CN202809023U - Airflow assisted inner conical surface divided-flow type electrostatic spinning jet nozzle - Google Patents
Airflow assisted inner conical surface divided-flow type electrostatic spinning jet nozzle Download PDFInfo
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- CN202809023U CN202809023U CN2012205057873U CN201220505787U CN202809023U CN 202809023 U CN202809023 U CN 202809023U CN 2012205057873 U CN2012205057873 U CN 2012205057873U CN 201220505787 U CN201220505787 U CN 201220505787U CN 202809023 U CN202809023 U CN 202809023U
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- conical surface
- inner conical
- nozzle body
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- air
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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
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The utility model discloses an airflow assisted inner conical surface divided-flow type electrostatic spinning jet nozzle, and belongs to the field of electrostatic spinning. The jet nozzle mainly comprises a receiving plate, an electric heater device, an airflow stream guidance column, screws, an air port block, a splitter plate, a choked flow block, an inner conical surface jet nozzle body, a jet nozzle body positioning pin, a temperature sensor, an airflow shower nozzle, a grounding electrode and a high voltage electrostatic generator. A spinning medium inlet is reserved on a side face of the upper end of the inner conical surface jet nozzle body and used for being connected with a flow pass of the splitter plate. A gap between the inner conical surface jet nozzle body and the outer surface of the airflow stream guidance column is used for leading spinning media so as to enable the spinning media to be uniformly distributed on an inner conical surface of the lower end of the inner conical surface jet nozzle body. By means of the adoption of uniform distribution of an inner conical surface structure, and by using of a thinning effect of airflow on an inner conical surface to the spinning media, a high-speed stretching effect of the airflow to efflux, and a maintenance effect of hot airflow waste heat to environment temperature, the problems of fiber thinning and efficient spinning are preferably solved. Extension combination in different forms of a plurality of jet nozzles can be used as basic components of fusant electrostatic spinning industrialization.
Description
Technical field
The utility model relates to a kind of electrostatic spinning apparatus, belongs to the electrostatic spinning field.
Background technology
The electrostatic spinning process applies the high-voltage electrostatic field exactly between shower nozzle and receiving system, make charged or polarized fluid overcome surface tension and viscosity resistance under the effect of electric field force, forms jet, obtains the process of superfine fibre at dash receiver.
Along with the intensification of nanometer technology, utilize electrospun nanofibers to become one of focus of current experimental study and industrial applications.The at present research about electrostatic spinning concentrates on solution electrostatic spinning aspect mostly, aspect industrialization, also formed the integrated of a plurality of single needles and without two kinds of routes of shower nozzle solution electrostatic spinning, all just try the water in industrialization both at home and abroad at present, but single syringe needle exists shower nozzle easily to stop up and the poor defective of spinning fibre homogeneity, and latter Czech is still limited without the output of shower nozzle industrialization spinning equipment.Although the solution electrostatic spinning can spin little fiber to tens nanometers, but the use of solvent makes it a series of problem occur, causes the fiber surface defective, uses the expensive cost of solvent and the problem such as yield poorly such as the collocation problem of the recovery problem of solvent, the safety problem that is applied to biomedicine field, polymer and solvent, solvent evaporation.And melt electrostatic spinning is because relatively high to the requirement of heater, electrostatic isolation device, melt equipartition device, the fiber of spinning is relatively thick, thereby relatively less for its research, but compare with the solution method of electrostatic spinning, melt electrostatic spinning be a kind of than solution electrostatic spinning more economically, environmental protection, efficient, the safe method for preparing superfine fibre, thereby melt electrostatic spinning more is hopeful to make electrostatic spinning technique to move towards the industrialization road of essential safety.
The key issue that will solve about melt electrostatic spinning at present makes micron-sized fibre diameter be further reduced to hundred nano-scale (submicron order) exactly, and further improves its production efficiency and make its industrialization.
The people such as Naoki SHIMADA of Japan arrive utmost point low viscosity by the line laser light source of customization with film heating, prepare row's fiber, improved the output of fiber on original spot light basis, but its expensive with relative low yield still is difficult to use in mass production.
The Liberec University of Science and Technology of Czech utilizes slit equipment, has realized the preparation without the shower nozzle plurality of fibers, but its stability still needs to continue to explore, and the output of single fiber is very low.
Mentioned the device of realizing the non-woven superfine fibre of method of electrostatic spinning suitability for industrialized production in the US Patent No. 6616435.But, in this patent, also come with some shortcomings.What describe in this patent mainly is the solution method of electrostatic spinning, and the melt electrostatic spinning method is just mentioned roughly, does not provide concrete scheme and device that the melt electrostatic spinning method is produced nonwoven material.
US Patent No. 20090121379A1 has proposed electric auxiliary melting and spraying with the auxiliary Electrospun of hot blast and has proposed the high-speed stretch of hot-air and the unstable refining effect of electric field force are combined, blow the effluxvelocity that the effect of drawing has improved individual thread by hot blast, the again effect of additional electrical field force, so that fibre fineness has reached about 200nm, but the shower nozzle that uses in this patent remains the single spraying head, improvement to the sub-thread jet, and embodiment is only for the solution spinning, melt spinning has only proposed method, still has its limitation for industrial applications.
Mentioned the umbrella shape shower nozzle among the Chinese invention patent CN201010556163.X, utilize pyramidal structure well sub-thread stream to be dispersed into multiple flow uniformly, solved a mass difficult problem, but the average speed of melt jet is still less than 2m/s, be far smaller than the jet average speed of up to a hundred meters of meltblown fibers per seconds, limited the output of melt electrostatic spinning.
The utility model content
The utility model proposes the auxiliary inner conical surface shunting electrostatic spinning nozzle of air-flow, the shunting by this nozzle inner pyramidal face can realize that single-nozzle produces the function of plurality of fibers, has reduced single spraying pin difficulty of processing, has realized the precise and stable control of nozzle temperature; The booster action of while center divergence expression jet-impingement, realized thin to cutting of spinning medium on the inner conical surface, on fluidic paths, the acceleration of jet stretched and to the indirectly control of fluidic paths temperature, effectively realize the refinement of fiber, improved the efficient of single-nozzle electrostatic spinning.
For the technical scheme that realizes above-mentioned functions is, air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, mainly comprise dash receiver, electric heater unit, the air flow guiding post, screw, the gas interface block, flow distribution plate, choker bar, the inner conical surface nozzle body, the nozzle body alignment pin, temperature sensor, the air-flow shower nozzle, earth electrode, HV generator, dash receiver is fixed on the below that certain distance is arranged with inner conical surface nozzle body spray silk edge, the inner conical surface nozzle body is located and is fixedly connected with flow distribution plate by the nozzle body alignment pin, the air flow guiding post is arranged in the endoporus of inner conical surface nozzle body and flow distribution plate, air flow guiding post and flow distribution plate tight fit, the cylinder hole forms the gap in air flow guiding outer surface of column and the inner conical surface nozzle body, and melt flows in the gap; Choker bar is enclosed within air flow guiding post outside, and cooperate with inner conical surface nozzle body endoporus, be that the air flow guiding post is installed with one heart by choker bar and inner conical surface nozzle body, the oblique spinning medium entrance that communicates with inner conical surface nozzle body inner cylinder face that has on inner conical surface nozzle body and the plane that flow distribution plate contacts, have the flow distribution plate runner on the flow distribution plate, spinning medium entrance and flow distribution plate runner communicate; On the gas interface block gas access is arranged, the gas access communicates with air flow guiding post endoporus, and the gentle interface block of flow distribution plate is connected by screw; Be threaded connection the air-flow shower nozzle in air flow guiding post lower end, the air-flow shower nozzle is directed to air-flow on the spinning medium on the inner conical surface by a plurality of equal qi-emitting holes, plays the effect to spinning medium fluid attenuate and insulation; Dash receiver connects HV generator, and the inner conical surface nozzle body links to each other with earth electrode, and under the electric field force effect that two electrodes are set up, the spinning medium fluid forms multiple jets and deposits on the dash receiver; On flow distribution plate, inner conical surface nozzle body, gas interface block, electric heater unit and temperature sensor are set respectively, play the accurate temperature controlling effect.The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, inner conical surface nozzle body upper side leaves the spinning medium entrance, in order to connect with the flow distribution plate runner, gap between inner conical surface nozzle body and the air flow guiding outer surface of column is used for the guiding spinning medium, make on its inner conical surface that is evenly distributed to inner conical surface nozzle body lower end, inner conical surface in inner conical surface nozzle body lower end has certain tapering, smooth surface, and conical surface lower end becomes certain tip.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, even distribution guiding gutter on the inner conical surface of inner conical surface nozzle body lower end, or be used for water conservancy diversion at the silk brush that inner conical surface nozzle body lower edge arranges prolongation, these structures all are conducive to melt and evenly distribute and drainage, tip in the inner conical surface lower end of inner conical surface nozzle body lower end is conducive to form the gathering of electric charge on spinning medium, be conducive to form in its vicinity closeer electric field line distribution, the guiding jet.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, the coaxial inner conical surface nozzle body inner chamber that is installed in of its air flow guiding post, gas flow temperature can be regulated, replaceable air-flow shower nozzle in air flow guiding post lower end, air-flow shower nozzle side face a plurality of air stream outlets of evenly arranging, air-flow shower nozzle length and opening direction can be regulated according to process requirements, the air-flow shower nozzle of different length can be delivered to air-flow the different height and position of inner conical surface, the angle of the equal qi-emitting hole in air-flow shower nozzle lower end can be so that air-flow be sprayed onto the diverse location of inner conical surface, and air-flow can carry out spinning medium in various degree attenuate in the muzzle velocity of air-flow shower nozzle.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, its heater can be electric heater unit, also can pass through air-flow or heated fluid stream medium indirect, by temperature sensor spray nozzle device is carried out accurate temperature control, same nozzle, also can be divided into a few part warm areas, realize the multistage temperature control, so that melt obtains optimum temperature control.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, can directly give the spinning medium entrance reinforced, as the independent spinning of single-nozzle, also can melt be joined flow distribution plate by extruder and melt metering pump, flow distribution plate carries out the batch spinning with even form more than a minute by a plurality of nozzles, and wherein the flow distribution plate runner is connected the spinning medium entrance and is connected with inner conical surface nozzle body side.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, its gas interface block is installed by screw in the flow distribution plate upper end, is used for supplying with the air-flow with design temperature, if the solution electrostatic spinning, supply with the normal temperature air-flow, play fluid attenuate and auxiliary drawing-off effect; If melt electrostatic spinning; can use high temperature gas flow; play the effect to melt insulation and raising fluidic paths temperature and jet jet velocity; the gas that uses can be air or other inert gases; inert gas can reduce the electrostatic interference that air ionization causes, also can play a protective role to spinning medium.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, its spinning medium choker bar is installed on the runner entrance upper end of inner conical surface nozzle body, prevent that spinning medium from upwards flowing, also play simultaneously the positioning action to the air flow guiding post, guarantee the homogeneous of spinning medium runner circular gap.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, its earth electrode is used for connecting zero potential point, dash receiver connects HV generator High voltage output terminal, after consisting of electrostatic spinning system, form the high-voltage electrostatic field with HV generator, when nozzle used insulating materials, high-field electrode can connect nozzle, but dash receiver ground connection.
The utility model air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, adopt the even shunting of inner conical surface structure, utilize air-flow on the inner conical surface to the thinning of spinning medium, air-flow to the high-speed stretch effect of jet, the thermal current waste heat maintenance effect to environment temperature, solved well the problem of fibrous refinement and high-efficient spinning, especially in melt electrostatic spinning mass device, this structure can be used as the spinning-nozzle unit, realize the expansion combination that a plurality of nozzles are multi-form, as the infrastructure component of melt electrostatic spinning industrialization.
Description of drawings
Fig. 1 is the cross-sectional schematic of the auxiliary inner conical surface shunting electrostatic spinning nozzle of the utility model air-flow.
Fig. 2 is the enlarged diagram of inner conical surface and the local A of air-flow shower nozzle in the auxiliary inner conical surface shunting electrostatic spinning nozzle of the utility model air-flow.
Among the figure: the 1-dash receiver; The 2-jet; The 3-inner conical surface; The 4-electric heater unit; 5-air flow guiding post; 6-spinning medium entrance; 7-flow distribution plate runner; The 8-screw; The 9-air flow inlet; 10-gas interface block; The 11-flow distribution plate; The 12-choker bar; 13-nozzle body positioning pin; 14-inner conical surface nozzle body; The 15-temperature sensor; 16-air-flow shower nozzle; The 17-earth electrode; The 18-HV generator; The equal qi-emitting hole of 19-;
The specific embodiment
The auxiliary inner conical surface shunting electrostatic spinning nozzle of the utility model air-flow as depicted in figs. 1 and 2, mainly comprise dash receiver 1, electric heater unit 4, air flow guiding post 5, screw 8, gas interface block 10, flow distribution plate 11, choker bar 12, inner conical surface nozzle body 14, nozzle body alignment pin 13, temperature sensor 15, air-flow shower nozzle 16, earth electrode 17, HV generator 18, dash receiver 1 is fixed on the below that certain distance is arranged with inner conical surface nozzle body 14, inner conical surface nozzle body 14 is located and is fixedly connected with flow distribution plate 11 by nozzle body positioning pin 13, connect spinning medium entrance 6 and flow distribution plate runner 7, flow distribution plate 11 gentle interface block 10 connect by screw 8, air flow guiding post 5 is installed with one heart by choker bar 12 and inner conical surface nozzle body 14, be threaded connection air-flow shower nozzle 16 in air flow guiding post 5 lower ends, air-flow shower nozzle 16 acts on thermal current on the spinning medium that is directed on the inner conical surface 3 by a plurality of equal qi-emitting holes 19, play the effect to spinning medium attenuate and insulation, dash receiver 1 connects HV generator 18, inner conical surface nozzle body 14 connects earth electrode 17, under the electric field force effect that two electrodes are set up, spinning medium forms multiple jets 2 and deposits to dash receiver 1, at flow distribution plate 11, inner conical surface nozzle body 14, electric heater unit 4 and temperature sensor 15 are set respectively on the gas interface fast 10, play the accurate temperature controlling effect.
An embodiment as shown in Figure 1, inner conical surface nozzle body 14 lower end inner conical surfaces 3 semi-cone angle are 37 °, inner conical surface nozzle body 14 high 60mm, air flow guiding post 5 internal diameters are 8mm, 4 pairs of inner conical surface nozzle body 14 accurate temperature controllings of electric heater unit, flow distribution plate runner 7 diameters are 6mm, spinning medium entrance 6 diameters are 4mm, gap 0.5mm between inner conical surface nozzle body 14 and air flow guiding post 5 outer surfaces, the water conservancy diversion that is used for spinning medium, inner conical surface nozzle body 14 and flow distribution plate 11 usefulness nozzle body positioning pins 13 location, the gas interface block 10 that air-flow is supplied with is used the interface of DN15, utilizing flow distribution plate 11 to add along inner conical surface nozzle body 14 side spinning medium entrances 6 during spinning melts and sprays with polypropylene (PP6315) melt, 200 ℃ of melt temperatures, melt forms the thick melt layer of 1mm by the gap between inner conical surface nozzle body 14 and air flow guiding post 5 outer surfaces at inner conical surface 3, at air-flow shower nozzle 16 72 hole diameters being arranged is under 300 ℃ the hot air acting of 300m/s of equal qi-emitting hole ejection of 0.2mm, melt layer has been thinned to 0.25-0.5mm, be adjusted into 13cm with inner conical surface nozzle body 14 lower ends and dash receiver 1 spacing this moment, HV generator 18 powers up 50kv, under electric field force and hot air flow effect, the ultra-fine jet of 60-80 root deposits at the HV generator dash receiver along the ejection of inner conical surface 3 tangential directions.Spinning this moment jet 2 average speeds can reach 10-20m/s, and fibre diameter can reach about 500nm, and spinning efficiency is about 350g/h.
Claims (3)
1. air-flow is assisted inner conical surface shunting electrostatic spinning nozzle, it is characterized in that: mainly comprise dash receiver, electric heater unit, the air flow guiding post, screw, the gas interface block, flow distribution plate, choker bar, the inner conical surface nozzle body, the nozzle body alignment pin, temperature sensor, the air-flow shower nozzle, earth electrode, HV generator, dash receiver is fixed on the below that certain distance is arranged with inner conical surface nozzle body spray silk edge, the inner conical surface nozzle body is located and is fixedly connected with flow distribution plate by the nozzle body alignment pin, the air flow guiding post is arranged in the endoporus of inner conical surface nozzle body and flow distribution plate, air flow guiding post and flow distribution plate tight fit, the cylinder hole forms the gap in air flow guiding outer surface of column and the inner conical surface nozzle body, and melt flows in the gap; Choker bar is enclosed within air flow guiding post outside, and cooperate with inner conical surface nozzle body endoporus, the oblique spinning medium entrance that communicates with inner conical surface nozzle body inner cylinder face that has on inner conical surface nozzle body and the plane that flow distribution plate contacts, have the flow distribution plate runner on the flow distribution plate, spinning medium entrance and flow distribution plate runner communicate; On the gas interface block gas access is arranged, the gas access communicates with air flow guiding post endoporus, and the gentle interface block of flow distribution plate is connected by screw; Be threaded connection the air-flow shower nozzle in air flow guiding post lower end, the air-flow shower nozzle is directed to air-flow on the spinning medium on the inner conical surface by a plurality of equal qi-emitting holes; Dash receiver connects HV generator, and the inner conical surface nozzle body links to each other with earth electrode, and under the electric field force effect that two electrodes are set up, the spinning medium fluid forms multiple jets and deposits on the dash receiver; On flow distribution plate, inner conical surface nozzle body, gas interface block, electric heater unit and temperature sensor are set respectively; Inner conical surface nozzle body upper side leaves the spinning medium entrance, in order to connect with the flow distribution plate runner, gap between inner conical surface nozzle body and the air flow guiding outer surface of column is used for the guiding spinning medium, make on its inner conical surface that is evenly distributed to inner conical surface nozzle body lower end, inner conical surface in inner conical surface nozzle body lower end has certain tapering, smooth surface, conical surface lower end becomes certain tip.
2. the auxiliary inner conical surface shunting electrostatic spinning nozzle of air-flow according to claim 1 is characterized in that: even distribution guiding gutter on the inner conical surface of inner conical surface nozzle body lower end, or be used for water conservancy diversion at the silk brush that inner conical surface nozzle body lower edge arranges prolongation.
3. air-flow according to claim 1 is assisted inner conical surface shunting electrostatic spinning nozzle, and it is characterized in that: gas flow temperature can be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205057873U CN202809023U (en) | 2012-09-28 | 2012-09-28 | Airflow assisted inner conical surface divided-flow type electrostatic spinning jet nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205057873U CN202809023U (en) | 2012-09-28 | 2012-09-28 | Airflow assisted inner conical surface divided-flow type electrostatic spinning jet nozzle |
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| CN202809023U true CN202809023U (en) | 2013-03-20 |
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| CN2012205057873U Withdrawn - After Issue CN202809023U (en) | 2012-09-28 | 2012-09-28 | Airflow assisted inner conical surface divided-flow type electrostatic spinning jet nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864502A (en) * | 2012-09-28 | 2013-01-09 | 北京化工大学 | Airflow assisted internal conical surface distributed electrostatic spinning nozzle |
| CN104928768A (en) * | 2015-04-08 | 2015-09-23 | 烟台森森环保科技有限公司 | Internal and external circular air assisted electrospinning nozzle unit |
| CN106626767A (en) * | 2016-12-09 | 2017-05-10 | 华中科技大学 | Airflow auxiliary electric jet printing spray-head integrated with grounding electrode |
| WO2017189438A1 (en) * | 2016-04-25 | 2017-11-02 | Cytec Industries Inc. | Spinneret assembly for spinning polymeric fibers |
| CN115821485A (en) * | 2021-06-11 | 2023-03-21 | 广东三水合肥工业大学研究院 | Preparation method of nanofiber membrane |
-
2012
- 2012-09-28 CN CN2012205057873U patent/CN202809023U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864502A (en) * | 2012-09-28 | 2013-01-09 | 北京化工大学 | Airflow assisted internal conical surface distributed electrostatic spinning nozzle |
| CN104928768A (en) * | 2015-04-08 | 2015-09-23 | 烟台森森环保科技有限公司 | Internal and external circular air assisted electrospinning nozzle unit |
| WO2017189438A1 (en) * | 2016-04-25 | 2017-11-02 | Cytec Industries Inc. | Spinneret assembly for spinning polymeric fibers |
| CN106626767A (en) * | 2016-12-09 | 2017-05-10 | 华中科技大学 | Airflow auxiliary electric jet printing spray-head integrated with grounding electrode |
| CN106626767B (en) * | 2016-12-09 | 2018-02-27 | 华中科技大学 | A kind of air-flow auxiliary EFI print shower nozzle for being integrated with grounding electrode |
| CN115821485A (en) * | 2021-06-11 | 2023-03-21 | 广东三水合肥工业大学研究院 | Preparation method of nanofiber membrane |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20140903 |
|
| RGAV | Abandon patent right to avoid regrant |