CN219586266U - Multi-needle electrostatic spinning electric field improving device - Google Patents
Multi-needle electrostatic spinning electric field improving device Download PDFInfo
- Publication number
- CN219586266U CN219586266U CN202320356733.3U CN202320356733U CN219586266U CN 219586266 U CN219586266 U CN 219586266U CN 202320356733 U CN202320356733 U CN 202320356733U CN 219586266 U CN219586266 U CN 219586266U
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- Prior art keywords
- needle
- electric field
- spinning
- metal disc
- needles
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- 230000005684 electric field Effects 0.000 title claims abstract description 31
- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 claims abstract description 70
- 238000009987 spinning Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 238000001523 electrospinning Methods 0.000 claims 7
- 239000000835 fiber Substances 0.000 abstract description 23
- 239000007921 spray Substances 0.000 abstract description 9
- 239000012528 membrane Substances 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The utility model discloses a multi-needle electrostatic spinning electric field improving device, which comprises a spinning nozzle, wherein a plurality of needles are arranged on the spinning nozzle, and the needles are distributed in a rectangular array or a circular array; the side, away from the needle head, of the spray head is a liquid injection side, and the end, away from the liquid injection side, of the needle head is a liquid outlet side; the spray head is provided with a metal disc which is positioned on one side of the needle head on the spray head; the metal disc is sleeved on the needle. According to the utility model, the metal disc is adopted at the needle head of the spray head to restrict the jet flow of the outermost spinning needle head, so that the stable spinning jet flow is achieved, and the consistency of the fiber membrane is improved.
Description
Technical Field
The utility model relates to the technical field of electrostatic silk prevention, in particular to a multi-needle electrostatic spinning electric field improving device.
Background
The electrostatic spinning is a method for preparing polymer solution or melt into superfine fiber by using high-voltage static electricity, the working principle of the electrostatic spinning is that a high-voltage electric field is established between a spray head and a collecting plate, so that the spray head is electrified in an induction way or is electrified directly, the melt or the solution at the tip end of the bottom of the spray head is electrified or is polarized to receive the strong stretching action of electric field force, when the electric field force received by the spray head exceeds viscous resistance and surface tension, the polymer melt or the solution forms jet flow to be sprayed on the collecting plate, and the jet flow is cooled and solidified or the solvent volatilizes to form fiber.
In the traditional single-needle electrostatic spinning technology, one needle produces one fiber, and the larger the electric field intensity is, the faster the jet flow is, and the diameter of the fiber is reduced. In order to improve the production efficiency, a method of multi-needle array arrangement can be adopted, but in the practical process, the electric field forces born by the needles arranged in the array at different positions are found to be different, and in general, the peripheral needles are subjected to stronger electric field to form stronger electric field forces, because the tip effect and electrostatic shielding effect of the electrode plates are combined to cause, the charge density at the edge of the electrode plates is high and the field strength is high due to the tip effect, so that the field strength at the corresponding needles distributed at the edges is high and the field strength at the needles distributed at the opposite inner sides is low. In addition, there is some electrostatic shielding effect, and the outer needle produces certain electrostatic shielding effect to the needles distributed inside, and electrostatic shielding means to protect the outer casing from the outer electric field. Therefore, the uneven electric field causes problems such as uneven fiber distribution and fiber diameter, and the like, which affect the quality of the final product.
The current solution to the problem is to connect a conical or semi-ellipsoidal auxiliary electrode at the spinning needle to restrict the distribution range of electrostatic field, thus realizing fixed-point deposition of fiber. Or a metal ring connected with a high-voltage electrostatic generator is sleeved at the tip end of the spinning needle head so as to improve electrostatic shielding effect and improve consistency of fiber film thickness and fiber diameter. The technology can control spinning jet flow and improve consistency of the fiber membrane, but has single function, needs to be additionally connected with a high-voltage power supply, has complex spinning needle head device, needs to specially customize the spinning needle head, and increases production cost.
Disclosure of Invention
The utility model provides a multi-needle electrostatic spinning electric field improving device, which solves the problem of unbalanced multi-needle electrostatic spinning electric field in the prior art.
The utility model provides a multi-needle electrostatic spinning electric field improving device, which comprises a spinning nozzle, wherein a plurality of needles are arranged on the spinning nozzle, and the needles are distributed in a rectangular array or a circular array;
the spinning nozzle is provided with a metal disc, and the metal disc is positioned at one side of the needle head;
the metal disc is sleeved on the needle head.
Further, the area of the metal disc is larger than the arrangement area of the needles on the spinning nozzle.
Further, the outermost spinning needle is 2-3 cm away from the edge of the metal disc.
Further, the metal disc is positioned at the root of the needle head.
Further, the needles are connected in series through wires.
Further, the wire is a metal wire.
Further, the side, far away from the needle head, of the spinning nozzle is a liquid injection side of the spinning nozzle, and one end, far away from the liquid injection side, of the needle head is a liquid outlet side; the metal wire is positioned on one side of the liquid outlet side of the needle head of the metal disc, and the metal wire is arranged close to the metal disc.
Further, the metal wire is a copper wire.
Further, the metal disc is shaped to accommodate the needle arrangement.
Further, the metal disc is one of round, square and rectangular.
According to the utility model, the outermost spinning needle jet is restrained by the metal disc at the needle, so that stable spinning jet is achieved, and the consistency of the fiber membrane is improved.
Drawings
FIG. 1 is a schematic side view of the present utility model;
FIG. 2 is a schematic diagram of the front structure of the present utility model;
fig. 3 is a schematic diagram of electric field improvement according to an embodiment of the present utility model.
1. A spray head; 2. a needle; 3. a liquid injection side; 4. a liquid outlet side; 5. a metal plate; 6. a wire.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The embodiment discloses a multi-needle electrostatic spinning electric field improving device, as shown in fig. 1 and 2, the multi-needle electrostatic spinning electric field improving device comprises a spinning nozzle 1, wherein a plurality of needles 2 are arranged on the spinning nozzle 1, and the needles 2 are distributed in a rectangular array or a circular array;
the side, away from the needle head 2, of the spinning nozzle 1 is a liquid injection side 3, and the end, away from the liquid injection side 3, of the needle head 2 is a liquid outlet side 4;
a metal disc 5 is arranged on the spinning nozzle 1, and the metal disc 5 is positioned on one side of a needle head 2 on the nozzle 1;
the metal disc 5 is sleeved on the needle head 2.
The principle of the design is similar to that of a parallel plate capacitor, and the metal disc 5 is positively charged in connection with the spinning needle 2, so that the spinning receiving device is negatively charged, and the electric field distribution of the metal disc 5 is similar to that of the parallel plate capacitor, as shown in fig. 3.
In the embodiment, the metal disc 5 is adopted at the needle head 2 of the spinning nozzle 1 to restrict the jet flow of the outermost spinning needle head 2, so that the stable spinning jet flow is achieved, and the consistency of the fiber membrane is improved.
Optionally, the area of the metal disc 5 is larger than the arrangement area of the needles 2 on the spinning nozzle 1.
Wherein the outermost spinning needle head 2 is 2-3 cm away from the edge of the metal disc 5.
Specifically, a metal disc 5 with the area larger than the total area of the spinning needles 2 is cut out according to the number of the spinning needles 2, the outermost spinning needles 2 are 2-3 cm away from the edge of the metal disc, and the metal disc 5 is sleeved on the spinning needles 2.
Optionally, the metal disc 5 is located at the root of the needle 2.
Optionally, the needles 2 are connected in series through wires;
in this embodiment, the spinning needles 2 are connected in series by using a wire to stabilize the voltage between the needles 2. The accessories at the needle head 2 do not need to be additionally connected with a voltage electrostatic generator and a high-voltage power supply, thereby reducing the energy consumption and saving the production cost
Optionally, the wire is a wire 6.
Optionally, the wire 6 is located at one side of the needle 2 of the metal disc 5, and the wire 6 is disposed close to the metal disc 5.
Wherein the metal wire 6 is a copper wire.
Specifically, cutting multi-strand metal copper wires with proper lengths according to the number of the needles 2 and the distribution state of the needles 2, taking one strand of the multi-strand metal copper wires to be sequentially wound on each spinning needle 2, so that the multi-strand needles 2 are connected with each other; the metal wire 6 and the metal disc 5 have no interval, and the metal wire 6 is close to the metal disc 5 to play a role in balancing voltage.
The embodiment can adopt waste multi-strand copper wires, one of the wires is taken, the metal disc can be cut by adopting waste metal sheets, the whole process is simple, the DIY manufacturing can be carried out by oneself, the special customization of the spinning needle head 2 and parts thereof is not needed, the adopted raw materials are wide in sources, and the production cost is saved.
Optionally, the metal disc 5 is round, square or rectangular, and has a shape corresponding to the arrangement of the needles 2.
During installation, cutting out a metal disc 5 with the area larger than the total length of the spinning needles 2 according to the number of the spinning needles 2, and sleeving the metal disc on the spinning needles 2, wherein the distance between the outermost spinning needles 2 and the edge of the metal disc is 2-3 cm;
cutting a plurality of strands of metal copper wires with proper lengths according to the number of the needles 2 and the distribution state of the needles 2, taking one strand of the metal copper wires to be wound on each spinning needle 2 in turn, so that the plurality of needles 2 are connected with each other;
and (5) spinning is started normally.
The spinning jet flow is dispersed when the metal disc 5 is not added, the jet flow at the tip end of the needle head 2 is not parallel, and the jet flow at the tip end of the needle head 2 at the outermost side is inclined outwards; after the metal disc 5 is added, jet flows among the needles 2 are parallel to each other, and the outward-oblique phenomenon of the jet flow at the tip of the outer needle 2 does not occur, so that the jet flow stability of the multi-needle 2 during spinning can be effectively improved by adding the metal disc 5.
In order to verify the consistency of the fiber films before and after the metal plate 5 is added, a 9% PVA solution is configured, two fiber films are spun by adopting the same parameters, the metal plate 5 is not added when the first fiber film is spun, the metal plate 5 is added when the second fiber film is spun, other parameters are the same except whether the metal plate 5 is added, the thickness of different positions of the two fiber films is measured by using a ten-thousandth ruler, 20 points are respectively taken by each fiber film, and the obtained data are shown in table 1.
Table 1 comparison of fiber film thickness before and after addition of Metal disc 5
As can be seen from Table 1, the uniformity of the thickness of the fiber film was poor, and the thickness was as poor as 8.9 μm when no metal plate 5 was added; after the metal disc 5 is added, the thickness uniformity of the thickness of the fiber film is obviously improved, and the thickness is extremely poor and is only 1.8 mu m. It can be seen that the addition of the metal disc 5 can effectively improve the consistency of the fibrous membrane.
The utility model solves the problem of poor fiber consistency caused by the turbulence of jet flows of all the needles and the inconsistent flow of all the jet flows due to the mutual influence of electric fields among the needles during the electrostatic spinning of multiple needles, and improves the stability of the electrostatic spinning process; the production cost is saved; the energy consumption is reduced.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present utility model after reading the present specification, and these modifications and variations do not depart from the scope of the utility model as claimed in the pending claims.
Claims (10)
1. The multi-needle electrostatic spinning electric field improving device is characterized by comprising a spinning nozzle, wherein a plurality of needles are arranged on the spinning nozzle, and the needles are distributed in a rectangular array or a circular array;
the spinning nozzle is provided with a metal disc, and the metal disc is positioned at one side of the needle head;
the metal disc is sleeved on the needle head.
2. The multi-needle electrospinning electric field enhancement device of claim 1, wherein the metal disc has an area greater than the area of the needle arrangement on the spinning nozzle.
3. The multi-needle electrostatic spinning electric field improving device according to claim 2, wherein the outermost spinning needle is 2-3 cm away from the edge of the metal disc.
4. The multi-needle electrospinning electric field enhancement device of claim 1, wherein the metallic disc is positioned at the root of the needle.
5. The multi-needle electrospinning electric field improvement device of claim 1, wherein the needles are connected in series by wires.
6. The multi-needle electrospinning electric field enhancement device of claim 5, wherein the conductive wire is a wire.
7. The multi-needle electrostatic spinning electric field improving device according to claim 6, wherein a side of the spinning nozzle far from the needle is a liquid injection side of the spinning nozzle, and one end of the needle far from the liquid injection side is a liquid outlet side; the metal wire is positioned on one side of the liquid outlet side of the needle head of the metal disc, and the metal wire is arranged close to the metal disc.
8. The multi-needle electrospinning electric field enhancement device of claim 7, wherein the metal wire is a copper wire.
9. A multi-needle electrospinning electric field improving device as in any of claims 1-8, wherein the metallic disc is shaped to conform to the needle arrangement.
10. The multi-needle electrospinning electric field improvement device of claim 9, wherein the metallic disc is one of circular, square, and rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320356733.3U CN219586266U (en) | 2023-02-28 | 2023-02-28 | Multi-needle electrostatic spinning electric field improving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320356733.3U CN219586266U (en) | 2023-02-28 | 2023-02-28 | Multi-needle electrostatic spinning electric field improving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219586266U true CN219586266U (en) | 2023-08-25 |
Family
ID=87692911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320356733.3U Active CN219586266U (en) | 2023-02-28 | 2023-02-28 | Multi-needle electrostatic spinning electric field improving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219586266U (en) |
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2023
- 2023-02-28 CN CN202320356733.3U patent/CN219586266U/en active Active
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