Nanofiber membrane manufacturing equipment

Abstract

The utility model provides a nanofiber membrane manufacturing equipment, including forming box, slide rail seat, pin header emitter, liquid storage tank, receiving pole and curl roll, slide rail seat is provided in the forming box, liquid storage tank is fixedly connected in the middle of slide rail seat along the front-back direction, pin header emitter is slidingly connected on slide rail seat, the receiving pole is connected with the curl roll, and the curl roll is connected with the liquid storage tank along the front-back direction. The pin header emitting electrode is provided with a plurality of emitting pins, the receiving electrode is rotationally connected to the upper portion of the interior of the forming box, the pin header emitting electrode and the receiving electrode are connected with the positive electrode and the negative electrode of the high-voltage power source in a one-to-one correspondence mode, and the curling roller is rotationally connected into the forming box. According to the nanofiber membrane manufacturing equipment provided by the utility model, the driving assembly is used for driving the pin header emitting electrode to horizontally move along the sliding rail seat, the emitting pin is used for dipping a solution from the liquid storage box, the emitting pin is formed on the receiving electrode under the action of the high-voltage electrode after being exposed out of the liquid storage box, and finally, the nanofiber membrane is collected through the curling roller. The preparation efficiency of the nanofiber membrane is effectively improved, and the forming quality of the nanofiber membrane is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of nanofiber membrane manufacturing technology, and more specifically, it relates to a nanofiber membrane manufacturing equipment. Background Technology

[0002] As a special fiber manufacturing process, electrospinning is increasingly used in industrial production. Electrospinning mainly refers to the jet spinning of polymer solutions or melts in a strong electric field. Its working principle is that under the action of a high-voltage electric field, the droplet at the needle tip, which is coated with the raw material solution and located at the positive electrode of the high-voltage power supply, gradually changes from a spherical shape to a conical shape, namely a Taylor cone, and extends from the tip of the cone to obtain nanofibers, which then attach to the negative high-voltage electrode.

[0003] In existing technologies, the emitter is typically positioned below the receiver. A solution is emitted through a needle, and under the influence of a high-voltage electric field, the solution forms a nanofiber membrane on the receiver from bottom to top. However, existing nanofiber membranes often suffer from low forming efficiency and poor uniformity, making it difficult to guarantee the quality of the formed nanofiber membrane. Utility Model Content

[0004] The purpose of this invention is to provide a nanofiber membrane manufacturing equipment that can ensure the forming quality of nanofiber membranes while improving the forming efficiency of nanofiber membranes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a nanofiber membrane manufacturing device is provided, including a forming box, a slide rail base, a row of needle emitters, a liquid storage tank, a receiving electrode, and a curling roller. The slide rail base is disposed inside the forming box. The liquid storage tank is fixedly connected to the upper middle part of the slide rail base in the front-back direction. The row of needle emitters is slidably connected to the slide rail base in the left-right direction. The row of needle emitters has a plurality of emitting needles disposed through the liquid storage tank in the left-right direction. The row of needle emitters is connected to a driving component for driving its left-right movement. The receiving electrode is rotatably connected to the upper part of the forming box and is used to receive the solution emitted by the row of needle emitters and form it into a nanofiber membrane. One of the row of needle emitters and the receiving electrode is connected to the positive terminal of a high-voltage power supply, and the other is connected to the negative terminal of a high-voltage power supply. The curling roller is rotatably connected inside the forming box and is located above the receiving electrode.

[0006] In one possible implementation, the pin emitter also includes an outer frame, which is fitted around the periphery of the liquid storage tank. The two ends of the emitter are respectively connected to the two opposite inner sidewalls of the outer frame, and the outer frame is slidably connected to the slide rail seat.

[0007] In some embodiments, the slide rail base includes two side beams and two guide rails. The two side beams are symmetrically located on both sides of the liquid storage tank, and the two guide rails are located at the two ends of the side beams respectively. The guide rails are supported below the ends of the liquid storage tank, and the outer frame is slidably connected to the two guide rails.

[0008] In one possible implementation, the drive assembly includes a rotary drive, a lead screw, and a lead screw nut. The lead screw is rotatably connected inside the forming box and extends along the direction of the launching needle. The lead screw is connected to the rotary drive via a transmission component. The lead screw nut is connected to the bottom of the needle launcher and is threadedly engaged with the lead screw. The lead screw nut can drive the needle launcher to move left and right along the slide rail under the action of the lead screw.

[0009] In some embodiments, the transmission component includes a drive gear disposed at the output end of the rotary drive component and a driven gear disposed at the end of the lead screw. The driven gear meshes with the drive gear and is used to drive the lead screw to rotate under the action of the drive gear.

[0010] In one possible implementation, a heating rod is provided inside the molding box. Two heating rods are provided at the bottom of the molding box, and the two heating rods are located on both sides of the liquid storage tank in a one-to-one correspondence. A heat-conducting cover with an upward opening is provided on the outer periphery of the heating rod. The heat-conducting cover is set below the emitter of the pin header, and the upper opening area of ​​the heat-conducting cover gradually increases.

[0011] In one possible implementation, a filter plate and an exhaust fan are provided on the side wall of the molding box. The filter plate is located near the bottom of the molding box to filter the gas entering the molding box, and the exhaust fan is located near the top of the molding box to discharge the gas inside the molding box.

[0012] In one possible implementation, the receiving electrode is suspended at the top of the forming box via a lifting drive, and a guide roller is rotatably connected inside the forming box between the receiving electrode and the winding roller. The guide roller is used to guide the nanofiber membrane to wind onto the winding roller.

[0013] In some embodiments, a tensioning roller for tensioning the nanofiber membrane is provided between the guide roller and the curling roller, and elastic push seats for elastically pushing the ends of the tensioning roller are respectively provided on the two opposite inner side walls of the forming box, and the two ends of the tensioning roller are rotatably connected to the elastic push seats.

[0014] In one possible implementation, the inner wall of the molding box is provided with a sliding limiting groove, and the elastic push seat includes an elastic element disposed in the sliding limiting groove and an arc-shaped seat connected to the outer end of the elastic element. The tensioning roller is rotatably connected to the arc-shaped seat and is used to press against the surface of the nanofiber membrane to tension the nanofiber membrane.

[0015] Compared with the prior art, the solution shown in this application embodiment uses a driving component to drive the needle emitter to move horizontally along the slide rail seat. The emitter needle dips into the liquid storage tank and, after being exposed in the liquid storage tank, is formed on the receiving electrode under the action of a high-voltage electrode to form a nanofiber membrane. Finally, the nanofiber membrane is collected by a curling roller, which effectively improves the preparation efficiency of nanofiber membrane, avoids equipment downtime caused by traditional needle blockage, and ensures the forming quality of nanofiber membrane. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a partial cross-sectional view of the nanofiber membrane manufacturing equipment provided in an embodiment of this utility model;

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0019] Figure 3 This is an embodiment of the present utility model. Figure 1 A partial enlarged structural diagram of part I;

[0020] Figure 4 This is an embodiment of the present utility model. Figure 2 Schematic diagram of the cross-sectional structure of BB.

[0021] The following are the labeling elements in the figure:

[0022] 1. Molding box; 11. Air filter plate; 12. Exhaust fan; 13. Sliding limiting groove; 2. Slide rail seat; 21. Side beam; 22. Guide rail; 3. Needle emitter; 31. Emitting needle; 32. Outer frame; 4. Liquid storage tank; 5. Receiving electrode; 51. Lifting drive component; 52. Guide roller; 53. Tensioning roller; 54. Elastic push seat; 55. Elastic component; 56. Arc seat; 6. Curling roller; 7. Drive assembly; 71. Rotary drive component; 72. Lead screw; 73. Nut; 74. Drive gear; 75. Driven gear; 8. Heating rod; 81. Heat conduction cover; 9. Nanofiber membrane. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0025] Please refer to the following: Figures 1 to 4 The nanofiber membrane manufacturing equipment provided by this utility model will now be described. The nanofiber membrane manufacturing equipment includes a forming box 1, a slide rail seat 2, a row of needle emitters 3, a liquid storage tank 4, a receiving electrode 5, and a winding roller 6. The slide rail seat 2 is disposed inside the forming box 1. The liquid storage tank 4 is fixedly connected to the upper middle part of the slide rail seat 2 in the front-back direction. The row of needle emitters 3 is slidably connected to the slide rail seat 2 in the left-right direction. The row of needle emitters 3 has a plurality of emitting needles 31 disposed in the left-right direction through the liquid storage tank 4. The row of needle emitters 3 is connected to a driving component 7 for driving its left-right movement. The receiving electrode 5 is rotatably connected to the upper part of the interior of the forming box 1 for receiving the solution emitted by the row of needle emitters 3 and forming it into a nanofiber membrane 9. One of the row of needle emitters 3 and the receiving electrode 5 is connected to the positive terminal of a high-voltage power supply, and the other is connected to the negative terminal of a high-voltage power supply. The winding roller 6 is rotatably connected inside the forming box 1 and is located above the receiving electrode 5.

[0026] Compared with the prior art, the nanofiber membrane manufacturing equipment provided in this embodiment uses the driving component 7 to drive the needle emitter 3 to move left and right along the slide rail seat 2. The emitter 31 dips into the liquid storage tank 4 and, after being exposed in the liquid storage tank 4, is formed on the receiver 5 under the action of the high voltage electrode to form a nanofiber membrane 9. Finally, the nanofiber membrane 9 is collected by the curling roller 6, which effectively improves the preparation efficiency of the nanofiber membrane 9, avoids the equipment downtime caused by the blockage of traditional needles, and ensures the forming quality of the nanofiber membrane 9.

[0027] For ease of description, the direction in which the receiving electrode 5 moves the nanofiber membrane 9 is defined as the front side, the opposite direction is the rear side, and the direction perpendicular to the front-rear direction is the left-right direction.

[0028] In this embodiment, the storage tank 4 is fixed above the slide rail 2. The storage tank 4 is connected to the raw material tank via a peristaltic pump to ensure a continuous supply of solution within the storage tank 4. Because the solution has a certain viscosity, even though the side walls of the storage tank 4 have holes for the transmitting needle 31 to pass through, the solution will not flow out. The solution adheres to the outer periphery of the transmitting needle 31 and is carried out of the storage tank 4 when the needle-emitting electrode 3 moves along the slide rail 2. Then, under the action of a high-voltage electric field, it is uniformly formed on the receiving electrode 5 above.

[0029] Since the upper receiving electrode 5 does not have a substrate, the nanofiber membrane 9 can be guided to the winding roller 6 with a small amount of substrate in the initial stage, and then the continuous winding of the nanofiber membrane 9 can continue. At the same time, the receiving electrode 5 should use a small moving speed to ensure that the nanofiber membrane 9 is formed as evenly and fully as possible on the receiving electrode 5, which is conducive to improving the forming quality of the nanofiber membrane 9. At the same time, the forming efficiency of the nanofiber membrane 9 can be ensured by the simultaneous action of multiple emitting needles 31.

[0030] In one possible implementation, please refer to Figures 1 to 4 The pin emitter 3 also includes an outer frame 32, which is sleeved on the outer periphery of the liquid storage tank 4. The two ends of the emitter 31 are respectively connected to the two opposite inner side walls of the outer frame 32, and the outer frame 32 is slidably connected to the slide rail seat 2.

[0031] In this embodiment, the pin-type emitter 3 uses the outer frame 32 to install multiple emitter pins 31. The two ends of each emitter are respectively connected to the two opposite inner sidewalls of the outer frame 32, ensuring the reliable installation of the emitter pins 31. This allows the emitter pins 31 to move synchronously when the outer frame 32 moves left and right, and to dip into the solution in the liquid storage tank 4 to form on the receiving electrode 5 above. This ensures the effective forming of the nanofiber membrane 9 and improves the forming efficiency.

[0032] In some embodiments, please refer to Figures 1 to 4The slide rail base 2 includes two side beams 21 and two guide rails 22. The two side beams 21 are symmetrically located on both sides of the liquid storage tank 4, and the two guide rails 22 are located at the two ends of the side beams 21 respectively. The guide rails 22 are supported below the ends of the liquid storage tank 4, and the outer frame 32 is slidably connected to the two guide rails 22.

[0033] In this embodiment, a rectangular frame structure is formed by two side beams 21 and two guide rails 22. The guide rails 22 and the outer frame 32 form a sliding fit to guide and limit the left and right movement of the needle emitter 3. The liquid storage tank 4 is located in the upper middle part of the guide rail 22, and the outer frame 32 is sleeved on the outer periphery of the liquid storage tank 4, which can drive the emitter 31 to move back and forth in the liquid storage tank 4, making it easy to pick up the solution from the liquid storage tank 4 and avoiding jamming during the movement.

[0034] In one possible implementation, please refer to Figures 1 to 4 The drive assembly 7 includes a rotary drive 71, a lead screw 72, and a lead screw 73. The lead screw 72 is rotatably connected inside the forming box 1 and extends along the direction of the launching needle 31. The lead screw 72 is connected to the rotary drive 71 through a transmission component. The lead screw 73 is connected to the bottom of the needle launching pole 3 and is threadedly engaged with the lead screw 72. The lead screw 73 can drive the needle launching pole 3 to move left and right along the slide rail seat 2 under the action of the lead screw 72.

[0035] In this embodiment, the drive assembly 7 uses a rotary drive component 71 to drive the lead screw 72 to rotate. Then, through the threaded engagement of the lead screw 72 and the lead nut 73, the lead nut 73 and the outer frame 32 move synchronously, ultimately driving the emitting needle 31 to smoothly draw solution from the liquid storage tank 4. The transmission method combining the lead screw 72 and the lead nut 73 improves the stability of the component's operation, facilitating the reciprocating movement of the needle emitter 3 at a stable speed.

[0036] Furthermore, in order to improve operational stability, two lead screws 72 and two lead nuts 73 are provided. The two lead screws 72 and the two lead nuts 73 are arranged in a one-to-one correspondence. The two lead screws 72 can be driven by the same rotary drive component 71, or they can each be driven by a rotary drive component 71.

[0037] In some embodiments, please refer to Figures 1 to 4 The transmission component includes a drive gear 74 located at the output end of the rotary drive component 71 and a driven gear 75 located at the end of the lead screw 72. The driven gear 75 meshes with the drive gear 74 and drives the lead screw 72 to rotate under the action of the drive gear 74. When there are two lead screws 72, the transmission component uses a combination of drive gear 74 and driven gear 75. The drive gear 74 drives the two driven gears 75 on both sides to rotate synchronously, thereby effectively driving the pin header emitter 3.

[0038] In one possible implementation, please refer to Figures 1 to 4 The molding box 1 is equipped with a heating rod 8 inside. There are two heating rods 8 at the bottom of the molding box 1. The two heating rods 8 are located on both sides of the liquid storage tank 4. The outer periphery of the heating rod 8 is equipped with a heat conduction cover 81 with an upward opening. The heat conduction cover 81 is set below the needle emitter 3. The upper opening area of ​​the heat conduction cover 81 gradually increases.

[0039] During the nanofiber membrane 9 molding process, ambient temperature affects its molding quality. The molding chamber 1, surrounding the emitter 3 and receiver 5, not only prevents external environmental influences on product quality but also facilitates temperature control within the molding chamber 1, maintaining it at a suitable molding temperature. A heating rod 8 is used to raise the temperature inside the molding chamber 1. Positioned at a lower bottom of the molding chamber 1, the heating rod 8 utilizes the automatic upward dissipation of heat to effectively regulate the temperature within the molding chamber 1, effectively heating the solution during the emission process and improving molding efficiency and quality.

[0040] In one possible implementation, please refer to Figures 1 to 4 The molding chamber 1 has a filter plate 11 and an exhaust fan 12 installed on its side wall. The filter plate 11 is located near the bottom of the molding chamber 1 to filter the gas entering the molding chamber 1, and the exhaust fan 12 is located near the top of the molding chamber 1 to discharge the gas from the molding chamber 1. The filter plate 11 effectively filters the external airflow entering the molding chamber 1, preventing the introduction of impurities. The exhaust fan 12 discharges the waste gas from the molding chamber 1, preventing impurities present in the gas from mixing into the solution or adhering to the nanofiber membrane 9, thus affecting its molding quality. The exhaust fan 12 is located on the side away from the winding roller 6, preventing the airflow from contaminating the nanofiber membrane 9 to be wound after molding, ensuring product quality.

[0041] In one possible implementation, please refer to Figures 1 to 4 The receiving electrode 5 is suspended at the top of the forming box 1 by a lifting drive 51. Inside the forming box 1, there is a guide roller 52 located between the receiving electrode 5 and the winding roller 6. The guide roller 52 is used to guide the nanofiber membrane 9 to wind onto the winding roller 6.

[0042] In this embodiment, the coiling roller 6 is used to wind the nanofiber membrane 9. In the early stage of forming the nanofiber membrane 9, the starting end of the nanofiber membrane 9 can be guided by the substrate until the nanofiber membrane 9 can be smoothly wound on the coiling roller 6. Then, the subsequent nanofiber membranes 9 can be wound on the coiling roller 6 in sequence.

[0043] The lifting drive component 51 can adopt different structures such as a lead screw assembly, a hydraulic cylinder assembly, or a linear module, which can reliably suspend the receiving electrode 5 at the inner top of the forming box 1 and easily adjust the height of the receiving electrode 5, thus adapting to different forming conditions. The guide roller 52 can guide the nanofiber membrane 9 upward onto the winding roller 6, facilitating the effective winding and collection of the nanofiber membrane 9 by the winding roller 6.

[0044] In some embodiments, please refer to Figures 1 to 4 Between the guide roller 52 and the coiling roller 6, a tensioning roller 53 is also provided for tensioning the nanofiber membrane 9. On the two opposite inner sidewalls of the forming box 1, elastic push seats 54 are respectively provided for elastically pushing the ends of the tensioning roller 53. Both ends of the tensioning roller 53 are rotatably connected to the elastic push seats 54. By setting the elastic push seats 54 to elastically push the tensioning roller 53, the tensioning roller 53 can effectively contact the nanofiber membrane 9, maintaining a certain tension on the nanofiber membrane 9. This helps ensure the flatness of the coil and avoids wrinkles.

[0045] In one possible implementation, please refer to Figures 1 to 4 The inner wall of the molding box 1 is provided with a sliding limiting groove 13. The elastic push seat 54 includes an elastic element 55 disposed in the sliding limiting groove 13 and an arc-shaped seat 56 connected to the outer end of the elastic element 55. The tensioning roller 53 is rotatably connected to the arc-shaped seat 56 and is used to press against the surface of the nanofiber membrane 9 to tension the nanofiber membrane 9.

[0046] In this embodiment, the elastic element 55 is disposed within the sliding limiting groove 13, which limits the extension and retraction direction of the elastic element 55. The arc-shaped push seat is connected to the outer end of the elastic element 55 and is used to install the tension roller 53. By selecting an elastic element 55 with appropriate elasticity, the tension requirements of the nanofiber membrane 9 are met, ensuring the flatness of the nanofiber membrane 9 during curling.

[0047] The aforementioned nanofiber membrane manufacturing equipment utilizes the drive assembly 7 to drive the needle emitter 3 to move horizontally along the slide rail 2. The emitter 31 dips into the liquid storage tank 4 and, after being exposed in the liquid storage tank 4, is formed on the receiver 5 under the action of the high voltage electrode, thus forming a nanofiber membrane 9. Finally, the nanofiber membrane 9 is collected by the curling roller 6, which effectively improves the preparation efficiency of the nanofiber membrane 9, avoids equipment downtime caused by traditional needle blockage, and ensures the forming quality of the nanofiber membrane 9.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nanofiber membrane manufacturing equipment, characterized in that, The system includes a molding box (1), a slide rail base (2), a pin array emitter (3), a liquid storage tank (4), a receiving electrode (5), and a coiling roller (6). The slide rail base (2) is disposed inside the molding box (1). The liquid storage tank (4) is fixedly connected to the upper center of the slide rail base (2) in the front-to-back direction. The pin array emitter (3) is slidably connected to the slide rail base (2) in the left-to-right direction. The pin array emitter (3) has several emitting pins (31) that penetrate the liquid storage tank (4) in the left-to-right direction. The needle emitter (3) is connected to a drive assembly (7) for driving its left and right movement. The receiver (5) is rotatably connected to the inside of the molding box (1) and is used to receive the solution emitted by the needle emitter (3) and form it into a nanofiber membrane (9). One of the needle emitter (3) and the receiver (5) is connected to the positive terminal of the high voltage power supply, and the other is connected to the negative terminal of the high voltage power supply. The curling roller (6) is rotatably connected inside the molding box (1) and located above the receiver (5).

2. The nanofiber membrane manufacturing equipment as described in claim 1, characterized in that, The needle emitter (3) also includes an outer frame (32), which is sleeved on the outer periphery of the liquid storage tank (4). The two ends of the emitter (31) are respectively connected to the two opposite inner sidewalls of the outer frame (32), and the outer frame (32) is slidably connected to the slide rail seat (2).

3. The nanofiber membrane manufacturing equipment as described in claim 2, characterized in that, The slide rail base (2) includes two side beams (21) and two guide rails (22). The two side beams (21) are symmetrically located on both sides of the liquid storage tank (4). The two guide rails (22) are located at the two ends of the side beams (21) respectively. The guide rails (22) are supported below the end of the liquid storage tank (4). The outer frame (32) is slidably connected to the two guide rails (22).

4. The nanofiber membrane manufacturing equipment as described in claim 1, characterized in that, The drive assembly (7) includes a rotary drive (71), a lead screw (72), and a lead screw nut (73). The lead screw (72) is rotatably connected to the forming box (1) and extends along the direction of the launching needle (31). The lead screw (72) is connected to the rotary drive (71) through a transmission component. The lead screw nut (73) is connected to the bottom of the pin emitting pole (3) and is threadedly engaged with the lead screw (72). The lead screw nut (73) can drive the pin emitting pole (3) to move left and right along the slide rail seat (2) under the action of the lead screw (72).

5. The nanofiber membrane manufacturing equipment as described in claim 4, characterized in that, The transmission component includes a drive gear (74) disposed at the output end of the rotary drive component (71) and a driven gear (75) disposed at the end of the lead screw (72). The driven gear (75) meshes with the drive gear (74) and is used to drive the lead screw (72) to rotate under the action of the drive gear (74).

6. The nanofiber membrane manufacturing equipment according to any one of claims 1-5, characterized in that, The molding box (1) is equipped with heating rods (8) inside. Two heating rods (8) are provided at the bottom of the molding box (1). The two heating rods (8) are located on both sides of the liquid storage tank (4) respectively. The outer periphery of the heating rods (8) is provided with heat-conducting covers (81) with openings facing upwards. The heat-conducting covers (81) are set below the pin emitter (3). The upper opening area of ​​the heat-conducting covers (81) gradually increases.

7. The nanofiber membrane manufacturing equipment according to any one of claims 1-5, characterized in that, The side wall of the molding box (1) is provided with an air filter plate (11) and an exhaust fan (12). The air filter plate (11) is located near the bottom of the molding box (1) and is used to filter the gas entering the molding box (1). The exhaust fan (12) is located near the top of the molding box (1) and is used to discharge the gas in the molding box (1) to the outside.

8. The nanofiber membrane manufacturing equipment according to any one of claims 1-5, characterized in that, The receiving electrode (5) is suspended at the top of the forming box (1) by a lifting drive (51). A guide roller (52) is rotatably connected inside the forming box (1) between the receiving electrode (5) and the curling roller (6). The guide roller (52) is used to guide the nanofiber membrane (9) to wind around the curling roller (6).

9. The nanofiber membrane manufacturing equipment as described in claim 8, characterized in that, Between the guide roller (52) and the curling roller (6), a tensioning roller (53) for tensioning the nanofiber membrane (9) is also provided. On the two opposite inner sidewalls of the forming box (1), there are elastic pushing seats (54) for elastically pushing the ends of the tensioning roller (53). The two ends of the tensioning roller (53) are rotatably connected to the elastic pushing seats (54).

10. The nanofiber membrane manufacturing equipment as described in claim 9, characterized in that, The inner wall of the molding box (1) is provided with a sliding limiting groove (13). The elastic push seat (54) includes an elastic element (55) disposed in the sliding limiting groove (13) and an arc-shaped seat (56) connected to the outer end of the elastic element (55). The tensioning roller (53) is rotatably connected to the arc-shaped seat (56) and is used to press against the surface of the nanofiber membrane (9) to tension the nanofiber membrane (9).

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