Cross jet spinning device

Abstract

The invention discloses a cross jet spinning device, and relates to the technical field of electrostatic spinning, the cross jet spinning device comprises a plurality of groups of spinning mechanisms, each group of spinning mechanism comprises a plurality of spinning units arranged towards the same fiber receiver, each spinning unit comprises two spinning parts, and each spinning part comprises a spinning channel; the liquid inlet and the spinning nozzle are communicated with the spinning channel, and the power supply assembly is connected with the spinning part and used for supplying electric charges to a spinning solution in the spinning channel so that the spinning nozzle can spray spinning jet flow outwards; under the condition that the distances between the adjacent spinning nozzles are the same, due to the fact that the distances between the spinning jet flows sprayed out of the adjacent spinning nozzles in the same spinning unit are gradually increased in the direction from the liquid inlet to the spinning nozzles, the fringe effect is reduced, and the spinning effect is improved. The problems that in the prior art, due to the edge effect of a plurality of spinning heads, spinning jet flow sprayed out of a middle spinning piece is small, and the spinning yield and quality are low are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrospinning, in particular to a cross jet flow spinning device. BACKGROUND

[0002] Electrospinning refers to that under the action of an electric field, charges are generated on the surface of a spinning solution, and the droplet is changed from a spherical shape to a conical shape (Taylor cone) under the joint action of electric field force and surface tension. If the voltage is continuously increased, the charged conical droplet overcomes the surface tension and gradually elongates and thins, and breaks through the top of the cone to shoot towards the collection device. In the process of shooting towards the collection device, the solvent volatilizes, the fiber solidifies and is continuously stretched by the electric field force, forming a small fiber with a diameter in the nanometer level. However, according to the electric field superposition principle, Coulomb repulsion will occur between multiple spinning needles, which will result in the phenomenon that the middle field strength is low and the field strength on both sides is high, and then the number of spinning jets generated by the middle spinning needle is less, and then the yield and quality of the formed fiber are reduced.

[0003] Therefore, how to reduce the edge effect and then improve the yield and quality of electrospinning has become a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0004] The purpose of the present application is to provide a cross jet flow spinning device to reduce the edge effect and improve the yield and quality of electrospinning.

[0005] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0006] The present application provides a cross jet flow spinning device, which comprises:

[0007] A plurality of groups of spinning mechanisms, each group of spinning mechanisms comprising a plurality of spinning units arranged towards the same fiber receiver, the spinning unit comprising two spinning pieces, the spinning piece comprising a spinning channel for storing a spinning solution, and a liquid inlet and a spinning port in communication with the spinning channel, the liquid inlet being used for injecting the spinning solution, and the spinning port being used for ejecting a spinning jet, the distance between adjacent spinning jets in the same spinning unit gradually increasing from the liquid inlet to the spinning port;

[0008] A power supply assembly connected with the spinning piece, used for supplying charges to the spinning solution in the spinning channel, so that the spinning port ejects the spinning jet outward.

[0009] Preferably, the spinning ports in the same spinning mechanism are arranged in the same row or the same column, and the liquid inlets in the same spinning mechanism are arranged staggered;

[0010] And / or, adjacent spinning channels in the same spinning unit are independently arranged.

[0011] And / or, the distance between adjacent spinning jets in adjacent spinning units gradually increases from the liquid inlet to the spinning orifice.

[0012] Preferably, the spinning mechanism comprises at least two rows or two columns of spinning units;

[0013] And / or, the diameter of the spinning orifice is 0.1-5.0 mm, and the distance between adjacent spinning orifices is 0.5-20 mm;

[0014] And / or, the spinning orifice is provided with a spinning needle, and the distance between the tip of the spinning needle and the spinning orifice is 0-50 mm.

[0015] Preferably, the cross-jet spinning device further comprises a spinning head, and the spinning head has a mounting area for mounting the spinning mechanism.

[0016] Preferably, the length of the spinning head is 10-500 mm, and / or the width of the spinning head is 0.5-50 mm, and / or the height of the spinning head is 10-50 mm;

[0017] And / or, the turning part of the spinning head is provided with a circular arc transition area;

[0018] And / or, the first side of the spinning head is provided with a plurality of inlets respectively communicating with corresponding liquid inlets, and the second side of the spinning head is provided with a plurality of outlets respectively communicating with corresponding spinning orifices, and the area of the first side of the spinning head is smaller than the area of the second side of the spinning head.

[0019] And / or, the spinning head is a curved surface structure or a planar structure.

[0020] Preferably, a single-component spinning solution or a multi-component spinning solution is fed into the spinning channel; or, the spinning solutions fed into the spinning channels in the same spinning mechanism are the same, and the spinning solutions fed into the spinning channels in different groups of spinning mechanisms are different.

[0021] Preferably, the power supply assembly comprises a power supply.

[0022] When the spinning member is a conductive spinning member, the power supply is electrically connected to the spinning member; or, when the spinning member is an insulating spinning member, the power supply is in communication with corresponding spinning channels through a plurality of conductive members.

[0023] And / or, the power supply is arranged close to the spinning members in the edge area of the same spinning mechanism, or the power supply is arranged close to the spinning members in the middle area of the same spinning mechanism.

[0024] Preferably, the cross jet spinning device further comprises a liquid feeding assembly, the liquid feeding assembly comprising a spinning solution supply source, the spinning solution supply source being in communication with the corresponding jetting channel through several passages;

[0025] Preferably, the spinning solution supply source is arranged close to the spinning member in the edge region of the same spinning mechanism, or the spinning solution supply source is arranged close to the spinning member in the middle region of the same spinning mechanism.

[0026] Preferably, the cross jet spinning device further comprises a vibrator, the vibrator being connected to the spinning member and used to drive the spinning member to vibrate.

[0027] Preferably, the included angle between the adjacent spinning jets is a, and 0 < a ≤ 90°.

[0028] The present application has the following technical effects relative to the prior art:

[0029] The cross jet spinning device comprises several groups of spinning mechanisms, each group of spinning mechanisms comprising several spinning units arranged towards the same fiber receiver, the spinning unit comprising two spinning members, the spinning member comprising a jetting channel for storing spinning solution, and a liquid inlet and a jetting port in communication with the jetting channel, a power supply assembly connected to the spinning member for supplying charges to the spinning solution in the jetting channel to make the jetting port jet out spinning jets; wherein, in the case that the distance between adjacent jetting ports is the same, the distance between the adjacent spinning jets jetted out by the adjacent jetting ports in the same spinning unit gradually increases from the liquid inlet towards the jetting port, which expands the distance between the adjacent spinning jets, reduces the coulomb force received by the spinning jets, and in turn reduces the edge effect, so that the number of spinning jets jetted out by the spinning members in the middle region and the outer edge region is relatively close, reducing the problem in the prior art that the spinning jets jetted out by the middle spinning members are less due to the edge effect, and the spinning yield and quality are both low. In short, the cross jet spinning device effectively weakens the edge effect and improves the yield and quality of electrospinning. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Fig. 1 The spinning head is a planar solid structure, and the structure schematic diagram when a group of spinning mechanisms is provided;

[0032] Fig. 2 The structure schematic diagram of the spinning head as a plane solid structure, provided with two groups of spinning mechanism;

[0033] Fig. 3 The structure schematic diagram of the spinning head as a curved surface solid structure, provided with one group of spinning mechanism;

[0034] Fig. 4 The structure schematic diagram of the spinning head as a curved surface solid structure, provided with two groups of spinning mechanism;

[0035] Wherein, 1, jet channel; 2, liquid inlet; 3, jet port; 4, spinning jet; 5, spinning head. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0038] As shown in the drawings, Figs. 1-4 The present application discloses a cross jet spinning device, the cross jet spinning device comprises a plurality of groups of spinning mechanism, each group of spinning mechanism comprises a plurality of spinning units arranged towards a same fiber receiver, the spinning unit comprises two spinning pieces, the spinning piece comprises a jet channel 1 for storing spinning solution, and a liquid inlet 2 and a jet port 3 in communication with the jet channel 1, a power supply assembly is connected with the spinning piece, used for supplying charges to the spinning solution in the jet channel 1, so that the jet port 3 sprays the spinning jet 4 outward; wherein, in the case that the distance between adjacent jet ports 3 is the same, because the distance between the spinning jets 4 sprayed by the adjacent jet ports 3 in the same spinning unit in the present application gradually increases from the liquid inlet 2 to the jet port 3, which expands the distance between the adjacent spinning jets 4, reduces the coulomb force suffered by the spinning jet 4, and then reduces the edge effect, so that the number of spinning jets 4 that can be sprayed by the spinning pieces in the middle region and the outer edge region is relatively close, reducing the problem that the spinning yield and quality are both low due to the edge effect (End effect) phenomenon of the plurality of spinning heads 5 in the prior art. In short, the cross jet spinning device in the present application effectively weakens the edge effect, and improves the yield and quality of electrospinning.

[0039] The cross flow refers to that the distance between adjacent spinning flows 4 in the same spinning unit gradually increases from the liquid inlet 2 to the spinning port 3, which makes the adjacent spinning flows 4 not arranged in parallel but cross, that is, the cross flow is formed. The fiber receiver can be a receiving electrode, a receiving base cloth or a dynamic fiber receiving device. The spinning units of each group of spinning mechanisms are arranged towards the same spinning receiver, which enables the single spinning receiver to receive multiple spinning flows of the spinning mechanism while the spinning flows 4 are formed. When the spinning members in the spinning mechanism are uniformly arranged in a set direction, such as the width direction of the device, the spinning flows 4 can also be uniformly distributed on the spinning receiver, thereby ensuring the uniformity of the fiber structure. The specific shape and material of the spinning member are not limited, as long as the spinning member has the above-mentioned spinning channel 1, liquid inlet 2, spinning port 3, and the distance between the adjacent spinning flows 4 in the same spinning unit gradually increases from the liquid inlet 2 to the spinning port 3.

[0040] The spinning members in the same group of spinning mechanisms have various arrangement forms, as long as the adjacent spinning members in the same spinning unit can spray cross spinning flows 4; for example, Figs. 1-4 as shown in the cross flow spinning device shown in Figs. 1-2 The cross flow spinning device shown in Figs. 3-4 has two groups of spinning mechanisms, and the spinning mechanism includes a plurality of spinning members. The spinning ports 3 of the spinning members in each group of spinning mechanisms are located in the same row, and the liquid inlets 2 in the same spinning unit are arranged in a staggered manner (front and back in the figure), which enables the spinning flows 4 sprayed by the spinning ports 3 to be collected by a single spinning receiver. Alternatively, if the cost is not considered, the liquid inlets 2 in the same spinning mechanism can be arranged in the same row, and the spinning ports 3 in the same spinning unit can be arranged in a staggered manner (for example, one in front of the other), at this time, although the cross spinning flows 4 can be formed, the distance between the adjacent spinning flows 4 in the same spinning unit is large, and multiple fiber receivers need to be arranged to collect the fibers.

[0041] And / or, the adjacent spinning channels 1 in the same spinning unit are independently arranged, that is, the two spinning channels 1 in the same spinning unit are not connected, which means that the charge can be supplied to the spinning solution in the corresponding spinning channel 1, avoiding the problem that the adjacent spinning channels 1 in the same spinning unit are connected, the charge is concentrated at the edge position of the spinning channel 1, the edge effect is intensified, and the spinning yield and quality are reduced.

[0042] Further, the distance between adjacent spinning jets 4 in adjacent spinning units gradually increases from the liquid inlet 2 to the spinning nozzle 3 (for example, if the spinning jets 4 of the two spinning units from left to right are v-shaped, by adjusting the position of the liquid inlet 2 of the third spinning unit from left, it is equivalent to rotating the third spinning jet 4 from left to right, and then the third spinning jet 4 from left can form a cross spinning jet 4 with the second spinning jet 4 from left, that is, the distance between the two gradually increases from the liquid inlet 2 to the spinning nozzle 3), in other words, the distance between any two adjacent spinning jets 4 in the same spinning mechanism gradually increases from the liquid inlet 2 to the spinning nozzle 3, which increases the distance between more spinning jets 4, further reduces the edge effect, and improves the spinning yield and quality.

[0043] In the present application, the cross spinning jet 4 device includes several groups, that is, at least one group of spinning mechanisms. The spinning units in the same group of spinning mechanisms can be uniformly distributed or dispersed as needed. When there is only one group of spinning mechanisms, the same type of spinning solution can be fed into the spinning channels 1 of different spinning units. At this time, single-component nanofiber materials or multi-component polymer laminated composite nanofiber materials are obtained, and after thermal / chemical bonding, single-component composite nanofiber non-woven materials can be obtained; or, the same or different two-component spinning solutions are fed into the spinning channels 1 of different spinning units in one group of spinning mechanisms to form composite nanofiber materials (fibers formed by at least two materials), or different single-component spinning solutions are fed into the spinning channels 1 of different spinning units in the same spinning mechanism, such as different spinning units in the same spinning unit, to form composite nanofiber materials or multi-component polymer laminated composite nanofiber materials; after thermal / chemical bonding, multi-component (such as two-component) composite nanofiber non-woven materials can be obtained. When the cross spinning jet 4 device includes at least two groups of spinning mechanisms, multiple rows or columns can be arranged, and the same type of single-component or multi-component spinning solution can be fed into the spinning channels 1 of the spinning units in the same group of spinning mechanisms, while different groups of spinning mechanisms feed different spinning solutions, thereby forming multi-component composite nanofiber non-woven materials. Among them, the number of spinning units and spinning mechanisms required can be set according to the working conditions to meet the nanofiber material production capacity demand.

[0044] The diameter of the spinning orifice 3 is 0.1-5.0 mm, which ensures that the nanometer spinning jet 4 is sprayed out of the spinning orifice 3, at the same time, to a certain extent, increases the diameter of the spinning orifice 3, reduces the plugging probability of the spinning orifice 3, and improves the structural uniformity and yield of the nanometer fiber yield. The distance between the adjacent spinning orifices 3 in the same row and the distance between the adjacent rows of spinning orifices 3 are both 0.5-20 mm, which greatly increases the distance between the adjacent spinning jets 4 without expanding the volume of the spinning head 5 and other installed spinning equipment, reduces the coulomb force received by the spinning jet 4, weakens the edge effect, and improves the yield and structural uniformity of the nanometer fiber material. The spatial included angle between the center lines (the axis when the spinning channel 1 is in a cylindrical shape) of the adjacent spinning channels 1 of the same spinning unit is a, 0

[0045] As shown in Figs. 1-4 , the cross spinning jet 4 device also includes a spinning head 5, and the spinning head 5 is provided with a plurality of mounting areas for mounting spinning parts (the mounting area is the area on the spinning head 5 for placing and mounting the spinning parts), and the spinning parts can be fixed on the spinning head 5 by means of bolts or glue bonding or welding, etc. The spinning parts integrate a plurality of spinning parts together, avoid the disorder caused by the centralized arrangement of a plurality of spinning parts, and reduce the occupied space. The spinning head 5 can be a spinning plate or a spinning box, as shown in Figs. 1-4 , the spinning head 5 is a spinning box, the length of the spinning head 5 is 10-500 mm, and / or the width of the spinning head 5 is 0.5-50 mm, and / or the height of the spinning head 5 is 10-50 mm, which matches the diameter of the spinning orifice 3, so that the cross jet spinning device limits the volume of the spinning head 5 while forming the cross spinning jet 4, so that the volume of the spinning head 5 will not be too large.

[0046] Furthermore, as shown in Figs. 1-4As shown, the spinning head 5 is a spinning box, the plane surrounded by four endpoints A, D, D', A' and another plane surrounded by four endpoints B, C, C', B' in the figure are respectively the left and right end faces of the spinning head 5, and the transition area of the spinning head 5 is provided with a circular arc transition area, that is, a chamfer, and the chamfer radius can be 1.0-3.0 mm, which reduces the sharp change of the shape of the corner of the spinning head 5. According to Gauss theorem and tip effect, this can improve the electric field strength at the spinneret hole, reduce the concentration of electric charge at the edge, weaken the edge effect, and improve the yield and structural uniformity of nanofiber materials.

[0047] The cross-sectional geometry of the spinning head 5 includes but is not limited to rectangle, circle, trapezoid, triangle, and the material of the spinning head 5 can be metal or non-metal; the orientation of the spinneret 3 can be set according to the working condition, such as downward or upward, and the spinning head 5 has various structural forms, such as Figs. 1-2 As shown, the spinning head 5 is a planar solid structure, that is, the surface is planar, such as Figs. 3-4 As shown, the spinning head 5 is a curved solid structure, that is, at least one outer surface is curved, and in Fig. 1 the spinning head 5 and Fig. 3 in the case of the same horizontal projection length of the spinning head 5 and Figs. 3-4 the curved solid structure has a longer installation distance, and in the case of the same number of spinning elements, the adjacent spinnerets 3 in the spinning unit, that is, the adjacent spinning jets 4, can have a larger spacing, which further weakens the edge effect and improves the yield and quality of nanofiber materials. When the spinning mechanism is in a planar solid structure or a curved solid structure, the spinning mechanism can be formed by splicing a plurality of spinning units through clamping or bolt connection, or the spinning mechanism can be integrally provided with a plurality of spinning units on the spinning head 5.

[0048] As shown in Figs. 1-4 the spinning head 5 is a spinning box, the first side, such as the lower surface, of the spinning head 5 is provided with a plurality of inlets respectively communicating with the corresponding liquid inlets 2, and the second side, such as the upper surface, of the spinning head 5 is provided with a plurality of outlets communicating with the corresponding spinnerets 3, and the area of the first side is smaller than that of the second side, which makes the spacing between adjacent spinning jets in the same spinning unit become larger and larger during the spinning process, reduces the coulomb repulsion between adjacent spinning jets in the same spinning unit, improves the electric field strength at the spinneret 3, increases the number of spinning jets 4 generated by the spinneret 3, and improves the yield of nanofiber. The first side and the second side can also be the left and right sides or other opposite sides; or, if the working condition allows, it can also be set as adjacent sides.

[0049] The cross-flow spinning device comprises a vibrator connected to the spinning member for driving the spinning member to vibrate, and in turn driving the spinning solution in the spinning channel 1 to shake, forcing the spinning solution surface to continuously carry out molecular thermal motion, reducing the solidification of the spinning solution surface, and the phenomenon of clogging the spinning hole, and further improving the production of nanofiber material. The vibrator can be an ultrasonic oscillator or other structure that can apply a first force to the spinning solution in the liquid storage cavity. The ultrasonic oscillator can directly apply high-frequency low-amplitude vibration to the spinning solution, stimulate the high polymer in the spinning solution to move violently, generate heat by friction, effectively prevent the spinning solution surface from solidifying, and assist in triggering more spinning jets 4, thereby improving the efficiency of electrospinning and the production of nanofiber. The power supply of the ultrasonic oscillator can be a commercial AC power supply or other power supply that can supply the required power to the ultrasonic oscillator. The vibrator can be arranged at the lower part of the spinning member or the spinning head 5, or a waterproof insulation structure can be added inside the spinning member or the spinning head 5. The ultrasonic vibrator and the ultrasonic oscillator mentioned above are prior art, and their specific structures will not be described here.

[0050] The power supply assembly comprises a power supply which is in communication with the corresponding spinning channel 1 through a plurality of conductive members. For example, the power supply can be directly in communication with the spinning solution in the spinning channel 1 through conductive wires, or a metal structure or other conductive body can be arranged in the spinning channel 1, and the conductive wires are in communication with the conductive body to supply the electric charge output by the power supply to the spinning solution in the spinning channel 1. When the same power supply is in communication with the spinning solutions in a plurality of spinning channels 1 through a plurality of wires, the power supply is arranged close to the spinning members in the edge region of the same spinning mechanism (when the spinning members are arranged on the spinning head 5, power supply interfaces can be arranged at both ends of the spinning head 5 to connect the power supply to the spinning solutions in the spinning channels 1), or the power supply is arranged close to the spinning members in the middle region of the same spinning mechanism (when the spinning members are arranged on the spinning head 5, a power supply interface can be arranged in the middle region of the spinning head 5 to connect the power supply to the spinning solutions in the spinning channels 1). When the power supply is arranged in the middle region of the spinning head 5 or close to the spinning members in the middle region of the same spinning mechanism, the electric charge diffuses from the middle to both sides, and compared with the arrangement of the power supply at the end or edge region of the spinning head 5 or the spinning members, the spinning members in the middle region can receive more electric charge and have a stronger electric field, which further weakens the edge effect and improves the production and quality of nanofiber. Alternatively, a power supply assembly can be provided for each spinning channel 1, which allows the spinning solution in each spinning channel 1 to receive electric charge separately, making the electric field strength of the spinning solution in the spinning channel 1 more uniform and reducing the edge effect.

[0051] The power supply component supplies the spinning solution in the spinning channel 1 with an electric charge or an electric field intensity high enough to excite the spinning solution to form the spinning jet 4. The power supply can be a DC power supply, an AC power supply, a combination of DC and AC power supply, or a pulse power supply. When the spinning member is an electrically conductive spinning member, the power supply is electrically connected to the spinning channel of the spinning member; or when the spinning member is an insulating spinning member, the power supply is connected to the corresponding spinning channel through a plurality of conductive members. The geometry, material type, height relative to the spinning solution, number, and arrangement density of the conductive members can be adjusted as needed to provide sufficient electrostatic force to the spinning solution to generate a Taylor cone and the spinning jet 4, and then form the fiber.

[0052] The spinning device further comprises a liquid feeding component, which comprises a spinning solution supply source including a tank storing the spinning solution and a delivery pump arranged on a pipeline and connected to the tank and the pipeline. The spinning solution supply source is connected to the corresponding spinning channel 1 through a plurality of channels. When the spinning solution supply source in the same liquid feeding component supplies the spinning solution to a plurality of spinning channels 1, the spinning solution supply source is arranged close to the spinning members in the edge region of the same spinning mechanism (when the spinning members are arranged on the spinning head 5, the spinning solution supply source can be connected to both ends of the spinning head 5 through a pipeline, and the pipeline and the spinning channel 1 can be connected through the internal pipeline in the spinning head 5), or the spinning solution supply source is arranged close to the spinning members in the middle region of the same spinning mechanism (when the spinning members are arranged on the spinning head 5, the spinning solution supply source can be connected to the central region of the spinning head 5 through a pipeline, and the pipeline and the spinning channel 1 can be connected through the internal pipeline in the spinning head 5). Alternatively, an independent liquid feeding component can be provided for each spinning channel 1, and the spinning solution supply source of the liquid feeding component is connected to the spinning channel 1, so that the spinning solution can be uniformly distributed in the spinning channel 1.

[0053] The specific structure of the liquid supply component, the power supply component, and the vibrator in the present application is the prior art, and will not be described in detail. In this document, a plurality of refers to at least one. In this document, and / or refers to the content located in front and / or behind, which can exist simultaneously or separately. For example, X and / or Y includes only X or Y, and X and Y exist simultaneously. The present application discloses multiple technical solutions, but there is no opposite technical inspiration.

[0054] On the basis of the present application, those skilled in the art can change the size and specification of the components involved in the present application, use the multi-spinning head combination described in the present application to realize large-scale / industrialized nanofiber preparation, use auxiliary electrodes to improve the electric field intensity, and use auxiliary airflow to stretch the spinning jet, all of which are within the scope of protection of the present application.

[0055] The present application is applicable to the prior art.

[0056] The principles and implementation manners of the present application are described by using specific examples. The above examples are only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In summary, the content of the present description should not be understood as a limitation of the present application.

Claims

1. A cross jet spinning device, characterized in that: The cross jet spinning device comprises: A plurality of groups of spinning mechanisms, each group of spinning mechanisms comprising a plurality of spinning units disposed toward the same fiber receiver, the spinning units comprising two spinning elements, the spinning elements comprising a spinneret, and a liquid inlet and a spinneret in communication with the spinneret, the liquid inlet being used for injecting a spinning solution, the spinneret being used for ejecting a spinning jet, the distance between adjacent spinning jets in the same spinning unit gradually increasing from the liquid inlet toward the spinneret; A power supply component is connected to the spinning element and is used for supplying electric charge to the spinning solution in the spinning channel so that the spinning nozzle ejects a spinning jet outward.

2. The cross jet spinning device according to claim 1, characterized in that The spinnerets in the same spinning mechanism are arranged in the same row or column, and the liquid inlets in the same spinning mechanism are staggered; And / or, the adjacent spinning channels in the same spinning unit are independently arranged; And / or, the distance between adjacent spinning jets in adjacent spinning units gradually increases from the liquid inlet toward the spinneret.

3. The cross jet spinning device according to claim 1, characterized in that The spinning mechanism comprises at least two rows or columns of spinning units; and / or, the diameter of the spinneret is 0.1 to 5.0 mm, and the distance between adjacent spinnerets is 0.5 to 20 mm; And / or, the spinneret is provided with a spinning needle, and the distance between the top of the spinning needle and the spinneret is 0 to 50 mm.

4. The cross jet spinning device according to claim 1, characterized in that The cross jet spinning device further comprises a spinning head having an installation area for installing the spinning mechanism.

5. The cross jet spinning device according to claim 4, characterized in that The length of the spinning head is 10 to 500 mm, and / or the width of the spinning head is 0.5 to 50 mm, and / or the height of the spinning head is 10 to 50 mm; And / or, a circular arc transition zone is provided at the turning point of the spinning head; And / or, a first side of the spinning head is provided with a plurality of inlets respectively connected to the corresponding liquid inlets, a second side of the spinning head is provided with a plurality of outlets respectively connected to the corresponding spinnerets, and an area of ​​the first side of the spinning head is smaller than an area of ​​the second side of the spinning head; And / or, the spinning head is a curved three-dimensional structure or a flat three-dimensional structure.

6. The cross jet spinning device according to claim 1, characterized in that A single-component spinning solution or a multi-component spinning solution is fed into the spinneret; alternatively, the spinning solutions fed into the spinnerets in the same spinning mechanism are the same, while the spinning solutions fed into the spinnerets in different groups are different.

7. The cross jet spinning device according to claim 1, characterized in that The power supply assembly includes a power supply; Wherein, when the spinning element is a conductive spinning element, the power supply is electrically connected to the spinning element; or, when the spinning element is an insulating spinning element, the power supply is connected to the corresponding spinning channels through a plurality of conductive elements. And / or, the power source is arranged close to the spinning element in the edge area of ​​the same spinning mechanism, or the power source is arranged close to the spinning element in the middle area of ​​the same spinning mechanism.

8. The cross jet spinning device according to claim 1, characterized in that The cross jet spinning device further comprises a liquid feeding assembly, wherein the liquid feeding assembly comprises a spinning solution supply source, and the spinning solution supply source is connected to the corresponding spinneret channels through a plurality of channels; The spinning solution supply source is arranged close to the spinning element in the edge area of ​​the same spinning mechanism, or the spinning solution supply source is arranged close to the spinning element in the middle area of ​​the same spinning mechanism.

9. The cross jet spinning device according to claim 1, characterized in that The cross jet spinning device further comprises a vibrator, which is connected to the spinning element and is used to drive the spinning element to vibrate.

10. The cross jet spinning device according to any one of claims 1 to 9, characterized in that The spatial angle between adjacent spinning jets is ɑ, 0<ɑ≤90°.

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