CN201471713U - Gradual change mixing type screw - Google Patents
Gradual change mixing type screw Download PDFInfo
- Publication number
- CN201471713U CN201471713U CN2009201403574U CN200920140357U CN201471713U CN 201471713 U CN201471713 U CN 201471713U CN 2009201403574 U CN2009201403574 U CN 2009201403574U CN 200920140357 U CN200920140357 U CN 200920140357U CN 201471713 U CN201471713 U CN 201471713U
- Authority
- CN
- China
- Prior art keywords
- fluxing zone
- meter
- gradual change
- footpath
- mixing
- 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
-
- 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
- B29C48/575—Screws provided with elements of a generally circular cross-section for shearing the melt, i.e. shear-ring elements
-
- 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
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
- B29C48/525—Conical screws
-
- 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
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A gradual change mixing type screw comprises a rotation head, a screw body and an outer screw thread, wherein the rotation head and the screw body are fixed together, the outer screw thread is arranged on the screw body, one end of the screw body close to the rotation head is a material inlet end, the other end of the screw body is a material discharge end, and the screw body is divided into six sections, namely, a first plastification section, a second gradual change plastification section, a third plastification section, a welding fluid mixing section, a foaming agent and material mixing section, and a mixture output section from the material inlet end to the material outlet end of the screw body. The gradual change mixing type screw has rational and compact structure and convenient use, is particularly applied in special purpose screws of a first extrusion machine of polystyrene foam plastics for insulation of supercritical carbon dioxide, the operation pressure of the extrusion machine is increased, the mixing effect of melting materials and the diffusion coefficients in supercritical carbon dioxide in materials are improved, thereby carbon dioxide can be evenly distributed in melting materials for laying a foundation for realizing green and environment-friendly foaming of polystyrene foam plastics for insulation of supercritical carbon dioxide foaming production.
Description
One, technical field
The utility model relates to the extruder bolt special, is the mixing formula screw rod of a kind of gradual change, is specially adapted to the adiabatic polystyrene foam plastics first extruder bolt special of using of supercritical carbon dioxide foam production.
Two, background technology
Usually extrusion molding polystyrene polyfoam for heat insulation first extruder screw in the foam production of fluorine Lyons is pusher screw rod, draw ratio is 30 to 1, power of motor is less, this screw rod operating pressure is little, the material fltting speed is fast, the material melting effect is poor, when being used for the supercritical carbon dioxide foaming, because first extruder is mixing and dispersion effect is relatively poor, and then influence the melting effect of second extruder, cause that the final products expansion ratio is low, product unit weight height, of poor quality, thereby lost commodity value.
Three, summary of the invention
The utility model provides a kind of gradual change mixing formula screw rod, has overcome the deficiency of above-mentioned prior art, and it can effectively solve existing pusher screw rod can't make product reach the problem of acceptable quality when being used for blown with carbon dioxide.
The technical solution of the utility model realizes by following measure: the mixing formula screw rod of a kind of gradual change, comprise rotary head, the body of rod and external screw thread, the rotary head and the body of rod are fixed together, external screw thread is arranged on the body of rod, the body of rod is a feed end near an end of rotary head, the other end of the body of rod is a discharge end, this body of rod is divided into 6 sections, is first fluxing zone, second gradual change footpath fluxing zone, the 3rd fluxing zone, melt compounded section, blowing agent and mixing of materials section and mixture deferent segment in regular turn from feed end to the discharge end of the body of rod; The footpath, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment is identical, the footpath, the end of first fluxing zone is less than the footpath, the end of the 3rd fluxing zone, the end of second gradual change footpath fluxing zone, become big gradually near first fluxing zone to close the 3rd fluxing zone without leave, second gradual change footpath fluxing zone is identical with the footpath, the end of first fluxing zone near the footpath, the end of an end of first fluxing zone, and second gradual change footpath fluxing zone is identical with the footpath, the end of the 3rd fluxing zone near the footpath, the end of an end of the 3rd fluxing zone; The end of blowing agent and mixing of materials section, become big gradually near melt compounded section to close mixture deferent segment without leave, blowing agent is identical with the footpath, the end of first fluxing zone near the footpath, the end of an end of melt compounded section with the mixing of materials section, and blowing agent is identical with the footpath, the end of mixture deferent segment near the footpath, the end of mixture deferent segment one end with the mixing of materials section.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
On at the bottom of the externally threaded tooth on above-mentioned blowing agent and the mixing of materials section backflash can be arranged.
The length of the above-mentioned body of rod can be 36 to 1 with the ratio of body of rod external diameter.
The length of the above-mentioned body of rod can be 5.4 meters, and body of rod external diameter is 0.15 meter.
The length of above-mentioned first fluxing zone can be 1.2 meters, the length of second gradual change footpath fluxing zone is 1.5 meters, and the length of the 3rd fluxing zone is 1.2 meters, and the length of melt compounded section is 0.15 meter, the length of blowing agent and mixing of materials section is 0.675 meter, and the length of mixture deferent segment is 0.675 meter.
The end of above-mentioned first fluxing zone, directly can be 0.11 meter, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment, directly be 0.135 meter, and the end of an end of close first fluxing zone of second gradual change footpath fluxing zone, directly be 0.11 meter, and second gradual change footpath fluxing zone directly is 0.135 meter near the end of an end of the 3rd fluxing zone; Blowing agent and mixing of materials section directly are 0.11 meter near the end of an end of melt compounded section, and blowing agent and mixing of materials section directly are 0.135 meter near the end of mixture deferent segment one end.
The utility model reasonable and compact in structure, easy to use, it is adiabatic with the polystyrene foam plastics first extruder bolt special to be specially adapted to the supercritical carbon dioxide foam production, it has increased the extruder operating pressure, the melting effect and the coefficient of dispersion of supercritical carbon dioxide in material of fused materials have been improved, carbon dioxide is uniformly dispersed, for blown with carbon dioxide production thermal insulation is laid a good foundation with polystyrene foam plastics realization environmental protection foaming in fused materials.
Four, description of drawings
Accompanying drawing 1 is the main TV structure schematic diagram of the utility model most preferred embodiment.
Coding in the accompanying drawing is respectively: 1 is rotary head, and 2 is the body of rod, and 3 is external screw thread, and A is first fluxing zone, B is second gradual change footpath fluxing zone, and C is the 3rd fluxing zone, and D is the melt compounded section, E is blowing agent and mixing of materials section, and F is the mixture deferent segment, and H is a body of rod external diameter.
Five, the specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, the mixing formula screw rod of this gradual change comprises rotary head 1, the body of rod 2 and external screw thread 3, the rotary head 1 and the body of rod 2 are fixed together, external screw thread 3 is arranged on the body of rod 2, the body of rod 2 is a feed end near an end of rotary head 1, the other end of the body of rod 2 is a discharge end, and this body of rod 2 is divided into 6 sections, is the first fluxing zone A, second gradual change footpath fluxing zone B, the 3rd fluxing zone C, melt compounded section D, blowing agent and mixing of materials section E and mixture deferent segment F in regular turn from feed end to the discharge end of the body of rod 2; The footpath, the end of the 3rd fluxing zone C, melt compounded section D and mixture deferent segment F is identical, the footpath, the end of the first fluxing zone A is less than the footpath, the end of the 3rd fluxing zone C, the end of second gradual change footpath fluxing zone B, extremely become big near the 3rd fluxing zone C gradually near the first fluxing zone A without leave, second gradual change footpath fluxing zone B is identical with the footpath, the end of the first fluxing zone A near the footpath, the end of the end of the first fluxing zone A, and second gradual change footpath fluxing zone B is identical with the footpath, the end of the 3rd fluxing zone C near the footpath, the end of the end of the 3rd fluxing zone C; The end of blowing agent and mixing of materials section E, extremely become big near mixture deferent segment F gradually near melt compounded section D without leave, blowing agent is identical with the footpath, the end of the first fluxing zone A near the footpath, the end of the end of melt compounded section D with mixing of materials section E, and blowing agent is identical with the footpath, the end of mixture deferent segment F near the footpath, the end of mixture deferent segment F one end with mixing of materials section E.
Can according to actual needs the mixing formula screw rod of above-mentioned gradual change be made further optimization and/or improvements:
As shown in Figure 1, at the bottom of the tooth of the external screw thread 3 on blowing agent and the mixing of materials section E backflash is arranged.
As shown in Figure 1, the length of the body of rod 2 is 36 to 1 with the ratio of body of rod external diameter H.
As shown in Figure 1, the length of the body of rod 2 is 5.4 meters, and body of rod external diameter H is 0.15 meter.
As shown in Figure 1, the length of the first fluxing zone A is 1.2 meters, the length of second gradual change footpath fluxing zone B is 1.5 meters, the length of the 3rd fluxing zone C is 1.2 meters, the length of melt compounded section D is 0.15 meter, the length of blowing agent and mixing of materials section E is 0.675 meter, and the length of mixture deferent segment F is 0.675 meter.
As shown in Figure 1, the end of the first fluxing zone A, directly be 0.11 meter, the end of the 3rd fluxing zone C, melt compounded section D and mixture deferent segment F, directly be 0.135 meter, and the end of the end of the close first fluxing zone A of second gradual change footpath fluxing zone B, directly be 0.11 meter, and second gradual change footpath fluxing zone B directly is 0.135 meter near the end of the end of the 3rd fluxing zone C; Blowing agent and mixing of materials section E directly are 0.11 meter near the end of the end of melt compounded section D, and blowing agent and mixing of materials section E directly are 0.135 meter near the end of mixture deferent segment F one end.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: seating nipple is arranged in the outside of the present utility model, during work, rotary head 1 drives the body of rod 2 and rotates, material enters in the seating nipple from feed end, pressure in the seating nipple is 16Mpa to 18Mpa, temperature is at 180 ℃ to 200 ℃, material is in operation and gradually becomes liquid, when material enters into second gradual change footpath fluxing zone B and the 3rd fluxing zone C, because it is big that the bar of the body of rod 2 footpath becomes gradually, pitch smaller between the body of rod 2 and the seating nipple, thereby material is extruded and becomes more tiny and even, but also increased propulsive force, at melt compounded section D place, liquid carbon dioxide enters in the seating nipple, mix fully with fused materials with mixing of materials section E place at blowing agent, because the end of blowing agent and mixing of materials section E, directly diminish, leave mixing space, but also be provided with backflash, make material also operation back in operation forward, thereby carbon dioxide is uniformly dispersed in fused materials, along with footpath, the end of blowing agent and mixing of materials section E becomes greatly gradually, the propulsive force of the body of rod 2 increases during to mixture deferent segment F, and mixed material is sent seating nipple.
Claims (9)
1. mixing formula screw rod of gradual change, it is characterized in that comprising rotary head, the body of rod and external screw thread, the rotary head and the body of rod are fixed together, external screw thread is arranged on the body of rod, the body of rod is a feed end near an end of rotary head, the other end of the body of rod is a discharge end, and this body of rod is divided into 6 sections, is first fluxing zone, second gradual change footpath fluxing zone, the 3rd fluxing zone, melt compounded section, blowing agent and mixing of materials section and mixture deferent segment in regular turn from feed end to the discharge end of the body of rod; The footpath, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment is identical, the footpath, the end of first fluxing zone is less than the footpath, the end of the 3rd fluxing zone, the end of second gradual change footpath fluxing zone, become big gradually near first fluxing zone to close the 3rd fluxing zone without leave, second gradual change footpath fluxing zone is identical with the footpath, the end of first fluxing zone near the footpath, the end of an end of first fluxing zone, and second gradual change footpath fluxing zone is identical with the footpath, the end of the 3rd fluxing zone near the footpath, the end of an end of the 3rd fluxing zone; The end of blowing agent and mixing of materials section, become big gradually near melt compounded section to close mixture deferent segment without leave, blowing agent is identical with the footpath, the end of first fluxing zone near the footpath, the end of an end of melt compounded section with the mixing of materials section, and blowing agent is identical with the footpath, the end of mixture deferent segment near the footpath, the end of mixture deferent segment one end with the mixing of materials section.
2. the mixing formula screw rod of gradual change according to claim 1 has backflash on it is characterized in that at the bottom of the externally threaded tooth on blowing agent and the mixing of materials section.
3. the mixing formula screw rod of gradual change according to claim 1 and 2, the length that it is characterized in that the body of rod is 36 to 1 with the ratio of body of rod external diameter.
4. the mixing formula screw rod of gradual change according to claim 3, the length that it is characterized in that the body of rod is 5.4 meters, body of rod external diameter is 0.15 meter.
5. the mixing formula screw rod of gradual change according to claim 4, the length that it is characterized in that first fluxing zone is 1.2 meters, the length of second gradual change footpath fluxing zone is 1.5 meters, the length of the 3rd fluxing zone is 1.2 meters, the length of melt compounded section is 0.15 meter, the length of blowing agent and mixing of materials section is 0.675 meter, and the length of mixture deferent segment is 0.675 meter.
6. the mixing formula screw rod of gradual change according to claim 1 and 2, the end that it is characterized in that first fluxing zone, directly be 0.11 meter, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment, directly be 0.135 meter, and the end of an end of close first fluxing zone of second gradual change footpath fluxing zone, directly be 0.11 meter, and second gradual change footpath fluxing zone directly is 0.135 meter near the end of an end of the 3rd fluxing zone; Blowing agent and mixing of materials section directly are 0.11 meter near the end of an end of melt compounded section, and blowing agent and mixing of materials section directly are 0.135 meter near the end of mixture deferent segment one end.
7. the mixing formula screw rod of gradual change according to claim 3, the end that it is characterized in that first fluxing zone, directly be 0.11 meter, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment, directly be 0.135 meter, and the end of an end of close first fluxing zone of second gradual change footpath fluxing zone, directly be 0.11 meter, and second gradual change footpath fluxing zone directly is 0.135 meter near the end of an end of the 3rd fluxing zone; Blowing agent and mixing of materials section directly are 0.11 meter near the end of an end of melt compounded section, and blowing agent and mixing of materials section directly are 0.135 meter near the end of mixture deferent segment one end.
8. the mixing formula screw rod of gradual change according to claim 4, the end that it is characterized in that first fluxing zone, directly be 0.11 meter, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment, directly be 0.135 meter, and the end of an end of close first fluxing zone of second gradual change footpath fluxing zone, directly be 0.11 meter, and second gradual change footpath fluxing zone directly is 0.135 meter near the end of an end of the 3rd fluxing zone; Blowing agent and mixing of materials section directly are 0.11 meter near the end of an end of melt compounded section, and blowing agent and mixing of materials section directly are 0.135 meter near the end of mixture deferent segment one end.
9. the mixing formula screw rod of gradual change according to claim 5, the end that it is characterized in that first fluxing zone, directly be 0.11 meter, the end of the 3rd fluxing zone, melt compounded section and mixture deferent segment, directly be 0.135 meter, and the end of an end of close first fluxing zone of second gradual change footpath fluxing zone, directly be 0.11 meter, and second gradual change footpath fluxing zone directly is 0.135 meter near the end of an end of the 3rd fluxing zone; Blowing agent and mixing of materials section directly are 0.11 meter near the end of an end of melt compounded section, and blowing agent and mixing of materials section directly are 0.135 meter near the end of mixture deferent segment one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201403574U CN201471713U (en) | 2009-08-05 | 2009-08-05 | Gradual change mixing type screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201403574U CN201471713U (en) | 2009-08-05 | 2009-08-05 | Gradual change mixing type screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201471713U true CN201471713U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201403574U Expired - Fee Related CN201471713U (en) | 2009-08-05 | 2009-08-05 | Gradual change mixing type screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201471713U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619139B (en) * | 2009-08-05 | 2012-02-22 | 新疆西龙土工新材料股份有限公司 | Method for producing extrusion molding polystyrene polyfoam for heat insulation by supercritical carbon dioxide foaming |
| CN104129058A (en) * | 2014-07-30 | 2014-11-05 | 安庆钰龙橡塑机械制造有限公司 | Rubber extruding machine screw |
| CN104626512A (en) * | 2015-02-16 | 2015-05-20 | 湖州讯腾电缆材料科技有限公司 | Foaming screw structure for plastic granulation |
| CN105922538A (en) * | 2016-05-23 | 2016-09-07 | 上海译科实业有限公司 | Extruder screw rod for polymer foaming process and extruder with screw rod |
| CN106239866B (en) * | 2016-08-31 | 2019-05-07 | 杭州奥达化纤有限公司 | Screw rod discharging device |
-
2009
- 2009-08-05 CN CN2009201403574U patent/CN201471713U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619139B (en) * | 2009-08-05 | 2012-02-22 | 新疆西龙土工新材料股份有限公司 | Method for producing extrusion molding polystyrene polyfoam for heat insulation by supercritical carbon dioxide foaming |
| CN104129058A (en) * | 2014-07-30 | 2014-11-05 | 安庆钰龙橡塑机械制造有限公司 | Rubber extruding machine screw |
| CN104626512A (en) * | 2015-02-16 | 2015-05-20 | 湖州讯腾电缆材料科技有限公司 | Foaming screw structure for plastic granulation |
| CN105922538A (en) * | 2016-05-23 | 2016-09-07 | 上海译科实业有限公司 | Extruder screw rod for polymer foaming process and extruder with screw rod |
| CN106239866B (en) * | 2016-08-31 | 2019-05-07 | 杭州奥达化纤有限公司 | Screw rod discharging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20180805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |