CN102205619A - Exhaust-type differential double-screw extruder - Google Patents
Exhaust-type differential double-screw extruder Download PDFInfo
- Publication number
- CN102205619A CN102205619A CN201110085510XA CN201110085510A CN102205619A CN 102205619 A CN102205619 A CN 102205619A CN 201110085510X A CN201110085510X A CN 201110085510XA CN 201110085510 A CN201110085510 A CN 201110085510A CN 102205619 A CN102205619 A CN 102205619A
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- screw
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- screws
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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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/64—Screws with two or more threads
- B29C48/655—Screws with two or more threads having three or more threads
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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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/585—Screws provided with gears interacting with the flow
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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 invention relates to an exhaust-type differential double-screw extruder, mainly comprising a feeder, a cylinder, screws, a machine head, a heating and cooling device, an exhaust outlet, a motor and a driving device, wherein one screw is a male rotor, and the other screw is a female rotor; at least one screw thread engaging region is arranged when the screws are combined, the screw socket number of the female rotor in the region is integral multiples of that of the male rotor, the rotating speeds of the female rotor and the male rotor are in inverse proportion to the screw socket number, and differential rotation and no interference during movement can be realized for the female rotor and the male rotor. At least one exhaust outlet is arranged on a material cylinder so as to remove moisture and other volatile components, and the screw configuration distribution meets the exhausting requirement. According to material processing requirements, screw thread sections or other forms with different leads and section shaped lines can be arranged on different sections of a charging section, a fusion section, an exhausting section and a metering section of the screws; when the screws are installed, besides at least one screw thread engaging region with differential rotation is ensured, the screws in different sections can be engaged and can be also unengaged so as to reinforce mixing or other functions. The extruder has favorable mixing, plasticizing and conveying capabilities and is suitable for processing and forming various granules, powder materials or even block materials, such as plastics, rubbers, food, explosives and the like.
Description
Technical field
Exhaust differential double screw extruder of the present invention, be widely used in industries such as oil, chemical industry, rubber, plastics, food, pharmacy, explosive and propellants, this extruder has good mixing, plasticizing, conveying and devolatilization ability, is applicable to mixing, granulation, reaction processing and the extrusion molding of multiple pellet, powder even piece material such as plastics, rubber, food and explosive.
Background technology
In industry such as oil, chemical industry, rubber, plastics, pharmacy, food, explosive and propellant, often relate to the high viscosity fluid mix, mixing effects such as shearing and plasticizing, extruder and kneader are the important equipments of realizing these effects.Double screw extruder aspect melting effect and output can be significantly better than single screw rod.For deviating from moisture and other volatile components in pellet, powder even the piece material, exhaust outlet often is set realizes devolatilization, become the exhaust double screw extruder, but melting effect is limited.
A kind of differential twin-screw kneader is provided among the patent CN201079735Y, had both had traditional kneader device to mixing, the shearing of high viscosity fluid and plastify mixing effect, had the characteristics that counter rotation twin screw extruder is extruded continuously again.In the differential twin-screw kneader course of work, two screw rods are meshing with each other.Exist the region of engagement between two screw rods,, have speed difference between spiral shell rib and screw channel, obviously strengthened mixed effect at the place, region of engagement.But the screw rod in this patent helicitic texture vertically is identical, can not adapt to the needed different helicitic textures of material different processing stages; This patent regulation male rotor number of starts is 1, and form is too single; Exhaust section is not set, and the devolatilization function is poor; And this patent is a kind of continuous kneader, can not well be applicable to the extrusion molding, granulation, mixing etc. of material.
If with the feature set of differential twin-screw kneader and exhaust double screw extruder, it is then with the obvious advantage promptly to form exhaust differential double screw extruder, has more power, thereby obviously improves exhaust, plasticate and energy-saving effect.The traditional relatively kneader of this extruder is easy and simple to handle, has good development prospect.
Summary of the invention
Exhaust differential double screw extruder of the present invention, mainly form by feeding device, machine barrel, screw rod, head, heater, exhaust apparatus, motor, transmission device, the screw rod that two engagements are arranged in inner chamber " ∞ " the type machine barrel, one is male rotor, one is female rotor, general spiral shell rib head number is many is called female rotor, and spiral shell rib head number is few is called male rotor.At least have a screw-threaded engagement district during screw combinations, the female rotor spiral shell rib head number in this district is the integral multiple of male rotor, and the rotary speed of negative and positive rotor and spiral shell rib head number are inverse ratio, can realize the differential rotation.In the screw-threaded engagement district of differential rotation, rotor section molded lines is connected in sequence by the plurality of sections curve, and negative and positive rotor end-face molded lines is corresponding mutually, and the conjugation engagement forms good engagement during differential motion, guarantee not interfere.
A female rotor can be placed on diverse location as required in two screw rods, and two screw rods can be to be arranged above and below, arrange about also can being, and can also be that the inclination mode is arranged.
In the screw-threaded engagement district of differential rotation, adjacent male helical rotors pair can be conjugation in theory, and positive conveyance ability and pressure capability are very strong.At region of engagement place, because of the very big speed difference of the different formation of screw speed, possess like this and shear and multiple effect such as stretching between the screw channel of the spiral shell rib of female rotor and screw channel and corresponding male rotor and the spiral shell rib, therefore obviously enhancing mixing and plasticizing effect.And the negative and positive rotor is meshing with each other in the process, peels off the material that is attached on the screw rod mutually, has the automatically cleaning ability.
In order better to adapt to the processing request of material, on the different sections of feeding section, melt zone, exhaust section and the metering section of screw rod, can be set to different lead and end face molded lines even change thread segment or other forms of screw rod spiral shell rib head number.The exhaust section machine barrel of extruder is provided with exhaust outlet, and the exhaust outlet device of air that runs in increases the devolatilization that exhaust outlet helps moisture and other gases, improves quality of item.Guarantee when two screw rods are installed to have at least outside the screw-threaded engagement district of a differential rotation, different sections can be engagement also can be out of mesh so that realize strengthening mixing, exhaust effect or other functions.For example, for the mixing ability of further enhancing equipment and realize stable extruding, can increase screw pin section or toothed disc etc., but not interfere must guarantee the negative and positive rotor motion time at certain section.
Description of drawings
Fig. 1 is the structural representation of exhaust differential double screw extruder
The 1-head, 2-machine barrel, 3-heating-cooling device, 4-exhaust outlet, 5-screw rod, 6-feeding device, 7-mount pad, 8-shaft coupling, 9-reduction box, 10-motor, 11-frame.
Fig. 2 is the mesh schematic representation of differential type twin-screw
Fig. 3 is for male rotor spiral shell rib head number is 1, female rotor spiral shell rib head number is 4 o'clock mesh schematic representation
Fig. 4 is 2 for male rotor spiral shell rib head number, and female rotor spiral shell rib head number is 3 o'clock a mesh schematic representation
Screw rod sectional drawing when Fig. 5 adopts screw pin for the screw mixing section with pin installing hole
Front view when Fig. 6 adopts the mesh plate element for the screw mixing section
Side view when Fig. 7 adopts the mesh plate element for the screw mixing section
Specific embodiments
Case study on implementation one
Design exhaust differential double screw extruder, screw engages such as Fig. 2 according to Fig. 1.Two screw rods 5 adopt spread patterns such as Fig. 3 in the extruder.Wherein, in the screw-threaded engagement district, male rotor spiral shell rib head number is 1, and female rotor spiral shell rib head number is 4.Pot motor is given the negative and positive rotor by reduction box 9, shaft coupling 8 with torque distribution, and the ratio of its speed is that 1/4, two male rotor rotates in the same way, and female rotor and male rotor are incorgruous rotation.Screw rod 5 assemblings are placed in the barrel 2 that is fixed in mount pad 7, have exhaust outlet 4 on the barrel 2, regulate temperature by outer dress heating-cooling device 3, and barrel 2, reduction box 9 and motor are directly installed on the frame 11.
Add material to be processed from charge door 6, material becomes molten condition by pellet or powder after Solid Conveying and Melting, compression fusion.During through exhaust outlet 4, moisture and volatilization gas in the material are discharged machine barrel via exhaust apparatus.Near head 1 mixing section is set on the screw rod, adopts the screw form with holes of settling pin among Fig. 5.Pin plays and cuts apart materials flow on the screw rod, increases the interface, by repeatedly shunting, converge, and reorientation and realize distributing and mix.Material is extruded by head 1 after passing through mixing and exhaust.
Case study on implementation two
Be similar to case study on implementation one and form exhaust differential double screw extruder.It is 2 that difference is in male rotor spiral shell rib head number, and female rotor spiral shell rib head number is 3 (Fig. 4 is seen in the differential engagement of screw rod), distributes through the speed of reduction box, and the ratio of negative and positive spinner velocity is 2/3; Screw rod adopts Fig. 6 and mesh plate form shown in Figure 7 at the mixing section near head 1, helps distributing mixing, and produces lower processing temperature.
Claims (3)
1. exhaust differential double screw extruder mainly is made up of feeding device, machine barrel, screw rod, head, heating-cooling device, exhaust outlet, motor, transmission device, it is characterized in that: two one of screw rods are male rotor, and another root is a female rotor; At least have a screw-threaded engagement district during screw combinations, the female rotor spiral shell rib head number in this district is the integral multiple of male rotor, and the rotary speed of negative and positive rotor and spiral shell rib head number are inverse ratio, can realize the differential rotation, does not interfere during motion; This extruder has good mixing, plasticizing, conveying and devolatilization ability, is applicable to the machine-shaping of multiple pellet, powder even piece material such as plastics, rubber, food and explosive.
2. exhaust differential double screw extruder according to claim 1 is characterized in that: arrange an exhaust outlet at least so that carry out moisture or other volatile components are deviate from barrel, screw configuration distributes should satisfy exhaust requirements.
3. exhaust differential double screw extruder according to claim 1, it is characterized in that: according to the material processing request, on the different sections of feeding section, melt zone, exhaust section and the metering section of screw rod, can be set to thread segment or other forms of different lead and section molded lines, guarantee to have at least outside the screw-threaded engagement district of a differential rotation when screw rod is installed, different sections can be engagement also can be out of mesh so that realize to strengthen mixing or other functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110085510XA CN102205619A (en) | 2011-04-06 | 2011-04-06 | Exhaust-type differential double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110085510XA CN102205619A (en) | 2011-04-06 | 2011-04-06 | Exhaust-type differential double-screw extruder |
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| Publication Number | Publication Date |
|---|---|
| CN102205619A true CN102205619A (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110085510XA Pending CN102205619A (en) | 2011-04-06 | 2011-04-06 | Exhaust-type differential double-screw extruder |
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| CN (1) | CN102205619A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441934A (en) * | 2011-11-10 | 2012-05-09 | 中国重型机械研究院有限公司 | Rotor type extrusion forming device |
| CN102909849A (en) * | 2012-11-13 | 2013-02-06 | 大连理工大学 | Star-shaped differential screw extruding machine |
| CN102950662A (en) * | 2012-11-29 | 2013-03-06 | 大连橡胶塑料机械股份有限公司 | Gun propellant mixing and extruding device |
| CN103360186A (en) * | 2013-05-15 | 2013-10-23 | 湖北凯龙化工集团股份有限公司 | Sensitization device used for emulsion explosive production line |
| CN103434113A (en) * | 2013-08-30 | 2013-12-11 | 广东轻工职业技术学院 | Self-cleaning type synclastic differential rotation double-screw extrusion device and method |
| CN105328813A (en) * | 2015-11-10 | 2016-02-17 | 徐州工业职业技术学院 | Method for producing environment-friendly high-strength butyl-reclaimed rubber under high-temperature and normal-pressure condition |
| CN109695568A (en) * | 2019-02-21 | 2019-04-30 | 威海智德真空科技有限公司 | The twin-screw of rotating Vortex conjugation engagement |
| CN110181853A (en) * | 2019-05-20 | 2019-08-30 | 宁波市奥特曼自动化设备有限公司 | A kind of full-automatic carbon-point extrusion shaping machine |
| CN112622251A (en) * | 2020-12-30 | 2021-04-09 | 重庆瑞霆塑胶有限公司 | Five-layer co-extrusion film blow molding machine |
| CN109695568B (en) * | 2019-02-21 | 2024-06-04 | 威海智德真空科技有限公司 | Co-rotating conjugate meshed double screw |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201483738U (en) * | 2009-08-30 | 2010-05-26 | 温州三环橡塑制品有限公司 | Double-screw extruder |
| CN202071321U (en) * | 2011-04-06 | 2011-12-14 | 北京化工大学 | Exhaust type differential speed double screw extruder |
-
2011
- 2011-04-06 CN CN201110085510XA patent/CN102205619A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201483738U (en) * | 2009-08-30 | 2010-05-26 | 温州三环橡塑制品有限公司 | Double-screw extruder |
| CN202071321U (en) * | 2011-04-06 | 2011-12-14 | 北京化工大学 | Exhaust type differential speed double screw extruder |
Non-Patent Citations (2)
| Title |
|---|
| 《橡胶技术与装备》 20090228 刘锦文，刘海霞 "双螺杆高效能橡胶混炼机及其螺杆设计" 第38页右栏第3段及第39页左栏图1及表1 1-3 第35卷, 第2期 * |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441934A (en) * | 2011-11-10 | 2012-05-09 | 中国重型机械研究院有限公司 | Rotor type extrusion forming device |
| CN102909849A (en) * | 2012-11-13 | 2013-02-06 | 大连理工大学 | Star-shaped differential screw extruding machine |
| CN102950662A (en) * | 2012-11-29 | 2013-03-06 | 大连橡胶塑料机械股份有限公司 | Gun propellant mixing and extruding device |
| CN103360186B (en) * | 2013-05-15 | 2015-06-17 | 湖北凯龙化工集团股份有限公司 | Sensitization device used for emulsion explosive production line |
| CN103360186A (en) * | 2013-05-15 | 2013-10-23 | 湖北凯龙化工集团股份有限公司 | Sensitization device used for emulsion explosive production line |
| CN103434113B (en) * | 2013-08-30 | 2015-12-23 | 中认通标检测技术研究院（北京）有限公司 | The differential in the same way rotating twin-screw extrusion device of self-clean type and method |
| CN103434113A (en) * | 2013-08-30 | 2013-12-11 | 广东轻工职业技术学院 | Self-cleaning type synclastic differential rotation double-screw extrusion device and method |
| CN105328813A (en) * | 2015-11-10 | 2016-02-17 | 徐州工业职业技术学院 | Method for producing environment-friendly high-strength butyl-reclaimed rubber under high-temperature and normal-pressure condition |
| CN105328813B (en) * | 2015-11-10 | 2017-10-31 | 徐州工业职业技术学院 | A kind of method that high-temperature pressure produces environment-friendly, high-intensity power butyl reclaimed rubber |
| CN109695568A (en) * | 2019-02-21 | 2019-04-30 | 威海智德真空科技有限公司 | The twin-screw of rotating Vortex conjugation engagement |
| CN109695568B (en) * | 2019-02-21 | 2024-06-04 | 威海智德真空科技有限公司 | Co-rotating conjugate meshed double screw |
| CN110181853A (en) * | 2019-05-20 | 2019-08-30 | 宁波市奥特曼自动化设备有限公司 | A kind of full-automatic carbon-point extrusion shaping machine |
| CN112622251A (en) * | 2020-12-30 | 2021-04-09 | 重庆瑞霆塑胶有限公司 | Five-layer co-extrusion film blow molding machine |
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Application publication date: 20111005 |