CN214992336U - Preparation facilities of lyocell crosslinked fiber - Google Patents
Preparation facilities of lyocell crosslinked fiber Download PDFInfo
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- CN214992336U CN214992336U CN202121410214.8U CN202121410214U CN214992336U CN 214992336 U CN214992336 U CN 214992336U CN 202121410214 U CN202121410214 U CN 202121410214U CN 214992336 U CN214992336 U CN 214992336U
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Abstract
The utility model provides a preparation facilities of lyocell crosslinked fibre, a serial communication port, include: the spray chamber is used for spraying the crosslinking liquid on the fiber ribbons; the inlet of the curing equipment is connected with the outlet of the spray chamber, and the fiber ribbon enters the curing equipment from the spray chamber; and the inlet of the water washing tank is connected with the outlet of the curing equipment, and the fiber ribbons enter the water washing tank from the curing equipment. The utility model provides a crosslinked fiber's preparation facilities has the spray chamber for spray the crosslinked liquid to the fibre silk ribbon, can avoid mixing in advance of cross-linking agent and catalyst and the hydrolysis that causes, the auto-agglutination leads to the problem of crosslinked liquid a large amount of wastes, require low, easy operation to equipment, the effectual crosslinked effect that has improved, reduced manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of crosslinked fibers, and particularly relates to a preparation device of lyocell crosslinked fibers.
Background
The traditional fiber crosslinking is that a crosslinking agent reacts with fibers under the activation of a catalyst, and in the process, part of the crosslinking agent is easily hydrolyzed or self-polymerized after being activated, so that the crosslinking effect is reduced, the crosslinking agent is wasted, and the production cost is increased. Taking the existing crosslinking equipment as an example, when the crosslinking temperature is 80 ℃, the concentration of TAHT (1,3, 5-triacryloylhexahydro-1, 3, 5-triazine) solution is 0.92 wt%, and the concentration of NaOH is 0.2 wt%, the hydrolysis rate of the crosslinking agent reaches 11.04g/(L × h). The continuous addition of the crosslinking agent and catalyst to the crosslinking bath is required for the stabilization of the crosslinking effect in production, with a TAHT of about 11 ten thousand/t and a crosslinking agent storage tank of 3m3It is calculated that about 3191.4 ten thousand yuan is consumed annually due to the hydrolysis of the crosslinking agent. This greatly increases the production cost. And in the process of HMMM (methylated hexamethylol melamine resin) crosslinking fibers, under the influence of a sulfonic acid catalyst, HMMM is easy to self-polymerize to form a hard solid precipitate, so that the production cost is increased, and the precipitate is easy to block a pipeline to influence the normal production.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a preparation facilities of lyocell crosslinked fibre, the utility model provides a crosslinked fibre's preparation facilities has the spray room for spray the crosslinked liquid to the fibre silk ribbon, can avoid the cross-linking agent and catalyst mix in advance and hydrolysis, the auto-agglutination that causes lead to the extravagant problem in a large number of crosslinked liquid.
The utility model provides a preparation facilities of lyocell crosslinked fibre, a serial communication port, include:
the spray chamber is used for spraying the crosslinking liquid on the fiber ribbons;
the inlet of the curing equipment is connected with the outlet of the spray chamber, and the fiber ribbon enters the curing equipment from the spray chamber;
and the inlet of the water washing tank is connected with the outlet of the curing equipment, and the fiber ribbons enter the water washing tank from the curing equipment.
Preferably, the spraying chambers are vertically arranged, so that the fiber ribbons between the bottom end and the tail end of the spraying chambers are conveyed from bottom to top in the vertical direction in the spraying process.
Preferably, the bottom end of the spray chamber is provided with a distribution assembly, so that the fiber ribbon is distributed into at least two fiber sub-ribbons before spraying.
Preferably, the dispensing assembly is a set of rollers.
Preferably, rollers are arranged from the bottom end to the top end of the spray chamber and used for conveying the fiber band from bottom to top and converging and squeezing the fiber band through the rollers at the top end.
Preferably, a temperature control system is further arranged in the spraying chamber and used for adjusting the temperature in the spraying chamber.
Preferably, the temperature control system is a heating wire or a jacket.
Preferably, a mixing cavity, a high-pressure pipeline and a nozzle are arranged in the spray chamber;
the mixing cavity is used for mixing the cross-linking agent solution and the catalyst solution to form cross-linking liquid,
the outlet of the mixing cavity is communicated with the inlet of the high-pressure pipeline,
the outlet of the high-pressure pipeline is communicated with the inlet of the nozzle;
the spray nozzle is arranged below the roller at the top end of the spray chamber.
Preferably, a plurality of nozzles are arranged in the spray chamber;
the nozzles are arranged on both sides of the fiber band.
Preferably, the nozzle orifice of the nozzle is flat, and the length of the nozzle orifice is consistent with the width of the spraying silk ribbon.
The utility model provides a preparation facilities of lyocell crosslinked fibre has the spray chamber for spray the crosslinked liquid to the fibre silk ribbon, can avoid mixing in advance of cross-linking agent and catalyst and the hydrolysis that causes, the auto-agglutination leads to the extravagant problem in a large number of crosslinked liquids, low, the easy operation of equipment requirement, the effectual crosslinked effect that has improved has reduced manufacturing cost. Furthermore, a mixing cavity, a high-pressure pipeline and a nozzle are arranged in the spray chamber, a roller is arranged from the bottom end to the top end of the spray chamber, the nozzle is arranged below the roller at the top end of the spray chamber, the fiber ribbons sprayed at the nozzle can be conveyed from the nozzle to the roller at the top end in the spray chamber from bottom to top along the direction parallel to the fiber ribbons for extruding and rolling, and the extruded cross-linking liquid can naturally flow downwards along the fiber ribbons during extruding and rolling; furthermore, a distribution component is arranged at the bottom end of the spray chamber, so that the fiber ribbons are distributed into at least two fiber sub-ribbons before being sprayed, a roller is arranged from the bottom end to the top end of the spray chamber, the fiber ribbons can be distributed into a plurality of fiber sub-ribbons by the distribution component at the bottom end before being sprayed when entering the spray chamber, the plurality of fiber sub-ribbons are converged into one fiber ribbon for squeezing and binding by the roller at the top end after being sprayed, the impregnation effect of the crosslinking liquid and the fiber ribbons can be further improved by the structural design, the fiber ribbons are firstly divided into more than two sub-ribbons, and each sub-ribbon is sprayed with the crosslinking liquid, so that the fiber ribbons are more fully contacted with the crosslinking liquid; secondly, the sub-bands are gathered and poured into a set of rollers to be squeezed into a fiber band, so that the cross-linking liquid can permeate from the inside and the outside of the fiber band at the moment of squeezing, and the fiber dipping effect is improved; and thirdly, the spraying amount of the cross-linking liquid on the surface of each fiber sub-band can be reduced, so that the sub-bands are shown to form a thinner cross-linking liquid layer, and the adverse effect of the catalyst on the cross-linking agent is also unexpectedly reduced.
Drawings
FIG. 1 is a schematic structural view of a prior art apparatus for producing crosslinked fibers;
FIG. 2 is a schematic structural diagram of an apparatus for preparing crosslinked fibers according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a shower chamber according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other examples, which may be modified or embellished by one of ordinary skill in the art based on the embodiments of the present invention, are within the scope of the present invention. It should be understood that the embodiments of the present invention are only used for illustrating the technical effects of the present invention, and are not used for limiting the protection scope of the present invention. In the examples, the methods used were all conventional methods unless otherwise specified.
The utility model provides a preparation facilities of lyocell crosslinked fibre, the schematic structure is shown as figure 2, include:
the spray chamber 4 is used for spraying the crosslinking liquid on the fiber ribbons;
the inlet of the curing equipment 5 is connected with the outlet of the spray chamber, and the fiber ribbons enter the curing equipment from the spray chamber;
and the inlet of the water washing pool 6 is connected with the outlet of the curing equipment, and the fiber ribbons enter the water washing pool from the curing equipment.
The utility model discloses in, the preferred vertical arrangement of spray room makes the fibrous silk ribbon between spray room bottom and the end top spray the in-process and carry from bottom to top in vertical direction.
In the present invention, the bottom end of the spray chamber is preferably provided with a distribution assembly, so that the fiber ribbon is distributed into at least two fiber sub-ribbons before spraying; the dispensing assembly is preferably a set of rollers, which may be formed from pairs of rollers.
In the utility model, rollers are preferably arranged from the bottom end to the top end of the spray chamber and used for transporting the fiber ribbons from bottom to top and gathering and squeezing the fiber ribbons by the rollers at the top end; the roll is preferably plural.
The utility model discloses in, the preferred temperature control system that still is provided with in the spray chamber for adjust the temperature in the spray chamber. The utility model discloses it is right temperature control system does not have special restriction, adopt the temperature control equipment that technical personnel in this field are familiar can control the temperature in the spray chamber. In the utility model, the temperature control system is preferably a heating wire, for example, the heating wire can be wound inside the spray chamber; the temperature control system is preferably a jacket, such as may be provided for a spray chamber, which is controlled by introducing steam into the jacket.
The utility model discloses in, the spray chamber is indoor preferably to be provided with hybrid chamber, high-pressure pipeline and nozzle, the hybrid chamber is used for forming the cross-linking liquid with cross-linking agent solution and catalyst solution mixture, the export of hybrid chamber and high-pressure pipeline's import intercommunication, high-pressure pipeline's export and the import intercommunication of nozzle. In the utility model discloses in, the cross-linking liquid in the hybrid chamber is carried to the nozzle in and is sprayed the cellosilk area by the nozzle blowout through high-pressure pipeline. The utility model discloses in, the nozzle is preferred to be set up in the below of spray room top roll, preferably sets up in the middle part of spray room. In the utility model, a plurality of nozzles are preferably arranged in the spraying chamber; the nozzles are preferably arranged on both sides of the fiber bands or fiber sub-bands, each of which is provided with nozzles on both sides. The utility model discloses in, the spout of nozzle is preferred to be the platykurtic, the length of spout is preferred unanimous with the width of fibre silk ribbon or fibre sub-silk ribbon, is favorable to the even spraying of cross-linking liquid on the fibre silk ribbon.
The utility model discloses in, the schematic structure of spray room is shown in fig. 3, the vertical setting of spray room, include: the spraying chamber comprises a mixing chamber 7, a high-pressure pipeline 9 communicated with an outlet of the mixing chamber, a nozzle 10 communicated with the outlet of the high-pressure pipeline, and a plurality of rollers 11 arranged from the bottom to the top of a shell 8 of the spraying chamber, wherein the rollers are used for firstly distributing fiber ribbons in the spraying chamber into at least two fiber sub-ribbons, conveying the fiber ribbons from bottom to top to the top, and converging the sprayed fiber sub-ribbons into a fiber ribbon at the roller at the top and carrying out squeezing and rolling; the nozzles are arranged on two sides of the fiber sub-bands in the middle of the spraying chamber shell.
The utility model discloses it is right curing equipment does not have special restriction, adopt the curing equipment that technical personnel in the field are familiar can make the fibre silk ribbon after spraying solidify can.
The water washing pool of the utility model has no special limitation, and the fiber ribbon after solidification can be washed by adopting the water washing pool which is well known to the technical personnel in the field.
In the utility model, the fiber ribbons enter the vertically arranged spray chamber, a plurality of pairs of rollers arranged at the bottom in the spray chamber are distributed into at least two fiber sub-ribbons, the cross-linking agent solution and the catalyst solution are mixed in the mixing chamber to form cross-linking liquid, the cross-linking liquid is conveyed to the inlet nozzle through the high-pressure pipeline, the nozzle sprays two surfaces of the fiber sub-ribbons, and the fiber sub-ribbons move from bottom to top and reach the rollers arranged at the top end of the spray chamber to be gathered and then extruded; and (4) the squeezed fiber band enters a curing device for curing, and then enters a water washing pool for water washing.
The utility model provides a preparation facilities of lyocell crosslinked fibre has the spray chamber for spray the crosslinked liquid to the fibre silk ribbon, can avoid mixing in advance of cross-linking agent and catalyst and the hydrolysis that causes, the auto-agglutination leads to the extravagant problem in a large number of crosslinked liquids, low, the easy operation of equipment requirement, the effectual crosslinked effect that has improved has reduced manufacturing cost. Furthermore, a mixing cavity, a high-pressure pipeline and a nozzle are arranged in the spray chamber, a roller is arranged from the bottom end to the top end of the spray chamber, the nozzle is arranged below the roller at the top end of the spray chamber, the fiber ribbons sprayed at the nozzle can be conveyed from the nozzle to the roller at the top end in the spray chamber from bottom to top along the direction parallel to the fiber ribbons for extruding and rolling, and the extruded cross-linking liquid can naturally flow downwards along the fiber ribbons during extruding and rolling; furthermore, a distribution component is arranged at the bottom end of the spray chamber, so that the fiber ribbons are distributed into at least two fiber sub-ribbons before being sprayed, a roller is arranged from the bottom end to the top end of the spray chamber, the fiber ribbons can be distributed into a plurality of fiber sub-ribbons by the distribution component at the bottom end before being sprayed when entering the spray chamber, the plurality of fiber sub-ribbons are converged into one fiber ribbon for squeezing and binding by the roller at the top end after being sprayed, the impregnation effect of the crosslinking liquid and the fiber ribbons can be further improved by the structural design, the fiber ribbons are firstly divided into more than two sub-ribbons, and each sub-ribbon is sprayed with the crosslinking liquid, so that the fiber ribbons are more fully contacted with the crosslinking liquid; secondly, the sub-bands are gathered and poured into a set of rollers to be squeezed into a fiber band, so that the cross-linking liquid can permeate from the inside and the outside of the fiber band at the moment of squeezing, and the fiber dipping effect is improved; and thirdly, the spraying amount of the cross-linking liquid on the surface of each fiber sub-band can be reduced, so that the sub-bands are shown to form a thinner cross-linking liquid layer, and the adverse effect of the catalyst on the cross-linking agent is also unexpectedly reduced.
The utility model discloses the test method of Wet Abrasion Value (WAV) in the following embodiment does: the nominal linear density D and the number N of wet abrasion turns of 20 fibers to be tested were simultaneously measured using a VIBROSKOP 500 denier meter from Lenzing instruments and a DELTA 100 wet abrasion meter. The greater the value of wet abrasion, the greater the ability of the fiber to resist fibrillation. The wet abrasion value WAV (unit: r/dtex) is calculated by the following formula:
example 1
This example provides an apparatus for preparing crosslinked fibers, constructed as shown in fig. 2, comprising:
a spray chamber 4, a curing device 5 and a washing tank 6;
the outlet of the spray chamber is communicated with the inlet of the curing equipment; the outlet of the curing equipment is communicated with the inlet of the water washing pool; the fiber ribbon sequentially enters a spray chamber, a curing device and a water washing pool;
the vertical setting of shower, the schematic structure of shower is shown in fig. 3, includes: a mixing cavity 7, a spray chamber shell 8, a high-pressure pipeline 9, a nozzle 10 and a roller 11;
the mixing cavity is used for mixing the cross-linking agent solution and the catalyst solution to form cross-linking liquid, an outlet of the mixing cavity is communicated with an inlet of the high-pressure pipeline, and an outlet of the high-pressure pipeline is communicated with an inlet of the nozzle; the cross-linking liquid in the mixing cavity is conveyed to a nozzle through a high-pressure pipeline and sprayed out, and the fiber sub-bands are sprayed; the spray nozzles are arranged on two sides of the fiber sub-bands in the middle of the spray chamber shell, the nozzles of the spray nozzles are flat, and the length of each spray nozzle is the same as the width of each fiber sub-band;
the spraying chamber shell is provided with a plurality of rollers from the bottom to the top, and the rollers are used for distributing the fiber bands entering the spraying chamber into at least two fiber sub-bands, transporting the fiber bands from bottom to top, gathering the sprayed fiber sub-bands and then extruding and rolling the gathered fiber sub-bands; an electric heating wire is wound in the spraying chamber and used as a temperature control system to control the temperature of the spraying chamber;
and (4) after the squeezed fiber band enters curing equipment for curing, washing by a washing pool to obtain the crosslinked fiber.
Example 2
Cross-linked fibers were prepared using the apparatus provided in example 1:
preparing a mixed solution containing 1.84 wt% TAHT (1,3, 5-triacryloylhexahydro-1, 3, 5-triazine) and 2 wt% sodium sulfate (the solvent in the mixed solution is water) at 80 deg.C, standing for 0min, 15min and 60min, respectively, and preparing Na with concentration of 6 wt% at 80 deg.C3PO4A solution (water is used as a solvent in the solution), and the mixed solution is mixed with Na3PO4The solution was prepared as follows 1: 1, forming a cross-linking liquid after mixing in the mixing chamber, and entering a nozzle through a high-pressure pipeline to spray (the time from the beginning of mixing to the spraying to the fiber ribbon is not more than 10 seconds); the lyocell fiber ribbons enter a spray chamber, the bottom end of the spray chamber is distributed into three fiber sub-ribbons through a plurality of rollers, each fiber sub-ribbon has two sides, the fiber sub-ribbons are transported from bottom to top in the spray chamber, cross-linking liquid sprayed out of a nozzle transversely penetrates through the fiber sub-ribbons and naturally flows downwards along the fiber sub-ribbons, and the two sides of the fiber sub-ribbons are uniformly sprayed with the cross-linking liquid; conveying the fiber sub-bands from bottom to top to a roller at the top end of the spray chamber for converging and then extruding, wherein the extruded cross-linking liquid naturally flows downwards along the fiber bands (fiber sub-bands); spraying 0.653kg of cross-linking liquid per 1kg of net weight fiber band in the spraying process; the squeezed fiber band enters a curing device to be cured for 35min at 130 ℃, and the fiber band is sprayedThe temperature between the post-spraying and the curing treatment is 80 ℃, and then the fiber enters a washing tank for washing and drying to obtain the crosslinked fiber.
Comparative example 1
The crosslinked fiber was prepared using the apparatus for preparing crosslinked fiber having the structure shown in fig. 1, comprising:
a padding tank 1, a curing device 2 and a water washing tank 3.
Padding lyocell fiber ribbon at 80 deg.C in 0.92 wt% TAHT, 1 wt% Na mixed for 0min, 15min and 60min2SO4And 3% wt Na3PO4The crosslinking solution formed by the mixed solution is soaked and rolled for three times in a crosslinking solution (the solvent in the mixed solution is water), the rolling residual rate is controlled at 125 percent (carried out in a padding pool), the curing is carried out for 30min at 120 ℃ (carried out in curing equipment), and the crosslinking fiber is obtained after water washing (carried out in a water washing pool) and drying.
The crosslinked fibers prepared in example 2 and comparative example 1 were tested for wet abrasion value according to the method described above and the results were as follows:
| crosslinking process | 0min | 15min | 60min |
| Comparative example 1 | 620.19 | 302.57 | 44.55 |
| Example 2 | 445.39 | 440.21 | 439.87 |
From the above results, it can be seen that the crosslinking effect of TAHT as a crosslinking agent and a crosslinking agent solution when standing for 60min is reduced by only 1.24% compared with that of the spraying method (example 2) when standing for 0min, and the fibers prepared in example 2 all have higher wet abrasion value WAV; the one-bath process (comparative example 1) decreased 92.82%.
Comparative example 2
A mixed aqueous solution containing 3.6% by weight of TAHT (1,3, 5-triacryloylhexahydro-1, 3, 5-triazine) and 2% by weight of sodium sulfate was prepared at 80 ℃ and Na was prepared at a concentration of 3% by weight at 80 ℃3PO4An aqueous solution; mixing the above mixed solution with Na3PO4The solution was prepared as follows 1: 1, forming a cross-linking liquid after mixing in the mixing chamber, entering a nozzle through a high-pressure pipeline and spraying out (the time from the beginning of mixing to the spraying to the fiber ribbon is not more than 10 seconds); the lyocell fiber ribbons enter a spray chamber, the bottom end of the spray chamber is distributed into three fiber sub-ribbons through a plurality of rollers, each fiber sub-ribbon has two sides, the fiber sub-ribbons are transported from bottom to top in the spray chamber, cross-linking liquid sprayed out of a nozzle transversely penetrates through the fiber sub-ribbons and naturally flows downwards (vertical spraying) along the fiber sub-ribbons, and the two sides of the fiber sub-ribbons are uniformly sprayed with the cross-linking liquid; conveying the fiber sub-bands from bottom to top to a roller at the top end of the spray chamber for converging and extruding, wherein the extruded cross-linking liquid naturally flows downwards along the fiber bands (fiber sub-bands); or
The fiber sub-bands are conveyed from left to right in the spraying process (horizontal spraying, a spraying chamber is horizontally arranged), and the fiber sub-bands move to the right to a roller for squeezing;
spraying 1.03kg of cross-linking liquid per 1kg of net weight fiber ribbon in the spraying process; and then curing the fiber bands in curing equipment at 120 ℃ for 30min, wherein the temperature of the fiber bands is 80 ℃ in the process between the spraying and curing treatment, then washing the fiber bands in a water washing pool, and drying the fiber bands to obtain the crosslinked fiber.
The method according to the technical scheme detects the wet abrasion value of the crosslinked fiber prepared by vertical spraying and horizontal spraying, and the detection result is as follows:
| spraying mode | Wet abrasion value, r/dtex |
| Vertical shower | 414.86 |
| Horizontal spray | 357.57 |
According to the detection result, the utilization rate of the cross-linking agent mixed solution is effectively improved by vertical spraying, and a better cross-linking effect can be obtained under the same condition compared with horizontal spraying.
The utility model provides a preparation facilities of lyocell crosslinked fibre has the spray chamber for spray the crosslinked liquid to the fibre silk ribbon, can avoid mixing in advance of cross-linking agent and catalyst and the hydrolysis that causes, the auto-agglutination leads to the extravagant problem in a large number of crosslinked liquids, low, the easy operation of equipment requirement, the effectual crosslinked effect that has improved has reduced manufacturing cost. Furthermore, a mixing cavity, a high-pressure pipeline and a nozzle are arranged in the spray chamber, a roller is arranged from the bottom end to the top end of the spray chamber, the nozzle is arranged below the roller at the top end of the spray chamber, the fiber ribbons sprayed at the nozzle can be conveyed from the nozzle to the roller at the top end in the spray chamber from bottom to top along the direction parallel to the fiber ribbons for extruding and rolling, and the extruded cross-linking liquid can naturally flow downwards along the fiber ribbons during extruding and rolling; furthermore, a distribution component is arranged at the bottom end of the spray chamber, so that the fiber ribbons are distributed into at least two fiber sub-ribbons before being sprayed, a roller is arranged from the bottom end to the top end of the spray chamber, the fiber ribbons can be distributed into a plurality of fiber sub-ribbons by the distribution component at the bottom end before being sprayed when entering the spray chamber, the plurality of fiber sub-ribbons are converged into one fiber ribbon for squeezing and binding by the roller at the top end after being sprayed, the impregnation effect of the crosslinking liquid and the fiber ribbons can be further improved by the structural design, the fiber ribbons are firstly divided into more than two sub-ribbons, and each sub-ribbon is sprayed with the crosslinking liquid, so that the fiber ribbons are more fully contacted with the crosslinking liquid; secondly, the sub-bands are gathered and poured into a set of rollers to be squeezed into a fiber band, so that the cross-linking liquid can permeate from the inside and the outside of the fiber band at the moment of squeezing, and the fiber dipping effect is improved; and thirdly, the spraying amount of the cross-linking liquid on the surface of each fiber sub-band can be reduced, so that the sub-bands are shown to form a thinner cross-linking liquid layer, and the adverse effect of the catalyst on the cross-linking agent is also unexpectedly reduced.
While only the preferred embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A device for producing lyocell crosslinked fibers, comprising:
the spray chamber is used for spraying the crosslinking liquid on the fiber ribbons;
the inlet of the curing equipment is connected with the outlet of the spray chamber, and the fiber ribbon enters the curing equipment from the spray chamber;
and the inlet of the water washing tank is connected with the outlet of the curing equipment, and the fiber ribbons enter the water washing tank from the curing equipment.
2. The apparatus according to claim 1, wherein the shower chamber is vertically arranged so that the fiber ribbon is conveyed from bottom to top in a vertical direction during spraying between the bottom end and the distal end of the shower chamber.
3. The apparatus of claim 1, wherein the bottom end of the spray chamber is provided with a distribution assembly such that the ribbon of fibers is distributed into at least two sub-ribbons of fibers prior to spraying.
4. The apparatus of claim 3, wherein the distribution assembly is a set of nip rollers.
5. The apparatus for preparing lyocell crosslinked fibers according to claim 1, wherein the spray chamber is provided with rolls from a bottom end to a top end thereof for transporting the fiber ribbon from bottom to top and converging and squeezing the fiber ribbon through the rolls at the top end.
6. The apparatus according to claim 1, wherein a temperature control system is further provided in the spray chamber to adjust the temperature in the spray chamber.
7. The apparatus according to claim 6, wherein the temperature control system is a heating wire or a jacket.
8. The apparatus according to claim 5, wherein a mixing chamber, a high-pressure pipe and a nozzle are provided in the shower chamber;
the mixing cavity is used for mixing the cross-linking agent solution and the catalyst solution to form cross-linking liquid,
the outlet of the mixing cavity is communicated with the inlet of the high-pressure pipeline,
the outlet of the high-pressure pipeline is communicated with the inlet of the nozzle;
the spray nozzle is arranged below the roller at the top end of the spray chamber.
9. The apparatus according to claim 8, wherein a plurality of nozzles are provided in the shower chamber;
the nozzles are arranged on both sides of the fiber band.
10. The apparatus for preparing lyocell crosslinked fibers according to claim 9, wherein the nozzle has a flat nozzle opening, and the nozzle opening has a length corresponding to the width of the sprayed ribbon.
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| CN202121410214.8U CN214992336U (en) | 2021-06-23 | 2021-06-23 | Preparation facilities of lyocell crosslinked fiber |
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| CN202121410214.8U CN214992336U (en) | 2021-06-23 | 2021-06-23 | Preparation facilities of lyocell crosslinked fiber |
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