CN212582041U - Nanofiber membrane preparation system based on electrostatic spinning - Google Patents
Nanofiber membrane preparation system based on electrostatic spinning Download PDFInfo
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- CN212582041U CN212582041U CN202021199312.7U CN202021199312U CN212582041U CN 212582041 U CN212582041 U CN 212582041U CN 202021199312 U CN202021199312 U CN 202021199312U CN 212582041 U CN212582041 U CN 212582041U
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Abstract
The application discloses nanofiber membrane preparation system based on electrostatic spinning, including the injection apparatus who is used for storage and quantitative injection polymer solution, receiving arrangement to and anodal electricity even injection apparatus, the high-pressure generator of receiving arrangement is connected to the negative pole electricity, injection apparatus is including spraying the driver, with the pressure-equalizing box that sprays the driver intercommunication, pressure-equalizing box lower surface demountable seal installs a plurality of shower nozzles. The utility model has the advantages of difficult blockage of the spray head, low later maintenance cost and convenient replacement; and the spinning device can be suitable for spinning polymer solutions with different viscosities by heating the pressure equalizing box, and has strong practicability.
Description
Technical Field
The utility model relates to an electrostatic spinning field especially relates to electrostatic spinning and nanofiber membrane's preparation system field, concretely relates to nanofiber membrane preparation system based on electrostatic spinning.
Background
Electrospinning is a special form of electrostatic atomization of high molecular fluids, where the material split by atomization is not a tiny droplet, but a tiny jet of polymer, which can travel a considerable distance and eventually solidify into fibers.
Electrospinning is a special fiber manufacturing process, where polymer solutions or melts are jet spun in a strong electric field. Under the action of the electric field, the liquid drop at the needle head changes from a spherical shape to a conical shape (i.e. a Taylor cone) and extends from the tip of the cone to obtain a fiber filament. This way, polymer filaments of nanometer-scale diameter can be produced. Electrostatic spinning is one of the simple and effective methods in the field of nanofiber membrane preparation, and of course, the nanofiber can also be prepared by molecular techniques, such as: arc discharge, laser ablation, and fixed bed catalytic cracking. The former two methods have difficulty in separation and purification due to coexistence of carbon products in various forms. The arc discharge method is to place graphite rod in a container filled with hydrogen and to deposit carbon nanotube on the cathode by high voltage arc discharge. The fixed bed catalytic cracking process prepares carbon nanotube with natural gas, and blows the gas with activated catalyst in the distributing board into boiling state to grow carbon nanotube on the surface of the catalyst. The method has simple process, low cost, easy control of the scale of the carbon nanotubes, large length and high yield, but the catalyst in the method can only be developed in a thin film form. Meanwhile, a biological preparation method, namely, the cellulose with finer grain is cultured by bacteria to obtain the cellulose.
Although the electrospinning technology is relatively mature and simple, the practical application still has more problems. For example, the spray head is easy to block and is not easy to clean after being blocked. In particular, in order to obtain thin fibers, the nozzle mechanism is often blocked by micropores, and meanwhile, the problems of blockage and uneven fiber quality of a single nozzle are very easy to occur due to polymer solutions with different viscosities.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems that a spray head is easy to block and is not easy to clean in the prior art, the application provides a nanofiber membrane preparation system based on electrostatic spinning; simultaneously, to the different easy shower nozzles that lead to of micropore that lead to of current different polymer solution viscosity to maintain the change often that lead to, influence nanofiber membrane production efficiency's problem, heatable surge tank has still been added to the creative injection apparatus of this application. Through the adjustment temperature with the viscosity that changes different polymer solutions can match with the micropore diameter on the shower nozzle all the time to reduce or avoid taking place the problem that the shower nozzle blockked up because of the viscosity is too high.
This application is in order to promote the practicality and maintain the convenience, and arbitrary shower nozzle all adopts the mode of dismantling, replaces current modularization shower nozzle through single change shower nozzle, reduction maintenance cost that can be further. Further, the cooling turbulence cover is creatively added, so that the forming time of the fibers is shorter, irregular movement can be performed in more time after the fibers are formed, and finally, the fibers obtained on the receiving device are interwoven more uniformly.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
the nanofiber membrane preparation system based on electrostatic spinning comprises a spraying device, a receiving device and a high-voltage generator, wherein the spraying device is used for storing and quantitatively spraying a polymer solution, the receiving device is used for collecting nanofibers, the positive electrode of the high-voltage generator is electrically connected with the spraying device so that the polymer solution is positively charged, the negative electrode of the high-voltage generator is electrically connected with the receiving device, the spraying device comprises a spraying driver and a pressure equalizing box, the spraying driver is used for controlling the spraying flow rate of the polymer solution, the pressure equalizing box is communicated with the spraying driver, and a plurality of spray heads are detachably and hermetically;
the pressure equalizing box is formed by last box, the lower box that electrically conducts and the box lateral wall sealing connection of insulation, down the box include with the positive connection's of high voltage generator current collection board, go up the internal fixed surface of box and install the hot plate that is used for adjusting polymer solution temperature, the hot plate electricity is connected with the controller unit that is used for carrying out temperature regulation.
The working principle is as follows: respectively adding a positive electrode and a negative electrode on the jetting device and the receiving device through high voltage output by the high-voltage generator, so that a great voltage difference exists between the jetting device and the receiving device, and an electric field condition of fiber jet wire drawing is constructed; the high voltage generator can control the output voltage between several kilovolts and ten kilovolts according to the actual requirement, and is different according to different receiving distances and different fiber requirements. The polymer solution for preparing the nano-fibers is placed in a spraying device for quantitative spraying, the polymer solution is sprayed, drawn and formed under the action of an electric field through a spray head, and the formed fibers are attached to a receiving device. The polymer solution may be adapted to a variety of solutions such as polyvinyl alcohol (PVA), aqueous polyurethane (WPU) emulsions, and water-soluble nylons, which may be used for spinning. But because of the different properties, the viscosity and the adhesive force of different solutions, the structure of the spray head is fixed, in order to achieve the best effect, the temperature of the heating plate is adjusted through the controller unit to change the viscosity of different solutions, so that no matter what polymer is easy, and the system has the same spraying performance when being used for electrostatic spinning. The function of the surge tank is to distribute the polymer evenly to each of the collector plate-mounted spray heads to provide a uniform spray of polymer solution. When any spray head is blocked, the spray head can be independently replaced without adjusting a pressure equalizing box and other spray heads, so that the maintenance procedure is simplified, and the maintenance cost is reduced. Due to the design, the number of the spray heads can be infinitely increased on the premise that the area of the heating plate on the pressure equalizing box allows, so that the yield of the nano fibers can be greatly increased, and the yield of the nano fibers can be effectively increased and the maintenance cost can be effectively compatible with each other.
As a preferred scheme of the application, the nozzle is structurally arranged and comprises a connecting part which is integrally formed and provided with an external thread, a fastening part for convenient installation and a jet part with a conical outer part from top to bottom; the shower nozzle has the water conservancy diversion chamber, the water conservancy diversion chamber is through setting up a plurality of micropores and the intercommunication of efflux portion lateral wall in efflux portion. The spray head can be machined by a numerical control machine or manufactured by a mould. In a working state, the polymer solution enters each micropore through the flow guide cavity, finally reaches the surface of the conical jet flow part, flows downwards along the surface to reach the tip part of the jet flow part, stays at the tip part by means of the self adhesive force and increases continuously along with the polymer solution; because the spray head is connected with the collector plate, the spray head and the polymer solution are all positively charged, and under the action of gravity and electric field force, the polymer solution slowly forms a Taylor cone and finally forms jet flow to form fibers to reach the surface of a receiving device. Thus, each nozzle has only one tip, and can form a fiber, so the number of nozzles determines the yield and efficiency of nanofibers.
The diameter of the micropores is 0.8-1.2mm, the radial length is 3-4mm, and the number of the micropores is 10-15. The distance between the diameter and the radial length of the micropores is data matched in pairs, and the diameter and the radial length are in positive correlation change. The reason for this is that, under the premise of the same diameter and the same polymer solution, the longer the radial length is, the larger the adhesion force near the end of the micropore is, the more likely the blockage occurs; conversely, if the radial length is too short, the flow of the polymer solution is more smooth, and the difficulty of controlling the flow of the polymer solution is increased. Furthermore, although the present application can adjust the viscosity of the polymer solution by temperature, the temperature adjustment has limitations, and after the local temperature is high to form an internal temperature difference, the flow rate of the polymer solution at the nozzle and the flow rate controlled by the spray driver will deviate from a linear relationship, so that the precise control is distorted or has a large error, which directly results in a great change in the quality of the produced fiber, including the increase of several times or even tens of times of the fiber diameter.
As a preferred technical solution of the present application, a second container for storing a polymer solution is further disposed between the spray driver and the pressure equalizing tank, and the second container is communicated with the spray driver through a second conduit; the second container is also provided with a first conduit for communicating with the first container, and the first conduit is provided with a one-way valve for allowing the polymer solution to flow from the first container to the second container. The second container is mainly used for temporarily storing the polymer solution and absorbing the redundant heat of the pressure equalizing box, so that the polymer solution in the pressure equalizing box is prevented from generating internal thermal expansion due to heating to influence the accurate control of the injection driver, and the fiber forming diameter is not controllable. The first container is used for adding polymer solution, the one-way valve is used for sucking newly-added polymer solution into the second container when the injection driver is adopted and the injection driver completes a driving period and then needs to drive a second period, a pumping-back action is needed, the one-way valve is arranged for sucking the newly-added polymer solution into the second container, and when the injection driver drives and injects, the one-way valve is in a closed state, so that the polymer solution can only flow out through the nozzle all the time. If continuous pressure control is used for the spray actuator, the polymer solution in the second container can be used up at once. This application adopts the purpose of above-mentioned setting in order to promote this scheme's compatibility.
The distance between the spray head and the receiving device is 12-16 cm. Because the receiving distance is related to the voltage difference of the electric field, the fibers can be received by increasing the receiving distance to 21cm under the condition that the voltage difference is met, but the amplification shows that the arrangement of the obtained fiber membrane is not uniform after the distance is too large, the required voltage is higher, more than 12 kilovolts are generally required, and the energy consumption is also higher; according to the main current high voltage generator sold in the market, the voltage can be controlled to be 6-8 kilovolts, and then the ideal nanofiber can be obtained.
As a preferred scheme of the application, the receiving device is arranged in a circular shape and is driven by a driving device arranged below the receiving device to rotate, the rotating speed is 0.2-0.4r/min, and the projection of any spray head arranged on the pressure equalizing box is positioned on the receiving device; the distance between the spray head and the receiving device is 12-16 cm.
As the original design of this application, be provided with the cooling vortex cover that both ends opening is the tube-shape between pressure-equalizing box and the receiving arrangement, the upper and lower terminal surface and pressure-equalizing box, the receiving arrangement contactless of cooling vortex cover, the cooling vortex covers the fixed cooling tube that is spiral winding that is provided with, the inlet end and the exhaust end and the external air conditioning circulator intercommunication of cooling tube. The vortex cover has three functions:
the fiber between one of them, can effective restraint electric field carries out irregular motion at the within range of vortex cover, guarantees that whole fibre output stacks on receiving arrangement for the fibrous membrane that receiving arrangement obtained is more regular, and the cylindric piles up, does benefit to follow-up processing and utilization.
And secondly, the turbulence cover can provide a good temperature environment for fiber forming, and is favorable for rapid forming of fibers. After the polymer solution is jetted from the nozzle, water is evaporated instantly, the polymer solution can be quickly formed when meeting cold air, and can be naturally interwoven under the action of an electric field, so that the receiving device can obtain the fiber membrane uniformly distributed.
Thirdly, due to the addition of the turbulence cover, the molding can be carried out more quickly under the action of the same electric field; under the condition of the same receiving distance, lower voltage and energy consumption can be met, and the method has a remarkable effect on high-yield production.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a perspective view of the pressure equalization box and the sprinkler installation;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic structural diagram of the cooling spoiler cover according to the present invention;
FIG. 4 is an enlarged view of the structure of region A in FIG. 3;
FIG. 5 is a top view of the surge tank and receiving device of the structure of FIG. 3;
fig. 6 is an axial cross-sectional view of the spray head.
In the figure: 1-a first container; 2-a first conduit; 21-a one-way valve; 3-a second container; 4-a second conduit; 5-a jet drive; 6-a pressure equalizing box; 61-a spray head; 611-a flow guide cavity; 612-a connecting portion; 613-fastening parts; 614-jet section; 615-micropores; 616-tip;
62-heating plate; 63-a current collecting plate; 7-a receiving device; 8-a high voltage generator; 9-a drive device; 10-cooling the turbulence cover; 101-an air inlet end; 102-exhaust end.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1:
the nanofiber membrane preparation system based on electrostatic spinning, which is shown in the attached drawings 1 and 2 of the specification, comprises a spraying device for storing and quantitatively spraying a polymer solution, a receiving device 7 for collecting nanofibers, and a high-voltage generator 8, wherein the positive electrode of the high-voltage generator is electrically connected with the spraying device to make the polymer solution positively charged, the negative electrode of the high-voltage generator is electrically connected with the receiving device 7, the spraying device comprises a spraying driver 5 for controlling the spraying flow rate of the polymer solution, and a pressure equalizing box 6 communicated with the spraying driver 5, and a plurality of spray heads 61 are detachably and hermetically mounted on the lower surface of the pressure equalizing box 6;
the pressure equalizing box 6 is formed by last box, the lower box that electrically conducts and insulating case lateral wall sealing connection, the lower box include with the positive pole of high voltage generator 8 is connected collects the board 63, go up the internal fixed surface of box and install the hot plate 62 that is used for adjusting polymer solution temperature, hot plate 62 electricity is connected with the controller unit that is used for carrying out temperature regulation.
The working principle is as follows: respectively adding a positive electrode and a negative electrode on the jetting device and the receiving device 7 through high voltage output by the high-voltage generator 8, so that a great voltage difference exists between the jetting device and the receiving device 7, and an electric field condition of fiber jetting and wire drawing is constructed; the high voltage generator 8 can control the output voltage between several kilovolts and ten kilovolts according to the actual requirement, and is different according to different receiving distances and different fiber requirements. The polymer solution for preparing the nano-fibers is placed in a spraying device for quantitative spraying, and the polymer solution is sprayed, drawn and formed through a spraying head 61 under the action of an electric field to form fibers which are attached to a receiving device 7. The polymer solution may be adapted to a variety of solutions such as polyvinyl alcohol (PVA), aqueous polyurethane (WPU) emulsions, and water-soluble nylons, which may be used for spinning. But based on the consideration of different properties, viscosities and adhesive forces of different solutions, the structure of the nozzle is fixed, and in order to achieve the best effect, the temperature of the heating plate 62 is adjusted by the controller unit to change the viscosities of the different solutions, so that no matter what polymer is easy, the system has the same spraying performance when being used for electrostatic spinning. The pressure equalizing tank 6 serves to distribute the polymer evenly to each of the spray heads 61 mounted on the current collecting plate 63 to uniformly spray the polymer solution. When any spray head 61 is blocked, the spray head can be independently replaced without adjusting the equalizing box 6 and other spray heads 61, so that the maintenance procedure is simplified, and the maintenance cost is reduced. Due to the design, the number of the spray heads 61 can be infinitely increased on the premise that the area of the heating plate 62 on the pressure equalizing box 6 allows, so that the yield of the nano fibers can be greatly increased, and the yield of the nano fibers can be effectively increased and the maintenance cost can be effectively reduced. The receiving device 7 may be a conventional single-roll structure for circulating collection, or may be another conventional receiving device 7 for collecting, and the specific structure of the receiving device 7 is determined according to the structure
Example 2:
on the basis of embodiment 1, the present embodiment provides a spray head 61 capable of facilitating maintenance and reducing maintenance cost, specifically, as shown in fig. 6, the spray head 61 is configured to include, from top to bottom, an integrally formed connecting portion 612 having external threads, a fastening portion 613 for facilitating installation, and a jet portion 614 having a tapered external portion; the spray head 61 has a guide chamber 611, and the guide chamber 611 communicates with the outer side wall of the jet part 614 through a plurality of micro holes 615 provided in the jet part 614. The spray head 61 can be machined by a numerical control machine or manufactured by a die. In the working state, the polymer solution enters each micro-pore 615 through the diversion cavity 611, finally reaches the surface of the conical jet part 614, flows downwards along the surface to reach the tip part 616 of the jet part 614, and stays at the tip part 616 by means of the self-adhesive force along with the continuous increase of the polymer solution; since the spray head 61 is connected to the collector plate 63, the spray head 61 and the polymer solution are all positively charged, and under the action of gravity and electric field force, the polymer solution slowly forms a taylor cone and finally forms a jet forming fibers to the surface of the receiving device 7. Thus, each nozzle 61 has only one tip 616 capable of forming a single fiber, so the number of nozzles 61 determines the yield and efficiency of nanofibers.
The diameter of the micropores 615 is 0.8-1.2mm, the radial length is 3-4mm, and the number of the micropores 615 is 10-15. The diameter and radial length of the micropores 615 are in a pair of matching data, and the diameter and the radial length change in positive correlation. The reason for this is that, with the same diameter and the same polymer solution, the longer the radial length, the greater the adhesion near the end of the micropores 615, and the more likely the blockage will occur; conversely, if the radial length is too short, the flow of the polymer solution is more smooth, and the difficulty of controlling the flow of the polymer solution is increased. Furthermore, although the present application can adjust the viscosity of the polymer solution by temperature, the temperature adjustment has limitations, and after the local temperature is high to form an internal temperature difference, the flow rate of the polymer solution at the nozzle 61 and the flow rate controlled by the spray driver 5 will deviate from a linear relationship, so that the precise control is distorted or has a large error, which directly results in a great change in the quality of the produced fiber, including a multiple or even a ten-fold increase in the fiber diameter.
Example 3:
this embodiment is a preferred embodiment, and is further optimized based on embodiment 1, and as shown in fig. 3-5 in the specification, a second container 3 for storing polymer solution is further disposed between the spray actuator 5 and the pressure equalizing tank 6, and the second container 3 is communicated with the spray actuator 5 through a second conduit 4; the second container 3 is also provided with a first conduit 2 for communicating with the first container 1, and the first conduit 2 is provided with a one-way valve for allowing the polymer solution to flow from the first container 1 to the second container 3. The second container 3 is mainly used for temporarily storing the polymer solution and absorbing the redundant heat of the pressure equalizing box 6, so that the polymer solution in the pressure equalizing box 6 is prevented from generating internal thermal expansion due to heating to influence the accurate control of the injection driver 5, and the fiber forming diameter is not controllable. The first container 1 is used for adding polymer solution, the one-way valve is used for sucking newly added polymer solution into the second container 3 when the injection driver 5 completes a driving cycle and needs to drive a second cycle, a pumping-back action is needed, and the one-way valve is in a closed state when the injection driver 5 drives and sprays, so that the polymer solution can only flow out through the spray head 61 all the time. If continuous pressure control is used by the spray actuator 5, the polymer solution in the second container 3 can be used up at once. This application adopts the purpose of above-mentioned setting in order to promote this scheme's compatibility.
The distance between the spray head 61 and the receiving device 7 is 12 cm. Because the receiving distance is related to the voltage difference of the electric field, the fibers can be received by increasing the receiving distance to 21cm under the condition that the voltage difference is met, but the amplification shows that the arrangement of the obtained fiber membrane is not uniform after the distance is too large, the required voltage is higher, more than 12 kilovolts are generally required, and the energy consumption is also higher; according to the main current high voltage generator sold in the market, the voltage can be controlled at 6 kilovolts, and the ideal nanofiber can be obtained.
In this embodiment, the receiving device 7 is arranged in a circular shape and is driven to rotate by a driving device 9 installed below the receiving device 7, the rotating speed is 0.2r/min, and the projection of any one of the nozzles 61 installed on the pressure equalizing box 6 is located on the receiving device 7; the distance between the spray head 61 and the receiving device 7 is 12 cm. It is worth noting that the radius of the receiving device 7 of the present embodiment is slightly larger than the maximum size of the surge tank 6, and the surge tank 6 is arranged in a circular shape, so that a larger density of fiber bundles can be received and a high yield of fibers can be obtained.
As the original design of this application, be provided with the cooling vortex cover 10 that both ends opening is the tube-shape between pressure-equalizing box 6 and the receiving arrangement 7, the upper and lower terminal surface and pressure-equalizing box 6, the receiving arrangement 7 mutual contactless of cooling vortex cover 10, the fixed cooling tube that is spiral winding that is provided with on the cooling vortex cover 10, the inlet end 101 and the exhaust end 102 and the external air conditioning circulator intercommunication of cooling tube.
Has the advantages that:
one, can effectively restrain the fibre between the electric field and carry out irregular motion in the within range of vortex cover 10, guarantee that whole fibre output stacks on receiving arrangement 7 and arrange for the fibre membrane that receiving arrangement 7 obtained is more regular, and the cylindric is piled up, does benefit to follow-up processing and utilization.
Secondly, the turbulence cover 10 can provide a good temperature environment for fiber forming, and is beneficial to rapid fiber forming. After the polymer solution is jetted from the nozzle 61, water is instantly evaporated, and the polymer solution can be rapidly formed when meeting cold air and can be naturally interwoven under the action of an electric field, so that the receiving device 7 can obtain a fiber membrane uniformly distributed.
Thirdly, due to the addition of the turbulence cover, the molding can be carried out more quickly under the action of the same electric field; under the condition of the same receiving distance, lower voltage and energy consumption can be met, and the method has a remarkable effect on high-yield production.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. An electrospinning-based nanofiber membrane manufacturing system comprising a spraying device for storing and quantitatively spraying a polymer solution, a receiving device (7) for collecting nanofibers, and a high voltage generator (8) electrically connected to the spraying device at a positive pole so that the polymer solution is positively charged and electrically connected to the receiving device (7) at a negative pole, characterized in that:
the spraying device comprises a spraying driver (5) for controlling the spraying flow rate of the polymer solution and a pressure equalizing box (6) communicated with the spraying driver (5), wherein a plurality of spray heads (61) are detachably and hermetically mounted on the lower surface of the pressure equalizing box (6);
the pressure equalizing box (6) is formed by last box, the lower box of electrically conductive and insulating case lateral wall sealing connection, down the box include with the positive connection's of high voltage generator (8) current collection board (63), go up the internal fixed surface of box and install hot plate (62) that are used for adjusting polymer solution temperature, hot plate (62) electricity is connected with the controller unit that is used for carrying out temperature regulation.
2. The electrospinning-based nanofiber membrane preparing system according to claim 1, wherein: the spray head (61) comprises a connecting part (612) which is integrally formed and provided with an external thread, a fastening part (613) used for facilitating installation and a jet part (614) with a conical outer part from top to bottom; the spray head (61) is provided with a flow guide cavity (611), and the flow guide cavity (611) is communicated with the outer side wall of the jet part (614) through a plurality of micropores (615) arranged in the jet part (614).
3. The electrospinning-based nanofiber membrane preparing system according to claim 2, wherein: the diameter of the micropores (615) is 0.8-1.2mm, the radial length is 3-4mm, and the number of the micropores (615) is 10-15.
4. The electrospinning-based nanofiber membrane preparing system according to any one of claims 1-3, wherein: a second container (3) for storing polymer solution is arranged between the jet driver (5) and the pressure equalizing box (6), and the second container (3) is communicated with the jet driver (5) through a second conduit (4); the second container (3) is also provided with a first conduit (2) for communicating the first container (1), and the first conduit (2) is provided with a one-way valve for allowing the polymer solution to flow from the first container (1) to the second container (3).
5. The electrospinning-based nanofiber membrane preparing system according to claim 4, wherein: the distance between the spray head (61) and the receiving device (7) is 12-16 cm.
6. The electrospinning-based nanofiber membrane preparing system according to claim 4, wherein: the receiving device (7) is arranged in a circular shape and is driven to rotate by a driving device (9) arranged below the receiving device (7), the rotating speed is 0.2-0.4r/min, and the projection of any spray head (61) arranged on the pressure equalizing box (6) is positioned on the receiving device (7); the distance between the spray head (61) and the receiving device (7) is 12-16 cm.
7. The electrospinning-based nanofiber membrane preparing system according to claim 6, wherein: be provided with cooling vortex cover (10) that both ends opening is the tube-shape between pressure-equalizing box (6) and receiving arrangement (7), the upper and lower terminal surface and pressure-equalizing box (6), receiving arrangement (7) of cooling vortex cover (10) are each other contactless, the fixed cooling tube that is spiral winding that is provided with on cooling vortex cover (10), inlet end (101) and exhaust end (102) and the external air conditioning circulator intercommunication of cooling tube.
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| CN202021199312.7U CN212582041U (en) | 2020-06-24 | 2020-06-24 | Nanofiber membrane preparation system based on electrostatic spinning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115029798A (en) * | 2022-07-28 | 2022-09-09 | 安丹达工业技术(上海)有限公司 | Spinning injection equipment |
| CN115369570A (en) * | 2022-06-30 | 2022-11-22 | 东南大学 | Device and method for continuously producing flexible oxide nanofiber membrane |
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2020
- 2020-06-24 CN CN202021199312.7U patent/CN212582041U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115369570A (en) * | 2022-06-30 | 2022-11-22 | 东南大学 | Device and method for continuously producing flexible oxide nanofiber membrane |
| CN115029798A (en) * | 2022-07-28 | 2022-09-09 | 安丹达工业技术(上海)有限公司 | Spinning injection equipment |
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Effective date of registration: 20220125 Address after: 366301 No. 42, Yingbin Road, Jinjiang (Changting) Industrial Park, Changting County, Longyan City, Fujian Province Patentee after: FUJIAN YILAI INDUSTRIAL Co.,Ltd. Address before: 350100 No. 200 Xiyuan Gong Road, Shangjie Town, Minhou County, Fuzhou City, Fujian Province Patentee before: MINJIANG University |