CN211005728U - Receiving device for electrostatic spinning and electrostatic spraying - Google Patents
Receiving device for electrostatic spinning and electrostatic spraying Download PDFInfo
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- CN211005728U CN211005728U CN201920499798.7U CN201920499798U CN211005728U CN 211005728 U CN211005728 U CN 211005728U CN 201920499798 U CN201920499798 U CN 201920499798U CN 211005728 U CN211005728 U CN 211005728U
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 92
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The utility model provides a receiving device for electrostatic spinning and electrostatic spraying, which comprises a conductive conveyor belt (1), a driving transmission shaft (2), a driven transmission shaft (3), a deviation correcting device (4), a high-voltage power supply (5), a base and conveyor belt separating device (6) and an insulating device; the conductive conveyor belt (1) passes through the deviation correcting device (4) and then is wound between the driving transmission shaft (2) and the driven transmission shaft (3); a uniform high-voltage electric field is formed between the conductive conveyor belt (1) and the high-voltage power supply (5) which are connected and the emitter (8) of electrostatic spinning or electrostatic spraying; a substrate and conveyor belt separating device (6) for separating the substrate from the conductive conveyor belt; the insulating device can insulate and isolate the charged receiving device from other parts of the electrostatic spinning and electrostatic spraying equipment.
Description
Technical Field
The invention belongs to the technical field of electrostatic spinning equipment, and relates to a novel receiving device for electrostatic spinning and electrostatic spraying.
Background
Electrospinning and electrostatic spraying are extremely convenient and energy-efficient processes for producing nano-coatings. In recent years, the electrostatic spinning and electrostatic spraying process gets more and more attention in the industry, and the requirements on preparation precision and capacity of mass production equipment of electrostatic spinning and electrostatic spraying are higher and higher.
Achieving good uniformity of nanofiber and nanoparticle coatings, especially on low grammage nonwovens, is a difficulty in electrospinning and electrostatic spraying processes. In most products prepared by electrospinning and electrostatic spraying processes, such as air filter elements, battery separators, tissue scaffolds, etc., the uniformity of nanofiber and nanoparticle coatings is an important factor affecting the performance of the products.
In addition, the relatively low productivity of electrostatic spinning and electrostatic spraying, and how to collect the prepared nano coating more efficiently is also a concern in the industry. At present, the research and development personnel in our country understand the technical field of electrospinning, and think that the good performance is needed, the electric field is uniform, and a high-voltage power supply with opposite charges is used for an emitting electrode and a receiving electrode. Secondly, stability is ensured in terms of operation time, thirdly, adaptability to base materials is wide, and fourthly, the use of various pretreatment and post-treatment process units except spinning is flexible.
In the current electrostatic spinning and electrostatic spraying equipment, for example, the technologies disclosed in patent application numbers 201010018296.1, 201510003383.2, 201820274440.X, 201610424431.X and the like, the continuous collection of the nano-coating is realized, but some pain points exist, such as poor universality, poor stability, low process flexibility and uneven prepared nano-coating.
The metal foil conveyor belt disclosed in chinese patent application No. 201010018296.1, which is used as a nanofiber receiving device, realizes continuous collection of nanofibers; however, it can only use metal foil as a receiving substrate, and cannot use insulating materials (e.g. non-woven fabric, paper) as a base material, which greatly limits the versatility and application prospects of the electrospinning and electrostatic spraying processes. In addition, two ends of the metal foil are fixed on the two rotating shafts, so that the nano coating prepared by using the metal foil conveyor belt cannot be conveniently combined with other subsequent processes (such as ultrasonic welding, online monitoring, hot pressing, slitting and drying). In addition, in consideration of safety problems and influence of high voltage on other parts of the equipment, the high voltage cannot be provided for the metal foil, so that the potential of the metal foil serving as a receiver is similar to that of other parts of the equipment, the attraction of the metal foil on the electrostatic spinning nano-fibers is insufficient, and the receiving efficiency of the metal foil on the nano-fibers is reduced; in addition, no deflection device is disclosed, and when the device is operated for a long time, the metal foil can deviate from the original central line in motion, so that the electrostatic spinning and electrostatic spraying processes are unstable.
The electrostatic spinning product conveying system disclosed in chinese patent application No. 201510003383.2 realizes continuous collection of electrostatic spinning nanofibers, but before the nanolayers are collected on the take-up roller, the nanolayers are attached to the conveyor belt, and the conveyor belt drives the nanofibers forward to pass through all process links. In addition, considering safety issues and the effect of high voltage on other parts of the device, it cannot provide high voltage electricity to the delivery system, and thus its efficiency in receiving nanofibers is low.
An electrostatic spinning receiving electrode disclosed by Chinese utility model patent with application number of 201820274440.X provides a smooth receiving plane for a base material by using a conductive guide belt, has good universality, and is suitable for various conductive and insulating base materials; and the method also has high process flexibility, and is convenient to be combined with other processes (such as ultrasonic welding, online monitoring, hot pressing, slitting and drying). However, in consideration of safety problems and the influence of high voltage on other parts of the equipment, the device does not provide a device scheme capable of providing high voltage electricity for the conveyor belt, and the problems of uniformity and efficiency are not thoroughly solved. In addition, it does not disclose a deviation rectification system for the conductive conveyor belt, and the direct consequence of the lack of the device is that the conveyor belt can deviate from the original center line when operating for a long time, thereby resulting in poor stability of the receiving device and reduced practicability.
The electrostatic spinning discrete roller type nanofiber membrane continuous receiving method and device disclosed by Chinese invention patent with application number of 201610424431.X realize continuous preparation of the nanofiber composite substrate. And the electrostatic spinning receiving device has good process flexibility and is convenient to be combined with other processes (such as ultrasonic welding, online monitoring, hot pressing, slitting and drying). But it cannot provide high voltage electricity to the delivery system in consideration of safety issues and the influence of high voltage electricity on other parts of the device, so that it is inefficient in receiving nanofibers. In addition, compared with the flat conductive belt with high voltage designed by the patent, the uniformity of the electric field formed between the flat conductive belt and the electrostatic spinning emitter is poor, so that the distribution uniformity of the nano-fiber filaments is poor.
SUMMERY OF THE UTILITY MODEL
It is to be understood that all combinations of the foregoing concepts and additional concepts discussed in greater detail below (assuming such concepts are not mutually inconsistent) are to be considered as part of the inventive subject matter disclosed herein. In particular, all combinations of claimed subject matter appearing in this disclosure are considered part of the inventive subject matter disclosed herein. It should also be understood that the terminology explicitly used herein may be found in any disclosure incorporated by reference herein, and should be accorded the most consistent meaning with the specific concepts disclosed herein.
In order to solve the technical difficulties of low universality, poor stability and uneven prepared nano coating of the existing electrostatic spinning and electrostatic spraying equipment, the problems can be overcome by designing a receiving device which utilizes a conductive conveyor belt to drive a substrate to be used for electrostatic spinning and electrostatic spraying. Furthermore, the device designed by the patent of the invention also has the advantage of improving the deposition efficiency of the nano coating on the receiver. In addition, the equipment designed by the invention can enable the electrostatic spinning and electrostatic spraying to have higher flexibility in the process and can be conveniently combined with other processes.
The invention provides a receiving device for electrostatic spinning and electrostatic spraying, which comprises: electric conveyer belt (1), initiative transmission shaft (2), passive transmission shaft (3), deviation correcting device (4), high voltage power supply (5), basement and conveyer belt separator (6), insulating device, its characterized in that: the conductive conveyor belt (1) is annular and passes through the deviation correcting device (4); the conductive conveyor belt (1) is tightly wound between the driving transmission shaft (2) and the driven transmission shaft (3) in a tension adjusting mode; the deviation correcting device (4) enables the conductive conveyor belt (1) to be always positioned in the middle of the driving transmission shaft (2) and the middle of the driven transmission shaft (3) in the motion process; the conductive conveyor belt (1) is connected with a high-voltage power supply (5) to enable the conveyor belt to have high voltage opposite to the electrical property of the electrostatic spinning or electrostatic spraying emitter (8), so that a high-voltage electric field is formed between the conveyor belt and the electrostatic spinning or electrostatic spraying emitter (8); the receiving device is provided with a substrate and conveyor belt separating device (6) for separating the substrate from the conductive conveyor belt (1); the insulating device can insulate and isolate the charged receiving device from other parts of the electrostatic spinning and electrostatic spraying equipment. Compared with the receiving device disclosed in the reference document, the receiving device disclosed by the invention is novel in that the receiving device is a universal modular receiver, and conductive (such as aluminum foil) and insulating (such as non-woven fabric and paper) base materials can be conveniently combined with other subsequent processes (such as ultrasonic welding, online monitoring, hot pressing, slitting and drying) after being subjected to an electrostatic spinning or electrostatic spraying process on the receiving device; meanwhile, the receiving device also discloses an insulating device, so that the receiving device can be provided with high voltage, the electrostatic spinning and electrostatic spraying efficiency is higher, and the application range is wider.
The receiving device for electrostatic spinning and electrostatic spraying is further characterized in that the conductive conveyor belt (1) is a conveyor belt made of conductive materials; the breadth is 0.1-3m, the length is 1-10m, and the thickness is 0.1-5 mm. The breadth, length and thickness can be adjusted according to the requirements of the electrostatic spinning and electrostatic spraying processes. The conductive conveyor (1) provides a flat conductive plane opposite the electrospun or electrospun coated emitter (8), thereby enabling a uniform electric field to be formed between the electrospun or electrospun coated emitter (8) and the conductive conveyor (1), which on the one hand increases the versatility of electrospinning and electrostatic coating. The base material of electrostatic spinning or electrostatic spraying is not only conductive material (such as aluminum foil) but also insulating material (such as non-woven fabric and paper); on the other hand, the uniformity of electrostatic spinning and electrostatic spraying is improved. The uniform electric field between the emitter (8) of electrostatic spinning or electrostatic spraying and the conductive conveyor belt (1) enables the nano coating prepared by electrostatic spinning or electrostatic spraying to be uniformly deposited on the base material attached to the conductive conveyor belt (1).
The above-described conductive conveyor belt (1) is also characterized in that the conductive material used is preferably stainless steel, conductive rubber (e.g., graphite nickel-filled silicone rubber), conductive plastic (e.g., polyaniline), or a composite material containing a conductive coating (e.g., epoxy, polyurethane). Preferably, the width of the conductive conveyor belt (1) is 0.3-2.1 m; preferably, the length of the conductive conveyor belt (1) is 2-5 m; preferably, the thickness of the conductive conveyor belt (1) is 0.3-1 mm.
The receiving device for electrostatic spinning and electrostatic spraying is also characterized in that the driving transmission shaft (2) and the driven transmission shaft (3) are positioned on the same horizontal plane and are parallel to each other; the length of the driving transmission shaft (2) and the driven transmission shaft (3) is 0.1-3m, and the diameter is 0.1-0.6 m. The length and diameter can be adjusted according to the requirements of the electrostatic spinning and electrostatic spraying processes.
The active drive shaft (2) and the passive drive shaft (3) are also characterized by a preferred length of 0.3-2.1m and a preferred diameter of 0.2-0.5 m.
The receiving device for electrostatic spinning and electrostatic spraying is further characterized in that the deviation correcting device (4) is located on the back of the working face of the conductive conveyor belt (1). The deviation correcting device (4) improves the stability of the receiving device for electrostatic spinning and electrostatic spraying, and ensures that the conductive conveyor belt (1) can stably run along the central lines of the driving transmission shaft (2) and the driven transmission shaft (3) for a long time.
The receiving device for electrostatic spinning and electrostatic spraying is also characterized in that the high-voltage power supply (5) provides the conductive conveyor belt (1) with charges with the opposite property of the charges of the emitter (8) for electrostatic spinning or electrostatic spraying. The conductive conveyor belt (1) is provided with high voltage opposite to the emitter (8) of electrostatic spinning or electrostatic spraying, so that the efficiency of electrostatic spinning or electrostatic spraying can be increased, and the higher high voltage electric field can improve the efficiency of electrostatic spinning or electrostatic spraying. On the other hand, compared with other parts of the receiving device for electrostatic spinning and electrostatic spraying, the conductive conveyor belt (1) has stronger attraction to the nano coating prepared by electrostatic spinning or electrostatic spraying.
The receiving device for electrostatic spinning and electrostatic spraying is also characterized in that the substrate and the conveyor belt separating device (6) are wedge-shaped; the separating device (6) is positioned at the tail end of the working surface of the conductive conveyor belt (1) along the width direction of the conductive conveyor belt (1) and is placed in the middle; the tip of the separating device (6) is tangent to the surface of the conductive conveyor belt (1); the length of the wedge block is 0.2-4m, the angle of the sharp angle of the wedge block is 2-30 degrees, the width of the wedge block is 3-200mm, and the angle of the sharp angle of the wedge block and the width of the wedge block can be adjusted according to the requirements of electrostatic spinning and electrostatic spraying processes. The separation device (6) does not need to introduce extra tensile force when the base material is separated from the conductive conveyor belt (1), so that the base material is more conveniently separated from the conductive conveyor belt (1); on the other hand, the composite material of the nano coating and the base material prepared by electrostatic spinning and electrostatic spraying is protected, so that the composite material cannot be damaged due to the separation of the base material and the conductive conveyor belt (1). After the base material is separated from the conductive conveyor belt (1), the subsequent processes (such as ultrasonic welding, hot pressing, slitting and drying) can be conveniently processed, so that the flexibility of electrostatic spinning and electrostatic spraying equipment in the process is improved. The separating device (6) may be a wedge tangential to the conductive conveyor belt (1), but its position, angle, material are the result of specific calculations. Firstly, the material with stable insulation, such as PTFE, UHMWPE, PA6 and other materials with stable wear resistance, is selected. The second is the position where the steel strip cannot be rubbed to cause damage to the steel strip, and the gap with the surface of the steel strip is too large to introduce too much tension to the separation of the substrate to cause damage to the substrate. In addition, the angle is suitable, and the angle of the wedge is preferably suitable, so that the force introduced by the wedge to the separation of the substrate is equal to the electric field force absorbed by the substrate on the conductive conveyor belt (1).
The device (6) for separating the substrate from the conveyor belt is also characterized in that the wedge block preferably has a length of 0.3-2.3m, a sharp angle of 5-30 degrees and a width of 5-100 mm.
The receiving device for electrostatic spinning and electrostatic spraying is further characterized in that the insulating device comprises an insulating bearing (9), an insulating bearing support (10), an insulating substrate and conveyor belt separating device support (11) and an insulating deviation correcting device support (12). The insulating device not only provides the functions of isolating the electrified conductive conveyor belt (1), the active transmission shaft (2), the passive transmission shaft (3), the deviation correcting device (4) and the separating device (6), but also plays a role in supporting the devices. The insulating device ensures that high voltage in the electrostatic spinning and electrostatic spraying receiving device does not influence the normal work of other electronic components (such as a servo motor) in the electrostatic spinning and electrostatic spraying receiving device. In addition, the high voltage in the electrostatic spinning and electrostatic spraying receiving device cannot leak out of the electrostatic spinning and electrostatic spraying receiving device due to the insulating device, so that on one hand, the electrostatic spinning and electrostatic spraying unit has better flexibility in process, and when the electrostatic spinning and electrostatic spraying unit is combined with various other processes (such as ultrasonic welding, online monitoring, hot pressing, slitting and drying), other process equipment cannot be influenced due to the high voltage; on the other hand, the electrostatic spinning and electrostatic spraying unit has higher safety. Both the material and the mounting position of the insulation means are specific calculations. The insulating device is required to not only isolate high voltage electricity but also play a role of a supporting piece, so the material of the insulating device is preferably a material with high voltage resistance, good insulation performance and good mechanical performance, such as POM, PSF and the like. Secondly, the installation position is provided, although the insulating property of the insulating material is good, the supporting parts are provided with high voltage electricity, so the installation position needs to be separated from other parts (such as a servo motor) by a certain distance. The length of the gap is determined by the breakdown distance of the applied high voltage, for example, 10cm when 10Kv is applied.
The receiving device for electrostatic spinning and electrostatic spraying is also characterized in that a spreading roller (7) device can be distributed at the front part of the conductive conveyor belt (1). The function of the device is to ensure that the substrate is flat and does not wrinkle when in contact with the conductive conveyor belt (1).
The receiving device for electrostatic spinning and electrostatic spraying is further characterized in that the conductive conveyor belt (1) is tightly wound between the driving transmission shaft (2) and the driven transmission shaft (3) in a tension adjusting mode. The tension adjusting mode is preferably a cylinder expansion mode.
The receiving device for electrostatic spinning and electrostatic spraying is further characterized by comprising a driving transmission shaft driving device (14), a driving transmission shaft servo motor (15), a deviation correcting device driving device (16) and a deviation correcting device servo motor (17).
Compared with the prior art, the invention has the advantages that:
the receiver is suitable for various conductive and insulating substrates and is applied to electrostatic spinning and electrostatic spraying processes; and the continuous stable production and processing are carried out by combining the winding and unwinding device.
The receiver can be charged with a high voltage opposite to the electrostatic spinning or electrostatic spraying emitter (8) to improve the efficiency of electrostatic spinning or electrostatic spraying.
The receiver plays a role of forming a uniform electric field between the receiver and the electrostatic spinning or electrostatic spraying emitter (8), so that the uniformity of the received nano coating is better.
Existing electrospinning and electrostatic spray receivers can place tension on the substrate causing wrinkles and non-uniformities. The receiver of the invention can play the roles of supporting and conveying the substrate, thereby reducing the tension borne by the substrate, avoiding wrinkles and forming uneven conditions.
The receiver is provided with a separation device (6) which makes it easier to separate the substrate from the conductive strip. On one hand, the integrity of the substrate and the nano coating attached to the substrate is protected, and on the other hand, the process flexibility of the electrostatic spinning and electrostatic spraying unit is improved.
The receiver is provided with an insulating device, so that high voltage in the electrostatic spinning and electrostatic spraying receiving device cannot leak out of the electrostatic spinning and electrostatic spraying receiving device, and the electrostatic spinning and electrostatic spraying unit has better safety.
Drawings
FIG. 1 is a schematic structural diagram of a receiving device according to the present invention;
FIG. 2 is a bottom view of the receiving device of the present invention;
in the drawings: 1. a conductive conveyor belt; 2. a drive transmission shaft; 3. a driven transmission shaft; 4. a deviation correcting device; 5. a high voltage power supply; 6. a substrate and conveyor belt separation device; 7. a spreader roll; 8. an electrostatic spinning or electrostatic spraying emitter; 9. an insulating bearing; an insulating bearing support; 11. an insulating substrate and conveyor belt separation device support; 12. an insulating deviation correcting device support; 14. a drive device for the drive transmission shaft; 15. a driving transmission shaft servo motor; 16. a deviation correcting device driving device; 17. deviation correcting device servo motor.
Detailed Description
In the following detailed description, for purposes of explanation and not limitation, representative embodiments disclosing specific details are set forth in order to provide a thorough understanding of the claimed invention. However, it will be apparent to one having ordinary skill in the art having had the benefit of the present disclosure that other embodiments according to the teachings of the present invention that depart from the details disclosed herein remain within the scope of the appended claims. Moreover, descriptions of well-known apparatus and methods may be omitted so as to not obscure the description of the representative embodiments. Such methods and apparatus are clearly within the scope of the claimed invention.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Example 1
The receiving device for electrostatic spinning and electrostatic spraying provided by the invention is used for preparing a nanofiber composite non-woven fabric filter element in an ultrathin haze-preventing mask. Due to the ultra-thin requirement, the non-woven fabric of the filter element is selected to be 20 gsm.
The receiving device is positioned on the electrostatic spinning launching device (8) and consists of a conductive conveyor belt (1), a driving transmission shaft (2), a driven transmission shaft (3), a deviation correcting device (4), a high-voltage power supply (5), a base and conveyor belt separating device (6), an insulating device and an expanding roller (7).
Wherein, the 20gsm non-woven fabric with the width of 2.8m is uncoiled and then passes through the expanding roller (7) to be smoothly attached to the conductive conveyor belt (1) with the width of 3m and the length of 10 m. The driving transmission shaft (2) and the driven transmission shaft (3) with the length of 3.2m and the diameter of 0.3m drive the conductive conveyor belt (1) to convey the non-woven fabrics attached to the conductive conveyor belt from the fabric feeding end to the fabric discharging end. The deviation correcting device (4) ensures that the conductive conveyor belt (1) is always positioned in the middle of the driving transmission shaft (2) and the driven transmission shaft (3). The conductive conveyor belt (1) and the non-woven fabrics attached to the conductive conveyor belt pass through a working area (a corresponding conductive conveyor belt part above the electrostatic spinning emission device (8)) of electrostatic spinning at a constant speed of 0.5m/min, and receive the nano-fiber filaments emitted from a spinning pole below continuously to form a nano-fiber film.
The solution system for electrospinning was a 10 wt% aqueous solution of PVA. The voltage of a spinning emitter is 35kV positive high voltage, the conductive conveyor belt (1) is provided with 2kV negative high voltage by a high-voltage power supply (5), the spinning distance is set to be 15cm, and the nano-fiber composite non-woven fabric filter core is prepared by spinning under the conditions of 35% relative humidity and 25 ℃.
Because the effect of electrically conductive conveyer belt, the electric field of its electrostatic spinning's work area is evenly distributed, has reduced simultaneously and has receive and release the tensile tension to the non-woven fabrics for the non-woven fabrics is levelly and smoothly attached to electrically conductive conveyer belt, thereby also can be even on the coating of the low grammes per square metre non-woven fabrics of making easy tensile deformation electrostatic spinning nanofiber membrane.
After the 20gsm nonwoven fabric passes through the working area of electrostatic spinning, 0.1g of PVA nanofiber membrane per square meter is uniformly coated on the nonwoven fabric. The composite non-woven fabric is peeled from the conductive conveyor belt (1) after passing through a substrate and conveyor belt separating device (6) with the length of 3.2m, the sharp angle of 25 degrees and the width of 100mm, and is rolled after passing through a composite roller.
The deviation correcting device (4) ensures the neatness of the non-woven fabric rolling. The nanofiber on the obtained nanofiber composite non-woven fabric filter element has good uniformity, and the variation coefficient of the fiber diameter (the ratio of the standard deviation of the fiber diameter to the average value of the fiber diameter) is 12%. The filtering efficiency of the filter on NaCl particles of 0.3um reaches 99 percent.
Example 2
The receiving device for electrostatic spinning and electrostatic spraying is used for preparing the ultra-high molecular weight polyethylene lithium battery composite diaphragm.
The receiving device is positioned on the electrostatic spraying transmitting device (8) and consists of a conductive conveyor belt (1), a driving transmission shaft (2), a driven transmission shaft (3), a deviation correcting device (4), a high-voltage power supply (5), a substrate and conveyor belt separating device (6), an insulating device and an expanding roller (7).
Wherein, the ultra-high molecular weight polyethylene diaphragm with the width of 0.1m is uncoiled and then passes through the expanding roller (7) to be smoothly attached to the conductive conveyor belt (1) with the width of 0.1m and the length of 1 m. The active transmission shaft (2) and the passive transmission shaft (3) with the length of 1.2m and the diameter of 0.1m drive the conductive conveyor belt (1) to convey the membrane attached to the conductive conveyor belt from the cloth feeding end to the cloth discharging end. The deviation correcting device (4) ensures that the conductive conveyor belt (1) is always positioned in the middle of the driving transmission shaft (2) and the driven transmission shaft (3). The conductive conveyor belt (1) and the membrane attached to the conductive conveyor belt pass through the electrostatic spraying work area (the corresponding conductive conveyor belt part above the electrostatic spraying emission device (8)) at a constant speed of 0.01 m/min.
The solution system for electrostatic spraying was a 3 wt% solution of PVDF in HFIP. The voltage of a spinning emitter of the composite diaphragm is 25kV positive high voltage, the conductive conveyor belt (1) is provided with 2kV negative high voltage by a high-voltage power supply (5), the spinning distance is set to be 15cm, and the composite diaphragm of the ultra-high molecular weight polyethylene lithium battery is prepared by electrostatic spraying under the conditions of 30% relative humidity and 25 ℃.
Due to the action of the conductive conveyor belt, the electric field of the electrostatic spraying working area is uniformly distributed, and meanwhile, the tensile tension of the winding and unwinding roll to the diaphragm is reduced, so that the diaphragm is smoothly attached to the conductive conveyor belt, and PVDF nano-particles are uniformly sprayed on the diaphragm.
After passing through a working area of electrostatic spinning, 1.5g of PVDF nano particles per square meter are uniformly sprayed on the ultra-high molecular weight polyethylene diaphragm. The ultra-high molecular weight polyethylene lithium battery composite diaphragm is peeled from the conductive conveyor belt (1) after passing through a base and conveyor belt separating device (6) with the length of 0.15m, the angle of a sharp angle of 5 degrees and the width of 10mm, and is wound after being hot-pressed.
The deviation correcting device (4) ensures the neat rolling of the diaphragm. The obtained nano-fiber on the ultra-high molecular weight polyethylene lithium battery composite diaphragm has good uniformity, and the variation coefficient of the fiber diameter is 14%.
It is contemplated that any portion of any aspect or any portion discussed in an embodiment herein may be implemented or combined with any portion or embodiment of any aspect or embodiment discussed herein.
One or more specific embodiments are described for purposes of illustration only. This description is presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the form disclosed. It will be apparent to those skilled in the art that numerous variations and modifications can be made without departing from the scope of the claims set out below.
Claims (10)
1. The utility model provides a receiving arrangement of electrostatic spinning and electrostatic spraying, includes electrically conductive conveyer belt (1), initiative transmission shaft (2), passive transmission shaft (3), deviation correcting device (4), high voltage power supply (5), basement and conveyer belt separator (6), insulating device, its characterized in that: the conductive conveyor belt (1) is annular and is positioned opposite to the emission electrode, and the conductive conveyor belt (1) is tightly wound between the driving transmission shaft (2) and the driven transmission shaft (3) in a tension adjusting mode; the deviation correcting device (4) enables the conductive conveyor belt (1) to be always positioned in the middle of the driving transmission shaft (2) and the middle of the driven transmission shaft (3) in the motion process; the conductive conveyor belt (1) is connected with a high-voltage power supply (5) to enable the conveyor belt to have high voltage opposite to the electrical property of the electrostatic spinning or electrostatic spraying emitter (8), so that a high-voltage electric field is formed between the conveyor belt and the electrostatic spinning or electrostatic spraying emitter (8); the receiving device is provided with a substrate and conveyor belt separating device (6) which separates the substrate from the conductive conveyor belt (1) under the action of the inclined surface without friction; the insulating device can insulate and isolate the electrified receiving device from other parts of electrostatic spinning and electrostatic spraying equipment, and ensure the safety of electric parts such as a deviation correcting device, a motor, a speed reducer, a controller and the like in the equipment.
2. The receiving device for electrostatic spinning and spraying according to claim 1, characterised in that the conductive conveyor belt (1) is a conveyor belt made of a conductive material.
3. The receiving device for electrostatic spinning and spraying according to claim 2, characterised in that the conductive material used is stainless steel, conductive rubber, conductive plastic, or a composite material containing a conductive coating, and the conductive conveyor belt (1) has a width of 0.1-3m, a length of 1-10m, and a thickness of 0.1-5 mm.
4. The receiving device for electrostatic spinning and spraying according to claim 1, wherein the driving transmission shaft (2) and the driven transmission shaft (3) are located on the same horizontal plane and are parallel to each other; the length of the driving transmission shaft (2) and the driven transmission shaft (3) is 0.1-3m, and the diameter is 0.1-0.6 m.
5. The receiving device for electrostatic spinning and spraying according to claim 1, characterized in that the deviation correcting device (4) is located on the back of the working surface of the conductive conveyor belt (1).
6. The receiving device for electrostatic spinning and spraying according to claim 1, characterised in that the high voltage power supply (5) supplies the conductive conveyor belt (1) with an electric charge having a property opposite to that of the electrostatic spinning or spraying emitter (8).
7. The receiving device for electrostatic spinning and spraying according to claim 1, characterised in that the substrate and conveyor belt separating device (6) is a wedge; the separating device (6) is positioned at the tail end of the working surface of the conductive conveyor belt (1) along the width direction of the conductive conveyor belt (1) and is placed in the middle; the tip of the separating device (6) is tangent to the surface of the conductive conveyor belt (1); the length of the wedge is 0.2-4m, the angle of the sharp corner of the wedge is 2-30 degrees, and the width of the wedge is 3-200 mm.
8. The receiving device for electrostatic spinning and spraying according to claim 1, wherein the insulation device comprises an insulation bearing (9), an insulation bearing support (10), an insulation substrate and conveyor belt separation device support (11), and an insulation deviation-correcting device support (12).
9. The receiving device for electrostatic spinning and spraying according to claim 1, characterized in that the conductive conveyor belt (1) may be further provided with spreading roller (7) means in front of it, which function is to ensure that the substrate is flat and non-wrinkled when it is in contact with the conductive conveyor belt (1).
10. The receiving device for electrostatic spinning and spraying according to claim 1, wherein the receiving device further comprises a driving shaft driving device (14) and a driving shaft servo motor (15), and a deviation correcting device driving device (16) and a deviation correcting device servo motor (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920499798.7U CN211005728U (en) | 2019-04-15 | 2019-04-15 | Receiving device for electrostatic spinning and electrostatic spraying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920499798.7U CN211005728U (en) | 2019-04-15 | 2019-04-15 | Receiving device for electrostatic spinning and electrostatic spraying |
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| CN211005728U true CN211005728U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826726A (en) * | 2019-04-15 | 2020-10-27 | 苏州能环新材料科技有限公司 | Receiving device for electrostatic spinning and electrostatic spraying |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826726A (en) * | 2019-04-15 | 2020-10-27 | 苏州能环新材料科技有限公司 | Receiving device for electrostatic spinning and electrostatic spraying |
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Effective date of registration: 20231026 Address after: Room 1072, Building 1, No. 18 Madun Road, Hushuguan, High tech Zone, Suzhou City, Jiangsu Province, 215011 Patentee after: Suzhou Meiling Biomedical Technology Co.,Ltd. Address before: 215129, 2nd Floor, Northeast, Building 8, New Technology Industrial Park, No. 98 Hengshan Road, High tech Zone, Suzhou City, Jiangsu Province Patentee before: Suzhou annex new Mstar Technology Ltd. |