING ARTICLE |
| KR102165232B1 (en) | 2017-11-29 | 2020-10-13 | 킴벌리-클라크 월드와이드, 인크. | Fiber sheet with improved properties |
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Patent Citations (9)
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| 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11788221B2 (en) | 2018-07-25 | 2023-10-17 | Kimberly-Clark Worldwide, Inc. | Process for making three-dimensional foam-laid nonwovens |
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