A tows washing machine system

Abstract

The application discloses a kind of tow washing machine systems, it is related to the field of fiber product production technology and fiber processing equipment in chemical fiber industry, including longitudinal washing zone and transverse washing zone, for cleaning processing to tow;The tow in the longitudinal washing zone is sent cleaning along longitudinal direction, the tow in the transverse washing zone is sent cleaning along transverse direction, the longitudinal washing zone and transverse washing zone can be used according to tow speed selection alone or in series combination;The longitudinal washing zone is composed of multiple single longitudinal washing zones in series, the transverse washing zone is composed of multiple single transverse washing zones in series, each single longitudinal washing zone or single transverse washing zone includes silk separator, godet, spraying system, liquid collecting tank and the like, can be suitable for multiple tow washing simultaneously, while the tow washing machine system of the application is also suitable for high-speed spinning tow washing, can effectively reduce tow abrasion, reduce the fibrillation degree of tow, the system has high cleaning water utilization rate, energy saving, flexible adjustment, high universality, easy to operate, conducive to industrialization use and the like characteristics.

Description

Technical Field

[0001] This invention relates to the field of fiber tow post-processing equipment, and more specifically, to a tow washing technology for high-speed spinning of cellulose fibers, which is a tow washing machine system. Background Technology

[0002] Cellulose fiber is a high-quality material in the textile industry, with superior moisture absorption and blending properties unmatched by other chemical fibers, especially the environmentally friendly new solvent-based cellulose fiber that has been widely developed in recent years. However, new solvent-based cellulose fibers exhibit plateau fiberization characteristics, particularly prone to mechanical abrasion in wet conditions, which is more pronounced during high-speed spinning. Therefore, plateau fiberization has become a major challenge limiting its high-speed production. Currently, there is no commercially available washing system suitable for cellulose fiber spinning speeds of 200m / min to 1000m / min. The high moisture absorption also makes it difficult to achieve longer washing lengths after high-speed tow washing. The plateau fiberization characteristics of new solvent-based cellulose fibers during high-speed spinning cause them to easily fuzz under conditions such as water immersion or spray water impact. In mechanical wet conditions, they are easily broken, stretched, or abraded by pressure rollers or tension rollers, thus affecting the stability of the production process and the final quality of the tow.

[0003] Chinese Patent Application No. 201420442904.5 discloses a tow washing machine, which includes two production lines sharing the same frame: each production line is divided into four zones; the lower end of each zone is a water receiving tank, the middle is a plurality of rotatable lower rollers mounted on the frame, and the upper end is a plurality of upper rollers of the same number for each zone, an upper roller transmission box, a rinsing tank, and a pressure roller; each upper roller is fixedly mounted on the output shaft of the upper roller transmission box, and the upper end of each upper roller in each zone is equipped with a rinsing tank, and the upper end of the last upper roller is equipped with a pressure roller driven by a cylinder; each zone's upper roller transmission box is equipped with a motor or two adjacent zones' upper roller transmission boxes are equipped with a motor, and the transmission shafts of each upper roller transmission box are connected by a coupling; each rinsing tank is connected by a water pipe to the outlet of the corresponding zone's water receiving tank. This tow washing machine is used for washing cellulose fibers produced by the new solvent method. The linear speed of the guide rollers cannot meet the tow speed requirements of 200m / min to 1000m / min for high-speed spinning of cellulose fibers produced by the new solvent method. Furthermore, due to the limited length of the equipment, it cannot completely remove the solvent from the tow. At the same time, due to the special requirements of cellulose fibers produced by the new solvent method, only individual tows can be washed separately. Therefore, this type of tow washing machine can only perform one-to-one washing, which seriously wastes floor space and increases energy consumption. In addition, because the cellulose fibers produced by the new solvent method are relatively thin, they often break under the action of the pressure rollers, which seriously affects the quality of the tow and production.

[0004] Therefore, the traditional industrial washing machines used in the chemical fiber industry generally face the following key problems when applied to new solvent-based cellulose fibers:

[0005] (1) The new solvent-based cellulose fiber has high-altitude fibrillation characteristics, especially under mechanical wet conditions, it is easily damaged, which in turn affects the stability of the process and the quality of the fiber; after the fiber bundle speed is increased, the friction between the guide roller and the fiber bundle increases, which not only aggravates the wear of the fiber bundle, but also causes serious fibrillation of the fiber bundle.

[0006] (2) Traditional industrial cellulose fiber washing machines do not separate the fiber bundles well and are only suitable for washing fiber bundles with low spinning speeds. When the fiber bundle speed is increased, the circulating water splashes everywhere, which seriously affects the production workshop environment and damages the stability of the fiber bundle post-processing process.

[0007] (3) Although existing washing machines for other types of fibers in the chemical fiber industry can also clean multiple bundles of high-speed spun fibers at the same time, they are not suitable for washing due to the excellent hygroscopic properties of new solvent-based cellulose fibers and their susceptibility to mechanical wear and fibrillation in wet conditions.

[0008] (4) Conventional immersion type, water washing plate type or overflow water type are mostly used for the post-washing treatment of high-strength filaments of anaerobic base. For high-speed spinning of multi-filaments of new solvent method cellulose fiber, the washing of filaments has the characteristics of severe fibrillation, easy breakage of filaments by pressure rollers, and easy fluctuation of filaments caused by water flow. Such chemical fiber washing machines of these types ultimately seriously affect the quality of new solvent method cellulose fiber filaments.

[0009] In view of this, the present invention is proposed. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a filament washing machine system. Through the combined use of longitudinal and transverse washing zones, multiple filament bundles can be washed simultaneously, as well as high-speed spun fiber bundles, effectively reducing filament bundle wear and reducing the fibrillation degree of the filament bundles.

[0011] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0012] A filament washing machine system includes a longitudinal washing zone and a transverse washing zone for cleaning filaments;

[0013] The filament bundles in the longitudinal washing zone are conveyed and cleaned in the longitudinal direction, and the filament bundles in the transverse washing zone are conveyed and cleaned in the transverse direction.

[0014] The longitudinal washing zone and the transverse washing zone can be used individually or in series depending on the speed of the filament bundle.

[0015] Furthermore, when the fiber speed is in the range of 20m / min to 200m / min, the transverse washing zone can be used alone;

[0016] When the fiber speed is in the range of 200m / min to 400m / min, the longitudinal washing zone and the transverse washing zone are used in series.

[0017] When the filament speed is in the range of 400m / min to 1000m / min, the longitudinal washing zone is used alone.

[0018] In the above scheme, the washing combination method can be selected according to the filament speed. By selecting the longitudinal washing zone and the transverse washing zone and their different combinations, the washing machine system can be applied to the simultaneous washing of multiple filament bundles of different species and spinning speeds.

[0019] Furthermore, the longitudinal washing zone includes at least one individual longitudinal washing zone, and the transverse washing zone includes at least one individual transverse washing zone.

[0020] The longitudinal washing zone of the monomer includes a first fiber splitter, and the transverse washing zone of the monomer includes a second fiber splitter.

[0021] The first and second fiber splitters are provided with multiple fiber splitting units, which are distributed along the extension length of the first and second fiber splitters to separate multiple fiber bundles.

[0022] Preferably, the number of longitudinal washing zones of the single unit is even;

[0023] Preferably, the number of the filament splitting units is 1 to 33.

[0024] In the above scheme, multiple longitudinal washing zones of individual units are connected in series, and multiple transverse washing zones of individual units are connected in series. The number of longitudinal and transverse washing zones of individual units can be adjusted according to the characteristics of the process filament bundle itself and the cleaning requirements. Theoretically, the number of longitudinal washing zones of individual units is NA≥0; the number of transverse washing zones of individual units is NB≥1.

[0025] The filament separator is designed to enable the filament washing machine system to operate with multiple filament bundles without causing filament interference.

[0026] The first fiber separator can be set on the fiber inlet side of the longitudinal washing zone of the single fiber, or it can be set on the fiber outlet side;

[0027] Preferably, a first filament splitter is set on the filament inlet side of the first single longitudinal washing zone and on the filament outlet side of the last single longitudinal washing zone. The position of the first filament splitter in the middle single longitudinal washing zone can be set according to actual needs to ensure that multiple filament bundles can run at high spinning speed in the entire longitudinal washing zone without tangling.

[0028] The second splitter is set up in the same way as above in the transverse washing zone.

[0029] Furthermore, the first and second wire splitters are made of wear-resistant materials;

[0030] Preferably, the wear-resistant material is selected from one or a combination of stainless steel, ceramics, and nylon;

[0031] More preferably, the wear-resistant material is ceramic.

[0032] In the above scheme, the filament separator is made of wear-resistant material to ensure that the filament separator will not cause wear to the running filaments during the long-term operation of the filament washing machine system. Ceramic material is preferred because it has good wear resistance, a smooth surface, and low friction.

[0033] Furthermore, the single-unit longitudinal washing zone includes a plurality of first guide rollers, which are arranged longitudinally;

[0034] The single transverse washing zone includes multiple second guide rollers, which are arranged transversely.

[0035] Preferably, the number of first guide rollers in the longitudinal washing zone of the single unit is 6 to 12;

[0036] Preferably, the diameter of the second guide roller is smaller than the diameter of the first guide roller.

[0037] In the above scheme, the first guide roller and the second guide roller are centrally controlled by a frequency converter, and can rotate independently or together, while also meeting the winding requirements of filament bundles with different spinning speeds.

[0038] The diameter of the guide roller can be selected according to the spinning speed of the filament bundle. The diameters of the first guide roller and the second guide roller can be the same or different, preferably different, and the diameter of the second guide roller is smaller than that of the first guide roller, so as to achieve high spinning speed operation of the filament bundle in the longitudinal washing zone.

[0039] Meanwhile, the number of guide rollers can be selected according to the required washing time.

[0040] Furthermore, at least a portion of the first guide roller and a portion of the second guide roller have grooves on their outer peripheral surfaces that cooperate with the filament bundle, and the grooves are recessed toward the center of the first guide roller or the second guide roller.

[0041] Preferably, the number of guide rollers with grooves is less than or equal to half the total number of the first guide roller and the second guide roller;

[0042] Preferably, the number of grooves on the guide roller with grooves is less than or equal to 32;

[0043] Preferably, the depth of the groove is 3mm to 20mm.

[0044] In the above scheme, by setting grooves on the guide roller, the grooves can separate, fix and limit the multiple bundles of wire, so that they can be effectively attached to the guide roller. During operation, the phenomenon of multiple bundles of wire entanglement is avoided. At the same time, separating the multiple bundles of wire is beneficial to improving the cleaning effect of the wire bundles.

[0045] The number of wire grooves corresponds to the number of wire splitting units.

[0046] The groove is preferably located in the middle section of the guide roller, which refers to the area 15mm to 20mm away from both ends of the guide roller along its length.

[0047] At the same time, the depth of the groove should not be too shallow, otherwise it will not be able to limit the wire bundle and it will be easy to break out of the groove; at the same time, it should not be too deep, otherwise it will increase the path of the wire bundle when entering and leaving the groove and increase the probability of wear on the wire bundle. Therefore, the depth of the groove is limited to 3mm to 20mm.

[0048] Not all guide rollers need to be equipped with grooves. It is sufficient to set them on some of the first guide rollers and some of the second guide rollers. This can meet the cleaning needs of multiple filament bundles in both the longitudinal and transverse washing zones, while also reducing the difficulty of equipment production and lowering costs.

[0049] Furthermore, the outer peripheral surfaces of the first and second guide rollers are coated with a material that can improve surface roughness.

[0050] Preferably, the material for improving surface roughness is selected from one or a combination of ceramics and chromium plating;

[0051] Preferably, the surface roughness is less than or equal to Ra0.8.

[0052] In the above scheme, the outer peripheral surfaces of the first guide roller and the second guide roller include the outer surface of the wire groove.

[0053] The material that can improve the surface roughness is sprayed on the outer peripheral surfaces of the first and second guide rollers to ensure the gripping force required for the filament to run in the wire groove during high-speed operation of the guide rollers, so that the filament is not easy to slip out of the wire groove. The surface roughness of the coating is required to be relatively high, but not too high, otherwise it will easily cause wear to the filament. Therefore, the surface roughness is limited to less than or equal to Ra0.8.

[0054] Furthermore, the longitudinal washing zone includes a first spray system, and the transverse washing zone includes a second spray system. The first and second spray systems each include multiple spray devices, which are positioned between adjacent guide rollers for spraying and cleaning the filament bundles between adjacent guide rollers.

[0055] Alternatively, the spraying device may be positioned to correspond to the position of the guide roller, and may be used to spray and clean the filaments wound on the guide roller.

[0056] In the above scheme, it is preferable that the filament bundle between every two guide rollers is covered with cleaning water, and each guide roller is covered by at least one spray device.

[0057] Preferably, the number of spray devices covering each guide roller is ≥1.5.

[0058] The spray coverage shape of the spray device can also be selected according to the number of filament bundles. For example, the spray coverage shape can be columnar, fan-shaped, etc.

[0059] The spraying device can be controlled independently or uniformly, that is, it can control one or several of the spraying devices to spray water simultaneously, or control all the spraying devices to spray water together.

[0060] Furthermore, the longitudinal washing zone includes a first collection tank for collecting the cleaning water sprayed from the first spray system;

[0061] The transverse washing zone includes a second collection tank for collecting the cleaning water sprayed from the second spray system;

[0062] The first and second collection tanks respectively include:

[0063] A liquid level detection device is used to detect the water level of the cleaning water in the collection tank;

[0064] A liquid level regulating device is used to regulate the water level of the cleaning water in the collection tank;

[0065] Preferably, the liquid level detection device is a liquid accumulation cone, and the liquid level regulating device is a liquid level regulating submersible pump or a liquid level regulating plate;

[0066] Preferably, the angle of the liquid accumulation cone is 90° to 160°.

[0067] In the above scheme, the first guide roller at the bottom of the longitudinal washing zone can be immersed in the cleaning water of the first collection tank or not; the second guide roller at the bottom of the transverse washing zone can be immersed in the cleaning water of the second collection tank or not; preferably, it is not immersed.

[0068] The bottom guide roller is immersed in the cleaning water in the collection tank. Although this can increase the contact time and length between the yarn bundle and the cleaning water, when the rotation speed of the guide roller is increased appropriately, it is easy to cause the cleaning water to splash, resulting in serious loss of cleaning water and a significant reduction in solvent recovery rate. This causes serious pollution to the production and testing workshop environment and can also easily increase the degree of fibrillation of the yarn bundle.

[0069] Furthermore, it also includes:

[0070] A concentration detection device is used to detect the concentration of cleaning water in the first collection tank and the second collection tank.

[0071] A circulation device is used to circulate low-concentration cleaning water from the transverse washing zone to the longitudinal washing zone for reuse.

[0072] The recovery device is used to recover solvents from highly concentrated cleaning water.

[0073] In the above scheme, the cleaning water is recycled using a circulation device and the solvent is recovered from the cleaning water using a recovery device, which effectively saves the amount of cleaning water and solvent used, greatly reduces costs, and reduces the degree of environmental pollution.

[0074] Furthermore, the filament washing machine system can simultaneously wash multiple filament bundles with a fineness of 10 dtex to 4000 dtex.

[0075] Preferably, the fineness of the filament bundle is 40 dtex to 2500 dtex;

[0076] Preferably, the number of filament bundles is 1 to 32.

[0077] Furthermore, after the fiber tow washing machine system cleans the fiber tow, the solvent content on the fiber tow is ≤0.02%.

[0078] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0079] (1) A single filament washing machine system can meet the requirement of washing multiple filament bundles at the same time, and can also adjust the length of the guide roller according to the number of filament bundles to achieve simultaneous washing of more filament bundles.

[0080] (2) The guide roller is controlled by a frequency converter and the linear speed is adjustable, which can meet the requirements of washing the yarn at different production speeds.

[0081] (3) The longitudinal washing zone is arranged vertically by guide rollers, which greatly increases the washing length per unit area. The equipment occupies a small area, and the spray washing causes little damage to the fiber bundle, greatly reducing fibrillation and ensuring the stability of the preparation process. The transverse washing zone buffers the characteristics of the highly hygroscopic fiber bundles of the new solvent-based cellulose fiber. Through special designs such as selective immersion of the lower guide roller, limiting of the fiber bundle by the wire groove, fiber bundle wrap angle of the guide roller, and spray coating treatment of the guide roller surface, the fibrillation of the fiber bundle is reduced, which is conducive to stable fiber preparation and gives full play to the advantages of high washing efficiency. Moreover, the solvent content of the fiber bundle after exiting the washing machine system is ≤0.02%.

[0082] (4) The independent or unified control of the spraying device, as well as the number and location of the spraying device, not only ensures that the solvent on the fiber bundle is cleaned, but also greatly saves water and reduces the impact of water flow on the quality of the fiber bundle, thus ensuring the quality of the fiber.

[0083] (5) The combined use of the collection tank and the spray system greatly improves the collection and recovery rate of solvents, and at the same time improves the environmental hygiene level of the production workshop; the high-concentration cleaning water enters the recovery system to recover solvents, and the solvent recovery efficiency is high and the energy consumption is low.

[0084] (6) The longitudinal washing zone and the transverse washing zone can be fully combined according to the actual production of the number of filaments and the spinning speed, or the positions of the longitudinal washing zone and the transverse washing zone can be exchanged to realize the selection of washing systems with multiple varieties, multiple speeds and multiple working conditions, so as to improve the washing efficiency of filaments and ensure the quality of fiber filaments. Moreover, the combination of the two washing zones can save land, reduce investment, and is more conducive to industrialization.

[0085] The present invention provides a filament washing machine system suitable for washing multiple filament bundles simultaneously. Through various optimized designs, it reduces filament wear and fibrillation. It is also suitable for washing high-speed spinning filament bundles. The system features high water utilization, energy saving, flexible adjustment, high versatility, convenient operation, and is conducive to industrial application.

[0086] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0087] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0088] Figure 1 This is a schematic diagram of the overall structure of a tow washing machine system according to the present invention;

[0089] Figure 2 This is a front view of the longitudinal washing zone structure of a tow washing machine system according to the present invention;

[0090] Figure 3 This is a left view of the longitudinal washing zone structure of a tow washing machine system according to the present invention;

[0091] Figure 4 This is a front view of the transverse washing zone structure of a tow washing machine system according to the present invention;

[0092] Figure 5 This is a left view of the transverse washing zone structure of a tow washing machine system according to the present invention;

[0093] Figure 6 yes Figure 5 A schematic diagram of the structure after the wire groove is installed on the guide roller at point P.

[0094] In the diagram: 100: Longitudinal frame; 110: First yarn splitter; 120: First guide roller; 130: First spray system; 140: First collection tank; 141: Accumulation cone; 142: Submersible pump for level adjustment; 200: Transverse frame; 210: Second yarn splitter; 220: Second guide roller; 230: Second spray system; 240: Second collection tank; 241: Level adjustment plate; 300: Trough;

[0095] A: Longitudinal washing zone; a: Individual longitudinal washing zone; B: Transverse washing zone; b: Individual longitudinal washing zone.

[0096] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0097] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention are described clearly and completely below with reference to some embodiments. Those skilled in the art will understand that the following embodiments are only used to explain the technical principles of this invention and are not intended to limit the scope of protection of this invention. For example, although this application describes the steps of the method of this invention in a specific order, these orders are not restrictive. Those skilled in the art can perform the steps in different orders without departing from the basic principles of this invention.

[0098] like Figures 1 to 6As shown, the tow washing machine system includes a longitudinal washing zone (A) and a transverse washing zone (B); the longitudinal washing zone (A) includes at least one individual longitudinal washing zone (a), and the transverse washing zone (B) includes at least one individual transverse washing zone (b); each individual longitudinal washing zone (a) includes a longitudinal frame 100, a first yarn splitter 110, a first yarn guide roller 120, a first spray system 130, and a first liquid collection tank 140, wherein the first liquid collection tank 140 is provided with a liquid level regulating submersible pump 142 and a liquid accumulation cone 141; each individual transverse washing zone (b) includes a transverse frame 200, a second yarn splitter 210, a second yarn guide roller 220, a second spray system 230, and a second liquid collection tank 240, wherein the second liquid collection tank 240 is provided with a liquid level regulating plate 241; the first yarn guide roller 120 and / or the second yarn guide roller 220 are provided with a wire groove 300.

[0099] Example 1

[0100] like Figure 1 As shown, the tow washing machine system is composed of a longitudinal washing zone and a transverse washing zone connected in series. The longitudinal washing zone includes four individual longitudinal washing zones, each of which includes a longitudinal frame, a first yarn splitter, a first yarn guide roller, a first spray system, and a first liquid collection tank. The first liquid collection tank is equipped with a liquid level regulating submersible pump and a liquid accumulation cone. The transverse washing zone includes one individual transverse washing zone, each of which includes a transverse frame, a second yarn splitter, a second yarn guide roller, a second spray system, and a second liquid collection tank. The second liquid collection tank is equipped with a liquid level regulating plate.

[0101] The first and second wire splitters are made of ceramic material, and each of the first and second wire splitters has 33 wire splitting units. Each unit has 8 first wire guide rollers in the longitudinal washing zone. The unit has two rows of second wire guide rollers in the transverse washing zone. The first and second wire guide rollers with grooves account for half of the total number of wire guide rollers, and the grooves are 8 mm deep. All wire guide rollers are coated with ceramic material to make the surface roughness less than or equal to Ra0.8. The first and second spray systems are respectively located between two adjacent wire guide rollers. The bottom first wire guide roller in the longitudinal washing zone is not immersed in the cleaning water in the first collection tank. The bottom second wire guide roller in the transverse washing zone is not immersed in the cleaning water in the second collection tank.

[0102] A new solvent-based high-speed cellulose fiber spinning machine was used for production testing. The spinning speed was 400 m / min. 32 bundles of cellulose fibers with a fineness of 40 dtex entered from the first splitter on the left side of the longitudinal washing zone of the monomers. Then, they passed through the first guide rollers arranged longitudinally in the four longitudinal washing zones of the monomers and were discharged from the first splitter on the right side. After that, they entered the transverse washing zone and entered from the second splitter on the left side. Then, they passed through the upper and lower rows of second guide rollers and were discharged from the second splitter on the right side. At the same time, during the passage of the bundle through the first and second guide rollers, the first and second spray systems continuously sprayed circulating cleaning water to spray and clean the bundle. The circulating cleaning water sprayed after the bundle was collected in the first and second collection tanks. Then, the circulating cleaning water was reused throughout the bundle washing machine system.

[0103] Example 2

[0104] The yarn washing machine system consists of a longitudinal washing zone and a transverse washing zone connected in series. The longitudinal washing zone includes 12 individual longitudinal washing zones, each of which includes a longitudinal frame, a first yarn splitter, a first yarn guide roller, a first spray system, and a first liquid collection tank. The first liquid collection tank is equipped with a liquid level regulating submersible pump and a liquid accumulation cone. The transverse washing zone includes 3 individual transverse washing zones, each of which includes a transverse frame, a second yarn splitter, a second yarn guide roller, a second spray system, and a second liquid collection tank. The second liquid collection tank is equipped with a liquid level regulating plate.

[0105] The first and second wire splitters are made of stainless steel and each has 9 wire splitting units. Each unit has 10 first wire guide rollers in its longitudinal washing zone. The unit has two rows of second wire guide rollers in its transverse washing zone. The first and second wire guide rollers with grooves account for 40% of the total number of wire guide rollers, and the grooves are 10 mm deep. All wire guide rollers are coated with ceramic material to make the surface roughness less than or equal to Ra0.8. The first and second spray systems are respectively located between two adjacent wire guide rollers. The bottom first wire guide roller in the longitudinal washing zone is not immersed in the cleaning water in the first collection tank. The bottom second wire guide roller in the transverse washing zone is also not immersed in the cleaning water in the second collection tank.

[0106] A new solvent-based high-speed cellulose fiber spinning machine was used for production testing. The spinning speed was 300 m / min. Eight bundles of cellulose fibers with a fineness of 100 dtex entered from the first splitter on the left side of the longitudinal washing zone of the single-unit longitudinal washing zone. Then, they passed through the first guide rollers arranged longitudinally in a staggered manner in the 12 single-unit longitudinal washing zones and were discharged from the first splitter on the right. After that, they entered the transverse washing zone and entered from the second splitter on the left. Then, they passed through the upper and lower rows of second guide rollers in the 3 single-unit transverse washing zones and were discharged from the second splitter on the right. At the same time, during the passage of the fiber bundle through the first and second guide rollers, the first and second spray systems continuously sprayed circulating cleaning water to spray and clean the fiber bundle. The circulating cleaning water sprayed after the fiber bundle was collected in the first and second collection tanks. Then, the circulating cleaning water was reused throughout the fiber bundle washing machine system.

[0107] Example 3

[0108] The tow washing machine system includes a longitudinal washing zone, which comprises four individual longitudinal washing zones. Each individual longitudinal washing zone includes a longitudinal frame, a first yarn splitter, a first yarn guide roller, a first spray system, and a first liquid collection tank. The first liquid collection tank is equipped with a liquid level regulating submersible pump and a liquid accumulation cone.

[0109] The first wire splitter is made of ceramic material and has 13 wire splitting units. Each unit has 8 first wire guide rollers in the longitudinal washing zone. Half of the first wire guide rollers have grooves, and the grooves are 8 mm deep. All the first wire guide rollers are coated with ceramic material so that the surface roughness is less than or equal to Ra0.8. The first spray system is located between two adjacent first wire guide rollers. The lowest first wire guide roller in the longitudinal washing zone is not immersed in the washing water in the first collection tank.

[0110] A new solvent-based high-speed cellulose fiber spinning machine was used for production testing. The spinning speed was 900 m / min. Twelve bundles of cellulose fibers with a fineness of 40 dtex entered from the first splitter on the left side of the longitudinal washing zone of the monomers. Then, they passed through the first guide rollers arranged longitudinally in four longitudinal washing zones and were exited from the first splitter on the right side. At the same time, during the passage of the bundles through the first guide rollers, the first spray system continuously sprayed circulating cleaning water to clean the bundles. The circulating cleaning water sprayed after the bundles was collected in the first collection tank. The circulating cleaning water was then reused throughout the bundle washing machine system.

[0111] Example 4

[0112] The fiber tow washing machine system includes a transverse washing zone, which comprises three individual transverse washing zones. Each individual transverse washing zone includes a transverse frame, a second fiber separator, a second fiber guide roller, a second spray system, and a second liquid collection tank. The second liquid collection tank is equipped with a liquid level regulating plate.

[0113] The second wire splitter is made of ceramic material. It has 21 wire splitting units. Each unit has two rows of second wire guide rollers in the transverse washing zone. Half of the second wire guide rollers have grooves, and the grooves are 8mm deep. All the second wire guide rollers are coated with ceramic material so that the surface roughness is less than or equal to Ra0.8. The second spray system is located between two adjacent second wire guide rollers. The lowest second wire guide roller in the transverse washing zone is not immersed in the washing water in the second collection tank.

[0114] A new solvent-based high-speed cellulose fiber spinning machine was used for production trials. The spinning speed was 190 m / min. Twenty bundles of cellulose fibers with a fineness of 40 dtex entered from the second splitter on the left side of the transverse washing zone of the monomers. Then, they passed through the upper and lower rows of second guide rollers in the three monomer transverse washing zones, and were then exited from the second splitter on the right side. At the same time, during the passage of the bundles through the second guide rollers, the second spray system continuously sprayed circulating cleaning water to clean the bundles. The circulating cleaning water sprayed after the bundles was collected in the second collection tank, and then the circulating cleaning water was reused throughout the bundle washing machine system.

[0115] Comparative Example 1

[0116] Based on Example 1, the first and second fiber splitters were not set up, while other experimental conditions remained the same.

[0117] Comparative Example 2

[0118] Based on Example 1, all wire splitters were made of non-wear-resistant materials, and other experimental conditions were the same.

[0119] Comparative Example 3

[0120] Based on Example 1, the second guide roller at the bottom of the transverse washing zone was immersed in the cleaning water of the second collection tank, and other experimental conditions were the same.

[0121] Comparative Example 4

[0122] Based on Example 2, no wire grooves were provided on all guide rollers, and other experimental conditions were the same.

[0123] Comparative Example 5

[0124] Based on Example 2, no circulation device or recovery device was set up, and other experimental conditions were the same.

[0125] Experimental Example 1

[0126] This experiment tested the cleaned filament samples, solvent recovery rate, and fibrillation degree of Examples 1 to 4 and Comparative Examples 1 to 5. The test results are shown in Table 1.

[0127] Table 1

[0128]

[0129] As shown in Table 1, the tow washing systems in Examples 1 to 4 can utilize different combinations of longitudinal and transverse washing zones depending on the tow spinning speed, meeting the washing requirements of tows spun at different speeds, especially for high-speed tows. Furthermore, they can simultaneously wash multiple tows, significantly improving work efficiency. The use of a circulation device for water recycling and a recovery device for solvent recovery, to a certain extent, meets the requirements for energy saving, cost reduction, and environmental protection. The solvent content of the tows washed by the tow washing system is less than or equal to 0.02%, indicating a low degree of fibrillation, meeting the usage requirements.

[0130] In Comparative Example 1, because a fiber separator was not used, it was impossible to clean multiple fiber bundles simultaneously. When multiple fiber bundles were cleaned simultaneously, fiber bundle interference was very likely to occur, resulting in inadequate cleaning of the fiber bundles, which greatly reduced the cleaning effect and affected the fibrillation degree of the fiber bundles and the solvent recovery efficiency.

[0131] In Comparative Example 2, because the fiber splitter is made of non-wear-resistant material, the fiber bundle is easily damaged by friction when passing through the fiber splitter, which leads to an increase in the fibrillation degree of the fiber bundle and causes a few fibers in the fiber bundle to break.

[0132] In Comparative Example 3, when the guide roller speed exceeds 200 m / min, the second guide roller in the transverse washing zone, when immersed in the cleaning water of the second collection tank, causes splashing of the circulating cleaning water. The higher the speed, the more severe the splashing, resulting in significant loss of circulating cleaning water, a substantial decrease in solvent recovery rate, and severe environmental pollution in the production test workshop. Testing after spinning revealed that increasing the guide roller speed leads to increasingly severe fibrillation and increased residual solvent in the filament bundle. Completely removing the solvent from the filament bundle requires increasing the washing length, which further exacerbates fibrillation. Therefore, the transverse washing zone type of filament bundle washing system is suitable for low-speed filament bundle washing but unsuitable for high-speed filament bundle washing, especially when the guide roller is immersed in the cleaning water or the filament bundle is submerged. This not only affects filament bundle quality but also causes environmental pollution and poses a danger to workers.

[0133] In Comparative Example 4, because the guide roller is not equipped with a groove, it is impossible to clean multiple bundles of yarn at the same time. When multiple bundles of yarn are cleaned at the same time, yarn interference is very likely to occur, resulting in inadequate cleaning of the yarn bundles, which greatly reduces the cleaning effect and affects the fibrillation degree of the yarn bundles and the solvent recovery efficiency.

[0134] In Comparative Example 5, no circulation device was installed. In order to ensure the cleaning effect of the filament bundle, a large amount of cleaning water was required, resulting in serious waste of cleaning water. In addition, no recycling device was installed, so the solvent in the cleaning water could not be recycled and reused, which greatly increased energy consumption and cost.

[0135] In summary, the yarn tow washing system designed according to this invention cleans the yarn tow. Due to its unique structural arrangement, the longitudinal washing zone significantly extends the washing length within the same footprint, saving space for post-processing. It is superior to using only the transverse washing zone in reducing the degree of fibrillation in the yarn tow, and the transverse washing zone is more suitable for cleaning yarn tows spun at low speeds. Therefore, a combination of longitudinal and transverse washing zones, similar to those in Examples 1 and 2, is optimal, as it reduces the degree of fibrillation in the yarn tow, improves washing efficiency, and reduces the equipment's footprint.

[0136] It should be noted that the degree of fibrillation is expressed by the breaking time, which refers to the time required for the fiber bundle to break. The longer the time, the fewer fuzzy fibers on the bundle, the lighter the degree of fibrillation, and the less likely it is to break; the shorter the time, the more fuzzy fibers on the bundle, the more severe the degree of fibrillation, and the easier it is to break.

[0137] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A tow washing machine system for reducing tow fibrillation, characterized in that, It includes a longitudinal washing zone (A) and a transverse washing zone (B) for cleaning the filament bundle; The filament bundles in the longitudinal washing zone (A) are conveyed and cleaned in the longitudinal direction, including at least one single longitudinal washing zone (a), which includes a first filament splitter (110) and a plurality of longitudinally arranged first filament guide rollers (120). The filament bundles in the transverse washing zone (B) are conveyed and cleaned in the transverse direction, including at least one single transverse washing zone (b), which includes a second filament splitter (210) and a plurality of transversely arranged second filament guide rollers (220). The first fiber splitter (110) and the second fiber splitter (210) are made of wear-resistant material and are respectively provided with multiple fiber splitting units. The fiber splitting units are distributed in the extension length direction of the first fiber splitter (110) and the second fiber splitter (210) to separate multiple fiber bundles. At least a portion of the first guide roller (120) and a portion of the second guide roller (220) have grooves (300) on their outer peripheral surfaces that cooperate with the filament bundle, and the grooves (300) are recessed toward the center of the first guide roller (120) or the second guide roller (220); The longitudinal washing zone (A) includes a first spray system (130), and the transverse washing zone (B) includes a second spray system (230). The first spray system (130) and the second spray system (230) each include a plurality of spray devices. The spray devices are arranged between adjacent guide rollers and are used to spray and clean the filament bundles between adjacent guide rollers. The bottommost first guide roller and second guide roller are not immersed in the cleaning water. The longitudinal washing zone (A) and the transverse washing zone (B) can be used individually or in series depending on the yarn speed. When the filament speed is in the range of 20m / min to 200m / min, the transverse washing zone (B) is used alone. When the yarn speed is in the range of 200m / min to 400m / min, the longitudinal washing zone (A) and the transverse washing zone (B) are used in series. When the filament speed is in the range of 400m / min to 1000m / min, the longitudinal washing zone (A) is used alone.

2. The tow washing machine system according to claim 1, characterized in that, The wear-resistant materials used in the first and second wire splitters are selected from one or a combination of stainless steel, ceramics, and nylon.

3. The tow washing machine system according to claim 2, characterized in that, The wear-resistant material is ceramic.

4. The tow washing machine system according to claim 1, characterized in that, The diameter of the second guide roller (220) is smaller than the diameter of the first guide roller (120).

5. The tow washing machine system according to claim 1, characterized in that, The number of guide rollers with grooves (300) is less than or equal to half the total number of the first guide roller (120) and the second guide roller (220), and the depth of the grooves (300) is 3mm to 20mm.

6. The tow washing machine system according to claim 1, characterized in that, The spraying device can also be positioned to correspond to the position of the guide roller, and is used to spray and clean the filaments wound on the guide roller.

7. A tow washing machine system according to any one of claims 1-6, characterized in that, The longitudinal washing zone (A) includes a first collection tank (140) for collecting the cleaning water sprayed from the first spray system (130); The transverse washing zone (B) includes a second collection tank (240) for collecting the cleaning water sprayed from the second spray system (230); The first collection tank (140) and the second collection tank (240) respectively include: A liquid level detection device is used to detect the water level of the cleaning water in the collection tank; The liquid level regulating device is used to regulate the water level of the cleaning water in the collection tank.

8. A tow washing machine system according to claim 7, characterized in that, The liquid level detection device is a liquid accumulation cone (141), and the liquid level regulating device is a liquid level regulating submersible pump (142) or a liquid level regulating plate (241).

9. A tow washing machine system according to any one of claims 1-8, characterized in that, Also includes: A concentration detection device is used to detect the concentration of cleaning water in the first collection tank (140) and the second collection tank (240); A circulation device is used to circulate low-concentration cleaning water from the transverse washing zone (B) to the longitudinal washing zone (A) for reuse; The recovery device is used to recover solvents from highly concentrated cleaning water.

10. A tow washing machine system according to any one of claims 1-9, characterized in that, The filament washing machine system can simultaneously wash multiple filament bundles with a fineness of 10 dtex to 4000 dtex.

11. A tow washing machine system according to claim 10, characterized in that, The filament washing machine system can simultaneously wash multiple filament bundles with a fineness of 40 dtex to 2500 dtex.

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