CN109731371A - A kind of high viscosity spinning solution continuous defoaming device and method - Google Patents

A kind of high viscosity spinning solution continuous defoaming device and method Download PDF

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Publication number
CN109731371A
CN109731371A CN201910090678.6A CN201910090678A CN109731371A CN 109731371 A CN109731371 A CN 109731371A CN 201910090678 A CN201910090678 A CN 201910090678A CN 109731371 A CN109731371 A CN 109731371A
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umbrella
round
deaeration
spinning solution
level
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CN109731371B (en
Inventor
史红军
赵铎
张文广
潘强
郑淑昀
闫晓东
李晓峰
陈聚良
陈桂昌
欧玲
魏建毅
赵辉
孙浩杰
董菲菲
梁海军
罗亚利
晋卫国
袁中良
冯立伟
尹胜利
郑应山
屈建海
胡忠朴
陈聪
段文蕊
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HENAN SHENMA NYLON CHEMICAL CO Ltd
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HENAN SHENMA NYLON CHEMICAL CO Ltd
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Abstract

A kind of high viscosity spinning solution continuous defoaming device and method, described device includes Debubbling tank, first pipe is connected at the feed inlet of Debubbling tank, first pipe is equipped with the first metering pump, discharge outlet is connected with second pipe, second pipe is equipped with the second metering pump, the Debubbling tank includes the first round can body being arranged from top to bottom, tapered transitional and the second round can body, first round can body is connected by tapered transitional and the second round can body, the top of first round can body is equipped with end socket, end socket is equipped with feed inlet, tank deck peep hole and vacuum orifice, the bottom of second round can body is equipped with discharge pipe, the lower part of discharge pipe is equipped with discharge port, the top of first round can body is equipped with agitating shaft, the agitating shaft extends downwardly and protrudes into the bottom of the second round can body, level-one deaeration umbrella body and the double-deck opposed umbrella are equipped with positioned at the intracorporal agitating shaft of the first round can Shape thin plate is located at the intracorporal agitating shaft of the second round can and is equipped with biconial ribbon.

Description

A kind of high viscosity spinning solution continuous defoaming device and method
Technical field
The invention belongs to high viscosity liquid spinning fields, and in particular to a kind of high viscosity spinning solution continuous defoaming device and side Method.
Background technique
High viscosity fluid (such as production carbon fiber, Fanglun l414), the viscosity of spinning solution is up to 200~500PaS, High viscosity spinning solution deaeration technology is most important in fiber production process, and bubble removing, which is not thorough, will cause head and lousiness etc. It anomaly exists, while spinning solution long-time deaeration is easy degradation, directly affects tow products performance and appearance.High viscosity is spun Silk liquid defoaming device is more demanding, and the vacuum standing and defoaming of existing use is in the form of a single, because spinning fluid viscosity is excessive, makes bubble Under vacuum conditions, liquid level or more is risen to by bubble natural buoyancy, speed and its slowly, efficiency is very low.
Some defoaming devices improved based on the above issues, as patent CN101791493B discloses a kind of high viscosity The device for continuously and rapidly defoaming of fluid, kettle is interior to be arranged umbrella shape part, and there is adjustable slot-fed mouth in top, makes to enter different glue The fluid of degree and flow can form the continuous film for pressing thickness on umbrella shape part, realize the rapidly defoaming of high quality.But it neglects It is uniformly mixed problem depending on feed fluid, influences postorder properties of product.
If patent CN101797449B discloses combined vacuum defoaming device, vacuum double thin plate, biconial spiral shell are used Band stirring and deaeration umbrella combine deaeration mode, although improving deaeration effect, the fluid viscosity and liquid level of this equipment are necessary Strictly in control a certain range, residence time of the spinning solution in equipment could be controlled, effectively to prevent degrading;In addition exist Under vacuum state, the turbulent property of helical screw agitator end, bubble can be brought into spinning solution again in whipping process, cause to take off Steeping efficiency reduces.
As patent CN104328512B disclose it is a kind of using integral type dissolution defoaming device prepare aramid fiber spinning solution Method and system, spinning solution enter settling tank vacuum standing, remove the volatile component of remaining, and it is molten to form qualified aramid fiber spinning Liquid.But single vacuum standing and defoaming is used, settling tank is vacuumized, and kept for the air pressure regular hour, is bubble in pressure difference Liquid level or more is risen under effect, the bubbles burst waiting time is too long, is unable to continuous defoaming, and efficiency is too low.
Summary of the invention
The purpose of the present invention is to provide a kind of high viscosity spinning solution continuous defoaming device and methods.
Based on above-mentioned purpose, the present invention is adopted the following technical scheme that:
A kind of high viscosity spinning solution continuous defoaming device, including Debubbling tank, are connected with first pipe at the feed inlet of Debubbling tank, and first Pipeline is equipped with the first metering pump, and discharge outlet is connected with second pipe, and second pipe is equipped with the second metering pump, the Debubbling tank Including the first round can body, tapered transitional and the second round can body being arranged from top to bottom, the first round can body passes through tapered transitional It is connected with the second round can body, the top of the first round can body is equipped with end socket, and end socket is equipped with feed inlet, tank deck peep hole and vacuumizes Mouthful, the bottom of the second round can body is equipped with discharge pipe, and the lower part of discharge pipe is equipped with discharge port, and the top of the first round can body is equipped with Agitating shaft, the agitating shaft extend downwardly and protrude into the bottom of the second round can body, set on the intracorporal agitating shaft of the first round can There are level-one deaeration umbrella body and the double-deck opposed umbrella thin plate, is located at the intracorporal agitating shaft of the second round can and is equipped with biconial ribbon, institute It states and is equipped with feed pipe in the first round can body corresponding to feed inlet, the bottom of feed pipe is equipped with flat beak shape import, and flat mouth Shape import is close to the top of level-one deaeration umbrella body.
Further, in the opposed umbrella thin plate of the bilayer, the osculum of two umbrella thin plates is opposite to be installed, upper layer umbrella thin plate Osculum diameter be greater than the osculum diameter of lower layer's umbrella thin plate, the liquid for keeping upper layer umbrella thin plate dirty drops onto lower layer's umbrella The surface of thin plate, the big mouth diameter of level-one deaeration umbrella body are less than the big mouth diameter of upper layer umbrella thin plate, and upper layer umbrella thin plate is under Big mouth diametral distance first circle 5 ~ 20mm of inner tank wall of layer umbrella thin plate.
Further, flat beak shape import is at the 1/3 of level-one deaeration umbrella body bus, the first round can body, tapered transitional, Second round can body and discharge pipe are integrally formed, and the shell of the first round can body, tapered transitional and the second round can body is bilayer Structure is heated or cooled shell to be passed through medium water, and the lower part of the second round can body is equipped with water inlet, the first round can body Top be equipped with water outlet.
Further, stirring motor mounting hole, pressure gauge mounting hole and vacuum meter mounting hole, institute are additionally provided on the end socket The angle for stating level-one deaeration umbrella body, the double-deck opposed umbrella thin plate median generatrix and agitating shaft is 60 ~ 80 °, and preferably 70 o keep spinning molten Drop, which is fallen in, forms uniform film above umbrella shape thin plate, improve deaeration effect.
Further, end socket is connected by closure stud and the first round can body, and the first round can body is seen equipped with tank body Examine hole, 1.5 ~ 2.5m of the discharge nozzle road length, to prevent under vacuum conditions, biconial ribbon stirs the turbulent property of end and drops Low deaeration efficiency influences to realize continuous defoaming and discharging.The shell of the second round can body is equipped with transparent observation window of liquid level, thoroughly Inner wall corresponding to bright observation window of liquid level is equipped with liquidometer.
The upper surface of the lower surface of the level-one deaeration umbrella body, the lower surface of upper layer umbrella thin plate and lower layer's umbrella thin plate It is equipped with connecting rod, level-one deaeration umbrella body, upper layer umbrella thin plate and lower layer's umbrella thin plate are fixed by the connecting rod and are stirring On axis.
The method for carrying out continuous defoaming using above-mentioned high viscosity spinning solution continuous defoaming device, includes the following steps:
(1) high viscosity spinning solution is entered in defoaming device under the push of the first metering pump by flat beak shape import, makes spinning solution It is uniformly dropped in level-one deaeration umbrella body, completes the processing of deaeration for the first time;
(2) spinning solution in level-one deaeration umbrella body is dropped onto, under gravity, viscosity and the collective effect of relative rotation, is then existed Film is formed on the umbrella cover of level-one deaeration umbrella body, spinning solution obtains vacuum film deaeration for the first time, completes second of deaeration processing;
(3) under the effect of gravity, the spinning solution after second of deaeration freely drops on the double-deck opposed umbrella thin plate, upper layer umbrella Thin plate and lower layer's umbrella thin plate are oppositely arranged and it constitutes second level deaeration umbrella body and three-level deaeration umbrella body, into second level deaeration umbrella body On spinning solution dropped onto out of second level deaeration umbrella body in three-level deaeration umbrella body again, and diffuseed to form film-form outward along umbrella cover Fluid layer, complete third and fourth secondary deaeration processing;
(4) spinning solution is after the double-deck opposed umbrella thin plate, and along the tapered transitional that tank skin is flowed into lower part, agitating shaft is driven The stirring of biconial ribbon and rotation, make spinning solution while radial motion, and axial advancing movement accelerates, and are formed in whipping process Spherical bubble floating to liquid surface and rupture, or bubble takes near liquid level under stirring, acts on through negative pressure of vacuum Lower bubble is expanded rapidly, is ruptured, and by being stirred under vacuum deaeration processing, completes the 5th deaeration of spinning solution;
(5) spinning solution after deaeration is transferred out through discharge pipe, discharge port and through the second metering pump.
Further, the intracorporal spinning solution of tank is heated by inlet and outlet, the temperature range of heating is 70o~90o.
Further, vacuum gauge pressure control is in -0.08 MPa~-0.095MPa, preferably -0.095 MPa.
Further, the mixing speed of the agitating shaft is less than or equal to 20rpm, preferably 10 rpm, excessively high to prevent revolving speed, makes It is not thorough at deaeration effect.
Further, the residence time of spinning solution in the device is 0.5-1 hours, preferably 0.5 hour, is sent out to prevent spinning solution Raw degradation.
The initial stage spinning solution that the present invention prepares double screw extruder is under vacuum conditions 60 by three-level inclination angle ~80o deaeration umbrella body structure forms uniform thickness film liquid, is slipped to tank bottom along tank skin, then passes through the first metering pump control the The liquid level of one round can body is between 60%~80%, and liquid level is excessively high, and the residence time is too long in tank, and material is caused to degrade, liquid level mistake Low metering pump is easy gasification, and production cannot be continuous, and most serious can stop, and material belongs to molten polymer, and parking post-processing is opened again Vehicle, material maintain equilibrium state to take a long time, and deaeration tank body lower part is arranged again is about 2 meters of discharge pipe, and exporting is the Two metering pumps are delivered to filter for installation impurity screening, for the use of postorder electrospinning unit.The present invention in same defoaming device and Under conditions of same vacuum environment, multiple deaeration is carried out to spinning solution, the deaeration effect of spinning solution is effectively increased, more improves The product quality of tow.
Detailed description of the invention
Fig. 1 is the appearance diagram of defoaming device of the present invention;
Fig. 2 is the internal structure schematic diagram of Debubbling tank of the present invention;
Fig. 3 is the structural schematic diagram of the first round can body, tapered transitional and the second round can body
Symbol description in figure: the revolving speed of n expression agitating shaft.In figure, 1- end socket;2- the first round can body;3- tapered transitional;4- into Material mouth;5- stirring motor mounting hole;6- tank deck peep hole;7- vacuum orifice;8- pressure gauge mounting hole;9- agitating shaft;10- level-one Deaeration umbrella body;The double-deck opposed umbrella thin plate of 11-;12- biconial ribbon;13- discharge port;14- flat beak shape import;15- tank body is seen Examine hole;16- liquidometer;17- water inlet;18- water outlet;19- vacuum meter mounting hole;20- closure stud;21- the second round can body; 22- connecting rod;The transparent observation window of liquid level of 23-;The first metering pump of 24-;The second metering pump of 25-.
Specific embodiment
Invention is further described in detail with attached drawing combined with specific embodiments below, but the present invention is not limited to specific real Apply example.
A kind of high viscosity spinning solution continuous defoaming device, as shown in Figures 1 to 3, including Debubbling tank, at the feed inlet of Debubbling tank It is connected with first pipe, first pipe is equipped with the first metering pump 24, and discharge outlet is connected with second pipe, and second pipe is equipped with the Two metering pumps 25, the Debubbling tank include the first round can body 2, tapered transitional 3 and the second round can body 21 being arranged from top to bottom, First round can body 2 is connected by tapered transitional 3 and the second round can body 21, and the top of the first round can body 2 is equipped with end socket 1, end socket 1 It is equipped with feed inlet 4, tank deck peep hole 6 and vacuum orifice 7, the bottom of the second round can body 21 is equipped with discharge pipe, discharge pipe Lower part be equipped with discharge port 13, the top of the first round can body 2 is equipped with agitating shaft 9, and the agitating shaft 9 extends downwardly and protrudes into second The bottom of round can body 21, the agitating shaft 9 in the first round can body 2 is equipped with level-one deaeration umbrella body 10 and the double-deck opposed umbrella is thin Plate 11, the agitating shaft 9 in the second round can body 21 are equipped with biconial ribbon 12, the first circle corresponding to the feed inlet 4 Feed pipe is equipped in tank body 2, the bottom of feed pipe is equipped with flat beak shape import 14, and flat beak shape import 14 is close to level-one deaeration At the 1/3 of 10 bus of umbrella body.
Further, in the opposed umbrella thin plate 11 of the bilayer, the osculum of two umbrella thin plates is opposite to be installed, and upper layer umbrella is thin The osculum diameter of plate is greater than the osculum diameter of lower layer's umbrella thin plate, and the liquid for keeping upper layer umbrella thin plate dirty drops onto lower layer's umbrella The surface of shape thin plate, the bottom of level-one deaeration umbrella body 10 and the top of upper layer umbrella thin plate share a face, lower layer's umbrella thin plate Big mouth diametral distance first circle 5 ~ 20mm of inner tank wall.
Further, flat beak shape import 14 is at the 1/3 of 10 bus of level-one deaeration umbrella body, the first round can body 2, taper mistake Cross portion 3, the second round can body 21 and discharge pipe are integrally formed, the first round can body 2, tapered transitional 3 and the second round can body 21 Shell is double-layer structure, and the lower part of the second round can body 21 is equipped with water inlet 17, and the top of the first round can body 2 is equipped with water outlet 18。
Further, stirring motor mounting hole 5, pressure gauge mounting hole 8 and vacuum meter mounting hole are additionally provided on the end socket 1 19, the angle of the level-one deaeration umbrella body 10, double-deck opposed 11 median generatrix of umbrella thin plate and agitating shaft is 60 ~ 80 °, preferably 70 O is dropped in spinning solution above umbrella shape thin plate and forms uniform film, improves deaeration effect.
Further, end socket 1 is connected by closure stud 20 and the first round can body 2, and the first round can body 2 is equipped with tank Body peep hole 15, the discharge pipe length L about 2m, to prevent under vacuum conditions, the turbulent flow that biconial ribbon stirs end is special Property and reduce deaeration efficiency, influence to realize continuous defoaming and discharging.The shell of the second round can body 21 is equipped with transparent liquid level Observation window 23, inner wall corresponding to transparent observation window of liquid level 23 are equipped with liquidometer 16.
The upper table of the lower surface of the level-one deaeration umbrella body 10, the lower surface of upper layer umbrella thin plate and lower layer's umbrella thin plate Face is equipped with connecting rod 22, and it is solid that level-one deaeration umbrella body 10, upper layer umbrella thin plate and lower layer's umbrella thin plate pass through connecting rod 22 It is scheduled on agitating shaft 9.First round can body, 2 size: high 710mm, diameter 1000mm;3 size of tapered transitional: high 200mm, top Portion diameter 1000mm, base diameter 600mm;Third round can body size: high 950mm, diameter 600mm, discharge nozzle: diameter 200mm is about 2m.
Embodiment 1
The method for carrying out continuous defoaming using above-mentioned high viscosity spinning solution continuous defoaming device, includes the following steps:
(1) vacuum meter mounting hole 19 sets up vacuum meter, and pressure gauge mounting hole 8 installs pressure gauge, and stirring motor mounting hole 5 is installed For upper stirring motor to drive and control the revolving speed of agitating shaft 9, opening water inlet 17 and water outlet 18, temperature are set as 85 DEG C; By vacuum orifice 7 to being vacuumized in tank body, observes and make vacuum gauge pressure in -0.095MPa, start agitating shaft 9 and adjust Revolving speed is 10 rpm;
(2) material after proportion is qualified is prepared with bladdery initial stage spinning solution through double screw extruder in the first metering pump 24 Push under pass through feed inlet 4, flat beak shape import 14 enter defoaming device in, so that spinning solution is uniformly dropped in level-one deaeration umbrella body On 10, the processing of deaeration for the first time is completed;
(3) spinning solution in level-one deaeration umbrella body 10 is dropped onto, under gravity, viscosity and the collective effect of relative rotation, then Film is formed on the umbrella cover of level-one deaeration umbrella body 10, spinning solution obtains vacuum film deaeration for the first time, completes second of deaeration Processing;
(4) under the effect of gravity, the spinning solution after second of deaeration freely drops on the double-deck opposed umbrella thin plate 11, upper layer umbrella Shape thin plate and lower layer's umbrella thin plate are oppositely arranged and it constitutes second level deaeration umbrella body and three-level deaeration umbrella body, into second level deaeration umbrella Spinning solution on body drops onto three-level deaeration umbrella body out of second level deaeration umbrella body again, and has diffuseed to form film outward along umbrella cover The fluid layer of shape completes third and fourth secondary deaeration processing;
(5) spinning solution is after the double-deck opposed umbrella thin plate 11, along the tapered transitional 3 that tank skin is flowed into lower part, agitating shaft The stirring of biconial ribbon 12 and rotation are driven, makes spinning solution while radial motion, axial advancing movement accelerates, whipping process The spherical bubble floating of middle formation to liquid surface and ruptures, or bubble takes near liquid level under stirring, negative through vacuum Pressure acts on lower bubble and expands rapidly, ruptures, and by being stirred under vacuum deaeration processing, completes the 5th deaeration of spinning solution;
(6) it is checked successively by tank body peep hole 15 by three-level deaeration umbrella body and along the uniform of umbrella shape face edge flowing film Property, the liquid level for observing the second round can body 21 in Debubbling tank is shown between 40%~60%, opens bottom discharge port 13, start second Metering pump 25 is delivered to filter for installation impurity screening, and for the use of postorder electrospinning unit, which about needs 0.5 hour.
Use viscosity 5.2dL/g after the deaeration used the present invention can obtain electrospinning unit, intensity for 20.5CN/dtex and Modulus is the qualified spinning solution of 84.1Gpa.The residence time of strict control spinning solution of the present invention in the device, guarantee in spinning solution While deaeration can also continuous pulp discharge, efficiently solve influence of the bubble to tow quality in high viscosity spinning solution, greatly improve Spinning solution continuous defoaming efficiency.
Embodiment 2
The method of continuous defoaming and the difference of embodiment 1 are carried out using above-mentioned high viscosity spinning solution continuous defoaming device It is step (6), the liquid level for observing the second round can body 21 in Debubbling tank is shown between 90%~100%, opens bottom discharge port 13, the second metering pump 25 of starting is delivered to filter for installation impurity screening, and for the use of postorder electrospinning unit, which about needs 1 hour.
Using is 20.0CN/dtex for 5.1dL/g, intensity the present invention can obtain viscosity after deaeration and modulus is The qualified spinning solution of 80.1Gpa, but in postorder electrospinning unit since material has slight degradation situation, it influences to draw drawing effect. The present invention claims strict control spinning solution residence time in the device and temperature variations with the comparison of embodiment 1 discovery, Spinning solution continuous defoaming efficiency can be improved.
Embodiment 3
The method of continuous defoaming and the difference of embodiment 1 are carried out using above-mentioned high viscosity spinning solution continuous defoaming device It is step (6), observes apical position of the liquid level in tapered transitional 3 of Debubbling tank, opens bottom discharge port 13, starting second Metering pump 25 is delivered to filter for installation impurity screening, and for the use of postorder electrospinning unit, which about needs 1.5 hours.
Using is 20.0CN/dtex for 5.1dL/g, intensity the present invention can obtain viscosity after deaeration and modulus is The qualified spinning solution of 77.7Gpa, but in postorder electrospinning unit since material has degradation, influence traction stretching and performance.With The present invention claims strict control spinning solution residence time in the device and temperature variations, ability for the comparison of embodiment 1 discovery Improve spinning solution continuous defoaming efficiency.
Embodiment 4
The method of continuous defoaming and the difference of embodiment 1 are carried out using above-mentioned high viscosity spinning solution continuous defoaming device It is step (6), observes lower end position of the liquid level in level-one deaeration umbrella body 10 of Debubbling tank, opens bottom discharge port 13, starting Second metering pump 25 is delivered to filter for installation impurity screening, and for the use of postorder electrospinning unit, which about needs 2.0 small When.
Using is 19.1CN/dtex for 5.0dL/g, intensity the present invention can obtain viscosity after deaeration and modulus is The qualified spinning solution of 70.6Gpa, but drawing-off and performance are directly affected since material degradation is serious in postorder electrospinning unit.And reality Applying the comparison of example 1 discovery, the present invention claims strict control spinning solution residence time in the device and temperature variations, Cai Nengti High spinning liquid continuous defoaming efficiency.
The performance of spinning after 1 conventional method of table and each embodiment deaeration
As shown in Table 1, each parameter is optimum value in embodiment 1, and the performance of the spinning solution obtained at this time is best, and the present invention needs The liquid level of strict control spinning solution.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as Protection scope of the present invention.

Claims (10)

1. a kind of high viscosity spinning solution continuous defoaming device, which is characterized in that including Debubbling tank, be connected at the feed inlet of Debubbling tank First pipe, first pipe are equipped with the first metering pump, and discharge outlet is connected with second pipe, and second pipe is equipped with the second metering Pump, the Debubbling tank include the first round can body, tapered transitional and the second round can body being arranged from top to bottom, and the first round can body is logical Tapered transitional and the connection of the second round can body are crossed, the top of the first round can body is equipped with end socket, and end socket is equipped with feed inlet, tank deck is seen Hole and vacuum orifice are examined, the bottom of the second round can body is equipped with discharge pipe, and the lower part of discharge pipe is equipped with discharge port, the first round can The top of body is equipped with agitating shaft, and the agitating shaft extends downwardly and protrude into the bottom of the second round can body, is located in the first round can body Agitating shaft be equipped with level-one deaeration umbrella body and the double-deck opposed umbrella thin plate, be located at the intracorporal agitating shaft of the second round can be equipped with it is double Taper ribbon is equipped with feed pipe in the first round can body corresponding to the feed inlet, and the bottom of feed pipe is equipped with flat beak shape Import, and flat beak shape import is close to the top of level-one deaeration umbrella body.
2. high viscosity spinning solution continuous defoaming device according to claim 1, which is characterized in that the opposed umbrella of bilayer is thin In plate, the osculum of two umbrella thin plates is opposite to be installed, and the osculum that the osculum diameter of upper layer umbrella thin plate is greater than lower layer's umbrella thin plate is straight Diameter, the liquid for keeping upper layer umbrella thin plate dirty drop onto the surface of lower layer's umbrella thin plate, the big mouth diameter of level-one deaeration umbrella body Less than the big mouth diameter of upper layer umbrella thin plate, big the first round can of mouth diametral distance body of upper layer umbrella thin plate and lower layer's umbrella thin plate 5 ~ 20mm of inner wall.
3. high viscosity spinning solution continuous defoaming device according to claim 1, which is characterized in that flat beak shape import is close to level-one At the 1/3 of deaeration umbrella body bus, the first round can body, tapered transitional, the second round can body and discharge pipe are integrally formed, the first circle Tank body, tapered transitional, the second round can body and discharge pipe shell be double-layer structure to be passed through medium water to shell into Row is heated or cooled, and the outer wall of discharge pipe lower part is equipped with water inlet, and the outer wall on the first round can body top is equipped with water outlet.
4. high viscosity spinning solution continuous defoaming device according to claim 1, which is characterized in that be additionally provided with and stir on the end socket Mix motor installing hole, pressure gauge mounting hole and vacuum meter mounting hole, mother in the level-one deaeration umbrella body, the double-deck opposed umbrella thin plate The angle of line and agitating shaft is 60 ~ 80 °.
5. high viscosity spinning solution continuous defoaming device according to claim 1, which is characterized in that end socket by closure stud and First round can body connection, the first round can body be equipped with tank body peep hole, the discharge nozzle road length 1.5-2.5m, described second The shell of round can body is equipped with transparent observation window of liquid level, and inner wall corresponding to transparent observation window of liquid level is equipped with liquidometer.
6. high viscosity spinning solution continuous defoaming device according to claim 2, which is characterized in that the level-one deaeration umbrella body The upper surface of lower surface, the lower surface of upper layer umbrella thin plate and lower layer's umbrella thin plate is equipped with connecting rod, level-one deaeration umbrella body, Upper layer umbrella thin plate and lower layer's umbrella thin plate are fixed by the connecting rod on agitating shaft.
7. the method for carrying out continuous defoaming using any high viscosity spinning solution continuous defoaming device of claim 1 to 6, packet Include following steps:
(1) high viscosity spinning solution is entered in defoaming device under the push of the first metering pump by flat beak shape import, makes spinning solution It is uniformly dropped in level-one deaeration umbrella body, completes the processing of deaeration for the first time;
(2) spinning solution in level-one deaeration umbrella body is dropped onto, under gravity, viscosity and the collective effect of relative rotation, is then existed Film is formed on the umbrella cover of level-one deaeration umbrella body, spinning solution obtains vacuum film deaeration for the first time, completes second of deaeration processing;
(3) under the effect of gravity, the spinning solution after second of deaeration freely drops on the double-deck opposed umbrella thin plate, upper layer umbrella Thin plate and lower layer's umbrella thin plate are oppositely arranged and it constitutes second level deaeration umbrella body and three-level deaeration umbrella body, into second level deaeration umbrella body On spinning solution dropped onto out of second level deaeration umbrella body in three-level deaeration umbrella body again, and diffuseed to form film-form outward along umbrella cover Fluid layer, complete third and fourth secondary deaeration processing;
(4) spinning solution is after the double-deck opposed umbrella thin plate, and along the tapered transitional that tank skin is flowed into lower part, agitating shaft is driven The stirring of biconial ribbon and rotation, make spinning solution while radial motion, and axial advancing movement accelerates, and are formed in whipping process Spherical bubble floating to liquid surface and rupture, or bubble takes near liquid level under stirring, acts on through negative pressure of vacuum Lower bubble is expanded rapidly, is ruptured, and by being stirred under vacuum deaeration processing, completes the 5th deaeration of spinning solution;
(5) spinning solution after deaeration is transferred out through discharge pipe, discharge port and through the second metering pump.
8. the continuous defoaming method of high viscosity spinning solution according to claim 7, which is characterized in that pass through water inlet and water outlet Mouth heats the intracorporal spinning solution of tank, and the temperature range of heating is 70o~90o.
9. the continuous defoaming method of high viscosity spinning solution according to claim 7, which is characterized in that vacuum gauge pressure control It is less than or equal to 20rpm in the mixing speed of -0.08 MPa~-0.095MPa, the agitating shaft.
10. the continuous defoaming method of high viscosity spinning solution according to claim 7, which is characterized in that spinning solution is in the device Residence time be 0.5-1 hours.
CN201910090678.6A 2019-01-16 2019-01-30 Continuous defoaming device and method for high-viscosity spinning solution Active CN109731371B (en)

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