CN214383816U - A draft winding system for production of Lyocell fibre - Google Patents
A draft winding system for production of Lyocell fibre Download PDFInfo
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- CN214383816U CN214383816U CN202120311963.9U CN202120311963U CN214383816U CN 214383816 U CN214383816 U CN 214383816U CN 202120311963 U CN202120311963 U CN 202120311963U CN 214383816 U CN214383816 U CN 214383816U
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Abstract
The utility model provides a draft winding system for production of Lyocell fibre belongs to Lyocell ll fibre production technical field, which comprises a frame, be equipped with in the frame and pull the roller set, the below of pulling the roller set is equipped with the water catch bowl, it falls into two-layerly to pull the roller set, and the carry over pinch rolls level setting in this two-layer pull roller set, upside carry over pinch rolls and lower floor carry over pinch rolls staggered arrangement, and the end connection driven gear in the frame is fixed to the carry over pinch rolls, be equipped with drive gear in the frame, drive gear and driven gear pass through the chain and connect the closed transmission system of formation, are equipped with the godet respectively at the both ends of two-layer pull roller set, and the below of godet is equipped with the water collector, the water collector sets up in the top of water collector, is equipped with the aperture on the water collector, is equipped with the compression roller on the carry over pinch rolls top along. The traction system not only improves the cohesive force of the tows, but also realizes energy conservation and consumption reduction and reduces the cost.
Description
Technical Field
The utility model belongs to the technical field of the production of Lyocell fibre, specifically relate to a draft winding system for production of Lyocell fibre.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
The regenerated cellulose fiber is produced from plant resources which are continuously regenerated in nature, and is a renewable resource which can be continuously developed. With the increasing shortage of petroleum resources and the 'white pollution' caused by the undegradability of petroleum products, the regenerated cellulose fiber attracts more and more attention due to the excellent use performance and reproducibility.
The Lyocell fiber is prepared by directly mixing cellulose pulp with an aqueous solution of N-methylmorpholine-N-oxide (NMMO), heating, vacuumizing, dehydrating and defoaming the mixture to prepare a spinning solution, and then performing a spinning process of dry-jet wet spinning to prepare the novel cellulose fiber with excellent performance, namely Lyocell fiber. The production process of the cellulose fiber is a physical process and basically does not generate chemical reaction, and a large amount of waste liquid, waste gas, waste residue and the like generated by adding various chemical reagents such as carbon disulfide and the like in the production of a viscose method are saved, wherein the solvent NMMO is nontoxic, and the recovery and cyclic utilization rate can reach 99.5 percent at most, so the process becomes the cellulose fiber production process which is most advocated in the world at present, and the Lyocell fiber is also called as '21 actual green fiber'.
The quality of the Lyocell fiber is greatly influenced by the equipment, wherein the drafting machine is important equipment, the drafting machine determines the stability of a fiber product, the drafting machine provides drawing power for fiber tows, spinning solution trickles from a spinneret orifice are drafted by 3-10 times, cellulose molecular chains are pre-oriented, the fibers are further oriented and crystallized, the crystallinity of the fibers is directly influenced, and physical indexes of the fiber product, such as dry breaking strength, dry breaking elongation and the like, are finally influenced.
The inventor finds that: the existing factors influencing the stability of the drafting machine mainly comprise two factors, namely the stability of a motor providing a power source and the stability of a transmission mechanism, and the cohesive force of a drafting roller to tows.
SUMMERY OF THE UTILITY MODEL
Technical problem to prior art existence, the utility model provides a draft winding system for Lyocell fibre production, this traction system has not only improved the cohesive force to the tow, has still realized energy-conservation and has subtracted consumption, reduce cost.
The utility model provides an at least embodiment provides a draft winding system for Lyocell fibre production, which comprises a frame, be equipped with in the frame and pull the roller set, the below of pulling the roller set is equipped with the water catch bowl, it falls into two-layer to pull the roller set, and the carry over pinch rolls level setting in this two-layer roller set that pulls, upper carry over pinch rolls and lower floor carry over pinch rolls staggered arrangement, and the end connection driven gear in the frame is fixed to the carry over pinch rolls, be equipped with drive gear in the frame, drive gear and driven gear pass through the chain and connect and form closed transmission system the both ends of two-layer roller set that pulls are equipped with the godet respectively, and the below of godet is equipped with the water collector, the water collector sets up in the top of water catch bowl, is equipped with the aperture on the water collector, is equipped with the compression roller at the carry over pinch rolls top of the silk end of upper carry over pinch rolls.
Further, the top of compression roller is equipped with the mount, the mount sets up in the frame, the mount is equipped with and drives actuating cylinder, drives actuating cylinder and is connected with the compression roller.
Further, the water collecting tank is respectively connected with the coagulation bath water tank and the NMMO solution recovery tank, and a pipeline pump is arranged between the water collecting tank and the NMMO solution recovery tank.
Furthermore, liquid level meters are arranged in the water collecting tank, the coagulation bath water tank and the NMMO solution recovery tank.
Further, the coagulating bath groove is also connected with the coagulating bath of the spinning machine through a pipeline.
Further, the coagulation bath tank is also connected with the NMMO recovery tank through a pipeline.
Furthermore, the device also comprises a washing water supply tank, wherein two water outlet pipelines are separated from a water outlet of the washing water supply tank, the first pipeline is connected with the NMMO solution recovery tank, the second pipeline is communicated with the spray pipe, and a heat exchanger is arranged on the second pipeline.
Furthermore, an automatic control valve and a thermometer are arranged on a water inlet pipeline on the heat exchanger.
Furthermore, a drain valve is arranged on the second pipeline.
Furthermore, water outlet holes are formed in the surface of the spraying pipe.
The utility model has the advantages as follows:
(1) the utility model provides a carry over pinch rolls in traction draft machine system sets up two-layerly, and two-layerly crisscross distribution, and a closed transmission system is constituteed to the tip of these carry over pinch rolls simultaneously, cooperates the godet roller at carry over pinch rolls both ends simultaneously, has improved the carry over pinch rolls to the fibre silk cohesive force for the silk bundle should not skid, improves the homogeneity and the stability of fibre silk bundle.
(2) The utility model provides an outlet end sets up the compression roller in drawing draft machine system, through adjusting the pressure between compression roller and the carry over pinch rolls, when not influencing the conveying of fibre silk bundle, effectively prick out unnecessary solution in the fibre silk bundle, ensure that the fibre silk bundle can not drip to ground to NMMO solution in the next process data send process.
(3) The utility model provides a water catch bowl and NMMO solution accumulator and coagulation bath water tank on the frame are connected among the traction draft machine system, and the NMMO solvent that is replaced in the water catch bowl can be fused with the spinning machine coagulation bath that the coagulation bath water tank was received on the one hand and continue to provide the spinning machine, and on the other hand can take out the accumulator with unnecessary solvent through the tubing pump in, through purifying concentrated recycling, has avoided the waste of resource, energy saving and consumption reduction, reduce cost.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is an overall structural diagram of a drafting and winding system for Lyocell fiber production according to an embodiment of the present invention.
In the figure: 1. a drawing winder, 11, a first godet roller, 12, a first drawing roller, 13, a second drawing roller, 14, a third drawing roller, 15, a fourth drawing roller, 16, a fifth drawing roller, 17, a motor, 18, a press roller, 19, a cylinder, 120, a second godet roller, 121, a water receiving tank, 122, a water baffle, 123, a first pipeline pump, 124, a first liquid level meter, 125, a water receiving tray, 21, a coagulation bath tank, 22, a second liquid level meter, 23, an NMMO solution recovery tank, 24, a third liquid level meter, 31, a winding washing water supply tank, 32, a heat exchanger, 33, a second pipeline pump, 34, a temperature sensor, 35, a self-control valve, 36, a flow meter, 37, a fourth liquid level meter 38 and a drain valve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The embodiment of the utility model provides a draft machine system for preparation of Lyocell fibre, this draft system mainly include draft winder system, retrieve aqueous solution system of washing, coiling washing water supply system.
As shown in fig. 1, the draft winder system mainly comprises a draft winder 1 and traction rollers arranged on the draft winder 1, the traction rollers are arranged in two layers, one side of the upper surface of the draft roller is provided with three traction rollers arranged horizontally, the traction rollers comprise a first traction roller 12, a third traction roller 14 and a fifth traction roller 18, the lower layer of the draft roller is provided with two traction rollers arranged horizontally, the draft roller comprises a second traction roller 13 and a fourth traction roller 15, the upper traction roller and the lower layer of the draft roller are distributed in a staggered mode, the end part of each traction roller is fixed on a rack of the draft winder 1 through a bearing, the end part of each traction roller is connected with a driven gear, and the driven gear on each traction roller is arranged inside the rack.
Furthermore, a driving motor is fixed at the rear part of the frame, the driving motor is connected with a driving gear, the driving gear and a driven gear on each drawing roller are connected through a transmission chain to form a closed loop transmission system, the Lyocell fiber tows are wound on the drawing rollers according to a certain sequence, and drawing power (not shown in the figure) is provided for the fiber tows through the drawing rollers.
The top of the traction winding machine 1 is also provided with a spray pipe, and the spray pipe is connected with a water inlet pipe and comes from a washing water supply system; the design of shower downside face has the aperture to guarantee that the washing water can evenly spout downwards in the water pipe direction, carry out preliminary washing to the fibre silk bundle and then replace the NMMO solvent in the fibre, the NMMO solvent that replaces can flow in the water receiving tank finally.
Furthermore, in this embodiment, two ends of the two side pulling rollers are respectively provided with a godet for guiding the running direction of the filament bundle, the first godet 11 and the second godet 120 are respectively provided with a driving motor 17 for driving the godet to rotate, and a water receiving tray 125 is arranged at the bottom of each godet on the frame and used for collecting the solution under the filament bundle contacting the godet, wherein the lower end of the water receiving tray is provided with a small hole, and the solution in the water receiving tray flows into the water receiving tank 121 along the small hole.
As shown in fig. 1, in this embodiment, a pressing roller 18 parallel to the drawing roller is disposed at one end of the upper drawing roller in the arrangement direction, i.e., the filament outlet end, and the pressing roller is disposed on the top of the drawing roller and fixed to the frame through a bracket, an air cylinder 19 for controlling the drawing roller to move up and down is disposed on the bracket, and an expansion link of the air cylinder is connected to the pressing roller, so that the pressure between the pressing roller and the drawing roller is adjusted through the control of the air cylinder, thereby effectively squeezing out more solution in the fiber tow without affecting the delivery of the fiber tow.
Preferably, the outer edge of the water receiving tank 121 in this embodiment is designed with a water baffle 122, so as to prevent the textile washing water from splashing outside.
Therefore, the traction rollers in the traction drafting machine system are arranged in two layers and are distributed in a staggered manner according to the arrangement of the upper three and the lower two, meanwhile, the end parts of the traction rollers form a closed transmission system, and simultaneously, the traction rollers are matched with the godet rollers at the two ends of the traction rollers, so that the cohesive force of the traction rollers to the fiber yarns is improved, and the tows are not easy to slip.
Of course, in other embodiments, the pulling rolls may be arranged in a top-four-bottom-three manner.
Along with the NMMO solvent that the replacement of storing in the water receiving tank came out is more and more, water receiving tank 121 in this embodiment is inside to be equipped with first level gauge 124, the bottom of water receiving tank is connected with NMMO solution recovery tank 23 through first tubing pump 123 simultaneously, be used for measuring the liquid level height of solution in water receiving tank 121 through first level gauge 124, when the NMMO solvent that the replacement in water receiving tank 121 came out surpassed the water level of setting for in the basin, first tubing pump can automatic start, pump the NMMO solvent in NMMO solution recovery tank 23, prevent that the NMMO solvent from overflowing, NMMO solution recovery tank also designs simultaneously has third level gauge 24, surpass certain liquid level positive displacement pump automatic start and carry the NMMO solution to purification recovery workshop, the liquid level is less than the setting position pump and stops certainly.
Further, the system for recovering the washing water solution mainly comprises a coagulation bath water tank 21, an NMMO solution recovery tank 23 and a connecting pipeline, wherein the coagulation bath water tank 21 is connected with a water receiving tank 121 arranged at the lower part of the rack through a pipeline and is used for collecting the NMMO solution sent from the water receiving tank, meanwhile, the coagulation bath water tank 21 is also connected with a spinning machine coagulation bath and the NMMO solution recovery tank 23, wherein the concentration of the NMMO in the coagulation bath water tank needs to be controlled to be 30% -40%, but generally, the concentration of the NMMO from the spinning machine coagulation bath is generally more than 40%, the concentration of the NMMO from the drawing and winding machine water receiving tank is generally less than 15%, the NMMO concentration and the NMMO concentration are flowed into the coagulation bath water tank according to a certain proportion to keep the concentration of the NMMO at 30% -40%, then the NMMO concentration is conveyed to the spinning machine for use by the spinning machine, meanwhile, the coagulation bath water tank 21 is also connected with the NMMO solution recovery tank 23, a third liquid level meter 37 is arranged on the coagulation bath water tank 21, detect the height of inside liquid through this level gauge, in liquid pump with inside when surpassing horizontal line draws NMMO solution accumulator 23 through the tubing pump, also will be used for avoiding coagulating bath basin 21 interior solution to spill over, can realize energy saving and consumption reduction like this. Reduce the cost
Further, as shown in fig. 1, the winding wash water supply system in the present embodiment mainly includes auxiliary parts such as a winding wash water supply tank 31, a heat exchanger 32, a pipe, and a thermometer.
The winding washing water supply tank 31 is mainly connected with two devices, wherein one device is a washing machine water receiving tank for ensuring the source of the winding machine washing water, and the other device is a heat exchanger for adjusting the temperature of the drawing winding machine washing water.
Specifically, an outlet of the winding washing water supply tank 31 is connected to the heat exchanger 32 through a pipe, and a second pipe pump 33 and a drain valve 38 are provided between the winding washing water supply tank and the heat exchanger 32, wherein the drain valve 38 is used to discharge the water stored in the pipe when the pipe is serviced. The fourth level gauge 22 is provided on the winding washing water supply tank 31.
Further, the heat exchanger 32 is a plate heat exchanger, which is used to adjust the temperature of the washing water to keep the temperature of the washing water within a certain temperature range.
The heat exchanger is provided with a temperature sensor 34 and a flow meter 36, the temperature of the washing water is controlled by the thermometer, and the flow meter controls the flow of the washing water. The top water inlet pipe of the plate heat exchanger flows 120-degree heating water, the top water inlet pipe is provided with a self-control valve 35, the plate heat exchanger adjusts the heating speed according to the thermometer, and the temperature is guaranteed not to fluctuate greatly.
It should be noted that the water flowing out from the winding washing water supply tank 31 is divided into two paths, one of the two paths enters the spraying pipe on the rack through the heat exchanger 32, the other path is connected to the NMMO solution recovery tank 23 through a pipeline, the pipeline is also provided with a self-control valve 37, the self-control valve 37 is controlled by a liquid level meter of the winding washing water supply tank 31, after a certain liquid level is exceeded, a liquid discharge pump is automatically started to convey the solution in the tank to the NMMO solution recovery tank 23, and the pump stops automatically when the liquid level is lower than the set position.
The following describes in detail the drafting and winding method for producing Lyocell fiber, wherein the drafting and the water washing are carried out simultaneously, and the specific steps are as follows:
(1) drafting: the fiber tows are led in by the first guide roller, are sequentially wound on the five drawing rollers, are rolled out through the press roller to form moisture, and are led out by the second godet roller to lead to the next process.
(2) Supplying washing liquid: the water in the water supply tank is conveyed to the heat exchanger by the pipeline pump, and the washing water is heated by the heat exchanger to reach a set temperature and conveyed to the spray pipe; the delivery volume of the pipeline pump is greater than the demand of the spray pipe, and the excess water is controlled by an automatic control valve on the branch pipeline and delivered to the recovery water tank; wherein the heat supply amount of the heat exchange plate is adjusted by adjusting the water inflow at 120 ℃ through an automatic control valve.
(3) Washing water recovery: the drafting winder receives the aqueous solution in the water tank, a part is conveyed to the coagulating bath trough through the pipeline, a part is conveyed to the NMMO solution recovery tank through the pipeline pump; the bottom of the water receiving tank is connected with a liquid level meter, and the start and stop of the pipeline pump are adjusted according to the liquid level meter.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. The utility model provides a draft winding system for production of Lyocell fibre, includes the frame, be equipped with the traction roller set in the frame, the below of traction roller set is equipped with water catch bowl, its characterized in that:
the utility model discloses a drawing roller group, including drawing roller group, draw roller group, upside carry over pinch rolls and lower floor carry over pinch rolls staggered arrangement, the end connection driven gear of carry over pinch rolls fixing in the frame, be equipped with drive gear in the frame, drive gear and driven gear pass through the chain and connect and form closed transmission system, are equipped with the godet respectively at the both ends of two-layer drawing roller group, and the below of godet is equipped with the water collector, the water collector sets up in the top of water collector, is equipped with the aperture on the water collector, is equipped with the compression roller at the carry over pinch rolls top that the upper strata carry over pinch rolls along.
2. A draw winding system for Lyocell fiber production as claimed in claim 1, wherein: the top of compression roller is equipped with the mount, the mount sets up in the frame, the mount is equipped with and drives actuating cylinder.
3. A draw winding system for Lyocell fiber production as claimed in claim 1, wherein: the water collecting tank is respectively connected with the coagulation bath tank and the NMMO recovery tank, and a pipeline pump is arranged between the water collecting tank and the solution recovery position.
4. A draw winding system for Lyocell fiber production as claimed in claim 3, wherein: liquid level meters are arranged in the water collecting tank, the coagulating bath tank and the NMMO recovery tank.
5. A draw winding system for Lyocell fiber production as claimed in claim 3, wherein: the coagulating bath groove is also connected with the coagulating bath of the spinning machine through a pipeline.
6. A draw winding system for Lyocell fiber production as claimed in claim 3, wherein: the coagulating bath tank is also connected with the NMMO recovery tank through a pipeline.
7. A draw winding system for Lyocell fiber production as claimed in claim 1, wherein: still include the washing water supply tank, two outlet pipe way are divided to the delivery port of washing water supply tank, and first pipeline is connected with the NMMO accumulator, and the second pipeline is linked together with the shower, be equipped with the heat exchanger on the second pipeline.
8. A draw winding system for Lyocell fiber production as claimed in claim 7, wherein: an automatic control valve and a thermometer are arranged on a water inlet pipeline on the heat exchanger.
9. A draw winding system for Lyocell fiber production as claimed in claim 7, wherein: a drain valve is arranged on the second pipeline.
10. A draw winding system for Lyocell fiber production as claimed in claim 7, wherein: and water outlet holes are formed in the surface of the spray pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120311963.9U CN214383816U (en) | 2021-02-03 | 2021-02-03 | A draft winding system for production of Lyocell fibre |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120311963.9U CN214383816U (en) | 2021-02-03 | 2021-02-03 | A draft winding system for production of Lyocell fibre |
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| CN214383816U true CN214383816U (en) | 2021-10-12 |
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| CN202120311963.9U Active CN214383816U (en) | 2021-02-03 | 2021-02-03 | A draft winding system for production of Lyocell fibre |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813511A (en) * | 2021-02-03 | 2021-05-18 | 山东绿纤工程设计有限公司 | Drafting and winding system and method for Lyocell fiber production |
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2021
- 2021-02-03 CN CN202120311963.9U patent/CN214383816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813511A (en) * | 2021-02-03 | 2021-05-18 | 山东绿纤工程设计有限公司 | Drafting and winding system and method for Lyocell fiber production |
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