CN108517574B - Spliced hollow fiber membrane spinneret - Google Patents
Spliced hollow fiber membrane spinneret Download PDFInfo
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- CN108517574B CN108517574B CN201810562360.9A CN201810562360A CN108517574B CN 108517574 B CN108517574 B CN 108517574B CN 201810562360 A CN201810562360 A CN 201810562360A CN 108517574 B CN108517574 B CN 108517574B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a spliced hollow fiber membrane spinneret which comprises a feeding plate, a core liquid plate, a needle plate and a spinneret plate which are sequentially arranged from top to bottom, wherein a feed liquid inlet I and a core liquid inlet I are formed in the feeding plate, a feed liquid inlet II and a core liquid inlet II are formed in the feeding plate, a plurality of spinneret holes are formed in the spinneret plate, a feed liquid split-flow groove is formed in a position, corresponding to the feed liquid inlet I, of the split-flow plate, a feed liquid through hole I corresponding to the feed liquid inlet I is formed in the split-flow plate, a core liquid split-flow groove is formed in the position, corresponding to the core liquid inlet I, of the split-flow plate, and a core liquid through hole I corresponding to the core liquid inlet I is formed in the two ends of the core liquid split-flow groove. The invention can adjust the number of the spinning holes according to the demands of customers, simultaneously can process a plurality of hollow fiber membrane filaments at one time, and has high working efficiency.
Description
Technical Field
The invention relates to the technical field of membrane separation, in particular to a spliced hollow fiber membrane spinneret.
Background
The hollow fiber membrane is a core component of water treatment equipment, is an important new material applied to reverse osmosis membranes, microfiltration membranes, nanofiltration membranes, ultrafiltration membranes and the like, and is gradually and widely applied in the fields of environment-friendly water treatment and the like. With the increasing quality and performance requirements of hollow fiber membranes, the strength of the membranes is important because it is directly related to the service life of the membranes, and even to the increase in membrane flux and throughput. Therefore, to obtain hollow fiber membrane filaments with excellent performance, a high-quality spinneret structure design is a primary task. How to produce high-performance hollow fiber membranes, improve the production efficiency and reduce the production cost is one of the most popular and key problems in the field of researching hollow fiber membranes. In the production and forming process of the hollow fiber membrane, the spinning feed liquid and the core liquid are injected into the spinneret from different positions of the spinneret base, and hollow fiber filiform substances, commonly called membrane filaments, are ejected from the spinneret cover through a special structure inside the spinneret.
At present, a single-hole spinneret is widely adopted for spinning hollow fiber membranes at home, and the existing spinnerets have the following problems: when the Shan Kongpen spinneret is used for spinning, only one filament can be produced at a time, the production efficiency is extremely low, and large-scale mass production cannot be realized; most of the spinneret structures of the type are complex, the reassembly precision is reduced, the product quality is affected, a large amount of machine adjustment and maintenance time is wasted, even if the porous spinneret structure is blocked or damaged by needle tubes, the spinneret structure must be replaced together with the input and storage parts of feed liquid and core liquid, the waste is extremely large, and the replacement is inconvenient; the invention patent of the patent application number 201610239058.0 discloses a novel porous hollow fiber membrane spinneret with top feed liquid, which comprises a nozzle base, a nozzle body, a needle tube and a nozzle cover, wherein a feed liquid injection opening is arranged in the middle of the nozzle base, a cylindrical core liquid cavity is arranged at the upper part of the nozzle body, a core liquid injection opening is transversely arranged on the side surface of the nozzle base, an annular core liquid channel communicated with the core liquid injection opening is arranged in the nozzle base, an annular notch groove is formed in the bottom of the annular core liquid channel, a needle tube mounting hole is formed in the bottom of the core liquid cavity, a cylindrical feed liquid cavity is formed in the nozzle cover, a feed liquid stabilizing plate is fixedly arranged in the middle of the cylindrical cavity, a spinning forming hole is formed in the bottom of the cylindrical feed liquid cavity, one end of the needle tube is fixedly inserted into the needle tube mounting hole, the other end of the needle tube is positioned in the spinning forming hole, the production mode of the top feed liquid of the spinneret is mainly realized, and meanwhile, the thickness and the diameter consistency of the spinning nozzle can be guaranteed, but the number of the spinning holes cannot be regulated according to the requirements of the client.
Disclosure of Invention
The invention aims to solve the problems that: the spliced hollow fiber membrane spinneret can adjust the number of spinneret holes according to the demands of customers, and simultaneously can process a plurality of hollow fiber membrane filaments at one time, so that the working efficiency is high.
The technical scheme provided by the invention for solving the problems is as follows: the utility model provides a concatenation formula hollow fiber membrane spinneret, includes pan feeding board, feed plate, core liquid board, faller and the spinneret that from top to bottom set gradually, be equipped with feed liquid entry first and core liquid entry first on the pan feeding, be equipped with feed liquid entry second and core liquid entry second on the feed plate, be equipped with a plurality of spinning holes on the spinneret, still including dismantling the setting and being in the division board between pan feeding board and the feed plate, the last position that corresponds with the feed liquid entry first of division board is equipped with feed liquid splitter box, feed liquid splitter box's both ends be equipped with feed liquid through-hole first that corresponds with feed liquid entry two positions, the last position that corresponds with the core liquid entry of division board is equipped with core liquid splitter box, core liquid board and last be equipped with the feed liquid that comes out from feed liquid entry second and the interior core liquid that comes out of core liquid entry second evenly divide into the pipeline of mixing in the spinning hole again after many.
Preferably, a first feed liquid buffer cavity is arranged on the feed liquid diversion channel at a position corresponding to the first feed liquid inlet. The first material liquid buffer cavity can enable the material liquid to slowly overflow after entering the first material liquid buffer cavity and simultaneously enter the two sides of the material liquid diversion groove uniformly.
Preferably, a first core liquid buffer cavity is arranged on the core liquid diversion groove at a position corresponding to the first core liquid inlet. The core liquid can slowly overflow after entering the core liquid buffer cavity I and simultaneously can uniformly enter the two sides of the core liquid diversion channel through the core liquid buffer cavity I.
Preferably, the core liquid plate is provided with a first liquid groove for receiving liquid flowing out from the second liquid inlet, one end of the first liquid groove, which is far away from the second liquid inlet, is provided with a second liquid through hole, the core liquid plate is also provided with a first core liquid groove for receiving core liquid flowing out from the second core liquid inlet, two ends of the first core liquid groove are provided with first division grooves, two ends of the first division grooves are respectively provided with an I-shaped division groove, and four corners of the first I-shaped division groove are respectively provided with a second core liquid through hole. The feed liquid flowing out of the feed liquid inlet II enters the feed liquid groove I and then enters the feed liquid through hole II in the feed liquid groove I, the core liquid flowing out of the core liquid inlet II enters the core liquid groove I, and then the core liquid is equally divided into a plurality of parts through the shunting action of the shunting groove I and the I-shaped shunting groove I.
Preferably, a second core liquid buffer cavity is arranged on the first shunt groove at a position corresponding to the second core liquid inlet. The second core liquid buffer cavity can ensure that core liquid can uniformly enter into two sides of the first shunt groove after entering into the first shunt groove.
Preferably, the needle plate is provided with a feed liquid through hole III corresponding to the feed liquid through hole II and a plurality of core liquid through holes III corresponding to the core liquid through hole II, and the lower end of the core liquid through hole III is provided with a plurality of hollow needle tubes communicated with the core liquid through holes III. The core liquid flowing out of the core liquid through hole II flows into the core liquid through hole III on the needle plate and then is reserved in the hollow needle tube, and the hollow needle tube can prevent the core liquid from being contacted with the feed liquid in advance to cause the rejection of products.
Preferably, the spinneret plate is provided with a second feed liquid groove for receiving feed liquid flowing out of the second feed liquid through hole, two ends of the second feed liquid groove are respectively provided with a second splitter box, two ends of the second splitter box are respectively provided with an I-shaped splitter box, and the spinneret holes are arranged at the positions corresponding to the hollow needle tube on four corners of the second I-shaped splitter box. The feed liquid flowing out of the feed liquid through hole II is equally divided into a plurality of parts by the flow dividing action of the feed liquid groove II, the flow dividing groove II and the I-shaped flow dividing groove and then enters the spinneret hole, so that the processing of a plurality of hollow fiber membranes can be carried out at one time.
Preferably, a second feed liquid buffer cavity is arranged on the second feed liquid tank at a position corresponding to the second feed liquid through hole. The second feed liquid buffer cavity can ensure that feed liquid can uniformly enter the two sides of the second feed liquid tank after entering the second feed liquid tank.
Preferably, the four corners of the I-shaped splitter box II are respectively provided with a semicircular annular groove, two ends of the semicircular annular groove are provided with a communicating groove for communicating two ends of the semicircular annular groove, the middle position of the communicating groove is provided with a cylindrical buffer chamber communicated with the communicating groove, and the spinneret orifice is arranged in the buffer chamber. The semicircle ring channel can guarantee that the feed liquid can be from the even entering back in both sides of spinneret orifice with the better mixture of core liquid, simultaneously, the cylinder type buffer chamber can provide certain cushioning effect after the feed liquid enters into the buffer chamber, slows down the velocity of flow of feed liquid for the feed liquid can be mixed more evenly with the core liquid.
Compared with the prior art, the invention has the advantages that: according to the invention, the splitter plate is detachably arranged between the feeding plate and the feeding plate, when a customer needs more threads at the same time, the splitting effect of the splitter plate can uniformly split the feed liquid flowing out of the feed liquid inlet I on the feeding plate and the core liquid flowing out of the core liquid inlet I into two parts, meanwhile, the same feeding plate, the core liquid plate, the needle plate and the spinneret plate are arranged on the other side of the lower end of the feeding splitter plate, so that the spinneret can simultaneously produce double hollow fiber membrane threads, and the splitter plate can be expanded, namely, more core liquid through holes I and feed liquid through holes I are arranged on the splitter plate, thereby realizing that double, triple and multiple hollow fiber membrane threads can be produced at the same time, meeting the needs of the customer, simultaneously improving the production efficiency, and when the spinneret holes do not need to be expanded in multiple, only the splitter plate and the feeding plate are required to be detached, and the feed liquid and the core liquid can be directly added on the feeding plate; in addition, the invention adopts a mode of assembling the feeding plate, the flow dividing plate, the feeding plate, the core liquid plate, the needle plate and the spinneret plate, is convenient to assemble, disassemble and replace, has high degree of freedom and is easy to maintain.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is an enlarged view of the invention at the point A in FIG. 1;
FIG. 4 is an enlarged view of the invention at B in FIG. 1;
fig. 5 is a bottom view of the needle plate of the present invention;
FIG. 6 is a schematic illustration of the invention after expansion;
the drawings are marked: 1. the feeding plate, 2, the first feed liquid inlet, 3, the first core liquid inlet, 4, the first core liquid plate, 5, the spinneret plate, 6, the needle plate, 7, the feeding plate, 8, the splitter plate, 9, the first feed liquid buffer cavity, 10, the first core liquid through hole, 11, the core liquid splitter box, 12, the third core liquid through hole, 13, the second feed liquid tank, 14, the second feed liquid buffer cavity, 15, the third feed liquid through hole, 16, the second core liquid inlet, 17, the second feed liquid inlet, 18, the first core liquid buffer cavity, 19, the feed liquid splitter box, 20, the first feed liquid through hole, 21, the I-shaped splitter box, 22, the first feed liquid tank, 23, the second feed liquid through hole, 24, the first core liquid buffer cavity, 25, the first core liquid tank, 26, the splitter box, 27, the second core liquid through hole, 28, the splitter box, 29, the second I-shaped splitter box, 30, the buffer chamber, 31, the semi-circular ring-shaped groove, 32, the communicating groove, 33, the spinneret hole, 34 and hollow.
Detailed Description
The following detailed description of embodiments of the present invention will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present invention can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The embodiment of the invention is shown in fig. 1 to 5, a spliced hollow fiber membrane spinneret, which comprises a feeding plate 1, a feeding plate 7, a core liquid plate 4, a needle plate 6 and a spinneret plate 5 which are sequentially arranged from top to bottom, wherein the feeding plate 1, the feeding plate 7, the core liquid plate 4, the needle plate 6 and the spinneret plate 5 are connected through bolts, the feeding plate 1 is provided with a first feed liquid inlet 2 and a first core liquid inlet 3, the feeding plate 7 is provided with a second feed liquid inlet 17 and a second core liquid inlet 16, the spinneret plate 5 is provided with a plurality of spinneret holes 33, and the spliced hollow fiber membrane spinneret also comprises a splitter plate 8 which is detachably arranged between the feeding plate 1 and the feeding plate 7, wherein the splitter plate 8 is provided with bolt holes, the splitter plate 8 can be fixed between the feeding plate 1 and the feeding plate 7 through bolts or pins, the split plate 8 is conveniently detached and installed at the positions corresponding to the first feed liquid inlet 2, the two ends of the splitter plate 8 are provided with first feed liquid splitter grooves 19, the two ends of the feed liquid grooves 19 are provided with through holes 20 corresponding to the positions of the second feed liquid inlet 17, the splitter plate 8 is provided with a plurality of spinneret holes 33 corresponding to the positions of the first core liquid inlet 3, the core liquid inlets 11 and the split plate core liquid inlets 11 are respectively arranged at the positions of the two ends of the split plate 8 and the two core liquid inlets 16 are respectively corresponding to the two feed liquid inlets 10 and the two core liquid inlets 16 are arranged in the two core liquid inlets 16, and the split liquid inlets 33 are respectively and the two channels are mixed into two liquid channels from the two core liquid inlets 16 and the core liquid inlet 4.
A feed liquid buffer cavity I9 is arranged on the feed liquid diversion groove 19 at a position corresponding to the feed liquid inlet I2; the core liquid diversion groove 11 is provided with a core liquid buffer cavity I18 at a position corresponding to the core liquid inlet I3.
The core liquid plate 4 is provided with a first liquid groove 22 for receiving liquid flowing out of the second liquid inlet 17, one end of the first liquid groove 22, which is far away from the second liquid inlet 17, is provided with a second liquid through hole 23, the core liquid plate 4 is also provided with a first core liquid groove 25 for receiving core liquid flowing out of the second core liquid inlet 16, two ends of the first core liquid groove 25 are provided with a first diversion groove 26, two ends of the first diversion groove 26 are provided with an I-shaped diversion groove 21, and four corners of the first I-shaped diversion groove 21 are provided with a second core liquid through hole 27; a second core liquid buffer cavity 24 is arranged on the first shunt groove 26 at a position corresponding to the second core liquid inlet 16; the needle plate 6 is provided with a feed liquid through hole III 15 corresponding to the position of the feed liquid through hole II 23 and a plurality of core liquid through holes III 12 corresponding to the position of the core liquid through hole II 27, and the lower end of the core liquid through hole III 12 is provided with a plurality of hollow needle tubes 34 communicated with the core liquid through holes III.
The spinneret plate 5 is provided with a second feed liquid groove 13 for receiving feed liquid flowing out of a second feed liquid through hole 23, two ends of the second feed liquid groove 13 are respectively provided with a second diversion groove 28, two ends of the second diversion groove 28 are respectively provided with an I-shaped diversion groove 29, and the spinneret holes 33 are arranged at the four corners of the second I-shaped diversion groove 29 and correspond to the hollow needle tube 34; a second feed liquid buffer cavity 14 is arranged on the second feed liquid groove 13 at a position corresponding to the second feed liquid through hole 23; the four corners of the I-shaped splitter box II 29 are respectively provided with a semicircular groove 31, two ends of the semicircular groove 31 are provided with a communicating groove 32 which communicates the two ends of the semicircular groove, the middle position of the communicating groove 32 is provided with a cylindrical buffer chamber 30 which communicates with the communicating groove, and a spinneret orifice 33 is arranged in the buffer chamber 30.
As shown in fig. 6, the feed plate 7, the core liquid plate 4, the needle plate 6 and the spinneret plate 5 are disposed on both sides of the lower end of the dividing plate 8, and the feed liquid and the core liquid uniformly flow to both ends of the dividing plate 8 so as to be uniformly divided into two parts, then flow through the core liquid plate 4, the needle plate 6 and the spinneret plate 5, and finally are mixed and formed into hollow fiber membrane filaments in the spinneret holes 33 on the spinneret plate 5, thus completing the expansion of the spinneret holes, and thus, double hollow fiber membrane filaments can be produced at the same time.
The beneficial effects of the invention are as follows: according to the invention, the splitter plate is detachably arranged between the feeding plate and the feeding plate, when a customer needs more threads at the same time, the splitting effect of the splitter plate can uniformly split the feed liquid flowing out of the feed liquid inlet I on the feeding plate and the core liquid flowing out of the core liquid inlet I into two parts, meanwhile, the same feeding plate, the core liquid plate, the needle plate and the spinneret plate are arranged on the other side of the lower end of the feeding splitter plate, so that the spinneret can simultaneously produce double hollow fiber membrane threads, and the splitter plate can be expanded, namely, more core liquid through holes I and feed liquid through holes I are arranged on the splitter plate, thereby realizing that double, triple and multiple hollow fiber membrane threads can be produced at the same time, meeting the needs of the customer, simultaneously improving the production efficiency, and when the spinneret holes do not need to be expanded in multiple, only the splitter plate and the feeding plate are required to be detached, and the feed liquid and the core liquid can be directly added on the feeding plate; in addition, the invention adopts a mode of assembling the feeding plate, the flow dividing plate, the feeding plate, the core liquid plate, the needle plate and the spinneret plate, is convenient to assemble, disassemble and replace, and is easy to maintain.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (8)
1. The utility model provides a concatenation formula hollow fiber membrane spinneret, includes pan feeding board (1), feed plate (7), core liquid board (4), faller (6) and spinneret (5) that from top to bottom set gradually, be equipped with feed liquid entry one (2) and core liquid entry one (3) on pan feeding board (1), be equipped with feed liquid entry two (17) and core liquid entry two (16) on feed plate (7), be equipped with a plurality of spinneret holes (33), its characterized in that on spinneret (5): the feeding device is characterized by further comprising a splitter plate (8) which is detachably arranged between the feeding plate (1) and the feeding plate (7), wherein a feed liquid splitter groove (19) is arranged at the position, corresponding to the feed liquid inlet I (2), of the splitter plate (8), feed liquid through holes I (20) corresponding to the feed liquid inlet II (17) are formed in the two ends of the feed liquid splitter groove (19), core liquid splitter grooves (11) are formed in the positions, corresponding to the core liquid inlet I (3), of the splitter plate (8), core liquid through holes I (10) corresponding to the core liquid inlet II (16) are formed in the two ends of the core liquid splitter grooves (11), and pipelines for uniformly dividing feed liquid discharged from the feed liquid inlet II (17) and core liquid discharged from the core liquid inlet II (16) into multiple parts and mixing the multiple parts in the spinneret holes (33) are arranged on the core liquid splitter plate (4) and the needle plate (6);
the core liquid plate (4) is provided with a first liquid tank (22) for receiving liquid flowing out of the second liquid inlet (17), and one end of the first liquid tank (22) away from the second liquid inlet (17) is provided with a second liquid through hole (23); the spinneret plate (5) is provided with a feed liquid groove II (13) for receiving feed liquid flowing out of the feed liquid through hole II (23), two ends of the feed liquid groove II (13) are respectively provided with a split-flow groove II (28), two ends of the split-flow groove II (28) are respectively provided with an I-shaped split-flow groove II (29), four corners of the I-shaped split-flow groove II (29) are respectively provided with a semicircular groove (31), two ends of the semicircular groove (31) are provided with a communicating groove (32) for communicating two ends of the semicircular groove, a cylindrical buffer chamber (30) communicated with the communicating groove is arranged in the middle of the communicating groove (32), and the spinneret orifice (33) is arranged in the buffer chamber (30);
when more filaments are needed, the feed liquid flowing out of the feed liquid inlet I on the feed plate and the core liquid flowing out of the core liquid inlet I are uniformly divided into two parts through the split flow action of the split flow plate, and meanwhile, the same feed plate, the core liquid plate, the needle plate and the spinneret plate are arranged on the other side of the lower end of the feed plate, so that the spinneret can produce double hollow fiber membrane filaments at the same time, and meanwhile, more core liquid through holes I and feed liquid through holes I can be arranged on the split flow plate, thereby realizing the simultaneous production of double, triple and multiple hollow fiber membrane filaments; when the spinneret orifices do not need to be expanded in multiple, only the splitter plate and the feeding plate are detached, and the feed liquid and the core liquid are directly added on the feeding plate.
2. The spliced hollow fiber membrane spinneret of claim 1, wherein: and a first feed liquid buffer cavity (9) is arranged on the feed liquid diversion groove (19) at a position corresponding to the first feed liquid inlet (2).
3. The spliced hollow fiber membrane spinneret of claim 1, wherein: and a first core liquid buffer cavity (18) is arranged on the core liquid diversion groove (11) at a position corresponding to the first core liquid inlet (3).
4. The spliced hollow fiber membrane spinneret of claim 1, wherein: the core liquid plate (4) is also provided with a first core liquid groove (25) for receiving core liquid flowing out of the second core liquid inlet (16), two ends of the first core liquid groove (25) are provided with first splitter boxes (26), two ends of the first splitter boxes (26) are respectively provided with an I-shaped splitter box (21), and four corners of the first I-shaped splitter box (21) are respectively provided with a second core liquid through hole (27).
5. The spliced hollow fiber membrane spinneret of claim 4, wherein: and a second core liquid buffer cavity (24) is arranged on the first shunt groove (26) at a position corresponding to the second core liquid inlet (16).
6. The spliced hollow fiber membrane spinneret of claim 4, wherein: the needle plate (6) is provided with a feed liquid through hole III (15) corresponding to the feed liquid through hole II (23) in position and a plurality of core liquid through holes III (12) corresponding to the core liquid through hole II (27) in position, and the lower end of the core liquid through hole III (12) is provided with a plurality of hollow needle tubes (34) communicated with the hollow needle tubes.
7. The spliced hollow fiber membrane spinneret of claim 6, wherein: the spinneret holes (33) are arranged at the four corners of the I-shaped splitter box II (29) and at the positions corresponding to the hollow needle tubes (34).
8. The spliced hollow fiber membrane spinneret of claim 7, wherein: and a second feed liquid buffer cavity (14) is arranged on the second feed liquid groove (13) at a phase position corresponding to the second feed liquid through hole (23).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562360.9A CN108517574B (en) | 2018-06-04 | 2018-06-04 | Spliced hollow fiber membrane spinneret |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562360.9A CN108517574B (en) | 2018-06-04 | 2018-06-04 | Spliced hollow fiber membrane spinneret |
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| CN108517574A CN108517574A (en) | 2018-09-11 |
| CN108517574B true CN108517574B (en) | 2023-09-29 |
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| CN201810562360.9A Active CN108517574B (en) | 2018-06-04 | 2018-06-04 | Spliced hollow fiber membrane spinneret |
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| CN111334871B (en) * | 2020-04-21 | 2024-08-27 | 山东丁鼎科技发展有限公司 | Melt-blown cloth spinning nozzle |
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| CN106435788A (en) * | 2016-10-11 | 2017-02-22 | 上海湛信科技发展有限公司 | Novel porous hollow fiber membrane spinneret device |
| CN106521654A (en) * | 2016-10-21 | 2017-03-22 | 中国科学院大连化学物理研究所 | Hollow fiber membrane spinning nozzle and method for preparing hollow fiber membrane |
| CN206783838U (en) * | 2017-02-17 | 2017-12-22 | 上海湛信科技发展有限公司 | Porous more component hollow fiber composite membrane spinning heads |
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| CN204803446U (en) * | 2015-01-30 | 2015-11-25 | 江苏龙微纳米科技有限公司 | Porous position spinning jet with adjustable hollow fiber membrane |
| CN205368568U (en) * | 2016-03-09 | 2016-07-06 | 上海湛信精密机械有限公司 | Enhancement mode haplopore hollow fiber membrane spinning jet |
| CN105671660A (en) * | 2016-04-17 | 2016-06-15 | 上海湛信精密机械有限公司 | Novel top feed liquid inlet multi-hole hollow fiber membrane spinning nozzle |
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| CN108517574A (en) | 2018-09-11 |
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