CN108060463B - Multi-runner pressure-equalizing mixed spinning assembly for preparing mesophase pitch-based carbon fibers - Google Patents
Multi-runner pressure-equalizing mixed spinning assembly for preparing mesophase pitch-based carbon fibers Download PDFInfo
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- CN108060463B CN108060463B CN201810134689.5A CN201810134689A CN108060463B CN 108060463 B CN108060463 B CN 108060463B CN 201810134689 A CN201810134689 A CN 201810134689A CN 108060463 B CN108060463 B CN 108060463B
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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
- D01D4/00—Spinnerette packs; Cleaning thereof
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention provides a multi-runner pressure-equalizing mixed spinning component for preparing mesophase pitch-based carbon fibers, which comprises a raw material inlet plate, wherein a circular ring-shaped mixed porous plate, an integrated dispersion plate, a mixed porous plate, a mixed distribution plate, a spinneret plate and a component jacket are sequentially arranged below the raw material inlet plate. After entering the assembly, the molten polymer firstly enters a flow channel of a concentric circle labyrinth S-shaped structure, so that the molten polymer entering the spinning assembly is preliminarily mixed; secondly, further mixing the mixture evenly through the flow processes of dispersion, aggregation, mixed flow and the like of a series of circular hole-shaped mixing flow channels; finally, residual bubbles in the molten polymer are broken through a plurality of layers of filter screens, and large-particle-size particles are refined, so that the molten polymer is mixed more uniformly; thereby improving the quality of the spun fiber, and improving the consistency of the fiber performance and the stability of the spinning process.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a multi-runner pressure-equalizing hybrid spinning assembly for preparing mesophase pitch-based carbon fibers.
Background
The carbon fiber has the advantages of small density, high strength, high modulus and good heat conduction, is the most important reinforcement of advanced composite materials, is a typical representative of novel industrial materials in the high and new technology field, and gradually forms high-strength carbon fiber mainly comprising polyacrylonitrile carbon fiber and mesophase pitch-based high-modulus carbon fiber through decades of development processes. Because the graphite crystal structure is highly oriented along the fiber axis, the mesophase pitch-based carbon fiber has the characteristics of high modulus and high heat conduction, and has negative thermal expansion coefficient, the mesophase pitch-based carbon fiber is particularly suitable for preparing composite materials with high heat conduction and high dimensional stability and precision, and is applied to the environment with large temperature difference of satellites, missiles and space.
In the prior art, carbon fiber filaments are prepared by spinnable mesophase pitch, but the synthesized mesophase pitch raw material is a mixture which contains various light components and other trace impurities mixed in the synthesis and modulation of the mesophase pitch raw material, so that the defects of flow channel blockage, frequent filament breakage, unstable performance, non-uniform filament diameter and the like can occur in the spinning process. The existing spinning assembly has single function and simple structure, can not solve the problems in raw materials, can not further improve the quality of carbon fibers, and can hardly meet the requirements of the existing domestic military aviation and aerospace and civil markets on high-performance carbon fibers.
Disclosure of Invention
The invention aims to provide a multi-runner pressure-equalizing hybrid spinning component for preparing mesophase pitch-based carbon fibers, which overcomes the defects of runner blockage, frequent yarn breakage, unstable performance and inconsistent yarn diameter in the spinning process of the conventional spinning component.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a multi-runner pressure-equalizing mixed spinning component for preparing mesophase pitch-based carbon fibers, which comprises a raw material inlet plate, wherein a circular mixed porous plate, a collecting dispersion plate, a mixed porous plate, a mixed distribution plate and a spinneret plate are sequentially arranged below the raw material inlet plate, a raw material inlet runner is formed in the raw material inlet plate, and a runner with an S-shaped structure is arranged between the raw material inlet plate and the circular mixed porous plate; a first cavity with a cylindrical structure is arranged between the circular mixing porous plate and the collecting dispersion plate; a second cavity with a conical structure is arranged between the collecting dispersion plate and the mixing porous plate; a third cavity with a cylindrical structure is arranged between the mixing porous plate and the mixing distributing plate, and a fourth cavity with a conical structure is arranged between the mixing distributing plate and the spinneret plate; a first filter screen is arranged between the collecting dispersion plate and the mixing perforated plate, a second filter screen is arranged between the mixing perforated plate and the mixing distributing plate, and a third filter screen is arranged between the mixing distributing plate and the spinneret plate.
Preferably, the end face of one end of the raw material inlet plate extends outwards with the raw material inlet runner as a center to form three annular grooves, namely a first annular groove, a second annular groove and a third annular groove, wherein the groove width of the third annular groove is larger than the groove widths of the second annular groove and the first annular groove.
Preferably, three circular-ring-structure bosses are arranged on the end face of one end of the circular-ring-shaped mixing porous plate, and the bosses are matched with the three annular grooves on the raw material inlet plate to form an S-shaped flow channel;
the circular mixing perforated plate is provided with a first circular hole-shaped mixing flow channel which is arranged in a circular array and corresponds to the third circular groove on the raw material inlet plate; the first round hole-shaped mixing flow channel is used for communicating the flow channel of the S-shaped structure with the first cavity.
Preferably, a first groove with a cylindrical structure is formed in the end face of one end of the collecting dispersion plate; the second groove of the conical structure is formed in the end face of the other end of the collecting dispersion plate, and the first groove and the second groove are communicated through a second round hole-shaped mixing flow channel formed in the center of the collecting dispersion plate.
Preferably, the mixing perforated plate is provided with a third circular hole-shaped mixing flow channel which is arranged in an annular array.
Preferably, a third cavity with a cylindrical structure is formed between the upper end surface of the mixing distribution plate and the lower end surface of the mixing perforated plate; the end face of the lower end of the mixing distribution plate is a third groove with a conical structure, and the center of the mixing distribution plate is provided with a fourth round hole-shaped mixing flow channel which is arranged in a round array.
Preferably, a fourth cavity with a conical structure is formed between the upper end surface of the spinneret plate and the third groove on the lower end surface of the mixing distribution plate; the spinneret plate is provided with spinneret orifices which are arranged in an annular array.
Preferably, the raw material inlet plate, the circular ring-shaped mixing perforated plate, the collecting and dispersing plate, the mixing perforated plate, the mixing distributing plate and the spinneret plate are tightly connected through the assembly outer sleeve.
Compared with the prior art, the invention has the beneficial effects that:
according to the multi-runner pressure-equalizing mixed spinning component for preparing the mesophase pitch-based carbon fibers, after a molten polymer enters the component, the molten polymer firstly passes through the runners with the concentric circle labyrinth S-shaped structures, and in the flowing process, the molten polymer repeatedly climbs, descends, diffuses and mixes along the walls of the runners, so that the molten polymer entering the spinning component is primarily mixed; secondly, further mixing the mixture evenly through the flow processes of dispersion, aggregation, mixed flow and the like of a series of circular hole-shaped mixing flow channels; finally, residual bubbles in the molten polymer are broken through a plurality of layers of filter screens, and large-particle-size particles are refined, so that the molten polymer is mixed more uniformly; when the molten polymer reaches the spinneret orifices of the spinning assembly, the molten polymer is subjected to repeated internal mixing, multi-layer filtration of impurities and gel and repeated cross mixing of the polymer in a plurality of flow passages, so that the internal pressure of the polymer at each spinneret orifice is basically the same, the molten polymer is uniformly mixed, the impurity gel is filtered cleanly, the quality of spun fibers is improved, and the consistency of the fiber performance and the stability of the spinning process are improved.
Meanwhile, a laminated composite structure is adopted, each laminated structure realizes one function, the appearance structure parameters of each structural unit are the same or similar, and free combination, replacement and adjustment can be realized. The spinning assembly integrates the functions of mixing, filtering, pressure equalizing and the like, each function is realized by a corresponding structural unit, and the structural units can be freely combined according to the specific spinning process requirements. And the design can be improved at any time, functional modules can be added or deleted, different functional structural units can be replaced according to the performance requirements of the precursor, and the multi-occasion use of the spinning assembly can be realized. The product considers the requirements of generalization and modularization at the beginning of design, and a butt joint window capable of being replaced at any time is reserved so as to adapt to various spinning process changes. Meanwhile, the spinning assembly prolongs the service life of the whole spinning assembly, and can be replaced at any time no matter which structure has problems and faults in long-term use. The condition that the whole spinning assembly is scrapped due to one small defect can not occur, the cost is saved, and the production efficiency is also improved.
Drawings
FIG. 1 is a front view of the construction of a spin pack assembly;
wherein, 1, a raw material inlet plate; 2. a circular mixing perforated plate; 3. collecting a dispersion plate; 4. a mixing perforated plate 5 and a mixing distributing plate; 6. a spinneret plate; 61. a spinneret orifice; 7. an assembly housing; i, a first filter screen; II, a second filter screen; III, a third filter screen; IV, sealing gaskets; v, carbon fiber.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the multi-channel, pressure-equalizing, hybrid spinning pack (hereinafter referred to as spinning pack) for preparing mesophase pitch-based carbon fibers according to the present invention has functions of flowing, mixing, filtering, and pressure-equalizing a molten polymer. The composite porous plate comprises a raw material inlet plate 1, a circular ring-shaped mixed porous plate 2, a collection dispersion plate 3, a mixed porous plate 4, a mixed distribution plate 5, a spinneret plate 6, a component jacket 7, a first filter screen I, a second filter screen II, a third filter screen III, a sealing gasket IV and carbon fibers V.
Wherein, the raw material inlet plate 1 is positioned at the uppermost end of the whole spinning assembly, and a circular ring-shaped mixing perforated plate 2 is arranged below the raw material inlet plate.
Below the annular mixing perforated plate 2 is an aggregate dispersion plate 3.
Below the collecting and dispersing plate 3 is a mixing perforated plate 4, between which a first filter screen i is arranged.
Below the mixing perforated plate 4 is a mixing distribution plate 5, between which a second filter screen ii is arranged.
Below the mixing and distributing plate 5 is a spinneret 6, between which a third filter screen iii is arranged.
The raw material inlet plate 1, the circular ring-shaped mixing porous plate 2, the collecting dispersion plate 3, the mixing porous plate 4, the mixing distribution plate 5 and the spinneret plate 6 are all arranged in the component outer sleeve 7, and a sealing gasket IV is arranged between the raw material inlet plate 1 and the component outer sleeve 7.
After the spinning assembly is assembled, the structural units and the functional units are integrated into a whole by being compressed and fixed through screws, so that the multi-runner pressure-equalizing mixed spinning assembly for preparing the mesophase pitch-based carbon fiber is formed.
Specifically, the raw material inlet plate 1 is a two-step structure, and the assembly outer sleeve 7 is in contact with the lower end face of the large end of the raw material inlet plate 1 and is connected with the large end of the raw material inlet plate through a fastening screw.
The center of the raw material inlet plate 1 is provided with a raw material inlet runner, the raw material inlet runner is a channel for molten polymer to enter the spinning assembly, and the flow cross section of the runner is circular.
Meanwhile, the end face of one end of the raw material inlet plate 1 extends outwards by taking the raw material inlet flow channel as a center to form three annular grooves, namely a first annular groove, a second annular groove and a third annular groove, wherein the groove width of the third annular groove is larger than the groove widths of the first annular groove and the second annular groove. The three annular grooves form a space for repeatedly mixing the molten polymer, and the molten polymer is subjected to pressure equalization, mixing, and buffering, and then flows out to the next structural unit.
The end face of one end of the circular ring-shaped mixing porous plate 2 is provided with a boss with three circular ring-shaped structures, the boss is inserted into an annular groove on the raw material inlet plate 1, so that a flow channel of an S-shaped structure which extends outwards by taking the raw material inlet flow channel as a center is formed at the joint of the raw material inlet plate 1 and the circular ring-shaped mixing porous plate 2, the molten polymer is repeatedly mixed and homogenized, and finally the molten polymer flows into a next structural unit through a first circular hole-shaped flow channel on the circular ring-shaped mixing porous plate 2.
Three annular flow channels are further formed in the annular mixing porous plate 2 and are arranged below the third annular groove, and the flow channels of the S-shaped structures are communicated with the first cavity through the three annular grooves.
A first groove with a cylindrical structure is formed in the end face of one end of the collecting dispersion plate 3; set up the second recess of circular cone structure on the other end terminal surface of collection dispersion plate 3, through seting up the second round hole shape mixing channel intercommunication in collection dispersion plate 3 central point between first recess and the second recess.
A first cavity with a cylindrical structure is formed between the first groove on the collecting dispersion plate 3 and the lower end face of the annular mixing porous plate 2, a second groove with a conical structure is formed in the lower end face of the collecting dispersion plate 3, and a second round-hole-shaped flow channel is formed in the center of the collecting dispersion plate 3 and used for communicating the upper cavity with the lower cavity of the collecting dispersion plate 3; the flow cross section of the round-hole-shaped flow passage is round, and the molten polymer is gathered and then enters the next structural unit.
A second cavity with a conical structure is formed between the upper end surface of the mixing porous plate 4 and the second groove on the lower end surface of the collecting dispersion plate 3; meanwhile, a third round hole-shaped flow channel distributed in an annular array is formed in the mixing porous plate 4, a first filter screen I is arranged on the upper end face, and the molten polymer enters the next structural unit after being mixed and filtered.
A third cavity with a cylindrical structure is formed between the lower end face of the mixing perforated plate 4 and the upper end face of the mixing distributing plate 5, and a second filter screen II is arranged in the third cavity; the end face of the lower end of the mixing distribution plate 5 is a third groove with a conical structure, the center of the mixing distribution plate 5 is provided with a fourth circular hole-shaped mixing flow channel which is arranged in a circular array, and the molten polymer enters the next structural unit after being continuously mixed and filtered.
A fourth cavity with a conical structure is formed between the upper end face of the spinneret plate 6 and the third groove on the lower end face of the mixing porous plate 5, a third filter screen III is arranged in the fourth cavity, a fifth circular hole-shaped mixing flow channel-spinneret hole 61 distributed in a circular ring array is arranged on the spinneret plate 6, and after being filtered by the third filter screen III, the molten polymer flows out of the spinneret hole 61 to finish spinning.
The raw material inlet plate 1, the annular mixing perforated plate 2, the collecting dispersion plate 3, the mixing perforated plate 4, the mixing distribution plate 5 and the spinneret plate 6 are sequentially arranged in the assembly outer sleeve 7 from top to bottom, sealed by a sealing gasket IV, and the structural units are pressed and fixed by screws.
The component outer sleeve 7 is of a cylindrical thin-wall structure, the upper end face of the component outer sleeve is fixedly connected with the raw material inlet plate 1 through screws, and the lower end face of the component outer sleeve is provided with a positioning boss, so that the positioning boss is clamped on the lower end face of the spinneret plate 6.
The invention has the technical advantages that:
1. and the sheet layer combined structure realizes the modularization of functional units.
The multi-runner pressure-equalizing mixed spinning component (hereinafter referred to as spinning component) for preparing the mesophase pitch-based carbon fiber adopts a lamellar combined structure, each lamellar structure realizes a function, and the appearance structure parameters of each structural unit are the same or similar, so that the free combination, replacement and adjustment can be realized.
The spinning assembly integrates the functions of mixing, filtering, pressure equalizing and the like, each function is realized by a corresponding structural unit, and the structural units can be freely combined according to the specific spinning process requirements. And the design can be improved at any time, functional modules can be added or deleted, different functional structural units can be replaced according to the performance requirements of the precursor, and the multi-occasion use of the spinning assembly can be realized. The product considers the requirements of generalization and modularization at the beginning of design, and a butt joint window capable of being replaced at any time is reserved so as to adapt to various spinning process changes.
Meanwhile, the spinning assembly prolongs the service life of the whole spinning assembly, and can be replaced at any time no matter which structure has problems and faults in long-term use. The condition that the whole spinning assembly is scrapped due to one small defect can not occur, the cost is saved, and the production efficiency is also improved.
2. Simple structure, compact cooperation and complete functions.
The spinning assembly has the advantages of small space size, reasonable structural layout, simple structure and easy processing and forming. Each structural unit is reliably matched and is easy to mount and dismount.
The spinning assembly integrates the functions of mixing, pressure equalizing, filtering and the like of the molten polymer, so that when the molten polymer reaches the spinneret orifices of the spinning assembly, the molten polymer is subjected to repeated internal mixing, multi-layer filtering of impurities and gel and repeated cross mixing of the polymer in a plurality of flow channels, the internal pressure of the polymer at each spinneret orifice is basically the same, the molten polymer is uniformly mixed, the impurity gel is filtered cleanly, and therefore the quality of spun fibers is improved, the consistency of the performance of the fibers and the stability of the spinning process are improved.
3. The physical and chemical properties of the molten polymer in the spinning assembly are uniform.
The spinning assembly adopts various mixed flow modes, and the components in the molten polymer are distributed more uniformly and have more balanced physical and chemical properties through multiple repeated mixing, dispersing, collecting, distributing and other flow processes, so that the consistency of the properties of the carbon fiber precursors is improved.
After entering the assembly, the molten polymer firstly enters a concentric circle labyrinth type flow channel, and in the flowing process, the molten polymer repeatedly ascends, descends, diffuses and mixes along the wall of the flow channel, so that the molten polymer entering the spinning assembly is primarily mixed; secondly, further mixing the mixture evenly through the flow processes of dispersion, aggregation, mixed flow and the like of a series of circular hole-shaped mixing flow channels; finally, residual bubbles in the spinneret are broken through a plurality of layers of filter screens, particles with large particle sizes are refined, the molten polymers are mixed more uniformly, and the pressure at the spinneret holes is more uniform.
4. The molten polymer reaches the orifice with less impurity gels.
The spinning assembly adopts a multi-layer filtering mode, and has three filtering layers which are used for filtering layer by layer, so that impurity gel in the molten polymer is removed before reaching a spinneret orifice.
The filtering mode is that metal filters are used for filtering, the mesh number of the metal filters is different, and the metal filters are sequentially arranged from top to bottom from small to large, so that impurities with different particle sizes are filtered by different metal filters, the impurities in the molten polymer are prevented from being accumulated on a certain filter in a large amount, and the service efficiency and the service cycle of the filter are improved.
According to the multi-runner pressure-equalizing mixed spinning component for preparing the mesophase pitch-based carbon fibers, the raw material inlet plate 1 is positioned on the first layer (the uppermost layer) of the whole spinning component and matched with the annular mixed porous plate 2 on the second layer. The circular ring-shaped mixing perforated plate 2 is matched with the collecting dispersion plate 3 of the third layer. The mixing perforated plate 4 cooperation of collection dispersion board 3 and fourth layer is provided with first filter screen I between. The mixing perforated plate 4 is matched with the mixing distributing plate 5 of the fifth layer, and a second filter screen II is arranged between the mixing perforated plate and the mixing distributing plate. The mixing distribution plate 5 is matched with the spinneret plate 6 of the sixth layer, and a third filter screen III is arranged between the mixing distribution plate and the spinneret plate.
Meanwhile, a raw material inlet plate 1, a circular ring-shaped mixing perforated plate 2, a collecting dispersion plate 3, a mixing perforated plate 4, a mixing distribution plate 5 and a spinneret plate 6 are sequentially arranged in an assembly outer sleeve 7 from top to bottom, sealed by a sealing gasket IV, and tightly pressed and fixed by screws.
And then the spinning assembly is arranged in a spinning manifold, and the temperature is raised to the spinning working temperature.
The molten polymer enters the spinning assembly through the raw material inlet runner of the raw material inlet plate 1, repeatedly climbs, descends, diffuses and mixes in a concentric circle labyrinth type runner space formed by concentric circle mixing runners, reaches a mixing pressure-equalizing buffer space, converges and rectifies, flows into a first circular hole-shaped mixing runner of the circular ring-shaped mixing perforated plate 2, disperses and enters a first cavity of a cylindrical structure of the aggregation dispersion plate 3, gathers and mixes the molten polymer, and flows into a second cavity of a conical structure from a second circular hole-shaped mixing runner, and the molten polymer is mixed, buffered and pressure-equalized in the space. After being filtered by the first filter screen I, the melt polymer flows into the mixing perforated plate 4, is dispersed again, flows into the mixing distributing plate 5 after being filtered by the second filter screen II, flows in a dispersing way, then reaches a conical fourth cavity at the upper end of the spinneret plate 6, is mixed, buffered and equalized in the space, is filtered by the third filter screen III, flows into a spinneret hole 61 in the spinneret plate 6, is extruded from the spinneret hole 61, is drafted by downstream equipment, and finally, the intermediate phase pitch-based carbon fiber precursor V is spun.
Claims (8)
1. The multi-runner pressure-equalizing mixed spinning component for preparing the mesophase pitch-based carbon fiber is characterized in that: the composite material mixing device comprises a raw material inlet plate (1), wherein a circular ring-shaped mixing porous plate (2), a collecting dispersion plate (3), a mixing porous plate (4), a mixing distribution plate (5) and a spinneret plate (6) are sequentially arranged below the raw material inlet plate (1), a raw material inlet flow channel is formed in the raw material inlet plate (1), and a flow channel with an S-shaped structure is arranged between the raw material inlet plate (1) and the circular ring-shaped mixing porous plate (2); a first cavity with a cylindrical structure is arranged between the circular mixing porous plate (2) and the collecting dispersion plate (3); a second cavity with a conical structure is arranged between the collecting dispersion plate (3) and the mixing porous plate (4); a third cavity with a cylindrical structure is arranged between the mixing porous plate (4) and the mixing distribution plate (5), and a fourth cavity with a conical structure is arranged between the mixing distribution plate (5) and the spinneret plate (6); a first filter screen (I) is arranged between the collecting dispersion plate (3) and the mixing perforated plate (4), a second filter screen (II) is arranged between the mixing perforated plate (4) and the mixing distribution plate (5), and a third filter screen (III) is arranged between the mixing distribution plate (5) and the spinneret plate (6);
the spinneret plate (6) is provided with spinneret orifices (61) which are arranged in an annular array.
2. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 1, wherein: the end face of one end of the raw material inlet plate (1) extends outwards by taking the raw material inlet flow channel as a center to form three annular grooves, namely a first annular groove, a second annular groove and a third annular groove, wherein the groove width of the third annular groove is larger than that of the second annular groove and the first annular groove.
3. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 2, wherein: the end face of one end of the circular mixing porous plate (2) is provided with three circular bosses which are matched with three annular grooves on the raw material inlet plate (1) to form an S-shaped flow channel;
the circular mixing perforated plate (2) is provided with a first circular hole-shaped mixing flow channel which corresponds to the third circular groove position on the raw material inlet plate (1) and is arranged in a circular array; the first round hole-shaped mixing flow channel is used for communicating the flow channel of the S-shaped structure with the first cavity.
4. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 1, wherein: a first groove with a cylindrical structure is formed in the end face of one end of the collecting dispersion plate (3); the end face of the other end of the collecting dispersion plate (3) is provided with a second groove of a conical structure, and the first groove and the second groove are communicated through a second round hole-shaped mixing flow channel arranged at the central position of the collecting dispersion plate (3).
5. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 1, wherein: the mixing perforated plate (4) is provided with a third circular hole-shaped mixing flow passage which is arranged in an annular array.
6. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 1, wherein: a third cavity with a cylindrical structure is formed between the upper end surface of the mixing distribution plate (5) and the lower end surface of the mixing porous plate (4); the end face of the lower end of the mixing distribution plate (5) is a third groove with a conical structure, and a fourth round hole-shaped mixing flow channel which is arranged in a round array is formed in the center of the mixing distribution plate (5).
7. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 1, wherein: a fourth cavity with a conical structure is formed between the upper end face of the spinneret plate (6) and the third groove on the lower end face of the mixing distribution plate (5).
8. The multi-channel, pressure-equalizing, hybrid spinning pack for producing mesophase pitch-based carbon fibers according to claim 1, wherein: the raw material inlet plate (1), the circular ring-shaped mixing perforated plate (2), the collecting dispersion plate (3), the mixing perforated plate (4), the mixing distribution plate (5) and the spinneret plate (6) are fixedly connected through the component outer sleeve (7).
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| CN108517570A (en) * | 2018-06-12 | 2018-09-11 | 江苏中杰澳新材料有限公司 | A kind of point fine female yarn spinning component that melt actively distributes |
| CN109208089A (en) * | 2018-11-23 | 2019-01-15 | 北京中丽制机工程技术有限公司 | A kind of filament spinning component |
| CN111962166B (en) * | 2020-08-10 | 2021-11-05 | 陕西天策新材料科技有限公司 | Dual-channel thermal state switching mixing filter for preparing mesophase pitch-based carbon fibers |
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| JPH04136206A (en) * | 1990-09-21 | 1992-05-11 | Toray Ind Inc | Melt spinning pack |
| US5248247A (en) * | 1990-11-17 | 1993-09-28 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for blow-extruding filaments for making a fleece |
| CN1176320A (en) * | 1996-09-04 | 1998-03-18 | 巴马格股份公司 | Spinning box |
| CN2592659Y (en) * | 2002-12-31 | 2003-12-17 | 中国石化上海石油化工股份有限公司 | Complex spinning assembly for manufacturing complex fiber |
| CN201268732Y (en) * | 2008-09-24 | 2009-07-08 | 杭州翔盛高强纤维材料股份有限公司 | Rectangular spinneret component |
| CN101694015A (en) * | 2009-10-22 | 2010-04-14 | 浙江省现代纺织工业研究院 | Special assembly for high-viscosity melt spinning |
| CN202705578U (en) * | 2012-08-04 | 2013-01-30 | 辛婷芬 | Spinning assembly |
| CN103305942A (en) * | 2013-06-06 | 2013-09-18 | 天津大学 | Spinneret plate and method for preparing mesophase pitch-based strip carbon fibers |
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| CN108060463A (en) | 2018-05-22 |
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