CN110205686B - Polymer injection mechanism for electrostatic spinning nanofiber - Google Patents
Polymer injection mechanism for electrostatic spinning nanofiber Download PDFInfo
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- CN110205686B CN110205686B CN201910571111.0A CN201910571111A CN110205686B CN 110205686 B CN110205686 B CN 110205686B CN 201910571111 A CN201910571111 A CN 201910571111A CN 110205686 B CN110205686 B CN 110205686B
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- polymer
- needle
- nozzle
- sprayer
- spinning
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
-
- 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
-
- 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
Abstract
The invention discloses a polymer injection mechanism for electrostatic spinning nano-fiber, which comprises a polymer supply mechanism and a spinning needle, wherein the polymer supply mechanism comprises a polymer storage tank, a metering pump, a quantitative supply pipe and a polymer supply pipeline, the spinning needle comprises a nozzle tube body and a detachable needle unit, and a nozzle pipeline, a nozzle distributor and a nozzle inner cavity are arranged in the nozzle tube body The condition of blocking the needle head realizes rapid and stable spinning, can effectively improve the spinning efficiency and improve the spinning uniformity.
Description
Technical Field
The invention relates to the technical field of nanofiber production, in particular to a polymer injection mechanism for electrostatic spinning nanofibers.
Background
The nano-fiber is mostly produced by an electrostatic spinning machine by an electrostatic spinning method.
In the electrostatic spinning process, the blended polymer solution supplies polymer to a spinning needle on an electrostatic spinning machine through a polymer injection mechanism, so that the polymer solution is sprayed out from the needle and moves in an electrostatic vertical field to carry out electrostatic spinning, and the nano-fiber is obtained.
The polymer injection mechanism of the existing electrostatic spinning machine is usually carried out in a pressure pushing mode, and polymer is supplied to an injection needle by controlling the movement of a push rod to extrude polymer solution in a pipeline. The polymer supply mode of pressure pushing often has certain defect, and its main defect lies in the precision underground, therefore leads to polymer supply volume error volume big easily, and the polymer supplies less, and effective nanofiber density, and production effect descends, and polymer supplies more, leads to the syringe needle to spray excessively easily, causes the syringe needle to block up, influences the going on of follow-up production, restricts the promotion of nanofiber production efficiency.
Disclosure of Invention
Aiming at the problems, the invention discloses a polymer injection mechanism for electrostatic spinning nano-fibers.
The specific technical scheme is as follows:
the polymer injection mechanism for the electrostatic spinning nanofiber is characterized by comprising a polymer supply mechanism and a spinning needle head, wherein the polymer supply mechanism comprises a polymer storage tank, a metering pump, a quantitative supply pipe and a polymer supply pipeline, the spinning needle head comprises a nozzle pipe body and a detachable needle head unit, the polymer storage tank is connected with the metering pump through a pipeline, the quantitative supply pipe comprises a motor, a gear reducer, a gear set and a shaft rod, and the polymer supply mechanism is connected with the spinning needle head through a pipe joint and the polymer supply pipeline and supplies polymers quantitatively for the spinning needle head.
The polymer injection mechanism for electrostatic spinning nanofibers comprises a motor, a gear reducer, a shaft rod, a bearing, a plurality of metal sealing blocks and a spiral blade, wherein the motor is connected with the gear reducer, a transmission shaft of the gear reducer is connected with the gear set and drives the shaft rod to rotate through the gear set, the shaft rod is arranged in a quantitative supply pipe, one end of the shaft rod is in sealed and rotating connection with the quantitative supply pipe through the bearing and is provided with the plurality of metal sealing blocks, the other end of the shaft rod is provided with the spiral blade, the blade is in gap sealing with the inner wall of the quantitative supply pipe, the metal sealing blocks are in gap sealing with the quantitative supply pipe, and the metering pump.
The polymer injection mechanism for the electrostatic spinning nanofiber is characterized in that a plurality of nozzle pipelines for supplying the polymer, nozzle distributors for uniformly distributing the polymer and a nozzle inner cavity for allowing the polymer to flow to the needle units are arranged in the nozzle pipe body, the number of the needle units is multiple, and the needle units are detachably, hermetically and fixedly connected with the nozzle pipe body and are uniformly distributed on the spherical end part of the nozzle pipe body.
Foretell an electrostatic spinning polymer injection mechanism for nanofiber, wherein, the shower nozzle pipeline is sharp pipeline to communicate with the inside of shower nozzle distributor, the shower nozzle distributor is hollow spherical, and the spherical first half that it is equipped with a plurality of distribution through-holes that supply the polymer circulation on the surface, it is a plurality of evenly distributed between the distribution through-hole, and communicate the shower nozzle inner chamber, the shower nozzle inner chamber is hemispherical cavity to communicate with the syringe needle unit.
The polymer injection mechanism for the electrostatic spinning nanofiber is characterized in that the nozzle pipeline, the nozzle distributor, the nozzle inner cavity and the needle head unit are sequentially communicated.
The polymer injection mechanism for the electrostatic spinning nanofiber is characterized in that the needle head unit is detachably and hermetically connected with the nozzle pipe body in an inserting, clamping or threaded connection mode.
The polymer injection mechanism for the electrostatic spinning nanofiber comprises a needle head unit and a needle tube, wherein the needle head unit is connected with a nozzle body through the connecting portion and communicated with an inner cavity of the nozzle and the needle tube, the needle tube is a hose, and a plurality of soft metal wires are embedded in the hose.
The polymer injection mechanism for the electrostatic spinning nanofiber is characterized in that the soft metal wire is in conductive connection with the connecting part, and the nozzle tube body is in conductive connection with the needle head unit.
The polymer injection mechanism for electrostatic spinning nanofiber is characterized in that the soft metal wire is one of an iron wire, a copper wire, a silver wire or an aluminum wire.
The polymer injection mechanism for the electrostatic spinning nanofiber is characterized in that the distribution through holes are in a bell mouth shape, a small opening of the bell mouth is communicated with the inside of the sprayer distributor, and a large opening of the bell mouth is communicated with the inner cavity of the sprayer.
The invention has the beneficial effects that:
the invention discloses a polymer injection mechanism for electrostatic spinning nano-fiber, which comprises a polymer supply mechanism and a spinning needle, wherein the polymer supply mechanism comprises a polymer storage tank, a metering pump, a quantitative supply pipe and a polymer supply pipeline, the spinning needle comprises a nozzle pipe body and a detachable needle unit, the nozzle pipe, a nozzle distributor and a nozzle inner cavity are arranged in the nozzle pipe body, the needle unit comprises a connecting part and a needle pipe, the needle pipe is a hose, and soft metal wires are embedded in the hose. The polymer pressure in the inner cavity of the spray head is controllable, the conditions that the polymer is violently sprayed and blocks the needle head are avoided, the rapid and stable spinning is realized, the spinning efficiency can be effectively improved, and the spinning uniformity is improved.
Drawings
FIG. 1 is a cross-sectional view of the present invention.
FIG. 2 is a cross-sectional view of the metering tube.
FIG. 3 is a cross-sectional view of a spinneret tip.
Figure 4 is a cross-sectional view of the needle unit.
The reference numbers illustrate: 1. a nozzle body; 2. a needle unit; 3. a shower head pipe; 4. a spray head distributor; 5. an inner cavity of the spray head; 6. distributing through holes; 7. a connecting portion; 8. a needle tube; 9. a soft metal wire; 10. a polymer storage tank; 11. a metering pump; 12. a quantitative supply tube; 13. a polymer supply line; 14. a motor; 15. a gear reducer; 16. a gear set; 17. a shaft lever; 18. a spinneret needle; 19. a pipe joint; 20. a bearing; 21. a metal seal block; 22. a blade.
Detailed Description
In order to make the technical solution of the present invention clearer and clearer, the present invention is further described below with reference to embodiments, and any solution obtained by substituting technical features of the technical solution of the present invention with equivalents and performing conventional reasoning falls within the scope of the present invention.
Example one
The polymer injection mechanism for the electrostatic spinning nanofiber is characterized by comprising a polymer supply mechanism and a spinning needle head, wherein the polymer supply mechanism comprises a polymer storage tank, a metering pump, a quantitative supply pipe and a polymer supply pipeline, the spinning needle head comprises a nozzle pipe body and a detachable needle head unit, the polymer storage tank is connected with the metering pump through a pipeline, the quantitative supply pipe comprises a motor, a gear reducer, a gear set and a shaft rod, and the polymer supply mechanism is connected with the spinning needle head through a pipe joint and the polymer supply pipeline and supplies polymer quantitatively for the spinning needle head.
The polymer injection mechanism for electrostatic spinning nanofibers comprises a motor, a gear reducer, a shaft rod, a bearing, a plurality of metal sealing blocks and a spiral blade, wherein the motor is connected with the gear reducer, a transmission shaft of the gear reducer is connected with the gear set and drives the shaft rod to rotate through the gear set, the shaft rod is arranged in a quantitative supply pipe, one end of the shaft rod is in sealed and rotating connection with the quantitative supply pipe through the bearing and is provided with the plurality of metal sealing blocks, the other end of the shaft rod is provided with the spiral blade, the blade is in gap sealing with the inner wall of the quantitative supply pipe, the metal sealing blocks are in gap sealing with the quantitative supply pipe, and the metering pump.
In the embodiment, the polymer solution sprayed by the spinning needle and used for electrostatic spinning is quantitatively supplied by a polymer supply mechanism, a metering pump extracts a certain amount of the polymer solution from a polymer storage tank and sends the polymer solution into a quantitative supply pipe, the polymer solution in the quantitative supply pipe is rotationally pushed by blades on a shaft lever, when the polymer solution is rotationally pushed, a motor is started to drive a gear reducer to work, and the gear reducer transmits power through a gear set to drive the shaft lever to rotate so as to drive the blades to rotate;
the advantage of adopting this kind of rotatory propelling movement lies in, the supply precision of this kind of polymer solution will be higher than the supply precision that adopts traditional pressure propelling movement far away, can be effective, stable to spouting the supply of polymer solution of syringe needle, make the injection stability who spouts the syringe needle improve, the indirect efficient improves the nanofiber's of production quality to greatly reduced spouts the jam condition of syringe needle, reduces the maintenance cost, and reduces to work efficiency's influence.
Example two
In the spinning nozzle of the embodiment, a nozzle pipeline for supplying polymer, a nozzle distributor for uniformly distributing the polymer and a nozzle cavity for the polymer to flow to the nozzle units are arranged in the nozzle tube, the number of the nozzle units is multiple, and the multiple nozzle units are detachably and hermetically connected with the nozzle tube and uniformly distributed on the spherical end part of the nozzle tube;
wherein, the shower nozzle pipeline is sharp pipeline to with the inside intercommunication of shower nozzle distributor, the shower nozzle distributor is hollow spherical, and it is spherical first be equipped with a plurality of distribution through-holes that supply the polymer circulation on the surface, a plurality of evenly distributed between the distribution through-hole, and communicate the shower nozzle inner chamber, the shower nozzle inner chamber is hemispherical cavity to communicate with the syringe needle unit, shower nozzle pipeline, shower nozzle distributor, shower nozzle inner chamber and syringe needle unit communicate in proper order.
The spinneret needle of this embodiment, the syringe needle unit carries out spherical installation through the shower nozzle body and distributes, and it is even to distribute, when carrying out electrostatic spinning, can effectively improve spinning efficiency, during electrostatic spinning, in the polymer passes through the shower nozzle pipeline and gets into the shower nozzle distributor, evenly pour into the shower nozzle inner chamber into after distributing by the shower nozzle distributor, the shower nozzle inner chamber adopts the hemisphere setting, can guarantee the polymer pressure stability in it, and then even effectual polymer to the syringe needle unit supply to improve the spinning uniformity.
EXAMPLE III
In this embodiment, the needle unit is detachably and hermetically connected with the nozzle tube body in an inserting, clamping or threaded connection manner;
the needle head unit comprises a connecting part and a needle tube, the needle head unit is connected with the nozzle tube body through the connecting part and communicated with the nozzle inner cavity and the needle tube, the needle tube is a hose, a plurality of soft metal wires are embedded in the hose, the soft metal wires are electrically connected with the connecting part, and the nozzle tube body is electrically connected with the needle head unit;
wherein, the soft metal wire is one of iron wire, copper wire, silver wire or aluminum wire.
Present spout a syringe needle and be mostly when fixed, and be difficult for the replacement, this embodiment, improve the syringe needle unit, adopt the hose replacement, and inside implantation electrically conductive soft wire, at electrostatic spinning process, soft wire can receive the static vertical traction, and then directional nanofiber's collection direction, in the use of reality, along with the change in vertical, can adjust thereupon and spout a direction, and, adopt detachable connection, when the syringe needle blocks up, but quick replacement, because the setting of many syringe needle units, block up 30% that quantity reaches syringe needle unit total number when the syringe needle unit, just need change, thereby the time of shutting down the maintenance has been reduced, nanofiber production efficiency has been improved.
Example four
In this embodiment, the distribution through holes are in a bell mouth shape, a small opening of the bell mouth is communicated with the inside of the spray head distributor, and a large opening is communicated with the inner cavity of the spray head;
this design is also in order to stabilize the polymer pressure in the shower nozzle inner chamber, and when polymer injection volume was great, ordinary syringe needle can spray the polymer in a large number, very easily leads to the syringe needle to block up, and in this embodiment, if polymer injection volume is excessive, when the polymer passes through the distribution through-hole of horn mouth, can disperse pressure fast, and the polymer that the syringe needle unit sprayed only can increase by a small amount, can not appear the condition of violent injection.
To sum up, the invention has simple principle and reasonable design, can effectively ensure the supply precision of polymer solution, improve the injection stability of the spinning needle head, indirectly improve the quality of the produced nano fiber, improve the spinning needle head, adjust the spinning direction along with the change of the vertical field by the needle head unit, have proper quantity, reduce the time of shutdown maintenance, improve the production efficiency of the nano fiber, control the polymer pressure in the inner cavity of the nozzle, avoid the conditions of violent injection of the polymer and needle head blockage, realize rapid and stable spinning, effectively improve the spinning efficiency and improve the spinning uniformity.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. The polymer injection mechanism for the electrostatic spinning nanofiber is characterized by comprising a polymer supply mechanism and a spinning needle head, wherein the polymer supply mechanism comprises a polymer storage tank, a metering pump, a quantitative supply pipe and a polymer supply pipeline, the spinning needle head comprises a nozzle pipe body and a detachable needle head unit, the polymer storage tank is connected with the metering pump through a pipeline, the quantitative supply pipe comprises a motor, a gear reducer, a gear set and a shaft rod, and the polymer supply mechanism is connected with the spinning needle head through a pipe joint and the polymer supply pipeline and supplies polymers quantitatively to the spinning needle head;
the motor is connected with a gear reducer, a transmission shaft of the gear reducer is connected with a gear set and drives a shaft lever to rotate through the gear set, the shaft lever is arranged in a quantitative supply pipe, one end of the shaft lever is in sealed and rotary connection with the quantitative supply pipe through a bearing and is provided with a plurality of metal sealing blocks, the other end of the shaft lever is provided with a spiral blade, the blade is in gap sealing with the inner wall of the quantitative supply pipe, the metal sealing blocks are in gap sealing with the quantitative supply pipe, and the metering pump is communicated with the quantitative supply pipe and supplies polymers into the quantitative supply pipe;
the device comprises a nozzle pipe body, a plurality of needle units, a plurality of nozzle distributors and a plurality of nozzle cavities, wherein the nozzle pipe body is internally provided with a nozzle pipeline for supplying polymers, the nozzle distributors for uniformly distributing the polymers and a nozzle cavity for allowing the polymers to flow to the needle units;
the sprayer comprises a sprayer body, a sprayer pipeline, a plurality of distribution through holes, a plurality of needle units and a plurality of soft metal wires, wherein the sprayer pipeline is a linear pipeline and is communicated with the interior of the sprayer distributor, the sprayer distributor is hollow and spherical, the surface of the upper half part of the sphere in which the sprayer distributor is arranged is provided with the plurality of distribution through holes for polymer circulation, the distribution through holes are uniformly distributed and communicated with the inner cavity of the sprayer, the inner cavity of the sprayer is a hemispherical cavity and is communicated with the needle units, the sprayer pipeline, the sprayer distributor and the inner cavity of the sprayer are sequentially communicated with the needle units, the needle units are detachably and hermetically connected with the sprayer body in an inserting, clamping or threaded connection mode, each needle unit comprises a connecting part and a needle tube, each needle unit is connected with the sprayer body through the connecting part;
wherein, soft metal silk is connected with connecting portion electricity conduction, and the shower nozzle body is connected with syringe needle unit electricity conduction, soft metal silk is one of iron wire, copper wire, silver-colored silk or aluminium silk, the distribution through-hole is the horn mouth form, inside, the macrostoma intercommunication shower nozzle inner chamber of the osculum intercommunication shower nozzle distributor of its horn mouth that is.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910571111.0A CN110205686B (en) | 2019-06-28 | 2019-06-28 | Polymer injection mechanism for electrostatic spinning nanofiber |
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| CN201910571111.0A CN110205686B (en) | 2019-06-28 | 2019-06-28 | Polymer injection mechanism for electrostatic spinning nanofiber |
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| CN110205686B true CN110205686B (en) | 2021-07-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112609249A (en) * | 2021-01-08 | 2021-04-06 | 苏州大学 | Electrostatic spinning device capable of preparing core-shell structure nanofibers in batches |
| CN113718349B (en) * | 2021-09-14 | 2022-11-04 | 鑫合德(清远)智能科技发展有限公司 | Electrostatic spinning spray head structure based on capillary principle and using method thereof |
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