CN217869210U - Pipeline type strong meshing extruder for PPS spinning - Google Patents
Pipeline type strong meshing extruder for PPS spinning Download PDFInfo
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- CN217869210U CN217869210U CN202221697455.XU CN202221697455U CN217869210U CN 217869210 U CN217869210 U CN 217869210U CN 202221697455 U CN202221697455 U CN 202221697455U CN 217869210 U CN217869210 U CN 217869210U
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Abstract
The utility model discloses a pipeline formula of PPS spinning usefulness meshes extruder by force. The extruder comprises a barrel and three mutually meshed screws arranged in the barrel and arranged in a parallel or triangular manner, the screws are divided into a plurality of functional areas, the functional areas are sequentially a feeding section, a melting section, a dynamic mixing section, three groups of melt pressurizing sections and an exhaust section along the axial direction of the screws, the dynamic mixing section and the melt homogenizing section, each functional area outside the barrel corresponds to one temperature control assembly, the barrel is provided with a feeding hole corresponding to the feeding section, the barrel is provided with a negative pressure pipeline corresponding to the exhaust section, and the negative pressure pipeline is provided with a negative pressure system. The utility model provides a multiple meshing district produces more shearing action, and the fuse-element fully flows the exchange on a plurality of aspect in space, reaches better plastify dispersion effect, can shorten extruder length, has reduced the dwell time of material in the extruder, has greatly avoided the thermosetting reaction, has improved the processing window of polyphenylene sulfide, reduces the process temperature, reduces the energy consumption and improves production efficiency.
Description
Technical Field
The utility model relates to a chemical fiber material preparation technical field especially relates to a pipeline formula meshing extruder by force that PPS spinning was used.
Background
Polyphenylene Sulfide (PPS) is an engineering plastic with excellent comprehensive performance, and has the advantages of good thermal stability (the thermal deformation temperature can reach more than 260 ℃), higher mechanical strength, excellent electrical performance, strong chemical corrosion resistance and the like. The melting point of PPS is about 280 ℃, the processability is good, and related products (such as sheets, pipes, films, fibers and the like) can be prepared by injection molding, compression molding, extrusion, blowing, encapsulation and the like. The PPS fiber is mainly used for preparing special function filter materials, such as cloth for a filter bag of a coal-fired boiler, cloth for a paper machine, special paper for the electronic industry, an electric insulator, an electrolytic diaphragm, a gas-liquid filter material and the like. Therefore, the preparation of the high-strength polyphenylene sulfide superfine fiber has great significance.
At present, PPS spinning usually uses a single screw extruder as a plasticizing and conveying device of the polymer. However, PPS undergoes a thermal curing reaction at a temperature above 320 ℃ which affects the processability and the quality of the product, and the PPS processing window is narrow, generally between 290 ℃ and 330 ℃. The single screw extruder is suitable for spinning materials with lower melt viscosity or low mixing requirement, and has certain limitation on spinning special fibers such as high-performance polymers and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an improve shear frequency and shearing force to the above-mentioned not enough of prior art, reduce the viscosity of high molecular weight polyphenylene sulfide fuse-element, reduced the processing temperature, improved the pipeline formula of the spinnability of polyphenylene sulfide fuse-element and meshed the extruder by force.
The utility model discloses a pipeline formula meshing extruder by force that PPS spinning was used, the extruder includes the barrel and sets up intermeshing's three screw rod is side by side or triangle-shaped and arranges in the barrel, the screw rod divide into a plurality of functional areas, is a feed zone along its axial in proper order, a melting section, three dynamic mixing sections of group, fuse-element pressurization section and exhaust section, a fuse-element homogenization section, the barrel corresponds the feed zone is equipped with the feed inlet, exhaust section and barrel, negative pressure pipeline constitute the air discharge chamber, the air discharge chamber is connected with negative pressure system.
Further, the ratio L/D =38 to 44 of the length and the outer diameter of the screw.
Furthermore, the length of the feeding section and the melting section is 6-8D, the feeding section and the melting section are composed of 6-9 forward spiral elements along the length direction of the screw assembly, the lead range is 0.75D-1.25D, and the lead gradually decreases along the melt conveying direction.
Further, the dynamic mixing section is 4D in length and is composed of 4 forward kneading block elements; the length of the forward kneading block elements was 1D, the thickness of the kneading sheet was 0.2D, and the kneading sheet stagger angles were 30 °, 45 °, 60 °, and 90 ° respectively in the melt conveying direction.
Further, the length of the melt pressing section is 0.6D and consists of 1 reverse spiral element; the lead of the reverse helical element was 0.6D.
Further, the length of the exhaust section is 5.25D, the exhaust section consists of 4 forward spiral elements, and the leads in the melt conveying direction are 1.5D, 1.25D and 1D respectively; wherein the lead is 1.5D element, the helix angle is 27.3 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.16D; the lead is 1.25D element, the helix angle is 22.8 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.12D; the lead is 1D element, the helix angle is 18.2 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.1D.
Further, the melt homogenizing section is 3.25-5.75D, the melt homogenizing section consists of 5-8 forward spiral elements, the lead range is 0.5D-1D, and the lead is gradually reduced along the melt conveying direction; the last 3 or 4 positive helical elements were all 0.5D in lead.
Further, the temperature control assembly comprises a heating block, a cooling water channel in the cylinder wall and a temperature control sensor.
The utility model discloses a pipeline formula of PPS spinning usefulness meshes extruder by force in shearing viscosity reduction, mixing quality, exhaust efficiency, energy consumption, aspects such as output all will be superior to single screw extruder, the utility model discloses the pipeline formula of using PPS spinning usefulness meshes the extruder by force and provides multiple meshing district, consequently can produce more shearing action, and fuse-element or material fully flow exchange on a plurality of aspect in space, reach better plastify dispersion effect, the pipeline formula of PPS spinning usefulness meshes the high shear of extruder by force enables the polymer plastify more fast and misce bene, can shorten extruder length, reduced the dwell time of material in the extruder, greatly avoided the thermocuring reaction, improved the processing window of polyphenylene sulfide, reduce the processing temperature, reduce the energy consumption and improve production efficiency.
The utility model discloses a pipeline formula meshing extruder has improved shear frequency and shearing force by force, reduces the viscosity of high molecular weight polyphenylene sulfide fuse-element, has reduced the processing temperature, has improved the spinnability of polyphenylene sulfide fuse-element, can realize high-strength polyphenylene sulfide superfine fiber's preparation, has realized that high molecular weight polyphenylene sulfide resin obtains polyphenylene sulfide superfine fiber through the preparation of melt spinning one-step method, provides an efficient device for high-strength polyphenylene sulfide superfine fiber's industrial production.
Drawings
Fig. 1 is a schematic structural diagram of the inside of a barrel of a pipe type strong meshing extruder for PPS spinning of the present invention;
fig. 2 is a side view of fig. 1.
1. A barrel; 2. a screw; 3. a feeding section; 4. a melting section; 5. a dynamic mixing section; 6. a melt pressurization section; 7. an exhaust section; 8. a melt homogenizing section; 9. a temperature control assembly; 10. a feed inlet; 11. a negative pressure pipeline; 12. a negative pressure system; 13. a heating block; 14. a cooling water passage.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the utility model discloses a pipeline formula meshing extruder by force that PPS spinning was used, the extruder includes barrel 1 and sets up three screw rod 2 of intermeshing in barrel 1, be side by side or triangular arrangement, screw rod 2 divide into a plurality of functional areas, be a feed zone 3 along its axial in proper order, a melting section 4, three dynamic mixing sections of group 5, three fuse-element pressurizing sections of group 6 and exhaust section 7, a fuse-element homogenization section 8, every functional area corresponds a temperature control components 9 outside the barrel 1, barrel 1 corresponds feed zone 3 and is equipped with feed inlet 10, barrel 1 corresponds exhaust section 7 and is equipped with negative pressure pipeline 11, exhaust section 7 and barrel 1, negative pressure pipeline 11 constitute the air discharge chamber, be equipped with negative pressure system 12 on the negative pressure pipeline 11.
The utility model discloses a pipeline formula strong meshing extruder that PPS spinning was used all is superior to single screw extruder in aspects such as shearing viscosity reduction, mixing quality, exhaust efficiency, energy consumption, output.
The utility model discloses a pipeline formula of PPS spinning usefulness meshes extruder by force is shearing the viscosity reduction, mix the quality, exhaust efficiency, the energy consumption, all be superior to single screw extruder in the aspect of output etc, the utility model discloses the pipeline formula of using PPS spinning usefulness meshes the extruder by force provides multiple meshing district, consequently can produce more shearing action, and fuse-element or material fully flow exchange on a plurality of aspect in space, reach better plastify dispersion effect, the pipeline formula of PPS spinning usefulness meshes the high shear of extruder by force enables faster plastify and misce bene of polymer, can shorten extruder length, reduced the dwell time of material in the extruder, greatly avoided the thermocuring reaction, improved the processing window of polyphenylene sulfide, reduce the process temperature, reduce the energy consumption and improve production efficiency.
The ratio of the length of the screw 2 to the outer diameter may be L/D =38 to 44.
The length of the feeding section and the melting section can be 6-8D, the feeding section and the melting section are composed of 6-9 forward spiral elements along the length direction of the screw assembly, the lead range is 0.75D-1.25D, and the lead gradually decreases along the melt conveying direction. In an implementable manner, the length of the feed section 3 and the melting section 4 can be 7.25D, and the feed section 3 and the melting section 4 consist of 7 forward spiral elements in the length direction of the screw 2 assembly, with a lead in the melt conveying direction of 1.25D, 1D, 0.75D, respectively. Wherein the lead is 1.25D element, the helix angle is 21.7 degrees, the depth of the helical groove is 0.15D, the thickness of the helical edge is 0.2D, and the clearance between the helical edge and the inner wall of the cylinder 1 can be 0.9mm; the lead is a 1D element, the helix angle is 17.7 degrees, the depth of a helical groove is 0.15D, the thickness of a helical edge is 0.15D, and the clearance between the helical edge and the inner wall of the cylinder 1 can be 0.9mm; the lead is 0.75D element, the helix angle is 16.0 degrees, the depth of the helical groove is 0.15D, the thickness of the helical edge is 0.12D, and the clearance between the helical edge and the inner wall of the cylinder body 1 can be 0.9mm.
Because the PPS processing temperature is higher, the longer feeding and melting section 4 is used to ensure that the materials can be completely melted and enter the dynamic mixing section 5; the continuously reduced lead can continuously compress the material melt, so that the air is fully exhausted.
In this embodiment, the dynamic mixing section 5 may be 4D in length, consisting of 4 forward kneading block elements; the length of the positive kneading block element was 1D, the thickness of the kneading pieces was 0.2D, the stagger angles of the kneading pieces were 30 °, 45 °, 60 °, 90 ° in the melt conveying direction, respectively, and the gap between the kneading pieces and the inner wall of the barrel 1 could be 0.9mm.
The melt is fully and uniformly mixed by the high-frequency mixing action of the kneading block elements, and the melt has lower viscosity.
The melt pressing section 6 may be 0.6D in length and consists of 1 reverse spiral element; the lead of the reverse spiral element is 0.6D, the helix angle is 10.8 degrees, the depth of the spiral groove is 0.15D, the thickness of the element screw edge is 0.09D, and the clearance between the screw edge and the inner wall of the cylinder body 1 can be 0.5mm.
The melt flow is limited by the reverse spiral element, so that the melt is fully mixed in the dynamic mixing section 5, and meanwhile, a melt conveying barrier is established, so that the lower melt pressure can be kept in the exhaust section 7.
The venting section 7 may have a length of 5.25D and consist of 4 forward spiral elements with a lead in the melt conveying direction of 1.5D, 1.25D, 1D, respectively. Wherein the lead is 1.5D element, the helical angle is 27.3 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.16D; the lead is 1.25D element, the helix angle is 22.8 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.12D; the lead is 1D element, the helix angle is 18.2 degrees, the depth of the helical groove is 0.15D, the thickness of the helical edge is 0.1D, and the clearance between the helical edge and the inner wall of the cylinder 1 can be 0.5mm.
The large-lead element forms a film at high frequency, so that small molecular residues in the melt are quickly removed.
The melt homogenizing section is 3.25-5.75D, the melt homogenizing section consists of 5-8 forward spiral elements, the lead range is 0.5D-1D, and the lead gradually decreases along the melt conveying direction; the last 3 or 4 positive helical elements were all 0.5D in lead. In a practical manner, the melt homogenizing section 8 can be 4D, the melt homogenizing section 8 consisting of 6 forward spiral elements with a lead in the melt conveying direction of 1D, 0.75D, 0.5D, respectively. Wherein the lead is a 1D element, the helical angle is 17.7 degrees, the depth of a helical groove is 0.15D, the thickness of a helical edge is 0.15D, and the clearance between the helical edge and the inner wall of the cylinder 1 can be 0.9mm; the lead is 0.75D element, the helix angle is 16.0 degrees, the depth of the helical groove is 0.15D, the thickness of the helical edge is 0.12D, and the clearance between the helical edge and the inner wall of the cylinder body 1 can be 0.9mm; the lead is 0.5D element, the helix angle is 9.1 degrees, the depth of the helical groove is 0.15D, the thickness of the helical edge is 0.06D, and the clearance between the helical edge and the inner wall of the cylinder 1 can be 0.9mm.
A steady melt pressure is established by the lead-tapered elements and the end repeat elements.
The temperature control assembly 9 may include a heating block 13, and a cooling water passage 14 and a temperature control sensor wound outside the cylinder 1, and the temperature inside the cylinder 1 is monitored in real time by the temperature sensor, and is controlled by the cooling water flowing inside the heating block 13 and the cooling water passage 14. For example, the temperature control assembly 9 can control the temperature of each functional zone as follows: the temperature of the feeding section is 260-290 ℃, the temperature of the melting section is 285-310 ℃, the temperature of the dynamic mixing section is 290-315 ℃, the temperature of the melt pressurizing section is 295-310 ℃ and the temperature of the exhaust section is 290-310 ℃.
The utility model discloses a when the pipeline formula of PPS spinning usefulness meshing extruder preparation PPS fibre by force, with the feeding of polyphenylene sulfide resin section the utility model discloses a melting is extruded in the extruder, and the polyphenylene sulfide superfine fiber that excels in is made in the spinning through melt-blown spinning technology.
The above is not relevant and is applicable to the prior art.
Although certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention, which is to be construed as broadly as the present invention will suggest themselves to those skilled in the art to which the invention pertains and which is susceptible to various modifications or additions and similar arrangements to the specific embodiments described herein without departing from the scope of the invention as defined in the appended claims. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like made to the above embodiments according to the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a pipeline formula of PPS spinning usefulness meshes extruder by force which characterized in that: the extruder comprises a barrel and three mutually meshed screw rods arranged in the barrel and arranged in a parallel or triangular mode, the screw rods are divided into a plurality of functional areas and sequentially comprise a feeding section, a melting section, three groups of dynamic mixing sections, a melt pressurizing section, an exhaust section and a melt homogenizing section along the axial direction of the screw rods, the barrel is provided with a feeding hole corresponding to the feeding section, the exhaust section, the barrel and a negative pressure pipeline form an exhaust chamber, and the exhaust chamber is connected with a negative pressure system.
2. The tubular strong meshing extruder for PPS spinning of claim 1, wherein: the ratio L/D = 38-44 of the length and the outer diameter of the screw.
3. The tubular strong meshing extruder for PPS spinning of claim 1, wherein: the length of the feeding section and the melting section is 6-8D, the feeding section and the melting section consist of 6-9 forward spiral elements along the length direction of the screw assembly, the lead range is 0.75D-1.25D, and the lead gradually decreases along the melt conveying direction.
4. A tubular high-engagement extruder for spinning PPS according to claim 1, wherein: the length of the dynamic mixing section is 4D and consists of 4 forward kneading block elements; the length of the forward kneading block elements was 1D, the thickness of the kneading blocks was 0.2D, and the kneading block stagger angles were 30 °, 45 °, 60 °, 90 °, respectively, in the melt conveying direction.
5. A tubular high-engagement extruder for spinning PPS according to claim 1, wherein: the length of the melt pressurizing section is 0.6D and the melt pressurizing section consists of 1 reverse spiral element; the lead of the reverse helical element was 0.6D.
6. A tubular high-engagement extruder for spinning PPS according to claim 1, wherein: the length of the exhaust section is 5.25D, the exhaust section consists of 4 forward spiral elements, and leads in the melt conveying direction are 1.5D, 1.25D and 1D respectively; wherein the lead is 1.5D element, the helical angle is 27.3 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.16D; the lead is 1.25D element, the helix angle is 22.8 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.12D; the lead is 1D element, the helix angle is 18.2 degrees, the depth of the helical groove is 0.15D, and the thickness of the helical ridge is 0.1D.
7. A tubular high-engagement extruder for spinning PPS according to claim 1, wherein: the melt homogenizing section is 3.25-5.75D, the melt homogenizing section consists of 5-8 forward spiral elements, the lead range is 0.5D-1D, and the lead gradually decreases along the melt conveying direction; the last 3 or 4 positive helical elements were all 0.5D in lead.
8. A tubular high-engagement extruder for spinning PPS according to claim 1, wherein: every the false functional area outside the barrel all is equipped with temperature control assembly, temperature control assembly include heating block, temperature control sensor and the cooling water passageway in the barrel wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221697455.XU CN217869210U (en) | 2022-06-30 | 2022-06-30 | Pipeline type strong meshing extruder for PPS spinning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221697455.XU CN217869210U (en) | 2022-06-30 | 2022-06-30 | Pipeline type strong meshing extruder for PPS spinning |
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| CN217869210U true CN217869210U (en) | 2022-11-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323506A (en) * | 2022-06-30 | 2022-11-11 | 武汉纺织大学 | Pipeline type strong meshing extruder and method for preparing PPS fiber and non-woven fabric |
| CN117090072A (en) * | 2023-08-22 | 2023-11-21 | 深圳市尚水智能股份有限公司 | Extrusion mechanism, pulping equipment and manufacturing process of extrusion mechanism |
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2022
- 2022-06-30 CN CN202221697455.XU patent/CN217869210U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115323506A (en) * | 2022-06-30 | 2022-11-11 | 武汉纺织大学 | Pipeline type strong meshing extruder and method for preparing PPS fiber and non-woven fabric |
| CN117090072A (en) * | 2023-08-22 | 2023-11-21 | 深圳市尚水智能股份有限公司 | Extrusion mechanism, pulping equipment and manufacturing process of extrusion mechanism |
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