CN109594135B - Central point electrode electrostatic spinning device and spinning method - Google Patents
Central point electrode electrostatic spinning device and spinning method Download PDFInfo
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- CN109594135B CN109594135B CN201811552152.7A CN201811552152A CN109594135B CN 109594135 B CN109594135 B CN 109594135B CN 201811552152 A CN201811552152 A CN 201811552152A CN 109594135 B CN109594135 B CN 109594135B
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- sleeve
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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
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a central point electrode electrostatic spinning device and a spinning method, wherein the upper part of a second sleeve is fixedly connected with the upper part of a first sleeve, the upper part of a third sleeve is fixedly connected with the upper part of the second sleeve, a direct current channel I and a direct current channel II are arranged on the first sleeve, a direct current channel III is arranged on the second sleeve, one end of the direct current channel III is communicated with the direct current channel I, the other end of the direct current channel III is communicated with an annular channel II, the direct current channel II is communicated with the annular channel I, an insulating sleeve is arranged in the third sleeve, a lead is arranged in the insulating sleeve, the lower end of the lead is connected with a metal ball, a locking clamp sleeve is arranged at the upper end of the insulating sleeve and clamps the insulating sleeve, the lead is connected with a high-voltage electrostatic generator, the first sleeve is connected with a grounding electrode. The invention has the beneficial effect of realizing fiber deposition spraying on the surface of any object.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to a central point electrode electrostatic spinning device and a spinning method.
Background
The electrostatic spinning technology is a method for preparing polymer melt or solution into fibers by using high-voltage static electricity, requires simple equipment, and is one of the most important methods for preparing polymer nano fibers at present. The traditional solution electrostatic spinning device is characterized in that a capillary needle is connected with a high-voltage electrode, a receiving plate is grounded, melt electrostatic spinning needs to be heated to keep the temperature of a melt, a heating device needs to be additionally arranged, a spinning spray head is grounded, and the receiving plate is connected with the high-voltage electrode in a reverse connection mode. In the two wiring modes, the high-voltage electrode and the grounding electrode are respectively arranged on two sides, and the receiving device must be connected with the electrodes, so that the selection of the receiving device is greatly limited, particularly, the mode that the receiving device is connected with the high-voltage electrode needs to be connected with high-voltage static electricity, higher requirements on the insulation requirements of equipment are provided, the modes such as roller receiving and the like are difficult to realize, the fiber deposition spraying on the surface of any object cannot be realized, and the application of electrostatic spinning is limited.
Disclosure of Invention
The invention aims to provide a center point electrode electrostatic spinning device and a spinning method, wherein a high-voltage electrode and a grounding electrode of the electrostatic spinning device are organically combined, the high-voltage electrode is arranged at the center of the tip of a spinning nozzle, the tip of the spinning nozzle is inductively charged for spinning, the high-voltage electrode is close to the spinning end, the applied voltage is small under the same spinning efficiency, the overall safety of equipment can be improved, and the high-voltage electrode and the grounding electrode are arranged on the same side, so that the limitation on the receiving device to receive the electrode is removed. The invention has the beneficial effect of realizing fiber deposition spraying on the surface of any object.
The technical scheme adopted by the invention is that a second sleeve is arranged in a first sleeve, the upper part of the second sleeve is fixedly connected with the upper part of the first sleeve, the diameter difference of the middle lower part of the second sleeve and the middle lower part of the first sleeve forms an annular flow channel I, a third sleeve is arranged in the second sleeve, the upper part of the third sleeve is fixedly connected with the upper part of the second sleeve, the diameter difference of the middle lower part of the third sleeve and the middle lower part of the second sleeve forms an annular flow channel II, the first sleeve is provided with a direct flow channel I and a direct flow channel II, the second sleeve is provided with a direct flow channel III, one end of the direct flow channel III is communicated with the direct flow channel I, the other end of the direct flow channel III is communicated with the annular flow channel II, the direct flow channel II is communicated with the annular flow channel I, an insulating sleeve is arranged in the third sleeve, the insulating sleeve is made of insulating material, the insulating sleeve is in clearance fit with the third, the wire is arranged in the insulating sleeve, the lower end of the wire is connected with the small metal ball, the locking clamping sleeve is arranged at the upper end of the insulating sleeve and clamps the insulating sleeve, the wire is connected with the high-voltage electrostatic generator, the first sleeve is connected with the grounding electrode, and the heating ring is wrapped outside the first sleeve.
Further, polymer solution or melt enters a first sleeve from a fluid inlet, enters an annular flow channel I along a straight flow channel II, the circumferential uniform distribution of fluid is realized in the annular flow channel I, the uniform distribution is further realized on the conical surface at the lower end of the first sleeve, finally, the annular distribution is formed at the tip of the lower part of the first sleeve, high-speed airflow enters the first sleeve from an airflow inlet, enters an annular flow channel II along the straight flow channel I and the straight flow channel III, the circumferential uniform distribution is realized in the annular flow channel II, the high-speed ejection is carried out from the lower end of the annular flow channel II, a high-voltage electrostatic generator is opened, the adjusting voltage is 5-20kV, dozens to hundreds of jet flows are generated at the annular tip of the lower part of the first sleeve, the annular airflow avoids that superfine fibers float to the metal globules due to the electrostatic adsorption effect, meanwhile, the high-speed stretching is carried out on the generated superfine fibers, the diameter of the superfine fibers is reduced, a locking, the optimal spinning effect is achieved for melts or solutions with different viscosities, and the heating ring is used for keeping the fluidity of the melts in the first sleeve.
Drawings
FIG. 1 is a schematic view of the structure of an electrospinning apparatus.
1-an airflow inlet, 2-a first sleeve, 3-a second sleeve, 4-a third sleeve, 5-an insulating sleeve, 6-a conducting wire, 7-superfine fiber, 8-a metal ball, 9-a grounding electrode, 10-a fluid inlet, 11-a locking ferrule, 12-a high-voltage electrostatic generator, 13-a heating ring, 201-a direct current channel I, 202-a direct current channel II, 301-a direct current channel III, 302-an annular channel I, 401-an annular channel II.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
As shown in figure 1, the electrostatic spinning device of the invention is characterized in that a second sleeve 3 is arranged in a first sleeve 2, the upper part of the second sleeve 3 is fixedly connected with the upper part of the first sleeve 2, the diameter difference between the middle lower part of the second sleeve 3 and the middle lower part of the first sleeve 2 forms an annular flow passage I302, a third sleeve 4 is arranged in the second sleeve 3, the upper part of the third sleeve 4 is fixedly connected with the upper part of the second sleeve 3, the diameter difference between the middle lower part of the third sleeve 4 and the middle lower part of the second sleeve 3 forms an annular flow passage II 401, the first sleeve 2 is provided with a straight flow passage I201 and a straight flow passage II 202, the second sleeve 3 is provided with a straight flow passage III 301, one end of the straight flow passage III 301 is communicated with the straight flow passage I201, the other end of the straight flow passage III 301 is communicated with the annular flow passage II 401, the straight flow passage II 202 is communicated with the annular flow passage I302, an insulating sleeve 5 is arranged, insulating sleeve 5 and 4 clearance fit of third sleeve can slide from top to bottom along 4 internal faces of third sleeve, and inside insulating sleeve 5 was arranged in to wire 6, 6 lower extremes of wire were connected with prill 8, and 5 upper ends of insulating sleeve and chucking insulating sleeve 5 are arranged in to locking cutting ferrule 11, and wire 6 links to each other with high-voltage electrostatic generator 12, and first sleeve 2 links to each other with telluric electricity field 9, and heating collar 13 parcel is in the 2 outsides of first sleeve.
The polymer solution or melt enters a first sleeve 2 from a fluid inlet 1, enters an annular flow channel I302 along a straight flow channel II 202, is uniformly distributed in the circumferential direction of the fluid in the annular flow channel I302, is further uniformly distributed on a conical surface at the lower end of the first sleeve 2, is finally annularly distributed at the tip of the lower part of the first sleeve 2, enters the first sleeve 2 from an airflow inlet, enters an annular flow channel II 401 along a straight flow channel I201 and a straight flow channel III 301, is uniformly distributed in the circumferential direction in the annular flow channel II 401, is ejected out at a high speed from the lower end of the annular flow channel II 401, a high-voltage electrostatic generator 12 is turned on, the voltage is adjusted to be 5-20kV, tens of upper jet flows are generated at the annular tip of the lower part of the first sleeve 2, the annular airflow avoids fibers 7 from drifting to metal balls 8 due to electrostatic adsorption, and simultaneously stretches hundreds of ultrafine fibers 7, the diameter of the superfine fiber 7 is reduced, the locking cutting sleeve 11 adjusts the relative position of the metal small ball 8 and the tip end of the first sleeve 2 by adjusting the upper position and the lower position of the insulating sleeve 5, the optimal spinning effect is achieved for melts or solutions with different viscosities, and the heating ring 13 is used for keeping the fluidity of the melts in the first sleeve 2. The high-voltage electrostatic generator 12 and the grounding electrode 9 are positioned at the same side, and the superfine fibers 7 are blown to an open space by annular airflow, so that the limitation of a receiving device on electrostatic spinning equipment is thoroughly removed, and the spray type deposition of the superfine fibers 7 on the surface of any receiving device can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (2)
1. The utility model provides a central point electrode electrostatic spinning device which characterized in that: the second sleeve is arranged in the first sleeve, the upper part of the second sleeve is fixedly connected with the upper part of the first sleeve, the diameter difference of the middle lower part of the second sleeve and the middle lower part of the first sleeve forms an annular flow channel I, the third sleeve is arranged in the second sleeve, the upper part of the third sleeve is fixedly connected with the upper part of the second sleeve, the diameter difference of the middle lower part of the third sleeve and the middle lower part of the second sleeve forms an annular flow channel II, the first sleeve is provided with a direct flow channel I and a direct flow channel II, the second sleeve is provided with a direct flow channel III, one end of the direct flow channel III is communicated with the direct flow channel I, the other end of the direct flow channel III is communicated with the annular flow channel II, the direct flow channel II is communicated with the annular flow channel I, the insulating sleeve is arranged in the third sleeve, the insulating sleeve is made of insulating material, the insulating sleeve is in clearance fit with the third sleeve and can slide up and down along the inner wall surface of the, the locking clamp sleeve is arranged at the upper end of the insulating sleeve and clamps the insulating sleeve, the conducting wire is connected with the high-voltage electrostatic generator, the first sleeve is connected with the grounding electrode, and the heating ring is wrapped outside the first sleeve.
2. The spinning method of the center point electrode electrospinning device according to claim 1, characterized in that: entering a first sleeve from a fluid inlet, entering an annular flow channel I along a straight flow channel II, realizing circumferential uniform distribution of fluid in the annular flow channel I, further uniformly distributing on a conical surface at the lower end of the first sleeve, finally annularly distributing at the tip of the lower part of the first sleeve, enabling high-speed airflow to enter the first sleeve from an airflow inlet, entering the annular flow channel II along the straight flow channel I and the straight flow channel III, realizing circumferential uniform distribution in the annular flow channel II, spraying out at a high speed from the lower end of the annular flow channel II, opening a high-voltage electrostatic generator, regulating the voltage to be 5-20kV, generating dozens to hundreds of jet flows at the annular tip of the lower part of the first sleeve, preventing ultrafine fibers from floating to metal pellets due to electrostatic adsorption effect by the annular airflow, simultaneously stretching the generated ultrafine fibers at a high speed, reducing the fiber diameter, and regulating the relative position of the metal pellets and the tip of the first sleeve by regulating the upper and lower positions of, the optimal spinning effect is achieved for melts or solutions with different viscosities, and the heating ring is used for keeping the fluidity of the melts in the first sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552152.7A CN109594135B (en) | 2018-12-19 | 2018-12-19 | Central point electrode electrostatic spinning device and spinning method |
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| CN201811552152.7A CN109594135B (en) | 2018-12-19 | 2018-12-19 | Central point electrode electrostatic spinning device and spinning method |
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| CN109594135A CN109594135A (en) | 2019-04-09 |
| CN109594135B true CN109594135B (en) | 2021-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL2023086B1 (en) * | 2019-05-08 | 2020-11-30 | Innovative Mechanical Engineering Tech B V | Focussed Charge Electrospinning Spinneret |
| CN113308768B (en) * | 2021-06-22 | 2022-06-21 | 青岛科技大学 | Electrostatic spinning superfine fiber twisting device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5254297A (en) * | 1992-07-15 | 1993-10-19 | Exxon Chemical Patents Inc. | Charging method for meltblown webs |
| WO2009008146A2 (en) * | 2007-07-11 | 2009-01-15 | Panasonic Corporation | Method for manufacturing fine polymer, and fine polymer manufacturing apparatus |
| EA201070516A1 (en) * | 2007-10-23 | 2010-12-30 | ПиПиДжи ИНДАСТРИЗ ОГАЙО, ИНК. | FORMATION OF FIBER BY ELECTROMECHANICAL SPINNING |
| CN103668486B (en) * | 2013-12-03 | 2016-05-11 | 北京化工大学 | The auxiliary male cone (strobilus masculinus) type electrostatic spinning nozzle of a kind of air-flow |
| CN204455370U (en) * | 2015-02-12 | 2015-07-08 | 北京化工大学 | A kind of electrostatic spinning apparatus preparing two component composite material nanometer fiber |
| CN204690177U (en) * | 2015-04-08 | 2015-10-07 | 烟台森森环保科技有限公司 | A kind of internal and external double-circular air-flow auxiliary electrostatic spinning nozzle device |
| JP6904787B2 (en) * | 2017-05-22 | 2021-07-21 | 花王株式会社 | Electric field spinning equipment |
| CN109023561B (en) * | 2018-10-26 | 2023-08-15 | 青岛科技大学 | Electrostatic spinning device for preparing core-shell structure fibers in batches |
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