CN203498511U - Sheath gas heatable type focusing electric-spinning direct-writing nozzle device - Google Patents
Sheath gas heatable type focusing electric-spinning direct-writing nozzle device Download PDFInfo
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- CN203498511U CN203498511U CN201320642150.3U CN201320642150U CN203498511U CN 203498511 U CN203498511 U CN 203498511U CN 201320642150 U CN201320642150 U CN 201320642150U CN 203498511 U CN203498511 U CN 203498511U
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- inlet casing
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- feed liquor
- gas inlet
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Abstract
The utility model provides a sheath gas heatable type focusing electric-spinning direct-writing nozzle device and relates to an electric-spinning direct-writing jet-printing device. The sheath gas heatable type focusing electric-spinning direct-writing nozzle device is provided with a liquid inlet nozzle base, a gas inlet box body, a binding post, an electric heating element, a relay, a numerical control temperature unit and a temperature measurement element. The liquid inlet nozzle base is connected with the center of the gas inlet box body and fixed to the upper end face of the gas inlet box body. The lower portion of the liquid inlet nozzle base extends into a center through hole of the gas inlet box body. The binding post is arranged on the liquid inlet nozzle base. A radial liquid inlet hole is formed in the liquid inlet nozzle base. An axial nozzle portion is arranged at the lower end of the liquid inlet nozzle base. At least two axial connecting through holes are formed in the gas inlet box body. A radial gas inlet is formed in the gas inlet box body. An axial vent hole is formed in the lower end of the gas inlet box body. The gas inlet box body is provided with a support and two axial hollow binding holes. The electric heating element is arranged in a gas inlet hole. The temperature measurement element is arranged on the inner surface of the gas inlet hole. The temperature measurement element is connected with the numerical control temperature unit. The numerical control temperature unit is further connected with the relay. The relay is connected with the electric heating element.
Description
Technical field
The utility model relates to a kind of electrospinning direct-writing jet printing appts, and especially relating to a kind of sheath layer gas can focus on electrospinning direct-writing nozzle device by heating type.
Background technology
Electrospinning direct-writing based on electrohydraulic dynamic coupling is to utilize External Electrical Field in viscoelastic solution, and under the effect of electric field force, viscoelastic solution distortion obtains taylor cone; When electric field force continues to strengthen over solution surface tension, just there is jet to penetrate from taylor cone point; Utilize stability line jet to carry out the orderly spray printing preparation of micro-nano structure.Electrospinning direct-writing has overcome traditional electrical liquid coupling spray printing process jet spiral, crooked unsteady motion, and that utilizes that stability line jet carries out orderly micro-nano structure directly writes preparation.Directly write jet and carry electric charge from the ejaculation of taylor cone point, be subject to electrical charge rejection power, the effect of non-uniform electric field power will produce whip moving unstable, thereby affected the positioning precision of directly writing micro-nano structure.
Sheath layer gas focusing is that jet spray printing is controlled the new development trend of research, and starts to obtain application.Merging gas focusing and electric liquid coupling spray printing has become a kind of new mode of charged jet spray printing, has attracted researcher's extensive concern.Electrospinning direct-writing technology is introduced gas focusing, mainly utilize under Near Field in laminar condition around gas, reduce the relative velocity of spray printing process spinning jet and space medium, promote the stability that jet moves; The introducing of sheath gas simultaneously, the tensile force of gas flowfield has superposeed on the basis of electric field force, reduced and maintained the needed voltage magnitude that applies of jet injection, reduced the interference of jet destabilizing factor, for the accurate spray printing of jet, controlled a kind of new technological approaches is provided.
In order to carry out experimental study, make designing and developing of sheath layer gas focusing electrospinning direct-writing nozzle become a study hotspot, different gas focusing electrospinning nozzle structures has been proposed in Chinese patent 201210037687.7, but all parts of shower nozzle described in patent is still independent dispersion, gas liquid outlet face relative position is fixed, solution channel is capillary, internal diameter is non-adjustable, can not regulator solution passage and the axiality of aperture, be not easy to simplification and integrated the controlling of shower nozzle.The structure proposing in Chinese patent 201310020810.9, in use procedure, need all parts to carry out dismounting frequently, adjustment, although can adjust the axiality of solution channel and aperture, but centering is bad and adjust loaded down with trivial details, sheath temperature degree is uncontrollable, can not effectively control diameter and the morphosis of solvent evaporates and fiber.
Summary of the invention
The purpose of this utility model be to provide can make sheath layer around gas uniform be ejected in surrounding air, promote the stability of jet motion, can quick centring and a kind of sheath layer gas of effectively controlling solvent evaporates can focus on electrospinning direct-writing nozzle device by heating type.
The utility model is provided with feed liquor nozzle boss, air inlet casing, binding post, heating, relay, numerical control temperature unit, temperature element; Described feed liquor nozzle boss and air inlet casing are equipped with central through hole, and coaxially arrange; Feed liquor nozzle boss is threaded with the central through hole of air inlet casing, feed liquor nozzle boss is fixed in the upper end of air inlet casing, feed liquor nozzle boss bottom is stretched in the central through hole of air inlet casing, binding post is located on feed liquor nozzle boss, feed liquor nozzle boss is provided with radially inlet opening, and the lower end of feed liquor nozzle boss is provided with axial spray nozzle part; Air inlet casing is provided with at least 2 for the axial connecting through hole with outside installation, air inlet casing is provided with radial air inlet mouth, the lower end of air inlet casing is provided with Axial-running Out pore, air inlet casing is provided with the bracing frame for fixed number controlling temperature unit and relay, air inlet casing is provided with 2 axial hollow line holes, for the conductor part length being connected with heating with temperature element, wears; In air admission hole, be provided with heating, air admission hole inner surface is provided with temperature element; Temperature element is connected with numerical control temperature unit, and numerical control temperature unit is connected with relay again, and relay connects heating, forms temperature control unit.
The best outer surface of described spray nozzle part is provided with the tapering of 10 °～30 °.
The endoporus of the air outlet of described air inlet casing can be circular hole.
Described spray nozzle part and air outlet adopt conical surface centering, when the circular hole of the complete dieback air outlet of spray nozzle part outer surface, keep centering, during use, need the slight counter screw thread of backing out feed liquor nozzle boss make air outlet unimpeded, can realize quick centring.
Described temperature control unit comprises heating, temperature element, numerical control temperature unit, relay.Attemperating unit utilizes heating to do heater, thereby temperature element is delivered to the temperature signal on air admission hole inner surface, numerical control temperature unit is analyzed and carry make-and-break signal to control the duty of heating to relay.
When the utility model is used, binding post is connected with power supply, inlet opening connects external liquid supplying device, and air admission hole connects outside feeder, by outside collecting board and power cathode ground connection.And by collecting board be positioned over nozzle under.The solution tank of the liquid feed device that described inlet opening connects is equipped with Electrospun solution, the feeding rate of adjustable liquid feed device, and the feeder that described air admission hole connects is used for regulating admission pressure.The utility model can be realized the integrated fixing of sheath gas focusing electrospinning direct-writing nozzle and control, can heat sheath gas by temperature control unit and effectively control solvent evaporates, thereby use the good sheath layer that makes of the conical surface and circular hole centering around being ejected in surrounding air of gas uniform, promote the stability that jet moves.The unsteady motion of sheath layer air-flow constraint electrospinning direct-writing jet is stablized in the utility model utilization, utilize the effect of contraction of sheath layer gas to improve jet stability, at spinning Around Jet, form stable laminar flow structure, lower the relative velocity of jet and surrounding medium, suppressed the generation of jet unsteady motion.Sheath layer air-flow has stretching action to spinning jet, reduced the needed starting resistor of electrospinning direct-writing and injection and maintained voltage, reduced the interference that high voltage, large charge density causes and improved the stability that jet sprays; And the refinement that slightly jet has been accelerated in the stretching of layer air-flow has improved ejection efficiency.Meanwhile, the temperature of sheath layer air-flow is controlled, thereby can control diameter and morphosis and the mechanical property thereof of the volatilization of solution solvent and the refinement of jet control fiber.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the spray nozzle part of the utility model embodiment and the structural representation of the complete dieback centering of air outlet.
Fig. 3 is the anti-structural representation being screwed into after liquid nozzle boss makes air outlet unimpeded of the utility model embodiment.
In Fig. 1～3, be respectively labeled as: 1, feed liquor nozzle boss; 2, air inlet casing; 3, connecting through hole; 4, binding post; 5, inlet opening; 6, air admission hole; 7, heating; 8, relay; 9, bracing frame; 10, numerical control temperature unit; 11, line hole; 12, temperature element; 13, spray nozzle part; 14, air outlet.
The specific embodiment
Referring to Fig. 1～3, the utility model embodiment comprises feed liquor nozzle boss 1, air inlet casing 2, binding post 4, heating 7, relay 8, numerical control temperature unit 10, temperature element 12.Feed liquor nozzle boss 1 and air inlet casing 2 are equipped with central through hole, and coaxially arrange; Feed liquor nozzle boss 1 is threaded with the central through hole of air inlet casing 2, feed liquor nozzle boss 1 is fixed in the upper end of air inlet casing 2, feed liquor nozzle boss 1 bottom is stretched in the central through hole of air inlet casing 2, binding post 4 is located on feed liquor nozzle boss 1, feed liquor nozzle boss 1 is provided with radially inlet opening 5, and the lower end of feed liquor nozzle boss 1 is provided with axial spray nozzle part 13; Air inlet casing 2 is provided with at least 2 for the axial connecting through hole 3 with outside installation, air inlet casing 2 is provided with radial air inlet mouth 6, the lower end of air inlet casing 2 is provided with Axial-running Out pore 14, air inlet casing 2 is provided with the bracing frame 9 for fixed number controlling temperature unit 10 and relay 8, air inlet casing 2 is provided with 2 axial hollow line holes 11, for the conductor part length being connected with heating 7 with temperature element 12, wears; In air admission hole 6, be provided with heating 7, air admission hole 6 inner surfaces are provided with temperature element 12; Temperature element 12 is connected with numerical control temperature unit 10, and numerical control temperature unit 10 is connected with relay 8 again, and relay 8 connects heating 7, forms temperature control unit.Described spray nozzle part 13 adopts conical surface centering with air outlet 14, when the circular hole of the complete dieback air outlet 14 of spray nozzle part 13 outer surface, keep centering, during use, need the slightly anti-screw thread of backing out to make air outlet 14 unimpeded, thereby obtain more uniform gas flowfield to keep the stability of jet and the accuracy of spray printing location.
The operation principle of the utility model embodiment is as follows:
When the utility model is used, binding post is connected with power supply (not drawing in the drawings), inlet opening connects external liquid supplying device (not drawing in the drawings), and air admission hole connects outside feeder (not drawing in the drawings), by outside collecting board (not drawing in the drawings) and power cathode ground connection.And by collecting board be positioned over nozzle under.The solution tank of the liquid feed device that described inlet opening connects is equipped with Electrospun solution, the feeding rate of adjustable liquid feed device, and the feeder that described air admission hole connects is used for regulating admission pressure.
Feed liquor nozzle boss 1 is threaded connection with air inlet casing 2; Spray nozzle part 13 adopts conical surface centering with air outlet 14, and during use, after first complete dieback air outlet, slightly the anti-screw thread of backing out makes air outlet 14 unimpeded, thereby obtains more uniform gas flowfield to keep the stability of jet and the accuracy of spray printing location; Through hole 3 is for fixing whole ejecting device; Binding post 4 is threaded fixing with feed liquor nozzle boss 1, as extraction electrode; Inlet opening 5 connects external liquid supplying device, liquid supply speed while regulating experiment by liquid feed device, and air admission hole 6 connects outside feeder, gas pressure while regulating experiment by feeder; Heating 7 is placed in air admission hole 6, temperature element 12 is placed in air admission hole 6 inner surfaces, temperature element 12 is connected with numerical control temperature unit 10 wires by hollow line hole 11, numerical control temperature unit 10 is connected with relay 8 again, relay 8 connects heating 7, form temperature control unit, sheath temperature degree while regulating experiment by temperature control unit.
The utility model adopts conical surface centering to adjust the axiality of shower nozzle by spray nozzle part 13 and air outlet 14, liquid supply speed when the outside liquid feed device connecting of inlet opening 5 regulates electrospinning, air feed gas pressure when the feeder that air admission hole 6 connects regulates experiment, sheath temperature degree when the temperature control unit that the heating 7 in air admission hole 6 forms with the outside controlling temperature unit being connected 10 of temperature element 12 and relay 8 regulates experiment, the voltage when high voltage source that binding post 8 connects regulates electrospinning.
Claims (3)
1. sheath layer gas can focus on an electrospinning direct-writing nozzle device by heating type, it is characterized in that being provided with feed liquor nozzle boss, air inlet casing, binding post, heating, relay, numerical control temperature unit, temperature element; Described feed liquor nozzle boss and air inlet casing are equipped with central through hole, and coaxially arrange; Feed liquor nozzle boss is threaded with the central through hole of air inlet casing, feed liquor nozzle boss is fixed in the upper end of air inlet casing, feed liquor nozzle boss bottom is stretched in the central through hole of air inlet casing, binding post is located on feed liquor nozzle boss, feed liquor nozzle boss is provided with radially inlet opening, and the lower end of feed liquor nozzle boss is provided with axial spray nozzle part; Air inlet casing is provided with at least 2 for the axial connecting through hole with outside installation, air inlet casing is provided with radial air inlet mouth, the lower end of air inlet casing is provided with Axial-running Out pore, air inlet casing is provided with the bracing frame for fixed number controlling temperature unit and relay, air inlet casing is provided with 2 axial hollow line holes, for the conductor part length being connected with heating with temperature element, wears; In air admission hole, be provided with heating, air admission hole inner surface is provided with temperature element; Temperature element is connected with numerical control temperature unit, and numerical control temperature unit is connected with relay again, and relay connects heating, forms temperature control unit.
2. a kind of sheath layer gas can focus on electrospinning direct-writing nozzle device by heating type as claimed in claim 1, it is characterized in that described spray nozzle part outer surface is provided with the tapering of 10 °～30 °.
3. a kind of sheath layer gas can focus on electrospinning direct-writing nozzle device by heating type as claimed in claim 1, and the endoporus that it is characterized in that the air outlet of described air inlet casing is circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642150.3U CN203498511U (en) | 2013-10-17 | 2013-10-17 | Sheath gas heatable type focusing electric-spinning direct-writing nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642150.3U CN203498511U (en) | 2013-10-17 | 2013-10-17 | Sheath gas heatable type focusing electric-spinning direct-writing nozzle device |
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| Publication Number | Publication Date |
|---|---|
| CN203498511U true CN203498511U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642150.3U Expired - Fee Related CN203498511U (en) | 2013-10-17 | 2013-10-17 | Sheath gas heatable type focusing electric-spinning direct-writing nozzle device |
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| Country | Link |
|---|---|
| CN (1) | CN203498511U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484952A (en) * | 2013-10-17 | 2014-01-01 | 厦门大学 | Sheath gas heatable focus electrospinning direct-writing nozzle device |
| CN107345318A (en) * | 2017-08-29 | 2017-11-14 | 中鸿纳米纤维技术丹阳有限公司 | A kind of shower head mechanism for the production of dissolvant type nanofiber |
-
2013
- 2013-10-17 CN CN201320642150.3U patent/CN203498511U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484952A (en) * | 2013-10-17 | 2014-01-01 | 厦门大学 | Sheath gas heatable focus electrospinning direct-writing nozzle device |
| CN103484952B (en) * | 2013-10-17 | 2016-05-04 | 厦门大学 | Sheath layer gas can focus on electrospinning direct-writing nozzle device by heated type |
| CN107345318A (en) * | 2017-08-29 | 2017-11-14 | 中鸿纳米纤维技术丹阳有限公司 | A kind of shower head mechanism for the production of dissolvant type nanofiber |
| CN107345318B (en) * | 2017-08-29 | 2023-04-28 | 湖北省鄂龙工贸有限公司 | Spray head mechanism for solvent type nanofiber production |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20161017 |