CN206143358U - Hollow fiber complex film shower nozzle - Google Patents
Hollow fiber complex film shower nozzle Download PDFInfo
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- CN206143358U CN206143358U CN201621144595.9U CN201621144595U CN206143358U CN 206143358 U CN206143358 U CN 206143358U CN 201621144595 U CN201621144595 U CN 201621144595U CN 206143358 U CN206143358 U CN 206143358U
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- shower nozzle
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- liquid
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Abstract
Hollow fiber complex film shower nozzle, the shower nozzle includes a showerhead body who takes solution channel, sets up passageway I, passageway II, central liquid pipe, collector tube and spinning shaping district in it, and the terminal of I sum channel II in the passageway all is connected with the collector tube, and central liquid is managed and is set up in showerhead body centrally, and its the latter half is passed the collector tube and is extended to the spinning shaping and distinguishes. Utilize the utility model discloses a during shower nozzle preparation hollow fiber membrane, it is better that the dope joins, avoids the lamination of membrane silk, combine closely between hollow fiber membrane separating layer and the supporting layer, and the nondisjunction, not layering has better selection permeability.
Description
Technical field
This utility model is related to a kind of shower nozzle for preparing hollow fiber composite membrane, belongs to doughnut field of membrane preparation.
Background technology
Hollow-fibre membrane is one kind of anisotropic membrane, big with unit volume loading density, pressure with self-supporting effect
Performance is high, and life-span length, the equipment investment expense of film device is low, the advantages of miniaturized structure is simplified, therefore high-performance (Thief zone is logical
Amount P, high selectivity α) preparation of hollow fiber composite membrane is always one of emphasis of membrane technology development.For polymeric film material
For, generally there is trade-off relations between its permeation flux and selectivity, permeation flux is high, and selectivity is just low, otherwise also
So.The performance of hollow-fibre membrane is removed to be had outside the Pass with raw material etc., also closely related with the material of spinning head, structure, the accuracy of manufacture.
Used as the core component spinning head of Ho llow fiber membrane for gas separation, it directly affects production process, product quality, the former material of spinning
Material consumption and the labor intensity of workman, therefore, generally there is certain particular/special requirement to spinning head.If spinning head structure design
Unreasonable, silk liquid easily occurs the situation of unbalance stress in shower nozzle internal flow, makes a liquid in Turbulent Flow, causes in spinning out
Hollow fiber membranous wall thickness ununiformity, occur hole it is eccentric the problems such as.
The core component of spinning hollow-fibre membrane is hollow spinning head, and shower nozzle mainly has two classes, and a class is equipped with needle tubing
Looping pit shower nozzle, the film supporting layer of preparation is identical with separation layer materials, and this shower nozzle is widely used in ultrafilter membrane and micro-filtration membrane
Preparation.Another kind of is Crossed Circle hole spinning head, there is inside and outside bilayer looping pit, and respectively in porch, injection is polymerized by variety classes
The spinning liquid of thing composition, supporting layer and stratum disjunctum can adopt different membrane materials, the film for preparing by this method mainly to use
Separate in gas.Two kinds of spinning liquid carry out solvent exchange from spinneret exits with core liquid simultaneously, after coagulation bath, make by
The composite hollow fiber membrane of stratum disjunctum and supporting layer composition.Using this spinning head during spinning composite hollow fiber membrane
It is easy to the problem that stratum disjunctum and supporting layer depart from occur.
Composite membrane be by interfacial polymerization in the functional layer of support membrane surface recombination one, the performance of composite membrane not only with functional layer
Property it is closely related, be also supported the impact of aperture, pore size distribution and the hole density of layer.Prepare the side of hollow fiber composite membrane
Method is usually first to make doughnut basement membrane, and the stratum disjunctum of layer is then applied on basement membrane, is generally separated layer and supports
The material of tunic is different.With film made by the membrane material with larger flux, but intensity is often relatively low, it is difficult in being individually spun into
Hollow fiber film, can be using it as basic unit's supporting layer, and higher with another intensity, the higher polymer of separation value is used as separation
Layer, and using the excellent hollow fiber film thread of suitable shower nozzle processability.
The content of the invention
Hollow fiber composite membrane shower nozzle of the present utility model makes the two kinds of polymer solution for preparing fibrous membrane carry out solvent
Converge before exchange, Jing shower nozzles are once spun into composite hollow fiber membrane, its stratum disjunctum is not easily disconnected from supporting layer, it is ensured that produce
Quality simultaneously improves production efficiency.
To realize above technical purpose, this utility model provides a kind of hollow fiber composite membrane shower nozzle, including a band
Passage I, passage II, center liquid pipe, collector tube and spinning moulding area, institute are set in the sprayer body of solution channel, the shower nozzle body
Passage I is stated for " L " type, 2N is provided with, N >=1, the entrance of passage I is symmetrically distributed on the upper surface of sprayer body, its end with
The collector tube upper end for being arranged at sprayer body lower half center communicates；The entrance of the passage II is arranged on the side wall of sprayer body,
Extend horizontally to liquid collecting tube side wall and communicate therewith；The center liquid pipe is the hollow liquid pipe for being arranged at sprayer body center, under it
Half part is through collector tube and extends to spinning moulding area；The collector tube is arranged at the center of sprayer body, and its upper end starts from logical
The outlet in road I, lower end terminates in spinning moulding area；The spinning moulding area is arranged at center liquid pipe lower section, and on its side wall one is provided with
Individual through hole, the through hole is arranged at 30～60 degree in the polarization of side of position.
Compared with prior art, this utility model has the advantage that：
It is viscoelastic fluid to prepare the spinning liquid that hollow-fibre membrane uses, and is sent out while spinning head aperture does VISCOUS FLOW
Raw elastic deformation, and the presence of elastic deformation, are one of unstable key factors of spinning；Reduce elastic deformation mainly to pass through
Reduce flowing velocity and raising spinning temperature of the spinning liquid in spinning head, so as to reducing the viscosity of spinning liquid, reducing
The purpose of elastic deformation；But spinning speed is too low to cause production efficiency too low, and improve spinning temperature, although bullet can be reduced
Property deformation, but with the rising of temperature, the film silk tensile strength produced substantially is reduced；The integration of this utility model shower nozzle sets
Meter can make two kinds of polymer solution respectively by passage I and the injection of passage II, first before the core liquid contact in the liquid pipe of Bing Yu centers
Converge, that is, increased the length of spinning liquid material guide hole, can make that spinning liquid converges is more preferable, so as to the layering for avoiding film silk shows
As；Spinning liquid carries out with core liquid again solvent exchange at shower nozzle, and can once spin molding, the Middle hollow fiber membrane layer of preparation
It is not easily disconnected from supporting layer, with preferable selective penetrated property, it is ensured that product quality simultaneously improves production efficiency.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Description of the drawings
Fig. 1 is the front view of the shower nozzle of embodiment 1；
Fig. 2 is the top view of the shower nozzle of embodiment 1；
Fig. 3 is the tangent plane schematic diagram in A-A directions in Fig. 2；
Fig. 4 is the tangent plane schematic diagram in B-B directions in Fig. 2；
Fig. 5 is the tangent plane schematic diagram in D-D directions in Fig. 4；
Wherein, 11. passage I, 12. passages II, 121. first liquid input sections, 122. solution relief areas, 123. second liquid input sections,
13. center liquid pipes；14. collector tubes, 2. spinning moulding area, 21. through holes.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It should be appreciated that described herein concrete
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
This utility model provides a kind of hollow fiber composite membrane shower nozzle, including a sprayer body with solution channel, described
Passage I, passage II, center liquid pipe, collector tube and spinning moulding area are set in shower nozzle body, and the passage I is " L " type, is provided with
2N, N >=1, the entrance of passage I is symmetrically distributed on the upper surface of sprayer body, its end be arranged in sprayer body lower half
The collector tube upper end of the heart communicates；The entrance of the passage II is arranged on the side wall of sprayer body, extends horizontally to liquid collecting tube side wall
And communicate therewith；The center liquid pipe is the hollow liquid pipe for being arranged at sprayer body center, and its latter half is through collector tube and prolongs
Extend spinning moulding area；The collector tube is arranged at the center of sprayer body, and its upper end starts from the outlet of passage I, and lower end terminates in spinning
Silk shaping area；The spinning moulding area is arranged at center liquid pipe lower section, and a through hole is provided with its side wall, and the through hole is arranged at
30～60 degree of position in the polarization of side.
Hollow fiber composite membrane shower nozzle described in the utility model, II point of the passage is three sections：First liquid input section, solution delay
Area and the second liquid input section are rushed, first liquid input section is a horizontal channel, and the solution relief area is with collector tube for one
Axle center, depth are more than the deep trouth shape annular region of the first liquid input section, and second liquid input section is connection solution relief area and liquid collecting
The passage of pipe, it is an annular region, or for 2N bars centered on collector tube axisymmetric passage, wherein N >=1..
Hollow fiber composite membrane shower nozzle described in the utility model, the depth of first liquid input section is 0.3～0.8mm, institute
The depth for stating solution relief area is 0.7～1.3mm, and the depth of second liquid input section is 0.3～0.8mm, the solution buffering
The depth in area is always greater than the first liquid input section and the depth of the second liquid input section, in the horizontal direction, the width of the solution relief area
Spend for 0.2～0.5mm, the length of second liquid input section (123) is 1.5～6mm.
Design based on more than, it will be apparent to a skilled person that in the preparation process of hollow-fibre membrane, due to
The feeding manner of spinning liquid and the time of staying in runner are to spinning liquid viscoelasticity and flow to the change of force direction and have very big
Affect, the solution relief area increased on passage of the present utility model II can increase spinning liquid stopping in runner as storage area
The time is stayed, changes spinning liquid viscoelasticity, so that the quality of film silk is more stable.
Hollow fiber composite membrane shower nozzle described in the utility model, the passage I is provided with 2N, N >=1, preferably 4,6 or
8.The porch of passage I arranges sealing ring sealing.Passage I it is symmetrical so that solution all directions when into collector tube
On be uniform, be conducive to it to mix homogeneously with solution in passage II.
Hollow fiber composite membrane shower nozzle described in the utility model, the center liquid pipe and shower nozzle body by integral forming, its lower end
For chamfering, showerhead is formed, its chamfering radian is 75～87 degree.The chamfering refers to center liquid pipe lower end termination face and horizontal plane
Angle.With the upper surface of sprayer body flush or above upper surface, wall thickness is 0.03～0.10mm to the entrance of center liquid pipe,
Its center bore is 0.05～0.15mm.The structure of integration makes center liquid pipe only can carry out chamfering in port, and tube wall
Thickness can keep larger, so as to ensure to be also ensure that while whole center liquid pipe intensity the precision in aperture and integrally formed
Design can make hollow-fibre membrane that bias is not produced under spinning pressure, it is to avoid the generation of film silk phenomenon in uneven thickness, it is ensured that
Precision and draw ratio, to film silk performance important function is served.
Hollow fiber composite membrane shower nozzle described in the utility model, the central liquid tube wall is to the distance of liquid collecting tube wall
0.2～0.5mm.
Hollow fiber composite membrane shower nozzle described in the utility model, the length of the collector tube is 6～15mm, the passage II
It is 2～8mm with the through part of collector tube and the distance of collector tube bottom.This utility model is from passage II and the through part of collector tube
Merged inside space is provided for spinning liquid with collector tube bottom, the optimal shear rate that spinning liquid flows through shower nozzle is obtained.
Hollow fiber composite membrane shower nozzle described in the utility model, is provided with a through hole on the side wall in the spinning moulding area,
The through hole is arranged at 30～60 degree in the polarization of side of position, does not directly blow silk.The stream for controlling gas is capable of achieving by through hole
Amount and temperature, and further control the thickness of solvent exchange speed and spinning cortex.
Hollow fiber composite membrane shower nozzle described in the utility model, the material of the sprayer body is selected from high temperature resistant, corrosion-resistant
Material, preferably rustless steel, as more specifically embodiment, is rustless steel sus630.
The invention also discloses the method for preparing hollow-fibre membrane using above-mentioned shower nozzle, step is：In center liquid pipe
Interior injection core liquid, will prepare respectively the supporting layer spinning liquid and stratum disjunctum spinning liquid of hollow-fibre membrane from passage I and the note of passage II
Enter, stratum disjunctum spinning liquid and supporting layer spinning liquid enter collector tube, and cross with the through part of collector tube in passage II, the two
Contact with core liquid at the shower nozzle of center liquid pipe, form an exchange area, solvent exchange and film forming are carried out, in being formed via shower nozzle
Hollow fiber film.
In above-mentioned preparation method, the injection flow velocity of the core liquid is 0.5～2mL/min, the injection of supporting layer spinning liquid
Flow velocity is 1～3mL/min, and the injection flow velocity of stratum disjunctum spinning liquid is 0.05～2mL/min, and the temperature control in preparation process exists
50～80 DEG C；The gas flow being passed through by through hole is 300～500mL/min.
In above-mentioned preparation method, as it will be apparent to a skilled person that the core liquid, stratum disjunctum spinning liquid
With being chosen for known in doughnut field of membrane preparation for supporting layer spinning liquid, inventor's here include specific embodiment it
One：The core liquid is water, and the stratum disjunctum spinning liquid is polyimide solution, and the supporting layer spinning liquid is polysulfones solution, its
Described in stratum disjunctum spinning liquid and supporting layer spinning liquid viscosity be the centipoises of 8-10 ten thousand.
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Embodiment 1
A kind of hollow fiber composite membrane shower nozzle, as shown in figure 1, for a sprayer body with solution channel, arranging in it logical
Road I 11, passage II 12, center liquid pipe 13, collector tube 14 and spinning moulding area 2, as shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, passage I
11 be " L " type, be provided with 4, its entrance is symmetrically distributed on the upper surface of sprayer body, its end be arranged at sprayer body lower half
The upper end of collector tube 14 at portion center communicates；The entrance of passage II 12 is arranged on the side wall of sprayer body, and II 12 points of passage is three sections：
First liquid input section 121, the liquid input section 123 of solution relief area 122 and second, the first liquid input section 121 is a horizontal channel, and solution delays
Rush area 122 for one with collector tube 14 as axle center, depth more than the first liquid input section 121 deep trouth shape annular region, the second feed liquor
Section 123 is connection solution relief area 122 and the annular region of collector tube 14, and its depth is less than solution relief area 122；The center
Liquid pipe 13 is the hollow liquid pipe for being arranged at sprayer body center, and its latter half is through collector tube 14 and extends to spinning moulding area 2,
The collector tube 14 is arranged at the center of sprayer body, and its upper end starts from the outlet of passage I 11, and lower end terminates in spinning moulding area 2；Institute
State spinning moulding area 2 and be arranged at the lower section of center liquid pipe 13, a through hole 21 is provided with its side wall.
In the hollow fiber composite membrane shower nozzle, center liquid pipe 13 and shower nozzle body by integral forming, its lower end is chamfering, is formed
Showerhead, its chamfering radian is 85 degree, and the entrance of center liquid pipe 13 is higher than sprayer body upper surface 10mm, and its wall thickness is 0.05mm,
Its center bore is 0.09mm.The perforate depth of the first liquid input section 121 of passage II 12 be 0.5mm, the depth of solution relief area 122
Spend for 1.0mm, width is 0.35mm, and the length of the second liquid input section 123 is 0.3mm, and depth is 0.5mm.The collector tube 14
Length is 11mm, and the second liquid input section 123 and the connectivity part of collector tube 14 and the distance of the bottom of collector tube 14 are 4mm, collector tube 14
The distance of tube wall of tube wall and center liquid pipe 13 be 0.4mm.The through hole 21 is arranged at 45 degree in the polarization of side, is not directly blown
Silk.
Embodiment 2
The method for carrying out doughnut film preparation using the shower nozzle of embodiment 1, comprises the following steps：
Respectively from passage I 11, passage II 12 and center liquid pipe 13 injection supporting layer spinning liquid, stratum disjunctum spinning liquid and core
Liquid, injection rate is respectively 0.1mL/min, 2mL/min and 1mL/min, and keeps each solution temperature to be 65 DEG C, stratum disjunctum spinning
Liquid, supporting layer spinning liquid converge in collector tube 14 with the connectivity part of the second liquid input section 123, and flow to the bottom of collector tube 14,
Contact with core liquid at the shower nozzle of center liquid pipe 13, carry out solvent exchange, then Jing shower nozzles form doughnut in spinning moulding area 2
Film, is passed through by through hole 65 DEG C of air during spray webbing, intake is 400mL/min.
The core liquid is water, and the stratum disjunctum spinning liquid is polyimide solution, and its viscosity is supporting layer described in 90,000 centipoises
Spinning liquid is polysulfones solution, and its viscosity is 90,000 centipoises.
Hollow-fibre membrane prepared by the embodiment of the present invention 2, two kinds of polymer solution converged before solvent exchange is carried out, Jing
Shower nozzle is once spun into the supply that the more general single layer hollow fibrous membrane of composite hollow fiber membrane saves stratum disjunctum spinning liquid, and
The price of stratum disjunctum spinning liquid is significantly larger than supporting layer solution, therefore with suitable economy.And its stratum disjunctum and support
Layer is not easily disconnected from, it is ensured that product quality simultaneously improves production efficiency.
Claims (6)
1. hollow fiber composite membrane shower nozzle, an including sprayer body with solution channel, it is characterised in that set in the shower nozzle body
Passage I (11), passage II (12), center liquid pipe (13), collector tube (14) and spinning moulding area (2) are put, the passage I (11) is
" L " type, is provided with 2N, and N >=1, the entrance of passage I (11) is symmetrically distributed on the upper surface of sprayer body, its end with arrange
Communicate in collector tube (14) upper end at sprayer body lower half center；The entrance of the passage II (12) is arranged at the side wall of sprayer body
On, extend horizontally to collector tube (14) side wall and communicate therewith；The center liquid pipe (13) is to be arranged in sprayer body center
Empty liquid pipe, its latter half is through collector tube (14) and extends to spinning moulding area (2)；The collector tube (14) is arranged at shower nozzle
The center of body, its upper end starts from the outlet of passage I (11), and lower end terminates in spinning moulding area (2)；The spinning moulding area (2) sets
Center liquid pipe (13) lower section is placed in, a through hole (21) is provided with its side wall, the through hole (21) is arranged at 30 in the polarization of side
～60 degree of position.
2. hollow fiber composite membrane shower nozzle according to claim 1, it is characterised in that the center liquid pipe (13) and shower nozzle
Body by integral forming, its lower end is chamfering, forms showerhead, and its chamfering radian is 75～87 degree.
3. hollow fiber composite membrane shower nozzle according to claim 1, it is characterised in that the passage II (12) is divided into three
Section：First liquid input section (121), solution relief area (122) and the second liquid input section (123), first liquid input section (121) is one
Horizontal channel, the solution relief area (122) for one with collector tube (14) as axle center, depth be more than the first liquid input section (121)
Deep trouth shape annular region, second liquid input section (123) be connection solution relief area (122) and collector tube (14) passage,
It is an annular region, or for 2N bars centered on collector tube (14) axisymmetric passage, wherein N >=1.
4. hollow fiber composite membrane shower nozzle according to claim 3, it is characterised in that first liquid input section (121)
Depth is 0.3～0.8mm, and the depth of the solution relief area (122) is 0.7～1.3mm, second liquid input section (123)
Depth is 0.3～0.8mm, and the depth of the solution relief area (122) is always greater than the first liquid input section (121) and the second liquid input section
(123) depth, in the horizontal direction, the width of the solution relief area (122) is 0.2～0.5mm, second liquid input section
(123) length is 1.5～6mm.
5. hollow fiber composite membrane shower nozzle according to claim 1, it is characterised in that the entrance of the center liquid pipe (13)
With the upper surface of sprayer body flush or above upper surface, its wall thickness is 0.03～0.10mm, its center bore is 0.05～
0.15mm, the distance of center liquid pipe (13) tube wall to collector tube (14) tube wall is 0.2～0.5mm.
6. hollow fiber composite membrane shower nozzle according to claim 1, it is characterised in that the length of the collector tube (14) is
6～15mm, the passage II (12) is 2～8mm with the distance of collector tube (14) bottom with the through part of collector tube (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144595.9U CN206143358U (en) | 2016-10-21 | 2016-10-21 | Hollow fiber complex film shower nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144595.9U CN206143358U (en) | 2016-10-21 | 2016-10-21 | Hollow fiber complex film shower nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206143358U true CN206143358U (en) | 2017-05-03 |
Family
ID=58621871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621144595.9U Active CN206143358U (en) | 2016-10-21 | 2016-10-21 | Hollow fiber complex film shower nozzle |
Country Status (1)
| Country | Link |
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| CN (1) | CN206143358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914229A (en) * | 2018-07-12 | 2018-11-30 | 武汉中智德远科技开发有限公司 | A kind of hollow-fibre membrane spinning coating unit avoiding blocking |
-
2016
- 2016-10-21 CN CN201621144595.9U patent/CN206143358U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914229A (en) * | 2018-07-12 | 2018-11-30 | 武汉中智德远科技开发有限公司 | A kind of hollow-fibre membrane spinning coating unit avoiding blocking |
| CN108914229B (en) * | 2018-07-12 | 2020-04-17 | 南通天梭纺织有限公司 | Avoid coating device for hollow fiber membrane spinning of jam |
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