CN211471654U - Centrifugal electrostatic spinning device - Google Patents
Centrifugal electrostatic spinning device Download PDFInfo
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- CN211471654U CN211471654U CN201921797765.7U CN201921797765U CN211471654U CN 211471654 U CN211471654 U CN 211471654U CN 201921797765 U CN201921797765 U CN 201921797765U CN 211471654 U CN211471654 U CN 211471654U
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Abstract
The utility model relates to the technical field of electrostatic spinning, in particular to a centrifugal electrostatic spinning device, which comprises an outer shell, a spinning nozzle, a spinning receiving device and a power supply device, wherein a spinning space for accommodating and installing the spinning nozzle and the spinning receiving device is formed inside the outer shell; the negative high-voltage end of the power supply device is connected with the spinning receiving device; the spinning receiving device comprises a plurality of spinning collecting rods which are distributed around the spinning nozzle in an annular array mode, a cloth releasing roll and a cloth collecting roll, wherein the cloth releasing roll is positioned on the first side of each spinning collecting rod, the cloth receiving roll is positioned on the second side of each spinning collecting rod, and the cloth wound on the cloth releasing roll bypasses the collecting rods and is connected with the cloth collecting rolls after being tightened on the collecting rods. The utility model discloses a centrifugation electrostatic spinning device, spinning receiving arrangement include the spinning collect the stick, put the yardage roll and receive the yardage roll, realize the spinning through the cooperation of putting the yardage roll and receiving the yardage roll and collect the continuous collection of spinning on the stick to realized the continuous incessant going on of spinning process, so improved spinning efficiency.
Description
Technical Field
The utility model relates to an electrostatic spinning technical field especially relates to a centrifugation electrostatic spinning device.
Background
The polymer nanofiber and the composite material thereof have the advantages of excellent high porosity, high specific surface area, good ductility and the like, and in recent years, the nanofiber is widely applied to the fields of textile materials, tissue engineering scaffolds, drug delivery, filter media, artificial blood vessels, biochips, nanosensors, optics, composite materials and the like. The existing polymer micro-nanofiber preparation technology mainly comprises a template polymerization method, a phase separation method, a self-assembly method and a spinning processing method, wherein the spinning processing method comprises a melt-blowing method, an electrostatic spinning method, a centrifugal spinning method, a bi-component composite spinning method and the like. The conventional electrospinning method can be classified into melt electrospinning and solution electrospinning according to the state of raw materials, but the yield of the conventional electrospinning is relatively low and mass production is not easy.
Centrifugal spinning is a method which overcomes surface tension by means of centrifugal force generated by high-speed rotation, throws out material matrix in a fluid state at high speed, and forms fibers after solvent in the material volatilizes or melt solidifies, and has the characteristic of high spinning efficiency. However, the fibers prepared by centrifugal spinning are relatively thick and have uneven diameter distribution, so that the mass production and the application thereof are limited. The two are combined and the combined action of centrifugal force and electric field force is utilized, so that the fiber can be further stretched to achieve the effects of refining and mass production of the fiber.
The existing electrostatic spinning device generally comprises a motor, a shell, a high-voltage generator and a liquid supply device, wherein the liquid supply device is connected with a spinning nozzle through a liquid conveying pipe, the spinning nozzle is connected with the motor through a connecting shaft, the motor is attached to a motor tray, and a receiving device is arranged on the periphery of the spinning nozzle; the positive pole of the high-voltage generator is connected with the connecting shaft, and the negative pole of the high-voltage generator is connected with the receiving device. The diameter of the nozzle is too large, the rotating speed of the nozzle is too low, so that the diameter of the spinning fiber is thick, the distribution of the nanofiber formed by the evolution of the spinning jet flow on the receiving device is not uniform, and the uniformity of the manufactured nanofiber membrane is poor; in addition, the spinning collection adopts a fixed circular collector, the spinning film on the collector needs to be frequently picked, the continuous collection of the spinning can not be realized, and the efficiency of the spinning collection is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a centrifugation electrostatic spinning device, through spinning receiving arrangement's institutional advancement, can realize the continuous collection of spinning.
In order to achieve the above object, the present invention provides a centrifugal electrostatic spinning device, which comprises: shell body, spinning shower nozzle, spinning receiving arrangement and power supply unit, wherein: a spinning space for accommodating and installing the spinning nozzle and the spinning receiving device is formed inside the outer shell; the negative high-voltage end of the power supply device is connected with the spinning receiving device, and an electric field required by spinning solution is formed between the spinning nozzle and the spinning receiving device; the spinning receiving device comprises a plurality of spinning collecting rods which are distributed around the spinning nozzle in an annular array mode, a cloth releasing roll and a cloth collecting roll, wherein the cloth releasing roll is positioned on the first side of each spinning collecting rod, the cloth receiving roll is positioned on the second side of each spinning collecting rod, and the cloth wound on the cloth releasing roll bypasses the collecting rods and is connected with the cloth collecting rolls after being tightened on the collecting rods.
Further, the cloth unwinding rolls and the cloth winding rolls are distributed around the spinning nozzle in an annular array and are positioned on the periphery of the spinning collecting rod.
Furthermore, the spinning collecting rod is fastened and installed on the installation plate of the spinning receiving device through a fastening screw, and the spinning spray head is located above the middle of the installation plate.
Furthermore, the fastening screw is an adjustable fastening screw which can be adjusted along the radial direction of the mounting plate.
Further, a spinning solution gathering cavity is formed at the upper part of the spinning nozzle, and a sealing cover is arranged at the top of the spinning solution gathering cavity; the lower part of the spinning nozzle is provided with a power connecting end connected with the output shaft of the nozzle driving device.
Further, a first threaded hole used for being in threaded connection with an output shaft of the nozzle driving device is formed in the bottom of the power connecting end of the spinning nozzle; a plurality of second threaded holes for being in threaded connection with the spinning needle are annularly distributed on the side wall of the spinning nozzle, and the spinning needle is communicated with the bottom of the spinning solution gathering cavity; and a plurality of third threaded holes for being in threaded connection with the sealing cover are annularly distributed at the top of the solution gathering cavity of the spinning nozzle.
Furthermore, the side wall of the spinning nozzle is provided with an annular groove along the annular surface where the second threaded hole is located, and the second threaded hole is located in the annular groove.
Further, electrostatic spinning device still includes temperature control system, and temperature control system includes industry electric fan heater, intake pipe, air discharge fan and blast pipe, wherein: the industrial fan heater is positioned outside the outer shell and is communicated with the spinning space through an air inlet pipe to supply warm air into the spinning space; the spinning space is communicated with the outside through an exhaust pipe to exhaust moisture in the spinning space; the exhaust fan is positioned in the exhaust pipe and provides power for discharging moisture out of the spinning space.
Further, temperature control system still includes controller and a plurality of temperature and humidity detector, wherein: the temperature and humidity detector is arranged in the spinning space; the industrial fan heater and the temperature and humidity detector are respectively electrically connected with the controller.
Furthermore, the nozzle driving device is also provided with a speed increasing mechanism, the output end of the nozzle driving device is connected with the speed increasing mechanism, and the output end of the speed increasing mechanism is connected with the spinning nozzle.
The utility model discloses a centrifugation electrostatic spinning device has following beneficial effect:
1. the utility model discloses a centrifugation electrostatic spinning device, spinning receiving arrangement include the spinning collect the stick, put the yardage roll and receive the yardage roll, realize the spinning through the cooperation of putting the yardage roll and receiving the yardage roll and collect the continuous collection of spinning on the stick to realized the continuous incessant going on of spinning process, so improved spinning efficiency.
2. The utility model discloses a centrifugation electrostatic spinning device, the spinning is collected the stick and is fixed on spinning receiving arrangement's mounting panel through adjustable fastening screw to it is adjustable to have realized that the spinning is collected the distance between stick and the spinning shower nozzle, and it is more convenient to use.
3. The utility model discloses a centrifugation electrostatic spinning device, threaded connection between spinning syringe needle and the spinning shower nozzle to realized the quick replacement of different diameter spinning syringe needles, realized then that spinning device can weave multiple diameter spinning, use more extensively.
4. The utility model discloses a centrifugation electrostatic spinning device, spinning nozzle lateral wall are provided with the annular along second screw hole place anchor ring to guaranteed spinning nozzle second screw hole play liquid stable and even, promoted the homogeneity of the nanofiber membrane of making then.
5. The utility model discloses a centrifugal electrostatic spinning device, still including temperature control system, constantly input the warm braw to the spinning space through industry electric fan heater to volatilization of solvent has been accelerated, forms more high-quality nanofiber.
Drawings
For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the internal structure of the centrifugal electrostatic spinning device of the present invention;
fig. 2 is a schematic diagram of the arrangement structure of the spinning receiving device of the centrifugal electrostatic spinning device of the present invention;
fig. 3 is a schematic view of the overall structure of the centrifugal electrostatic spinning device of the present invention;
fig. 4 is a schematic structural diagram of a spinning nozzle of the centrifugal electrostatic spinning device of the present invention;
in the figure: 1-outer shell, 11-frame base, 2-spinning nozzle, 21-spinning solution gathering cavity, 22-sealing cover, 23-first threaded hole, 24-second threaded hole, 25-third threaded hole, 26-ring groove, 3-spinning receiving device, 31-spinning collecting rod, 32-cloth unwinding roll, 33-cloth winding roll, 34-mounting plate, 4-power supply device, 51-industrial warm air blower, 52-air inlet pipe, 53-air exhaust fan, 54-air exhaust pipe, 6-controller, 7-temperature and humidity detector, 81-nozzle driving device, 82-speed increasing mechanism, 83-motor mounting plate, 84-speed measuring sensor, 9-buffer rubber pad and 10-automatic liquid supply device;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, fig. 2, and fig. 3, the centrifugal electrospinning device according to an embodiment of the present invention includes: shell body 1, spinning nozzle 2, spinning receiving arrangement 3 and power supply unit 4, wherein: a spinning space for accommodating and installing a spinning nozzle 2 and a spinning receiving device 3 is formed inside the outer shell 1; the negative high-voltage end of the power supply device 4 is connected with the spinning receiving device 3, and an electric field required by spinning solution is formed between the spinning nozzle 2 and the spinning receiving device 3; the spinning receiving device 3 comprises a plurality of spinning collecting rods 31 arranged around the spinning nozzle 2 in an annular array, and a cloth unwinding roll 32 and a cloth winding roll 33, which are arranged on the first side and the second side of each spinning collecting rod 31, wherein the cloth wound on the cloth unwinding roll 32 bypasses the collecting rods and is connected with the cloth winding roll 33 after being tightened on the collecting rods.
Specifically, the outer shell 1 mainly plays a role of protection and forms a closed spinning space to accommodate the main structure of the electrospinning device, such as the spinning nozzle 2, the spinning receiving device 3 and the like, and is installed in the spinning space through the rack base 11; the frame base 11 is provided with a buffer rubber pad 9 which plays a good role in shock absorption; the shell body 1 can be square, rectangular or round, and can be built by an aluminum alloy frame and an acrylic plate to form, and the utility model discloses do not specifically limit. The spinning collecting rods 31 are of a circular rod body structure, and optionally, the spinning collecting rods 31 are arranged in 12 and vertically arranged on the spinning receiving device mounting plate 34, and the spinning receiving device mounting plate 34 is preferably a circular plate for mounting the spinning collecting rods 31, the cloth unwinding rolls 32 and the cloth winding rolls 33; the cloth unwinding rolls 32 and the cloth winding rolls 33 are arranged around the spinning nozzle 2 in an annular array and are positioned on the periphery of the spinning collecting rod 31; the 12 spinning collecting rods 31 are mutually connected at the bottom through copper wires to form a conductive loop, and then are electrically connected with the negative high-voltage end of the power supply device 4, and each collecting rod can freely rotate; the yardage roll wound on the spinning collecting rod 31 is tensioned before spinning, 12 yardage rolls 33 can be driven to do synchronous autorotation motion in the spinning process, and the spinning continuous collection can be realized by adjusting the rotating speed of the yardage rolls 33. More specifically, in the spinning process of the centrifugal electrostatic spinning device, the negative high-voltage end of the power supply device 4 is connected with the spinning collecting rod 31, so that an electric field is formed between the spinning nozzle 2 and the spinning collecting rod 31, the spinning solution is thrown out of the spinning nozzle 2 under the action of centrifugal force, the fibers are further refined through further stretching of the electric field force, and the guidance of the fibers is improved.
The utility model discloses a centrifugation electrostatic spinning device, spinning receiving arrangement 3 include the spinning collect stick 31, put yardage roll 32 and receive yardage roll 33, realize the spinning through the cooperation of putting yardage roll 32 and receiving yardage roll 33 and collect the continuous collection of spinning on the stick 31 to realized the continuous incessant going on of spinning process, so improved spinning efficiency.
Further, the spinning collecting rod 31 is tightly mounted on the mounting plate 34 of the spinning receiving device 3 through a fastening screw, and the spinning nozzle 2 is positioned above the middle of the mounting plate 34. Preferably, the fastening screw is an adjustable fastening screw which can be adjusted along the radial direction of the mounting plate 34, so that the distance between the spinning collecting rod 31 and the spinning nozzle 2 is adjustable, the use is more convenient, and different distance requirements are met.
Further, as shown in fig. 4, a spinning solution collecting chamber 21 is formed at the upper part of the spinning nozzle 2, and a sealing cover 22 is installed at the top of the spinning solution collecting chamber 21; the lower part of the spinning nozzle 2 is formed with a power connection end connected with the output shaft of the nozzle driving device 81.
Specifically, the bottom of the power connecting end of the spinning nozzle 2 is provided with a first threaded hole 23 which is in threaded connection with an output shaft of the nozzle driving device 81; a plurality of second threaded holes 24 used for being in threaded connection with spinning needle heads are annularly distributed on the side wall of the spinning nozzle 2, and the spinning needle heads are communicated with the bottom of the spinning solution gathering cavity 21; the spinning solution gathering chamber 21 is annularly provided at the top thereof with a plurality of third screw holes 25 for screw-coupling with the sealing cap 22. Preferably, the first threaded hole 23 is an M16 threaded hole; the number of the second threaded holes 24 is four, the second threaded holes 24 are annularly and uniformly distributed on the side part of the spinning nozzle 2, the second threaded holes 24 are M3.5 threaded passages, and spinning needles of various types can be assembled and disassembled, so that the spinning needles with different diameters can be quickly replaced, the spinning device can be used for spinning the spinning with various diameters, and the application is wider; the third screw hole 25 is a screw hole of M3, the sealing cover 22 is connected with the spinning nozzle 2 through four screws of M3, and the sealing cover 22 is mainly used for preventing the spinning solution in the spinning solution gathering chamber 21 from overflowing.
Further, the side wall of the spinning nozzle 2 is provided with an annular groove 26 along the annular surface where the second threaded hole 24 is located, the second threaded hole 24 is located in the annular groove 26, the arrangement of the annular groove 26 ensures that the second threaded hole 24 of the spinning nozzle 2 is stable and uniform in liquid outlet, and then the uniformity of the manufactured nanofiber membrane is improved.
In the above embodiments of the centrifugal electrospinning device of the present invention, as shown in fig. 3, the centrifugal electrospinning device further includes a temperature control system, the temperature control system includes an industrial fan heater 51, an air inlet pipe 52, an exhaust fan 53, and an exhaust pipe 54, wherein: the industrial warm air blower 51 is positioned outside the outer shell 1 and communicated with the spinning space through an air inlet pipe 52 to supply warm air into the spinning space; the spinning space is communicated with the outside through an exhaust pipe 54 to exhaust moisture in the spinning space; an exhaust fan 53 is located in the exhaust duct 54 to provide the motive force for the moisture to exit the spinning space.
Further, temperature control system still includes controller 6 and a plurality of temperature and humidity detector 7, wherein: the temperature and humidity detector 7 is arranged in the spinning space; the industrial heater unit 51 and the temperature and humidity detector 7 are electrically connected to the controller 6.
Specifically, the liquid supply warm air blower is connected with the air inlet pipe 52, continuously supplies warm air to the spinning space through the air inlet pipe 52, and exhausts moisture in the spinning space through the air outlet pipe 54, so that an air circulation system is formed, and the effect of controlling the temperature and the humidity of the system is achieved; the air inlet pipe 52 is positioned at the lower part of the side wall of one side of the outer shell 1, and the air outlet pipe is positioned at the top of the outer shell 1; the humiture of spinning space environment is detected and is fed back to controller 6 by 4 humiture detectors 7 along spinning receiving arrangement 3 mounting panel 34 annular distribution, and the air-out temperature and the flow of adjusting industry electric fan heater 51 are adjusted by controller 6 again, and then realize that spinning space environment humiture is controllable.
In the above embodiments of the centrifugal electrostatic spinning device of the present invention, as shown in fig. 1, the nozzle driving device 81 is further equipped with the speed increasing mechanism 82, the speed increasing mechanism 82 is connected to the output end of the nozzle driving device 81, and the output end of the speed increasing mechanism 82 is connected to the spinning nozzle 2.
Specifically, the nozzle driving device 81 is a brushless motor, the speed increasing mechanism 82 can be a gear box, the rotating speed range of the brushless motor is 0-5000r/min, and the transmission ratio of the speed increasing mechanism 82 is 1: 2, the brushless motor transmits the torque to an output shaft of the speed increasing mechanism 82 through the speed increasing mechanism 82, and finally drives the spinning nozzle 2 to do rotary motion with the rotating speed of 0-10000 r/min. Spinning nozzle 2 is furnished with tacho sensor 84, can detect out spinning nozzle 2's rotational speed through tacho sensor 84 to carry out real-time regulation and control through controller 6 to spinning nozzle 2's rotational speed, guarantee that the rotational speed is stable. The utility model discloses a centrifugal electrostatic spinning device through acceleration mechanism 82's setting to improved spinning nozzle 2's rotational speed, further made the spinning diameter more even. In addition, the nozzle driving device 81 is installed on the frame base 11 through a motor installation plate 83, and the motor installation plate 83 is provided with a plurality of installation holes for realizing installation of the driving device at different positions, such as the position in fig. 1, which is the installation position provided with the speed increasing mechanism 82.
Furthermore, the centrifugal electrostatic spinning device of the utility model is also provided with an automatic liquid supply device 10 for continuously providing spinning solution to the spinning nozzle 2.
The centrifugal electrostatic spinning device of the utility model prepares the nanometer fiber with smaller and more uniform filament diameter under the traction of the electric field force by the spinning nozzle with high rotating speed and small aperture; and moreover, a closed temperature and humidity control system is adopted, and dry and warm air is fed into the closed spinning space, so that the volatilization of the solvent is accelerated, and the high-quality nano fiber is formed. The utility model discloses a centrifugation electrostatic spinning device, the nanofiber of preparation not only possess better appearance and performance, still can realize the volume production. Through the combination of the automatic liquid supply device and the distributed automatic spinning collecting device, the preparation and the collection of continuous spinning are realized, the characteristic of high centrifugal electrostatic spinning efficiency is fully exerted, and the preparation and collection efficiency of spinning is greatly improved.
The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.
Claims (10)
1. A centrifugal electrospinning device, comprising: shell body, spinning shower nozzle, spinning receiving arrangement and power supply unit, wherein:
a spinning space for accommodating and installing the spinning nozzle and the spinning receiving device is formed inside the outer shell;
the negative high-voltage end of the power supply device is connected with the spinning receiving device, and an electric field required by spinning solution is formed between the spinning spray head and the spinning receiving device;
the spinning receiving device comprises a plurality of spinning collecting rods arranged around the spinning nozzle in an annular array mode, a cloth releasing roll positioned on the first side of each spinning collecting rod and a cloth collecting roll positioned on the second side of each spinning collecting rod, and cloth wound on the cloth releasing roll bypasses the collecting rods and is connected with the cloth collecting rolls after being tightened on the collecting rods.
2. The centrifugal electrospinning device of claim 1, wherein the payout roll and the take-up roll are both arranged around the spinning nozzle in an annular array and located at the periphery of the collecting rod.
3. The centrifugal electrospinning device of claim 1, wherein the spinning collecting rod is tightly mounted on a mounting plate of the spinning receiving device through a fastening screw, and the spinning nozzle is located above the middle of the mounting plate.
4. The centrifugal electrospinning device of claim 3, wherein the fastening screw is an adjustable fastening screw that is adjustable in a radial direction of the mounting plate.
5. The centrifugal electrospinning device of claim 1,
a spinning solution gathering cavity is formed at the upper part of the spinning nozzle, and a sealing cover is arranged at the top of the spinning solution gathering cavity;
and a power connecting end connected with an output shaft of the nozzle driving device is formed at the lower part of the spinning nozzle.
6. The centrifugal electrospinning device of claim 5,
the bottom of the power connecting end of the spinning nozzle is provided with a first threaded hole which is used for being in threaded connection with an output shaft of the nozzle driving device;
a plurality of second threaded holes for being in threaded connection with spinning needle heads are annularly distributed on the side wall of the spinning spray head, and the spinning needle heads are communicated with the bottom of the spinning solution gathering cavity;
and a plurality of third threaded holes for being in threaded connection with the sealing cover are annularly distributed at the top of the solution gathering cavity of the spinning nozzle.
7. The centrifugal electrostatic spinning device of claim 6, wherein the side wall of the spinning nozzle is provided with an annular groove along the ring surface of the second threaded hole, and the second threaded holes are all positioned in the annular groove.
8. The centrifugal electrospinning device of claim 1, further comprising a temperature control system comprising an industrial fan heater, an air inlet pipe, an air exhaust fan, and an air exhaust pipe, wherein:
the industrial fan heater is positioned outside the outer shell and communicated with the spinning space through the air inlet pipe to supply warm air into the spinning space;
the spinning space is communicated with the outside through the exhaust pipe to exhaust moisture in the spinning space;
the exhaust fan is positioned in the exhaust pipe and provides power for discharging moisture out of the spinning space.
9. The centrifugal electrospinning device of claim 8, wherein the temperature control system further comprises a controller and a plurality of temperature and humidity detectors, wherein:
the temperature and humidity detector is arranged in the spinning space;
the industrial fan heater and the temperature and humidity detector are respectively electrically connected with the controller.
10. The centrifugal electrostatic spinning device of claim 5, wherein the nozzle driving device is further provided with a speed increasing mechanism, the output end of the nozzle driving device is connected with the speed increasing mechanism, and the output end of the speed increasing mechanism is connected with the spinning nozzle.
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| CN201921797765.7U CN211471654U (en) | 2019-10-24 | 2019-10-24 | Centrifugal electrostatic spinning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656383A (en) * | 2019-10-24 | 2020-01-07 | 季华实验室 | Centrifugal electrostatic spinning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656383A (en) * | 2019-10-24 | 2020-01-07 | 季华实验室 | Centrifugal electrostatic spinning device |
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