CN217431399U

CN217431399U - Shaping equipment, shaping system, hollow fiber membrane mat and hollow fiber membrane mat assembly

Info

Publication number: CN217431399U
Application number: CN202220351536.8U
Authority: CN
Inventors: 倪澄峰; 甘宇; 邓智华; 简义辉; 李兆敏
Original assignee: Maitong Medical Technology Jiaxing Co ltd; Chuangmai Medical Technology Shanghai Co ltd
Current assignee: Chuangmai Medical Technology Shanghai Co ltd; Zhejiang Maitong Intelligent Manufacturing Technology Group Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-09-16
Anticipated expiration: 2032-02-21

Abstract

The utility model provides a modular system, hollow fiber membrane pad and hollow fiber membrane pad subassembly, modular system includes: a differential sizing module; the differential shaping module is used for driving the hollow fiber membrane pad to move along a first direction; the differential stock module includes: differential roller train; the differential roller group comprises more than two differential rollers arranged along a second direction, wherein the second direction and the first direction form an angle; the linear speed of more than two differential rollers arranged along the second direction has the change trend of sequentially increasing or sequentially decreasing. So the configuration has overcome the problem that current quadrature crossover hollow fiber membrane pad overlaps each other easily, uses the point contact to give first place to between the hollow fiber membrane pad of slant crossover, can effectively solve outer membrane pad and inlayer membrane pad fluid inconsistent, transmembrane pressure difference big, easily adsorb adhesion nature scheduling problem, increases hollow fiber membrane pad's utilization ratio, and the increase performance prolongs the life-span.

Description

Shaping equipment, shaping system, hollow fiber membrane mat and hollow fiber membrane mat assembly

Technical Field

The utility model relates to a hollow fiber membrane pad processing technology field, in particular to modular system, hollow fiber membrane pad and hollow fiber membrane pad subassembly.

Background

Compared with the roll-type membrane, the hollow fiber membrane has mature technology, simple module structure and large specific surface area under the same volume, and is applied to the special fields of water treatment filters, artificial kidneys, artificial lungs and the like.

The problem of uneven fluid distribution exists in the use process of the hollow fiber membrane component, and how to ensure that liquid can uniformly flow in the hollow fiber membrane component without dead angles is very important, which also becomes an industrial problem.

Therefore, the arrangement of the membrane filaments of the hollow fiber membrane before the casting of the hollow fiber membrane component is important to ensure that thousands of membrane filaments are in a uniform distribution state, and how to uniformly distribute liquid among the hollow fiber membranes is very important to reduce transmembrane pressure difference.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular system, hollow fiber membrane pad and hollow fiber membrane pad subassembly to outer membrane pad and the inlayer membrane pad fluid inconsistent, the big problem of transmembrane pressure difference of solving current hollow fiber membrane subassembly.

In order to solve the technical problem, the utility model provides a setting device, it includes: a differential sizing module; the differential shaping module is used for driving the hollow fiber membrane pad to move along a first direction;

the differential stock module includes: differential roller train; the differential roller group comprises more than two differential rollers arranged along a second direction, wherein the second direction and the first direction are arranged at an angle; the change trend of the linear speed of more than two differential rollers arranged along the second direction is sequentially increased or sequentially decreased.

Optionally, the differential sizing module further includes: the constant-speed roller groups are arranged on the downstream side of the corresponding differential roller groups along the first direction;

the uniform roller group comprises more than two uniform rollers arranged along the second direction; the linear speeds of more than two uniform speed rollers are the same.

Optionally, the differential sizing module includes more than two differential roller groups and more than two uniform roller groups; the differential roller groups and the uniform roller groups are correspondingly arranged and alternately arranged.

Optionally, the number of the uniform rollers in each uniform roller group is equal to the number of the differential rollers in the differential roller group corresponding to the uniform roller group.

Optionally, the first direction is used for extending along a weft direction of the hollow fiber membrane mat, and the second direction is perpendicular to the first direction.

Optionally, the sizing device further includes a first heating module and a first sizing rolling module, and the first heating module is disposed on a downstream side of the differential sizing module along the first direction; the first sizing rolling module is arranged on the downstream side of the first heating module along the first direction.

Optionally, the heating temperature of the first heating module is 50 ℃ to 90 ℃.

Optionally, the sizing device further comprises a second heating module; the second heating module is arranged on the downstream side of the first sizing rolling module along the first direction.

Optionally, the heating temperature of the second heating module is lower than the heating temperature of the first heating module.

Optionally, the heating temperature of the second heating module is 30 ℃ to 60 ℃.

In order to solve the technical problem, the utility model also provides a hollow fiber membrane pad, it includes membrane silk and braided wire, through as above the former handle the back, the membrane silk is 45 ~ 85 oblique angles with the braided wire and arranges.

In order to solve the technical problem, the utility model provides a design system is still provided, it includes two sets at least as above the design equipment, adjacent two sets at least the design equipment differential gyro wheel is followed the trend of change of the linear velocity of second direction is opposite.

Optionally, the sizing system further includes a spraying module, and the spraying module is disposed on a downstream side of the sizing device along the first direction.

Optionally, the shaping system further comprises a second shaping rolling module and a third heating module; the second sizing rolling module is arranged on the downstream side of the spraying module along the first direction, and the third heating module is arranged on the downstream side of the second sizing rolling module along the first direction.

In order to solve the above technical problem, the present invention further provides a hollow fiber membrane mat assembly, which is formed by pressing at least two hollow fiber membrane mats as described above, wherein at least two hollow fiber membrane mats are obtained by processing at least two sets of the shaping devices of the shaping system as described above; the oblique angle arrangement directions of at least two adjacent hollow fiber membrane mats are opposite.

To sum up, be in the utility model provides an in typical installation, design system, hollow fiber membrane pad and hollow fiber membrane pad subassembly, typical installation includes: a differential sizing module; the differential shaping module is used for driving the hollow fiber membrane pad to move along a first direction; the differential stock module includes: differential roller train; the differential roller group comprises more than two differential rollers arranged along a second direction, wherein the second direction and the first direction form an angle; the linear speed of more than two differential rollers arranged along the second direction has the change trend of sequentially increasing or sequentially decreasing.

The configuration is that the linear speeds of more than two differential rollers along the second direction are gradually changed, the hollow fiber membrane pad is driven by the differential shaping module to move at different speeds along the second direction, so that the hollow fiber membrane pad can be pulled to be inclined, and after shaping, the problem that the existing orthogonal overlapped hollow fiber membrane pads are easily overlapped with each other is solved by the inclined overlapped hollow fiber membrane pad.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. Wherein:

FIG. 1 is a schematic view of a hollow fiber membrane mat;

FIG. 2 is a schematic diagram of a differential sizing module according to an embodiment of the present invention;

fig. 3 is a schematic view of a sizing apparatus of an embodiment of the present invention;

fig. 4 is a schematic view of a double-layered crossed hollow fiber membrane mat according to an embodiment of the present invention.

In the drawings:

01-membrane filaments; 02-weaving wires;

10-differential sizing module; 11-differential roller group; 110-differential rollers; 12-uniform roller group; 120-uniform roller; 21-a first heating module; 22-a first sizing rolling module; 23-a second heating module; 24-a spray module; 31-a second sizing rolling module; 32-a third heating module; 41-an unwinding module; and 42-rolling module.

Detailed Description

To make the objects, advantages and features of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in simplified form and are not to scale, but rather are provided for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings are intended to show different emphasis, sometimes in different proportions.

As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a", "an" and "the" are generally employed in a sense including "at least one", the terms "at least two" and "two or more" are generally employed in a sense including "two or more", and moreover, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or imply that there is a number of technical features being indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, which include not only the end points, but also the terms "mounted", "connected" and "connected" should be understood broadly, e.g., as a fixed connection, as a detachable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in the present application, the disposition of an element with another element generally only means that there is a connection, coupling, fit, or drive relationship between the two elements, and the connection, coupling, fit, or drive between the two elements may be direct or indirect through intermediate elements, and is not to be understood as indicating or implying any spatial relationship between the two elements, i.e., an element may be in any orientation within, outside, above, below, or to one side of another element unless the content clearly dictates otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

An object of the utility model is to provide a modular system, hollow fiber membrane pad and hollow fiber membrane pad subassembly to outer membrane pad and the inlayer membrane pad fluid inconsistent, the big problem of transmembrane pressure difference of solving current hollow fiber membrane subassembly. The following description refers to the accompanying drawings.

The inventors have found that 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 formed into a bundle of fibers including a plurality of membrane filaments when in use, and one end of the bundle of fibers is closed to form a closed end, and the other end is bonded together with an epoxy resin to form an open end. The raw material liquid enters the hollow cavity of each membrane wire from the opening end under the action of static pressure difference and is filtered by passing through the side wall of one membrane wire. Therefore, on the one hand, the membrane filaments in the fiber bundle are not easy to finish, and the membrane filaments with uneven finish greatly affect the distribution uniformity of the raw material liquid when passing through the fiber bundle, thereby affecting the filtration efficiency, reducing the utilization rate of a part of the membrane filaments (membrane filaments with less raw material liquid throughput), and reducing the service life of a part of the hollow fiber membranes due to overuse (membrane filaments with more raw material liquid throughput). On the other hand, since the open ends of the fiber bundles need to be bonded together by epoxy resin, so that the raw material liquid must flow through the hollow cavities of the membrane wires, the epoxy resin may leak into the hollow cavities of the membrane wires during bonding, and the utilization rate of a part of the membrane wires is reduced. Based on the technical scheme, a plurality of membrane wires are made into the hollow fiber membrane pad in some application scenes, and then the hollow fiber membrane pad is wound to be made into the hollow fiber membrane component, so that the membrane wires can be relatively uniformly distributed.

Referring to fig. 1, fig. 1 shows a hollow fiber membrane mat including membrane filaments 01 arranged to extend in a warp direction and braided wires 02 arranged to extend in a weft direction, which is suitable for use in hollow fiber membrane modules used in various liquid and gas filtration apparatuses. Optionally, the membrane wire 01 is made of one or more of polypropylene, polyethylene, polytetramethylene isoamylene, polyethersulfone, polysulfone, polyester, polytetrafluoroethylene, and polyvinylidene fluoride. The knitting yarn 02 can be made of polypropylene fiber, terylene, acrylic fiber, chinlon or cotton yarn, and the fineness of the knitting yarn 02 is 10-100D.

However, the inventor finds that after the hollow fiber membrane pad shown in fig. 1 is wound, because the membrane filaments 01 are orthogonally overlapped, the membrane filaments 01 between the outer membrane pad and the inner membrane pad are easily overlapped with each other, so that the fluids of the outer membrane pad and the inner membrane pad are inconsistent, the transmembrane pressure difference is large, adhesive substances are easily adsorbed, filtered substances such as blood plasma are easily adsorbed on the membrane surface, and the efficiency of the hollow fiber membrane module is not improved.

Based on the above studies, the inventors found that if the hollow fiber membrane mat can be changed from the orthogonal overlapping to the diagonal overlapping, the problem that the membrane filaments 01 between the outer layer membrane mat and the inner layer membrane mat of the hollow fiber membrane mat are easily overlapped with each other can be effectively overcome.

Based on this, please refer to fig. 2 and fig. 3, the present embodiment provides a sizing apparatus, which includes: a differential sizing module 10; the differential sizing module 10 is used for driving the hollow fiber membrane mat to move along a first direction O1; the differential sizing module 10 comprises: a differential roller set 11; the differential roller group 11 includes two or more differential rollers 110 arranged along a second direction O2, wherein the second direction O2 is arranged at an angle to the first direction O1; the linear velocities of two or more of the differential rollers 110 arranged in the second direction O2 have a tendency to increase sequentially or decrease sequentially.

When the differential roller 110 rotates, the outer circumferential surface thereof is used to contact the hollow fiber membrane mat and can drive the hollow fiber membrane mat to advance by a frictional force, and the moving speed of the hollow fiber membrane mat is equal to the linear velocity of the outer circumference of the differential roller 110. In an alternative example, the rotation axis of the differential roller 110 is perpendicular to the first direction O1, whereby the hollow fiber membrane mats are driven by the differential roller 110 to move in the first direction O1. Alternatively, the differential roller 110 includes two sub-rollers that clamp the hollow fiber membrane mat relatively, the distance between the two sub-rollers is adapted to the thickness of the hollow fiber membrane mat (e.g., slightly smaller than the thickness of the hollow fiber membrane mat), and the rotation directions of the two sub-rollers are opposite, so that the two sub-rollers can clamp the hollow fiber membrane mat and drive the hollow fiber membrane mat to advance.

Alternatively, the first direction O1 is used to extend along the weft direction of the hollow fiber membrane mat, that is, the weft direction knitting yarn 02 is parallel to the first direction O1 when the hollow fiber membrane mat is driven by the differential roller 110 to move. Since the variation trend of the linear velocity of the differential rollers 110 arranged along the second direction O2 is gradually changed as being sequentially increased or sequentially decreased, the moving velocity of the hollow fiber membrane mat along the warp direction is different, that is, the hollow fiber membrane mat is obliquely pulled by the differential roller set 11 to advance, so that the membrane filaments 01 and the knitting yarns 02 are not arranged orthogonally but arranged at an oblique angle after passing through the differential roller set 11, and the hollow fiber membrane mat is substantially formed into a parallelogram shape, as shown in fig. 4. Preferably, the second direction O2 is perpendicular to the first direction O1. Thus, while the differential sizing module 10 drives the hollow fiber membrane mat to move along the first direction O1, the membrane filaments 01 of the hollow fiber membrane mat and the braided wire 02 are gradually arranged at an oblique angle.

And then after the hollow fiber membrane mats are shaped, the hollow fiber membrane mats can be obliquely overlapped when being wound, the problem that the existing orthogonal overlapped hollow fiber membrane mats are easily overlapped with each other is solved by the obliquely overlapped hollow fiber membrane mats, the obliquely overlapped hollow fiber membrane mats mainly use point contact, the problems that in the hollow fiber membrane module preparation process, fluid of an outer layer membrane mat and fluid of an inner layer membrane mat are inconsistent, transmembrane pressure difference is large, adhesive substances are easily adsorbed and the like can be effectively solved, the utilization rate of the hollow fiber membrane mats is increased, the performance of the hollow fiber membrane module is improved, and the service life of the hollow fiber membrane module is prolonged.

Further, the differential sizing module 10 further includes: the uniform roller groups 12 are arranged on the downstream sides of the corresponding differential roller groups 11 along the first direction O1; the downstream side here means that the constant speed roller group 12 is located downstream of the differential speed roller group 11 along the moving direction (i.e., the first direction O1) of the hollow fiber membrane mat driven by the differential speed roller group 11, and the hollow fiber membrane mat passes through the differential speed roller group 11 first and then the constant speed roller group 12 when moving. The definition of the other components for the downstream side hereinafter can also be understood with reference to the definition that constant speed roller group 12 is disposed on the downstream side of corresponding differential roller group 11 in first direction O1. The uniform roller group 12 comprises more than two uniform rollers 120 arranged along the second direction O2; the linear speeds of more than two uniform speed rollers 120 are the same. It should be noted that the uniform roller groups 12 are disposed on the downstream side of the corresponding differential roller groups 11, and it is not limited that the downstream side of each differential roller group 11 must be provided with the corresponding uniform roller group 12, and a person skilled in the art can select the number and the position of the uniform roller groups 12 according to actual needs, but each uniform roller group 12 should be disposed on the downstream side of one corresponding differential roller group 11.

In an exemplary embodiment, in one constant speed roller set 12, the structure, shape and arrangement of the constant speed rollers 120 may be the same as that of the corresponding differential roller set 11, except that the linear speed of the constant speed rollers 120 arranged along the second direction O2 is the same as that of the differential roller set 110. Therefore, after the hollow fiber membrane mat passes through the uniform speed roller set 12, the arrangement angle of the membrane filaments 01 and the braided wire 02 cannot be changed, and the original state after passing through the differential speed roller set 11 is maintained. The inventor finds that the hollow fiber membrane mat is driven by the differential roller set 11, and the hollow fiber membrane mat has a certain twisting tension after passing through the differential roller set 11, which is not beneficial to shaping. And the constant speed roller set 12 is arranged at the downstream side of the differential roller set 11, so that the twisting tension of the hollow fiber membrane mat can be reduced. Further, the number of the uniform rollers 120 in each uniform roller group 12 is equal to the number of the differential rollers 110 in the differential roller group 11 corresponding to the uniform roller group 12, so as to reduce the twisting tension of the hollow fiber membrane mat more evenly.

Optionally, the differential sizing module 10 includes more than two differential roller sets 11 and more than two constant roller sets 12; the differential roller groups 11 and the uniform roller groups 12 are arranged correspondingly and alternately, that is, a corresponding uniform roller group 12 is arranged at the downstream side of each differential roller group 11, and the differential roller groups 11 and the uniform roller groups 12 are in one-to-one correspondence. The inventor finds that the hollow fiber membrane mat is pulled by simply using one set of differential roller set 11 and constant speed roller set 12 in one step, the linear velocity of the differential roller 110 in the differential roller set 11 is high, and the hollow fiber membrane mat is easily pulled to be twisted. In contrast, if more than two differential roller sets 11 and constant speed roller sets 12 are used to gradually pull the hollow fiber membrane mat, the hollow fiber membrane mat can be gradually pulled and formed, and the torsional tension of the hollow fiber membrane mat is decomposed and digested by the more than two differential roller sets 11 and constant speed roller sets 12, which is beneficial to reducing the torsional tension of the hollow fiber membrane mat after passing through the differential shaping module 10, and is smoother. Referring to fig. 2, in an exemplary embodiment, the differential sizing module 10 includes 3 differential roller sets 11 and 3 uniform roller sets 12, and the differential roller sets 11 and the uniform roller sets 12 are alternately arranged. It is understood that the linear speeds of the differential roller 110 and the uniform roller 120 may be reasonably set by those skilled in the art according to the size and requirement of the hollow fiber membrane mat. Preferably, the hollow fiber membrane mat has an angle between the membrane filaments 01 and the braided wire 02 of 45 ° to 85 ° after passing through the differential setting module 10.

Referring to fig. 3, optionally, the sizing apparatus further includes a first heating module 21, and the first heating module 21 is disposed on the downstream side of the differential sizing module 10 along the first direction O1. In one example, the first heating module 21 includes a heat radiation heating assembly for heat-treating the hollow fiber membrane mat after being pulled to form the bevel angle by the differential shaping module 10, and the heating temperature is, for example, preferably 50 to 90 ℃, to release the twisting tension of the hollow fiber membrane mat and heat-set the hollow fiber membrane mat.

Further, the sizing apparatus further includes a first sizing roller module 22; the first mold roll module 22 is disposed on the downstream side of the first heating module 21 in the first direction O1. In an alternative example, the first sizing module 22 includes a plurality of constant speed roller sets 12, wherein the structure of the constant speed roller set 12 may be the same as or different from the structure of the constant speed roller set 12 in the differential sizing module 10, which is not limited in this embodiment. The first shaping rolling module 22 is mainly used for shaping and rolling the hollow fiber membrane mats after the heat-shaping treatment by the first heating module 21, and prevents the hollow fiber membrane mats from being overlapped in a crossing manner through the flatness of the hollow fiber membrane mats.

Further, the molding apparatus further includes a second heating module 23, and the second heating module 23 is disposed on a downstream side of the first molding roll die module 22 in the first direction O1. The second heater module 23 may have the same or different structure as the first heater module 21, but the present embodiment is not limited thereto. The second heating module 23 is used for heat-setting the hollow fiber membrane mat rolled by the first setting and rolling module 22. Optionally, the setting temperature of the second heating module 23 is lower than the setting temperature of the first heating module 22, for example, the setting temperature of the second heating module 23 is 30 ℃ to 60 ℃.

Based on the sizing device, the present embodiment provides a hollow fiber membrane mat, which comprises membrane filaments 01 and braided wires 02. Optionally, after being processed by the sizing equipment, the membrane filaments 01 and the braided wires 02 are arranged in an oblique angle; preferably, after the hollow fiber membrane mat is treated by the shaping equipment, membrane filaments 01 and the braided wire 02 of the hollow fiber membrane mat are arranged in an oblique angle of 45-85 degrees.

Referring to fig. 3 and 4, an embodiment of the present invention further provides a sizing system, which includes at least two sets of sizing devices as described above, wherein the variation trends of the linear speed of the differential roller 110 along the second direction O2 of at least two adjacent sets of sizing devices are opposite. It should be noted that, here, the trend of the linear velocity along the second direction O2 is opposite, which means that if the linear velocity of each differential roller 110 of the differential sizing module 10 of one set of sizing apparatus increases gradually along the second direction O2, the linear velocity of each differential roller 110 of the differential sizing module 10 of the other set of sizing apparatus also decreases gradually along the second direction O2. This allows the two hollow fiber membrane mats to be pulled in opposite directions after passing through the two differential sizing modules 10, respectively, to form an angled arrangement of opposite angles, as shown in fig. 4. In some application scenes, the hollow fiber membrane mats with the double layers of oblique angles in opposite arrangement directions are arranged in a crossed manner, point contact is mainly adopted between the hollow fiber membrane mats arranged in the double layers in the crossed manner, and overlapping between the hollow fiber membrane mats is further reduced.

Further, the setting system further includes a spraying module 24, and the spraying module 24 is disposed on the downstream side of the setting apparatus, for example, on the downstream side of the second heating module 23, along the first direction O1. The spraying module 24 is used for carrying out membrane hole shaping on the hollow fiber membrane pad. In an example, the liquid for spraying by the spraying module 24 may be a surfactant, such as a glycerin aqueous solution (the mass fraction of glycerin is 15% to 60%), a sodium dodecyl sulfonate aqueous solution (the mass fraction of sodium dodecyl sulfonate is 0.5% to 5%), and the like.

Alternatively, the sizing system may accordingly comprise two first heating modules 21, two first sizing roller modules 22, two second heating modules 23 and two spraying modules 24, corresponding to the differential sizing modules 10 of the two sizing devices.

Preferably, the shaping system further comprises a second shaping rolling module 31 and a third heating module 32; the second shaping roll module 31 is disposed on the downstream side of the shower module 24 in the first direction O1, and the third heating module 32 is disposed on the downstream side of the second shaping roll module 31 in the first direction O1. The second sizing rolling module 31 has substantially the same structure as the first sizing rolling module 22, and is used for rolling, finishing and sizing the sprayed hollow fiber membrane mat. The third heating module 32 has substantially the same structure as the first heating module 21, and is used to dry the hollow fiber membrane mat which is roll-molded by the second molding roll module 31. The second shaping rolling module 31 is further configured to press two hollow fiber membrane mats with opposite oblique angle arrangement directions to form a double-layer membrane mat in a cross arrangement.

Furthermore, the utility model also provides a hollow fiber membrane pad assembly, which is formed by pressing at least two hollow fiber membrane pads as described above, wherein at least two hollow fiber membrane pads are respectively obtained by processing at least two sets of the setting equipment of the setting system as described above; the oblique angle arrangement directions of at least two adjacent hollow fiber membrane mats are opposite.

Optionally, the setting system further includes an unwinding module 41 and a winding module 42, which are respectively used for unwinding the hollow fiber membrane mat and winding the hollow fiber membrane mat, and the specific structures and principles of the unwinding module 41 and the winding module 42 can refer to the prior art, which is not further described in this embodiment.

It should be noted that, several of the above embodiments may be combined with each other. The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any changes and modifications made by those skilled in the art according to the above disclosure are all within the scope of the appended claims.

Claims

1. A sizing apparatus, comprising: a differential sizing module; the differential shaping module is used for driving the hollow fiber membrane pad to move along a first direction;

the differential stock module includes: differential roller train; the differential roller group comprises more than two differential rollers arranged along a second direction, wherein the second direction and the first direction form an angle; the linear speed of more than two differential rollers arranged along the second direction has the change trend of sequentially increasing or sequentially decreasing.

2. The sizing apparatus according to claim 1, wherein the differential sizing module further comprises: the constant-speed roller groups are arranged on the downstream sides of the corresponding differential roller groups along the first direction;

3. The sizing apparatus according to claim 2, wherein the differential sizing module comprises more than two differential roller groups and more than two constant roller groups; the differential roller groups and the uniform roller groups are correspondingly arranged and alternately arranged.

4. The sizing device according to claim 2, wherein the number of the uniform rollers in each uniform roller group is equal to the number of the differential rollers in the differential roller group corresponding to the uniform roller group.

5. The sizing apparatus according to claim 1, wherein the first direction is for extending in a weft direction of the hollow fiber membrane mat, and the second direction is perpendicular to the first direction.

6. The sizing apparatus according to claim 1, further comprising a first heating module and a first sizing roller module, the first heating module being disposed on a downstream side of the differential sizing module in the first direction; the first sizing rolling module is arranged on the downstream side of the first heating module along the first direction.

7. The sizing apparatus as recited in claim 6, wherein the heating temperature of the first heating module is 50 ℃ to 90 ℃.

8. The styling apparatus according to claim 6, further comprising a second heating module; the second heating module is arranged on the downstream side of the first sizing rolling module along the first direction.

9. The styling apparatus according to claim 8, wherein the second heating module is heated at a lower temperature than the first heating module.

10. The sizing apparatus as recited in claim 8, wherein the heating temperature of the second heating module is from 30 ℃ to 60 ℃.

11. A hollow fiber membrane mat comprising membrane filaments and braided wires, characterized in that the membrane filaments and the braided wires are arranged at an oblique angle of 45 ° to 85 ° after being treated by the setting apparatus according to any one of claims 1 to 10.

12. A sizing system comprising at least two sets of sizing apparatus according to any one of claims 1 to 10, wherein the differential rollers of at least two adjacent sets of sizing apparatus have opposite linear velocity trends in the second direction.

13. The sizing system according to claim 12, further comprising a spray module disposed on a downstream side of the sizing apparatus in the first direction.

14. The sizing system according to claim 13, further comprising a second sizing roller module and a third heating module; the second sizing rolling module is arranged on the downstream side of the spraying module along the first direction, and the third heating module is arranged on the downstream side of the second sizing rolling module along the first direction.

15. A hollow fiber membrane mat assembly formed by laminating at least two hollow fiber membrane mats according to claim 11, wherein at least two hollow fiber membrane mats are respectively obtained by processing at least two sets of the sizing devices of the sizing system according to any one of claims 12 to 14; the oblique angle arrangement directions of at least two adjacent hollow fiber membrane mats are opposite.