CN207452309U - A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning - Google Patents
A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning Download PDFInfo
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- CN207452309U CN207452309U CN201721591308.3U CN201721591308U CN207452309U CN 207452309 U CN207452309 U CN 207452309U CN 201721591308 U CN201721591308 U CN 201721591308U CN 207452309 U CN207452309 U CN 207452309U
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- electrostatic spinning
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Abstract
The utility model discloses a kind of multistage injection air-flows of electrostatic spinning to aid in device for thinning, including gas gathering mask, fiber receiver board, enclosed hood, fibrous refinement pipe, level-one injector, two level injector, HV generator, three-level injector, extruder, nozzle, kuppe, electrode plate with holes, it calms the anger branch pipe, heater, calm the anger manifold, pressure-regulating valve and compressor, a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning of the utility model, in the negative pressure gas flow of the indoor generation of sucking when being worked using injector, control fiber movement locus, directional collecting fiber, slenderizing is carried out to fiber using the high-speed flow even supersonic airstream of injector outlet.In thinning process, the temperature of fiber surface can be well controlled, and the speed difference of fiber and air-flow increases step by step, prevent that fiber is excessive with air velocity difference and is broken.The device can realize the preparation of electrostatic spinning superfine nano fiber, and the nanofiber quality collected is close, and shape is easy to control.
Description
Technical field
The present invention relates to a kind of electrostatic spinning multistage injection air-flow auxiliary device for thinning, category electrostatic spinning fields.
Background technology
Nanofiber have the characteristics that porosity height, large specific surface area, surface can and activity it is high, be widely used in medicine,
The fields such as environmental protection, aviation.The refinement of nanofiber, which is always that researcher is tireless, to pursue a goal.Influence fibre diameter
The viscosity of principal element including raw material, voltage strength, fiber receive distance etc., but its to the effect of fibrous refinement far away from height
Fast air-flow is notable.
High-speed flow auxiliary refinement is using, there are speed difference, high-speed flow is to fiber between high-speed flow and fibre deformation
Surface generates traction force, so as to achieve the purpose that attenuated fibers.Speed difference is bigger between air-flow and fibre deformation, and traction is made
Firmly bigger, fibrous refinement effect is more apparent.It there is now a series of device using positive pressure gas flow auxiliary attenuated fibers, such as：
Patent air-flow auxiliary mixing electrostatic spinning apparatus (CN103205818A) discloses jet-impingement head to be porous horn-like external
High pressure draught aids in device for thinning；A kind of solution differential electrostatic spinning apparatus of inside and outside high-speed flow auxiliary of patent
(CN103924308A) spinning nozzle for having high pressure draught passage at center and peripheral disposition is disclosed.Positive pressure gas flow attenuated fibers
It is with obvious effects, but need to be carried out in open environment, there are airflow direction, speed, temperature to be difficult to control, air velocity attenuation
Soon, stretch insufficient；Fiber movement track is unordered in a jumble, can not be collected and secondary refinement；Fiber surface solidification is very fast, nothing
The problem of method fully refines.
Therefore for this problem, it is proposed that a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning, using drawing
The negative pressure gas flow of indoor generation, control fiber movement locus are being sucked when emitter works, directional collecting fiber is gone out using injector
The high-speed flow even supersonic airstream of mouth carries out multiple fractionation stretching to fiber, can realize that electrostatic spinning prepares ultra-fine receive
Rice fiber.
The content of the invention
The present invention is for the purpose of preparing superfine nano fiber, the operation principle based on injector, proposes to utilize injector work
In the negative pressure gas flow of the indoor generation of sucking, control fiber movement locus, directional collecting fiber, the height exported using injector when making
Fast air-flow even supersonic airstream to fiber carry out multiple fractionation slenderizing, entire thinning process in the pipeline of closing into
Row can be very good the temperature field and flow field of control thinning process.
A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning of the present invention, including：It is received including gas gathering mask, fiber
Plate, enclosed hood, fibrous refinement pipe, level-one injector, two level injector, HV generator, three-level injector, extruder,
Nozzle, kuppe, electrode plate with holes, branch pipe of calming the anger, heater, the manifold that calms the anger, pressure-regulating valve and compressor, fibrous refinement pipe
Kuppe, level-one injector, two level injector and three-level injector, fibrous refinement are installed successively from upper end to lower end by screw thread
Fiber collecting board, gas gathering mask are installed in the outlet of pipe lower end successively, are fixed with enclosed hood on fiber collecting board, gas gathering mask and compressor enter
Mouth is connected, and installs having heaters on the snorkel of compressor outlet, the manifold that calms the anger is divided into three branch pipes of calming the anger, and draws respectively with level-one
Emitter, two level injector, three-level injector are connected, and pressure controller is respectively mounted on branch pipe of each calming the anger, and electrode plate with holes passes through
Fibrous refinement pipe, between level-one injector and two level injector, nozzle is connected with extruder and electrostatic transmitter, is mounted on
Above kuppe.
A kind of electrostatic spinning of the present invention is sealing the refinement of fiber with multistage injection air-flow auxiliary device for thinning, wherein air-flow
It is carried out in the pipeline closed, pipeline outer cladding insulating layer, the temperature of air-flow can be well controlled；The speed of pipeline interior air-flow
It will not only decay, but also increase with the increase of jet stream series, increase action time of the air-flow to fibrous refinement, avoid
The problem of air-flow and fiber speed difference are excessive, fibrous fracture.Fibrous refinement pipe may be designed as a straight pipeline or fibrous refinement
It manages as helical pipe, the centrifugal force generated using fiber in helix tube, further realizes that self is refined.The two of fibrous refinement pipe
It holds as straight pipeline, middle part is helical pipe, and helical pipe is seamlessly transitted with straight pipeline.Multistage injection is installed on fibrous refinement pipe
Device, first order injector are mounted on straight pipeline, and subordinate's injector soakage is more than total tolerance that higher level's injector generates.
The high-pressure air inlet of a kind of electrostatic spinning of the present invention multistage injection air-flow auxiliary device for thinning, wherein injector
After arrange once air distributor, damping flow channel, secondary gas flow distribution cavity, ensure jet stream being uniformly distributed in circumference, prevent
Fiber is tangled under the influence of circumferential speed difference.The jet stream slot outlet of injector has baffle, guides high pressure
High-temperature gas jet stream vertically, prevents radial jet to be broken the lateral shear of fiber.
A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning of the present invention, the wherein jet source of injector is high temperature
Gases at high pressure, air-flow are realized and fiber are transported by the sucking interior formation high negative pressure area at middle part during jet stream gap, suction airflow
The control of dynamic rail mark, the high-speed flow or supersonic airstream of at the same time ejector outlet refine fiber.Wherein first
Fiber smoothly can be sucked kuppe by grade injector, and subordinate's injector soakage is more than total tolerance that higher level's injector generates.
A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning of the present invention, wherein there is uniform point on fiber receiver board
The hole of cloth, while fiber is collected, air-flow realizes high-temperature gas recycling through the hole on fiber receiver board.
A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning of the present invention, wherein enclosed hood is trench structure, is fallen
Button is mounted on fiber receiver board, is prevented extraneous cold air from entering gas gathering mask, be ensure that system high negative pressure, reduce energy
Loss.
A kind of electrostatic spinning of the present invention is horn-like or golden word with multistage injection air-flow auxiliary device for thinning, wherein gas gathering mask
Tower-like, gas gathering mask is connected with suction port of compressor, ensure that the negative pressure of system, realizes the recycling of hot-air.
A kind of electrostatic spinning of the present invention is equipped with heating with multistage injection air-flow auxiliary device for thinning, wherein compressor outlet
Device according to the property of material, can adjust the temperature of hot gas.
The multistage injection air-flow auxiliary device for thinning of a kind of electrostatic spinning of the present invention, wherein pacifying on each branch pipe of calming the anger
It, can the separately adjustable jet pressure per level-one injector equipped with pressure controller.
The multistage injection air-flow auxiliary device for thinning of a kind of electrostatic spinning of the present invention, in sucking room when being worked using injector
The negative pressure gas flow of interior generation, control fiber movement locus, directional collecting fiber, using injector outlet high-speed flow even
Supersonic airstream carries out slenderizing to fiber.In thinning process, the temperature of fiber surface can be well controlled, fine
Tie up increases with the speed difference of air-flow step by step, prevents that fiber is excessive with air velocity difference and is broken.The device can realize Static Spinning
The preparation of silk superfine nano fiber, and the nanofiber quality collected is close, shape is easy to control.
Description of the drawings
Fig. 1 is a kind of multistage injection air-flow auxiliary device for thinning schematic diagram of electrostatic spinning of the present invention；
Fig. 2 is injector diagrammatic cross-section shown in FIG. 1；
Fig. 3 is injector side view semi-section schematic diagram shown in Fig. 2；
Fig. 4 is fiber receiver board schematic diagram shown in FIG. 1.
In figure：1- gas gathering masks；2- fiber receiver boards；3- enclosed hoods；4- fibrous refinement pipes；5- three-level injectors；6- two levels
Injector；7- HV generators；8- level-one injectors；9- extruders；10- nozzles；11- kuppes；12- band pore electrods
Plate；13- calms the anger branch pipe；14- heaters；15- calms the anger manifold；16- pressure-regulating valves；17- compressors；5.1- sucks room；5.2-
Baffle；5.3- jet streams gap；5.4- high-pressure air inlet；Air flow distribution tube of 5.5-；5.6- damping flow channel；5.7- bis- times
Air flow method chamber.
Specific embodiment
The present invention proposes a kind of electrostatic spinning with multistage injection air-flow auxiliary device for thinning.As shown in Figures 1 to 3, the device
Including gas gathering mask 1, fiber receiver board 2, enclosed hood 3, fibrous refinement pipe 4, level-one injector 8, two level injector 6, high-pressure electrostatic
Generator 7, three-level injector 5, extruder 9, nozzle 10, kuppe 11, electrode plate with holes 12, branch pipe 13 of calming the anger, heater 14,
It calms the anger manifold 15, pressure-regulating valve 16 and compressor 17.Fibrous refinement pipe 4 is fibre-reinforced plastic tube, is resistant to heated airflow
Temperature and pressure, fibrous refinement pipe 4 installs kuppe 11, level-one injector 8, two level from upper end to lower end successively by screw thread
Fiber collecting board 2 and gas gathering mask 1 are installed in injector 6, three-level injector 5, the outlet of 4 lower end of fibrous refinement pipe successively, and fiber is collected
Enclosed hood 3 is fixed on plate 2, gas gathering mask 1 is connected with 17 entrance of compressor, and heating is equipped on the snorkel that compressor 17 exports
Device 14, the manifold 15 that calms the anger divide for three branch pipes 13 of calming the anger, respectively with level-one injector 8, two level injector 6,5 phase of three-level injector
Even, pressure controller 16 is respectively mounted on branch pipe 13 of each calming the anger, electrode plate 12 with holes passes through fibrous refinement pipe 4, draws positioned at level-one
Between emitter 5 and two level injector 6, nozzle 10 is connected with extruder 9 and electrostatic transmitter 7, above kuppe 11.
Level-one injector 8, two level injector 6 are identical with the structure of three-level injector 5, and as shown in Figures 2 and 3, three are penetrated
Flow device all include sucking room 5.1, baffle 5.2, jet stream gap 5.3,5.4, air flow distribution tubes 5.5 of high-pressure air inlet,
Damping flow channel 5.6 and secondary gas flow distribution cavity 5.7.Sucking room 5.1 is located at the middle part of injector, in tapered cylindric, high pressure sky
Once airflow uniform distribution pipe 5.5 is arranged after gas entrance 5.4, damping flow channel 5.6 and secondary gas flow distribution cavity 5.7 ensure jet stream in circle
Week is uniformly distributed；There is baffle 5.2 before jet stream gap 5.3, guide high-temperature high-pressure air flow towards injector axial jet.
There is equally distributed hole on fiber receiver board, as shown in Figure 4.
To prevent from generating electric field interference, kuppe 11, level-one injector 8 and fibrous refinement pipe 4 use non-conductive material.
As shown in Figure 1, fibrous refinement process is as follows：Electrostatic generator 7 is formed between nozzle 10 and electrode plate with holes 12
High voltage electric field, macromolecule melt/solution eject under electric field action from nozzle 10, and level-one injector 8 is in high temperature and pressure air
Jet action under, form negative pressure field in 11 inlet of kuppe, will be in fiber sucking fibrous refinement pipe 4.Fiber passes through water conservancy diversion
Device 11 is refined for the first time into level-one injector 8, subsequently into helical pipe, is carried out self under the action of the centrifugal force and is stretched.
Under the suction function generated in secondary jets device 6, fiber smoothly enters secondary jets device 6, and the air velocity of secondary jets device is big
In the air velocity of level-one ejector, second is carried out to fiber and is refined, the high temperature gas flow of secondary jets device can also be by surface
The fiber solidified softens again, and then fiber enters in three-level ejector 5 and refines, and the speed of three-level ejector 5 is higher than two
The speed of grade ejector 6, fiber are finally deposited on fiber collecting board 2.The high temperature air sprayed from fibrous refinement pipe 4,
It under the negative-pressure sucking of compressor 17, by gas gathering mask 1, is compressed into compressor 17, then by heater 14, calms the anger total
Pipe 15, branch pipe 13 of calming the anger, pressure-regulating valve 16 enter in injector.
Claims (10)
1. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning, it is characterised in that：It is received including gas gathering mask, fiber
Plate, enclosed hood, fibrous refinement pipe, level-one injector, two level injector, HV generator, three-level injector, extruder,
Nozzle, kuppe, electrode plate with holes, branch pipe of calming the anger, heater, the manifold that calms the anger, pressure-regulating valve and compressor, fibrous refinement pipe
Kuppe, level-one injector, two level injector and three-level injector, fibrous refinement are installed successively from upper end to lower end by screw thread
Fiber collecting board, gas gathering mask are installed in the outlet of pipe lower end successively, are fixed with enclosed hood on fiber collecting board, gas gathering mask and compressor enter
Mouth is connected, and installs having heaters on the snorkel of compressor outlet, the manifold that calms the anger is divided into three branch pipes of calming the anger, and draws respectively with level-one
Emitter, two level injector, three-level injector are connected, and pressure controller is respectively mounted on branch pipe of each calming the anger, and electrode plate with holes passes through
Fibrous refinement pipe, between level-one injector and two level injector, nozzle is connected with extruder and electrostatic transmitter, is mounted on
Above kuppe.
2. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：It is fine
The pipeline outer cladding insulating layer of dimension refinement pipe, fibrous refinement pipe are helical pipe.
3. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：One
Grade injector, two level injector are identical with the structure of three-level injector, and three ejectors all include sucking room, baffle, jet stream
Gap, high-pressure air inlet, an air flow distribution tube, damping flow channel and secondary gas flow distribution cavity, sucking room are located at injector
Once airflow uniform distribution pipe, damping flow channel and secondary gas flow distribution cavity in tapered cylindric, are arranged in middle part after high-pressure air inlet
Ensure jet stream being uniformly distributed in circumference；There is baffle before jet stream gap, guide high-temperature high-pressure air flow towards injector axial jet.
4. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：One
The jet source of grade injector, two level injector and three-level injector is high temperature and high pressure gas.
5. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：It is fine
There is equally distributed hole on dimension receiver board.
6. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：It is close
Cover is closed as trench structure, back-off is mounted on fiber receiver board.
7. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：Collection
Gas hood is horn-like or pyramid shape, and gas gathering mask is connected with suction port of compressor.
8. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：Pressure
Contracting machine outlet installation having heaters.
9. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：Often
Pressure controller is mounted on one branch pipe of calming the anger, it can the separately adjustable jet pressure per level-one injector.
10. a kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning according to claim 1, it is characterised in that：
Kuppe, level-one injector and fibrous refinement pipe use non-conductive material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721591308.3U CN207452309U (en) | 2017-11-24 | 2017-11-24 | A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721591308.3U CN207452309U (en) | 2017-11-24 | 2017-11-24 | A kind of multistage injection air-flow auxiliary device for thinning of electrostatic spinning |
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| CN207452309U true CN207452309U (en) | 2018-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723814A (en) * | 2017-11-24 | 2018-02-23 | 北京化工大学 | A kind of electrostatic spinning aids in device for thinning with multistage injection air-flow |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723814A (en) * | 2017-11-24 | 2018-02-23 | 北京化工大学 | A kind of electrostatic spinning aids in device for thinning with multistage injection air-flow |
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