CN209923492U - Annular reciprocating motion closed electrostatic spinning device - Google Patents

Abstract

The utility model discloses a closed electrostatic spinning device of annular reciprocating motion, including fibre collector, fibre generator, solution tank, reciprocating motion rotary mechanism and high voltage generating device, wherein fibre generator installs in the solution tank and is connected the transmission with reciprocating motion rotary mechanism and realize fibre generator limit rotation limit reciprocating motion, and fibre generator and fibre collector are connected with high voltage generating device's positive negative pole respectively, form the high voltage electrostatic field who is used for realizing electrostatic spinning between fibre collector and fibre generator. The utility model discloses a make fibrous generator reciprocating motion, can overcome the relatively poor shortcoming of nanofiber homogeneity of receiving on the discontinuous fibre collector that causes of electric field, through increase the air current on sealed apron, can increase nanofiber's output by a wide margin.

Description

Annular reciprocating motion closed electrostatic spinning device

Technical Field

The utility model belongs to the technical field of electrostatic spinning device, concretely relates to closed electrostatic spinning device of annular reciprocating motion.

Background

In recent years, through comparison of a large number of research experiments on various nanofiber production methods, electrospinning is becoming an important method for stably producing nanofibers. The method has simple production process and wide application range, and various functional nano fibers can be prepared from different spinning solutions only by applying a high-voltage electrostatic field between the spray head and the receiving electrode. The spinning solution is from artificially synthesized polymer to natural polymer, all soluble and meltable polymers can be prepared by an electrostatic spinning method, and the electrostatic spinning solution is stable in production and strong in form controllability.

The yield problem and the stability problem are two major bottlenecks which always restrict the development of the electrostatic spinning technology, and although the yield and the stability of the electrostatic spinning device are greatly improved through the efforts of vast scientific researchers, the requirements of large-scale production cannot be met. The scheme generally applied to the prior electrostatic spinning technology mainly comprises a needle spinning device and a needle-free spinning device.

In order to realize large-scale production, the needle spinning device generally adopts a needle head array form for spinning. But the problems exist that the edge effect of mutual interference of electric fields can be generated between needle heads, the jet flow of a single needle is obviously deviated, the spinning efficiency and the spinning quality are reduced, the problems of complex spinning device, easy blockage of the needle heads, uneven liquid supply amount of each needle head, complex liquid supply system and inconvenient cleaning exist, and after the problem of the spinning device occurs, the problem of long solution time leads to the limitation of large-scale production.

The needle-free spinning solves the inherent defects of needle spinning, and Taylor cones are formed on the surfaces of spinning nozzles as much as possible in unit time, so that the yield of produced nano fibers is improved. Another is a spinning electrode rotating around the axis, such as patent publication No. CN202107802U and patent publication No. CN102216502A, in which helical blades and springs are used as the spinning electrode, respectively, to solve the problems of uneven electric field distribution and reusable solution, but there is a problem that these devices are open systems, and the surface of the polymer spinning solution is exposed to the air, resulting in volatilization of a large amount of solvent. As the spinning process proceeds, the solution concentration will be larger and larger, and the fiber will be thicker and thicker as the solution concentration increases, thereby affecting the stability of nanofiber production. For example, patent No. CN205711076U discloses that the solution in the solution tank is sealed by a cover plate using a ring as an electrode to prevent the solvent in the solution tank from volatilizing and ensure the concentration stability of the spinning solution during spinning. But the disadvantage is that the parallel circular rings are fixed in position, and the electric field between the parallel circular rings and the collector is discontinuous, which easily causes the uniformity of the nanofiber layer received on the collector to be poor.

Disclosure of Invention

The utility model provides a technical problem provide a can carry out the closed electrostatic spinning device of scale stable production nanofiber's annular reciprocating motion, can prepare into the nanofiber membrane with polymer solution under the high-voltage electrostatic field.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme, a closed electrostatic spinning device of annular reciprocating motion, its characterized in that includes the fibre collector, the fibre generator, the solution tank, reciprocating motion rotary mechanism and high voltage generating device, wherein the fibre generator is installed in the solution tank and is connected the transmission with reciprocating motion rotary mechanism and realize fibre generator limit rotation limit reciprocating motion, fibre generator and fibre collector are connected with high voltage generating device's positive negative pole respectively, form the high voltage electrostatic field that is used for realizing electrostatic spinning between fibre collector and fibre generator.

Preferably, the reciprocating rotary mechanism comprises the following five structural forms:

the reciprocating rotary mechanism mainly comprises a linear bearing, a rolling bearing, a driven synchronous belt pulley, a driven shaft, a rolling bearing, a synchronous belt, a servo motor, a driving shaft, a driving synchronous belt pulley, a cylinder and a linear slide rail, wherein the driving synchronous belt pulley is connected with the driven synchronous belt pulley through the synchronous belt, a central hole of the driven synchronous belt pulley is provided with a biplanar step, one end of the driven shaft is provided with two platform surfaces matched with a central hole of the driven synchronous belt pulley for realizing that the driven synchronous belt pulley drives the driven shaft to rotate and realizing that the driven shaft reciprocates in the central hole of the driven synchronous belt pulley, the driven synchronous belt pulley is fixed between the two rolling bearings for axial limiting, the linear bearing is supported by the rolling bearing, the axial reciprocating motion of the driving shaft is supported by the linear bearing, the driving shaft synchronously rotates with the linear bearing, the, driving the driving shaft and the driven shaft to synchronously reciprocate;

or the reciprocating rotary mechanism mainly comprises a linear bearing, a rolling bearing, a driven shaft, a driven circular belt pulley, a cylinder, a rolling bearing, a circular belt, a servo motor, a driving shaft, a driving circular belt pulley and a linear slide rail, wherein an output shaft of the servo motor is connected with the driving circular belt pulley through the driving shaft, the driving circular belt pulley is connected with the driven circular belt pulley through the circular belt, a central hole of the driven circular belt pulley is provided with a biplanar step, grooves are arranged on two planes and arc surfaces to reduce friction force generated when the central shaft reciprocates, one end of the driven shaft is provided with two platform surfaces matched with the central hole of the driven circular belt pulley for realizing that the driven circular belt pulley drives the driven shaft to rotate and simultaneously realizes that the driven shaft reciprocates in the central hole of the driven circular belt pulley, the driven circular belt pulley is fixed between the two rolling bearings, the other end of the driven shaft is connected with one end of the driving shaft through a coupler, the linear bearing is supported by a rolling bearing, the driving shaft axially reciprocates and is supported by the linear bearing, the other side of the driving shaft extends into the solution tank and is fixed on the side wall of the solution tank through the bearing, a stopping step for realizing axial limiting of the driving shaft is arranged at the connecting part of the driving shaft and the solution tank bearing, a fiber generator is arranged on the driving shaft in the solution tank, and the solution tank is slidably matched on the linear slide rail and driven by the driving shaft to realize reciprocating movement;

or the reciprocating rotary mechanism mainly comprises a linear bearing, a rolling bearing, a driving shaft, a rolling bearing, a servo motor, a linear slide rail, a servo motor, a cylinder, a screw rod, a nut, a rolling bearing and a linear slide rail, wherein the driving shaft is supported by the rolling bearing and axially limited, the servo motor is connected with the driving rotating shaft and fixed on the linear slide rail, the driving rotating shaft is connected with the driving shaft, the linear bearing is supported by the rolling bearing, the driving shaft axially reciprocates and is supported by the linear bearing, the driving shaft synchronously rotates with the linear bearing, the linear slide rail is in sliding fit with the III-type solution tank, the nut is connected with the III-type solution tank, the screw rod is matched with the nut and is supported by the rolling bearing and axially limited, the screw rod is a bidirectional reciprocating screw rod, when the servo motor drives the screw rod to unidirectionally rotate, the servo motor drives the screw rod to rotate forward and backward, and the nut drives the III-type solution tank and the driving shaft to synchronously reciprocate;

or the reciprocating rotary mechanism mainly comprises a driven shaft, a driven gear, a rolling bearing, a cylinder, a servo motor, a linear slide rail, a driving shaft and a driving gear, wherein an output shaft of the servo motor is connected with the driving gear through the driving shaft, the driving gear is meshed with the driven gear, the driven gear is fixed on the driven shaft, the driving shaft and the driven shaft are respectively supported and limited through the rolling bearing, the servo motor and a rolling bearing mounting plate are matched on the linear slide rail in a sliding manner, one end of the driven shaft is connected with the cylinder fixed on the support, the rolling bearing mounting plate is driven by the stretching of the cylinder to reciprocate along the linear slide rail, the other end of the driven shaft is connected with one end of the driving shaft through a coupler, the other side of the driving shaft extends into the solution tank and is fixed on;

or the reciprocating rotary mechanism mainly comprises a driven shaft, a fixed nut, a driven gear, a linear bearing, a rolling bearing, a servo motor, a driving shaft, a driving gear and a rolling bearing, wherein an output shaft of the servo motor is connected with the driving gear through the driving shaft, the driving shaft is supported through the rolling bearing, the driving gear is meshed with the driven gear, the width of the driving gear is the width of the driven gear plus the moving distance of the driven gear, the driven gear is fixed on the driven shaft, the driven shaft reciprocates and is supported by the linear bearing and the fixed nut, the linear bearing is supported by the rolling bearing, the driven shaft and the linear bearing synchronously rotate, the matching part of the driven shaft and the fixed nut is a bidirectional reciprocating screw structure, the tail end of the driven shaft is connected with one end of the driving shaft through a coupler, the other side, the driving shaft in the solution tank is provided with a fiber generator, and when the driven gear drives the driven shaft to rotate, the bidirectional reciprocating screw thread on the driven shaft is matched with the internal thread of the fixed nut so as to drive the driving shaft to rotate and move in a reciprocating manner.

Preferably, the fiber generator comprises six structural forms, wherein a type I fiber generator, a type II fiber generator and a type III fiber generator are used in a central shaft driving mode, and an IV fiber generator, a V fiber generator and a VI fiber generator are used in a side shaft driving mode;

the I-type fiber generator, the II-type fiber generator and the III-type fiber generator are respectively provided with at least two spokes, the inner diameter of a concentric ring is matched with the driving shaft, the outer edge of the ring of the I-type fiber generator is provided with a V-shaped opening, the outer edge of the ring of the II-type fiber generator is provided with a U-shaped opening, the diameter of the T-shaped disc of the III-type fiber generator is 40-300mm, the height of the end part is 3-60mm, the thickness of the end part is 1-20mm, and the total thickness is 5-40 mm;

the sections of the IV-type fiber generator, the V-type fiber generator and the VI-type fiber generator are all in a cross shape, the height of the end part is 3-60mm, the thickness of the end part is 1-20mm, the total thickness is 5-40mm, the inner side of the fiber generator is provided with an annular driving wheel track, the outer edge of the end part of the IV-type fiber generator is provided with a V-shaped opening, the inner side track is provided with a gear, the gear is in meshing transmission with a driving gear and a driven gear, the central connecting line of the driving gear and the driven gear passes through the circle center of the IV-type fiber generator, and the driving; the outer edge of the end part of the V-shaped fiber generator is provided with a U-shaped opening, the inner side track is a V-shaped section ring, the V-shaped section ring is matched with a driven V-shaped wheel and a driving V-shaped wheel for transmission, the central connecting line of the driven V-shaped wheel and the driving V-shaped wheel passes through the circle center of the V-shaped fiber generator, and the driving V-shaped wheel is fixed on a driving shaft; the inner side track of the VI-type fiber generator is a U-shaped section ring, the U-shaped section ring is in matched transmission with a driven U-shaped wheel and a driving U-shaped wheel, the central connecting line of the driven U-shaped wheel and the driving U-shaped wheel passes through the circle center of the VI-type fiber generator, and the driving U-shaped wheel is fixed on a driving shaft.

Preferably, the annular reciprocating closed type electrostatic spinning device further comprises a sealing cover plate, the sealing cover plate is installed on the solution tank and used for locally sealing the solution in the solution tank, and an outlet of the fiber generator is arranged on the sealing cover plate, so that the fiber generator can freely rotate.

Preferably, the sealing cover plate comprises a central shaft driving type sealing cover plate and a side shaft driving type sealing cover plate, wherein the central shaft driving type sealing cover plate is matched with an I-type fiber generator, a II-type fiber generator and a III-type fiber generator for use, the side shaft driving type sealing cover plate is matched with an IV-type fiber generator, a V-type fiber generator and a VI-type fiber generator for use, the side shaft driving type sealing cover plate consists of a sealing upper cover plate II and a sealing lower cover plate II, the sealing lower cover plate I and the sealing lower cover plate II are both of groove structures, long groove holes are formed at positions corresponding to the fiber generators, the peripheries of grooves among the fiber generators are communicated and are respectively tightly matched with the sealing upper cover plate I and the sealing upper cover plate II, so that the sealing cover plate forms a hollow structure, gas is uniformly distributed in the sealing cover plate, the sealing lower cover plate I is fixedly connected with the movable solution tank in a sealing manner and synchronously, the joint of the lower sealing cover plate II and the fixed solution tank is provided with a track which can synchronously reciprocate along with the fiber generator relative to the solution tank.

Preferably, the annular reciprocating closed electrostatic spinning device further comprises a gas supply device, the gas supply device is connected with a gas inlet hole in the sealing cover plate, gas outlet holes are formed in the sealing cover plate and distributed on two sides of each fiber generator, and the gas outlet holes are used for accelerating the generation speed of the nano fibers in the spinning process, so that the output of the nano fibers is increased.

Preferably, the solution tank is divided into a movable solution tank and a fixed solution tank, the movable solution tank is divided into an I-type solution tank, an II-type solution tank and a III-type solution tank which are in sliding fit with the linear slide rail, the solution tank and the fiber generator synchronously reciprocate under the drive of the reciprocating rotary mechanism, a liquid inlet and a liquid outlet are arranged on the side edge of the movable solution tank and are connected with the circulating liquid supply device, the I-type solution tank is matched with the rolling bearing, the II-type solution tank is matched with the rolling bearing and is simultaneously matched with the solution cover plate, a long slotted hole is formed in the position of the solution tank cover plate corresponding to the fiber generator to seal the solution at the bottom, the III-type solution tank is matched with the rolling bearing, V-shaped grooves are arranged at the position corresponding to the fiber generator, all the V-shaped grooves are communicated with the peripheral annular grooves, the annular grooves at the periphery are sealed, the fiber generator is matched with the linear bearing, is fixed during working, and reciprocates in the fiber generator.

Preferably, the annular reciprocating closed electrostatic spinning device further comprises a circulating liquid supply device, the circulating liquid supply device is communicated with the solution tank through a pipeline, a fresh solution is injected into the solution tank through a pump or a gas with pressure, and the circulating solution is pumped into the liquid supply device through a pump or vacuum for maintaining the stability of the viscosity of the solution in the solution tank.

Preferably, the annular reciprocating closed-type electrospinning device comprises a plurality of fiber generators arranged in an array along a first direction;

the sealing cover plate covers an opening at the top end of the solution tank, and a plurality of windows for the fiber generator to pass through are formed in the sealing cover plate;

a fiber collector disposed opposite the fiber generator;

a high voltage generating device for forming a high voltage electrostatic field for realizing electrostatic spinning between the fiber collector and the fiber generator;

and the power device acts on the fiber generator and the sealing cover plate, can drive the fiber generator to rotate, and can drive the fiber generator and the sealing cover plate to synchronously move along the first direction.

Preferably, the fiber generator is in the shape of a circular ring or a disc.

Compared with the prior art, the utility model following beneficial effect has:

1. the annular fiber generator is adopted, the sealing cover plate is arranged on the solution tank to seal the solution tank, and the circulating liquid supply device is matched, so that the defects that the solvent is volatile and the spinning quality is influenced in the spinning process of the open solution tank can be overcome, and the defect that waste is generated in the brushing process of the closed solution tank can also be overcome;

2. the fiber generator rotates and moves in a reciprocating manner at the same time through the reciprocating movement rotating mechanism, so that the defect of poor uniformity of the received nano fibers on the fiber collector caused by discontinuous electric field can be overcome;

3. the auxiliary air flow is increased through the air outlet holes on the periphery of the fiber generator on the sealing cover plate, so that the yield of the nano fibers can be greatly increased.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a first form of reciprocating rotary mechanism;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic structural view of a second form of reciprocating rotary mechanism;

FIG. 5 is a schematic structural view of a third form of reciprocating rotary mechanism;

FIG. 6 is a schematic structural view of a fourth form of reciprocating rotary mechanism;

FIG. 7 is a schematic structural view of a fifth form of reciprocating rotary mechanism;

FIG. 8 is a schematic structural view of a type I fiber generator;

FIG. 9 is a schematic structural view of a type II fiber generator;

FIG. 10 is a schematic view of a type III fiber generator;

FIG. 11 is a schematic structural view of a type IV fiber generator;

FIG. 12 is a schematic view of a V-shaped fiber generator;

FIG. 13 is a schematic view of a type VI fiber generator;

FIG. 14 is a cross-sectional view of FIG. 2 or FIG. 6;

FIG. 15 is a cross-sectional view of FIG. 4;

FIG. 16 is a cross-sectional view of FIG. 5;

FIG. 17 is a schematic view of a central shaft driven version of the seal plate structure;

fig. 18 is a schematic view of a side shaft drive type seal plate structure.

Detailed Description

The technical scheme of the utility model is described in detail with the accompanying drawings.

An annular reciprocating closed electrostatic spinning device comprises a fiber collector 100, a fiber generator 200, a sealing cover plate 300, a solution tank 400, a reciprocating rotary mechanism 500, an air supply device 600, a circulating liquid supply device 700 and a high voltage generation device 800.

The fiber generator 200 is installed in the solution tank 400 and connected with the reciprocating movement rotating mechanism 500, so that the fiber generator 200 can rotate and reciprocate; the sealing cover plate 300 is installed on the solution tank 400 to seal the solution in the solution tank 400, and simultaneously, the gas provided by the gas supply device 600 is exhausted from the gas outlet of the sealing cover plate to accelerate the generation of the nanofibers; the positive pole of the high voltage generator 800 is connected with the fiber generator 200, the negative pole of the high voltage generator 800 is connected with the fiber collecting device 100, or the ground wire is connected with the fiber collecting device 100, so that a high voltage electrostatic field is formed between the fiber generator 200 and the fiber collecting device 100; the circulation liquid supply device 700 pumps the old solution out of the solution tank 400 and simultaneously replenishes the new solution in, so that the concentration of the spinning solution is kept consistent in the spinning process.

The fiber collector 100 is composed of a metal mesh belt or an antistatic belt and a metal roller, and has good conductivity.

The fiber generator 200 has six structural forms, I type fiber generator 202, II type fiber generator 208 and III type fiber generator 206 are central shaft driving modes; the type IV fiber generator 204, the type V fiber generator 210, and the type VI fiber generator 215 are side shaft driven.

Further, the type I fiber generator 202, the type II fiber generator 208, and the type III fiber generator 206 have two or more spokes 2022. The concentric ring 2023 has an inner diameter that mates with the drive shaft.

Further, the diameter of the ring line of the type I fiber generator 202 and the type II fiber generator 208 is 1 mm to 15 mm, the diameter of the ring is 40mm to 300mm, the number of the ring is 1 to 50, and the distance between two adjacent fiber generators is 20mm to 100 mm.

In the further I-shaped fiber generator 202, the outer edge of the circular ring is provided with a V-shaped opening, and the opening angle is 20-150 degrees.

In the type II fiber generator 208, the outer edge of the ring is provided with a U-shaped opening, and the width of the U-shaped opening is smaller than the line radius r.

Further type III fiber generators 206, T-shaped discs 2061 have a diameter of 40mm to 300mm, a tip height of 3mm to 60mm, a tip thickness of 1 mm to 20mm, a total thickness of 5mm to 40mm, a number of groups of 1 to 50, and a spacing between two type III fiber generators 206 of 20mm to 100 mm.

The section of the IV-type fiber generator 204, the V-type fiber generator 210 and the VI-type fiber generator 215 is cross-shaped, the height of the end part is 3mm to 60mm, the thickness of the end part is 1 mm to 20mm, the total thickness is 5mm to 40mm, the inner side of the fiber generator is provided with an annular driving wheel track, one group of the annular driving wheel tracks is 1 to 50, and the distance between the two IV-type fiber generators 204 or the V-type fiber generator 210 or the VI-type fiber generator 215 is 20mm to 100 mm.

In the further IV-type fiber generator 204, the outer edge of the end part is provided with a V-shaped opening, and the opening angle is 20 degrees to 150 degrees. The inner tracks are gears, which are matched with the teeth of the driving gear 206 and the driven gear 205, and the central connecting line of the driving gear 206 and the driven gear 205 passes through the center of the IV-type fiber generator 204.

In the further V-shaped fiber generator 210, the outer edge of the end part is provided with a U-shaped opening, and the width of the U-shaped opening is 1 mm to 5 mm. The inner track is a V-shaped cross section ring, the shape of the inner track is matched with that of the driven V-shaped wheel 211 and the driving V-shaped wheel 212, and the central connecting line of the driven V-shaped wheel 211 and the driving V-shaped wheel 212 passes through the center of the V-shaped fiber generator 210.

Further, the inner side track of the VI-type fiber generator 215 is a U-shaped cross-section ring, which is matched with the shapes of the passive U-shaped wheel 213 and the active U-shaped wheel 214, and the center connecting line of the passive U-shaped wheel 213 and the active U-shaped wheel 214 passes through the center of the VI-type fiber generator 215.

The sealing cover plate 300 has two structural forms, wherein a central shaft driving form consists of a sealing upper cover plate I301 and a sealing lower cover plate I302, and a side shaft driving form consists of a sealing upper cover plate II303 and a sealing lower cover plate II 304.

Further central shaft driven form seal caps are used in conjunction with type I fiber generators 202, type II fiber generators 208, and type III fiber generators 206.

Further side shaft driven form seal caps are used in conjunction with type IV fiber generators 204, type V fiber generators 210, and type VI fiber generators 215. Further sealed apron I302 and sealed apron II304 down are the groove structure, correspond fibre generator department and open the slotted hole, and the recess is UNICOM all around between the fibre generator, closely cooperates with sealed upper cover I301 and sealed upper cover II303, makes sealed apron 300 form hollow structure, and gas can evenly distributed in inside.

The further sealing lower cover plate I302 is sealed and fixed with the solution tank 400 and can move back and forth together.

The joint of the lower sealing cover plate II304 and the solution tank 400 is further provided with a track which can move back and forth along with the fiber generator 200 relative to the solution tank 400.

The side edges of the sealing lower cover plate I302 and the sealing lower cover plate II304 are provided with an air inlet and an air outlet which are connected with the air supply device 600.

Further, the long slotted hole is formed in the position, corresponding to the fiber generator, of the upper sealing cover plate I301, so that the fiber generator can rotate freely, air outlet holes are formed in the two sides of the fiber generator, and the gas can increase the output of nano fibers during spinning.

Further sealed upper cover plate II303 corresponds the fiber generator export and sets up 2 circular exports, makes fiber generator can the free rotation, sets up the venthole in fiber generator both sides, can make gaseous increase nanofiber's output when the spinning.

The solution tank 400 is divided into a movable solution tank and a fixed solution tank.

The further mobile solution tanks are divided into a type I solution tank 402, a type II solution tank 403 and a type III solution tank 405, and liquid inlet and outlet ports are arranged on the side edges, connected with the circulating liquid supply device 700 and connected with a linear slide rail 511.

Further, the type I solution tank 402 is matched with the rolling bearing 401, and the height of the spinning solution 701 is h1+ d < h < h 2.

Further, the type II solution tank 403 is matched with the rolling bearing 401 and is matched with the solution cover plate 404, and the height of the spinning solution 701 is h1< h < h1+ h 3.

Further solution tank cover plate 404 is provided with a long slot hole corresponding to the fiber generator to seal the bottom solution.

Further type III solution tank 405 and rolling bearing 401 cooperate, set up V-shaped groove corresponding to fiber generator department, and the annular groove all around links together all V-shaped grooves.

The bottom of the further type III solution tank 405 and the solution cover plate 408 enclose the circumferential annular groove.

Further spinning solution 701 level h1< h < h1+ h3, with the end of type VI fiber generator 215 immersed in the solution.

The further stationary solution tank is a type IV solution tank 407, which is fitted with a linear bearing 406, stationary during operation, and the fiber generator reciprocates inside.

The reciprocating rotary mechanism 500 has 5 structural forms. The fiber generator 200 reciprocates while rotating during the spinning operation.

The further moving and rotating mechanism 500 is composed of a linear bearing 501, a rolling bearing 502, a driven synchronous pulley 503, a driven shaft 504, a rolling bearing 505, a synchronous belt 506, a servo motor 507, a driving shaft 508, a driving synchronous pulley 509, an air cylinder 510 and a linear sliding rail 511.

The further driving synchronous pulley 509 and the driven synchronous pulley 503 have the same tooth profile and the same number of teeth, and are connected together by a synchronous belt 506.

Further, the center hole of the driven synchronous pulley 503 has a double-plane step, and grooves are formed on the two planes and the arc surface to reduce the friction force generated when the center shaft reciprocates. One end of the driven shaft 504 is provided with two platform surfaces which are matched with the central hole of the driven synchronous pulley 503, so that the driven synchronous pulley 503 can drive the driven shaft 504 to rotate through the platform surfaces on one hand, and the driven shaft 504 can reciprocate in the central hole of the driven synchronous pulley 503 on the other hand.

The driven timing pulley 503 is fixed between two rolling bearings 505 and is axially restrained. The synchronous belt 506 is made of polyurethane and glass fiber and has insulating property.

Further, the linear bearing 501 is supported by a rolling bearing 502, and the drive shaft 201 is supported by the linear bearing so as to axially reciprocate, and when the drive shaft 201 rotates, revolves together with the linear bearing 501.

The linear slide rail 511 is connected with the type I solution tank 402, and the driving shaft 201 and the driven shaft 504 are driven to reciprocate together when the air cylinder 510 pushes the type I solution tank 402. FIG. 2

The reciprocating rotary mechanism 500 is characterized by comprising a linear bearing 501, a rolling bearing 502, a driven shaft 512, a driven round belt pulley 513, a cylinder 510, a rolling bearing 505, a round belt 514, a servo motor 507, a driving shaft 508, a driving round belt pulley 515 and a linear sliding rail 511.

The further driving round belt pulley 515 is the same diameter and the same type as the driven round belt pulley 513 and is connected together by a round belt 514. The driving pulley 515 and the driven pulley 513 are made of engineering plastics or resins with insulating and wear-resisting properties.

Further, the central hole of the driven pulley 513 has two plane steps, and grooves are formed on the two planes and the arc surface to reduce the friction force generated when the central shaft reciprocates. One end of the driven shaft 512 is provided with two platform surfaces which are matched with the central hole of the driven circular belt pulley 513, so that the driven shaft 512 is driven to rotate by the driven circular belt pulley 513 through the platform surfaces, and the driven shaft 512 can reciprocate in the central hole of the driven circular belt pulley 513.

A further driven pulley 513 is fixed between the two rolling bearings 505 and is axially limited. The circular belt 514 is made of polyurethane and has insulating property.

The linear bearing 501 is supported by a rolling bearing 502, and the drive shaft 203 is supported by the linear bearing so as to axially reciprocate, and when the drive shaft 203 rotates, revolves together with the linear bearing 501. The linear slide rail 511 is connected with the type II solution tank 403, and when the driven shaft 512 is pushed by the air cylinder 510, the driving shaft 203 and the type II solution tank 403 are driven to reciprocate together.

The reciprocating rotary mechanism 500 is characterized by comprising a linear bearing 501, a rolling bearing 502, a driving rotating shaft 516, a rolling bearing 505, a servo motor 507, a linear sliding rail 517, a servo motor 518, a screw rod 519, a nut 520, a rolling bearing 521 and a linear sliding rail 511.

Further drive shaft 516 is supported and axially restrained by rolling bearing 505. The servo motor 507 is connected to a driving shaft 516 and fixed to the linear guide 517, the driving shaft 516 is connected to the driving shaft 205, the linear bearing 501 is supported by the rolling bearing 502, and the driving shaft 205 axially reciprocates and is supported by the linear bearing 501, and rotates together with the linear bearing 501 when the driving shaft 205 rotates.

The further linear slide 511 is connected to the type III solution tank 405, the nut 520 is connected to the type III solution tank 405, and the lead screw 519 is engaged with the nut 520, supported and axially restrained by the rolling bearing 521.

The further screw rod 519 is a bidirectional reciprocating screw rod, and when the servo motor 518 drives the screw rod 519 to rotate in a single direction, the nut 520 drives the III-type solution tank 405 and the driving shaft to reciprocate together. The screw rod 519 is a ball screw or a trapezoidal screw, the servo motor 518 drives the screw rod 519 to rotate in the forward and reverse directions, and the nut 520 drives the type III solution tank 405 and the driving shaft to reciprocate together. FIG. 5

The reciprocating rotary mechanism 500 is characterized by comprising a driven shaft 522, a driven gear 523, a rolling bearing 505, a cylinder 510, a servo motor 507, a linear sliding rail 517, a driving shaft 508 and a driving gear 524.

The further driving gear 524 and driven gear 523 have the same module and number of teeth and are directly meshed. The driving gear 524 is fixed to the driving shaft 508, and the driven gear 523 is fixed to the driven shaft 522.

The driving shaft 508 and the driven shaft 522 are supported and restrained by a rolling bearing 505. The linear sliding rail 517 is connected with the servo motor 507 and the mounting plate of the rolling bearing 505. The servo motor 507 is connected with the driving gear shaft, and drives the driving shaft 207 to rotate through the driving gear 524 and the driven gear 523. The cylinder 510 drives the driving shaft to reciprocate by telescoping. FIG. 6

The reciprocating rotation mechanism 500 is characterized by comprising a driven shaft 525, a fixing nut 526, a driven gear 527, a linear bearing 501, a rolling bearing 502, a servo motor 507, a driving shaft 508, a driving gear 528 and a rolling bearing 505.

The further driving gear 528 and driven gear 527 are modular and toothed and mesh directly. The width of the drive gear 528 is the width of the driven gear 527 plus the distance traveled by the driven shaft 525.

A further pinion gear 528 is fixed to the axle shaft 508 and is capable of transmitting torque for rotation therewith.

The driven gear 527 is fixed to the driven shaft 525 and can rotate together with the transmission of torque. The part of the driven shaft 525 matched with the fixed nut 526 is a bidirectional reciprocating screw.

Further, the linear bearing 501 is supported by a rolling bearing 502, and the driven shaft 525 is supported by the linear bearing 501 for reciprocating motion, and rotates together with the linear bearing 501 when the driven shaft 525 rotates.

When the driven gear 527 rotates the driven shaft 525, the bidirectional reciprocating screw thread of the driven shaft 525 is engaged with the internal screw thread of the fixing nut 526, and the driving shaft is rotated and reciprocated as shown in fig. 7.

Examples

As shown in fig. 1 and 2, the moving and rotating mechanism 500 is composed of a linear bearing 501, a rolling bearing 502, a driven timing pulley 503, a driven shaft 504, a rolling bearing 505, a timing belt 506, a servo motor 507, a driving shaft 508, a driving timing pulley 509, an air cylinder 510, and a linear guide 511. The driving timing pulley 509 and the driven timing pulley 503 have the same tooth profile and the same number of teeth, and are connected together by a timing belt 506. The center hole of the driven timing pulley 503 has a double-plane step, and grooves are formed on the two planes and the arc surface to reduce the friction force generated when the center shaft reciprocates, as shown in the side sectional view of fig. 3. One end of the driven shaft 504 is provided with two platform surfaces which are matched with the central hole of the driven synchronous pulley 503, so that the driven synchronous pulley 503 can drive the driven shaft 504 to rotate through the platform surfaces on one hand, and the driven shaft 504 can reciprocate in the central hole of the driven synchronous pulley 503 on the other hand. The driven timing pulley 503 is fixed between two rolling bearings 505 and is axially restrained. The synchronous belt 506 is made of polyurethane and glass fiber and has insulating property. The linear bearing 501 is supported by a rolling bearing 502, and the drive shaft 201 is supported by the linear bearing so as to axially reciprocate, and when the drive shaft 201 rotates, it revolves together with the linear bearing 501. The linear slide rail 511 is connected with the type I solution tank 402, and the driving shaft 201 and the driven shaft 504 are driven to reciprocate together when the air cylinder 510 pushes the type I solution tank 402.

The fiber generator 200 comprises a central driving shaft 201 and 13I-type fiber generators 202, the I-type fiber generators 202 are sleeved on the central driving shaft 201, the I-type fiber generators 202 are composed of a ring 2021 with the line diameter of 5mm and the central diameter of 100mm, two spokes 2022 and a concentric ring 2023 with the inner diameter of 30mm, the V-shaped opening angle of the ring is 70 degrees, the distance between two adjacent I-type fiber generators 202 is 40mm, and the central driving shaft 201 is positioned between rolling bearings 401 at two ends of an I-type solution tank 402 and reciprocates together with an I-type solution box. The type I fiber generator 202 brings the solution at the bottom of the solution tank to the top during the rotation, and simultaneously applies high voltage static electricity to the type I fiber generator 202 by the high voltage generating device 800, the applied voltage is +80KV in this embodiment, the fiber collector 100 is grounded, a high voltage electrostatic field of 80KV is generated between the type I fiber generator 202 and the fiber collector 100, the solution at the top of the type I fiber generator 202 starts to form a Taylor cone and start spinning, and is deposited on the base material on the lower surface of the fiber collector, the air supply device 600 supplies compressed air of 2L/min to the hollow inside the sealing cover plate 300, and the spinning process is accelerated through the air outlet holes at both sides of the fiber generator.

The circulation liquid supply device 700 pumps out the old solution in the solution tank through two peristaltic pumps, and injects the new solution into the solution tank, so that the solution in the solution tank is maintained in a certain concentration range for a long time, and the I-type fiber generator 202 moves back and forth uniformly in 10S stroke, thereby obtaining the uniform nanofiber membrane.

The foregoing shows and describes the general principles of the present invention, with its principal features and advantages, and further, various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The closed electrostatic spinning device is characterized by comprising a fiber collector, a fiber generator, a solution tank, a reciprocating rotary mechanism and a high-voltage generating device, wherein the fiber generator is arranged in the solution tank and is connected with the reciprocating rotary mechanism for transmission to realize that the fiber generator rotates and reciprocates, the fiber generator and the fiber collector are respectively connected with the positive electrode and the negative electrode of the high-voltage generating device, and a high-voltage electrostatic field for realizing electrostatic spinning is formed between the fiber collector and the fiber generator.

2. The annular reciprocating closed electrospinning apparatus of claim 1, wherein the reciprocating rotary mechanism comprises five structural forms:

the reciprocating rotary mechanism mainly comprises a linear bearing, a rolling bearing, a driven synchronous belt pulley, a driven shaft, a rolling bearing, a synchronous belt, a servo motor, a driving shaft, a driving synchronous belt pulley, a cylinder and a linear slide rail, wherein the driving synchronous belt pulley is connected with the driven synchronous belt pulley through the synchronous belt, a central hole of the driven synchronous belt pulley is provided with a biplanar step, one end of the driven shaft is provided with two platform surfaces matched with a central hole of the driven synchronous belt pulley for realizing that the driven synchronous belt pulley drives the driven shaft to rotate and realizing that the driven shaft reciprocates in the central hole of the driven synchronous belt pulley, the driven synchronous belt pulley is fixed between the two rolling bearings for axial limiting, the linear bearing is supported by the rolling bearing, the axial reciprocating motion of the driving shaft is supported by the linear bearing, the driving shaft synchronously rotates with the linear bearing, the, driving the driving shaft and the driven shaft to synchronously reciprocate;

or the reciprocating rotary mechanism mainly comprises a linear bearing, a rolling bearing, a driven shaft, a driven circular belt pulley, a cylinder, a rolling bearing, a circular belt, a servo motor, a driving shaft, a driving circular belt pulley and a linear slide rail, wherein an output shaft of the servo motor is connected with the driving circular belt pulley through the driving shaft, the driving circular belt pulley is connected with the driven circular belt pulley through the circular belt, a central hole of the driven circular belt pulley is provided with a biplanar step, grooves are arranged on two planes and arc surfaces to reduce friction force generated when the central shaft reciprocates, one end of the driven shaft is provided with two platform surfaces matched with the central hole of the driven circular belt pulley for realizing that the driven circular belt pulley drives the driven shaft to rotate and simultaneously realizes that the driven shaft reciprocates in the central hole of the driven circular belt pulley, the driven circular belt pulley is fixed between the two rolling bearings, the other end of the driven shaft is connected with one end of the driving shaft through a coupler, the linear bearing is supported by a rolling bearing, the driving shaft axially reciprocates and is supported by the linear bearing, the other side of the driving shaft extends into the solution tank and is fixed on the side wall of the solution tank through the bearing, a stopping step for realizing axial limiting of the driving shaft is arranged at the connecting part of the driving shaft and the solution tank bearing, a fiber generator is arranged on the driving shaft in the solution tank, and the solution tank is slidably matched on the linear slide rail and driven by the driving shaft to realize reciprocating movement;

or the reciprocating rotary mechanism mainly comprises a linear bearing, a rolling bearing, a driving shaft, a rolling bearing, a servo motor, a linear slide rail, a servo motor, a cylinder, a screw rod, a nut, a rolling bearing and a linear slide rail, wherein the driving shaft is supported by the rolling bearing and axially limited, the servo motor is connected with the driving rotating shaft and fixed on the linear slide rail, the driving rotating shaft is connected with the driving shaft, the linear bearing is supported by the rolling bearing, the driving shaft axially reciprocates and is supported by the linear bearing, the driving shaft synchronously rotates with the linear bearing, the linear slide rail is in sliding fit with the III-type solution tank, the nut is connected with the III-type solution tank, the screw rod is matched with the nut and is supported by the rolling bearing and axially limited, the screw rod is a bidirectional reciprocating screw rod, when the servo motor drives the screw rod to unidirectionally rotate, the servo motor drives the screw rod to rotate forward and backward, and the nut drives the III-type solution tank and the driving shaft to synchronously reciprocate;

or the reciprocating rotary mechanism mainly comprises a driven shaft, a driven gear, a rolling bearing, a cylinder, a servo motor, a linear slide rail, a driving shaft and a driving gear, wherein an output shaft of the servo motor is connected with the driving gear through the driving shaft, the driving gear is meshed with the driven gear, the driven gear is fixed on the driven shaft, the driving shaft and the driven shaft are respectively supported and limited through the rolling bearing, the servo motor and a rolling bearing mounting plate are matched on the linear slide rail in a sliding manner, one end of the driven shaft is connected with the cylinder fixed on the support, the rolling bearing mounting plate is driven by the stretching of the cylinder to reciprocate along the linear slide rail, the other end of the driven shaft is connected with one end of the driving shaft through a coupler, the other side of the driving shaft extends into the solution tank and is fixed on;

or the reciprocating rotary mechanism mainly comprises a driven shaft, a fixed nut, a driven gear, a linear bearing, a rolling bearing, a servo motor, a driving shaft, a driving gear and a rolling bearing, wherein an output shaft of the servo motor is connected with the driving gear through the driving shaft, the driving shaft is supported through the rolling bearing, the driving gear is meshed with the driven gear, the width of the driving gear is the width of the driven gear plus the moving distance of the driven gear, the driven gear is fixed on the driven shaft, the driven shaft reciprocates and is supported by the linear bearing and the fixed nut, the linear bearing is supported by the rolling bearing, the driven shaft and the linear bearing synchronously rotate, the matching part of the driven shaft and the fixed nut is a bidirectional reciprocating screw structure, the tail end of the driven shaft is connected with one end of the driving shaft through a coupler, the other side, the driving shaft in the solution tank is provided with a fiber generator, and when the driven gear drives the driven shaft to rotate, the bidirectional reciprocating screw thread on the driven shaft is matched with the internal thread of the fixed nut so as to drive the driving shaft to rotate and move in a reciprocating manner.

3. The annular reciprocating closed-type electrospinning apparatus of claim 1, wherein: the fiber generator comprises six structural forms, wherein a type I fiber generator, a type II fiber generator and a type III fiber generator are used for a central shaft driving mode, and a type IV fiber generator, a type V fiber generator and a type VI fiber generator are used for a side shaft driving mode;

the I-type fiber generator, the II-type fiber generator and the III-type fiber generator are respectively provided with at least two spokes, the inner diameter of a concentric ring is matched with the driving shaft, the outer edge of the ring of the I-type fiber generator is provided with a V-shaped opening, the outer edge of the ring of the II-type fiber generator is provided with a U-shaped opening, the diameter of the T-shaped disc of the III-type fiber generator is 40-300mm, the height of the end part is 3-60mm, the thickness of the end part is 1-20mm, and the total thickness is 5-40 mm;

the sections of the IV-type fiber generator, the V-type fiber generator and the VI-type fiber generator are all in a cross shape, the height of the end part is 3-60mm, the thickness of the end part is 1-20mm, the total thickness is 5-40mm, the inner side of the fiber generator is provided with an annular driving wheel track, the outer edge of the end part of the IV-type fiber generator is provided with a V-shaped opening, the inner side track is provided with a gear, the gear is in meshing transmission with a driving gear and a driven gear, the central connecting line of the driving gear and the driven gear passes through the circle center of the IV-type fiber generator, and the driving; the outer edge of the end part of the V-shaped fiber generator is provided with a U-shaped opening, the inner side track is a V-shaped section ring, the V-shaped section ring is matched with a driven V-shaped wheel and a driving V-shaped wheel for transmission, the central connecting line of the driven V-shaped wheel and the driving V-shaped wheel passes through the circle center of the V-shaped fiber generator, and the driving V-shaped wheel is fixed on a driving shaft; the inner side track of the VI-type fiber generator is a U-shaped section ring, the U-shaped section ring is in matched transmission with a driven U-shaped wheel and a driving U-shaped wheel, the central connecting line of the driven U-shaped wheel and the driving U-shaped wheel passes through the circle center of the VI-type fiber generator, and the driving U-shaped wheel is fixed on a driving shaft.

4. The annular reciprocating closed-type electrospinning apparatus of claim 1, wherein: the annular reciprocating movement closed type electrostatic spinning device further comprises a sealing cover plate, the sealing cover plate is installed on the solution tank and used for locally sealing the solution in the solution tank, and a fiber generator outlet is formed in the sealing cover plate and enables the fiber generator to freely rotate.

5. The annular reciprocating closed-type electrospinning apparatus of claim 4, wherein: the sealing cover plate comprises a central shaft driving type sealing cover plate and a side shaft driving type sealing cover plate, wherein the central shaft driving type sealing cover plate is matched with an I-type fiber generator, a II-type fiber generator and a III-type fiber generator for use, the side shaft driving type sealing cover plate is matched with an IV-type fiber generator, a V-type fiber generator and a VI-type fiber generator for use, the side shaft driving type sealing cover plate consists of an upper sealing cover plate II and a lower sealing cover plate II, the lower sealing cover plate I and the lower sealing cover plate II are both of a groove structure, a long groove hole is formed at the position corresponding to the fiber generator, the peripheries of grooves among the fiber generators are communicated and are respectively tightly matched with the upper sealing cover plate I and the upper sealing cover plate II, so that the sealing cover plate forms a hollow structure, gas is uniformly distributed in the sealing cover plate, the lower sealing cover plate I is fixedly connected with the movable solution tank in a, the joint of the lower sealing cover plate II and the fixed solution tank is provided with a track which can synchronously reciprocate along with the fiber generator relative to the solution tank.

6. The annular reciprocating closed-type electrospinning apparatus of claim 1, wherein: the annular reciprocating movement closed electrostatic spinning device further comprises a gas supply device, the gas supply device is connected with a gas inlet hole in the sealing cover plate, gas outlet holes are formed in the sealing cover plate and distributed on two sides of each fiber generator, and the gas outlet holes are used for accelerating the generation speed of the nano fibers in the spinning process, so that the output of the nano fibers is increased.

7. The annular reciprocating closed-type electrospinning apparatus of claim 1, wherein: the solution tank is divided into a movable solution tank and a fixed solution tank, the movable solution tank is divided into an I-type solution tank, an II-type solution tank and a III-type solution tank which are in sliding fit with a linear slide rail, the solution tank and a fiber generator synchronously reciprocate under the drive of a reciprocating rotary mechanism, liquid inlet and outlet ports are arranged on the side edges of the movable solution tank and are connected with a circulating liquid supply device, the I-type solution tank is matched with a rolling bearing, the II-type solution tank is matched with the rolling bearing and is simultaneously matched with a solution cover plate, a long slotted hole is formed in the position of the solution cover plate, corresponding to the fiber generator, for sealing the solution at the bottom, the III-type solution tank is matched with the rolling bearing, V-shaped tanks are arranged at the position corresponding to the fiber generator, all the V-shaped tanks are communicated together by peripheral annular grooves, the annular grooves at the periphery are sealed by the bottom of the, when the fiber generator works, the fiber generator is fixed and moves in the fiber generator in a reciprocating way.

8. The annular reciprocating closed-type electrospinning apparatus of claim 1, wherein: the annular reciprocating movement closed type electrostatic spinning device further comprises a circulating liquid supply device, the circulating liquid supply device is communicated with the solution tank through a pipeline, fresh solution is injected into the solution tank through a pump or gas with pressure, and circulating solution is pumped into the liquid supply device through the pump or vacuum, so that the stability of the viscosity of the solution in the solution tank is maintained.

9. The annular reciprocating closed-type electrospinning apparatus of claim 1, comprising a plurality of fiber generators arranged in an array in a first direction;

the sealing cover plate covers an opening at the top end of the solution tank, and a plurality of windows for the fiber generator to pass through are formed in the sealing cover plate;

a fiber collector disposed opposite the fiber generator;

a high voltage generating device for forming a high voltage electrostatic field for realizing electrostatic spinning between the fiber collector and the fiber generator;

and the power device acts on the fiber generator and the sealing cover plate, can drive the fiber generator to rotate, and can drive the fiber generator and the sealing cover plate to synchronously move along the first direction.

10. The annular reciprocating closed-type electrospinning apparatus of claim 9, wherein: the fiber generator is in a circular or disc shape.

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