CN206970747U - A kind of electrostatic spinneret system based on solid needle spinning appts - Google Patents
A kind of electrostatic spinneret system based on solid needle spinning appts Download PDFInfo
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- CN206970747U CN206970747U CN201720779872.1U CN201720779872U CN206970747U CN 206970747 U CN206970747 U CN 206970747U CN 201720779872 U CN201720779872 U CN 201720779872U CN 206970747 U CN206970747 U CN 206970747U
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Abstract
The utility model discloses a kind of electrostatic spinneret system based on solid needle spinning appts, above-mentioned solid needle spinning appts include solid needle, and solid needle includes needle body and is sheathed on the needle point of needle body one end；And needle guard, its axial direction of needle guard interior edge offers the centre bore being engaged with solid needle, solid needle is sheathed in needle guard by centre bore, and, the outer wall of solid needle and the hole wall gap of centre bore coordinate, and the side wall of needle guard one end, which is provided with, feeds liquid passage, feeds liquid passage through the side wall of needle guard and is connected with centre bore, feed and liquid feed valve is provided with liquid passage, relatively close one end for feeding liquid passage is provided with liquid valve in centre bore.In solid needle spinning appts designed by the utility model, the solid needle and electrode retaining collar that are wrapped up using needle guard, it can effectively weaken the electrostatic repulsion and end effect phenomenon between syringe needle；Meanwhile each electrode retaining collar is in suitable distance with receiving electrode by adjusting the height of electrode retaining collar, achievable field strength is uniform, so as to reach the effect of uniform spinning.
Description
Technical field
It the utility model is related to electrostatic spinneret technical field, more particularly to a kind of solid needle spinneret system and its use quiet
Electric spinneret system.
Background technology
Nanofiber broadly refers to fiber of the diameter in below 1000nm, has the spies such as specific surface area is big, porosity is high
Point, it is widely used in high efficiency filter material, wound dressing, organizational project, composite, battery electrode and micro-nano device etc.
Field.
Electrostatic spinning is to prepare nanometer by electric field force strained polymer solution caused by high-voltage DC power supply or melt
The method of fiber, it is to prepare one of most effective technology of nanofiber at present.Electrostatic spinning includes solution electrostatic spinning and melting
The major class of electrostatic spinning two, wherein solution electrostatic spinning are simply rapidly developed due to its equipment and technique.
Solution electrostatic spinning apparatus mainly includes high voltage power supply generator, spinning head, liquid-supplying system and fiber reception device
Four parts.Solution electrostatic spinning apparatus can realize spinning, such as patent using single metal capillary needle tubing as spinning head
200420020596.3, the technology disclosed in 200410025622.6 etc..But due to traditional single metal capillary needle tubing electrostatic
Yarn spinning productivity is relatively low, can not meet industrialization demand, turns into the bottleneck problem for restricting its development.
At present, spininess hair style (band pore syringe needle) and nothing can be summarized as by realizing the correlation technique of scale electrostatic spinning
The major class of needle-based two.Multiple metal kernel small needle tubes are formed Multi needle by Theron etc. in the way of arranged in a straight line or rectangular arranged
Electrostatic spinning apparatus [S.A.THERON, A.L.YARIN, E.ZUSSMAN, E.KROLL.Multiple jets in
electrospinning：Experiment and modeling.Polymer, 2005,46 (9)：2889-2899.], it is domestic and
Also occur many similar patents in the world, such as 200420107832.5,201510278266.7, institute's public affairs such as WO2007035011
The technology opened.
Multi needle electrostatic spinning technique spinneret position is controllable, it is controllable to feed liquid measure, spinning process is stable, and has in yield
Greatly improve, but serious " edge effect (End effect) " phenomenon occur during Multi needle electrostatic spinning, i.e., by
In Coulomb repulsion be present between row's Multi needle, the jet that the syringe needle on both sides comes out is caused to make reception to both sides knockdown
Device can only receive centre few fibers, cause electrostatic spinning efficiency and yield to be had a greatly reduced quality, simultaneously as each syringe needle it
Between field strength interfere so that field strength distribution is uneven, causes the tunica fibrosa uniformity that obtains bad；In addition, syringe needle
Block, inconvenience is cleaned, the electrically charged backflow of syringe pump finite capacity and syringe needle institute is easily caused electric elements damage, woven hose Louis
The problems such as generation is exploded and caught fire, all largely hinders the industrialized process of Multi needle electrostatic spinning.
Syringe needle blockage problem is not present in needle-less electrostatic spinning equipment, and yield improves a lot, still than needle-based Static Spinning
Due to emitter stage mostly without spike and area it is larger, critical field is powerful caused by taylor cone, and energy consumption is higher；Meanwhile taylor cone
Caused position and state are uncontrollable, and gained fiber thickness is irregular, fiber is partially thick, product quality is difficult to control.In addition, needle-less
Static Spinning often uses open feed flow, and solvent volatilization, solution concentration can be caused to become the problems such as big, spinning process is uncontrollable, past
It is past to bring very big inconvenience to industrialized production.
Utility model content
For above mentioned problem existing for existing electrostatic spinning technique field, one kind is now provided and is based on solid needle spinning appts
Electrostatic spinneret system, it is intended to solve conventional needle tubular type electrostatic spinning apparatus syringe needle block, inconvenience cleaning, single spinning solution amount
It is molten caused by open feed flow in the problems such as limited, field strength uneven and existing " edge effect " and needle-less electrostatic spinning
Agent volatilization, spinning jet are uncontrollable and the problems such as energy consumption is too high.
Concrete technical scheme is as follows：
One side of the present utility model is to provide a kind of solid needle spinning appts, has the feature that, including：
Solid needle, solid needle include needle body and the needle point located at needle body one end；And needle guard, its axial direction side of needle guard interior edge
To the centre bore that is engaged with solid needle is offered, needle body sets one end of needle point to be stretched into from one end of needle guard in centre bore, and
And the outer wall of solid needle and the hole wall gap of centre bore coordinate, the side wall of the needle guard other end, which is provided with, feeds liquid passage, feeds liquid passage
Through needle guard side wall and connected with centre bore, feed in liquid passage and be provided with liquid feed valve, relatively close hello liquid passage in centre bore
One end is provided with liquid valve, and coaxial sleeve is provided with electrode retaining collar on the hole wall of the centre bore of the needle guard other end, also, electrode retaining collar is sheathed on out
The periphery of liquid valve.
Above-mentioned solid needle spinning appts, also have the feature that, needle body, needle point are cylindrical shape, also, needle point
By being connected to needle body cross-sectional area identical bottom surface on needle body.
Above-mentioned solid needle spinning appts, also have the feature that, needle body is made up of metal material, and needle point is by insulation material
Material is made, and above-mentioned insulating materials includes polyimides, polyformaldehyde, phenolic resin, polytetrafluoroethylene (PTFE), polypropylene, high-strength polyethylene
Or the organic or inorganic insulating materials such as ceramics.
Above-mentioned solid needle spinning appts, also have the feature that, needle guard is made up of insulating materials, above-mentioned insulating materials
It is exhausted including organic or inorganics such as polyimides, polyformaldehyde, phenolic resin, high-strength polyethylene, polypropylene, polytetrafluoroethylene (PTFE) or ceramics
Edge material.
Above-mentioned solid needle spinning appts, also have the feature that, liquid feed valve and liquid valve are check valve.
Second aspect of the present utility model is to provide a kind of electrostatic spinneret system, including electrostatic generator, reception device,
Liquid feed device and jacking system, are had the feature that, in addition to some above-mentioned solid needle spinning appts, liquid feed device are provided with
It is some to correspond and connect with liquid feed valve with the one-to-one microchannel of solid needle spinning appts, microchannel, jacking system
Be connected with solid needle and drive solid needle to do linear reciprocating motion, reception device is located at the lower section of liquid valve, electrode retaining collar with it is quiet
Malleation electrode in electric generator electrically connects, and the negative voltage electrode in receiving electrode and electrostatic generator in reception device is electrically connected
Connect.
Above-mentioned electrostatic spinneret system, also has the feature that, liquid feed device is provided with rack-style feed flow runner, microflow channels
Road is located at the bottom of feed flow runner and with being connected inside feed flow runner.
Above-mentioned electrostatic spinneret system, also has the feature that, jacking system does past including needle plate and driving needle plate
The motor of linear motion, needle body is connected with respect to the needle point other end with needle plate in each solid needle.
Above-mentioned electrostatic spinneret system, also has the feature that, reception device also includes the deflector roll that two width be arranged in parallel
And the base fabric between two width deflector rolls is wound in, base fabric is located at the lower section of liquid valve.
Above-mentioned electrostatic spinneret system, also has the feature that, electrostatic spinneret system also includes controller, controller with
Motor electrically connects.
The beneficial effect of such scheme is：
In solid needle spinning appts designed by the utility model, the solid needle and electrode retaining collar that are wrapped up using needle guard, can have
Effect weakens the electrostatic repulsion and end effect phenomenon between syringe needle；Meanwhile make each electrode retaining collar by adjusting the height of electrode retaining collar
Suitable distance is in receiving electrode, achievable field strength is uniform, so as to reach the effect of uniform spinning；Solid needle it is upper and lower
Move back and forth, can effectively solve the needle guard clogging that capillary (syringe needle) formula electrostatic spinning is more focused on；The unidirectional feed liquor set
Valve and unidirectional liquid valve coordinate the motion of solid needle to prevent electric charge adverse current, and powered solution be only limitted to needle point and needle guard top it
Between very little region, significantly reduce a large amount of electric charges feed liquid passage accumulation caused by blast, catch fire probability, can be achieved safety feed
Liquid and continuous production.
Brief description of the drawings
Fig. 1 is the structural representation of the single solid needle spinning appts provided in embodiment of the present utility model；
Fig. 2 is the electrostatic spinneret system based on multiple solid needle spinning appts provided in embodiment of the present utility model
Structural representation.
In accompanying drawing：1st, solid needle；11st, needle body；12nd, needle point；2nd, needle guard；21st, centre bore；211st, liquid valve；22nd, liquid is fed to lead to
Road；221st, liquid feed valve；23rd, electrode retaining collar；3rd, electrostatic generator；31st, malleation electrode；32nd, negative voltage electrode；4th, reception device；41st, lead
Roller；42nd, base fabric；5th, liquid feed device；51st, microchannel；52nd, feed flow runner；6th, jacking system；61st, needle plate.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained every other embodiment, belong to the scope of the utility model protection.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as of the present utility model
Limit.
Fig. 1 is the structural representation of the solid needle spinning appts provided in embodiment of the present utility model, and Fig. 2 is this practicality
The structural representation of the electrostatic spinneret system provided in new embodiment.As depicted in figs. 1 and 2, implementation of the present utility model
The electrostatic spinneret system provided in example, including：Electrostatic generator 3, reception device 4, liquid feed device 5 and jacking system 6, in addition to
Solid needle spinning appts, liquid feed device 5 are provided with some and one-to-one microchannel 51 of solid needle spinning appts, microchannel
51 connect with the one-to-one corresponding of liquid feed valve 221, and jacking system 6 is connected with solid needle 1 and drives solid needle 1 to do linear reciprocating motion,
Reception device 4 is located at the lower section of liquid valve 211, and electrode retaining collar 23 electrically connects with the malleation electrode 31 in electrostatic generator 3, receives
Receiving electrode (not shown) in device 4 electrically connects with the negative voltage electrode 32 in electrostatic generator 3.
Specifically, liquid feed device 5 is provided with rack-style feed flow runner 52, microchannel 51 located at the bottom of feed flow runner 52 and
Connected with the inside of feed flow runner 52, in the present embodiment, microchannel 51 is corresponded by microchannel and liquid feed valve 221 to be connected
It is logical, to be each 1 uniform feed flow of solid needle.
Specifically, jacking system 6 includes needle plate 61 and driving needle plate 61 does the eccentric wheel or cam of linear reciprocating motion
Mechanism, line slide rail, motor, needle body 11 is connected with respect to the other end of needle point 12 with needle plate 61 in each solid needle 1.
Specifically, reception device 4 includes the two width deflector roll 41 be arrangeding in parallel and the base being wound between two width deflector rolls 41
Cloth 42, base fabric 42 are located at the lower section of liquid valve 211, new using base fabric unwinding and alternative practicality of coiler device on this basis
The fixed length circulation winding mechanism of type embodiment diagram, realizes and industrializes continuous Static Spinning.
In addition, in the electrostatic spinneret system that embodiment of the present utility model provides, electrostatic spinneret system also includes controller
(in figure for display), controller electrically connects with motor, and controller is for controlling jacking system 6 and solid in the present embodiment
Frequency, traverse and the starting equalization point that pin 1 pumps.
Specifically, as shown in figure 1, the solid needle spinning appts provided in embodiment of the present utility model, including：Solid needle
1, solid needle 1 includes needle body 11 and the needle point 12 located at the one end of needle body 11；And needle guard 2, its axial direction of the interior edge of needle guard 2 are opened
Provided with the centre bore 21 being engaged with needle body 11, needle body 11 sets one end of needle point 12 to stretch into centre bore 21 from one end of needle guard 2
It is interior, also, the hole wall gap of the outer wall of solid needle 1 and centre bore 21 coordinates, and the side wall of the other end of needle guard 2, which is provided with, feeds liquid passage
22, liquid passage 22 is fed through the side wall of needle guard 2 and is connected with centre bore 21, is fed in liquid passage 22 and is provided with liquid feed valve 221, centre bore
Relatively close one end for feeding liquid passage 22 is provided with liquid valve 211 in 21, coaxial sleeve on the hole wall of the centre bore 21 of the other end of needle guard 2
Provided with electrode retaining collar 23, also, electrode retaining collar 23 is sheathed on the periphery of liquid valve 211, and in the present embodiment, electrode retaining collar 23 is by metal material
It is made, its external diameter is equal with the diameter of centre bore 21.
Specifically, in embodiment of the present utility model, needle body 11 and needle point 12 are cylindrical shape, needle point 12 by with pin
The cross section identical bottom surface of body 11 is connected to one end of needle body 11, specifically, needle body 11 is made up of metal material, the present embodiment
Middle needle body 11 is made of stainless steel；Needle point 12 is made up of insulating materials, and needle point 12 is made up of polytetrafluoroethylene (PTFE) in the present embodiment, pin
Set 2 is made up of insulating materials, and needle guard 2 is made up of thermosetting phenolic resin in the present embodiment.
Specifically, in embodiment of the present utility model, liquid feed valve 221 and liquid valve 211 are check valve, in the present embodiment
By setting feed liquor check valve 221 and going out liquid check valve 211 so that spinning solution may only be entered in the needle guard 2 that insulate by outside
Heart hole 21, can not reverse flow, and spinning solution can be released by needle body 11, but air will not be inhaled into.
In embodiment of the present utility model, solid needle 1 is fitted close with centre bore 21, when jacking system 6 drives solid needle 1
Upwards during motion, negative-pressure adsorption effect compels to use that liquid check valve 211 is closed, feed liquor check valve 221 is opened, and spinning solution is filled by feed flow
Put 5 and centre bore 21 is inhaled into by feed liquor check valve 221, smoothly realize the feeding of spinning solution, and effectively prevent from coming from needle point
12 or the position of electrode retaining collar 23 the electric charge that carries of spinning solution sail against the current into feed liquid passage 22 and the potential safety hazard brought；Work as liter
Drop system 6 drives solid needle 1, and normal pressure releases downwards spinning solution when moving downward, go out liquid check valve 211 open, feed liquor list
Closed to valve 221, solid needle 1 releases downwards spinning solution, and is excited when reaching at electrode retaining collar 23 by electric field and produce Taylor
Cone, and effectively further prevent electric charge that the spinning solution from needle point 12 or the position of electrode retaining collar 23 carries sail against the current into hello
Liquid passage 22 and the potential safety hazard brought, simultaneously as solid needle 1 can be moved with upper and lower reciprocating motion relative to gas type feed flow
For power, enough, continual spinning solution supply (the feed flow number i.e. feed flow in the unit interval can be provided for large-scale production
Frequency is determined by the eccentric wheel in jacking system 6 or the rotating speed of cam main shaft), can effectively solve capillary needle type static spinning and block up
Phenomenon is filled in, is sailed against the current effectively preventing the electric charge that the spinning solution from needle point 12 or the position of electrode retaining collar 23 carries into hello liquid
Passage 22 and while the potential safety hazard brought, can be achieved it is continuous, safety feed liquid, effectively prevent caused by charge accumulated
The generation of hidden danger such as catch fire, explode.
The operation principle and process of electrostatic spinneret system provided by the utility model be：Electrode retaining collar corresponding to each solid needle 1
23 are connected by plain conductor and are connected with the malleation electrode 31 of electrostatic generator 3, and logical upper given voltage value, reception device 4
In receiving electrode be connected with the negative voltage electrode 32 of electrostatic generator 3, and logical upper given voltage value；Calculated according to required liquid supply rate
The climb of solid needle 1, controller control motor start and drive lifting solid needle 1, and now liquid feed valve 221 is closed,
With the rising of solid needle 1, there is vacuum area in needle guard 2, when solid needle 1, which is thus lifted to, feeds liquid 22 area above of passage,
Liquid feed valve 221 is opened, and the spinning solution in liquid feed device 5 is inhaled into the vacuum area of the bottom of needle guard 2 by feeding liquid passage 22,
And after solid needle 1 is thus lifted to specified altitude assignment, motor starts to promote solid needle 1 down to move, and now liquid feed valve 221 closes
Close, liquid valve 211 is opened, and spinning solution is flowed out by liquid valve 211, and is excited and produced by electric field when reaching at electrode retaining collar 23
Taylor cone, the big I for further adjusting voltage/electric field obtain spinning jet, and jet is in the presence of electric field force to reception device
During flight, spin solvent volatilization, polymer solidification, deposition form nanofiber on the reception device, solid needle 1 according to
Above-mentioned course of work persistent movement, continuous imbibition, hydrojet with carry out continue spinning.
The utility model preferred embodiment is these are only, not thereby limits embodiment of the present utility model and protection
Scope, to those skilled in the art, it should can appreciate that all with the utility model specification and diagramatic content institute
Scheme obtained by the equivalent substitution made and obvious change, should be included in the scope of protection of the utility model
It is interior.
Claims (10)
- A kind of 1. solid needle spinning appts, it is characterised in that including：Solid needle (1), the solid needle (1) include needle body (11) and the needle point (12) located at the needle body (11) one end；With AndNeedle guard (2), described its axial direction of needle guard (2) interior edge offer the centre bore (21) being engaged with the needle body (11), The needle body (11) sets one end of needle point (12) to be stretched into from one end of the needle guard (2) in the centre bore (21), also, institute The hole wall gap of the outer wall and the centre bore (21) of stating solid needle (1) coordinates, and the side wall of needle guard (2) other end is provided with Liquid passage (22) is fed, it is described to feed liquid passage (22) through the side wall of the needle guard (2) and connected with the centre bore (21), it is described Feed and liquid feed valve (221) is provided with liquid passage (22), relatively close described one end for feeding liquid passage (22) in the centre bore (21) Provided with liquid valve (211), coaxial sleeve is provided with electrode retaining collar on the hole wall of the centre bore (21) of needle guard (2) other end (23), also, the electrode retaining collar (23) is sheathed on the periphery of the liquid valve (211).
- 2. solid needle spinning appts according to claim 1, it is characterised in that the needle body (11) and the needle point (12) It is cylinder, also, the needle point (12) is described by being connected to the needle body (11) cross-sectional area identical bottom surface On needle body (11).
- 3. solid needle spinning appts according to claim 1 or 2, it is characterised in that the needle body (11) is by metal material It is made, the needle point (12) is made up of insulating materials.
- 4. solid needle spinning appts according to claim 3, it is characterised in that the needle guard (2) is made up of insulating materials.
- 5. solid needle spinning appts according to claim 4, it is characterised in that the liquid feed valve (221) and it is described go out liquid Valve (211) is check valve.
- 6. a kind of electrostatic spinneret system, including electrostatic generator (3), reception device (4), liquid feed device (5) and jacking system (6), it is characterised in that also including some solid needle spinning appts as described in claim any one of 1-5, the liquid feed device (5) be provided with it is some with the one-to-one microchannel of solid needle spinning appts (51), the microchannel (51) with it is described Liquid feed valve (221) corresponds connection, and the jacking system (6) is connected with the solid needle (1) and drives the solid needle (1) Do linear reciprocating motion, the reception device (4) is located at the lower section of the liquid valve (211), and the electrode retaining collar (23) is and institute The malleation electrode (31) stated in electrostatic generator (3) is electrically connected, and the receiving electrode in the reception device (4) is sent out with the electrostatic Negative voltage electrode (32) electrical connection in raw device (3).
- 7. electrostatic spinneret system according to claim 6, it is characterised in that the liquid feed device (5) supplies provided with rack-style Liquid stream road (52), the microchannel (51) are located at the bottom of the feed flow runner (52) and internal with the feed flow runner (52) Connection.
- 8. the electrostatic spinneret system according to claim 6 or 7, it is characterised in that the jacking system (6) includes needle plate (61) and the driving needle plate (61) does the motor of linear reciprocating motion, the needle body of each solid needle (1) (11) other end of relatively described needle point (12) is connected with the needle plate (61).
- 9. electrostatic spinneret system according to claim 8, it is characterised in that the reception device (4) is parallel including two The deflector roll (41) of setting and the base fabric (42) being wound between deflector roll (41) described in two width, the base fabric (42) go out described in The lower section of liquid valve (211).
- 10. electrostatic spinneret system according to claim 9, it is characterised in that the electrostatic spinneret system also includes control Device, the controller are connected with the motor.
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| CN201720779872.1U CN206970747U (en) | 2017-06-30 | 2017-06-30 | A kind of electrostatic spinneret system based on solid needle spinning appts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151824A (en) * | 2017-06-30 | 2017-09-12 | 天津工业大学 | A kind of electrostatic spinneret system based on solid needle spinning appts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151824A (en) * | 2017-06-30 | 2017-09-12 | 天津工业大学 | A kind of electrostatic spinneret system based on solid needle spinning appts |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yanbo Inventor after: Liu Jian Inventor before: Liu Yanbo |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210924 Address after: 430073 No. 1 Textile Road, Hongshan District, Hubei, Wuhan Patentee after: Wuhan Textile University Address before: No. 399, Binshui West Road, Xiqing District, Tianjin Patentee before: TIANJIN POLYTECHNIC University |