An adjustable electrospinning nozzle device

Abstract

The utility model discloses a adjustable electrostatic spinning nozzle device, especially relates to the field of spinning nozzle, including the inner tube of outer tube and conveying gas, the outer tube is covered in the outside of inner tube, and the solution channel of conveying spinning solution is formed between outer tube and inner tube, and the cleaning mechanism that moves along the extension direction of inner tube is arranged in the solution channel, the outer nozzle pipe of conical is provided in the outer tube end, the inner nozzle pipe of conical is provided in the inside of outer nozzle pipe, and the spinning channel is formed between inner nozzle pipe and outer nozzle pipe, and the inner nozzle pipe is connected in the end of inner tube and moves back and forth in the end of inner tube and adjusts the inner diameter of spinning channel, the utility model discloses the position of inner nozzle pipe is accurately controlled through servo push rod, and the inner diameter of spinning channel is dynamically adjusted, and the different spinning conditions are adapted, and the fiber consistency is promoted, the cleaning mechanism adopts servo drive and bristle design, and the solution residue is automatically removed, reduces the downtime maintenance time, improves production efficiency, promotes the flexibility, stability and production efficiency of electrostatic spinning process.

Description

Technical Field

[0001] This utility model relates to the field of spinning nozzles, and more specifically, to an adjustable electrostatic spinning nozzle device. Background Technology

[0002] Electrospinning is an important method for preparing micro- and nano-sized fibers from polymer solutions or melts using a high-voltage electric field, and it is widely used in biomedicine, filtration materials, energy storage, and other fields. As the core component of electrospinning equipment, the nozzle's structural design directly affects the fiber morphology, diameter uniformity, and production efficiency. Traditional electrospinning nozzles mostly use spinning channels with fixed inner diameters, making it difficult to adapt to spinning solutions of varying viscosities or complex process requirements. For example, high-viscosity solutions easily cause clogging of the spinning channels, requiring frequent shutdowns for cleaning; while low-viscosity solutions struggle to form uniform fibers within a fixed channel, resulting in poor product consistency. Furthermore, existing nozzles lack dynamic adjustment capabilities, failing to optimize the spinning channel inner diameter in real time based on process parameters, thus limiting the precise control of fiber diameter. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an adjustable electrostatic spinning nozzle device, including an outer tube and an inner tube for conveying gas. The outer tube is sleeved outside the inner tube, and a solution channel for conveying spinning solution is formed between the outer tube and the inner tube. A cleaning mechanism that moves along the extension direction of the inner tube is provided in the solution channel. A tapered outer nozzle tube is provided at the end of the outer tube, and a tapered inner nozzle tube is provided inside the outer nozzle tube. A spinning channel is formed between the inner nozzle tube and the outer nozzle tube. The inner nozzle tube is connected to the end of the inner tube and moves back and forth at the end of the inner tube to adjust the inner diameter of the spinning channel.

[0004] In a preferred embodiment, a prism knob is fitted around the outer tube, and threads are formed on the outer wall of the outer tube at the end away from the prism knob and the outer nozzle tube.

[0005] In a preferred embodiment, an internal threaded connector is installed on the inner wall of the outer tube, and a thread matching the internal threaded connector is provided on the outer wall of the inner tube.

[0006] In a preferred embodiment, the cleaning mechanism includes a cleaning rod that passes through the inner thread connecting tube, one end of the cleaning rod extending into the interior of the solution channel and the other end being fitted with a first servo push rod, which is fixed to the inner wall of the outer tube.

[0007] A cleaning ring is installed at the end of the cleaning rod located on one side of the solution channel, and bristles are installed at the edges of both the inner and outer rings of the cleaning ring.

[0008] In a preferred embodiment, a telescopic hose is connected between the inner nozzle pipe and the inner pipe, and the outer diameter of the telescopic hose is smaller than the outer diameter of the inner nozzle pipe.

[0009] In a preferred embodiment, a positioning block is installed on the inner wall of the inner tube, and a through gas passage is opened on the positioning block. A second servo push rod is installed on the outer wall of the positioning block near the inner nozzle tube. The output shaft of the second servo push rod is connected to a connecting rod, which extends into the interior of the inner nozzle tube. Several pressure rods connected to the inner wall of the inner nozzle tube are installed at the end of the connecting rod.

[0010] In a preferred embodiment, a shell inlet pipe communicating with the solution channel is installed on the outer wall of the outer tube.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] This invention uses a servo push rod to precisely control the position of the inner nozzle tube and dynamically adjust the inner diameter of the spinning channel to adapt to different spinning conditions, thereby improving fiber consistency. The cleaning mechanism adopts a servo drive and brush design to automatically remove solution residue, reduce downtime for maintenance, improve production efficiency, and enhance the flexibility, stability, and production efficiency of the electrospinning process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the interior of the outer tube of this utility model;

[0015] Figure 3 This is a schematic diagram of the outer tube and the interior of the inner tube of this utility model.

[0016] Explanation of reference numerals in the attached diagram: 1 Inner tube, 2 Outer tube, 3 Solution channel, 4 Outer nozzle tube, 5 Inner nozzle tube, 6 Spinning channel, 7 Prism knob, 8 Inner thread connecting tube, 9 Cleaning rod, 10 First servo push rod, 11 Cleaning ring, 12 Brush bristles, 13 Telescopic hose, 14 Positioning block, 15 Gas through hole, 16 Second servo push rod, 17 Connecting rod, 18 Pressure rod, 19 Shell inlet tube. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] like Figure 1-3An adjustable electrostatic spinning nozzle device is shown, including an outer tube 2 and an inner tube 1 for conveying gas. The outer tube 2 is sleeved outside the inner tube 1, and a solution channel 3 for conveying spinning solution is formed between the outer tube 2 and the inner tube 1. A cleaning mechanism that moves along the extension direction of the inner tube 1 is provided in the solution channel 3. A tapered outer nozzle tube 4 is provided at the end of the outer tube 2, and a tapered inner nozzle tube 5 is provided inside the outer nozzle tube 4. A spinning channel 6 is formed between the inner nozzle tube 5 and the outer nozzle tube 4. The inner nozzle tube 5 is connected to the end of the inner tube 1 and moves back and forth at the end of the inner tube 1 to adjust the inner diameter of the spinning channel 6.

[0019] Based on the above, the inner nozzle tube 5 moves axially to dynamically adjust the inner diameter of the spinning channel 6, thereby adapting to the viscosity requirements of different spinning solutions and optimizing the fiber diameter. The cleaning mechanism moves back and forth along the solution channel 3 to remove residues and prevent clogging.

[0020] The outer tube 2 is fitted with a prism knob 7, and a thread is provided on the outer wall of the outer tube 2 at the end away from the prism knob 7 and the outer nozzle tube 4.

[0021] Based on the above, the prism knob 7 provides an operation interface for manually rotating the outer tube 2. By engaging with the outer tube 2 through the thread, the position of the outer tube 2 can be adjusted, thereby controlling the initial alignment of the solution channel 3 and the spinning channel 6 and ensuring the stability of the spinning process.

[0022] An internal threaded connecting tube 8 is installed on the inner wall of the outer tube 2, and a thread matching the internal threaded connecting tube 8 is provided on the outer wall of the inner tube 1.

[0023] Based on the above, the inner tube 1 and the outer tube 2 are connected by threads to achieve a tight fit, ensuring the sealing of the solution channel 3, while allowing the inner tube 1 to move axially within the outer tube 2, supporting the dynamic adjustment function of the inner nozzle tube 5.

[0024] The cleaning mechanism includes a cleaning rod 119 that passes through the inner thread connecting tube 8. One end of the cleaning rod 119 extends into the interior of the solution channel 3 and the other end is equipped with a first servo push rod 10. The first servo push rod 10 is fixed on the inner wall of the outer tube 2. A cleaning ring is installed at the end of the cleaning rod 119 located on one side of the solution channel 3. Brush bristles 12 are installed at the edges of both the inner and outer rings of the cleaning ring.

[0025] Based on the above, the first servo push rod 10 drives the cleaning rod 119 to move the cleaning ring back and forth in the solution channel 3, and uses the brush bristles 12 to scrape the inner wall of the channel to remove residual solution or impurities, prevent the channel from being blocked, and ensure continuous production.

[0026] A telescopic hose 13 is connected between the inner nozzle pipe 5 and the inner pipe 1. The outer diameter of the telescopic hose 13 is smaller than the outer diameter of the inner nozzle pipe 5.

[0027] Based on the above, the telescopic hose 13 maintains elastic deformation when the inner nozzle tube 5 moves to compensate for axial displacement, while ensuring the sealing of the gas delivery path to prevent solution leakage or gas escape.

[0028] A positioning block 14 is installed on the inner wall of the inner tube 1. A through gas passage 15 is opened on the positioning block 14. A second servo push rod 16 is installed on the outer wall of the positioning block 14 near the inner nozzle tube 5. The output shaft of the second servo push rod 16 is connected to a connecting rod 17. The connecting rod 17 extends into the interior of the inner nozzle tube 5. Several pressure rods 18 connected to the inner wall of the inner nozzle tube 5 are installed at the end of the connecting rod 17.

[0029] Based on the above, the second servo push rod 16 drives the pressure rod 18 to abut against the inner wall of the inner nozzle tube 5 through the connecting rod 17, precisely controlling its movement distance to achieve fine adjustment of the inner diameter of the spinning channel 6. The gas through hole 15 ensures that the gas is stably delivered to the nozzle area and maintains the uniformity of the spinning electric field.

[0030] The outer wall of the outer tube 2 is equipped with a shell inlet tube 19 that communicates with the solution channel 3;

[0031] Based on the above, the shell inlet pipe 19 allows additional solution to be injected into the solution channel 3, thereby forming core-shell structured or functional composite fibers through co-spinning, expanding the application scope of the device in the preparation of multifunctional nanofibers.

[0032] Furthermore, based on the above, the position of the inner nozzle tube 5 is precisely controlled by the servo push rod, and the inner diameter of the spinning channel 6 is dynamically adjusted to adapt to different spinning conditions, improve fiber consistency, and the cleaning mechanism adopts servo drive and brush 12 design to automatically remove solution residue, reduce downtime maintenance time, improve production efficiency, and enhance the flexibility, stability and production efficiency of the electrospinning process.

[0033] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An adjustable electrostatic spinning nozzle device, comprising an outer tube and an inner tube for conveying gas, the outer tube being sleeved outside the inner tube, and a solution channel for conveying spinning solution being formed between the outer tube and the inner tube, characterized in that, A cleaning mechanism that moves along the extension direction of the inner tube is provided in the solution channel. A tapered outer nozzle is provided at the end of the outer tube. A tapered inner nozzle is provided inside the outer nozzle. A spinning channel is formed between the inner nozzle and the outer nozzle. The inner nozzle is connected to the end of the inner tube and moves back and forth at the end of the inner tube to adjust the inner diameter of the spinning channel.

2. The adjustable electrostatic spinning nozzle device according to claim 1, characterized in that: A prism knob is fitted around the outside of the outer tube, and threads are formed on the outer wall of the outer tube at the end away from the prism knob and the outer nozzle tube.

3. The adjustable electrostatic spinning nozzle device according to claim 2, characterized in that: An internal threaded connector is installed on the inner wall of the outer tube, and a thread matching the internal threaded connector is provided on the outer wall of the inner tube.

4. The adjustable electrostatic spinning nozzle device according to claim 3, characterized in that: The cleaning mechanism includes a cleaning rod that passes through the inner thread connecting tube, one end of the cleaning rod extends into the interior of the solution channel and the other end is equipped with a first servo push rod, which is fixed to the inner wall of the outer tube. A cleaning ring is installed at the end of the cleaning rod located on one side of the solution channel, and bristles are installed on the edges of both the inner and outer rings of the cleaning ring.

5. The adjustable electrostatic spinning nozzle device according to claim 1, characterized in that: A telescopic hose is connected between the inner nozzle pipe and the inner pipe, and the outer diameter of the telescopic hose is smaller than the outer diameter of the inner nozzle pipe.

6. The adjustable electrostatic spinning nozzle device according to claim 1, characterized in that: A positioning block is installed on the inner wall of the inner tube. A through gas passage is opened on the positioning block. A second servo push rod is installed on the outer wall of the positioning block near the inner nozzle tube. The output shaft of the second servo push rod is connected to a connecting rod. The connecting rod extends into the interior of the inner nozzle tube. Several pressure rods connected to the inner wall of the inner nozzle tube are installed at the end of the connecting rod.

7. The adjustable electrostatic spinning nozzle device according to claim 1, characterized in that: A shell inlet pipe communicating with the solution channel is installed on the outer wall of the outer tube.

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