Electrostatic spinning device with needles distributed in lotus root shape

Abstract

The utility model discloses an electrostatic spinning device with needle heads distributed in a lotus root shape, which comprises a spinning mechanism, a connecting piece and a liquid supply injector, and the spinning mechanism comprises a spinning needle head, a supporting piece and a restraining jet piece; one end of the connecting piece is connected with the liquid supply injector, the other end of the connecting piece is connected with the supporting piece, the supporting piece is in a lotus root shape, the spinneret needles are located in the supporting piece and distributed in a lotus root shape, and the distance between every two adjacent spinneret needles is 6-8 cm; the liquid inlet end of the spinneret needle is connected with the liquid supply injector, the liquid outlet end of the spinneret needle is arranged on the restraining jet piece in a sleeving mode, and the restraining jet piece is fixedly connected to the supporting piece. By improving the spinning mechanism and designing the lotus-root-shaped supporting piece, the multiple spinning needle heads are distributed along with the supporting piece in a lotus-root-shaped mode, the distance between the needle heads and the jet flow restraining piece act in a synergistic mode to jointly improve the electric field effect, the problem that jet flows caused by the multiple spinning needle heads are mutually staggered is solved, and the spinning effect is improved. Therefore, the spinning efficiency is influenced and the stability is improved.

Description

Technical Field

[0001] This utility model relates to electrospinning technology, and more particularly to an electrospinning device with needles arranged in a lotus root shape. Background Technology

[0002] Electrospinning technology is gradually maturing, and nanofibers prepared by electrospinning have excellent mechanical strength, high porosity, high specific surface area and nanoscale effect, showing great potential in tissue engineering, pharmaceuticals, wound dressings and other fields.

[0003] However, traditional electrospinning technology produces nanofibers with low yields and unstable processes. Single-needle electrospinning can only extrude solution from one needle to form fibers at a time, with hourly output typically ranging from milligrams to grams, which cannot meet the demands of large-scale industrial production. Therefore, researchers have improved spinning efficiency and increased yield by modifying the needle device and the electric field.

[0004] Since the invention of electrospinning technology, only a few applications have been industrialized and scaled up. The difficulty lies in the edge effect phenomenon of multi-needle electrospinning technology, one of the technologies for large-scale electrospun film preparation. That is, when multiple needles are arranged in a straight line, the spinning jets from the needles on both sides of the needle row are deflected to the sides. In severe cases, the formed nanofibers cannot be received by the receiving device, resulting in waste of raw materials and costs. At the same time, the needles in the middle are not easy to form a spinning jet, resulting in low spinning efficiency and difficulty in achieving the expected goals. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an electrospinning device with needles arranged in a lotus root shape, which solves the problem of filament drift caused by jet instability, thereby improving spinning efficiency.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An electrospinning device with needles arranged in a lotus root shape includes a spinning mechanism, a connector, and a liquid supply injector. The spinning mechanism includes spinning needles, a support, and a jet-constraining component.

[0008] One end of the connector is connected to the liquid supply injector, and the other end of the connector is connected to the support member. The support member is lotus root shaped, and there are multiple spinnerets. The spinnerets are located inside the support member and are distributed in a lotus root shape. The spacing between the spinnerets is 6-8 cm. The liquid inlet end of the spinneret is connected to the liquid supply injector, and the liquid outlet end of the spinneret is sleeved on the constrained jet member. The constrained jet member is fixedly connected to the support member.

[0009] Preferably, the connector is a spiral structure.

[0010] Preferably, the constrained jet component is a metal disk.

[0011] Preferably, the connector is a spiral structure with an internal helix.

[0012] Preferably, the spinneret, support, and jet-constraining component are all made of conductive metal.

[0013] Preferably, the conductive metal is one of silver, copper, iron, and aluminum.

[0014] Preferably, the size of the metal disc is the same as the opening of the lotus root-shaped support.

[0015] This utility model has the following advantages and beneficial effects compared to the prior art:

[0016] This invention improves the spinning mechanism by designing a lotus root-shaped support, which allows multiple spinning needles to be distributed in a lotus root shape along with the support. The spacing between the needles and the constrained jet component work together to improve the electric field effect, prevent the jets from intersecting between multiple spinning needles, thereby affecting spinning efficiency and improving stability. Attached Figure Description

[0017] Figure 1 This utility model relates to an electrospinning device with needles arranged in a lotus root shape.

[0018] Figure 2 This is the spinneret mechanism of this utility model.

[0019] The markings of the components in the attached diagram:

[0020] 1-Spinning mechanism, 2-Support component, 3-Connector, 4-Constraint jet component, 5-Spinning needle, 6-Liquid supply syringe. Detailed Implementation

[0021] The invention objective of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation of this utility model is not limited to the following embodiments.

[0022] Example 1

[0023] An electrospinning device with needles arranged in a lotus root shape includes a spinning mechanism 1, a connector 3, and a liquid supply injector 6. The spinning mechanism 1 includes a support 2, spinning needles 5, and a jet-constraining component 4.

[0024] The connector 3 has an internal spiral structure. One end of the connector 3 is fixedly connected to the liquid supply injector 6, and the other end is fixedly connected to the support 2. The support 2 is lotus root shaped, and the spinneret 5 is located inside the support 2. The spinnerets 5 are distributed in a lotus root shape along with the support 2, and there are multiple spinnerets 5 with a spacing of 6 cm between them. The liquid inlet end of the spinneret 5 passes through the hollow connector 3 and connects to the liquid supply injector 6. The liquid outlet side of the spinneret 5 is fitted onto the confining jet component 4, which is a metal disk. The size of the metal disk is the same as the opening of the lotus root shaped support 2. The spinnerets 5, the support 2, and the confining jet component 4 are all made of copper.

[0025] Instructions for use: Connect the positive electrode to connector 3 and the negative electrode to the receiving device of the electrospinning device, so that the device and the receiving device form an electrostatic field. The lotus root-like distribution of the constrained jet component 4 and the spinneret 5, as well as the spacing between the spinneret 5, are used to constrain the jet of the outermost spinning needle to achieve a stable spinning jet.

Claims

1. An electrospinning device with needles arranged in a lotus root shape, characterized in that, It includes a spinneret mechanism (1), a connector (3) and a liquid supply injector (6), wherein the spinneret mechanism (1) includes a spinneret needle (5), a support (2) and a jet confinement component (4); One end of the connector (3) is connected to the liquid supply syringe (6), and the other end of the connector (3) is connected to the support (2). The support (2) is lotus root shaped. There are multiple spinnerets (5). The spinnerets (5) are located inside the support (2) and are distributed in a lotus root shape. The spacing between the spinnerets (5) is 6-8 cm. The liquid inlet end of the spinneret (5) is connected to the liquid supply syringe (6), and the liquid outlet end of the spinneret (5) is sleeved on the constrained jet member (4). The constrained jet member (4) is fixedly connected to the support (2).

2. The electrospinning device with needles arranged in a lotus root shape according to claim 1, characterized in that, The connector (3) has a spiral structure.

3. The electrospinning device with needles arranged in a lotus root shape according to claim 1, characterized in that, The constrained jet component (4) is a metal disk.

4. The electrospinning device with needles arranged in a lotus root shape according to claim 2, characterized in that, The connector (3) has an internal spiral structure.

5. The electrospinning device with needles arranged in a lotus root shape according to claim 1, characterized in that, The spinneret (5), support (2) and constrained jet (4) are all made of conductive metal.

6. The electrospinning device with needles arranged in a lotus root shape according to claim 5, characterized in that, The conductive metal is one of silver, copper, iron, and aluminum.

7. The electrospinning device with needles arranged in a lotus root shape according to claim 3, characterized in that, The size of the metal disc is the same as the opening of the lotus root-shaped support (2).

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