CN103451751A - Electrospinning device with bi-layer petal-shaped nozzle - Google Patents
Electrospinning device with bi-layer petal-shaped nozzle Download PDFInfo
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- CN103451751A CN103451751A CN2013103344459A CN201310334445A CN103451751A CN 103451751 A CN103451751 A CN 103451751A CN 2013103344459 A CN2013103344459 A CN 2013103344459A CN 201310334445 A CN201310334445 A CN 201310334445A CN 103451751 A CN103451751 A CN 103451751A
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Abstract
The invention discloses an electrospinning device with a bi-layer petal-shaped nozzle, and belongs to the field of electrospinning. The electrospinning device comprises a motor, a coupling, a feeding barrel, a discharging barrel, a receiving device, a high-voltage electrostatic generator, the nozzle, a heating unit, a screw, a copper-ring sliding bearing and a temperature sensor. The motor and the feeding barrel are supported by long bolts, the feeding barrel is connected with the discharging barrel through short bolts, the copper-ring sliding bearing is arranged between the feeding barrel and the discharging barrel in a matched manner, distribution flow passages are formed in the copper-ring sliding bearing and matched with the bi-layer petal-shaped nozzle to form bi-layer jet, the motor drives the screw to rotate through the coupling, the screw is matched with the feeding barrel and the discharging barrel through the copper-ring sliding bearing, and the lower end of the screw is connected with the nozzle in a threaded manner and drives the nozzle to rotate. The motor drives the screw to rotate, and thereby spinning feed delivery amount can be effectively controlled; due to multi-stage distribution and nozzle rotation, finer and evener fibers can be obtained; through the petal-shaped nozzle, spinning efficiency can be improved.
Description
Technical field
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer, belong to the electrostatic spinning field.
Background technology
Along with the research and development of nanometer technology, electrostatic spinning has become at present more popular and more effectively manufacture the method for superfine fibre.During preparation, solution or melt form taylor cone under the effect of voltage, and along with voltage constantly increases, taylor cone overcomes self surface tension formation injection thread, flies to receiving system, and constantly solidify to form fiber.At present, by electrospinning process, successfully made tens kinds of polymer fibers, the fibre diameter made generally, between several microns, even reaches nanoscale.The equipment of electrostatic spinning is simple, processing ease, technical process do not destroy material body, and prepared fiber has very wide application prospect in fields such as filtration, medical science, aviations.
Current existing electrostatic spinning apparatus general more or less have problems such as production efficiency is relatively low, mass flow discrepancy is even, and great majority research all concentrates on the research of single assembly, such as nozzle structure design, technical process etc., the defect that the present invention exists for melt electrostatic spinning, whole electrostatic spinning apparatus is improved, comprised feed system, heater, shower nozzle etc., general structure is optimized, thereby improve electrostatic spinning production efficiency, obtain uniform fiber.
Summary of the invention
The present invention proposes the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer, can overcome the defects such as electrostatic spinning apparatus production efficiency is relatively low, mass flow discrepancy is even for the problems referred to above, can also make simultaneously fiber more evenly, more very thin.
The scheme that realizes above-mentioned purpose is: the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer mainly comprises motor, shaft coupling, upper barrel, blanking tube, receiving system, HV generator, shower nozzle, heater, screw rod, copper ring sliding bearing and temperature sensor.Motor is connected by stay bolt with upper barrel, by motor support in upper barrel top; Upper barrel is connected by four uniform lag bolts with blanking tube, with easy disassembly; The screw rod upper end is connected with motor by shaft coupling, the screw rod lower end is placed in the inner chamber of barrel and blanking tube, the copper ring sliding bearing is installed between upper barrel and blanking tube, the lower end of copper ring sliding bearing and lower bearing hole interference fit, the upper end of copper ring sliding bearing and upper bearing (metal) hole interference fit, the multiaspect cooperation makes the copper ring sliding bearing accurately locate, and the interior contact-making surface of copper ring sliding bearing and screw clearance coordinate, form a sliding pair, polymer melt also has certain lubrication to it; Shower nozzle and screw rod are for being threaded, and a bolt rotary part plays the conveying effect, and a part drives the shower nozzle rotation, makes flow distribution even; Heater adopts heating collar, and minute three grades of heating guarantee that preheating, melting fully put in place; HV generator is connected with receiving system, and temperature sensor transmits temperature, and external temperature control box is controlled temperature.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, the stepper motor that its motor is adjustable speed, can reach very little rotating speed, and motor is connected with screw rod by shaft coupling, by regulating the rotating speed of motor, can change screw speed, thereby change the flow of melt extrusion, reach the effect of regulating melt flow, screw rod drives the shower nozzle rotation simultaneously, uniform molten polymer, make jet even, thereby spin to obtain uniform fiber.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, at upper barrel and blanking tube junction, dispose by the copper ring sliding bearing of upper bearing (metal) hole and location, lower bearing hole, the copper ring sliding bearing has location centering effect to screw rod, guarantee that screw rod can be not eccentric in lower end, thereby guarantee that the gap between screw rod and barrel is even, polymer is evenly transported; On the copper ring sliding bearing, runner is arranged, there is shunting action, coordinate shower nozzle to form double-deck jet; The copper ring sliding bearing coordinates screw rod to rotate in barrel, also drives the shower nozzle rotation, and molten polymer is uniformly distributed along shower nozzle.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, be provided with shunting material road, reduced flow, the charge door vertical feeding, three grades of heating collars by the barrel outer wall, by the polymer heating and melting, molten polymer flows in the barrel inner chamber, molten polymer is divided into 16 strands by the copper ring sliding bearing, uniform eight one-level runners in the copper ring sliding bearing, eight one-level runners are divided into again 16 secondary runners, 16 secondary runners are divided into two groups, eight runners are respectively arranged, one group is the inner ring runner, another group is the outer ring runner, melt flows to respectively the shower nozzle ectonexine conical surface by the Internal and external cycle runner.Shower nozzle is copper ring sliding bearing lower end immediately, core for this device, be divided into inside and outside two-layer, the melt flowed down through the outer ring runner is uniformly distributed on the outer conical surface of shower nozzle, constantly along conical surface whereabouts attenuate, there is lower annular channel the shower nozzle upper end, uniform eight vertical runners on lower annular channel, and these eight vertical runners lead to the shower nozzle internal layer conical surface.Lower annular channel on shower nozzle and the upper annular channel on the copper ring sliding bearing match and form a complete annular channel, are communicated with whole internal layer melt flow channel.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, the bottom face of its shower nozzle adopts the turnning and milling method to mill for petal, and the arc junction of petal is smooth transition, prevents that tip from causing taylor cone to assemble and causing spinning efficiency to reduce.The petal shower nozzle by bilayer, the individual layer spinning is converted into to double-deck spinning, enlarge the area that forms taylor cone, not only improved spinning efficiency, and, under same traffic, be divided into a plurality of outlets, flow is further reduced, melt liquid film on two-layer shower nozzle is thinner, and the melt fiber of formation is more very thin.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, can be used for the melt spinning of the polymer beads such as Powdered, granular, also can be used for the solution spinning.When being melt spinning, in order to prevent that polymer beads from occurring to build bridge or be bonded in porch to fall, a material scraping plate of screw rod upper end welding, be shaped as right-angled trapezium, its hypotenuse coordinates with the charge door inner face, gradient is identical, while making material scraping plate with bolt rotary, the material of porch is effectively scraped.When being the solution spinning, do not need to open heater.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, the driven by motor bolt rotary can effectively be controlled spinning conveying amount, thereby controls flow, drives the shower nozzle rotation simultaneously, even spinning flow; Multi-stage diffluence and shower nozzle rotation, not only can effectively control flow, can obtain more carefully more uniform fiber, and petal shower nozzle can improve spinning efficiency simultaneously.
The accompanying drawing explanation
Fig. 1 is the cutaway view of general assembly drawing of the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 2 is the top view of blanking tube in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 3 is the A-A echelon sectional view of blanking tube in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 4 is the front view full sectional view of shower nozzle in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 5 is the top view of shower nozzle in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 6 is the front view full sectional view of copper ring sliding bearing in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 7 is the upward view of copper ring sliding bearing in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
Fig. 8 is the structural representation of screw rod in the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention.
In figure: 1-motor, 2-shaft coupling, 3-stay bolt, the upper barrel of 4-, 5-screw rod, 6-heating collar, 7-copper ring sliding bearing, 8-blanking tube, 9-shower nozzle, the 10-temperature sensor, 11-lag bolt, 12-upper bearing (metal) hole, 13-barrel inner chamber, 14-charge door, 15-lower bearing hole, 16-shower nozzle screw thread, the outer conical surface of 17-shower nozzle, the 18-shower nozzle internal layer conical surface, the vertical runner of 19-, the upper annular channel of 20-, annular channel under 21-, 22-inner ring runner, 23-outer ring runner, 24-one-level runner, contact-making surface in 25-, the 26-material scraping plate, the 27-screw flight.
The specific embodiment
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, as shown in Figure 1, this device mainly comprises motor 1, shaft coupling 2, upper barrel 4, screw rod 5, heating collar 6, copper ring sliding bearing 7, blanking tube 8, shower nozzle 9, receiving system 28 and HV generator 29.Its course of work is that motor 1 drive screw rod 5 rotates in barrel, drive shower nozzle 9 rotates simultaneously, molten polymer is uniformly distributed on the two-layer wall of shower nozzle 9, open HV generator 29, under the voltage effect, molten polymer forms taylor cone on petal, increases voltage, taylor cone sprays and forms jet, falls receiving system 28 and forms fiber.
The electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer of the present invention, at first, three heating collars 6 are set in respectively to basic, normal, high three temperature shelves, can regulate according to actual needs temperature, in assurance, barrel 4 and blanking tube 8 are heated to preset temperature, upper barrel 4 is connected by four uniform lag bolts 11 with blanking tube 8, as shown in Figures 2 and 3.Temperature sensor 10 directly is connected with temperature control box, and temperature is passed to temperature control box, and temperature control box is for controlling heating-up temperature and regulating.After temperature is heated to preset temperature, open motor 1, motor 1 is connected by stay bolt 3 with upper barrel 4, screw rod 5 is connected with motor 1 by shaft coupling 2, high molecular polymer is added in upper barrel 4 by charge door 14, material scraping plate 26 on screw rod 5 can be scraped high molecular polymer from charge door 14, prevents to build bridge and the bonding phenomenon.Then the polymer of melting rotates and transports by screw rod 5, from the downward charging of barrel inner chamber 13, and the further melting of polymer melt, mobility strengthens.When polymer melt moves between upper barrel 4 and blanking tube 8, will flow downward by the one-level runner 24 of copper ring sliding bearing 7, polymer melt flows through the rear shunting of one-level runner 24, flows to inner ring runner 22 and outer ring runner 23, as shown in Figure 6 and Figure 7.Upper barrel 4 is connected by lag bolt 11 with blanking tube 8, make the sealing of whole device good, copper ring sliding bearing 7 is installed between upper barrel 4 and blanking tube 8, the lower end of copper ring sliding bearing 7 and lower bearing hole 15 interference fit, the upper end of copper ring sliding bearing 7 and upper bearing (metal) hole 12 interference fit, the multiaspect cooperation makes copper ring sliding bearing 7 accurately locate.The interior contact-making surface 25 of copper ring sliding bearing 7 and screw rod 5 matched in clearance, form a sliding pair, and polymer melt also has certain lubrication to it.When the melt in outer ring runner 23 continues down to flow to shower nozzle 9, gradually stretch and form the ground floor liquid film by the outer conical surface 17 of the shower nozzle on shower nozzle 9, the annular channel redistribution that the upper annular channel 20 of the melt process shower nozzle 9 in inner ring runner 22 and the lower annular channel 21 of copper ring sliding bearing 7 form, flow to 8 vertical runners 19.Vertically the melt-flow in runner 19 is to the shower nozzle internal layer conical surface 18, Uniform Tension attenuate again, form second layer liquid film on the shower nozzle internal layer conical surface 18, the inside and outside two-layer end face of shower nozzle 9 mills out the shape of petal with milling cutter, the arc transition of petal is round and smooth, there is no wedge angle, thereby increases the hoop area that forms taylor cone, can produce more multiple fibre, the shape of shower nozzle 9 and runner distribute as shown in Figure 4 and Figure 5.Treat that runner is full of molten polymer, open HV generator 29, high-tension electricity is added in receiving system 28, constantly increase voltage, treat that double-deck petal shower nozzle edge liquid film forms taylor cone, continue to increase voltage, taylor cone forms jet, sprays to receiving system 28, and constantly solidify to form fiber.Match fixingly due to the screw flight 27 of screw rod 5 and shower nozzle screw thread 16 in this process, when screw rod 5 rotates, drive shower nozzle 9 uniform rotation together, be conducive to being uniformly distributed and attenuate of melt, thus the fiber that makes spinning more evenly, more very thin.In the situation that do not heat, also can be used for the electrostatic spinning of the unclassified stores such as solution.
Claims (4)
1. the electrostatic spinning apparatus of the petal shower nozzle of bilayer, it is characterized in that: mainly comprise motor, shaft coupling, upper barrel, blanking tube, receiving system, HV generator, shower nozzle, heater, screw rod, copper ring sliding bearing and temperature sensor, motor is connected by stay bolt with upper barrel, by motor support in upper barrel top; Upper barrel is connected by four uniform lag bolts with blanking tube; The screw rod upper end is connected with motor by shaft coupling, the screw rod lower end is placed in the inner chamber of barrel and blanking tube, copper ring sliding bearing, the lower end of copper ring sliding bearing and lower bearing hole interference fit, the upper end of copper ring sliding bearing and upper bearing (metal) hole interference fit are installed between upper barrel and blanking tube; The interior contact-making surface of copper ring sliding bearing and screw clearance coordinate; Shower nozzle and screw rod are for being threaded, and a bolt rotary part plays the conveying effect, and a part drives the shower nozzle rotation; Heater adopts heating collar, minute three grades of heating; HV generator is connected with receiving system, and temperature sensor transmits temperature, and external temperature control box is controlled temperature; On the copper ring sliding bearing, runner is arranged, there is shunting action, coordinate shower nozzle to form double-deck jet; The bottom face of shower nozzle adopts the turnning and milling method to mill for petal, and the arc junction of petal is smooth transition.
2. the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer according to claim 1, is characterized in that: the stepper motor that motor is adjustable speed.
3. the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer according to claim 1, it is characterized in that: molten polymer is divided into 16 strands by the copper ring sliding bearing, uniform eight one-level runners in the copper ring sliding bearing, eight one-level runners are divided into again 16 secondary runners, 16 secondary runners are divided into two groups, and eight runners are respectively arranged, and one group is the inner ring runner, another group is the outer ring runner, and melt flows to respectively the shower nozzle ectonexine conical surface by the Internal and external cycle runner; Shower nozzle is copper ring sliding bearing lower end immediately, be divided into inside and outside two-layer, the melt flowed down through the outer ring runner is uniformly distributed on the outer conical surface of shower nozzle, constantly along conical surface whereabouts attenuate, there is lower annular channel the shower nozzle upper end, uniform eight vertical runners on lower annular channel, these eight vertical runners lead to the shower nozzle internal layer conical surface; Lower annular channel on shower nozzle and the upper annular channel on the copper ring sliding bearing match and form a complete annular channel, are communicated with whole internal layer melt flow channel.
4. the electrostatic spinning apparatus of the petal shower nozzle of a kind of bilayer according to claim 1 is characterized in that: a material scraping plate of screw rod upper end welding, be shaped as right-angled trapezium, and its hypotenuse coordinates with the charge door inner face, and gradient is identical.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103696026A (en) * | 2013-12-27 | 2014-04-02 | 北京化工大学 | Controllable vibration electrostatic spinning device |
| CN103924309A (en) * | 2014-05-03 | 2014-07-16 | 北京化工大学 | Melt electrostatic spinning sprayer suitable for high-viscosity high-melting-point polymers |
| CN104928769A (en) * | 2015-07-13 | 2015-09-23 | 北京化工大学 | Spinning feeding and spinning system with double-layer material barrel and sectional type spinning nozzles |
| CN105543985A (en) * | 2016-01-29 | 2016-05-04 | 佛山轻子精密测控技术有限公司 | Gap-adjustable electrostatic-spinning nozzle and array-type spinning system |
| CN108437637A (en) * | 2018-02-28 | 2018-08-24 | 华中科技大学 | A kind of spiral fluid channel electrofluid nozzle |
| CN108478861A (en) * | 2018-04-26 | 2018-09-04 | 华南理工大学 | The method for the cylinder single fiber of syringe needle, 3D printing with petal groove that 3D printing uses |
| CN109875115A (en) * | 2017-12-06 | 2019-06-14 | 贵州中烟工业有限责任公司 | A kind of quick-fried pearl two-phase flow dripper device of cigarette and the quick-fried pearl process equipment of cigarette |
| CN110257934A (en) * | 2019-06-26 | 2019-09-20 | 广东工业大学 | A kind of melting centrifugal spinning production equipment |
| CN110670155A (en) * | 2019-09-20 | 2020-01-10 | 上海松冒实业有限公司 | Petal-shaped nanofiber production device and method |
| CN114892291A (en) * | 2022-06-14 | 2022-08-12 | 绍兴山海纺织有限公司 | Composite FDY filament and production process thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696026A (en) * | 2013-12-27 | 2014-04-02 | 北京化工大学 | Controllable vibration electrostatic spinning device |
| CN103924309A (en) * | 2014-05-03 | 2014-07-16 | 北京化工大学 | Melt electrostatic spinning sprayer suitable for high-viscosity high-melting-point polymers |
| CN104928769A (en) * | 2015-07-13 | 2015-09-23 | 北京化工大学 | Spinning feeding and spinning system with double-layer material barrel and sectional type spinning nozzles |
| CN104928769B (en) * | 2015-07-13 | 2018-01-30 | 北京化工大学 | A kind of spinning feeding spinneret system for having double-deck barrel segmented shower nozzle |
| CN105543985A (en) * | 2016-01-29 | 2016-05-04 | 佛山轻子精密测控技术有限公司 | Gap-adjustable electrostatic-spinning nozzle and array-type spinning system |
| CN109875115A (en) * | 2017-12-06 | 2019-06-14 | 贵州中烟工业有限责任公司 | A kind of quick-fried pearl two-phase flow dripper device of cigarette and the quick-fried pearl process equipment of cigarette |
| CN109875115B (en) * | 2017-12-06 | 2022-02-18 | 贵州中烟工业有限责任公司 | Bead-blasting two-phase flow water dropper device for cigarettes and bead-blasting processing equipment for cigarettes |
| CN108437637B (en) * | 2018-02-28 | 2019-10-25 | 华中科技大学 | A kind of spiral fluid channel electrofluid spray head |
| CN108437637A (en) * | 2018-02-28 | 2018-08-24 | 华中科技大学 | A kind of spiral fluid channel electrofluid nozzle |
| CN108478861A (en) * | 2018-04-26 | 2018-09-04 | 华南理工大学 | The method for the cylinder single fiber of syringe needle, 3D printing with petal groove that 3D printing uses |
| CN108478861B (en) * | 2018-04-26 | 2021-03-30 | 华南理工大学 | Needle head used for 3D printing and method for 3D printing of cylindrical single fiber with petal-shaped groove |
| CN110257934A (en) * | 2019-06-26 | 2019-09-20 | 广东工业大学 | A kind of melting centrifugal spinning production equipment |
| CN110670155A (en) * | 2019-09-20 | 2020-01-10 | 上海松冒实业有限公司 | Petal-shaped nanofiber production device and method |
| CN110670155B (en) * | 2019-09-20 | 2021-10-01 | 上海松冒实业有限公司 | Petal-shaped nanofiber production device and method |
| CN114892291A (en) * | 2022-06-14 | 2022-08-12 | 绍兴山海纺织有限公司 | Composite FDY filament and production process thereof |
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Effective date of registration: 20210621 Address after: Building 5, China Shengze textile technology pioneer park, no.1188, West 2nd Ring Road, Shengze Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Jiangsu new vision advanced functional fiber Innovation Center Co.,Ltd. Address before: 100029 No.15, North Third Ring Road East, Chaoyang District, Beijing Patentee before: BEIJING University OF CHEMICAL TECHNOLOGY |
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