CN212445884U - Rotor of internal mixer - Google Patents
Rotor of internal mixer Download PDFInfo
- Publication number
- CN212445884U CN212445884U CN202021148348.2U CN202021148348U CN212445884U CN 212445884 U CN212445884 U CN 212445884U CN 202021148348 U CN202021148348 U CN 202021148348U CN 212445884 U CN212445884 U CN 212445884U
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- rotor
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- 229920001971 elastomer Polymers 0.000 claims abstract description 48
- 239000005060 rubber Substances 0.000 claims abstract description 48
- 238000010008 shearing Methods 0.000 claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 claims description 11
- 238000002156 mixing Methods 0.000 abstract description 33
- 239000000463 material Substances 0.000 abstract description 26
- 239000006229 carbon black Substances 0.000 abstract description 12
- 239000006185 dispersion Substances 0.000 abstract description 10
- 238000004513 sizing Methods 0.000 abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 3
- 241001441571 Hiodontidae Species 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000002444 silanisation Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 13
- 238000003756 stirring Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
- B29B7/186—Rotors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model belongs to the technical field of rubber and plastic mechanical equipment, in particular to an internal mixer rotor, the helical angle is increased at the first long edge, the first short edge, the second long edge and the second short edge, the circumferential flow of sizing material is changed, the length of the first long edge and the second long edge reaches half of the helical lead, and the internal mixer rotor has better axial movement performance and is beneficial to the distribution and dispersion of filler and compounding agent; along with the shearing temperature rise and the reduction of the Mooney drilling degree of the rubber material, the widened first long edge, the widened first short edge, the widened second long edge and the widened second short edge ensure the sufficient shearing performance with the inner wall of the internal mixer, enhance the stretching effect of the rubber material and are more beneficial to the sufficient flowing and dispersing of the rubber material; the convex first long edge, the convex first short edge, the convex second long edge, the convex second short edge and the convex large helical angle are more suitable for the silanization reaction of the white carbon black in the sizing material formula, the reaction is promoted, and the mixing efficiency is improved.
Description
The technical field is as follows:
the utility model belongs to the technical field of the rubber and plastic mechanical equipment, concretely relates to banbury mixer rotor is applicable to the banbury mixer that white carbon black reaction formula is mixed.
Background art:
the rubber industry has a history of more than 160 years, and rubber products are closely related to the life of people, so that the life of people is greatly facilitated. The quality of the mixed rubber in the rubber industry determines the quality of subsequent rubber products, and the mixing process is particularly important in the rubber industry and is a core link of the rubber industry. The mixing process is the basic and core link of the rubber product forming and processing technology, the quality of the rubber product is established on the basis of the quality of the mixed rubber, the mixing equipment determines the quality of the mixed rubber, and the mixing equipment is particularly important in the mixing process.
The internal mixer for mixing is a machine which is equipped with a pair of rotors with specific shapes and relatively rotating and can be used for plasticating and mixing polymer material in a clearance mode under the closed state of adjustable temperature and pressure, and is mainly formed from internal mixing chamber, rotor sealing device, feeding and pressing device, discharging device, driving device and machine base, etc. and can be used for plasticating and mixing rubber. The rotor is the core component of the internal mixer, in the mixing process, the action is generated between the rubber materials, between the rubber materials and the internal mixing chamber and between the rubber materials and the rotor mainly through the rotation of the rotor, and the rubber materials are continuously subjected to strong shearing, extrusion, friction and other actions in the process, so that the purpose of mixing is achieved. The development of the internal mixer is mostly carried out around a rotor configuration, the development of the internal mixer can be regarded as the development of the rotor, the rotor configuration of the internal mixer commonly used in the world at present comprises a shearing rotor and a meshing rotor, and in addition, rotor configurations with both shearing action and meshing action are also appeared.
The mixing of the shearing type rotor to the rubber material mainly occurs between the wall of the internal mixing chamber and the working edge of the rotor, the shearing, stretching and the like of the rubber material are mixed by the rotor, the mixing efficiency and the quality of the mixed rubber are improved, but the shearing type rotor has higher yield when being made into a general formula, faces to the improvement of various high polymer materials and processing techniques and requirements, and is limited in application. The meshed rotors finish the mixing of rubber materials by meshing of the two rotors, and compared with the shearing rotors, the meshed rotors have the characteristics of longer mixing time, slow temperature rise, slow material feeding and the like.
The rotor of the internal mixer disclosed in the chinese patent 201920111247.9 includes two rotating shafts, the two rotating shafts are divided into a first connecting area, a feeding area, a first mixing area, a second mixing area, a third mixing area and a second connecting area, the two feeding areas are provided with first spiral pieces, the two first spiral pieces have opposite rotating directions and are engaged with each other; a first stirring sheet and a second stirring sheet which are spiral and have opposite rotation directions are arranged on one of the first mixing areas, a first edge and a second edge are formed at the intersection of the first stirring sheet and the second stirring sheet, and the first edge and the second edge are staggered with each other; a third stirring sheet and a fourth stirring sheet which are spiral and have opposite rotation directions are arranged on the other first mixing area, a third edge and a fourth edge are formed at the intersection of the third stirring sheet and the fourth stirring sheet and are staggered with each other, the first stirring sheet and the third stirring sheet are opposite and have opposite rotation directions, and when the two rotating shafts are positioned at the initial positions, the top point of the first edge and the third edge are distributed at 90 degrees; the third mixing area has the same structure as the first mixing area; the two second mixing areas are both provided with second spiral plates, and the two second spiral plates are distributed at intervals and have opposite rotation directions; the rotor of the internal mixer disclosed in the chinese patent 201720441057.4 comprises an upper rotor shaft, an upper double-lead screw groove, an upper blade, an upper screw blade, a lower rotor shaft, a lower double-lead screw groove, a lower blade, and a lower screw blade, wherein a certain distance is provided between the upper rotor shaft and the lower rotor shaft, the left outer peripheral wall of the upper rotor shaft is fixedly provided with the upper double-lead screw groove, the left outer peripheral wall of the lower rotor shaft is fixedly provided with the lower double-lead screw groove, the middle of the upper rotor shaft is provided with the upper blade, the middle position of the lower rotor shaft is provided with the lower blade, the upper blade is in contact with the lower blade, the right outer peripheral wall of the upper rotor shaft is provided with the upper screw blade, and the right outer peripheral wall of the lower rotor shaft is provided with the lower; the novel internal mixer rotor body disclosed in the chinese patent 201720296053.1 comprises a rotor body, the rotor body comprises a roller, both ends of the roller are respectively and fixedly mounted with a left baffle and a right baffle, the left side of the left baffle is fixedly mounted with a left rotating cylinder, the right side of the right baffle is fixedly mounted with a right rotating cylinder, the upper side and the lower side of the outer surface of the roller are integrally formed with lug bosses of a circular truncated cone shape, the left side and the right side of the outer surface of the roller are integrally formed with connecting edges which are obliquely arranged, the outer surface of the connecting edges is provided with uniformly distributed grooves, gaps are left between every two connecting edges, fixing blocks which are integrally formed with the roller are arranged in the gaps, and the outer side of the connecting edges is provided with a convex edge which is integrally formed with the roller; the rotor of the internal mixer disclosed in the Chinese patent 201610644380.1 comprises a rotor shaft, wherein a conveying section and a thread section are arranged on the rotor shaft, a double-lead screw groove is arranged on the conveying section, and the inclined plane inclination angle of the screw fillet angle of the thread section is 3-30 degrees; the double-lead screw groove comprises a first screw groove and a second screw groove, and the first screw groove and the second screw groove are S-shaped and are arranged in a mutually crossed manner; the spiral fillet comprises a first inclined plane right facing the feeding direction and a second inclined plane right facing the discharging direction, the top ends of the first inclined plane and the second inclined plane extend obliquely towards the feeding direction, and the inclination angle alpha of the first inclined plane is smaller than the inclination angle beta of the second inclined plane.
The above-mentioned patent products and prior art rotors suffer from the problem of low shear in the rubber compound when producing high white carbon black formulations. Therefore, the rotor of the internal mixer is designed and developed, and the characteristics of both shearing type rotors and meshing type rotors are utilized by utilizing the widened rotor edges and the increased spiral angles so as to carry out reactive mixing of the white carbon black.
The invention content is as follows:
an object of the utility model is to overcome the shortcoming that prior art exists, seek to design an internal mixer rotor to showing the shearing force that improves the elastomeric compound, and then promoting the mobility of sizing material and the dispersibility of packing in the sizing material.
In order to achieve the purpose, the rotor of the internal mixer provided by the utility model is a shearing synchronous rotor, and the main structure of the internal mixer comprises a rotor body, a left rubber baffle, a right rubber baffle, a first long edge, a first short edge, a second long edge and a second short edge; the left end of rotor block is provided with a left side and keeps off the offset plate, and the right-hand member of rotor block is provided with a right side and keeps off the offset plate, is provided with first long arris, first short arris, the long arris of second and the short arris of second on the rotor block, and first long arris and first short arris keep off the offset plate from a left side and extend to middle spiral, and the long arris of second and the short arris of second extend to middle spiral from a right side fender offset plate.
The utility model relates to a rotor block is cylindrical structure, and first long arris, first short arris, the long arris of second and the short arris of second set up on the base circle surface circumference of rotor block.
The rotating directions of the first long edge and the second long edge related by the utility model are opposite and symmetrical about the center; the first short edge and the second short edge have opposite rotating directions and are symmetrical about the center; the helix angle beta of the first long edge and the second long edge1And the helix angle beta of the first short edge and the second short edge2Both 50 ° ± 10 °, such that the length of the first long edge and the second long edge is 1/2 of the helical lead of the first long edge and the second long edge, and the length of the first short edge and the second short edge is 1/4 of the helical lead of the first short edge and the second short edge; the phase difference between the first long edge and the first short edge, the phase difference between the first long edge and the second long edge at the starting end and the phase difference between the second long edge and the second short edge are all 180 degrees +/-10 degrees; the angles occupied by the widths of the first long edge, the first short edge, the second long edge and the second short edge are the width angle alpha, and the width angle alpha is 30 degrees +/-10 degrees so as to form the bump.
The utility model relates to an internal mixer rotor, on the axial cross section of rotor block, the radius of curvature of front peak face is 60 degrees +/-10 degrees, the radius of curvature of back peak face is 50 degrees +/-10 degrees, the radius of curvature of front peak face is greater than the radius of curvature of back peak face, can guarantee the good ability of eating to glue; when the length ratio of the first long edge to the second long edge to the first short edge to the second short edge is 1:2, the balance between the axial force and the circumferential force can be ensured.
The utility model relates to an internal mixer rotor has assembled "narrow clearance theory" and the advantage of "wide big clearance theory" on same rotor, and "narrow clearance theory" and "wide big clearance theory" are by accounting for a honest and bright influence and the dispersion thing that are mixed based on the clearance of internal mixer rotor arris point and inner wall are different, and rotor and internal mixer wall clearance just inequality to its mixing sizing material effect reachs.
Compared with the prior art, the utility model, following advantage has: 1. the spiral angles are increased at the first long edge, the first short edge, the second long edge and the second short edge, the circumferential flow of the rubber material is changed, the lengths of the first long edge and the second long edge reach half of the spiral lead, the axial movement performance is better, and the distribution and dispersion of the filler and the compounding agent are facilitated; 2. along with the shearing temperature rise and the reduction of the Mooney drilling degree of the rubber material, the widened first long edge, the widened first short edge, the widened second long edge and the widened second short edge ensure the sufficient shearing performance with the inner wall of the internal mixer, enhance the stretching effect of the rubber material and are more beneficial to the sufficient flowing and dispersing of the rubber material; 3. the convex first long edge, the convex first short edge, the convex second long edge, the convex second short edge and the convex large helical angle are more suitable for the silanization reaction of the white carbon black in the sizing material formula, the reaction is promoted, and the mixing efficiency is improved.
Description of the drawings:
fig. 1 is a schematic diagram of the main structure principle of the present invention.
Fig. 2 is a front view of the main structure of the present invention.
Fig. 3 is a sectional view of the main structure of the present invention.
Fig. 4 is an expanded view of the first long rib, the first short rib, the second long rib, and the second short rib according to the present invention.
Fig. 5 is a column comparison graph of the tensile strength of the rotor rubber compound of the internal mixer and the conventional four-edge synchronous rotor rubber compound.
FIG. 6 is a bar chart showing the tear strength of the rotor rubber compound of the internal mixer and the conventional four-edge synchronous rotor rubber compound.
The specific implementation mode is as follows:
the invention will be further described by means of an embodiment example in conjunction with the accompanying drawings.
Example 1:
the rotor of the internal mixer related to the embodiment is a shearing type synchronous rotor, and the main structure of the internal mixer comprises a rotor body 1, a left rubber baffle 2, a right rubber baffle 3, a first long edge 4, a first short edge 5, a second long edge 6 and a second short edge 7; the left end of the rotor body 1 of cylindrical structure is provided with left fender offset 2, and the right-hand member of rotor body 1 is provided with right fender offset 3, is provided with first long arris 4, first short arris 5, second long arris 6 and second short arris 7 on the base circle surface circumference of rotor body 1, and first long arris 4 and first short arris 5 extend to middle spiral from left fender offset 2, and second long arris 6 and second short arris 7 extend to middle spiral from right fender offset 3.
The present embodiment relates to the helix angle β of the first long ridge 4 and the second long ridge 61And the helix angle beta of the first short edge 5 and the second short edge 72Are all 50 degrees; the phase difference between the first long edge 4 and the first short edge 5, the phase difference between the first long edge 4 and the second long edge 6 at the start end, and the phase difference between the second long edge 6 and the second short edge 7 are all 180 degrees; the first long edge 4, the first short edge 5, the second long edge 6 and the second short edge 7 have a width angle α of 30 °; the radius of curvature of the front peak surface 8 is 60 ° and the radius of curvature of the rear peak surface 9 is 50 °.
The banbury mixer rotor that this embodiment relates to carries out contrast experiment to the dispersion distribution influence of sizing material, installs the banbury mixer rotor of this embodiment and conventional four-edge synchronous rotor respectively on the banbury mixer and mixes, and mixing technology is: setting the rotating speed to 80r/min, and adopting a constant-temperature rubber mixing mode, firstly adding 30 parts by mass of butadiene rubber and 96.25 parts by mass of SBR (styrene butadiene rubber) for plasticating for 40s, then adding 12.5 parts by mass of carbon black and small materials consisting of 5.4 parts by mass of silane coupling agent Si-69, 1.5 parts by mass of antioxidant RD, 0.3 part by mass of antiscorching agent, 2 parts by mass of ZnO (zinc oxide), 3 parts by mass of oil (aromatic oil), 2 parts by mass of plasticizer A, 1.5 parts by mass of microcrystalline wax and 2 parts by mass of stearic acid, mixing for 40s, then lifting a top plug, finally adding the rest 12.5 parts by mass of carbon black and 175.45 parts by mass of white mixing, lifting the top plug once at 120 degrees, lifting the top plug once at 130 degrees and lifting the top plug once at 140 degrees, keeping the temperature between 140 degrees and 150 degrees for rubber discharge to obtain a mixed rubber material; the mixed rubber material is tested, and the test data of carbon black dispersion degree, tensile strength and tearing strength are obtained and analyzed:
(1) carbon black dispersion analysis, carbon black dispersion values are shown in table 1:
| #1 | #2 | #3 | #4 | #5 | #6 | mean value | |
| Rotor of internal mixer in this embodiment | 8.0 | 8.5 | 8.5 | 8.3 | 8.0 | 7.9 | 8.2 |
| Conventional four-edge synchronous rotor | 7.5 | 7.8 | 7.4 | 7.7 | 7.2 | 7.7 | 7.6 |
It can be known that the dispersion degree of carbon black of the rotor compound of the internal mixer in the embodiment is superior to that of the conventional four-edge synchronous rotor compound; this is because the glue is not only subjected to strong shearing and stretching between the rotor body 1 and the chamber wall, but also to the helix angle β when it is forced to pass between the first long edge 4, the first short edge 5, the second long edge 6 and the second short edge 7 and the chamber wall or between the two rotor bodies 11And beta2The provided stronger axial moving force, strong shearing force, stretching force and axial moving force are beneficial to the distribution and dispersion of the filler and the compounding agent, and the carbon black dispersion degree of the rubber material is increased;
(2) tensile strength and tear strength analysis, the comparison results of the tensile strength and the tear strength of the rotor compound of the internal mixer in the embodiment with those of the conventional four-edge synchronous rotor compound are shown in fig. 5 and fig. 6, it can be known that the tensile strength and the tear strength of the rotor compound of the internal mixer in the embodiment are both higher than those of the conventional four-edge synchronous rotor compound, and the rotor of the internal mixer in the embodiment improves the mixing effect, the physical property and the wet skid resistance of the compound as a whole compared with the conventional four-edge synchronous rotor.
Claims (2)
1. A rotor of an internal mixer is characterized by being a shearing synchronous rotor, and the main structure of the internal mixer comprises a rotor body, a left rubber baffle, a right rubber baffle, a first long edge, a first short edge, a second long edge and a second short edge; the left end of the rotor body with a cylindrical structure is provided with a left rubber baffle, the right end of the rotor body is provided with a right rubber baffle, and the circumference of the outer surface of the base circle of the rotor body is provided with a first long edge, a first short edge, a second long edge and a second short edgeThe long edge and the first short edge extend spirally from the left rubber baffle plate to the middle, and the second long edge and the second short edge extend spirally from the right rubber baffle plate to the middle; the rotating directions of the first long edge and the second long edge are opposite and symmetrical about the center; the first short edge and the second short edge have opposite rotating directions and are symmetrical about the center; the helix angle beta of the first long edge and the second long edge1And the helix angle beta of the first short edge and the second short edge2Both 50 ° ± 10 °, such that the length of the first long edge and the second long edge is 1/2 of the helical lead of the first long edge and the second long edge, and the length of the first short edge and the second short edge is 1/4 of the helical lead of the first short edge and the second short edge; the phase difference between the first long edge and the first short edge, the phase difference between the first long edge and the second long edge at the starting end and the phase difference between the second long edge and the second short edge are all 180 degrees +/-10 degrees; the angle occupied by the widths of the first long edge, the first short edge, the second long edge and the second short edge is a width angle alpha, and the width angle alpha is 30 degrees +/-10 degrees.
2. An internal mixer rotor according to claim 1, characterized in that in an axial section of the rotor body, the radius of curvature of the front peak surface is 60 ° ± 10 °, the radius of curvature of the rear peak surface is 50 ° ± 10 °, and the radius of curvature of the front peak surface is greater than the radius of curvature of the rear peak surface; when the length ratio of the first long edge to the second long edge to the first short edge to the second short edge is 1:2, the axial force and the circumferential force are balanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021148348.2U CN212445884U (en) | 2020-06-19 | 2020-06-19 | Rotor of internal mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021148348.2U CN212445884U (en) | 2020-06-19 | 2020-06-19 | Rotor of internal mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212445884U true CN212445884U (en) | 2021-02-02 |
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ID=74470578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021148348.2U Expired - Fee Related CN212445884U (en) | 2020-06-19 | 2020-06-19 | Rotor of internal mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212445884U (en) |
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2020
- 2020-06-19 CN CN202021148348.2U patent/CN212445884U/en not_active Expired - Fee Related
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