Handheld portable electrostatic spinning device

Abstract

The utility model discloses a handheld portable electrostatic spinning device which comprises a shell, a rechargeable battery, a device switch, an LED work indicating lamp, an injector, a boosting module, a stainless steel needle head, a high-voltage positive electrode and a high-voltage negative electrode. The shell is in a pistol shape and comprises a lower section shell, a middle section shell and a front section shell which are detachably connected with one another, and the middle section shell is integrally formed by a bent part and an injector support part arranged above the bent part; a hollow stainless steel needle head is arranged at the front end of the injector, the high-voltage positive electrode is arranged on the stainless steel needle head, the front end of the stainless steel needle head penetrates through the front-section shell, and the high-voltage negative electrode is arranged outside the shell; the positive electrode of the boosting module is electrically connected with the high-voltage positive electrode, and the negative electrode of the boosting module is electrically connected with the high-voltage negative electrode. According to the handheld portable electrostatic spinning device, the spinning solution is directly sprayed on the screen window to form a film, the operation is simple and convenient, and the handheld portable electrostatic spinning device has good film-forming property.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic spinning, and in particular provides a handheld portable electrostatic spinning device. Background Art

[0002] Electrospinning technology is one of the most efficient and fast methods for preparing nanofibers. The principle of electrospinning is that the polymer solution is subjected to a high-voltage electrostatic field, so that the charged polymer droplets at the needle tip change from a sphere to a cone, namely a Taylor cone. The polymer is accelerated at the top of the Taylor cone. When the electric field force is greater than the surface tension of the polymer droplets, a jet stream is formed. While being sprayed to the receiving device, the solvent evaporates and finally solidifies into fibers of different shapes and sizes. With the development of electrospinning technology, it plays an increasingly important role in the field of air filtration and protection.

[0003] At present, most traditional electrospinning equipment is large desktop equipment, which is large in size and inconvenient to move. It has great limitations and relatively single application. Existing portable electrospinning equipment is mainly used in biomedicine, and there is a lack of suitable portable equipment for air filtration protection. The current existing use method is to use electrospinning equipment to prepare nanofiber membranes and transfer the prepared nanofiber membranes to the use site. The intermediate process is relatively cumbersome, so a handheld portable electrospinning device is proposed to make it easy to move and operate. It can be directly sprayed on screens and other places to prepare nanofiber air filters to filter the air. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a handheld portable electrospinning device to solve the shortcomings of the existing electrospinning equipment. The handheld portable electrospinning device of the utility model is used to spray the spinning liquid directly onto the screen to form a film. The operation is simple and convenient and has good film-forming properties.

[0005] The technical scheme of the utility model is: a handheld portable electrospinning device, comprising: a shell 1, a rechargeable battery 2, a device switch 3, an LED working indicator light 4, a syringe 5, a boost module 6, a stainless steel needle 7, a high-voltage positive electrode 8 and a high-voltage negative electrode 9; the shell 1 is in the shape of a pistol, comprising a lower shell 1a, a middle shell and a front shell 1c that can be detachably connected to each other, the middle shell is formed by a bending portion 1b and a syringe bracket portion 1d arranged above it in one piece; the rechargeable battery 2 and the boost module 6 are correspondingly arranged in the lower shell 1a and the bending portion 1b, the bending portion 1b is provided with a rechargeable battery 2 and a boost module 6, and the bending portion 1b is provided with a rechargeable battery 2 and a boost module 6. A device switch 3 and an LED working indicator light 4 are provided on the edge side of the part 1b. The syringe 5 is installed in the syringe bracket part 1d from back to front. A hollow stainless steel needle 7 is provided at the front end of the syringe 5. The high-voltage positive electrode 8 is provided on the stainless steel needle 7. The front end of the stainless steel needle 7 penetrates the front section shell 1c, and the high-voltage negative electrode 9 is provided outside the shell 1; the LED working indicator light 4 is connected in parallel with the boost module 6 and is electrically connected to the rechargeable battery 2 and the device switch 3, the positive electrode of the boost module 6 is electrically connected to the high-voltage positive electrode 8, and the negative electrode of the boost module 6 is electrically connected to the high-voltage negative electrode 9.

[0006] Furthermore, the high-voltage positive electrode 8 is a metal piece with holes, which is sleeved on the stainless steel needle 7 and contacts therewith.

[0007] Furthermore, the high voltage negative electrode 9 is a wire alligator clip.

[0008] Furthermore, the lower shell 1a, the middle shell and the front shell 1c are snap-connected.

[0009] Furthermore, the syringe 5 is snap-fitted to the syringe support portion 1d.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model has a small size and light weight, uses a rechargeable battery to power the device, does not require external current, is easy to carry and can be spun at any time.

[0012] 2. Compared with desktop equipment, it has a wider range of applications and is more convenient to operate. It can be used to spray nanofibers on items such as screens at home.

[0013] 3. Control the injection of the syringe manually according to the actual operating conditions to achieve the appropriate injection speed and achieve high-quality spinning.

[0014] 4. The utility model can form a nanofiber film by spraying on the screen window. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the appearance diagram of the utility model;

[0016] Figure 2 It is the internal structure diagram of the utility model;

[0017] Figure 3 This is the circuit connection diagram of the utility model;

[0018] In the figure: 1, housing; 1a, lower housing; 1b, bending part; 1c, front housing; 1d, syringe support; 2, rechargeable battery; 3, device switch; 4, LED working indicator; 5, syringe; 6, boost module; 7, stainless steel needle; 8, high voltage positive electrode; 9, high voltage negative electrode; DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 , 2 As shown, a handheld portable electrospinning device can be operated to spray nanofibers toward a receiving device, comprising: a housing 1, a rechargeable battery 2, a device switch 3, an LED working indicator light 4, a syringe 5, a boost module 6, a stainless steel needle 7, a high-voltage positive electrode 8 and a high-voltage negative electrode 9.

[0021] The shell 1 is in the shape of a pistol, and comprises a lower shell 1a, a middle shell and a front shell 1c which are detachably connected to each other, wherein the middle shell is integrally formed by a bending portion 1b and a syringe support portion 1d arranged above it; wherein the lower shell 1a, the middle shell and the front shell 1c can be detachably connected by snaps; the shell 1 is in the shape of a pistol, which is convenient for people to hold and operate, and also makes the device more compact.

[0022] A rechargeable battery 2 and a boost module 6 are correspondingly arranged in the lower shell 1a and the bending part 1b, a device switch 3 and an LED working indicator light 4 are arranged on the edge side of the bending part 1b, and the syringe 5 is installed in the syringe bracket part 1d from back to front. A hollow stainless steel needle 7 is arranged at the front end of the syringe 5, and a high-voltage positive electrode 8 is arranged on the stainless steel needle 7. The front end of the stainless steel needle 7 penetrates the front shell 1c, and the high-voltage negative electrode 9 is arranged outside the outer shell 1; the LED working indicator light 4 is connected in parallel with the boost module 6 and is electrically connected to the rechargeable battery 2 and the device switch 3, the positive electrode of the boost module 6 is electrically connected to the high-voltage positive electrode 8, and the negative electrode of the boost module 6 is electrically connected to the high-voltage negative electrode 9.

[0023] Among them: the rechargeable battery 2 is used to power the entire device, the rechargeable battery 2 is electrically connected to the device switch 3, the device switch 3 controls the operation and shutdown of the device, the LED working indicator 4 is connected in parallel with the boost module 6, the rechargeable battery 2 provides power for the LED working indicator 4 and the boost module 6, the LED working indicator 4 is used to indicate the working state of the device, when the LED working indicator 4 is on, it means that the device is in the power-on state, when the LED working indicator 4 is off, it means that the device enters the power-off state; the positive electrode of the boost module 6 is electrically connected to the high-voltage positive electrode 8, and the negative electrode of the boost module 6 is electrically connected to the high-voltage negative electrode 9. The boost module 6 is used to realize the formation of a high-voltage electrostatic field between the stainless steel needle 7 and the receiving device; the syringe 5 is connected to the stainless steel needle 7, and after the solution is filled in the syringe 5, the stainless steel needle 7 is installed and placed in the syringe bracket part 1d, and there is a buckle in the syringe bracket part 1d to fix the syringe 5; the stainless steel needle 7 is installed with a high-voltage positive electrode 8, and the high-voltage positive electrode 8 is a metal part with a hole, which is mounted on the stainless steel needle 7 and contacts with it, and the high-voltage negative electrode 9 is a wire crocodile clip.

[0024] When the utility model is working, the syringe 5 filled with polyvinyl alcohol (PVA) spinning solution is installed with the stainless steel needle 7, the syringe 5 is installed in the syringe bracket part 1d, the high-voltage negative electrode 9 is clamped to the metal screen, the device switch 3 is pressed, the LED working indicator 4 lights up, indicating that the device has entered the power-on state, and a high-voltage electrostatic field is formed between the stainless steel needle 7 and the metal screen connected to the high-voltage negative electrode 9, which promotes the push injection of the syringe 5, and the spinning solution is ejected from the stainless steel needle 7, and a jet is formed under the action of the high-voltage electrostatic field. After splitting, stretching and curing, it is finally deposited on the metal screen connected to the high-voltage negative electrode 9 to form a PVA nanofiber membrane; when the human push injection stops, the spinning solution stops flowing out, the device switch 3 is turned off, and the electrostatic spinning device is shut down.

[0025] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A portable handheld electrospinning device, characterized in that: include: A housing (1), a rechargeable battery (2), a device switch (3), an LED working indicator light (4), a syringe (5), a boost module (6), a stainless steel needle (7), a high-voltage positive electrode (8) and a high-voltage negative electrode (9); the housing (1) is in the shape of a pistol, and comprises a lower housing (1a), a middle housing and a front housing (1c) which are detachably connected to each other, the middle housing being integrally formed by a bending portion (1b) and a syringe support portion (1d) arranged above the middle housing; the rechargeable battery (2) and the boost module (6) are arranged in the lower housing (1a) and the bending portion (1b) respectively, and the device switch (3) and the boost module (6) are arranged on the edge side of the bending portion (1b) The LED working indicator light (4) is installed in the syringe support part (1d) from back to front. A hollow stainless steel needle (7) is provided at the front end of the syringe (5). The high-voltage positive electrode (8) is provided on the stainless steel needle (7). The front end of the stainless steel needle (7) penetrates the front shell (1c). The high-voltage negative electrode (9) is provided outside the shell (1). The LED working indicator light (4) is connected in parallel with the boost module (6) and is electrically connected to the rechargeable battery (2) and the device switch (3). The positive electrode of the boost module (6) is electrically connected to the high-voltage positive electrode (8), and the negative electrode of the boost module (6) is electrically connected to the high-voltage negative electrode (9).

2. A portable handheld electrospinning device according to claim 1, characterized in that: The high-voltage positive electrode (8) is a metal piece with a hole, which is sleeved on the stainless steel needle (7) and in contact with it.

3. A portable handheld electrospinning device according to claim 1, characterized in that: The high voltage negative electrode (9) is a wire alligator clip.

4. A portable handheld electrospinning device according to claim 1, characterized in that: The lower shell (1a), the middle shell and the front shell (1c) are snap-connected.

5. A portable handheld electrospinning device according to claim 1, characterized in that: The syringe (5) is snap-fitted to the syringe support portion (1d).

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