Apparatus and method for producing a hollow fiber membrane module

Abstract

The application provides a hollow fiber membrane module preparation device and method, the hollow fiber membrane module preparation device comprises a sleeve, a binding sleeve and a glue injection assembly; the axial direction of the binding sleeve coincides with the axial direction of the sleeve, the binding sleeve is movable along the axial direction, and the binding sleeve is radially expandable; the binding sleeve is configured to contract radially to bind the hollow fiber membrane filaments, move into the sleeve along the axial direction; the binding sleeve is further configured to expand radially to relax the hollow fiber membrane filaments, and then move out of the sleeve along the axial direction; the sleeve is a cylindrical structure comprising a closed end and an open end, the bottom of the closed end is used to contact the end of the hollow fiber membrane filaments; the glue injection assembly is connected with the sleeve, and the glue injection assembly is used to inject glue into the sleeve to fix the hollow fiber membrane filaments contained in the sleeve. Thus configured, the preparation efficiency of the hollow fiber membrane test module is improved, the preparation time is shortened, the preparation success rate is improved, the preparation of the test module is simplified, and the preparation error can be effectively controlled.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a preparation apparatus and method for hollow fiber membrane modules. Background Technology

[0002] Currently, the production technology of hollow fiber membranes is becoming increasingly mature, and their structure is simple. Compared with planar or spiral wound membranes, hollow fiber membranes have a larger specific surface area and a larger effective area for the same volume, and therefore are widely used in water treatment filters, artificial lungs, artificial kidneys, and other medical applications.

[0003] Hollow fiber membranes are generally a combination of hollow tubular bodies (hereinafter, the tubular body of a single hollow fiber membrane is referred to as a membrane filament). In use, they are typically made into a bundle containing many membrane filaments. One end of the bundle is closed, forming a closed end, while the other end is bonded together with epoxy resin, forming an open end. The feed liquid enters the hollow lumen of each membrane filament from the open end under the action of a static pressure difference, and is filtered through the sidewalls of each membrane filament.

[0004] Gas flux, bubble point pressure, and pore size distribution are key performance indicators for hollow fiber membranes. Gas flux is evaluated by monitoring the flow of gas from the inner cavity of the membrane, through the membrane wall, to the outer surface. Bubble point pressure and pore size distribution are evaluated by pressurizing the gas entering the membrane filaments to expel the pre-wetting liquid in the pores, and then monitoring the pressure drop and the airflow through the membrane wall. Therefore, the fabrication of hollow fiber membrane test modules requires extremely high precision; under high pressure, gas must only enter from the inner cavity of the membrane filaments and escape through the membrane wall. Currently, there is no effective equipment for fabricating test modules for gas flux, bubble point pressure, and pore size distribution of hollow fiber membranes; most are fabricated manually in the laboratory, which carries a high risk of inconsistencies between modules and leakage. Summary of the Invention

[0005] The purpose of this invention is to provide a preparation apparatus and method for hollow fiber membrane modules, so as to solve the problem of large differences in the fabrication of existing hollow fiber membrane test modules.

[0006] To solve the above-mentioned technical problems, the present invention provides a hollow fiber membrane module preparation apparatus, which includes: a sleeve, a binding sleeve, and an injection assembly;

[0007] The axial direction of the restraining sleeve coincides with the axial direction of the sleeve, the restraining sleeve is movable along the axial direction, and the restraining sleeve is retractable in the radial direction.

[0008] The binding sleeve is configured to contract radially to bind the hollow fiber membrane filaments and move axially into the sleeve; the binding sleeve is also configured to expand radially to relax the hollow fiber membrane filaments and then move axially out of the sleeve.

[0009] The sleeve has a cylindrical structure, including a closed end and an open end, and the bottom of the closed end is used to contact the end of the hollow fiber membrane filament;

[0010] The glue injection assembly is connected to the sleeve, and the glue injection assembly is used to inject glue into the sleeve to fix the hollow fiber membrane filament housed in the sleeve.

[0011] Optionally, there are two sleeves and two binding sleeves, and the sleeves and binding sleeves correspond one-to-one. The two sleeves are arranged at an axial interval, and the two binding sleeves are located between the two sleeves.

[0012] Optionally, the apparatus for preparing the hollow fiber membrane module includes a flipping assembly, which is rotatably arranged around a flipping axis that is angled to the axial direction of the sleeve; both sleeves and both binding sleeves are connected to the flipping assembly; and the glue injection assembly is detachably connected to the two sleeves in sequence.

[0013] Optionally, the flipping assembly includes a connecting rod and a flipping bracket; one end of the connecting rod is connected to the restraining sleeve, and the other end of the connecting rod is movably connected to the flipping bracket along the axial direction of the sleeve.

[0014] Optionally, the flipping axis is perpendicular to the axial direction of the sleeve.

[0015] Optionally, the apparatus for preparing the hollow fiber membrane module includes a cutting component for cutting off the closed end of one of the sleeves after adhesive injection and curing, so that one end of the hollow fiber membrane filament inside is connected to the outside.

[0016] Optionally, the apparatus for preparing the hollow fiber membrane module further includes a ranging component for detecting the axial length between the cut end of the sleeve and the closed end of the other sleeve.

[0017] Optionally, the axial length of the cut-off portion of the sleeve is 10mm to 15mm.

[0018] Optionally, the axial length of one sleeve is greater than the axial length of the other sleeve; the axial length of one restraining sleeve is greater than the axial length of the other restraining sleeve; the sleeve with the larger axial length is correspondingly adapted to the restraining sleeve with the larger axial length, and the sleeve with the smaller axial length is correspondingly adapted to the restraining sleeve with the smaller axial length.

[0019] To solve the above-mentioned technical problems, the present invention provides a method for preparing a hollow fiber membrane module, comprising:

[0020] Step 1: Provide a binding sleeve and thread a bundle of hollow fiber membrane filaments into the binding sleeve;

[0021] Step 2: Tighten the binding sleeve radially to bind the hollow fiber membrane filaments;

[0022] Step 3: Drive the binding sleeve to move axially to one end of the hollow fiber membrane filament, and then place the end with the binding sleeve into the sleeve;

[0023] Step 4: Expand the binding sleeve radially, and after loosening the hollow fiber membrane, move the binding sleeve axially out of the sleeve.

[0024] Step 5: Inject adhesive into the sleeve to fix the hollow fiber membrane filament housed within the sleeve.

[0025] Optionally, after step four, the method for preparing the hollow fiber membrane module further includes:

[0026] The binding sleeve is placed above the sleeve, and the binding sleeve is pulled together radially to bind the hollow fiber membrane filaments.

[0027] Optionally, steps one through five are performed at both ends of the hollow fiber membrane filament, and the method for preparing the hollow fiber membrane module further includes:

[0028] Step 6: After the adhesive has cured, cut off one of the closed ends of the sleeve to open one end of the hollow fiber membrane filament.

[0029] Optionally, after step six, the method for preparing the hollow fiber membrane module further includes:

[0030] Step 7: Obtain the axial length between the cut of the sleeve with the closed end removed and the closed end of the other sleeve.

[0031] In summary, in the hollow fiber membrane module preparation apparatus and preparation method provided by the present invention, the hollow fiber membrane module preparation apparatus includes: a sleeve, a binding sleeve, and a glue injection assembly; the axial direction of the binding sleeve coincides with the axial direction of the sleeve, the binding sleeve is movable along the axial direction, and the binding sleeve is expandable and contractible along the radial direction; the binding sleeve is configured to contract radially to bind the hollow fiber membrane filaments, and move axially into the sleeve; the binding sleeve is also configured to expand radially to relax the hollow fiber membrane filaments, and then move axially out of the sleeve; the sleeve has a cylindrical structure, including a closed end and an open end, the bottom of the closed end being used to contact the end of the hollow fiber membrane filaments; the glue injection assembly is connected to the sleeve, and the glue injection assembly is used to inject glue into the sleeve to fix the hollow fiber membrane filaments housed in the sleeve.

[0032] This configuration, through the sequential setting and use of the sleeve, binding sleeve, and glue injection assembly, can accurately and reliably fix the hollow fiber membrane filaments in the sleeve, improving the preparation efficiency of the hollow fiber membrane test assembly, shortening the preparation time, increasing the success rate of test assembly preparation, simplifying the preparation of the test assembly, and effectively controlling the preparation errors between test assemblies. Attached Figure Description

[0033] Those skilled in the art will understand that the accompanying drawings are provided to better understand the invention and do not constitute any limitation on the scope of the invention. Wherein:

[0034] Figure 1 This is a schematic diagram of the apparatus for preparing a hollow fiber membrane module according to an embodiment of the present invention.

[0035] In the attached image:

[0036] 1-Air source; 2-Air pipe; 3-Agitator; 4-Material cup; 5-Curing adhesive; 6-Pneumatic pump head; 7-Injection pipe; 8-First jacket; 9-First sleeve; 10-First binding sleeve; 11-Hollow fiber membrane filament; 12-Second binding sleeve; 13-Second sleeve; 14-Second jacket; 15-Tilting assembly; 151-Connecting rod; 152-Tilting bracket; 16-Distance measuring assembly. Detailed Implementation

[0037] To make the objectives, advantages, and features of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the embodiments of this invention. Furthermore, the structures shown in the drawings are often part of the actual structures. In particular, different figures may emphasize different aspects and may sometimes use different scales.

[0038] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects; the term “or” is generally used to mean “and / or”; the term “a number” is generally used to mean “at least one”; and the term “at least two” is generally used to mean “two or more”. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature; “one end” and “the other end,” and “proximal end” and “distal end” generally refer to two corresponding parts, which include not only endpoints. Furthermore, the terms "installed," "connected," and "attached," as used in this invention, and the term "set" on one element from another, should be interpreted broadly. They generally only indicate a connection, coupling, cooperation, or transmission relationship between the two elements, which can be direct or indirect through an intermediate element. They should not be construed as indicating or implying a spatial relationship between the two elements, meaning one element can be located inside, outside, above, below, or to one side of another element, unless otherwise explicitly stated. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. Additionally, directional terms such as above, below, up, down, upward, downward, left, and right are used relative to exemplary embodiments as shown in the figures, with upward or upper directions pointing towards the top of the corresponding figure, and downward or lower directions pointing towards the bottom of the corresponding figure.

[0039] The purpose of this invention is to provide a preparation apparatus and method for hollow fiber membrane modules, so as to solve the problem of large differences in the fabrication of existing hollow fiber membrane test modules.

[0040] The following description refers to the accompanying drawings.

[0041] Please refer to Figure 1 This invention provides an apparatus for preparing a hollow fiber membrane module, comprising: a sleeve, a binding sleeve, and a glue injection assembly. Figure 1In the illustrated example, the first sleeve 9 is used as an example of a sleeve, and the first restraining sleeve 10 is used as an example of a restraining sleeve. Optionally, the dispensing assembly includes an air source 1, an air pipe 2, a stirrer 3, a material cup 4, a pneumatic pump head 6, and a dispensing pipe 7. The material cup 4 is used to contain the curing adhesive, such as a two-component curing adhesive. The stirrer 3 is used to stir the curing adhesive in the material cup 4 so that the two components of the curing adhesive can be mixed evenly. The dispensing pipe 7 can be detachably connected to the first sleeve 9. The air source 1 is connected to the pneumatic pump head 6 through the air pipe 2, which can inject the curing adhesive into the first sleeve 9 through the dispensing pipe 7. Preferably, the amount of adhesive dispensed into the first sleeve 9 by the dispensing assembly is controllable.

[0042] The axial direction of the first binding sleeve 10 coincides with the axial direction of the first sleeve 9. Figure 1 (The middle is in the vertical direction), the first binding sleeve 10 is movable in the axial direction and is retractable in the radial direction; the first binding sleeve 10 is configured to contract radially to bind the hollow fiber membrane filament 11, and then move axially into the first sleeve 9; after entering the first sleeve 9, the first binding sleeve 10 is also configured to expand radially to relax the hollow fiber membrane filament 11, so as to facilitate its subsequent axial removal from the first sleeve 9; the glue injection assembly is connected to the first sleeve 9, and the glue injection assembly is used to inject glue into the first sleeve 9 to fix the hollow fiber membrane filament 11 housed in the first sleeve 9.

[0043] The first binding sleeve 10 can contract radially. Its structure is an elastic, contractible sleeve, such as an elastic structure made of springs and woven ropes, for example, an elastic sleeve, a wire sleeve, etc. Optionally, the first binding sleeve 10 has a stretchable rope at its axial end, preferably one stretchable rope at each of the upper and lower ends. The stretchable rope has a buckle for controlling the tension of the stretchable rope, thereby adjusting the radial contraction and expansion of the first binding sleeve 10. After the first binding sleeve 10 expands radially, it facilitates the expansion of one end of the hollow fiber membrane filament 11. Figure 1 The lower end (hereinafter referred to as the first end) is filled into it. The first sleeve 9 is a cylindrical structure, including a closed end ( Figure 1 The middle part is the lower end) and the open end ( Figure 1 The upper part (middle) forms a cup-like structure. The first sleeve 9 can be a cylindrical tube, and its material can be plastics such as PC, PP, PVC, PE, etc. The first sleeve 9 can be a disposable consumable. The axial length of the first restraining sleeve 10 is adapted to the axial length of the first sleeve 9. An interface can be provided near the open end of the first sleeve 9 for detachable connection with the glue injection pipe 7.

[0044] Preferably, after the hollow fiber membrane filament 11 is inserted into the first binding sleeve 10, the first end of the hollow fiber membrane filament 11 can be cut flat using tools such as scissors, and then placed into the first sleeve 9.

[0045] Then, the first binding sleeve 10 contracts radially, binding the first end of the hollow fiber membrane filament 11. The first binding sleeve 10 then moves axially into the first sleeve 9, so that the closed end of the first sleeve 9 contacts the first end of the hollow fiber membrane filament 11. Due to the elasticity of the first binding sleeve 10, after being inserted into the first sleeve 9, the first binding sleeve 10 will slightly expand, loosening the binding on the hollow fiber membrane filament 11, allowing the first binding sleeve 10 to be withdrawn axially from the first sleeve 9, leaving the first end of the hollow fiber membrane filament 11 inside the first sleeve 9. Preferably, the first binding sleeve 10 is then left above the first sleeve 9, binding the middle portion of the hollow fiber membrane filament 11. Subsequently, the hollow fiber membrane filament 11 housed within the first sleeve 9 is fixed by applying adhesive to the first sleeve 9 using the adhesive injection assembly. After the adhesive inside the first sleeve 9 dries, the first binding sleeve 10 is removed.

[0046] This configuration, through the sequential setting and use of the sleeve, binding sleeve, and glue injection assembly, can accurately and reliably fix the hollow fiber membrane filaments 11 in the sleeve, improving the preparation efficiency of the hollow fiber membrane test assembly, shortening the preparation time, increasing the success rate of test assembly preparation, simplifying the preparation of the test assembly, and effectively controlling the preparation errors between test assemblies.

[0047] Optionally, the hollow fiber membrane filament 11 can be made from one or more of poly-4-methyl-1-pentene, polypropylene, polyethylene, polyethersulfone, polysulfone, polyester, polytetrafluoroethylene, and polyvinylidene fluoride. The apparatus for preparing the hollow fiber membrane module can be used to prepare testing components for hollow fiber membranes in fields such as blood oxygenation, water treatment, and food and beverage processing, to measure gas flux, bubble point pressure, and pore size distribution.

[0048] Preferably, there are two sleeves and two binding sleeves, and each sleeve and binding sleeve corresponds one-to-one. The two sleeves are arranged axially spaced apart, and the two binding sleeves are located between the two sleeves. Figure 1 As shown, in a preferred embodiment, the two sleeves are a first sleeve 9 and a second sleeve 13, and the two restraining sleeves are a first restraining sleeve 10 and a second restraining sleeve 12. The structure and principle of the second sleeve 13 and its corresponding second restraining sleeve 12 are roughly similar to those of the first sleeve 9 and the first restraining sleeve 10. Please refer to the previous description of the first sleeve 9 and the first restraining sleeve 10, which will not be repeated here.

[0049] The two sleeves and two binding sleeves can clamp and fix the two ends of the hollow fiber membrane filament 11 respectively, and are used to clamp and fix the membrane bundle formed by the hollow fiber membrane filament 11 in the middle, so that the length of the bundle of hollow fiber membrane filament 11 is fixed. In particular, when determining the number of membrane filaments in a bundle of hollow fiber membrane filament 11, it is convenient to calculate the gas flux, bubble point pressure, pore size distribution, etc. in the future.

[0050] Optionally, the hollow fiber membrane assembly preparation apparatus includes a flipping assembly 15, which is rotatably arranged around a flipping axis angled to the axial direction of the sleeve; both sleeves and both binding sleeves are connected to the flipping assembly 15. The flipping assembly 15 is used to flip the first sleeve 9, the first binding sleeve 10, the second sleeve 13, and the second binding sleeve 12 to facilitate sequential glue injection of the first sleeve 9 and the second sleeve 13. In one example, the flipping assembly 15 can first flip the second sleeve 13 so that the open end faces upward, and after the hollow fiber membrane filaments 11 in the second sleeve 13 are glued and fixed, it can then flip the first sleeve 9 so that the open end faces upward to glue injection and fix the hollow fiber membrane filaments 11 in the first sleeve 9. Preferably, the flipping assembly 15 includes a connecting rod 151 and a flipping bracket 152; one end of the connecting rod 151 is connected to the binding sleeve, and the other end of the connecting rod 151 is movably connected to the flipping bracket 152 along the axial direction of the sleeve. The connection node between the connecting rod 151 and the flipping bracket 152 can be a movable structure commonly found in the art, such as a slide rail or slider, and this invention is not limited thereto. Preferably, the flipping bracket 152 is fixed to the first sleeve 9 via the first clamp 8 and to the second sleeve 13 via the second clamp 14. Preferably, the flipping axis is perpendicular to the axial direction of the sleeve.

[0051] Optionally, the hollow fiber membrane module fabrication apparatus includes a cutting component (not shown), which is used to cut off the closed end of one of the sleeves after adhesive injection and curing, so that one end of the hollow fiber membrane filament 11 inside is connected to the outside. Preferably, the axial length of one sleeve is greater than the axial length of the other sleeve; the axial length of one binding sleeve is greater than the axial length of the other binding sleeve; the sleeve with the larger axial length is fitted to the binding sleeve with the larger axial length, and the sleeve with the smaller axial length is fitted to the binding sleeve with the smaller axial length. Figure 1In the illustrated example, the axial length of the first sleeve 9 is greater than the axial length of the second sleeve 13; the axial length of the first binding sleeve 10 is greater than the axial length of the second binding sleeve 12. For example, the axial length of the second sleeve 13 can be 5mm to 15mm, and the axial length of the first sleeve 9 can be 15mm to 30mm. Based on this, the cutting assembly is used to cut off the closed end of the first sleeve 9 after the adhesive has cured, so that the end of the hollow fiber membrane filament 11 contained therein is connected to the outside, forming an open end. In other words, the membrane filament opening at the first end of the hollow fiber membrane filament 11 is connected to the outside air. The cutting assembly may include cutting components commonly used in the art, such as a cutter, which can be understood by those skilled in the art based on the prior art, and will not be described in detail here. Preferably, the axial length of the cut portion of the first sleeve 9 is 10mm to 15mm.

[0052] The second end of the hollow fiber membrane filament 11 housed in the second sleeve 13 ( Figure 1 The upper end (middle) is the closed end and does not need to be cut off. The curing adhesive added to the second sleeve 13 is preferably a fast-curing adhesive, such as epoxy resin or polyurethane, with a curing time of less than 5 minutes and a viscosity of 1000 mPa·s to 2500 mPa·s, allowing the hollow fiber membrane filaments 11 in the second sleeve 13 to be quickly sealed and cured. Then, the assembly 15 is flipped so that the first sleeve 9 is flipped upwards. The curing adhesive added to the first sleeve 9 is preferably a low-viscosity curing adhesive, such as epoxy resin or polyurethane, with a curing time of 1 hour to 6 hours and a viscosity of less than 800 mPa·s, allowing the low-viscosity curing adhesive to be fully dispersed around the hollow fiber membrane filaments 11 and in full contact with them. When the end is subsequently cut off, the cured adhesive at the cut end is well cured, leaving no gaps between the membrane filaments. When manufacturing each hollow fiber membrane module, the amount of adhesive used for each module is quantitatively controlled to improve the consistency of each module.

[0053] Furthermore, the hollow fiber membrane module fabrication apparatus also includes a ranging component 16, which is used to detect the axial length between the cut end of the sleeve and the closed end of the other sleeve. Figure 1In the illustrated example, a portion of the end of the first sleeve 9 is removed by the cutting assembly to form a cut-off end, while the end of the second sleeve 13 does not need to be cut off, forming a closed end. The ranging assembly 16 is used to detect and obtain the axial length between the cut-off end of the first sleeve 9 and the closed end of the second sleeve 13. Then, combined with the number of hollow fiber membrane filaments 11 (e.g., using a known number of hollow fiber membrane filaments 11 inserted into a binding sleeve to fabricate the hollow fiber membrane assembly) and the inner diameter of the membrane filaments (e.g., selecting hollow fiber membrane filaments 11 of known specifications), the test surface area of ​​the hollow fiber membrane assembly can be calculated. The ranging assembly 16 may include an infrared rangefinder; those skilled in the art can understand the structure and operating principle of the infrared rangefinder based on existing technology, and will not be elaborated here.

[0054] Based on the hollow fiber membrane module preparation apparatus described above, this embodiment of the invention also provides a method for preparing a hollow fiber membrane module, comprising:

[0055] Step 1: Provide a binding sleeve and insert a bundle of hollow fiber membrane filaments 11 into the binding sleeve;

[0056] Step 2: Tighten the binding sleeve radially to bind the hollow fiber membrane filament 11;

[0057] Step 3: Drive the binding sleeve to move axially to one end of the hollow fiber membrane filament 11, and then place the end with the binding sleeve into the sleeve, preferably so that the end of the hollow fiber membrane filament 11 contacts the bottom of the sleeve;

[0058] Step 4: Expand the binding sleeve radially, and after loosening the hollow fiber membrane filament 11, move the binding sleeve axially out of the sleeve;

[0059] Step 5: Inject adhesive into the sleeve to fix the hollow fiber membrane filament 11 housed in the sleeve.

[0060] Optionally, after step four, the method for preparing the hollow fiber membrane module further includes: placing the binding sleeve above the sleeve and radially tightening the binding sleeve to bind the hollow fiber membrane filaments 11. This step serves to bind the hollow fiber membrane filaments 11 to a straight state.

[0061] Furthermore, steps one to five are performed at both ends of the hollow fiber membrane filament 11, and the method for preparing the hollow fiber membrane assembly further includes: step six: after the adhesive is injected and cured, one closed end of the sleeve is cut off to open one end of the hollow fiber membrane filament 11.

[0062] Optionally, after step six, the method for preparing the hollow fiber membrane module further includes:

[0063] Step 7: Obtain the axial length between the cut of the sleeve with the closed end removed and the closed end of the other sleeve.

[0064] In summary, in the hollow fiber membrane module preparation apparatus and preparation method provided by the present invention, the hollow fiber membrane module preparation apparatus includes: a sleeve, a binding sleeve, and a glue injection assembly; the axial direction of the binding sleeve coincides with the axial direction of the sleeve, the binding sleeve is movable along the axial direction, and the binding sleeve is expandable and contractible along the radial direction; the binding sleeve is configured to contract radially to bind the hollow fiber membrane filaments, and move axially into the sleeve; the binding sleeve is also configured to expand radially to relax the hollow fiber membrane filaments, and then move axially out of the sleeve; the sleeve has a cylindrical structure, including a closed end and an open end, the bottom of the closed end being used to contact the end of the hollow fiber membrane filaments; the glue injection assembly is connected to the sleeve, and the glue injection assembly is used to inject glue into the sleeve to fix the hollow fiber membrane filaments housed in the sleeve. This configuration, through the sequential setting and use of the sleeve, binding sleeve, and glue injection assembly, can accurately and reliably fix the hollow fiber membrane filaments in the sleeve, improving the preparation efficiency of the hollow fiber membrane test assembly, shortening the preparation time, increasing the success rate of test assembly preparation, simplifying the preparation of the test assembly, and effectively controlling the preparation errors between test assemblies.

[0065] It should be noted that the above embodiments can be combined with each other. The above description is only a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An apparatus for preparing a hollow fiber membrane module, characterized in that, include: Sleeves, restraint sleeves, and glue injection components; The axial direction of the restraining sleeve coincides with the axial direction of the sleeve, the restraining sleeve is movable along the axial direction, and the restraining sleeve is retractable in the radial direction. The binding sleeve is configured to contract radially to bind the hollow fiber membrane filaments and move axially into the sleeve; the binding sleeve is also configured to expand radially to relax the hollow fiber membrane filaments and then move axially out of the sleeve, so that the end of the hollow fiber membrane filaments can remain in the sleeve; thereafter, the binding sleeve remains above the sleeve, binding the middle part of the hollow fiber membrane filaments. The sleeve has a cylindrical structure, including a closed end and an open end, and the bottom of the closed end is used to contact the end of the hollow fiber membrane filament; The glue injection assembly is connected to the sleeve. The glue injection assembly is used to inject glue into the sleeve after the hollow fiber membrane filament is bound in the middle by the binding sleeve, so as to fix the hollow fiber membrane filament housed in the sleeve.

2. The apparatus for preparing a hollow fiber membrane module according to claim 1, characterized in that, There are two sleeves and two binding sleeves, and each sleeve and binding sleeve corresponds to one another. The two sleeves are arranged at an axial interval, and the two binding sleeves are located between the two sleeves.

3. The apparatus for preparing a hollow fiber membrane module according to claim 2, characterized in that, The apparatus for preparing the hollow fiber membrane module includes a flipping assembly, which is rotatably arranged around a flipping axis that is angled to the axis of the sleeve; both sleeves and both binding sleeves are connected to the flipping assembly; and the glue injection assembly is detachably connected to the two sleeves in sequence.

4. The apparatus for preparing a hollow fiber membrane module according to claim 3, characterized in that, The flipping assembly includes a connecting rod and a flipping bracket; one end of the connecting rod is connected to the restraint sleeve, and the other end of the connecting rod is movably connected to the flipping bracket along the axial direction of the sleeve.

5. The apparatus for preparing a hollow fiber membrane module according to claim 3, characterized in that, The flipping axis is perpendicular to the axial direction of the sleeve.

6. The apparatus for preparing a hollow fiber membrane module according to claim 2, characterized in that, The apparatus for preparing the hollow fiber membrane module includes a cutting component, which is used to cut off the closed end of one of the sleeves after adhesive injection and curing, so that one end of the hollow fiber membrane filament inside it is connected to the outside.

7. The apparatus for preparing a hollow fiber membrane module according to claim 6, characterized in that, The apparatus for preparing the hollow fiber membrane module further includes a ranging component, which is used to detect the axial length between the cut end of the sleeve and the closed end of the other sleeve.

8. The apparatus for preparing a hollow fiber membrane module according to claim 6, characterized in that, The axial length of the cut-off portion of the sleeve is 10mm~15mm.

9. The apparatus for preparing a hollow fiber membrane module according to claim 2, characterized in that, The axial length of one sleeve is greater than the axial length of the other sleeve; the axial length of one restraining sleeve is greater than the axial length of the other restraining sleeve; the sleeve with the larger axial length is correspondingly adapted to the restraining sleeve with the larger axial length, and the sleeve with the smaller axial length is correspondingly adapted to the restraining sleeve with the smaller axial length.

10. A method for preparing a hollow fiber membrane module, characterized in that, include: Step 1: Provide a binding sleeve and thread a bundle of hollow fiber membrane filaments into the binding sleeve; Step 2: Tighten the binding sleeve radially to bind the hollow fiber membrane filaments; Step 3: Drive the binding sleeve to move axially to one end of the hollow fiber membrane filament, and then place the end with the binding sleeve into the sleeve; Step 4: Expand the binding sleeve radially to loosen the hollow fiber membrane filaments, and then move the binding sleeve axially out of the sleeve; place the binding sleeve above the sleeve and tighten the binding sleeve radially to bind the hollow fiber membrane filaments. Step 5: Inject adhesive into the sleeve to fix the hollow fiber membrane filament housed within the sleeve.

11. The method for preparing a hollow fiber membrane module according to claim 10, characterized in that, Steps one through five are performed at both ends of the hollow fiber membrane filament, and the method for preparing the hollow fiber membrane module further includes: Step 6: After the adhesive has cured, cut off one of the closed ends of the sleeve to open one end of the hollow fiber membrane filament.

12. The method for preparing a hollow fiber membrane module according to claim 11, characterized in that, Following step six, the method for preparing the hollow fiber membrane module further includes: Step 7: Obtain the axial length between the cut of the sleeve with the closed end removed and the closed end of the other sleeve.

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