CN112442797B

CN112442797B - Portable airflow-assisted electrostatic spinning mask instrument

Info

Publication number: CN112442797B
Application number: CN202011297721.5A
Authority: CN
Inventors: 刘勇; 刘玥琦; 吕亚榕
Original assignee: Beijing University of Chemical Technology
Current assignee: Beijing University of Chemical Technology
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2022-02-08
Anticipated expiration: 2040-11-18
Also published as: CN112442797A

Abstract

The invention relates to a portable airflow-assisted electrostatic spinning mask instrument which comprises a handheld insulating shell, a dry battery pack, a power supply lead, a power supply switch, a conversion lead, a high-voltage converter, a high-voltage lead, an airflow handle, an upper end cover, an air hole, a liquid storage bottle, a front end cover, a filament outlet hole, an airflow hole, a metal catheter, blades, a blade shaft and a gear box, wherein the dry battery pack is arranged on the handheld insulating shell; the dry battery pack is used as a power supply and is converted by a high-voltage converter to generate high-voltage static electricity; the spinning solution is pushed by the liquid gravity and the atmospheric pressure in the liquid storage bottle without additional driving force; the gear in the gear box is driven to rotate by pressing the airflow handle, so that the blades are driven to rotate to generate airflow; the airflow carries out auxiliary spinning on the liquid at the orifice of the metal liquid guide pipe through the air hole at the front end of the handheld insulating shell and the wire outlet hole on the front end cover; the device is simple and portable, is simple to operate, has high spinning efficiency, and has the advantages of reducing the electrostatic interference and fiber blockage near the spinning outlet and realizing the directional deposition of fibers by the aid of airflow.

Description

Portable airflow-assisted electrostatic spinning mask instrument

Technical Field

The invention relates to a handheld portable electrostatic spinning device, which can be used for quickly preparing a facial mask by air flow assistance and belongs to the technical field of electrostatic spinning.

Background

The electrostatic spinning technology is one of effective methods for preparing a nanofiber membrane, and the principle can be briefly described as that a spinning solution forms charged jet flow under the action of a high-voltage electric field and is sprayed out from a nozzle, the jet flow is split and stretched in the process of flying to a collecting device, and meanwhile, a solvent is volatilized, dried and solidified to form nanofibers; the nanofiber membrane prepared by the electrostatic spinning technology has the characteristics of large specific surface area, large length-diameter ratio, high porosity and the like; the method has great application potential in the fields of biological tissue engineering, medical materials, protective clothing and masks, new energy, functional devices and the like.

Two trends are presented for the electrostatic spinning technical research at present: the method has the advantages that firstly, the fiber is accurately deposited and positioned, and the whip and unstable movement in the electrostatic spinning process are not beneficial to the directional accurate deposition of jet flow, so that the development of the electrostatic spinning equipment for assisting the directional deposition of the fiber is very meaningful; secondly, the industrial mass production, in the actual application, the fiber membrane is generally prepared firstly and then transferred to the use position, the transfer process and the storage difficulty of the fiber membrane are larger, and meanwhile, the existing electrostatic spinning equipment has larger volume, is not easy to carry, and has strong dependence on an external power supply, so that the development of the electrostatic spinning equipment which is not limited by the external power supply, is convenient to carry and can be directly sprayed is necessary.

However, most of the existing electrostatic spinning equipment has large volume and is inconvenient to carry, and has the defects that a needle is easy to block, fibers cannot be directionally deposited and the like in the spinning process; in order to solve the above problems, small portable electrostatic spinning devices are available in the market, for example, chinese patent CN108560066A discloses a handheld portable electrostatic spinning device which can directly spray nanometer or micron filiform materials on various surfaces (such as skin, large objects, etc.); however, the equipment adopts single-needle spinning, the time required by the spraying process is long, the efficiency is low, and the needle is easy to block; the handheld electrostatic spinning device disclosed in the chinese patent CN203754859U does not need a spinning solution pushing device, and directly utilizes the self weight of the liquid in the liquid reservoir to provide the spinning solution to the needle through the solution channel, but the device does not indicate how the liquid reservoir communicates with the atmosphere and whether the solvent volatilization problem exists; the airflow-assisted handheld portable electrostatic spinning equipment disclosed in the Chinese patent CN108441972A overcomes the prior technical problems, realizes the directional deposition of fibers under the action of airflow assistance, but the operator of the equipment needs to manually press the tail end of a piston handle of a disposable injector, which causes the difficulty in controlling the propelling speed and the flow rate of a spinning solution and influences the quality of electrostatic spinning; the electrostatic spinning device disclosed in chinese patent CN110670150A adopts a hand-operated power generation type portable high voltage power supply to provide the required high voltage for the electrospinning process, and can continuously work in the power-off environment, but because the adopted voltage is unstable, the whole spinning distance is short, the fiber yield is low, and the practicability is poor.

Disclosure of Invention

The invention aims to provide a high-efficiency portable electrostatic spinning mask instrument by utilizing an electrostatic spinning technology, adopting a pinless mode and combining the factors of the self weight of liquid in a liquid storage bottle and the advantages of airflow-assisted spinning aiming at the existing problems.

The invention relates to a portable airflow-assisted electrostatic spinning mask instrument which comprises a handheld insulating shell, a dry battery pack, a power supply lead, a power supply switch, a conversion lead, a high-voltage converter, a high-voltage lead, an airflow handle, an upper end cover, an air hole, a liquid storage bottle, a front end cover, a wire outlet hole, an airflow hole, a metal catheter, blades, a blade shaft and a gear box, wherein the power supply lead is connected with the power supply switch through the power supply switch; the power switch is arranged outside the handheld insulating shell; the dry battery pack, the high-voltage converter and the liquid storage bottle are arranged in the handheld insulating shell; the dry battery pack is connected with a power wire for the power switch; the power switch is connected with the high-voltage converter through a conversion lead; the high-voltage converter is connected with the metal liquid guide pipe through a high-voltage lead; the solution for preparing the facial mask is stored in the liquid storage bottle; the upper end of the liquid storage bottle is provided with an upper end cover, and the upper end cover is provided with an air hole; one end of the metal conduit is connected with the lower end of the liquid storage bottle, and the other end of the metal conduit is connected with the front end of the handheld insulating shell, so that a flow channel is provided for the solution in the liquid storage bottle; the front end cover is provided with a screw outlet hole, is internally provided with threads and is in threaded connection with the handheld insulating shell; the front end of the handheld insulating shell is provided with an airflow hole; the airflow handle is connected with the gear box; one end of the blade shaft is connected with a gear in the gear box, and the other end of the blade shaft is connected with the blade.

A group of meshed straight bevel gears, a cylindrical gear, an extension spring, a spring fixing shaft, a central rotating shaft and a gear central shaft are arranged in the gear box; the air flow handle is fixed on a central rotating shaft on the inner side of the handheld insulating shell and can rotate around the central rotating shaft; the front end of the airflow handle is provided with a small number of gear teeth which are meshed with the cylindrical gear; the cylindrical gear and the large straight bevel gear which are coaxial are fixed together and can rotate around the central shaft of the gear together; the blade shaft is arranged on the small straight bevel gear; one end of the extension spring is connected to the central rotating shaft, and the other end of the extension spring is fixed on a spring fixing shaft on the inner side of the handheld insulating shell.

The liquid in the liquid storage bottle can pass through the metal liquid guide pipe by utilizing the dead weight and the atmospheric pressure, and is not required to be pushed by external force, so that the external force interference and uncontrollable propelling speed are avoided, and the continuous and uniform liquid conveying can be realized.

The upper end cover is made of an elastic body, the middle of the upper end cover is provided with an air hole, the thickness of the upper end cover is increased from the middle to the edge in sequence, the opening and the closing of the air hole are realized by utilizing the pressure difference between the inside and the outside of the upper end cover, the spinning solution can be ensured to flow out smoothly, and the volatilization of a solvent in the spinning solution can be prevented.

The metal liquid guide pipe has a certain inclination angle and is thinner at the position closer to the liquid outlet, so that the liquid in the liquid storage bottle can smoothly flow down.

The blades rotate to form airflow which passes through the airflow holes, so that airflow-assisted spinning can be realized, fibers are directionally deposited, and the fibers are prevented from blocking the yarn outlet.

The front end cover is uniformly provided with the filament outlets, fibers are finally generated from the filament outlets, and the front end cover and the handheld insulating shell are in threaded connection and can be easily detached, cleaned or replaced after being used.

Airflow holes are uniformly distributed at the front end of the handheld insulating shell, and a metal liquid guide pipe is arranged at the center of the handheld insulating shell.

The extension spring can realize the reset of the airflow handle.

The dry battery is used as the power supply of the invention, has small volume and convenient replacement, and avoids the complex operation of secondary charging.

The invention has the advantages that: (1) the volume is small and portable; (2) the liquid can continuously pass through the metal liquid guide pipe by utilizing the self weight and the atmospheric pressure of the liquid in the liquid storage bottle, the external force is not needed to push or the flow rate is not set in advance, and the operation is simple; (3) the airflow handle is driven by the grip of a hand, and the blade shaft is driven by the gear set in the gear box to drive the blades to rotate so as to form airflow-assisted spinning, so that the formed fibers smoothly pass through the yarn outlet, the blockage is avoided, and the directional deposition of the fibers is realized; (4) the air flow handle is driven by the grip force of the hand, so that a user can automatically adjust the size of the air flow according to the actual condition; (5) the front end cover is connected with the handheld insulating shell through threads, so that the front end cover can be conveniently replaced and cleaned, and the handheld insulating shell is clean and sanitary; (6) the mask can be sprayed to the field of cosmetics and wound dressings and is used in the field of medical treatment.

Drawings

FIG. 1 is a schematic diagram of a structural assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a gear set in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of a front end cap according to an embodiment of the present invention;

fig. 4 is a side view of a hand held insulating housing in an embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

As shown in fig. 1, the embodiment of the present invention is provided with a handheld insulating housing 1, a dry battery pack 2, a power supply lead 3, a power supply switch 4, a conversion lead 5, a high voltage converter 6, a high voltage lead 7, an airflow handle 8, an upper end cover 9, an air hole 10, a liquid storage bottle 11, a front end cover 12, a wire outlet hole 13, an airflow hole 14, a metal liquid guide tube 15, a blade 16, a blade shaft 17, and a gear box 18; the power switch 4 is fixed on the outer side of the handheld insulating shell 1; the dry battery pack 2, the high-voltage converter 6 and the liquid storage bottle 11 are fixed on the inner side of the handheld insulating shell 1; the dry battery pack 2 is connected with the power switch 4 through a power wire 3; the power switch 4 is connected with the high-voltage converter 6 by a conversion lead 5; the high-voltage converter 6 is connected with the metal liquid guide tube 15 by a high-voltage lead 7; the solution for preparing the mask is stored in the liquid storage bottle 11; an upper end cover 9 is arranged at the upper end of the liquid storage bottle 11, and an air hole 10 is formed in the upper end cover 9; one end of the metal liquid guide tube 15 is connected to the lower end of the liquid storage bottle 11, and the other end of the metal liquid guide tube is connected to the front end of the handheld insulating shell 1, so that a flow channel is provided for the solution in the liquid storage bottle; the front end cover 12 is provided with a screw outlet hole 13 which is internally provided with threads and is connected with the handheld insulating shell 1 through threads, so that the replacement is convenient; an airflow hole 14 is formed in the front end of the handheld insulating shell 1; the airflow handle 8 is connected with a gear box 18; the blade shaft 17 is connected at one end to a gear in the gear case 18 and at the other end to the blade 16.

As shown in FIG. 2, the gear set 18 of the present invention is composed of a large straight bevel gear 18-1, a small straight bevel gear 18-2, a cylindrical gear 18-3, an extension spring 18-4, a spring fixing shaft 1-1, a central rotating shaft 1-2 and a gear central shaft 1-3; the spring fixing shaft 1-1, the central rotating shaft 1-2 and the gear central shaft 1-3 are all fixed on the inner side of the handheld insulating shell 1; the airflow handle 8 is fixed on the central rotating shaft 1-2 and can rotate around the central rotating shaft 1-2; the front end of the airflow handle 8 is provided with a small number of gear teeth which are meshed with the cylindrical gear 18-3; the cylindrical gear 18-3 and the large straight bevel gear 18-1 are coaxially arranged on a gear central shaft 1-3 and are fixed together; the large straight bevel gear 18-1 is meshed with the small straight bevel gear 18-2; the vane shaft 17 is used as a central shaft of the small straight bevel gear 18-2 and is arranged on the small straight bevel gear 18-2; one end of the extension spring 18-4 is connected to the central rotating shaft 1-2, and the other end is fixed on the spring fixing shaft 1-1.

As shown in fig. 3, the front end cap 12 of the present invention has filament outlet holes 13 uniformly distributed thereon, and the fibers are finally generated from the filament outlet holes 13.

As shown in FIG. 4, the front end of the handheld insulating housing 1 of the present invention is uniformly distributed with air flow holes 14, and the central hole is a metal liquid guide tube 15.

The air flow passing through the air flow holes 14 can assist in spinning fibers, but the air flow holes are not necessarily positioned to be completely aligned with the filament outlet holes 13 on the front end cover 12.

When in use, the upper end cover 9 is firstly opened, the solution to be spun is added into the liquid storage bottle 11, and the solution in the liquid storage bottle 11 can smoothly pass through the metal liquid guide pipe 15 due to the action of gravity and atmospheric pressure; the hand-held insulating shell 1 is held by a hand, four fingers are put on the airflow handle 8, and the distance from the face to the four fingers is about 10 cm; starting a power switch 4, communicating the dry battery pack 2 and the high-voltage converter 6 through a power lead 3 and a conversion lead 5, and starting to generate high-voltage static electricity; then, the metal liquid guide tube 15 can carry high-voltage static electricity through the high-voltage lead 7, and liquid in the metal liquid guide tube 15 starts spinning; after the power switch 4 is started, the airflow handle 8 is pressed downwards at the same time, so that the airflow handle 8 rotates around the central rotating shaft 1-2 at a small angle, gear teeth at the front end of the airflow handle 8 drive the cylindrical gear 18-3 to rotate around the gear central shaft 1-3, and meanwhile, the large straight bevel gear 18-1 connected with the cylindrical gear 18-3 also rotates around the gear central shaft 1-3 in the same direction as the cylindrical gear 18-3; then, the large straight bevel gear 18-1 drives the small straight bevel gear 18-2 meshed with the large straight bevel gear to rotate, and vertical conversion of the rotating direction is completed while rotation is transmitted; when the small straight bevel gear 18-2 rotates, the blades 16 rotate under the driving of the blade shaft 17 to form airflow, and meanwhile, the extension spring 18-4 is extended; when the pressing of the airflow handle 8 is stopped, the airflow handle 8 is pulled back to the original position under the restoring force of the extension spring 18-4, and at the moment, the airflow can be continuously generated by continuously pressing the airflow handle 8; the generated continuous airflow forwards passes through the airflow holes 14, is divided into a plurality of airflows by the airflow holes 14 which are uniformly distributed, enters the space between the front end of the handheld insulating shell 1 and the front end cover 12, is merged with the spinning solution, and finally forms uniform fibers on the face through the fiber outlet hole 13 together, so that the airflow auxiliary spinning and the directional deposition of the fibers are realized.

The mask can be moved at any time when in use, and the mask can be uniformly formed on the face.

When all the solution in the liquid storage bottle 11 flows out, all the fiber is generated, the spinning process is terminated, the air flow handle 8 is stopped being pressed, the power switch 4 is turned off, and the spinning machine stops working.

After the use, because the front end cover 12 is in threaded connection with the handheld insulating shell 1, the front end cover 12 can be unscrewed easily for cleaning or replacement.

Claims

1. The utility model provides a supplementary electrostatic spinning facial mask appearance of portable air current which characterized in that: the device is provided with a handheld insulating shell, a dry battery pack, a power supply lead, a power supply switch, a conversion lead, a high-voltage converter, a high-voltage lead, an airflow handle, an upper end cover, an air hole, a liquid storage bottle, a front end cover, a wire outlet hole, an airflow hole, a metal catheter, blades, a blade shaft and a gear box; the power switch is fixed on the outer side of the handheld insulating shell; the dry battery pack, the high-voltage converter and the liquid storage bottle are fixed on the inner side of the handheld insulating shell; the dry battery pack is connected with a power wire for the power switch; the power switch is connected with the high-voltage converter through a conversion lead; the high-voltage converter is connected with the metal liquid guide pipe through a high-voltage lead; the solution for preparing the facial mask is stored in the liquid storage bottle; the upper end of the liquid storage bottle is provided with an upper end cover, and the upper end cover is provided with an air hole; one end of the metal liquid guide pipe is connected to the lower end of the liquid storage bottle, and the other end of the metal liquid guide pipe is connected to the front end of the handheld insulating shell, so that a flow channel is provided for the solution in the liquid storage bottle; the front end cover is provided with a screw outlet hole, is internally provided with threads and is in threaded connection with the handheld insulating shell; the front end of the handheld insulating shell is provided with an airflow hole; the airflow handle is connected with the gear box; one end of the blade shaft is connected with a gear in the gear box, and the other end of the blade shaft is connected with the blade; the gear set consists of a large straight bevel gear, a small straight bevel gear, a cylindrical gear, an extension spring, a spring fixing shaft, a central rotating shaft and a gear central shaft; the spring fixing shaft, the central rotating shaft and the gear central shaft are all fixed on the inner side of the handheld insulating shell; the air flow handle is fixed on the central rotating shaft and can rotate around the central rotating shaft; the front end of the airflow handle is provided with a small number of gear teeth which are meshed with the cylindrical gear; the cylindrical gear and the large straight bevel gear are coaxially arranged on a gear central shaft and are fixed together; the large straight bevel gear is meshed with the small straight bevel gear; the blade shaft is used as a central shaft of the small straight bevel gear and is arranged on the small straight bevel gear; one end of the extension spring is connected to the central rotating shaft, and the other end of the extension spring is fixed on the spring fixing shaft; the upper end cover is made of an elastic body, the middle of the upper end cover is provided with an air hole, the thickness of the upper end cover is increased from the middle to the edge in sequence, and the opening and the closing of the air hole are realized by utilizing the pressure difference between the inside and the outside of the upper end cover, so that the liquid in the liquid storage bottle can be conveyed to the wire outlet hole through the metal liquid guide pipe under the action of the self weight and the atmospheric pressure.

2. The portable airflow-assisted electrospinning mask machine of claim 1, wherein: the front end cover is uniformly distributed with filament outlet holes, fibers are finally generated from the filament outlet holes, and the front end cover is in threaded connection with the handheld insulating shell.

3. The portable airflow-assisted electrospinning mask machine of claim 1, wherein: airflow holes are uniformly distributed at the front end of the handheld insulating shell, and a metal liquid guide pipe is arranged in a central hole.

4. The portable airflow-assisted electrospinning mask machine of claim 1, wherein: the metal liquid guide pipe has a certain inclination angle and becomes thinner at a position closer to the liquid outlet.