CN113737295A - Nanofiber electrostatic spinning device - Google Patents
Nanofiber electrostatic spinning device Download PDFInfo
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- CN113737295A CN113737295A CN202111078167.6A CN202111078167A CN113737295A CN 113737295 A CN113737295 A CN 113737295A CN 202111078167 A CN202111078167 A CN 202111078167A CN 113737295 A CN113737295 A CN 113737295A
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- 239000002121 nanofiber Substances 0.000 title claims abstract description 47
- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 33
- 238000009987 spinning Methods 0.000 claims abstract description 124
- 238000004140 cleaning Methods 0.000 claims abstract description 99
- 230000007246 mechanism Effects 0.000 claims abstract description 78
- 238000005406 washing Methods 0.000 claims abstract description 29
- 239000011810 insulating material Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 104
- 239000002699 waste material Substances 0.000 claims description 37
- 238000003860 storage Methods 0.000 claims description 28
- 238000001523 electrospinning Methods 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/04—Cleaning spinnerettes or other parts of the spinnerette packs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The application discloses nanofiber electrostatic spinning device belongs to the electrostatic spinning field, has solved the spinning jet of current electrostatic spinning device spinning in-process and needs frequent change, leads to the problem that user use cost is high. The nanofiber electrostatic spinning device comprises a cleaning mechanism, a telescopic mechanism, a base and an installation platform. The base is arranged at the lower end of the motion platform. The mounting table is fixed on the base and is positioned on the same side with the motion platform. One end of the telescopic mechanism is connected with the base, the other end of the telescopic mechanism is connected with the spinning nozzle to drive the spinning nozzle to move, and an insulating material is arranged at the joint of the telescopic mechanism and the spinning nozzle. The cleaning mechanism is fixed on the mounting table, and the output end of the cleaning mechanism can clean the spinning jet moved below the cleaning mechanism. The nanofiber electrostatic spinning device of this application embodiment can wash the spinning jet after the spinning jet blocks up, can continue to spin after the washing is accomplished, avoids the frequent change of spinning jet, has reduced user's use cost.
Description
Technical Field
The application relates to the technical field of electrostatic spinning, in particular to a nanofiber electrostatic spinning device.
Background
Electrostatic spinning is a spinning method for forming nano-grade fibers by generating jet flow from polymer solution or melt under the action of a high-voltage electric field, and is the only most direct method for continuously producing organic and inorganic nano-fibers at present.
Generally, the electrostatic spinning device is composed of a high-voltage power supply, a spinning nozzle and a receiving plate, wherein the spinning nozzle is connected with the anode of the high-voltage power supply, and the receiving plate on a moving platform is connected with the cathode of the high-voltage power supply or grounded. Because of the potential difference between the polymer liquid tip and the receiving plate of the spinneret caused by the high voltage electrostatic action, the liquid drop at the tip gradually changes into a conical shape with the increase of the voltage, the conical shape is called as a Taylor cone, when the applied voltage exceeds the surface tension of the polymer solution or the solution, the liquid at the tip of the Taylor cone is sprayed towards the receiving plate, the sprayed polymer solution or the solution is stretched under the action of the electric field force in the process of spraying the liquid drop to the receiving plate, the polymer jet starts to split and is spirally bent towards the receiving plate with the gradually increasing radius trend after a period of time and distance, the polymer solution solvent volatilizes or the solution solidifies in the process of jet stretching and splitting, and finally the polymer fiber is deposited on the receiving plate in a shaping mode to obtain the electrospun fiber.
The electrostatic spinning nanofiber and the product thereof have the advantages of small fiber diameter, good uniformity, high porosity, high flux, wide application range, saving, environmental protection, low cost and the like, and have wide application prospects in the fields of textile clothing, filter materials, tissue engineering supports, drug release materials, sensors, electronic devices and the like.
Disclosure of Invention
The embodiment of the application provides a nanofiber electrostatic spinning device, and solves the problem that a spinning nozzle needs to be frequently replaced in the spinning process of the existing electrostatic spinning device, so that the use cost of a user is high.
The embodiment of the invention provides a nanofiber electrostatic spinning device which comprises a cleaning mechanism, a telescopic mechanism, a base and an installation table, wherein the cleaning mechanism is arranged on the base; the base is arranged at the lower end of the motion platform; the mounting table is fixed on the base and is positioned on the same side with the motion platform; one end of the telescopic mechanism is connected with the base, the other end of the telescopic mechanism is connected with the spinning nozzle so as to drive the spinning nozzle to move, and an insulating material is arranged at the joint of the telescopic mechanism and the spinning nozzle; the cleaning mechanism is fixed on the mounting table, and the output end of the cleaning mechanism can clean the spinneret which moves below the cleaning mechanism.
In one possible implementation, the spinneret comprises a spinneret holder and a plurality of nozzles; the spinneret seat is connected with the discharge end of the feeding pipe; the nozzles are circumferentially arrayed at the bottom end of the spinneret seat and communicated with the inner cavity of the spinneret seat.
In one possible implementation, the nozzle includes a first standpipe, a chute, and a second standpipe; one end of the first vertical pipe is arranged at the bottom end of the spinning nozzle seat and is communicated with an inner cavity of the spinning nozzle seat, the other end of the first vertical pipe is communicated with one end of the inclined pipe, the other end of the inclined pipe is communicated with one end of the second vertical pipe, the axis of the first vertical pipe is parallel to the axis of the second vertical pipe, and the axis of the inclined pipe and the axis of the first vertical pipe form a preset angle.
In one possible implementation, the number of nozzles is six.
In one possible implementation, the cleaning mechanism comprises a cleaning liquid storage tank, a cleaning spray head and a valve; the cleaning liquid storage tank is fixed on the mounting table; the cleaning spray head is arranged below the cleaning liquid storage tank and is communicated with an inner cavity of the cleaning liquid storage tank, and the cleaning spray head can clean the spinning nozzle moving below the cleaning spray head; the valve is arranged on the cleaning spray head and can open and close the cleaning spray head.
In one possible implementation, the cleaning mechanism further comprises a heater; the heater sets up the inner chamber of washing liquid bin can be right the washing liquid in the washing liquid bin heats.
In one possible implementation, the telescopic mechanism includes a first telescopic structure and a second telescopic structure; the fixed end of the first telescopic structure is connected with the base, the telescopic end of the first telescopic structure is connected with the fixed end of the second telescopic structure, the second telescopic structure can be driven to lift, and the first telescopic structure and the second telescopic structure are vertically arranged; the flexible end of second extending structure with the spinning jet is connected, can drive the spinning jet translation.
In one possible implementation, the first telescopic structure comprises a first electric push rod; the fixed end of the first electric push rod is connected with the base, and the telescopic end of the first electric push rod is connected with the second telescopic structure and can drive the second telescopic structure to lift; and/or, the second extending structure includes second electric putter, second electric putter's stiff end with first extending structure connects, flexible end with the spinning jet is connected, can drive the spinning jet translation.
In one possible implementation manner, the nanofiber electrospinning device further comprises a waste liquid collecting box; the waste liquid collecting box is arranged on the base and is positioned below the cleaning mechanism.
In one possible implementation manner, the nanofiber electrospinning device further comprises a waste liquid treatment mechanism; the waste liquid treatment mechanism comprises a water pump, a first pipeline, a second pipeline, a filter and a one-way valve; the water pump is arranged in the inner cavity of the waste liquid collecting box; one end of the first pipeline is communicated with the water pump, and the other end of the first pipeline is communicated with the filter; the other end of the filter is communicated with the second pipeline; the other end of the second pipeline is communicated with the liquid inlet end of the one-way valve, and the liquid outlet end of the one-way valve extends into the cleaning liquid storage tank.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the embodiment of the invention provides a nanofiber electrostatic spinning device which comprises a cleaning mechanism, a telescopic mechanism, a base and an installation table. The base is arranged at the lower end of the motion platform. The mounting table is fixed on the base and is positioned on the same side with the motion platform. One end of the telescopic mechanism is connected with the base, the other end of the telescopic mechanism is connected with the spinning nozzle to drive the spinning nozzle to move, and an insulating material is arranged at the joint of the telescopic mechanism and the spinning nozzle. The cleaning mechanism is fixed on the mounting table, and the output end of the cleaning mechanism can clean the spinning jet moved below the cleaning mechanism. In practical application, when needs wash the spinning jet, telescopic machanism drives the spinning jet and removes to washing mechanism below, and washing mechanism begins to wash the spinning jet, and after the washing, telescopic machanism drives the spinning jet and resets. The nanofiber electrostatic spinning device of this application embodiment can wash the spinning jet after the spinning jet blocks up, can continue to spin after the washing is accomplished, avoids the frequent change of spinning jet, has reduced user's use cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a nanofiber electrospinning device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a nanofiber electrospinning device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram three of a nanofiber electrospinning device provided in an embodiment of the present application;
fig. 4 is a schematic structural view of a spinneret provided in an embodiment of the present application.
Icon: 1-a cleaning mechanism; 11-a cleaning liquid storage tank; 12-cleaning the spray head; 13-a valve; 14-a heater; 2-a telescoping mechanism; 21-a first telescopic structure; 22-a second telescopic structure; 3-mounting a table; 4-a spinneret; 41-spinneret holder; 42-a nozzle; 421-a first standpipe; 422-inclined tube; 423-a second standpipe; 5-a waste liquid collecting box; 6-a waste liquid treatment mechanism; 61-a water pump; 62-a first conduit; 63-a second conduit; 64-a filter; 65-one-way valve; 7-a feed pipe; 8-a base; 9-moving platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
As shown in fig. 1 to 3, an embodiment of the present invention provides a nanofiber electrospinning device, which includes a cleaning mechanism 1, a telescopic mechanism 2, a base 8, and an installation table 3.
With continued reference to fig. 1, a base 8 is provided at the lower end of the motion platform 9. In the embodiment of the present application, the shape of the base 8 is not limited, and as shown in fig. 1, the base 8 is a rectangular parallelepiped, but of course, the base 8 may also be a cube, a cylinder, or the like.
In practical application, the mounting table 3 is fixed on the base 8 and is located on the same side as the moving platform 9. In the embodiment of the present invention, the shape of the mount base 3 is not limited, but as shown in fig. 1, the mount base 3 has a rectangular parallelepiped configuration, but of course, the mount base 3 may have a square, cylindrical, or other shape.
Continuing to refer to fig. 2, one end of the telescopic mechanism 2 is connected to the base 8, and the other end is connected to the spinning nozzle 4 to drive the spinning nozzle 4 to move, and an insulating material is disposed at the connection position of the telescopic mechanism 2 and the spinning nozzle 4. In practical application, when needs wash spinning jet 4, telescopic machanism 2 drives spinning jet 4 and removes to the lower extreme of wiper mechanism 1, and wiper mechanism 1 washs spinning jet 4, washs the completion back, and telescopic machanism 2 drives spinning jet 4 and resets to make spinning jet 4 continue to carry out the spinning, whole cleaning process is simple convenient, does not need manual operation, has practiced thrift the cost of labor, has improved spinning efficiency. In addition, in the spinning process, the spinning nozzle 4 can be connected with the positive electrode of a high-voltage power supply, so that an insulating material is arranged at the joint of the telescopic mechanism 2 and the spinning nozzle 4, the high-voltage electricity on the spinning nozzle 4 is prevented from being conducted to the telescopic mechanism 2, potential safety hazards are eliminated, and the safety in the spinning process is guaranteed.
Specifically, in the electrostatic spinning process, the moving platform 9 can perform three-dimensional movement on the base 8, so as to drive the receiving plate arranged on the moving platform 9 to perform three-dimensional movement, so that the receiving plate can uniformly receive the jet flow sprayed by the spinneret 4, and further the quality of the produced nanofiber is improved.
In practical application, the cleaning mechanism 1 is fixed on the mounting table 3, and the output end of the cleaning mechanism 1 can clean the spinneret 4 moving below the cleaning mechanism 1. Specifically, wiper mechanism 1 can wash spinning jet 4 when spinning jet 4 blocks up, and spinning head 4 can continue to use after the washing is accomplished, and then has prolonged spinning jet 4's life, has avoided leading to the fact spinning jet 4's frequent change because spinning jet 4 very easily blocks up in the spinning process, has further reduced user's use cost.
The embodiment of the invention provides a nanofiber electrostatic spinning device which comprises a cleaning mechanism 1, a telescopic mechanism 2, a base 8 and an installation table 3. The base 8 is arranged at the lower end of the motion platform 9. The mounting table 3 is fixed on the base 8 and is positioned on the same side as the moving platform 9. One end and the base 8 of telescopic machanism 2 are connected, and the other end is connected with spinning jet 4 to drive spinning jet 4 and remove, and telescopic machanism 2 is provided with insulating material with the junction of spinning jet 4. The cleaning mechanism 1 is fixed on the mounting table 3, and the output end of the cleaning mechanism 1 can clean the spinneret 4 moving below the cleaning mechanism 1. In practical application, when needs wash spinning jet 4, telescopic machanism 2 drives spinning jet 4 and removes to 1 below of wiper mechanism, and wiper mechanism 1 begins to wash spinning jet 4, and after the washing, telescopic machanism 2 drives spinning jet 4 and resets. The nanofiber electrostatic spinning device of this application embodiment can be after 4 jam spinning nozzles to 4 washing spinning nozzles, can continue to spin after the washing completion, avoids spinning nozzle 4's frequent change, has reduced user's use cost.
Specifically, the spinneret 4 includes a spinneret holder 41 and a plurality of nozzles 42. The spinneret holder 41 is connected with the discharge end of the feed pipe 7. A plurality of nozzles 42 are circumferentially arranged at the bottom end of the nozzle holder 41 in an array and are communicated with the inner cavity of the nozzle holder 41. In practical application, the electrostatic spinning nanofiber and the product thereof have the advantages of small fiber diameter, good uniformity, high porosity, high flux, wide application range, saving, environmental protection, low cost and the like, and have wide application prospect in the fields of textile clothing, filter materials, tissue engineering scaffolds, drug release materials, sensors, electronic devices and the like. However, the conventional electrospinning device has a very low production efficiency due to the single nozzle 42, and the yield of nanofibers is only between 0.1g/h and 1.0g/h, so that the electrospun nanofibers and products thereof cannot be produced in large quantities. In the embodiment of the present application, the spinneret 4 is provided with a plurality of nozzles 42, and the plurality of nozzles 42 can work simultaneously and can generate a plurality of jets simultaneously, so that the efficiency of electrostatic spinning can be improved, and the yield of the electrospun nanofibers and products thereof in unit time can be increased, and the electrospun nanofibers and products thereof can be produced in large batch.
In practical application, the arrangement of the plurality of nozzles 42 at the bottom end of the nozzle base 41 does not affect the installation of the nozzle base 41 on the feed pipe 7, and ensures the close fit between the nozzle base 41 and the outer wall of the feed pipe 7 during installation, thereby preventing external air from entering the inner cavity of the nozzle base 41 from the connection between the nozzle base 41 and the feed pipe 7 to accelerate the volatilization of a spinning solvent, causing the blockage of the inner cavity of the nozzle base 41, affecting the effect of electrostatic spinning, and reducing the efficiency of electrostatic spinning. In addition, the plurality of nozzles 42 are arranged at the bottom end of the spinning nozzle base 41, so that the phenomenon that the length of the spinning nozzle base 41 is too high to ensure the fastening effect of the spinning nozzle base 41 on the feeding pipe 7 in the production and manufacturing process is avoided, the weight of the spinning nozzle base 41 is further reduced, the weight of the spinning nozzle base 41 is lighter, the spinning nozzle 4 cannot fall off from the feeding pipe 7 due to overweight in the using process, and the installation of the spinning nozzle base 41 and the feeding pipe 7 is more reliable. Meanwhile, the spinning solvent flowing out from the discharge end of the feed pipe 7 can smoothly flow into the nozzle 42 under the action of gravity, so that the phenomenon that the spinning solvent is gathered in the inner cavity of the spinning nozzle base 41 for a long time to cause the blockage of the inner cavity of the spinning nozzle base 41, and further the electrostatic spinning effect is influenced is avoided.
As shown in fig. 4, the nozzle 42 includes a first standpipe 421, an inclined tube 422, and a second standpipe 423. One end of the first vertical pipe 421 is arranged at the bottom end of the spinning nozzle base 41 and is communicated with the inner cavity of the spinning nozzle base 41, the other end of the first vertical pipe is communicated with one end of the inclined pipe 422, the other end of the inclined pipe 422 is communicated with one end of the second vertical pipe 423, the axis of the first vertical pipe 421 is parallel to the axis of the second vertical pipe 423, and the axis of the inclined pipe 422 and the axis of the first vertical pipe 421 form a preset angle. In practical application, the axis of second standpipe 423 is perpendicular with motion platform 9, and the axis of second standpipe 423 has guaranteed perpendicularly with motion platform 9 that in the spinning process, the spinning solvent that sprays from second standpipe 423 can be more even the dash receiver that sets up on motion platform 9, and then the electric field force also can be more even to the tensile effect of spinning solvent to make electrostatic spinning's spinning effect better, thereby obtain higher quality nanofiber and its goods.
Specifically, the axis of the inclined tube 422 is at a predetermined angle with respect to the axis of the first vertical tube 421. As shown in fig. 1, the predetermined angle is an angle formed by an outer wall of the first vertical pipe 421 facing away from the feeding pipe 7 and an outer wall of the inclined pipe 422 facing upward. The predetermined angle is an obtuse angle. During the spinning process, the second vertical pipes 423 of the plurality of nozzles 42 generate a plurality of jets, and electrostatic repulsion occurs if the plurality of jets are too close to each other, so that the jets are inclined, instability of the jets is increased, and the spun nanofibers are not uniform, thereby affecting the quality of the produced nanofibers. And will predetermine the angle and set up to the obtuse angle for the distance between the second standpipe 423 of each nozzle 42 is than far away, makes a plurality of efflux that the second standpipe 423 of a plurality of nozzles 42 produced also far away, has avoided the distance between a plurality of efflux too near and takes place the electrostatic repulsion effect, therefore produced efflux can not incline among the spinning process, has increased fluidic stability, makes the nanofiber of producing more even, has guaranteed the nanofiber's of producing quality. Of course, the preset angle may be set to a right angle. Comparatively speaking, to predetermine the angle and set up to the obtuse angle and can guarantee that spinning solvent can follow the first standpipe 421, pipe chute 422 and the second standpipe 423 of nozzle 42 in proper order even whereabouts fast under the effect of gravity, reduced the jam probability of nozzle 42 spinning in-process, guaranteed going on smoothly of electrostatic spinning process, improved the nanofiber's that electrostatic spinning produced quality.
In practice, there are six nozzles 42. The six nozzles 42 can improve the efficiency of electrostatic spinning, improve the yield of electrostatic spinning, and simultaneously can better ensure the quality of the nano fibers. Further, as shown in fig. 4, the six nozzles 42 are circumferentially arranged at the bottom end of the spinneret holder 41 in an equidistant array, so that the distances between the six nozzles 42 are consistent, the distances of the jet streams generated by the six nozzles 42 are also consistent, the stability of the jet streams is higher, the produced nanofibers are more uniform, and the quality of the produced nanofibers is further improved.
Specifically, the washing mechanism 1 includes a washing liquid storage tank 11, a washing head 12, and a valve 13.
Further, the cleaning liquid storage tank 11 is fixed to the mount table 3. In practical application, the cleaning liquid is stored in the cleaning liquid storage tank 11 before the spinneret 4 starts spinning, so that the spinneret 4 can be directly cleaned in the electrostatic spinning process, the cleaning preparation time is saved, the cleaning efficiency is improved, and the electrostatic spinning efficiency is further improved. In the embodiment of the present application, the shape of the cleaning liquid storage tank 11 is not limited, and fig. 1 shows a schematic structure of the cleaning liquid storage tank 11 as a rectangular parallelepiped groove, but of course, the cleaning liquid storage tank 11 may have other shapes, such as a square groove, a cylinder, etc.
As shown in fig. 1, the cleaning nozzle 12 is disposed below the cleaning liquid storage tank 11 and communicates with the inner cavity of the cleaning liquid storage tank 11, and the cleaning nozzle 12 can clean the spinneret 4 moving therebelow. The valve 13 is provided on the cleaning head 12 and can open and close the cleaning head 12. In practical application, when the spinneret 4 needs to be cleaned, the valve 13 is opened, the cleaning liquid stored in the cleaning liquid storage tank 11 flows out from the cleaning spray head 12, the cleaning liquid flows into the inner cavity of the spinneret 4 from the top of the spinneret 4 to clean the inner cavity of the spinneret 4, after the cleaning is completed, the valve 13 is closed, and the cleaning liquid stored in the cleaning liquid storage tank 11 does not flow out any more. The whole cleaning process is simple and convenient, can be realized only by opening and closing the valve 13, and has lower cost.
Continuing to refer to FIG. 2, the cleaning mechanism 1 further includes a heater 14. The heater 14 is provided in an inner cavity of the cleaning liquid storage tank 11, and is capable of heating the cleaning liquid in the cleaning liquid storage tank 11. In practical application, the viscosity of the spinning solvent in the spinneret 4 is relatively high, so that the spinning solvent is difficult to clean by using clean water, and the cleaning solution with solubility is generally used for cleaning. Therefore, the heater 14 is arranged in the inner cavity of the cleaning liquid storage tank 11, when the temperature of the cleaning liquid is too low, the heater 14 is started to heat the cleaning liquid, so that the cleaning liquid is ensured to have a good cleaning effect, the cleaning efficiency of the cleaning liquid on the spinning nozzle 4 is further improved, the waiting time in the cleaning process is reduced, and the spinning efficiency is further improved. In addition, the using amount of the cleaning liquid can be saved, and resource waste is avoided.
Specifically, the telescopic mechanism 2 includes a first telescopic structure 21 and a second telescopic structure 22. As shown in fig. 3, the fixed end of the first telescopic structure 21 is connected to the base 8, the telescopic end is connected to the fixed end of the second telescopic structure 22, the second telescopic structure 22 can be driven to lift, and the first telescopic structure 21 and the second telescopic structure 22 are vertically disposed. The flexible end of second extending structure 22 is connected with spinning jet 4, can drive spinning jet 4 translation. In practical application, spout the nozzle base 41 and be connected with the discharge end of inlet pipe 7, when needs wash spinning jet 4, first extending structure 21 shrink drives second extending structure 22 and descends, so that second extending structure 22 drives nozzle base 41 and keeps away from the discharge end of inlet pipe 7, then second extending structure 22 shrink drives spinning jet 4 translation to the lower extreme of washing shower nozzle 12, after the washing finishes, second extending structure 22 extension drives spinning jet 4 translation to the lower extreme of inlet pipe 7, first extending structure 21 extension drives second extending structure 22 and resets, spinning jet 4 continues to spin. The whole cleaning process does not need manual operation, is convenient and quick, avoids frequent replacement of the spinning nozzle 4, and reduces the use cost of users.
In practical applications, the first telescopic structure 21 includes a first electric push rod. The stiff end and the base 8 of first electric putter are connected, and flexible end is connected with second extending structure 22, can drive second extending structure 22 and go up and down. And/or, second extending structure 22 includes second electric putter, and second electric putter's stiff end is connected with first extending structure 21, and flexible end is connected with spinning jet 4, can drive spinning jet 4 translation. Specifically, the first telescopic structure 21 and the second telescopic structure 22 may be both electric push rods, or only the first telescopic structure 21 may be an electric push rod, or only the second telescopic structure 22 may be an electric push rod. The electric push rod has the advantages of large stroke range, large selectivity, simple operation and installation process and low cost.
With continued reference to fig. 2, the nanofiber electrospinning apparatus further comprises a waste liquid collection tank 5. The waste liquid collecting tank 5 is provided on the pedestal 8 and located below the cleaning mechanism 1. In practical application, when needs wash spinning jet 4, the washing liquid that flows out from washing shower nozzle 12 gets into the inner chamber of spinning jet 4 by the upper end of spinning jet 4, and the waste liquid that produces in the cleaning process can flow out from the lower extreme of spinning jet 4, therefore is provided with waste liquid collecting box 5 in the below of wiper mechanism 1, collects the waste liquid that flows out in spinning jet 4, avoids the waste liquid polluted environment, has also guaranteed the cleanness of spinning environment simultaneously. In the embodiment of the present application, the shape of the waste liquid collection box 5 is not limited, and as shown in fig. 2, the waste liquid collection box 5 is a cylindrical structural schematic diagram with an open top surface, and of course, the waste liquid collection box 5 may also be a cube with an open top surface, a cuboid with an open top surface, or the like.
Further, the nanofiber electrospinning device further comprises a waste liquid treatment mechanism 6. The waste liquid treatment mechanism 6 includes a water pump 61, a first pipe 62, a second pipe 63, a filter 64, and a check valve 65. The water pump 61 is arranged in the inner cavity of the waste liquid collecting box 5. One end of the first pipe 62 communicates with the water pump 61, and the other end communicates with the filter 64. The other end of the filter 64 communicates with the second pipe 63. The other end of the second pipeline 63 is communicated with the liquid inlet end of the one-way valve 65, and the liquid outlet end of the one-way valve 65 extends into the cleaning liquid storage tank 11. In practical application, when the washing mechanism 1 washes the spinneret 4, the waste liquid generated in the washing process flows out from the lower end of the spinneret 4, the waste liquid flowing out from the lower end of the spinneret 4 flows into the waste liquid collecting box 5 to be stored, the waste liquid stored in the waste liquid collecting box 5 enters the first pipeline 62 from the liquid outlet of the water pump 61, the waste liquid flowing through the first pipeline 62 flows in from the liquid inlet of the filter 64, the primary filtered liquid is obtained after being filtered by the filter 64, the primary filtered liquid enters the second pipeline 63 from the liquid outlet of the filter 64, the primary filtered liquid enters the check valve 65 from the liquid inlet of the check valve 65 after flowing through the second pipeline 63, and finally the waste liquid is discharged into the washing liquid storage box 11 from the liquid outlet of the check valve 65. The waste liquid treatment mechanism 6 can recycle the waste liquid generated when the cleaning mechanism 1 cleans the spinning nozzle 4, thereby avoiding the waste of cleaning liquid and saving the spinning cost.
In addition, once filtering liquid in the check valve 65 can only flow along a direction, once filtering liquid gets into from the inlet, and the liquid outlet is discharged, therefore the check valve 65 not only can be with once filtering liquid in the second pipeline 63 discharge in the washing liquid bin 11, can also avoid in the liquid inflow waste liquid collecting box 5 in the washing liquid bin 11, prevented the waste of washing liquid.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (10)
1. The nanofiber electrostatic spinning device is characterized by comprising a cleaning mechanism (1), a telescopic mechanism (2), a base (8) and a mounting table (3);
the base (8) is arranged at the lower end of the moving platform (9);
the mounting table (3) is fixed on the base (8) and is positioned on the same side with the moving platform (9);
one end of the telescopic mechanism (2) is connected with the base (8), the other end of the telescopic mechanism is connected with the spinning nozzle (4) so as to drive the spinning nozzle (4) to move, and an insulating material is arranged at the joint of the telescopic mechanism (2) and the spinning nozzle (4);
the cleaning mechanism (1) is fixed on the mounting table (3), and the output end of the cleaning mechanism (1) can clean the spinning nozzle (4) which moves to the lower side of the cleaning mechanism.
2. The nanofiber electrospinning apparatus of claim 1, wherein the spinneret (4) comprises a spinneret holder (41) and a plurality of nozzles (42);
the spinneret holder (41) is connected with the discharge end of the feed pipe (7);
the nozzles (42) are circumferentially arranged at the bottom end of the spinning nozzle base (41) in an array mode and are communicated with the inner cavity of the spinning nozzle base (41).
3. The nanofiber electrospinning apparatus of claim 2, wherein the nozzle (42) comprises a first vertical tube (421), an inclined tube (422), and a second vertical tube (423);
one end of the first vertical pipe (421) is arranged at the bottom end of the spinning nozzle base (41) and is communicated with an inner cavity of the spinning nozzle base (41), the other end of the first vertical pipe is communicated with one end of the inclined pipe (422), the other end of the inclined pipe (422) is communicated with one end of the second vertical pipe (423), the axis of the first vertical pipe (421) is parallel to the axis of the second vertical pipe (423), and the axis of the inclined pipe (422) and the axis of the first vertical pipe (421) form a preset angle.
4. The nanofiber electrospinning apparatus of claim 2, wherein the number of nozzles (42) is six.
5. The nanofiber electrospinning device according to claim 1, wherein the washing mechanism (1) comprises a washing liquid storage tank (11), a washing nozzle (12) and a valve (13);
the cleaning liquid storage tank (11) is fixed on the mounting table (3);
the cleaning spray head (12) is arranged below the cleaning liquid storage box (11) and is communicated with an inner cavity of the cleaning liquid storage box (11), and the cleaning spray head (12) can clean the spinning nozzle (4) moving below the cleaning spray head;
the valve (13) is arranged on the cleaning spray head (12) and can open and close the cleaning spray head (12).
6. The nanofibre electrospinning apparatus according to claim 5, characterised in that the washing means (1) further comprises a heater (14);
the heater (14) is arranged in an inner cavity of the cleaning liquid storage tank (11) and can heat the cleaning liquid in the cleaning liquid storage tank (11).
7. The nanofibre electrospinning apparatus according to claim 1, characterised in that the telescoping mechanism (2) comprises a first telescoping structure (21) and a second telescoping structure (22);
the fixed end of the first telescopic structure (21) is connected with the base (8), the telescopic end of the first telescopic structure is connected with the fixed end of the second telescopic structure (22) and can drive the second telescopic structure (22) to lift, and the first telescopic structure (21) and the second telescopic structure (22) are vertically arranged;
the telescopic end of the second telescopic structure (22) is connected with the spinning nozzle (4) and can drive the spinning nozzle (4) to move horizontally.
8. The nanofibre electrospinning device of claim 7, wherein the first telescopic structure (21) comprises a first electric push rod;
the fixed end of the first electric push rod is connected with the base (8), and the telescopic end of the first electric push rod is connected with the second telescopic structure (22) and can drive the second telescopic structure (22) to lift;
and/or the presence of a gas in the gas,
the second extending structure (22) comprises a second electric push rod, the fixed end of the second electric push rod is connected with the first extending structure (21), and the extending end of the second electric push rod is connected with the spinning nozzle (4) and can drive the spinning nozzle (4) to move horizontally.
9. The nanofiber electrospinning apparatus according to claim 1, further comprising a waste liquid collection tank (5);
the waste liquid collecting box (5) is arranged on the base (8) and is positioned below the cleaning mechanism (1).
10. The nanofiber electrospinning apparatus according to claim 9, further comprising a waste liquid treatment mechanism (6);
the waste liquid treatment mechanism (6) comprises a water pump (61), a first pipeline (62), a second pipeline (63), a filter (64) and a one-way valve (65);
the water pump (61) is arranged in the inner cavity of the waste liquid collecting box (5);
one end of the first pipeline (62) is communicated with the water pump (61), and the other end of the first pipeline is communicated with the filter (64);
the other end of the filter (64) is communicated with the second pipeline (63);
the other end of the second pipeline (63) is communicated with the liquid inlet end of the one-way valve (65), and the liquid outlet end of the one-way valve (65) extends into the cleaning liquid storage tank (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111078167.6A CN113737295A (en) | 2021-09-15 | 2021-09-15 | Nanofiber electrostatic spinning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078167.6A CN113737295A (en) | 2021-09-15 | 2021-09-15 | Nanofiber electrostatic spinning device |
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| CN103194805A (en) * | 2013-04-15 | 2013-07-10 | 厦门大学 | Claw multi-nozzle electrospinning jet device with auxiliary air flow |
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