Liquid supply spray head mechanism and electrostatic spinning machine

Abstract

The utility model relates to a liquid supply nozzle mechanism and an electrostatic spinning machine, and the liquid supply nozzle mechanism comprises an outer shell which is enclosed to form a containing space; the conductive block is arranged in the accommodating space and is provided with an accommodating cavity, one side of the accommodating cavity is provided with a first opening communicated with the accommodating cavity, and the first opening is covered with a first cover; the electrode wires penetrate through the outer shell and the conductive block and pass through the accommodating cavity; the liquid supply head comprises a liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, and the input end of the liquid inlet pipe is externally connected to the liquid supply unit. By means of the arrangement, the two ends of the liquid supply head conduct liquid brushing operation at the same time, the spraying speed of spinning liquid is greatly increased, even distribution of the spinning liquid is guaranteed, and therefore the spinning quality and consistency are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrospinning field especially is a kind of liquid supply nozzle mechanism and electrospinning machine. BACKGROUND

[0002] In the electrospinning technical field, needleless electrospinning technology has attracted widespread attention and research interest in recent years due to its unique structural design and relatively simple operation process. This technology not only broadens the application range of electrospinning, but also brings innovative possibilities to multiple fields such as materials science.

[0003] However, in the actual production and application process, needleless electrospinning equipment often encounters a series of challenges, including instability of the liquid supply system, problems of solvent evaporation speed being too fast causing nozzle blockage, limited spinning yield, and difficulty in meeting large-scale production needs. These problems to a large extent limit the further popularization and application of needleless electrospinning technology. UTILITY MODEL CONTENTS

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the instability of the liquid supply system and the problem of solvent evaporation speed being too fast causing nozzle blockage in the prior art, thereby providing a liquid supply nozzle mechanism and electrospinning machine.

[0005] To solve the above technical problems, the utility model provides a liquid supply nozzle mechanism, comprising:

[0006] An outer shell forms an accommodation space;

[0007] A metal block is arranged in the accommodation space, and is provided with an accommodation cavity. A first opening is formed on one side of the accommodation cavity, and a first cover is arranged on the first opening.

[0008] An electrode wire is arranged in the outer shell and the metal block and passes through the accommodation cavity.

[0009] A liquid supply head comprises an inlet pipe, a first outlet pipe and a second outlet pipe. The input end of the inlet pipe is connected to a liquid supply unit. The input ends of the first outlet pipe and the second outlet pipe are respectively connected to the output end of the inlet pipe. The output ends of the first outlet pipe and the second outlet pipe are respectively arranged on both sides of the electrode wire.

[0010] In one embodiment of the utility model, the outer shell is provided with a second opening, and the accommodation space is connected to the outside through the second opening. The second opening is detachably covered with a second cover.

[0011] In an embodiment of the utility model, the first cover, the shell and the second cover form a spacing space, the shell is provided with a first liquid inlet hole communicated with the spacing space, the input end of the liquid inlet pipe is located in the spacing space, the first cover is provided with a second liquid inlet hole matched with the liquid inlet pipe, and the output end of the liquid inlet pipe extends into the accommodating cavity through the second liquid inlet hole.

[0012] In an embodiment of the utility model, the output ends of the first liquid outlet pipe and the second liquid outlet pipe are located on the opposite sides of the electrode wire in the horizontal direction, and the axial directions of the first liquid outlet pipe and the second liquid outlet pipe are perpendicular to the axial direction of the electrode wire.

[0013] In an embodiment of the utility model, the first liquid outlet pipe and the second liquid outlet pipe have a gap with the electrode wire, and the output ends of the first liquid outlet pipe and the second liquid outlet pipe are respectively provided with arc-shaped parts matched with the curvature of the electrode wire.

[0014] In an embodiment of the utility model, the electrode wire is provided with a plurality of protruding parts along the length direction thereof, the sizes of the protruding parts gradually decrease from the electrode wire to the direction away from the electrode wire, and the protruding parts have pointed ends.

[0015] In an embodiment of the utility model, the shell and the bottom of the metal block are respectively provided with an outer reflux hole and an inner reflux hole communicated with each other, and the accommodating cavity is communicated with the outside through the outer reflux hole and the inner reflux hole.

[0016] In an embodiment of the utility model, the first cover is provided with a clamping groove matched with the liquid inlet pipe.

[0017] In an embodiment of the utility model, the metal block and the shell are respectively provided with an inner electrode hole and an outer electrode hole, the accommodating cavity is communicated with the outside through the inner electrode hole and the outer electrode hole, the heights of the inner electrode hole and the outer electrode hole are greater than those of the outer reflux hole and the inner reflux hole, and the electrode wire passes through the shell and the metal block through the inner electrode hole and the outer electrode hole.

[0018] The utility model also provides a kind of electrospinning machine, including the liquid supply nozzle mechanism of above.

[0019] The above technical scheme of the utility model has the following advantages compared with prior art:

[0020] 1, double-end synchronous brush liquid technology: liquid supply head two ends carry out brush liquid operation simultaneously, not only greatly improves the spinning liquid spraying speed, but also ensures the uniform distribution of spinning liquid, so as to ensure the quality and consistency of spinning.

[0021] 2. Sawtooth wire design: by adopting the sawtooth electrode wire structure, the tip can more efficiently gather electric charges, and the charge distribution and fiber formation efficiency in the electrospinning process are significantly enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the content of the utility model more easily be clearly understood, the following is according to the specific embodiment of the utility model and combining with the drawings, the utility model is further detailed, wherein

[0023] Figure 1 It is the explosion view of the liquid supply nozzle mechanism of the utility model;

[0024] Figure 2 It is the sectional view of the liquid supply nozzle mechanism of the utility model Figure 1 ;

[0025] Figure 3 It is the sectional view of the liquid supply nozzle mechanism of the utility model Figure 2 ;

[0026] Figure 4 It is the structure schematic view of the liquid supply head of the utility model.

[0027] The description of the drawing mark of the specification is as follows: 1, second cover;2, outer shell;3, first cover;4, electrode wire;5, liquid supply head;51, liquid inlet pipe;52, first liquid outlet pipe;53, second liquid outlet pipe;54, arc-shaped part;6, metal block;7, inner electrode hole;8, outer electrode hole;9, outer reflux hole;10, clamping groove;11, containing space;12, inner reflux hole. DETAILED DESCRIPTION

[0028] The utility model is further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0029] Embodiment 1

[0030] Referring to Figures 1-4 The liquid supply nozzle mechanism of the utility model includes:

[0031] The outer shell 2 is enclosed to form the containing space 11;

[0032] The metal block 6 is arranged in the containing space 11, and the containing cavity is provided with the first opening communicated with the containing cavity on one side, and the first opening is provided with the first cover 3;

[0033] The electrode wire 4 is arranged in the outer shell 2 and the metal block 6 and passes through the containing cavity;

[0034] The liquid supply head 5 comprises: a liquid inlet pipe 51, a first liquid outlet pipe 52 and a second liquid outlet pipe 53, the input end of the liquid inlet pipe 51 is circumscribed to the liquid supply unit, the input ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are communicated to the output end of the liquid inlet pipe 51 respectively, and the output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are extended to the containing cavity and arranged on the two sides of the electrode wire 4 respectively.

[0035] The liquid supply head mechanism, the liquid supply unit transports the liquid to the liquid supply head 5 through the liquid inlet pipe 51. The liquid flows in the liquid inlet pipe 51, and after reaching the output end of the liquid inlet pipe 51, the liquid is uniformly distributed into the first liquid outlet pipe 52 and the second liquid outlet pipe 53 due to the input ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 being communicated to the output end of the liquid inlet pipe 51 respectively. The liquid flows out of the output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 respectively and is arranged on the two sides of the electrode wire 4 respectively. The electrode wire 4 generates an electric field around it after being electrified, and the liquid forms a Taylor cone and extends to obtain a fiber filament under the action of the electric field force. The shell body 2 and the first cover 3 play the roles of protection and sealing, ensure that the liquid is processed in a closed environment, and improve the work efficiency and effect. The first liquid outlet pipe 52 and the second liquid outlet pipe 53 simultaneously perform liquid brushing operation at the two ends of the electrode wire 4, which not only greatly improves the spinning liquid spraying speed, but also ensures the uniform distribution of the spinning liquid, thereby ensuring the quality and consistency of spinning.

[0036] Referring to Figure 1 The shell body 2 is provided with a second opening, the containing space 11 is communicated to the outside through the second opening, and the second opening is detachably covered by the second cover 1. In the normal working process of the liquid supply head mechanism, the second cover 1 is in the installed state, the second opening is sealed, the containing space 11 forms a relatively closed environment, the liquid and components in the interior can work normally, are not disturbed by the external environment and are reduced in volatilization.

[0037] Referring to Figure 2As shown, the first cover 3, the outer shell 2 and the second cover 1 form a spacing space, the outer shell 2 is provided with a first liquid inlet hole communicating with the spacing space, the input end of the liquid inlet pipe 51 is located in the spacing space, the first cover 3 is provided with a second liquid inlet hole matched with the liquid inlet pipe 51, the output end of the liquid inlet pipe 51 extends to the containing cavity through the second liquid inlet hole, the liquid inlet pipe 51 and the input ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are accommodated in the spacing space, the first cover 3, the outer shell 2 and the second cover 1 form a spacing space, the outer shell 2 is provided with a first liquid inlet hole communicating with the spacing space, the input end of the liquid inlet pipe 51 is located in the spacing space, the first cover 3 is provided with a second liquid inlet hole matched with the liquid inlet pipe 51, the output end of the liquid inlet pipe 51 extends to the containing cavity through the second liquid inlet hole, in order to ensure the sealing, a sealing gasket or sealing glue can be arranged between the first liquid inlet hole and the second liquid inlet hole and the liquid inlet pipe 51.

[0038] Referring to Figure 2 , Figure 4 As shown, the output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are respectively located on the two sides opposite to the horizontal direction of the electrode wire 4, the axis directions of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are perpendicular to the axis direction of the electrode wire 4, and the liquid flows out from the output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 after entering the first liquid outlet pipe 52 and the second liquid outlet pipe 53 through the liquid inlet pipe 51. Since the output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are respectively located on the two sides opposite to the horizontal direction of the electrode wire 4, the liquid flows to the electrode wire 4 from the two sides at the same time, forming uniform liquid distribution around the electrode wire 4, and improving the spinning liquid spraying speed, so that uniform and slender fibers can be formed, thereby improving the quality and efficiency of electrospinning.

[0039] Referring to Figure 3 As shown, the first liquid outlet pipe 52 and the second liquid outlet pipe 53 have a gap with the electrode wire 4, and the output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are respectively provided with arc-shaped parts 54 matched with the curvature of the electrode wire 4. Since there is a gap between the liquid outlet pipe and the electrode wire 4, the liquid has enough space to flow and distribute around the electrode wire 4 after flowing out. At the same time, the arc-shaped part 54 of the output end makes the liquid flow out in a direction matched with the curvature of the electrode wire 4, so that the liquid can be more uniformly attached to the surface of the electrode wire 4.

[0040] The electrode wire 4 is provided with a plurality of protrusions along its length direction, the size of the protrusions gradually decreases from the electrode wire 4 to the direction away from the electrode wire 4, and the protrusions have sharp ends. When the electrode wire 4 is electrified, charges will be distributed on the surface of the electrode wire 4. Due to the existence of the protrusions, especially the sharp end effect of the protrusions, the charges will gather at the sharp ends, so that the electric field intensity near the sharp ends is significantly enhanced. The surface of the electrode wire 4 is covered with dense sharp protrusions. Such design enables the metal wire to more effectively gather charges during spinning, thereby promoting the stable ejection of the spinning solution and making the spinning process more smooth and efficient.

[0041] Referring to Figure 3 As shown, the bottom of the outer shell 2 and the metal block 6 are respectively provided with outer return flow holes 9 and inner return flow holes 12 that are connected, and the accommodating cavity is connected with the outside through the outer return flow holes 9 and the inner return flow holes 12. During the working process of the liquid supply nozzle mechanism, when the liquid enters the accommodating cavity from the liquid inlet pipe 51, part of the liquid participates in the normal working process, such as specific physical or chemical changes under the action of an electric field. The excess liquid in the accommodating cavity or the liquid generated during the working process and needing to be discharged will flow to the bottom of the accommodating cavity due to the action of gravity. Then, the liquid enters the outer return flow holes 9 and the inner return flow holes 12 at the bottom of the outer shell 2 through the outer return flow holes 9 and the inner return flow holes 12 at the bottom of the metal block 6, and finally is discharged to a recycling container or a treatment system outside through the return flow pipes connected with the outer return flow holes 9 and the inner return flow holes 12. In this way, the liquid environment in the accommodating cavity is always stable, which provides a guarantee for the continuous and stable work of the device.

[0042] The first cover 3 is provided with a clamping groove 10 matched with the liquid inlet pipe 51, and the inner wall of the metal block 6 is respectively provided with limiting grooves matched with the first liquid outlet pipe 52 and the second liquid outlet pipe 53. The clamping groove 10 plays a first positioning and fixing role on the liquid inlet pipe 51. Then the first liquid outlet pipe 52 and the second liquid outlet pipe 53 are respectively placed in the limiting grooves in the inner wall of the metal block 6, and the limiting grooves limit the positions of the liquid outlet pipes, so that the output ends thereof are accurately located at the predetermined positions on both sides of the electrode wire 4.

[0043] Referring to Figure 2 As shown, the metal block 6 and the outer shell 2 are respectively provided with inner electrode holes 7 and outer electrode holes 8, and the accommodating cavity is connected with the outside through the inner electrode holes 7 and the outer electrode holes 8. The heights of the inner electrode holes 7 and the outer electrode holes 8 are greater than those of the outer return flow holes 9 and the inner return flow holes 12. The electrode wire 4 passes through the outer shell 2 and the metal block 6 through the inner electrode holes 7 and the outer electrode holes 8. Since the heights of the inner electrode holes 7 and the outer electrode holes 8 are greater than those of the outer return flow holes 9 and the inner return flow holes 12, the returned liquid will not contact the electrode wire 4, preventing problems such as short circuit and electric leakage caused by liquid conduction, and also reducing the corrosion and pollution of the liquid to the electrode wire 4, thereby ensuring the normal work of the electrode wire 4 and the stable operation of the device.

[0044] Embodiment Two

[0045] The embodiment provides an electrostatic spinning machine comprising a liquid supply nozzle mechanism as described in embodiment 1.

[0046] The electrostatic spinning machine described in the embodiment sets various spinning parameters such as solution flow rate, voltage value, and collection distance through the control unit. The solution in the solution storage tank is delivered to the liquid inlet pipe 51 of the liquid supply nozzle mechanism through the delivery pipeline by the liquid supply unit. The solution flows in the liquid inlet pipe 51, and after reaching the output end of the liquid inlet pipe 51, it is evenly distributed into the first liquid outlet pipe 52 and the second liquid outlet pipe 53 through the liquid supply head 5. The output ends of the first liquid outlet pipe 52 and the second liquid outlet pipe 53 spray the solution to the two sides of the electrode wire 4 in the containing cavity. Since the electrode wire 4 is connected to the high-voltage power generator, the electrified electrode wire 4 generates a strong electric field around it after being electrified. Under the action of the electric field force, the charged particles in the solution are attracted to the electrode wire 4. With the continuous spraying of the solution and the action of the electric field force, the solution is stretched into an elongated jet, and the solvent is rapidly volatilized in the air, finally forming a fiber. The fiber moves to the fiber collection device below under the guidance of the electric field, and is deposited on the surface of the collection device, completing the collection process of the fiber. The control unit monitors and adjusts the running state and parameters of each part in real time to ensure the stable progress of the spinning process. When the preset spinning time or fiber yield is reached, the equipment automatically stops running, and the operator can take out the collected fiber product for subsequent processing and application.

[0047] Through the improvement of the electrode wire 4 and the liquid supply nozzle structure, the performance of the needle-free electrostatic spinning equipment is improved. The metal electrode adopts a sawtooth-shaped electrode wire 4, and the surface of the electrode wire 4 is covered with dense sharp protrusions. Such design enables the electrode wire 4 to more effectively concentrate electric charges during the spinning process, thereby promoting the stable spraying of the spinning solution and making the spinning process smoother and more efficient. In addition, the design of the liquid supply head 5 is also optimized, and the two ends of the liquid supply head 5 simultaneously coat the electrode wire 4 with solution, ensuring uniform distribution of the solution on the electrode wire 4. This improvement not only further enhances the stability of the spinning process, but also helps to improve the quality and efficiency of the spinning. By fine-tuning the liquid supply and evaporation conditions, slow evaporation of the solvent is achieved, effectively avoiding the clogging problem of the nozzle caused by rapid evaporation of the solvent, and also significantly improving the spinning amount.

[0048] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A liquid supply shower mechanism characterized by, The utility model provides a liquid supply nozzle mechanism, comprising: An outer shell enclosing a containing space; A metal block disposed in the containing space, provided with a containing cavity, one side of the containing cavity being provided with a first opening communicating with the containing cavity, the first opening being covered with a first cover; An electrode wire passing through the outer shell and the metal block and extending through the containing cavity; A liquid supply head comprising a liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, the input end of the liquid inlet pipe being connected to a liquid supply unit, the input ends of the first liquid outlet pipe and the second liquid outlet pipe being respectively connected to the output end of the liquid inlet pipe, the output ends of the first liquid outlet pipe and the second liquid outlet pipe extending into the containing cavity and being respectively disposed on the two sides of the electrode wire.

2. A liquid supply nozzle mechanism according to claim 1, wherein: The outer shell is provided with a second opening, the containing space being communicated with the outside through the second opening, the second opening being detachably covered with a second cover.

3. A liquid supply nozzle mechanism according to claim 2, wherein: A spacing space is enclosed between the first cover, the outer shell and the second cover, the outer shell being provided with a first liquid inlet hole communicating with the spacing space, the input end of the liquid inlet pipe being located in the spacing space, the first cover being provided with a second liquid inlet hole adapted to the liquid inlet pipe, the output end of the liquid inlet pipe extending into the containing cavity through the second liquid inlet hole.

4. The liquid supply nozzle mechanism according to claim 1, characterized by: The output ends of the first liquid outlet pipe and the second liquid outlet pipe are respectively located on the two sides opposite in the horizontal direction of the electrode wire, the axis directions of the first liquid outlet pipe and the second liquid outlet pipe being perpendicular to the axis direction of the electrode wire.

5. The liquid supply nozzle mechanism according to claim 1, characterized by: There is a gap between the first liquid outlet pipe, the second liquid outlet pipe and the electrode wire, the output ends of the first liquid outlet pipe and the second liquid outlet pipe being respectively provided with arc-shaped portions adapted to the curvature of the electrode wire.

6. The liquid supply nozzle mechanism according to claim 1, characterized by: The electrode wire is provided with a plurality of protruding portions along the length direction thereof, the sizes of the protruding portions gradually decreasing from the electrode wire to the direction away from the electrode wire, the protruding portions having pointed ends.

7. The liquid supply nozzle mechanism according to claim 1, characterized by: The bottom portions of the outer shell and the metal block are respectively provided with an outer backflow hole and an inner backflow hole communicating with each other, the containing cavity being communicated with the outside through the outer backflow hole and the inner backflow hole.

8. The liquid supply nozzle mechanism according to claim 1, characterized by: The first cover is provided with a clamping groove adapted to the liquid inlet pipe.

9. The liquid supply nozzle mechanism of claim 1, wherein: The metal block and the outer shell are respectively provided with an inner electrode hole and an outer electrode hole, the containing cavity being communicated with the outside through the inner electrode hole and the outer electrode hole, the heights of the inner electrode hole and the outer electrode hole being greater than those of the outer backflow hole and the inner backflow hole, the electrode wire passing through the outer shell and the metal block through the inner electrode hole and the outer electrode hole.

10. An electrospinning machine characterized by, The utility model provides a liquid supply nozzle mechanism comprising any one of claims 1-9.

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