CN102580555A - Continuous production process and equipment for micro-filtration and ultra-filtration membranes - Google Patents
Continuous production process and equipment for micro-filtration and ultra-filtration membranes Download PDFInfo
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- CN102580555A CN102580555A CN2012100546878A CN201210054687A CN102580555A CN 102580555 A CN102580555 A CN 102580555A CN 2012100546878 A CN2012100546878 A CN 2012100546878A CN 201210054687 A CN201210054687 A CN 201210054687A CN 102580555 A CN102580555 A CN 102580555A
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Abstract
The invention relates to a continuous production process and equipment for micro-filtration and ultra-filtration membranes. The equipment comprises an uncoiling mechanism, a cloth receiving mechanism, a cloth storage mechanism, a glue spreader, a bleacher, a post-processing machine, a drying oven and a coiling mechanism, which are sequentially connected through conveyor rollers. The process comprises the following steps of: firstly, uncoiling a non-woven cloth roll, sequentially processing the uncoiled non-woven cloth by the steps of cloth storage, glue-spreading, bleaching, air-knife drying, post-processing, air-knife drying, drying and coiling of finished product; secondly, before the glue spreading of the former non-woven cloth roll is finished, connecting the next non-woven cloth roll with the former non-woven cloth roll and releasing the stored non-woven cloth during the connection of cloth; thirdly, after the connection of cloth is finished, starting to uncoil the next non-woven cloth roll and continuously producing a new roll of non-woven cloth along with the former roll of non-woven cloth. The continuous production process and the equipment disclosed by the invention have the beneficial effects that: the continuity and the automation of the key steps of scraping the membrane, bleaching, post-processing, drying and coiling of finished membranes in the membrane forming process of flat membranes are realized; the continuous changing of cloth and the continuous coiling can be achieved without stopping scraping of the membranes.
Description
Technical field
The present invention relates to a kind of continuous production processes and equipment thereof of little, milipore filter.
Background technology
Film is to have the Selective Separation materials with function.Difference (or being called molecular cut off) according to membrane aperture can be divided into micro-filtration membrane, milipore filter, NF membrane and reverse osmosis membrane with film.
Membrane separation technique has been widely used in each industrial circle at present, and has made desalinization, production of caustic soda, and the variation of essence has taken place in multiple traditional production looks such as Dairy Processing.Membrane separation technique has formed the industrial technology system of a considerable scale.U.S.'s official document was once said " do not have a kind of technology at present, can be employed so widely as membrane technology ".World-renowned chemical industry and film expert; American National academician of the Chinese Academy of Engineering; The doctor of North America hymenology meeting president Li Nian says when visiting on invitation China the Ministry of Chemical Industry and affiliated university in 1994: " want to develop chemical industry and just must develop membrane technology "; He also approves of popular in the world saying " who has grasped membrane technology, and who has just grasped the future of chemical industry " very much.Membrane separation technique has played crucial effect to development and national economy, has very vast potential for future development.
Little, hyperfiltration technique comes across last century end, along with the application of reverse osmosis membrane and assembly as the important branch of membrane separation technique; Little, hyperfiltration technique has obtained developing rapidly; In recent years, the production development speed of using hyperfiltration technique increases progressively with the 12-30% growth rate, has great potential market.
Characteristics such as little, hyperfiltration technique has simple, easy to operate, the no phase transformation of equipment, no chemical change, treatment effeciency is high and energy-conservation; Japan researches and develops little, hyperfiltration technique as the emphasis basic technology of 21 century; The America and Europe also little, hyperfiltration technique as the power-saving technology emphasis, drop into a large amount of manpowers and material resources.
In recent years; Application little, hyperfiltration technique forward high throughput develops; MBR technology (the Membrane Bio-reactor of sewage treatment industry particularly; The membrane bioreactor water technology is the efficient biochemical water technology that a kind of biotechnology combines with membrane technology), as the technology of efficiently disposing of sewage of new development in recent years.And ultrafiltration and micro-filtration technology are its core technologies, occupy certain expense ratio, will have billions of first markets future soon.China in 2011 has become the whole world and has used the maximum country of the MBR technical finesse water yield.In May, 2011; National Development and Reform Commission has issued in the new revision " catalogue (basis in 2011) is instructed in industry restructuring " and has particularly pointed out; " aspect sewage Prevention Technique equipment, encourage in the new edition catalogue: 200,000 ton per day municipal sewage treatment outfits (dephosphorization denitrogenation); Sludge drying and incinerating technical equipment (subtracting the quantity of slag more than 90%); Submerged membrane bioreactor (the COD clearance is more than 90%); Ceramic vacuum filter (vacuum: 0.09～0.098 MPa, hole: 0.2 micron～20 microns); Middle samll cities and towns integrated sewage water is handled Technology Equipment; Excusing from death coupled method and biomembrance process treatment of high concentration organic wastewater technical equipment.”
All the time, U.S.A, day, Europe are in the forward position of world's membrane technology all the time, and the direction of leading world membrane technology development has monopolized film market, the world basically.Their characteristics are that research and development strength is strong, product variety is many, seriation.At present the membrane material of China is main with imported product, and the product that has an independent intellectual property right is introducing product and technology 80% or more seldom, film industry integral body be in technical merit lower, research and develop the more weak stage of strength, bigger gap is arranged compared with developed countries.
At present, abroad be that the hollow-fibre membrane or the production technology of flat sheet membrane and equipment all are in higher level; Domestic production equipment little, milipore filter is the equipment of producing hollow-fibre membrane mostly; Production technology and equipment level have also had considerable progress; But the production of flat sheet membrane is because the restriction of research and development and working condition; Production technology and equipment rest on the level in workshop basically, and flat sheet membrane is compared with hollow-fibre membrane, have greater advantage in the MBR application.
Dull and stereotyped little, milipore filter original production process process: film liquid preparation → film liquid filtration → film liquid deaeration → knifing → rinsing → post processing → drying → finished film volume.
This process is actual can be divided into the two large divisions: film liquid set-up procedure and film forming procedure.
Film liquid set-up procedure comprises: the deaeration of film liquid preparation → film liquid filtration → film liquid;
Film forming procedure comprises: knifing → rinsing → post processing → drying → finished film volume.
Film liquid set-up procedure has determined the kind of film, and film forming procedure has determined quality, production scale, the efficient of film.
Yet the present enterprise of domestic every other production flat sheet membrane comprises the production equipment in our past, and above-mentioned all process steps all separate, and all by the corresponding special equipment completion of manually-operated, efficient is very low, particularly film forming procedure for the per pass operation.
Knifing: by manual work lift that knifing machine on the yardage roll, adjustment knifing machine running parameter, pour mask liquid are gone into the scraper groove, started knifing machine, knifing, knifing finish the back manual work and carry the film volume of having scraped off, accomplish and scrape membrane process.And after knifing machine has been scraped a volume film; Because the film liquid that adheres in the scraper box runs into airborne moisture meeting gel; Therefore must thoroughly clean scraper box, scraper, drum face before the knifing carrying out next time; Remove residue film liquid, can carry out knifing operation next time drying just afterwards.
Rinsing: by manual work lift that the film volume of having scraped is gone up potcher, adjustment rinsing parameter, opens washings, opened potcher, rinsing, rinsing finish that the good film volume of rinsing is carried in the back manual work off, the good film of placing rinsing twist in control water drench quarrel drench dried.
Post processing: by manual work lift drench that dried film volume is gone up post-processor, adjustment processor parameter, opens post-processor, soaked the glycerine post processing, post processing finish the back manual work carry the film volume handled well off, place the film of having handled well twist in control glycerine drench quarrel drench dried.
Dry: as to lift by manual work and to have drenched dried film volume and go up in drying oven, adjustment drying parameter, oven dry, the drying course and to adjust drying parameter, oven dry at any time according to the film oven-dried condition and finish the back manual work to carry film volume, the warehouse-in of having dried off subsequent use.
Summary of the invention
Technical problem to be solved by this invention is: a kind of continuous production processes and equipment thereof of little, milipore filter are provided, improve production efficiency little, milipore filter.
The technical solution adopted for the present invention to solve the technical problems is: a kind of continuous production processes of little, milipore filter; At first nonwoven fabric roll unreels; The nonwoven of emitting stores up cloth, frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling successively; Before treating that a volume nonwoven fabric roll will frictioning have been scraped, next volume nonwoven fabric roll and last one is rolled up nonwoven fabric roll and is connect cloth, the nonwoven release that when connecing cloth, stores; Guarantee that follow-up frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling step still carry out continuously; After connecing the cloth completion, next volume nonwoven fabric roll begins to unreel, and a new volume nonwoven is along with a last volume nonwoven stores up cloth, frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling successively.
A kind of continuous production equipment of little, milipore filter; Comprise unreeling structure, meet cloth mechanism, store up cloth mechanism, spreading machine, potcher, post-processor, drying oven and rolling-up mechanism; Each mechanism connects through conveying roller successively; Nonwoven fabric roll unreels through unreeling structure; Nonwoven is successively through meeting cloth mechanism, storage cloth mechanism, get into spreading machine and carry out frictioning, and the nonwoven behind the frictioning gets into potcher, post-processor, drying oven, rolling-up mechanism successively and carries out rinsing, post processing, oven dry, finished product rolling, treat one roll up nonwoven fabric roll and will scrape before; Next volume nonwoven fabric roll is placed on the unreeling structure; Next volume nonwoven fabric roll on the unreeling structure draws cloth to meeting cloth mechanism and connecing cloth through meeting cloth mechanism with a last volume nonwoven fabric roll, and the nonwoven that storage cloth mechanism stores when meeting cloth mechanism and connect cloth begins to discharge, connect the cloth completion after; Unreeling structure begins to unreel, and a new volume nonwoven is along with a last volume nonwoven gets into storage cloth mechanism, spreading machine, potcher, post-processor, drying oven, rolling-up mechanism successively.
Further limit,, reduce the oven dry energy consumption, guarantee drying effect, be arranged on the Air knife mechanism that dries up its surface moisture when nonwoven transfers out potcher and post-processor on potcher and the post-processor in order to guarantee the moisture in the aftertreatment fluid.
Further limiting, is the two-operating positions rotary structure at unreeling structure and rolling-up mechanism, and cutting-up equipment is set on the rolling-up mechanism, when the needs change of lap, draws and is broken into article, and it is sticked on the new Scroll, carries out continuous rolling.
Further limit, meet cloth mechanism and comprise pressure roller, air-suction trunk, have the cloth of connecing platform on the air-suction trunk; Connect and have a plurality of wind inlets on the cloth platform, air-suction trunk is adsorbed on nonwoven through the wind inlet air draught and connects on the cloth platform, and the nonwoven that is fed forward connects Bu Tai and pressure roller through air-suction trunk successively; When connecing cloth; Pressure roller is pushed down a volume nonwoven, and the end of a last volume nonwoven and new next volume nonwoven of introducing is attracted to and connects on the cloth platform, splices.
Further limit, pressing plate is set both sides up and down at the cloth platform that connects of air-suction trunk, pressing plate and pressure roller promote compress through cylinder, and when needs manual work cutting-up nonwoven formed smooth end, pressing plate pressed down, and nonwoven is pressed on connects the enterprising pedestrian worker's cutting-up of cloth platform.
The invention has the beneficial effects as follows: realized serialization, automation that committed step knifing, rinsing, post processing, drying, finished film in the flat sheet membrane film forming procedure are rolled up, can under the situation that does not stop knifing, change cloth continuously, rolling continuously.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation that meets cloth mechanism of the present invention;
Among the figure: 1. unreeling structure, 2. meet cloth mechanism, 21. pressure rollers, 22. air-suction trunks, 221. connect the cloth platform, 23. pressing plates; 3. store up cloth mechanism, 4. spreading machine, 5. potcher, 6. post-processor, 7. drying oven; 8. rolling-up mechanism, 9. cutting-up equipment, 10. Air knife mechanism, 11. scraper boxes, 12. haulage gears.
The specific embodiment
A kind of continuous production processes of little, milipore filter; At first nonwoven fabric roll unreels; The nonwoven of emitting stores up cloth, frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling successively; Before treating that a volume nonwoven fabric roll will frictioning have been scraped, next volume nonwoven fabric roll and last one is rolled up nonwoven fabric roll and is connect cloth, the nonwoven release that when connecing cloth, stores; Guarantee that follow-up frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling step still carry out continuously; After connecing the cloth completion, next volume nonwoven fabric roll begins to unreel, and a new volume nonwoven is along with a last volume nonwoven stores up cloth, frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling successively.
As shown in Figure 1; A kind of continuous production equipment of little, milipore filter; Comprise unreeling structure 1, meet cloth mechanism 2, store up cloth mechanism 3, spreading machine 4, potcher 5, post-processor 6, drying oven 7 and rolling-up mechanism 8; Each mechanism connects through conveying roller successively, and nonwoven fabric roll unreels through unreeling structure 1, and nonwoven is successively through meeting cloth mechanism 2, storage cloth mechanism 3, getting into spreading machine 4 and carry out frictioning; Nonwoven behind the frictioning gets into potcher 5, post-processor 6, drying oven 7, rolling-up mechanism 8 successively and carries out rinsing, post processing, oven dry, finished product rolling; Before treating that a volume nonwoven fabric roll will have been scraped, next volume nonwoven fabric roll is placed on the unreeling structure 1, and next the volume nonwoven fabric roll on the unreeling structure 1 draws cloth to meeting cloth mechanism 2 and connecing cloth through meeting cloth mechanism 2 with a last volume nonwoven fabric roll; The nonwoven that storage cloth mechanism 3 stores when meeting cloth mechanism 2 and connect cloth begins to discharge; After connecing the cloth completion, unreeling structure 1 begins to unreel, and a new volume nonwoven is along with a last volume nonwoven gets into storage cloth mechanism 3, spreading machine 4, potcher 5, post-processor 6, drying oven 7, rolling-up mechanism 8 successively.
Be arranged on the Air knife mechanism 10 that dries up its surface moisture when nonwoven transfers out potcher 5 with post-processor 6 on potcher 5 and the post-processor 6.The Air knife mechanism 10 that is provided with on the potcher 5 has reduced the moisture in the potcher as far as possible and has been brought into post-processor 6; The moisture that the Air knife mechanism 10 that is provided with on the post-processor 6 has reduced in the post-processor 6 as far as possible is brought into drying oven 7, reduces the energy consumption for drying of drying oven 7.
Is the two-operating positions rotary structure at unreeling structure 1 with rolling-up mechanism 8.Cutting-up equipment 9 is set on the rolling-up mechanism 8, when the needs change of lap, draws and be broken into article, and it is sticked on the new Scroll, carry out continuous rolling.
As shown in Figure 2, meet cloth mechanism 2 and comprise pressure roller 21, air-suction trunk 22, have the cloth of connecing platform 221 on the air-suction trunk 22; Connect and have a plurality of wind inlets on the cloth platform 221, air-suction trunk 22 is adsorbed on nonwoven through the wind inlet air draught and connects on the cloth platform 221, and the nonwoven that is fed forward connects cloth platform 221 and pressure roller 21 through air-suction trunk 22 successively; When connecing cloth; Pressure roller 21 is pushed down a volume nonwoven, and the end of a last volume nonwoven and new next volume nonwoven of introducing is attracted to and connects on the cloth platform 221, splices.The cloth platform that connects at air-suction trunk 22 also is provided with pressing plate 23 in both sides about in the of 221, and pressing plate 23 promotes compress with pressure roller 21 through cylinder, and when the artificial cutting-up nonwoven of needs formed smooth end, pressing plate 23 pressed down, and nonwoven is pressed on connects cloth platform 221 enterprising pedestrian worker's cutting-ups.
Connect cloth mechanism 2 to connect the cloth process following:
1, at first cylinder promotes pressure roller 21 and will go up a volume nonwoven and compress, stop nonwoven and be fed forward, then with the pressing plate 23 of top through the cylinder action, will go up a volume nonwoven and be pressed in and connect cloth platform 221, carry out artificial cutting-up.
2, through air-suction trunk 22 and below pressing plate 23 with next the volume nonwoven carry out artificial cutting-up; Next volume nonwoven behind the cutting-up is still inhaled the connecing on the cloth platform 221 of air-suction trunk 22, and this moment, the pressing plate 23 of both sides all lifted through cylinder up and down, with inhale the smooth end that connects next the volume nonwoven on the cloth platform 221 with on the smooth end of a volume nonwoven splice; After accomplishing splicing; Air-suction trunk 22 is closed, and pressure roller 21 discharges nonwoven, accomplishes connecing cloth.
Whole continuous flow procedure is following:
People's frock nonwoven fabric roll connects this nonwoven fabric roll and draws cloth on a wherein roller of the unreeling structure 1 of two-operating positions rotary structure, adjusts each parameter; Start production line, after waiting to draw cloth and nonwoven fabric roll joint and crossing the scraper box 11 of spreading machine 4, pour mask liquid is gone into scraper box 11 beginning knifing, rinsing, post processing, oven dry, rolling; Can load a volume nonwoven this moment in addition and be distributed on another roller of unreeling structure 1 subsequent usely, just when the nonwoven fabric roll of knifing will have been scraped, open storage cloth mechanism 3 and makes the enough nonwoven of storage cloth mechanism 3 storages; Treat that this volume nonwoven scraped; Start unreeling structure 1 and fall roller, start and meet cloth mechanism 2, store up the nonwoven that cloth mechanism 3 stores this moment and begin to discharge; Connect cloth; Another volume nonwoven that connects can get into knifing, rinsing, post processing, oven dry, winding process along with a last volume nonwoven, and cutting-up equipment 9 severing rolling at any time as required is set on the rolling-up mechanism 8, puts in storage subsequent use.
Unreeling structure 1 all has automatic deviation correction mechanism with rolling-up mechanism 8; Consistent adjustable in order to make each operation different parameters connect the back in operation; Nonwoven haulage gear 12 in the equipment all adopts automatic tension control technology (microcomputer program control), and all important parameters of complete equipment adopt the man-machine interface touch screen operation fully.
Claims (6)
1. the continuous production processes of little a, milipore filter; It is characterized in that: at first nonwoven fabric roll unreels; The nonwoven of emitting stores up cloth, frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling successively; Before treating that a volume nonwoven fabric roll will frictioning have been scraped, next volume nonwoven fabric roll and last one is rolled up nonwoven fabric roll and is connect cloth, the nonwoven release that when connecing cloth, stores; Guarantee that follow-up frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling step still carry out continuously; After connecing the cloth completion, next volume nonwoven fabric roll begins to unreel, and a new volume nonwoven is along with a last volume nonwoven stores up cloth, frictioning, rinsing, air knife drying, post processing, air knife drying, drying, finished product rolling successively.
2. the continuous production equipment of little a, milipore filter; It is characterized in that: comprise unreeling structure (1), meet cloth mechanism (2), store up cloth mechanism (3), spreading machine (4), potcher (5), post-processor (6), drying oven (7) and rolling-up mechanism (8); Each mechanism connects through conveying roller successively; Nonwoven fabric roll unreels through unreeling structure (1); Nonwoven is successively through meeting cloth mechanism (2), storage cloth mechanism (3), getting into spreading machine (4) and carry out frictioning; Nonwoven behind the frictioning gets into potcher (5), post-processor (6), drying oven (7), rolling-up mechanism (8) successively and carries out rinsing, post processing, oven dry, finished product rolling; Before treating that a volume nonwoven fabric roll will have been scraped, next volume nonwoven fabric roll is placed on the unreeling structure (1), and next the volume nonwoven fabric roll on the unreeling structure (1) draws cloth to meeting cloth mechanism (2) and connecing cloth through meeting cloth mechanism (2) with a last volume nonwoven fabric roll; Store up the nonwoven that cloth mechanism (3) stores when connecing cloth and begin to discharge meeting cloth mechanism (2); After connecing the cloth completion, unreeling structure (1) begins to unreel, and a new volume nonwoven is along with a last volume nonwoven gets into storage cloth mechanism (3), spreading machine (4), potcher (5), post-processor (6), drying oven (7), rolling-up mechanism (8) successively.
3. the continuous production equipment of little, milipore filter according to claim 2 is characterized in that: be arranged on the Air knife mechanism (10) that dries up its surface moisture when nonwoven transfers out potcher (5) and post-processor (6) on described potcher (5) and the post-processor (6).
4. the continuous production equipment of little, milipore filter according to claim 2; It is characterized in that: be the two-operating positions rotary structure at described unreeling structure (1) and rolling-up mechanism (8); Cutting-up equipment (9) is set on the rolling-up mechanism (8), when the needs change of lap, draws the article that are broken into; And it is sticked on the new Scroll, carry out continuous rolling.
5. the continuous production equipment of little, milipore filter according to claim 2; It is characterized in that: the described cloth mechanism (2) that connects comprises pressure roller (21), air-suction trunk (22), has the cloth of connecing platform (221) on the air-suction trunk (22), connects on the cloth platform (221) to have a plurality of wind inlets; Air-suction trunk (22) is adsorbed on nonwoven through the wind inlet air draught and connects on the cloth platform (221); The nonwoven that is fed forward successively through air-suction trunk (22) connect cloth platform (221) and pressure roller (21), when connecing cloth, pressure roller (21) is pushed down a volume nonwoven; The end of a last volume nonwoven and new next volume nonwoven of introducing is attracted to and connects on the cloth platform (221), splices.
6. the continuous production equipment of little, milipore filter according to claim 5; It is characterized in that: the cloth platform (221) that connects at described air-suction trunk (22) is provided with pressing plate (23) in both sides up and down; Pressing plate (23) and pressure roller (21) promote compress through cylinder; When the artificial cutting-up nonwoven of needs formed smooth end, pressing plate (23) pressed down, and nonwoven is pressed on connects the enterprising pedestrian worker's cutting-up of cloth platform (221).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210054687.8A CN102580555B (en) | 2012-03-05 | 2012-03-05 | Continuous production process and equipment for micro-filtration and ultra-filtration membranes |
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| CN201210054687.8A CN102580555B (en) | 2012-03-05 | 2012-03-05 | Continuous production process and equipment for micro-filtration and ultra-filtration membranes |
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| CN102961971A (en) * | 2012-11-21 | 2013-03-13 | 上海斯纳普膜分离科技有限公司 | Automatic anhydration processing system and method of MBR (Meane Biological Reactor) flat sheet filter membrane |
| CN107761284A (en) * | 2017-09-06 | 2018-03-06 | 嘉善金泰工程塑业有限公司 | A kind of glue production line for guide ring manufacture |
| CN108413718A (en) * | 2018-02-06 | 2018-08-17 | 四川美富特水务有限责任公司 | Drying system for tablet film preparation |
| CN110302680A (en) * | 2018-03-20 | 2019-10-08 | 厦门江天智能仿生科技有限公司 | A kind of novel intelligent film applicator and preparation method thereof |
| CN110523297A (en) * | 2019-09-09 | 2019-12-03 | 香港纺织及成衣研发中心有限公司 | A kind of graphene oxide composite nano filter membrane and preparation method thereof |
| CN110772998A (en) * | 2019-11-04 | 2020-02-11 | 杭州奇丰科技有限公司 | Production process of hollow flat plate fiber membrane component |
| CN111054221A (en) * | 2018-10-16 | 2020-04-24 | 中国石油化工股份有限公司 | Device and method for preparing hollow fiber membrane |
| CN114411355A (en) * | 2022-01-20 | 2022-04-29 | 赵学立 | Preparation process of antibacterial protective coating |
| CN114748918A (en) * | 2022-04-07 | 2022-07-15 | 北京科技大学 | Continuous filter cloth mechanism for stacking extrusion device and filter cloth quick replacing method |
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| CN102961971A (en) * | 2012-11-21 | 2013-03-13 | 上海斯纳普膜分离科技有限公司 | Automatic anhydration processing system and method of MBR (Meane Biological Reactor) flat sheet filter membrane |
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| CN110772998B (en) * | 2019-11-04 | 2021-10-12 | 杭州奇丰科技有限公司 | Production process of hollow flat plate fiber membrane component |
| CN114411355A (en) * | 2022-01-20 | 2022-04-29 | 赵学立 | Preparation process of antibacterial protective coating |
| CN114748918A (en) * | 2022-04-07 | 2022-07-15 | 北京科技大学 | Continuous filter cloth mechanism for stacking extrusion device and filter cloth quick replacing method |
| CN114748918B (en) * | 2022-04-07 | 2023-04-07 | 北京科技大学 | Continuous filter cloth mechanism for stacking extrusion device and filter cloth quick replacing method |
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Address after: Binjiang Intelligent Equipment Enterprise Port 10 #, No. 90, Gangqu Middle Road, Xinbei District, Changzhou City, Jiangsu Province, 213000 Patentee after: CHANGZHOU HUIHENG MEMBRANE TECHNOLOGY Co.,Ltd. Address before: 213149 Tenglong Road, Wujin Economic Development Zone, Changzhou, Jiangsu 2 Patentee before: CHANGZHOU HUIHENG MEMBRANE TECHNOLOGY Co.,Ltd. |