A kind of electrostatic spinning apparatus with secondary air and equipment
Technical field
The present invention relates to a kind of electrostatic spinning apparatus with secondary air and equipment.
Background technology
At present, electrostatic spinning technique is the mainstream technology preparing nanofiber.Just electrospinning is reported in the patent, the device for spinning of what it adopted is single needle as far back as AntonFomhals in 1934.But the device for spinning spinning efficiency of this single needle is extremely low, the production capacity usually preparing nanofiber only has 0.001-0.01g per minute.In order to improve the production efficiency of this spinning mode, succession have developed again the electrostatic spinning apparatus of spininess hair style, normally by tens of even hundreds of single needle combination to carrying out electrostatic spinning together.The spinning efficiency of Multi needle electrostatic spinning apparatus can be raised to 0.1-1.0g per minute usually.But because syringe needle easily blocks, clean and maintenance work is very loaded down with trivial details, increase the preparation cost of spinning.
Along with the develop rapidly of technology, someone proposes needle-less electrostatic spinning technique in succession, such as uses circular drum as spinning electrode, substantially increases spinning efficiency, spinning speed has been brought up to 1.5-1.8 gram per minute; And in order to improve further output he additionally use to bleed in top, side blow and in methods such as the various decorative patterns of circular drum surface design.But, adopt above method, not obvious for the raising impact of output, fundamentally do not increase the speed of the quantity of injection and nanofiber formation.And be exposed in air due to spinning solution, can cause a large amount of solvent evaporates, not only cause the instability of spinning solution concentration, but also can form the organic exhaust gas in a large number to human body and bad environmental, harm workman is healthy.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, a kind of electrostatic spinning apparatus with secondary air provided by the invention and equipment, coordinated electrostatic spinning by air-flow blowing force with electrostatic force, to improve spinning efficiency.
For solving the problems of the technologies described above, the present invention program comprises:
A kind of electrostatic spinning apparatus with secondary air, it comprises reservoir, collecting electrode and high voltage source, high voltage source respectively with reservoir, collecting electrode circuit connects, wherein, collecting electrode is positioned at above reservoir, the spinning roller that can rotate is provided with in reservoir, an electrostatic spinning district is formed between collecting electrode orthographic projection to the region and collecting electrode of spinning roller, spinning roller is evenly provided with multiple through hole, the jet structure that position keeps static is provided with in spinning roller, it is corresponding that jet district and the electrostatic of jet structure put spinning zone, jet structure upwards sprays air-flow, air-flow is blown into electrostatic spinning district by through hole, air-flow blowing force has coordinated electrostatic spinning with electrostatic force.
Described electrostatic spinning apparatus, wherein, above-mentioned jet structure comprises jet roller, jet roll surface has been evenly arranged multiple fumarole on the region in electrostatic spinning district, multiple fumarole is axial arranged along jet roller, arrange that the both sides in fumarole region are provided with sealing strip, the two ends of jet roller and spinning roller are movable sealing.
Described electrostatic spinning apparatus, wherein, the side in above-mentioned electrostatic spinning district is provided with the imbibition nozzle structure of gluing glutinous surplus liquid for siphoning away spinning roller, opposite side is provided with and controls the blade construction that spinning roller glues slime body thickness, and imbibition nozzle structure, blade construction and spinning roller glue glutinous hydraulic seal reservoir.
Described electrostatic spinning apparatus, wherein, above-mentioned blade construction comprises scraping blade, the installing plate be in tilted layout and mounting bracket, mounting bracket is arranged on edge on reservoir, installing plate two ends are provided with threaded regulating shaft, regulating shaft is arranged in the first arc strip hole corresponding on mounting bracket, and regulating shaft can move along corresponding first arc strip hole; Scraping blade is fixed on installing plate towards on the side of spinning roller, on installing plate and reservoir along between be provided with on a flexible sealing strip, scraping blade, installing plate, flexible sealing strip and spinning roller glue glutinous liquid by a side seal of reservoir.
Described electrostatic spinning apparatus, wherein, above-mentioned imbibition nozzle structure comprises imbibition nozzle and fixed support, and imbibition nozzle is arranged on fixed support; Imbibition nozzle comprises upper lip and lower lip, and upper lip upper end has installing hole, and lower lip upper end is provided with screwed hole, and upper lip upper end is connected by the first bolt with lower lip upper end; Form the elongate slot being used for imbibition between upper lip and lower lip, elongate slot and spinning roller periphery fit; Imbibition nozzle two ends are provided with installation shaft, and installation shaft is arranged in the second arc strip hole corresponding to fixed support, and installation shaft can move and rotate, the position of adjustment imbibition nozzle and spinning roller and angle in corresponding second arc strip hole; Imbibition nozzle bottom is provided with the seal blades that can dismantle, and seal blades is fixed on below lower lip by the second bolt and pressing plate, and the free end of seal blades contacts with spinning roller periphery, for sealing the opposite side of reservoir.
Described electrostatic spinning apparatus, wherein, above-mentioned spinning roller outer peripheral face is provided with decorative pattern, and decorative pattern is helical form lines laterally, longitudinally or angularly; Decorative pattern comprises protuberance and depressed part, and protuberance is triangle, trapezoidal, rectangle, circular arc or its combined shaped, and above-mentioned through hole is arranged in depressed part.
Described electrostatic spinning apparatus, wherein, above-mentioned lower lip rear design has at least one pipette, and pipette is connected with asepwirator pump, for being siphoned away by waste liquid.
Described electrostatic spinning apparatus, wherein, is provided with dividing plate and sidewall in above-mentioned lower lip, dividing plate is between adjacent two pipette, and lower lip is divided into several static pressure chambeies by dividing plate.
A kind of electrospinning device, it comprises winding/unwinding device, and wherein, winding/unwinding device is connected with described electrostatic spinning apparatus, and the spinning rolling that electrostatic spinning apparatus produces by winding/unwinding device is got up.
A kind of electrostatic spinning apparatus with secondary air provided by the invention and equipment, adopt the technological means of spinning roller and jet structure, spinning roller carries the spinning solution in reservoir when rotating, when spinning roller arrives the jet region (the part spinning roller also only entering jet region just can be subject to Jet Stream) of jet structure, the air-flow of jet structure ejection is blown into electrostatic spinning district by the through hole on spinning roller, electrostatic spinning is completed with under the cooperation of electrostatic force in air-flow blowing force, than traditional pulley type spinning mode output increased 5 times to 10 times, increase substantially spinning efficiency, and adopt imbibition nozzle structure, blade construction makes the spinning solution in reservoir be in the environment of sealing, avoid the change in concentration because solvent evaporates causes, avoid the appearance that spinning solution volatilization pollutes situation.
Accompanying drawing explanation
Fig. 1 is the structural representation of electrostatic spinning apparatus in the present invention;
Fig. 2 is the section structure schematic diagram that in the present invention, spinning roller coordinates with jet roller;
Fig. 3 is the fractionation structural representation that in the present invention, spinning roller coordinates with jet roller;
Fig. 4 is the cross-sectional view that in the present invention, spinning roller coordinates with jet roller;
Fig. 5 is the structural representation of blade construction in the present invention;
Fig. 6 is the cross-sectional view of blade construction in the present invention;
Fig. 7 is the structural representation of imbibition nozzle structure in the present invention;
Fig. 8 is the structural representation of lower lip in the present invention;
Fig. 9 is the schematic surface of spinning roller in the present invention;
Figure 10 is the structural representation of lower sublabial in the present invention.
Detailed description of the invention
The invention provides a kind of electrostatic spinning apparatus with secondary air and equipment, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of electrostatic spinning apparatus with secondary air, as shown in Fig. 1 and 3, shown, it comprises reservoir 1, collecting electrode 2 and high voltage source 3, high voltage source 3 is connected with reservoir 1, collecting electrode 2 circuit respectively, thus makes the spinning solution in reservoir 1 also charged.Collecting electrode 2 is positioned at above reservoir 1, the spinning roller 4 that can rotate is provided with in reservoir 1, an electrostatic spinning district 5 is formed between collecting electrode 2 orthographic projection to the region and collecting electrode 2 of spinning roller 4, refer to more specifically and form electrostatic spinning district 5 when spinning cylinder 4 rotates between part below collecting electrode 2 and collecting electrode 2, under electrostatic interaction, on spinning roller 4, sticky glutinous spinning solution can move to collecting electrode 2 direction, forms spinning.Spinning roller 4 is evenly provided with multiple through hole 6, the jet structure that position keeps static is provided with in spinning roller 4, it is corresponding that jet district and the electrostatic of jet structure put spinning zone 5, jet structure upwards sprays air-flow, air-flow is blown into electrostatic spinning district 5 by through hole 6, coordinate electrostatic spinning in air-flow blowing force with electrostatic force, spinning speed has been brought up to 2.1-4.3 gram per minute, increased substantially spinning efficiency.
Further, as Fig. 2, shown in Fig. 3 and Fig. 4, above-mentioned jet structure comprises jet roller 7, one end of jet roller 7 is provided with air admission hole 32, jet roller 7 has been evenly arranged multiple fumarole 8 on the region in electrostatic spinning district 5, multiple fumarole 8 is axial arranged along jet roller 7, arrange that the both sides in fumarole region are provided with sealing strip 9, form a relatively airtight jet space 31, thus ensure that fumarole 8 is only jet to electrostatic spinning district 5, avoid unstable scope spinning solution being blown out electrostatic spinning district 5 in jet region, jet roller 7 is movable sealing with the two ends of spinning roller 4, as shown in Figure 4, adopt the technological means of bearing 33 and sealing ring 34 just can realize, this is no longer going to repeat them, the spinning solution adopting the technical approach of movable sealing to avoid between jet roller 7 and spinning roller 4 is excessive, improve the airtight performance of spinning process.Do not belong to discussion emphasis of the present invention as the driving mechanism of spinning roller 4, transmission mechanism, this is no longer going to repeat them.
In another preferred embodiment of the present invention, as shown in Figure 1, the side in above-mentioned electrostatic spinning district 5 is provided with the imbibition nozzle structure 10 of gluing glutinous surplus liquid for siphoning away spinning roller, opposite side is provided with and controls the blade construction 11 that spinning roller 4 glues slime body thickness, the sticky glutinous hydraulic seal reservoir 1 of imbibition nozzle structure 10, blade construction 11 and spinning roller 4, the spinning solution in reservoir 1 is made to be in the environment of sealing, avoid the change in concentration because solvent evaporates causes, avoid the appearance that spinning solution volatilization pollutes situation.
Certain blade construction 11 can adopt related art method of the prior art, but as shown in Fig. 1, Fig. 5 and Fig. 6, installing plate 13 and mounting bracket 29 that blade construction 11 in the present invention comprises scraping blade 12, is in tilted layout, mounting bracket 29 is arranged on edge on reservoir 1, installing plate 13 two ends are provided with threaded regulating shaft 14, regulating shaft 14 is arranged in the first arc strip hole 15 corresponding on mounting bracket 29, and regulating shaft 14 can move along corresponding first arc strip hole 15; Scraping blade 12 is fixed on installing plate 13 towards on the side of spinning roller 4, on installing plate 13 and reservoir 1 along between be provided with on a flexible sealing strip 16, the sticky glutinous liquid of scraping blade 12, installing plate 13, flexible sealing strip 16 and spinning roller 4 is by a side seal of reservoir 1, by the distance of regulating shaft 14 movement in corresponding first arc strip hole 15, the spacing between scraping blade 12 and spinning roller 4 can be adjusted, and then regulate the thickness of sticky glutinous spinning solution on spinning roller 4, under the satisfactory prerequisite of guarantee spinning solution, seal again the space of reservoir 1.
In another preferred embodiment of the present invention, above-mentioned imbibition nozzle structure 10 comprises imbibition nozzle and fixed support 30, and imbibition nozzle is arranged on fixed support 30; As illustrated in figs. 7 and 8, imbibition nozzle comprises upper lip 17 and lower lip 18, and upper lip 17 upper end has installing hole, and lower lip 18 upper end is provided with screwed hole, and upper lip 17 upper end is connected by the first bolt 19 with lower lip 18 upper end; Form the elongate slot 20 being used for imbibition between upper lip 17 and lower lip 18, elongate slot 20 and spinning roller 4 periphery fit, and for being siphoned away by remaining for spinning spinning solution, re-using, namely improve raw material availability, again reduce the pollution to environment.As shown in Fig. 1 and Fig. 9, imbibition nozzle two ends are provided with installation shaft 21, installation shaft 21 is arranged in the second arc strip hole 22 of fixed support 30 correspondence, installation shaft 21 can move at corresponding second arc strip hole 22 and rotate, the position of adjustment imbibition nozzle and spinning roller 4 and angle, elongate slot 20 is better fitted on the periphery of spinning roller 4, improves the organic efficiency to residue spinning solution.Imbibition nozzle bottom is provided with the seal blades 23 that can dismantle, seal blades 23 is fixed on below lower lip 18 by the second bolt 24 with pressing plate 25, the free end of seal blades 23 contacts with spinning roller 4 periphery, for sealing the opposite side of reservoir 1, prevent again imbibition nozzle when siphoning away residual waste liquid, the solvent vapo(u)r that the spinning solution in reservoir 1 volatilizes is siphoned away.Known by foregoing description, by imbibition nozzle structure 10, blade construction 11 and spinning roller 4 sticky glutinous spinning solution, reservoir 1 is sealed.
Further, as shown in Fig. 3, Fig. 9, above-mentioned spinning roller 4 outer peripheral face is provided with decorative pattern, and decorative pattern is helical form lines laterally, longitudinally or angularly; Decorative pattern comprises protuberance 26 and depressed part 27, protuberance is triangle, trapezoidal, rectangle, circular arc or its combined shaped, improve the efficiency that spinning roller 4 carries spinning solution in reservoir 1, and above-mentioned through hole 6 is arranged in depressed part 27, make the processing of spinning cylinder 4 more convenient, reduce its manufacturing cost.
As shown in Figure 8, in order to further improve the performance of imbibition nozzle, above-mentioned lower lip 18 rear design has at least one pipette 28, pipette 28 is connected with asepwirator pump, for being siphoned away by waste liquid, as the concrete layout of pipette 28 with asepwirator pump, this is no longer going to repeat them.As shown in Figure 10, and be provided with dividing plate and sidewall 30 in above-mentioned lower lip 18, dividing plate, between adjacent two pipette 28, can also arrange multiple dividing plate, and lower lip is divided into several static pressure chambeies 31 by dividing plate, further improves imbibition efficiency.
Present invention also offers a kind of electrospinning device, it comprises winding/unwinding device, and wherein, winding/unwinding device is connected with above-mentioned electrostatic spinning apparatus, and the spinning rolling that electrostatic spinning apparatus produces by winding/unwinding device is got up, thus completes spinning technique.Do not belong to invention expound part as winding/unwinding device, this is no longer going to repeat them.
Certainly; more than illustrate and be only preferred embodiment of the present invention; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this description; made all equivalently to substitute, obvious variant, within the essential scope all dropping on this description, protection of the present invention ought to be subject to.