CN219808042U - Electrostatic spinning device - Google Patents

Abstract

The utility model relates to an electrostatic spinning device, which comprises a liquid reservoir, wherein a spinning jet orifice is arranged on the liquid reservoir; a dip tank for holding a dip coating solution; the rotating roller is connected with the first driving device; the motion control device is connected with the autorotation roller and used for controlling the autorotation roller to move along a set track; the scraping plate is rotationally connected with the immersion tank, and is connected with the second driving device, and the second driving device controls the scraping plate to scrape spinning on the autorotation roller. The utility model realizes the intelligent preparation of the electrostatic spinning nanofiber, greatly improves the electrostatic spinning efficiency and saves the labor cost.

Description

An electrospinning device

Technical field

The utility model relates to the technical field of electrospinning, in particular to an electrostatic spinning device.

Background technique

Electrospinning technology is a widely used method for preparing nanofibers. A polymer solution or melt is spray-spun under the action of a strong electric field. The fibers produced have the characteristics of small diameter, large specific surface area and high porosity. They have many properties. Functional and broad application background, it has received widespread attention. However, it is difficult for a single electrospun membrane to meet the needs of all aspects of membranes in a certain field, so the electrospun membrane needs to be modified. Common modification methods include blending, dip coating and hot pressing. The modified fiber membrane is prepared by dipping and hot pressing. It is necessary to manually remove the fiber membrane and put it into the dip coating solution for dip coating, or to put the spun fiber membrane between the hot pressing rollers. During the manual operation process It is easy to damage the electrospun membrane, and the entire process requires manual supervision to remove the membrane and heat press it in time, which has the disadvantage of low production efficiency. In addition, the traditional liquid storage tank only relies on edge spinning, and the small flow of polymer ejected is small, making it difficult to prepare electrospun membranes in batches.

Utility model content

The technical problem to be solved by this utility model is to overcome the deficiencies in the existing technology and provide an electrospinning device, which realizes the intelligent preparation of electrospun nanofibers, greatly improves the efficiency of electrospinning, and also saves money. labor costs.

According to the technical solution provided by the present utility model, the electrospinning device includes a liquid reservoir, which is provided with a spinning nozzle; a liquid immersion tank for placing the dipping solution; and a rotating drum. The drum is connected to the first driving device; a motion control device is connected to the rotation drum and is used to control the movement of the rotation drum along the set trajectory; the scraper is rotatably connected to the immersion tank, and the scraper is rotatably connected to the immersion tank. The scraper is connected to a second driving device, and the second driving device controls the scraper to scrape the spinning fiber on the rotating drum.

In one embodiment of the present invention, the motion control device includes a controller, two turntables and a connecting rod. The two turntables are connected to both ends of the rotation drum through connecting rods. The two turntables pass through The controller drives the rotation.

In one embodiment of the present invention, the connecting rod includes a first connecting rod and a second connecting rod. One end of the first connecting rod is connected to the turntable, and the other end is connected to the second connecting rod. The second connecting rod passes through the rotating drum along the axis of the rotating drum, and the first connecting rod is a telescopic rod.

In one embodiment of the present invention, the rotating drum includes a first drum and a second drum. The first drum and the second drum are both located between the two turntables and connected to the two turntables.

In one embodiment of the present invention, an air flow channel is further included, and the air flow channel surrounds the lower end of the liquid reservoir.

In one embodiment of the present invention, a conveyor belt is connected to the edge of the slot of the immersion tank, and the conveyor belt corresponds to the scraper. A hot pressing roller is provided at one end of the conveyor belt away from the immersion tank.

In one embodiment of the present invention, the heat pressure roller includes a first heat pressure roller and a second heat pressure roller, and the first heat pressure roller and the second heat pressure roller are respectively located on the front and back sides of the conveyor belt. .

In one embodiment of the present invention, the length of the scraper is consistent with the length of the axis of the rotating drum.

In one embodiment of the present invention, the inner diameter of the liquid reservoir gradually decreases along the direction from the liquid storage port to the spinning nozzle.

In one embodiment of the present invention, one side of the scraper is connected to the edge of the slot of the liquid immersion tank through a rotating shaft.

The above technical solution of the present invention has the following advantages compared with the existing technology:

The electrospinning device described in the utility model is equipped with a rotating drum. After the spinning nozzle of the liquid reservoir ejects the spinning yarn, the spinning yarn falls on the rotating drum. The rotating drum is driven by the motion control device between the immersion tank and the storage tank. The reciprocating movement between the liquid containers realizes automatic dipping. The electrospinning device of this utility model is also equipped with a transmission belt and a hot pressing roller. The scraper scrapes the spinning fiber on the automatic roller to the conveyor belt, and then the hot pressing roller performs hot pressing. Automatic hot pressing. During the spinning process, there is no need to turn off the power and manually take out the fiber membrane for dip coating or hot pressing. This realizes the intelligent preparation of electrospun nanofibers, greatly improves the efficiency of electrospinning, and also saves labor. cost, making spinning more intelligent and convenient.

Description of the drawings

In order to make the content of the present utility model easier to understand clearly, the utility model will be further described in detail below based on specific embodiments of the utility model and in conjunction with the accompanying drawings.

Figure 1 is a schematic structural diagram of the electrospinning device of the present invention without the hot pressing device;

Figure 2 is a schematic diagram of the connection between the liquid immersion tank and the hot pressing device of the present invention.

Explanation of reference symbols in the manual: 1-liquid reservoir; 2-air flow channel; 3-turntable; 4-rotating drum; 5-controller; 6-connecting rod; 7-immersion tank; 8-scraper; 9-high pressure Power supply; 10-rotating shaft; 11-conveyor belt; 12-heat pressing roller; 13-heat pressing switch.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and implement it, but the embodiments are not intended to limit the present utility model.

Referring to Figure 1, in order to improve the efficiency of electrospinning and save labor costs, the utility model includes a liquid reservoir 1, which is provided with a spinning nozzle; a liquid immersion tank 7 for placing Dip coating solution; rotation drum 4, the rotation drum 4 is connected to the first driving device; a motion control device, connected to the rotation drum 4, is used to control the movement of the rotation drum 4 along the set trajectory; scraper 8, The scraper 8 is rotatably connected to the immersion tank 7 , and the scraper 8 is connected to a second driving device. The second driving device controls the scraper 8 to scrape the spinning yarn on the rotating drum 4 .

Specifically, during the electrospinning process, a certain amount of spinning liquid is first selectively poured into the liquid reservoir 1, and the inner diameter of the liquid reservoir 1 gradually decreases along the liquid storage port toward the spinning nozzle. small, then turn on the high-voltage power supply 9 for spinning, the edge of the liquid reservoir 1 containing the spinning liquid will spin out continuous silk, the rotating drum 4 first receives the spinning under the spinning nozzle during the spinning process, and then receives When the desired thickness is reached, the rotating drum 4 is transferred to the immersion tank 7 by the motion control device to perform the dip coating process. One side of the scraper 8 is connected to the notch of the immersion tank 7 through the rotating shaft 10. After dipping, the scraper 8 rotates upward through the rotating shaft 10 to offset the rotating drum 4. The length of the scraper 8 is equal to The axis lengths of the rotating drums 4 are consistent, and the fiber film is scraped off the surface of the rotating drum 4 through the rotation of the rotating drum 4, thereby realizing automatic dip coating.

During specific implementation, the first driving device is used to drive the autorotating drum 4 to rotate. When the autorotating drum 4 moves to the first area of the set trajectory, the autorotating drum receives the spinning yarn ejected from the liquid reservoir 1. When the autorotating drum 4 moves to the first area of the set trajectory, When the autorotating drum 4 moves to the second area of the set trajectory, the autorotating drum transfers the spinning fiber to the immersion tank 7. When the autorotating drum 4 moves to the set position, all the spinning drums are controlled. The scraper 8 moves to scrape the spinning yarn on the rotating drum 4.

Further, the motion control device includes a controller 5, two turntables 3 and a connecting rod 6. The two turntables 3 are connected to both ends of the rotation drum 4 through the connecting rods 6. The two turntables 3 pass through The controller 5 drives the rotation.

Specifically, the controller 5 drives the two turntables 3 to rotate, and the rotation direction of the two turntables 3 is consistent with the rotation speed. The rotation drum 4 is connected between the two turntables 3 and makes a circular motion with the rotation of the turntables 3. The first area of the set trajectory of the rotary drum 4 corresponds to the spinning nozzle of the liquid reservoir 1, and the second area of the set trajectory of the autorotating drum 4 corresponds to the immersion tank 7 to achieve the desired results. Automatic dipping required.

Further, the connecting rod 6 includes a first connecting rod 6 and a second connecting rod 6. One end of the first connecting rod 6 is connected to the turntable 3, and the other end is connected to the second connecting rod 6. The second connecting rod 6 passes through the rotating drum 4 along the axis of the rotating drum 4, and the first connecting rod 6 is a telescopic rod.

Specifically, the turntables 3 located on both sides of the rotating drum 4 are provided with first connecting rods 6. The first connecting rods 6 of the two turntables 3 are connected through the second connecting rods 6. The second connecting rods 6 are provided with self-rotating rods 6. Drum 4, when the dip coating is completed, the scraper 8 rotates against the rotating drum 4 to scrape off the spinning yarn. The rotating drum 4 can be extended out of the notch of the immersion tank 7 by adjusting the retractable first connecting rod 6. , so that the spinning fiber is scraped to the desired position.

Further, the rotating drum 4 includes a first drum and a second drum. The first drum and the second drum are both located between the two turntables 3 and connected to the two turntables 3 .

Specifically, the first roller and the second roller can be respectively arranged at the two vertices of the same straight line on the circular motion track of the rotating drum 4. With this structure, one roller can receive the spinning fiber from above during the electrospinning process. , while another roller completes dip coating below, greatly improving the efficiency of spinning and dip coating. Of course, the number and arrangement structure of the rotating drums 4 can also be in other forms, which can be selected according to actual needs and specifically to meet the purpose of automatic dip coating.

Furthermore, it also includes an air flow channel 2 surrounding the lower end of the liquid reservoir 1 .

Specifically, when the high-voltage power supply 9 is turned on for spinning, continuous yarn will be spun from the edge of the liquid reservoir 1 containing the spinning solution, and hot air flow is input into the air flow channel 2. The hot air flow is continuously input from the outside through the air flow channel 2. A certain pressure is generated at the spinning nozzle to promote spinning. During the spinning process, the hot air flow is continuously transported to the spinning nozzle, which increases the pressure at the spinning nozzle. Compared with the ordinary electrospinning device, the filaments ejected are finer, which promotes the spinning process and improves the spinning process. Spinning efficiency.

Further, a conveyor belt 11 is connected to the edge of the liquid immersion tank 7 , and the conveyor belt 11 corresponds to the scraper 8 . A hot pressing roller 12 is provided at one end of the conveyor belt 11 away from the liquid immersion tank 7 .

The heat press roller 12 includes a first heat press roller 12 and a second heat press roller 12 . The first heat press roller 12 and the second heat press roller 12 are respectively located on the front and back sides of the conveyor belt 11 .

Specifically, the heat pressing switch 13 is turned on, and the fiber film scraped off from the automatic roller is transported to between the heat pressing rollers 12 through the transmission belt for heat pressing.

The utility model is equipped with automatic dipping and automatic hot pressing devices. During the spinning process, there is no need to turn off the power and manually take out the fiber membrane for dip coating or hot pressing. This realizes the intelligent preparation of electrospun nanofibers and greatly improves the electrostatic efficiency. The efficiency of spinning also saves labor costs. There are some films that do not require dip coating or hot pressing. If there is no liquid in the immersion tank 7 or no pressure is applied by the hot pressing roller 12, the electrospun film can be selectively controlled and processed.

Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other changes or modifications may be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. The obvious changes or changes derived therefrom are still within the protection scope of the invention.

Claims (10)

1. An electrospinning apparatus, comprising:

the liquid storage device is provided with a spinning jet port;

a dip tank for holding a dip coating solution;

the rotating roller is connected with the first driving device;

the motion control device is connected with the autorotation roller and used for controlling the autorotation roller to move along a set track;

the scraping plate is rotationally connected with the immersion tank, and is connected with the second driving device, and the second driving device controls the scraping plate to scrape spinning on the autorotation roller.

2. The electrospinning apparatus of claim 1, wherein: the motion control device comprises a controller, two turntables and a connecting rod, wherein the two turntables are connected to two ends of the autorotation roller through the connecting rod respectively, and the two turntables are driven to rotate through the controller.

3. The electrospinning apparatus of claim 2, wherein: the connecting rod comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the rotary table, the other end of the first connecting rod is connected with the second connecting rod, the second connecting rod penetrates through the rotating drum along the axis of the rotating drum, and the first connecting rod is a telescopic rod.

4. The electrospinning apparatus of claim 2, wherein: the rotation roller comprises a first roller and a second roller, and the first roller and the second roller are both positioned between the two turntables and connected with the two turntables.

5. The electrospinning apparatus of claim 1, wherein: and the air flow channel surrounds the lower end of the liquid storage device.

6. The electrospinning apparatus of claim 1, wherein: the edge of the notch of the immersion tank is connected with a conveyor belt, the conveyor belt corresponds to the scraping plate, and one end, away from the immersion tank, of the conveyor belt is provided with a hot press roller.

7. The electrospinning apparatus of claim 6, wherein: the hot-pressing roller comprises a first hot-pressing roller and a second hot-pressing roller, and the first hot-pressing roller and the second hot-pressing roller are respectively positioned on the front side and the back side of the conveyor belt.

8. The electrospinning apparatus of claim 1, wherein: the length of the scraping plate is consistent with the axial length of the autorotation roller.

9. The electrospinning apparatus of claim 1, wherein: the inner diameter of the liquid storage device gradually decreases along the direction that the liquid storage port points to the spinning jet port.

10. The electrospinning apparatus of claim 1, wherein: one side of the scraping plate is connected with the edge of the notch of the immersion tank through a rotating shaft.