CN102776579B - Continuous adjustable and controllable water vapor sealing type double screw rod extruder - Google Patents
Continuous adjustable and controllable water vapor sealing type double screw rod extruder Download PDFInfo
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- CN102776579B CN102776579B CN201210079647.9A CN201210079647A CN102776579B CN 102776579 B CN102776579 B CN 102776579B CN 201210079647 A CN201210079647 A CN 201210079647A CN 102776579 B CN102776579 B CN 102776579B
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Abstract
The invention relates to a continuous adjustable and controllable water vapor sealing type double screw rod extruder, which is mainly used for polyvinyl alcohol fiber melt spinning by using water as plasticizers and comprises double screw rods (1), a jacket (2), a sealing type pressure control valve (3), a cooling sleeve (4), a metering feeding device (5), a screw rod temperature control device (6), a driving transmission system (7), a motor (8) and the like. The continuous adjustable and controllable water vapor sealing type double screw rod extruder is characterized in that 1, the double screw rods at least consist of a metering feeding device (4), a small-lead-stroke positive threaded element (9), an engaging block (10) and an opposite threaded element (11), and the swelling and melting continuity is realized; 2, the threaded elements of the double screw rods at least consist of a first threaded element (12), a second threaded element (13) and a third threaded element (14), and the water vapor is sealed by utilizing the pressure difference; and 3, through the arrangement of the sealed pressure control valve (3), the pressure can be regulated when the process is changed, and the water vapor sealing is realized.
Description
Technical field
The present invention relates to a kind of double screw extruder, particularly relate to a kind of the swelling of polyvinyl alcohol melt spinning that can be used in, melting, extrudes the regulatable water vapor seal type of continous mode twin-screw.
Background technology
Polyvinyl alcohol (PVA) is a kind of function admirable, broad-spectrum polymer.Conventional P VA fiber can pass through wet spinning, gel spinning manufacture, and these method operation more complicated, environmental pollution is larger.Owing to containing great amount of hydroxy group in polyvinyl alcohol molecule structure, can be at a large amount of hydrogen bonds of large intermolecular formation, cause its fusing point and decomposition temperature to approach, be difficult in theory use economy, efficient, the melt spinning method that environmental pollution is little.At present, researcher, by hydrogen bond between modifier water destruct polyvinyl alcohol molecule, limits its crystallization, has reduced its fusing point, has obtained the melt spinning process window of vinal.
In Polymer Processing equipment, screw extruder is one of the most important and the most outstanding equipment, at present, single screw extrusion machine, double screw extruder and multi-screw extruder have all been realized commercialization in industry, wherein, double screw extruder can be used as polyblend, a kind of continuous chemical reactor of polymer reaction, occupies again most important position, and its application is also more and more extensive.Double screw extruder generally can be divided into intermeshing co-rotating twin-screw extruder, intermeshing counter rotating twin screw extruder, and non-engaging twin-screw extruder and conical double screw extruder have been obtained good effect in the processing and forming of thermoplastic.
But, using before common screw extruder carries out melt spinning to polyvinyl alcohol at present, all will be to carrying out swelling treatment between polyvinyl alcohol raw material and plasticizer in other equipment, process among adding afterwards screw extruder.A kind of method of preparing high performance polyvinyl alcohel fiber that is suitable for large-scale industrial production described in Chinese patent CN1786302; in closed container, carry out independent swelling treatment by polyvinyl alcohol and containing hydramine composite modifier, and used general extruding-spinning equipment to process.Chinese patent CN101899722, the preparation method of the polyvinyl alcohol coarse denier silk described in CN102086535, has carried out more than 2 hours swelling process to polyvinyl alcohol and plasticizer water etc. separately, and has used common single screw rod melting to extrude processing.Above-mentioned melt spinning is produced the method for vinal, by the swelling process of spinning material with melt extrude process and process respectively, it is the discontinuous mode of production, in large-scale commercial process, will greatly reduce production efficiency, simultaneously, the consumption that also can improve manpower and material resources, production cost improves thereupon.In addition, in the melt spinning process of polyvinyl alcohol, owing to containing a large amount of moisture content in melt, at single screw rod or twin-screw screw at high temp melting zone, under larger pressure, can evaporate a large amount of steam, steam can be from charge door against going out, polyvinyl alcohol and water ratio are uncontrollable within certain scope, melt viscosity cannot keep, cannot obtain the vinal that performance is higher, spinning even cannot be carried out smoothly, further, in the time that spinning technique need to be adjusted, screw rod internal pressure is also uncontrollable within sealing the condition needing.Above-mentioned patent is all to use common screw extruder to process, and also fails to solve these problems that polyvinyl alcohol faces in melt-spinning technology.
Summary of the invention
The invention provides a kind of the swelling of polyvinyl alcohol melt spinning that can be used in, melting, extrude the regulatable water vapor seal type of continous mode twin-screw, object is to overcome under prior art double screw extruder for the deficiency of polyvinyl alcohol melt spinning, realize swelling taking water as plasticizer polyvinyl alcohol melt spinning, melting, extruding serialization produces, and avoided steam in polyvinyl alcohol melt spinning process contrary go out, steam is played to the effect of sealing, keep the ratio of polyethylene alcohol and water in melt within the specific limits, ensure the carrying out of polyvinyl alcohol melt spinning, and, in the time that need to changing, spinning technique can carry out the dynamic adjustments of pressure, still ensure the sealing of steam.
The object of the invention is to be achieved through the following technical solutions:
The regulatable water vapor seal type of a kind of continous mode of the present invention double screw extruder, comprises twin-screw, chuck, closed type pressure control valve, cooling cover, measurement charging device, extruder temperature control device, driving transmission system and motor etc.Described twin-screw comprises that feed zone, swollen region, melting zone and metering extrude district successively;
The screwing element of the swollen region of described twin-screw is at least made up of little helical pitch forward screwing element, gear block and reverse thread element; Combination at least comprises: be followed successively by a circulation of little helical pitch forward screwing element, gear block and reverse thread element;
The screwing element of the melting zone of described twin-screw has at least tri-kinds of screwing element I, screwing element II and screwing element III to combine; Combination at least comprises: be followed successively by least one circulation of screwing element I, screwing element II and screwing element III, and after described circulation, meet screwing element I again; Or combination comprises screwing element I, connect afterwards at least one circulation of screwing element II and screwing element III, and after described circulation, meet again screwing element I;
The present invention realizes the swelling of polyvinyl alcohol melt spinning, melting, extrude continous mode produce, to steam seal and the principle that can regulate and control pressure as described below:
One, designs two sections of measurement charging devices, within the part by weight of polyvinyl alcohol and water is controlled to the proportion needing.Measurement charging device for polyvinyl alcohol raw materials is positioned at screw rod feeding section end, after being positioned at above-mentioned measurement charging device for the measurement charging device adding water (along mass transport direction), require between two sections of measurement charging device phase mutual edge distance 100mm to 500mm, and within being all positioned at screw rod feeding section, can ensure that two kinds of raw materials evenly mix, not putty.
Its two, designed the larger twin-screw melt zone of draw ratio, polyvinyl alcohol and water are obtained in this region of twin-screw swelling fully.Described twin-screw section is positioned at swelling section, forms a basic circulation section by little helical pitch forward screwing element, gear block and reverse thread element.Material, at little helical pitch forward screwing element place build-up pressure, enters in reverse gear block and reverse thread element and repeatedly mixes, and obtains fully swelling.
Its three, design following screwing element, object is for to seal steam, screwing element combination is positioned at twin-screw melting zone.Screwing element I has the screw rod root footpath and the spiral groove depth that are of moderate size; Screwing element II has larger screw rod root footpath, less spiral groove depth, and material has less flow herein, larger pressure; Screwing element III has compared with small screw root footpath, larger spiral groove depth, and material has larger flow herein, less pressure.Above three groups of screwing elements have identical external diameter and centre-to-centre spacing, according to screwing element I, screwing element II, the synthetic basic circulation section of der group of screwing element III, now, the screw channel place moderate pressure of screwing element I, pressure is P1, and the screw channel pressure of screwing element II is higher, and pressure is P2, in the screw channel of screwing element III, pressure is lower, and pressure is P3.When steam is from screwing element III adverse current to screwing element II and when screwing element III junction, due to P3 < P2, pressure differential cannot continue toward charging adverse current in the other direction steam, and vapor seal is achieved.
Its four, further, at material proportion, charging rate, when the technological parameters such as screw speed need to change, above-mentioned twin-screw higher-pressure region, the pressure of low-pressure area will change, and pressure can not meet the requirement of water vapor seal, now needs pressure to adjust.The present invention is provided with closed type pressure-regulating valve door above low-pressure area screwing element, can be by regulating the size in low-pressure area space to realize the adjustment of pressure, obtain one and can realize sealing to steam, and do not affect the convenient pressure of spinning, water vapor seal is still accomplished.The structure that closed type pressure-regulating valve door can adopt " double screw extruder and application thereof " (the honest and just filial piety of China Light Industry Press is just write) to introduce.
The screwing element of above-mentioned swollen region twin-screw has little helical pitch forward screwing element, gear block and reverse thread element composition at least; Combination at least comprises: be followed successively by least one circulation of little helical pitch forward screwing element, gear block and reverse thread element, and after described circulation, connect common helical pitch screwing element.
The screwing element of above-mentioned melting zone twin-screw has at least tri-kinds of screwing element I, screwing element II and screwing element III to combine; Combination at least comprises: be followed successively by least one circulation of screwing element I, screwing element II and screwing element III, and after described circulation, meet screwing element I again; Or combination comprises screwing element I, connect afterwards at least one circulation of screwing element II and screwing element III, and after described circulation, meet again screwing element I; Described screwing element I, screwing element II and screwing element III meet following relation:
h
2S
2＜h
1S
1＜h
3S
3；D
03＜D
01＜D
02；
Wherein said h
1for the spiral groove depth of screwing element I, S
1for the flight pitch of screwing element I, D
01for the screw rod root footpath of screwing element I; h
2for the spiral groove depth of screwing element II, S
2for the flight pitch of screwing element II, D
02for the screw rod root footpath of screwing element II; h
3for the spiral groove depth of screwing element III, S
3the flight pitch of screwing element III, D
03for the screw rod root footpath of screwing element III.
The screwing element III top of above-mentioned melting zone twin-screw is provided with closed type pressure control valve.
As preferred technical scheme:
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, described screwing element important technological parameters is as follows:
Little helical pitch forward screwing element
Screw rod root footpath D
0z>=15mm, spiral groove depth h
z>=15mm, flight pitch S
z>=5mm, spiral shell rib width B
z>=5mm;
Wherein, 0.3D
0z≤ h
z≤ 0.6D
0z, B
z≤ S
z;
Gear block
30 °≤α≤90 °, stagger arrangement angle
Reverse thread element
Screw rod root footpath D
0f>=15mm, spiral groove depth h
f>=15mm, flight pitch S
f>=10mm, spiral shell rib width B
f>=5mm;
Wherein, 0.3D
0f≤ h
f≤ 0.6D
0f, B
f< S
f;
Screwing element I
Screw rod root footpath D
01>=15mm, spiral groove depth h
1>=15mm, flight pitch S
1>=10mm, spiral shell rib width B
1>=10mm;
Wherein, 0.3D
01≤ h
1≤ 0.6D
01, B
1≤ S
1;
Screwing element II
Screw rod root footpath D
02>=20mm, spiral groove depth h
2>=10mm, flight pitch S
2>=5mm, spiral shell rib width: B
2>=5mm;
Wherein, 0.1D
02≤ h
2≤ 0.3D
02, B
2≤ S
2;
Screwing element III
Screw rod root footpath D
03>=10mm, spiral groove depth h
3>=20mm, flight pitch S
3>=10mm, spiral shell rib width: B
3>=10mm;
Wherein, 0.6D
03≤ h
3≤ 2D
03, B
3≤ S
3.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, described pressure control valve, sealing smooth block length 20mm≤L
y≤ 100mm, sealing smooth block diameter 60mm≤d
y≤ 170mm, chuck seat thickness 40mm≤s
y≤ 80mm, radially pull bar length 80mm≤l
y≤ 120mm, sealed valve quantity 1≤n
y≤ 4.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, draw ratio 12≤L/D≤80 of described twin-screw.Screw slenderness ratio is an Important Parameters, and the draw ratio scope of dissimilar screw extruder is different.For the simple extruded product of technique and granulation, only need the smaller screw extruder of major diameter.In the time that needs carry out the processing such as blend, filling, enhancing, reaction to polymer, sometimes need multiple charge doors, need to, compared with long residence time, just need to use the screw extruder that draw ratio is larger.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, the centre-to-centre spacing A >=D-h of described twin-screw.Centre-to-centre spacing between two screw rods of double screw extruder is an important parameter, and he has determined Transmission System in Twin Screw Extruder output shaft, the size design in thrust bearing and screw rod external diameter and root footpath etc.For engagement type parallel double-screw, D-h≤A≤D, for non-engagement type parallel double-screw, general A=D, or A is slightly larger than D.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, described D
03=0.5D
02=2/3D
01.For parallel double-screw extruder, each screwing element has identical external diameter, reacted to a great extent the production capacity size of double screw extruder, screw rod root footpath and spiral groove depth have determined the size of the mass flow of screwing element part, can in twin-screw, set up different pressure distribution.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, described h
1=0.4D
01, B
1=S
1.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, described h
2=0.2D
02, B
2=S
2.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode twin-screw, described h
3=D
03, 1.1S
3≤ B
3≤ 2S
3.
For engagement type double screw extruder, the size of flight pitch and spiral shell rib width has directly affected the engagement system of twin-screw, in the time that flight pitch S equates with spiral shell rib width B, can produce the full engagement type twin-screw that portraitlandscape all seals, there is stronger mass transport ability.In the time that flight pitch S is greater than spiral shell rib width B, can produce longitudinally or the twin-screw of sideways open, there is good mixing of materials ability.
Beneficial effect
The present invention compared with prior art has the following advantages:
One, uses measurement charging device control mixing of materials ratio, utilizes big L/D ratio, and multistage temperature control twin-screw makes polyvinyl alcohol melt spinning realize serialization, has greatly improved production efficiency.
They are two years old, by brand-new design and the combination of double thread element, in twin-screw, obtain specific pressure distribution, utilize pressure differential to seal steam, can keep the material ratio of melt, the viscosity that keeps melt, carries out spinning smoothly, can improve the performance of product and the stability of product quality.
Its three, in the time that spinning technique need to change, can carry out dynamic adjustments to pressure by closed type pressure-regulating valve door, can ensure the sealing of steam, can adapt to the production under multiple condition, greatly having improved equipment is versatility, has greatly saved cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the regulatable water vapor seal type of a kind of continous mode of the present invention double screw extruder
The local enlarged diagram of swollen region screwing element of the regulatable water vapor seal type of Fig. 2 a kind of continous mode of the present invention twin-screw
Fig. 3 is the local enlarged diagram of the regulatable water vapor seal type of a kind of continous mode of the present invention double screw extruder melting zone screwing element
The closed type pressure-regulating valve door schematic cross-section of the regulatable water vapor seal type of Fig. 4 a kind of continous mode of the present invention twin-screw
Wherein, 1: twin-screw 2: chuck 3: closed type pressure control valve 4: cooling cover 5: measurement charging device 6: extruder temperature control device 7: drive transmission system 8: and motor 9: little helical pitch forward screwing element 10: gear block 11: and reverse thread element 12: screwing element I 13: screwing element II 14: screwing element 15: sealing smooth block 16: chuck seat 17: radially pull bar
Detailed description of the invention:
Below in conjunction with detailed description of the invention, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
The regulatable water vapor seal type of a kind of continous mode of the present invention double screw extruder, comprise twin-screw (1), chuck (2), closed type pressure control valve (3), cooling cover (4), measurement charging device (5), extruder temperature control device (6), driving transmission system (7) and motor (8) etc.; One, described twin-screw is at least made up of measurement charging device (4), little helical pitch forward screwing element (8), gear block (9) and reverse thread element (10); Its two, described twin-screw screwing element is at least made up of screwing element I (11), screwing element II (12) and screwing element III (13); Its three, envelope type pressure control valve (3) is set in screwing element III (13) top;
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, the combination of screwing element I (11), screwing element II (12) and screwing element III (13) at least comprises: be followed successively by least one circulation of screwing element I (11), screwing element II (12) and screwing element III (13), and after described circulation, meet screwing element I (11) again; Or combination comprises screwing element I (11), connect afterwards at least one circulation of screwing element II (12) and screwing element III (13), and after described circulation, meet again screwing element I (11); Described screwing element I (11), screwing element II (12) and screwing element III (13) meet following relation:
h
2S
2＜h
1S
1＜h
3S
3；D
03＜D
01＜D
02；
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, two sections of measurement charging device phase mutual edge distance 100mm≤l
j≤ 500mm.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, described screwing element important technological parameters is as follows:
Little helical pitch forward screwing element (8)
Screw rod root footpath D
0z>=15mm, spiral groove depth h
z>=15mm, flight pitch S
z>=5mm, spiral shell rib width B
z>=5mm;
Wherein, 0.3D
0z≤ h
z≤ 0.6D
0z, B
z≤ S
z;
Gear block (9)
30 °≤α≤90 °, stagger arrangement angle
Reverse thread element (10)
Screw rod root footpath D
0f>=15mm, spiral groove depth h
f>=15mm, flight pitch S
f>=10mm, spiral shell rib width B
f>=5mm;
Wherein, 0.3D
0f≤ h
f≤ 0.6D
0f, B
f≤ S
f;
Screwing element I (11)
Screw rod root footpath D
01>=15mm, spiral groove depth h
1>=15mm, flight pitch S
1>=10mm, spiral shell rib width B
1>=10mm;
Wherein, 0.3D
01≤ h
1≤ 0.6D
01, B
1≤ S
1;
Screwing element II (12)
Screw rod root footpath D
02>=20mm, spiral groove depth h
2>=10mm, flight pitch S
2>=5mm, spiral shell rib width: B
2>=5mm;
Wherein, 0.1D
02≤ h
2≤ 0.3D
02, B
2≤ S
2;
Screwing element III (13)
Screw rod root footpath D
03>=10mm, spiral groove depth h
3>=20mm, flight pitch S
3>=10mm, spiral shell rib width: B
3>=10mm;
Wherein, 0.6D
03≤ h
3≤ 2D
03, B
3≤ S
3.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, described pressure control valve (3), sealing smooth block (15) length 20mm≤L
y≤ 100mm, sealing smooth block (15) diameter 60mm≤d
y≤ 170mm, chuck seat (16) thickness 40mm≤s
y≤ 80mm, radially pull bar (17) length 80mm≤l
y≤ 120mm, sealed valve quantity 1≤n
y≤ 4.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, draw ratio 12≤L/D≤80 of described twin-screw.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, the centre-to-centre spacing A >=D-h of described twin-screw.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, described D
03=0.5D
02=2/3D
01.As above-mentioned a kind of continous mode water vapor seal type double screw extruder, described h
1=0.4D
01, B
1=S
1.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, described h
2=0.2D
02, B
2=S
2.
As the regulatable water vapor seal type of above-mentioned a kind of continous mode double screw extruder, described h
3=D
03, 1.1S
3≤ B
3≤ 2S
3.
Fig. 1 is the schematic diagram of the regulatable water vapor seal type of a kind of continous mode of the present invention double screw extruder, described continous mode water vapor seal type double screw extruder is by twin-screw (1), chuck (2), closed type pressure control valve (3), cooling cover (4), measurement charging device (5), extruder temperature control device (6), drives the compositions such as transmission system (7) and motor (8).
Fig. 2 is the local enlarged diagram of the regulatable water vapor seal type double screw extruder of a kind of continous mode of the present invention swollen region screwing element, and described screwing element is made up of little helical pitch forward screwing element (9), engagement fast (10) and reverse thread element (11).
Fig. 3 is the local enlarged diagram of the regulatable water vapor seal type of a kind of continous mode of the present invention double screw extruder melting zone screwing element, and described screwing element is made up of screwing element I (12), screwing element II (13) and screwing element III (14).
Fig. 4 is the closed type pressure-regulating valve door schematic cross-section of the regulatable water vapor seal type of a kind of continous mode of the present invention twin-screw, mainly by sealing smooth block (15), chuck seat (16) and radially pull bar (17) etc. form.
Claims (7)
1. the regulatable water vapor seal type of a continous mode double screw extruder, comprises twin-screw, chuck, closed type pressure control valve, cooling cover, measurement charging device, extruder temperature control device, driving transmission system and motor; It is characterized in that: described twin-screw comprises that feed zone, swollen region, melting zone and metering extrude district successively;
The screwing element of the swollen region of described twin-screw is at least made up of little helical pitch forward screwing element, gear block and reverse thread element; Combination at least comprises: be followed successively by a circulation of little helical pitch forward screwing element, gear block and reverse thread element;
The screwing element of the melting zone of described twin-screw has at least three kinds of screwing element I, screwing element II and screwing element III to combine; Combination at least comprises: be followed successively by least one circulation of screwing element I, screwing element II and screwing element III, and after described circulation, connect screwing element I again; Or combination comprises screwing element I, connect afterwards at least one circulation of screwing element II and screwing element III, and after described circulation, connect again screwing element I;
The screwing element III top, melting district of described twin-screw is provided with closed type pressure-regulating valve door;
Described screwing element I, screwing element II and screwing element III meet following relation:
h
2S
2＜h
1S
1＜h
3S
3；
D
03＜D
01＜D
02；
Wherein said h
1for the spiral groove depth of screwing element I, S
1for the flight pitch of screwing element I, D
01for the screw rod root footpath of screwing element I; h
2for the spiral groove depth of screwing element II, S
2for the flight pitch of screwing element II, D
02for the screw rod root footpath of screwing element II; h
3for the spiral groove depth of screwing element III, S
3the flight pitch of screwing element III, D
03for the screw rod root footpath of screwing element III;
Described screwing element important technological parameters is as follows:
Little helical pitch forward screwing element
Screw rod root footpath D
0z>=15mm, spiral groove depth h
z>=15mm, flight pitch S
z>=5mm, spiral shell rib width B
z>=5mm;
Wherein, 0.3D
0z≤ h
z≤ 0.6D
0z, B
z≤ S
z;
Gear block
30 °≤α≤90 °, stagger arrangement angle;
Reverse thread element
Screw rod root footpath D
0f>=15mm, spiral groove depth h
f>=15mm, flight pitch S
f>=10mm, spiral shell rib width B
f>=5mm;
Wherein, 0.3D
0f≤ h
f≤ 0.6D
0f, B
f< S
f;
Screwing element I
Screw rod root footpath D
01>=15mm, spiral groove depth h
1>=15mm, flight pitch S
1>=10mm, spiral shell rib width B
1>=10mm;
Wherein, 0.3D
01≤ h
1≤ 0.6D
01, B
1≤ S
1;
Screwing element II
Screw rod root footpath D
02>=20mm, spiral groove depth h
2>=10mm, flight pitch S
2>=5mm, spiral shell rib width B
2>=5mm;
Wherein, 0.1D
02≤ h
2≤ 0.3D
02, B
2≤ S
2;
Screwing element III
Screw rod root footpath D
03>=10mm, spiral groove depth h
3>=20mm, flight pitch S
3>=10mm, spiral shell rib width B
3>=10mm;
Wherein, 0.6D
03≤ h
3≤ 2D
03, B
3≤ S
3.
2. the regulatable water vapor seal type of a kind of continous mode according to claim 1 double screw extruder, is characterized in that, described measurement charging device has 2 at least, and position is positioned at twin-screw charging zone, 2 measurement charging device phase mutual edge distance 100mm≤l
j≤ 500mm.
3. the regulatable water vapor seal type of a kind of continous mode according to claim 1 double screw extruder, is characterized in that, draw ratio 12≤L/D≤80 of described twin-screw.
4. the regulatable water vapor seal type of a kind of continous mode according to claim 1 double screw extruder, is characterized in that, the centre-to-centre spacing A >=D-h of described twin-screw,
Wherein said D is screw diameter, and h is spiral groove depth.
5. the regulatable water vapor seal type of a kind of continous mode according to claim 1 double screw extruder, is characterized in that described D
03=0.5D
02=2/3D
01.
6. the regulatable water vapor seal type of a kind of continous mode according to claim 1 double screw extruder, is characterized in that described h
1=0.4D
01, B
1=S
1.
7. the regulatable water vapor seal type of a kind of continous mode according to claim 1 double screw extruder, is characterized in that described h
2=0.2D
02, B
2=S
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079647.9A CN102776579B (en) | 2012-03-22 | 2012-03-22 | Continuous adjustable and controllable water vapor sealing type double screw rod extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079647.9A CN102776579B (en) | 2012-03-22 | 2012-03-22 | Continuous adjustable and controllable water vapor sealing type double screw rod extruder |
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| Publication Number | Publication Date |
|---|---|
| CN102776579A CN102776579A (en) | 2012-11-14 |
| CN102776579B true CN102776579B (en) | 2014-08-06 |
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ID=47121678
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|---|---|---|---|
| CN201210079647.9A Expired - Fee Related CN102776579B (en) | 2012-03-22 | 2012-03-22 | Continuous adjustable and controllable water vapor sealing type double screw rod extruder |
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| CN113500736A (en) * | 2021-07-29 | 2021-10-15 | 青岛微孔塑料科技有限公司 | Production device and method for polypropylene extruded low-rate microporous foamed sheet |
| CN115055154B (en) * | 2022-06-30 | 2023-07-21 | 武汉纺织大学 | Polymer liquid phase tackifying device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599292A (en) * | 1967-07-17 | 1971-08-17 | Montedison Spa | Equipment for the injection molding of thermoplastic materials having a high content of volatile substances |
| US4243629A (en) * | 1978-03-29 | 1981-01-06 | P.W.T. Plastic World Technology Limited | Method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid PVC |
| CN1438107A (en) * | 2003-03-27 | 2003-08-27 | 四川大学 | Method for continuously extrauding super-high molecular-weight polytene composite material by double screw-rod |
| CN101913238A (en) * | 2010-08-19 | 2010-12-15 | 芜湖纽麦特新材料有限公司 | Extruding equipment |
-
2012
- 2012-03-22 CN CN201210079647.9A patent/CN102776579B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599292A (en) * | 1967-07-17 | 1971-08-17 | Montedison Spa | Equipment for the injection molding of thermoplastic materials having a high content of volatile substances |
| US4243629A (en) * | 1978-03-29 | 1981-01-06 | P.W.T. Plastic World Technology Limited | Method and apparatus for the continuous extrusion and blowing of thin films of plastic material in particular rigid PVC |
| CN1438107A (en) * | 2003-03-27 | 2003-08-27 | 四川大学 | Method for continuously extrauding super-high molecular-weight polytene composite material by double screw-rod |
| CN101913238A (en) * | 2010-08-19 | 2010-12-15 | 芜湖纽麦特新材料有限公司 | Extruding equipment |
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|---|---|
| CN102776579A (en) | 2012-11-14 |
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