CN201633185U - Linear cone-shaped three-screw extruder - Google Patents
Linear cone-shaped three-screw extruder Download PDFInfo
- Publication number
- CN201633185U CN201633185U CN2009202189648U CN200920218964U CN201633185U CN 201633185 U CN201633185 U CN 201633185U CN 2009202189648 U CN2009202189648 U CN 2009202189648U CN 200920218964 U CN200920218964 U CN 200920218964U CN 201633185 U CN201633185 U CN 201633185U
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- China
- Prior art keywords
- screw
- cone
- shaped
- screw extruder
- screw rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/41—Intermeshing counter-rotating screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model provides a linear cone-shaped three-screw extruder, which comprises a neck ring mould (1), a machine barrel (2), three cone-shaped screws (3), a feeding hopper (4), a reduction gearbox (5) and a motor (6). The rotary motion is transferred to the three cone-shaped screws through the reduction gearbox and the motor. The three cone-shaped screws are cone-shaped, and the central lines of the three cone-shaped screws are linearly arranged. The three cone-shaped screws are driving to form two engagement areas. The linear cone-shaped three-screw extruder integrates the advantages of the parallel three-screw extruder and the cone-shaped two-screw extruder and is taken as the processing and mixing device for the polymer including plastic, the rubber, the propellant and other materials, thus improving the mixing, transporting and plasticizing abilities.
Description
Technical field
The present invention relates to a kind of in-line and arrange conical three-screw rod extruder, can be used in the processing such as plastics, rubber, synthetic fibers, coating, paper pulp, pharmacy, feed, food, explosive mixing, extrude, technical process such as moulding, reaction.This machine both can be used for experiment also can be directly used in production.
Background technology
The process principle of extruder is: material is infeeded one have the screw device of heating, stirring and advance and carry, its screw rod is when precession, remove material is screwed in the thread groove continuously, doing outside continuous being fed forward, mainly is the inboard that material is screw channel, because of be subjected to temperature gradually heat melt, and in screw channel through stirring uniformly and stirring, and finish mix after, supply with and through being positioned at the terminal mould place of defeated material, according to mould fixed shape be extruded into the strip finished product.And in the differentiation of the main version of existing extruder, mainly be that single screw rod, twin-screw and multiscrew three major types are arranged.
Single screw extrusion machine banburying function is very weak, mainly leans on material and screw rod and machine barrel friction, extruding and high-temperature heating and screw extrusion to plastify, general rotating speed and temperature height, and power consumption is higher; Can produce quite high back pressure, so the quality of discharging is wayward, the reduction that output is relative.
Development along with the Polymer Processing industry, moulding and hybrid technique have been proposed more and more higher requirement, single screw extrusion machine since the inherent shortcoming of this body structure (flow field that causes simple in structure is simple, thereby mix scarce capacity) can not satisfy these technological requirements, mainly show: loading is little when (A) filling-modified, is difficult to good mixing; (B) glass strengthens in the modification, and glass adds difficulty, and mixed effect is poor; (C) bad etc. to material processabilities such as PVC-U powders.Double screw extruder then can satisfy the technological requirement of above several respects preferably.In the double screw extruder, it is opposed that the protruding row thread of two screw rods is interlaced row, and in opposed formation " C type " chamber, material is subjected to shearing, friction and heating, rub and strengthen the mixing plasticizing effect; Material forward conveying capacity is big, the output height; Generally need not too high heating-up temperature, can economize the energy, the discharging speed height; Two screw rods are meshing with each other, and are self-cleaning effective, reduced the decomposition carbonization phenomenon of material, thereby obtain general application.
Double screw extruder has the branch of parallel double-screw extruder and conical double screw extruder.Compare the former, the interior cone angle in the outside cone angle of the latter's screw rod external diameter and screw channel root footpath varies in size; The large and small end diameter ratio of screw rod is greater than 1; Spiral groove depth is along the gradual change of screw rod total length.Compare with parallel counter-rotating intermeshing double screw extruder, it is good that the design feature of conical double-screw has determined that it not only has the forced conveyance of the screw channel chamber of sealing, material, residence time of material narrowly distributing, self-cleaning, also has the advantage of following uniqueness:
The screw rod tail diameter increases, and feeding quantity increases, and extrudes output to improve extruder.The screw rod tail diameter increases the bearing capacity that has also increased screw rod, and gear and bearing long service life help arranging thrust bearing and gear; Feeding section screw channel volume is big, easily adds the bulk density powder of larger volume, also helps the heat conduction, and easier realization is to material heating or cooling; The discharge zone screw diameter is little, and peripheral speed is less, and the shearing of generation is lower, and frictional heat is also less, fire damage dangerous little; The screw channel volume reduces gradually along extruding direction, and material obtains compression gradually, thereby makes screw channel be full of material sooner, guarantees material plasticizing gently continuously; Under same production capacity, back pressure can be lower.
The tradition conical double-screw is incorgruous, and patent CN200510118915.3 has invented the conical double screw extruder of equidirectional rotation.Processed material becomes the extruding of 8 fonts around the biconial screw rod in machine barrel, increased fusion time and banburying performance, thereby guaranteed the plasticizing quality of product.Make this bright existing good power of extruding that good soffening be arranged again, extruding and granulation in the applicable plastic processing improved output, cuts down the consumption of energy, and is a kind of novel extruder of suitable various materials processing.But two screw rods still can only form one and mediate the district.Along with polyblend and composite modified develop rapidly, more and more higher to the requirement of refinement, the dispersion mixing of each component in the processing, correspondingly require to have better plasticating equipment, the target of high-quality to realize, efficient, low energy consumption.
Patent 200620154843.8 is developed the parallel three-screw extruder that in-line is arranged on the basis of parallel double-screw extruder, three screw rods are arranged in parallel, and forms two and mediates the district.Relative two screw rods extruder, three-screw extruder has the positive conveyance characteristic of fricting shearing and two region of engagements, and material and screw rod have bigger contact area.Mixing fully, heat transmitting is good, melt capacity is big, exhaust capacity is good and temperature control is better, and have lower energy consumption.
If three screw rods are taper, then develop into conical three-screw rod extruder, the rotation of three screw rods can be carried out in the same way and incorgruous combination.Like this, can gather a plurality of advantages of parallel three-screw extruder and taper extruder, thereby further improve crudy and efficient, cut down the consumption of energy, and expansion forms new process applications.This is the design of this patent just.
The utility model content
The advantage that the present invention has concentrated conical double screw extruder and in-line to arrange parallel three-screw extruder.
Among the present invention, the conical three-screw rod extruder that yi word pattern is arranged is by mouth mould (1), machine barrel (2), and three conical screws (3), loading hopper (4), reduction box (5), motor (6) is formed.Through reduction box, motor is delivered on three screw rods rotatablely moving.Three screw rods all are conical screw, and centre-to-centre spacing becomes big by small end gradually to big end; Three screw rods (7,9,11 3 screw rods among Fig. 1) are in-line to be arranged, i.e. the center of three screw rods be located along the same line on same section (Fig. 1); The dash area of Fig. 1 is represented the region of engagement, and three screw rods mesh in twos and formed two region of engagements (8,10 among Fig. 1), are equivalent to the effect of two pairs of twin-screws.Three screw rods have 4 kinds of direction of rotation combinations (Fig. 3,4,5,6) under the drive of reduction gearbox output shaft.
Being multiplied of region of engagement makes material plasticating in screw rod, homogenizing, and the number of times of shearing is multiplied, and has improved plasticating of equipment effectively, fusion, dispersive property has improved the quality of plasticating, and has shortened process time, meets the requirement of energy-saving and emission-reduction.The centre-to-centre spacing of three axis becomes big by small end gradually to big end, make uni-drive gear box three output shafts that bigger centre-to-centre spacing be arranged, this is that gear and gear shaft in the transmission system and journal bearing and the thrust bearing that supports these gear shafts leave bigger installing space, and it is incomparable that this in-line is arranged parallel three-screw extruder.And the feeding section diameter is big, and the screw channel volume is big, easily adds the bulk density powder of larger volume; The screw channel volume reduces gradually along extruding direction, and material obtains compression gradually, thereby makes screw channel be full of material sooner, guarantees material plasticizing gently continuously; The discharge zone screw diameter is little, and under same pressure and frictional resistance, the moment of torsion that screw rod bears is little; Under same production capacity, back pressure is lower.
Description of drawings
Fig. 1 is the kneading schematic diagram of extruder screw
Fig. 2 is an extruder general structure schematic diagram
Fig. 3-6 is four kinds of direction of rotation combinations of screw rod
Specific embodiments
Under motor 6 drove, through the deceleration and the transmission distribution of reduction box 5, three screw rods 7,9,11 independently rotatablely moved respectively.Three screw rods (7,9,11) be conical screw, and center line is that yi word pattern is arranged (Fig. 1), the centre-to-centre spacing of three axis becomes big by small end gradually to big end, make uni-drive gear box three output shafts that bigger centre-to-centre spacing be arranged, this is that gear and gear shaft in the transmission system and journal bearing and the thrust bearing that supports these gear shafts leave bigger installing space.Three screw rods constitute two and mediate district (8,10).Being multiplied of region of engagement makes material plasticating in screw rod, homogenizing, and the number of times of shearing is multiplied, and has improved plasticating of equipment effectively, fusion, dispersive property has improved the quality of plasticating, and has shortened process time, meets the requirement of energy-saving and emission-reduction.Add materials by charge door 4, under the heat effect of temperature control system on the shearing of screw rod and the machine barrel 2, extrude by head.
Claims (3)
1. the conical three-screw rod extruder arranged of in-line comprises a mouthful mould, machine barrel, three conical screws, loading hopper, reduction box, motor, it is characterized in that: three screw rods are conical screw, the center line yi word pattern is arranged, and the screw rod of three independent rotations has formed two and mediated the district.
2. according to the described conical three-screw rod extruder of claim 1, it is characterized in that: three screw rod center lines are yi word pattern to be arranged, promptly on same section, and being centered close on same the straight line of three screw rods.
3. according to the described conical three-screw rod extruder of claim 1, it is characterized in that: per two adjacent screw rods form one and mediate the district, and three conical screws have formed two and mediated the district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202189648U CN201633185U (en) | 2009-12-10 | 2009-12-10 | Linear cone-shaped three-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202189648U CN201633185U (en) | 2009-12-10 | 2009-12-10 | Linear cone-shaped three-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201633185U true CN201633185U (en) | 2010-11-17 |
Family
ID=43077664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202189648U Expired - Fee Related CN201633185U (en) | 2009-12-10 | 2009-12-10 | Linear cone-shaped three-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201633185U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228037A (en) * | 2014-08-22 | 2014-12-24 | 如皋市通达机械制造有限公司 | Three-screw banded extruder |
| WO2019010593A1 (en) * | 2017-07-12 | 2019-01-17 | 李晓红 | Triple screw extruder |
| WO2023046082A1 (en) * | 2021-09-24 | 2023-03-30 | 华南理工大学 | Same-direction and opposite-direction coordinated, triple-screw, enhanced plasticizing, mixing, and extrusion method and equipment |
-
2009
- 2009-12-10 CN CN2009202189648U patent/CN201633185U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228037A (en) * | 2014-08-22 | 2014-12-24 | 如皋市通达机械制造有限公司 | Three-screw banded extruder |
| WO2019010593A1 (en) * | 2017-07-12 | 2019-01-17 | 李晓红 | Triple screw extruder |
| WO2023046082A1 (en) * | 2021-09-24 | 2023-03-30 | 华南理工大学 | Same-direction and opposite-direction coordinated, triple-screw, enhanced plasticizing, mixing, and extrusion method and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20131210 |