CN106435788B - Porous hollow fiber membrane spinning appts - Google Patents
Porous hollow fiber membrane spinning appts Download PDFInfo
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- CN106435788B CN106435788B CN201610888306.4A CN201610888306A CN106435788B CN 106435788 B CN106435788 B CN 106435788B CN 201610888306 A CN201610888306 A CN 201610888306A CN 106435788 B CN106435788 B CN 106435788B
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- core
- liquid
- core liquid
- spinning head
- hole
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
Abstract
The present invention provides a kind of novel porous hollow-fibre membrane spinning appts, including feedboard, core liquid deflector, spinneret and independent spinning head；Wherein, the feedboard is arranged on the upper surface of the core liquid deflector, and the lower end surface of the core liquid deflector is arranged in the spinneret；Several described independent spinning heads are removably arranged in the spinning head assembly hole of the spinneret.In the present invention quantity of independent spinning head be it is multiple, formed it is porous assembled, structure is simple, and manufacturing process is simple, in the production process of spinneret, core liquid, feed liquid flowing more evenly, film wire thickness is uniform, and consistency is good.
Description
Technical field
The present invention relates to hollow-fibre membranes, and in particular, to a kind of novel porous hollow-fibre membrane spinning appts.
Background technique
Hollow-fibre membrane is the core of the field devices such as water process, Hemodialysis, sea water desalination, gas separation, liquid separation
Component, is applied to reverse osmosis membrane, microfiltration membranes, a kind of important new material of nanofiltration membrane and ultrafiltration membrane etc., environmentally friendly water process,
The fields such as Hemodialysis, gas separation gradually have been more and more widely used.With to hollow-fibre membrane quality and performance want
The raising asked, the increase of demand, domestic existing production technology and equipment are increasingly difficult to meet production requirement, it is most of according to
Rely import.
How to produce high-performance hollow tunica fibrosa and improve production efficiency, reduces production cost, it has also become in research
One of the problem of empty fiber membrane field is most popular and most critical.The production forming process of hollow-fibre membrane, simplified summary is just
It is that spinning liquid and core liquid are injected into spinning head from the different location of spinning head pedestal, by the special construction inside spinning head,
Doughnut filiform object-, which is sprayed, from spinneret skull is commonly called as film wire.From the point of view of entire film-forming process, except membrane equipment and technique are joined
Number influences outside film wire performance, and the superiority and inferiority of spinning head directly influences some key performances and parameter of film wire.Therefore, it to be closed
The hollow fiber film thread of suitable size, appearance and function admirable, good nozzle design is top priority.
Domestic spinning hollow-fibre membrane is most of using single hole spinning head at present, when single hole spinning head spinning every time only
A silk can be gone out, production efficiency is extremely low, is unable to scale mass production.Existing multi-holed jet cannot be guaranteed to enter each
The core liquid of core liquid pipe and the feed liquid for entering each spinneret orifice keep identical pressure and uniformity, thus also influence the steady of product quality
Qualitative and consistency, such as patent document CN 204570108U, CN101372765A.In some multi-holed jets, it is directed to every
Independent spinneret is arranged in a spinneret orifice, although the concentricity of the corresponding core liquid pipe of spinneret orifice can be adjusted respectively in this way,
Come guarantee film wire thickness uniformity, improve quality, but operate it is excessively cumbersome, moreover, this kind of spinning head, even if adjusting
Good, after a period of use, still can generate film wire has meeting bias, and must readjust.It is envisioned that if there is several hundred
A hole, thousands of a holes always need to adjust every a period of time, and workload has much, this is significant adverse to scale metaplasia
It produces, such as patent document CN101372765, CN204803446U.In some multi-holed jets, core liquid pipe is fixed design, this
Sample such as individual core liquid pipes are blocked or are damaged, it is necessary to be replaced together with feed liquid, the input of core liquid and storage section, waste is very big
And replacement is inconvenient, such as patent document CN204803446U.In addition, in most multi-holed jets, whether core liquid pipe be can
Disassembly design, such as patent document CN101372765A, or the multi-holed jet being composed with the small spinning head of multiple single holes, such as
Patent document CN204570108U is encountering individual core liquid pipes or the blocking of single hole little shower nozzle or damage, it is necessary to shutdown maintenance, simultaneously
When maintenance, need to dismantle entire multi-holed jet, maintenance time is long, and difficulty is big.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of novel porous hollow-fibre membrane spinnerets to fill
It sets.
The novel porous hollow-fibre membrane spinning appts provided according to the present invention, including feedboard, core liquid deflector, spinneret
Plate and independent spinning head；
Wherein, the feedboard is arranged on the upper surface of the core liquid deflector, and the spinneret is arranged in the core
The lower end surface of liquid deflector；
Several described independent spinning heads are removably arranged in the spinning head assembly hole of the spinneret.
Preferably, a liquor inlet is arranged in feedboard upper surface center.
Preferably, the core sap cavity of upper end opening is provided on the core liquid deflector, the bottom of chamber of the core sap cavity is provided with
The core liquid tap hole of several perforation core liquid deflectors；
The core sap cavity of upper end opening is provided on the core liquid deflector, the bottom of chamber of the core sap cavity is provided with several and passes through
The core liquid tap hole of obturator liquid deflector；
Preferably, when the independent spinning head is provided with core liquid diversion pipe, core liquid diversion pipe is shunted by the core liquid
Hole penetrates in the core sap cavity；When the not set core liquid diversion pipe of the independent spinning head, set in each core liquid tap hole upper end
It is equipped with the core liquid flow equalizing ring lower than core sap cavity；
It is provided with boss in the core sap cavity, is provided in the boss and is connected and runs through with the liquor inlet of feedboard
The material liquid flowing channel of core liquid deflector；
The laterally one core liquid import of setting of the side of the core liquid deflector, the interior axis along core liquid import of the core liquid deflector
Direction is provided with the core liquid channel with core liquid inlet communication；Core liquid channel end is provided with the core liquid channel being connected to core sap cavity
Outlet.
Each core liquid is set in a manner of equal height and lower than core sap cavity when core liquid flow equalizing ring or core liquid diversion pipe
When tap hole upper end, core sap cavity is divided into i sections, every section of sectional area Sai=WaiHai, the height and width dimensions of every section of core sap cavity close
System:
Wa1Ha1: Wa2Ha2: Wa3Ha3: ...: WaiHai=n:n-2K:n-4K: ...: n-2 (i-1) K
Wherein, Wai、HaiRespectively indicate width, the depth of core sap cavity；K is the core liquid flow equalizing ring or core liquid of every section of core sap cavity
The quantity of diversion pipe, n are the sum of core liquid flow equalizing ring or core liquid diversion pipe；
As core sap cavity sectional area Sai=WaiHaiIn the case where constant, the height ratio h of core liquid flow equalizing ring or core liquid diversion pipea1:
ha2: ha3: ...: hai=n:n-2K:n-4K: ...: n-2 (i-1) K, wherein Wai、HaiRespectively indicate the width of core sap cavity, haiIt indicates
The height x depth of core liquid flow equalizing ring or core liquid diversion pipe, K are the core liquid flow equalizing ring of every section of core sap cavity or the quantity of core liquid diversion pipe,
N is the sum of core liquid flow equalizing ring or core liquid diversion pipe.
Preferably, the liquid feed chamber of upper end opening is provided on the spinneret, the bottom of chamber of liquid feed chamber be provided with it is several with
Core liquid shunts the corresponding spinning head assembly hole in hole site；
In liquid feed chamber, and diameter coaxial with spinning head assembly hole is provided on the upside of the spinning head assembly hole and is greater than
The feed liquid flow equalizing ring of spinning head assembly hole, the top of the feed liquid flow equalizing ring are higher than the bottom of chamber of liquid feed chamber, are highly lower than liquid feed chamber
Depth；
Surrounding in the bottom of spinneret, each spinning head assembly hole is provided with threaded hole；Or in spinning head assembly hole
Inside it is provided with internal screw thread.
Each spinning head assembly hole upper end is set in a manner of equal height and lower than liquid feed chamber when feed liquid flow equalizing ring
When, liquid feed chamber is divided into i sections, every section of sectional area Sbi=WbiHbi, the height and width dimensions relationship of every section of liquid feed chamber:
Wb2Hb2: Wb2Hb2: Wb3Hb3: ...: WbiHbi=n:n-2K:n-4K: ...: n-2 (i-1) K
Wherein, Wbi、HbiRespectively indicate width, the depth of liquid feed chamber；K is the feed liquid flow equalizing ring number of every section of liquid feed chamber, and n is
Feed liquid flow equalizing ring sum；
As liquid feed chamber sectional area Sbi=WbiHbiIn the case where constant, the height ratio h of feed liquid flow equalizing ringb1: hb2: hb3: ...: hbi
=n:n-2K:n-4K: ...: n-2 (i-1) K, wherein Wbi、HbiRespectively indicate the width of liquid feed chamber, hbiIndicate feed liquid flow equalizing ring
Height x depth, K are the feed liquid flow equalizing ring number of every section of liquid feed chamber, and n is feed liquid flow equalizing ring sum.
Preferably, the independent spinning head includes spinning head main body, spinning head miscellaneous function ring and core liquid diversion pipe；
Wherein, the core liquid diversion pipe connects the top end face of the spinning head main body；The spinning head miscellaneous function ring connects
Connect the bottom face of the spinning head main body；
The side of the spinning head main body is provided with feed liquid injection hole, and the feed liquid injection hole is connected to the spinning head assembling
Hole is provided with the spinneret molding hole being connected with feed liquid injection hole in spinning head main body bottom end；
A core liquid pipe is provided in the spinning head main body, core liquid pipe is threaded through in spinneret molding hole and leads with the core liquid
Flow tube is connected to form core liquid stream road；Core liquid stream road is connected to the core sap cavity.
It preferably, further include spray head mounting plate；
Wherein, the downside of the independent spinning head is arranged in the spray head mounting plate, and the independent spinning head limit is existed
In the spinning head assembly hole；
The mounting plate matrix surrounding is provided with peace corresponding with the threaded hole of spinning head assembly hole on the spinneret
External screw thread corresponding with the internal screw thread being arranged in spinning head assembly hole is provided on loading board fixation hole or mounting plate matrix.
Preferably, mounting plate boss is provided on the spray head mounting plate matrix；The mounting plate boss is provided with always
Wear the spray head mounting hole of mounting plate boss and mounting plate matrix；
The lower end of the independent spinning head is arranged in the spinning head mounting hole.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the present invention in independent spinning head quantity be it is multiple, formed it is porous assembled, structure is simple, manufacturing process letter
It is single, in the production process of spinneret, core liquid, feed liquid flowing more evenly, film wire thickness is uniform, and consistency is good；
2, the multiple independent spinning heads of the present invention constitute spinneret module design, can be realized and carry out spinneret orifice in spinneret mould group
The infinite expanding of quantity, may be implemented can be up to a hundred out simultaneously in a spinneret mould group, thousands of film wires, breakthrough raising production
Efficiency；
3, the present invention in independent spinning head core liquid diversion pipe (or the core liquid flow equalizing ring being arranged on core liquid deflector) energy
So that the core liquid into spinneret film group is flowed into each independent spinning head at the same pressure while uniformly, ensure that core liquid stream was moved
Equal habit and consistency, meanwhile, the feed liquid flow equalizing ring being arranged on spinneret in spinneret film group can make the feed liquid in liquid feed chamber
It flows into independent spinning head simultaneously at the same pressure, ensure that the uniformity and consistency of feed solution flow；Due to each
Film wire be all it is finally formed by core liquid stream road, the material liquid flowing channel of independent spinning head oneself, therefore, as long as qualified independence
Spinning head is installed in spinneret mould group, it will be able to be guaranteed to obtain qualified film wire, not needed to do other adjustings again, greatly reduce work
It measures；
4, the knockdown structure design of the present invention, reduces production and assembly difficulty, when individual independent spinning head blockings or damage
When, under the premise of can not removing in the production line or not dismantle multi-holed jet, realize the maintenance and replacement of single spinning head,
Subtract reduced-maintenance time and materials cost.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is outside structure diagram of the invention；
Fig. 2 is schematic partial cross-sectional view of the invention；
Fig. 3 is the structural schematic diagram of core liquid deflector of the present invention；
Fig. 4 is the structural schematic diagram of spinneret in the present invention；
Fig. 5, Fig. 6 show as the structural schematic diagram of independent spinning head a kind of in the present invention；
Fig. 7 is the schematic cross-section of spray head mounting plate in the present invention；
Fig. 8 (a), Fig. 8 (b) show as the structural schematic diagram of another independent spinning head of the invention；
Fig. 9 (a) is threadedly coupled sectional view with spray head mounting plate for independent spinning head a kind of in the present invention；
Fig. 9 (b) is threadedly coupled sectional view with spray head mounting plate for independent spinning head another in the present invention；
Figure 10 is the assembled state sectional view of the independent not set core liquid diversion pipe of spinning head in the present invention.
In figure:
1- feedboard；2- core liquid deflector；3- spinneret；4- independence spinning head；5- spray head mounting plate；6-O type sealing ring；
11- liquor inlet；21- core sap cavity；22- core liquid tap hole；23- cylinder boss；24- material liquid flowing channel；25- core liquid import；26- core
Liquid channel；27- core liquid channel outlet；28- core liquid flow equalizing ring；31- liquid feed chamber；32- spinning head assembly hole；33- feed liquid flow equalizing ring；
34- threaded hole；41- spinning head main body；42- spinning head miscellaneous function ring；43- core liquid diversion pipe；44- feed liquid injection hole；45- spray
Silk molding hole；46- core liquid pipe；47- core liquid stream road；48- seal groove；49- temperature-adjusting device/sensor；51- mounting plate base
Body；52- mounting plate boss；53- mounting plate fixation hole；54- spinning head mounting hole.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
In the present embodiment, as shown in figs. 1-7.Novel porous hollow-fibre membrane spinning appts provided by the invention, including
Feedboard 1, core liquid deflector 2, spinneret 3 and independent spinning head 4；
Wherein, a liquor inlet 11 is arranged in the center of 1 upper surface of feedboard, is provided on the core liquid deflector 2
The core sap cavity 21 of upper end opening is provided with the core liquid tap hole 22 of several perforation core liquid deflectors 2 in 21 bottom of core sap cavity, in core
The center of sap cavity 21 is provided with a cylinder boss 23, and being provided centrally with for the cylinder boss 23 is connected to liquor inlet 11
And material liquid flowing channel 24 that is concentric and penetrating through core liquid deflector 2.In 2 side of core liquid deflector laterally one core liquid import of setting
25, and the axial direction in the core liquid deflector 2 along core liquid import 25 is provided with the core liquid channel being connected to core liquid import 25
26,26 end of core liquid channel is provided with the core liquid channel outlet 27 being connected to core sap cavity 21.Upper end is provided on the spinneret 3
Open liquid feed chamber 31, is provided with several spinning head assembly holes corresponding with 22 position of core liquid tap hole in 31 bottom of liquid feed chamber
32, in liquid feed chamber 31, it is big to be provided with and diameter coaxial with spinning head assembly hole 32 for the upside of each spinning head assembly hole 32
In the feed liquid flow equalizing ring 33 of spinning head assembly hole 32,33 top of feed liquid flow equalizing ring is higher than the bottom of chamber of liquid feed chamber, is highly lower than
31 depth of liquid feed chamber.Surrounding in the bottom of spinneret 3, each spinning head assembly hole 32 is provided with for installing spray head mounting plate
5 threaded hole 34.It is provided with independent spinning head 4 in each spinning head assembly hole 32, each independent spinning head 4
It is fixed on spinneret 3 by spray head mounting plate 5.
As shown in Figure 5, Figure 6, the side of the spinning head main body 41 has been uniformly arranged in the circumferential direction several feed liquid injection holes 44,
It is provided with the spinneret molding hole 45 being connected with feed liquid injection hole 44 in the bottom centre of spinning head main body 41, in spinning head main body
A core liquid pipe 46 is provided in 41, core liquid pipe 46 is threaded through in spinneret molding hole 45 and coaxial.It is provided in the core liquid pipe 46
One core liquid stream road 47 that is coaxial and being through to core liquid diversion pipe 43.The core liquid diversion pipe 43 is arranged in spinning head main body 41
Top and co-axial.The seal groove 48 of an annular is provided at the top of spinning head main body 41.It is provided in seal groove 48 O-shaped
Sealing ring.The spinning head miscellaneous function ring 42 is a cylinder ring, and setting is in 41 bottom of spinning head main body and co-axial.Institute
State the sensors such as settable temperature-adjusting device or temperature, measurement 49 in spinning head miscellaneous function ring 42.Function is assisted in spinning head
O-ring seal can be provided on the outside of ring 42.
As shown in fig. 7, the mounting plate matrix 51 be a cylindrical body, 51 top center of mounting plate matrix be provided with one with
Its coaxial cylindrical mounting plate boss 52 is provided centrally with one through mounting plate boss 52 and mounting plate in mounting plate boss 52
The spinning head mounting hole 54 of matrix 51, spinning head mounting hole 54 and mounting plate matrix 51 and mounting plate boss 52 are coaxial, are installing
21 surrounding of plate matrix is provided with mounting plate fixation hole 53 corresponding with threaded hole 34.
After independent spinning head 4 is mounted in spinning head mounting hole 54, spinning head assembly hole 32 is inserted into from 3 bottom of spinneret
It is interior, and the core liquid diversion pipe 43 on independent spinning head 4 is threaded through in the core liquid tap hole 22 on core liquid deflector 2, then
Mounting plate fixation hole 53 is locked, in threaded hole 34 by bolt, and independent spinning head 4 is fixed on spinneret 3.Such design
So that individually independent spinning head 4 can be removed when not dismantling entire spinneret mould group, repair and replace, saves
Cost-saving and time.
When using novel porous hollow-fibre membrane spinning appts provided by the invention, in spinning process, feed liquid from into
The liquor inlet 11 of flitch 1 flows into, and under pressure and gravity, by material liquid flowing channel 24, flows into the liquid feed chamber of spinneret 3
31, due to being provided with feed liquid flow equalizing ring 33 in liquid feed chamber 31, the feed liquid of liquid feed chamber 31 is flowed into, entire liquid feed chamber can only be first paved with
31, with the increase of reduction of feed volume, feed liquid thickness increases, and when the thickness of feed liquid is more than 33 height of feed liquid flow equalizing ring, feed liquid is just simultaneously
It with identical pressure, is flowed into each spinning head assembly hole 32 by feed liquid flow equalizing ring 33, due to the effect of O-ring seal, material
Liquid can only flow into the feed liquid injection hole 44 of each independent spinning head 4, uniformly from each spinneret molding hole in the form of material flow
45 spray.
On the other hand, core liquid flows into spinning head from the core liquid import 25 of 2 side of core liquid deflector, under pressure, into
Core liquid channel 26 is crossed, overflows and is flowed into the core sap cavity 21 of core liquid deflector 2 from core liquid channel outlet 27, due to O-ring seal
Effect, with the increase of core liquid measure, core liquid thickness increases, when the thickness of core liquid is higher by core liquid diversion pipe 43, core liquid just simultaneously with
Identical pressure flows into each spinning head core liquid diversion pipe 43 and enters in independent body spinning head 4, by core liquid stream road 47, from every
It is flowed out in a core liquid pipe 46.
Since 46 diameter of core liquid pipe is smaller than the diameter of spinneret molding hole 45, core liquid stream is surrounded by material flow, so that material
Liquid stream forms tubulose, to form required hollow film fiber silk in process later.
In the present embodiment, core sap cavity, core liquid flow equalizing ring or core liquid diversion pipe, liquid feed chamber, feed liquid flow equalizing ring relative dimensions
Relationship can be derived by following mode:
1, when being provided with the core sap cavity of upper end opening on core liquid deflector, size relationship is pushed away by following mode
It leads:
(1) each core is set in a manner of equal height and lower than core sap cavity when core liquid flow equalizing ring or core liquid diversion pipe
When liquid tap hole upper end, the height and width dimensions relationship of core sap cavity need to be determined, specific as follows:
Core sap cavity 21 is divided into i sections, every section of sectional area Sai=WaiHai, wherein Wai、HaiRespectively indicate core sap cavity body
Width and depth.Every section is symmetrically installed K root core liquid flow equalizing ring or core liquid diversion pipe, water inlet among every side (I) section, then n root in total
Core liquid flow equalizing ring or core liquid diversion pipe；Working medium density p (kg/m3)；Mass flow G (kg/s)；Volume flow q (m3/ s) because being
Liquid thinks incompressible, so density is constant, then volume and quality equally can increase and decrease.Core liquid flow equalizing ring or core liquid
Diversion pipe interior diameter d0(mm), inner section S0(m2), every core liquid flow equalizing ring or core liquid diversion pipe flow are equal, i.e. flow velocity V (m/
S) equal, then: total flow G, every core liquid flow equalizing ring or core liquid diversion pipe:
G0=G/n or q0=q/n,
q0=V0S0=V0π(d0/2)2/106,
Wherein, S0For core liquid flow equalizing ring or the sectional area of core liquid diversion pipe；
Then: first segment pipe flow are as follows: q0N/2=Va1Sa1
(V0π(d0/2)2/106) n/2=Va1(Wa1Ha1/4)/106
So Wa1HA1=nπV0d0 2/2Va1
Second segment pipe flow are as follows:
q0n/2-K q0=(n/2-k) q0=Va2Sa2
(n/2-k)(V0π(d0/2)2/106)=Va2(Wa2Ha2/4)/106
So Wa2HA2=(n-2K)πV0d0 2/2Va2
And so on Wa3Ha3=(n-4K) π V0d0 2/2Va3
……
WaiHai=(n-2 (i-1) K) π V0d0 2/2Vai
Need the flow of each core liquid flow equalizing ring or core liquid diversion pipe equal, i.e. Va1=Va2=Va3...=Vai；
So the every section of height and width dimensions of core sap cavity 21 should meet following conditions:
Wa1Ha1: Wa2Ha2: Wa3Ha3: ...: WaiHai=n:n-2K:n-4K: ...: n-2 (i-1) K.
Further, as every section of width W of core sap cavity 21aiWhen remaining unchanged, then the height ratio of every section of core sap cavity 21 is
Ha1: Ha2: Ha3: ...: Hai=n:n-2k:n-4k: ...: n-2 (i-1) K.
(2) as core sap cavity sectional area Sai=WaiHaiIn the case where constant, the height ratio of core liquid flow equalizing ring or core liquid diversion pipe
ha1: ha2: ha3: ...: hai=n:n-2K:n-4K: ...: n-2 (i-1) K (the derivation mode of this formula is same as described above), wherein
Wai、HaiRespectively indicate the width of core sap cavity, haiIndicate that the height x depth of core liquid flow equalizing ring or core liquid diversion pipe, K are every section of core liquid
The core liquid flow equalizing ring of chamber or the quantity of core liquid diversion pipe, n are the sum of core liquid flow equalizing ring or core liquid diversion pipe.
2, when being provided with the liquid feed chamber of upper end opening on spinneret, size relationship is derived by following mode:
(1) being arranged on each spinning head assembly hole in a manner of equal height and lower than liquid feed chamber when feed liquid flow equalizing ring
When end, liquid feed chamber is divided into i sections, every section of sectional area Sbi=WbiHbi, the height and width dimensions relationship of every section of liquid feed chamber:
Wb2Hb2: Wb2Hb2: Wb3Hb3: ...: WbiHbi=n:n-2K:n-4K: ...: n-2 (i-1) K (derivation mode of this formula
It is same as described above)
Wherein, Wbi、HbiRespectively indicate width, the depth of liquid feed chamber；K is the feed liquid flow equalizing ring number of every section of liquid feed chamber, and n is
Feed liquid flow equalizing ring sum；
(2) as liquid feed chamber sectional area Sbi=WbiHbiIn the case where constant, the height ratio h of feed liquid flow equalizing ringb1: hb2:
hb3: ...: hbi=n:n-2K:n-4K: ...: n-2 (i-1) K (the derivation mode of this formula is same as described above), wherein Wbi、HbiPoint
Not Biao Shi liquid feed chamber width, hbiIndicate that the height x depth of feed liquid flow equalizing ring, K are the feed liquid flow equalizing ring number of every section of liquid feed chamber, n is
Feed liquid flow equalizing ring sum.
As shown in figure 8, the diameter of the miscellaneous function ring in independent spinning head 4 is greater than spinning head main body 41 in variation
Diameter.
As shown in Fig. 9 a, 9b, in variation, spray head mounting plate 5 is provided with external thread structure, while on spinneret 3 not
It is provided with threaded hole again, but in spinning head assembly hole 32, internal screw thread corresponding with spray head mounting plate 5 is set.Installation
Plate 5 is fixed by carrying the internal screw thread that external screw thread is screwed into spinning head assembly hole 32 with spinneret 3.
As shown in Figure 10, in variation, two kinds of independent spinning heads 4 omit core liquid diversion pipe 43, but in core liquid water conservancy diversion
It is provided with core liquid flow equalizing ring 28 on plate 2, core liquid equally may be implemented in same pressure while entering the purpose of independent spinning head.Institute
State the inside that the core liquid flow equalizing ring 28 is arranged in core liquid tap hole 22；Core liquid pipe 46 be threaded through in spinneret molding hole and with it is described
Core liquid tap hole 22 is connected.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (8)
1. a kind of porous hollow fiber membrane spinning appts, which is characterized in that including feedboard, core liquid deflector, spinneret and
Independent spinning head；
Wherein, the feedboard is arranged on the upper surface of the core liquid deflector, and the spinneret setting is led in the core liquid
The lower end surface of flowing plate；
Several described independent spinning heads are removably arranged in the spinning head assembly hole of the spinneret；
It is provided with the liquid feed chamber of upper end opening on the spinneret, the bottom of chamber of liquid feed chamber is provided with several and core liquid and shunts hole location
Set corresponding spinning head assembly hole；
In liquid feed chamber, and diameter coaxial with spinning head assembly hole is provided on the upside of the spinning head assembly hole greater than spinneret
The feed liquid flow equalizing ring of head assembly hole, the top of the feed liquid flow equalizing ring are higher than the bottom of chamber of liquid feed chamber, are highly lower than the depth of liquid feed chamber
Degree；
Surrounding in the bottom of spinneret, each spinning head assembly hole is provided with threaded hole；Or it is set in spinning head assembly hole
It is equipped with internal screw thread；
The independent spinning head includes spinning head main body, spinning head miscellaneous function ring and core liquid diversion pipe；
Wherein, the core liquid diversion pipe connects the top end face of the spinning head main body；The spinning head miscellaneous function ring connects institute
State the bottom face of spinning head main body；
The diameter of the miscellaneous function ring is greater than the diameter of the spinning head main body.
2. porous hollow fiber membrane spinning appts according to claim 1, which is characterized in that in the feedboard upper surface
A liquor inlet is arranged in the heart.
3. porous hollow fiber membrane spinning appts according to claim 1, which is characterized in that set on the core liquid deflector
It is equipped with the core sap cavity of upper end opening, the bottom of chamber of the core sap cavity is provided with the core liquid tap hole of several perforation core liquid deflectors；
When the independent spinning head is provided with core liquid diversion pipe, core liquid diversion pipe penetrates the core by the core liquid tap hole
In sap cavity；When the not set core liquid diversion pipe of the independent spinning head, it is provided in each core liquid tap hole upper end lower than core liquid
The core liquid flow equalizing ring of chamber；
It is provided with boss in the core sap cavity, is provided with and is connected with the liquor inlet of feedboard and through core liquid in the boss
The material liquid flowing channel of deflector；
The laterally one core liquid import of setting of the side of the core liquid deflector, the core liquid deflector are interior along the axial direction side of core liquid import
To the core liquid channel being provided with core liquid inlet communication；Core liquid channel end is provided with the core liquid channel being connected to core sap cavity and goes out
Mouthful.
4. porous hollow fiber membrane spinning appts according to claim 1, which is characterized in that the side of the spinning head main body
Face is provided with feed liquid injection hole, and the feed liquid injection hole is connected to the spinning head assembly hole, is arranged in spinning head main body bottom end
There is the spinneret molding hole being connected with feed liquid injection hole；
Be provided with a core liquid pipe in the spinning head main body, core liquid pipe be threaded through in spinneret molding hole and with the core liquid diversion pipe
It is connected to form core liquid stream road；Core liquid stream road is connected to the core sap cavity.
5. porous hollow fiber membrane spinning appts according to claim 1, which is characterized in that further include spray head mounting plate；
Wherein, the downside of the independent spinning head is arranged in the spray head mounting plate, by the independent spinning head limit described
In spinning head assembly hole；
The mounting plate matrix surrounding is provided with mounting plate corresponding with the threaded hole of spinning head assembly hole on the spinneret
External screw thread corresponding with the internal screw thread being arranged in spinning head assembly hole is provided on fixation hole or mounting plate matrix.
6. porous hollow fiber membrane spinning appts according to claim 5, which is characterized in that the spray head mounting plate matrix
On be provided with mounting plate boss；The mounting plate boss is provided with one through the installation of the spray head of mounting plate boss and mounting plate matrix
Hole；
The lower end of the independent spinning head is arranged in the spinning head mounting hole.
7. porous hollow fiber membrane spinning appts according to claim 3, which is characterized in that
When each core liquid tap hole is arranged in a manner of equal height and lower than core sap cavity in core liquid flow equalizing ring or core liquid diversion pipe
When upper end, core sap cavity is divided into i sections, every section of sectional area Sai=WaiHai, the height and width dimensions relationship of every section of core sap cavity:
Wa1Ha1: Wa2Ha2: Wa3Ha3: ...: WaiHai=n:n-2K:n-4K: ...: n-2 (i-1) K
Wherein, Wai、HaiRespectively indicate width, the depth of core sap cavity；K is the core liquid flow equalizing ring or core liquid diversion pipe of every section of core sap cavity
Quantity, n is the sum of core liquid flow equalizing ring or core liquid diversion pipe；
As core sap cavity sectional area Sai=WaiHaiIn the case where constant, the height ratio h of core liquid flow equalizing ring or core liquid diversion pipea1: ha2:
ha3: ...: hai=n:n-2K:n-4K: ...: n-2 (i-1) K, wherein Wai、HaiRespectively indicate the width of core sap cavity, haiIndicate core
The height x depth of liquid flow equalizing ring or core liquid diversion pipe, K are the core liquid flow equalizing ring of every section of core sap cavity or the quantity of core liquid diversion pipe, n
For core liquid flow equalizing ring or the sum of core liquid diversion pipe.
8. porous hollow fiber membrane spinning appts according to claim 1, which is characterized in that
When each spinning head assembly hole upper end is arranged in a manner of equal height and lower than liquid feed chamber in feed liquid flow equalizing ring, feed liquid
Chamber is divided into i sections, every section of sectional area Sbi=WbiHbi, the height and width dimensions relationship of every section of liquid feed chamber:
Wb2Hb2: Wb2Hb2: Wb3Hb3: ...: WbiHbi=n:n-2K:n-4K: ...: n-2 (i-1) K
Wherein, Wbi、HbiRespectively indicate width, the depth of liquid feed chamber；K is the feed liquid flow equalizing ring number of every section of liquid feed chamber, and n is that feed liquid is equal
Flow ring sum；
As liquid feed chamber sectional area Sbi=WbiHbiIn the case where constant, the height ratio h of feed liquid flow equalizing ringb1: hb2: hb3: ...: hbi=n:
N-2K:n-4K: ...: n-2 (i-1) K, wherein Wbi、HbiRespectively indicate the width of liquid feed chamber, hbiIndicate the height of feed liquid flow equalizing ring
Depth, K are the feed liquid flow equalizing ring number of every section of liquid feed chamber, and n is feed liquid flow equalizing ring sum.
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| CN108517574B (en) * | 2018-06-04 | 2023-09-29 | 宁波建嵘科技有限公司 | Spliced hollow fiber membrane spinneret |
| EP3842132A1 (en) * | 2019-12-23 | 2021-06-30 | Gambro Lundia AB | Spinneret |
| CN111151142A (en) * | 2019-12-31 | 2020-05-15 | 天津膜天膜科技股份有限公司 | Multifunctional lapping film-making assembly |
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