Electrostatic spinning device with uniform needle electric field intensity

Abstract

The utility model discloses an electrostatic spinning device with uniform needle electric field intensity, and belongs to the technical field of electrostatic spinning. The electrostatic spinning device comprises an electrostatic spinning equipment body, a connecting part and a supporting plate. The electrostatic spinning equipment body is connected with the supporting plates through the connecting parts, the baffles are installed at the bottoms of the two supporting plates, and the baffles and the two supporting plates form a circulation channel. A mounting plate with an air inlet is arranged on one side of the circulation channel, an air supply device is arranged on the mounting plate, and the air supply device drives air to enter the circulation channel from the air inlet, so that the air between the two supporting plates circulates; when the electrostatic spinning equipment body is started for spinning, the air supply device is started at the same time, and air flow between the polar plates is kept to reduce ion concentration, so that an electric field where the needle head is located is uniform. An exhaust air duct is formed between the two supporting plates, air flow between the polar plates is kept so as to reduce ion concentration, and the accuracy of uniform needle electric field intensity during spinning of the electrostatic spinning equipment body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of electrospinning technology, and more specifically, relates to an electrospinning device for uniform needle electric field strength. Background Technology

[0002] Electrospinning is a special form of electrostatic atomization of polymer fluids. In this case, the atomized material is not a tiny droplet, but a polymer microjet that can travel a considerable distance and eventually solidify into fibers.

[0003] Electrospinning is a special fiber manufacturing process in which a polymer solution or melt is jetted into fibers in a strong electric field. Under the action of the electric field, the droplets at the needle tip change from a spherical shape to a conical shape and extend from the tip of the cone to obtain fiber filaments. This method can produce polymer filaments with nanometer-scale diameters.

[0004] Air ionizes in a strong electric field, producing charged ions, which causes fluctuations in the electric field strength and affects the stability of the electrospinning device during operation. In addition, due to deformation caused by its own weight, the electrodes become tilted and non-parallel, resulting in an uneven electric field and affecting the accuracy of the electrospinning device during operation.

[0005] Therefore, it is necessary to provide an electrospinning device that can uniformly distribute the electric field strength at the needle tip to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the shortcomings of related technologies, the purpose of this utility model is to provide an electrospinning device with uniform needle electric field strength, which aims to improve the accuracy of uniform needle electric field strength during electrospinning.

[0007] To achieve the above objectives, this utility model provides an electrospinning device for uniform needle electric field intensity, comprising: an electrospinning equipment body, connecting components, and a support plate; the support plate is provided with an air supply device, a baffle, a mounting plate, a through-hole, an electrode, a mounting shaft, a connector, and a mating joint;

[0008] One side of the electrospinning equipment body is connected to the upper ends of two support plates by two connecting parts. The two support plates are arranged in parallel and spaced at a preset distance. The lower ends of the support plates are placed on the same plane as the electrospinning equipment body.

[0009] A baffle is installed at the bottom between the two support plates, and the baffle and the two support plates form a flow channel; an installation plate with an air inlet is provided on the side of the flow channel away from the electrostatic spinning equipment body, and an air supply device is provided on the side of the air inlet away from the flow channel. The air supply device is used to drive air from the air inlet into the flow channel so that the air between the two support plates can circulate.

[0010] Each of the support plates has a through-hole at its center, a mounting shaft is provided in the through-hole, and an electrode is mounted on the mounting shaft. The two electrode plates are arranged opposite each other and are close to the inner surface of the support plate.

[0011] Connectors are provided on the two electrodes, which are connected to a connector and a charging cable. The electrodes are used to generate an electric field. When the electrospinning equipment body is spinning, the air supply device is used to maintain gas flow between the electrodes to reduce ion concentration and make the electric field at the needle uniform.

[0012] Optionally, the electrospinning device may further include an auxiliary spring and a leveling structure;

[0013] Each of the support plates and electrode sheets is provided with at least one mounting hole, through which a leveling structure is installed;

[0014] The auxiliary spring is sleeved on the outer surface of the mounting shaft located outside the support plate;

[0015] The auxiliary spring, mounting shaft, and leveling structure are used to change the tilt angle of the electrode relative to the vertical plane in order to keep the electrode parallel.

[0016] Optionally, the leveling structure includes an adjusting component and a contact component;

[0017] The adjusting component is fixedly connected to one end of the contact component, and the other end of the contact component is rotatably connected to the electrode plate; the adjusting component passes through the mounting hole to adjust the position of the contact component;

[0018] The adjusting component is a threaded rod or a telescopic rod.

[0019] Optionally, the air supply device includes a fixing component and an air supply component;

[0020] The air supply component is disposed inside the fixed component, and one end of the fixed component is fixedly installed at the air inlet of the mounting plate. The air supply component is used to provide airflow.

[0021] Optionally, the air supply device may further include an interception plate;

[0022] The interceptor disc is located at the end of the fixing component away from the mounting plate to prevent impurities from entering the interior of the fixing component.

[0023] Optionally, each of the support plates is provided with an inwardly recessed mounting opening at the top and a horizontal bottom.

[0024] Two parallel brackets are installed between the bottoms of the two mounting ports. The tops of the parallel brackets are used to install quartz pillars. A reflector is installed at one end of each quartz pillar. A steel ball structure is installed at the bottom of each quartz pillar, and the steel ball structure is located between the two electrode plates.

[0025] The quartz column is used to mount the reflector and the suspended steel ball structure to increase stability.

[0026] Optionally, a fixing plate is also provided on the support plate;

[0027] A support rod is fixedly installed on the fixed plate, and a limit buckle with a fixing bolt is installed on the outer surface of the support rod;

[0028] The limiting buckle is used to support the charging cable;

[0029] The fixing bolt is used to fix the limit buckle after it is adjusted to the corresponding position.

[0030] Optionally, a mounting base is provided on the outer side of one of the support plates, and an operation screen is mounted on the mounting base;

[0031] The operation panel is used to set electric field strength parameters and control the operation of the corresponding equipment; a control box is installed on the outer side of the other support plate, and a door is rotatably connected to the control box.

[0032] The door of the control box is equipped with a lock to protect the power switches and controllers inside the control box.

[0033] Compared with the prior art, the present invention, through the above-described technical solution, aims to improve the accuracy of uniform needle electric field strength during electrospinning by connecting the electrospinning device with connecting components and two support plates. A baffle is installed at the bottom of the two support plates, forming a flow channel between them at the bottom. An installation plate with an air inlet is installed on one side of the two support plates, and an air supply device is installed on the other side. This design forms an exhaust duct between the two support plates. The air supply device drives airflow between the two support plates, maintaining a certain gas flow between the plates to reduce ion concentration and decrease the impact of airborne ions on the electric field strength, thereby improving the accuracy of uniform needle electric field strength during electrospinning. Attached Figure Description

[0034] Figure 1 A schematic diagram of a preferred embodiment of the electrospinning apparatus for uniform needle electric field intensity provided by this utility model;

[0035] Figure 2 This utility model provides a structural schematic diagram of the cabinet door;

[0036] Figure 3 A schematic diagram of the electrode structure is provided for this utility model;

[0037] Figure 4 Provided for this utility model Figure 3 An enlarged view of point A shown;

[0038] Figure 5 Provided for this utility model Figure 3 A magnified view of point B shown.

[0039] The diagram is labeled as follows: 1. Base frame, 2. Support plate, 3. Auxiliary spring, 4. Mounting shaft, 5. Leveling structure, 501. Adjusting component, 502. Contact component, 6. Mounting port, 7. Reflector, 8. Quartz column, 9. Parallel bracket, 10. Fixing plate, 11. Support rod, 12. Fixing bolt, 13. Limit buckle, 14. Operation panel, 15. Mounting base, 16. Mounting plate, 17. Box door, 18. Control box, 19. Mounting bolt, 20. Air supply device, 201. Fixing component, 202. Air supply component, 21. Electrode, 22. Mounting hole, 23. Through hole, 24. Connector, 25. Charging cable, 26. Connector, 27. Baffle, 28. Air inlet, 29. Interception plate, 30. Steel ball structure, 31. Electrostatic spinning equipment body, 32. Connecting component. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] The following description, in conjunction with a preferred embodiment, illustrates the content involved in the above embodiments.

[0042] Example

[0043] like Figures 1-3 As shown, this utility model provides an electrospinning device with uniform needle electric field intensity, including: an electrospinning equipment body 31, a connecting component 32 and a support plate 2; the support plate 2 is provided with an air supply device 20, a baffle 27, a mounting plate 16, a through hole 23, an electrode 21, a mounting shaft 4, a connector 24 and a mating joint 26;

[0044] One side of the electrospinning equipment body 31 is connected to the upper ends of two support plates 2 by two connecting parts 32 respectively. The two support plates 2 are arranged in parallel and spaced apart by a preset distance. The lower ends of the support plates 2 are placed on the same plane as the electrospinning equipment body 31.

[0045] A baffle 27 is installed at the bottom between the two support plates 2, and the baffle 27 and the two support plates 2 form a flow channel; an mounting plate 16 with an air inlet 28 is provided on the side of the flow channel away from the electrostatic spinning equipment body 31, and an air supply device 20 is provided on the side of the air inlet 28 away from the flow channel. The air supply device 20 is used to drive air from the air inlet 28 into the flow channel so that the air between the two support plates 2 can circulate.

[0046] Each of the support plates 2 has a through-hole 23 at its center, and a mounting shaft 4 is provided in the through-hole 23. An electrode 21 is mounted on the mounting shaft 4, and the two electrode 21s are arranged opposite each other and closely attached to the inner surface of the support plate 2.

[0047] Connectors 24 are provided on the two electrodes 21. The connectors 24 are connected to connectors 26, which are connected to charging cables 25. The electrodes 21 are used to generate an electric field. When the electrospinning equipment body 31 is spinning, the air supply device 20 is used to maintain gas flow between the electrodes to reduce the ion concentration so that the electric field at the needle is uniform.

[0048] The working principle of the electrospinning device with uniform needle electric field intensity provided by this utility model is as follows:

[0049] First, the electrospinning equipment body 31 is connected to two support plates 2 via connecting component 32, ensuring that the circuit control lines are identical. Then, a baffle 27 is installed at the bottom of the two support plates 2, creating a flow channel between them at the bottom. Next, mounting plates 16 with air inlets 28 are installed on one side of the two support plates 2 using mounting bolts 19. An air supply device 20 is installed on one side of the mounting plate 16, driving airflow between the two support plates 2 and reducing the impact of airborne ions on the electric field strength. This design creates an exhaust duct between the two support plates 2, maintaining a certain gas flow between the plates to reduce ion concentration and the influence of airborne ions on the electric field strength. This improves the stability of the electric field and enhances the accuracy of uniform needle electric field strength during electrospinning.

[0050] like Figure 3 As shown, optionally, the electrospinning device also includes an auxiliary spring 3 and a leveling structure 5;

[0051] At least one mounting hole 22 is provided on each of the support plates 2 and pole pieces 21, through which the leveling structure 5 is installed;

[0052] The auxiliary spring 3 is sleeved on the outer surface of the mounting shaft 4 located outside the support plate 2;

[0053] The auxiliary spring 3, mounting shaft 4, and leveling structure 5 are used to change the tilt angle of the electrode 21 relative to the vertical plane in order to keep the electrode 21 parallel.

[0054] like Figure 4 As shown, optionally, the leveling structure 5 includes an adjusting component 501 and a contact component 502;

[0055] The adjusting component 501 is fixedly connected to one end of the contact component 502, and the other end of the contact component 502 is rotatably connected to the electrode 21; the adjusting component 501 passes through the mounting hole 22 to adjust the position of the contact component 502.

[0056] The adjusting component 501 is a threaded rod or a telescopic rod.

[0057] like Figure 4 As shown, the contact component 502 and the support plate 2 are threadedly connected. The position of the electrode can be adjusted by rotating the four contact components 502. The adjusting component 501 and the contact component 502 are rotatably connected. Therefore, the electrode 2 will not rotate synchronously during the rotation of the contact component 502.

[0058] Optionally, each of the support plates 2 is provided with an inwardly recessed mounting opening 6 at its top and a horizontal bottom.

[0059] Two parallel brackets 9 are installed between the bottoms of the two mounting ports 6. The top of the parallel brackets 9 is used to install quartz pillars 8. A reflector 7 is installed at one end of the quartz pillars 8. A steel ball structure 30 is installed at the bottom of the quartz pillars 8. The steel ball structure 30 is located between the two electrode plates 21.

[0060] The quartz column 8 is used to mount the reflector 7 and the suspension steel ball structure 30 to increase stability.

[0061] In practical use, the two electrode plates 21 are first installed between the two support plates 2 via the mounting shaft 4, and the two electrode plates 21 are adjusted to a parallel state using two sets of leveling structures 5. Then, the quartz column 8 with a reflector is installed via the parallel bracket 9, and the steel ball structure 30 is installed below the quartz column 8, with the steel ball positioned between the two electrode plates 21. After completion, the connectors 26 of the two charging cables 25 and the connectors 24 on the electrode plates 21 are connected, and the structure between the support plates 2 is activated to improve the accuracy of the uniform needle electric field strength. During this process, the air supply device 20 can be activated at the lower position between the two support plates 2 to increase airflow. The two electrode plates change their tilt angle through the auxiliary spring, mounting shaft, and leveling structure. After deformation due to their own weight, they can still remain parallel through adjustment, thereby improving the accuracy of the uniform needle electric field strength of the electrostatic spinning equipment body during spinning.

[0062] like Figure 5 As shown, optionally, the air supply device 20 includes a fixing component 201 and an air supply component 202;

[0063] The air supply component 202 is disposed inside the fixing component 201. One end of the fixing component 201 is fixedly installed at the air inlet 28 of the mounting plate 16. The air supply component 202 is used to provide airflow.

[0064] Optionally, the air supply device 20 may further include an interception plate 29;

[0065] The interceptor disk 29 is disposed at the end of the fixing component 201 away from the mounting plate 16, and is used to prevent impurities from entering the interior of the fixing component 201.

[0066] The interceptor plate 29 serves a protective function, preventing large impurities from entering the interior of the fixed component 201.

[0067] Optionally, a fixing plate 10 is also provided on the support plate 2;

[0068] A support rod 11 is fixedly installed on the fixed plate 10, and a limiting buckle 13 with a fixing bolt 12 is installed on the outer surface of the support rod 11;

[0069] The limiting buckle 13 is used to support the charging cable 25;

[0070] The fixing bolt 12 is used to fix the limit buckle 13 after it is adjusted to the corresponding position.

[0071] like Figures 1-2 As shown, optionally, an installation base 15 is provided on the outer side of one of the support plates 2, and an operation screen 14 is installed on the installation base 15;

[0072] The operation panel 14 is used to set electric field strength parameters and control the operation of corresponding equipment.

[0073] Another support plate 2 has a control box 18 on its outer side, and a box door 17 is rotatably connected to the control box 18;

[0074] The door 17 is equipped with a lock to protect the power switches and controllers inside the control box 18.

[0075] In this embodiment of the invention, the electrospinning equipment body is connected to two support plates via connecting components. A baffle is installed at the bottom of the two support plates, forming a flow channel between them at the bottom. A mounting plate with an air inlet is installed at one end of the flow channel, and an air supply device is installed on one side of the mounting plate, forming an exhaust duct between the two support plates. The air supply device drives airflow between the two support plates, maintaining a certain gas flow between the electrodes to reduce ion concentration and decrease the impact of airborne ions on the electric field strength. This improves the accuracy of uniform needle electric field strength during electrospinning.

[0076] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrospinning apparatus for uniform needle electric field intensity, characterized in that, include: The electrospinning equipment includes a main body (31), connecting parts (32), and a support plate (2); the support plate (2) is provided with an air supply device (20), a baffle (27), a mounting plate (16), a through-hole (23), an electrode (21), a mounting shaft (4), a connector (24), and a butt joint (26); One side of the electrospinning equipment body (31) is connected to the upper ends of two support plates (2) respectively through two connecting parts (32). The two support plates (2) are arranged in parallel and spaced apart by a preset distance. The lower ends of the support plates (2) are placed on the same plane as the electrospinning equipment body (31). A baffle (27) is installed at the bottom between the two support plates (2), and the baffle (27) and the two support plates (2) form a flow channel; an mounting plate (16) with an air inlet (28) is provided on the side of the flow channel away from the electrostatic spinning equipment body (31), and an air supply device (20) is provided on the side of the air inlet (28) away from the flow channel. The air supply device (20) is used to drive air from the air inlet (28) into the flow channel so that the air between the two support plates (2) can circulate. Each of the support plates (2) has a through-hole (23) at its center, and a mounting shaft (4) is provided in the through-hole (23). An electrode (21) is mounted on the mounting shaft (4), and the two electrode (21) are arranged opposite each other in close contact with the inner surface of the support plate (2). Connectors (24) are provided on the two electrodes (21), the connectors (24) are connected to the connectors (26), the connectors (26) are connected to the charging cable (25), and the electrodes (21) are used to generate an electric field. When the electrospinning equipment body (31) is spinning, the air supply device (20) is used to maintain the gas flow between the electrodes to reduce the ion concentration so that the electric field at the needle is uniform.

2. The electrospinning apparatus as described in claim 1, characterized in that, The electrospinning device also includes an auxiliary spring (3) and a leveling structure (5); At least one mounting hole (22) is provided on each of the support plates (2) and pole pieces (21) for mounting the leveling structure (5) through the mounting holes (22); The auxiliary spring (3) is sleeved on the outer surface of the mounting shaft (4) located outside the support plate (2); The auxiliary spring (3), mounting shaft (4) and leveling structure (5) are used to change the tilt angle of the electrode (21) relative to the vertical plane in order to keep the electrode (21) parallel.

3. The electrospinning apparatus as described in claim 2, characterized in that, The leveling structure (5) includes an adjusting component (501) and a contact component (502); The adjusting component (501) is fixedly connected to one end of the contact component (502), and the other end of the contact component (502) is rotatably connected to the electrode plate (21); the adjusting component (501) passes through the mounting hole (22) to adjust the position of the contact component (502); The adjusting component (501) is a threaded rod or a telescopic rod.

4. The electrospinning apparatus as described in claim 3, characterized in that, The air supply device (20) includes a fixing component (201) and an air supply component (202); The air supply component (202) is disposed inside the fixing component (201), and one end of the fixing component (201) is fixedly installed at the air inlet (28) of the mounting plate (16). The air supply component (202) is used to provide airflow.

5. The electrospinning apparatus as described in claim 4, characterized in that, The air supply device (20) also includes an interception plate (29); The interceptor disc (29) is located at one end of the fixing component (201) away from the mounting plate (16) to prevent impurities from entering the interior of the fixing component (201).

6. The electrospinning apparatus as described in claim 1, characterized in that, Each of the support plates (2) is provided with an inwardly recessed mounting opening (6) at the top and a horizontal bottom; Two parallel brackets (9) are installed between the bottoms of the two mounting ports (6). The top of the parallel brackets (9) is used to install a quartz column (8). A reflector (7) is installed at one end of the quartz column (8). A steel ball structure (30) is installed at the bottom of the quartz column (8). The steel ball structure (30) is located between the two pole pieces (21). The quartz column (8) is used to mount the reflector (7) and the suspension steel ball structure (30) to increase stability.

7. The electrospinning apparatus as described in claim 1, characterized in that, A fixing plate (10) is also provided on the support plate (2); A support rod (11) is fixedly installed on the fixed plate (10), and a limiting buckle (13) with a fixing bolt (12) is installed on the outer surface of the support rod (11); The limiting buckle (13) is used to hold the charging cable (25); The fixing bolt (12) is used to fix the limiting buckle (13) after it is adjusted to the corresponding position.

8. The electrospinning apparatus as described in claim 1, characterized in that, An installation base (15) is provided on the outer side of one of the support plates (2), and an operation screen (14) is installed on the installation base (15); The operation panel (14) is used to set the electric field strength parameters and control the operation of the corresponding equipment; another support plate (2) has a control box (18) on its outer side, and a box door (17) is rotatably connected to the control box (18); The door (17) is equipped with a lock to protect the power switch and controller inside the control box (18).

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