WO2023137867A1 - 中空纤维膜组合体及其编织装置 - Google Patents

中空纤维膜组合体及其编织装置 Download PDF

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Publication number
WO2023137867A1
WO2023137867A1 PCT/CN2022/083635 CN2022083635W WO2023137867A1 WO 2023137867 A1 WO2023137867 A1 WO 2023137867A1 CN 2022083635 W CN2022083635 W CN 2022083635W WO 2023137867 A1 WO2023137867 A1 WO 2023137867A1
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WIPO (PCT)
Prior art keywords
hollow fiber
fiber membrane
weaving
membrane assembly
knitting yarn
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PCT/CN2022/083635
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English (en)
French (fr)
Inventor
倪澄峰
邓智华
甘宇
李兆敏
Original Assignee
创脉医疗科技(上海)有限公司
浙江脉通智造科技(集团)有限公司
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Publication of WO2023137867A1 publication Critical patent/WO2023137867A1/zh

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/12—Flat warp knitting machines with provision for incorporating unlooped wefts extending from selvedge to selvedge
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00—Braiding or lacing machines

Definitions

  • the present application relates to the technical field of medical equipment, in particular to a hollow fiber membrane assembly and a weaving device for the hollow fiber membrane assembly.
  • hollow fiber membranes are used in special fields such as water treatment filters, artificial kidneys, and artificial lungs due to their mature technology, simple module structure, and larger specific surface area under the same volume.
  • a hollow fiber membrane assembly and a weaving device for the hollow fiber membrane assembly are provided.
  • the application provides a hollow fiber membrane assembly, including:
  • a hollow fiber membrane comprising a plurality of folded segments and a plurality of parallel segments extending along the latitudinal direction, the ends of the parallel segments adjacent in the warp direction in the weft direction are connected by one folded segment, and the folded segments adjacent in the warp direction are located at both ends of the parallel segment in the weft direction, so that the hollow fiber membrane forms a continuous folded body;
  • a plurality of braiding yarns, the plurality of braiding yarns are arranged at intervals along the warp direction, and are braided with the parallel segments to form.
  • the knitting yarn is twisted at the intersection of the parallel segments to form loops, the loops surround the parallel segments, and the loops formed by the same knitting yarn are connected in sequence.
  • a plurality of the weaving yarns are evenly arranged along the weft direction.
  • the distance between adjacent knitting yarns along the weft direction is 2mm-10mm.
  • a plurality of parallel segments are evenly arranged along the warp direction.
  • At least one end of the parallel segment along the weft direction has a cutting position, and the cutting positions of multiple parallel segments are located at the same longitudinal position.
  • the denier of the weaving yarn is between 10D and 100D.
  • the distance between the radially adjacent parallel segments is not smaller than the outer diameter of the hollow fiber membrane.
  • At least one of said weaving yarns is arranged in an area no more than 10 mm from the ends of said parallel segments in the weft direction.
  • the material of the hollow fiber membrane is a mixture of one or more of polypropylene, polyethylene, polytetramethylisoprene, polyethersulfone, polysulfone, polyester, polytetrafluoroethylene, and polyvinylidene fluoride.
  • the weaving yarn is made of polypropylene, polyester, acrylic, nylon or cotton.
  • the present application also provides a hollow fiber membrane assembly weaving device, which is used for weaving the above hollow fiber membrane assembly.
  • the weaving device of the hollow fiber membrane assembly includes:
  • the hollow fiber membrane unwinding mechanism is used for winding the hollow fiber membrane and releasing the hollow fiber membrane to the weaving mechanism;
  • the knitting yarn unwinding mechanism is used for winding the knitting yarn and for releasing the knitting yarn to the knitting mechanism;
  • a weft traverse mechanism used to drive the hollow fiber membrane released from the hollow fiber membrane unwinding mechanism to reciprocate along the weft direction;
  • the knitting hook mechanism is used to drive the knitting yarn released from the knitting yarn unwinding mechanism to weave and form the hollow fiber membrane.
  • both the hollow fiber membrane unwinding mechanism and the knitting yarn unwinding mechanism are arranged above the hook mechanism, and the weft traverse mechanism is arranged on both sides of the hook mechanism along the weft direction.
  • the hollow fiber membrane unwinding mechanism includes a hollow fiber membrane winding disk and a first servo motor, the hollow fiber membrane winding disk is used for winding the hollow fiber membrane, the first servo motor is connected with the hollow fiber membrane winding disk, and is used to drive the hollow fiber membrane winding disk to rotate to release the hollow fiber membrane.
  • the knitting yarn unwinding mechanism includes a knitting yarn winding disk and a second servo motor, the knitting yarn winding disk is used for winding the knitting yarn, the second servo motor is connected with the knitting yarn winding disk, and is used to drive the knitting yarn winding disk to rotate to release the knitting yarn.
  • the latitude traversing mechanism includes a first traversing wheel, a second traversing wheel, a pulling wire, a third servo motor and a fourth servo motor.
  • the third servo motor is connected to the first traversing wheel for driving the first traversing wheel to rotate;
  • the fourth servo motor is connected to the second traversing wheel for driving the second traversing wheel to rotate;
  • the drawing wire is coiled on the first traversing wheel and the second traversing wheel, and moves along the weft direction with the rotation of the first traversing wheel and the second traversing wheel, and is used to pull the hollow fiber membrane to reciprocate along the weft direction.
  • the pulling wire includes two mutually independent sections, and the third servo motor and the fourth servo motor are respectively connected to one of the sections, so as to control the traverse speed of the hollow fiber membrane toward both ends along the weft direction respectively.
  • the hollow fiber membrane unwinding mechanism and the braiding yarn unwinding mechanism are both arranged on a frame.
  • the present application also provides a method for weaving a hollow fiber membrane assembly, including:
  • Step S1 arranging a plurality of knitting yarns along the warp direction
  • Step S2 unwinding the hollow fiber membrane along the weft direction to form parallel segments
  • Step S3 after each parallel section is laid, synchronously twisting each knitting yarn to form a loop to connect with the parallel section;
  • Step S4 pull the hollow fiber membrane to form a folded section, continue to unwind the hollow fiber membrane along the weft direction to form the next parallel section; return to step S3 and repeat until the weaving of the hollow fiber membrane assembly is completed.
  • the hollow fiber membrane assembly includes: a hollow fiber membrane and a plurality of braided yarns; the hollow fiber membrane includes a plurality of folded segments and a plurality of parallel segments extending along the weft direction, the ends of the adjacent parallel segments in the warp direction are connected by one folded segment, and the adjacent folded segments in the warp direction are located at both ends of the parallel segment in the weft direction, so that the hollow fiber membrane forms a continuous folded body; Arranged at intervals and braided with the parallel segments.
  • the hollow fiber membranes are woven together with the weaving yarns to form a hollow fiber membrane assembly similar to a straw mat structure, in which each parallel section is limited by a plurality of weaving yarns, and the distance between them is kept uniform, so that the parallel sections are evenly distributed.
  • a uniform hollow fiber membrane bundle can be obtained, so that the fluid can pass through the flow channel more uniformly, effectively improving the utilization rate of the hollow fiber membrane and prolonging the service life of the hollow fiber membrane.
  • Fig. 1 is a schematic diagram of a hollow fiber membrane assembly according to an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a weaving device for a hollow fiber membrane assembly according to an embodiment of the present application.
  • first, second, and third may explicitly or implicitly include one or at least two of these features, and “one end” and “another end” as well as “near end” and “far end” usually refer to two corresponding parts, which not only include endpoints.
  • Indirect connection can be the internal communication of two elements or the interaction relationship between two elements.
  • an element is arranged on another element, usually only means that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements can be direct or indirect through an intermediate element, and should not be understood as indicating or implying a spatial positional relationship between the two elements, that is, one element can be in any orientation such as inside, outside, above, below or on one side of another element, unless the content clearly states otherwise.
  • the purpose of this application is to provide a hollow fiber membrane assembly and a weaving device for the hollow fiber membrane assembly, so as to solve the problems of uneven fluid distribution and low utilization rate of the existing hollow fiber membranes.
  • the existing hollow fiber membranes are generally hollow tubular bodies (hereinafter, a single hollow fiber membrane is referred to as a membrane filament), which are generally made into a bundle of fiber bundles containing many membrane filaments during use, and then one end of the fiber bundle is closed to form a closed end, and the other end is bonded together with epoxy resin to form an open end.
  • the raw material liquid enters the hollow lumen of each membrane filament from the opening end under the action of static pressure difference, and flows out through the side wall of each membrane filament to realize filtration.
  • the membrane filaments in the fiber bundle it is not easy to arrange the membrane filaments in the fiber bundle, and the unevenly arranged membrane filaments will greatly affect the distribution uniformity of the raw material liquid passing through the fiber bundle, thereby affecting the filtration efficiency, and will also reduce the utilization rate of a part of the membrane filaments (membrane filaments with a small amount of raw material liquid passing through), and part of the hollow fiber membranes (membrane filaments with a large amount of raw material liquid passing through) will reduce their service life due to excessive use.
  • the raw material solution since the open ends of the fiber bundles need to be bonded together with epoxy resin, the raw material solution must flow through the hollow lumen of the membrane filament, and the epoxy resin may leak into the hollow lumen of the membrane filament during bonding, reducing the utilization rate of a part of the membrane filament.
  • an embodiment of the present application provides a hollow fiber membrane assembly, which includes: a hollow fiber membrane 10 and a plurality of braided yarns 20; the hollow fiber membrane 10 includes a plurality of folded segments 11 and a plurality of parallel segments 12 extending along the weft direction (in FIG. , so that the hollow fiber membrane 10 forms a continuous folded body; a plurality of the braided yarns 20 are arranged at intervals along the warp direction, and are braided with the parallel segment 12 to form a shape.
  • the hollow fiber membranes 10 are braided together with the weaving yarns 20 to form a hollow fiber membrane assembly similar to a straw mat structure, wherein each parallel section 12 is limited by a plurality of weaving yarns 20 and kept at a uniform distance from each other, thereby making the parallel sections 12 evenly distributed.
  • a uniform hollow fiber membrane bundle can be obtained, so that the fluid can pass through the flow channel more uniformly, effectively improving the utilization rate of the hollow fiber membrane and prolonging the service life of the hollow fiber membrane.
  • the manufacturing steps of continuously folding from a single hollow fiber membrane 10 are simple to facilitate industrial production and preparation, and the finished product is uniform. Because the hollow fiber film combination is continuously folded by a single hollow fiber membrane 10, and the two ends of the latitude of the latitudes of the latitudes of the circular fiber membrane combination 11 are closed without additional sealing end. It simplifies the production steps, and it can also avoid the problem of leakage of epoxy resins from the opening end, and improve the utilization rate of the hollow fiber membrane 10.
  • the knitting yarn 20 is twisted at the intersection of the parallel segments 12 to form loops 21 , the loops 21 surround the parallel segments 12 , and the loops 21 formed by the same knitting yarn 20 are sequentially connected.
  • a single hollow fiber membrane 10 can be released and extended along the weft direction to form a parallel segment 12 , and each weaving yarn 20 is twisted at the intersection with the parallel segment 12 in turn to form a ring 21 .
  • the hollow fiber membrane 10 is twisted to form a turn-back section 11 and then continues to extend along the weft direction to form a second parallel section 12, and each weaving yarn 20 continues to be twisted in turn to form a ring 21.
  • At least one of said weaving yarns 20 is arranged in an area no more than 10 mm from the ends of said parallel segments 12 in the weft direction. That is, the distance between the point of intersection between the knitting yarn 20 closest to the end of the parallel segment 12 and the parallel segment 12 and the end of the parallel segment 12 is not greater than 10 mm.
  • Arranging at least one braided yarn 20 in a region no more than 10 mm away from the end of the parallel section 12 is conducive to improving the strength of the finished hollow fiber membrane assembly and preventing the hollow fiber membrane 10 from being stretched at the end.
  • the multiple weaving yarns 20 are evenly arranged along the weft direction, and the multiple parallel segments 12 are evenly arranged along the warp direction.
  • the distance between adjacent weaving yarns 20 along the weft direction is 2mm ⁇ 10mm. It should be noted that the spacing of the knitting yarns 20 here refers to the spacing between the axes of two adjacent knitting yarns 20 . Those skilled in the art can adjust the distance between adjacent weaving yarns 20 along the weft direction according to actual needs, so that the finished product of the hollow fiber membrane assembly meets the needs of actual use.
  • the distance between adjacent parallel segments 12 is not smaller than the outer diameter of the hollow fiber membrane 10 . It should be noted that the distance between adjacent parallel segments 12 in the warp direction here refers to the axial distance between two adjacent parallel segments 12 along the warp direction. Such configuration can ensure that adjacent parallel sections 12 will not press each other, thereby ensuring the integrity of the inner cavity of the hollow fiber membrane 10 and ensuring that the transmission of fluid therein will not be affected.
  • the material of the hollow fiber membrane 10 is a mixture of one or more of polypropylene, polyethylene, polytetramethylisoprene, polyethersulfone, polysulfone, polyester, polytetrafluoroethylene, and polyvinylidene fluoride, and the weaving yarn 20 is made of polypropylene, polyester, acrylic, nylon, or cotton.
  • the fineness of the weaving yarn 20 is between 10D and 100D.
  • At least one end of the parallel segment 12 along the weft direction has a cutting position (not shown), and the cutting positions of multiple parallel segments 12 are located at the same longitudinal position.
  • one end of the prepared hollow fiber membrane assembly can be cut off at the cutting position to form an open end, and the other end can be left untreated, and the folded section 11 forms a closed end.
  • the cutting position may be close to the end of the parallel section 12 along the weft direction, or may have a certain distance from the end of the parallel section 12 .
  • Those skilled in the art can adjust the cutting position according to the actual situation, so as to meet the actual needs.
  • the number and spacing of the folded sections 11, parallel sections 12, and weaving yarns 20 are only an example and not a limitation to the hollow fiber membrane assembly. Those skilled in the art can set the length or width of the hollow fiber membrane assembly according to actual needs, and select the appropriate number and spacing of the folded sections 11, parallel sections 12, and weaving yarns 20 for weaving.
  • the present embodiment also provides a weaving device for the hollow fiber membrane assembly, which includes: a hollow fiber membrane unwinding mechanism 30 , a weaving yarn unwinding mechanism 40 , a weft lateral movement mechanism 50 and a hook mechanism 60 .
  • the hollow fiber membrane unwinding mechanism 30 and the knitting yarn unwinding mechanism 40 are both arranged above the hook mechanism 60, and the weft traverse mechanism 50 is arranged on both sides of the hook mechanism 60 along the weft direction (transverse direction in FIG. 2 ).
  • the hollow fiber membrane unwinding mechanism 30 is used for winding the hollow fiber membrane 10 and is used for releasing the hollow fiber membrane 10 to the weaving mechanism 60 .
  • the knitting yarn unwinding mechanism 40 is used for winding the knitting yarn 20 and is used for releasing the knitting yarn 20 to the knitting mechanism 60 .
  • the weft traverse mechanism 50 is used to drive the hollow fiber membranes 10 released from the hollow fiber membrane unwinding mechanism 30 to reciprocate along the weft direction.
  • the knitting hook mechanism 60 is used to drive the knitting yarn 20 released from the knitting yarn unwinding mechanism to weave and form the hollow fiber membrane 10 .
  • the hollow fiber membrane unwinding mechanism 30 includes a hollow fiber membrane winding disk 31 and a first servo motor 32 .
  • the hollow fiber membrane winding disk 31 is used for winding the hollow fiber membrane 10
  • the first servo motor 32 is connected with the hollow fiber membrane winding disk 31 and used to drive the hollow fiber membrane winding disk 31 to rotate to release the hollow fiber membrane 10 .
  • the knitting yarn unwinding mechanism 40 includes a knitting yarn winding disc 41 and a second servo motor 42 .
  • the knitting yarn winding disk 41 is used for winding the knitting yarn 20
  • the second servo motor 42 is connected with the knitting yarn winding disk 41 and is used to drive the knitting yarn winding disk 41 to rotate to release the knitting yarn 20
  • both the hollow fiber membrane unwinding mechanism 30 and the braiding yarn unwinding mechanism 40 can be arranged on a frame 70 . Compared with common weaving fabrics, since the inside of the hollow fiber membrane 10 is a hollow cavity, its pressure bearing capacity is lower.
  • the weaving yarn 20 is actively unwound and matched with the unwinding speed of the hollow fiber membrane 10, so that after the hollow fiber membrane 10 and the weaving yarn 20 are woven, the hollow fiber membrane 10 will not be tightened, thereby avoiding the impact on the hollow cavity of the hollow fiber membrane 10.
  • the weft traversing mechanism 50 includes a first traversing wheel 51 , a second traversing wheel 52 , a pulling wire 53 , a third servo motor 54 and a fourth servo motor 55 .
  • the third servo motor 54 is connected to the first traversing wheel 51 for driving the first traversing wheel 51 to rotate.
  • the fourth servo motor 55 is connected to the second traverse wheel 52 for driving the second traverse wheel 52 to rotate.
  • the pulling wire 53 is coiled on the first traversing wheel 51 and the second traversing wheel 52 , and moves along the weft direction (transverse direction in FIG. 2 ) as the first traversing wheel 51 and the second traversing wheel 52 rotate.
  • the rotation of the third servo motor 54 and the fourth servo motor 55 drives the drawing wire 53 to move left and right, and then the movement of the drawing wire 53 can pull the hollow fiber membrane 10 to reciprocate along the weft direction to form a folded body.
  • the pulling wire 53 includes two sections that are independent of each other, and the third servo motor 54 and the fourth servo motor 55 are respectively connected to one section, so that the traverse speed of the hollow fiber membrane 10 toward both ends along the weft direction can be adjusted respectively. It can be understood that when the hollow fiber membrane 10 is moved to the edge of both ends to lay the folded section 11, the speeds of the third servo motor 54 and the fourth servo motor 55 slow down, and when the hollow fiber membrane 10 is in the laying parallel section 12, the speed increases to ensure that the unwinding of the hollow fiber membrane 10 is at a relatively constant line speed, thereby ensuring that the hollow fiber membrane 10 will not be stretched.
  • the pulling wire 53 is a steel wire.
  • the braiding mechanism 60 is used to drive the braiding yarn 20 to twist. Specifically, after each parallel section 12 of the hollow fiber membrane 10 is laid, the weaving mechanism 60 drives the weaving yarns 20 to twist synchronously to form the loops 21 . Further, the hollow fiber membrane 10 is pulled by the drawing wire 53 of the weft traversing mechanism 50 to form a turn-back section 11, and then continues to extend along the weft direction to form a parallel section 12, and thus reciprocates to complete the weaving of the hollow fiber membrane assembly.
  • the embodiment of the present application also provides a method for weaving a hollow fiber membrane assembly, which includes:
  • Step S1 arranging a plurality of braiding yarns 20 along the warp direction
  • Step S2 unwinding the hollow fiber membrane 10 along the weft direction to form parallel segments 12;
  • Step S3 after each parallel section 12 is laid, each knitting yarn 20 is twisted synchronously to connect with the parallel section 12 ;
  • Step S4 pull the hollow fiber membrane 10 back to form a folded section 11, and then continue to unwind the hollow fiber membrane 10 along the weft direction to form the next parallel section 12, return to step S3 and repeat, and complete the weaving of the hollow fiber membrane assembly.
  • the hollow fiber membrane assembly includes: a hollow fiber membrane and a plurality of braided yarns;
  • the hollow fiber membrane includes a plurality of folded segments and a plurality of parallel segments extending along the weft direction, the ends of the adjacent parallel segments in the warp direction are connected by one folded segment, and the adjacent folded segments in the warp direction are located at both ends of the parallel segment in the weft direction, so that the hollow fiber membranes form a continuous folded body;
  • the braided yarns are arranged at intervals along the warp direction, and are braided with the parallel segments to form a shape.
  • the hollow fiber membranes are woven together with the weaving yarns to form a hollow fiber membrane assembly similar to a straw mat structure, in which each parallel section is limited by a plurality of weaving yarns, and the distance between them is kept uniform, so that the parallel sections are evenly distributed.
  • a uniform hollow fiber membrane bundle can be obtained, so that the fluid can pass through the flow channel more uniformly, effectively improving the utilization rate of the hollow fiber membrane and prolonging the service life of the hollow fiber membrane.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

本申请提供一种中空纤维膜组合体及中空纤维膜组合体的编织装置。所述中空纤维膜组合体包括中空纤维膜以及多根编织纱。所述中空纤维膜包括多个回折段以及多个沿纬向延伸的平行段，经向相邻的所述平行段于纬向的端部通过一个所述回折段连接，经向相邻的所述回折段位于所述平行段于纬向的两端，以使所述中空纤维膜形成连续的回折体。多根所述编织纱沿经向间隔排布，并与所述平行段编织成型。

Description

中空纤维膜组合体及其编织装置
相关申请的交叉引用
本申请要求于2022年01月21日提交中国专利局、申请号为202210073783.0、发明名称为“中空纤维膜组合体及其编织装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及医用器材技术领域，特别涉及一种中空纤维膜组合体及中空纤维膜组合体的编织装置。
技术背景
与卷式膜相比，由于中空纤维膜技术成熟且组件结构简单，相同体积下具有较大比表面积，因此被应用于水处理过滤器、人工肾、人工肺等特殊领域。
中空纤维膜在组件制备过程中存在流体分布不均匀，如何保证液体能均匀在中空纤维膜组件中均匀流动且无死角，是非常重要的，这也成为了行业难题。因此在组件浇铸前如何对膜丝进行整理使得成千上万根中空纤维膜呈均匀分布的状态尤为重要。
发明内容
根据本申请的各种示意性实施例，提供一种中空纤维膜组合体及中空纤维膜组合体的编织装置。
本申请提供一种中空纤维膜组合体，包括：
中空纤维膜，所述中空纤维膜包括多个回折段以及多个沿纬向延伸的平行段，经向相邻的所述平行段于纬向的端部通过一个所述回折段连接，经向相邻的所述回折段位于所述平行段于纬向的两端，以使所述中空纤维膜形成 连续的回折体；及
多根编织纱，所述多根所述编织纱沿经向间隔排布，并与所述平行段编织成型。
在一些实施例中，所述编织纱于所述平行段的相交处拧转形成圈环，所述圈环环绕所述平行段，且同一所述编织纱形成的所述圈环依次连接。
在一些实施例中，多根所述编织纱沿纬向均匀地排布。
在一些实施例中，相邻的所述编织纱沿纬向的间距为2mm～10mm。
在一些实施例中，多个所述平行段沿经向均匀地排布。
在一些实施例中，所述平行段沿纬向的至少一端具有切断位置，多个所述平行段的所述切断位置位于相同的经向位置上。
在一些实施例中，所述编织纱的纤度在10D～100D之间。
在一些实施例中，经向相邻的所述平行段之间的间距不小于所述中空纤维膜的外径。
在一些实施例中，至少一根所述编织纱布置于沿纬向与所述平行段的端部相距不超过10mm的区域内。
在一些实施例中，所述中空纤维膜的材料为聚丙烯、聚乙烯、聚四甲基异戊烯、聚醚砜、聚砜、聚酯、聚四氟乙烯、聚偏氟乙烯中的一种或多种的混合。
在一些实施例中，所述编织纱由丙纶、涤纶、腈纶、锦纶或棉线制成。
本申请还提供一种中空纤维膜组合体的编织装置，用于编织如上所述的中空纤维膜组合体。所述中空纤维膜组合体的编织装置包括：
中空纤维膜放卷机构，用于供中空纤维膜卷绕，并用于向所述编制机构放出中空纤维膜；
编织纱放卷机构，用于供编织纱卷绕，并用于向所述编制机构放出编织纱；
纬向横移机构，用于驱动自所述中空纤维膜放卷机构中放出的中空纤维膜沿纬向往复移动；及
编钩机构，用于驱动自所述编织纱放卷机构中放出的编织纱与所述中空纤维膜编织成型。
在一些实施例中，所述中空纤维膜放卷机构与所述编织纱放卷机构均设置在所述编钩机构的上方，所述纬向横移机构沿纬向设置在所述编钩机构的两侧。
在一些实施例中，所述中空纤维膜放卷机构包括中空纤维膜卷绕盘与第一伺服电机，所述中空纤维膜卷绕盘用于供中空纤维膜卷绕，所述第一伺服电机与所述中空纤维膜卷绕盘连接，并用于驱动所述中空纤维膜卷绕盘转动以释放出所述中空纤维膜。所述编织纱放卷机构包括编织纱卷绕盘与第二伺服电机，所述编织纱卷绕盘用于供编织纱卷绕，所述第二伺服电机与所述编织纱卷绕盘连接，并用于驱动所述编织纱卷绕盘转动以释放出所述编织纱。
在一些实施例中，所述纬向横移机构包括第一横移轮、第二横移轮、牵引丝、第三伺服电机和第四伺服电机。所述第三伺服电机与所述第一横移轮连接，用于驱动所述第一横移轮转动；所述第四伺服电机和所述第二横移轮连接并用于驱动所述第二横移轮转动；所述牵引丝盘绕于所述第一横移轮和所述第二横移轮上，并随所述第一横移轮和所述第二横移轮的转动而沿纬向移动，用于拉动中空纤维膜沿纬向往复移动。
在一些实施例中，所述牵引丝包括两段相互独立的区段，所述第三伺服电机和所述第四伺服电机分别与一个所述区段连接，从而能够分别控制所述中空纤维膜沿纬向朝向两端的横移速度。
在一些实施例中，所述中空纤维膜放卷机构和所述编织纱放卷机构均设置于机架上。
本申请还提供一种中空纤维膜组合体的编织方法，包括：
步骤S1，沿经向布置多根编织纱，
步骤S2，沿纬向放卷中空纤维膜，以形成平行段；
步骤S3，每完成一个所述平行段的铺设后，将各编织纱同步地拧转形成圈环，以与所述平行段连接；及
步骤S4，拉动所述中空纤维膜以回折形成回折段，继续沿纬向放卷所述中空纤维膜，以形成下一个平行段；返回至步骤S3重复执行，直至完成所述中空纤维膜组合体的编织。
在本申请提供的中空纤维膜组合体及中空纤维膜组合体的编织装置中，所述中空纤维膜组合体包括：中空纤维膜以及多根编织纱；所述中空纤维膜包括多个回折段以及多个沿纬向延伸的平行段，经向相邻的所述平行段于纬向的端部通过一个所述回折段连接，经向相邻的所述回折段位于所述平行段于纬向的两端，以使所述中空纤维膜形成连续的回折体；多根所述编织纱沿经向间隔排布，并与所述平行段编织成型。
如此配置，中空纤维膜通过与编织纱一同编织成型，形成的中空纤维膜组合体类似草席结构，其中各平行段被多根编织纱所限制，相互之间保持均匀的间隔，由此使各平行段均匀地分布。后续中空纤维膜组合体的纬向的一端被切除后，可以得到均匀的中空纤维膜束，从而可使流体更均匀地通过流道，有效地提高了中空纤维膜利用率，延长了中空纤维膜的使用寿命。
附图说明
本领域的普通技术人员将会理解，提供的附图用于更好地理解本申请，而不对本申请的范围构成任何限定。其中：
图1是本申请实施例的中空纤维膜组合体的示意图；及
图2是本申请实施例的中空纤维膜组合体的编织装置的示意图。
具体实施方式
为使本申请的目的、优点和特征更加清楚，以下结合附图和具体实施例对本申请作进一步详细说明。需说明的是，附图均采用非常简化的形式且未按比例绘制，仅用以方便、明晰地辅助说明本申请实施例的目的。此外，附图所展示的结构往往是实际结构的一部分。特别的，各附图需要展示的侧重点不同，有时会采用不同的比例。
如在本申请中所使用的，单数形式“一”、“一个”以及“该”包括复数对象，术语“或”通常是以包括“和/或”的含义而进行使用的，术语“若干”通常是以包括“至少一个”的含义而进行使用的，术语“至少两个”通常是以包括“两个或两个以上”的含义而进行使用的，此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括一个或者至少两个该特征，“一端”与“另一端”以及“近端”与“远端”通常是指相对应的两部分，其不仅包括端点，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。此外，如在本申请中所使用的，一元件设置于另一元件，通常仅表示两元件之间存在连接、耦合、配合或传动关系，且两元件之间可以是直接的或通过中间元件间接的连接、耦合、配合或传动，而不能理解为指示或暗示两元件之间的空间位置关系，即一元件可以在另一元件的内部、外部、上方、下方或一侧等任意方位，除非内容另外明确指出外。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请的目的在于提供一种中空纤维膜组合体及中空纤维膜组合体的编织装置，以解决现有中空纤维膜流体分布不均，利用率低等问题。
发明人发现，现有的中空纤维膜一般是中空的管状体(下文将单根的中空纤维膜称为膜丝)，其在使用时一般被制成一束包含许多根膜丝的纤维束，进而纤维束的一端封闭以形成封闭端，另一端利用环氧树脂粘结在一起以形成开口端。原料液在静压差作用下自开口端进入各膜丝的中空管腔内，并通过各膜丝的侧壁流出而实现过滤。由此，一方面纤维束中膜丝的整理不易，而整理不均匀的膜丝将大大影响原料液通过纤维束时的分布均匀性，由此会影响过滤的效率，也会使一部分的膜丝(原料液通过量少的膜丝)的利用率降低，一部分的中空纤维膜(原料液通过量多的膜丝)则因过度使用而降低 使用寿命。另一方面，由于纤维束的开口端需要利用环氧树脂粘结在一起，以使原料液必须经由膜丝的中空管腔中流过，而环氧树脂在粘接时可能会渗漏至膜丝的中空管腔中，降低了一部分膜丝的利用率。
请参考图1，本申请实施例提供一种中空纤维膜组合体，其包括：中空纤维膜10以及多根编织纱20；所述中空纤维膜10包括多个回折段11以及多个沿纬向(图1中为横向)延伸的平行段12，经向(图1中为竖向)相邻的所述平行段12于纬向的端部通过一个所述回折段11连接，经向相邻的所述回折段11位于所述平行段12于纬向的两端，以使所述中空纤维膜10形成连续的回折体；多根所述编织纱20沿经向间隔排布，并与所述平行段12编织成型。
如此配置，中空纤维膜10通过与编织纱20一同编织成型，形成的中空纤维膜组合体类似草席结构，其中各平行段12被多根编织纱20所限制，相互之间保持均匀的间隔，由此使各平行段12均匀地分布。后续中空纤维膜组合体的纬向的一端被切除后，可以得到均匀的中空纤维膜束，从而可使流体更均匀地通过流道，有效地提高了中空纤维膜利用率，延长了中空纤维膜的使用寿命。
进一步的，通过单根的中空纤维膜10连续地回折编织的制造步骤简单，便于工业化生产制备，成品均匀程度高，且由于中空纤维膜组合体是通过单根的中空纤维膜10连续地回折而编织成型，制成的中空纤维膜组合体纬向的两端被回折段11封闭而不需要额外进行封端，简化了生产步骤，还可避免环氧树脂从开口端渗漏进中空腔体的问题，提高了中空纤维膜10的利用率。
在一些实施例中，所述编织纱20于所述平行段12的相交处拧转形成圈环21，所述圈环21环绕所述平行段12，且同一所述编织纱20形成的所述圈环21依次连接。制备过程中，可将单根的中空纤维膜10放出并沿纬向延伸形成平行段12，各编织纱20依次在与所述平行段12的相交处拧转形成圈环21。沿纬向达到所需要的宽度后，中空纤维膜10拧转形成回折段11而后继续沿纬向延伸，形成第二根平行段12，各编织纱20继续依次拧转形成圈环 21。
在一些实施例中，至少一根所述编织纱20布置于沿纬向与所述平行段12的端部相距不超过10mm的区域内。亦即，最靠近平行段12的端部的编织纱20和平行段12之间交点与平行段12的端部之间的距离不大于10mm。与平行段12的端部相距不超过10mm的区域内至少布置一根编织纱20，有利于提高中空纤维膜组合体成品的强度，避免中空纤维膜10在端部被拉伸。
在一些实施例中，多根所述编织纱20沿纬向均匀地排布，多个所述平行段12沿经向均匀地排布。在一个示范性的实施例中，相邻的所述编织纱20沿纬向的间距为2mm～10mm。需要说明的，这里编织纱20的间距指相邻两根编织纱20的轴线之间的间距。本领域技术人员可根据实际需求，对相邻的编织纱20沿纬向的间距进行调节，以使中空纤维膜组合体成品符合实际使用的需求。
在一些实施例中，经向相邻的所述平行段12之间的间距不小于所述中空纤维膜10的外径。需要说明的，这里经向相邻的平行段12之间的间距，指相邻两个平行段12之间沿经向的轴线距离。如此配置，可保证经向相邻的平行段12不会互相压迫，从而保证中空纤维膜10的内部腔体的完整性，保证流体于其中的传输不受影响。
在一个实施例中，所述中空纤维膜10的材料为聚丙烯、聚乙烯、聚四甲基异戊烯、聚醚砜、聚砜、聚酯、聚四氟乙烯、聚偏氟乙烯中的一种或多种的混合，所述编织纱20由丙纶、涤纶、腈纶、锦纶或棉线制成。优选的，所述编织纱20的纤度在10D～100D之间。
进一步的，所述平行段12沿纬向的至少一端具有切断位置(未图示)，多个所述平行段12的所述切断位置位于相同的经向位置上。使用中，制备完成的中空纤维膜组合体的一端可于切断位置被切断而形成开口端，另一端可不做处理，其通过回折段11形成封闭端。切断位置可靠近平行段12沿纬向的端部，也可以与平行段12的端部具有一定的距离。本领域技术人员可根据实际对切断位置进行调整，以满足实际需求。
需要说明的，图1中示出的中空纤维膜组合体中，回折段11、平行段12以及编织纱20的数量和间距仅为一示例而非对中空纤维膜组合体的限定，本领域技术人员可根据实际需求，对中空纤维膜组合体的长度或宽度进行设定，并选取合适的回折段11、平行段12以及编织纱20的数量和间距进行编织。
请参考图2，为了实现中空纤维膜组合体的制备，本实施例还提供一种中空纤维膜组合体的编织装置，其包括：中空纤维膜放卷机构30、编织纱放卷机构40、纬向横移机构50及编钩机构60。在一些实施例中，所述中空纤维膜放卷机构30与所述编织纱放卷机构40均设置在所述编钩机构60的上方，所述纬向横移机构50沿纬向(图2中为横向)设置在所述编钩机构60的两侧。所述中空纤维膜放卷机构30用于供中空纤维膜10卷绕，并用于向所述编制机构60放出中空纤维膜10。所述编织纱放卷机构40用于供编织纱20卷绕，并用于向所述编制机构60放出编织纱20。所述纬向横移机构50用于驱动自所述中空纤维膜放卷机构30中放出的中空纤维膜10沿纬向往复移动。所述编钩机构60用于驱动自所述编织纱放卷机构中放出的编织纱20与所述中空纤维膜10编织成型。
下面结合图2示出的实施例，对中空纤维膜组合体的编织装置进行示范性地说明。在图2示出的实施例中，中空纤维膜放卷机构30包括中空纤维膜卷绕盘31与第一伺服电机32。所述中空纤维膜卷绕盘31用于供中空纤维膜10卷绕，所述第一伺服电机32与所述中空纤维膜卷绕盘31连接，并用于驱动所述中空纤维膜卷绕盘31转动以释放出所述中空纤维膜10。所述编织纱放卷机构40包括编织纱卷绕盘41与第二伺服电机42。所述编织纱卷绕盘41用于供编织纱20卷绕，所述第二伺服电机42与所述编织纱卷绕盘41连接，并用于驱动所述编织纱卷绕盘41转动以释放出所述编织纱20。在一些实施例中，所述中空纤维膜放卷机构30和所述编织纱放卷机构40均可设置于一机架70上。和普通的织物编织相比，由于中空纤维膜10的内部为中空腔体，其承压能力较低。因此本实施例通过编织纱放卷机构40的设置，使编织纱20主动放卷，并与中空纤维膜10的放卷速度相匹配，使得中空纤维膜10与编 织纱20编织后，不会勒紧中空纤维膜10，从而避免对中空纤维膜10的中空腔体产生影响。
纬向横移机构50包括第一横移轮51、第二横移轮52、牵引丝53、第三伺服电机54和第四伺服电机55。所述第三伺服电机54与所述第一横移轮51连接，用于驱动所述第一横移轮51转动。所述第四伺服电机55和所述第二横移轮52连接，用于驱动所述第二横移轮52转动。所述牵引丝53盘绕于所述第一横移轮51和所述第二横移轮52上，并随所述第一横移轮51和所述第二横移轮52的转动而沿纬向(图2中为横向)移动。通过所述第三伺服电机54和第四伺服电机55的转动带动所述牵引丝53左右运动，进而牵引丝53的移动能够拉动中空纤维膜10沿纬向往复移动，以形成回折体。
在另一些实施例中，牵引丝53包括两段相互独立的区段，第三伺服电机54和第四伺服电机55分别与一个区段连接，从而能够分别调节所述中空纤维膜10沿纬向朝向两端的横移速度。可以理解的，在中空纤维膜10移至两端边缘而铺设回折段11时，第三伺服电机54和第四伺服电机55的速度减缓，而在中空纤维膜10处于铺设平行段12时速度增加，保证中空纤维膜10的放卷处于一个相对恒定的线速度，从而保证中空纤维膜10不会被拉伸。优选地，所述牵引丝53为钢丝。
编制机构60用于驱动编织纱20拧转。具体的，在中空纤维膜10每完成一个平行段12的铺设后，编制机构60带动各编织纱20同步地拧转，形成圈环21。进而中空纤维膜10在纬向横移机构50之牵引丝53的拉动下形成回折段11，进而继续沿纬向延伸形成平行段12，如此往复，完成中空纤维膜组合体的编织。
本申请实施例还提供一种中空纤维膜组合体的编织方法，其包括：
步骤S1：沿经向布置多根编织纱20，
步骤S2：沿纬向放卷中空纤维膜10，以形成平行段12；
步骤S3：每完成一个平行段12的铺设后，各编织纱20同步地拧转，以与所述平行段12连接；例如拧转形成圈环21而环绕所述平行段12。
步骤S4：拉动中空纤维膜10回折，形成回折段11，进而继续沿纬向放卷中空纤维膜10，以形成下一个平行段12，返回至步骤S3重复执行，完成中空纤维膜组合体的编织。
综上所述，在本申请提供的中空纤维膜组合体及中空纤维膜组合体的编织装置中，所述中空纤维膜组合体包括：中空纤维膜以及多根编织纱；所述中空纤维膜包括多个回折段以及多个沿纬向延伸的平行段，经向相邻的所述平行段于纬向的端部通过一个所述回折段连接，经向相邻的所述回折段位于所述平行段于纬向的两端，以使所述中空纤维膜形成连续的回折体；多根所述编织纱沿经向间隔排布，并与所述平行段编织成型。如此配置，中空纤维膜通过与编织纱一同编织成型，形成的中空纤维膜组合体类似草席结构，其中各平行段被多根编织纱所限制，相互之间保持均匀的间隔，由此使各平行段均匀地分布。后续中空纤维膜组合体的纬向的一端被切除后，可以得到均匀的中空纤维膜束，从而可使流体更均匀地通过流道，有效地提高了中空纤维膜利用率，延长了中空纤维膜的使用寿命。
需要说明的，上述若干实施例之间可相互组合。上述描述仅是对本申请较佳实施例的描述，并非对本申请范围的任何限定，本申请领域的普通技术人员根据上述揭示内容做的任何变更、修饰，均属于权利要求书的保护范围。

Claims (18)

  1. 一种中空纤维膜组合体，包括：
    中空纤维膜，所述中空纤维膜包括多个回折段以及多个沿纬向延伸的平行段，经向相邻的所述平行段于纬向的端部通过一个所述回折段连接，经向相邻的所述回折段位于所述平行段于纬向的两端，以使所述中空纤维膜形成连续的回折体；及
    多根编织纱，所述多根所述编织纱沿经向间隔排布，并与所述平行段编织成型。
  2. 根据权利要求1所述的中空纤维膜组合体，其中，所述编织纱于所述平行段的相交处拧转形成圈环，所述圈环环绕所述平行段，且同一所述编织纱形成的所述圈环依次连接。
  3. 根据权利要求1所述的中空纤维膜组合体，其中，多根所述编织纱沿纬向均匀地排布。
  4. 根据权利要求3所述的中空纤维膜组合体，其中，相邻的所述编织纱沿纬向的间距为2mm～10mm。
  5. 根据权利要求1所述的中空纤维膜组合体，其中，多个所述平行段沿经向均匀地排布。
  6. 根据权利要求1所述的中空纤维膜组合体，其中，所述平行段沿纬向的至少一端具有切断位置，多个所述平行段的所述切断位置位于相同的经向位置上。
  7. 根据权利要求1所述的中空纤维膜组合体，其中，所述编织纱的纤度在10D～100D之间。
  8. 根据权利要求1所述的中空纤维膜组合体，其中，经向相邻的所述平行段之间的间距不小于所述中空纤维膜的外径。
  9. 根据权利要求1所述的中空纤维膜组合体，其中，至少一根所述编织纱布置于沿纬向与所述平行段的端部相距不超过10mm的区域内。
  10. 根据权利要求1所述的中空纤维膜组合体，其中，所述中空纤维膜 的材料为聚丙烯、聚乙烯、聚四甲基异戊烯、聚醚砜、聚砜、聚酯、聚四氟乙烯、聚偏氟乙烯中的一种或多种的混合。
  11. 根据权利要求1所述的中空纤维膜组合体，其中，所述编织纱由丙纶、涤纶、腈纶、锦纶或棉线制成。
  12. 一种中空纤维膜组合体的编织装置，用于编织根据权利要求1～11中任一项所述的中空纤维膜组合体；包括：
    中空纤维膜放卷机构，用于供中空纤维膜卷绕，并用于向所述编制机构放出中空纤维膜；
    编织纱放卷机构，用于供编织纱卷绕，并用于向所述编制机构放出编织纱；
    纬向横移机构，用于驱动自所述中空纤维膜放卷机构中放出的中空纤维膜沿纬向往复移动；及
    编钩机构，用于驱动自所述编织纱放卷机构中放出的编织纱与所述中空纤维膜编织成型。
  13. 根据权利要求12所述的中空纤维膜组合体的编织装置，其中，所述中空纤维膜放卷机构与所述编织纱放卷机构均设置在所述编钩机构的上方，所述纬向横移机构沿纬向设置在所述编钩机构的两侧。
  14. 根据权利要求12所述的中空纤维膜组合体的编织装置，其中：
    所述中空纤维膜放卷机构包括：
    中空纤维膜卷绕盘，用于供中空纤维膜卷绕；及
    第一伺服电机，所述第一伺服电机与所述中空纤维膜卷绕盘连接，并用于驱动所述中空纤维膜卷绕盘转动以释放出所述中空纤维膜；
    所述编织纱放卷机构包括：
    编织纱卷绕盘，所述编织纱卷绕盘用于供编织纱卷绕；及
    第二伺服电机，所述第二伺服电机与所述编织纱卷绕盘连接，并用于驱动所述编织纱卷绕盘转动以释放出所述编织纱。
  15. 根据权利要求12所述的中空纤维膜组合体的编织装置，其中，所述 纬向横移机构包括：
    第一横移轮；
    第二横移轮；
    牵引丝，所述牵引丝盘绕于所述第一横移轮和所述第二横移轮上，并随所述第一横移轮和所述第二横移轮的转动而沿纬向移动，并用于拉动所述中空纤维膜沿纬向往复移动；
    第三伺服电机，所述第三伺服电机与所述第一横移轮连接并用于驱动所述第一横移轮转动；及
    第四伺服电机，所述第四伺服电机和所述第二横移轮连接并用于驱动所述第二横移轮转动。
  16. 根据权利要求15所述的中空纤维膜组合体的编织装置，所述牵引丝包括两段相互独立的区段，所述第三伺服电机和所述第四伺服电机分别与一个所述区段连接，从而能够分别控制所述中空纤维膜沿纬向朝向两端的横移速度。
  17. 根据权利要求12所述的中空纤维膜组合体的编织装置，其中，所述中空纤维膜放卷机构和所述编织纱放卷机构均设置于机架上。
  18. 一种中空纤维膜组合体的编织方法，包括：
    步骤S1，沿经向布置多根编织纱，
    步骤S2，沿纬向放卷中空纤维膜，以形成平行段；
    步骤S3，每完成一个所述平行段的铺设后，将各编织纱同步地拧转形成圈环，以与所述平行段连接；及
    步骤S4，拉动所述中空纤维膜以回折形成回折段，继续沿纬向放卷所述中空纤维膜，以形成下一个平行段；返回至步骤S3重复执行，直至完成所述中空纤维膜组合体的编织。
PCT/CN2022/083635 2022-01-21 2022-03-29 中空纤维膜组合体及其编织装置 WO2023137867A1 (zh)

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