CN206967925U - Embedded short spiral shell rib asymmetric multi-screw extruder in the same direction - Google Patents
Embedded short spiral shell rib asymmetric multi-screw extruder in the same direction Download PDFInfo
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- CN206967925U CN206967925U CN201621353108.XU CN201621353108U CN206967925U CN 206967925 U CN206967925 U CN 206967925U CN 201621353108 U CN201621353108 U CN 201621353108U CN 206967925 U CN206967925 U CN 206967925U
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Abstract
The utility model discloses a kind of embedded short spiral shell rib asymmetric multi-screw extruder in the same direction, and screw mechanism includes intermeshing first screw rod and the second screw rod in extruder, and the first screw rod is one start screw structure, and the second screw rod is four-head helicitic texture；With the embedded short spiral shell rib as secondary spiral shell rib in the screw channel runner formed in first screw rod between two neighboring main spiral shell rib, the height of secondary spiral shell rib is less than or equal to the height of main spiral shell rib.Its processing method is to realize that material conveys between axial positive conveyance power and the first screw rod and the second screw rod using screw mechanism under frictional force collective effect, figure of eight homoclinic orbit flow disturbance is introduced using embedded short spiral shell rib formed to trigger the runner of the whole chaotic mixing in screw channel runner, the first screw rod and the second screw rod composition the differential speed rotation effect of the topological chaos effect of one-to-two, periodic compression dilating effect caused by screw mechanism runner and two screw rods, material is sufficiently mixed, melted and be kneaded plasticizing.
Description
Technical field
Multi-screw extruder technical field is the utility model is related to, more particularly to a kind of embedded short spiral shell rib is asymmetric in the same direction
Multi-screw extruder.
Background technology
Parallel dual-screw extruding machine with self-cleaning function is the hybrid process equipment being widely used at present.This kind equipment master
To include machine barrel and two twin-screws for being parallelly mounted to machine barrel inner chamber.In order to produce high shear, use multiple thread structure more,
It is different which results in the topological route of Flow of Goods and Materials, after processed material enters the inner chamber of machine barrel from charging aperture, material meeting
Machine barrel inner flow passage can be divided into three disconnected runners into different topological runners, such as double thread, material is forward
It will not be mutually mixed each other in course of conveying, the uneven of feed component may result in into different runner material components inequality
It is even, it is this it is uneven will not be improved during material moves ahead by being mixed with each other, this often leads to product quality not
It is stable.Only it can be just mixed with each other in the region for being mounted with kneading block, but kneading block can bring high shear, buildup, dead angle be present
And the problems such as self-cleaning decline.On the other hand, because geometry meshing relation determines, screw channel is also resulted in using multiple thread
Shoal, yield declines.Traditional parallel dual-screw extruding machine, perturbation action only is provided in region of engagement to lift mixing quality,
Lack chaotic mixing trigger mechanism away from region of engagement, moreover, material is consistent in left and right screw channel volume, the stretching field of force can not be introduced and made
With mechanism, the structure that screw channel volume main part lacks effectively lifting mixing can cause distributed rendering effect further to carry
Height, lacking tensile force field-effect causes dispersion mixing undesirable.In addition, twin-screw extrusion machining process is largely full of to be non-
State, the runner having almost no change cause the plasticizing mixing of material to be had a greatly reduced quality, to improve mixed effect and improving yield, work
High shear is usually realized using high rotating speed in journey practice, big L/D ratio screw rod extends processing course, but which brings high energy
The problems such as consumption, the degraded of inefficient and material.In recent years, there is differential speed double-screw extruding technology, although being successfully introduced into
Chaotic mixing and stretching force field, but still lack the topological chaos effect of runner segmentation, the melting of twin screw extrusion
The function such as blending and exhaust still has great room for promotion.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of embedded short spiral shell rib is asymmetric in the same direction
Multi-screw extruder, the extruder of the structure, which can be realized, is combined chaotic mixing, topological chaos and stretching force field, and then
Improve processing efficiency.
The technical solution of the utility model is：A kind of embedded short spiral shell rib asymmetric multi-screw extruder, including machine in the same direction
Cylinder and screw mechanism, screw mechanism are installed in the inner chamber of machine barrel, and screw mechanism includes intermeshing first screw rod and second
Screw rod, the first screw rod are one start screw structure, and the second screw rod is four-head helicitic texture；In first screw rod two neighboring main spiral shell rib it
Between in the screw channel runner that is formed with the embedded short spiral shell rib as secondary spiral shell rib, the height of secondary spiral shell rib is less than or equal to main spiral shell rib
Highly.Wherein, it is engaged using one start screw screw rod with four-head thread screw, forms asymmetric differential structure between the two, be
In the presence of four kinds of reinforcing mixing mechanisms, (i.e. (1) introduces figure of eight homoclinic orbit flow disturbance to trigger screw channel simultaneously in screw mechanism
Whole chaotic mixing, the runner in (2) screw mechanism form the topological chaos effect of cutting one-to-two, between (3) two screw rods
And second compand of property performance period, recompression, the effect of further expansion between screw rod, (4) two screw rod differential speed rotations are strengthened
Effect) provide architecture basics.
The outer contour of first screw rod and the second screw rod is tangent with the inwall of machine barrel, screw mechanism and machine barrel it is interior
Runner is formed between chamber；
First screw rod and the second screw rod rotating Vortex and moment keep engaging, and the rotating ratio of the first screw rod and the second screw rod is
2。
The circular arc of the radial section of first screw rod and the radial section of the second screw rod by multistage radius of curvature not etc.
Alternate with non-circular curve arc to connect and compose, it is to form the first screw rod to form the circular arc of the second screw rod and non-circular curve arc total quantity
Twice of circular arc and non-circular curve arc total quantity.
With reference to the factors such as the differential of two screw rods and the theory of engagement, as a kind of preferred scheme, the footpath of first screw rod
Alternately connected and composed by four arcses and four sections of non-circular curve arcs to section, the radial section of the second screw rod is by eight sections of circular arcs and eight
Section non-circular curve arc alternately connects and composes.
In screw mechanism, the spiral shell rib structure on each screw rod can use following several frame modes：
(1) the spiral shell rib of the main spiral shell rib of first screw rod, secondary spiral shell rib and the second screw rod is the smooth spiral shell rib structure in edge.
The structure can be provided with the super large-tonnage completely self-cleaning mixing of positive conveyance ability.
(2) the spiral shell rib of main the spiral shell rib and the second screw rod of first screw rod is the jagged discontinuous spiral shell rib knot of edge band
Structure；The secondary spiral shell rib of first screw rod is the smooth spiral shell rib structure in edge.The structure surpasses except that can provide with positive conveyance ability
Outside large-tonnage self-cleaning mixing, increasingly complex cutting shunting principle is also introduced, there is provided more powerful distributed rendering ability, but
Self-cleaning ability can decline compared to first way.
(3) first screw rod is cross-linked by multiple kneading blocks of structure identical first and formed, and the second screw rod is by multiple
The kneading block of structure identical second is cross-linked composition.The structure is super large-tonnage with positive conveyance ability except that can provide
Outside completely self-cleaning mixing, stronger tensile force field-effect is also introduced, there is provided more powerful dispersive mixing capability.
As further preferred scheme, the screw mechanism also includes the 3rd screw rod, the first screw rod, the second screw rod and
Three screw rods form three screw rod arrangement modes of yi word pattern, and the structure of the 3rd screw rod is identical with the first screw rod.
The processing method of above-mentioned embedded short spiral shell rib asymmetric multi-screw extruder in the same direction is：Material enters the inner chamber of machine barrel
Afterwards, realized under the frictional force collective effect between the axial positive conveyance power and the first screw rod and the second screw rod of screw mechanism
Material conveys, meanwhile, figure of eight homoclinic orbit flow disturbance is introduced to trigger using the embedded short spiral shell rib on the first screw rod
Whole chaotic mixing in screw channel runner, the runner formed using the first screw rod and the second screw rod form the topological chaos of one-to-two
Effect, two screw rods in periodic compression dilating effect and screw mechanism caused by the runner formed along with screw mechanism
Differential speed rotation acts on, and material is sufficiently mixed, melted and is kneaded plasticizing.
The machine barrel is provided with transportation section, melt zone, exhaust section and mixing extrusion section, transportation section, melt zone, exhaust section and mixed
Refining extruding zone is arranged in order along the conveying direction of material；Transportation section is provided with the charging aperture that is connected with machine barrel inner chamber, on exhaust section
Provided with the exhaust outlet connected with machine barrel inner chamber, the end of mixing extrusion section is provided with discharging opening；
Process of the material in machine barrel is specific as follows：
(1) material is after charging aperture enters the runner of transportation section, and the first screw rod and the second screw rod are respectively along respective screw shaft
Line constant velocity rotation in the same direction；The first screw rod and the axial positive conveyance power of the second screw rod and the first screw rod and the second screw rod it
Between frictional force collective effect under realize charging conveying, meanwhile, pass through the axial backmixing of the embedded short spiral shell rib on the first screw rod
The cutting separating flow tract of effect and two screw rods engagement composition realizes the mixing of material component between two screw rods, and force material to
The runner direction movement of melt zone；
(2) when material is moved at the runner of melt zone, because embedded short spiral shell rib turns over to material on the first screw rod
Action is used and the runner one-to-two of two screw rod engagement compositions cuts interface regeneration function caused by separation and enhances and conducted heat
Journey, and the extension of the cross section of fluid channel of the second screw rod and compression are compressed and extruded acting to material, realize material pre-fusion,
And first screw rod and the second screw rod at a high speed rotation produce frictional heat, while cause material to enter one in the external heat collective effect of machine barrel
Step is melted, and accelerates the separation of the material of melt and the material of solid；Meanwhile the first embedded short spiral shell rib on screw rod will
Figure of eight homoclinic orbit flow disturbance, and the topological runner cutting two of two screw rods is caused to be allocated as with jointly whole in screw channel
Chaotic mixing is triggered, will further speed up the melting process of solid material so that material turns into melt；
(3) material of melt is turned into after the runner of melt zone enters the runner of exhaust section, the first screw rod is one start screw
Runner simultaneously communicates with four runners separated each other in the second screw rod respectively, expands the discharge surface product of material, and the
The compression of the tipping effect and the second screw rod runner of the short spiral shell rib of one screw rod built-in type and cutting centrifugation accelerate gas from
Exhaust outlet is discharged, while the material melted is acted on further to the runner side of mixing extrusion section by the first screw rod and the second screw rod
To motion；
(4) after the material as melt enters the runner of mixing extrusion section, the material of melting is by two screw rod composition streams
Cutting one-to-two topology chaos effect caused by road, and embedded short spiral shell rib will cause figure of eight chummage on the first screw rod
Track flow disturbance acts on, and in the whole triggering chaotic mixing of screw channel, week caused by the runner formed along with two screw rods
The compand of phase property acts on and the differential speed rotation effect of two screw rods, so as to carry out mixing plasticizing to the material of melt, and makes to melt
The material of body is stable to be extruded from discharging opening；Meanwhile the first mutual wiping action between screw rod and the second screw rod realize it is self-cleaning
Effect.
The utility model has the advantages that relative to prior art：
1st, the first screw rod of the present utility model is the one start screw screw rod with embedded short spiral shell rib, and the second screw rod is four-head
Helicitic texture, two screw rod differential engagement rotations, can effectively solve unstable product quality caused by material composition fluctuation
Problem, the powerful transfer efficiency of one start screw depth screw channel is taken into account, has improved Solid Conveying and Melting efficiency, can greatly have been increased
Yield is extruded, is processed suitable for big yield.
2nd, the utility model employs four kinds of reinforcing mixing mechanisms：(1) embedded short spiral shell rib introduces figure of eight Homoclinic
Road flow disturbance triggers screw channel whole process chaotic mixing；The runner of (2) two screw rod compositions forms the topology of cutting one-to-two
Chaos acts on, and improves axial backmixing effect；Between (3) two screw rods and the second screw rod can realize periodic compression expansion, press again
Contracting, the effect of further expansion, stretching force field mechanism is introduced, effectively realize compression preheating and dispersion mixing；(4) two screw rods
Differential speed rotation invigoration effect.Therefore, the utility model enhances mixed milling and diabatic process comprehensively, make completion plastify heat,
Mechanical course greatly shortens, and energy consumption is low, energy conservation and consumption reduction effects are notable.
3rd, in screw mechanism of the present utility model, it ensure that the first screw rod, the second screw rod tightly engage differential speed rotation in the same direction,
Mutual wiping action between two screw rods, realizes process self-cleaning action.
4th, the utility model by introducing embedded short spiral shell rib in the first screw rod, extruded by non-be full of that be particularly suitable for use in
Journey, it is possible to achieve the first screw rod and the second screw rod runner stretching force field, enhance mixed milling intensity and effect comprehensively, have
There is extremely excellent dispersed distribution mixed effect, it is self-cleaning can to increase substantially process in the case of without kneading block
Function, make process residence time destribution narrower, improve processing efficiency and effect, the high yield that is particularly suitable for use in, nanometer material
The processing of material.
Brief description of the drawings
Fig. 1 is embedded short spiral shell the rib screw mechanism of asymmetric multi-screw extruder and the part machine barrel in the same direction of embodiment 1
Structural representation.
Fig. 2 is Fig. 1 plan view.
Fig. 3 is the section view of screw mechanism on A-A directions in Fig. 2.
Fig. 4 is the disturbance of 8-shaped homoclinic orbit, two points of topological chaos and the stretching force field of screw mechanism in embodiment 1
The principle schematic of realization.
Fig. 5 is the structure of the screw mechanism of the embedded short spiral shell rib asymmetric self-cleaning multi-screw extruder in the same direction of embodiment 2
Schematic diagram.
Fig. 6 is the structure of the screw mechanism of the embedded short spiral shell rib asymmetric self-cleaning multi-screw extruder in the same direction of embodiment 3
Schematic diagram.
Fig. 7 is the structure of the screw mechanism of the embedded short spiral shell rib asymmetric self-cleaning multi-screw extruder in the same direction of embodiment 4
Schematic diagram.
Embodiment
With reference to embodiment, the utility model is described in further detail, but embodiment of the present utility model
Not limited to this.
Embodiment 1
A kind of asymmetric multi-screw extruder in the same direction of embedded short spiral shell rib of the present embodiment, its structure as Figure 1-4, are wrapped
Machine barrel 1 and screw mechanism are included, is provided with inner chamber 2 in machine barrel 1, screw mechanism is installed in inner chamber, and screw mechanism includes the first screw rod 3
With the second screw rod 4, the first screw rod and the second screw rod intermeshing, and the outermost edge of the first screw rod and the second screw rod all with it is interior
The inwall of chamber is tangent；The inner chamber of first screw rod, the second screw rod and machine barrel forms runner；As shown in figure 3, the section wheel of the first screw rod
Exterior feature is made up of 4 sections of circular arcs and 4 sections of non-circular curve arcs, and the cross section profile of the second screw rod is by 8 sections of circular arcs and 8 sections of non-circular curve arc structures
Into；And first screw rod be one start screw, the screw channel (groove formed between the main spiral shell rib 13 of arbitrary neighborhood two) of the first screw rod
The interior embedded short spiral shell rib being provided with less than spiral groove depth, for these embedded short spiral shell ribs as secondary spiral shell rib 5, the second screw rod is four-head spiral shell
Line, when the first screw rod and the second screw rod rotate in same direction, the rotating speed of the first screw rod is 2 times of the second screw speed, and two spiral shells
Bar remains that self-cleaning function is realized in the contact that is engaged with each other.As shown in figure 1, the main spiral shell rib of the first screw rod, secondary spiral shell rib and the second spiral shell
The spiral shell rib of bar is the smooth spiral shell rib structure in edge.
The inner chamber of machine barrel is made up of the cylinder groove of two connections, and the cross sectional shape of inner chamber is in " 8 " word droped to the ground.
As shown in figure 3, the pivot O of the first screw rod 31With the pivot O of the second screw rod 42The distance between be C, and first
The maximum outside diameter of screw rod and the second screw rod is D, and minimum diameter is d, then screw inner diameter d is：
D=2C-D.
The cross section profile of first screw rod is made up of 4 sections of circular arcs and 4 sections of non-circular curve arcs, and the cross section profile of the second screw rod is by 8
Section circular arc and 8 sections of non-circular curve arc compositions.
Wherein, 4 sections of circular arcs for forming the first screw sections are M respectively1M2、M3M4、M5M6And M7M8, 4 sections of non-circular curve arcs point
It is not M2M3、M4M5、M6M7And M8M1.The cross section of first screw rod is on O1O2Axial symmetry.Circular arc M5M6It is tangent with inner chamber, it is corresponding
Radius is D/2, and its corresponding central angle is α, and on O1O2Axial symmetry.Meanwhile circular arc M1M2、M3M4And M7M8Corresponding central angle
Also it is α.Circular arc M1M2Radius be Rm, and d/2≤Rm≤D/2；And circular arc M3M4And M7M8Corresponding radius is screw inner diameter d/
2。
Specifically, non-circular curve arc M2M3And M8M1Corresponding central angle is βm, and
Take O1M8For pole axis, for non-circular curve arc M8M1, give：
Non-circular curve arc M8M1Corresponding polar angle is：
Non-circular curve arc M8M1Corresponding polar diameter is：
In addition, M4M5And M6M7Central angle be β, andTake O1M4For pole axis, give：
Non-circular curve arc M4M5Corresponding polar angle is：
Non-circular curve arc M8M1Corresponding polar diameter is：
As shown in figure 3, the cross section profile of the second screw rod is on O1O2Axle and by O2And and O1O2The vertical straight line of axle is symmetrical,
It is made up of 8 sections of circular arcs and 8 sections of non-circular curve arcs.
Wherein, 8 sections of circular arcs are respectively N1N2、N3N4、N5N6、N7N8、N9N10、N11N12、N13N14And N15N16, this 8 sections of circular arcs pair
The central angle answered is α/2, and circular arc N3N4、N7N8、N11N12And N15N16Tangent with machine tube inner wall, its radius is D/2, and
Circular arc N5N6And N13N14Radius be d/2, circular arc N1N2And N9N10Radius be C-Rm(wherein, C rotates for the first screw rod
Center O1With the second screw rod pivot O2The distance between, RmFor circular arc M1M2Radius)；
8 sections of non-circular curve arcs are respectively N2N3、N4N5、N6N7、N8N9、N10N11、N12N13、N14N15And N16N1, wherein, N4N5、
N6N7、N12N13And N14N15Corresponding central angle is β/2, for non-circular curve arc N6N7, take O2N6For pole axis, give：
Non-circular curve arc N6N7Corresponding polar angle is：
Non-circular curve arc N6N7Corresponding polar diameter is：
In addition, N2N3、N8N9、N10N11And N16N1Corresponding central angle is βm/ 2, for non-circular curve arc N2N3, take O2N2
For pole axis, give：
Non-circular curve arc N2N3Corresponding polar angle is：
Non-circular curve arc N2N3Corresponding polar diameter is：
Meanwhile D/d=1.1~5.5, the pitch L of the first screw rod and the second screw rod is 0.01D~10000D.
First screw rod is one start screw screw rod, is provided with the embedded short spiral shell rib as secondary spiral shell rib 5 in its screw channel, and the second spiral shell
Bar is then four-head thread screw.
As shown in Fig. 2 machine barrel 1 is provided with transportation section 6, melt zone 7, exhaust section 8 and mixing extrusion section 9；Transportation section 6, melting
Section 7, exhaust section 8 and mixing extrusion section 9 are arranged in order from the moving direction of processed material；Above transportation section be provided with it is interior
The charging aperture 10 of chamber connection, the exhaust outlet 11 connected with inner chamber is provided with above exhaust section；The end of mixing extrusion section is provided with out
Material mouth 12.
The processing method realized by above-mentioned multi-screw extruder asymmetric in the same direction, comprises the following steps：
(1) material is after charging aperture enters the runner of transportation section, and the first screw rod and the second screw rod are respectively along respective screw rod
Axis differential in the same direction rotates；In the first screw rod and the axial positive conveyance power of the second screw rod and the first screw rod and the second screw rod
Between frictional force collective effect under realize charging conveying, meanwhile, acted on by the secondary axial backmixing of spiral shell rib 5 of the first screw rod and even
The mixing of material component between two screw rods is realized in two screw rod composition cutting separated topology effects, and forces material to melt zone
Move in runner direction；
(2) when material is moved at the runner of melt zone, because the secondary spiral shell rib of the first screw rod is to the tipping effect of material
Enhance diabatic process, and the extension of the second screw rod cross section of fluid channel and compression (as shown in the dash area in Fig. 4 at c) and it is right
Material is compressed and extruded acting, realizes material pre-fusion, and rotation produces frictional heat at a high speed for the first screw rod and the second screw rod,
Plus the external heat collective effect of machine barrel material is further melted；The stream formed due to the first screw rod and the second screw rod
Be present the topological runner characteristic (as shown in the solid line and dotted line in Fig. 4 at b) of one-to-two in road, expand plus the cross sectional shape of runner
Open, compress, further expansion effect, accelerating the separation of the material of melt and the material of solid, meanwhile, the secondary spiral shell rib on the first screw rod
5 will cause " 8 " word homoclinic orbit to disturb and trigger chaotic mixing (the horizontal figure of eight region in such as Fig. 4 at a in screw channel whole process
It is shown), it will further speed up the melting process of the material of solid so that material turns into melt；
(3) for the material of melt after the runner of melt zone enters the runner of exhaust section, the first screw rod is one start screw runner
And communicated respectively with four runners separated each other of the second screw rod, material discharge surface product is expanded, and in the first screw rod
Compression and the extension effect of the tipping effect of secondary spiral shell rib and the second screw rod runner accelerate gas and discharged from exhaust outlet, melt simultaneously
Material acted on by the first screw rod and the second screw rod and further being moved to the runner direction of mixing extrusion section；
(4) after the material of melting enters the runner of mixing extrusion section, referring to Fig. 4, the fluid of melting is by two screw rod groups
(as shown in the solid line and dotted line in Fig. 4 at b), the secondary spiral shell rib of the first screw rod will for one-to-two topology chaos effect caused by into runner
Cause figure of eight homoclinic orbit to disturb and trigger chaotic mixing (the horizontal figure of eight region institute in such as Fig. 4 at a in screw channel whole process
Show), and stretching field action caused by the periodic compression expansion of the first screw rod and the second screw rod composition runner is (as in Fig. 4 at c
Shown in dash area), the effect of four kinds of reinforcing mixing mechanisms such as differential action of two screw rods, so as to be carried out to the material of melt
Plasticizing is kneaded, and makes the material of melt is stable to be extruded from discharging opening；Meanwhile the mutual wiping between first screw rod, the second screw rod
Effect realizes self-cleaning action.
Embodiment 2
A kind of asymmetric multi-screw extruder in the same direction of embedded short spiral shell rib of the present embodiment, compared with Example 1 compared with it is not
It is with part：As shown in figure 5, the spiral shell rib of main the spiral shell rib and the second screw rod of the first screw rod is the jagged discontinuous of edge band
Spiral shell rib structure, the structure have the function that further to strengthen mixing；The secondary spiral shell rib of first screw rod is the smooth spiral shell rib structure in edge.
Embodiment 3
A kind of asymmetric multi-screw extruder in the same direction of embedded short spiral shell rib of the present embodiment, compared with Example 1 compared with it is not
It is with part：Formed as shown in fig. 6, the first screw rod is cross-linked by multiple kneading blocks of structure identical first, the second screw rod
It is cross-linked and is formed by multiple kneading blocks of structure identical second, the structure has the effect for further strengthening melting mixing.
Embodiment 4
A kind of asymmetric multi-screw extruder in the same direction of embedded short spiral shell rib of the present embodiment, compared with Example 1 compared with it is not
It is with part：As shown in fig. 7, screw mechanism also includes the 3rd screw rod 14, the first screw rod, the second screw rod and the 3rd screw rod are formed
Three screw rod arrangement modes of yi word pattern, the structure of the 3rd screw rod are identical with the first screw rod.
As described above, the utility model can be realized preferably, above-described embodiment is only preferably implementation of the present utility model
Example, not it is used for limiting practical range of the present utility model；I.e. all equivalent changes and modifications made according to the utility model content,
All covered by the utility model claims scope claimed.
Claims (7)
1. embedded short spiral shell rib asymmetric multi-screw extruder in the same direction, including machine barrel and screw mechanism, screw mechanism are installed on machine
In the inner chamber of cylinder, it is characterised in that screw mechanism includes intermeshing first screw rod and the second screw rod, and the first screw rod is single head
Helicitic texture, the second screw rod are four-head helicitic texture；In the screw channel runner formed in first screw rod between two neighboring main spiral shell rib
With the embedded short spiral shell rib as secondary spiral shell rib, the height of secondary spiral shell rib is less than or equal to the height of main spiral shell rib；
The radial section of first screw rod and the radial section of the second screw rod are by multistage radius of curvature circular arc not etc. and non-
Circular curve arc is alternate to be connected and composed, and it is to form the circular arc of the first screw rod to form the circular arc of the second screw rod and non-circular curve arc total quantity
And twice of curve arc total quantity.
2. embedded short spiral shell rib according to claim 1 asymmetric multi-screw extruder in the same direction, it is characterised in that described
The outer contour of one screw rod and the second screw rod is tangent with the inwall of machine barrel, and stream is formed between screw mechanism and the inner chamber of machine barrel
Road；
First screw rod and the second screw rod rotating Vortex and moment keep engaging, and the rotating ratio of the first screw rod and the second screw rod is 2.
3. embedded short spiral shell rib according to claim 1 asymmetric multi-screw extruder in the same direction, it is characterised in that described
The radial section of one screw rod is alternately connected and composed by four arcses and four sections of non-circular curve arcs, and the radial section of the second screw rod is by eight
Section circular arc and eight sections of non-circular curve arcs alternately connect and compose.
4. embedded short spiral shell rib according to claim 1 asymmetric multi-screw extruder in the same direction, it is characterised in that described
The spiral shell rib of the main spiral shell rib of one screw rod, secondary spiral shell rib and the second screw rod is the smooth spiral shell rib structure in edge.
5. embedded short spiral shell rib according to claim 1 asymmetric multi-screw extruder in the same direction, it is characterised in that described
The spiral shell rib of main the spiral shell rib and the second screw rod of one screw rod is the jagged discontinuous spiral shell rib structure of edge band；The secondary spiral shell of first screw rod
Rib is the smooth spiral shell rib structure in edge.
6. embedded short spiral shell rib according to claim 1 asymmetric multi-screw extruder in the same direction, it is characterised in that described
One screw rod is cross-linked by multiple kneading blocks of structure identical first and formed, and the second screw rod is mediated by multiple structure identicals second
Block is cross-linked composition.
7. embedded short spiral shell rib according to claim 1 asymmetric multi-screw extruder in the same direction, it is characterised in that the spiral shell
Linkage also includes the 3rd screw rod, and the first screw rod, the second screw rod and the 3rd screw rod form three screw rod arrangement modes of yi word pattern, the
The structure of three screw rods is identical with the first screw rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621353108.XU CN206967925U (en) | 2016-12-09 | 2016-12-09 | Embedded short spiral shell rib asymmetric multi-screw extruder in the same direction |
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| CN201621353108.XU CN206967925U (en) | 2016-12-09 | 2016-12-09 | Embedded short spiral shell rib asymmetric multi-screw extruder in the same direction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476242A (en) * | 2016-12-09 | 2017-03-08 | 广东轻工职业技术学院 | The asymmetric in the same direction multi-screw extruder of embedded short spiral shell rib and its processing method |
| WO2020220495A1 (en) * | 2019-04-28 | 2020-11-05 | 五邑大学 | Extruder employing multiple screws rotating in same direction at different rotation speeds, and processing method |
-
2016
- 2016-12-09 CN CN201621353108.XU patent/CN206967925U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476242A (en) * | 2016-12-09 | 2017-03-08 | 广东轻工职业技术学院 | The asymmetric in the same direction multi-screw extruder of embedded short spiral shell rib and its processing method |
| CN106476242B (en) * | 2016-12-09 | 2019-05-07 | 广东轻工职业技术学院 | Embedded short spiral shell rib asymmetric multi-screw extruder and its processing method in the same direction |
| WO2020220495A1 (en) * | 2019-04-28 | 2020-11-05 | 五邑大学 | Extruder employing multiple screws rotating in same direction at different rotation speeds, and processing method |
| US11648721B2 (en) | 2019-04-28 | 2023-05-16 | Wuyi University | Co-rotating dual speed multi-screw extruder and processing method thereof |
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