Electrostatic spinning nozzle

Abstract

The electrostatic spinning nozzle comprises a spinning assembly and a cleaning assembly, the spinning assembly comprises a shell, a positive electrode and a negative electrode, a material storage cavity is formed in the shell, the shell is further provided with a spraying hole communicated with the material storage cavity, the positive electrode and the negative electrode are arranged in the shell, and the cleaning assembly is arranged on the shell. And an electrostatic field for leading the spun yarns out along the jet holes is formed in the material storage cavity. The cleaning assembly comprises an air supply part, and the air supply part communicates with the material storage cavity and has a first state for conveying airflow to the material storage cavity to dredge the spraying holes and a second state for stopping conveying airflow into the material storage cavity. Firstly, molten materials are guided into the material storage cavity, an electrostatic field is formed by the positive electrode and the negative electrode, the molten materials in the containing cavity are stretched into spun yarns through the electrostatic field, and the spun yarns are guided out through the spraying holes. When the solidified material blocks the spraying hole, the air supply piece can be switched to the first state, the air supply piece is used for conveying air flow to the material storage cavity to dredge the spraying hole, and the electrostatic spinning nozzle does not need to be disassembled for cleaning.

Description

Technical Field

[0001] The utility model relates to the field of electrostatic spinning, in particular to an electrostatic spinning nozzle. Background Art

[0002] Electrospinning is a special form of electrostatic atomization of polymer fluids. The substances split by the atomization are not tiny droplets, but tiny polymer jets that can run for a considerable distance and eventually solidify into fibers.

[0003] The existing electrospinning nozzle can refer to the patent with application number CN202010709643.9. Under the action of the electric field, the droplet will change from a spherical shape to a conical shape (i.e., a "Taylor cone"), and extend from the tip of the cone to obtain fiber filaments, and then lead the fiber filaments out of the injection hole of the electrospinning nozzle. However, the aperture of the injection hole is extremely small, and during the working process, it is inevitable that some materials will adhere to the inner wall of the injection hole until the injection hole is blocked. At this time, the electrospinning nozzle needs to be disassembled to clean the injection hole. This method of cleaning the injection hole is complicated and cumbersome, which seriously interferes with the working efficiency of the electrospinning device.

[0004] Therefore, how to conveniently clean the injection hole of the electrospinning nozzle is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies, to provide an electrostatic spinning nozzle, and to solve the technical problem of how to conveniently clean the injection holes of the electrostatic spinning nozzle in the prior art.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses an electrostatic spinning nozzle, which comprises:

[0008] A spinning assembly, comprising a shell, a positive electrode and a negative electrode, wherein the shell has a material storage cavity, and the shell is also provided with a spray hole connected to the material storage cavity, the positive electrode and the negative electrode are installed in the shell, and form an electrostatic field in the material storage cavity to guide the spinning along the spray hole; and

[0009] The cleaning component includes an air supply member connected to the material storage chamber, and has a first state of supplying air to the material storage chamber to clear the injection hole, and a second state of stopping supplying air to the material storage chamber.

[0010] In some embodiments, the air supply member includes an air supply pipe and an air pump, one end of the air supply pipe is connected to the material storage chamber, and the other end thereof is connected to the air pump, and the air pump transports airflow into the material storage chamber through the air supply pipe.

[0011] In some embodiments, the air supply component further includes an air supply valve, and the air supply valve is installed on the air supply pipe to control the opening and closing of the air supply pipe.

[0012] In some embodiments, the air supply valve is installed at one end of the air supply pipe close to the shell.

[0013] In some embodiments, the cleaning component further includes a first heating element, which is installed around the injection hole and is used to heat and melt the material in the injection hole.

[0014] In some embodiments, the shell is provided with a heating groove surrounding the injection hole, and the first heating element includes a heating wire, and the heating wire is embedded in the heating groove.

[0015] In some embodiments, a first electrode slot and a second electrode slot are provided in the shell, and the positive electrode and the negative electrode are respectively embedded in the first electrode slot and the second electrode slot.

[0016] In some embodiments, the spinneret assembly further comprises a second heating element, which heats the material in the material storage chamber.

[0017] In some embodiments, an anti-corrosion lining is attached to the inner wall of the storage cavity.

[0018] In some embodiments, the inner wall of the material storage chamber has a guiding cone surface inclined toward the injection hole.

[0019] When using the electrospinning nozzle provided by the utility model, the molten material is first introduced into the material storage chamber, and the electrostatic field formed by the positive electrode and the negative electrode stretches the molten material in the storage chamber into spinning through the electrostatic field, and the spinning is led out through the injection hole. When the solidified material blocks the injection hole, the air supply member can be switched to the first state, so that the air supply member is used to transport air to the material storage chamber to clear the injection hole, and there is no need to disassemble the electrospinning nozzle for cleaning, thereby improving the working efficiency of electrospinning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an electrospinning nozzle provided in an embodiment of the utility model;

[0021] Explanation of the accompanying drawings: spinneret assembly 100, shell 110, material storage chamber 111, injection hole 112, heating tank 113, first electrode tank 114, second electrode tank 115, positive electrode 120, negative electrode 130, second heating element 140, cleaning assembly 200, air supply element 210, air supply pipe 211, air pump 212, air supply valve 213, first heating element 220. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] In order to solve the technical problem of how to conveniently clean the injection hole 112 of the electrospinning nozzle, the utility model provides an electrospinning nozzle, which clears the injection hole 112 through airflow, thereby improving the cleaning efficiency of the injection hole 112.

[0024] It should be noted that the electrospinning nozzle of the present invention is used for but not limited to electrospinning equipment, etc. For the convenience of explanation, in the present invention, only the electrospinning nozzle applied to electrospinning equipment is used as an example for explanation, and the principle of applying the electrospinning nozzle to other types of equipment is essentially the same as the principle applied to electrospinning equipment, which will not be repeated here.

[0025] See also Figure 1 The electrospinning nozzle comprises a spinning assembly 100 and a cleaning assembly 200. The spinning assembly 100 comprises a housing 110, a positive electrode 120 and a negative electrode 130. The housing 110 has a material storage chamber 111, and the housing 110 is also provided with an injection hole 112 connected to the material storage chamber 111. The positive electrode 120 and the negative electrode 130 are installed in the housing 110, and form an electrostatic field in the material storage chamber 111 to guide the spinning along the injection hole 112. The cleaning assembly 200 comprises an air supply member 210, which is connected to the material storage chamber 111, and has a first state of supplying air to the material storage chamber 111 to clear the injection hole 112, and a second state of stopping supplying air to the material storage chamber 111.

[0026] In this embodiment, the molten material is first introduced into the storage chamber 111, and the electrostatic field formed by the positive electrode 120 and the negative electrode 130 stretches the molten material in the storage chamber into filaments through the electrostatic field, and the filaments are led out through the injection hole 112. When the solidified material blocks the injection hole 112, the air supply member 210 can be switched to the first state, so that the air supply member 210 is used to deliver airflow to the storage chamber 111 to clear the injection hole 112, without disassembling the electrospinning nozzle for cleaning, thereby improving the working efficiency of electrospinning.

[0027] In some embodiments, the air supply member 210 includes an air supply pipe 211 and an air pump 212. One end of the air supply pipe 211 is connected to the material storage chamber 111, and the other end thereof is connected to the air pump 212. The air pump 212 delivers air flow into the material storage chamber 111 through the air supply pipe 211.

[0028] In this embodiment, the air pump 212 delivers air flow to the air supply pipe 211, and the air supply pipe 211 can guide the air flow into the material storage chamber 111, so that the air flow passes through the injection hole 112, and the injection hole 112 is flushed by the air flow to achieve the effect of cleaning the injection hole 112.

[0029] In some embodiments, the air supply member 210 further includes an air supply valve 213 , which is installed on the air supply pipe 211 to control the on / off of the air supply pipe 211 .

[0030] In this embodiment, during the electrospinning process, the air supply valve 213 needs to be closed, thereby closing the air supply pipe 211 to prevent the airflow of the air supply pipe 211 from affecting the electrospinning process. When the injection hole 112 needs to be cleaned, the air supply valve 213 can be opened so that the airflow can enter the material storage chamber 111 and the injection hole 112 through the air supply pipe 211.

[0031] In some embodiments, the air supply valve 213 is installed at one end of the air supply pipe 211 close to the housing 110 .

[0032] In this embodiment, the air supply valve 213 is arranged at one end close to the shell 110. When the air supply valve 213 is in a closed state, it can prevent the existence of a cavity in the air supply pipe 211 that is directly connected to the material storage chamber 111, thereby preventing the material in the material storage chamber 111 from entering the air supply pipe 211.

[0033] In some embodiments, the cleaning assembly 200 further includes a first heating element 220 , which is installed around the injection hole 112 and is used to heat and melt the material in the injection hole 112 .

[0034] In this embodiment, the material retained in the injection hole 112 is heated by the first heating element 220 to melt the material into a liquid state, so that the subsequent air supply element 210 can flush the material out of the injection hole 112 by airflow.

[0035] Based on the above embodiments, in some embodiments, the housing 110 is provided with a heating groove 113 surrounding the injection hole 112, and the first heating element 220 includes a heating wire embedded in the heating groove 113. The heating wire surrounds the injection hole 112 so as to evenly heat the material retained in the injection hole 112.

[0036] In some embodiments, a first electrode slot 114 and a second electrode slot 115 are defined in the housing 110 , and the positive electrode 120 and the negative electrode 130 are embedded in the first electrode slot 114 and the second electrode slot 115 , respectively.

[0037] In this embodiment, the first electrode groove 114 and the second electrode groove 115 are used to fix the positive electrode 120 and the negative electrode 130 respectively, so that the positive electrode 120 and the negative electrode 130 are installed more stably.

[0038] In some embodiments, the spinneret assembly 100 further includes a second heating element 140 , which heats the material in the material storage chamber 111 .

[0039] In this embodiment, the second heating element 140 can increase the temperature in the material storage chamber 111 so that the material in the material storage chamber 111 remains in a molten state, which is convenient for subsequent electrospinning operations.

[0040] In some embodiments, an anti-corrosion lining is attached to the inner wall of the storage chamber 111, thereby preventing the shell 110 from being corroded by the material.

[0041] In some embodiments, the inner wall of the material storage chamber 111 has a guiding cone surface inclined toward the injection hole 112 .

[0042] In this embodiment, the produced spun yarn can enter the injection hole 112 more easily under the guidance of the guide cone surface.

[0043] When using the electrospinning nozzle provided by the utility model, the molten material is first introduced into the storage chamber 111, and the electrostatic field formed by the positive electrode 120 and the negative electrode 130 stretches the molten material in the storage chamber into spinning through the electrostatic field, and enters the injection hole 112 under the guidance of the spinning guide cone surface, and finally is guided out through the injection hole 112. When the solidified material blocks the injection hole 112, the material retained in the injection hole 112 is heated by the first heating element 220 to melt the material into a liquid state, and the air supply element 210 can be switched to the first state, so that the air supply element 210 is used to transport airflow to the storage chamber 111 to clear the injection hole 112, and there is no need to disassemble the electrospinning nozzle for cleaning, thereby improving the working efficiency of electrospinning.

[0044] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An electrospinning nozzle, characterized in that: include: A spinning assembly, comprising a shell, a positive electrode and a negative electrode, wherein the shell has a material storage cavity, and the shell is also provided with a spray hole connected to the material storage cavity, the positive electrode and the negative electrode are installed in the shell, and an electrostatic field is formed in the material storage cavity to guide the spinning along the spray hole; as well as The cleaning component includes an air supply member connected to the material storage chamber, and has a first state of supplying air to the material storage chamber to clear the injection hole, and a second state of stopping supplying air to the material storage chamber.

2. The electrospinning nozzle according to claim 1, characterized in that: The air supply member includes an air supply pipe and an air pump. One end of the air supply pipe is connected to the material storage cavity, and the other end thereof is connected to the air pump. The air pump transports airflow into the material storage cavity through the air supply pipe.

3. The electrospinning nozzle according to claim 2, characterized in that: The air supply member also includes an air supply valve, which is installed on the air supply pipe to control the opening and closing of the air supply pipe.

4. The electrospinning nozzle according to claim 3, characterized in that: The air supply valve is installed at one end of the air supply pipe close to the shell.

5. The electrospinning nozzle according to claim 1, characterized in that: The cleaning component also includes a first heating element, which is installed around the injection hole and is used for heating and melting the material in the injection hole.

6. The electrospinning nozzle according to claim 5, characterized in that: The shell is provided with a heating groove surrounding the injection hole, and the first heating element comprises a heating wire, which is embedded in the heating groove.

7. The electrospinning nozzle according to claim 1, characterized in that: A first electrode slot and a second electrode slot are provided in the shell, and the positive electrode and the negative electrode are respectively embedded in the first electrode slot and the second electrode slot.

8. The electrospinning nozzle according to claim 1, characterized in that: The spinneret assembly further comprises a second heating element, which heats the material in the material storage chamber.

9. The electrospinning nozzle according to claim 1, characterized in that: The inner wall of the material storage cavity is attached with an anti-corrosion lining.

10. The electrospinning nozzle according to claim 1, characterized in that: The inner wall of the material storage chamber has a guiding cone surface inclined toward the injection hole.

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