Preparation equipment for crosslinking liquid of lyocell crosslinking fiber

Abstract

The utility model provides lyocell cross-linked fiber cross-linking liquid preparation equipment which comprises a preparation mechanism, a conveying mechanism and a padding mechanism, the preparation mechanism comprises a cross-linking agent tank and a catalyst tank, the cross-linking agent tank is used for containing a cross-linking agent, and the catalyst tank is used for containing a catalyst; the conveying mechanism comprises a cross-linking agent conveying pipe, a catalyst conveying pipe and a mixed solution conveying pipe, the cross-linking agent conveying pipe is used for conveying a preset dosage of cross-linking agent, the catalyst conveying pipe is used for conveying a preset dosage of catalyst, one end of the cross-linking agent conveying pipe is communicated with the cross-linking agent tank, one end of the catalyst conveying pipe is communicated with the catalyst tank, and the other end of the catalyst conveying pipe is communicated with the mixed solution conveying pipe; the other ends of the cross-linking agent conveying pipe and the catalyst conveying pipe are communicated with one end of a mixed solution conveying pipe; the padding mechanism is communicated with the other end of the mixed solution conveying pipe and used for receiving cross-linking liquid generated by the mixed reaction of the cross-linking agent and the catalyst and conducting padding on the fiber bundles through the cross-linking liquid. The equipment can effectively improve the stability of cross-linking liquid.

Description

Technical Field

[0001] This utility model belongs to the field of polymer material processing technology, and specifically relates to a crosslinking liquid preparation device for lyocell crosslinked fibers. Background Technology

[0002] Currently, when preparing crosslinking solutions for Lyocell crosslinked fibers, a relatively large amount of crosslinking agent and catalyst are usually placed in the same container and stirred before being poured into the impregnation mechanism to impregnate the fiber bundles. However, this preparation method not only requires a long time for the crosslinking agent and catalyst to mix evenly, but also requires a long waiting period after mixing. Therefore, the above preparation method makes the crosslinking agent and catalyst prone to side reactions such as hydrolysis, reducing the stability of the crosslinking solution.

[0003] Therefore, how to overcome the above-mentioned technical defects is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a crosslinking liquid preparation device for lyocell crosslinked fibers, which can effectively improve the stability of the crosslinking liquid.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A lyocell crosslinking fiber crosslinking solution preparation device, comprising:

[0007] The preparation apparatus includes a crosslinking agent tank and a catalyst tank, wherein the crosslinking agent tank is used to hold the crosslinking agent and the catalyst tank is used to hold the catalyst;

[0008] The conveying mechanism includes a crosslinking agent conveying pipe, a catalyst conveying pipe, and a mixed solution conveying pipe. One end of the crosslinking agent conveying pipe is connected to the crosslinking agent tank, one end of the catalyst conveying pipe is connected to the catalyst tank, and the other ends of both the crosslinking agent conveying pipe and the catalyst conveying pipe are connected to one end of the mixed solution conveying pipe.

[0009] The impregnation mechanism is connected to the other end of the mixed solution delivery pipe, and is used to receive the crosslinking liquid generated by the reaction of the crosslinking agent and the catalyst, and to impregnate the fiber bundle with the crosslinking liquid.

[0010] Optionally, the crosslinking agent tank is further equipped with a first stirring pump, and the catalyst tank is further equipped with a second stirring pump.

[0011] Optionally, the crosslinking agent tank is further provided with a first steam heat exchanger to keep the temperature of the crosslinking agent between 40°C and 80°C.

[0012] The catalyst tank is also equipped with a second steam heat exchanger to maintain the temperature of the catalyst between 40°C and 80°C.

[0013] Optionally, a first temperature sensor is also provided in the crosslinking agent tank, and a second temperature sensor is also provided in the catalyst tank.

[0014] Optionally, a first metering pump is also provided on the crosslinking agent delivery pipe, and a second metering pump is also provided on the catalyst delivery pipe.

[0015] Optionally, the outer walls of the crosslinking agent delivery pipe, the catalyst delivery pipe, and the mixed solution delivery pipe are all wrapped with a heat insulation layer.

[0016] Optionally, the impregnation mechanism includes at least a first roll and a second roll, the first roll and the second roll being arranged in parallel, and a gap between the first roll and the second roll for the fiber bundle to pass through;

[0017] The first roll and the second roll are each provided with a first baffle at one end and a second baffle at the other end. The first roll, the second roll, the first baffle and the second baffle form an impregnation tank for holding the crosslinking liquid.

[0018] Optionally, both the first baffle and the second baffle are trapezoidal structures, and both the first baffle and the second baffle are installed at the central axis of the first roll and the second roll.

[0019] Optionally, the impregnation mechanism further includes a heating element capable of heating the crosslinking liquid to maintain the crosslinking liquid at 40°C-80°C.

[0020] Optionally, the sizing mechanism further includes a leakage receiving groove, which is disposed below the first roll and the second roll to receive the crosslinking liquid flowing out from the sizing groove.

[0021] As can be seen from the above technical solution, when the Lyocell crosslinking fiber crosslinking liquid preparation equipment is working, the crosslinking agent flows out from the crosslinking agent tank and enters the mixed solution delivery pipe through the crosslinking agent delivery pipe. The catalyst flows out from the catalyst tank and enters the mixed solution delivery pipe through the catalyst delivery pipe. The two react and mix in the mixed solution delivery pipe to generate a crosslinking liquid, which then enters the impregnation mechanism. The fiber bundle is placed in the impregnation mechanism, and the impregnation of the fiber bundle is achieved through the impregnation mechanism.

[0022] The lyocell crosslinking fiber crosslinking solution preparation equipment disclosed in this utility model separates the crosslinking agent and catalyst into different tanks, and delivers them through a crosslinking agent delivery pipe, a catalyst delivery pipe, and a mixed solution delivery pipe. Compared with the prior art, this preparation equipment allows the crosslinking agent and catalyst to be slowly mixed through the mixed solution delivery pipe before entering the impregnation mechanism. This not only effectively reduces the time required for uniform mixing of the crosslinking agent and catalyst, but also reduces the long waiting time before use. Therefore, this preparation equipment can reduce the risk of hydrolysis of the lyocell crosslinking fiber crosslinking solution during the crosslinking process and improve the stability of the crosslinking solution. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the lyocell crosslinking fiber crosslinking solution preparation equipment disclosed in the embodiments of this utility model;

[0025] Figure 2 This is a schematic diagram of the crosslinking agent tank disclosed in the embodiments of this utility model;

[0026] Figure 3 This is a schematic diagram of the catalyst tank disclosed in the embodiments of this utility model;

[0027] Figure 4 This is a schematic diagram of the fiber bundle in the sizing mechanism as disclosed in the embodiments of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Preparation mechanism; 101. Crosslinking agent tank; 1011. First stirring pump; 1012. First steam heat exchanger; 1013. First temperature sensor; 102. Catalyst tank; 1021. Second stirring pump; 1022. Second steam heat exchanger; 1023. Second temperature sensor; 200. Conveying mechanism; 201. Crosslinking agent conveying pipe; 2011. First metering pump; 202. Catalyst conveying pipe; 2021. Second metering pump; 203. Mixed solution conveying pipe; 300. Impregnation mechanism; 301. First roller; 302. Second roller; 303. First baffle; 304. Rotating shaft; 305. Leakage receiving trough; 400. Fiber bundle. Detailed Implementation

[0030] In view of this, the purpose of this utility model is to provide a crosslinking liquid preparation device for lyocell crosslinked fibers, which can effectively improve the stability of the crosslinking liquid.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Please refer to... Figures 1 to 4 .

[0032] Please refer to Figure 1 The lyocell crosslinking fiber crosslinking solution preparation equipment disclosed in this embodiment of the invention includes a preparation mechanism 100, a conveying mechanism 200, and a tying mechanism 300. The preparation mechanism 100 includes a crosslinking agent tank 101 and a catalyst tank 102. The crosslinking agent tank 101 is used to hold the crosslinking agent, and the catalyst tank 102 is used to hold the catalyst. The conveying mechanism 200 includes a crosslinking agent conveying pipe 201, a catalyst conveying pipe 202, and a mixed solution conveying pipe 203. The crosslinking agent conveying pipe 201 is used to convey a preset dosage of crosslinking agent. The catalyst delivery pipe 202 is used to deliver a preset dose of catalyst. One end of the crosslinking agent delivery pipe 201 is connected to the crosslinking agent tank 101, and one end of the catalyst delivery pipe 202 is connected to the catalyst tank 102. The other ends of both the crosslinking agent delivery pipe 201 and the catalyst delivery pipe 202 are connected to one end of the mixed solution delivery pipe 203. The impregnation mechanism 300 is connected to the other end of the mixed solution delivery pipe 203 and is used to receive the crosslinking liquid generated by the crosslinking agent and the catalyst reaction, and impregnate the fiber bundle with the crosslinking liquid.

[0033] When the Lyocell crosslinking fiber crosslinking solution preparation equipment is working, the crosslinking agent flows out from the crosslinking agent tank 101 and enters the mixed solution delivery pipe 203 through the crosslinking agent delivery pipe 201. The catalyst flows out from the catalyst tank 102 and enters the mixed solution delivery pipe 203 through the catalyst delivery pipe 202. The two react and mix in the mixed solution delivery pipe 203 to generate a crosslinking solution, which then enters the impregnation mechanism 300. The fiber bundle 400 is placed into the impregnation mechanism 300, and the impregnation of the fiber bundle 400 is achieved through the impregnation mechanism 300.

[0034] The lyocell crosslinking fiber crosslinking solution preparation equipment disclosed in this embodiment of the invention separates the crosslinking agent and catalyst into different tanks, and transports them through a crosslinking agent delivery pipe 201, a catalyst delivery pipe 202, and a mixed solution delivery pipe 203. Compared with the prior art, this preparation equipment allows the crosslinking agent and catalyst to be slowly mixed through the mixed solution delivery pipe 203 before entering the impregnation mechanism 300. This not only effectively reduces the time required for uniform mixing of the crosslinking agent and catalyst, but also reduces the long waiting time before use. Therefore, this preparation equipment can reduce the risk of hydrolysis of the lyocell crosslinking fiber crosslinking solution during the crosslinking process and improve the stability of the crosslinking solution.

[0035] As a further embodiment, please refer to Figure 2 and Figure 3 The crosslinking agent tank 101 disclosed in this embodiment of the present invention is further provided with a first stirring pump 1011 to stir the crosslinking agent; correspondingly, the catalyst tank 102 is further provided with a second stirring pump 1021 to stir the catalyst.

[0036] As a further example, please continue to consider... Figure 2 and Figure 3 The crosslinking agent tank 101 disclosed in this embodiment of the invention is further provided with a first steam heat exchanger 1012 to maintain the temperature of the crosslinking agent at 40℃-80℃; the catalyst tank 102 is further provided with a second steam heat exchanger 1022 to maintain the temperature of the catalyst at 40℃-80℃. With this arrangement, the crosslinking agent and catalyst can maintain stable temperatures in their respective tanks, thereby making their properties more stable before mixing and further reducing the risk of hydrolysis after mixing.

[0037] In order to keep the temperature of both the crosslinking agent and the catalyst stable at 40℃-80℃, the crosslinking agent tank 101 disclosed in this embodiment of the present invention is further provided with a first temperature sensor 1013, and the catalyst tank 102 is further provided with a second temperature sensor 1023.

[0038] It should be noted that the Lyocell crosslinking fiber crosslinking liquid preparation equipment also includes a controller. The first steam heat exchanger 1012, the second steam heat exchanger 1022, the first temperature sensor 1013, and the second temperature sensor 1023 are all electrically connected to the controller. When the first temperature sensor 1013 detects the actual temperature value of the crosslinking agent, it transmits the signal to the controller. The controller adjusts the temperature of the first steam heat exchanger 1012 according to the actual temperature value to achieve temperature regulation of the crosslinking agent.

[0039] Correspondingly, when the second temperature sensor 1023 detects the actual temperature value of the catalyst, it transmits the signal to the controller. The controller adjusts the temperature of the second steam heat exchanger 1022 according to the actual temperature value to achieve temperature regulation of the catalyst.

[0040] As a further embodiment, please refer to... Figure 1 In this embodiment of the invention, the crosslinking agent delivery pipe 201 is further equipped with a first metering pump 2011, and the catalyst delivery pipe 202 is further equipped with a second metering pump 2021. The first metering pump 2011 enables precise control of the crosslinking agent delivery ratio, and the second metering pump 2021 enables precise control of the catalyst delivery ratio. This configuration allows for a more precise and efficient mixing process between the crosslinking agent and the catalyst, further reducing the mixing time, decreasing the degree of crosslinking agent hydrolysis, and improving the stability of the crosslinking liquid.

[0041] By reducing the hydrolysis of crosslinking agents, more crosslinking agents can participate fully in the crosslinking reaction, thereby significantly improving the crosslinking effect of Lyocell crosslinked fibers. The antigen fibrillation ability of fiber bundle 400 is further enhanced, and the overall quality and performance of the product are also correspondingly improved.

[0042] As a further embodiment, the outer walls of the crosslinking agent delivery pipe 201, catalyst delivery pipe 202, and mixed solution delivery pipe 203 disclosed in this embodiment are all wrapped with a heat insulation layer. This arrangement prevents temperature changes in the crosslinking agent and catalyst during delivery, ensuring that the crosslinking agent and catalyst remain within the preset temperature reaction range throughout the entire production process. Therefore, this preparation equipment can further effectively reduce the hydrolysis of the crosslinking agent in the non-reaction stage and improve the stability of the crosslinking solution through precise temperature control.

[0043] This utility model embodiment does not limit the specific structure of the immersion mechanism 300. Any structure that meets the usage requirements of this utility model is within the protection scope of this utility model.

[0044] As one embodiment, please refer to Figure 4 The impregnation mechanism 300 disclosed in this embodiment of the present invention includes at least a first roller 301 and a second roller 302, wherein the first roller 301 and the second roller 302 are arranged in parallel, and there is a gap between the first roller 301 and the second roller 302 through which the fiber bundle 400 passes.

[0045] In this design, a first baffle 303 is provided at one end of both the first roller 301 and the second roller 302, and a second baffle is provided at the other end. The first roller 301, the second roller 302, the first baffle 303, and the second baffle form an impregnation tank for holding the crosslinking solution. The crosslinking solution flowing from the mixed solution delivery pipe 203 enters the impregnation tank and impregnates the fiber bundle 400. The impregnated fiber bundle 400 is then compressed through the gap between the first roller 301 and the second roller 302. This structure integrates the first roller 301, the second roller 302, and the impregnation tank into a single unit, reducing the overall volume of the impregnation mechanism.

[0046] It should be noted that the tying mechanism also includes a rotating shaft 304, which allows the fiber bundle 400 to move, thereby enabling it to enter and exit the tying mechanism 300.

[0047] As a further embodiment, the impregnation mechanism 300 disclosed in this utility model embodiment may also include a third roller, wherein the third roller may be arranged in parallel with the first roller 301 and the second roller 302, and a fiber bundle 400 may pass between each two rollers, so that multiple fiber bundles 400 can be impregnated at the same time.

[0048] The specific structure of the first baffle 303 and the second baffle in this embodiment of the utility model is not limited. The first baffle 303 and the second baffle can be rectangular, trapezoidal, or other structures. As long as the structure meets the requirements of this utility model, it is within the protection scope of this utility model.

[0049] In a preferred embodiment, the first baffle 303 and the second baffle disclosed in this utility model embodiment are both trapezoidal structures, wherein the first baffle 303 and the second baffle are installed at the central axis of the first roll 301 and the second roll 302.

[0050] As a further embodiment, the impregnation mechanism 300 disclosed in this utility model embodiment also includes a heating element capable of heating the crosslinking liquid to maintain the crosslinking liquid at 40°C-80°C. The precise temperature control design in this device ensures that the crosslinking liquid remains within a suitable reaction temperature range throughout the entire production process.

[0051] As a further embodiment, the impregnation mechanism 300 disclosed in this utility model embodiment also includes a leakage receiving groove 305, which is disposed below the first roller 301 and the second roller 302 to receive the crosslinking liquid flowing out from the impregnation tank. During the impregnation process of the fiber bundle 400, the crosslinking liquid flows out from the gap between the first roller 301 and the second roller 302 and flows into the leakage receiving groove 305, which can receive the leakage liquid.

[0052] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lyocell crosslinked fiber crosslinking liquid preparation apparatus characterized by, The application relates to a cross-linking agent and catalyst mixing and impregnating device for fiber bundles. The device comprises a preparation mechanism, a conveying mechanism and an impregnating mechanism. The preparation mechanism comprises a cross-linking agent tank and a catalyst tank, the cross-linking agent tank is used for containing a cross-linking agent, and the catalyst tank is used for containing a catalyst. The conveying mechanism comprises a cross-linking agent conveying pipe, a catalyst conveying pipe and a mixed solution conveying pipe, one end of the cross-linking agent conveying pipe is connected with the cross-linking agent tank, one end of the catalyst conveying pipe is connected with the catalyst tank, and the other end of the cross-linking agent conveying pipe and the catalyst conveying pipe is connected with one end of the mixed solution conveying pipe.

2. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The impregnating mechanism is connected with the other end of the mixed solution conveying pipe and is used for receiving cross-linking liquid generated by mixing reaction of the cross-linking agent and the catalyst and impregnating the fiber bundle with the cross-linking liquid.

3. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The cross-linking agent tank is further provided with a first stirring pump, and the catalyst tank is further provided with a second stirring pump. The cross-linking agent tank is further provided with a first steam heat exchanger, so that the temperature of the cross-linking agent is kept at 40-80 DEG C.

4. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The catalyst tank is further provided with a second steam heat exchanger, so that the temperature of the catalyst is kept at 40-80 DEG C.

5. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The cross-linking agent tank is further provided with a first temperature sensor, and the catalyst tank is further provided with a second temperature sensor.

6. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The cross-linking agent conveying pipe is further provided with a first metering pump, and the catalyst conveying pipe is further provided with a second metering pump.

7. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The outer walls of the cross-linking agent conveying pipe, the catalyst conveying pipe and the mixed solution conveying pipe are wrapped with a heat preservation layer. The impregnating mechanism comprises at least a first roller and a second roller, the first roller and the second roller are arranged in parallel, and the first roller and the second roller have a gap through which the fiber bundle passes.

8. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 7, characterized by, One end of the first roller and the second roller is provided with a first baffle, and the other end is provided with a second baffle, the first roller, the second roller, the first baffle and the second baffle form an impregnating groove for containing the cross-linking liquid.

9. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 1, characterized by, The first baffle and the second baffle are trapezoidal structures, and the first baffle and the second baffle are installed at the central shafts of the first roller and the second roller.

10. The lyocell crosslinked fiber crosslinking liquid preparation apparatus according to claim 7, characterized by, The impregnating mechanism further comprises a heating element, the heating element can heat the cross-linking liquid, so that the cross-linking liquid is kept at 40-80 DEG C. The impregnating mechanism further comprises a liquid leakage receiving groove, the liquid leakage receiving groove is arranged at the lower part of the first roller and the second roller to receive the cross-linking liquid flowing out of the impregnating groove.

Images