CN203637141U - Thread element assembly applicable to double-screw extruder - Google Patents
Thread element assembly applicable to double-screw extruder Download PDFInfo
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- CN203637141U CN203637141U CN201320682763.XU CN201320682763U CN203637141U CN 203637141 U CN203637141 U CN 203637141U CN 201320682763 U CN201320682763 U CN 201320682763U CN 203637141 U CN203637141 U CN 203637141U
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- Prior art keywords
- screw extruder
- screwing element
- thread
- spiral shell
- double
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- 239000000463 material Substances 0.000 claims abstract description 47
- 230000007704 transition Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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Abstract
The utility model discloses a thread element assembly applicable to a double-screw extruder. The thread element assembly applicable to the double-screw extruder comprises two same thread elements which are meshed with each other, wherein the two thread elements can sleeve corresponding screw shafts; a material storage tank, which extends in the length direction of a thread edge and is used for storing materials, is formed on the front side of the thread edge of each thread element. Due to the adoption of the solution, the thread element assembly applicable to the double-screw extruder is capable of effectively ensuring high efficiency, smoothness and reliability of material transportation of the double-screw extruder and has the advantages of stabilizing blanking amount, improving positive transportation capability and reducing leakage flow and the like. Compared with the prior art, when transporting the materials, the thread element assembly is capable of stacking the materials in the material storage tank which is formed in one side of the thread edge, thus effectively wrapping the materials in the material storage tank and further transporting more materials. Though the manner, the filling degree of the materials is high than that of a common thread element under the same process condition, thereby improving the blanking amount and yield of the materials and reducing the energy consumption simultaneously.
Description
Technical field
The utility model relates to the technical field of double screw extruder accessory, refers in particular to the screwing element combination that a kind of double screw extruder is used.
Background technology
Known in the industry, double screw extruder generally adopts metered charge, is not generally full of material in solid conveying section screw channel, does not have solid plug, and what its Solid Conveying and Melting was mainly leaned on is the positive-displacement ability of this section.Therefore,, if solid conveying section positive-displacement conveying capacity deficiency, material will be deposited in charge door because having little time to be fed forward, and cause difficult feed.
In material hybrid process field, material is made up of matrix resin and additive, along with the needs of development and the manufacturing of technology, the requirement of the aspect such as extensive use and low energy consumption of especially high filling, high dispersive material, the screwing element of increasing high conveying capacity is applied on double screw extruder.In current blending process materials, packing material ratio is from 5%-90%, the particle diameter of material is even higher from 500 order-3000 orders, solid accumulation density is lighter, in the situation that there is no forced-feeding device, the material blanking inequality of feed opening is even difficult to blanking, finally causes producing unstable and properties of product fluctuation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of rationally screwing element combination that double screw extruder is used is reliably provided, this screwing element combination can effectively improve the positive-displacement of material, improve blanking difficulty and the unequal phenomenon of feeding of material, realize abundant mixing, exchange to material.
For achieving the above object, technical scheme provided by the utility model is: the screwing element combination that a kind of double screw extruder is used, comprise intermeshing two identical screwing elements, these two screwing elements are set on corresponding screw shaft, on the throughput direction of screw rod, the side before the spiral shell rib of each screwing element is positioned at is all formed with the stock chest for accommodating material extending along spiral shell rib length direction.
The junction arc transition of the screw channel bottom land of the both sides of described spiral shell rib and screwing element, and with the transition arc radius of spiral shell rib one side of stock chest
R
1＝〔（D－d）／2.73+P／3.54〕×0.35，R
1<R
2
Wherein, R
2for the transition arc radius of spiral shell rib opposite side, D is major diameter of thread, and d is the core diameter of thread, and P is spiral shell rib width.
Described transition arc radius R
1specification be 2-11mm.
Described transition arc radius R
2specification be 5-15mm.
The specification of described outer diameter D is 30-105mm, and the specification of footpath, end d is 22-65mm, and the specification of spiral shell rib width P is 5-44mm.
The specification of the pitch L of described screwing element and helical pitch T is 37-116mm.
Described screwing element is one start screw element.
Described two screwing elements are to be all fixed on respective threaded rod axle by internal spline.
Described internal spline is the one in single groove spline, symmetrical double flute, rectangular spline, involute spline.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, the stock chest that spiral shell rib one side forms has not only increased the space of mass transport, but also can effectively reduce the air inflow of the air of carrying secretly in material, and then more material can be squeezed in backgauge groove and carries, under same process condition, the filling extent of material will, higher than common screwing element, so just can reduce energy consumption in the discharge quantity of raising material and output;
2, stablize discharge quantity, ensure the uniform blanking of material, prevent the fluctuation that blanking inequality causes;
3, improve forward conveying capacity, the conveying of material not only relies on the existing conveying capacity of extruder, and stock chest structure can be fed forward material effectively;
4, reduce leakage current, stock chest structure can effectively be wrapped up material, reduces material and drains back to stream by clearance side, and meanwhile, spiral shell rib width, according to the needs of processing materials, can be adjusted arbitrarily within the specific limits, and spiral shell rib is wider, prevents that gas backstreaming phenomenon is more remarkable.
Brief description of the drawings
Fig. 1 is one of structural representation of screwing element combination of the present utility model.
Fig. 2 be screwing element of the present utility model combination structural representation two.
Fig. 3 is the end view drawing of Fig. 1.
Fig. 4 is the end view drawing of traditional double screw flight element.
Fig. 5 is the structural representation of single screwing element of the present utility model.
Fig. 6 is the B-B cutaway view of Fig. 5.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is described in further detail.
As depicted in figs. 1 and 2, the screwing element combination that double screw extruder described in the present embodiment is used, comprise intermeshing two identical screwing elements 1,2, these two screwing elements 1,2 can be sleeved on corresponding screw shaft, and fix by internal spline, described internal spline is specially the one in single groove spline, symmetrical double flute, rectangular spline, involute spline.Wherein, described two screwing elements 1,2 are specially one start screw element, and in the time that number of starts is fewer, its forward conveying capacity is larger; On the throughput direction of screw rod, a side before the spiral shell rib of each screwing element is positioned at is all formed with the stock chest 3 for accommodating material extending along spiral shell rib length direction, simultaneously, the junction arc transition of the screw channel bottom land of the both sides of described spiral shell rib and screwing element, such design has not only increased the space of mass transport, improve filling rate, the stock chest structure simultaneously forming can reduce the air inflow of the air of carrying secretly in material effectively, more material can be squeezed in stock chest and carries.Two one start screw elements are in intermeshing process, the spiral shell rib of the one start screw element on a screw rod is by the screw channel base closed of the one start screw element on another root screw rod, continuous screw channel is divided into the C shape cell of interruption, bolt rotary one week, C shape cell moves a helical pitch T to heading.
As shown in Figure 3 and Figure 4, be respectively the end view drawing of screwing element combination of the present utility model and the end view drawing of traditional double screw flight element, the structure that this screwing element combines is as can be seen from Figure different from traditional twin-screw screwing element structure, in the time that screw rod is rotated, the combination of this screwing element can effectively be wrapped up, carry material.
As shown in Figure 5 and Figure 6, be respectively the structural representation of single screwing element of the present utility model and the B-B cutaway view of this structural representation, wherein, D is major diameter of thread, and d is the core diameter of thread, and T is lead, and L is pitch, and P is spiral shell rib width, R
1for the transition arc radius of spiral shell rib one side with stock chest 3, R
2for the transition arc radius of spiral shell rib opposite side, its concrete condition is as follows:
1, the specification of the outer diameter D of screwing element: 30-105mm.
2, the specification of footpath, the end d of screwing element: 22-65mm.
3, the specification of the pitch L of screwing element: 37-116mm, one start screw helical pitch T=pitch L.
4, the specification of the spiral shell rib width P of screwing element: 5-44mm, spiral shell rib width P, according to the needs of processing materials, can adjust arbitrarily within the specific limits, and spiral shell rib is wider, prevents that gas backstreaming phenomenon is more remarkable.
5, with the transition arc radius R of spiral shell rib one side of stock chest
1specification: 2-11mm,
R
1=((D-d)/2.73+P/3.54) × 0.35, and R
1<R
2.
6, the transition arc radius R of spiral shell rib opposite side
2specification: 5-15mm.
In sum, adopting after above scheme, the utility model can effectively be guaranteed the efficient of double screw extruder material transportation, smooth and reliable, there is stable discharge quantity, forward conveying capacity is high, reduce the advantages such as leakage current, compared with traditional twin-screw screwing element, in the time of material transportation, in the combination of this screwing element can form material stock chest in spiral shell rib one side, pile up, thereby material is wrapped in stock chest effectively, and then more materials can be carried, like this under same process condition, the filling extent of material will be higher than common screwing element, and then can in improving material discharge quantity and output, reduce energy consumption, be worthy to be popularized.
The examples of implementation of the above are only the preferred embodiment of the utility model, not limit practical range of the present utility model with this, therefore the variation that all shapes according to the utility model, principle are done all should be encompassed in protection domain of the present utility model.
Claims (9)
1. the screwing element combination that double screw extruder is used, comprise intermeshing two identical screwing elements (1,2), these two screwing elements (1,2) are set on corresponding screw shaft, it is characterized in that: on the throughput direction of screw rod, the side before the spiral shell rib of each screwing element is positioned at is all formed with the stock chest for accommodating material (3) extending along spiral shell rib length direction.
2. the combination of a kind of double screw extruder according to claim 1 is used screwing element, is characterized in that: the junction arc transition of the screw channel bottom land of the both sides of described spiral shell rib and screwing element, and with the transition arc radius of spiral shell rib one side of stock chest (3)
R
1＝〔（D－d）／2.73+P／3.54〕×0.35，R
1<R
2
Wherein, R
2for the transition arc radius of spiral shell rib opposite side, D is major diameter of thread, and d is the core diameter of thread, and P is spiral shell rib width.
3. the screwing element combination that a kind of double screw extruder according to claim 2 is used, is characterized in that: described transition arc radius R
1specification be 2-11mm.
4. the screwing element combination that a kind of double screw extruder according to claim 2 is used, is characterized in that: described transition arc radius R
2specification be 5-15mm.
5. the screwing element combination that a kind of double screw extruder according to claim 2 is used, is characterized in that: the specification of described outer diameter D is 30-105mm, the specification of footpath, end d is 22-65mm, and the specification of spiral shell rib width P is 5-44mm.
6. the screwing element combination that a kind of double screw extruder according to claim 1 is used, is characterized in that: the specification of the pitch L of described screwing element and helical pitch T is 37-116mm.
7. the screwing element combination that a kind of double screw extruder according to claim 1 is used, is characterized in that: described screwing element is one start screw element.
8. the screwing element combination that a kind of double screw extruder according to claim 1 is used, is characterized in that: described two screwing elements (1,2) are to be all fixed on respective threaded rod axle by internal spline.
9. the screwing element combination that a kind of double screw extruder according to claim 8 is used, is characterized in that: described internal spline is the one in single groove spline, symmetrical double flute, rectangular spline, involute spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682763.XU CN203637141U (en) | 2013-10-31 | 2013-10-31 | Thread element assembly applicable to double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682763.XU CN203637141U (en) | 2013-10-31 | 2013-10-31 | Thread element assembly applicable to double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203637141U true CN203637141U (en) | 2014-06-11 |
Family
ID=50868418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320682763.XU Expired - Lifetime CN203637141U (en) | 2013-10-31 | 2013-10-31 | Thread element assembly applicable to double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203637141U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107756761A (en) * | 2017-11-21 | 2018-03-06 | 南京科森挤出装备有限公司 | Parallel double-screw taper thread covers and taper hole cylinder |
| CN109070426A (en) * | 2016-04-20 | 2018-12-21 | 株式会社神户制钢所 | Screw-type extruder |
| CN109130138A (en) * | 2018-07-31 | 2019-01-04 | 南京科森挤出装备有限公司 | Parallel double-screw extruder whole one start screw covers combined method |
-
2013
- 2013-10-31 CN CN201320682763.XU patent/CN203637141U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109070426A (en) * | 2016-04-20 | 2018-12-21 | 株式会社神户制钢所 | Screw-type extruder |
| CN107756761A (en) * | 2017-11-21 | 2018-03-06 | 南京科森挤出装备有限公司 | Parallel double-screw taper thread covers and taper hole cylinder |
| CN109130138A (en) * | 2018-07-31 | 2019-01-04 | 南京科森挤出装备有限公司 | Parallel double-screw extruder whole one start screw covers combined method |
| CN109130138B (en) * | 2018-07-31 | 2021-02-02 | 南京科森挤出装备有限公司 | Method for combining all single-head thread sleeves of parallel double-screw extruder |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |