A spinneret for preparing nanofibers

Abstract

The utility model discloses a nanofiber preparation spinneret, including a spinneret body, an annular groove is provided on the upper end surface of the spinneret body, a spinneret hole penetrating the spinneret body is provided in the annular groove, the spinneret hole is in a conical hole structure, a pressure hole connected to the spinneret hole is provided on the periphery of the spinneret body, and a detachable sealing plate for closing the pressure hole is installed on the periphery of the spinneret body. In the utility model, the spinneret hole located in the spinneret hole installed in the annular groove structure adopts a conical hole structure, which can gradually increase the spinneret pressure during use, and the fiber material sprayed through the spinneret hole has a higher quality, and also makes the fiber material easier to shape; when the spinneret hole is blocked, the sealing plate can be removed, and the pressure hole is used to release the pressure to spray out the blockage in the spinneret hole, so as to avoid damage to the spinneret hole, and the sealing plate is installed in a detachable manner for inspection and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber manufacturing, in particular to a spinneret for preparing nanofibers. Background Art

[0002] Spinnerets are commonly used products in the textile and chemical fiber industry. In the production process of synthetic fibers, the melt is ejected from the spinneret holes to form primary fibers, which are then processed into finished synthetic fibers through subsequent processes. The structure of the spinneret commonly used at this stage includes a spinneret body. The high-temperature melt of the material is extruded from the spinneret body under a certain pressure, and passes through the spinneret holes to form dense high-temperature melt streams. These melt streams have a very high temperature. Under the action of the side wind, they need to be uniformly cooled and form stable pre-drawn fibers with a certain degree of crystallinity and pre-orientation within a certain spinning process and a very short time. The existing spinnerets cause the spinneret holes to be blocked during the production process, affecting production efficiency. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a spinneret for preparing nanofibers, which has high spinning stability and is not easy to be blocked.

[0004] The technical solution adopted by the utility model is: a nanofiber preparation spinneret, including a spinneret body, the upper end surface of the spinneret body is provided with an annular groove, the annular groove is provided with a spinneret hole penetrating the spinneret body, the spinneret hole is a conical hole structure, the outer periphery of the spinneret body is provided with a pressure hole connected to the spinneret hole, and the outer periphery of the spinneret body is installed with a detachable sealing plate for closing the pressure hole.

[0005] In the present technical solution, a ring groove structure is provided on the spinneret body to install the spinneret hole. The spinneret hole adopts a conical hole structure, and the pressure gradually increases. The fiber material sprayed out through the spinneret hole has a higher quality, and also makes the fiber material easier to shape. When the spinneret hole is blocked, the sealing plate can be removed, and the pressure hole is used to release the pressure to spray out the blockage in the spinneret hole to avoid damage to the spinneret hole. The sealing plate is installed in a detachable manner for easy inspection and maintenance.

[0006] Preferably, a nozzle is provided on the lower end surface of the spinneret body corresponding to each spinneret hole.

[0007] Preferably, a nozzle rack is fixed to the lower end surface of the spinneret body, and each nozzle is fixed on the nozzle rack.

[0008] Preferably, a magnetic ring for adsorbing the nozzle holder is provided on the lower end surface of the spinneret body.

[0009] Preferably, a buffer ring arranged around the outer side of the annular groove is embedded in the upper end surface of the spinneret body.

[0010] Preferably, the annular groove opening on the upper end surface of the spinneret body is provided with a stepped opening arranged around the annular groove.

[0011] Preferably, a sealing column embedded in each pressure hole is provided on the inner side of the sealing plate, and a fixing screw hole is also provided at the end of the sealing plate.

[0012] The beneficial effects of the utility model are as follows: the spinneret hole located in the spinneret hole installed in the annular groove structure adopts a tapered hole structure, which can gradually increase the spinneret pressure during use, and the fiber material sprayed out through the spinneret hole has higher quality, and also makes the fiber material easier to shape; when the spinneret hole is blocked, the sealing plate can be removed, and the pressure hole can be used to release the pressure to spray out the blockage in the spinneret hole, thereby avoiding damage to the spinneret hole; the sealing plate is installed in a detachable manner, which is convenient for inspection and maintenance, and has higher practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0014] Figure 1 It is a cross-sectional view of a spinneret for preparing nanofibers provided in an embodiment of the present utility model.

[0015] Figure 2 A three-dimensional diagram of a spinneret for preparing nanofibers provided in an embodiment of the present invention.

[0016] Reference numerals: spinneret body 100 , annular groove 110 , stepped opening 111 , spinneret hole 120 , pressure hole 130 , sealing plate 200 , sealing column 210 , nozzle 300 , nozzle holder 400 , magnetic induction ring 500 , buffer ring 600 . DETAILED DESCRIPTION

[0017] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0018] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0019] like Figure 1 and Figure 2As shown, a specific embodiment of the utility model provides a nanofiber preparation spinneret, which can avoid blockage during installation and use, and specifically includes a spinneret body 100, wherein the upper end surface of the spinneret body 100 is provided with an annular groove 110, and the annular groove 110 is provided with a spinneret hole 120 penetrating the spinneret body 100, and the spinneret hole 120 is in a conical hole structure, and the outer periphery of the spinneret body 100 is provided with a pressure hole 130 connected to the spinneret hole 120, and the outer periphery of the spinneret body 100 is installed with a detachable sealing plate 200 for closing the pressure hole 130. An annular groove 110 structure is arranged on the spinneret body 100, and a spinneret hole 120 is arranged on the bottom wall of the annular groove 110. The spinneret hole 120 adopts a conical hole structure, and the pressure gradually increases. The fiber material sprayed out through the spinneret hole 120 has a higher quality, and also makes the fiber material easier to shape; when the spinneret hole 120 is blocked, the sealing plate 200 can be removed, and the pressure hole 130 is used to release the pressure to spray out the blockage in the spinneret hole 120, so as to avoid damage to the spinneret hole 120. The sealing plate 200 is installed in a detachable manner for easy use; in order to improve the sealing effect, in this embodiment, a sealing column 210 embedded in each pressure hole 130 is provided on the inner side of the sealing plate 200, and a fixing screw hole is also provided at the end of the sealing plate 200. The sealing plate 200 is fixed by fixing screws, which is convenient for disassembly. Each sealing column 210 can be inserted into the pressure hole 130, which is conducive to closing the pressure hole 130.

[0020] like Figure 1 and Figure 2 As shown, in this embodiment, nozzles 300 are provided on the lower end surface of the spinneret body 100 corresponding to each spinneret hole 120. Spraying the fiber through each nozzle 300 is beneficial to molding. In order to install the nozzle 300 on the lower end of the spinneret body 100, in this embodiment, a nozzle holder 400 is fixed on the lower end surface of the spinneret body 100, and each nozzle 300 is fixed on the nozzle holder 400. Each nozzle 300 is fixed by the nozzle holder 400; in addition, in this embodiment, a magnetic ring 500 for adsorbing the nozzle holder is provided on the lower end surface of the spinneret body 100. In this way, the nozzle holder 400 can be installed by magnetic adsorption through the magnetic ring 500, and the installation stability is high and it is easy to remove for cleaning and replacement.

[0021] like Figure 1 and Figure 2 As shown, in order to improve the stability of the spinneret in use, a buffer ring 600 arranged around the outer side of the annular groove 110 is embedded in the upper end surface of the spinneret body 100 in this embodiment. The buffer ring 600 can effectively reduce the stress generated by the plate body and improve the service life of the spinneret. Since the spinneret body 100 needs to be installed at the spinning end of the equipment, the opening of the annular groove 110 on the upper end surface of the spinneret body 100 in this embodiment is provided with a stepped opening 111 arranged around the annular groove 110. The stepped opening 111 can be connected to the installation position to improve the stability of the installation docking.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A spinneret for preparing nanofibers, characterized in that; The invention comprises a spinneret body (100), wherein an annular groove (110) is provided on the upper end surface of the spinneret body (100), a spinneret hole (120) penetrating the spinneret body (100) is provided in the annular groove (110), and the spinneret hole (120) is in a conical hole structure; a pressure hole (130) connected to the spinneret hole (120) is provided on the outer periphery of the spinneret body (100); and a detachable sealing plate (200) for closing the pressure hole (130) is installed on the outer periphery of the spinneret body (100).

2. The spinneret for preparing nanofibers according to claim 1, characterized in that: The lower end surface of the spinneret body (100) is provided with a nozzle (300) corresponding to each spinneret hole (120).

3. The spinneret for preparing nanofibers according to claim 2, characterized in that: A nozzle rack (400) is fixed on the lower end surface of the spinneret body (100), and each nozzle (300) is fixed on the nozzle rack (400).

4. The spinneret for preparing nanofibers according to claim 3, characterized in that: The lower end surface of the spinneret body (100) is provided with a magnetic attracting ring (500) for adsorbing the nozzle frame.

5. The spinneret for preparing nanofibers according to claim 1, characterized in that: A buffer ring (600) arranged around the outer side of the annular groove (110) is embedded in the upper end surface of the spinneret body (100).

6. The spinneret for preparing nanofibers according to claim 1, characterized in that: The opening of the annular groove (110) on the upper end surface of the spinneret body (100) is provided with a stepped opening (111) arranged around the annular groove (110).

7. The spinneret for preparing nanofibers according to claim 1, characterized in that: The inner side of the sealing plate (200) is provided with a sealing column (210) embedded in each pressure hole (130), and the end of the sealing plate (200) is also provided with a fixing screw hole.

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