Flame-retardant fiber prepared from modified inorganic nano material and production device of flame-retardant fiber

Abstract

The invention discloses a flame-retardant fiber prepared from a modified inorganic nano material and a production device of the flame-retardant fiber, belongs to the technical field of flame-retardant fiber production, and solves the problems that a filter element is difficult to disassemble and assemble, the filter element is inconvenient to clean and the melt filtering stability is poor in the prior art. A filter assembly is arranged in each of the two filter cavities, a switching valve is arranged on the outer wall of the melt filter, the filter states of the two filter assemblies are switched through the switching valve, each filter assembly comprises a base, and a plurality of mounting holes are formed in each base. The filter element can be mounted and dismounted by directly inserting and pulling out the inserting rod after the connecting rope is opened, so that the dismounting difficulty of the filter element is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of flame-retardant fiber production technology, specifically to a modified inorganic nanomaterial for preparing flame-retardant fibers and its production apparatus. Background Technology

[0002] Polyester fiber (PET) has a wide range of applications in home textiles and other fields. In addition to pure polyester products, there are many functional fibers that are blended or interwoven with other textile fibers, such as conductive fibers, heat-insulating fibers and flame-retardant fibers, which make up for the shortcomings of pure polyester fabrics.

[0003] Currently, there are two main types of production technologies for flame-retardant fibers: copolymerization modification and finishing. Copolymerization modification involves using chemical flame retardants to participate in the polymerization reaction of PET to form intramolecular flame-retardant copolymers, which are then melt-spun to obtain flame-retardant polyester fibers. Finishing involves immersing polyester fibers in a finishing solution containing flame retardants, allowing the flame retardants to adhere to their surface.

[0004] When using the copolymerization modification method for production, the addition of a large amount of chemical flame retardants and the presence of a significant amount of recycled materials in the basic raw materials result in a high level of impurities after the raw materials are melted. This places high demands on the filtration performance of the melt filter. Existing melt filter cartridges are all connected to the base plate by threads, making disassembly and assembly difficult and increasing operational complexity. This also hinders the rapid cleaning of the filter cartridges, thereby affecting the continuity and stability of the melt filter's filtration operation. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a modified inorganic nanomaterial for preparing flame-retardant fibers and its production apparatus.

[0006] This invention is achieved using the following technical solution: a production device for preparing flame-retardant fibers from modified inorganic nanomaterials, comprising a melt filter, wherein the melt filter has two filter chambers, each of the two filter chambers is provided with a filter assembly, and a switching valve is provided on the outer wall of the melt filter, wherein the two filter assemblies switch the filtering state through the switching valve, characterized in that the filter assembly includes a base, and the base is provided with a plurality of mounting holes; A filter element, wherein the end of the filter element is provided with an insertion rod, the insertion rod is inserted into the mounting hole, and the insertion rod is provided with a through hole; A connecting cable, which passes through several holes in sequence and is connected end to end.

[0007] Optionally, the mounting hole extends through the base along the thickness direction of the base, and the base is provided with a plurality of mounting hole groups, which are arranged in a circular pattern at intervals, and a connecting cable passes through each mounting hole group.

[0008] Optionally, the outer diameter of the filter element is larger than the inner diameter of the mounting hole, the outer wall of the insertion rod fits against the inner wall of the mounting hole, the filter element is located on one side of the base, and the through hole is located on the other side of the base.

[0009] Optionally, one end of the connecting cable is provided with a first connecting piece, and the other end of the connecting cable is provided with a second connecting piece, the first connecting piece and the second connecting piece being attached to each other and locked together by bolts.

[0010] Optionally, the base has at least two grooves on the side facing the perforation. The grooves extend radially along the base. A support strip is provided in the groove. The lower part of the support strip is adapted to the groove, and the upper part of the support strip is an upwardly convex arc shape. The support strip is used to support the connecting cable in a taut state.

[0011] Optionally, the groove passes through two adjacent mounting holes in the same mounting hole group.

[0012] Optionally, the top of the support bar is provided with a socket, the socket is close to the outer edge of the base, and the socket is offset from the bolt; The base has a threaded hole in the center of the side facing the perforation, which is used to connect the boom of the gantry crane.

[0013] Optionally, the outer wall of the base is fitted to the inner wall of the filter chamber, the base is located at the upper part of the filter chamber, and a cap is provided on the top of the filter chamber.

[0014] A modified inorganic nanomaterial is used to prepare flame-retardant fibers, which are produced by a production device for preparing flame-retardant fibers from modified inorganic nanomaterials.

[0015] In summary, the present invention has the following beneficial technical effects: In this invention, the insert rod at the end of the filter element is inserted into the mounting hole of the base, and the connecting cable passes through the through hole on the insert rod in sequence and is connected end to end. Compared with the traditional threaded connection method, there is no need to rotate to tighten or loosen. The filter element can be installed and removed by simply inserting and pulling the insert rod, which greatly reduces the difficulty of installing and removing the filter element, reduces the operation time and complexity for operators, and allows for quick cleaning of the filter element. This avoids the problem of untimely cleaning caused by difficulty in installation and removal, thereby improving the continuity and stability of the filtration action of the melt filter. Attached Figure Description

[0016] Figure 1 This is a reference diagram of the explosion state of the present invention; Figure 2 This is a schematic diagram of the structure of the filter component in this invention. Figure 1 ; Figure 3This is a schematic diagram of the structure of the filter component in this invention. Figure 2 ; Figure 4 This is a reference diagram showing the connection state between the insertion rod and the connecting cable in this invention; Figure 5 This is a schematic perspective view of the support strip in this invention.

[0017] In the diagram: 1. Melt filter; 11. Filter chamber; 12. Switching valve; 13. Cap; 2. Filter assembly; 21. Base; 211. Mounting hole; 212. Groove; 213. Threaded hole; 22. Filter element; 23. Insert rod; 230. Perforation; 24. Connecting cable; 241. First connecting piece; 242. Second connecting piece; 243. Bolt; 25. Support bar; 250. Insertion hole. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] like Figure 1-5 As shown in the figure, this embodiment discloses a production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials, including a melt filter 1. The melt filter 1 has two filter chambers 11, and each of the two filter chambers 11 is equipped with a filter component 2. A switching valve 12 is provided on the outer wall of the melt filter 1. The two filter components 2 switch the filtration state through the switching valve 12. In this way, when one filter component 2 needs cleaning and maintenance, the filtration work can be switched to the other filter component 2 through the switching valve 12, thus ensuring the continuity and stability of the filtration action.

[0020] The filter assembly 2 includes a base 21, a filter element 22, and a connecting cable 24. The base 21 has several mounting holes 211 that penetrate the base 21 along its thickness, forming multiple mounting hole groups arranged in a circular pattern. The filter element 22 has an insertion rod 23 at its end, which is inserted into the mounting hole 211. The insertion rod 23 has a through hole 230, allowing it to be integrally formed with the filter element 22 to ensure structural stability. The insertion rod 23 secures the filter element 22 to the base 21, while the through hole 230 allows the connecting cable 24 to pass through.

[0021] Connecting cables 24 pass sequentially through several holes 230 and are connected end to end. Each mounting hole group contains one connecting cable 24. One end of the connecting cable 24 has a first connecting piece 241, and the other end has a second connecting piece 242. The first connecting piece 241 and the second connecting piece 242 are attached to each other and locked together by bolts 243. The connecting cables 24 can be made of high-strength steel wire rope, connecting multiple filter elements 22 in the same mounting hole group in series, facilitating overall installation and disassembly. The connection method using the first connecting piece 241, the second connecting piece 242, and the bolts 243 makes the connection and disassembly of the connecting cables 24 more convenient and faster. That is, when it is necessary to disassemble the filter element 22, first unscrew the bolts 243, then pull the connecting cable 24 out of the mounting holes 211. At this time, the base 21 and the filter element 22 can be quickly separated, greatly improving the disassembly efficiency of the filter element 22.

[0022] The base 21 has at least two grooves 212 on the side facing the through hole 230. The grooves 212 extend radially along the base 21, and a support strip 25 is provided within each groove 212. The lower part of the support strip 25 is adapted to the groove 212, and the upper part of the support strip 25 is an upwardly convex arc shape. The support strip 25 is used to support the connecting cable 24 in a taut state. The grooves 212 pass through two adjacent mounting holes 211 in the same mounting hole group. This arrangement can better support the connecting cable 24 and ensure its stability. The support strip 25 can be made of wear-resistant plastic material, and its arc shape design can reduce wear on the connecting cable 24.

[0023] The support bar 25 has a socket 250 at its top, located near the outer edge of the base 21, and is offset from the bolt 243. The base 21 has a threaded hole 213 in the center of the side facing the through hole 230, used to connect the lifting rod of a gantry crane. The socket 250 can be used to insert auxiliary tools, facilitating the pushing of the support bar 25 into the groove 212 and pushing the connecting cable 24 upwards, thus tautning the connecting cable 24 and ensuring the filter element 22 is reliably installed on the base 21. The threaded hole 213 facilitates the use of a gantry crane to lift the entire filter assembly 2 for installation and disassembly.

[0024] The outer wall of the base 21 fits against the inner wall of the filter chamber 11. The base 21 is located at the top of the filter chamber 11, and a cap 13 is provided on the top of the filter chamber 11. The base 21 can also cooperate with the aluminum sealing ring to form a barrier. The filtration operation of the melt is carried out below the base 21, and the connecting cable 24 is located above the base 21, ensuring that the highly viscous melt will not penetrate between the insertion rod 23 and the connecting cable 24. This facilitates the operator to quickly clean or replace the filter assembly 2 after the crane lifts it out of the filter chamber 11.

[0025] The implementation principle of this embodiment is as follows: A production device for preparing flame-retardant fibers from modified inorganic nanomaterials includes two filter components 2 installed within a melt filter 1. A switching valve 12 is used to switch the filtration state, ensuring continuous and stable filtration. The filter components 2 are connected in series via insertion rods 23 into mounting holes 211 and connecting cables 24, making the installation and removal of the filter elements 22 more convenient and quick, and facilitating rapid cleaning of the filter elements 22. Simultaneously, the cooperation of the support bar 25, insertion holes 250, and threaded holes 213 further improves the convenience of installation, disassembly, and maintenance of the filter components 2, greatly enhancing the continuity and stability of the filtration operation and reducing operational difficulty.

[0026] This embodiment also discloses a method for preparing flame-retardant fibers using modified inorganic nanomaterials, obtained by the production apparatus described in the above embodiment. The flame-retardant fibers produced by this apparatus exhibit more reliable quality and more uniform flame-retardant properties due to more stable and efficient melt filtration during the production process. This production apparatus effectively removes impurities from the melt, ensuring the purity and performance of the fibers. The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application fall within the scope of protection claimed by this application.

Claims

1. A production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials, comprising a melt filter (1), wherein the melt filter (1) is provided with two filter chambers (11), each of the two filter chambers (11) is provided with a filter assembly (2), and a switching valve (12) is provided on the outer wall of the melt filter (1), wherein the two filter assemblies (2) switch the filtration state through the switching valve (12), characterized in that, The filter assembly (2) includes a base (21) and the base (21) is provided with a plurality of mounting holes (211); The filter element (22) has a plug (23) at its end, the plug (23) is inserted into the mounting hole (211), and the plug (23) has a through hole (230); Connecting cable (24), which passes through several holes (230) in sequence and is connected end to end.

2. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 1, characterized in that, The mounting hole (211) penetrates the base (21) along the thickness direction of the base (21). The base (21) is provided with a plurality of mounting hole groups, which are arranged in a circular pattern at intervals. Each mounting hole group contains a connecting cable (24).

3. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 2, characterized in that, The outer diameter of the filter element (22) is larger than the inner diameter of the mounting hole (211), the outer wall of the insertion rod (23) is in contact with the inner wall of the mounting hole (211), the filter element (22) is located on one side of the base (21), and the perforation (230) is located on the other side of the base (21).

4. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 2, characterized in that, One end of the connecting cable (24) is provided with a first connecting piece (241), and the other end of the connecting cable (24) is provided with a second connecting piece (242). The first connecting piece (241) and the second connecting piece (242) are attached to each other and locked together by bolts (243).

5. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 4, characterized in that, The base (21) has at least two grooves (212) on the side facing the perforation (230). The grooves (212) extend radially along the base (21). A support strip (25) is provided in the groove (212). The lower part of the support strip (25) is adapted to the groove (212). The upper part of the support strip (25) is an upwardly convex arc surface. The support strip (25) is used to support the connecting cable (24) in a taut state.

6. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 5, characterized in that, The groove (212) passes through two adjacent mounting holes (211) in the same mounting hole group.

7. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 5, characterized in that, The top of the support bar (25) is provided with a socket (250), the socket (250) is close to the outer edge of the base (21), and the socket (250) is offset from the bolt (243); The base (21) has a threaded hole (213) in the center of the side facing the through hole (230), and the threaded hole (213) is used to connect the boom of the gantry crane.

8. The production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials according to claim 7, characterized in that, The outer wall of the base (21) is attached to the inner wall of the filter chamber (11), the base (21) is located on the upper part of the filter chamber (11), and the top of the filter chamber (11) is provided with a cap (13).

9. A method for preparing flame-retardant fibers using modified inorganic nanomaterials, characterized in that, It is prepared by the production apparatus for preparing flame-retardant fibers from modified inorganic nanomaterials as described in claim 8.

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