Anti-blocking structure of nozzle of electrostatic spinning device

Abstract

This utility model discloses an anti-clogging structure for the nozzle of an electrostatic spinning device, comprising: a nozzle assembly with a spinning nozzle mounted on its lower side; a receiving device; a solution tray with a storage tank, the solution tray being movable relative to the nozzle assembly and the receiving device; and a lifting drive device, which is connected to the nozzle assembly or the lifting drive device in a transmission manner. During spinning operation, the solution tray is not positioned between the nozzle assembly and the receiving device. When operation stops, the solution tray can be moved between the nozzle assembly and the receiving device. The storage tank of the solution tray stores solution, and the lifting drive device drives the solution tray closer to the nozzle assembly, causing the spinning nozzle to insert into the storage tank. The lower end of the spinning nozzle is immersed in the solution in the storage tank to maintain moisture, thus preventing the residual solution in the spinning nozzle from drying and solidifying, causing clogging, when the equipment is stopped. The structure and operation are simple.

Description

Technical Field

[0001] This utility model relates to the field of electrospinning technology, and in particular to an anti-clogging structure for the nozzle of an electrospinning device. Background Technology

[0002] Electrospinning technology, as a highly efficient method for preparing nanofibers, is widely used in biomedicine, filtration materials, energy storage, and other fields. During electrospinning, a polymer solution forms a jet and deposits to create a nanofiber membrane under a high-voltage electric field. However, when the equipment is shut down, the residual solution inside the nozzle easily dries and solidifies, forming blockages that cause nozzle clogging. When the equipment needs to be restarted, operators must spend time cleaning the nozzle, and may even need to disassemble, clean, or replace it, which not only reduces production efficiency but may also affect spinning quality if not cleaned properly. Furthermore, frequent clogging shortens the nozzle's lifespan and increases maintenance costs. Therefore, those skilled in the art desire a structure that effectively reduces nozzle clogging to minimize downtime and improve production efficiency. Utility Model Content

[0003] The main purpose of this invention is to propose an anti-clogging structure for the nozzle of an electrospinning device, which aims to solve the technical problem in the prior art that the nozzle is easily clogged due to the solidification of the solution when the equipment is stopped.

[0004] To achieve the above objectives, this utility model proposes an anti-clogging structure for the nozzle of an electrostatic spinning device, comprising:

[0005] A nozzle assembly, wherein a spinning nozzle is provided on the lower side of the nozzle assembly;

[0006] A receiving device located below the nozzle assembly;

[0007] A solution tray is provided with a reservoir for storing a solution that keeps the spinning nozzle moist. The solution tray is movable relative to the nozzle assembly and the receiving device. When spinning is in operation, the solution tray is moved away from the nozzle assembly and the receiving device. When spinning is stopped, the solution tray can be moved between the nozzle assembly and the receiving device and the reservoir is positioned directly opposite the spinning nozzle.

[0008] A lifting drive device is provided, which is connected to the nozzle assembly or the lifting drive device in a transmission manner. When spinning is stopped, the lifting drive device can drive the nozzle assembly or the lifting drive device to move up and down, so that the nozzle assembly and the lifting drive device move closer to each other or further away from each other. When the nozzle assembly and the lifting drive device move closer to each other, the spinning nozzle can be inserted into the liquid storage tank.

[0009] During spinning operation, the solution tray is not positioned between the nozzle assembly and the receiving device. The spinning nozzles of the nozzle assembly eject the spinning solution, forming fibers that deposit on the receiving device. When spinning is stopped, the solution tray can be moved between the nozzle assembly and the receiving device. The solution tray stores solution in its reservoir. A lifting drive moves the solution tray closer to the nozzle assembly, inserting the spinning nozzle into the reservoir. The lower end of the spinning nozzle is immersed in the solution in the reservoir to maintain moisture. This prevents residual solution in the spinning nozzle from drying and solidifying, thus avoiding blockages when the equipment is stopped. The structure and operation are simple. When spinning resumes, the lifting drive moves the solution tray away from the nozzle assembly, and then the solution tray is moved out of the space between the nozzle assembly and the receiving device without interfering with spinning.

[0010] Preferably, the lifting drive device is connected to the nozzle assembly in a driving connection. The lifting drive device can drive the nozzle assembly to move up and down, allowing the nozzle assembly to move downwards towards the solution tray or upwards away from the solution tray. In addition, the lifting drive device can also adjust the height of the nozzle assembly relative to the receiving device. The height of the lifting drive device can be adjusted according to the spinning effect during spinning, which simplifies the equipment structure.

[0011] Preferably, the solution tray is detachably connected to the receiving device. During spinning, the solution tray can be removed from the receiving device; when the machine is stopped, the operator can install the solution tray onto the receiving device.

[0012] Preferably, the receiving device includes a receiving frame and a conveyor belt, with the conveying direction of the conveyor belt as the front-to-back direction. Positioning blocks are fixed on both the left and right sides of the conveyor belt on the receiving frame. Positioning holes are provided on the positioning blocks. Support bars are fixed on the lower left and lower right sides of the solution tray. The lower side of the support bar on the left side is inserted into the positioning hole on the left side, and the lower side of the support bar on the right side is inserted into the positioning hole on the right side.

[0013] When installing the solution tray, insert the lower sides of the support bars on the left and right sides of the solution tray into the positioning holes of the positioning blocks on the left and right sides of the receiving frame, with the solution tray spanning across the conveyor belt. When disassembling the solution tray, simply pull up the support bars, which allows for convenient and quick installation and disassembly of the solution tray.

[0014] Preferably, the solution tray is provided with a filling port, which is connected to the storage tank. The nozzle anti-clogging structure also includes a filling pump, which is connected to the filling port via a first pipe. The filling pump can add solution to the storage tank through the filling port. The filling pump is connected to the filling port via the first pipe, allowing for convenient addition of solution to the storage tank.

[0015] Preferably, the receiving device is provided with a weighing element, which is located between the solution tray and the receiving device, and the weighing element is capable of weighing the solution tray.

[0016] The weighing element can weigh the solution tray and the solution in the solution tray. Based on the weight, the height of the solution level in the storage tank can be determined, which makes it easier to understand and control the solution level to maintain a suitable wetting height for the spinning nozzle and to prevent excessive solution from overflowing.

[0017] Preferably, the solution tray is provided with a drain port, the drain port is connected to a second pipe, and the second pipe is provided with a drain switch valve.

[0018] When it is necessary to disassemble the solution tray, first open the drain valve. The solution in the solution tray will be discharged through the drain port and the second pipe. After the solution is basically discharged, disconnect the first and second pipes and then remove the solution tray. This makes it easier to move the solution tray after the solution is discharged, reducing its weight and preventing the solution from spilling. It also allows for better collection and preservation of the solution.

[0019] Preferably, the first pipe is detachably connected to the liquid inlet via a quick connector. This allows for quick and easy connection and disconnection of the first pipe, improving switching efficiency.

[0020] Preferably, the number of nozzle assemblies is multiple sets, which are spaced apart. The solution tray is provided with multiple liquid storage tanks, and the multiple sets of nozzle assemblies are positioned in a one-to-one correspondence with the multiple liquid storage tanks. In this way, multiple sets of nozzle assemblies are used to set up multiple liquid storage tanks, which can all keep the solution moist while reducing the volume of each liquid storage tank and the amount of solution used. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the nozzle assembly and receiving device in the spinning working state of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the nozzle assembly and receiving device in the stopped spinning state, with the solution tray installed in this utility model;

[0024] Figure 3This is a schematic diagram of the solution tray of this utility model;

[0025] Figure 4 This is a front view of the structure of the present invention when the spinning nozzle is not inserted into the liquid storage tank;

[0026] Figure 5 This is a front view of the structure of the spinning nozzle when it is inserted downward into the liquid storage tank in this utility model.

[0027] In the attached diagram: 1-nozzle assembly, 11-spinning nozzle, 2-receiving device, 21-receiving frame, 22-conveyor belt, 23-positioning block, 231-positioning socket, 3-solution tray, 31-storage tank, 32-support bar, 33-liquid inlet, 34-drain outlet, 4-lifting drive device, 51-liquid pump, 52-first pipeline, 53-storage container.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figures 1 to 5As shown, an anti-clogging structure for the nozzle of an electrospinning device includes a nozzle assembly 1, a receiving device 2, a solution tray 3, and a lifting drive device 4.

[0033] A spinning nozzle 11 is provided on the lower side of the nozzle assembly 1, and a receiving device 2 is located below the nozzle assembly 1. During spinning, a spinning electric field is formed between the nozzle assembly 1 and the receiving device 2. The spinning solution is supplied to the spinning nozzle 11 and sprayed out from the lower side to form fibers and deposited on the receiving device 2.

[0034] The solution tray 3 is provided with a reservoir 31 for storing a solution that keeps the spinning nozzle 11 moist. This solution can be the same as the spinning solution. The solution tray 3 can move between the nozzle assembly 1 and the receiving device 2. When spinning is in operation, the solution tray 3 is away from the nozzle assembly 1 and the receiving device 2. When spinning is stopped, the solution tray 3 can move between the nozzle assembly 1 and the receiving device 2 and make the reservoir 31 face the spinning nozzle 11.

[0035] The lifting drive device 4 is connected to the nozzle assembly 1 or the lifting drive device 4 in a transmission connection. When spinning is stopped, the lifting drive device 4 can drive the nozzle assembly 1 or the lifting drive device 4 to move up and down so that the nozzle assembly 1 and the lifting drive device 4 move closer or further apart. When the nozzle assembly 1 and the lifting drive device 4 move closer to each other, the spinning nozzle 11 can be inserted into the liquid storage tank 31.

[0036] During the spinning process, refer to Figure 1 The solution tray 3 is not positioned between the nozzle assembly 1 and the receiving device 2. The spinning nozzle 11 of the nozzle assembly 1 sprays the spinning solution and forms fibers that deposit on the receiving device 2. When operation stops, i.e., in the stopped spinning state, the solution tray 3 can be moved between the nozzle assembly 1 and the receiving device 2, as shown in the figure. Figure 2 and Figure 4 The solution is stored in the storage tank 31 of the solution tray 3. The lifting drive device 4 drives the solution tray 3 to approach the nozzle assembly 1, so that the spinning nozzle 11 is inserted into the storage tank 31. (Refer to...) Figure 5 The lower end of the spinning nozzle 11 is immersed in the solution in the liquid storage tank 31 to keep it moist, so that the residual solution in the spinning nozzle 11 will not dry and solidify and cause blockage when the equipment is stopped. The structure and operation are simple. When spinning is started again, the lifting drive device 4 drives the solution tray 3 away from the nozzle assembly 1, and then moves the solution tray 3 out of the space between the nozzle assembly 1 and the receiving device 2 without interfering with the spinning operation.

[0037] In some specific embodiments, the lifting drive device 4 is connected to the nozzle assembly 1 via a transmission connection. The lifting drive device 4 can drive the nozzle assembly 1 to move up and down, allowing the nozzle assembly 1 to move downwards towards the solution tray 3 or upwards away from the solution tray 3. Additionally, the lifting drive device 4 can adjust the height of the nozzle assembly 1 relative to the receiving device 2. The height of the lifting drive device 4 can be adjusted according to the spinning effect during spinning, simplifying the equipment structure. The lifting drive device 4 can be a lead screw motion module, a gear and rack motion module, etc.

[0038] In some embodiments, the solution tray 3 is detachably connected to the receiving device 2. During spinning, the solution tray 3 can be removed from the receiving device 2; when the machine is stopped, the operator can install the solution tray 3 onto the receiving device 2. In other embodiments, a moving drive device can be provided to move the solution tray 3 between the nozzle assembly 1 and the receiving device 2 or remove it.

[0039] Furthermore, the receiving device 2 includes a receiving frame 21 and a conveyor belt 22. With the conveying direction of the conveyor belt 22 as the front-to-back direction, the conveyor belt 22 is mounted on the receiving frame 21 via a drive roller and a driven roller and is driven by a motor. The structure of the receiving device 2 is existing technology and will not be described in detail here. Positioning blocks 23 are fixed on both the left and right sides of the conveyor belt 22 on the receiving frame 21. Positioning blocks 23 are provided with positioning holes 231. Support bars 32 are fixed on the lower left and lower right sides of the solution tray 3. (Refer to...) Figure 3 The lower side of the support bar 32 on the left is inserted into the positioning hole 231 on the left, and the lower side of the support bar 32 on the right is inserted into the positioning hole 231 on the right.

[0040] When installing the solution tray 3, the lower sides of the support bars 32 on both the left and right sides of the solution tray 3 are inserted into the positioning holes 231 of the positioning blocks 23 on both the left and right sides of the receiving frame 21, respectively, with the solution tray 3 spanning across the conveyor belt 22. When disassembling the solution tray 3, simply pull up the support bars 32, allowing for convenient and quick installation and disassembly of the solution tray 3. In some embodiments, the solution tray 3 and the receiving frame 21 can also be connected by other detachable structures.

[0041] In some specific embodiments, the solution tray 3 is provided with a filling port 33, which is connected to the storage tank 31. The nozzle anti-clogging structure also includes a filling pump 51 and a storage container 53. The storage container 53 can store solution. The filling pump 51 is connected to the filling port 33 through a first pipe 52. The filling pump 51 can add solution from the storage container 53 to the storage tank 31 through the filling port 33. The filling pump 51 is connected to the filling port 33 through the first pipe 52, and solution can be conveniently added to the storage tank 31 by the filling pump 51.

[0042] Furthermore, the receiving device 2 is equipped with a weighing element, which is located between the solution tray 3 and the receiving device 2, and the weighing element is capable of weighing the solution tray 3.

[0043] The weighing element can weigh the solution tray 3 and the solution in the solution tray 3. Based on the weight, the height of the solution level in the liquid storage tank 31 can be determined, which makes it easier to understand and control the height of the solution level in order to maintain a suitable immersion height for the spinning nozzle 11 and to prevent excessive solution from overflowing.

[0044] Furthermore, the solution tray 3 is provided with a drain port 34, which is connected to a second pipe, and the second pipe is provided with a drain switch valve.

[0045] When it is necessary to disassemble the solution tray 3, first open the drain valve. The solution in the solution tray 3 will drain out through the drain port 34 and the second pipe. After the solution is basically drained, disconnect the first pipe 52 and the second pipe, and then remove the solution tray 3. This makes it easier to move the solution tray 3 after draining the solution, reducing its weight and preventing spillage. It also allows for better collection and preservation of the solution. Preferably, the drain port 34 and the filling port 33 are the same port, and the first pipe 52 and the second pipe are the same pipe, which simplifies the structure.

[0046] Furthermore, the first pipe 52 and the liquid inlet 33 are detachably connected via a quick connector. This allows for quick and easy connection and disconnection of the first pipe 52, improving switching efficiency.

[0047] In some specific embodiments, there are multiple sets of nozzle assemblies 1, which are spaced apart. The solution tray 3 is provided with multiple liquid storage tanks 31, and the positions of the multiple sets of nozzle assemblies 1 and the multiple liquid storage tanks 31 are arranged one-to-one. In this way, by setting multiple liquid storage tanks 31 according to multiple sets of nozzle assemblies 1, all sets of nozzle assemblies 1 can keep the solution moist, and the volume of each liquid storage tank 31 and the amount of solution used can be reduced.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A nozzle anti-clogging structure for an electrospinning device, characterized in that, include Spinneret assembly (1), wherein a spinning nozzle (11) is provided on the lower side of the nozzle assembly (1). A receiving device (2) is located below the nozzle assembly (1); A solution tray (3) is provided with a reservoir (31) for storing a solution to keep the spinning nozzle (11) moist. The solution tray (3) is movable relative to the nozzle assembly (1) and the receiving device (2). When spinning is in operation, the solution tray (3) is away from the nozzle assembly (1) and the receiving device (2). When spinning is stopped, the solution tray (3) can be moved between the nozzle assembly (1) and the receiving device (2) and the reservoir (31) is facing the spinning nozzle (11). A lifting drive device (4) is connected to the nozzle assembly (1) or the lifting drive device (4) in a transmission manner. When spinning is stopped, the lifting drive device (4) can drive the nozzle assembly (1) or the lifting drive device (4) to move up and down so that the nozzle assembly (1) and the lifting drive device (4) move closer to each other or further away from each other. When the nozzle assembly (1) and the lifting drive device (4) move closer to each other, the spinning nozzle (11) can be inserted into the liquid storage tank (31).

2. The nozzle anti-clogging structure as described in claim 1, characterized in that, The lifting drive device (4) is connected to the nozzle assembly (1) via a transmission.

3. The nozzle anti-clogging structure as described in claim 2, characterized in that, The solution tray (3) is detachably connected to the receiving device (2).

4. The nozzle anti-clogging structure as described in claim 3, characterized in that, The receiving device (2) includes a receiving frame (21) and a conveyor belt (22). With the conveying direction of the conveyor belt (22) as the front-back direction, the receiving frame (21) is fixed with positioning blocks (23) on both the left and right sides of the conveyor belt (22). The positioning blocks (23) are provided with positioning holes (231). The lower left and lower right sides of the solution tray (3) are fixed with support bars (32). The lower side of the support bar (32) on the left side is inserted into the positioning hole (231) on the left side, and the lower side of the support bar (32) on the right side is inserted into the positioning hole (231) on the right side.

5. The nozzle anti-clogging structure as described in claim 3, characterized in that, The solution tray (3) is provided with a liquid inlet (33), which is connected to the liquid storage tank (31). The nozzle anti-clogging structure also includes a liquid pump (51), which is connected to the liquid inlet (33) through a first pipe (52). The liquid pump (51) can add solution to the liquid storage tank (31) through the liquid inlet (33).

6. The nozzle anti-clogging structure as described in claim 5, characterized in that, The receiving device (2) is equipped with a weighing element, which is located between the solution tray (3) and the receiving device (2). The weighing element is capable of weighing the solution tray (3).

7. The nozzle anti-clogging structure as described in claim 5, characterized in that, The solution tray (3) is provided with a drain port (34), and the drain port (34) is connected to a second pipe, which is provided with a drain switch valve.

8. The nozzle anti-clogging structure as described in claim 5, characterized in that, The first pipe (52) and the liquid inlet (33) are detachably connected via a quick connector.

9. The nozzle anti-clogging structure as described in claim 1, characterized in that, The number of nozzle assemblies (1) is multiple sets, and the multiple sets of nozzle assemblies (1) are arranged at intervals. The solution tray (3) is provided with multiple liquid storage tanks (31), and the multiple sets of nozzle assemblies (1) are arranged in a one-to-one correspondence with the multiple liquid storage tanks (31).

Images