Electrospinning device

Abstract

An electrostatic spinning device includes: a liquid storage tank for placing a spinning solution; a receiving mechanism having a hollow portion; a driving mechanism for driving the receiving mechanism to rotate; a fixing mechanism connected to the liquid storage tank; a power supply mechanism electrically connected to the receiving mechanism and the liquid storage tank so that an electrostatic field is formed between the receiving mechanism and the liquid storage tank; the axial length of the hollow portion is greater than the diameter of the liquid storage tank, and the fixing mechanism is used to support and fix the liquid storage tank in the hollow portion of the receiving mechanism. By providing a receiving mechanism, the receiving mechanism is provided with a hollow portion, the liquid storage tank is placed in the hollow portion, and the axial length of the hollow portion is greater than the diameter of the liquid storage tank, so that the prepared nanofibers are all received on the receiving mechanism and will not be scattered elsewhere to cause waste.

Description

[Technical field]

[0001] The invention relates to an electrostatic spinning device and belongs to the technical field of electrostatic spinning. [Background technology]

[0002] In recent years, with the rise of electrospinning technology, nanofibers have been widely used in clothing, energy, environment, optoelectronics, biomedicine, military and aerospace due to their high specific surface area and high porosity. However, the yield of nanofibers prepared by traditional electrospinning technology is low, and the production process of nanofibers is unstable. In addition, the area of ​​the receiving mechanism is small, so a small part of the nanofibers will not be received by the receiving mechanism, resulting in waste.

[0003] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. [Summary of the invention]

[0004] The object of the present invention is to provide an electrostatic spinning device, which can improve the spinning efficiency and make the nanofibers received on the receiving mechanism more orderly.

[0005] The object of the present invention is to achieve the following technical solution: an electrospinning device, comprising:

[0006] A liquid storage tank for placing a spinning solution;

[0007] A receiving mechanism having a hollow portion;

[0008] A driving mechanism, driving the receiving mechanism to rotate;

[0009] A fixing mechanism connected to the liquid storage tank;

[0010] a power supply mechanism, electrically connected to the receiving mechanism and the liquid storage tank, so that an electrostatic field is formed between the receiving mechanism and the liquid storage tank;

[0011] The axial length of the hollow portion is greater than the diameter of the liquid reservoir, and the fixing mechanism is used to support and fix the liquid reservoir in the hollow portion of the receiving mechanism.

[0012] In one embodiment, the receiving mechanism includes at least two receiving fixtures and a plurality of conductive metals for connecting the two receiving fixtures.

[0013] In one embodiment, a plurality of the conductive metals are arranged in parallel and equidistantly.

[0014] In one embodiment, the fixing mechanism includes a connector connected to the liquid reservoir and a support member connected to the connector, at least a portion of the connector extends into the hollow portion, and the support member is used to support the connector and the liquid reservoir.

[0015] In one embodiment, a cavity is formed in the connecting member, and the connecting member is connected to the liquid storage tank.

[0016] In one embodiment, the electrospinning mechanism further comprises a liquid supply mechanism connected to the cavity, and the liquid supply mechanism and the liquid storage tank are respectively arranged at two ends of the connecting member;

[0017] A connection point is provided between the connecting member and the supporting member, the connection point has a first distance to the liquid storage tank, the connection point has a second distance to the liquid supply mechanism, and the ratio of the first distance to the second distance is proportional to the weight ratio of the liquid supply mechanism to the liquid storage tank.

[0018] In one embodiment, the fixing mechanism only includes a connecting member, wherein the connecting member has a cavity and is connected to the liquid reservoir.

[0019] In one embodiment, the electrospinning mechanism further comprises a liquid supply mechanism connected to the cavity, the liquid supply mechanism and the liquid storage tank are respectively arranged at two ends of the connecting member, and the height of the liquid supply mechanism is greater than the height of the liquid storage tank;

[0020] The weight of the liquid supply mechanism is greater than the weight of the liquid storage tank so as to support the liquid storage tank through the connecting member.

[0021] In one embodiment, the driving mechanism is a driving motor, and the output shaft of the driving motor is connected to the receiving mechanism; or, the driving mechanism is a lead screw, and the lead screw is connected to the receiving mechanism through a gear transmission mechanism.

[0022] In one embodiment, the electrospinning device further comprises an anti-overflow mechanism, and the liquid storage tank is placed in the anti-overflow mechanism.

[0023] Compared with the prior art, the present invention has the following beneficial effects: a receiving mechanism is provided, the receiving mechanism is provided with a hollow portion, a liquid storage tank is placed in the hollow portion, and the axial length of the hollow portion is greater than the diameter of the liquid storage tank, so that the prepared nanofibers are all received on the receiving mechanism and will not fly elsewhere to cause waste.

Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the electrospinning device of the present invention. [Specific implementation method]

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention rather than all structures are shown in the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] The terms "including" and "having" and any variations thereof in the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] See also Figure 1 As shown, an electrospinning device in a preferred embodiment of the present invention includes a liquid storage tank 1 for placing a spinning solution, a fixing mechanism connected to the liquid storage tank 1, a receiving mechanism 5 for receiving the prepared nanofibers, and a power supply mechanism electrically connected to the receiving mechanism 5 and the liquid storage tank 1. The receiving mechanism 5 and the liquid storage tank 1 are both electrically connected to the power supply mechanism, and then an electrostatic field is formed between the receiving mechanism 5 and the liquid storage tank 1, so that the spinning solution is stretched into a jet under the action of the electrostatic field to form nanofibers, which is convenient and fast. In this embodiment, the receiving mechanism 5 is in the shape of a roller, and the nanofibers can be evenly received at all angles.

[0029] The receiving mechanism 5 in the prior art is generally arranged above the liquid reservoir 1 to receive the nanofibers. There is a gap between the receiving mechanism 5 and the liquid reservoir 1, so that when the nanofibers fly to the receiving mechanism 5, a small amount of nanofibers are scattered, resulting in not being received on the receiving mechanism 5, causing waste and making the spinning effect low. Therefore, the receiving mechanism 5 in the electrostatic spinning device of the present invention has a hollow part, and accordingly, the electrostatic spinning device also includes a fixing mechanism connected to the liquid reservoir 1, which is used to support and fix the liquid reservoir 1 in the hollow part of the receiving mechanism 5. In the present embodiment, the liquid reservoir 1 is arranged at the center of the axial length direction of the receiving mechanism 5, and the radial direction is arranged according to actual conditions. At the same time, the axial length of the hollow part is greater than the diameter of the liquid reservoir 1, so that the prepared nanofibers can be completely received on the receiving mechanism 5, reducing waste and improving spinning efficiency. In this embodiment, the axial length of the hollow portion is greater than the diameter of the liquid storage tank 1, and the setting is: the receiving area in the hollow portion is larger than the spinning area of ​​the liquid storage tank 1, and the movement trajectory area of ​​the formed jet is less than or equal to the receiving area to prevent waste.

[0030] Specifically, the receiving mechanism 5 includes at least two receiving fixtures 52 and a plurality of conductive metals 51 for connecting the receiving fixtures 52. The conductive metal 51 may be copper, iron, etc., which is not specifically limited here and depends on the actual situation. In the present embodiment, the conductive metal 51 is a copper wire, and a plurality of copper wires are arranged parallel and equidistantly along the axial length direction of the receiving net 52. The purpose of such arrangement is that parallel electrodes are formed between the copper wires, and the nanofibers can be received on the receiving net 52 in a more orderly manner under the action of the parallel electrodes. Among them, the number of the receiving fixtures 52 is two. Of course, in other embodiments, the number of the receiving fixtures 52 is other, which is not specifically limited here and depends on the actual situation.

[0031] The electrospinning device further includes a driving mechanism 4, which drives the receiving mechanism 5 to rotate, so that the nanofibers are uniformly received on the receiving net 52. The driving mechanism 4 can be a driving motor, or a lead screw, etc. When it is a driving motor, the output shaft of the driving motor is connected to the receiving mechanism 5; when it is a lead screw, the lead screw is connected to the receiving mechanism 5 through a gear transmission mechanism. Among them, the gear transmission mechanism is a conventional mechanism, and the present invention will not be described in detail here.

[0032] The fixing mechanism includes a connector 3 connected to the liquid reservoir 1 and a support member connected to the connector 3, at least part of the connector 3 extends into the hollow part, and the support member is used to support the connector 3 and the liquid reservoir 1. A cavity is formed in the connector 3, and the connector 3 is connected to the liquid reservoir 1. At this time, the electrospinning mechanism also includes a liquid supply mechanism 2 connected to the cavity, and the liquid supply mechanism 2 and the liquid reservoir 1 are respectively arranged at both ends of the connector 3. The liquid supply mechanism 2 can transport the spinning solution into the liquid reservoir 1 through the cavity, so that the spinning process is continuous, and the spinning efficiency and output are improved. A connection point is provided between the connector 3 and the support member, and the connection point has a first distance to the liquid reservoir 1, and the connection point has a second distance to the liquid supply mechanism 2, and the ratio of the first distance to the second distance is proportional to the weight ratio of the liquid supply mechanism 2 and the liquid reservoir 1. That is, if the ratio of the first distance to the second distance increases, the weight ratio of the liquid supply mechanism 2 and the liquid reservoir 1 also increases accordingly.

[0033] In other embodiments, the fixing mechanism only includes the connecting member 3, and no supporting member is provided. Similarly, the electrospinning device also includes a liquid supply mechanism 2, the connecting member 3 has a cavity and is connected to the liquid storage tank 1, and the liquid supply mechanism 2 and the liquid storage tank 1 are respectively arranged at both ends of the connecting member 3, and the effect is the same as above, which will not be repeated.

[0034] The electrospinning mechanism further includes a liquid supply mechanism 2 connected to the cavity, the liquid supply mechanism 2 and the liquid reservoir 1 are respectively arranged at the two ends of the connecting member 3, and the height of the liquid supply mechanism 2 is greater than the height of the liquid reservoir 1, so that the liquid supply mechanism 2 can support the liquid reservoir 1 in the hollow part, and the rotation of the receiving mechanism 5 will not interfere with the spinning of the liquid reservoir 1. In addition, the weight of the liquid supply mechanism 2 is greater than the weight of the liquid reservoir 1 so as to support the liquid reservoir 1 through the connecting member 3, and the definition of greater than is: the liquid supply mechanism 2 can stably support the liquid reservoir 1 through the connecting member 3.

[0035] The liquid supply mechanism 2 is a conventional structure, such as a combination of a liquid supply tank and a pump, or a syringe-shaped structure. The present invention does not make any specific limitations here, and it depends on the actual situation.

[0036] The electrospinning device further includes an anti-overflow mechanism 6, in which the liquid reservoir 1 is placed to collect the spinning solution overflowing from the liquid reservoir 1. It is worth noting that at this time, the anti-overflow mechanism 6 is provided with a through hole for the connector 3 to pass through, thereby facilitating the connection.

[0037] The implementation process of the electrospinning device of the present invention is as follows: the driving mechanism 3 drives the receiving mechanism 5 to rotate at a constant speed, the spinning solution in the liquid storage tank 2 is stretched into filaments under the action of the electrostatic field, and is orderly received on the receiving net 52 under the action of the parallel conductive metal 51, which is convenient and fast.

[0038] In summary: a receiving mechanism 5 is provided, which is provided with a hollow portion, a liquid storage tank 1 is placed in the hollow portion, and the axial length of the hollow portion is greater than the diameter of the liquid storage tank 1, so that the prepared nanofibers are all received on the receiving mechanism 5 and will not fly elsewhere and cause waste.

[0039] The above is only a specific implementation of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. An electrospinning device, characterized in that: include: A liquid storage tank for placing a spinning solution; A receiving mechanism having a hollow portion; A driving mechanism, driving the receiving mechanism to rotate; A fixing mechanism connected to the liquid storage tank; a power supply mechanism, electrically connected to the receiving mechanism and the liquid storage tank, so that an electrostatic field is formed between the receiving mechanism and the liquid storage tank; The axial length of the hollow portion is greater than the diameter of the liquid reservoir, and the fixing mechanism is used to support and fix the liquid reservoir in the hollow portion of the receiving mechanism; The receiving mechanism includes at least two receiving fixing members and a plurality of conductive metals for connecting the two receiving fixing members; A plurality of the conductive metals are arranged in parallel and at equal distances; The electrostatic spinning device also includes an anti-overflow mechanism, and the liquid storage tank is placed in the anti-overflow mechanism.

2. The electrospinning device according to claim 1, characterized in that The fixing mechanism includes a connecting member connected to the liquid storage tank and a supporting member connected to the connecting member, at least a portion of the connecting member extends into the hollow portion, and the supporting member is used to support the connecting member and the liquid storage tank.

3. The electrospinning device according to claim 2, characterized in that A cavity is formed in the connecting piece, and the connecting piece is communicated with the liquid storage tank.

4. The electrospinning device according to claim 3, characterized in that: The electrospinning mechanism further comprises a liquid supply mechanism connected to the cavity, wherein the liquid supply mechanism and the liquid storage tank are respectively arranged at two ends of the connecting member; A connection point is provided between the connecting member and the supporting member, the connection point has a first distance to the liquid storage tank, the connection point has a second distance to the liquid supply mechanism, and the ratio of the first distance to the second distance is proportional to the weight ratio of the liquid supply mechanism to the liquid storage tank.

5. The electrospinning device according to claim 1, characterized in that: The fixing mechanism only includes a connecting piece, which has a cavity and is communicated with the liquid storage tank.

6. The electrospinning device according to claim 5, characterized in that: The electrospinning mechanism further comprises a liquid supply mechanism connected to the cavity, wherein the liquid supply mechanism and the liquid storage tank are respectively arranged at two ends of the connecting member, and the height of the liquid supply mechanism is greater than the height of the liquid storage tank; The weight of the liquid supply mechanism is greater than the weight of the liquid storage tank so as to support the liquid storage tank through the connecting member.

7. The electrospinning device according to claim 1, characterized in that: The driving mechanism is a driving motor, and the output shaft of the driving motor is connected to the receiving mechanism; or, the driving mechanism is a lead screw, and the lead screw is connected to the receiving mechanism through a gear transmission mechanism.

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