CN112546869B - Method for manufacturing hollow fiber membrane element - Google Patents
Method for manufacturing hollow fiber membrane element Download PDFInfo
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- CN112546869B CN112546869B CN202011194632.8A CN202011194632A CN112546869B CN 112546869 B CN112546869 B CN 112546869B CN 202011194632 A CN202011194632 A CN 202011194632A CN 112546869 B CN112546869 B CN 112546869B
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- hollow fiber
- fiber membrane
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- shell
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- 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
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
- B01D63/023—Encapsulating materials
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Abstract
The utility model provides a hollow fiber membrane element, includes the casing and locates hollow fiber membrane and the center tube in the casing, and aforementioned casing has water inlet and water purification export, its characterized in that hollow fiber membrane for bond respectively and the fifty percent discount bonds the hollow fiber diaphragm that is the U type that forms by many hollow fiber membrane silk parallel arrangement back both ends, the one end that this hollow fiber diaphragm buckled seals and forms the blind end, and the other end centre bore opening that bonds forms the opening end, the hollow fiber diaphragm uses the axis of center tube to coil in the center tube as the center pin, and aforementioned at least one end opening of center tube and side direction are formed with the water conservancy diversion hole. The invention also discloses a manufacturing method of the hollow fiber membrane element. The manufacturing time of the invention is greatly shortened; the end face does not need to be cut, the utilization rate of the hollow fiber is improved, the manufacturing process is reduced, and the equipment research and development and manufacturing production cost are greatly reduced.
Description
Technical Field
The invention relates to a water filtration membrane component, in particular to a hollow fiber membrane component and a manufacturing method thereof.
Background
Most of the manufacturing processes of hollow fiber membrane elements in the domestic market at present are manual, the automation degree is low, the manufacturing process is unreasonable, the structural consistency is poor, and the concentration polarization and the utilization rate are low due to uneven fiber arrangement and internal arrangement of the packaging end face of the membrane element.
Most hollow fiber membrane elements use the operation in-process, because the accumulation of filtrate impurity to and the internal pressure of water team membrane element makes hollow fiber filter core membrane become to gather together to concentrate densely and tightly when using, the unable abundant contact water of inside part hollow fiber membrane, and then produces concentration polarization, the problem that the pollutant can't be got rid of smoothly has reduced the performance of membrane element, finally makes hollow fiber filter core membrane element life greatly reduced.
Most of the manufacturing processes of hollow fiber membrane elements need to cut and finish the hollow fiber membranes for many times, the membrane elements need to be cut again after being packaged, the hollow fiber membranes are seriously wasted, the process loss of the adhesive is also large, various devices are needed for cutting and packaging, and membrane elements and environment pollution are easily caused by cutting dust.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a hollow fiber membrane element with uniform fiber arrangement on the package end face and uniform arrangement inside the package end face, aiming at the technical current situation.
The second technical problem to be solved by the present invention is to provide a method for preparing a hollow fiber membrane element with uniform fiber arrangement on the end face of the package and uniform arrangement inside the package, in view of the above technical situation.
A third technical problem to be solved by the present invention is to provide a method for producing a hollow fiber membrane element with high production efficiency and low cost, in view of the above-mentioned technical situation.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a hollow fiber membrane element, includes the casing and locates hollow fiber membrane and the center tube in the casing, and aforementioned casing has water inlet and water purification export, its characterized in that hollow fiber membrane for bond respectively and the fifty percent discount bonds the hollow fiber diaphragm that is the U type that forms at both ends again by many hollow fiber membrane silk parallel arrangement back both ends, the one end that this hollow fiber diaphragm buckled seals and forms the blind end, and the other end centre bore opening that bonds forms the opening end, the hollow fiber diaphragm uses the axis of center tube to coil up in the center tube as the center pin, the blind end and the opening end of hollow fiber membrane are located the ascending both ends of length direction of center tube respectively, and the at least one end opening of aforementioned center tube and side direction are formed with the water conservancy diversion hole.
Preferably, the shell comprises a shell, a water collecting cover arranged at the port of the shell and a connecting pipe arranged in a central through hole of the water collecting cover, wherein a concentrated water outlet is formed at the bottom of the shell, a water inlet is formed at the outer end of the connecting pipe, the inner end of the connecting pipe is hermetically connected with one end of the central pipe, a purified water outlet is formed between the water collecting cover and the connecting pipe, and the purified water outlet is arranged around the water inlet.
Furthermore, the shell comprises a base and an outer cover arranged on the base, the base is axially hollow, the open end of the hollow fiber membrane is positioned in the base, one end of the open end of the outer cover is fixedly connected with the base, and the bottom of the outer cover forms the concentrated water outlet.
The central tube can be internally provided with a clapboard part or the central tube is axially communicated.
Furthermore, a separation flow guide net is arranged between the hollow fiber membranes.
The technical scheme adopted by the invention for solving the second and third technical problems is as follows: a method for manufacturing a hollow fiber membrane element is characterized by comprising the following steps:
firstly, orderly arranging a plurality of hollow fiber membrane filaments with certain lengths to the width required by a membrane element according to a certain distance, then respectively coating an adhesive on two ends of each hollow fiber membrane filament, and fixedly connecting the two ends of each hollow fiber membrane filament; folding a plurality of hollow fiber membrane wires, gluing and bonding two ends of the hollow fiber membrane wires to enable the two ends to be combined into a double-layer end, so as to manufacture a U-shaped hollow fiber membrane, wherein the glued and bonded end of the hollow fiber membrane forms an open end, and the other bent end of the hollow fiber membrane forms a closed end;
secondly, coating an adhesive on the central tube, keeping the hollow fiber membrane tensioned in a mode that the hollow fiber membrane takes the central axis of the central tube as a central axis and the closed end and the open end of the hollow fiber membrane are respectively positioned at two ends of the central tube in the length direction, and winding the hollow fiber membrane on the central tube in order;
thirdly, sealing the open end of the hollow fiber membrane by using the adhesive tape to obtain a membrane assembly;
putting the base into a packaging jig, putting the open end of the membrane component into the base, adding an adhesive to fill the gaps between the hollow fiber membranes and the base, removing the packaging jig after curing, and removing the adhesive tape to finish bonding, fixing and packaging;
fifthly, assembling the outer cover, assembling the water collecting cover on the base, and finally installing the connecting pipe to finish the membrane element manufacture.
Preferably, the bonding width of the adhesive applied to the end of the hollow fiber membrane filament is 10mm to 30mm, and the thickness of the adhesive layer is 0.5mm or more larger than the diameter of the hollow fiber membrane filament.
Furthermore, a separation flow guide net is bonded in the middle of the hollow fiber membrane before the hollow fiber membrane is wound on the central pipe.
Preferably, the adhesive is a rapid curing agent.
Compared with the prior art, the invention has the advantages that: according to the invention, epoxy resin or polyurethane resin and a matched tool clamp are not required to be used for encapsulating, so that the material cost and the manufacturing cost are reduced; the end face does not need to be cut, the utilization rate of the hollow fiber membrane is improved, the manufacturing process is reduced, and the equipment research and development and manufacturing production cost are greatly reduced; the end faces and the interior of the hollow fiber membranes are arranged in a certain sequence, the structure consistency of the membrane elements is controllable, and the size of the gap between the hollow fiber membranes at the fixed end is consistent and controllable, so that the channels of water flow in the membrane elements are uniform, the concentration polarization resistance of the hollow fiber membranes is improved, and the filtering performance of the membrane elements is also greatly improved;
the hollow fiber membrane of the membrane element has one end which is a semi-free end or a free end, and the fiber membrane can move in a certain range, so that pollutants are easier to remove, the maintenance and cleaning frequency is reduced, and the service life of the membrane element is prolonged.
The film element can be filled and sealed by 5g-10g as little as 5g of resin adhesive, the adhesive can be quickly cured, the defects of wire burning, curing overheating and implosion, overlarge part deformation, fixed adhesive layer air holes, siphon climbing of the adhesive due to surface tension and the like caused by a large amount of heat generated in a chemical reaction when the amount of the quick-drying adhesive is large are avoided, the frequency and the working strength of detection and inspection steps in the manufacturing process are further reduced, and the qualification rate of film element manufacturing and the utilization rate of the film wires can be greatly improved. The end face or other procedures (such as air tightness detection) can be cut without waiting for the pouring sealant to react and solidify to reach the physical and chemical properties (the existing method and process are generally more than 24 hours), and the rapidly solidified adhesive can reach the completely solidified physical hardness within 2 hours or shorter, so that the consumed time is greatly shortened.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
FIG. 2 is a sectional view of example 1.
Fig. 3 is a cross-sectional view of the cross-section of fig. 1.
Fig. 4 is a schematic structural view of the integrated cover in embodiment 1.
Fig. 5 is a schematic view of a reduced structure of the hollow fiber membrane of example 1.
Fig. 6 is a schematic structural view of the hollow fiber membrane in example 1 after being folded in half.
Fig. 7 is a schematic view of the structure of the hollow fiber membrane sheet in example 1 after being wound.
Fig. 8 is a schematic view of the film assembly after being placed in the packaging fixture in embodiment 1.
FIG. 9 is a sectional view of example 2.
Fig. 10 is a cross-sectional view of example 2.
Figure 11 is a cross-sectional view of the center tube in example 3.
Figure 12 is a cross-sectional view of the center tube in example 4.
Figure 13 is a cross-sectional view of the center tube in example 5.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1 as shown in fig. 1 to 3, the hollow fiber membrane element of this example includes a housing 1, a hollow fiber membrane 3 and a center tube 2 provided in the housing 1,
casing 1 includes the shell, locate the cover 11 that catchments of shell port and locate the connecting pipe 4 that catchments the 11 central through-holes of cover, the shell bottom forms dense water export 1c, 4 outer ends of connecting pipe form water inlet 1a, 41 sealing connection are passed through to the inner end and the one end of center tube 2, the outer end of connecting pipe 4 also overlaps and is equipped with sealing washer 42, it has water purification export 1b to catchment between cover 11 and the connecting pipe 4, this water purification export 1b arranges around water inlet 1 a. The shell comprises a base 13 and an outer cover 12 arranged on the base 13, the base 13 is axially hollow, the open end of the hollow fiber membrane 5 is positioned in the base 13, the open end of the outer cover 12 is fixedly connected with the base 13, and the bottom of the outer cover forms a concentrated water outlet 1 c. The central tube 2 in this embodiment is assembled by an upper tube 21 and a lower tube 22, and a partition plate portion 24 is arranged in the upper tube 21 and a diversion hole 23 is formed in the lateral direction. The bottom end of the lower tube 22 fits into a groove in the base 13.
The hollow fiber membrane 3 is a U-shaped hollow fiber membrane 5 formed by respectively bonding and folding two ends of a plurality of hollow fiber membrane wires 51 after being arranged in parallel and bonding the two ends, one end of the hollow fiber membrane 5 bent is closed to form a closed end, the other end of the hollow fiber membrane 5 bonded is provided with a central hole opening to form an open end, the hollow fiber membrane 5 is wound on the central tube 2 by taking the central axis of the central tube 2 as a central axis, and the closed end 31 and the open end 32 of the hollow fiber membrane are respectively positioned at two ends of the central tube 2 in the length direction.
The method for manufacturing the hollow fiber membrane element in the embodiment includes the following steps:
firstly, orderly arranging a plurality of hollow fiber membrane filaments 51 with certain lengths to the width required by a membrane element according to a certain distance, then respectively coating adhesives at two ends of the hollow fiber membrane filaments 51, and respectively fixedly connecting two ends of the hollow fiber membrane filaments 51 to form an adhesive section 52, as shown in fig. 5; folding a plurality of hollow fiber membrane wires 51 in half, gluing and bonding two ends of the hollow fiber membrane wires, so that the two ends are combined into a double-layer end to form a U-shaped hollow fiber membrane 5, wherein the glued and bonded end of the hollow fiber membrane 5 forms an open end, and the other bent end forms a closed end, as shown in fig. 6; the bonding width of the adhesive coated on the end part of the hollow fiber membrane filament 51 is 10 mm-30 mm, and the thickness of the adhesive layer is more than 0.5mm larger than the diameter of the hollow fiber membrane;
secondly, coating an adhesive on the central tube 2, keeping the hollow fiber membrane 5 tensioned in a mode that the hollow fiber membrane 5 takes the central axis of the central tube 2 as the central axis and the closed end and the open end of the hollow fiber membrane 5 are respectively positioned at two ends of the central tube 2 in the length direction, and winding the hollow fiber membrane 5 on the central tube 2 in order;
thirdly, sealing the open end of the hollow fiber membrane by the adhesive tape 6 to obtain a membrane assembly, as shown in fig. 7;
putting the base 12 into the packaging jig 10, putting the open end of the membrane component into the base 12, adding an adhesive to fill the gaps between the hollow fiber membranes 5 and the base 12, as shown in fig. 8, after curing, removing the packaging jig 10, and then removing the adhesive tape 6 to complete bonding, fixing and packaging;
fifthly, the outer cover 13 is assembled, the water collecting cover 11 is assembled on the base 12, and finally the connecting pipe 4 is installed to complete the membrane element manufacturing.
The adhesive involved in this example is a fast curing agent.
In example 2, as shown in fig. 9 and 10, a separation flow guide net 7 is provided between the hollow fiber membranes 5 in this example. The manufacturing method comprises the following additional steps: before the hollow fiber membrane 5 is wound on the central tube 2, a separation flow guide net 7 is bonded in the middle of the hollow fiber membrane 5. The separation flow guide net 7 in this embodiment may be a nonwoven fabric, or may be a mesh layer. Other structures refer to example 1.
In embodiment 3, as shown in fig. 11, the central tube 2 in this embodiment is an axially penetrating integrated member, and the sidewall is provided with flow guide holes 23 along the length direction. Other structures refer to example 1.
Example 4, as shown in fig. 12, the center tube 2 of this example is a single piece and has a partition portion 24 in the middle, and the baffle hole 23 is opened in the side wall above the partition portion 24, and the other structure is referred to example 1.
In example 5, as shown in fig. 13, the central tube 2 in this example is a single piece, and the bottom of the central tube is sealed, and the sidewall near the bottom is provided with a diversion hole 23. Other structures refer to example 1.
Claims (6)
1. A manufacturing method of a hollow fiber membrane element is characterized in that the hollow fiber membrane element comprises a shell (1), a hollow fiber membrane (3) and a central tube (2) which are arranged in the shell (1), the shell (1) is provided with a water inlet (1a) and a purified water outlet (1b), the hollow fiber membrane (3) is a U-shaped hollow fiber membrane (5) which is formed by respectively bonding and folding two ends of a plurality of hollow fiber membrane wires (51) after being arranged in parallel, one bent end of the hollow fiber membrane (5) is sealed to form a closed end, a central hole at the other end of the bonded hollow fiber membrane (5) is opened to form an open end, the hollow fiber membrane (5) is wound on the central tube (2) by taking a central axis of the central tube (2) as a central axis, the closed end (31) and the open end (32) of the hollow fiber membrane are respectively positioned at two ends of the central tube (2) in the length direction, at least one end of the central tube (2) is opened and is laterally provided with a diversion hole (23);
the shell (1) comprises a shell, a water collecting cover (11) arranged at the port of the shell and a connecting pipe (4) arranged in a central through hole of the water collecting cover (11), wherein a concentrated water outlet (1c) is formed at the bottom of the shell, a water inlet (1a) is formed at the outer end of the connecting pipe (4), the inner end of the connecting pipe is hermetically connected with one end of a central pipe (2), a purified water outlet (1b) is formed between the water collecting cover (11) and the connecting pipe (4), and the purified water outlet (1b) is arranged around the water inlet (1 a);
the shell comprises a base (12) and an outer cover (13) arranged on the base (12), the base (12) is axially hollow, the open end of the hollow fiber membrane (5) is positioned in the base (12), one open end of the outer cover (13) is fixedly connected with the base (12), and the bottom of the outer cover forms the concentrated water outlet (1 c);
the method comprises the following steps:
firstly, orderly arranging a plurality of hollow fiber membrane filaments (51) with certain lengths to the required width of a membrane element according to a certain distance, then respectively coating adhesives on two ends of the hollow fiber membrane filaments (51), and fixedly connecting the two ends of the hollow fiber membrane filaments (51); folding a plurality of hollow fiber membrane wires (51) in half, gluing and bonding two ends of the hollow fiber membrane wires to enable the two ends to be combined into a double-layer end to manufacture a U-shaped hollow fiber membrane (5), wherein one end of the hollow fiber membrane (5) glued and bonded forms an open end, and the other bent end forms a closed end;
secondly, coating an adhesive on the central tube (2), keeping the hollow fiber membrane (5) tensioned in a mode that the hollow fiber membrane (5) takes the central axis of the central tube (2) as a central axis and the closed end and the open end of the hollow fiber membrane (5) are respectively positioned at two ends of the central tube (2) in the length direction, and winding the hollow fiber membrane (5) on the central tube (2) in order;
thirdly, sealing the open end of the hollow fiber membrane by the adhesive tape (6) to obtain a membrane component;
putting the base (12) into an encapsulation jig (10), putting the open end of the membrane component into the base (12), adding an adhesive to fill the gaps between the hollow fiber membranes (5) and the base (12), removing the encapsulation jig (10) after curing, and removing the adhesive tape (6) to finish bonding, fixing and encapsulating;
fifthly, assembling the outer cover (13), assembling the water collecting cover (11) on the base (12), and finally installing the connecting pipe (4) to finish the membrane element manufacture.
2. Method according to claim 1, characterized in that a partition (24) is provided in the central tube (2) or the central tube (2) is axially through-passed.
3. The manufacturing method according to claim 1, characterized in that a separation flow guide net (7) is arranged between the hollow fiber membranes (5).
4. The production method according to claim 1, wherein the adhesive bonding width applied to the end of the hollow fiber membrane filament (51) is 10mm to 30mm, and the thickness of the adhesive layer is 0.5mm or more larger than the diameter of the hollow fiber membrane.
5. The production method according to claim 1, characterized in that a separation flow guide net (7) is bonded to the middle of the hollow fiber membrane (5) before the hollow fiber membrane (5) is wound around the central tube (2).
6. The method of claim 1, wherein the adhesive is a fast curing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194632.8A CN112546869B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011194632.8A CN112546869B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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| CN112546869A CN112546869A (en) | 2021-03-26 |
| CN112546869B true CN112546869B (en) | 2022-03-18 |
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| CN202011194632.8A Active CN112546869B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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Citations (8)
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|---|---|---|---|---|
| EP0082185A1 (en) * | 1981-06-29 | 1983-06-29 | Baxter Travenol Lab | Microporous hollow fiber membrane assembly and its method of manufacture. |
| JPH04367714A (en) * | 1991-06-13 | 1992-12-21 | Mitsubishi Rayon Co Ltd | Sheet of porous hollow-fiber membrane |
| CN1151706A (en) * | 1994-07-01 | 1997-06-11 | 米利波尔公司 | Thermoplastic hollow fiber member module and method of manufacture |
| CN106139909A (en) * | 2016-08-24 | 2016-11-23 | 杭州汉膜新材料科技有限公司 | A kind of water purifier membrane module and method for packing thereof |
| CN107661697A (en) * | 2016-07-28 | 2018-02-06 | 三菱化学株式会社 | The manufacture device of the manufacture method of hollow fiber film assembly, the manufacture device of layered product and hollow fiber film assembly |
| CN210303191U (en) * | 2018-10-15 | 2020-04-14 | 周明 | Direct drinking water is with swift external pressure type central authorities water treatment ware of loading and unloading |
| CN111359444A (en) * | 2018-12-26 | 2020-07-03 | 宁波方太厨具有限公司 | Hollow fiber membrane filter element and packaging method thereof |
| CN111389230A (en) * | 2019-01-03 | 2020-07-10 | 宁波方太厨具有限公司 | Hollow fiber membrane filter element and packaging method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8540081B2 (en) * | 2011-03-16 | 2013-09-24 | Markel Corporation | Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro-terpolymer bonded end portion(s) and method to fabricate |
-
2020
- 2020-10-30 CN CN202011194632.8A patent/CN112546869B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0082185A1 (en) * | 1981-06-29 | 1983-06-29 | Baxter Travenol Lab | Microporous hollow fiber membrane assembly and its method of manufacture. |
| JPH04367714A (en) * | 1991-06-13 | 1992-12-21 | Mitsubishi Rayon Co Ltd | Sheet of porous hollow-fiber membrane |
| CN1151706A (en) * | 1994-07-01 | 1997-06-11 | 米利波尔公司 | Thermoplastic hollow fiber member module and method of manufacture |
| CN107661697A (en) * | 2016-07-28 | 2018-02-06 | 三菱化学株式会社 | The manufacture device of the manufacture method of hollow fiber film assembly, the manufacture device of layered product and hollow fiber film assembly |
| CN106139909A (en) * | 2016-08-24 | 2016-11-23 | 杭州汉膜新材料科技有限公司 | A kind of water purifier membrane module and method for packing thereof |
| CN210303191U (en) * | 2018-10-15 | 2020-04-14 | 周明 | Direct drinking water is with swift external pressure type central authorities water treatment ware of loading and unloading |
| CN111359444A (en) * | 2018-12-26 | 2020-07-03 | 宁波方太厨具有限公司 | Hollow fiber membrane filter element and packaging method thereof |
| CN111389230A (en) * | 2019-01-03 | 2020-07-10 | 宁波方太厨具有限公司 | Hollow fiber membrane filter element and packaging method thereof |
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