CN111364108B - Electrostatic spinning injection system - Google Patents
Electrostatic spinning injection system Download PDFInfo
- Publication number
- CN111364108B CN111364108B CN202010213534.8A CN202010213534A CN111364108B CN 111364108 B CN111364108 B CN 111364108B CN 202010213534 A CN202010213534 A CN 202010213534A CN 111364108 B CN111364108 B CN 111364108B
- Authority
- CN
- China
- Prior art keywords
- support
- liquid storage
- storage cavity
- spray head
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses an electrostatic spinning injection system which comprises a collecting device, a support, a screw rod, a fixing plate, a supporting rod and a motor. The motor is located the top of support, and the output shaft cover of motor is established in the fixed plate, and the upper end and the fixed plate of bracing piece are connected, and the lower extreme and the top of support of bracing piece are connected. The support is internally provided with a liquid storage cavity. The lower end of the liquid storage cavity is connected with a spray head, the tail end of the rotating needle is positioned in the spray head, and the collecting device is positioned below the spray head. The liquid storage cavity is provided with magnetic particles, and the liquid storage cavity is internally provided with a heat conducting rod. The bottom of the support is provided with an iron core, a coil is wound on the iron core, and the coil is electrically connected with an electric control device. The magnetic small particles in the liquid storage cavity can move continuously by changing the current of the coil to generate a changing magnetic field, so that the activity of the spinning solution is improved. The rotation of the rotating needle enables the spinning solution in the liquid storage cavity to have a Wessenberg effect, so that the shearing thinning is realized, and the problem that the spray head is blocked is solved.
Description
Technical Field
The invention relates to the technical field of electrostatic spinning, in particular to an electrostatic spinning injection system.
Background
The traditional electrostatic spinning device adopts a spinning mode that a prepared spinning solution is placed in an injection pump, and the process of manufacturing jet flow is completed by the action of a high-voltage electrostatic field. The spinning solution has certain viscosity, and when the concentration of the spinning solution is too high, the device is difficult to avoid the solute volatilized by the spinning solution from attaching to the inner wall of the nozzle and blocking the jet orifice after working for a period of time. Greatly reducing the manufacturing efficiency of jet flow.
When a high-speed rotating round rod is inserted into the non-Newtonian fluid, the non-Newtonian fluid can be subjected to the shearing force action of the high-speed rotating round rod to form a flow unit, the flow unit generates elastic restoring force, climbing rod generates a Wessenberg effect, and the Wessenberg effect can enable the spinning solution to be sheared and thinned. Shear thinning, also known as shear thinning, is a phenomenon in which the viscosity of a substance decreases with increasing shear stress when processing pseudoplastic fluids such as high polymer fluids and high spinning melts. Research shows that when a hollow nozzle is used for electrospinning direct writing of high-viscosity solution, problems of nozzle blockage, unstable and swinging jet flow, high starting voltage and the like often occur, when the rotary needle core nozzle is used for conveying the solution with the same viscosity, the viscosity is lower than that of the solution of the hollow nozzle, and as the solution quantity is gradually increased, the rotary needle core is difficult to realize Taylor cone under a high-voltage electrostatic field, and spinning can not be continuously performed.
Therefore, the prior art has the defect that the jet flow is unstable in the electrostatic spinning process, so that the problem of nozzle blockage is caused.
Disclosure of Invention
In view of the above technical problems, the present invention provides an electrospinning jet system, which eliminates the problem of nozzle clogging by the combined action of a heat conducting rod, small magnetic particles and a rotating needle.
The technical scheme of the invention is realized by the following modes:
an electrostatic spinning injection system comprises a collecting device, a support, a screw rod, a fixing plate, a supporting rod and a motor. The motor is located the top of support, and the fixed plate is located the position between motor and the support vertical distance, and the output shaft cover of motor is established in the fixed plate, and the upper end and the fixed plate of bracing piece are connected, and the lower extreme and the top of support of bracing piece are connected.
The inside stock solution chamber that is provided with of support, upper portion in the support is located to the upper end in stock solution chamber, and the diapire of support is passed to the lower extreme in stock solution chamber, and the support is coaxial with the stock solution chamber. The outer wall in stock solution chamber is provided with the cassette, and the stock solution chamber passes through the cassette card at the diapire upper surface of support.
The output shaft of the motor is connected with a rotating needle which penetrates through the support and the liquid storage cavity. The lower end of the liquid storage cavity is connected with a spray head, the tail end of the rotating needle is positioned in the spray head, and the collecting device is positioned below the spray head.
The liquid storage cavity is internally provided with magnetic small particles, the liquid storage cavity is internally provided with a heat conducting rod, one end of the heat conducting rod is connected with a power supply, the liquid storage cavity is internally provided with spinning solution, and the other end of the heat conducting rod extends into the spinning solution. The bottom of the support is provided with an iron core, a coil is wound on the iron core, and the coil is electrically connected with an electric control device.
Compared with the prior art, the invention has the advantages that: the magnetic small particles in the liquid storage cavity can move continuously by changing the current of the coil to generate a changing magnetic field, so that the activity of the spinning solution is improved. The heating degree of the heat conducting rod can control the temperature of the spinning solution before spinning, the fluidity of the spinning solution is enhanced, and the blockage of the spray head is avoided. The rotation of the rotating needle enables the spinning solution in the liquid storage cavity to have a Wessenberg effect, so that the shearing thinning is realized, and the problem that the spray head is blocked is solved.
The method is further optimized as follows: a screw rod is arranged between the rotating needle and the support, and the rotating needle and the support are coaxial.
By adopting the technical scheme, the screw rod plays a role in fixing the rotating needle, and the rotating needle is prevented from shaking in the support due to high-speed rotation.
The method is further optimized as follows: the magnetic particles are neodymium iron boron magnets.
By adopting the technical scheme, the magnetic bearing has the characteristics of small volume, light weight, strong magnetism and high cost performance, is durable and saves the use cost.
The method is further optimized as follows: the nozzle adopts a dispensing flat needle head.
By adopting the technical scheme, the precision is high, and the precision of liquid discharge can be ensured.
The method is further optimized as follows: the inner diameter of the spray head ranges from 35 mu m to 2500 mu m.
By adopting the technical scheme, the method has the characteristic of wide application range.
The method is further optimized as follows: the liquid storage cavity is sleeved at the center of the bottom of the support.
By adopting the technical scheme, the internal structure of the support is stable and does not shake when the motor works.
The method is further optimized as follows: the upper surface of the clamping seat is connected with the outer wall of the top of the liquid storage cavity in a buckling manner.
Adopt above-mentioned technical scheme, realize the cassette and push away fender stock solution chamber outer wall buckle.
The method is further optimized as follows: the small magnetic particles are uniformly distributed in the spinning solution.
By adopting the technical scheme, the magnetic force is changed to act on the magnetic small particles in the spinning solution, so that the magnetic small particles do random motion.
The method is further optimized as follows: the rotating needle extends into the spray head.
By adopting the technical scheme, the liquid can be supplied for spinning, and the stability and controllability of the Taylor cone and the jet flow formed by electrostatic spinning are improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a schematic structural diagram of the embodiment;
FIG. 3 is an enlarged view of the heat conduction rod at A in the example.
In the figure: 1-a collecting device; 2-a spray head; 3-a heat conducting rod; 4-a power supply; 5-an electric control device; 6-iron core; 7-support; 8-a card seat; 9-a screw rod; 10-a support bar; 11-a motor; 12-a rotating needle; 13-a liquid storage cavity; 14-a fixed plate; 15-magnetic small particles; 16-a high voltage electrostatic generator; 17-jet.
Detailed Description
The technical solution of the present invention is further explained with reference to fig. 1, fig. 2 and fig. 3.
An electrostatic spinning jet system, as shown in fig. 1, comprises a collecting device 1, a support 7, a screw rod 9, a fixing plate 14, a support rod 10 and a motor 11. The motor 11 is located above the support 7, the fixing plate 14 is located between the vertical distance between the motor 11 and the support 7, an output shaft of the motor 11 is sleeved in the fixing plate 14, the upper end of the support rod 10 is connected with the fixing plate 14, and the lower end of the support rod 10 is connected with the top of the support 7.
An output shaft of the motor 11 is connected with a rotating needle 12, and the rotating needle 12 penetrates through the support 7 and the liquid storage cavity 13. The lower extreme of stock solution chamber 13 is connected with shower nozzle 2, and the end of rotatory needle 12 is located shower nozzle 2, and collection device 1 is located the below of shower nozzle 2, and collection device 1's side ground connection, collection device 1 are used for the collection to spout the spinning.
Be provided with the magnetism tiny particle in the stock solution chamber 13, be provided with heat conduction pole 3 in the stock solution chamber 13, the one end of heat conduction pole 3 is connected with the power, is equipped with spinning solution in the stock solution chamber 13, and the other end of heat conduction pole 3 stretches into in the spinning solution. An iron core 6 is arranged at the bottom of the support 7, a coil is wound on the iron core 6, and the coil is electrically connected with an electric control device 5.
The hob 9 is hollow rod, the inside cover of hob 9 is equipped with rotatory needle 12, the top of rotatory needle 12 and the output shaft of motor 11, and motor 11 work drives rotatory needle 12 rotatory, and motor 11 provides power for rotatory needle 12. A screw rod 9 is arranged between the rotating needle 12 and the support 7, the center of the support 7 is in threaded connection with the outer wall of the screw rod 9, and the external top surface of the support 7 is fixedly connected with the bottom of the support rod 10. The rotating needle 12, the support 7 and the support are coaxial. The screw 9 plays a role in fixing the rotating needle 12, and prevents the rotating needle 12 from shaking in the support 7 due to high-speed rotation, thereby ensuring the precision of the spinning solution coming out of the nozzle 2.
The liquid storage cavity 13 is sleeved in the center of the bottom of the support 7, so that the internal structure of the support 7 is stable and does not shake when the motor 11 works. The spray head 2 adopts a dispensing flat needle head, has high precision, can ensure the precision of liquid discharge, has the inner diameter range of 35-2500 μm and has the characteristic of wide application range.
The outlet of the spray head 2 is opposite to the collecting device 1. The lower parts of the spray heads 2 and 16 are connected with a high-voltage electrostatic generator 16, the spray heads 2 are electrically connected with the positive electrode of the high-voltage electrostatic generator 16, the high-voltage electrostatic generator 16 is grounded, and the high-voltage electrostatic generator 16 is used for generating high-voltage static electricity for the spray heads 2. The output voltage range of the high-voltage electrostatic generator 16 is-50 kV to 50 kV.
The exterior space of stock solution chamber 13 is provided with power 4, the interior space of stock solution chamber 13 is equipped with spinning solution, the inside lateral wall of stock solution chamber 13 is provided with heat conduction pole 3, as shown in fig. 2 and 3, the one end and the power 4 electricity of heat conduction pole 3 are connected, the other end of heat conduction pole 3 stretches into spinning solution, heat conduction pole 3 makes self generate heat through being connected with power 4, and with heat transmission to spinning solution in, with control spinning solution temperature, increase spinning solution's mobility. Be provided with a plurality of magnetism tiny particle 15 in the spinning solution, a plurality of magnetism tiny particle 15 evenly distribute in the spinning solution, magnetism tiny particle 15 in this embodiment chooses for use neodymium iron boron magnetite, has characteristics small, light in weight, magnetism are strong and the price/performance ratio is high, durable has saved use cost moreover.
The top that the one end of rotatory needle 12 passed hob 9 and support 7 in proper order and motor 11's output shaft, and the other end of rotatory needle 12 passes the bottom of stock solution chamber 13 and stretches into shower nozzle 2, and motor 11 drives rotatory needle 12 rotatory, and rotatory needle 12 is at stock solution chamber 13 internal rotation, makes the spinning solution in stock solution chamber 13 the weisenberg effect appear, realizes cuting the thinization, prevents that the shower nozzle from blockking up. The rotating speed of the rotating needle 12 in this embodiment ranges from 360rpm to 4800 rpm.
The exterior space of stock solution chamber 13 still is provided with electrically controlled device 5, and the bottom surface of support 7 is provided with 4 iron cores 6, and the winding has the coil on the iron core 6, and iron core 6 is connected with electrically controlled device 5 electricity, and after circular telegram for iron core 6, the magnetic field produces around the iron core 6, through changing electric current size control magnetic field size to produce the change magnetic force, the magnetic force of change makes the magnetic particle 15 in the stock solution chamber 13 constantly move, in order to promote the activity nature of spinning solution.
The working principle is as follows: as shown in fig. 1 and 2, the motor 11 is started, the motor 11 operates, the motor 11 drives the rotary needle 12 to rotate, and the rotary needle 12 rotates. The electric connection of the spray head 2 and the high-voltage electrostatic generator 16 generates a high-voltage electrostatic field, under the action of the high-voltage electrostatic field, spinning solution droplets at the outlet of the spray head 2 form a Taylor cone, under the continuous action of the high-voltage electrostatic field, the formed Taylor cone is sprayed out from the spray head 2 in a jet flow form, and along with the volatilization of solution solutes, a jet flow 17 is formed. During spinning, the motor 11 works to drive the rotating needle 12 to rotate in the spinning solution, so that the spinning solution generates a Wessenberg effect to generate shear thinning. The electric control device 5 works simultaneously to make the electrified coil wound on the iron core 6 generate a changing magnetic force, and the changing magnetic force acts on the magnetic small particles 15 in the spinning solution to make the magnetic small particles 15 move irregularly. The heat conducting rod 3 controls the temperature in the spinning solution, so that under the simultaneous action of the heat conducting rod 3, the magnetic small particles 15 and the rotating needle 12, the phenomenon of nozzle 2 blockage caused by solute volatilization of the spinning solution is eliminated, and simultaneously, the jet flow generated by spinning is uniformly deposited on the collecting device 1.
Through put magnetic tiny particle 15 in the spinning solution in stock solution chamber 13, the winding has the circular telegram coil on the iron core 6 of stock solution chamber 13's outer end, produces the change magnetic field through changing coil current, makes the magnetic tiny particle 15 in the stock solution chamber 13 constantly move to promote the mobility of spinning solution. The heat conducting rod 3 is arranged in the liquid storage cavity 13 of the device, the temperature of the spinning solution before spinning can be controlled through the heating degree of the heat conducting rod 3, and the activity of the magnetic small particles 15 in the spinning solution is maintained. The rotating needle 12 inserted into the spinning solution in the liquid storage cavity 13 can enable the spinning solution in the liquid storage cavity 13 to have a Wessenberg effect, so that shear thinning is realized, the nozzle 2 is prevented from being blocked, and the stability of jet flow injection is improved. The rotating needle 12 extends into the spray head 2 to supply liquid for spinning, so that the stability and controllability of the Taylor cone and jet flow formed by electrostatic spinning are improved.
The present embodiment is only for explaining the invention, and it is not limited to the invention, and those skilled in the art can make modifications to the embodiment as necessary without inventive contribution after reading the present specification, but all of them are protected by the patent law within the scope of the present invention.
Claims (9)
1. An electrospinning injection system, comprising: comprises a collecting device, a support, a screw rod, a fixing plate, a supporting rod and a motor; the motor is positioned above the support, the fixed plate is positioned between the motor and the support in a vertical distance, an output shaft of the motor is sleeved in the fixed plate, the upper end of the supporting rod is connected with the fixed plate, and the lower end of the supporting rod is connected with the top of the support;
a liquid storage cavity is formed in the support, the upper end of the liquid storage cavity is located at the upper portion in the support, the lower end of the liquid storage cavity penetrates through the bottom wall of the support, and the support and the liquid storage cavity are coaxial; a clamping seat is arranged on the outer wall of the liquid storage cavity, and the liquid storage cavity is clamped on the upper surface of the bottom wall of the support seat through the clamping seat;
an output shaft of the motor is connected with a rotating needle which penetrates through the support and the liquid storage cavity; the lower end of the liquid storage cavity is connected with a spray head, the tail end of the rotating needle is positioned in the spray head, and the collecting device is positioned below the spray head;
magnetic small particles are arranged in the liquid storage cavity, a heat conducting rod is arranged in the liquid storage cavity, one end of the heat conducting rod is connected with a power supply, spinning solution is filled in the liquid storage cavity, and the other end of the heat conducting rod extends into the spinning solution; the bottom of support is provided with the iron core, winding coil on the iron core, the coil electricity is connected with electrically controlled device.
2. The electrospinning jet system of claim 1, wherein: a screw rod is arranged between the rotating needle and the support, and the rotating needle and the support are coaxial.
3. The electrospinning jet system of claim 1, wherein: the magnetic particles are neodymium iron boron magnets.
4. The electrospinning jet system of claim 1, wherein: the bottom in stock solution chamber is provided with the shower nozzle, the shower nozzle adopts the flat mouthful syringe needle of point glue.
5. The electrospinning jet system of claim 1, wherein: the inner diameter range of the spray head is 35-2500 μm.
6. The electrospinning jet system of claim 1, wherein: the liquid storage cavity is sleeved at the center of the bottom of the support.
7. The electrospinning jet system of claim 1, wherein: the upper surface of the clamping seat is connected with the outer wall of the top of the liquid storage cavity in a buckling mode.
8. The electrospinning jet system of claim 1, wherein: the small magnetic particles are uniformly distributed in the spinning solution.
9. The electrospinning jet system of claim 1, wherein: the rotating needle extends into the spray head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010213534.8A CN111364108B (en) | 2020-03-24 | 2020-03-24 | Electrostatic spinning injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010213534.8A CN111364108B (en) | 2020-03-24 | 2020-03-24 | Electrostatic spinning injection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111364108A CN111364108A (en) | 2020-07-03 |
| CN111364108B true CN111364108B (en) | 2021-10-15 |
Family
ID=71202906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010213534.8A Expired - Fee Related CN111364108B (en) | 2020-03-24 | 2020-03-24 | Electrostatic spinning injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111364108B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981559B (en) * | 2021-03-09 | 2022-09-02 | 邵阳学院 | Magnetic stirring liquid supply electrostatic spinning device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010069295A1 (en) * | 2008-12-19 | 2010-06-24 | Philipps-Universität Marburg | Electrospun polymer fibers comprising particles of bacteria-containing hydrogels |
| CN105624807A (en) * | 2016-04-01 | 2016-06-01 | 厦门大学 | Weissenberg effect-based micro-porous batch electrostatic spinning device |
| CN106637436A (en) * | 2016-11-25 | 2017-05-10 | 厦门大学 | Fluid direct writing device |
| CN108193290A (en) * | 2017-12-29 | 2018-06-22 | 厦门大学 | A kind of high-efficiency nano fibre device for spinning |
| CN109252295A (en) * | 2018-10-16 | 2019-01-22 | 浙江农林大学暨阳学院 | A kind of preparation facilities and method of low filtration resistance fiber filter film |
| CN110344125A (en) * | 2019-08-06 | 2019-10-18 | 南京工业职业技术学院 | A kind of batch electric spinning equipment and its method for preparing nano fibrous membrane |
-
2020
- 2020-03-24 CN CN202010213534.8A patent/CN111364108B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010069295A1 (en) * | 2008-12-19 | 2010-06-24 | Philipps-Universität Marburg | Electrospun polymer fibers comprising particles of bacteria-containing hydrogels |
| CN105624807A (en) * | 2016-04-01 | 2016-06-01 | 厦门大学 | Weissenberg effect-based micro-porous batch electrostatic spinning device |
| CN106637436A (en) * | 2016-11-25 | 2017-05-10 | 厦门大学 | Fluid direct writing device |
| CN108193290A (en) * | 2017-12-29 | 2018-06-22 | 厦门大学 | A kind of high-efficiency nano fibre device for spinning |
| CN109252295A (en) * | 2018-10-16 | 2019-01-22 | 浙江农林大学暨阳学院 | A kind of preparation facilities and method of low filtration resistance fiber filter film |
| CN110344125A (en) * | 2019-08-06 | 2019-10-18 | 南京工业职业技术学院 | A kind of batch electric spinning equipment and its method for preparing nano fibrous membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111364108A (en) | 2020-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103407292B (en) | A kind of composite micro-nano 3 D-printing system | |
| CN111364108B (en) | Electrostatic spinning injection system | |
| EP4071283A1 (en) | Nozzle block provided with nozzle clogging prevention means, and electrospinning device including same | |
| CN105624807B (en) | A kind of micropore batch electrostatic spinning apparatus based on Weissenberg effect | |
| CN101871133B (en) | Electrostatic spinning device using rotating disk as emitter | |
| CN103147138B (en) | A kind of electrospinning direct-writing jet printing appts strengthening focusing function by double-deck gas | |
| CN102191568B (en) | Device for promoting electrostatic spinning of high-viscosity polymer melt by using rod-climbing effect | |
| CN207106905U (en) | Unmanned plane centrifugal energy nozzle and the unmanned plane that the shower nozzle is set | |
| CN203683743U (en) | Fiber manufacturing device based on Weissenberg effect | |
| CN103060932B (en) | Drum electrostatic spinning device | |
| CN108411383B (en) | Porous spherical electrostatic spinning nozzle and spinning method thereof | |
| EP2048448A1 (en) | Humidification system | |
| CN110344125B (en) | Batch electrospinning device and method for preparing nanofiber membranes by same | |
| CN110499536B (en) | Preparation method of fluffy nanofiber | |
| CN110565272A (en) | Disordered multi-scale fiber membrane preparation device and preparation method | |
| JP7062791B2 (en) | An electric field spinning device for producing ultrafine fibers with an improved charge solution control structure and a solution transfer pump for that purpose. | |
| JP2008174853A (en) | Nozzle for producing polymer fiber and polymer fiber production apparatus using the nozzle | |
| CN210560896U (en) | Fluffy-state nanofiber preparation device | |
| CN1887441A (en) | Electrostatic sprayer | |
| CN107670871A (en) | A kind of variable diameters jet printing appts | |
| CN108950702B (en) | A kind of self-priming electric spinning equipment and fibrofelt preparation method | |
| CN204779952U (en) | Ball formula electrostatic spinning generating device | |
| CN111455475A (en) | Multi-scale short fiber preparation device and method | |
| CN111424322B (en) | Transverse needle-free electrostatic spinning device | |
| CN111575813B (en) | Handheld electrostatic direct injection device and low-voltage electrostatic spinning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211015 |