Combined disc needleless electrospinning device

Abstract

This application discloses a combined disc needleless electrospinning device, relating to the field of needleless electrospinning technology. It not only enables large-scale production of nanofiber materials under a high-intensity uniform electric field but also avoids clogging of the spinning components caused by rapid solidification of the spinning solution. The combined disc needleless electrospinning device includes a central disc gear and multiple bevel gear disc assemblies evenly distributed circumferentially on the central disc gear. Each bevel gear disc assembly includes a conductive shaft and bevel gears and discs connected to the conductive shaft. The conductive shaft is connected to a high-voltage power supply. The bevel gears mesh with the central disc gear. The discs are located outside the central disc gear, and the centerline of the discs extends horizontally. A groove is formed on the outer cylindrical surface of the disc, and a baffle is provided within the groove. This application aims to improve the performance of electrospinning devices.

Description

Technical Field

[0001] This application relates to the field of needleless electrospinning technology, and in particular to a combined disc needleless electrospinning device. Background Technology

[0002] Electrospinning is a primary method for preparing nanofiber materials, offering advantages such as low spinning cost, a wide variety of spun materials, and a simple spinning process. The principle of electrospinning involves placing a precursor solution in a high-voltage electrostatic field. The electric field overcomes the surface tension of the precursor solution, forming a jet. The electric field stretches the jet, depositing it onto a receiving device to form nanofiber materials. It can be widely applied in various fields, including filter materials, adsorbent materials, medical materials, and sensors.

[0003] Existing technologies for large-scale preparation of nanofiber materials are mainly divided into two categories: multi-needle electrospinning and needleless electrospinning. The disadvantages of multi-needle technology include the need for optimized design and arrangement of multiple needles to reduce mutual interference of electric fields, and the needles are prone to clogging and difficult to clean. Needleless electrospinning technologies mainly include free-surface spinning, bubble electrospinning, and rotary electrospinning. Most existing needleless electrospinning devices suffer from insufficient electric field strength and uneven electric field distribution, leading to uneven fiber thickness and difficulties in controlling the continuity and stability of the production process, ultimately affecting the performance and quality of the fiber materials. Summary of the Invention

[0004] The embodiments of this application provide a combined disc needleless electrospinning device, which can not only produce nanofiber materials on a large scale under a high-intensity uniform electric field, but also avoid the clogging of spinning components caused by rapid solidification of the spinning solution.

[0005] To achieve the above objectives, embodiments of this application provide a combined disc needleless electrospinning device, including a central disc gear and a plurality of bevel gear disc assemblies evenly distributed circumferentially on the central disc gear; the bevel gear disc assembly includes a conductive shaft and bevel gears and discs connected to the conductive shaft; the conductive shaft is connected to a high-voltage power supply; the bevel gears mesh with the central disc gear; the disc is located outside the central disc gear, and the centerline of the disc extends horizontally; a groove is formed on the outer cylindrical surface of the disc, and a baffle is provided in the groove.

[0006] Furthermore, the groove is an annular groove.

[0007] Furthermore, the annular groove is a double groove.

[0008] Furthermore, there are multiple baffles; the multiple baffles are evenly distributed in the annular groove along the circumference, and the included angle between two adjacent baffles is 30 to 60°.

[0009] Furthermore, the thickness of the baffle is 1 to 2 mm.

[0010] Furthermore, the central disc gear and bevel gear are both made of insulating material; the disc and baffle are both made of conductive material; and the conductive shaft is a hollow metal tube.

[0011] Furthermore, the diameter of the central disc gear is 200-240 mm; the diameter of the disc is 100-120 mm; the outer diameter of the conductive shaft is 14-22 mm, and the inner diameter is 10-16 mm.

[0012] Furthermore, the number of the bevel gear disk assemblies is four, five, or six.

[0013] Furthermore, the included angle between two adjacent baffles is 36°, 30°, or 60°.

[0014] Furthermore, the opening width of the groove is greater than the bottom width.

[0015] This application has the following advantages over the prior art:

[0016] 1. In this embodiment of the application, a groove is formed on a rotating disk, and a baffle is embedded in the groove. The groove can store spinning liquid and provide fiber jet endpoints, and the baffle can achieve uniformity of the spinning electric field and enhance the electric field strength.

[0017] 2. In this embodiment, the central disc gear simultaneously drives multiple discs to rotate and spin, eliminating the need to drive each disc individually, which can effectively increase the yield of nanofibers.

[0018] 3. In the embodiments of this application, multiple disks are evenly distributed around the outer periphery of the central disk gear in the circumferential direction. During the spinning process, the mutual interference of electric fields between the small disks can be reduced, and the clogging of the spinning components can be reduced.

[0019] 4. In the embodiments of this application, the baffle is made of conductive material and has a thickness of 1 to 2 mm, which can effectively improve the electric field strength of the spinning point. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of this application;

[0022] Figure 2This is a top view of Embodiment 1 of this application;

[0023] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a three-dimensional structural diagram of the disk in Embodiment 1 of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connections, detachable connections, or integral connections; those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" can explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] Example 1:

[0030] Reference Figures 1 to 4 The embodiments of this application provide a combined disc needleless electrospinning device, including a central disc gear 1 and six bevel gear disc assemblies evenly distributed circumferentially on the central disc gear 1.

[0031] The centerline of the central disc gear 1 is set vertically, and the tooth profile of the central disc gear 1 faces upward. The diameter of the central disc gear 1 is 200-240 mm, and it is made of insulating material. Using insulating material can reduce the influence on the surrounding electric field.

[0032] The bevel gear disk assembly includes a conductive shaft 2, a bevel gear 3 connected to the conductive shaft 2, and a disk 4. The conductive shaft 2 is a hollow metal tube with a length of 30–35 mm, an outer diameter of 14–22 mm, and an inner diameter of 10–16 mm. The inner end of the hollow metal tube is connected to the bevel gear 3, and the outer end is connected to a high-voltage power supply via a wire. The disk 4 is connected in the middle. The high-voltage power supply can provide the voltage required for electrospinning.

[0033] The bevel gear 3 meshes with the central disc gear 1. The bevel gear 3 is also made of insulating material to reduce its influence on the surrounding electric field.

[0034] The disk 4 is located outside the central disk gear 1 and perpendicular to the central disk gear 1. That is, the center line of the disk 4 extends in the horizontal direction, and the six circles are arranged outside the central disk gear 1. In this way, the mutual interference of electric fields between the disks 4 can be reduced during the spinning process, and the clogging of the spinning components can be reduced.

[0035] The diameter of the disk 4 is 100–120 mm. A groove 5 is formed on the outer cylindrical surface of the disk 4; the groove 5 is an annular groove and has two grooves. The width of the opening of the groove 5 is greater than the width of the bottom. A baffle 6 is provided inside the groove 5. Multiple baffles 6 are evenly distributed circumferentially within the annular groove, with an included angle of 36° between adjacent baffles 6. The thickness of the baffle 6 is 1–2 mm. Both the disk 4 and the baffles 6 are made of conductive material to increase the electric field strength.

[0036] The working process of the combined disc needleless electrospinning device in this embodiment is as follows:

[0037] The device of this embodiment is immersed in the spinning solution, causing the central disc gear 1 to start rotating, thereby driving the bevel gear 3 to rotate, which in turn drives the conductive shaft 2 to rotate, and then drives the disc 4 with the groove 5 to start rotating. After the spinning solution is evenly attached to the groove 5, an electrostatic high voltage is applied. When the critical voltage is exceeded, the fiber jet is formed from the groove 5 on the outer edge of the disc 4 and deposited on the collection plate.

[0038] Therefore, the rotation of the central disc gear 1 can simultaneously drive the rotation of six bevel gears 3, which in turn drive the rotation of six discs 4 for spinning, eliminating the need to drive each disc 4 individually. This effectively increases the yield of nanofibers and reduces clogging of the spinning components. In addition, the grooves 5 on the discs 4 can store spinning solution and provide fiber jet endpoints, making the electric field distribution more uniform. The multiple baffles 6 in the grooves 5 can homogenize the spinning electric field and increase the electric field strength at the spinning endpoints. Therefore, this combined disc needleless electrospinning device can not only produce nanofiber materials on a large scale under a high-intensity uniform electric field, but also eliminate clogging of the spinning components caused by rapid solidification of the spinning solution.

[0039] Example 2:

[0040] The only difference between Example 2 and Example 1 is that the number of bevel gear disk assemblies in Example 2 is five. The five sets of bevel gear disk assemblies are evenly distributed circumferentially on the central disk gear 1.

[0041] Example 3:

[0042] The only difference between Example 3 and Example 1 is that the number of bevel gear disk assemblies in Example 3 is four. The four sets of bevel gear disk assemblies are evenly distributed circumferentially on the central disk gear 1.

[0043] Example 4:

[0044] The only difference between Example 4 and Example 1 is that the number of baffles 6 in the groove 5 of Example 4 is different from that in Example 1. In Example 4, a baffle 6 is provided in the groove 5 every 30°.

[0045] Example 5:

[0046] The only difference between Example 5 and Example 1 is that the number of baffles 6 in the groove 5 of Example 5 is also different from that in Example 1. In Example 5, a baffle 6 is provided in the groove 5 every 60°.

[0047] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A combined disc needleless electrospinning device, characterized in that, The device includes a central disc gear and multiple bevel gear disc assemblies evenly distributed circumferentially on the central disc gear. Each bevel gear disc assembly includes a conductive shaft and bevel gears and discs connected to the conductive shaft. The conductive shaft is connected to a high-voltage power supply. The bevel gears mesh with the central disc gear. The discs are located outside the central disc gear, and the centerline of the discs extends horizontally. A groove is formed on the outer cylindrical surface of the disc, and a baffle is provided within the groove. The groove is an annular groove. There are multiple baffles. The multiple baffles are evenly distributed circumferentially within the annular groove, and the included angle between adjacent baffles is 30~60°.

2. The combined disc needleless electrospinning device according to claim 1, characterized in that, The annular groove is a double groove.

3. The combined disc needleless electrospinning device according to claim 1, characterized in that, The thickness of the baffle is 1~2 mm.

4. The combined disc needleless electrospinning device according to claim 3, characterized in that, The central disc gear and bevel gear are both made of insulating material; the disc and baffle are both made of conductive material; and the conductive shaft is a hollow metal tube.

5. The combined disc needleless electrospinning device according to claim 4, characterized in that, The diameter of the central disc gear is 200~240mm; the diameter of the disc is 100~120mm; the outer diameter of the conductive shaft is 14~22mm, and the inner diameter is 10~16mm.

6. The combined disc needleless electrospinning device according to claim 5, characterized in that, The number of bevel gear disk assemblies is four, five, or six.

7. The combined disc needleless electrospinning device according to claim 6, characterized in that, The included angle between two adjacent baffles is 36°, 30° or 60°.

8. The combined disc needleless electrospinning device according to claim 7, characterized in that, The opening width of the groove is greater than the bottom width.

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