CN112546874A - Hollow fiber membrane element and method for producing same - Google Patents
Hollow fiber membrane element and method for producing same Download PDFInfo
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- CN112546874A CN112546874A CN202011189362.1A CN202011189362A CN112546874A CN 112546874 A CN112546874 A CN 112546874A CN 202011189362 A CN202011189362 A CN 202011189362A CN 112546874 A CN112546874 A CN 112546874A
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- 239000012528 membrane Substances 0.000 title claims abstract description 206
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 178
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000853 adhesive Substances 0.000 claims description 39
- 230000001070 adhesive effect Effects 0.000 claims description 39
- 239000002390 adhesive tape Substances 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims 4
- 238000000746 purification Methods 0.000 abstract description 4
- 238000012827 research and development Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 description 15
- 239000000835 fiber Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000004819 Drying adhesive Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
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, water purification export and dense water export, its characterized in that hollow fiber membrane be by many hollow fiber membrane silk parallel arrangement back and at least one end bonding hollow fiber diaphragm that forms, the one end centre bore of this hollow fiber diaphragm seals and forms the blind end, other end centre bore opening forms the opening end, hollow fiber diaphragm uses the center tube to coil in the center tube as the center pin, and aforementioned at least one end opening of center tube is formed with the water conservancy diversion hole laterally. 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, water purification export and dense water export, its characterized in that hollow fiber membrane be by many hollow fiber membrane silk parallel arrangement back and the hollow fiber diaphragm that at least one end bonded formed, the one end centre bore of this hollow fiber diaphragm seals and forms the blind end, and other end centre bore opening forms the opening end, hollow fiber diaphragm uses the center tube to coil 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 is formed with the water conservancy diversion hole in the side direction.
The hollow fiber membrane body may take the form of one of:
first, the hollow fiber membrane is a hollow fiber membrane sheet formed by a plurality of hollow fiber membrane filaments which are arranged in parallel and are respectively bonded at two ends.
And the hollow fiber membrane is a hollow fiber membrane formed by splicing a plurality of hollow fiber membrane wires which are arranged in parallel and one end of the hollow fiber membrane wire is a free end, the central hole of the spliced end of the hollow fiber membrane is opened to form an open end, and the central hole of the free end of the other end of the hollow fiber membrane is closed to form a closed end.
The casing can include the shell, locate the lid that catchments of shell port and locate the connecting pipe that catchments lid central through hole, aforementioned shell bottom forms the dense water export, aforementioned connecting pipe outer end forms the water inlet, the one end sealing connection of inner end and center tube, the water purification export has between aforementioned lid that catchments and the connecting pipe, this water purification export is arranged around the water inlet.
The central tube can be internally provided with a clapboard part or the central tube is axially communicated.
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.
Furthermore, a separation flow guide net is arranged between the hollow fiber membranes.
The invention can adopt one of the following technical schemes for solving the second and third technical problems:
first, a method for manufacturing a hollow fiber membrane element is characterized by comprising the steps of:
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; plugging a central hole at one end of the hollow fiber membrane wire by using an adhesive to form a closed end, and opening a central hole at the other end to form an open end to prepare a hollow fiber membrane;
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.
Secondly, 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, and then coating an adhesive on one end of each hollow fiber membrane filament to fixedly connect one end of each hollow fiber membrane filament and freely disperse the other end of each hollow fiber membrane filament; plugging one end of the hollow fiber membrane wire with an adhesive to form a closed end, and opening a central hole at the other end to form an open end to prepare a hollow fiber membrane;
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.
Further, 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 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 the structure of a hollow fiber membrane in example 1.
Fig. 6 is a schematic view of the structure of the hollow fiber membrane sheet in example 1 after being wound.
Fig. 7 is a schematic view of the film assembly after being placed in the packaging fixture in embodiment 1.
FIG. 8 is a sectional view of example 2.
Fig. 9 is a schematic view of the structure of a hollow fiber membrane in example 2.
FIG. 10 is a sectional view of example 3.
FIG. 11 is a cross-sectional view of 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.
Figure 14 is a cross-sectional view of the center tube of example 6.
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 in this example includes a housing 1, a hollow fiber membrane 3 provided in the housing 1, and a center tube 2.
As shown in the combined figure 4, 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, 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 in sealing connection with one end of a central pipe 2 through a sealing ring 41, a sealing ring 42 is sleeved at the outer end of the connecting pipe 4, a purified water outlet 1b is formed between the water collecting cover 11 and the connecting pipe 4, and the purified water outlet 1 b. 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 hollow fiber membrane 5 formed by respectively bonding two ends of a plurality of hollow fiber membrane filaments 51 after being arranged in parallel, a central hole at one end of the hollow fiber membrane 5 is sealed to form a closed end, a central hole at the other end of the 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 the central tube 2 as a central shaft, and the closed end 31 and the open end 32 of the hollow fiber membrane 3 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; plugging a central hole at one end of the hollow fiber membrane wire 51 by using an adhesive to form a closed end, and opening a central hole at the other end to form an open end to prepare a hollow fiber membrane 5; 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. 6;
putting the base 13 into the packaging jig 10, putting the open end of the membrane component into the base 13, adding an adhesive to fill the gaps between the hollow fiber membranes 5 and the base 13, removing the packaging jig 10 after curing, removing the adhesive tape 6, and completing bonding, fixing and packaging as shown in fig. 7;
fifthly, the outer cover 12 is assembled, the water collecting cover 11 is assembled on the base 13, and finally the connecting pipe 4 is installed, so that the membrane element is manufactured.
The adhesive involved in this example is a fast curing agent.
In example 2, as shown in fig. 8, the hollow fiber membrane 3 in this example is a hollow fiber membrane sheet 5 in which a plurality of hollow fiber membrane filaments 51 are arranged in parallel and one end is bonded, and the other end is a free end, and the bonded end of the hollow fiber membrane sheet 5 has an open center hole to form an open end and the other end has a closed center hole to form a closed end. Other structures refer to example 1.
The manufacturing method of the hollow fiber membrane element in the embodiment comprises 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 coating an adhesive on one end of each hollow fiber membrane filament 51 to fixedly connect one end of each hollow fiber membrane filament 51 to form an adhesive section 52, and freely dispersing the other end of each hollow fiber membrane filament 51, as shown in fig. 9; plugging one end of the hollow fiber membrane wire 51 with an adhesive to form a closed end, and opening a central hole at the other end to form an open end to prepare a hollow fiber membrane 5; 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 component;
putting the base 13 into the packaging jig 10, putting the open end of the membrane component into the base 13, adding an adhesive to fill the gaps between the hollow fiber membranes 5 and the base 13, after curing, removing the packaging jig 10, and removing the adhesive tape 6 to complete bonding, fixing and packaging;
fifthly, the outer cover 12 is assembled, the water collecting cover 11 is assembled on the base 13, and finally the connecting pipe 4 is installed, so that the membrane element is manufactured.
The adhesive involved in this example is a fast curing agent.
Example 3 as shown in fig. 10 and 11, 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 4, as shown in fig. 12, 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 5, as shown in fig. 13, 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 6, as shown in fig. 14, 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 (12)
1. A 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), wherein the shell (1) is provided with a water inlet (1a), a purified water outlet (1b) and a concentrated water outlet (1c), it is characterized in that the hollow fiber membrane (3) is a hollow fiber membrane (5) formed by parallelly arranging a plurality of hollow fiber membrane wires (51) and bonding at least one end, one end of the hollow fiber membrane (5) has a closed center hole and an open center hole to form a closed end, the hollow fiber membrane (5) is wound on the central pipe (2) by taking the central pipe (2) as a central shaft, the closed end (31) and the open end (32) of the hollow fiber membrane (3) are respectively positioned at two ends of the central tube (2) in the length direction, and at least one end of the central tube (2) is open and is laterally provided with a flow guide hole (23).
2. The hollow fiber membrane element according to claim 1, wherein the hollow fiber membrane (3) is a hollow fiber membrane sheet (5) in which a plurality of hollow fiber membrane filaments (51) are arranged in parallel and both ends thereof are bonded to each other.
3. The hollow fiber membrane element according to claim 1, wherein the hollow fiber membrane (3) is a hollow fiber membrane sheet (5) formed by bonding one end of a plurality of hollow fiber membrane filaments (51) arranged in parallel, and the other end is a free end, the bonded end of the hollow fiber membrane sheet (5) has a central hole opened to form an open end, and the other end has a central hole closed to form a closed end.
4. The hollow fiber membrane element according to claim 1, 2 or 3, wherein the housing (1) comprises a housing, a water collecting cover (11) provided at a port of the housing, and a connecting pipe (4) provided at a central through hole of the water collecting cover (11), wherein a concentrated water outlet (1c) is formed at the bottom of the housing, a water inlet (1a) is formed at an outer end of the connecting pipe (4), an inner end of the connecting pipe is hermetically connected with one end of the 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).
5. Hollow fiber membrane element according to claim 4, characterized in that a separator part is provided in the central tube (2) or the central tube (2) is axially through-going.
6. The hollow fiber membrane element of claim 4, wherein the housing comprises a base (13) and a cover (12) disposed 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 cover (12) is fixedly connected to the base (13), and the bottom forms the concentrated water outlet (1 c).
7. The hollow fiber membrane element according to claim 1 or 2 or 3, characterized in that a separation flow guide net (7) is provided between the hollow fiber membrane sheets (5).
8. A method of manufacturing the hollow fiber membrane element of claim 6, characterized by comprising the steps of:
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); plugging a central hole at one end of a hollow fiber membrane wire (51) by using an adhesive to form a closed end, and opening a central hole at the other end to form an open end to prepare a hollow fiber membrane (5);
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 (13) into an encapsulation jig (10), putting the open end of the membrane component into the base (13), adding an adhesive to fill the gaps between the hollow fiber membranes (5) and the base (13), removing the encapsulation jig (10) after curing, and removing the adhesive tape (6) to finish bonding, fixing and encapsulating;
fifthly, assembling the outer cover (12), assembling the water collecting cover (11) on the base (13), and finally installing the connecting pipe (4) to finish the membrane element manufacture.
9. A method of manufacturing the hollow fiber membrane element of claim 6, characterized by comprising the steps of:
firstly, orderly arranging a plurality of hollow fiber membrane filaments (51) with certain length to the required width of a membrane element according to a certain distance, and then coating an adhesive on one end of each hollow fiber membrane filament (51) to fixedly connect one end of each hollow fiber membrane filament (51) and freely disperse the other end of each hollow fiber membrane filament; plugging one end of a hollow fiber membrane wire (51) by using an adhesive to form a closed end, and opening a central hole at the other end to form an open end to prepare a hollow fiber membrane (5);
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 (13) into an encapsulation jig (10), putting the open end of the membrane component into the base (13), adding an adhesive to fill the gaps between the hollow fiber membranes (5) and the base (13), removing the encapsulation jig (10) after curing, and removing the adhesive tape (6) to finish bonding, fixing and encapsulating;
fifthly, assembling the outer cover (12), assembling the water collecting cover (11) on the base (13), and finally installing the connecting pipe (4) to finish the membrane element manufacture.
10. The method according to claim 8 or 9, wherein the adhesive applied to the end of the hollow fiber membrane filaments (51) has a bonding width of 10mm to 30mm, and a thickness of the adhesive layer is 0.5mm or more larger than the diameter of the hollow fiber membrane.
11. The production method according to claim 8 or 9, 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).
12. The method of claim 8 or 9, wherein the adhesive is a fast curing agent.
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| CN202011189362.1A CN112546874B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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| CN202011189362.1A CN112546874B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010211A (en) * | 2022-02-09 | 2022-09-06 | 甘肃农业大学 | Drinking water purification mechanism and rural drinking water machine |
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| CN115010211A (en) * | 2022-02-09 | 2022-09-06 | 甘肃农业大学 | Drinking water purification mechanism and rural drinking water machine |
| CN115010211B (en) * | 2022-02-09 | 2023-10-17 | 甘肃农业大学 | Drinking water purifying mechanism and rural drinking water machine |
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