CN202071321U - Exhaust type differential speed double screw extruder - Google Patents
Exhaust type differential speed double screw extruder Download PDFInfo
- Publication number
- CN202071321U CN202071321U CN2011200974922U CN201120097492U CN202071321U CN 202071321 U CN202071321 U CN 202071321U CN 2011200974922 U CN2011200974922 U CN 2011200974922U CN 201120097492 U CN201120097492 U CN 201120097492U CN 202071321 U CN202071321 U CN 202071321U
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- CN
- China
- Prior art keywords
- screw
- exhaust
- section
- sections
- rotor
- Prior art date
- 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
- B29C48/50—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
- B29C48/395—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
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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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/585—Screws provided with gears interacting with the flow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to an exhaust type differential speed double screw extruder, which mainly comprises a feeding device, a cylinder, screws, a head, a heating and cooling device, an exhaust port, a motor and a transmission device, wherein one screw is a male rotor, and the other screw is a female rotor; at least one threaded engagement section is formed when the screws are combined; the number of screw flight ends of the female rotor is integer multiples of that of the screw flight ends of the male rotor at the section; the rotation speed of the female rotor and the male rotor is inversely proportional to the number of the screw flight ends; and thus, differential speed rotation can be realized, and interference is not caused during movement. At least one exhaust port is formed on a material cylinder, so that water or other volatile components can be conveniently removed; and the configuration and the distribution of the screws meet the exhaust requirements. Threaded sections with different leads and sectional lines can be arranged at different sections, namely feeding sections, melting sections, exhaust sections and metering sections, of the screws; and different sections can be engaged or not engaged apart from that at least one threaded engagement section in differential speed rotation is guaranteed during mounting of the screws, so that mixing is enhanced. The extruder has high mixing, plasticizing and conveying capacities, and is suitable for processing and shaping various granular materials, powdery materials and even blocky materials such as plastic, rubber, foods, explosive and the like.
Description
Technical field
The utility model exhaust differential double screw extruder, 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.
The utility model content
The utility model exhaust differential double screw extruder, 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 having a screw-threaded engagement section during screw combinations, is the integral multiple of male rotor at the female rotor spiral shell rib head number of this section, 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 section 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 the thread segment 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 section 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
The specific embodiment
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 having a screw-threaded engagement section during screw combinations, is the integral multiple of male rotor at the female rotor spiral shell rib head number of this engaged section, 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.
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: the thread segment that 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 section molded lines, guarantee to have at least outside the screw-threaded engagement engaged section 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200974922U CN202071321U (en) | 2011-04-06 | 2011-04-06 | Exhaust type differential speed double screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200974922U CN202071321U (en) | 2011-04-06 | 2011-04-06 | Exhaust type differential speed double screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202071321U true CN202071321U (en) | 2011-12-14 |
Family
ID=45109430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200974922U Expired - Fee Related CN202071321U (en) | 2011-04-06 | 2011-04-06 | Exhaust type differential speed double screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202071321U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205619A (en) * | 2011-04-06 | 2011-10-05 | 北京化工大学 | Exhaust-type differential double-screw extruder |
| CN103029285A (en) * | 2012-12-31 | 2013-04-10 | 浙江栋斌橡机螺杆有限公司 | Extruder |
| CN104085098A (en) * | 2014-07-11 | 2014-10-08 | 常州大学 | Threaded rod at exhaust section of exhaust type extruding machine |
| CN109776242A (en) * | 2019-01-29 | 2019-05-21 | 西安近代化学研究所 | A kind of vented single -screw extruder preparing high plastic state explosive wastewater for solvent method |
| CN115195078A (en) * | 2022-09-16 | 2022-10-18 | 扬州市兴隆塑料有限公司 | Hot melting equipment is used in processing of PVC electric power pipe |
-
2011
- 2011-04-06 CN CN2011200974922U patent/CN202071321U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205619A (en) * | 2011-04-06 | 2011-10-05 | 北京化工大学 | Exhaust-type differential double-screw extruder |
| CN103029285A (en) * | 2012-12-31 | 2013-04-10 | 浙江栋斌橡机螺杆有限公司 | Extruder |
| CN103029285B (en) * | 2012-12-31 | 2015-07-08 | 浙江栋斌橡机螺杆有限公司 | Extruder |
| CN104085098A (en) * | 2014-07-11 | 2014-10-08 | 常州大学 | Threaded rod at exhaust section of exhaust type extruding machine |
| CN109776242A (en) * | 2019-01-29 | 2019-05-21 | 西安近代化学研究所 | A kind of vented single -screw extruder preparing high plastic state explosive wastewater for solvent method |
| CN109776242B (en) * | 2019-01-29 | 2021-05-18 | 西安近代化学研究所 | Exhaust type single-screw extruder for preparing high-viscosity explosives and powders by solvent method |
| CN115195078A (en) * | 2022-09-16 | 2022-10-18 | 扬州市兴隆塑料有限公司 | Hot melting equipment is used in processing of PVC electric power pipe |
| CN115195078B (en) * | 2022-09-16 | 2022-12-09 | 扬州市兴隆塑料有限公司 | Hot melting equipment is used in processing of PVC electric power pipe |
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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: 20111214 Termination date: 20130406 |