Spinning solution constant temperature device under high-voltage electrostatic field

Abstract

The utility model provides a spinning solution constant-temperature device under a high-voltage electrostatic field. The spinning solution constant-temperature device comprises an insulating liquid storage tank, the heat conduction tank is arranged in the insulating liquid storage tank and is used for accommodating a spinning solution; the heat exchange tube is arranged in the insulating liquid storage tank; and a liquid processing mechanism. The two ends, in the axial direction of the heat exchange pipe, of the heat exchange pipe are open, and the openings are exposed out of the side wall of the insulating liquid storage tank. The liquid treatment mechanism is communicated with openings in the two ends of the heat exchange pipe through insulating pipelines to form a circulation loop; a non-conductive heat exchange medium circulates in the circulation loop; a heat transfer medium is accommodated in the insulating liquid storage tank; the liquid treatment mechanism is configured to be used for adjusting the temperature of the non-conductive heat exchange medium and driving the non-conductive heat exchange medium to flow in the circulation loop. The constant temperature device can realize effective constant temperature of the electrostatic spinning solution.

Description

Technical Field

[0001] This utility model relates to the field of electrospinning technology. More specifically, it relates to a device for maintaining a constant temperature of spinning solution under a high-voltage electrostatic field. Background Technology

[0002] Electrospinning, as an emerging materials processing technology, produces nanofibers with advantages such as fine microstructure, large specific surface area, high porosity, and small pore diameter, which can be applied in various fields such as material filtration, aerospace, energy batteries, biomedicine, and tissue engineering. However, in its process scale-up, needle-free spinning is usually adopted. High-temperature isothermal control of water-based solutions, such as gelatin, collagen, silk fibroin, and polyvinyl alcohol, is beneficial to improving spinning efficiency and maintaining spinning stability; low-temperature isothermal control of organic solvent systems, such as polycaprolactone with dichloromethane and polylactic acid with tetrahydrofuran, is beneficial to controlling the volatilization of organic solvents, thereby achieving efficient and continuous industrial processing of the system.

[0003] Numerous researchers have conducted continuous studies on temperature control in electrospinning solution systems. The basic requirements for the system are: 1) good heat exchange efficiency to effectively achieve uniform and constant temperature of the spinning solution at low or high temperatures; 2) avoidance of high-voltage electrostatic interference, high-voltage electrostatic breakdown, and high-voltage electrostatic transfer. This is because such phenomena can lead to preparation risks, such as machine damage and personnel injury; and they can also affect the stable control of the spinning solution temperature. An early approach involved drilling a hole in the bottom of a non-metallic bath containing the spinning solution with a long-distance drill bit to introduce heated or cooled silicone oil for heat transfer circulation. While this method minimized interference from high-voltage electrostatics on the temperature control circulation, the low heat exchange efficiency of non-metallic baths (usually made of PE, PP, or PTFE) prevented the spinning solution from reaching the expected high temperature or the set low temperature. Therefore, researchers proposed using a glass or ceramic heat exchange bath, stacked with a stainless steel bath of the same curvature for temperature control. This method solved the heat exchange efficiency problem to some extent. However, it also has three specific problems: 1. Regarding the temperature control medium, if water-based media are used, although ceramics and glass have insulating properties, there is still a risk of being broken down by high-voltage electrostatic discharge, leading to system insecurity; 2. Glass and ceramic heat exchange tanks are easily broken during the process of being in close contact with the stainless steel liquid tank or during cleaning, causing interruptions in the preparation process; 3. Although the curvature of the ceramic / glass heat exchange tank and the stainless steel liquid tank should be as consistent as possible, it is virtually impossible to achieve a perfect fit during processing, which leads to uneven heat exchange and further causes inconsistent overall solution temperatures. To address these problems, researchers proposed using thermally conductive foamed copper as the heat exchange medium between the glass / ceramic heat exchange tank and the stainless steel liquid tank. The loose foamed copper strengthens the heat exchange connection between the glass / ceramic heat exchange tank and the stainless steel liquid tank to some extent, but it still cannot solve the problem of uniform heat exchange. This is because the degree of misfit between the two tanks changes with the increase or decrease of temperature, so the problem of uneven heat exchange remains unresolved. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a spinning solution temperature control device under a high-voltage electrostatic field to achieve effective temperature control of the electrospinning solution.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a constant temperature device for spinning solution under a high voltage electrostatic field, comprising:

[0007] Insulating liquid storage tank; heat-conducting tank disposed within the insulating liquid storage tank for containing spinning solution; heat exchange tube disposed within the insulating liquid storage tank; and liquid handling mechanism;

[0008] The heat exchange tube has openings at both ends along its own axial direction, and the openings are exposed by the sidewall of the insulating liquid storage tank; the liquid handling mechanism is connected to the openings at both ends of the heat exchange tube through an insulating pipeline to form a circulation loop; a non-conductive heat exchange medium flows in the circulation loop; the insulating liquid storage tank contains a heat transfer medium; the liquid handling mechanism is configured to regulate the temperature of the non-conductive heat exchange medium and drive the non-conductive heat exchange medium to flow in the circulation loop.

[0009] A preferred embodiment is that the non-conductive heat exchange medium includes one or more liquids selected from methanol, ethanol, ethylene glycol, glycerol, silicone oil, and ethyl acetate.

[0010] A preferred embodiment is that the heat transfer medium is water or salt water.

[0011] The preferred embodiment is that the insulating conduit is one of silicone tubing, PE tubing, PU tubing, PP tubing, PA tubing, or PVC tubing.

[0012] The preferred embodiment is that the insulating liquid storage tank is made of one of the following materials: polyethylene, polypropylene, polyester, polytetrafluoroethylene, plexiglass, polyvinyl chloride, and nylon.

[0013] A preferred embodiment is that the liquid handling mechanism includes a temperature controller for regulating the temperature of the non-conductive heat exchange medium, a liquid delivery pump for driving the non-conductive heat exchange medium to flow in the circulation loop, and a flow guide valve for controlling the flow direction and flow rate of the non-conductive heat exchange medium.

[0014] A preferred embodiment is that the surface of the heat-conducting groove that comes into contact with the heat transfer medium is an arc surface.

[0015] A preferred embodiment is that the insulating liquid storage tank is provided with a number of heat exchange tubes, and the insulating pipeline is connected to the two ends of each heat exchange tube through an insulating shunt pipe.

[0016] A preferred embodiment is that the insulating liquid storage tank is covered with a cover plate, the cover plate is made of transparent material, and the lower surface of the cover plate is in close contact with the opening of the heat conduction tank; the cover plate has an exhaust and liquid filling hole and a cap that cooperates with the exhaust and liquid filling hole.

[0017] The preferred embodiment is that the cover plate is fixed to the insulating liquid storage tank with screws made of PE material.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention establishes a circulation loop by connecting a liquid handling mechanism to the open ends of a heat exchange tube via an insulated pipe. A non-conductive heat exchange medium is added to this loop, while a heat transfer medium is added to an insulated storage tank. The liquid handling mechanism regulates the temperature of the non-conductive heat exchange medium in real time, achieving excellent heat exchange efficiency and ensuring a uniform and constant temperature of the spinning solution under both low and high temperature conditions. Furthermore, this invention enables needle-free electrospinning under high-voltage electrostatic conditions, effectively maintaining the temperature of the electrospinning solution and preventing temperature control failures caused by high-voltage electrostatic interference, high-voltage electrostatic breakdown, or high-voltage electrostatic transfer. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the constant temperature device of this utility model.

[0022] Figure 2 This is one of the cross-sectional schematic diagrams of the heat exchange mechanism of this utility model.

[0023] Figure 3 This is the second cross-sectional schematic diagram of the heat exchange mechanism of this utility model.

[0024] Reference numerals: 100, Liquid handling mechanism; 1, Temperature controller; 2, Non-conductive heat exchange medium; 3, Flow guide valve; 4, Liquid transfer pump; 5, Insulated pipeline; 6, Insulated liquid storage tank; 7, Heat transfer medium; 8, Spinning solution; 9, Heat conduction tank; 10, Cover plate; 11, Exhaust and liquid inlet port; 12, Hole cover; 13, Heat exchange tube; 14, Insulated diversion valve; 15, Insulated diversion pipe. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0027] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0030] To address the challenge of achieving effective temperature control of electrospinning solutions using existing devices, this invention provides a temperature control device for electrospinning solutions under a high-voltage electrostatic field. This device is used to achieve effective temperature control (thermal or cooling) of the electrospinning solution, combined with... Figures 1 to 3 As shown, the specific high-voltage electrostatic field constant temperature device for the spinning solution includes a heat exchange mechanism and a liquid handling mechanism 100. The heat exchange mechanism is used for heat exchange between the spinning solution and the heat exchange medium. This mechanism includes an insulating liquid storage tank 6, a heat-conducting tank 9 disposed within the insulating liquid storage tank 6 to contain the spinning solution 8, and a heat exchange tube 13 disposed within the insulating liquid storage tank 6. Both ends of the heat exchange tube 13 are open along its axial direction, and the openings are exposed by the two opposite sidewalls of the insulating liquid storage tank 6. The inner and outer walls of the heat exchange tube 13 are finely processed to present a smooth surface. Its shape can be designed as linear, serpentine, rectangular, or arc-shaped to allow for flexible placement within the insulating liquid storage tank 6. The heat-conducting tank 9 and the heat exchange tube 13 are preferably made of stainless steel. As the key medium for heat transfer between the non-conductive heat exchange medium 2 and the heat transfer medium 7, the heat exchange tube 13, thanks to the excellent thermal conductivity of stainless steel, achieves efficient and stable heat transfer, ensuring the smooth operation of the entire heat exchange process.

[0031] Furthermore, the liquid handling mechanism 100 is connected to the heat exchange tube 13 through an insulating pipe 5, forming a circulation loop; a non-conductive heat exchange medium 2 flows within the circulation loop; and a heat transfer medium 7 is placed within the insulating liquid storage tank 6. Both the non-conductive heat exchange medium 2 and the heat transfer medium 7 are liquids. The liquid handling mechanism 100 is configured to regulate the temperature of the non-conductive heat exchange medium 2 and drive it to flow in the circulation loop. The constant temperature operation of this thermostatic device is as follows: the external liquid handling mechanism 100, which has both cooling and heating functions, heats or cools the non-conductive heat exchange medium 2 in the circulation loop. The liquid handling mechanism 100 is connected to the heat exchange tube 13 through the insulating pipe 5 to achieve primary heat exchange by transferring or transferring heat. The heat exchange tube 13 is fixed in the insulating liquid storage tank 6 and immersed in the heat transfer medium 7, performing secondary heat exchange with the heat transfer medium 7 in the insulating liquid storage tank 6, thereby raising or lowering the temperature of the heat transfer medium 7 in the insulating liquid storage tank 6. The heat transfer medium 7 in the insulating storage tank 6 further transfers heat to or from the spinning solution 8 through the heat conduction tank 9, thus completing a three-stage heat exchange. Through these three heat transfers, the temperature of the electrospinning solution can be kept constant under high or low temperature conditions, avoiding temperature control failures caused by high-voltage electrostatic interference, high-voltage electrostatic breakdown, and high-voltage electrostatic transfer. The temperature control device provided by this invention, designed for needleless electrospinning processes under high-voltage electrostatics, ensures that the spinning solution maintains a constant temperature under both low and high temperature conditions, and fundamentally avoids temperature control failures caused by high-voltage electrostatic interference, high-voltage electrostatic breakdown, and high-voltage electrostatic transfer. This provides reliable technical support for the stable operation and high-quality production of needleless electrospinning processes under high-voltage electrostatics.

[0032] In the above embodiments, the non-conductive heat exchange medium 2 includes one or more liquids selected from methanol, ethanol, ethylene glycol, glycerol, silicone oil, and ethyl acetate. These media all possess excellent non-conductive and thermal conductivity properties, enabling efficient heat transfer while ensuring safe operation of the device, thus meeting temperature control requirements under different operating conditions.

[0033] The heat transfer medium 7 is water or brine. The constant temperature range of the heat transfer medium 7 is -23 to 95℃. The water-based heat transfer medium 7 not only ensures efficient heat transfer but also offers the advantage of easy cleaning. This greatly facilitates daily maintenance and cleaning in industrial production processes for the frequently used heat transfer tank 9, effectively improving production efficiency. The insulating pipe 5 is one of silicone, PE, PU, ​​PP, PA, or PVC pipes. The insulating liquid storage tank 6 is made of one of polyethylene, polypropylene, polyester, polytetrafluoroethylene, plexiglass, polyvinyl chloride, or nylon. The insulating liquid storage tank 6 is integrally machined using a lathe and milling machine, avoiding the risk of high-voltage electrostatic breakdown caused by gaps in splicing and bonding. The insulating liquid storage tank 6 is mainly used to hold the heat transfer medium 7. While ensuring effective directional heat transfer, its insulating material properties effectively prevent the conduction or breakdown of high-voltage static electricity, thereby preventing damage to other components and ensuring the safety and stability of the entire system.

[0034] In one specific embodiment, the liquid processing mechanism 100 includes a temperature controller 1 for regulating the temperature of the non-conductive heat exchange medium 2, a liquid delivery pump 4 for driving the non-conductive heat exchange medium 2 to flow in a circulation loop, and a flow guide valve 3 for controlling the flow direction and flow rate of the non-conductive heat exchange medium 2. This liquid processing mechanism 100 can heat or cool the non-conductive heat exchange medium 2, thereby achieving temperature regulation. Two flow guide valves 3 are connected from the temperature controller 1 for inlet and outlet of the non-conductive heat exchange medium 2. The temperature controller 1 has both cooling and heating functions to regulate the temperature of the non-conductive heat exchange medium 2 entering it, with a temperature control range between -25°C and 100°C. Specifically, the temperature controller 1 can precisely heat or cool the liquid according to actual needs, thereby achieving effective processing of the non-conductive heat exchange medium 2. The temperature of the non-conductive heat exchange medium 2 can be precisely controlled within the range of -25°C to 100°C, meeting the temperature control requirements of different spinning solutions. The liquid transfer pump 4 serves as the power output for introducing and exporting the non-conductive heat exchange medium 2 to the thermostat 1, and as the power source for the circulation of the non-conductive heat exchange medium 2 throughout the entire circulation loop. Its liquid transfer speed is 1 to 10 kg / min, which can ensure the efficient transfer of the non-conductive heat exchange medium 2 between the thermostat 1 and other components, providing a solid power guarantee for the stable operation of the entire circulation loop.

[0035] This invention establishes a primary heat exchange circulation loop by assembling a thermostat 1, a liquid transfer pump 4, an insulated pipeline 5, and a heat exchange tube 13. A non-conductive heat exchange medium 2 is used as the medium flowing through the loop, achieving effective heat transfer to the heat exchange tube 13. Furthermore, the insulated pipeline 5, the insulated shunt pipe 15, and the non-conductive heat exchange medium 2 prevent the influence of high-voltage static electricity on the external thermostat 1 and the high-speed liquid transfer pump 4, which have both cooling and heating functions. This invention also employs an insulated liquid storage tank 6, a stainless steel heat exchange tube 13, a stainless steel heat conduction tank 9, and a heat transfer medium 7 to form a secondary heat exchange system. The insulated liquid storage tank 6 further eliminates high-voltage static electricity interference and breakdown. The excellent thermal conductivity and effective encapsulation of the water-based system ensure both overall temperature uniformity and stability, as well as the high efficiency, uniformity, and integrity of the stainless steel heat exchange. The heat transfer medium 7 uses water or brine, which improves heat transfer performance and facilitates heat transfer between the heat exchange tube 13 and the heat conduction groove 9. Its low viscosity helps to coat the heat exchange surfaces of both the heat exchange tube 13 and the heat conduction groove 9, preventing the formation of air bubbles and promoting uniform heat transfer. Furthermore, low viscosity means less adhesion, which is more convenient for the heat conduction groove 9, which requires frequent cleaning and maintenance. This invention uses a stainless steel heat conduction groove 9, which serves as the spinning solution container, forming a three-stage heat exchange system with the spinning solution 8. By utilizing the high efficiency of stainless steel heat exchange and maximizing the heat exchange area of ​​the heat conduction groove 9, the effective, uniform, and overall temperature maintenance of the spinning solution 8 is ensured.

[0036] Furthermore, in one specific embodiment, the surface of the heat-conducting groove 9 that contacts the heat transfer medium 7 in the insulating liquid storage tank 6 is an arc surface. This arc surface convexes downwards, maximizing the contact area between the entire arc surface and the heat transfer medium 7. The heat-conducting groove 9 is elongated, with both end faces along its length being flat, and an arc-shaped sidewall between the two end faces. Both the inner and outer surfaces of the heat-conducting groove 9 are smooth. The length of the heat-conducting groove 9 is ≤1.8m; the width is ≤30cm. Its elongated shape ensures sufficient spinning heads can be arranged in the heat-conducting groove 9, meeting the needs of industrial production. The arc-shaped sidewall maximizes the efficiency of heat introduction or export, achieving efficient heat conduction. The constant temperature range of the heat-conducting groove 9 is -20 to 85℃, and the temperature difference between the two ends along the length of the groove is ±1℃, ensuring that the spinning solution remains in a uniform and stable temperature environment throughout the entire groove.

[0037] In one specific embodiment, an insulating liquid storage tank 6 is provided with a plurality of heat exchange tubes 13. The insulating pipeline 5 is connected to the two ends of each heat exchange tube 13 through an insulating diversion pipe 15, and an insulating diversion valve 14 is provided on the insulating diversion pipe 15. All heat exchange tubes 13 are connected in parallel. The non-conductive heat exchange medium 2 is transferred between the liquid handling mechanism 100 and the heat exchange tubes 13 using the insulating pipeline 5 and the insulating diversion pipe 15. The insulating diversion pipe 15, in conjunction with the insulating diversion valve 14, enables multiple non-conductive heat exchange media 2 to enter and exit in different heat exchange tubes 13. The insulating diversion pipe 15 and the insulating diversion valve 14 can be made of one of the following materials: polyethylene, polypropylene, polyester, polytetrafluoroethylene, polyvinyl chloride, or nylon. The bridging of the insulating pipeline 5, the insulating diversion pipe 15, and the non-conductive heat exchange medium 2 blocks the influence of high-voltage static electricity on the liquid handling mechanism 100 and the liquid transfer pump 4, effectively ensuring the safe and stable operation of the device. The stainless steel heat exchange tube 13 serves as the medium for heat transfer between the non-conductive heat transfer medium 2 and the heat transfer medium 7, ensuring efficient heat transfer. The insulated storage tank 6, as the container for the heat transfer medium 7, effectively ensures directional heat transfer while its insulating properties prevent damage to other components caused by high-voltage static electricity conduction or breakdown. The stainless steel heat exchange tank 9 serves as the medium for heat transfer between the heat transfer medium 7 and the spinning solution 8, ensuring efficient heat conduction. The insulated pipe 5 and the insulated shunt pipe 15 together undertake the task of transferring the non-conductive heat transfer medium 2 between the temperature controller 1 and the heat exchange tube 13.

[0038] In one specific embodiment, a cover plate 10 is provided on the insulating liquid storage tank 6. The cover plate 10 is made of transparent material, specifically an acrylic sheet. The lower side of the cover plate 10 is in close contact with the opening of the heat transfer groove 9. The cover plate 10 has an exhaust and liquid filling hole 11 and a cap 12 that mates with the exhaust and liquid filling hole 11. The exhaust and liquid filling hole 11 and the cap 12 can promptly replenish the heat transfer medium 7 lost due to evaporation, avoiding temperature control failure caused by different amounts of heat transfer medium 7 added. Furthermore, the cover plate 10 is fixed to the insulating liquid storage tank 6 with screws made of PE material to prevent high voltage static electricity from forming a discharge circuit with the screws. This arrangement ensures that the cover plate 10 is in close contact with both the heat transfer groove 9 and the insulating liquid storage tank 6, minimizing the evaporation of the heat transfer medium and effectively reducing heat loss and temperature fluctuations caused by medium evaporation. On the other hand, the transparent cover plate 10 allows operators to observe the interface changes of the heat transfer medium, thereby achieving precise monitoring of the heat transfer process and accurate temperature control. Furthermore, the exhaust and liquid inlet holes 11 machined on the cover plate 10 not only facilitate the replenishment of the heat transfer medium 7, ensuring timely replenishment after medium evaporation loss and maintaining normal system operation, but also provide an exhaust channel for the gas generated by the evaporation of the heat transfer medium 7, effectively preventing serious safety accidents such as deformation, rupture, or even explosion of the insulating liquid storage tank 6 due to excessive internal pressure. This high-voltage electrostatic constant temperature device can effectively maintain the spinning solution 8 at high or low temperatures while avoiding the influence of high-voltage electrostatics, thus achieving continuous and stable needle-free electrospinning. This is of great significance for ensuring the industrial implementation of electrospinning technology in material preparation.

[0039] In summary, this invention achieves excellent heat exchange efficiency by connecting the liquid processing mechanism to the heat exchange tube through an insulated pipe with open ends, adding a non-conductive heat exchange medium within the loop, and simultaneously adding a heat transfer medium to the insulated storage tank. The liquid processing mechanism regulates the temperature of the non-conductive heat exchange medium in real time, ensuring uniform and constant temperature of the spinning solution under both low and high temperature conditions. Furthermore, this invention enables needle-free electrospinning under high-voltage electrostatic conditions, effectively maintaining the temperature of the electrospinning solution and preventing temperature control failures caused by high-voltage electrostatic interference, high-voltage electrostatic breakdown, or high-voltage electrostatic transfer.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A constant temperature device for spinning solution under a high voltage electrostatic field, characterized in that, include: Insulating liquid storage tank; A heat-conducting tank installed inside an insulating liquid storage tank to contain the spinning solution; Heat exchange tubes installed in an insulated liquid storage tank; and liquid handling mechanism; The heat exchange tube has openings at both ends along its own axial direction, and the openings are exposed by the sidewall of the insulating liquid storage tank; the liquid handling mechanism is connected to the openings at both ends of the heat exchange tube through an insulating pipeline to form a circulation loop; a non-conductive heat exchange medium flows in the circulation loop; the insulating liquid storage tank contains a heat transfer medium; the liquid handling mechanism is configured to regulate the temperature of the non-conductive heat exchange medium and drive the non-conductive heat exchange medium to flow in the circulation loop.

2. The constant temperature device for spinning solution under high voltage electrostatic field according to claim 1, characterized in that, The non-conductive heat exchange medium includes one or more liquids selected from methanol, ethanol, ethylene glycol, glycerol, silicone oil, and ethyl acetate.

3. The constant temperature device for spinning solution under a high voltage electrostatic field according to claim 1, characterized in that, The heat transfer medium is water or salt water.

4. The constant temperature device for spinning solution under high voltage electrostatic field according to claim 1, characterized in that, The insulating conduit is one of the following: silicone tube, PE tube, PU tube, PP tube, PA tube, or PVC tube.

5. The constant temperature device for spinning solution under high voltage electrostatic field according to claim 1, characterized in that, The insulating liquid storage tank is made of one of the following materials: polyethylene, polypropylene, polyester, polytetrafluoroethylene, plexiglass, polyvinyl chloride, or nylon.

6. The constant temperature device for spinning solution under high voltage electrostatic field according to claim 1, characterized in that, The liquid handling mechanism includes a temperature controller for regulating the temperature of the non-conductive heat exchange medium, a liquid delivery pump for driving the non-conductive heat exchange medium to flow in the circulation loop, and a flow guide valve for controlling the flow direction and flow rate of the non-conductive heat exchange medium.

7. The constant temperature device for spinning solution under a high voltage electrostatic field according to claim 1, characterized in that, The surface of the heat-conducting groove that comes into contact with the heat transfer medium is an arc surface.

8. The constant temperature device for spinning solution under high voltage electrostatic field according to claim 1, characterized in that, The insulating liquid storage tank is equipped with several heat exchange tubes, and the insulating pipeline is connected to the two ends of each heat exchange tube through insulating branch pipes.

9. The constant temperature device for spinning solution under high voltage electrostatic field according to claim 1, characterized in that, The insulating liquid storage tank is covered with a cover plate, which is made of transparent material. The lower surface of the cover plate is in close contact with the opening of the heat conduction tank. The cover plate has an exhaust and liquid filling hole and a cover that matches the exhaust and liquid filling hole.

10. The constant temperature device for spinning solution under a high voltage electrostatic field according to claim 9, characterized in that, The cover plate is fixed to the insulating liquid storage tank with screws made of PE material.

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