CN112516801A - 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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- CN112516801A CN112516801A CN202011189347.7A CN202011189347A CN112516801A CN 112516801 A CN112516801 A CN 112516801A CN 202011189347 A CN202011189347 A CN 202011189347A CN 112516801 A CN112516801 A CN 112516801A
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- fiber membrane
- hollow fiber
- adhesive
- membrane
- membrane element
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- 239000012528 membrane Substances 0.000 title claims abstract description 240
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 177
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000000853 adhesive Substances 0.000 claims abstract description 40
- 230000001070 adhesive effect Effects 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 9
- 238000000746 purification Methods 0.000 claims abstract description 8
- 238000004806 packaging method and process Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000002390 adhesive tape Substances 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 239000008213 purified water Substances 0.000 claims description 4
- 239000004831 Hot glue Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 239000004819 Drying adhesive Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
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Classifications
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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
-
- 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
-
- 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
- B01D63/024—Hollow fibre modules with a single potted end
-
- 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
- B01D63/025—Bobbin units
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (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 and water purification export, its characterized in that hollow fiber membrane be by many hollow fiber membrane silk parallel arrangement back and the hollow fiber membrane that at least one end bonded formed, the one end centre bore of this hollow fiber membrane seals and forms the blind end, other end centre bore opening forms the opening end and is close to the water purification export setting, the axis that hollow fiber membrane used the center tube is the center pin winding on the center tube, runs through being provided with air-permeable fiber membrane in this center tube. The invention also discloses a manufacturing method of the hollow fiber membrane element. The center of the membrane element is provided with the breathable fiber membrane, so that gas in the membrane element and gas attached in water in the using process cannot be accumulated in an inner cavity of the membrane element, the water filling amount and the effective filtering area of the hollow fiber membrane are influenced, and the manufacturing method is favorable for reducing the loss of the adhesive.
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 hollow fiber membrane element manufacture process is artificial manufacturing at present on the domestic market, degree of automation is low, the manufacture process design is unreasonable, lead to membrane element structure uniformity poor, the encapsulation terminal surface arranges in a jumble, the part is intensive, and because adopt the full filterable mode of dead end, the initial air that can't make the inside of membrane element is got rid of through the filter membrane completely, add the continuous accumulation of water-soluble and contained gas, make the effective water charge volume of the inside cavity of membrane element reduce, lead to the unable water that contacts of the unable messenger's membrane element inside part hollow membrane fibre that can't be full of, lead to the effective utilization rate of the inside hollow membrane fibre of membrane element to hang down.
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 compactly when using, and the unable abundant contact water of inside part hollow fiber membrane 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 that can exhaust air to the maximum extent and has a high utilization rate of hollow fiber.
A second technical problem to be solved by the present invention is to provide a method for manufacturing a hollow fiber membrane element, which can exhaust air completely and has a high utilization rate of hollow fiber.
The third technical problem to be solved by the present invention is to provide a method for producing a hollow fiber membrane element with low adhesive loss, in view of the above-mentioned technical state.
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 be by many hollow fiber membrane silk parallel arrangement back and the hollow fiber membrane that at least one end bonded formed, the one end centre bore of this hollow fiber membrane seals and forms the blind end, other end centre bore opening forms the opening end and is close to the water purification export setting, the axis that hollow fiber membrane used the center tube is the center pin winding on the center tube, runs through being provided with air-permeable fiber membrane in this center tube.
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.
Preferably, the housing includes a housing, a base, and a water collecting cover disposed on the base, the side wall of the housing has the water inlet, an open end of the housing is fixedly connected to the base, the base is axially hollow, an open end of the hollow fiber membrane is positioned in the base, and the water collecting cover has the purified water outlet axially.
Furthermore, a supporting and dividing net is arranged in the hollow fiber membrane. The supporting and dividing net can ensure that the hollow fiber membranes have even intervals, the hollow fiber membranes in the hollow fiber membranes are fully contacted with water, the performance of the membrane element is improved, and the service life of the hollow fiber membrane element is greatly prolonged finally.
The technical solution adopted by the present invention to solve the first technical problem and the second technical problem is:
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 coating an adhesive on two ends of each hollow fiber membrane filament, and respectively fixedly connecting two ends of each hollow fiber membrane filament;
secondly, 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;
thirdly, coating an adhesive with equal width on the side surface of the hollow fiber membrane, keeping the hollow fiber membrane tensioned by taking a central tube with a breathable fiber membrane arranged inside the hollow fiber membrane as a central shaft with certain tension, and regularly winding the hollow fiber membrane on the central tube to fix the hollow fiber membrane on the central tube;
fourthly, the open end of the hollow fiber membrane is stuck by an adhesive tape to obtain a membrane component;
fifthly, putting the base into a packaging jig, putting the open end of the membrane component into the base, heating to melt and bond the adhesive to fill the gap, taking out the membrane component, cooling, removing the packaging jig, removing the adhesive tape, and completing bonding, fixing and packaging;
sixthly, assembling the shell, and assembling the water collecting cover at the upper end of the shell to finish the manufacture of the membrane element.
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;
secondly, sealing 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;
thirdly, coating an adhesive with equal width on the side surface of the hollow fiber membrane, keeping the hollow fiber membrane tensioned by taking a central tube with a breathable fiber membrane arranged inside the hollow fiber membrane as a central shaft with certain tension, and regularly winding the hollow fiber membrane on the central tube to fix the hollow fiber membrane on the central tube;
fourthly, the open end of the hollow fiber membrane is stuck by an adhesive tape to obtain a membrane component;
fifthly, putting the base into a packaging jig, putting the open end of the membrane component into the base, heating to melt and bond the adhesive to fill the gap, taking out the membrane component, cooling, removing the packaging jig, removing the adhesive tape, and completing bonding, fixing and packaging;
sixthly, assembling the shell, and assembling the water collecting cover at the upper end of the shell to finish the manufacture of the membrane element.
Furthermore, a supporting and cutting net is glued in the middle before the hollow fiber membrane is wound in the step III.
Preferably, the hollow fiber membrane filaments in the step (i) satisfy the following conditions when they are adhesively fixed: the width of the coated adhesive is 25 mm-40 mm, and the thickness of the coated adhesive is more than 0.5mm larger than the diameter of the hollow fiber membrane.
Preferably, the heating conditions in step (c) are as follows: the heating temperature is 50-75 ℃, and the heating time is 10-30 minutes.
The above-mentioned adhesive can be hot melt adhesive, and can also be polyurethane resin or epoxy resin.
Compared with the prior art, the invention has the advantages that: because the hollow fiber membranes are arranged according to a certain distance and fixed by using a certain amount of adhesive to form a sheet-shaped object with a certain thickness, the hollow fiber membranes in the membrane element can not be gathered due to the action of internal pressure when in use, so that water can not contact all the hollow membrane fibers. The center of the membrane element is provided with the breathable fiber membrane, so that gas in the membrane element and gas attached in water in the using process cannot be accumulated in an inner cavity of the membrane element, and the water filling amount and the effective filtering area of the hollow fiber membrane are influenced. The adhesive is heated to further bond the adhesive, so that the possibility of air hole leakage points of the membrane element is greatly reduced, time consumption and equipment for a process of cutting the end of the membrane element are reduced, and the using amount of the pouring adhesive is also greatly reduced. The membrane element structure is suitable for various hollow fiber membrane elements, in particular to the membrane elements for dead-end full-flow filtration, such as hollow fiber ultrafiltration membrane elements, hollow fiber microfiltration membrane elements and the like.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a schematic cross-sectional view of fig. 1.
Fig. 4 is a development view of the hollow fiber membrane in example 1.
FIG. 5 is a state diagram of the manufacturing method of example 1 at step (iv).
FIG. 6 is a state diagram of the fifth step of the manufacturing method of example 1.
FIG. 7 is a sectional view of embodiment 2.
Fig. 8 is a development view of a hollow fiber membrane in example 2.
FIG. 9 is a sectional view of embodiment 3.
FIG. 10 is a schematic cross-sectional view of example 3.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1, as shown in fig. 1, 2, and 3, the hollow fiber membrane element in this example includes a housing and hollow fiber membranes 5 provided in the housing, and the hollow fiber membranes 5 are provided in the housing through an adhesive layer 7. Specifically, the casing includes shell 1, base 6 and locates the lid 2 that catchments on the base 6, and 1 lateral wall of shell has water inlet 11, and 1 open-ended one end of shell is connected fixedly with base 6, and base 13 axial cavity, the open end 53 of hollow fiber diaphragm are located base 13, and the lid 2 axial that catchments has water purification export 21, and the lid 2 that catchments is equipped with sealing washer 22 in water purification export periphery cover. The hollow fiber membrane 5 is a hollow fiber membrane formed by bonding two ends of a plurality of hollow fiber membrane wires 51 after being arranged in parallel, one end of the hollow fiber membrane is closed to form a closed end, the other end of the hollow fiber membrane is opened to form an open end and is arranged close to the purified water outlet 21, the hollow fiber membrane is wound on the central tube 3 by taking the central axis of the central tube 3 as the central axis, and the central tube 3 is internally provided with the air-permeable fiber membrane 4 in a penetrating way.
The method for manufacturing the hollow fiber membrane element in the embodiment includes the following steps:
firstly, a plurality of hollow fiber membrane filaments 51 with a certain length are orderly arranged to the width required by the membrane element according to a certain distance, then an adhesive is coated on two ends of the hollow fiber membrane filaments 51, and the two ends of the hollow fiber membrane filaments 51 are respectively and fixedly connected to form an adhesive end 52, as shown in fig. 4. When the hollow fiber membrane yarn 51 is bonded and fixed, the following conditions are satisfied: the width of the coated adhesive is 25 mm-40 mm, and the thickness is more than 0.5mm larger than the diameter of the hollow fiber membrane 5.
Secondly, 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;
thirdly, coating an adhesive with equal width on the side surface of the hollow fiber membrane, keeping the hollow fiber membrane tensioned by taking a central tube 3 with a breathable fiber membrane 4 arranged inside the hollow fiber membrane as a central shaft at a certain tension, and winding the hollow fiber membrane on the central tube 3 in order to fix the hollow fiber membrane on the central tube 3;
fourthly, the open end of the hollow fiber membrane is stuck by an adhesive tape 8 to obtain a membrane component, as shown in figure 5;
fifthly, placing the packaging base 10 into a packaging jig, placing the open end of the membrane component into the packaging base 10, and heating, as shown in fig. 6, the heating conditions are as follows: heating at 50-75 ℃ for 10-30 minutes to melt and bond the adhesive to fill the gap, taking out and cooling, removing the packaging base 10, and removing the adhesive tape 8 to complete bonding, fixing and packaging;
sixthly, assembling the shell 1, and assembling the water collecting cover 2 at the upper end of the shell 1 to finish the manufacture of the membrane element.
The adhesive in this embodiment may be a hot melt adhesive, or may also be polyurethane resin or epoxy resin.
In example 2, as shown in fig. 7, the hollow fiber membrane 5 in this example is a hollow fiber membrane sheet in which a plurality of hollow fiber membrane filaments 51 are arranged in parallel and one end is bonded, the bonded end of the hollow fiber membrane sheet forms an open end and is disposed near the purified water outlet 21, the other end is sealed to form a free closed end, the hollow fiber membrane sheet is wound around the central tube 3 with the central axis of the central tube 3 as the central axis, and the air-permeable fiber membrane 4 is disposed through the central tube 3. A supporting and dividing net 9 is arranged in the hollow fiber membrane. Other structures refer to example 1.
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 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 end 52, and freely dispersing the other end, as shown in fig. 8;
secondly, plugging 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;
thirdly, coating an adhesive with equal width on the side surface of the hollow fiber membrane, keeping the hollow fiber membrane tensioned by taking a central tube 3 with a breathable fiber membrane 4 arranged inside the hollow fiber membrane as a central shaft at a certain tension, and winding the hollow fiber membrane on the central tube 3 in order to fix the hollow fiber membrane on the central tube 3;
fourthly, the open end of the hollow fiber membrane is stuck by an adhesive tape 8 to obtain a membrane component;
fifthly, placing the packaging base 10 into a packaging jig, placing the open end of the membrane component into the packaging base 10, heating to melt and bond the adhesive to fill the gap, taking out the membrane component, cooling, removing the packaging base 10, removing the adhesive tape 8, and completing bonding, fixing and packaging;
sixthly, assembling the shell 1, and assembling the water collecting cover 2 at the upper end of the shell 1 to finish the manufacture of the membrane element.
Example 3 as shown in fig. 9 and 10, a supporting partition net 9 is provided in the hollow fiber membrane in this example. Before the hollow fiber membrane is wound on the central tube 3, a supporting and dividing net 9 is bonded in the middle of the hollow fiber membrane. The supporting and dividing net 9 in this embodiment may be a nonwoven fabric, or may be a mesh layer. Other structures refer to example 1.
Claims (11)
1. The utility model provides a hollow fiber membrane element, includes the casing and locates hollow fiber membrane (5) and center tube (3) in the casing, aforementioned casing has water inlet (11) and water purification export (21), its characterized in that hollow fiber membrane (5) be by many hollow fiber membrane silk (51) parallel arrangement back and the hollow fiber membrane that at least one end bonded and formed, the one end centre bore of this hollow fiber membrane seals and forms blind end (54), other end centre bore opening forms uncovered (53) end and is close to water purification export (21) and sets up, the hollow fiber membrane uses the axis of center tube (3) to coil on center tube (3) as the center pin, runs through being provided with ventilative fiber membrane (4) in this center tube (3).
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 of claim 1, 2 or 3, wherein the housing comprises a housing (1), a base (6) and a water collecting cover (2) disposed on the base (6), the side wall of the housing (1) has the water inlet (11), the open end of the housing (1) is fixedly connected to the base (6), the base (13) is axially hollow, the open end (53) of the hollow fiber membrane is positioned in the base (13), and the water collecting cover (2) has the purified water outlet (21) axially.
5. The hollow fiber membrane element according to claim 1, 2 or 3, characterized in that a support partition net (9) is provided in the hollow fiber membrane sheet.
6. A method of manufacturing a hollow fiber membrane element according to claim 4, 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 coating an adhesive on two ends of the hollow fiber membrane filaments (51), and respectively fixedly connecting two ends of the hollow fiber membrane filaments (51);
secondly, plugging a center hole at one end of the hollow fiber membrane wire (51) by using an adhesive to form a closed end, and opening a center hole at the other end to form an open end to prepare a hollow fiber membrane;
thirdly, coating an adhesive with equal width on the side surface of the hollow fiber membrane, keeping the hollow fiber membrane tensioned by taking a central pipe (3) with a breathable fiber membrane (4) arranged inside the hollow fiber membrane as a central shaft with certain tension, and winding the hollow fiber membrane on the central pipe (3) in order to fix the hollow fiber membrane on the central pipe (3);
fourthly, the open end of the hollow fiber membrane is stuck by an adhesive tape (8) to obtain a membrane component;
fifthly, placing the base (6) into a packaging jig (10), placing the open end of the membrane component into the base (6) for heating to melt and bond the adhesive to fill the gap, taking out and cooling, removing the packaging jig (10), and removing the adhesive tape (8) to complete bonding, fixing and packaging;
sixthly, assembling the shell (1), and assembling the water collecting cover (2) at the upper end of the shell (1) to finish the manufacture of the membrane element.
7. A method of manufacturing a hollow fiber membrane element according to claim 4, 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;
secondly, sealing 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;
thirdly, coating an adhesive with equal width on the side surface of the hollow fiber membrane, keeping the hollow fiber membrane tensioned by taking a central pipe (3) with a breathable fiber membrane (4) arranged inside the hollow fiber membrane as a central shaft with certain tension, and winding the hollow fiber membrane on the central pipe (3) in order to fix the hollow fiber membrane on the central pipe (3);
fourthly, the open end of the hollow fiber membrane is stuck by an adhesive tape (8) to obtain a membrane component;
fifthly, placing the base (6) into a packaging jig (10), placing the open end of the membrane component into the base (6) for heating to melt and bond the adhesive to fill the gap, taking out and cooling, removing the packaging jig (10), and removing the adhesive tape (8) to complete bonding, fixing and packaging;
sixthly, assembling the shell (1), and assembling the water collecting cover (2) at the upper end of the shell (1) to finish the manufacture of the membrane element.
8. The manufacturing method according to claim 6 or 7, characterized in that a supporting and dividing net (9) is glued to the middle part of the hollow fiber membrane before winding in the third step.
9. The production method according to claim 6 or 7, wherein the following condition is satisfied when the hollow fiber membrane filaments (51) are bonded and fixed in step (i): the width of the coated adhesive is 25 mm-40 mm, and the thickness is more than 0.5mm larger than the diameter of the hollow fiber membrane (5).
10. The method according to claim 6 or 7, wherein the heating conditions in the fifth step are as follows: the heating temperature is 50-75 ℃, and the heating time is 10-30 minutes.
11. The method according to claim 6 or 7, wherein the adhesive is a quick-drying adhesive or a hot-melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011189347.7A CN112516801B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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|---|---|---|---|
| CN202011189347.7A CN112516801B (en) | 2020-10-30 | 2020-10-30 | Method for manufacturing hollow fiber membrane element |
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| CN112516801A true CN112516801A (en) | 2021-03-19 |
| CN112516801B CN112516801B (en) | 2024-04-12 |
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| JP5999262B2 (en) * | 2014-04-03 | 2016-09-28 | 三菱レイヨン株式会社 | Hollow fiber membrane sheet laminate, method for producing hollow fiber membrane sheet laminate, hollow fiber membrane module, and method for producing hollow fiber membrane module |
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