CN111823429A - High-fluidity quadrangular rotor - Google Patents

High-fluidity quadrangular rotor Download PDF

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Publication number
CN111823429A
CN111823429A CN202010565383.2A CN202010565383A CN111823429A CN 111823429 A CN111823429 A CN 111823429A CN 202010565383 A CN202010565383 A CN 202010565383A CN 111823429 A CN111823429 A CN 111823429A
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China
Prior art keywords
long edge
long
edge
rotor
arris
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CN202010565383.2A
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Chinese (zh)
Inventor
汪传生
朱东林
边慧光
郝国强
翟天剑
温潇潇
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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Priority to CN202010565383.2A priority Critical patent/CN111823429A/en
Publication of CN111823429A publication Critical patent/CN111823429A/en
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    • 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
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • 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
    • B29B7/02—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
    • B29B7/20—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 with intermeshing devices, e.g. screws
    • 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

Abstract

The invention belongs to the technical field of rubber and plastic mechanical equipment, and relates to a high-fluidity four-edge rotor1Is greater than the small helix angle beta2When the rubber material is forced to pass through the first long edge, the second long edge, the third long edge and the fourth long edge and the compact chamber wall or between the front rotor and the rear rotor at the initial mixing stage, the rubber material is subjected to strong shearing and stretching actions between the front rotor and the compact chamber wall and between the rear rotor and the compact chamber wall, and along with the shearing temperature rise and the reduction of Mooney viscosity, when the viscoelastic rubber material is between the first long edge, the second long edge, the third long edge and the fourth long edge and the compact chamber wall, the rubber material which becomes thinner by shearing has better axial flow characteristics at the large spiral angle edge and the small spiral angle edge, can realize strong shearing dispersion, and achieves the purpose of fully dispersing the rubber material in the white carbon black formulaAnd silanization reaction.

Description

High-fluidity quadrangular rotor
The technical field is as follows:
the invention belongs to the technical field of rubber and plastic mechanical equipment, and particularly relates to a high-fluidity quadrangular rotor which can improve the fluidity and the dispersibility of rubber materials.
Background art:
with the rapid development of the rubber industry and the increase of the demand of the society for rubber materials, the rubber industry has become one of the important supporting industries of national economy, and the rubber mixing process is also important as a key ring of the rubber industry.
In the rubber mixing process, an internal mixer is a key device, and the movement of the mixed rubber in an internal mixing chamber mainly has two forms: the other one is axial movement which can play the role of automatic rubber turning and mixing, so that the rubber material can achieve sufficient dispersion effect in the mixing chamber. And a new interface is generated through the shearing and stretching action of the rotor in the flowing process, the new interface is an important factor for improving the mixing effect of the small materials, and the key for ensuring the sufficient flowing performance of the rubber material in the mixing chamber is to ensure the performance of the mixing rubber. And the better fluidity is also the main factor for improving the mixing efficiency, and the more the shearing and the reverse rotation of the rubber material in the mixing chamber occur in unit time, the shorter the mixing time is, so that the mixing efficiency is higher and the energy is saved.
The four-edge sawtooth type dynamic variable gap internal mixer rotor disclosed in the chinese patent 201610739927.6 comprises a rotor body, wherein four protruded edges are arranged on the rotor body, including two long edges and two short edges, and the protruded edges spirally extend from two ends of the rotor body to the middle, including a start end and a terminal end; a plurality of tooth grooves are respectively arranged on the tops of the convex edges, the width difference of the tooth grooves on each convex edge is unchanged along the direction from the starting end to the ending end, the distance between the tooth grooves is gradually reduced, and the depth of the tooth grooves in the axial direction of the rotor is the same; the opening direction of the tooth grooves is parallel to the end face of the rotor body, and a tooth groove space is formed between each tooth groove and the adjacent tooth groove; the width of the tooth groove on the protruded ridge is equal to the width difference of the adjacent tooth grooves, and the width difference is determined according to the length of the rotor ridge; the width of the tooth space interval is continuously reduced along the direction from the starting end to the ending end and is determined by the length of the rotor edge; the projection position relation of the tooth grooves on the axis of the rotor body is as follows: the tooth space interval on one long edge corresponds to the tooth space position on the other long edge, and the tooth spaces are equal in width; the four-edge synchronous rotor for the pressurized kneading machine disclosed in the Chinese patent 200820012572.1 comprises a rotor shaft, wherein the middle part of the rotor shaft is provided with a left end plate and a right end plate, the rotor shaft is arranged between the left end plate and the right end plate in two sections, and each section is provided with two symmetrical spiral arrises; wherein, one section is a right-handed long prism, the other section is a left-handed short prism, and the two sections of long and short spiral prisms are crossly and uniformly distributed at intervals of 90 degrees along the circumference of the rotor shaft; the rotor of the synchronous four-edge sawtooth type dynamic variable gap internal mixer disclosed in chinese patent 201610738024.6 includes a rotor body, and four protruded edges are provided on the rotor body, including two long edges and two short edges, and is characterized in that one of the long edges and one of the short edges start at one end of the rotor body, the other of the short edges and the other of the long edges start at the other end of the rotor body, and the protruded edges extend spirally from two ends of the rotor body to the middle, and include a start end and a terminal end; the tops of the convex edges are respectively provided with a plurality of tooth grooves, the width difference of the tooth grooves on each convex edge is kept unchanged along the direction from the starting end to the ending end, the distance between each tooth groove and the corresponding tooth groove is gradually reduced, and the tooth grooves are changed in depth and depth in the axial direction of the rotor at the same time; the opening direction of the tooth grooves is parallel to the end face of the rotor body, the tooth groove space is arranged between each tooth groove and the adjacent tooth groove, the width difference between the tooth groove on each protruded ridge and the adjacent tooth groove is equal, and the width difference is determined according to the length of each rotor ridge; the width of the tooth space interval is continuously reduced along the direction from the starting end to the ending end and is determined by the length of the rotor edge; on any axial section of the rotor body, the projection of the bottom surface of the tooth groove on the axial section is on a shallow tooth groove circle and a deep tooth groove circle which take the rotor body as the center of a circle.
The rotor in the patent product and the prior art has the problem of lower rubber mixing efficiency and rubber mixing quality. Therefore, the high-fluidity quadrangular rotor is designed and developed, and the rubber mixing speed and the rubber mixing quality are improved.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and seeks to design a high-fluidity quadrangular rotor, improve the fluidity of rubber materials, improve the dispersibility of carbon black in rubber and further improve the physical and mechanical properties of rubber compounds.
In order to achieve the above object, the high-fluidity quadrangular rotor according to the present invention is a synchronous rotor, the front and rear rotors have the same rotation speed and opposite rotation directions, and the main body structures of the front and rear rotors are the same, and each rotor body includes a rotor body, a left rubber blocking plate, a right rubber blocking plate, a first long edge, a second long edge, a third long edge, and a fourth long 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 right side and keeps off the offset plate, is provided with first long arris, the long arris of second, the long arris of third and fourth on the rotor block, and first long arris and the long arris of second keep off the offset plate from a left side and extend to middle spiral, and the long arris of third and fourth extend to middle spiral from right side fender offset plate, and first long arris, the long arris of second, the long arris of third and fourth constitute by big spiral angle arris and little spiral angle arris transitional coupling.
The rotor body is of a cylindrical structure, and the first long edge, the second long edge, the third long edge and the fourth long edge are arranged on the circumference of the outer surface of a base circle of the rotor body.
The first long edge, the second long edge, the third long edge and the fourth long edge are of double helix angle structures; the rotating directions of the first long edge and the second long edge are the same and are symmetrical about the center, the rotating directions of the third long edge and the fourth long edge are the same and are symmetrical about the center, and the rotating directions of the first long edge and the third long edge and the fourth long edge and the rotating directions of the second long edge and the third long edge and the fourth long edge are opposite; the first long edge and the second long edge are distributed with a difference of 180 degrees, the third long edge and the fourth long edge are distributed with a difference of 180 degrees, the first long edge and the third long edge and the fourth long edge are distributed with a difference of 90 degrees, and the second long edge and the third long edge and the fourth long edge are distributed with a difference of 90 degrees; the distance between the tops of the first long edge, the second long edge, the third long edge and the fourth long edge and the wall of the mixing chamber is 1-2mm, and when the distance is 1mm, the shearing effect is maximum.
The large spiral corner edge is close to the left rubber baffle plate and the right rubber baffle plate, and the small spiral corner edge is far away from the left rubber baffle plate and the right rubber baffle plate; the helix angle of the large helix angle edge is a large helix angle beta1And 40-50 DEG, the helix angle of the small helix angle edge is a small helix angle beta2And is between 20 and 40 degrees; when the length ratio of the large spiral angular edge to the small spiral angular edge is 1:3, the balance of the axial force and the circumferential force can be ensured.
According to the high-fluidity quadrangular rotor, on the axial section of the rotor body 1, the curvature radius of the front peak surface is 60 degrees +/-10 degrees, the curvature radius of the rear peak surface is 50 degrees +/-10 degrees, and the curvature radius of the front peak surface is larger than that of the rear peak surface, so that good glue-eating performance can be ensured.
Compared with the prior art, the invention has the following advantages: 1. the first long edge, the second long edge, the third long edge and the fourth long edge are all designed by adopting long edges, short edges are eliminated, the shearing effect of the rotor body on rubber materials is improved, and the dispersion of compounding agents is facilitated; 2. the first long edge, the second long edge, the third long edge and the fourth long edge are all designed by adopting variable helical angles, and the large helical angle beta1Is greater than the small helix angle beta2The value of the magnetic iron core increases the axial and circumferential flowability of the rotor body to the rubber material, improves the flowing effect in the mixing process and improves the quality of the mixed rubber; 3. the front rotor and the rear rotor adopt different phase angles to adapt to sizing materials with different properties, so that specialized mixing application is achieved; 4. in the initial stage of mixing, when the rubber material is forced to pass through the first long edge, the second long edge, the third long edge and the fourth long edge and the wall of the sealing and refining chamber or between the front rotor and the rear rotor, the rubber material is subjected to strong shearing and stretching actions between the front rotor and the wall of the sealing and refining chamber, and when the viscoelastic rubber material is between the first long edge, the second long edge, the third long edge and the fourth long edge and the wall of the sealing and refining chamber along with the shearing temperature rise and the reduction of the Mooney viscosity, the rubber material which becomes thinner by shearing is arranged between the large spiral angle edge and the wall of the sealing and refiningThe small spiral corner has better axial flow characteristic, can realize strong shearing dispersion, and provides effective guarantee for the rubber material of the white carbon black formula to achieve full dispersion and silanization reaction.
Description of the drawings:
fig. 1 is a schematic diagram of the principle of the main structure of the present invention.
Fig. 2 is a front view of the main structure of the present invention.
Fig. 3 is an expanded view of the first long rib, the second long rib, the third long rib, and the fourth long rib according to the present invention.
Fig. 4 is a sectional view of the main structure of the present invention.
Fig. 5 is a schematic diagram of the front and rear rotors of the present invention in 0 ° phase engagement.
Fig. 6 is a developed view of the front and rear rotors of the present invention in 0 ° phase engagement.
Fig. 7 is a development view of the front and rear rotors of the present invention in 90 ° phase engagement.
FIG. 8 is a comparison of test results of sizing uniformity tests of high flow quad-rotors of the present invention versus conventional quad-synchronous rotors.
The specific implementation mode is as follows:
the invention is further described below by way of an embodiment example in conjunction with the accompanying drawings.
Example 1:
the high-fluidity quadrangular rotor related to the embodiment is a synchronous rotor, the front rotor and the rear rotor have the same rotating speed and opposite rotating directions, and the main body structures of the front rotor and the rear rotor are the same and respectively comprise a rotor body 1, a left rubber baffle plate 2, a right rubber baffle plate 3, a first long edge 4, a second long edge 5, a third long edge 6 and a fourth long edge 7; the left end of the rotor body 1 of cylindrical structure is provided with left side and keeps off offset plate 2, the right-hand member of rotor body 1 is provided with right side and keeps off offset plate 3, be provided with first long arris 4 on the base circle surface circumference of rotor body 1, second long arris 5, third long arris 6 and fourth long arris 7, first long arris 4 and second long arris 5 keep off offset plate 2 from a left side and extend to middle spiral, third long arris 6 and fourth long arris 7 extend to middle spiral from right side fender offset plate 3, first long arris 4, second long arris 5, third long arris 6 and fourth long arris 7 constitute by big spiral angle arris 8 and little spiral angle arris 9 transitional coupling, big spiral angle arris 8 is close to left side and keeps off offset plate 2 and right fender offset plate 3, left side fender offset plate 2 and right fender offset plate 3 are kept away from to little spiral angle arris 9.
The present embodiment relates to a large helix angle β1Is 45 degrees and a small spiral angle beta2Is 26 degrees; the radius of curvature of the front peak surface 10 is 60 °, and the radius of curvature of the rear peak surface 11 is 50 °.
The high mobility quadrangular rotor that this embodiment relates to adopts conventional quadrangular synchronous rotor to carry out contrast experiment to the dispersion distribution influence of sizing material, installs the high mobility quadrangular rotor of this embodiment and conventional quadrangular synchronous rotor respectively on the banbury mixer and carries out mixing, 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 to obtain and analyze the experimental data of carbon black dispersion degree, Mooney viscosity, physical property parameters and low strain shear modulus:
(1) carbon black dispersion analysis, carbon black dispersion values are shown in table 1:
Figure BDA0002547651750000051
it can be seen that the dispersion degree of carbon black of the high-fluidity quadrangular rotor compound of the embodiment is superior to that of the conventional quadrangular synchronous rotor compound; this is because the first long edge 4, the second long edge 5, the third long edge 6, and the fourth long edge 7 facilitate the distribution and dispersion of the filler and the compounding agents when the rubber is forced to pass between the first long edge 4, the second long edge 5, the third long edge 6, and the fourth long edge 7 and the compacting chamber wall or the front and rear rotors;
(2) and (3) sizing material uniformity analysis: selecting four positions from the same piece of sizing material, sampling and carrying out deformation scanning in RPA, wherein if the dispersion degree of the white carbon black at the four positions is concentrated, the uniformity of the sizing material is better; adjusting the rubber sheet for 5min under the condition that the temperature is 60 ℃, carrying out deformation scanning twice on the vulcanized sample, wherein the shear modulus in the first deformation scanning is the interaction between the filler and the rubber molecular chain, the interaction between the fillers is broken in the scanning, and the shear modulus in the second scanning is the interaction between the filler and the molecular chain, and the formula is as follows:
Figure BDA0002547651750000061
obtaining a dispersion coefficient, wherein payne (max) is a payne effect of a formula obtained without adding a silane coupling agent, namely a shear modulus curve is reduced to an area which is approximately covered by a stable and deformation abscissa, and payne (01) is an area which is approximately covered by the stable and deformation abscissa when the shear modulus curve is reduced during the first deformation scanning; payne
(02) The shear modulus curve is decreased to be close to the area covered by the stable and deformed abscissa during the second deformation scanning; the results of the test on the uniformity of the rubber compound of the high-fluidity quadrangular rotor and the conventional quadrangular synchronous rotor in the embodiment are shown in fig. 8, which shows that the dispersibility and uniformity of the white carbon black of the high-fluidity quadrangular rotor compound are better than those of the conventional quadrangular synchronous rotor compound, and thus the high-fluidity quadrangular rotor is beneficial to mixing of fillers; this is because white carbon black is very easy to aggregate in the mixing process, and once aggregated, the white carbon black is very difficult to redisperse and can be dispersed by shearing for many times; the ministry of honesty states that the "degree of dispersion of the compounding ingredients in the mix is determined by the ' high shear region ' proposed by Mckelvcy ' is a major problem in the probability of the compound containing the compounding ingredients passing through this region and its product with the rotor speed and mixing time. The high-fluidity quadrangular rotor can enhance the dispersion effect of white carbon black and the uniformity of the same batch of rubber material;
(3) physical property analysis: the physical property profile of the high flow square rotor compound of this example is shown in table 1:
Figure BDA0002547651750000062
Figure BDA0002547651750000071
it can be known that the Mooney viscosity of the high-fluidity quadrangular rotor compound is lower than that of the conventional quadrangular synchronous rotor compound, and the later-stage processing of rubber materials is facilitated; the physical properties of the high-fluidity quadrangular rotor compound are better than those of the conventional quadrangular synchronous rotor shear type rotor compound on the whole, and are specifically represented as follows:
1. the Mooney viscosity value of the rubber material of the high-fluidity quadrangular rotor in the embodiment is lower than that of the conventional quadrangular synchronous rotor, and the dispersion degree of carbon black and white carbon black and the uniformity of mixed rubber are obviously better than those of the conventional quadrangular synchronous rotor in the high-fluidity quadrangular rotor in the embodiment;
2. the high-fluidity quadrangular rotor has good dispersion effect on the filler and good flowing effect on the rubber material, so that the physical property, the wet-skid resistance and the like of the rubber compound are better than those of the conventional quadrangular synchronous rotor on the whole, and the influence of the mixing of the high-fluidity quadrangular rotor on the rubber material performance is better than that of the mixing of the conventional quadrangular synchronous rotor on the rubber material performance on the whole through experimental research and comparison.

Claims (5)

1. A high-fluidity quadrangular rotor is characterized in that the main structure comprises synchronous rotors, the rotating speeds of front and rear rotors are the same, the rotating directions are opposite, the main structures of the front and rear rotors are the same, and the rotors respectively comprise a rotor body, a left rubber baffle, a right rubber baffle, a first long edge, a second long edge, a third long edge and a fourth long 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 right side and keeps off the offset plate, is provided with first long arris, the long arris of second, the long arris of third and fourth on the rotor block, and first long arris and the long arris of second keep off the offset plate from a left side and extend to middle spiral, and the long arris of third and fourth extend to middle spiral from right side fender offset plate, and first long arris, the long arris of second, the long arris of third and fourth constitute by big spiral angle arris and little spiral angle arris transitional coupling.
2. A high flow capacity quadrangular prism rotor according to claim 1, wherein the rotor body has a cylindrical configuration, and the first long rib, the second long rib, the third long rib and the fourth long rib are provided on the circumference of the outer surface of the base circle of the rotor body.
3. A high-flow quadrangular prism rotor according to claim 1 or 2, wherein the first long edge, the second long edge, the third long edge and the fourth long edge are each a double helix angle structure; the rotating directions of the first long edge and the second long edge are the same and are symmetrical about the center, the rotating directions of the third long edge and the fourth long edge are the same and are symmetrical about the center, and the rotating directions of the first long edge and the third long edge and the fourth long edge and the rotating directions of the second long edge and the third long edge and the fourth long edge are opposite; the first long edge and the second long edge are distributed with a difference of 180 degrees, the third long edge and the fourth long edge are distributed with a difference of 180 degrees, the first long edge and the third long edge and the fourth long edge are distributed with a difference of 90 degrees, and the second long edge and the third long edge and the fourth long edge are distributed with a difference of 90 degrees; the distance between the tops of the first long edge, the second long edge, the third long edge and the fourth long edge and the wall of the mixing chamber is 1-2mm, and when the distance is 1mm, the shearing effect is maximum.
4. The high-fluidity quadrangular rotor according to claim 1 or 2, wherein the large spiral corner edges are close to the left and right rubber barriers, and the small spiral corner edges are far from the left and right rubber barriers; the helix angle of the large helix angle edge is a large helix angle beta1And 40-50 DEG, the helix angle of the small helix angle edge is a small helix angle beta2And is between 20 and 40 degrees; when the length ratio of the large spiral angular edge to the small spiral angular edge is 1:3, the axial force and the circumferential force are balanced.
5. A high-fluidity quadrangular rotor according to claim 1 or 2, wherein, in an axial section of the rotor body, the radius of curvature of the front peak face is 60 ° ± 10 °, the radius of curvature of the rear peak face is 50 ° ± 10 °, and the radius of curvature of the front peak face is larger than the radius of curvature of the rear peak face, so that the gum eating performance can be ensured.
CN202010565383.2A 2020-06-19 2020-06-19 High-fluidity quadrangular rotor Pending CN111823429A (en)

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