CN112546874B - Method for manufacturing hollow fiber membrane element - Google Patents
Method for manufacturing hollow fiber membrane element Download PDFInfo
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- CN112546874B CN112546874B CN202011189362.1A CN202011189362A CN112546874B CN 112546874 B CN112546874 B CN 112546874B CN 202011189362 A CN202011189362 A CN 202011189362A CN 112546874 B CN112546874 B CN 112546874B
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- hollow fiber
- fiber membrane
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- central tube
- central
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- 239000012528 membrane Substances 0.000 title claims abstract description 209
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 173
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000008213 purified water Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims description 38
- 230000001070 adhesive effect Effects 0.000 claims description 38
- 238000004806 packaging method and process Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 13
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 238000012827 research and development Methods 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 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
- 239000010410 layer Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004819 Drying adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004880 explosion Methods 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
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 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
- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Abstract
The hollow fiber membrane element comprises a shell, and a hollow fiber membrane and a central tube which are arranged in the shell, wherein the shell is provided with a water inlet, a purified water outlet and a concentrated water outlet. 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 procedure is reduced, and the equipment research and development and manufacturing production cost is greatly reduced.
Description
Technical Field
The invention relates to a water filtering membrane component, in particular to a hollow fiber membrane component and a manufacturing method thereof.
Background
Most of the hollow fiber membrane element manufacturing processes in the current domestic market are manual, the degree of automation is low, the manufacturing process is unreasonable, the structural consistency is poor, and concentration polarization and low utilization rate are caused by uneven fiber arrangement of the end face of the membrane element package and the inner arrangement thereof.
In the use and operation process of most hollow fiber membrane elements, as the impurities in the filtrate accumulate and the internal pressure of the water team membrane elements during use, the hollow fiber filter element membranes become concentrated and compact, the internal part of the hollow fiber membranes cannot fully contact water, so that concentration polarization is generated, pollutants cannot be smoothly removed, the performance of the membrane elements is reduced, and finally the service life of the hollow fiber filter element membrane elements is greatly reduced.
Most of the manufacturing processes of the hollow fiber membrane elements need to cut and finish the hollow fiber membranes for multiple times, the hollow fiber membranes need to be cut again after the membrane elements are packaged, the waste of the hollow fiber membranes is serious, the adhesive manufacturability loss is large, various devices are needed for cutting and packaging, and the cutting dust is easy to cause pollution to the membrane elements and the environment.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a hollow fiber membrane element with uniformly arranged fibers at the end face of the package and the inner arrangement thereof.
The second technical problem to be solved by the present invention is to provide a method for preparing hollow fiber membrane elements with uniformly arranged fibers at the end face of the package and the inner arrangement thereof, aiming at the above state of the art.
The third technical problem to be solved by the present invention is to provide a method for preparing a hollow fiber membrane element with high production efficiency and low cost.
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 foretell casing has water inlet, clean water export and dense water export, its characterized in that hollow fiber membrane be by the hollow fiber membrane that the at least one end of many hollow fiber membrane silk parallel arrangement back formed of bonding, the one end centre bore of this hollow fiber membrane seals and forms the blind end, the other end centre bore opening forms open end, hollow fiber membrane takes the center tube to coil in the center tube as the center pin, the blind end and the open end of hollow fiber membrane are located the both ends on the length direction of center tube respectively, the at least one end opening of foretell center tube and side direction are formed with the water conservancy diversion hole.
The hollow fiber membrane may specifically take the form of one of the following:
the first kind of hollow fiber membrane is one with several hollow fiber membrane wires in parallel and adhered separately.
And secondly, the hollow fiber membrane is a hollow fiber membrane formed by bonding one ends of a plurality of hollow fiber membrane wires which are arranged in parallel, the other ends of the hollow fiber membrane are free ends, the central holes of the bonded ends of the hollow fiber membrane are open to form open ends, and the central holes of the free ends of the other ends of the hollow fiber membrane are closed to form closed ends.
The shell can include the shell, locate the water collecting cover of shell port and locate the connecting pipe of water collecting cover central through-hole, the aforesaid shell bottom forms the dense water export, the aforesaid connecting pipe outer end forms the water inlet, the one end sealing connection of inner end and center tube, has the clean water export between aforesaid water collecting cover and the connecting pipe, this clean water export is arranged around the water inlet.
A baffle portion may be provided in the center tube or the center tube may be axially penetrated.
Further, the shell comprises a base and an outer cover arranged on the base, the base is hollow in the axial direction, the open end of the hollow fiber membrane is positioned in the base, one end of the opening of the outer cover is fixedly connected with the base, and the bottom of the outer cover forms the concentrated water outlet.
Further, a separation flow guide net is arranged between the hollow fiber membranes.
The present invention solves the second and third technical problems described above by adopting one of the following technical schemes:
the first, a method for manufacturing a hollow fiber membrane element, is characterized by comprising the following steps:
(1) firstly, orderly arranging a plurality of hollow fiber membrane filaments with a certain length to the required width of a membrane element according to a certain distance, then respectively coating adhesive on two ends of the hollow fiber membrane filaments, and fixedly connecting the two ends of the hollow fiber membrane filaments; blocking a central hole at one end of the hollow fiber membrane wire by using an adhesive to form a closed end, and forming an open end at the central hole at the other end to prepare a hollow fiber membrane;
(2) smearing an adhesive on the central tube, taking the central axis of the central tube as a central axis, and keeping the hollow fiber membrane tensioned by a certain tension in a mode that 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, so that the hollow fiber membrane is neatly wound on the central tube;
(3) sealing the adhesive tape on the open end of the hollow fiber membrane to obtain a membrane assembly;
(4) placing the base into a packaging jig, placing the open end of the membrane assembly into the base, adding an adhesive to fill gaps between the hollow fiber membranes and the base, removing the packaging jig after curing, and removing the adhesive tape to complete bonding, fixing and packaging;
(5) and (3) assembling an outer cover, assembling a water collecting cover on the base, and finally installing a connecting pipe to finish the manufacture of the membrane element.
The second, a method for manufacturing a hollow fiber membrane element, characterized by comprising the steps of:
(1) firstly, orderly arranging a plurality of hollow fiber membrane filaments with a certain length to the required width of a membrane element according to a certain distance, and then coating an adhesive on one end of the hollow fiber membrane filaments to fixedly connect one end of the hollow fiber membrane filaments and freely scatter the other end of the hollow fiber membrane filaments; blocking one end of the hollow fiber membrane wire by using an adhesive to form a closed end, and forming an open end by opening a central hole at the other end to prepare a hollow fiber membrane;
(2) smearing an adhesive on the central tube, taking the central axis of the central tube as a central axis, and keeping the hollow fiber membrane tensioned by a certain tension in a mode that 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, so that the hollow fiber membrane is neatly wound on the central tube;
(3) sealing the adhesive tape on the open end of the hollow fiber membrane to obtain a membrane assembly;
(4) placing the base into a packaging jig, placing the open end of the membrane assembly into the base, adding an adhesive to fill gaps between the hollow fiber membranes and the base, removing the packaging jig after curing, and removing the adhesive tape to complete bonding, fixing and packaging;
(5) and (3) assembling an outer cover, assembling a water collecting cover on the base, and finally installing a connecting pipe to finish the manufacture of the membrane element.
Preferably, the adhesive bonding width of the end coating of the hollow fiber membrane wire 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.
Further, a separation flow guide net is adhered to the middle part of the hollow fiber membrane before the hollow fiber membrane is wound around the central tube.
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 glue and a matched fixture are not required to be used for glue filling and packaging, so that the material cost and the manufacturing cost are reduced; the end face does not need to be cut, so that the utilization rate of the hollow fiber membrane is improved, the manufacturing procedure is reduced, and the equipment research and development and manufacturing production cost is greatly reduced; the end surfaces and the interiors of the hollow fiber membranes are arranged according to a certain sequence, the structural consistency of the membrane elements is controllable, and the gaps among the hollow fiber membranes at the fixed ends are 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 filtration performance of the membrane elements is also greatly improved;
the hollow fiber membrane of the membrane element has one semi-free end or free end, and can move within a certain range, so that pollutants are easier to remove, maintenance and cleaning frequency is reduced, and the service life of the membrane element is prolonged.
The method has the advantages that a large amount of resin glue is not needed for filling and sealing, the amount of the resin glue can be as low as 5g-10g, the quick-curing adhesive can be used, the defects of wire burning, curing overheat explosion, excessive deformation of parts, fixed glue layer air holes, climbing of the adhesive due to surface tension siphon and the like caused by releasing a large amount of heat during 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 membrane element manufacturing and the utilization rate of membrane wires can be greatly improved. The time-consuming waiting for the reaction curing of the pouring sealant to reach the physical and chemical properties (the prior method and process are generally more than 24 hours, and the end face can be cut or other procedures (such as air tightness detection)) are not needed, and the rapidly-cured adhesive can reach the physical hardness of the completely-cured adhesive in 2 hours or even shorter, so that the time is greatly shortened.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Fig. 2 is a cross-sectional view of example 1.
Fig. 3 is a cross-sectional view of the cross-section of fig. 1.
Fig. 4 is a schematic view of the integrated cover structure in embodiment 1.
Fig. 5 is a schematic structural diagram of the hollow fiber membrane in example 1.
Fig. 6 is a schematic structural view of the hollow fiber membrane in example 1 after winding.
Fig. 7 is a schematic diagram of the membrane module in embodiment 1 after being placed on a packaging jig.
Fig. 8 is a cross-sectional view of example 2.
Fig. 9 is a schematic structural view of a hollow fiber membrane in example 2.
Fig. 10 is a cross-sectional view of example 3.
Fig. 11 is a cross-sectional view of example 3.
Fig. 12 is a cross-sectional view of the center tube in example 4.
Fig. 13 is a cross-sectional view of the center tube in example 5.
Fig. 14 is a cross-sectional view of the center tube in example 6.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
In example 1, as shown in fig. 1 to 3, the hollow fiber membrane element in this example includes a housing 1, and a hollow fiber membrane 3 and a center tube 2 provided in the housing 1.
As shown in fig. 4, the casing 1 includes a casing, a water collecting cover 11 disposed at a port of the casing, and a connecting pipe 4 disposed at a central through hole of the water collecting cover 11, wherein a concentrated water outlet 1c is formed at the bottom of the casing, a water inlet 1a is formed at the outer end of the connecting pipe 4, the inner end of the connecting pipe is connected with one end of the central pipe 2 in a sealing manner through a sealing ring 41, a sealing ring 42 is also sleeved at the outer end of the connecting pipe 4, a purified water outlet 1b is disposed between the water collecting cover 11 and the connecting pipe 4, and the purified water outlet 1b is disposed around the 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, one end of the opening of the outer cover 12 is fixedly connected with the base 13, and a concentrated water outlet 1c is formed at the bottom. The central tube 2 in this embodiment is assembled by an upper tube 21 and a lower tube 22, and the upper tube 21 is provided with a partition plate portion 24 and a diversion hole 23 laterally. The bottom end of the lower pipe 22 is matched with the groove on the base 13.
The hollow fiber membrane 3 is a hollow fiber membrane 5 formed by arranging a plurality of hollow fiber membrane wires 51 in parallel and bonding two ends respectively, wherein one end central hole of the hollow fiber membrane 5 is closed to form a closed end, the other end central hole is opened to form an open end, the hollow fiber membrane 5 is wound around 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 comprises the following steps:
(1) firstly, arranging a plurality of hollow fiber membrane wires 51 with a certain length to the required width of a membrane element in order according to a certain distance, then respectively coating adhesive on two ends of the hollow fiber membrane wires 51, and respectively and fixedly connecting the two ends of the hollow fiber membrane wires 51 to form an adhesive section 52, as shown in fig. 5; blocking a central hole at one end of the hollow fiber membrane wires 51 by using an adhesive to form a closed end, and forming an open end at the central hole at the other end to prepare a hollow fiber membrane 5; the bonding width of the adhesive coated on the end part of the hollow fiber membrane wires 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;
(2) the method comprises the steps of (1) coating an adhesive on a central tube 2, taking the central axis of the central tube 2 as a central axis of a hollow fiber membrane 5, and keeping the hollow fiber membrane 5 in tension by a certain tension in a mode that 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, so that the hollow fiber membrane 5 is neatly wound on the central tube 2;
(3) sealing the tape 6 to the open end of the hollow fiber membrane to obtain a membrane assembly, as shown in fig. 6;
(4) placing the base 13 into the packaging jig 10, placing the open end of the membrane module into the base 13, adding an adhesive to fill gaps between the hollow fiber membranes 5 and the base 13, removing the packaging jig 10 after curing, and removing the adhesive tape 6 to complete bonding, fixing and packaging as shown in fig. 7;
(5) and (3) assembling the upper 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.
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 formed by arranging a plurality of hollow fiber membrane filaments 51 in parallel and bonding one end, the other end is a free end, the central hole of the bonded end of the hollow fiber membrane sheet 5 is opened to form an open end, and the central hole of the free end of the other end is closed to form a closed end. Other structures refer to embodiment 1.
The method for manufacturing the hollow fiber membrane element in the embodiment comprises the following steps:
(1) firstly, arranging a plurality of hollow fiber membrane wires 51 with a certain length to the required width of a membrane element in order according to a certain distance, then coating an adhesive on one end of the hollow fiber membrane wires 51, and fixedly connecting one end of the hollow fiber membrane wires 51 to form an adhesive section 52, wherein the other end is free to scatter as shown in fig. 9; blocking one end of the hollow fiber membrane wires 51 by using an adhesive to form a closed end, and forming an open end by opening a central hole at the other end to prepare a hollow fiber membrane 5; the bonding width of the adhesive coated on the end part of the hollow fiber membrane wires 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;
(2) the method comprises the steps of (1) coating an adhesive on a central tube 2, taking the central axis of the central tube 2 as a central axis of a hollow fiber membrane 5, and keeping the hollow fiber membrane 5 in tension by a certain tension in a mode that 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, so that the hollow fiber membrane 5 is neatly wound on the central tube 2;
(3) sealing the open end of the hollow fiber membrane by using an adhesive tape 6 to obtain a membrane assembly;
(4) placing the base 13 into the packaging jig 10, placing the open end of the membrane assembly into the base 13, adding an adhesive to fill gaps between the hollow fiber membranes 5 and the base 13, removing the packaging jig 10 after curing, and removing the adhesive tape 6 to complete bonding, fixing and packaging;
(5) and (3) assembling the upper 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.
The adhesive involved in this example is a fast curing agent.
In embodiment 3, as shown in fig. 10 and 11, a partition guide net 7 is provided between hollow fiber membranes 5 in this embodiment. The manufacturing method comprises the following steps: before the hollow fiber membrane 5 is wound around the central tube 2, a separation flow guide net 7 is adhered to the middle part of the hollow fiber membrane 5. The partition flow guide net 7 in this embodiment may be a nonwoven fabric, or a mesh layer may be used. Other structures refer to embodiment 1.
In embodiment 4, as shown in fig. 12, the central tube 2 in this embodiment is an integral piece penetrating in the axial direction, and the side wall is provided with a deflector hole 23 along the longitudinal direction. Other structures refer to embodiment 1.
In embodiment 5, as shown in fig. 13, the central tube 2 is an integral part and has a partition plate 24 in the middle, and the deflector hole 23 is opened on the side wall above the partition plate 24, and the other structure is referred to in embodiment 1.
In example 6, as shown in fig. 14, the central tube 2 in this example is an integral piece and is sealed at the bottom, and the side wall near the bottom is provided with a diversion hole 23. Other structures refer to embodiment 1.
Claims (9)
1. The manufacturing approach of a hollow fiber membrane component, characterized by that this hollow fiber membrane component includes the body (1), locate hollow fiber membrane (3) and central tube (2) in body (1), the aforesaid body (1) has water inlets (1 a), purified water outlets (1 b) and dense water outlets (1 c), the aforesaid hollow fiber membrane (3) is by the hollow fiber membrane (5) that a plurality of hollow fiber membrane silk (51) are arranged in parallel and at least one end is bonded, one end centre bore of this hollow fiber membrane (5) is closed to form the closed end, another end centre bore opening forms the open end, the said hollow fiber membrane (5) is coiled around central tube (2) with central tube (2) as the central axis, the closed end (31) and open end (32) of the aforesaid hollow fiber membrane (3) are located the both ends in the length direction of the central tube (2) separately, the aforesaid central tube (2) is opened at least one end and laterally has diversion holes (23);
the shell (1) comprises a shell, a water collecting cover (11) arranged at a port of the shell and a connecting pipe (4) arranged at a central through hole of the water collecting cover (11), wherein a concentrated water outlet (1 c) is formed at the bottom of the shell, a water inlet (1 a) 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 the central pipe (2), a purified water outlet (1 b) is arranged between the water collecting cover (11) and the connecting pipe (4), and the purified water outlet (1 b) is arranged around the 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), one end of the opening of the outer cover (12) is fixedly connected with the base (13), 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 wires (51) with a certain length to the required width of a membrane element according to a certain distance, then respectively coating adhesive on two ends of the hollow fiber membrane wires (51), and fixedly connecting the two ends of the hollow fiber membrane wires (51); blocking a central hole at one end of a hollow fiber membrane wire (51) by using an adhesive to form a closed end, and forming an open end by opening the central hole at the other end to prepare a hollow fiber membrane (5);
the method comprises the steps of (1) smearing an adhesive on a central tube (2), taking the central axis of the central tube (2) as a central axis of a hollow fiber membrane (5), and enabling the closed end and the open end of the hollow fiber membrane (5) to be respectively positioned at two ends of the central tube (2) in the length direction, keeping the hollow fiber membrane (5) in tension by a certain tension, and orderly winding the hollow fiber membrane (5) on the central tube (2);
sealing the open end of the hollow fiber membrane by using an adhesive tape (6) to obtain a membrane assembly;
placing the base (13) into the packaging jig (10), placing the open end of the membrane module into the base (13), adding adhesive to fill the space between the hollow fiber membranes (5), and the hollow fiber membranesThe gap between the sheet (5) and the base (13) is cured, the packaging jig (10) is removed, and then the adhesive tape (6) is removed, so that the bonding, fixing and packaging are completed;
and (3) assembling an upper outer cover (12), assembling a water collecting cover (11) on the base (13), and finally assembling a connecting pipe (4) to finish the membrane element manufacture.
2. The method according to claim 1, wherein the hollow fiber membrane (3) is a hollow fiber membrane sheet (5) formed by arranging a plurality of hollow fiber membrane filaments (51) in parallel and bonding both ends thereof.
3. The manufacturing method according to claim 1, wherein the hollow fiber membrane (3) is a hollow fiber membrane sheet (5) formed by arranging a plurality of hollow fiber membrane wires (51) in parallel and bonding one end, the other end is a free end, the central hole of the bonded end of the hollow fiber membrane sheet (5) is opened to form an open end, and the central hole of the other end is closed to form a closed end.
4. The manufacturing method according to claim 1, characterized in that a partition plate part is provided in the center tube (2) or the center tube (2) is penetrated axially.
5. A method according to claim 1, 2 or 3, characterized in that a separating and guiding net (7) is arranged between the hollow fiber membranes (5).
6. The manufacturing approach of a hollow fiber membrane component, characterized by that this hollow fiber membrane component includes the body (1), locate hollow fiber membrane (3) and central tube (2) in body (1), the aforesaid body (1) has water inlets (1 a), purified water outlets (1 b) and dense water outlets (1 c), the aforesaid hollow fiber membrane (3) is by the hollow fiber membrane (5) that a plurality of hollow fiber membrane silk (51) are arranged in parallel and at least one end is bonded, one end centre bore of this hollow fiber membrane (5) is closed to form the closed end, another end centre bore opening forms the open end, the said hollow fiber membrane (5) is coiled around central tube (2) with central tube (2) as the central axis, the closed end (31) and open end (32) of the aforesaid hollow fiber membrane (3) are located the both ends in the length direction of the central tube (2) separately, the aforesaid central tube (2) is opened at least one end and laterally has diversion holes (23);
the shell (1) comprises a shell, a water collecting cover (11) arranged at a port of the shell and a connecting pipe (4) arranged at a central through hole of the water collecting cover (11), wherein a concentrated water outlet (1 c) is formed at the bottom of the shell, a water inlet (1 a) 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 the central pipe (2), a purified water outlet (1 b) is arranged between the water collecting cover (11) and the connecting pipe (4), and the purified water outlet (1 b) is arranged around the 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), one end of the opening of the outer cover (12) is fixedly connected with the base (13), and the bottom of the outer cover forms the concentrated water outlet (1 c);
the method comprises the following steps:
firstly, arranging a plurality of hollow fiber membrane wires (51) with a certain length to the required width of a membrane element in order according to a certain distance, and then coating an adhesive on one end of the hollow fiber membrane wires (51) to fixedly connect one end of the hollow fiber membrane wires (51) and freely scatter the other end of the hollow fiber membrane wires; blocking one end of the hollow fiber membrane wire (51) by using an adhesive to form a closed end, and forming an open end by opening a central hole at the other end to prepare a hollow fiber membrane (5);
the adhesive is smeared on the central tube (2), 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 the two ends of the central tube (2) in the length direction, and the hollow fiber membrane (5) is kept to be tensioned by a certain tensionThe hollow fiber membrane (5) is neatly wound on the central tube (2);
sealing the open end of the hollow fiber membrane by using an adhesive tape (6) to obtain a membrane assembly;
placing the base (13) into the packaging jig (10), placing the open end of the membrane assembly into the base (13), adding an adhesive to fill gaps between the hollow fiber membranes (5) and the base (13), removing the packaging jig (10) after curing, and removing the adhesive tape (6) to finish bonding, fixing and packaging;
and (3) assembling an upper outer cover (12), assembling a water collecting cover (11) on the base (13), and finally assembling a connecting pipe (4) to finish the membrane element manufacture.
7. The method according to claim 1 or 6, wherein the adhesive applied to the ends of the hollow fiber membrane filaments (51) has a bonding width of 10mm to 30mm, and the thickness of the adhesive layer is 0.5mm or more larger than the diameter of the hollow fiber membrane.
8. The manufacturing method according to claim 1 or 6, characterized in that a separation flow guide net (7) is adhered to the middle part of the hollow fiber membrane (5) before the hollow fiber membrane (5) is wound around the central tube (2).
9. The method of claim 1 or 6, wherein the adhesive is a rapid curing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011189362.1A CN112546874B (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 |
|---|---|---|---|
| CN202011189362.1A CN112546874B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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| Publication Number | Publication Date |
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| CN112546874A CN112546874A (en) | 2021-03-26 |
| CN112546874B true CN112546874B (en) | 2024-04-16 |
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| CN115010211B (en) * | 2022-02-09 | 2023-10-17 | 甘肃农业大学 | Drinking water purifying mechanism and rural drinking water machine |
Citations (10)
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