A spinning nozzle and electrospinning device

Abstract

The application provides a spinning nozzle and an electrostatic spinning device, wherein the spinning nozzle comprises a plurality of first nozzles, a flow combining member and a second nozzle; the first nozzle comprises an inner nozzle and an outer nozzle which are coaxially arranged; the plurality of first nozzles and the flow combining member are located in the second nozzle; and an output pipe is arranged corresponding to a second outlet of the second nozzle; the inner nozzle rotates around a first axis, so that the interface action between two kinds of spinning solutions in the first nozzle is homogenized; the flow combining member combines the jets generated by the plurality of first nozzles; a functional coating material can be added to the jet generated by the output pipe of the flow combining member through the second nozzle; the second nozzle rotates around a second axis, and the airflow generated during the rotation makes the functional coating material uniformly cover on the jet, and is beneficial to further stretching and homogenization between the spinning solutions.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to, but is not limited to, the field of spinning, in particular to a spinning nozzle and an electrospinning device. BACKGROUND

[0002] The electrospinning technology can realize the jet spinning of polymer solution or melt under the action of high-voltage electrostatic field. The existing coaxial electrospinning nozzle can realize the uniform jet of two or more jets, but due to the direct jet, the different spinning liquids cannot fully cooperate, the effect of the uniformization of the interface action of different materials cannot be achieved, and the molecular chain orientation cannot be regulated. SUMMARY

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The embodiment of the present application provides a spinning nozzle and an electrospinning device.

[0005] The embodiment of the first aspect of the present application is a spinning nozzle, comprising:

[0006] A plurality of first nozzles, the first nozzle comprising a coaxially arranged inner nozzle and an outer nozzle, the inner nozzle being rotatable around a first axis, the first axis being the central axis of the inner nozzle;

[0007] A flow converging member, the flow converging member comprising an output pipe and a plurality of branch pipes, the plurality of branch pipes being connected with the output pipe, and the branch pipes being connected with the first outlets of the first nozzles;

[0008] A second nozzle, the plurality of first nozzles and the flow converging member being located in the second nozzle, the output pipe being arranged corresponding to a second outlet of the second nozzle, and the second nozzle being rotatable around a second axis, the second axis being the central axis of the second nozzle.

[0009] In some embodiments of the first aspect of the present application, the cross section of the first nozzle gradually decreases from the first inlet of the first nozzle to the first outlet of the first nozzle.

[0010] In some embodiments of the first aspect of the present application, the inner nozzle comprises an inner nozzle nozzle and an inner nozzle storage cavity, the inner nozzle nozzle being connected with the branch pipe, and the inner nozzle storage cavity being located on the side of the inner nozzle away from the branch pipe.

[0011] In some embodiments of the first aspect of the present application, the outer nozzle comprises an outer nozzle nozzle and an outer nozzle storage cavity, the outer nozzle nozzle being connected with the branch pipe, and the outer nozzle storage cavity being located on the side of the outer nozzle away from the branch pipe.

[0012] In some embodiments of the first aspect of the application, the second nozzle comprises a second nozzle nozzle and a second nozzle reservoir, the second nozzle nozzle is provided with the second outlet, and the second nozzle reservoir is located on a side of the second nozzle away from the second nozzle reservoir.

[0013] In some embodiments of the second aspect of the application, the electrospinning device comprises a power supply, a moving platform, a collection platform, and a spinning nozzle as described in the embodiments of the first aspect of the application, the collection platform is arranged on the moving platform, the spinning nozzle is located above the collection platform, the power supply is electrically connected with the spinning nozzle and the collection platform, and the spinning nozzle forms a jet under the action of an electric field.

[0014] In some embodiments of the second aspect of the application, the moving platform comprises an X-axis moving component and a Y-axis moving component, the X-axis moving component is used to drive the collection platform to move in the X-axis direction, and the Y-axis moving component is used to drive the collection platform to move in the Y-axis direction.

[0015] In some embodiments of the second aspect of the application, the electrospinning device is provided with a first voltage controller, a second voltage controller, and a third voltage controller, the first voltage controller is electrically connected with the inner nozzle of the spinning nozzle, the second voltage controller is electrically connected with the outer nozzle of the spinning nozzle, and the third voltage controller is electrically connected with the second nozzle of the spinning nozzle.

[0016] In some embodiments of the second aspect of the application, the electrospinning device is provided with a protective shell made of transparent material on the outside.

[0017] In some embodiments of the second aspect of the application, the electrospinning device further comprises a Z-axis moving component, the Z-axis moving component is used to drive the spinning nozzle to move in the Z-axis direction.

[0018] The above scheme has at least the following beneficial effects: the inner spinneret is loaded with one kind of spinning solution, the outer spinneret is loaded with another kind of spinning solution, when the first spinneret is spinning, the inner spinneret rotates around the first axis, so that the interface interaction between the two kinds of spinning solutions in the first spinneret is homogenized, and the function of regulating the molecular chain orientation can be played; the flow converging piece converges the jet flow generated by the plurality of first spinnerets, the jet flow of the plurality of first spinnerets is combined and sprayed at the nozzle of the output pipe of the flow converging piece due to viscoelasticity; the second spinneret is also loaded with spinning solution, since the plurality of first spinnerets and the flow converging piece are located in the second spinneret, the output pipe is arranged corresponding to the second outlet of the second spinneret, through the second spinneret, a layer of functional coating material can be added to the jet flow generated by the output pipe of the flow converging piece, the second spinneret rotates around the second axis, and the airflow generated during rotation makes the functional coating material uniformly cover on the jet flow, and is beneficial to further stretching and interface interaction homogenization between the spinning solutions. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application.

[0020] Figure 1 is a structure diagram of the spinning spinneret provided by the embodiment of the present application;

[0021] Figure 2 is a structure diagram of the first spinneret and the flow converging piece;

[0022] Figure 3 is a structure diagram of the second spinneret;

[0023] Figure 4 is a structure diagram of the electrospinning device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and do not limit the present application.

[0025] It should be noted that although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a manner different from the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification, claims or above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0026] The embodiments of the present application are further described below in combination with the drawings.

[0027] Embodiments of the present application provide a spinning nozzle 1.

[0028] With reference to Figures 1 to 3 , the spinning nozzle 1 comprises a plurality of first nozzles 2, a flow converging member 10 and a second nozzle 3.

[0029] The first nozzle 2 comprises an inner nozzle 4 and an outer nozzle 5 arranged coaxially, the inner nozzle 4 is rotatable around a first axis, the first axis being the central axis of the inner nozzle 4; the flow converging member 10 comprises an output pipe and a plurality of branch pipes, the plurality of branch pipes are connected with the output pipe, the branch pipes are connected with the first outlet 9 of the first nozzle 2; the plurality of first nozzles 2 and the flow converging member 10 are located in the second nozzle 3, the output pipe is arranged corresponding to the second outlet 14 of the second nozzle 3, the second nozzle 3 is rotatable around a second axis, the second axis being the central axis of the second nozzle 3.

[0030] In this embodiment, the inner nozzle 4 is loaded with a spinning solution, the outer nozzle 5 is loaded with another spinning solution, when the first nozzle 2 is spinning, the inner nozzle 4 rotates around the first axis, so that the interface action between the two spinning solutions in the first nozzle 2 is homogenized, and can play a role in regulating the orientation of molecular chains; the flow converging member 10 converges the jets generated by the plurality of first nozzles 2, the jets of the plurality of first nozzles 2 are combined and sprayed at the pipe opening of the output pipe of the flow converging member 10 due to viscoelasticity; the second nozzle 3 is also loaded with a spinning solution, since the plurality of first nozzles 2 and the flow converging member 10 are located in the second nozzle 3, the output pipe is arranged corresponding to the second outlet of the second nozzle 3, through the second nozzle 3, a layer of functional coating material can be added to the jet generated by the output pipe of the flow converging member 10, the second nozzle 3 rotates around the second axis, the airflow generated by the rotation makes the functional coating evenly cover on the jet, and is conducive to further stretching and interface action homogenization between the spinning solutions.

[0031] It can be understood that the spinning solution can be a liquid material, or a particulate material.

[0032] The rotation direction of the inner nozzle 4 can be clockwise rotation, or counterclockwise rotation. The second nozzle 3 can be clockwise rotation, or counterclockwise rotation.

[0033] With reference to Figure 2 , in some embodiments of the present application, the cross section of the first nozzle 2 gradually decreases from the first inlet of the first nozzle 2 to the first outlet of the first nozzle 2, which is conducive to the formation of the jet.

[0034] In some embodiments of the present application, the inner nozzle 4 comprises an inner nozzle nozzle and an inner nozzle storage cavity, the inner nozzle nozzle is connected with the branch pipe, and the inner nozzle storage cavity is located on the side of the inner nozzle 4 away from the branch pipe. The spinning solution is loaded through the inner nozzle storage cavity, and the spinning solution is sprayed through the inner nozzle nozzle.

[0035] In some embodiments of the present application, the outer nozzle 5 comprises an outer nozzle nozzle and an outer nozzle reservoir, the outer nozzle nozzle is connected with the branch pipe, and the outer nozzle reservoir is located on the side of the outer nozzle 5 away from the branch pipe. The spinning solution is loaded through the outer nozzle reservoir and sprayed through the outer nozzle nozzle.

[0036] The inner nozzle nozzle and the outer nozzle nozzle jointly constitute the nozzle 7 of the first nozzle, and the inner nozzle reservoir and the outer nozzle reservoir jointly constitute the reservoir 6 of the first nozzle.

[0037] The spinning solution enters the inner nozzle reservoir and the outer nozzle reservoir from the first inlet 8 of the first nozzle and exits the inner nozzle nozzle and the outer nozzle nozzle from the first outlet 9 of the first nozzle.

[0038] Referring to Figure 3 , in some embodiments of the present application, the second nozzle 3 comprises a second nozzle nozzle 13 and a second nozzle reservoir 11, the second nozzle nozzle 13 is provided with a second outlet, and the second nozzle reservoir 11 is located on the side of the second nozzle 3 away from the second nozzle reservoir 11. The spinning solution is loaded through the second inlet 12 of the second nozzle into the second nozzle reservoir 11, and is sprayed through the second nozzle nozzle 13 from the second outlet 14 of the second nozzle.

[0039] Another embodiment of the present application provides an electrospinning device.

[0040] Referring to Figure 4 , the electrospinning device comprises a power supply 16, a moving platform 18, a collection platform 17 and a spinning nozzle 1 as above, the collection platform 17 is arranged on the moving platform 18, the spinning nozzle 1 is located above the collection platform 17, the power supply 16 is electrically connected with the spinning nozzle 1 and the collection platform 17, and the spinning nozzle 1 forms a jet under the action of an electric field.

[0041] In this embodiment, the positive and negative poles of the power supply 16 are respectively electrically connected with the spinning nozzle 1 and the collection platform 17 to form a spinning pulling electric field. The size of the printed spinning three-dimensional structure can be controlled by changing the voltage of the electric field. The deformation sizes of the fibers formed under different voltages are different.

[0042] In some embodiments of the present application, the electrospinning device is provided with a first voltage controller, a second voltage controller and a third voltage controller, the first voltage controller is electrically connected with the inner nozzle 4 of the spinning nozzle 1, and a plurality of inner nozzles 4 are independently controlled by the first voltage controller; the second voltage controller is electrically connected with the outer nozzle 5 of the spinning nozzle 1, and a plurality of outer nozzles 5 are independently controlled by the second voltage controller; and the third voltage controller is electrically connected with the second nozzle 3 of the spinning nozzle 1.

[0043] In some embodiments of the present application, the motion platform 18 comprises an X-axis motion component 20 for driving the collection platform 17 to move in the X-axis direction and a Y-axis motion component 21 for driving the collection platform 17 to move in the Y-axis direction. By means of the X-axis motion component 20 and the Y-axis motion component 21, the movement of the collection platform 17 in the horizontal plane can be controlled.

[0044] In some embodiments of the present application, the electrospinning device further comprises a Z-axis motion component 22 for driving the spinning nozzle 1 to move in the Z-axis direction. By means of the Z-axis motion component 22, the movement of the electrospinning device in the vertical direction can be controlled.

[0045] By means of the cooperation of the X-axis motion component 20, the Y-axis motion component 21 and the Z-axis motion component 22, a spinning three-dimensional structure of various shapes can be formed.

[0046] In some embodiments of the present application, a protective shell 19 made of transparent material is arranged outside the electrospinning device. The protective shell 19 serves to protect the internal components, and the transparent protective shell 19 facilitates the user to observe the working condition of the internal electrospinning device.

[0047] The shape and size of the printing structure are designed according to the requirements of printing. The required spinning solution is filled into the inner nozzle 4 of the first nozzle 2, the outer nozzle 5 of the first nozzle 2 and the second nozzle 3, and the nozzle assembly and the collection platform 17 are moved to the starting position. The nozzle assembly and the collection platform 17 are powered by the power supply 16, so that a high-voltage electrostatic field is formed between the nozzle assembly and the collection platform 17. The inner nozzle 4 and the second nozzle 3 are controlled to rotate at a preset speed and direction, respectively. The spinning solution of each first nozzle 2 is homogenized under the action of the interface; when the electric field strength is higher than the critical value, the spinning solution overcomes its own viscoelasticity and surface tension to form a jet, which is sprayed from the inner nozzle 4 and the outer nozzle 5. The jets sprayed from the plurality of first nozzles 2 converge through the converging member 10; the jets sprayed from the converging member 10 and the second nozzle 3 are coaxially sprayed, and the plurality of fiber materials are further stretched by the self-rotation of the second nozzle 3. At the same time, the collection platform 17 moves in the X-Y direction according to the set path to collect the spinning, and after printing a layer, the spinning nozzle 1 moves in the Z direction to complete the printing of the next layer, finally realizing the printing of three-dimensional fiber materials with multifunctionality and orientation.

[0048] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A spinning nozzle, characterized in that, include: Multiple first nozzles, each first nozzle including an inner nozzle and an outer nozzle arranged coaxially, wherein the inner nozzle is rotatable about a first axis, the first axis being the central axis of the inner nozzle; A manifold, comprising an output pipe and multiple branch pipes, wherein the multiple branch pipes are connected to the output pipe and the branch pipes are connected to the first outlet of the first nozzle; The second nozzle contains multiple first nozzles and a manifold located inside it. The output pipe is configured to correspond to the second outlet of the second nozzle. The second nozzle is rotatable around a second axis, which is the central axis of the second nozzle. The inner nozzle includes an inner nozzle nozzle and an inner nozzle storage chamber. The inner nozzle nozzle is connected to the branch pipe, and the inner nozzle storage chamber is located on the side of the inner nozzle away from the branch pipe. The external nozzle includes an external nozzle nozzle and an external nozzle storage chamber. The external nozzle nozzle is connected to the branch pipe, and the external nozzle storage chamber is located on the side of the external nozzle away from the branch pipe. The second nozzle includes a second nozzle nozzle and a second nozzle storage chamber. The second nozzle nozzle has a second outlet, and the second nozzle storage chamber is located on the side of the second nozzle away from the second nozzle storage chamber.

2. A spinning nozzle according to claim 1, characterized in that, The cross-section of the first nozzle gradually decreases from the first inlet of the first nozzle towards the first outlet of the first nozzle.

3. An electrospinning apparatus, characterized in that, The device includes a power supply, a motion platform, a collection platform, and a spinning nozzle as described in any one of claims 1 to 2. The collection platform is disposed on the motion platform, the spinning nozzle is located above the collection platform, the power supply is electrically connected to the spinning nozzle and the collection platform, and the spinning nozzle forms a jet under the action of an electric field.

4. The electrospinning apparatus according to claim 3, characterized in that, The motion platform includes an X-axis motion component and a Y-axis motion component. The X-axis motion component is used to drive the collection platform to move in the X-axis direction, and the Y-axis motion component is used to drive the collection platform to move in the Y-axis direction.

5. The electrospinning apparatus according to claim 3, characterized in that, The electrospinning device is equipped with a first voltage controller, a second voltage controller and a third voltage controller. The first voltage controller is electrically connected to the inner nozzle of the spinning nozzle, the second voltage controller is electrically connected to the outer nozzle of the spinning nozzle, and the third voltage controller is electrically connected to the second nozzle of the spinning nozzle.

6. The electrospinning apparatus according to claim 3, characterized in that, The electrospinning device is provided with a protective shell made of transparent material on the outside.

7. The electrospinning apparatus according to claim 4, characterized in that, The electrospinning device further includes a Z-axis motion component, which is connected to the spinning nozzle. The Z-axis motion component is used to drive the spinning nozzle to move in the Z-axis direction.

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