CN107829155A - A kind of Mixing of Polymer Melt device - Google Patents
A kind of Mixing of Polymer Melt device Download PDFInfo
- Publication number
- CN107829155A CN107829155A CN201711069076.XA CN201711069076A CN107829155A CN 107829155 A CN107829155 A CN 107829155A CN 201711069076 A CN201711069076 A CN 201711069076A CN 107829155 A CN107829155 A CN 107829155A
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- China
- Prior art keywords
- mixing
- mixing column
- polymer melt
- agitating shaft
- circular arc
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Classifications
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- 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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
A kind of Mixing of Polymer Melt device, including mixing column and agitating shaft, paddle and propeller are provided with agitating shaft, concavo-convex anti-adhesion structure is both provided with the surface of the part being in contact with molten polymer in a mixer, it is possible to achieve anti-adhesive attraction of the polymer melt in filament spinning component；The prevent adhesion mechanism of action of mechanism of the bumps is：Concavo-convex anti-adhesion structure includes sunk part and bossing, bossing is higher by parts surface setting, directly contacting between highly viscous polymer melt and parts surface is reduced using supporting role between points, and gas suspension effect is formed in the presence of HTHP melt, plays and is prevented adhesion from separate type.
Description
Technical field
The present invention relates to polymer melting technical field, and in particular to a kind of Mixing of Polymer Melt device.
Background technology
The BP of 1845 is come from the earliest record of melt spinning process.Nineteen thirty-nine melt spinning is as manufacture nylon
The production technology of 66 fibers obtains industrial applications.Melt spinning basic process include material melts, from spinneret micropore extrusion,
Melt stream cooling and solidifying shaping.Manufactured long filament can be used bobbin coiling and molding or carry out other processing.In melt spinning
During, polymer feeding extruder, it is tired to be sent to metering further along after screw rod transmission, plasticizing, melting:Metering is poly- to pass through essence
Really metering ensures that the melt of polymer can be flowed into stable and uniform in critical component filament spinning component, the melt in filament spinning component
By the filtering of filter medium, eliminating to be provided with porous spinneret by high pressure press-in after impurity and bubble turns into thread；Carefully
Stream is while cooling (quenching) quick by horizontal blowing, because the effect of following wireline reel also produces super drawing so that diameter
Attenuate；As-spun fibre is wound into certain package.
Filament spinning component is mainly filter layer, the distribution being made up of upper strata excessively stream lid, wire netting and filter sand under normal circumstances
Plate and porous spinneret are formed.Spinning melt is lain prone type after top-level entries flow into filament spinning component via the back taper minister in ancient times in sand chamber
Excessively stream lid diffusely into component inner chamber in, filtration combination layer is ingeniously entered in the presence of upper stressor layer.Filter layer generally has
Multiple filtration net and METALLIC FILTRATION SAND composition.The a piece of coarse net for not luring steel wire to weave into often is laid in the superiors of filter layer, is turned into
Cover net or cover net, it is therefore an objective to which the debris for stopping bulk and the layer of sand for preventing bottom move.When being filtered using filter sand, press in principle
Grit size is carefully sequentially arranged by thick.When placing multistorey strainer mesh, and by the descending principle of mesh size.In filtering group
The bottom for closing layer has laid one layer of supporting network, and it is typically to be made up of a piece of or two panels coarse net, it is therefore an objective to supports upper strata mistake
Filtering layer, increase longitudinal rigidity, have the function that not to be depressed, it can also prevent from draining to the work of spinneret orifice under broken filter sand sometimes
With.Melt after fine filtering is flowed into the hole of distribution plate.On the one hand the effect of distribution plate is to play support upper level filter
Layer, is on the other hand before polymer melt is assigned into spinneret plate as homogeneously as possible so that the uniform flow per hole, is also replaced
Spinneret has shared the melt pressure of part so that spinning plate surface is unlikely to superpressure and deformed.Polymer melt is squeezed into
After the guide hole of spinneret, micropore gives the certain shape of melt and is extruded as strand, finishes to dazzle body like this in spinning group
The design of the filament spinning component of part internal flow need to mainly determine its structure snd size.Wherein component external structure snd size are main
The problems such as needing to consider the intensity and corrosion resistance of itself, the problem of also relating to installing/dismounting and sealing.Filament spinning component
Inner member just really carries main spinning function, it should how to select filtration combination element, hybrid element, distribution member
With spinneret panel element etc., it is necessary to it is comprehensive to go fully to calculate from multi-angles such as hydrodynamics, melt rheology and heat conductions
And consideration.Certainly the problem of inner sealing of each element and strong rigidity can not be ignored while design.Melt spinning is in height
The lower progress of temperature, if polymer melt is chronically at high humidity state, it may occur that degraded influences the quality of precursor, and institute W is being designed
During component internal passage, melt should be made to be uniformly distributed in each micropore of spinneret as far as possible, channel resistance should be equal, in component
There can not be dead angle, in case melt residence time is long and decomposes.It should process smooth with king's part surface of melt contacts,
Material can not be made to be detained due to wall surface resistance.Fluid motion uniformity mainly includes fluid motion speed, pressure in filament spinning components
The contents such as power, residence time, discharging distribution.Preferable filament spinning component should be able to ensure that above-mentioned parameter is all identical simultaneously, sample presentation
It just can ensure that polymer melt is evenly distributed in each spinneret orifice of spinneret with identical matter, it is equal finally to spin out structural behaviour
Even high quality fibers.However, the factor for influenceing flow field uniformity in filament spinning component is numerous, wherein mainly having material properties, work
Skill condition, device structure parameter etc..When the above two control identical, device structure is its most important influence factor again.
The flow behavior of polymer melt is more complex compared with for small molecule solution.Under external force, melt is not
Irreversible viscous yielding is only shown, but also shows reversible elastic deformation.Because the flowing of polymer is not
It is simple Relative sliding between macromolecular chain, but the overall result of moving cell transition successively.Under external force, macromolecule
Chain is inevitably stretched along external force direction, removes external force, and macromolecular chain will be spontaneously rolled up again.This conformation becomes
Elastically-deformable development and Recovery Process caused by changing are relaxation, and the process depends on polymer molecular weight, outer masterpiece
With time, temperature etc..In molding process, the outward appearance of elastic deformation and its subsequent lax pair fiber, dimensional stability,
Internal stress etc. has substantial connection.
High polymer molten viscosity is cut flowing and is mainly characterized in that:It is very high to cut viscosity；Viscosity strong depend-ence trimming speed is cut, absolutely
Most of high polymer moltens belong to pseudoplastic fluid；Velocity flow profile of the pseudoplastic behavior high polymer molten in pipe is not parabolically
It is linear, and plunger flow is close to, velocity gradient concentrates on near-wall, is moved that may have tube wall to slide in some cases,
Molecular-weight gradation effect is there may also be in flowing, low molecular weight fraction is more than pipe axle in near-wall.
It is not constant temperature process in actual production process, and is unstable state, but above-mentioned " spinnability " is theoretical, it is right
The forming process of chemical fibre still has preferably reference and directive significance, and the principal element drawn from " spinnability " in theoretical is all
It is the factor for controlling spinning to be smoothed out.Such as be viscosity and surface tension to capillary mechanism major influence factors, to cohesive energy
The principal element that failure mechanism influences is deformation speed and viscoplasticity size etc..Understanding the spinnability principle of melt contributes to us
When adjusting spinning technique, optimal conditions are targetedly selected, so as to avoid occurring wild effect in spinning.Change and spin
The rheological property of silk Wang Yi parameters and raw material may cause the variable element scope for stablizing spinning fully to increase, convenient and technique
Adjustment.
Because the high temperature polymer melt of melting needs to shift and flow in filament spinning component, therefore, high-temperature fusant is with spinning
Silk component quality inspection inevitably there are contact, adhesion on the inwall of filament spinning component also just inevitably be present,
Although the smooth enough of its inwall processing can largely be reduced when preparing filament spinning component at present
Attachment of polymers caused by due to inner wall surface problem, still, due to the limitation of machining accuracy and process technology, it is difficult to accomplish
Inwall is completely smooth, and still can so produce the adhesion of polymer；Also have in the prior art in spinning process in polymer and
The scheme of lubricant is added between the inwall of filament spinning component, can so play certain anti-adhesiving effect, but these are added to
The lubricant come will certainly be entered in polymer, and then the property of polymer and the generation of the property of follow-up spinning are unexpected
Influence, it is and worthless.Due to the adhesion of the polymer in spinning process, after the production schedule of a batch is not completed
It is required for thoroughly cleaning filament spinning component, the cleaning to filament spinning component can cause time and cost greatly to consume, and
And it is difficult to be cleaned that can also there are some dead angles, follow-up production can be adversely affected again.Therefore, need badly open
The anti-adhesion of various pieces or anti-blocking techniques in the filament spinning component that to send out a kind of new, the shortcomings that to overcome in the prior art.
The content of the invention
Above-mentioned technical problem be present for prior art, present invention offer is a kind of effectively to reduce the new of attachment of polymers
Type Mixing of Polymer Melt device.
To achieve the above object, the present invention provides following technical scheme：
A kind of Mixing of Polymer Melt device, including mixing column and agitating shaft, the mixing column have the shell of multi-layer compound structure, mix
The side bottom for closing tower is provided with several temperature sensors；The top of mixing column is in circular arc, at the top of the circular arc of mixing column
Side be additionally provided with monomer pumping device access port, the top at the top of mixing column circular arc is provided with what is passed through for agitating shaft
Through hole, one end of agitating shaft are deep into mixing column, and the other end is connected with motor；The bottom of mixing column is also in circular arc, mixing
The side of the circular arc-shaped bottom portion of tower is provided with detection material taking mouth, and the top of mixing column circular arc-shaped bottom portion is provided with discharging opening, gone out
Material mouth is connected with discharging pump and discharge nozzle；The bottom of agitating shaft inside mixing column is connected with propeller, below mixing column
Buffer table is provided with inwall, corresponds on agitating shaft at the height of the buffer table and is provided with some paddles, the paddle
Position higher than the location of propeller on agitating shaft；In mixing column, agitating shaft, propeller, paddle and polymer
Bumps are provided with the surface that melt is in contact to prevent adhesion mechanism；The concavo-convex anti-adhesion structure for it is equally distributed depression and it is convex
Rise.
Preferably, the depression in the concavo-convex anti-adhesion structure and raised spaced it is uniformly distributed；Raised surface area
For 0.5-2 square millimeters, the surface area of depression is 1-3 square millimeters.
Preferably, the raised surface area is 1 square millimeter, and the surface area of depression is 2 square millimeters.
Preferably, it is provided with heater in the mixing column.
Preferably, the heater is heating rod.
Beneficial effects of the present invention：
A kind of Mixing of Polymer Melt device, including mixing column and agitating shaft, paddle and propeller are provided with agitating shaft.With biography
Polymer mixer in the fused spinning assembling parts of system is compared, and has advantages below：Due in a mixer and melt polymerization
Concavo-convex anti-adhesion structure is both provided with the surface for the part that thing is in contact, it is possible to achieve polymer melt is in filament spinning component
Anti- adhesive attraction；The prevent adhesion mechanism of action of mechanism of the bumps is：Concavo-convex anti-adhesion structure includes sunk part and lug boss
Point, bossing is higher by parts surface setting, using supporting role between points reduce highly viscous polymer melt with
Direct contact between parts surface, and gas suspension effect is formed in the presence of HTHP melt, play from separation
Formula prevents adhesion；Sunk structure plays a part of accommodating levitation gas, is cooperated with bossing；Raised surface area is 0.5-
2 square millimeters, the surface area of depression is 1-3 square millimeters, it is preferable that raised surface area is 1 square millimeter, the surface of depression
Product is 2 square millimeters, and sunk part and lug boss branch point are connected to form the cellular protection grid of precision, by parts surface with
Polymer melt separates, and increases the effect to prevent adhesion.The area of bossing and sunk part is unsuitable excessive, if area mistake
Greatly, then good preventing adhesiving effect can not be played, the situation that itself and polymer melt are directly in contact with parts surface is without two；
Area both it is also unsuitable too small, if area is too small, it can not play estimated preventing adhesiving effect, and difficulty of processing
Also can be very big.Concavo-convex anti-adhesion structure can apply on these parts respectively when preparing the various pieces of filament spinning component, can
Carried out in the form of using the sark directly docile and obedient surface in part by the mechanism that prevented adhesion with bumps, car can also be used
The precision machined form of bed is carried out, and its specific processing method is conventional parts machining means of the prior art, herein
No longer describe.
The interface for connecting monomer pumping device is provided with mixing column, can be with external monomer pumping device so that poly-
Polymer melt in time detaches away monomer when mixing, avoids excessive monomer from being collected in mixing column, influences to polymerize
The effect and quality of thing mixture.It is additionally provided with detection material taking mouth on mixing column, the convenient feeding at any time during mixing
Detected to judge the effect of mixing, can so avoid opening blender when detection, convenient operation, and be not easy
Generation security incident.Buffer table is additionally provided with mixing column, buffer table from the mixing general material to come up of tower bottom to playing buffering
Effect, avoid producing excessively fierce collision with the new material that top charge door enters so that the effect of mixing is more slow
With it is uniform.
Brief description of the drawings
Fig. 1 is the structural scheme of mechanism of blender of the present invention.
Reference：
1 --- mixing column；
2 --- temperature sensor；
3 --- monomer pumping device access port；
4 --- agitating shaft；
5 --- motor；
6 --- detection material taking mouth；
7 --- discharging opening；
8 --- propeller；
9 --- buffer table；
11 --- charge door.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in detail.
Embodiment 1
A kind of Mixing of Polymer Melt device, including mixing column 1 and agitating shaft 4, the mixing column 1 have the outer of multi-layer compound structure
Shell, the side bottom of mixing column 1 are provided with several temperature sensors 2；The top of mixing column 1 is in circular arc, the circle of mixing column 1
Side at the top of arc is provided with monomer pumping device access port 3 and charge door 11, and the top at the top of the circular arc of mixing column 1 is set
The through hole passed through for agitating shaft is equipped with, one end of agitating shaft 4 is deep into mixing column 1, and the other end is connected with motor 5；Mixing column 1
Bottom be also in circular arc, the side of the circular arc-shaped bottom portion of mixing column 1 is provided with detection material taking mouth 6, at the circular arc bottom of mixing column 1
The top in portion is provided with discharging opening 7, and discharging opening 7 is connected with discharging pump and discharge nozzle；The bottom of agitating shaft 4 inside mixing column 1
End is connected with propeller 8, buffer table 9 is provided with the inwall of the lower section of mixing column 1, corresponding to the buffer table 9 on agitating shaft 4
Some paddles 10 are provided with height, the position of the paddle 10 is higher than the location of propeller on agitating shaft 48；Mixed
It is provided with conjunction tower on the surface being in contact with polymer melt of 1, agitating shaft 4, propeller 8, paddle 10 concavo-convex anti-sticking
Even mechanism；The concavo-convex anti-adhesion structure is equally distributed depression and projection.
Wherein, the depression in the concavo-convex anti-adhesion structure and raised spaced it is uniformly distributed；Raised surface area is
0.5-2 square millimeters, the surface area of depression is 1-3 square millimeters.Further, raised surface area is 1 square millimeter, depression
Surface area be 2 square millimeters.
Concavo-convex anti-adhesion structure is both provided with the surface of the part being in contact with molten polymer in a mixer, can
To realize anti-adhesive attraction of the polymer melt in filament spinning component；The prevent adhesion mechanism of action of mechanism of the bumps is：Bumps are anti-
Adhesion structure includes sunk part and bossing, and bossing is higher by parts surface setting, utilizes branch between points
Support effect reduces directly contacting between highly viscous polymer melt and parts surface, and in the effect of HTHP melt
Lower formation gas suspension effect, plays and is prevented adhesion from separate type；Sunk structure plays a part of accommodating levitation gas, with lug boss
Divide and cooperate；Raised surface area is 0.5-2 square millimeters, and the surface area of depression is 1-3 square millimeters, it is preferable that raised
Surface area be 1 square millimeter, the surface area of depression is 2 square millimeters, and sunk part and lug boss branch point are connected to form essence
Close cellular protection grid, parts surface and polymer melt are separated, increase the effect to prevent adhesion.Bossing and recessed
It is unsuitable excessive to fall into the area of part, if area is excessive, good preventing adhesiving effect can not be played, itself and polymer melt
Situation about being directly in contact with parts surface is without two；Area both it is also unsuitable too small, if area is too small, it can not rise
To estimated preventing adhesiving effect, and difficulty of processing also can be very big.Concavo-convex anti-adhesion structure can prepare each of filament spinning component
Apply on these parts respectively during individual part, can use the sark with the concavo-convex mechanism that prevents adhesion is directly docile and obedient in portion
The form on the surface of part is carried out, and can also be carried out in the form of precision lathe processing, its specific processing method is existing skill
Conventional parts machining means in art.
The interface for connecting monomer pumping device is provided with mixing column, can be with external monomer pumping device so that poly-
Polymer melt in time detaches away monomer when mixing, avoids excessive monomer from being collected in mixing column, influences to polymerize
The effect and quality of thing mixture.It is additionally provided with detection material taking mouth on mixing column, the convenient feeding at any time during mixing
Detected to judge the effect of mixing, can so avoid opening blender when detection, convenient operation, and be not easy
Generation security incident.Buffer table is additionally provided with mixing column, buffer table from the mixing general material to come up of tower bottom to playing buffering
Effect, avoid producing excessively fierce collision with the new material that top charge door enters so that the effect of mixing is more slow
With it is uniform.
In order to maintain the temperature of polymer melt, heater is provided with the mixing column, heater is heating rod.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of scope is protected, although being explained with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent substitution, without departing from the reality of technical solution of the present invention
Matter and scope.
Claims (5)
1. a kind of Mixing of Polymer Melt device, it is characterised in that including mixing column and agitating shaft, the mixing column has MULTILAYER COMPOSITE
The shell of structure, the side bottom of mixing column are provided with several temperature sensors；The top of mixing column is in circular arc, mixing column
Circular arc at the top of side be additionally provided with monomer pumping device access port, the top at the top of mixing column circular arc is provided with confession
The through hole that agitating shaft passes through, one end of agitating shaft are deep into mixing column, and the other end is connected with motor；The bottom of mixing column is also in
Circular arc, the side of the circular arc-shaped bottom portion of mixing column are provided with detection material taking mouth, are set on the top of mixing column circular arc-shaped bottom portion
There is discharging opening, discharging opening is connected with discharging pump and discharge nozzle；The bottom of agitating shaft inside mixing column is connected with propeller, mixes
Close and be provided with buffer table on the inwall below tower, correspond on agitating shaft at the height of the buffer table and be provided with some stirrings
Leaf, the position of the paddle is higher than the location of propeller on agitating shaft；In mixing column, agitating shaft, propeller, paddle
The surface being in contact with polymer melt on be provided with bumps and prevent adhesion mechanism；The concavo-convex anti-adhesion structure is to be uniformly distributed
Depression and projection.
2. Mixing of Polymer Melt device according to claim 1, it is characterised in that recessed in the concavo-convex anti-adhesion structure
Fall into and raised spaced be uniformly distributed；Raised surface area is 0.5-2 square millimeters, and the surface area of depression is 1-3 squares of milli
Rice.
3. Mixing of Polymer Melt device according to claim 2, it is characterised in that the raised surface area is 1 square
Millimeter, the surface area of depression is 2 square millimeters.
4. Mixing of Polymer Melt device according to claim 3, it is characterised in that heating dress is provided with the mixing column
Put.
5. Mixing of Polymer Melt device according to claim 4, it is characterised in that the heater is heating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069076.XA CN107829155A (en) | 2017-11-03 | 2017-11-03 | A kind of Mixing of Polymer Melt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069076.XA CN107829155A (en) | 2017-11-03 | 2017-11-03 | A kind of Mixing of Polymer Melt device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107829155A true CN107829155A (en) | 2018-03-23 |
Family
ID=61650566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711069076.XA Withdrawn CN107829155A (en) | 2017-11-03 | 2017-11-03 | A kind of Mixing of Polymer Melt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107829155A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677252A (en) * | 2018-06-07 | 2018-10-19 | 章伟 | A kind of nonwoven production manufacture high-temperature fusion device |
| CN108774755A (en) * | 2018-06-07 | 2018-11-09 | 章伟 | A kind of non-woven fabrics high-temperature smelting pot device with agitating function |
-
2017
- 2017-11-03 CN CN201711069076.XA patent/CN107829155A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677252A (en) * | 2018-06-07 | 2018-10-19 | 章伟 | A kind of nonwoven production manufacture high-temperature fusion device |
| CN108774755A (en) * | 2018-06-07 | 2018-11-09 | 章伟 | A kind of non-woven fabrics high-temperature smelting pot device with agitating function |
| CN108677252B (en) * | 2018-06-07 | 2021-11-09 | 章伟 | High-temperature melting device for non-woven fabric production and manufacturing |
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Application publication date: 20180323 |
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