Electrode electrostatic spinning device

Abstract

The invention discloses an electrode electrostatic spinning device which comprises a spinning line, a U-shaped supporting frame, a first pulley, a second pulley, a third pulley, a fourth pulley, a fifth pulley, a sixth pulley, a seventh pulley, an eighth pulley, a liquid tank, a cleaning tank and a cover plate. The U-shaped supporting frame comprises a left supporting plate, a right supporting plate and a supporting base, and the U-shaped supporting frame is hollow; a liquid tank is arranged on the lower portion of the left side of the supporting base. Wherein a spinning line is wound on the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley and the eighth pulley; the first pulley is a driving pulley and is made of an alloy material, and the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley and the eighth pulley are used for changing the direction of a spinning thread and tensioning the spinning thread at the same time. By the adoption of the technical scheme, the defect that a spinning electric field is affected by existing reciprocating smearing is overcome, and more stable and efficient spinning is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatic spinning, and in particular relates to an electrode electrostatic spinning device. Background Art

[0002] Needle-free electrospinning is a new type of electrospinning technology with the advantages of high fiber yield, simple equipment structure, easy use and maintenance. Compared with conventional needle-type electrospinning technology, needle-free electrospinning can greatly increase the yield of nanofibers. Needle-free electrospinning uses electric field force to stretch and overcome surface tension, and ejects the polymer solution from the spinneret to form an ultrafine fluid jet. The solution jet is gradually stretched and thinned under the combined action of electrostatic field force, surface tension, viscosity, charge repulsion, etc., and accompanied by the evaporation of the solvent, it eventually forms micro-nano fibers and deposits on the collecting electrode.

[0003] Needle-free electrospinning technology has become a research hotspot in the field of nanofiber preparation, such as document 1 (Chinese patent CN201020650021.5, spiral blade nanofiber generator and electrostatic spiral spinning device) and document 2 (Chinese patent CN201610569146.7, a needle-free electrospinning assembly based on fractal structure) using feeding methods such as spinning head rotation or melt flow attachment on a circular surface to form a solution or melt free surface, and electrospinning is performed under the action of an electrostatic field. However, in these patents, there is electric field interference between the pole pieces of the electrospinning electrodes, which affects the uniformity of the nanofibers in the lateral direction, and there is also the problem of fast solvent evaporation. Document 3 (Chinese patent CN200880025156.8, a spinning method of a liquid matrix, a device for producing nanofibers by electrostatic spinning of a liquid matrix, and a spinning electrode for the device) uses a stationary metal wire as a spinning electrode to perform electrostatic spinning when passing through a reciprocating coating liquid. The reciprocating coating liquid device used in this method will change the electric field of the spinning electrode, affecting the spinning process and the quality of the nanofibers, and there is also a problem of low nanofiber yield. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electrode electrostatic spinning device.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] An electrode electrostatic spinning device comprises: a spinning line, a U-shaped support frame, a first pulley, a second pulley, a third pulley, a fourth pulley, a fifth pulley, a sixth pulley, a seventh pulley, an eighth pulley, a liquid tank, a cleaning tank and a cover plate; the spinning line is woven into a complete ring by three fine steel wires with spikes, and is wound around the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley and the eighth pulley; the U-shaped support frame comprises: a left support plate, a right support plate and a support base, and the U-shaped support frame is hollow inside. A liquid tank is provided at the lower left portion of the support base, a cleaning tank is provided at the lower right portion of the support base, the first pulley is installed at the inner hollow portion of the upper end of the left support plate through a rotating shaft; the eighth pulley is installed at the inner hollow portion of the upper end of the right support plate through a rotating shaft; the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, and the seventh pulley are installed at the inner hollow portion of the support base through a rotating shaft, the second pulley and the third pulley are located in the liquid tank, the sixth pulley and the seventh pulley are located in the cleaning tank, the fourth pulley is located at the upper right portion of the liquid tank, and the fifth pulley is located at the upper left portion of the cleaning tank.

[0007] Preferably, the left support plate includes: a first side plate and a second side plate, the first side plate and the second side plate are arranged in parallel; the right support plate includes a third side plate and a fourth side plate, the third side plate and the fourth side plate are arranged in parallel; the support base includes: a first T-shaped side plate and a second T-shaped side plate, the first T-shaped side plate and the second T-shaped side plate are arranged in parallel, the first T-shaped side plate includes: a first left side plate, a first middle plate and a first right side plate, the second T-shaped side plate includes: a second left side plate, a second middle plate and a second right side plate; the bottom end of the first side plate is connected to the left side of the first left side plate, the bottom end of the second side plate is connected to the left side of the second left side plate, the bottom end of the third side plate is connected to the right side of the first right side plate, and the bottom end of the second side plate is connected to the right side of the second right side plate.

[0008] Preferably, the liquid tank can be removably installed at the lower end of the first side plate, the lower end of the second side plate, the lower left end of the first middle plate, and the lower left end of the second middle plate, and the cleaning tank can be removably installed at the lower end of the third side plate, the lower end of the fourth side plate, the lower right end of the first middle plate, and the lower right end of the second middle plate.

[0009] Preferably, the first pulley is installed on the inner sides of the first side plate and the second side through a rotating shaft, the eighth pulley is installed on the inner sides of the third side plate and the fourth side through a rotating shaft, the fourth pulley is installed on the inner sides of the right ends of the first left plate and the second left plate through a rotating shaft, and the fifth pulley is installed on the inner sides of the left ends of the first right plate and the second right plate through a rotating shaft; a seventh side plate is provided on the inner side of the first left plate, an eighth side plate is provided on the inner side of the second left plate, and the second pulley is installed on the inner sides of the left part of the seventh side plate and the left part of the eighth side plate through a rotating shaft; the third pulley is installed on the inner sides of the right part of the seventh side plate and the right part of the eighth side plate through a rotating shaft; a ninth side plate is provided on the inner side of the first right plate, and the inner side of the second right plate A tenth side plate is provided, and the sixth pulley is installed on the inner sides of the left part of the ninth side plate and the left part of the tenth side plate through a rotating shaft; the seventh pulley is installed on the inner sides of the right part of the ninth side plate and the right part of the tenth side plate through a rotating shaft; the first pulley and the second pulley are located on the same vertical line, the second pulley, the third pulley, the sixth pulley, and the seventh pulley are located on the same horizontal line, the seventh pulley and the eighth pulley are located on the same vertical line, the fourth pulley and the fifth pulley are located on the same horizontal line, and the horizontal line of the second pulley is lower than the horizontal line of the fourth pulley; the direction of the textile line between the third pulley and the fourth pulley is perpendicular to the horizontal direction, and the direction of the textile line between the fifth pulley and the sixth pulley is perpendicular to the horizontal direction.

[0010] Preferably, one side of the first pulley is connected to a positive power supply, and the other side is connected to a transmission gear, and the spinning line is wound around the surface of the first pulley in one circle; the driving motor provides rotational force to the first pulley through the transmission gear.

[0011] Preferably, the liquid tank is used to store spinning solution, and the liquid tank is provided with a spinning solution inlet; the cleaning tank is used to store cleaning water, and the cleaning tank is provided with a cleaning water inlet.

[0012] Preferably, a cover plate is installed on the upper part of the support base to shield the liquid tank and the cleaning tank.

[0013] Preferably, a movable cleaning brush is placed in the hollow space between the right portion of the ninth side plate and the tenth side plate.

[0014] The electrode electrostatic spinning device of the present invention has a spinning line made of fine steel wire with burrs. When the spinning liquid is full, droplets will be formed on the sharp thorns. In the high-voltage electric field, the small droplets are stimulated into fibers, breaking through the technical bottleneck of non-needle spinning in principle. The circular motion of the spinning line and the storage liquid tank and cleaning tank design realize the functions of continuous spinning and automatic cleaning, breaking through the drawbacks of repeated smearing affecting the spinning electric field, and realizing more stable and efficient spinning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of an electrode electrospinning device according to an embodiment of the present invention;

[0017] Figure 2 is a structural schematic diagram of the first T-shaped side plate;

[0018] Among them, 1 is a spinning line, 21 is a first pulley, 22 is a second pulley, 23 is a third pulley, 24 is a fourth pulley, 25 is a fifth pulley, 26 is a sixth pulley, 27 is a seventh pulley, 28 is an eighth pulley, 3 is a liquid tank, 4 is a cleaning tank, 5 is a U-shaped support frame, 6 is a cover plate, 10 is a first left plate, 20 is a first middle plate, and 30 is a first right plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment 1:

[0022] like Figure 1As shown, an embodiment of the present invention provides an electrode electrospinning device, including: a spinning line, a U-shaped support frame, a first pulley, a second pulley, a third pulley, a fourth pulley, a fifth pulley, a sixth pulley, a seventh pulley, an eighth pulley, a liquid tank, a cleaning tank and a cover plate; the spinning line is woven into a complete ring by 3 thin steel wires with spikes, and is wound around the first pulley, the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley and the eighth pulley; the U-shaped support frame includes: a left support plate, a right support plate and a support base, and the U-shaped support frame is hollow inside. A liquid tank is provided at the lower left portion of the support base, a cleaning tank is provided at the lower right portion of the support base, the first pulley is installed at the inner hollow portion of the upper end of the left support plate through a rotating shaft; the eighth pulley is installed at the inner hollow portion of the upper end of the right support plate through a rotating shaft; the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, and the seventh pulley are installed at the inner hollow portion of the support base through a rotating shaft, the second pulley and the third pulley are located in the liquid tank, the sixth pulley and the seventh pulley are located in the cleaning tank, the fourth pulley is located at the upper right portion of the liquid tank, and the fifth pulley is located at the upper left portion of the cleaning tank.

[0023] As an implementation method of an embodiment of the present invention, the left support plate includes: a first side plate and a second side plate, the first side plate and the second side plate are arranged in parallel; the right support plate includes a third side plate and a fourth side plate, the third side plate and the fourth side plate are arranged in parallel; the support base includes: a first T-shaped side plate and a second T-shaped side plate, the first T-shaped side plate and the second T-shaped side plate are arranged in parallel, such as Figure 2 As shown, the first T-shaped side panel includes: a first left side panel, a first middle panel and a first right side panel, and the second T-shaped side panel includes: a second left side panel, a second middle panel and a second right side panel; the bottom end of the first side panel is connected to the left side of the first left side panel, the bottom end of the second side panel is connected to the left side of the second left side panel, the bottom end of the third side panel is connected to the right side of the first right side panel, and the bottom end of the second side panel is connected to the right side of the second right side panel. The first side panel, the second side panel, the third side panel and the fourth side panel have the same structure and shape, and the first T-shaped side panel and the second T-shaped side panel have the same structure and shape.

[0024] As an implementation mode of an embodiment of the present invention, the liquid tank can be removably installed at the lower end of the first side plate, the lower end of the second side plate, the lower left end of the first middle plate, and the lower left end of the second middle plate, and the cleaning tank can be removably installed at the lower end of the third side plate, the lower end of the fourth side plate, the lower right end of the first middle plate, and the lower right end of the second middle plate.

[0025] As an implementation method of the embodiment of the present invention, the first pulley is installed on the inner side of the first side plate and the second side through a rotating shaft, the eighth pulley is installed on the inner side of the third side plate and the fourth side through a rotating shaft, the fourth pulley is installed on the inner side of the right end of the first left side plate and the second left side plate through a rotating shaft, and the fifth pulley is installed on the inner side of the left end of the first right side plate and the second right side plate through a rotating shaft; the inner side of the first left side plate is provided with a seventh side plate, the inner side of the second left side plate is provided with an eighth side plate, the second pulley is installed on the inner side of the left part of the seventh side plate and the left part of the eighth side plate through a rotating shaft; the third pulley is installed on the inner side of the right part of the seventh side plate and the right part of the eighth side plate through a rotating shaft; the inner side of the first right side plate is provided with a ninth side plate, the inner side of the second right side plate is provided with a tenth side plate, the sixth pulley is installed on the inner side of the left part of the ninth side plate and the left part of the tenth side plate through a rotating shaft; the seventh pulley is installed on the inner side of the right part of the ninth side plate and the right part of the tenth side plate through a rotating shaft. The seventh side plate, the eighth side plate, the ninth side plate and the tenth side plate have the same structure and shape. The first pulley and the second pulley are located on the same vertical line, the second pulley, the third pulley, the sixth pulley, and the seventh pulley are located on the same horizontal line, the seventh pulley and the eighth pulley are located on the same vertical line, the fourth pulley and the fifth pulley are located on the same horizontal line, and the horizontal line of the second pulley is lower than the horizontal line of the fourth pulley; the direction of the textile line between the third pulley and the fourth pulley is perpendicular to the horizontal direction, and the direction of the textile line between the fifth pulley and the sixth pulley is perpendicular to the horizontal direction. A movable cleaning brush is placed in the hollow between the right part of the ninth side plate and the tenth side plate.

[0026] Furthermore, a connecting plate is fixedly installed at the lower end of the first middle plate and the lower end of the second middle plate, and a plurality of through holes are provided on the sides of the first middle plate and the second middle plate. The first middle plate, the second middle plate, the connecting plate, the right side plate of the liquid tank and the left side plate of the cleaning tank constitute a ventilation slot.

[0027] Furthermore, the first pulley is a driving pulley, which is made of alloy material and has good conductivity. One side of the pulley is connected to the positive power supply, and the other side is connected to the transmission gear. The spinning line is wound around the surface of the first pulley, so that the spinning line and the surface of the first pulley have sufficient contact area, which increases the friction force and ensures that the positive power supply of the first pulley can be transmitted to the spinning line. The second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley, and the eighth pulley are used to change the direction of the spinning line and tighten the spinning line.

[0028] Furthermore, the liquid tank is used to store spinning solution, and the liquid tank is provided with a spinning solution inlet; the cleaning tank is used to store cleaning water, and the cleaning tank is provided with a cleaning water inlet.

[0029] Furthermore, a cover plate is installed on the upper part of the supporting base to shield the liquid tank and the cleaning tank, and at the same time can receive the spinning liquid dripping from the spinning line above it. The cover plate is easy to disassemble and can be disassembled and cleaned at any time to observe the condition of the liquid in the liquid tank and the cleaning tank below.

[0030] When the spinning head device is running, the driving motor provides rotational force to the first pulley through the rotating shaft. When the first pulley rotates, the friction between the first pulley and the spinning line drives the spinning line to do linear motion. The spinning line changes direction every time it passes through a pulley (the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley, and the eighth pulley). When the spinning line passes through the liquid tank, the spinning liquid inside will immerse the spinning line, so that the spinning line is covered with spinning liquid. When the spinning line with spinning liquid passes above the cover plate, the spinning line with positive high voltage and the negative electrode above the cover plate generate a high-voltage electric field, which excites the droplets on the spinning line to produce fibers, thereby achieving the purpose of spinning; when the spinning line passes through the cleaning tank, it passes through a cleaning brush covered with water. At this time, the cleaning brush cleans the moving spinning line. According to this process, the effect of continuous spinning is achieved.

[0031] The electrode electrostatic spinning device of the present invention has a spinning line made of fine steel wire with burrs. When the spinning liquid is full, droplets will be formed on the sharp thorns. In the high-voltage electric field, the small droplets are stimulated into fibers, breaking through the technical bottleneck of non-needle spinning in principle. The circular motion of the spinning line and the storage liquid tank and cleaning tank design realize the functions of continuous spinning and automatic cleaning, breaking through the drawbacks of repeated smearing affecting the spinning electric field, and realizing more stable and efficient spinning.

[0032] The embodiments described above are only descriptions of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An electrode electrospinning device, characterized in that: include: Spinning line, U-shaped support frame, first pulley, second pulley, third pulley, fourth pulley, fifth pulley, sixth pulley, seventh pulley, eighth pulley, liquid tank, cleaning tank and cover plate; the spinning line is woven into a complete ring by 3 thin steel wires with spikes, and is wound around the first pulley, second pulley, third pulley, fourth pulley, fifth pulley, sixth pulley, seventh pulley and eighth pulley; the U-shaped support frame includes: a left support plate, a right support plate and a support base, and the U-shaped support frame is hollow inside; the lower left side of the support base is provided with a liquid A cleaning tank is provided at the lower right side of the supporting base, the first pulley is installed at the inner hollow of the upper end of the left supporting plate through a rotating shaft; the eighth pulley is installed at the inner hollow of the upper end of the right supporting plate through a rotating shaft; the second pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley and the seventh pulley are installed at the inner hollow of the supporting base through a rotating shaft, the second pulley and the third pulley are located in the liquid tank, the sixth pulley and the seventh pulley are located in the cleaning tank, the fourth pulley is located at the upper right side of the liquid tank, and the fifth pulley is located at the upper left side of the cleaning tank.

2. The electrode electrospinning device according to claim 1, characterized in that: The left support plate includes: a first side plate and a second side plate, and the first side plate and the second side plate are arranged in parallel; the right support plate includes a third side plate and a fourth side plate, and the third side plate and the fourth side plate are arranged in parallel; the support base includes: a first T-shaped side plate and a second T-shaped side plate, and the first T-shaped side plate and the second T-shaped side plate are arranged in parallel, the first T-shaped side plate includes: a first left side plate, a first middle plate and a first right side plate, and the second T-shaped side plate includes: a second left side plate, a second middle plate and a second right side plate; the bottom end of the first side plate is connected to the left side of the first left side plate, the bottom end of the second side plate is connected to the left side of the second left side plate, the bottom end of the third side plate is connected to the right side of the first right side plate, and the bottom end of the second side plate is connected to the right side of the second right side plate.

3. The electrode electrospinning device according to claim 2, characterized in that: The liquid tank can be detachably mounted at the lower end of the first side plate, the lower end of the second side plate, the lower left end of the first middle plate, and the lower left end of the second middle plate; the cleaning tank can be detachably mounted at the lower end of the third side plate, the lower end of the fourth side plate, the lower right end of the first middle plate, and the lower right end of the second middle plate.

4. The electrode electrospinning device according to claim 3, characterized in that: The first pulley is installed on the inner sides of the first side plate and the second side through a rotating shaft, the eighth pulley is installed on the inner sides of the third side plate and the fourth side through a rotating shaft, the fourth pulley is installed on the inner sides of the right ends of the first left plate and the second left plate through a rotating shaft, and the fifth pulley is installed on the inner sides of the left ends of the first right plate and the second right plate through a rotating shaft; a seventh side plate is provided on the inner side of the first left plate, an eighth side plate is provided on the inner side of the second left plate, and the second pulley is installed on the inner sides of the left part of the seventh side plate and the left part of the eighth side plate through a rotating shaft; the third pulley is installed on the inner sides of the right part of the seventh side plate and the right part of the eighth side plate through a rotating shaft; a ninth side plate is provided on the inner side of the first right plate, and a The tenth side plate, the sixth pulley is installed on the inner sides of the left part of the ninth side plate and the left part of the tenth side plate through the rotating shaft; the seventh pulley is installed on the inner sides of the right part of the ninth side plate and the right part of the tenth side plate through the rotating shaft; the first pulley and the second pulley are located on the same vertical line, the second pulley, the third pulley, the sixth pulley, and the seventh pulley are located on the same horizontal line, the seventh pulley and the eighth pulley are located on the same vertical line, the fourth pulley and the fifth pulley are located on the same horizontal line, and the horizontal line of the second pulley is lower than the horizontal line of the fourth pulley; the direction of the textile line between the third pulley and the fourth pulley is perpendicular to the horizontal direction, and the direction of the textile line between the fifth pulley and the sixth pulley is perpendicular to the horizontal direction.

5. The electrode electrospinning device according to claim 4, characterized in that: One side of the first pulley is connected to a positive power supply, and the other side is connected to a transmission gear. The spinning line is wound around the surface of the first pulley for one circle; the driving motor provides a rotational force to the first pulley through the transmission gear.

6. The electrode electrospinning device according to claim 5, characterized in that: The liquid tank is used to store spinning solution, and the liquid tank is provided with a spinning solution inlet; the cleaning tank is used to store cleaning water, and the cleaning tank is provided with a cleaning water inlet.

7. The electrode electrospinning device according to claim 6, characterized in that: The cover plate is installed on the upper part of the supporting base and is used for shielding the liquid tank and the cleaning tank.

8. The electrode electrospinning device according to claim 7, characterized in that: A movable cleaning brush is placed in the hollow between the right portion of the ninth side plate and the tenth side plate.

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