Handheld air pressure type semi-automatic electrostatic spinning gun

Abstract

The utility model provides a handheld air pressure type semi-automatic electrostatic spinning gun. The handheld air pressure type semi-automatic electrostatic spinning gun comprises a liquid containing cabin, a pressurizing device, a clamping pin, a spinning needle head and an electrostatic high-voltage generator. The liquid containing bin is located at the top end of the gun body, the pressurizing device is located on the upper portion of the liquid containing bin, the clamping pin is located between the liquid containing bin and the spinning needle and controls communication between the liquid containing bin and the spinning needle, and the electrostatic high-voltage generator is connected with a power switch used for controlling the spinning gun to work. The equipment is improved on the basis of traditional manual liquid supply spinning equipment, an air pressure type liquid supply mode is adopted, and compared with an injector, internal residual air cannot be discharged along with a spinning solution to form unstable jet flow during spinning in an external liquid adding mode; single high-voltage power supply is combined with a mechanical liquid supply mode, a high-voltage output negative electrode is connected with a human body through a battery cover, the anti-interference capacity of the system is improved, the spinning capacity is enhanced, a needle head and an electrostatic high-voltage generator are designed in a replaceable mode, and the high-voltage power and the liquid flow speed can be adapted according to different requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic spinning, in particular to a handheld pneumatic semi-automatic electrostatic spinning gun. Background Art

[0002] Electrospinning is a special form of electrostatic atomization of polymer fluids. It uses the Coulomb force in a strong electric field to spray and spin charged polymer solutions or melts to form fiber filaments. In this process, the solution is stretched into fibers from the Taylor cone tip of the nozzle under the action of the electric field, and finally forms nanometer to micrometer-level fibers on the receiving device. This technology is widely used in the preparation of high-performance nanofiber materials. It has the advantages of simple equipment, low cost, strong controllability, etc., and has broad application prospects.

[0003] There is a portable electrospinning device in the prior art, such as a portable handheld electrospinning device disclosed in Chinese patent document CN 218666427U, which includes a shell, a flexible liquid storage part, an extrusion-type liquid supply mechanism, a spinning jet mechanism, a power supply and a high-voltage direct current generating mechanism. The extrusion-type liquid supply mechanism is used to extrude the flexible liquid storage part, so that the flexible liquid storage part is deformed, so that the spinning liquid is supplied to the spinning nozzle through the conductive joint, and is ejected through the nozzle. Although the extrusion liquid supply method can effectively reduce the occupied space of the internal structure of the shell compared to the previous liquid supply method using a linear module to drive the syringe, the above-mentioned extrusion liquid supply type electrospinning device still uses a drive motor and a screw for liquid supply, but only changes the liquid storage method, and does not achieve the purpose of simplifying the structure and improving portability.

[0004] In view of this, it is necessary to improve the liquid supply module of the electrospinning device in the prior art to solve the above problems. Utility Model Content

[0005] The utility model aims to disclose a hand-held pneumatic semi-automatic electrostatic spinning gun, which pressurizes the liquid tank through a handle and realizes liquid supply by using the pressure difference. The high voltage output by the built-in electrostatic high-voltage generator is applied to the spinning needle, and the liquid flowing through the spinning needle carries the electrostatic high voltage to form an electrostatic spinning fiber membrane.

[0006] To achieve the above-mentioned purpose, the utility model provides a handheld pneumatic semi-automatic electrostatic spinning gun, comprising a liquid tank, a pressurizing device, a bayonet, a spinning needle and an electrostatic high-voltage generator; the liquid tank is located at the top of the gun body, the pressurizing device is located at the upper part of the liquid tank, the bayonet is located between the liquid tank and the spinning needle and controls the connection between the liquid tank and the spinning needle, the electrostatic high-voltage generator is connected to the spinning needle and is connected to a power switch for controlling the operation of the spinning gun.

[0007] In some embodiments, a pressure relief control device is provided below the bayonet.

[0008] In some embodiments, a liquid filling port is provided on the liquid filling tank, a liquid outlet pipe is provided at the bottom of the liquid filling tank, and the other end of the liquid outlet pipe is connected to a pressure relief control device.

[0009] In some embodiments, the pressurizing device is installed inside the liquid tank, the upper end of the pressurizing device is a pressurizing handle, and the lower end is a cylindrical structure. A piston is provided below the pressurizing handle, and a rubber ring is provided on the outside of the piston; an air chamber is formed below the piston and the cylindrical structure, and a one-way valve is provided at the bottom of the cylinder.

[0010] In some embodiments, a bayonet edge is provided at the bottom of the bayonet, an arc-shaped protrusion is provided on the outer side of the bayonet edge, and the bayonet is inserted into the pressure relief control device.

[0011] In some embodiments, a spring and a pressure block are provided in the pressure relief control device, wherein the upper end of the spring is connected to the bottom of the bayonet, and the lower end of the spring is connected to the pressure block, and the pressure block is located above the liquid outlet pipe.

[0012] In some embodiments, a limit block is provided on the side wall of the pressure relief control device. When the bayonet moves downward and drives the edge of the bayonet to pass over the limit block, the bayonet is rotated so that the arc-shaped protrusion is pressed against the limit block to achieve a spring compression state.

[0013] In some embodiments, the positive connector of the electrostatic high voltage generator is connected to the spinning needle through a front conductive head, and the negative connector of the electrostatic high voltage generator is connected to a power source.

[0014] In some embodiments, a protective cover is provided outside the spinning needle.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the equipment is improved on the basis of the traditional manual liquid supply spinning equipment, and adopts a pneumatic liquid supply method. Compared with the external liquid addition method of the syringe, the internal residual air will not be discharged along with the spinning liquid to form an unstable jet during spinning; a single high-voltage power supply combined with a mechanical liquid supply method is adopted, and the high-voltage output negative electrode is connected to the human body through the battery cover, which improves the system's anti-interference ability and enhances the spinning ability. The needle and electrostatic high-voltage generator are replaceable in design, which can be adapted to high voltage electricity and liquid flow rate according to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a left view of the handheld pneumatic semi-automatic electrospinning gun shown in the utility model;

[0017] Figure 2 It is a front view of the handheld pneumatic semi-automatic electrospinning gun shown in the utility model;

[0018] Figure 3This is a schematic diagram of the internal structure of a handheld pneumatic semi-automatic electrospinning gun shown in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the pressurizing device shown in the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the pressure relief control device shown in the utility model;

[0021] Figure 6 It is a top view of the bayonet shown in the utility model. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0023] like Figure 1-6 As shown, a handheld pneumatic semi-automatic electrostatic spinning gun includes a liquid loading chamber 10, a pressurizing device 3, a latch 4, a spinning needle 7 and an electrostatic high-voltage generator 15; the liquid loading chamber 10 is located at the top of a gun body 1, the pressurizing device 3 is located at the upper part of the liquid loading chamber 10, the latch 4 is located between the liquid loading chamber 10 and the spinning needle 7 and controls the connection between the liquid loading chamber 10 and the spinning needle 7, and the electrostatic high-voltage generator 15 is connected to a power switch 8 for controlling the operation of the spinning gun.

[0024] A pressure relief control device 13 is provided below the latch 4. A liquid filling port 11 is provided on the liquid filling chamber 10, and a liquid outlet pipe 12 is provided at the bottom of the liquid filling chamber 10, and the other end of the liquid outlet pipe 12 is connected to the pressure relief control device 13. The pressurizing device 3 is installed inside the liquid filling chamber 10, and the upper end of the pressurizing device 3 is a pressurizing handle 9, and the lower end is a cylindrical structure. A piston 21 is provided below the pressurizing handle 9, and a rubber ring 20 is provided on the outside of the piston; the piston 21 and the cylindrical structure form an air chamber 22 below, and a one-way valve 23 is provided at the bottom of the cylindrical structure.

[0025] The bottom of the bayonet 4 is provided with a bayonet edge 24, and the outer side of the bayonet edge 24 is provided with an arc-shaped protrusion 241, and the bayonet 4 is inserted into the pressure relief control device 13. The pressure relief control device 13 is provided with a spring 26 and a pressure block 27, the upper end of the spring 26 is connected to the bottom of the bayonet 4, and the lower end of the spring 26 is connected to the pressure block 27, and the pressure block 27 is located above the liquid outlet pipe 12. The side wall of the pressure relief control device 13 is provided with a limit block 131, and when the bayonet 4 moves downward and drives the bayonet edge 24 to pass over the limit block 131, the bayonet 4 is rotated so that the arc-shaped protrusion 241 is pressed against the limit block 131, and the spring 26 is pressed.

[0026] When the pressure relief control device 13 is working, the latch 4 is pressed down, the spring 26 is in a compressed state, the pressing block 27 descends, and the liquid outlet pipe 12 is sealed; when the latch 4 is pressed again and rotated, the spring 26 rebounds, the pressing block 27 rises, and the liquid outlet pipe 12 is opened.

[0027] The positive connector 16 of the electrostatic high voltage generator 15 is connected to the spinning needle 7 through the front conductive head 14, and the negative connector 17 of the electrostatic high voltage generator 15 is connected to the power supply. The spinning needle 7 is provided with a protective cover 5.

[0028] The housing 2 of the liquid tank 10 is mounted on the upper end of the liquid tank 10 by snap fastening, and the protective cover 5 and the spinning needle 7 are mounted on the front end of the device by screw lock. The battery cover 6 is detachably mounted on the handle side of the gun body 1, and its interior is connected to the negative electrode of the battery.

[0029] The liquid tank 10 is made of high temperature and corrosion resistant material, and different spinning solutions can be added according to the needs. When the same spinning solution is used for spinning, the spinning solution only needs to be added through the liquid filling port 11; if different spinning solutions are replaced, the shell 2 of the liquid tank 10 needs to be disassembled for cleaning.

[0030] The upper end of the pressurizing device 3 is a pressurizing handle 9. When the pressurizing handle 9 is lifted, the rubber ring 20 moves downward to open the vent 19, the piston 21 moves upward, the air in the air chamber 22 forms a negative pressure, the air enters the air chamber 22 from the vent 19, and the one-way valve 23 is closed by pressure. When the pressurizing handle 9 is pressed, the piston 21 moves downward, the rubber ring 20 moves upward to block the vent 19, the air in the air chamber 22 is compressed to form a large positive pressure, the one-way valve 23 is pushed open, the air is compressed into the liquid tank 10 and accumulated on the top, and the pressurizing action is completed.

[0031] Working principle: When in use, first check whether the latch 4 and the power switch 8 of the electrostatic high-voltage generator 15 are in the off state, then add the spinning liquid into the liquid loading chamber 10, repeatedly press the pressurizing handle 9 to pressurize the liquid loading chamber 10, turn on the power switch 8, pop up the latch 4, and the gas in the liquid loading chamber 10 pushes the spinning liquid to be evenly ejected from the spinning needle 7, and the electrospun fiber is formed under the action of high-voltage static electricity.

[0032] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A handheld pneumatic semi-automatic electrospinning gun, characterized in that: The invention comprises a liquid loading chamber (10), a pressurizing device (3), a latch (4), a spinning needle (7) and an electrostatic high-voltage generator (15); the liquid loading chamber (10) is located at the top of a gun body (1), the pressurizing device (3) is located at the upper part of the liquid loading chamber (10), the latch (4) is located between the liquid loading chamber (10) and the spinning needle (7) and controls the connection between the liquid loading chamber (10) and the spinning needle (7), and the electrostatic high-voltage generator (15) is connected to the spinning needle (7) and is connected to a power switch (8) for controlling the operation of the spinning gun.

2. The handheld pneumatic semi-automatic electrospinning gun according to claim 1, characterized in that: A pressure relief control device (13) is provided below the latch (4).

3. The handheld pneumatic semi-automatic electrospinning gun according to claim 2, characterized in that: The liquid loading chamber (10) is provided with a liquid loading port (11), the bottom of the liquid loading chamber (10) is provided with a liquid outlet pipe (12), and the other end of the liquid outlet pipe (12) is connected to a pressure relief control device (13).

4. The handheld pneumatic semi-automatic electrospinning gun according to claim 3, characterized in that: The pressurizing device (3) is installed inside the liquid storage tank (10). The upper end of the pressurizing device (3) is a pressurizing handle (9), and the lower end is a cylindrical structure. A piston (21) is provided below the pressurizing handle (9), and a rubber ring (20) is provided on the outer side of the piston. An air chamber (22) is formed below the piston (21) and the cylindrical structure, and a one-way valve (23) is provided at the bottom of the cylindrical structure.

5. The handheld pneumatic semi-automatic electrospinning gun according to claim 3, characterized in that: The bottom of the bayonet (4) is provided with a bayonet edge (24), the outer side of the bayonet edge (24) is provided with an arc-shaped protrusion (241), and the bayonet (4) is inserted into the pressure relief control device (13).

6. The handheld pneumatic semi-automatic electrospinning gun according to claim 5, characterized in that: The pressure relief control device (13) is provided with a spring (26) and a pressure block (27). The upper end of the spring (26) is connected to the bottom of the bayonet (4), and the lower end of the spring (26) is connected to the pressure block (27). The pressure block (27) is located above the liquid outlet pipe (12).

7. The handheld pneumatic semi-automatic electrospinning gun according to claim 6, characterized in that: A limit block (131) is provided on the side wall of the pressure relief control device (13); when the bayonet (4) moves downward and drives the bayonet edge (24) to pass over the limit block (131), the bayonet (4) is rotated so that the arc-shaped protrusion (241) is pressed against the limit block (131), thereby achieving a pressed state of the spring (26).

8. The handheld pneumatic semi-automatic electrospinning gun according to claim 1, characterized in that: The positive connector (16) of the electrostatic high-voltage generator (15) is connected to the spinning needle (7) through the front conductive head (14), and the negative connector (17) of the electrostatic high-voltage generator (15) is connected to a power source.

9. The handheld pneumatic semi-automatic electrospinning gun according to claim 8, characterized in that: The spinning needle head (7) is provided with a protective cover (5) outside.

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