CN109797444B - High-voltage electrode built-in portable melt electrostatic spinning device - Google Patents
High-voltage electrode built-in portable melt electrostatic spinning device Download PDFInfo
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- CN109797444B CN109797444B CN201910176002.9A CN201910176002A CN109797444B CN 109797444 B CN109797444 B CN 109797444B CN 201910176002 A CN201910176002 A CN 201910176002A CN 109797444 B CN109797444 B CN 109797444B
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Abstract
The invention belongs to the technical field of melt electrostatic spinning equipment, and relates to a high-voltage electrode built-in portable melt electrostatic spinning device, which consists of a spinning nozzle, an electrode holder, an electrode, an isolation protective sleeve, a heat conduction cylinder, an electric heating ring, a jackscrew, a high-voltage wire, a roller groove, a roller, a high-voltage electrostatic module, a power module, a shell, a power wire, an adjusting switch and a first contact point, wherein the main structure of the fan part comprises a shell, a motor, a bracket, fan blades, a heating wire, a vent hole and a second contact point, a tubular material rod is adopted as spinning raw materials, the tubular material rod is heated by the electric heating ring to form melt by precise temperature control, the tubular material rod slowly moves towards a spinning end under the drive of the roller, tens of jet flows are formed under the action of an electric field after the extrusion melt is annularly and uniformly distributed at the tip of the spinning nozzle, and fiber is formed after stretching, solidifying and cooling are realized in batches, and superfine fiber is prepared in real time.
Description
Technical field:
the invention belongs to the technical field of melt electrostatic spinning equipment, and particularly relates to a portable melt electrostatic spinning device with a built-in high-voltage electrode, which can realize the portable real-time continuous batch preparation of superfine fibers.
The background technology is as follows:
the electrostatic spinning is a process for preparing polymer melt or solution into superfine fibers by utilizing high-voltage static electricity, has the characteristics of simple equipment and easy operation, is widely concerned, and is one of the most important methods for preparing polymer continuous nanofibers at present. With the continuous development of nano material technology, electrostatic spinning is a simple and effective novel processing technology capable of producing nano fibers, and plays a great role in biomedical materials, filtration and protection, catalysis, energy sources, photoelectricity and food engineering. The development of the electrostatic spinning technology is rapid, researchers develop various electrostatic spinning devices around the directions of reducing the fiber diameter, increasing the fiber production efficiency and the like, but most of the devices stay in a laboratory stage, have large volume, are inconvenient to carry, cannot be used at any time, and limit the application of the electrostatic spinning technology. In recent years, some technical improvements have been made around portable electrospinning apparatuses by researchers. The portable electrostatic spinning equipment assisted by air flow disclosed in China patent 201810373378.4 comprises an insulating shell, a high-capacity secondary battery, a charging jack, a high-voltage wire, a high-voltage electrostatic generation unit, a high-voltage electrostatic generation switch, an air flow duct connector, an air flow duct, an injector fixing bracket, a disposable injector, a needle fixing bracket, a stainless steel needle and an air flow directional cover; the handle part of the insulating shell is provided with a detachable insulating cover; the high-capacity secondary battery is connected with the high-voltage static electricity generating unit and the charging jack through a high-voltage wire; the high-voltage static electricity generating unit is connected with the high-voltage static electricity generating switch through a high-voltage wire; the high-voltage electrostatic generating switch is positioned at the inner side of the handle of the insulating shell; the air flow conduit is positioned in the middle of the inside of the insulating shell, and an air flow conduit connector is arranged in the middle of the bottom end of the handle of the insulating shell; the upper part of the insulating shell is provided with two syringe fixing brackets, and the disposable syringe is fixed on the upper part of the insulating shell; the stainless steel needle of the injector is fixed at the central axis position of the front end of the insulating shell through a needle fixing bracket, and the needle fixing bracket is connected with the high-voltage static electricity generating unit through a high-voltage wire; a cylindrical airflow directional cover is arranged at the opening of the front section of the insulating shell; the novel portable electrostatic spinning device disclosed in Chinese patent 201720057770.9 comprises a main machine and a handheld spray gun, wherein the main machine comprises a main machine shell, a power supply, a gas generation mechanism and a high-voltage power supply mechanism are arranged in the main machine shell, the handheld spray gun comprises a gun body shell, a spinning nozzle and a liquid supply mechanism for supplying spinning precursor liquid to the spinning nozzle, an air inlet and an air outlet are arranged on the gun body shell, the air inlet is connected with an air duct of the gas generation mechanism, the spinning nozzle extends out of the gun body shell from the air outlet, and a spraying port of the spinning nozzle coincides with a central axis of the air outlet; the power supply is electrically connected with the high-voltage power supply mechanism, the gas generation mechanism and the liquid supply mechanism, and the anode of the voltage output end of the high-voltage power supply mechanism is connected with the spinneret through a wire; the portable electrostatic spinning equipment disclosed in Chinese patent 201510214221.3 comprises a dry battery power supply, a high-voltage electrostatic generating device, a feeding device, a gas generating device, a spinning jet device and an insulating shell; the dry battery power supply is electrically connected with the high-voltage static electricity generating device, the feeding device and the gas generating device; the high-voltage electrostatic generation device comprises a DC-high-voltage DC inverter and a voltage regulation circuit, wherein the voltage input end of the DC-high-voltage DC inverter is electrically connected with a dry battery power supply, and the voltage output end of the DC-high-voltage DC inverter is connected with the voltage regulation circuit for controlling the output voltage of the high-voltage electrostatic generation device; the voltage output end of the voltage regulating circuit is the voltage output end of the high-voltage static electricity generating device, the negative electrode of the voltage output end of the high-voltage static electricity generating device is grounded, the positive electrode of the voltage output end of the high-voltage static electricity generating device is connected with a metal capillary nozzle of the spinning jet device, and the metal capillary nozzle is communicated with the feeding device; the spinning jet device also comprises an air flow conduit coaxial with the metal capillary nozzle, the air flow conduit is sleeved outside the metal capillary nozzle, and the air flow conduit is connected with the gas generating device; the dry battery power supply, the high-voltage static electricity generating device and the gas generating device are arranged in the insulating shell, an opening matched with the caliber of the port of the gas flow guide pipe is arranged on the insulating shell, and the gas flow guide pipe and the injection port of the metal capillary nozzle are aligned to or extend out of the opening of the insulating shell; the main structure of the portable low-voltage near-field electrostatic spinning demonstration device disclosed in Chinese patent 201020156420.6 comprises an experiment instrument shell, a voltage supply area, a control panel, a single-leaf door, a handle, a power plug, a spinning dial, a grounding wire, a high-voltage direct-current power supply, a metal spinning needle, a scale support rod, a connecting rod, an insulating basal surface, an aluminum foil, a cover glass, a Taylor cone and spinning jet flow, and is characterized in that the handle is arranged in the center of the upper side surface of the experiment instrument shell in a cuboid box type structure, the control panel is arranged on the right half surface of the front side surface of the experiment instrument shell, the single-leaf door is arranged on the left half surface of the front side surface of the experiment instrument shell, and a power wire is connected to the rear side surface of the experiment instrument shell and is electrically communicated with the power plug; an experiment instrument main body internal structure is arranged in an inner cavity of an experiment instrument shell, an insulating basal surface with a size corresponding to the bottom surface of the experiment instrument shell is formed at the bottom of the inner cavity, a scale supporting rod is vertically arranged in the middle of the left side of the insulating basal surface, a connecting rod is transversely arranged at the upper half part of the scale supporting rod, a spinning needle disc is arranged at one end point of the connecting rod, 1-10 metal spinning needles are vertically arranged in the spinning needle disc, the top ends of the metal spinning needles are connected with a high-voltage direct-current power supply positive electrode, a Taylor cone is arranged at the bottom end of the metal spinning needles, and spinning jet flows are ejected from the Taylor cone tip parts; spreading an aluminum foil on the right side of the center of the insulating substrate surface, and placing a cover glass on the aluminum foil; the aluminum foil is connected with the negative electrode of the high-voltage direct-current power supply and connected with a grounding wire; the portable small integrated electrostatic spinning machine special for the laboratory disclosed in China patent 201120097470.6 comprises an insulating box body, a transparent plastic door, a pressurizing screw, a liquid adding bottle cap, an exhaust hose, an exhaust port valve, an incandescent lamp switch, a handle with a lock, a pressurizing inflator, a vent valve, a connecting sleeve, a hose, a fixed ring, a direct-current high-voltage power supply, a pressure regulating knob, a liquid adding bottle, a liquid outlet valve, a lead, a liquid storage pipe, a Taylor cone, a controllable turning point, an incandescent lamp, a dirt tray, a collector, a supporting rod, a fastening screw and a supporting frame, wherein the whole device is provided with a grounding wire, and all parts of devices are integrated in the small insulating box body by taking the liquid storage pipe as a center and are connected by using the handle screw and the clip, so that the device is easy to disassemble; the spinning media of the patent products are all solutions, melt electrostatic spinning cannot be carried out, and batch, portable, continuous and real-time preparation of superfine fibers cannot be realized. Therefore, a portable melt electrostatic spinning device is developed and designed, miniaturization and portability of the device are realized through the built-in high-voltage electrode, and batch continuous preparation of fibers can be realized.
The invention comprises the following steps:
the invention aims to overcome the defects of the prior art, and develops a high-voltage electrode built-in portable melt electrostatic spinning device, so as to realize fiber spraying, deposition and continuous real-time preparation in any direction on any surface.
In order to achieve the above purpose, the high-voltage electrode built-in portable melt electrostatic spinning device consists of a spinning part and a fan part; the main structure of the spinning part comprises a spinning nozzle, an electrode retainer, an electrode, an isolation protective sleeve, a heat conduction cylinder, an electric heating ring, a jackscrew, a high-voltage wire, a roller groove, a roller, a high-voltage electrostatic module, a power module, a shell, a power wire, an adjusting switch and a first contact point; an electrode holder is arranged in a spinning nozzle with a hollow cylindrical structure, the top end of the spinning nozzle is in an outer conical shape, the tail end of the electrode holder is in a conical shape, one end of the electrode holder is provided with an electrode with a round spherical structure, the periphery of the spinning nozzle is provided with an isolation protection sleeve with a tubular structure, the front end between the spinning nozzle and the isolation protection sleeve is provided with a heat conduction cylinder with a tubular structure and an electric heating ring, the electric heating ring is fixedly sleeved on the inner side of a notch at the front end of the heat conduction cylinder, the top end of the heat conduction cylinder is in a conical shape which is matched with the top end of the spinning nozzle, three jackscrews which are arranged at equal intervals are used for fixedly connecting the spinning nozzle, the electrode holder and the heat conduction cylinder, one jackscrew is in a hollow structure, a high-voltage wire is led out by the electric heating ring and passes through the hollow jackscrew and the electrode holder to be connected with the electrode, two roller grooves with mirror symmetry structures are formed in the inner part of the isolation protection sleeve, a high-voltage electrostatic module is arranged below the rear end of the isolation protection sleeve, a power module is arranged below the high-voltage electrostatic module, the high-voltage electrostatic module is arranged on the isolation protection sleeve, the power module is arranged on the outer side of the power module, the power module is arranged on the power module, the power module is fixedly arranged on the front end of the heat protection sleeve, the power module is provided with a shell, and the power supply module is arranged on the power supply module, and the power supply module and the power supply holder has a contact point; the main body structure of the fan part comprises a shell, a motor, a bracket, fan blades, a heating wire, an air vent and a second contact point; the motor is fixed in the shell through two brackets, the motor is connected with the fan blade, the fan blade is positioned between the two brackets, a heating wire is arranged between the two brackets, the rear end of the shell is provided with a vent hole, the side edge of the shell is provided with a second contact point, and the motor and the heating wire are respectively connected with the second contact point; the gap between the spinning nozzle and the electrode retainer is a first annular cavity, the gap between the spinning nozzle and the isolation protective sleeve is a second annular cavity, the spinning part is connected with the fan part after the shell is inserted into the second annular cavity, the first contact point is communicated with the second contact point, and the power module supplies power for the fan part.
The electrode holder and the isolation protective sleeve are both made of heat insulation materials, and comprise ceramics, polytetrafluoroethylene and polyether-ether-ketone; the isolation protective sleeve has heat insulation and insulation effects, and can protect personnel and equipment safety; the idler wheel is a concave wheel; the power supply module performs AC/DC conversion and voltage reduction treatment on the commercial power; the outer side parts of the high-voltage electrostatic module and the power supply module of the shell are handheld parts; the power line can be connected with a commercial power or a lithium battery; the regulating switch can regulate the flow speed and temperature of the air flow, the electrostatic voltage, the rotating speed of the roller, the temperature of the electric heating ring and the temperature of the heating wire; the shell has a positioning function on the spinning nozzle; the motor is a high-speed motor; the heating wire is a thermal resistance heating wire; the vent is the passage of air into the housing.
When the high-voltage electrode built-in portable melt electrostatic spinning device is used, the fan part is taken down, a tubular material rod which is convenient to store and carry and is formed by extrusion or injection molding of polymer raw materials is sent between concave surfaces of the rollers, the inner diameter and the outer diameter of the tubular material rod are the same as those of the second annular cavity, and then the fan part is inserted into the second annular cavity; the power line is connected with a mains supply, the motor drives the fan blade to rotate at a high speed to generate rightward air flow, the air flow is heated by the heating wire to become hot air flow, the temperature and the speed of the hot air flow are regulated and controlled by the regulating switch according to set spinning parameters, and the hot air flow enters a first annular cavity through a cavity of the spinning nozzle and is sprayed out of the outer side of the electrode after being distributed in an annular mode; simultaneously, the tubular material rod is clamped by the concave surface of the roller wheel and conveyed to the right in the annular cavity II, the speed of conveying the tubular material rod in the annular cavity II is regulated by regulating the rotating speed of the roller wheel through regulating the switch, the right end of the tubular material rod reaches the heat conduction cylinder, before the tubular material rod reaches the heat conduction cylinder, the electric heating ring is electrified and heats the heat conduction cylinder, the tubular material rod reaching the heat conduction cylinder is heated and melted into a melt, and the melt is extruded to the conical surface tip of the spinning nozzle by the tubular material rod continuously conveyed to the right and is uniformly distributed in an annular shape; the electrode is charged with high-voltage static electricity under the action of the high-voltage static electricity module, the static voltage is regulated to 10kV through the regulating switch, the electrode is charged, the conical surface tip of the spinning nozzle is charged in an induction way, the melt at the conical surface tip of the spinning nozzle forms tens of evenly distributed jet flows in a self-organization way, the jet flows are sprayed to the receiving device forwards under the drive of hot air flow, and the jet flows are stretched, solidified and cooled to form superfine fibers.
Compared with the prior art, the tubular material rod which is convenient to store, carry and install and prepared in advance is adopted as spinning raw material, an electric heating ring is utilized to accurately heat a part of material near the end part of the tubular material rod to form melt, the tubular material rod is driven by a roller to slowly move towards a spinning end, the extruded melt is uniformly distributed annularly at the tip of a spinning nozzle with a conical structure, under the action of an electric field, the annularly distributed melt forms dozens of jet flows, the high-speed air flow generated by the rotation of a fan blade is driven by the motor to drive the jet flows to blow the receiving device after being heated by the heating wire, the jet flows are stretched, solidified and cooled to form superfine fibers, so that the real-time batch preparation of the superfine fibers is realized, the center of the spinning nozzle is internally provided with an electrode, the applied voltage is reduced to be within 10kV from the conventional 50-80kV, the volume of a high-voltage electrostatic module is reduced while the safety coefficient is improved, the purpose of realizing portable design is facilitated, meanwhile, the limitation of the electric connection of the conventional electrostatic spinning receiving device is relieved, the real-time continuous spraying, deposition and preparation of the superfine fibers in any directions on any surfaces are realized, and the application direction of the micro-nano fibers is prepared by electrostatic spinning is expanded; the novel spinning machine has the advantages of simple structure, simplicity and convenience in operation, small volume, convenience in carrying and holding, high spinning efficiency, high heating speed and filament outlet speed, accurate temperature control, contribution to fiber refinement, and capability of being widely applied to the fields of experimental demonstration, medical use, military use and the like.
Description of the drawings:
fig. 1 is a schematic diagram of the principle of the main structure of the present invention.
Fig. 2 is a schematic diagram of the principle of the main structure of the tubular material rod according to the present invention.
Fig. 3 is a schematic diagram of the connection relationship between a tubular material rod and a roller according to the present invention.
The specific embodiment is as follows:
the invention will now be described in further detail by way of examples with reference to the accompanying drawings.
Example 1:
the high-voltage electrode built-in portable melt electrostatic spinning device related to the embodiment consists of a spinning part 1 and a fan part 3; the main structure of the spinning part 1 comprises a spinning nozzle 10, an electrode retainer 11, an electrode 12, an isolation protective sleeve 13, a heat conduction cylinder 14, an electric heating ring 15, a jackscrew 16, a high-voltage wire 17, a roller groove 18, a roller 19, a high-voltage electrostatic module 20, a power module 21, a shell 22, a power wire 23, an adjusting switch 24 and a first contact point 25; an electrode holder 11 is arranged in a spinning nozzle 10 with a hollow cylindrical structure, the top end of the spinning nozzle 10 is in an outer conical shape, the tail end of the electrode holder 11 is in a conical shape, one end of the electrode holder 11 is provided with an electrode 12 with a round spherical structure, the periphery of the spinning nozzle 10 is provided with an isolating protective sleeve 13 with a tubular structure, the front end between the spinning nozzle 10 and the isolating protective sleeve 13 is provided with a heat conduction cylinder 14 with a tubular structure and an electric heating ring 15, the electric heating ring 15 is fixedly sleeved on the inner side of a front end notch of the heat conduction cylinder 14, the top end of the heat conduction cylinder 14 is in a conical shape which is matched with the top end of the spinning nozzle 10, three equally-spaced jackscrews 16 are used for fastening the spinning nozzle 10, the electrode holder 11 and the heat conduction cylinder 14, one jackscrew 16 is in a hollow structure, a high-voltage wire 17 is led out from the electric heating ring 15 and then passes through the hollow jackscrew 16 and the electrode holder 11 and is connected with the electrode 12, the inside of the isolating protective sleeve 13 is provided with two roller grooves 18 with mirror symmetry structures, the roller grooves 18 are arranged in the roller grooves, the rear end of the isolating protective sleeve 13 is fixedly sleeved on the inner side of the heat conduction cylinder 14 and provided with a high-voltage electrostatic module 20, a high-voltage module 20 is arranged on the high-voltage module 20, a power supply module 20 is arranged on the high-voltage module 20 is arranged on the power supply module 22, a power supply module 22 is arranged on the power supply module 22, and an outer shell 22 is arranged on the power supply module 22, and an outer side of the power supply module 22 is arranged on the power supply module 22; the main structure of the fan part 3 comprises a shell 30, a motor 31, a bracket 32, fan blades 33, a heating wire 34, a vent hole 35 and a second contact point 36; the motor 31 is arranged in the shell 30 with the hollow structure, the motor 31 is fixed in the shell 30 through two brackets 32, the motor 31 is connected with the fan blades 33, the fan blades 33 are positioned between the two brackets 32, the heating wire 34 is arranged between the two brackets 32, the rear end of the shell 30 is provided with a vent hole 35, the side edge of the shell 30 is provided with a second contact point 36, and the motor 31 and the heating wire 34 are respectively connected with the second contact point 36; the gap between the spinning nozzle 10 and the electrode retainer 11 is a first annular cavity 41, the gap between the spinning nozzle 10 and the isolation protective sleeve 13 is a second annular cavity 42, the spinning part 1 and the fan part 3 are connected after the shell 30 is inserted into the second annular cavity 42, the first contact point 25 and the second contact point 36 are communicated, and the power module 21 supplies power to the fan part 3.
The electrode holder 11 and the isolation protective sleeve 13 related to the embodiment are both made of heat-insulating materials, including ceramics, polytetrafluoroethylene and polyether-ether-ketone; the isolation protective sleeve 13 has heat insulation and insulation effects, and can protect personnel and equipment; the roller 19 is a concave roller; the power module 21 performs alternating current-direct current conversion and voltage reduction treatment on the commercial power; the outer parts of the high-voltage electrostatic module 20 and the power supply module 21 of the shell 22 are handheld parts; the power cord 23 can be connected to a mains or lithium battery; the regulating switch 24 can regulate the flow rate and temperature of the air flow, the electrostatic voltage, the rotating speed of the roller 19, the temperature of the electric heating ring 15 and the temperature of the heating wire 34; the shell 30 has a positioning function on the spinning nozzle 10; the motor 31 is a high-speed motor; the heating wire 34 is a thermal resistance heating wire; the vent 35 is a passage for air into the housing 30.
When the high-voltage electrode built-in portable melt electrostatic spinning device is used, the fan part 3 is taken down, a tubular material rod which is convenient to store and carry and is formed by extrusion or injection molding of polymer raw materials is sent between concave surfaces of the roller 19, the inner diameter and the outer diameter of the tubular material rod are the same as those of the second annular cavity 42, and then the fan part 3 is inserted into the second annular cavity 42; the power line 23 is connected with the mains supply, the motor 31 drives the fan blades 33 to rotate at a high speed to generate rightward air flow, the air flow is heated by the heating wire 34 to become hot air flow, the temperature and the speed of the hot air flow are regulated and controlled by the regulating switch 24 according to the set spinning parameters, and the hot air flow enters the first annular cavity 41 through the cavity of the spinning nozzle 10, is distributed in an annular mode and is sprayed out of the outer side of the electrode 12; simultaneously, the tubular material rod is clamped by the concave surface of the roller 19 in the second annular cavity 42 to be conveyed to the right, the speed of conveying the tubular material rod in the second annular cavity 42 is regulated by regulating the rotating speed of the roller 19 through the regulating switch 24, the right end of the tubular material rod reaches the heat conduction cylinder 14, before the tubular material rod reaches the heat conduction cylinder 14, the electric heating ring 15 is electrified and heats the heat conduction cylinder 14, the tubular material rod reaching the heat conduction cylinder 14 is heated and melted into a melt, and the melt is extruded to the conical tip of the spinning nozzle 10 by the tubular material rod continuously conveyed to the right and is uniformly distributed in a ring shape; the electrode 12 is charged with high-voltage static electricity under the action of the high-voltage static electricity module 20, the static voltage is regulated to 10kV through the regulating switch 24, the electrode 12 is charged, the conical tip of the spinning nozzle 10 is charged in an induction way, the melt at the conical tip of the spinning nozzle 10 is self-organized to form tens of evenly-distributed jet flows, the jet flows are sprayed to the receiving device forwards under the drive of hot air flow, and the jet flows are stretched, solidified and cooled to form superfine fibers.
Claims (2)
1. A high-voltage electrode built-in portable melt electrostatic spinning device is characterized in that a main body structure consists of a spinning part and a fan part; the main structure of the spinning part comprises a spinning nozzle, an electrode retainer, an electrode, an isolation protective sleeve, a heat conduction cylinder, an electric heating ring, a jackscrew, a high-voltage wire, a roller groove, a roller, a high-voltage electrostatic module, a power module, a shell, a power wire, an adjusting switch and a first contact point; an electrode holder is arranged in a spinning nozzle with a hollow cylindrical structure, the top end of the spinning nozzle is in an outer conical shape, the tail end of the electrode holder is in a conical shape, one end of the electrode holder is provided with an electrode with a round spherical structure, the periphery of the spinning nozzle is provided with an isolation protection sleeve with a tubular structure, the front end between the spinning nozzle and the isolation protection sleeve is provided with a heat conduction cylinder with a tubular structure and an electric heating ring, the electric heating ring is fixedly sleeved on the inner side of a notch at the front end of the heat conduction cylinder, the top end of the heat conduction cylinder is in a conical shape which is matched with the top end of the spinning nozzle, three jackscrews which are arranged at equal intervals are used for fixedly connecting the spinning nozzle, the electrode holder and the heat conduction cylinder, one jackscrew is in a hollow structure, a high-voltage wire is led out by the electric heating ring and passes through the hollow jackscrew and the electrode holder to be connected with the electrode, two roller grooves with mirror symmetry structures are formed in the inner part of the isolation protection sleeve, a high-voltage electrostatic module is arranged below the rear end of the isolation protection sleeve, a power module is arranged below the high-voltage electrostatic module, the high-voltage electrostatic module is arranged on the isolation protection sleeve, the power module is arranged on the outer side of the power module, the power module is arranged on the power module, the power module is fixedly arranged on the front end of the heat protection sleeve, the power module is provided with a shell, and the power supply module is arranged on the power supply module, and the power supply module and the power supply holder has a contact point; the main body structure of the fan part comprises a shell, a motor, a bracket, fan blades, a heating wire, an air vent and a second contact point; the motor is fixed in the shell through two brackets, the motor is connected with the fan blade, the fan blade is positioned between the two brackets, a heating wire is arranged between the two brackets, the rear end of the shell is provided with a vent hole, the side edge of the shell is provided with a second contact point, and the motor and the heating wire are respectively connected with the second contact point; the gap between the spinning nozzle and the electrode retainer is a first annular cavity, the gap between the spinning nozzle and the isolation protective sleeve is a second annular cavity, the spinning part is connected with the fan part after the shell is inserted into the second annular cavity, the first contact point is communicated with the second contact point, and the power module supplies power for the fan part; the electrode holder and the isolation protective sleeve are both made of heat insulation materials, and comprise ceramics, polytetrafluoroethylene and polyether-ether-ketone; the isolation protective sleeve has heat insulation and insulation effects, and can protect personnel and equipment safety; the idler wheel is a concave wheel; the power supply module performs AC/DC conversion and voltage reduction treatment on the commercial power; the outer side parts of the high-voltage electrostatic module and the power supply module of the shell are handheld parts; the power line can be connected with a commercial power or a lithium battery; the regulating switch can regulate the flow speed and temperature of the air flow, the electrostatic voltage, the rotating speed of the roller, the temperature of the electric heating ring and the temperature of the heating wire; the shell has a positioning function on the spinning nozzle; the motor is a high-speed motor; the heating wire is a thermal resistance heating wire; the vent is the passage of air into the housing.
2. The high-voltage electrode built-in portable melt electrostatic spinning device according to claim 1, wherein when in use, the fan part is removed, a tubular material rod which is convenient to store and carry and is extruded or injection molded by polymer raw materials is sent between concave surfaces of the rollers, the inner diameter and the outer diameter of the tubular material rod are the same as those of the second annular cavity, and then the fan part is inserted into the second annular cavity; the power line is connected with a mains supply, the motor drives the fan blade to rotate at a high speed to generate rightward air flow, the air flow is heated by the heating wire to become hot air flow, the temperature and the speed of the hot air flow are regulated and controlled by the regulating switch according to set spinning parameters, and the hot air flow enters a first annular cavity through a cavity of the spinning nozzle and is sprayed out of the outer side of the electrode after being distributed in an annular mode; simultaneously, the tubular material rod is clamped by the concave surface of the roller wheel and conveyed to the right in the annular cavity II, the speed of conveying the tubular material rod in the annular cavity II is regulated by regulating the rotating speed of the roller wheel through regulating the switch, the right end of the tubular material rod reaches the heat conduction cylinder, before the tubular material rod reaches the heat conduction cylinder, the electric heating ring is electrified and heats the heat conduction cylinder, the tubular material rod reaching the heat conduction cylinder is heated and melted into a melt, and the melt is extruded to the conical surface tip of the spinning nozzle by the tubular material rod continuously conveyed to the right and is uniformly distributed in an annular shape; the electrode is charged with high-voltage static electricity under the action of the high-voltage static electricity module, the static voltage is regulated to 10kV through the regulating switch, the electrode is charged, the conical surface tip of the spinning nozzle is charged in an induction way, the melt at the conical surface tip of the spinning nozzle forms tens of evenly distributed jet flows in a self-organization way, the jet flows are sprayed to the receiving device forwards under the drive of hot air flow, and the jet flows are stretched, solidified and cooled to form superfine fibers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910176002.9A CN109797444B (en) | 2019-03-08 | 2019-03-08 | High-voltage electrode built-in portable melt electrostatic spinning device |
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| CN201910176002.9A CN109797444B (en) | 2019-03-08 | 2019-03-08 | High-voltage electrode built-in portable melt electrostatic spinning device |
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| CN109797444B true CN109797444B (en) | 2024-04-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110484982A (en) * | 2019-06-20 | 2019-11-22 | 青岛大学 | Hand-held melt electric spinning equipment |
| CN111424322B (en) * | 2020-03-04 | 2022-03-08 | 青岛科技大学 | Transverse needle-free electrostatic spinning device |
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| CN1407144A (en) * | 2001-08-18 | 2003-04-02 | 诺马格有限及两合公司 | Spinning devices |
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