CN117734140A - Gradually accelerating single screw extruder with kneading blocks - Google Patents
Gradually accelerating single screw extruder with kneading blocks Download PDFInfo
- Publication number
- CN117734140A CN117734140A CN202410005622.7A CN202410005622A CN117734140A CN 117734140 A CN117734140 A CN 117734140A CN 202410005622 A CN202410005622 A CN 202410005622A CN 117734140 A CN117734140 A CN 117734140A
- Authority
- CN
- China
- Prior art keywords
- accelerating
- section
- conveying section
- screw
- kneading blocks
- 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.)
- Pending
Links
- 238000004898 kneading Methods 0.000 title claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000001133 acceleration Effects 0.000 claims abstract description 24
- 238000001125 extrusion Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a gradual acceleration type single screw extruder with kneading blocks, wherein screws are divided into three sections: the device comprises a conveying section, an accelerating mixing section and an accelerating conveying section. The accelerating mixing section consists of a kneading block, a planetary gear train with the transmission ratio of 3/2 is embedded in the accelerating mixing section, a planetary gear train with the transmission ratio of 4/3 is embedded in the accelerating conveying section, and three sections of screws realize gradual acceleration under the action of the planetary gear train. Under the addition of the kneading blocks, the materials can be fully distributed and mixed, under the addition of the planetary gear train, the speed of the kneading blocks is increased, the shearing and mixing effects are better, and the mixing efficiency of the screw extruder is improved. The speed of the conveying section is increased, the conveying capacity is enhanced, the residence time of the materials in the machine barrel is reduced, the extrusion force is increased, the pressure difference between the inlet and the outlet of the screw is increased, the materials are rapidly extruded through the larger pressure difference, and the extrusion quantity of the screw is increased. The invention has reasonable design, simple structure and good application prospect.
Description
Technical Field
The invention relates to a screw extruder, in particular to a gradually accelerating single screw extruder with kneading blocks.
Background
The most important core component in the screw extruder is screw configuration, and the single screw extruder has been widely applied in the fields of plastics, chemical industry and food due to its simple structure, convenient production and manufacture and small occupied area, but the single screw extruder has gradually come out of the market in recent years due to the fact that the performance of the double screw and multi screw extruders in terms of extrusion efficiency, mixing performance and the like is far superior to that of the single screw extruder.
Therefore, research on how to improve the mixing performance and extrusion efficiency of a single screw has extremely important practical significance for a single screw extruder, and the structure of the traditional screw extruder is changed to realize the maximum functional effect, which is certainly a problem to be solved in the technical work of the field.
Disclosure of Invention
The invention aims to provide a gradual acceleration type single screw extruder with kneading blocks, and the gradual acceleration type single screw extruder is experimentally designed to realize gradual acceleration among three sections of the screw extruder, so that materials can be fully distributed and mixed, the speed of the kneading blocks is increased under the addition of a planetary gear train, the shearing and mixing effects are better, the mixing efficiency of the screw extruder is improved, and the extrusion amount of a screw is increased.
The invention aims at realizing the following technical scheme:
a gradual acceleration type single screw extruder with kneading blocks, which comprises a conveying section, an acceleration mixing section, an acceleration conveying section and a machine barrel; the extruder is a gradually accelerating screw forming mode formed by combining three sections of screws, an accelerating mixing section is internally embedded with a planetary gear train, and an accelerating conveying section is internally embedded with the planetary gear train; the screw rod of the conveying section rotates clockwise, the accelerating mixing section is provided with a kneading block, the rotating direction of the kneading block is the same as that of the conveying section, the shape of the end face of the kneading block is consistent with that of the end face of the screw rod of the conveying section, the screw rod of the accelerating conveying section rotates clockwise, and the rotating direction of the screw rod of the accelerating conveying section is clockwise; the speed of the three-section screw rod is gradually increased under the action of the planetary gear train.
The gradually accelerating type single-screw extruder with the kneading blocks has the advantages that the rotation directions of the conveying section and the accelerating conveying section are the same, and the parameters are consistent.
The gradually accelerating single-screw extruder with the kneading blocks is characterized in that the accelerating mixing section is provided with the kneading blocks, planetary gear trains 5 with the transmission ratio of 3/2 are embedded in the accelerating mixing section, and the accelerating conveying section is embedded in planetary gear trains 6 with the transmission ratio of 4/3.
The planetary gear train consists of a sun gear, a planet gear, a gear ring and a planet carrier, wherein the sun gear is fixed, the gear ring is fixed with the inner wall of a screw, the planet carrier is connected with the former section of screw through a central shaft to obtain the rotating speed so as to enable the gear ring to rotate in an accelerating way, and the rotating speed of the latter section of screw is increased relative to the rotating speed of the former section of screw, so that gradual acceleration is realized.
The gradually accelerating type single-screw extruder with the kneading blocks can enable materials to be sufficiently sheared to improve the mixing performance of the screw extruder, and the accelerating conveying section enables the materials to be rapidly extruded to improve the screw extrusion efficiency.
The gradually accelerating type single-screw extruder with the kneading blocks is characterized in that the rotation directions of the conveying section 1 and the accelerating conveying section 3 are consistent, materials are extruded, the increase of the speed of the accelerating mixing section can ensure the increase of the extrusion force of the screw, and the extrusion performance of the screw is improved.
The accelerating single screw extruder with kneading blocks, the accelerating mixing section 2 consists of kneading blocks and the speed is increased relative to the conveying section 1, and the materials are sheared fully.
The gradually accelerating single-screw extruder with the kneading blocks has the advantages that the pressure building directions of the three-section screw components are consistent, and the materials are pushed to move towards the extrusion direction.
The invention has the advantages and effects that:
according to the invention, gradual acceleration is realized between three sections of the screw extruder, materials can be fully distributed and mixed under the addition of the kneading blocks, the speed of the kneading blocks is increased under the addition of the planetary gear train, the shearing and mixing effects are better, and the mixing efficiency of the screw extruder is improved. The speed of the conveying section is increased, the conveying capacity is enhanced, the residence time of the materials in the machine barrel is reduced, the extrusion force is increased, the pressure difference between the inlet and the outlet of the screw is increased, the materials are rapidly extruded through the larger pressure difference, and the extrusion quantity of the screw is increased.
Drawings
FIG. 1 is a block diagram of a barrel of a single screw extruder of the present invention with gradual acceleration
FIG. 2 is a schematic diagram of a combination of barrel components of a single screw extruder of the present invention with gradual acceleration;
FIG. 3 is a cross-sectional view of a barrel of a single screw extruder of the present invention with gradual acceleration;
FIG. 4 is a schematic view of screw components of a conveying section of a single screw extruder of the present invention with gradual acceleration;
FIG. 5 is a schematic diagram of the components of the embedded planetary gear train of the acceleration mixing section of the gradually accelerating single screw extruder of the present invention;
FIG. 6 is a schematic diagram of the components of the embedded planetary gear train of the acceleration conveying section of the gradually accelerating single screw extruder of the present invention;
FIG. 7 is a schematic view of the barrel components of the single screw extruder of the present invention with gradual acceleration.
The components in the figure: a conveying section 1, an accelerating conveying section 2, an accelerating conveying section 3, a machine barrel 4, a planetary gear train with a transmission ratio of 4/3, and a planetary gear train with a transmission ratio of 3/2.
The invention relates to a gradual acceleration type single screw extruder with kneading blocks, which comprises a conveying section 1, an acceleration mixing section 2, an acceleration conveying section 3 and a machine barrel 4; the single screw of the invention is divided into three sections: a conveying section 1, an accelerating mixing section 2 and an accelerating conveying section 3. The rotation directions of the conveying section and the accelerating conveying section are the same, the parameters are consistent, the accelerating mixing section consists of a kneading block, a planetary gear train 5 with the transmission ratio of 3/2 is embedded in the accelerating mixing section, and the accelerating conveying section is embedded in a planetary gear train 6 with the transmission ratio of 4/3. The planetary gear train consists of a sun gear, a planet wheel, a gear ring and a planet carrier, wherein the sun gear is fixed, the gear ring is fixed with the inner wall of a screw, and the planet carrier is connected with a previous section of screw through a central shaft to obtain the rotating speed so as to enable the gear ring to rotate in an accelerating way, so that the rotating speed of a next section of screw is increased relative to the rotating speed of the previous section of screw, and gradual acceleration is realized. The accelerated rotation kneading blocks can enable materials to be sufficiently sheared to improve the mixing performance of the screw extruder, and the accelerated conveying sections can enable the materials to be rapidly extruded to improve the screw extrusion efficiency.
The rotation directions of the conveying section 1 and the accelerating conveying section 3 are consistent, so that the materials can be extruded, the increase of the extrusion force of the screw can be ensured when the speed of the accelerating mixing section is increased, and the extrusion performance of the screw is improved.
The accelerating mixing section 2 consists of kneading blocks and the speed is increased relative to the conveying section 1, ensuring that the material is sheared sufficiently.
The pressure build-up direction of the three sections of screw components is consistent, and the material is pushed to move towards the extrusion direction. The mixing capacity is enhanced due to the increased shear rate caused by the accelerated rotation of the kneading blocks, and the pressure build-up capacity is increased and the transport capacity is enhanced due to the accelerated rotation of the conveying section.
Examples
The conveying section screw 1 rotates clockwise in a left-handed way, the conveying section 1 drives the planetary gear train 5 to rotate, and under the action of the planetary gear train 5, the speed of the accelerating mixing section 2 increases relative to the speed of the conveying section 1 and turns the same, so that the kneading blocks can fully shear mixed materials, and the mixing performance of the screw extruder is improved. The accelerating mixing section 2 which accelerates the rotation drives the planetary gear train 6 to rotate in the same direction, and under the action of the planetary gear train 6, the speed of the accelerating conveying section 3 increases relative to the speed of the accelerating mixing section 2 and rotates in the same direction, so that materials can be extruded rapidly, namely, the material residence time is reduced, and the extrusion efficiency of the screw extruder is improved.
Claims (8)
1. The gradually accelerating type single-screw extruder with the kneading blocks is characterized by comprising a conveying section (1), an accelerating mixing section (2), an accelerating conveying section (3) and a machine barrel (4), wherein the extruder is formed by combining three sections of screws to form a gradually accelerating type screw, a planetary gear train (5) is embedded in the accelerating mixing section (2), and a planetary gear train (6) is embedded in the accelerating conveying section; the screw rod (1) of the conveying section rotates clockwise, the accelerating mixing section (2) consists of kneading blocks, the rotating direction is the same as that of the conveying section (1), the end face shape of the kneading blocks is consistent with that of the screw rod of the conveying section (1), the screw rod of the accelerating conveying section (3) rotates clockwise; the speed of the three-section screw rod is gradually increased under the action of the planetary gear train.
2. A single screw extruder with kneading blocks of claim 1, wherein the conveying section and the accelerating conveying section are rotated in the same direction and are of the same parameters.
3. A single screw extruder with kneading blocks of claim 1, wherein the accelerating mixing section is provided with kneading blocks, internally embedded with a planetary gear train 5 having a gear ratio of 3/2, and the accelerating conveying section is embedded with a planetary gear train 6 having a gear ratio of 4/3.
4. The gradual acceleration type single screw extruder with kneading blocks according to claim 1, wherein the planetary gear train is composed of a sun gear, a planetary gear, a gear ring and a planetary carrier, wherein the sun gear is fixed, the gear ring is fixed with the inner wall of the screw, the planetary carrier is connected with the former section of screw through a central shaft to obtain the rotation speed so as to enable the gear ring to accelerate and rotate, and the rotation speed of the latter section of screw is increased relative to the rotation speed of the former section of screw, so that gradual acceleration is realized.
5. A progressively accelerating single screw extruder with kneading blocks according to claim 1, wherein the accelerated rotation of the kneading blocks causes the material to be sheared sufficiently to improve the mixing performance of the screw extruder and the acceleration conveying section causes the material to be extruded rapidly to improve the screw extrusion efficiency.
6. A gradually accelerating single screw extruder with kneading blocks according to claim 1, wherein the conveying section 1 and the accelerating conveying section 3 are in the same rotation direction, so that the materials are extruded, and the speed of the accelerating mixing section is increased to ensure the increase of the extrusion force of the screw and the extrusion performance of the screw.
7. A single screw extruder with kneading blocks of claim 1, wherein the accelerated mixing section 2 consists of kneading blocks and the material is sheared sufficiently with respect to the speed increase of the conveying section 1.
8. A single screw extruder with kneading blocks of claim 1, wherein the three screw elements are of uniform build-up and push material in the extrusion direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410005622.7A CN117734140A (en) | 2024-01-03 | 2024-01-03 | Gradually accelerating single screw extruder with kneading blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410005622.7A CN117734140A (en) | 2024-01-03 | 2024-01-03 | Gradually accelerating single screw extruder with kneading blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117734140A true CN117734140A (en) | 2024-03-22 |
Family
ID=90250956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410005622.7A Pending CN117734140A (en) | 2024-01-03 | 2024-01-03 | Gradually accelerating single screw extruder with kneading blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117734140A (en) |
-
2024
- 2024-01-03 CN CN202410005622.7A patent/CN117734140A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101837633B (en) | Embedded planetary-screw pulsation plasticizing exhaust extruder and method | |
| AU2015258536B2 (en) | Plasticizing delivery method and device using eccentric rotor and having pulsed volume deformation | |
| CN103056979B (en) | Based on macromolecular material continuous mixing process intensification method and the device of eccentric screw | |
| CN101879777A (en) | Homodromy nonuniform self-cleaning multi-screw rod plasticizing, exhausting and extruding device and method | |
| CN101875233A (en) | Straight conical three-screw extruder | |
| CN101875232A (en) | Conical three-screw rod extruder arranged like triangle | |
| CN100423931C (en) | Planetary screw chaos trigger extruding method and apparatus | |
| CN201678259U (en) | Variable-pitch double-screw feeding device | |
| CN117301474B (en) | Composite material chute co-extrusion device | |
| CN117734140A (en) | Gradually accelerating single screw extruder with kneading blocks | |
| CN103349941B (en) | A kind of novel double-roll granulation device | |
| CN103057089B (en) | Twin-screw extruder with specially crafted yin and yang rotor profiles | |
| CN201960728U (en) | Double screw extruder | |
| CN202212120U (en) | Conical tri-rotor continuous mixing unit with triangularly arranged rotors | |
| CN203370518U (en) | Novel double-roller-type granulating device | |
| CN104129057B (en) | What a kind of scrap rubber serialization regenerated de-connects Plasticator and process | |
| CN201217268Y (en) | Multiheaded helix fluted disc for series connected type grinding disc single-screw extruder | |
| CN102228818A (en) | Continuous mixing unit with three tapered rotors in triangular arrangement | |
| CN202180604U (en) | Combined screw | |
| CN201633185U (en) | Linear cone-shaped three-screw extruder | |
| CN203974037U (en) | A kind of plasticizing machine that de-connects of scrap rubber serialization regeneration | |
| CN201633190U (en) | Screw for triple screw extruder taking shape of Chinese character 'pin' | |
| CN203370519U (en) | Double-roller granulator | |
| CN212920354U (en) | Plastic extruder | |
| CN112549346B (en) | Variable-gap rotor for internal mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |