Electrostatic spinning device and spinning process thereof

Abstract

The present invention belongs to the field of electrostatic spinning technology and discloses an electrostatic spinning device and a spinning process thereof, comprising a spinning nozzle, a pressure flap valve fixedly installed in the middle of the rear end of the spinning nozzle, a liquid inlet valve fixedly installed on the outer side of the pressure flap valve at the rear end of the spinning nozzle, and a nozzle embedded in the front end of the spinning nozzle. The present invention utilizes the pressure of its own solution and converts the pressure provided by the increased solution into power to achieve the automatic rise of the first movable plate and the automatic rise of the second movable plate, thereby achieving the automatic entry of external auxiliary gas. When the solution pressure is insufficient, the gas entry channel is automatically cut off, and the entire process is completed automatically without the need for external power or manual assistance. This can effectively avoid the problem of traditional devices interfering with spinning due to the auxiliary gas discharged when no gas input is required, and achieve automatic introduction of auxiliary gas on demand, thereby improving the spinning quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrostatic spinning, and in particular relates to an electrostatic spinning device and a spinning process thereof. Background Art

[0002] Electrospinning is a technique commonly used to produce nanofibers, utilizing electrostatic forces to spin polymer solutions or molten polymers into fibers. This technique has the ability to produce fibers with high surface area, high specific surface area, small diameter, and nanoscale dimensions, and is therefore widely used in fields such as nanomaterials, nanodevices, and nanocomposites. The electrospinning process typically involves the use of an electrospinning device, which utilizes the electrostatic effect to convert liquids or solutions into fibers. The device typically consists of a liquid supply, an electrospinning nozzle, a collection device, and a high-voltage device.

[0003] Conventional electrospinning devices mainly consist of a liquid spraying device consisting of a liquid storage tank and a nozzle. The liquid solution can be stretched into fibers at the nozzle through the action of a high-voltage electrode. However, due to the concentration and temperature of the solution, the solution is easily blocked at the nozzle. In order to reduce blockage, the existing technology often uses external gas assistance to inject gas into the inside of the nozzle to prevent blockage. However, when the solution content inside the nozzle is low, the input gas will have a certain impact on the normal fiber stretching. Therefore, how to automatically input gas when the solution content is high is crucial.

[0004] Although the prior art adjusts the viscosity of the solution, controls the temperature of the solution, and introduces a certain amount of gas to prevent the nozzle from clogging, even if various means are used to reduce the possibility of clogging, the nozzle will still become clogged after a period of use. At this time, the device must be shut down, and the nozzle must be manually disassembled and cleaned before it can be unblocked. The overall efficiency is low and urgently needs to be improved. Summary of the Invention

[0005] The object of the present invention is to provide an electrospinning device and a spinning process thereof to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electrostatic spinning device, comprising a spinning nozzle, a pressure flap valve is fixedly installed in the middle of the rear end of the spinning nozzle, a liquid inlet valve located on the outer side of the pressure flap valve is fixedly installed at the rear end of the spinning nozzle, a nozzle is embedded in the front end of the spinning nozzle, the nozzle is connected to the interior of the spinning nozzle, a dredging component is installed at the rear end of the inner cavity of the spinning nozzle, the rear end of the dredging component is connected to the pressure flap valve, an electrode clamp is fixedly sleeved on the outer side of the spinning nozzle near the nozzle, a liquid separation valve is fixedly connected to the outer side of the spinning nozzle near the rear end, a fixed tube located at the front end of the liquid separation valve is fixedly installed in the middle of the outer side of the spinning nozzle, and an air storage tube is fixedly installed on the top end of the fixed tube, and neither the liquid separation valve nor the fixed tube is connected to the interior of the spinning nozzle.

[0007] As a further technical solution of the present invention, the rear end of the spinning nozzle is fixedly connected to a liquid storage tank, the internal movable sleeve of the liquid storage tank is provided with a first piston plate, the rear end of the first piston plate is fixedly connected to a second piston rod, and the rear end of the second piston rod passes through the rear end of the liquid storage tank and is fixedly connected to a propulsion plate.

[0008] As a further technical solution of the present invention, the first piston plate is displaced forward and backward relative to the liquid storage tank, a fixed sleeve is fixedly sleeved on the middle part of the outer side surface of the liquid storage tank, the bottom end of the fixed sleeve is fixedly connected to the base, the rear end of the base is fixedly connected to the extension frame, the rear end of the inner side surface of the extension frame is fixedly connected to the electric telescopic rod, and the output end of the electric telescopic rod is connected to the rear end of the propulsion plate.

[0009] In actual use, the device can be connected to a slide with at least three axes of freedom through the fixing hole at the bottom of the base to ensure the freedom of the device, and the high-pressure collection device and the device are matched to ensure the normal collection of the fiber, and the external electrode and the electrode clamp need to be connected, and at least enough solution for a single fiber stretching is injected into the interior of the liquid storage tank, and the external gas input device and the air inlet pipe are connected to complete the preparation before spinning. During spinning, the displacement of the device can be achieved through the external freedom device, and the thrust can be applied to the propulsion plate by turning on the electric telescopic rod. At this time, the second piston rod and the first piston plate can be pushed forward. At this time, the first piston plate then applies pressure to the interior of the liquid storage tank, prompting the solution to enter the interior of the spinning nozzle through the pressure flap valve, and under the action of the external electrode of the electrode clamp, the solution is stretched into fibers through the nozzle and the external high-pressure collection device to complete the collection process.

[0010] As a further technical solution of the present invention, the top of the liquid dividing valve is fixedly connected to a first infusion tube, the other end of the first infusion tube is connected to the rear side of the outer side of the fixed tube and close to the top, and a second infusion tube is fixedly connected to the front side of the outer side of the fixed tube and close to the top, the other end of the second infusion tube is connected to the spinning nozzle, and the input end of the second infusion tube is located above the output end of the first infusion tube.

[0011] As a further technical solution of the present invention, the internal movably sleeve of the fixed tube is provided with a first movable plate, the top end of the first movable plate is fixedly connected to a movable rod, the top end of the movable rod passes through the top end of the fixed tube and the bottom end of the gas storage tube in sequence and is located inside the gas storage tube, the top end of the movable rod is fixedly connected to a second movable plate located inside the gas storage tube, the second movable plate is displaced up and down relative to the gas storage tube, the outer side surface of the movable rod is movably sleeved with a first return spring, the upper and lower ends of the first return spring are respectively connected to the bottom end of the second movable plate and the bottom end of the inner cavity of the gas storage tube.

[0012] As a further technical solution of the present invention, the rear end of the outer side surface of the air storage pipe is fixedly connected to the air inlet pipe located below the second movable plate, and the front end of the outer side surface of the air storage pipe is fixedly connected to the air supply pipe located below the second movable plate, and the other end of the air supply pipe is connected to the interior of the spinning nozzle.

[0013] When the second movable plate is moved above the second liquid infusion tube, the solution can flow back to the interior of the spinning nozzle through the second liquid infusion tube. When the second movable plate rises, the second movable plate is located above the air inlet pipe, and the high-pressure gas enters the interior of the air storage tube through the air inlet pipe and is guided into the interior of the spinning nozzle to assist in the spinning process and avoid fiber clogging. When the solution decreases, that is, the pressure drops, the first return spring automatically resets, the first movable plate and the second movable plate automatically move down, and the input end of the air inlet pipe is blocked and the gas no longer enters the interior of the spinning nozzle, so that the auxiliary gas input is automatically stopped when the solution is insufficient.

[0014] By utilizing the pressure of the solution itself and converting the pressure provided by the increased solution into power to realize the automatic rise of the first movable plate and the automatic rise of the second movable plate, the automatic entry of external auxiliary gas can be achieved. When the solution pressure is insufficient, the channel for gas entry is automatically cut off, and the entire process is completed automatically without the need for external power and manual assistance. This can effectively avoid the problem of traditional devices interfering with spinning due to the auxiliary gas exported when gas input is not needed, and realize the automatic introduction of auxiliary gas on demand, thereby improving the spinning quality.

[0015] As a further technical solution of the present invention, the dredging component includes a temporary storage tube, the rear end of the temporary storage tube is connected to the pressure flap valve, the interior of the temporary storage tube is movably sleeved with a second piston plate, the front end of the second piston plate is fixedly connected to a second piston rod, the outer side surface of the second piston rod is movably sleeved with a second return spring, and the front and rear sides of the second return spring are respectively connected to the front end and the rear end of the inner cavity of the temporary storage tube.

[0016] As a further technical solution of the present invention, the upper and lower sides of the temporary storage tube near the front end are fixedly connected with drainage ports, and the insides of the two drainage ports are installed with one-way valves and the directions of the valves are outward conduction and inward shutoff, and a dredging plate is fixedly installed at the front end of the second piston rod.

[0017] As a further technical solution of the present invention, a cleaning groove is provided on the outer side of the dredging plate, the diameter of the dredging plate is the same as the inner diameter of the spinning nozzle near the front end, the front end of the dredging plate is fixedly connected to a dredging rod, the front end of the dredging rod is provided with a guide cone surface, and the diameter of the dredging rod is the same as the inner diameter of the nozzle.

[0018] When the inside of the nozzle is clogged, the solution inside the spinning nozzle will increase accordingly. As the solution pressure increases, the pressure flap valve will automatically open due to the pressure, and the solution will enter the interior of the temporary storage tube through the liquid inlet and exert pressure on the second piston plate. At this time, the second piston plate and the second piston rod will move forward, and the second return spring will be compressed. At this time, the second piston rod, the dredging plate and the dredging rod will move forward accordingly. When the dredging rod moves forward, the dredging rod will enter the interior of the nozzle. At this time, the interior of the nozzle can be dredged, and the dredging plate can also dredge the front end of the spinning nozzle. When the second piston plate moves to the front end of the drain port, the solution can be discharged through the drain port, completing the dredging process from the inside to the outside.

[0019] By further utilizing the pressure of its own solution and the increased solution pressure when blocked, the excess solution is injected into the temporary storage tube, and the pressure of the solution is converted into power to realize the automatic forward movement of the dredging rod. The nozzle is automatically dredged by the action of the dredging rod. The whole process is completed automatically without manual assistance. The nozzle can be automatically dredged after being blocked, effectively avoiding the problem of traditional devices requiring manual disassembly and dredging when blocked, and significantly improving the spinning efficiency.

[0020] A spinning process of an electrospinning device comprises the following steps:

[0021] S1: Before use, the device can be aligned with the external high-pressure collection device and connected to the external three-axis displacement device through the base to ensure the device's freedom. At the same time, ensure that the solution content in the liquid storage tank meets the single production requirements, connect the air inlet pipe to the external gas supply device, and connect the external electrode to the electrode clamp ring to complete the preparation before spinning;

[0022] S2: During spinning, the electric telescopic rod can be turned on to push the propulsion plate, the second piston rod and the first piston plate forward, thereby applying pressure to the solution in the liquid storage tank so that it enters the interior of the spinning nozzle. At this time, the solution then enters the interior of the nozzle and is stretched into fibers through the nozzle under the action of the electrodes on the outer side of the electrode clamp and the external high-voltage electric field, completing the spinning process.

[0023] S3: At the same time, when the solution increases, the solution can enter the interior of the first liquid infusion pipe through the liquid separator valve and exert pressure on the first movable plate, causing the first movable plate to rise. At this time, the solution can flow back to the interior of the spinning nozzle through the second liquid infusion pipe. When the first movable plate rises, it can drive the movable rod and the second movable plate to rise until the second movable plate is moved above the air inlet pipe. At this time, the high-pressure gas then enters the interior of the air storage pipe through the air inlet pipe and is discharged through the air delivery pipe to act on the interior of the spinning nozzle to complete the auxiliary spinning process;

[0024] S4: When the gas pressure is insufficient, the first return spring automatically returns to its original position, driving the first movable plate and the second movable plate to move downward. At this time, the inlet of the air inlet pipe is closed, and the gas no longer enters the interior of the spinning nozzle, completing the automatic closing of the gas-assisted system.

[0025] S5: When the inside of the nozzle is clogged, as the internal pressure of the spinning nozzle increases, the solution applies pressure to the pressure flap valve until the valve of the pressure flap valve is opened, and the solution then enters the temporary storage tube through the liquid inlet. At this time, the second piston rod, the dredging plate and the dredging rod move forward until the dredging rod passes through the nozzle, and the nozzle can be automatically dredged. The solution inside the temporary storage tube can be discharged through the drain port, completing the reset of the device.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. The present invention utilizes the pressure of the solution itself and converts the pressure provided by the increased solution into power to realize the automatic rise of the first movable plate and the automatic rise of the second movable plate, thereby realizing the automatic entry of external auxiliary gas. When the solution pressure is insufficient, the channel for gas entry is automatically cut off, and the entire process is completed automatically without the need for external power and manual assistance. This can effectively avoid the problem of traditional devices interfering with spinning due to the auxiliary gas exported when gas input is not needed, and realizes the automatic introduction of auxiliary gas on demand, thereby improving the spinning quality.

[0028] 2. The present invention further utilizes its own solution pressure. Through the solution pressure increased when blocked, it injects excess solution into the interior of the temporary storage tube, and converts the solution pressure into power to realize the automatic forward movement of the dredging rod. The nozzle is automatically dredged by the action of the dredging rod. The whole process is completed automatically without manual assistance. The nozzle can be automatically dredged after being blocked, effectively avoiding the problem of traditional devices that need to be manually disassembled and dredged when blocked, and significantly improving the spinning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a cross-sectional schematic diagram of the internal structure of the liquid storage tank of the present invention;

[0031] Figure 3 It is a front view of the rear end structure of the spinning nozzle of the present invention;

[0032] Figure 4 Schematic cross-sectional view of the internal structure of the spinning nozzle of the present invention;

[0033] Figure 5 It is a cross-sectional schematic diagram of the internal structure of the fixed pipe and the gas storage pipe of the present invention;

[0034] Figure 6 It is a separate schematic diagram of the structure of the dredging component of the present invention;

[0035] Figure 7 It is a cross-sectional schematic diagram of the internal structure of the dredging component of the present invention;

[0036] Figure 8 for Figure 5 A magnified schematic diagram of the structure at center A.

[0037] In the figure: 1. Spinning nozzle; 2. Liquid inlet valve; 3. Pressure flap valve; 4. Liquid storage tank; 5. First piston plate; 6. Second piston rod; 7. Propelling plate; 8. Fixed sleeve; 9. Base; 10. Extension frame; 11. Electric telescopic rod; 12. Nozzle; 13. Electrode clamp; 14. Liquid separation valve; 15. Fixed tube; 16. First movable plate; 17. First infusion tube; 18. Second infusion tube; 19. Movable rod; 20. First return spring; 21. Gas storage tube; 22. Second movable plate; 23. Gas inlet pipe; 24. Gas delivery pipe; 25. Unblocking assembly; 251. Temporary storage tube; 252. Liquid inlet; 253. Liquid outlet; 254. Second piston plate; 255. Second piston rod; 256. Unblocking plate; 257. Unblocking rod; 258. Second return spring. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1 to 8 As shown, in an embodiment of the present invention, an electrostatic spinning device includes a spinning nozzle 1, a pressure flap valve 3 is fixedly installed in the middle of the rear end of the spinning nozzle 1, a liquid inlet valve 2 located on the outer side of the pressure flap valve 3 is fixedly installed at the rear end of the spinning nozzle 1, a nozzle 12 is embedded in the front end of the spinning nozzle 1, the nozzle 12 is connected to the interior of the spinning nozzle 1, a dredging component 25 is installed at the rear end of the inner cavity of the spinning nozzle 1, and the rear end of the dredging component 25 is connected to the pressure flap valve 3, an electrode clamp 13 is fixedly sleeved on the outer side surface of the spinning nozzle 1 near the nozzle 12, a liquid separation valve 14 is fixedly connected on the outer side surface of the spinning nozzle 1 near the rear end, a fixed pipe 15 located at the front end of the liquid separation valve 14 is fixedly installed in the middle of the outer side surface of the spinning nozzle 1, and a fixed An air storage pipe 21 is fixedly installed at the top of the tube 15. The liquid separating valve 14 and the fixed tube 15 are not connected to the interior of the spinning nozzle 1. The rear end of the spinning nozzle 1 is fixedly connected to the liquid storage tank 4. The internal movably sleeve of the liquid storage tank 4 is connected to the first piston plate 5. The rear end of the first piston plate 5 is fixedly connected to the second piston rod 6. The rear end of the second piston rod 6 passes through the rear end of the liquid storage tank 4 and is fixedly connected to the propulsion plate 7. The first piston plate 5 is displaced forward and backward relative to the liquid storage tank 4. A fixed sleeve 8 is fixedly sleeved on the middle part of the outer side surface of the liquid storage tank 4. The bottom end of the fixed sleeve 8 is fixedly connected to the base 9. The rear end of the base 9 is fixedly connected to the extension frame 10. The rear end of the inner side surface of the extension frame 10 is fixedly connected to the electric telescopic rod 11. The output end of the electric telescopic rod 11 is connected to the rear end of the propulsion plate 7.

[0040] In actual use, the device can be connected to a slide with at least three axes of freedom through the fixing hole at the bottom of the base 9 to ensure the freedom of the device, and the high-pressure collection device and the device are matched to ensure the normal collection of the fiber, and the external electrode needs to be connected to the electrode clamp 13, and at least enough solution for a single fiber stretching is injected into the interior of the liquid storage tank 4, and the external gas input device is connected to the air inlet pipe 23 to complete the preparation before spinning. During spinning, the displacement of the device can be achieved through the external freedom device, and the thrust can be applied to the propulsion plate 7 by turning on the electric telescopic rod 11. At this time, the second piston rod 6 and the first piston plate 5 can be pushed forward. At this time, the first piston plate 5 then applies pressure to the interior of the liquid storage tank 4, prompting the solution to enter the interior of the spinning nozzle 1 through the pressure flap valve 3, and under the action of the external electrode of the electrode clamp 13, the solution is stretched into fibers through the nozzle 12 and the external high-pressure collection device to complete the collection process.

[0041] like Figure 4 and Figure 5 as well as Figure 8 As shown, the top of the liquid separation valve 14 is fixedly connected to a first liquid infusion tube 17, and the other end of the first liquid infusion tube 17 is connected to the rear side of the outer side of the fixed tube 15 and near the top. The front side of the outer side of the fixed tube 15 and near the top is fixedly connected to a second liquid infusion tube 18, and the other end of the second liquid infusion tube 18 is connected to the spinning nozzle 1, and the input end of the second liquid infusion tube 18 is located above the output end of the first liquid infusion tube 17. The interior of the fixed tube 15 is movably sleeved with a first movable plate 16, and the top of the first movable plate 16 is fixedly connected to a movable rod 19. The top of the movable rod 19 passes through the top of the fixed tube 15 and the bottom end of the gas storage tube 21 in sequence and is located at the gas storage Inside the tube 21, the top end of the movable rod 19 is fixedly connected to the second movable plate 22 located inside the air storage tube 21, and the second movable plate 22 moves up and down relative to the air storage tube 21. The outer side surface of the movable rod 19 is movably sleeved with a first return spring 20, and the upper and lower ends of the first return spring 20 are respectively connected to the bottom end of the second movable plate 22 and the bottom end of the inner cavity of the air storage tube 21. The rear end of the outer side surface of the air storage tube 21 is fixedly connected to the air inlet pipe 23 located below the second movable plate 22, and the front end of the outer side surface of the air storage tube 21 is fixedly connected to the air supply pipe 24 located below the second movable plate 22. The other end of the air supply pipe 24 is connected to the interior of the spinning nozzle 1.

[0042] Example 1: When the amount of solution inside the spinning nozzle 1 increases, part of the solution can enter the first liquid infusion pipe 17 through the liquid separation valve 14, and enter the fixed pipe 15 through the first liquid infusion pipe 17. At this time, the solution can exert upward pressure on the first movable plate 16. At this time, the first movable plate 16, the movable rod 19 and the second movable plate 22 rise accordingly and the first return spring 20 is compressed. When the first movable plate 16 moves to the top of the second liquid infusion pipe 18, the solution can flow back to the inside of the spinning nozzle 1 through the second liquid infusion pipe 18. When the second movable plate 16 moves to the top of the second liquid infusion pipe 18, the solution can flow back to the inside of the spinning nozzle 1 through the second liquid infusion pipe 18. When the movable plate 22 rises, the second movable plate 22 is located above the air inlet pipe 23, and the high-pressure gas then enters the interior of the air storage pipe 21 through the air inlet pipe 23, and is discharged through the air delivery pipe 24 to enter the interior of the spinning nozzle 1 to assist in the spinning process, thereby avoiding fiber clogging. When the solution is reduced, that is, the pressure drops, the first return spring 20 automatically resets, and the first movable plate 16 and the second movable plate 22 automatically move downward. The input end of the air inlet pipe 23 is blocked, and the gas no longer enters the interior of the spinning nozzle 1, thereby achieving automatic cessation of the auxiliary gas input when the solution is insufficient.

[0043] By utilizing the pressure of the solution itself and converting the pressure provided by the increased solution into power to realize the automatic rise of the first movable plate 16 and the automatic rise of the second movable plate 22, the automatic entry of external auxiliary gas can be realized. When the solution pressure is insufficient, the channel for gas entry is automatically cut off, and the entire process is completed automatically without the need for external power and manual assistance. This can effectively avoid the problem of traditional devices interfering with spinning due to the auxiliary gas exported when no gas input is needed, and realize the automatic introduction of auxiliary gas on demand, thereby improving the spinning quality.

[0044] like Figure 4 and Figure 5 as well as Figure 6 and Figure 7As shown, the dredging component 25 includes a temporary storage tube 251, the rear end of the temporary storage tube 251 is connected to the pressure flap valve 3, the interior of the temporary storage tube 251 is movably connected to a second piston plate 254, the front end of the second piston plate 254 is fixedly connected to a second piston rod 255, the outer side of the second piston rod 255 is movably connected to a second return spring 258, the front and rear sides of the second return spring 258 are respectively connected to the front end of the inner cavity of the temporary storage tube 251 and the rear end of the inner cavity of the temporary storage tube 251, and the upper and lower sides of the temporary storage tube 251 near the front end are connected. The two sides are fixedly connected with a drainage port 253, and the interiors of the two drainage ports 253 are installed with a one-way valve, and the directions of the valves are outward conduction and inward cutoff. The front end of the second piston rod 255 is fixedly installed with a dredging plate 256, and the outer side surface of the dredging plate 256 is provided with a cleaning groove. The diameter of the dredging plate 256 is the same as the inner diameter of the spinning nozzle 1 near the front end. The front end of the dredging plate 256 is fixedly connected with a dredging rod 257, and the front end of the dredging rod 257 is provided with a guide cone surface. The diameter of the dredging rod 257 is the same as the inner diameter of the nozzle 12.

[0045] Example 2: When the inside of the nozzle 12 is blocked, the solution inside the spinning nozzle 1 will increase accordingly. As the solution pressure increases, the pressure flap valve 3 is automatically opened by the pressure valve, and the solution enters the interior of the temporary storage tube 251 through the liquid inlet 252 and exerts pressure on the second piston plate 254. At this time, the second piston plate 254 and the second piston rod 255 are displaced forward, and the second return spring 258 is compressed. At this time, the second piston rod 255, the dredging plate 256 and the dredging rod 257 are displaced forward. When the dredging rod 257 moves forward, the dredging rod 257 enters the interior of the nozzle 12. At this time, the interior of the nozzle 12 can be dredged, and the dredging plate 256 can also dredge the front end of the spinning nozzle 1. When the second piston plate 254 moves to the front end of the drain port 253, the solution can be discharged through the drain port 253, completing the dredging process from the inside to the outside.

[0046] By further utilizing the pressure of the solution itself, the solution pressure increased during blockage is used to inject excess solution into the temporary storage tube 251, and the pressure of the solution is converted into power to realize the automatic forward movement of the dredging rod 257. The nozzle 12 is automatically dredged by the action of the dredging rod 257. The entire process is completed automatically without manual assistance, and the nozzle 12 can be automatically dredged after being blocked, effectively avoiding the problem of traditional devices requiring manual disassembly and dredging when blockage occurs, thereby significantly improving the spinning efficiency.

[0047] A spinning process of an electrospinning device comprises the following steps:

[0048] S1: Before use, the device can be aligned with the external high-pressure collection device and connected to the external three-axis displacement device through the base 9 to ensure the device's freedom. At the same time, it is ensured that the solution content in the liquid storage tank 4 meets the single production requirements. The air inlet pipe 23 is connected to the external gas supply device, and the external electrode is connected to the electrode clamp 13 to complete the preparation before spinning.

[0049] S2: During spinning, the electric telescopic rod 11 can be turned on to push the propulsion plate 7, the second piston rod 6, and the first piston plate 5 forward, thereby applying pressure to the solution in the liquid storage tank 4 so that the solution enters the interior of the spinning nozzle 1. At this time, the solution then enters the interior of the nozzle 12 and is stretched into fibers through the nozzle 12 under the action of the electrodes on the outer side of the electrode clamp 13 and the external high-voltage electric field, completing the spinning process.

[0050] S3: At the same time, when the solution increases, the solution can enter the interior of the first liquid infusion pipe 17 through the liquid separator 14 and exert pressure on the first movable plate 16, causing the first movable plate 16 to rise. At this time, the solution can flow back to the interior of the spinning nozzle 1 through the second liquid infusion pipe 18, and the first movable plate 16 can drive the movable rod 19 and the second movable plate 22 to rise when the first movable plate 16 rises, until the second movable plate 22 moves to the top of the air inlet pipe 23. At this time, the high-pressure gas then enters the interior of the gas storage pipe 21 through the air inlet pipe 23 and is discharged through the air delivery pipe 24 to act on the interior of the spinning nozzle 1 to complete the auxiliary spinning process;

[0051] S4: When the gas pressure is insufficient, the first return spring 20 automatically returns to its original position, driving the first movable plate 16 and the second movable plate 22 downward. At this time, the inlet of the air inlet pipe 23 is closed, and the gas no longer enters the interior of the spinning nozzle 1, completing the gas-assisted automatic closing.

[0052] S5: When the nozzle 12 is clogged, as the internal pressure of the spinning nozzle 1 increases, the solution applies pressure to the pressure flap valve 3 until the valve of the pressure flap valve 3 is opened, and the solution enters the temporary storage tube 251 through the liquid inlet 252. At this time, the second piston rod 255, the dredging plate 256 and the dredging rod 257 move forward until the dredging rod 257 passes through the nozzle 12, so that the nozzle 12 can be automatically dredged, and the solution inside the temporary storage tube 251 can be discharged through the drain port 253, completing the reset of the device.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electrospinning device, comprising a spinning nozzle (1), characterized in that: A pressure flap valve (3) is fixedly installed in the middle of the rear end of the spinning nozzle (1), and a liquid inlet valve (2) located on the outer side of the pressure flap valve (3) is fixedly installed at the rear end of the spinning nozzle (1). A nozzle (12) is embedded in the front end of the spinning nozzle (1), and the nozzle (12) is connected to the interior of the spinning nozzle (1). A dredging component (25) is installed at the rear end of the inner cavity of the spinning nozzle (1), and the rear end of the dredging component (25) is connected to the pressure flap valve (3). An electrode clamp (13) is fixedly sleeved on the outer side of the spinning nozzle (1) near the nozzle (12). The end of the spinning nozzle (1) is fixedly connected to a liquid separation valve (14), the middle of the outer side surface of the spinning nozzle (1) is fixedly installed with a fixed tube (15) located at the front end of the liquid separation valve (14), the top of the fixed tube (15) is fixedly installed with an air storage tube (21), and the liquid separation valve (14) and the fixed tube (15) are not connected to the interior of the spinning nozzle (1); the top of the liquid separation valve (14) is fixedly connected to a first liquid infusion tube (17), the other end of the first liquid infusion tube (17) is connected to the rear side of the outer side surface of the fixed tube (15) and near the top, and the front side of the outer side of the fixed tube (15) and near the top is fixedly connected to a second liquid infusion tube (21). The second liquid infusion tube (18) is connected to the spinning nozzle (1), and the input end of the second liquid infusion tube (18) is located above the output end of the first liquid infusion tube (17); the first movable plate (16) is movably sleeved inside the fixed tube (15), and the top end of the first movable plate (16) is fixedly connected to a movable rod (19), and the top end of the movable rod (19) sequentially passes through the top end of the fixed tube (15) and the bottom end of the gas storage tube (21) and is located inside the gas storage tube (21), and the top end of the movable rod (19) is fixedly connected to a second movable plate (22) located inside the gas storage tube (21), and the second The movable plate (22) moves up and down relative to the air storage tube (21), and the outer side surface of the movable rod (19) is movably sleeved with a first return spring (20), and the upper and lower ends of the first return spring (20) are respectively connected to the bottom end of the second movable plate (22) and the bottom end of the inner cavity of the air storage tube (21); the rear end of the outer side surface of the air storage tube (21) is fixedly connected to the air inlet pipe (23) located below the second movable plate (22), and the front end of the outer side surface of the air storage tube (21) is fixedly connected to the air supply pipe (24) located below the second movable plate (22), and the other end of the air supply pipe (24) is connected to the interior of the spinning nozzle (1).

2. An electrospinning device according to claim 1, characterized in that: The rear end of the spinning nozzle (1) is fixedly connected to a liquid storage tank (4), a first piston plate (5) is movably sleeved inside the liquid storage tank (4), a first piston rod (6) is fixedly connected to the rear end of the first piston plate (5), and a propulsion plate (7) is fixedly connected to the rear end of the first piston rod (6) passing through the rear end of the liquid storage tank (4).

3. An electrospinning device according to claim 2, characterized in that: The first piston plate (5) is displaced forward and backward relative to the liquid storage tank (4); a fixed sleeve (8) is fixedly sleeved on the middle portion of the outer side surface of the liquid storage tank (4); the bottom end of the fixed sleeve (8) is fixedly connected to a base (9); the rear end of the base (9) is fixedly connected to an extension frame (10); the rear end of the inner side surface of the extension frame (10) is fixedly connected to an electric telescopic rod (11); the output end of the electric telescopic rod (11) is connected to the rear end of the propulsion plate (7).

4. An electrospinning device according to claim 3, characterized in that: The dredging assembly (25) includes a temporary storage tube (251), the rear end of the temporary storage tube (251) is connected to the pressure flap valve (3), the interior of the temporary storage tube (251) is movably sleeved with a second piston plate (254), the front end of the second piston plate (254) is fixedly connected to a second piston rod (255), the outer side surface of the second piston rod (255) is movably sleeved with a second return spring (258), and the front and rear ends of the second return spring (258) are respectively connected to the front end of the inner cavity of the temporary storage tube (251) and the rear end of the inner cavity of the temporary storage tube (251).

5. An electrospinning device according to claim 4, characterized in that: The temporary storage tube (251) is fixedly connected to drain ports (253) on both upper and lower sides near the front end. One-way valves are installed inside the two drain ports (253), and the valves are oriented to open outward and close inward. A dredging plate (256) is fixedly installed at the front end of the second piston rod (255).

6. An electrospinning device according to claim 5, characterized in that: A cleaning groove is provided on the outer side surface of the dredging plate (256), the diameter of the dredging plate (256) is the same as the inner diameter of the spinning nozzle (1) near the front end, the front end of the dredging plate (256) is fixedly connected to a dredging rod (257), the front end of the dredging rod (257) is provided with a guide cone surface, and the diameter of the dredging rod (257) is the same as the inner diameter of the nozzle (12).

7. The spinning process of the electrospinning device according to claim 6, characterized in that: The following steps are involved: S1: Before use, the device can be aligned with the external high-pressure collecting device and connected to the external three-axis displacement device through the base (9) to ensure the freedom of the device. At the same time, the solution content in the liquid storage tank (4) can be ensured to meet the single production requirements. The air inlet pipe (23) is connected to the external air supply device, and the external electrode is connected to the electrode clamp (13) to complete the preparation before spinning. S2: When spinning is performed, the electric telescopic rod (11) can be turned on to push the propulsion plate (7), the first piston rod (6) and the first piston plate (5) forward, thereby applying pressure to the solution in the liquid storage tank (4) to allow it to enter the interior of the spinning nozzle (1). At this time, the solution then enters the interior of the nozzle (12) and is stretched into fibers through the nozzle (12) under the action of the electrodes on the outer side of the electrode clamp (13) and the external high-voltage electric field, thereby completing the spinning process; S3: At the same time, when the solution increases, the solution can enter the interior of the first liquid delivery pipe (17) through the liquid separation valve (14) and apply pressure to the first movable plate (16), so that the first movable plate (16) rises. At this time, the solution can flow back to the interior of the spinning nozzle (1) through the second liquid delivery pipe (18), and when the first movable plate (16) rises, it can drive the movable rod (19) and the second movable plate (22) to rise until the second movable plate (22) is moved to the top of the air inlet pipe (23). At this time, the high-pressure gas then enters the interior of the gas storage pipe (21) through the air inlet pipe (23) and is guided out through the air delivery pipe (24) to act on the interior of the spinning nozzle (1) to complete the auxiliary spinning process; S4: When the gas pressure is insufficient, the first return spring (20) automatically returns to its original position and drives the first movable plate (16) and the second movable plate (22) to move downward. At this time, the input port of the air inlet pipe (23) is closed, and the gas no longer enters the interior of the spinning nozzle (1), completing the automatic closing of the gas-assisted system. S5: When the nozzle (12) is clogged, as the internal pressure of the spinning nozzle (1) increases, the solution applies pressure to the pressure flap valve (3) until the valve of the pressure flap valve (3) is opened, and the solution then enters the temporary storage tube (251) through the liquid inlet (252). At this time, the second piston rod (255) and the dredging plate (256) and the dredging rod (257) move forward until the dredging rod (257) passes through the nozzle (12), and the nozzle (12) can be automatically dredged, and the solution inside the temporary storage tube (251) can be discharged through the drain port (253), completing the reset of the device.

Images