CN203498512U - Electrostatic spinning knockout and electrostatic spinning machine - Google Patents
Electrostatic spinning knockout and electrostatic spinning machine Download PDFInfo
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- CN203498512U CN203498512U CN201320348451.5U CN201320348451U CN203498512U CN 203498512 U CN203498512 U CN 203498512U CN 201320348451 U CN201320348451 U CN 201320348451U CN 203498512 U CN203498512 U CN 203498512U
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Abstract
The utility model discloses an electrostatic spinning knockout and an electrostatic spinning machine. The electrostatic spinning knockout is provided with an enclosed space, has an inverted conical structure, and comprises a conical shell, a gasket, a sieve screen, a cover body, a liquid inlet pipe and a plurality of liquid outlet holes, wherein the conical shell is provided with a bottom end opening formed in the top point of the conical shell and a bottom end opening opposite to the top end opening; the gasket, the sieve screen and the cover body are covered on the bottom end opening of the conical shell in sequence; the gasket and the sieve screen are sealed inside the conical shell by the cover body; the liquid inlet pipe is arranged at the top point of the conical shell, and is communicated with the internal cone space of the conical shell through the top end opening; the plurality of liquid outlet holes are formed in the cover body. The electrostatic spinning machine comprises a liquid supply device and the electrostatic spinning knockout, wherein the liquid supply device comprises a gas cylinder; a liquid storage tank is connected with the gas cylinder through a ventilation pipe; a metering pump is connected with the liquid storage tank through a liquid delivery pipe; the electrostatic spinning knockout is connected with the metering pump through the liquid delivery pipe; the metering pump is used for controlling the quality of electrostatic spinning liquid entering the knockout.
Description
Technical field
The utility model belongs to field of textile machinery, relates to a kind of electrostatic spinning knockout and electrostatic spinning machine.
Background technology
Electrostatic spinning technique is a kind of method of preparing continuous nano-fibre material that A Formhals proposed in 1934.This technology is to utilize electric field force high polymeric solution to be formed in electrostatic field to jet, and then is drawn into the silk of nano-scale, nanofiber namely, and this nanofiber forms the nano fibrous membrane fibrofelt of similar non-weaving cloth shape on receiving system.This nano fibrous membrane has the character of the aspects such as good optics, electricity, electromagnetism, thereby has potential using value in fields such as electron-optical, biomedicine, micro-nano devices.At present, electrostatic spinning has become preparing nano fiber, and nano fibrous membrane is most important, effective method.But the diameter of electrospun fibers is thinner, thus yield poorly, and provide drawing-off from electric field be easily interfered, hindered industrialized production and application.Tomaszewksi etc. study discovery, and syringe needle quantity and output are linear correlation.In order to improve the output of nanofiber, using Multi needle to carry out Static Spinning is a kind of very effective mode.Yet, when a plurality of syringe needles carry out Static Spinning, be difficult to make described electrospinning liquid evenly to enter each syringe needle, thereby make the wire vent of electrospinning syringe needle inhomogeneous.
Based on above factor, the quantity that only increases merely shower nozzle can not obtain high-quality electro spinning nanometer fiber membrane, has therefore seriously restricted the commercial application of electrostatic spinning technique, and the application of spininess Static Spinning does not make substantial progress.
Utility model content
In view of this, necessary a kind of electrostatic spinning knockout and the electrostatic spinning machine of providing, can make electrospinning liquid evenly enter each electrospinning syringe needle of the electrostatic spinning machine of Multi needle.
An electrostatic spinning knockout, this knockout has an enclosure space, and this knockout is inverted cone-shaped structure, comprising: a tapered housing has the summit that a top end opening is arranged on described tapered housing, and a bottom end opening is relative with this top end opening; One packing ring, a screen cloth, and a lid covers the bottom end opening of described tapered housing successively, described lid is sealed in tapered enclosure interior by described packing ring and screen cloth; One feed tube is arranged on the summit of described tapered housing, and is communicated with the cone space of described tapered enclosure interior by described top end opening; And a plurality of fluid holes are arranged on described lid.
A kind of electrostatic spinning machine, it comprises: a liquid feed device, comprise a gas cylinder, one fluid reservoir is connected with described gas cylinder by breather pipe, one measuring pump is crossed woven hose and is connected with described fluid reservoir, and just like the electrostatic spinning knockout described in claim 1 to 8, by woven hose, be connected with described measuring pump, described measuring pump is for controlling the quality that enters knockout electrospinning liquid; One electrospinning liquid filament forming device, comprises at least one ejection head unit, and this at least one ejection head unit comprises a plurality of electrospinning syringe needles, and each in the plurality of electrospinning syringe needle is corresponding connected with a fluid hole on described lid by a Liquid pouring pipe; One fiber receiving system and described electrospinning liquid filament forming device are oppositely arranged, for being received in high voltage electric field, and the nanofiber that the electrospinning liquid being ejected by electrospinning liquid filament forming device forms, thus obtain the nano fibrous membrane being formed by this nanofiber; And a high-voltage DC power supply, for high voltage direct current being provided to described electrospinning liquid filament forming device.
Compared with the prior art, the electrostatic spinning knockout that the utility model provides, for inverted cone-shaped structure, the cone angle of its tapered housing is obtuse angle, when electrospinning liquid enters this knockout, can realize and in knockout, store less electrospinning liquid, fast, equably the electrospinning liquid that enters knockout be carried out to separatory.Thereby improved efficiency, reduced the waste of electrospinning liquid, also made the flow of the electrospinning liquid that each fluid hole flows out identical, thereby improved the uniformity of the electrospinning liquid that enters Multi needle electrospinning shower nozzle.
Accompanying drawing explanation
The structural representation of the electrostatic spinning machine that Fig. 1 provides for the utility model embodiment.
The cutaway view of the knockout of the electrostatic spinning machine that Fig. 2 provides for the utility model embodiment.
The cutaway view of the tapered housing of the knockout of the electrostatic spinning machine that Fig. 3 provides for the utility model embodiment.
The top view of the lid of the knockout of the electrostatic spinning machine that Fig. 4 provides for the utility model embodiment.
The top view of the electrospinning liquid filament forming device of the electrostatic spinning machine that Fig. 5 provides for the utility model embodiment.
The chassis top view of the ejection head unit of the electrostatic spinning machine that Fig. 6 provides for the utility model embodiment.
The chassis top view of the another kind of ejection head unit of the electrostatic spinning machine that Fig. 7 provides for the utility model embodiment.
On the chassis of the ejection head unit of the electrostatic spinning machine that Fig. 8 provides for the utility model embodiment, situation is asked in the distribution of a certain row's electrospinning syringe needle.
On the chassis of the ejection head unit of the electrostatic spinning machine that Fig. 9 provides for the utility model embodiment, each arranges the length relation schematic diagram of the center electrospinning syringe needle of electrospinning syringe needle.
Main element symbol description
Gas cylinder 1
Fluid reservoir 2
Measuring pump 3
Knockout 4
Connecting rod 7
Accept cloth 8
Cylinder 9
Liquid feed device 10
High-voltage DC power supply 11
Electrospinning liquid filament forming device 20
Fiber receiving system 30
Tapered housing 40
Drain pipe 46
Electrostatic spinning machine 100
Bottom end opening 402
Electrospinning syringe needle jack 512
Feed liquor portion 521
The following specific embodiment further illustrates the utility model in connection with above-mentioned accompanying drawing.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further elaborated, with reference to accompanying drawing.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within equally please appended claims limited range in this.
Refer to Fig. 1, the utility model embodiment provides a kind of electrostatic spinning machine 100, and it comprises a liquid feed device 10, an electrospinning liquid filament forming device 20, a fiber receiving system 30 and 11 4 parts of a high-voltage DC power supply.Described liquid feed device 10 is for providing electrospinning liquid to electrospinning liquid filament forming device 20.Described high-voltage DC power supply 11 is electrically connected to described electrospinning liquid filament forming device 20, for form high voltage electric field between electrospinning liquid filament forming device 20 and described fiber receiving system 30, provides the high pressure that forms electrospinning electric field needs in electrospinning process.Described fiber receiving system 30 is for being received in high voltage electric field, the nanofiber that the electrospinning liquid being ejected by electrospinning liquid filament forming device 20 forms, thus obtain the nano fibrous membrane being formed by this nanofiber.
Liquid feed device 10 can adopt hydraulic pressure liquid-supplying system or mechanical liquid-supplying system, as long as uniform electrospinning liquid can be provided.In the present embodiment, described liquid feed device 10 comprises a gas cylinder 1, a fluid reservoir 2, a measuring pump 3 and a knockout 4.Described gas cylinder 1 is connected with described fluid reservoir 2 by breather pipe, in gas cylinder 1, pressure-air is housed.This gas cylinder 1 provides uniform air-flow that the electrospinning liquid in fluid reservoir 2 is pressed in measuring pump 3 by a woven hose.This measuring pump 3 is connected with described knockout 4 by another woven hose, and the ground that this measuring pump 3 can be quantitative is input to the electrospinning liquid of different quality part in described knockout 4, for can accurately controlling the quality that enters described electrospinning liquid filament forming device 20 electrospinning liquid.Described knockout 4, for by the share split of electrospinning liquid, is delivered to described electrospinning liquid filament forming device 20.
Refer to Fig. 2, described knockout 4 is an inverted cone-shaped structure, has the centrum space of a hollow, for holding described electrospinning liquid.Concrete, this knockout 4 comprises a tapered housing 40, a feed tube 41, a packing ring 42, a screen cloth 43, a lid 44 and is arranged on a plurality of drain pipes 46 on described lid 44.
Tapered housing 40 can be circular cone, also can be the polygonal pyramid with a plurality of.Refer to Fig. 3, described tapered housing 40 has the summit that a top end opening 401 is arranged on described tapered housing 40, and a bottom end opening 402 is relative with this top top end opening.Described feed tube 41 is arranged on the top end opening 401 of described tapered housing 40, and the diameter of this feed tube 41 is identical with the diameter of described top end opening 401.Described packing ring 42, screen cloth 43 and described lid 44 cover the bottom end opening 402 of described tapered housing 40 successively.Described packing ring 42, for strengthening the sealing of lid 44, is avoided leakage.Described screen cloth 43 is for by the impurity filtering of electrospinning liquid, makes the electrospinning liquid purity that flows out from the fluid hole 45 of knockout 4 higher.
Described tapered housing 40 is made for hard material, can bear certain pressure.The material of this tapered housing 40 can be metal or quartz glass.The height of this tapered housing 40 is 0.1 centimetre to 0.5 centimetre, and the diameter of the bottom end opening 402 of this tapered housing 40 is 5 centimetres to 15 centimetres.The thickness of this tapered housing 40 is not limit.The drift angle of this tapered housing 40 is more than or equal to 160 degree and is less than 180 degree, and preferably, the cone angle of this tapered housing 40 is for being more than or equal to 160 degree and being less than or equal to 175 degree.Due to the cone angle of this tapered housing 40 at 160 degree between 180 degree, when electrospinning liquid enters this knockout 4, can realize and in knockout 4, store less electrospinning liquid, fast, equably the electrospinning liquid that enters knockout 4 is carried out to separatory.Thereby, improved efficiency, reduced the waste of electrospinning liquid, also make the flow of the electrospinning liquid that each fluid hole 45 flows out identical, thereby improved the uniformity of the electrospinning liquid that enters Multi needle electrospinning shower nozzle.
Described feed tube 41 is arranged on the summit of described tapered housing 40, and is communicated with the cone space of described tapered housing 40 inside by described top end opening 401, and this feed tube 41 interconnects by woven hose and measuring pump 3.Quantitative electrospinning liquid under pressure, by measuring pump 3 evenly by woven hose to being delivered in the confined space of described tapered housing 40 by feed tube 41.The diameter of this feed tube 41 is 0.1 to 0.5 centimetre.The material of this feed tube 41 is identical with described tapered housing 40, can with the one-body molded formation of described tapered housing 40, or also can be bonded in by adhesive the summit of described tapered housing 40.This feed tube 41 also can be optional structure, that is, can directly adopt woven hose to be communicated with described measuring pump 3 and described knockout 4.
Described packing ring 42 is annular and forms by having certain thickness flexible material.In the present embodiment, the material of this packing ring 42 is rubber.The diameter range of this packing ring 42 is consistent with the diameter of the bottom end opening 402 of described tapered housing 40.This packing ring 42 is for strengthening described lid 44 for the closure of the bottom end opening 402 of described tapered housing 40, avoids producing in use procedure leakage.
Described screen cloth 43 is arranged between described packing ring 42 and described lid 44, and this screen cloth 43 has a plurality of mesh.The diameter of mesh, between 20 microns to 200 microns, for filtering out the impurity of electrospinning liquid, thereby prevents that this electrospinning liquid from stopping up shower nozzle in use, thus the uniformity of the diameter of the nanofiber that impact obtains.The material of this screen cloth 43 can be metal or nonmetal, and its order number does not limit, and can adjust according to different electrospinning liquid.The diameter of this screen cloth 43 is consistent with the diameter of the bottom end opening 402 of described tapered housing 40.In the present embodiment, this screen cloth 43 is metal copper mesh, and order number is 200.
Refer to Fig. 4, described lid 44 is for sealing the bottom end opening 402 of described tapered housing 40, and these lid 44 peripheries are provided with thread groove.The bottom end opening 402 of this tapered housing 40 is provided with the external screw thread of answering in contrast.Thereby, lid 44 can closed rotary described in the bottom end opening 402 of tapered housing 40.On this lid 44, be provided with a plurality of fluid holes 45 and run through described lid 44, this fluid hole 45 can insert drain pipe 46, and under the effect of pressure, the electrospinning liquid holding in tapered housing 40 can flow out from this drain pipe 46, flows to described electrospinning liquid filament forming device 20.The diameter of this fluid hole 45 is 0.2 millimeter to 2 millimeters.The number that is appreciated that this fluid hole 45 can be adjusted as required, and different lids 44 also can have different fluid holes 45 numbers.Whether each fluid hole 45 is inserted with a drain pipe 46, and this drain pipe 46 has controlled valve, can control electrospinning liquid and flow out.During use, each drain pipe 46 can be connected with a Liquid pouring pipe, thereby electrospinning liquid is flowed to an electrospinning syringe needle of described electrospinning liquid filament forming device 20.Can use the lid 44 of the fluid hole 45 with different numbers instead according to the needs of electrospinning, as long as guarantee that the number of fluid hole 45 is more than or equal to the number of electrospinning syringe needle in electrospinning liquid filament forming device 20.Be appreciated that described lid 44 and the sealing mode of described tapered housing 40 are not limited to this, can also be followed closely lid 44 and described tapered housing 40 are sealed by sealing.In the present embodiment, the plurality of fluid hole 45 is evenly distributed on lid 44, and forms the regular hexagon of a plurality of coaxial settings, and the distance between the adjacent fluid hole 45 on the plurality of orthohexagonal limit equates.The arrangement mode that is appreciated that the plurality of fluid hole 45 can have multiple, as long as be evenly distributed on described lid 44.
Because described knockout 4 is inverted cone-shaped structure, during use, the feed tube 41 on summit that electrospinning liquid is arranged on the tapered housing 40 of knockout 4 by this enters, and the lid 44 of knockout 4 has some fluid holes 45, and each fluid hole 45 is provided with a drain pipe 46.It is consistent that the structure of the inverted cone-shaped of this knockout 4 has realized the flow of electrospinning liquid of each drain pipe 46 of accurate control, thereby make the diameter of the nanofiber that different electrospinning syringe needles obtain consistent, and the nano fibrous membrane of acquisition is more even.During use, the feed tube 41 of this knockout 4 is contrary with gravity direction to the direction of fluid hole 45, thereby can guarantee that electrospinning liquid is full of described knockout 4 from the bottom to top, then evenly flows out from drain pipe 46 under pressure.This electrospinning knockout 4 can coordinate the electro-spinning equipment of a plurality of electrospinning syringe needles to use, and the length of the electrospinning syringe needle in this electro-spinning equipment can be identical, also can be different.
Refer to Fig. 5, described electrospinning liquid filament forming device 20 comprises a center disk 6, a plurality of ejection head unit 5 and a plurality of connecting rod 7.Described a plurality of ejection head unit 5 is fixing with described center disk 6 by described a plurality of connecting rods 7, and is symmetrical arranged around this center disk 6.One end of the plurality of connecting rod 7 is fixed on the circumference of described center disk 6, can be bonded together by binding agent, or when this connecting rod 7 is metal with described center disk 6, can weld together, further this connecting rod 7 can also with the one-body molded acquisition of described center disk 6.
The plurality of connecting rod 7 can be with described center disk in a plane, or becomes necessarily-45 degree to the angles of+45 degree with described center disk place plane.In described a plurality of connecting rod 7, between every two two adjacent connecting rods 7, angle equates.When the plurality of connecting rod 7 and described center disk 6 are in a plane, the extended line of the plurality of connecting rod 7 is crossed the center of circle of described center disk 6, and a plurality of areas of being divided into of this center disk 6 are equated fan-shaped.The center of circle of described a plurality of ejection head unit 5 divides the distance that is clipped to described center disk 6 can equate also can not wait.Because the extended line of the plurality of connecting rod 7 is crossed the center of circle of described center disk 6, and a plurality of areas of being divided into of this center disk 6 are equated fan-shaped, the plurality of ejection head unit 5 is evenly distributed in center disk 6 around, balance the distribution of electric field, increase again the projected area of electrospinning liquid filament forming device 20, thereby can realize large-scale manufacture fiber membrane.
Preferably, the connecting rod 7 of described electrospinning liquid filament forming device 20 comprises a plurality of head rods and a plurality of the second connecting rod, head rod is different with the length of a plurality of the second connecting rods, the plurality of head rod and a plurality of the second connecting rod are arranged alternately, and what jointly a plurality of areas of being divided into of center disk 6 are equated is fan-shaped.Therefore, the center of circle of described a plurality of ejection head units 5 divides the distance in the center of circle that is clipped to described center disk 6 can be divided into two kinds, and one is the first spacing L
a, another is the second spacing L
b, and described the first spacing L
abe more than or equal to described the second spacing L
b.Around described center disk 6, described a plurality of ejection head units 5 to the distance arrangement regulation of described center disk 6 are, L
a, L
b, L
a, L
b, L
a, L
b..., i.e. the first spacing L
awith the second spacing L
balternative arrangement.By the center of circle of described a plurality of ejection head units 5, divide the distance that is clipped to described center disk 6, length alternative arrangement, can better adjust the distribution of electric field, and further increase the projected area of electrospinning liquid filament forming device 20, thereby can realize large-scale manufacture fiber membrane.
The first spacing L
alength be 5-180 centimetre, described the first spacing L
awith described the second spacing L
bdifference be 5-100 centimetre, preferably, 5-10 centimetre in the present embodiment.The first spacing L described in the present embodiment
abe 10 centimetres, the second spacing L
bit is 5 centimetres.In the present embodiment, described electrospinning liquid filament forming device 20 comprises 6,6 ejection head units 5 of a center disk, and 6 connecting rods 7.Angle between adjacent connecting rod 7 is 60 degree.Described center disk 6, for diameter is at the certain thickness disk of 1 centimetre to 5 centimetres have, for fixing described a plurality of ejection head units 5, and is controlled the movement of described a plurality of ejection head unit 5 by the movement of described center disk 6.This center disk 6 is that conductive metallic material forms, thereby can be electrically connected to described high-voltage DC power supply 11, so that electric field required in electrospinning process to be provided.In the present embodiment, center disk 6 materials are 316L stainless steel, and thickness is 1.2cm, and diameter is 13cm.
Described a plurality of connecting rod 7, can be so that described a plurality of ejection head unit 5 be identical with the current potential of described center disk 6 for conductive material forms.The length of the plurality of connecting rod 7 can corresponding above-mentioned the first spacing L
awith the second spacing L
bbe divided into two classes, the length of a class is corresponding to above-mentioned the first spacing L
a, another kind of length is corresponding to above-mentioned the second spacing L
b.The diameter of this connecting rod 7 is 1 millimeter to 2 millimeters, and length is 5-180cm.In the present embodiment, this connecting rod 7 is the copper Metallic rod of 1 millimeter of diameter, and stock length is 19cm, and quarter butt length is 13cm.
In electrospinning liquid filament forming device 20 of the present utility model, described a plurality of ejection head unit 5 arranges around described center disk 6, the short alternative arrangement of distance that the plurality of ejection head unit is clipped to this center disk 6 for 5 minutes, make the electric field between the plurality of ejection head unit 5 and fiber receiving system 30 very even, be conducive to ejection head unit 5 and eject the consistent nanofiber of diameter, thereby can obtain high-quality nano fibrous membrane.In the utility model embodiment, by center disk 6 and a plurality of connecting rod 7, support is provided to described a plurality of ejection head units 5, and high-voltage DC power supply 11 is electrically connected to a plurality of ejection head units 5.Be appreciated that to described a plurality of ejection head units 5 and provide support, and around the embodiment that Yi Ge center (center of center disk 6) has an above-mentioned distribution, can have a variety ofly, do not limit to described in the utility model above-described embodiment.As long as the plurality of ejection head unit 5 can realize distribution mode described in the utility model, and be connected with high voltage direct current and just can realize the goal of the invention of this case.
Refer to Fig. 6 to Fig. 8, each ejection head unit 5 in a plurality of ejection head units 5 in described electrospinning liquid filament forming device 20 comprises a chassis 51, and a plurality of electrospinning syringe needles 52 that are arranged on chassis 51.Particularly, this chassis 51 is provided with a plurality of electrospinning syringe needle jacks 512, and the plurality of electrospinning syringe needle jack 512 is through hole.In each electrospinning syringe needle jack 512, correspondence is provided with an electrospinning syringe needle 52.Each electrospinning syringe needle 52 has a feed liquor portion 521 and fluid portion 522, and two the relative surfaces with described chassis 51 are given prominence to respectively by this feed liquor portion 521 and fluid portion 522.Described feed liquor portion 521 is connected with a drain pipe 46 in described knockout 4 by Liquid pouring pipe, thereby electrospinning liquid can be inputted to electrospinning syringe needle 52 by Liquid pouring pipe from knockout 4.The length of described a plurality of electrospinning syringe needles 52 can be identical, also can be not identical.In the present embodiment, feed liquor portion 521 length of all electrospinning syringe needles 52 are identical, and the position that the length of the fluid portion 522 of electrospinning syringe needle 52 distributes on described chassis 51 according to electrospinning syringe needle jack 512 is different and different.Thereby realized the distribution of the length of the fluid portion 522 of different electrospinning syringe needles 52 on chassis 51.By adjusting the arrangement of different electrospinning syringe needles 52 and the distribution of length on chassis 51, solved due to problems such as the Static Spinning jet that between spininess Static Spinning syringe needle, electric field phase mutual interference generation electric field distortion causes is unstable, dropping liquids, significantly improved spinning fibre quality.
The material on this chassis 51 is for having certain thickness metallic conduction material, as, copper, iron, gold, silver etc., its diameter is 2 to 15 centimetres, thickness is 0.5 centimetre to 3 centimetres.In the present embodiment, the thickness on described chassis 51 is 1.2cm, and diameter is 11cm.A plurality of electrospinning syringe needle jacks 512 on this chassis 51, are divided into and have many row's distributions to be arranged on chassis 51, and each is arranged place straight line parallel and uniformly-spaced arranges, and row's number is 2m+1, and wherein m is positive integer.The line segment that above-mentioned 2m+1 row electrospinning syringe needle 512 is respectively arranged electrospinning syringe needle 512 places has identical perpendicular bisector.Distance between adjacent row's electrospinning syringe needle jack 512 place straight lines is
d.The regularity of distribution of this electrospinning syringe needle jack 512 on chassis 51 is as follows: the quantity of middle row's electrospinning syringe needle jack 512 is that n, n is even number.This n electrospinning syringe needle jack 512 is symmetrical with respect to a symmetrical centre 515, is evenly distributed in the both sides of described symmetrical centre 515.Wherein, the distance between the electrospinning syringe needle jack 512 that each side is adjacent is d.Distance between the electrospinning syringe needle jack 512 that described symmetrical centre 515 is adjacent is d, or d/2.Crossing the perpendicular bisector of middle row's electrospinning syringe needle 512 place line segments of described symmetrical centre 515, is also the perpendicular bisector of other 2m row electrospinning syringe needle 512 place line segments.
In the direction perpendicular to row's electrospinning syringe needle jack 512 place straight lines in the middle of described, with respect to this diameter symmetry, be distributed with 2m row electrospinning syringe needle jack 512,, in the middle of described, row electrospinning syringe needle jack 512 straight line both sides, place are distributed with respectively m row electrospinning syringe needle jack 512, and the m of these both sides row electrospinning syringe needle jack 512 is symmetrical arranged with respect to centre row's electrospinning syringe needle jack 512 place straight lines.In described m row electrospinning syringe needle jack 512, the distance in every row between adjacent electrospinning syringe needle jack 512 is d.Along the direction away from this centre row's electrospinning syringe needle jack 512, definition the 1st, 2,3 ... m row electrospinning syringe needle jack 512.When the distance between the electrospinning syringe needle jack 512 that described symmetrical centre 515 is adjacent is d, m is less than or equal to n, and m row electrospinning syringe needle jack 512 is distributed with n-m+1 electrospinning syringe needle jack 512; When the distance between the electrospinning syringe needle jack 512 that described symmetrical centre 515 is adjacent is d/2, m is less than or equal to n-1, and m row electrospinning syringe needle jack 512 is distributed with n-m electrospinning syringe needle jack 512.
In one embodiment, described symmetrical centre 515 overlaps with the center of circle on described chassis 51, and described middle row's electrospinning syringe needle jack 512 is arranged on the diameter D on chassis 51.Refer to Fig. 6, in one embodiment, excessively on the diameter D of symmetrical centre 515, be distributed with 4 electrospinning syringe needle jacks 512.With respect to the distance between the adjacent electrospinning syringe needle jack 512 of a side of symmetrical centre 515 symmetries, be d, symmetrical centre 515 is d to the distance of adjacent electrospinning syringe needle jack 512.With respect to diameter D, be symmetrically distributed with 4 row's electrospinning syringe needle jacks 512.On the semicircle that diameter D is cut apart, have 2 row's electrospinning syringe needle jack 512, the 1 row's electrospinning syringe needle jacks 512 to have 4, and the distance between electrospinning syringe needle jack 512 is d.The 2nd row's electrospinning syringe needle jack 512 has 3.
Refer to Fig. 7, in another embodiment, cross on the diameter D of symmetrical centre 515 and be distributed with 6 electrospinning syringe needle jacks 512, with respect to the distance between the adjacent electrospinning syringe needle jack 512 of a side of symmetrical centre 515 symmetries, be d, center is d/2 to the distance of adjacent electrospinning syringe needle jack 512.With respect to diameter D, be symmetrically distributed with 6 row's electrospinning syringe needle jacks 512, the distance between each electrospinning syringe needle jack 512 adjacent in arranging is d.On the semicircle that diameter D is cut apart, there are 3 row's electrospinning syringe needle jacks 512.The 1st row's electrospinning syringe needle jack 512 has 5, and the 2nd row's electrospinning syringe needle jack 512 has 4, the 3 row's electrospinning syringe needle jacks to have 3.
On described chassis 51, described a plurality of electrospinning syringe needles 52 the distribution of length there is special rule, specific as follows:
For each row's electrospinning syringe needle 52, when electrospinning syringe needle 52 numbers are odd number, a middle length is the longest, here syringe needle centered by this longest root electrospinning syringe needle 52 in the middle of defining, electrospinning syringe needle 52 length away from center syringe needle reduce gradually, and symmetrical about middle syringe needle, the length difference in same row between adjacent electrospinning syringe needle 52 is Δ L;
For each row's electrospinning syringe needle 52, when electrospinning syringe needle 52 numbers are even number, the length of middle two electrospinning syringe needles 52 is consistent, and be electrospinning syringe needle 52 the longest in this row, electrospinning syringe needle 52 length of decentre syringe needle reduce gradually, and symmetrical about middle syringe needle, the length difference in same row between adjacent electrospinning syringe needle 52 is Δ L;
Along perpendicular to above-mentioned selected radius D, and in the direction at 51 centers 515, described chassis, the length of Ge Pai center electrospinning syringe needle 52 shortens gradually, and the length difference of the center electrospinning syringe needle 52 between two adjacent rows is Δ L.
Because the feed liquor portion 521 of all electrospinning syringe needles 52 is equal, so the length difference between above-mentioned electrospinning syringe needle 52 is Δ L, be exactly the difference of the fluid portion 522 of described electrospinning syringe needle 52.The scope of above-mentioned length difference Δ L is between 0.1 to 2 centimetre.There is 1-50 root electrospinning syringe needle 52 on each chassis 51, and syringe needle is metal tube, as gold, silver, copper, iron etc.Syringe needle tube internal diameter is 0.1-2 centimetre, and syringe needle tube external diameter is 2-5 centimetre, and length is 1-30cm, and syringe needle spacing is 0.1-10cm.In one embodiment, electrospinning syringe needle 52 is 316L stainless steel tube, and pipe external diameter is 3cm, and internal diameter is 2cm, and the syringe needle of shortest length is 3cm.
When described ejection head unit 5 is connected with described center disk 6 by connecting rod 7, the extended line that this connecting rod 7 is crossed is crossed described symmetrical centre 515, and divides the straight line at described middle row electrospinning syringe needle 52 places equally.In all row's electrospinning syringe needles 52, those row's electrospinning syringe needle 52 distance center disks 6 with Chang center syringe needle are nearest, arrange like this, further balance Electric Field Distribution.In described ejection head unit 5, the internal diameter of described a plurality of electrospinning syringe needles 52, length, spacing, arrangement mode rationally arrange by technique scheme, solved due to problems such as the Static Spinning jet that between spininess Static Spinning syringe needle, electric field phase mutual interference generation electric field distortion causes is unstable, dropping liquids, significantly improved spinning fibre quality.
Fig. 8 is in an embodiment of the present utility model, the distribution situation of a certain row's electrospinning syringe needle 52 on chassis 51.This row has 5 electrospinning syringe needles 52 and uniformly-spaced arranges, and wherein, electrospinning syringe needle 52 length at center are the longest, and adjacent electrospinning syringe needle 52 length reduce successively.Fig. 9 is in an embodiment of the present utility model, the length relation schematic diagram of adjacent Ge Pai center electrospinning syringe needle 52.As seen from Figure 9, adjacent Ge Pai center electrospinning syringe needle 52 reduces successively, and difference in height is for equating.When application, in Fig. 9, there are those row's electrospinning syringe needle 52 the most close center disk 6 of Chang center electrospinning syringe needle 52.
Described fiber receiving system 30 and described electrospinning liquid filament forming device 20 relative spacing settings, have high electric field between this fiber receiving system 30 and described electrospinning liquid filament forming device 20.This fiber receiving system 30 comprises two cylinders 9, accepts cloth 8 and extractor fan 60.This is accepted cloth 8 and can form for the flexible material of wire or conduction.Two cylinders 9 are placed in the two ends of accepting cloth 8, and the turning cylinder of two cylinders 9 be arranged in parallel.The rotation of two cylinders 9 drives and accepts cloth 8 side-to-side movement in the horizontal direction, and Electrospun can drop on uniformly and accept on cloth 8.During actual use, the described cloth 8 of accepting arranges and described electrospinning liquid filament forming device 20 belows, is oppositely arranged with ejection head unit 5.Described accept cloth 8 side-to-side movement in the horizontal direction in, this electrospinning liquid filament forming device 20 can be in rotation centered by center disk in horizontal plane, it can turn left after a figure, then the right side turns around, or rotates within the scope of 120 degree to 360 degree.Electrospinning liquid filament forming device 20 can also reciprocating motion on perpendicular to the described direction of accepting cloth 8 motion.
The diameter of its intermediate roll 9 is 10-200mm, accepts the width of cloth 8 at 10-200cm.Extractor fan 60 is placed in to be accepted under cloth 8, has reduced the scope of spray silk, Electrospun is dropped on more uniformly and accept, on cloth 8, to be conducive to form the fiber membrane of homogeneous thickness.
Application example 1
When take PAA as electrospinning solution, while using electrostatic spinning machine 100 of the present utility model to carry out spinning.Electrospinning solution injects the fluid reservoir 2 of liquid feed device 10, and measuring pump 3 rotating speeds are controlled at 10r/min, and liquid feed device 10 is transported to electrospinning solution on each electrospinning syringe needle 52.The voltage of high-voltage DC power supply 11 is transferred to 65kv, accepts cloth 8 with the speed translation of 0.5m/min, and match with the reciprocating motion of ejection head unit 5, ejection head unit 5 is 70cm with the distance of accepting cloth 8.
Application example 2
The PVDF of take carries out electrospinning as electrospinning liquid, and adjusting measuring pump 3 rotating speeds is 15r/min, and high-voltage DC power supply 11 voltages are transferred to 50kv, accepts cloth 8 with the speed motion of 0.5m/min, and ejection head unit 5 is adjusted into 85cm with the distance of accepting cloth 8.
Application example 3
The PEO of take carries out electrospinning as electrospinning liquid, and adjusting measuring pump 3 rotating speeds is 22r/min, and high-voltage DC power supply 11 voltages are added to 75kv, accepts cloth 8 with the speed motion of 1.0m/min, and ejection head unit 5 is adjusted into 110cm with the distance of accepting cloth 8.Be appreciated that in order further to improve the uniformity of the tunica fibrosa that electrospinning obtains, described ejection head unit 5 can reciprocating motion on perpendicular to the described direction of accepting cloth 8 motions.
In addition, those skilled in the art also can do other and change in the utility model spirit, and these variations of doing according to the utility model spirit certainly, all should be included in the utility model scope required for protection.
Claims (10)
1. an electrostatic spinning knockout, this knockout has an enclosure space, it is characterized in that, and this knockout is inverted cone-shaped structure, comprising:
One tapered housing has the summit that a top end opening is arranged on described tapered housing, and a bottom end opening is relative with this top end opening;
One packing ring, a screen cloth, and a lid covers the bottom end opening of described tapered housing successively, described lid is sealed in tapered enclosure interior by described packing ring and screen cloth;
One feed tube is arranged on the summit of described tapered housing, and is communicated with the cone space of described tapered enclosure interior by described top end opening; And
A plurality of fluid holes are arranged on described lid.
2. electrostatic spinning knockout as claimed in claim 1, is characterized in that, the cone angle of described tapered housing is obtuse angle, and described cone angle is 160 degree to 180 degree.
3. electrostatic spinning knockout as claimed in claim 1, is characterized in that, the cone angle of described tapered housing is 160 degree to 175 degree.
4. electrostatic spinning knockout as claimed in claim 1, is characterized in that, described tapered housing is that metal material is made.
5. electrostatic spinning knockout as claimed in claim 1, is characterized in that, described screen cloth is arranged between described packing ring and described lid, and this screen cloth has a plurality of mesh, and the diameter of mesh is between 20 microns to 200 microns.
6. electrostatic spinning knockout as claimed in claim 4, is characterized in that, described screen cloth is that metal material is made.
7. electrostatic spinning knockout as claimed in claim 1, is characterized in that, each fluid hole on described lid is inserted with a drain pipe, and this drain pipe has controlled valve.
8. electrostatic spinning knockout as claimed in claim 1, is characterized in that, described tapered housing is cone or pyramid.
9. an electrostatic spinning machine, it comprises:
One liquid feed device, comprise a gas cylinder, one fluid reservoir is connected with described gas cylinder by breather pipe, one measuring pump is crossed woven hose and is connected with described fluid reservoir, and just like the arbitrary described electrostatic spinning knockout of claim 1 to 8, by woven hose, be connected with described measuring pump, described measuring pump is for controlling the quality that enters knockout electrospinning liquid;
One electrospinning liquid filament forming device, comprises at least one ejection head unit, and this at least one ejection head unit comprises a plurality of electrospinning syringe needles, and each in the plurality of electrospinning syringe needle is corresponding connected with a fluid hole on described lid by a Liquid pouring pipe;
One fiber receiving system and described electrospinning liquid filament forming device are oppositely arranged, for being received in high voltage electric field, and the nanofiber that the electrospinning liquid being ejected by electrospinning liquid filament forming device forms, thus obtain the nano fibrous membrane being formed by this nanofiber; And
One high-voltage DC power supply, for providing high voltage direct current to described electrospinning liquid filament forming device.
10. electrostatic spinning machine as claimed in claim 9, is characterized in that, this electrospinning liquid filament forming device comprises:
A center disk;
A plurality of connecting rods are connected with described center disk, and stretch out from described center disk, the extended line angulation of two adjacent connecting rods equates, when the length of a plurality of connecting rods is different, the plurality of connecting rod comprises a plurality of head rods and a plurality of the second connecting rod, and the plurality of head rod and the second connecting rod are arranged alternately; And
A plurality of ejection head units, each ejection head unit is connected with described center disk by an above-mentioned connecting rod, when the length of a plurality of connecting rods is different, the center of circle of described a plurality of ejection head units to the distance at the center of described center disk is, the first spacing and the second spacing, each ejection head unit comprises a plurality of electrospinning syringe needles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320348451.5U CN203498512U (en) | 2013-06-18 | 2013-06-18 | Electrostatic spinning knockout and electrostatic spinning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320348451.5U CN203498512U (en) | 2013-06-18 | 2013-06-18 | Electrostatic spinning knockout and electrostatic spinning machine |
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| Publication Number | Publication Date |
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| CN203498512U true CN203498512U (en) | 2014-03-26 |
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| CN201320348451.5U Expired - Lifetime CN203498512U (en) | 2013-06-18 | 2013-06-18 | Electrostatic spinning knockout and electrostatic spinning machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019042A (en) * | 2015-07-28 | 2015-11-04 | 博裕纤维科技（苏州）有限公司 | Uniform solution feeding system for multi-nozzle electrospinning mass production equipment |
| CN105019039A (en) * | 2014-04-30 | 2015-11-04 | 崔建中 | Fuse electrostatic spinning method and nano- fibers prepared by same |
| CN105951190A (en) * | 2016-07-25 | 2016-09-21 | 青岛中科凯尔科技有限公司 | Electrostatic spinning device for constantly supplying liquid through gas pressure |
| CN106637438A (en) * | 2017-01-26 | 2017-05-10 | 上海工程技术大学 | Feed tank and spinneret mechanism |
| CN110205686A (en) * | 2019-06-28 | 2019-09-06 | 大连沃隆峰英鸿纳米科技有限公司 | A kind of Electrospun nano-fibers polymeric spray mechanism |
| CN110886023A (en) * | 2019-10-31 | 2020-03-17 | 东华大学 | Disc type porous spinning assembly for electrostatic spinning |
-
2013
- 2013-06-18 CN CN201320348451.5U patent/CN203498512U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019039A (en) * | 2014-04-30 | 2015-11-04 | 崔建中 | Fuse electrostatic spinning method and nano- fibers prepared by same |
| CN105019042A (en) * | 2015-07-28 | 2015-11-04 | 博裕纤维科技（苏州）有限公司 | Uniform solution feeding system for multi-nozzle electrospinning mass production equipment |
| CN105951190A (en) * | 2016-07-25 | 2016-09-21 | 青岛中科凯尔科技有限公司 | Electrostatic spinning device for constantly supplying liquid through gas pressure |
| CN106637438A (en) * | 2017-01-26 | 2017-05-10 | 上海工程技术大学 | Feed tank and spinneret mechanism |
| CN106637438B (en) * | 2017-01-26 | 2019-02-01 | 上海工程技术大学 | Feed tank and thread spraying structure |
| CN110205686A (en) * | 2019-06-28 | 2019-09-06 | 大连沃隆峰英鸿纳米科技有限公司 | A kind of Electrospun nano-fibers polymeric spray mechanism |
| CN110205686B (en) * | 2019-06-28 | 2021-07-02 | 北京英鸿光大科技有限公司 | Polymer injection mechanism for electrostatic spinning nanofiber |
| CN110886023A (en) * | 2019-10-31 | 2020-03-17 | 东华大学 | Disc type porous spinning assembly for electrostatic spinning |
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