CN211843054U - Flat double-extrusion screw - Google Patents
Flat double-extrusion screw Download PDFInfo
- Publication number
- CN211843054U CN211843054U CN202020173093.9U CN202020173093U CN211843054U CN 211843054 U CN211843054 U CN 211843054U CN 202020173093 U CN202020173093 U CN 202020173093U CN 211843054 U CN211843054 U CN 211843054U
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- section
- pitch
- melting
- feeding
- feeding section
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- 238000001125 extrusion Methods 0.000 title claims description 13
- 238000002844 melting Methods 0.000 claims abstract description 82
- 230000008018 melting Effects 0.000 claims abstract description 82
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 34
- 238000010992 reflux Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 16
- LYKJEJVAXSGWAJ-UHFFFAOYSA-N compactone Natural products CC1(C)CCCC2(C)C1CC(=O)C3(O)CC(C)(CCC23)C=C LYKJEJVAXSGWAJ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a flat two screw rods of extruding, includes the body of rod and spiral shell arris, the body of rod is the cylindricality, the spiral shell arris includes the feed section, melting section and ejection of compact section, the melting section comprises the single spiral shell arris section and the double spiral arris section of mutual discontinuity, be provided with on the double spiral arris section of being close to body of rod discharge end and be spiral helicine backward flow groove, the spiral direction of backward flow groove is opposite with the spiral shell arris direction of the body of rod, the spiral shell arris interval that is provided with the backward flow groove had both been less than the spiral shell arris interval of the arbitrary department of feed section, be less than the spiral shell arris interval of the arbitrary department of ejection of compact section again, ejection of compact section comprises the ejection of compact one section and ejection of. The utility model has the advantages that: the gas in the material can be effectively extruded, the material particles are fully eliminated, the material becomes more compact and more fully plasticized, and the material treatment effect is greatly improved.
Description
Technical Field
The utility model relates to a screw rod preparation technical field especially indicates a flat two screw rods of extruding.
Background
The original Chinese utility model patent with application number of CN201420248490.2 and name of 'an improved double screw and a flat double machine barrel thereof' of the applicant discloses an improved double screw and a flat double machine barrel thereof, which comprises a double screw and a flat double machine barrel; regular inner holes are pressed on the inner side of the double screw; the upper surface of the double-screw rod body is pressed with a screw ridge; an alloy sleeve is embedded in an inner hole of the flat double machine barrel, and the outer surface of the flat double machine barrel is made of steel; and welding alloy at the outer diameter of the screw edge of the double screw. The improved double screw and the flat double machine barrel thereof of the utility model are based on the original flat double machine barrel, the inner hole is embedded with the alloy sleeve, and the outer material can be made of cheaper steel; the abrasion loss is greatly reduced; the alloy is welded on the outer diameter of the screw edge outside the double screw, so that the abrasion loss of the double screw is reduced. However, the screw in the patent is improved only in service life after welding alloy, does not improve material handling capacity, and has the problem of unsatisfactory material handling efficiency in the actual production process, so the structure of the screw needs to be further improved.
Disclosure of Invention
The utility model aims to solve the technical problem that to above-mentioned prior art current situation and provide an energy-conserving high efficiency, the low extrusion capacity of rotational speed is big, and material treatment efficiency is high, the effectual flat pair of screw rod of extruding of melting.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: this flat two screw rods of extruding, including the body of rod and the spiral shell arris of setting on the body of rod, the body of rod is the cylindricality, the spiral shell arris includes the feeding section, melting section and ejection of compact section, its characterized in that: the melting section comprises the single spiral shell arris section and the two spiral shell arris sections of mutual discontinuity, is provided with on the two spiral shell arris sections of being close to the body of rod discharge end to be provided with and is spiral helicine backward flow groove, the screw direction of backward flow groove is opposite with the spiral shell arris direction of the body of rod, and the spiral shell arris interval that is provided with the backward flow groove both is less than the spiral shell arris interval of the arbitrary department of feeding section, is less than the spiral shell arris interval of the arbitrary department of ejection of compact section again, the ejection of compact section comprises the ejection of compact one section that is interrupted each other and ejection of compact two-stage section, and the pitch of one.
As an improvement, the length of the thread section provided with the screw edge on the rod body is 4000-4160 mm, the diameter of the screw is 100-130 mm, the length of the backflow groove is 330-370 mm, the distance between the deepest part of the backflow groove and the outer surface of the rod body is 3-6 mm, and the opening width of the backflow groove is 20-28 mm.
The melting section comprises a melting section, a melting section and a melting section, the melting section is the single spiral edge section, the double spiral edge section consists of the melting section and the melting section which are mutually interrupted, the reflux groove is arranged on the melting section, the interruption distance between the melting section and the melting section is 15-25 mm, and the interruption distance between the melting section and the melting section is 15-25 mm.
The improved structure is characterized in that the number of the backflow grooves is four, the four backflow grooves are distributed on the two melting sections at equal intervals, the radial cross section of each backflow groove is semicircular, and the radius of each backflow groove is 12 mm.
The method is further improved, the inclination angle of the screw ridge of the melting section is 6-10 degrees, the length of the melting section is 400-460 mm, the length of the melting section is 100-130 mm, the width of the melting section is 18-20 mm, the width of the melting section is 16-18 mm, the width of the melting section is 14-16 mm, the screw pitch of the melting section is 50-55 mm, the screw pitch of the melting section is 45-50 mm, and the screw pitch of the melting section is 40-45 mm.
As an improvement, the pitch of the ridges provided with the backflow grooves is 48mm, the minimum pitch of the ridges of the feeding section is 55mm, and the minimum pitch of the ridges of the discharging section is 49 mm.
As an improvement, the diameter of the rod body is 60-75 mm.
The improved structure comprises a feeding section, a feeding section and a feeding section, wherein the feeding section comprises a feeding section, a feeding section and a feeding section, the feeding section is connected with the feeding section end to end, the feeding section is arranged between the feeding section and the feeding section end to end in a discontinuous mode, the discontinuous distance between the feeding section and the feeding section is 15-25 mm, the length of the feeding section is 420-480 mm, the length of the feeding section is 320-380 mm, the length of the feeding section is 380-440 mm, and the discontinuous distance between the melting section and the feeding section is 15-25.
The method is further improved, the pitch of the first feeding section is 75-95 mm, the pitch of the second feeding section is 65-85 mm, the pitch of the third feeding section is 55-75 mm, the pitch of the fourth feeding section is 45-65 mm, the pitch of the first feeding section, the second feeding section, the pitch of the third feeding section and the pitch of the fourth feeding section are sequentially reduced, the pitch of the first feeding section is 25-45 mm, the pitch of the second feeding section is 20-40 mm, the pitch of the third feeding section is 15-35 mm, the pitch of the fourth feeding section is 10-30 mm, the pitch of the first feeding section is 2-5 degrees, the pitch of the second feeding section is 2-5 degrees, the pitch of the third feeding section is 6-10 degrees, and the pitch of the fourth feeding section is 6-10 degrees.
The improved structure is characterized in that the length of the first discharging section is 500-580 mm, the length of the second discharging section is 800-880 mm, the distance between the first discharging section and the second discharging section is 15-25 mm, the pitch of the first discharging section is 80-100 mm, the pitch of the second discharging section is 40-60 mm, the width of the first discharging section is 25-35 mm, the width of the second discharging section is 10-20 mm, and the inclination angle of the discharging section is 9-13.
Compared with the prior art, the utility model has the advantages of: the reflux tank accelerates the material reflux of the melting section, so that the materials are further uniformly mixed, the heat exchange of the materials is more sufficient, and the heat balance of the materials is achieved; the length-diameter ratio of the screw is 32-40, and the length-diameter ratio of the common screw is 28-30, so that the screw is generally 460-1160 mm longer than the conventional screw, and materials can stay on the screw for a longer time under the condition of the same rotating speed; particularly, the length of the melting section and the length of the discharging section are increased, the pitch of the screw with the backflow groove is smaller than the pitch of the screw at any position of the feeding section and smaller than the pitch of the screw at any position of the discharging section, the pitch of the discharging section is larger than that of the discharging section, and the pitch can change the pressure applied to the material, so that the structure of the screw can enable the material to continuously bear the changed pressure while flowing forwards; in addition, compared with the common screw, the volume is increased, the yield is improved from 650kg/h to 800-1200 kg/h, the power of the main motor and the heating power are not synchronously increased along with the increase of the yield, and the effects of high efficiency and energy conservation are achieved.
Drawings
Fig. 1 is a front perspective view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line F-F of FIG. 1;
FIG. 3 is a radial cross-sectional view of a section of the feed material of FIG. 1;
FIG. 4 is a radial cross-sectional view of the feed two-stage of FIG. 1;
FIG. 5 is a radial cross-sectional view of the feed three sections of FIG. 1;
FIG. 6 is a radial cross-sectional view of the four sections of the feed of FIG. 1;
FIG. 7 is a radial cross-sectional view of the fused segment of FIG. 1;
fig. 8 is a radial cross-section of the tapping section of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 8, the flat double-extrusion screw rod of this embodiment, including body of rod 1 and the spiral arris of setting on body of rod 1, body of rod 1 is the cylindricality, the spiral arris includes feeding section a, melting section B and ejection of compact section C, melting section B comprises the single spiral arris section and the double spiral arris section of mutual discontinuity, be provided with on the double spiral arris section of being close to the body of rod discharge end and be spiral helicine backflow groove 11, the spiral direction of backflow groove 11 is opposite with the spiral arris direction of the body of rod, the spiral arris interval that is provided with backflow groove 11 both is less than the spiral arris interval of feeding section a arbitrary department, be less than the spiral arris interval of ejection of compact section C arbitrary department again, ejection of compact section C comprises one section C1 and two sections C2 of mutual discontinuity, one section pitch L8 of ejection of compact is greater than the pitch L9 of ejection of compact. The length L0 of the thread section provided with the thread ridge on the rod body is 4000-4160 mm, the diameter D0 of the screw is 100-130 mm, the length S5 of the backflow groove is 330-370 mm, the distance H between the deepest part of the backflow groove and the outer surface of the rod body is 3-6 mm, and the opening width S6 of the backflow groove is 20-28 mm.
The melting section B comprises a melting section B1, a melting section B2 and a melting section B3, the melting section B3 is a single spiral edge section, the double spiral edge section comprises a melting section B1 and a melting section B2 which are mutually interrupted, the reflux groove 11 is arranged on the melting section B2, the interruption distance S3 between the melting section B1 and the melting section B2 is 15-25 mm, and the interruption distance S4 between the melting section B and the melting section is 15-25 mm. The number of the return grooves 11 is four, the four return grooves 11 are distributed on the melting section B2 at equal intervals, the radial section of each return groove 11 is semicircular, and the radius of each return groove 11 is 12 mm. The inclination angle e1 of the melting section screw rib is 6-10 degrees, the length of the melting section B1 is 400-460 mm, the length of the melting section B2 is 400-460 mm, the length of the melting section B3 is 100-130 mm, the width T5 of the melting section screw rib is 18-20 mm, the width T6 of the melting section screw rib is 16-18 mm, the width T7 of the melting section screw rib is 14-16 mm, the pitch L5 of the melting section is 50-55 mm, the pitch L6 of the melting section is 45-50 mm, and the pitch L7 of the melting section screw rib is 40-45 mm. The pitch of the ridges provided with the reflux grooves 11 is 48mm, the minimum pitch of the ridges of the feeding section A is 55mm, and the minimum pitch of the ridges of the discharging section A is 49 mm. The rod body diameter D1 is 60-75 mm.
The feeding section A comprises a feeding section A1, a feeding section A2, a feeding section A3 and a feeding section A4, the feeding section A1 is connected with the feeding section A2 end to end, the feeding section A3 is connected with the feeding section A4 end to end, the feeding section A2 and the feeding section A3 are arranged in a discontinuous mode, the discontinuous distance S1 between the feeding section A2 and the feeding section A3 is 15-25 mm, the length of the feeding section A1 is 420-480 mm, the length of the feeding section A2 is 320-380 mm, the length of the feeding section A3 is 380-440 mm, the length of the feeding section A4 is 380-440 mm, and the discontinuous distance S2 between the melting section B1 and the feeding section A4 is 15-25 mm. The screw pitch L1 of the feeding first section is 75-95 mm, the screw pitch L2 of the feeding second section is 65-85 mm, the screw pitch L3 of the feeding third section is 55-75 mm, the screw pitch L4 of the feeding fourth section is 45-65 mm, the screw widths of the feeding first section A1, the feeding second section A2, the feeding third section A3 and the feeding fourth section A4 are sequentially reduced, the screw width T1 of the feeding first section is 25-45 mm, the screw width T2 of the feeding second section is 20-40 mm, the screw width T3 of the feeding third section is 15-35 mm, the screw width T4 of the feeding fourth section is 10-30 mm, the screw inclination e3 of the feeding first section is 2-5 degrees, the screw inclination e4 of the feeding second section is 2-5 degrees, the screw inclination e5 of the feeding third section is 6-10 degrees, and the screw inclination e6 of the feeding fourth section is 6-10 degrees.
The length of the first discharging section C1 is 500-580 mm, the length of the second discharging section C2 is 800-880 mm, the spacing distance S7 between the first discharging section and the second discharging section is 15-25 mm, the screw pitch L8 of the first discharging section is 80-100 mm, the screw pitch L9 of the second discharging section is 40-60 mm, the screw ridge width T8 of the first discharging section is 25-35 mm, the screw ridge width T9 of the second discharging section is 10-20 mm, and the screw ridge inclination angle e2 of the discharging section is 9-13 degrees.
Claims (10)
1. The utility model provides a flat two screw rods that extrude, includes the body of rod (1) and sets up the spiral shell arris on the body of rod (1), the body of rod (1) is the cylindricality, the spiral shell arris includes feed section (A), melting section (B) and ejection of compact section (C), its characterized in that: melting section (B) comprises the single spiral shell arris section of mutual discontinuity and two spiral shell arris sections, is provided with on the two spiral shell arris sections of being close to the body of rod discharge end and is spiral helicine guiding gutter (11), the spiral direction of guiding gutter (11) is opposite with the spiral shell arris direction of the body of rod, and the spiral shell arris interval that is provided with guiding gutter (11) both is less than the spiral shell arris interval of the arbitrary department of feeding section (A), is less than the spiral shell arris interval of the arbitrary department of discharge section (C) again, discharge section (C) comprises one section (C1) of the ejection of compact that is interrupted each other and ejection of compact two-stage section (C2), and one section pitch (L8) of the ejection of compact is greater than pitch (L9) of the ejection of compact two-stage, the.
2. The flat twin extrusion screw of claim 1, wherein: the length (L0) of a thread section provided with a thread ridge on the rod body is 4000-4160 mm, the diameter (D0) of the screw is 100-130 mm, the length (S5) of the backflow groove is 330-370 mm, the distance (H) between the deepest part of the backflow groove and the outer surface of the rod body is 3-6 mm, and the opening width (S6) of the backflow groove is 20-28 mm.
3. The flat twin extrusion screw of claim 2, wherein: the melting section (B) comprises a melting section (B1), a melting section (B2) and a melting section (B3), the melting section (B3) is the single spiral edge section, the double spiral edge section is composed of the melting section (B1) and the melting section (B2) which are mutually interrupted, the backflow groove (11) is arranged on the melting section (B2), the interruption distance (S3) between the melting section (B1) and the melting section (B2) is 15-25 mm, and the interruption distance (S4) between the melting section and the melting section is 15-25 mm.
4. The flat twin extrusion screw of claim 3, wherein: the number of the backflow grooves (11) is four, the four backflow grooves (11) are distributed on the two melting sections (B2) at equal intervals, the radial section of each backflow groove (11) is semicircular, and the radius of each backflow groove (11) is 12 mm.
5. The flat twin extrusion screw of claim 3, wherein: the inclination angle (e1) of the melting section is 6-10 degrees, the length of the melting section (B1) is 400-460 mm, the length of the melting section (B2) is 400-460 mm, the length of the melting section (B3) is 100-130 mm, the width (T5) of the melting section (A) is 18-20 mm, the width (T6) of the melting section (A) is 16-18 mm, the width (T7) of the melting section (A) is 14-16 mm, the pitch (L5) of the melting section (A) is 50-55 mm, the pitch (L6) of the melting section (A) is 45-50 mm, and the pitch (L7) of the melting section (A) is 40-45 mm.
6. The flat twin extrusion screw according to any one of claims 1 to 5, wherein: the pitch of the ridges provided with the reflux grooves (11) is 48mm, the minimum pitch of the ridges of the feeding section (A) is 55mm, and the minimum pitch of the ridges of the discharging section is 49 mm.
7. The flat twin extrusion screw according to any one of claims 1 to 5, wherein: the rod body diameter (D1) is 60-75 mm.
8. The flat twin extrusion screw of any one of claims 3 to 5, wherein: the feeding section (A) comprises a feeding section (A1), a feeding section (A2), a feeding section (A3) and a feeding section (A4), the feeding section (A1) is connected with the feeding section (A2) end to end, the feeding section (A3) is connected with the feeding section (A4) end to end, the feeding section (A2) and the feeding section (A3) are arranged discontinuously, the discontinuous distance (S1) between the feeding section and the feeding section is 15-25 mm, the length of the feeding section (A1) is 420-480 mm, the length of the feeding section (A2) is 320-380 mm, the length of the feeding section (A3) is 380-440 mm, the length of the feeding section (A4) is 380-440 mm, and the discontinuous distance (S2) between the melting section (B1) and the feeding section (A4) is 15-25 mm.
9. The flat twin extrusion screw of claim 8, wherein: the pitch (L1) of the first feeding section is 75-95 mm, the pitch (L2) of the second feeding section is 65-85 mm, the pitch (L3) of the third feeding section is 55-75 mm, the pitch (L4) of the fourth feeding section is 45-65 mm, the pitch (A1) of the first feeding section, the pitch (A2) of the second feeding section, the pitch widths of the third feeding section (A3) and the fourth feeding section (A4) are sequentially reduced, the pitch width (T1) of the first feeding section is 25-45 mm, the pitch width (T2) of the second feeding section is 20-40 mm, the pitch width (T3) of the third feeding section is 15-35 mm, the pitch width (T4) of the fourth feeding section is 10-30 mm, the pitch angle (e3) of the first feeding section is 2-5 °, the pitch angle (e4) of the second feeding section is 2-5 mm, the pitch angle (e5) of the third feeding section is 6-10 ° and the pitch angle (896-6 ° of the fourth feeding section is 36 °.
10. The flat twin extrusion screw of any one of claims 1 to 5, wherein: the length of the first discharging section (C1) is 500-580 mm, the length of the second discharging section (C2) is 800-880 mm, the spacing distance (S7) between the first discharging section and the second discharging section is 15-25 mm, the screw pitch (L8) of the first discharging section is 80-100 mm, the screw pitch (L9) of the second discharging section is 40-60 mm, the screw ridge width (T8) of the first discharging section is 25-35 mm, the screw ridge width (T9) of the second discharging section is 10-20 mm, and the screw ridge inclination angle (e2) of the second discharging section is 9-13 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173093.9U CN211843054U (en) | 2020-02-15 | 2020-02-15 | Flat double-extrusion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173093.9U CN211843054U (en) | 2020-02-15 | 2020-02-15 | Flat double-extrusion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211843054U true CN211843054U (en) | 2020-11-03 |
Family
ID=73247787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020173093.9U Expired - Fee Related CN211843054U (en) | 2020-02-15 | 2020-02-15 | Flat double-extrusion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211843054U (en) |
-
2020
- 2020-02-15 CN CN202020173093.9U patent/CN211843054U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |