CN203976987U - The even air feed flow passage structure of a kind of sheath layer air-flow - Google Patents
The even air feed flow passage structure of a kind of sheath layer air-flow Download PDFInfo
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- CN203976987U CN203976987U CN201420450286.9U CN201420450286U CN203976987U CN 203976987 U CN203976987 U CN 203976987U CN 201420450286 U CN201420450286 U CN 201420450286U CN 203976987 U CN203976987 U CN 203976987U
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Abstract
The even air feed flow passage structure of a kind of sheath layer air-flow, relates to the feeder of electrostatic spinning.Be provided with assist gas air inlet/outlet, shunt conduit, buffer air chamber, secondary air passage, air-flow buffer chamber, sheath gas pore array, spinning syringe needle and nozzle; Assist gas air inlet is connected with shunt conduit, and each shunt conduit is distributed on assist gas air inlet surrounding, and each shunt conduit is docked with each first-level buffer air chamber; On each first-level buffer air chamber, be provided with equably respectively a plurality of one-level secondary air passages and be connected to level 2 buffering air chamber; On level 2 buffering air chamber, be evenly provided with respectively a plurality of secondary secondary air passages and be connected to air-flow buffer chamber; A plurality of sheath gas pore arrays are distributed on below, air-flow buffer chamber, and sheath gas pore array is connected to assist gas gas outlet; In air-flow buffer chamber, be provided with spinning syringe needle, the quantity of spinning syringe needle is corresponding one by one with the quantity of pore in sheath gas pore array; Spinning-nozzle on spinning syringe needle is in sheath gas pore array in pore.
Description
Technical field
The utility model relates to the feeder of electrostatic spinning, especially relates to the even air feed flow passage structure of a kind of sheath layer air-flow for electrostatic spinning.
Background technology
In recent years, electrostatic spinning technique with its continuously, easily and fast, technique feature simple, with low cost become gradually nanofiber manufacture mainstream technology; Electrostatic spinning nano fiber has the many advantages such as pattern is controlled, more long-pending greatly than table, good permeability, and oneself is applied widely in fields such as filtering material, protective materials, zymophore, sensor films.Improve electrostatic spinning nano fiber production, realize many jets spray be the research emphasis of accelerating at present electrostatic spinning commercial application (J.C.Almekinders and C.Jones.Multiple jet electrohydrodynamic spraying and applications[J] .J.Aerosol.Sci., 1999,17:969-971).Multiinjector spinning spray be realize the spinning of many jet flow static electricities the simplest with means easily.In electrostatic spinning, on spinning-nozzle, being loaded with high-pressure electrostatic spins, between each shower nozzle, easily producing electric field suppresses to disturb, and space electric field skewness and cause the spray regime of each shower nozzle inconsistent, is difficult to ensure that each nozzle carries out continual and steady jet simultaneously and sprays; Moreover the electrostatic repulsion between jet has also increased the unstability of jet, thereby cause the nanofiber shape size of acquisition that each shower nozzle sprays widely different, affected the raising of prepared nanofiber quality.
By introducing secondary air (Zhmayev E., ChoD., Joo Y.L.Nanofibers from gas-assisted polymer melt electrospinning[J] .Polymer, 2010,51 (18): 4140-4144), utilize the tensile force of assist gas to accelerate electrostatic spinning speed, can further improve electrostatic spinning efficiency, and further refinement nanofiber, reduces electro spinning nano fiber diameter.Secondary air passes through sheath gas pore focussing force in jet in lower floor, in jet course of injection, play rectified action, weaken the repulsive interaction between jet, improve jet jetting stability, promote electro spinning nano fiber being uniformly distributed on collecting board, improve electrostatic spinning nano fiber quality.
Improving the uniformity of each nozzle surrounding sheath layer air-flow, guarantee that each nozzle carries out Uniform jet injection under the stretching action of same or similar sheath layer air-flow, is the emphasis of secondary air electrostatic spinning technique research.
Summary of the invention
The purpose of this utility model aims to provide the uniformity that can promote each nozzle surrounding secondary air, sprays the even air feed flow passage structure of a kind of sheath layer air-flow of air feed demand to adapt to large area assist gas electrostatic spinning.
The utility model is provided with assist gas air inlet, shunt conduit, first-level buffer air chamber, one-level secondary air passage, level 2 buffering air chamber, secondary secondary air passage, air-flow buffer chamber, sheath gas pore array, assist gas gas outlet, spinning syringe needle, spinning-nozzle;
Described assist gas air inlet is connected with outside feeder, and assist gas air inlet is connected with a plurality of shunt conduit, and each shunt conduit is evenly distributed on assist gas air inlet surrounding, and each shunt conduit and each first-level buffer air chamber connect one to one; On each first-level buffer air chamber, be provided with equably respectively a plurality of one-level secondary air passages and be connected to level 2 buffering air chamber; On level 2 buffering air chamber, be evenly provided with respectively a plurality of secondary secondary air passages and be connected to air-flow buffer chamber; A plurality of sheath gas pore arrays are distributed on below, air-flow buffer chamber, and sheath gas pore array is connected to assist gas gas outlet; In air-flow buffer chamber, be provided with spinning syringe needle, the quantity of spinning syringe needle is corresponding one by one with the quantity of pore in sheath gas pore array; Spinning-nozzle on spinning syringe needle is in sheath gas pore array in pore.
Described spinning syringe needle is equally spaced.
Sheath gas pore forms sleeve configuration gas passage by the frustum of a cone and cylinder and coaxially assembles with spinning syringe needle and spinning-nozzle.
Between described buffer air chamber and air-flow buffer chamber, can be provided with dividing plate.
Described spinning-nozzle can adopt ordinary syringe syringe needle, and each syringe needle below is equipped with sheath gas air hole structure, and sheath gas pore forms sleeve configuration gas passage by taper platform and cylinder two parts, coaxially arranged with spinning syringe needle.
The Nodes of described shunt conduit can separate a plurality of bypass line, and the length of each bypass line can be identical and symmetrical.
The utility model provides a kind of assist gas runner structure for extensive electrostatic spinning, realizes multiple spinning-nozzles being uniformly distributed of assist gas flow velocity around, to reach the evenly object of constraint of electrostatic spinning jet.For realizing the even shunting of assist gas, runner of the present utility model is preferably arranged symmetrically with.Assist gas air inlet is connected with outside feeder, and assist gas is flowed into by the assist gas air inlet place that is arranged in air flue top, in the downward transmitting procedure of assist gas, shunts by shunt conduit.Each shunt conduit node is provided with two laterals, and lateral length is identical and be arranged symmetrically with, to realize the downward uniform transmission of secondary air.
Assist gas enters first-level buffer air chamber after shunt conduit.For reducing the interference between secondary air, control the flow velocity of assist gas, in first-level buffer air chamber, be provided with dividing plate, each shunt conduit corresponds respectively to a buffer area, is placed in the center in this region.After the effect of first-level buffer air chamber, gas outlet quantity increases to four times of shunt conduit quantity, and wherein every four gas outlets are one group, centered by corresponding air inlet along the equidistant array arrangement of diagonal.
According to spinning syringe needle quantity, multi-stage diffluence pipeline and multilayer buffer air chamber can be set, different layers buffer air chamber can adopt diaphragm structure according to actual conditions, also can be an Integral air chamber.The gas outlet quantity of every one deck buffer air chamber is all set to four times of air inlet quantity, and wherein four gas outlets are one group, centered by corresponding air inlet along the equidistant array arrangement of diagonal.Assist gas transmission, to there being secondary air passage, is accelerated in each gas outlet, improves the uniformity that assist gas distributes at next stage structure porch gas flow rate.
Electrostatic spinning nozzle adopts ordinary syringe syringe needle, and each syringe needle below is equipped with sheath gas air hole structure, and sheath gas pore forms sleeve configuration gas passage by taper platform and cylinder two parts, coaxially arranged with spinning syringe needle.Sleeve configuration gas passage can play focussing force to secondary air, thereby realizes the constraint to electrostatic spinning jet, to weaken the electrostatic repulsion between electrostatic spinning jet.
The utility model is by the assist gas runner of the extensive electrostatic spinning of design; contribute to reduce the Coulomb repulsion of many jets in electrostatic spinning process; realizing the many jets of many shower nozzles sprays; can reduce the unstability of jet in electrostatic spinning process; accelerate the speed of electrostatic spinning; improve electrostatic spinning efficiency, improve the quality of electrostatic spinning nano fiber, promote the large-scale production of electrostatic spinning nano fiber.
In order to improve electrostatic spinning efficiency, reduce the unstability of electrostatic spinning jet, reduce the electrostatic repulsion between many jets, the utility model provides a kind of assist gas runner structure for extensive electrostatic spinning.This structure has realized multiple spinning-nozzles being uniformly distributed of assist gas flow velocity around, assist gas after sheath gas pore focuses on acts on electrostatic spinning jet, reduce the electrostatic repulsion between jet, reduce the unstability of electrostatic spinning jet, accelerate electrostatic spinning speed, improve the efficiency of electrostatic spinning, improve electrostatic spinning nano fiber quality.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the front view of the utility model embodiment.
Fig. 3 is the position relationship schematic diagram of air-flow buffer chamber, sheath gas pore array and the spinning syringe needle of the utility model embodiment.
Fig. 4 is the enlarged drawing of the sheath gas pore of the utility model embodiment.
Fig. 5 is the sheath gas pore array arrangement schematic diagram of the utility model embodiment.
In Fig. 1, be respectively labeled as: 1. assist gas air inlet, 2. shunt conduit, 3. first-level buffer air chamber, 4. one-level secondary air passage, 5. level 2 buffering air chamber, 6. secondary secondary air passage, 7. air-flow buffer chamber, 8. sheath gas pore array, 9. assist gas gas outlet, 10. spinning syringe needle, 11. spinning-nozzles.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Referring to Fig. 1～5, the utility model embodiment is provided with assist gas air inlet 1, shunt conduit 2, first-level buffer air chamber 3, one-level secondary air passage 4, level 2 buffering air chamber 5, secondary secondary air passage 6, air-flow buffer chamber 7, sheath gas pore array 8, assist gas gas outlet 9, spinning syringe needle 10, spinning-nozzle 11.
Described assist gas air inlet 1 is connected with outside feeder, assist gas air inlet 1 is connected with a plurality of shunt conduit 2, each shunt conduit 2 is evenly distributed on assist gas air inlet 1 surrounding, and each shunt conduit 2 connects one to one with each first-level buffer air chamber 3; On each first-level buffer air chamber 3, be provided with equably respectively a plurality of one-level secondary air passages 4 and be connected to level 2 buffering air chamber 5; On level 2 buffering air chamber 5, be evenly provided with respectively a plurality of secondary secondary air passages 6 and be connected to air-flow buffer chamber 7; A plurality of sheath gas pore arrays 8 are distributed on 7 belows, air-flow buffer chamber, and sheath gas pore array 8 is connected to assist gas gas outlet 9; In air-flow buffer chamber 7, be provided with spinning syringe needle 10, the quantity of spinning syringe needle 10 is corresponding one by one with the quantity of pore in sheath gas pore array 8; Spinning-nozzle 11 on spinning syringe needle 10 is in sheath gas pore array 8 in pore.
Described spinning syringe needle is equally spaced.
Sheath gas pore forms sleeve configuration gas passage by the frustum of a cone and cylinder and coaxially assembles with spinning syringe needle and spinning-nozzle.
Between described buffer air chamber and air-flow buffer chamber, can be provided with dividing plate.
Described spinning-nozzle can adopt ordinary syringe syringe needle, and each syringe needle below is equipped with sheath gas air hole structure, and sheath gas pore forms sleeve configuration gas passage by taper platform and cylinder two parts, coaxially arranged with spinning syringe needle.
The Nodes of described shunt conduit can separate a plurality of bypass line, and the length of each bypass line can be identical and symmetrical.
In Fig. 1, assist gas is flowed into by assist gas air inlet 1 place, shunts through shunt conduit 2.Be provided with in the present embodiment two-stage shunting pipeline, every pipeline is provided with Liang Ge branch, and length is identical and be arranged symmetrically with.Assist gas is evenly flowed out by 4 gas outlets after shunt conduit 2,4 gas outlet equidistant symmetry arrangement centered by assist gas air inlet 1.After pipeline shunt, assist gas enters first-level buffer air chamber 3, in first-level buffer air chamber 3, be furnished with diaphragm structure, be 4 large symmetrical regions such as grade by spatial division, each region is the air inlet as first-level buffer air chamber 3 corresponding to a gas outlet of shunt conduit 2, and centered by this air inlet.First-level buffer air chamber 3 is provided with 16 gas outlets, and respectively there are 4 gas outlets in each region, respectively centered by the air inlet in this region along the equidistant symmetry arrangement of diagonal.After the cushioning effect of first-level buffer air chamber 3, assist gas by one-level assist gas passage 4 uniform-flows to level 2 buffering air chamber 5.One-level assist gas passage 4 has 16, corresponds respectively to 16 gas outlets of first-level buffer air chamber 3, and the gas outlet of one-level assist gas passage 4 is as the air inlet of level 2 buffering air chamber 5.Level 2 buffering air chamber 5 is provided with diaphragm structure corresponding to first-level buffer air chamber, is divided into 4 regions.First-level buffer gas passage 4 is divided into 4 groups respectively to level 2 buffering air chamber 5 air feed, and 4 air inlets are arranged symmetrically with, and gas outlet quantity increases to 64, and every tetrad is corresponding to an air inlet, centered by this air inlet along the equidistant array arrangement of diagonal.Assist gas is after two-stage shunting pipeline and the effect of two-stage buffer air chamber, have 64 through secondary assist gas passage 6 uniform-flows to gas buffer chamber 7. secondary assist gas passages 6,64 gas outlets of correspondence and level 2 buffering air chamber 5 respectively, the gas outlet of secondary assist gas passage 6 is as the air inlet in air-flow buffer chamber 7.Air-flow buffer chamber 7 is arranged in around spinning syringe needle 10, and 4 spinning syringe needles 10 are one group, and each air inlet is positioned at corresponding 4 the spinning syringe needle 10 centers of institute.In this embodiment, have the spinning syringe needle 10 of 256 equidistant array distribution, can greatly improve electrostatic spinning efficiency, realize the batch production of electrostatic spinning nano fiber.Assist gas is flowed through behind air-flow buffer chamber 7 and is focused on sheath gas pore array 8, sheath gas pore forms sleeve configuration gas passage by taper platform and cylinder two parts, coaxially arranged with spinning syringe needle, contribute to assist gas to constrain in around spinning-nozzle 11, effectively reduce the repulsive interaction between charged jet, improve jet jetting stability.Assist gas warp after sheath gas pore array 8 flows out is discharged by assist gas gas outlet 9.Assist gas is uniformly distributed in around spinning-nozzle after transmitting via this runner, can, to the effective effect of contraction of spinning jet generation, weaken the repulsive interaction between jet, weaken the unstability in jet course of injection, improve electrostatic spinning efficiency, improve the quality of gained nanofiber.
In figure, the assembly relation of all parts is as follows: assist gas air inlet 1 is connected with a plurality of shunt conduit 2, and each shunt conduit 2 is evenly distributed on assist gas air inlet 1 surrounding, to guarantee that secondary air is uniformly distributed; Each shunt conduit 2 connects one to one with each first-level buffer air chamber 3; On each first-level buffer air chamber 3, be provided with equably respectively a plurality of one-level secondary air passages 4 and be connected to level 2 buffering air chamber 5; On level 2 buffering air chamber 5, be evenly provided with respectively a plurality of secondary secondary air passages 6 and be connected to air-flow buffer chamber 7; Air-flow buffer chamber 7 is provided with a plurality of sheath gas pore arrays 8, and sheath gas pore array 8 is uniformly distributed below air-flow buffer chamber 7; Sheath gas pore array 8 is connected to assist gas gas outlet 9; In air-flow buffer chamber 7, be provided with spinning syringe needle 10, the quantity of spinning syringe needle 10 is corresponding one by one with the quantity of pore in sheath gas pore array 8; Spinning-nozzle 11 on spinning syringe needle 10 in the middle of pore, belongs to centered assembling in sheath gas pore array 8.Multiple spinning syringe needles 11 belong to equidistant array distribution; Sheath gas pore in sheath gas pore array 8 forms sleeve configuration gas passage by the frustum of a cone and cylinder, coaxially assembles with spinning syringe needle 10; First-level buffer air chamber 3, level 2 buffering air chamber 5 and air-flow cushion chamber 7 can be provided with different diaphragm structures, also can be an Integral air chamber.
Shunt conduit in figure and buffer air chamber, can be according to actual ejection Demand Design multi-stage diffluence pipeline and buffer air chamber.
Shunt conduit can separate a plurality of bypass line at Nodes, and each bypass line length is identical and symmetrical.
Claims (6)
1. the even air feed flow passage structure of sheath layer air-flow, is characterized in that being provided with assist gas air inlet, shunt conduit, first-level buffer air chamber, one-level secondary air passage, level 2 buffering air chamber, secondary secondary air passage, air-flow buffer chamber, sheath gas pore array, assist gas gas outlet, spinning syringe needle, spinning-nozzle;
Described assist gas air inlet is connected with outside feeder, and assist gas air inlet is connected with a plurality of shunt conduit, and each shunt conduit is evenly distributed on assist gas air inlet surrounding, and each shunt conduit and each first-level buffer air chamber connect one to one; On each first-level buffer air chamber, be provided with equably respectively a plurality of one-level secondary air passages and be connected to level 2 buffering air chamber; On level 2 buffering air chamber, be evenly provided with respectively a plurality of secondary secondary air passages and be connected to air-flow buffer chamber; A plurality of sheath gas pore arrays are distributed on below, air-flow buffer chamber, and sheath gas pore array is connected to assist gas gas outlet; In air-flow buffer chamber, be provided with spinning syringe needle, the quantity of spinning syringe needle is corresponding one by one with the quantity of pore in sheath gas pore array; Spinning-nozzle on spinning syringe needle is in sheath gas pore array in pore.
2. the even air feed flow passage structure of a kind of sheath layer air-flow as claimed in claim 1, is characterized in that described spinning syringe needle is equally spaced.
3. the even air feed flow passage structure of a kind of sheath layer air-flow as claimed in claim 1, is characterized in that sheath gas pore forms sleeve configuration gas passage by the frustum of a cone and cylinder and coaxially assembles with spinning syringe needle and spinning-nozzle.
4. the even air feed flow passage structure of a kind of sheath layer air-flow as claimed in claim 1, is characterized in that being provided with dividing plate between described buffer air chamber and air-flow buffer chamber.
5. the even air feed flow passage structure of a kind of sheath layer air-flow as claimed in claim 1, it is characterized in that described spinning-nozzle adopts ordinary syringe syringe needle, each syringe needle below is equipped with sheath gas air hole structure, sheath gas pore forms sleeve configuration gas passage by taper platform and cylinder two parts, coaxially arranged with spinning syringe needle.
6. the even air feed flow passage structure of a kind of sheath layer air-flow as claimed in claim 1, is characterized in that the Nodes of described shunt conduit separates a plurality of bypass line, and the length of each bypass line is identical and symmetrical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420450286.9U CN203976987U (en) | 2014-08-11 | 2014-08-11 | The even air feed flow passage structure of a kind of sheath layer air-flow |
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| CN201420450286.9U CN203976987U (en) | 2014-08-11 | 2014-08-11 | The even air feed flow passage structure of a kind of sheath layer air-flow |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040122A (en) * | 2015-08-28 | 2015-11-11 | 厦门大学 | Nanofiber sedimentation device |
| CN106123584A (en) * | 2016-06-30 | 2016-11-16 | 中国电子科技集团公司第四十八研究所 | Sintering furnace air-flow buffer device |
| CN107142530A (en) * | 2017-03-21 | 2017-09-08 | 广东工业大学 | Electrospinning device and its shower nozzle with the positive nozzle pitch of truncated rectangular pyramids nine of auxiliary electrode |
| CN108221066A (en) * | 2016-12-22 | 2018-06-29 | 南京理工大学 | It is a kind of based on pneumatic electrostatic spinning apparatus |
| CN108721705A (en) * | 2017-04-20 | 2018-11-02 | 南京理工大学 | Preparation method based on pneumatic 3D graphene oxide doped nano fiber scaffolds |
| CN108914219A (en) * | 2018-07-16 | 2018-11-30 | 绍兴百慧科技有限公司 | A kind of electrostatic spinning atmosphere control device |
| CN108950700A (en) * | 2017-05-19 | 2018-12-07 | 南京理工大学 | A kind of electrostatic spinning apparatus and method preparing fluffy state nanofiber |
| CN109267160A (en) * | 2018-11-06 | 2019-01-25 | 厦门大学 | A kind of arcuate array electrostatic spinning nozzle with the constraint of sheath gas |
| CN109537079A (en) * | 2019-01-29 | 2019-03-29 | 绍兴山海纺织有限公司 | A kind of production equipment of dacron thread |
| CN110257961A (en) * | 2019-06-27 | 2019-09-20 | 东华大学 | A kind of hazardous solvent collection device of scale electrostatic spinning nano fiber |
| CN111763995A (en) * | 2020-07-06 | 2020-10-13 | 厦门纳莱科技有限公司 | Electrostatic spinning equipment applied to roll-to-roll flexible base material |
| CN116356434A (en) * | 2023-02-02 | 2023-06-30 | 厦门净境新材料科技有限公司 | Electrostatic spinning composite spray head |
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- 2014-08-11 CN CN201420450286.9U patent/CN203976987U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040122A (en) * | 2015-08-28 | 2015-11-11 | 厦门大学 | Nanofiber sedimentation device |
| CN106123584A (en) * | 2016-06-30 | 2016-11-16 | 中国电子科技集团公司第四十八研究所 | Sintering furnace air-flow buffer device |
| CN106123584B (en) * | 2016-06-30 | 2018-07-24 | 中国电子科技集团公司第四十八研究所 | Sintering furnace air-flow buffer device |
| CN108221066A (en) * | 2016-12-22 | 2018-06-29 | 南京理工大学 | It is a kind of based on pneumatic electrostatic spinning apparatus |
| CN107142530A (en) * | 2017-03-21 | 2017-09-08 | 广东工业大学 | Electrospinning device and its shower nozzle with the positive nozzle pitch of truncated rectangular pyramids nine of auxiliary electrode |
| CN108721705A (en) * | 2017-04-20 | 2018-11-02 | 南京理工大学 | Preparation method based on pneumatic 3D graphene oxide doped nano fiber scaffolds |
| CN108950700A (en) * | 2017-05-19 | 2018-12-07 | 南京理工大学 | A kind of electrostatic spinning apparatus and method preparing fluffy state nanofiber |
| CN108914219A (en) * | 2018-07-16 | 2018-11-30 | 绍兴百慧科技有限公司 | A kind of electrostatic spinning atmosphere control device |
| CN109267160A (en) * | 2018-11-06 | 2019-01-25 | 厦门大学 | A kind of arcuate array electrostatic spinning nozzle with the constraint of sheath gas |
| CN109267160B (en) * | 2018-11-06 | 2019-12-27 | 厦门大学 | Arc array electrostatic spinning nozzle with sheath gas restraint |
| CN109537079A (en) * | 2019-01-29 | 2019-03-29 | 绍兴山海纺织有限公司 | A kind of production equipment of dacron thread |
| CN109537079B (en) * | 2019-01-29 | 2024-01-19 | 绍兴山海纺织有限公司 | Production equipment of polyester yarns |
| CN110257961A (en) * | 2019-06-27 | 2019-09-20 | 东华大学 | A kind of hazardous solvent collection device of scale electrostatic spinning nano fiber |
| CN110257961B (en) * | 2019-06-27 | 2020-10-20 | 东华大学 | Harmful solvent collecting device for large-scale electrostatic spinning nano-fibers |
| CN111763995A (en) * | 2020-07-06 | 2020-10-13 | 厦门纳莱科技有限公司 | Electrostatic spinning equipment applied to roll-to-roll flexible base material |
| CN116356434A (en) * | 2023-02-02 | 2023-06-30 | 厦门净境新材料科技有限公司 | Electrostatic spinning composite spray head |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |