CN1197489A - Wet spinning method and device - Google Patents
Wet spinning method and device Download PDFInfo
- Publication number
- CN1197489A CN1197489A CN97190844A CN97190844A CN1197489A CN 1197489 A CN1197489 A CN 1197489A CN 97190844 A CN97190844 A CN 97190844A CN 97190844 A CN97190844 A CN 97190844A CN 1197489 A CN1197489 A CN 1197489A
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- spinning
- overfall
- storing box
- trunk line
- pressure
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention concerns a wet spinning device with a main line (1), which is connected via a supply line (2) to a reservoir (3), and with at least one spinning arrangement (4) which comprises a spinneret opening into a spinning tube (7) which is connected via a delivery line (5) to the main line (1) and comprises an outlet (8). The main line (1) comprises at least one pressure sensor (9) and the supply line (2) comprises a control valve (12). The pressure sensor (9) and the control valve (12) are connected to an evaluating device (10). The control valve (12) is actuated by a signal from the evaluating device (10) as a function of the measured pressure.
Description
The present invention relates to a kind of apparatus and method that are used for wet spinning.
Wet spinning is a kind of like this method, when adopting this method, the raw material of the formation silk thread of liquid state is introduced in the spinning bath by spinning-nozzle from the liquid polycomponent system of a homogeneous isotropism or anisotropic, single-phase or heterogeneous (ein-mehrphasigen), and released from its inside.As a manufacturing that example can be enumerated viscose filament yarn of wet spinning, the raw material that wherein forms silk thread is introduced in the solidification liquid.
By the known a kind of device that is used for wet spinning of EP0442405 B1.This device comprises a device for spinning, and it has the spinning-nozzle that a band leads to the band nozzle bore of spin duct.Form the raw material input spinning-nozzle of silk thread and introduce spin duct by nozzle bore.There is spinning bath to flow through in the spin duct.The raw material that forms silk thread by the spinning bath that flows only can change into solid phase lentamente, makes to form a kind of multifilament.Multifilament is extracted out from the spin duct that leads to atmosphere.There is definite relation each other in the speed of reeling off raw silk from cocoons spinning speed and the flowing velocity of spinning bath in spin duct in other words.The influence of the proportionate relationship that is subjected to spinning speed and spinning bath flowing velocity is stretched in the position of silk thread or single long filament.
Secondly known a kind of many cover device for spinning are supplied with the such device of spinning bath by a common trunk line.Each spin duct to this device for spinning links to each other with trunk line by an input pipe.Fracture of wire may appear in some position at device for spinning in the wet spinning process.If fracture of wire, this spinning station is just turned off, and the spin duct of the device for spinning that middle thus mind-set is turned off is carried spinning bath.Such problem appears in this method, because the pressure of turning off in some device for spinning spinning bath trunk lines rises.This can cause, and the flowing velocity of spinning bath changes in the still operating device for spinning.Also cause the variation of flow stream velocity and spinning speed proportionate relationship thus, thereby influence the stretching of silk thread.
The objective of the invention is to from this point: improve the known apparatus and method that are used for wet spinning in this wise, make flow stream velocity in the device for spinning spin duct in spinning process, particularly with the quantity that is in operating device for spinning irrespectively, almost remain unchanged.
The device of the feature of this task by having claim 1 and the method with feature of claim 18 solve.
Other good schemes of the Mechanical Builds that other of this device are good and this method are determined in the dependent claims.
Actual showing, the flow stream velocity in the spin duct directly depends on the supply pressure of spinning bath.Pressure in the spinning bath trunk line raises and causes that the spinning bath flow strengthens in the spin duct, thereby causes the raising of flow stream velocity.Utilize this knowledge by device of the present invention and by method of the present invention now, so that by autotelic influence remains unchanged the spinning condition in the device for spinning as far as possible to the spinning bath supply pressure.A pressure sensor is installed in trunk line for this reason.A built-in control valve in the service that connects reservoir tank by trunk line.Pressure sensor and control valve interconnect by a calculation element.Therefore can accomplish, send a signal with the control and regulation valve according to the calculation of pressure device of measuring.Thereby there is such possibility, the supply pressure of spinning bath is remained on the level of predesignating.
For the actual value of handling the trunk line internal pressure of being sent by pressure sensor is provided with a comparator, it with the pressure predesignated, be that theoretical pressure is compared with actual pressure.
Calculation element is connected with the machine central control unit in a kind of good especially concrete scheme of apparatus of the present invention and method.Being connected with control system of machine by pressure-regulating device exists such advantage, and spinning condition just rises from the beginning and can remain unchanged in the time of in starting the process that has higher spinning speed to.Particularly require flow stream velocity and spinning speed at that time to be complementary in machine start or inertia operation phase for this reason.
Adjust the spinning bath flowing velocity by means of above-mentioned pressure-regulating device in addition and have such advantage: the diameter of it and the spin duct that is connected has nothing to do.Different with liquid flow-conditioning, do not need to know the sectional area of input pipe and passage.
According to the good imagination of another kind of the present invention, the device that is proposed to be used in wet spinning is with a trunk line that links to each other with material-storing box by service, has the device for spinning of nozzle with at least one, spinning-nozzle leads to that link to each other with trunk line by input pipe, as to have an outlet passage, wherein trunk line links to each other with a pipeline with the overfall that leads to atmosphere, and wherein overfall is made in a distance, outlet top.Each outlet of a spin duct is arranged on the same measuring height.Overfall is big like this to the distance of outlet, makes it corresponding to the static pressure of predesignating in the trunk line, and liquid level is positioned on the overfall level when the normal operation of device.If some device for spinning are turned off when the device operation, the fluid pressure in the trunk line raises so, so the pressure in the pipeline also raises.The rising of trunk line internal pressure comes balance like this, and body lotion is flowed out by overfall.Reach the constant supply pressure of the inner spinning bath of trunk line thus, thereby also reach the almost constant flow stream velocity in spin duct inside.
The device that is used for wet spinning can move with different trunk line pressure.Perhaps this need decide according to the raw material that forms silk thread.Suggestion for this reason: make the overfall of spin duct adjustable to the distance of outlet.Overfall realizes so preferably that to the adjustability of outlet distance pipeline is made telescopic.Also can reach same effect in this wise, i.e. the pipeline of application flexibility, the size long enough of pipeline wherein is even make outlet when reaching maximum allowble pressure in trunk line can reach the measuring height of regulation.
The such structure of preferential employing, overfall is formed by the container-like expansion of pipeline when this structure.
The shutoff of one or some device for spinning causes overflowing of spinning bath in the pipeline as mentioned above.In order to collect the spinning bath that overflows, be preferably in the outlet below gathering case is set.
Assembling case according to the good version of another kind links to each other with material-storing box by a reflux line.The device of this version has such advantage: reduce the consumption of spinning bath.
According to another good imagination of the present invention, the device that is proposed to be used in wet spinning is with a trunk line that links to each other with material-storing box by service, has the device for spinning of spinning-nozzle with at least one, spinning-nozzle leads to that link to each other with trunk line by input pipe, as to have an outlet spin duct, the material-storing box that wherein is contained in spin duct outlet top has an overfall that leads to atmosphere, and wherein overfall is made in a distance, outlet top.Owing to making, the material-storing box that is contained in the outlet top determined a static pressure in the trunk line.Since the shutoff of single device for spinning when static pressure in the trunk line is changed the liquid level in the material-storing box raise.When the liquid level in the material-storing box reached the overfall plane, body lotion flowed out by overfall, and the static pressure in the transition conduit obtains balance thus.Said apparatus has such advantage: it does to such an extent that efficient is high and solid.
Another kind of concrete structure suggestion according to this device: overfall is made of the pipe that a perpendicular distributes, and it partly inserts in the material-storing box.
In order to regulate the supply pressure in the trunk line, and therefore regulate flow stream velocity in the passage, the suggestion material-storing box can link to each other by the vertical planker that moves with one, and planker can be locked on the position of predesignating.In order to compensate in the wet type spinning process because spinning bath flows out the minimizing that causes body lotion in the material-storing box from spin duct, the suggestion material-storing box has a charging aperture, can import spinning bath to material-storing box according to the liquid level in the material-storing box by this charging aperture.When material-storing box had bigger basal plane in horizontal plane, the minimizing of the interior spinning bath of material-storing box was smaller, and therefore this minimizing can not produce significantly influence to flow stream velocity in the pipeline to the influence of trunk line internal pressure.
According to the good concrete structure suggestion of another kind, closed shape is installed in one and is hinged on the arm on the tank wall, that have buoy.Cancelled expensive and sensitive liquid surface height sensor thus.
Other advantages of the present invention and feature are illustrated by means of the preferential embodiment of expression in the accompanying drawings.Wherein expression:
Fig. 1 is used for first embodiment of the device of wet spinning,
Fig. 2 is used for the schematic diagram of second embodiment of the device of wet spinning,
Fig. 3 is used for the 3rd embodiment of the device of wet spinning.
Expression is used for the first preferential embodiment of the device of wet spinning among Fig. 1.The device that is used for wet spinning has a trunk line 1, and it links to each other with material-storing box 3 with control valve 12 by a service 2.In trunk line 1, carry for the necessary spinning bath of wet spinning.
A plurality of device for spinning 4 link to each other with trunk line 1.4 device for spinning of expression among Fig. 1.Each device for spinning 4 links to each other with trunk line 1 by an input pipe 5.A stop valve 6 is housed respectively in each input pipe 5.
Each device for spinning comprises a spinning-nozzle 35, can carry the raw material that forms silk thread to it by pipeline 36.Spinning-nozzle 35 has a plurality of nozzle bores that do not draw and, and they lead to spin duct 7.Spin duct 7 has an outlet 8 at its free end.
In spinning process, give the raw material spinning-nozzle delivering liquid, that form silk thread by pipeline 36.The feed stream of formation silk thread is crossed nozzle bore and is entered spin duct 7.Spin duct 7 links to each other with input pipe 5, makes spinning bath can flow into spin duct 7.The raw material that the spinning bath that flows in spin duct will form silk thread is transformed into solid-state.Spinning bath and silk thread leave spin duct 7 by exporting 8.Be collected in accommodating in the case of not drawing and from exporting the spinning bath that flows out 8, and re-enter material-storing box 3 by a regenerative process where necessary, reach circulating of spinning bath thus.
If conclude in a device for spinning 4 fracture of wire for example to occur, so Xiang Guan device for spinning 4 is switched off.The stop valve 6 of relevant device for spinning 4 is also closed in addition, comes out can not flow into relevant spin duct 7 again by the spinning bath of relevant input pipe 5 from trunk line thus.One or several device for spinning 4 such shutoffs cause the rising of trunk line 1 internal pressure.In order to ensure the difference of spinning baths in the spin duct 7 and speed (ratio) that forms the raw material of silk thread and the proportionate relationship of adjusting in advance only be in one very little, within the scope that can allow, be provided with a pressure sensor 9 in trunk line 1, it measures the supply pressure in the trunk line 1.Pressure sensor 9 links to each other with calculation element 10 by electrical wiring 11, and electrical wiring transmits the measuring-signal of pressure sensor 9.Calculation element 10 compares gaging pressure (actual pressure) and a pressure of predesignating (theoretical pressure).If the difference between actual pressure and the theoretical pressure greater than given threshold value, is so just controlled the control valve 12 that is contained in the service by calculation element 10.Regulate in this wise or change the body lotion flow that flows to trunk line 1 by control valve 12, make to reach the theoretical pressure of predesignating in the trunk line.Guarantee that by this measure the flow stream velocity in each device for spinning that is in operation almost remains unchanged.
As shown in fig. 1, calculation element 10 links to each other with the central control system 37 of machine.Machine central control system 37 is given calculation element 10 authorized pressure values (theoretical pressure).Therefore there is such possibility, supply pressure and machine running status at that time in the trunk line 1 are complementary.Particularly multifilament is extracted out from spin duct 7 with less spinning speed when machine start.Flow stream velocity in this stage spin duct 7 of process must be complementary with spinning speed.This coupling is regulated by the pressure in the trunk line 1 and is carried out.Therefore can reduce the substandard products silk thread significantly.
Expression is used for second embodiment of the device of wet spinning among Fig. 2.The device that is used for wet spinning comprises a trunk line 1, and it links to each other with the material-storing box that comes that do not draw by service 2.Device comprises a plurality of device for spinning 4, and they link to each other with trunk line 1 by an input pipe 5 respectively.The structure of each device for spinning 4 is corresponding to the structure of well-known device for spinning.Valve 6 as input pipe 5 closing organs is installed in each input pipe 5 separately.
The spacing h of overfall 14 is adjustable.Pipeline 13 is made telescopic for this reason.It has one first outer segment 13a and an interior pipeline section 13b, and interior pipeline section can vertically move in outer segment 13a.Be provided with sealing device 15 between pipeline section 13a and the 13b, make liquid that can not between outer segment 13a inner surface and interior pipeline section 13b shell surface, flow out.Be provided with manipulation device 16 in order to adjust spacing h, can insert outer segment 13a or therefrom pull out by pipeline section 13b in the manipulation device, as shown in Figure 2.As seen from Figure 2, overfall 14 is made of the expansion of container shape.Do one and assemble case 17 below overfall 14, it has a return duct 18.Return duct 18 can link to each other with the material-storing box that comes that do not draw directly or indirectly.
If there is a device for spinning 4 to turn off in the wet spinning process, the valve 6 in the wherein relevant device for spinning input pipe 5 is also closed, and the pressure in the trunk line 1 will raise so.This pressure raises and causes the rising of liquid level in the pipeline 13.Because overfall 14 is arranged on apart from the distance of device for spinning outlet 8 regulations, body lotion flows out from pipeline 13 by overfall 14, produces a pressure compensation thus in trunk line 1.Almost remain unchanged by the flow stream velocity in the spin duct 7 of each device for spinning of not turning off of this compensation.
Play our the 3rd embodiment referring to the device that is used for wet spinning now, it is as schematically representing among Fig. 3.Device comprises a plurality of device for spinning 4, and they link to each other with trunk line 1.Each device for spinning 4 has a spinning-nozzle 35, can carry the raw material that forms silk thread to it by pipeline 36.Secondly each device for spinning 4 has a spin duct 7, and it links to each other with trunk line 1 by input pipe 5.A valve 6 is installed in each input pipe.
Material-storing box 3 links to each other with a planker 20, and it can vertically move.Planker 20 moves across a certain distance and in the track 21,22 that be arranged in parallel two phases.Each track 21,22 has some through holes 23, they do the certain spacing of being separated by each other.In order to lock planker 20 bolt 24 is passed hole 23 when material-storing box 3 and planker 20 are in the position of regulation, this bolt embeds in the locking hole 25 on planker 20.Move in order to ensure the vertical of material-storing box 3, service 2 is made telescopic.Service 2 has first a pipeline section 2a who links to each other with trunk line 1.Be embedded in one second pipeline section 2b at the first pipeline section 2a, the bottom surface 2b of it and material-storing box 3 links to each other.The size of second pipeline section is made like this, even make that it can not take off yet during in the extreme higher position when material-storing box 3 from the first pipeline section 2a.The size of second pipeline section is also done so on the other hand, and it can not knock the wall of trunk line 1 when material-storing box 3 is in extreme lower position.Between first pipeline section and second pipeline section, sealing device is housed.The pipeline section 2a and the 2b of service 2 also can move.
Material-storing box 3 has a charging aperture 28, and liquid can be by its input material-storing box 3.Charging aperture 28 links to each other with the cover plate 29 of material-storing box 3.The outlet 30 of charging aperture 28 can be closed by means of a closed shape 31, makes material-storing box can only import the body lotion amount of regulation.Closed shape 31 is contained on the arm 32 that is hinged on the tank wall 33.Arm 32 has a buoy 34.If the liquid level of material-storing box 3 inside descends, arm 32 is rotated down so, so closed shape 31 is opened the outlet 30 of charging aperture 28.Along with the rising of liquid level, because the rotation of the buoyancy arm 32 of buoy 34, closed shape 31 is closed the outlet 30 of charging aperture 28 when reaching the liquid level of regulation thus.The position of closed shape 31 when the outlet 30 of expression charging aperture 28 is opened in Fig. 3.
Difference in height in material-storing box 3 and the trunk line 1 between the liquid level has determined the static pressure of body lotion in the trunk line 1.Therefore by planker 20 and can adjust to different supply pressures in the mobile trunk line 1 of material-storing box 3.
If a device for spinning 4 of device need be turned off, the input pipe 5 of therefore relevant device for spinning also cuts out, and the supply pressure in the trunk line 1 will raise.The rising of trunk line 1 internal pressure plays a part to change liquid level in the material-storing box 3.If liquid level is in the overfall 14 same planes, body lotion will flow out by overfall 14 and pipe 19 from material-storing box 3 so.
Claims (20)
1. the device that is used for wet spinning is at least with a device for spinning (4) with a spinning-nozzle (35) and spin duct (7); With a trunk line (1) of carrying spinning bath, it links to each other with device for spinning (4) by input pipe (5); Be with a material-storing box (3), it links to each other with trunk line (1) by service (2), it is characterized in that: trunk line (1) has a pressure sensor (9), service (2) has a control valve (12), wherein pressure sensor (9) links to each other with calculation element (10) with control valve (12), and control valve (12) is controlled by the signal of calculation element (10) according to the pressure of measuring.
2. by the device of claim 1, it is characterized in that: calculation element (10) has a comparator, and it compares the pressure of regulation and the pressure of measurement.
3. by the device of claim 1 or 2, it is characterized in that: calculation element (10) links to each other with machine central control unit (37), and it predesignates a force value to calculation element.
4. by each device of claim 1 to 3, it is characterized in that: a plurality of device for spinning (4) link to each other with trunk line (1) by a stop valve (6) that is contained in the input pipe (5) separately.
5. by the device of each or claim 1 preamble of claim 1 to 4, it is characterized in that: trunk line (1) links to each other with a pipeline (13) with the overfall (14) that is communicated with atmosphere, and distance (h) was located above wherein overfall (14) was made in spin duct outlet (8).
6. by the device of claim 5, it is characterized in that: overfall (14) is adjustable to the distance (h) of spin duct outlet (8).
7. by the device of claim 6, it is characterized in that: pipeline (13) is made telescopic.
8. by claim 5,6 or 7 device, it is characterized in that: overfall (14) is formed by the expansion of a container shape.
9. by each device of claim 4 to 8, it is characterized in that: overfall (14) below is provided with a gathering container (17).
10. by the device of claim 9, it is characterized in that: assemble container (17) and link to each other with material-storing box by return duct (18).
11. device by each or claim 1 preamble of claim 1 to 4, it is characterized in that: the material-storing box (3) that is contained in spin duct outlet (8) top has an overfall that is communicated with atmosphere (14), and distance (h) was located above wherein overfall (14) was made in spin duct outlet (8).
12. the device by claim 11 is characterized in that: overfall (14) is made of the pipe (19) that a perpendicular distributes, and it partly inserts material-storing box (3).
13. by the device of claim 11 or 12, it is characterized in that: material-storing box (3) links to each other with a vertically moving planker (20), and planker can be locked on the position of regulation.
14. by claim 11,12 or 13 device, it is characterized in that: material-storing box (3) has a charging aperture (28), imports body lotion according to the liquid level in the material-storing box (3) to material-storing box by it.
15. by the device of claim 14, it is characterized in that: charging aperture (28) has an outlet (30), and it is installed in the top of overfall (14) basically; Also have a closed shape (31), when the liquid level in the material-storing box (3) is lower than overfall (14), closed shape will export (30) and open.
16. by the device of claim 14, it is characterized in that: closed shape (31) is contained on the arm (32) that is hinged on the tank wall (33), and arm (32) has a buoy (34).
17. by claim 14,15 or 16 device, it is characterized in that: charging aperture (28) is made telescopic.
18. be used for the method for multifilament wet type spinning, wherein silk thread one with the device for spinning of a spinning-nozzle and a spin duct in spinning, and supply with spinning bath by means of trunk line to device for spinning, it is characterized in that: the supply pressure of spinning bath can irrespectively be regulated with device for spinning in the trunk line.
19. by the method for claim 18, it is characterized in that: the regulating system of supply pressure links to each other with control system of machine in this wise, makes to change supply pressure when machine start and/or inertia operation.
20. method by claim 18 or 19, it is characterized in that: carry spinning bath to a plurality of device for spinning, the adjusting of supply pressure is carried out in this wise, makes each device for spinning and the quantity of the device for spinning that needs to supply with irrespectively obtain the spinning bath of same quantity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19626971 | 1996-07-04 | ||
| DE19626971.7 | 1996-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1197489A true CN1197489A (en) | 1998-10-28 |
Family
ID=7798929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97190844A Pending CN1197489A (en) | 1996-07-04 | 1997-07-02 | Wet spinning method and device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0874924A1 (en) |
| CN (1) | CN1197489A (en) |
| CZ (1) | CZ103498A3 (en) |
| WO (1) | WO1998001606A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961017A (en) * | 2019-11-26 | 2020-04-07 | 浙江嘉华特种尼龙有限公司 | Full-automatic spinning emulsified oil supply system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH086203B2 (en) * | 1986-07-03 | 1996-01-24 | 東レ株式会社 | Method for producing thermoplastic synthetic fiber |
| DE4004798A1 (en) * | 1990-02-16 | 1991-08-22 | Akzo Gmbh | METHOD AND DEVICE FOR PRODUCING MOLDED BODIES |
| CH683923A5 (en) * | 1991-09-23 | 1994-06-15 | Rieter Ag Maschf | A stretching chamber arrangement. |
-
1997
- 1997-07-02 CZ CZ981034A patent/CZ103498A3/en unknown
- 1997-07-02 EP EP97930475A patent/EP0874924A1/en not_active Withdrawn
- 1997-07-02 CN CN97190844A patent/CN1197489A/en active Pending
- 1997-07-02 WO PCT/EP1997/003450 patent/WO1998001606A1/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961017A (en) * | 2019-11-26 | 2020-04-07 | 浙江嘉华特种尼龙有限公司 | Full-automatic spinning emulsified oil supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998001606A1 (en) | 1998-01-15 |
| CZ103498A3 (en) | 1998-07-15 |
| EP0874924A1 (en) | 1998-11-04 |
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