CN212426257U

CN212426257U - Electrostatic spinning device

Info

Publication number: CN212426257U
Application number: CN202021220457.0U
Authority: CN
Inventors: 谷子琦; 胡冰清; 姚昊; 马晓曼; 阙亦云
Original assignee: Maitong Medical Technology Jiaxing Co ltd
Current assignee: Zhejiang Maitong Intelligent Manufacturing Technology Group Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-01-29
Anticipated expiration: 2030-06-28

Abstract

The utility model provides an electrostatic spinning device, it includes: the device comprises a liquid supply device, a spinning spray head, a spinning collecting device, a power supply device and a translation driving device; the spinning nozzle comprises a plurality of needle assemblies which are arranged along a first direction, the plurality of needle assemblies are connected with a translation driving device, and the translation driving device is used for driving the needle assemblies to do translation motion along a second direction which forms an angle with the first direction; the liquid supply device is connected with the needle assembly and is used for supplying spinning liquid to the needle assembly; the spinning collecting device comprises a receiving plate positioned above the spinning nozzle, the receiving plate is parallel to the first direction and/or the second direction, the negative pole of the power supply device is electrically connected with the receiving plate, and the positive pole of the power supply device is electrically connected with the spinning nozzle. So the configuration, through the setting of translation drive arrangement, make the syringe needle subassembly can make translational motion along the second direction, make the spinning solution can distribute along the second direction uniformly, improved the homogeneity of electrostatic spinning membrane on the one hand, on the other hand has enlarged the coverage of spinning solution.

Description

Electrostatic spinning device

Technical Field

The utility model relates to the field of medical appliance manufacturing technology and method, in particular to an electrostatic spinning device.

Background

The electrostatic spinning technology shows a wide application prospect in biomedicine, filter materials, energy materials and other aspects. Continuous mass production of electrospun membranes has been a difficult problem. The existing solution methods comprise multi-needle electrostatic spinning, needle-free electrostatic spinning and the like. Among them, the needleless electrospinning solves the problem of mass production, but due to the needleless property thereof, the liquid supply amount is unstable, thereby causing the problems of non-uniformity of the thickness of the electrospun membrane, the diameter of the fiber, and the like. The existing multi-needle electrostatic spinning has good stability but relatively low efficiency, and in addition, the existing electrostatic spinning film mostly adopts a needle cylinder type to extrude spinning liquid, and the roller receives the spinning liquid only one sheet at a time, so that the spinning film needs to be unpicked and washed, and the solution needs to be replaced after being spun, and continuous mass production cannot be realized, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electrostatic spinning device to solve the lower or poor problem of product quality of current electrostatic spinning device production efficiency.

In order to solve the above technical problem, the utility model provides an electrostatic spinning device, it includes: the device comprises a liquid supply device, a spinning spray head, a spinning collecting device, a power supply device and a translation driving device;

the spinning nozzle comprises a plurality of needle assemblies which are arranged along a first direction, the plurality of needle assemblies are connected with the translation driving device, and the translation driving device is used for driving the needle assemblies to do translation motion along a second direction which forms an angle with the first direction;

the liquid supply device is connected with the needle assembly and is used for supplying spinning liquid to the needle assembly;

the spinning collecting device comprises a receiving plate positioned above the spinning nozzle, the receiving plate is parallel to the first direction and/or the second direction, the negative electrode of the power supply device is electrically connected with the receiving plate, and the positive electrode of the power supply device is electrically connected with the spinning nozzle.

Optionally, the needle assembly comprises: a needle, an inner tube and an outer tube;

one end of the inner tube is connected with the liquid supply device, the other end of the inner tube is connected with the needle head, and the needle head faces the receiving plate;

the inner pipe is provided with a through first cavity, the needle head is provided with a through second cavity, and the first cavity, the second cavity and the liquid supply device are communicated with each other and are used for forming a spinning liquid channel;

the outer pipe sleeve is arranged outside the inner pipe, a third cavity is arranged between the outer pipe and the inner pipe, and an opening is formed in one end, facing the needle, of the third cavity.

Optionally, the needle is detachably connected with the inner tube; and/or the outer pipe is detachably sleeved outside the inner pipe.

Optionally, the needle is in threaded connection with the inner tube; and/or the outer pipe is in threaded connection with the inner pipe.

Optionally, the liquid supply device comprises: a liquid storage chamber, a liquid supply pipe and a liquid supply pump;

the liquid storage chamber is used for containing spinning liquid;

one end of the liquid supply pump is connected with the liquid storage chamber, and the other end of the liquid supply pump is connected with the needle head assembly through the liquid supply pipe and is used for providing spinning liquid for the needle head assembly.

Optionally, the spinning collecting device further comprises a first winding assembly and a second winding assembly arranged at two ends of the receiving plate, and the first winding assembly and the second winding assembly are used for driving the spinning carriers to move in a translational manner along the first direction.

Optionally, the translation driving device includes a fixing plate and a driving assembly;

the fixed plate is connected with the driving assembly;

the driving assembly is configured to drive the fixing plate to make translational motion;

the fixing plate is provided with a plurality of fixing holes, the needle head assembly is connected with the fixing plate through the fixing holes, and the fixing plate is electrically connected with the anode of the power supply device.

Optionally, the electrostatic spinning device includes at least two spinning nozzles, the at least two spinning nozzles are arranged along the second direction, and a needle assembly of each spinning nozzle is connected to the translation driving device.

Optionally, the distance between the spinning nozzle and the receiving plate is adjustable.

Optionally, the electrostatic spinning device further includes: a housing and an air conditioning device;

the spinning receiving device and the spinning nozzle are arranged in the shell;

the air conditioning device comprises an exhaust assembly and/or a temperature and humidity adjusting assembly arranged on the shell.

Optionally, the electrostatic spinning device further includes: a control device and a display device;

the control device is respectively in communication connection with the liquid supply device, the power supply device, the translation driving device, the display device and the air conditioning device; the control device is used for adjusting the liquid supply speed of the liquid supply device, adjusting the voltage of the power supply device, adjusting the driving speed of the translation driving device and adjusting the running speed of the air conditioning device according to input parameters;

the display device is used for displaying the liquid supply speed of the liquid supply device, the voltage of the power supply device, the driving speed of the translation driving device and the running speed of the air conditioning device.

To sum up, the utility model provides an electrostatic spinning device includes: the device comprises a liquid supply device, a spinning spray head, a spinning collecting device, a power supply device and a translation driving device; the spinning nozzle comprises a plurality of needle assemblies which are arranged along a first direction, the plurality of needle assemblies are connected with the translation driving device, and the translation driving device is used for driving the needle assemblies to do translation motion along a second direction which forms an angle with the first direction; the liquid supply device is connected with the needle assembly and is used for supplying spinning liquid to the needle assembly; the spinning collecting device comprises a receiving plate positioned above the spinning nozzle, the negative pole of the power supply device is electrically connected with the receiving plate, and the positive pole of the power supply device is electrically connected with the spinning nozzle. So the configuration, through translation drive arrangement's setting, make the syringe needle subassembly can make translational motion along the second direction, make the spinning solution distribute along the second direction uniformly, improved the homogeneity of electrostatic spinning membrane on the one hand, improved the quality of product, on the other hand because the syringe needle subassembly makes translational motion along the second direction, has enlarged the coverage of spinning solution, has improved production efficiency. Continuous production of electrospun membranes is thereby possible.

Drawings

Those skilled in the art will appreciate that the drawings are provided for a better understanding of the invention and do not constitute any limitation on the scope of the invention. Wherein:

fig. 1 is a schematic view of an electrospinning apparatus according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a needle assembly taken along an axial cross-section in accordance with an embodiment of the present invention.

In the drawings:

01-a spinning carrier;

10-a liquid supply device; 11-a liquid storage chamber; 12-a supply tube; 13-liquid supply pump; 20-a spinning collection device; 21-a receiving plate; 22-a first winding assembly; 23-a second winding assembly; 30-a spinning nozzle; 31-a needle assembly; 311-needle head; 312-an inner tube; 313-an outer tube; 40-a power supply device; 50-a housing; 60-a control device; 61-an exhaust assembly; 70-a translation drive; 71-fixing plate.

Detailed Description

To make the objects, advantages and features of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in simplified form and are not to scale, but rather are provided for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a", "an" and "the" are generally employed in a sense including "at least one", the terms "at least two" and "two or more" are generally employed in a sense including "two or more", and moreover, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or imply that there is a number of technical features being indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or at least two of the features. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in the present application, the disposition of an element with another element generally only means that there is a connection, coupling, fit, or drive relationship between the two elements, and the connection, coupling, fit, or drive between the two elements may be direct or indirect through intermediate elements, and is not to be understood as indicating or implying any spatial relationship between the two elements, i.e., an element may be in any orientation within, outside, above, below, or to one side of another element unless the content clearly dictates otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The core idea of the utility model is to provide an electrostatic spinning device to solve the problem that the production efficiency of the existing electrostatic spinning device is lower or the product quality is poor. The following description refers to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides an electrostatic spinning apparatus, including: the spinning machine comprises a liquid supply device 10, a spinning collecting device 20, a spinning nozzle 30, a power supply device 40 and a translation driving device 70; the spinning nozzle 30 comprises a plurality of needle assemblies 31 arranged along a first direction, the plurality of needle assemblies 31 are connected with the translation driving device 70, and the translation driving device 70 is used for driving the needle assemblies 31 to do translation motion along a second direction which forms an angle with the first direction; the liquid supply device 10 is connected with the needle assembly 31 and is used for supplying spinning liquid to the needle assembly 31; the spinning collecting device 20 includes a receiving plate 21 located above the spinning nozzle 30, a negative electrode of the power supply device 40 is electrically connected to the receiving plate 21, and a positive electrode of the power supply device 40 is electrically connected to the spinning nozzle 30. The first direction and the second direction are preferably both arranged in a horizontal direction, with an angle between them. More preferably, the first direction is perpendicular to the second direction. In the embodiment shown in fig. 1, the first direction is the left-right direction in the figure, and the second direction is the lower-left-upper-right direction in the figure. Optionally, the receiving plate 21 is disposed toward the spinning nozzle 30, and is parallel to the first direction and the second direction, or at least parallel to one of the first direction and the second direction, so that the electric field distribution between the receiving plate 21 and the spinning nozzle 30 is relatively uniform, and the spinning solution can be relatively uniformly sprayed onto the receiving plate 21.

Generally, the production of the electrostatic spinning film needs to be attached to the spinning carrier 01, such as a receiving paper, and the spinning carrier 01 is disposed on the side of the receiving plate 21 facing the spinning nozzle 30 along a direction parallel to the receiving plate 21. The needle unit 31 is connected to the positive electrode of the power supply unit 40, and the receiving plate 21 is connected to the negative electrode of the power supply unit 40, so that the spinning solution discharged from the needle unit 31 is positively charged, and the spinning solution moves toward the receiving plate 21 and is received by the spinning carrier 01 under the action of the electric field. Since the plurality of needle assemblies 31 are arranged in the first direction, the sprayed spinning solutions can be overlapped on the spinning carrier 01 in the first direction, and the plurality of needle assemblies 31 are driven by the translation driving device 70 to perform the translation motion in the second direction, so that the sprayed spinning solutions can be overlapped on the spinning carrier 01 in the second direction, thereby forming a uniform electrospun film. Further, the spinning carrier 01 can obtain an electrostatic spinning film with a desired thickness at a suitable moving speed. It should be understood that the moving speed of the spinning carrier 01 is generally slow, and the voltage of the power supply device 40 is generally high, and those skilled in the art can set the moving speed of the spinning carrier 01 and the voltage of the power supply device 40 according to the prior art, and will not be described in detail herein. In one embodiment, the receiving plate 21 is a smooth metal plate disposed above the spin carrier 01.

In an exemplary embodiment, the electrospinning apparatus further comprises: a housing 50 and an air conditioning module; the receiving plate 21 and the spinning nozzle 30 are arranged in the housing 50; the air conditioning module comprises an air exhaust assembly 61 and/or a temperature and humidity sensing assembly (not shown) arranged on the shell 50, and the shell 50 is utilized to wrap main production components of the electrostatic spinning membrane so that the main production components are approximately positioned in a closed space, so that on one hand, the production conditions (such as temperature, humidity and the like) of the electrostatic spinning membrane can be adjusted, and on the other hand, the electrostatic spinning membrane can be prevented from being polluted by external dust, bacteria and the like. The air exhaust assembly 61 is disposed at the top of the housing 50 to facilitate the discharge of the organic solvent volatilized from the spinning solution during the spinning process. In addition, because the spinning solution is continuously input, the temperature and the humidity inside the shell 50 generally rise, and the exhaust assembly 61 can adjust the temperature and the humidity inside the shell 50 through outward exhaust, so that the stability of the spinning process is ensured. In some embodiments, the temperature and humidity sensing assembly includes a temperature sensor and a humidity sensor, which can detect the temperature and humidity inside the casing 50, and the exhaust assembly 61 operates at a proper speed according to the temperature and humidity detected by the temperature and humidity sensing assembly, so as to maintain the temperature and humidity inside the casing 50 within a desired temperature and humidity range.

Preferably, the liquid supply device 10 comprises: a liquid storage chamber 11, a liquid supply pipe 12 and a liquid supply pump 13; the liquid storage chamber 11 is used for containing spinning liquid; one end of the liquid supply pump 13 is connected with the liquid storage chamber 11 and is used for extracting spinning liquid from the liquid storage chamber 11; the other end of the liquid supply pump 13 is connected to the needle assembly 31 through the liquid supply tube 12, and is used for supplying the spinning solution to the needle assembly 31. Preferably, the liquid supply pump 13 can continuously and quantitatively supply the spinning solution to the needle assembly 31.

The liquid supply pump 13 can draw the spinning solution from the liquid storage chamber 11 and supply it uniformly to each needle assembly 31 of the spinning nozzle 30. Preferably, the liquid supply device 10 is an open pumping system, the liquid storage chamber 11 is an airtight tank with an air inlet, and the liquid supply pump 13 draws the spinning solution from the liquid storage chamber 11 and simultaneously the air pressure in the liquid storage chamber 11 is kept balanced through the air inlet. Optionally, the liquid supply pipe is made of PTFE.

It should be understood that, since the speed of the spinning solution discharged from the spinning nozzle 30 is slow, the liquid supply speed of the liquid supply device 10 is actually at a low speed, such as on the order of several milliliters to several tens of milliliters per hour. It is difficult for a general fluid pump to ensure a constant supply of the spinning solution even at such a low flow rate. Therefore, a push pumping system is often used in the prior art, which is similar to a syringe and provides a low-speed and quantitative supply of the spinning solution by slowly pushing the syringe rod, but has the defect of non-continuity. The inventors have found that spin finish pumps can meet continuous and fixed micro-pumping requirements. The spinning oil pump is characterized in that after liquid is sucked, the spinning oil pump can uniformly pump the liquid to a liquid outlet, and the liquid supply speed can be accurately controlled according to different rotating speeds. The method replaces the traditional mode of pushing the spinning solution by a pushing type pumping system, can realize accurate and quantitative supply of the spinning solution to the spinning nozzle 30 and continuous operation, thereby realizing the continuous production of the electrostatic spinning film.

Preferably, the translation driving device 70 includes a fixing plate 71 and a driving assembly (not shown); the fixed plate 71 is connected with the driving assembly; the driving assembly is configured to drive the fixing plate 71 to perform translational motion along a second direction; the fixing plate 71 has a plurality of fixing holes arranged along a first direction, the needle assemblies 31 are connected with the fixing plate 71 through the fixing holes, each fixing hole is used for connecting one needle assembly 31, and the fixing plate 71 is electrically connected with the positive pole of the power supply device 40. The driving assembly includes a gear transmission assembly or a belt transmission assembly, and may further include a driving member such as a servo motor, and those skilled in the art can appropriately configure the driving assembly according to the prior art.

In other embodiments, the electrospinning apparatus includes at least two spinning nozzles 30, the at least two spinning nozzles 30 are arranged along the second direction, and the needle assembly 31 of each spinning nozzle 30 is connected to the translation driving apparatus 70. By arranging the at least two spinning nozzles 30 in the second direction, the coverage of the spinning carrier 01 in the width direction can be increased, and the production efficiency of the electrostatic spinning film can be further improved. It should be noted that at least two of the spinning nozzles 30 arranged along the second direction may be the same or different, and may be set by those skilled in the art according to the actual situation.

Preferably, the distance between the spinning nozzle 30 and the receiving plate 21 is adjustable. In an alternative embodiment, the translation drive 70 is fixedly connected to a spindle nut which is in threaded connection with a rotatable spindle which is in drive connection with a servomotor, and the arrangement is such that the rotation of the servomotor drives the spindle in rotation, so that the translation drive 70 is driven in the direction of extension of the spindle. Alternatively, the extension direction of the screw is perpendicular to the first direction and the second direction, so that the translation driving device 70 can move in the direction perpendicular to the receiving plate 21. The spinning nozzle 30 is disposed on the translation driving device 70, and moves along with the up-and-down movement of the translation driving device 70, so that the adjustment of the distance between the spinning nozzle 30 and the receiving plate 21 is realized. The adjustment of the distance between the spinning nozzle 30 and the receiving plate 21 can be adapted to different spinning requirements. It is understood that the skilled person can also drive and adjust the distance between the spinneret 30 and the receiving plate 21 by means of a gear transmission assembly or a belt transmission assembly, etc. driven by a servo motor, and will not be described herein.

Further, please refer to fig. 2, which is a cross-sectional view of the needle assembly 31 along the axial cross-section according to an embodiment of the present invention. The needle assembly 31 includes: needle 311, inner tube 312 and outer tube 313; one end of the inner tube 312 is connected to the liquid supply device 10, the other end is connected to the needle 311, and the needle 311 faces the receiving plate 21; the inner tube 312 has a first through cavity, the needle 311 has a second through cavity, and the first through cavity, the second through cavity and the liquid supply device 10 are communicated with each other to form a spinning solution channel; the outer tube 313 is sleeved outside the inner tube 312, a third cavity is arranged between the outer tube 313 and the inner tube 312, and an opening is arranged at one end of the third cavity facing the needle 311. In some embodiments, the needle 311 is removably coupled to the inner tube 312 to facilitate removal of the needle 311 for maintenance or cleaning. In other embodiments, the outer tube 313 may be detachably sleeved on the outer portion of the inner tube 312, so as to facilitate the detachment of the outer tube 313 for maintenance or cleaning.

Preferably, the needle 311 is connected with the inner tube 312 in a threaded manner; and/or the outer tube 313 is threadedly connected to the inner tube 312. In an alternative embodiment, the needle 311 is tapered, and has an inner portion that extends axially therethrough, a tip facing the receiving plate 21, and a needle hole of the tip preferably being a circular hole having an aperture of between 0.1mm and 2 mm. The conical bottom end of the needle 311 has a first external thread. The inner tube 312 is a cylindrical tube penetrating in the axial direction, and is disposed toward the receiving plate 21, and one end facing the receiving plate 21 has a first internal thread adapted to the first external thread, and the needle 311 is in threaded connection with the inner tube 312 through the first internal thread and the first external thread. The needle 311 is screwed into the inner tube 312 and connected to the inner tube 312, so that the first cavity is communicated with the second cavity inside the needle 311. Optionally, the outer tube 313 penetrates axially, the outer tube 313 includes a first section and a second section connected to each other, the first section is substantially conical, the inner shape of the first section is adapted to the outer shape of the needle 311, and the tip of the first section is also a round hole and adapted to the diameter of the needle hole of the needle 311; the second section is substantially cylindrical. The outer tube 313 is disposed outside the inner tube 312 and is fixedly connected to the inner tube 312. The outer tube 313 preferably has a fixing member, such as a fixing hole disposed at an end of the second section away from the first section, through which a bolt can be inserted for fixing with the fixing plate 71 or the housing 50. Preferably, the outer tube 313 is sleeved outside the inner tube 312, and a third cavity is formed between the outer tube and the inner tube 312. With such a configuration, when there are redundant droplets of the spinning solution at the tip of the needle 311, the redundant droplets can fall back to the third cavity between the outer tube 313 and the inner tube 312, thereby preventing defects from being generated in the spinning film.

Preferably, the inner pipe 312 has a second external thread, the outer pipe 313 has a second internal thread matching with the second external thread, and the inner pipe 312 and the outer pipe 313 are connected by the second internal thread and the second external thread. In one embodiment, a second external thread is provided at an end of inner tube 312 distal from receiving plate 21, and a second internal thread is provided at an end of a second section of outer tube 313 distal from receiving plate 21. The needle 311, the inner tube 312 and the outer tube 313 are respectively in threaded connection, so that each component is convenient to disassemble, replace, maintain or clean, the relative connection among the components is reliable and sealed, and the passage of the spinning solution is ensured.

Preferably, the collecting device 20 further comprises a first winding assembly 22 and a second winding assembly 23 disposed at two ends of the receiving plate, and the first winding assembly 22 and the second winding assembly 23 are used for driving the spinning carrier 01 to move in the first direction in a translational manner. In one embodiment, the spinning medium 01 is wound around the first winding member 22 in a winding shape before being unwound and translated in the first direction, and is wound around the second winding member 23 after receiving the spinning solution to form an electrospun film. The first winding assembly 22 and the second winding assembly 23 can be driven by the driving member to rotate, so as to drive the spinning carrier 01 to make translational motion along the first direction.

Optionally, the electrospinning device further comprises a control device 60 and a display device (not shown), wherein the control device is respectively connected in communication with the liquid supply device 10, the power supply device 40, the translation driving device 70, the display device and the air conditioning device; the control device 60 is used for adjusting the liquid supply speed of the liquid supply device 10, adjusting the voltage of the power supply device 40, adjusting the driving speed of the translation driving device 70 and adjusting the running speed of the air conditioning device according to the input parameters; the display device is used for displaying the liquid supply speed of the liquid supply device 10, the voltage of the power supply device 40, the driving speed of the translation driving device 70 and the running speed of the air conditioning device. The control device 60 is used for detecting and adjusting parameters such as the liquid supply speed of the liquid supply pump 13, the voltage of the power supply device 40, the temperature and humidity inside the shell 50, the air exhaust speed of the air exhaust assembly 61, the moving speed of the translation driving device 70 and the like in real time respectively, and driving each component to carry out corresponding adjustment, so that each parameter meets the production requirement of the electrostatic spinning film. Preferably, the control device 60 is also in communication with the first winding assembly 22 and the second winding assembly 23 and adjusts the moving speed of the spinning carrier 01 according to the inputted parameters. The parameters input here may be preset in the control device 60 or may be input in real time via an input unit communicatively connected to the control device. The input parameters can be set by a person skilled in the art according to the prior art. The display device may be a display device commonly used in the art, such as an LCD display, and may be configured according to the prior art by those skilled in the art, and is not expanded here.

To sum up, the utility model provides an electrostatic spinning device includes: the device comprises a liquid supply device, a spinning spray head, a spinning collecting device, a power supply device and a translation driving device; the spinning nozzle comprises a plurality of needle assemblies which are arranged along a first direction, the plurality of needle assemblies are connected with the translation driving device, and the translation driving device is used for driving the needle assemblies to do translation motion along a second direction which forms an angle with the first direction; the liquid supply device is connected with the needle assembly and is used for supplying spinning liquid to the needle assembly; the spinning collecting device comprises a receiving plate positioned above the spinning nozzle, the receiving plate is parallel to the first direction and/or the second direction, the negative electrode of the power supply device is electrically connected with the receiving plate, and the positive electrode of the power supply device is electrically connected with the spinning nozzle. So the configuration, through translation drive arrangement's setting, make the syringe needle subassembly can make translational motion along the second direction, make the spinning solution distribute along the second direction uniformly, improved the homogeneity of electrostatic spinning membrane on the one hand, improved the quality of product, on the other hand because the syringe needle subassembly makes translational motion along the second direction, has enlarged the coverage of spinning solution, has improved production efficiency. Continuous production of electrospun membranes is thereby possible.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. An electrospinning apparatus, comprising: the device comprises a liquid supply device, a spinning spray head, a spinning collecting device, a power supply device and a translation driving device;

2. The electrospinning apparatus of claim 1, wherein the needle assembly comprises: a needle, an inner tube and an outer tube;

3. The electrospinning apparatus of claim 2, wherein the needle is removably connected to the inner tube; and/or the outer pipe is detachably sleeved outside the inner pipe.

4. The electrospinning apparatus of claim 2, wherein the needle is threadedly connected to the inner tube; and/or the outer pipe is in threaded connection with the inner pipe.

5. The electrospinning apparatus of claim 1, wherein the liquid supply device comprises: a liquid storage chamber, a liquid supply pipe and a liquid supply pump;

the liquid storage chamber is used for containing spinning liquid;

6. The electrospinning apparatus of claim 1, wherein the spin collector further comprises a first winding assembly and a second winding assembly disposed at opposite ends of the receiving plate, the first winding assembly and the second winding assembly configured to drive the spinning carrier in a translational motion along the first direction.

7. The electrospinning apparatus of claim 1, wherein the translational drive device comprises a fixed plate and a drive assembly;

the fixed plate is connected with the driving assembly;

the driving assembly is configured to drive the fixing plate to move in a translational motion along the second direction;

the fixing plate is provided with a plurality of fixing holes arranged along the first direction, the needle head assembly is connected with the fixing plate through the fixing holes, and the fixing plate is electrically connected with the anode of the power supply device.

8. The electrospinning apparatus of claim 1, wherein the electrospinning apparatus comprises at least two spinning nozzles, at least two spinning nozzles are arranged along the second direction, and the needle assembly of each spinning nozzle is connected to the translation driving device.

9. The electrospinning apparatus of claim 1, wherein the distance between the spinning nozzle and the receiving plate is adjustable.

10. The electrospinning apparatus of claim 1, further comprising: a housing and an air conditioning device;

the receiving plate and the spinning nozzle are arranged in the shell;

the air conditioning device comprises an exhaust assembly and/or a temperature and humidity sensing assembly arranged on the shell.

11. The electrospinning apparatus of claim 10, further comprising: a control device and a display device;