CN1007709B - Rotor of banbury mixer - Google Patents
Rotor of banbury mixerInfo
- Publication number
- CN1007709B CN1007709B CN87105006A CN87105006A CN1007709B CN 1007709 B CN1007709 B CN 1007709B CN 87105006 A CN87105006 A CN 87105006A CN 87105006 A CN87105006 A CN 87105006A CN 1007709 B CN1007709 B CN 1007709B
- Authority
- CN
- China
- Prior art keywords
- rotor
- spiral ridge
- mixing
- short
- design
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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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
- B29B7/02—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 present invention provides a novel rotor of a Banbury mixer with closed disks, which is different from the existing rotor of a Banbury mixer and the prior art. As the closed disks are added, a helix angle of a short helix rib of the rotor is enlarged, the axial length ratio of a long helix rib to the short helix rib is changed, a wedging angle is decreased, and the rotor is universally used for the mixing and the plasticization of rubber and plastics and is also used for the blending of the rubber and the plastics. Experiments indicate that the production efficiency, the mixing quality, and the sealing effect of the Banbury mixer provided with the rotor are better than those of the existing Banbury mixer. In addition, the rotor can be used for the renewal and the reconstruction of the existing Banbury mixer and can also be used for mixing and crushing materials in other industries.
Description
The present invention relates to a kind ofly can be used for the closed-smelting machine rotor that rubber or plastic processing are used separately, particularly a kind ofly both can be used for rubber processing, can be used for plastic processing again, both can be used for rubber plastic blend, can be used for the rotor of the banbury that rubber and plastic and other material blend use again.
Arrow locations shown in Figure 3 is the charge door (6) that material adds, and all various materials is divided to join in the mixing chamber (7) for several times when general banbury is worked and mixes.Mixing chamber (7) is made up of with a pair of relative rotating rotor (2) a mixing locular wall (1) that is fitted in sealing together.All have two spiral ridges (3) and (4) on each rotor (2) at least, the helical angle of wherein long spiral ridge (3) is generally 30 °, and it mainly plays circumferentially, radially mixes, shears material.The helical angle of short spiral ridge (4) is generally 45 °, and it mainly plays axial mixing and radial shear sizing material.Because short spiral ridge (4) helical angle choose general all just can be along the axially-movable of rotor (2) greater than the angle of friction φ material of material and rotor surface.Q is the wedging angle of material, and wedging Q angle, angle is more little, and the material wedging is favourable more.(9) shown in Figure 3 are the rotor peripheral face, and (8) are the rotor non-working surface.(9) radius of curvature of face is more little, and the curve of (9) face is just crooked more, and promptly the wedge area of Xing Chenging is just obvious more.Therefore reduce the radius of curvature of (9) face, the radius of curvature that increases (8) face helps improving mixed effect.Referring to Fig. 1-3.
The banbury serviceability, the quality of mixing quality, except with the cooling of mixing locular wall, the scope of rotating speed, complete machine control level, on press down outside the Pass the pressure of thallium and structure have, then depend primarily on the design of structure, moulding and the geometric parameter of rotor, select and optimize.
Homemade banbury mostly is the old-fashioned banbury of two fins.Major defect is that energy consumption is big, and efficient is low, mixing quality is relatively poor, it is comparatively serious to leak material, and its key just is that the main working parts rotor structure of banbury and geometric parameter select the not too reasonable of design.
Assistant rattan by Japanese Xiao Ping city, 9 inventors such as the Gong Gang in eight prince cities are No. 51001 patent applications on June 22nd, 1979 to the application number that the U.S. proposes, and are awarded in No. 4284358 United States Patent (USP)s in the 1-10 page or leaf in disclosed and No. 2429087 patents of France of quoting as proof on August 18th, 1981 that disclosed technology and relevant accompanying drawing also exist following deficiency in the 15th page.
Referring to Fig. 1-3.The active section two ends of former invention rotor (2) are that nature transition or structure need and carry out the transition to a rank naturally.Therefore, when material airtight and have in the mixing chamber (7) of pressure when mixed because the rotation of rotor and the effect of pressure, material will be extruded in the space (5) between rotor (2) and the mixing locular wall (1) and go.Like this, both caused material easily, also in gap (5), pile up to have formed the dead band easily by spilling in gap (5), the ectocrine material uniformity of mixing the most at last, or make rotor (2) stuck.
In addition, be not best within the ratio range 2.5-10 of the axial length of the long spiral ridge (3) of the given rotor (2) of former invention and short spiral ridge (4).Because long spiral ridge (3) is long more, it circumferentially, radially mixed effect is just good more, the active length L of the main active section that promptly is equivalent to have extended
1
Because the temperature of charge that contacts during working rotor is generally between 35 °-170 °, range of temperature is bigger, to material viscosity is that the influence of coefficient of friction φ (φ=37 °-42 °) is very big, and can this will be directly connected to material axially mixing along rotor.If can not guarantee that material mixes along rotor axial, be inevitable to the influence of the mixing quality of material.Referring to the force analysis of Fig. 6 as can be known, R is that material is the vertical of rotor to material to rotor, and P is the axial force of rotor to material, and T is a frictional force, β
2Helical angle for the short spiral ridge of rotor (2) (4).From force diagram as can be known, T=Rtg φ, P=Rtg β
2, material can axially be mixed, then must make P＞T, i.e. Rtg φ＜Rtg β
2Can draw thus, as long as satisfy β
2＞φ, material just can mix along rotor axial.But owing to the different influences to φ that produce of temperature and material kind, (because rub examine power T=R μ=Rtg φ μ be coefficient of friction) makes β
2The condition of＞φ can not be guaranteed in mixed process.Therefore, the present invention is to the β in the former invention
2Done certain increase, improved mixed effect and enlarge the scope of application of banbury and the adaptability of different material with this.
Task of the present invention is to overcome the above-mentioned shortcoming and defect of existing in prior technology, and a kind of good mixing effect, production efficiency height, strong shearing, low energy consumption, applied widely, adaptable closed-smelting machine rotor are provided.
The present invention is identical by a pair of structure, and opposite the installation can constitute by rotating relatively rotor (2).Wherein (4) are short spiral ridge along rotor axial and the circumferential spiral ridge that launches that extends respectively two on each rotor (2), and (3) are long spiral ridge.At the two ends of the active section L of each rotor (2), the sealing disk (10) of a symmetry is arranged respectively.
Accompanying drawing 1-3 is the front view and the cutaway view of former invention.
Attached Figure 4 and 5 are front view of the present invention and cutaway view.
Accompanying drawing 6 is schematic diagrames of force analysis.
To engage accompanying drawing below is described in further detail the present invention.
Attached Figure 4 and 5 are concrete structures of the present invention, geometric parameter figure.At the two ends of the active section L of rotor (2), the sealing disk (10) of design can prevent effectively or alleviate greatly material directly be pushed through mixing locular wall (1) and rotor (2) between the gap in go.The adding of a sealing disk (10) like this by the pressure that leaks material in the gap (5) of rotor (2), has promptly reduced and has leaked material when not only having alleviated banbury work, has improved the sealing effectiveness of the axle head of rotor (2), has reduced the pollution to environment.And, prevented effectively that also material from easily causing dead angle area to be unfavorable for the appearance of the phenomenon of mixing of materials in gap (5).Because, when material in pressure and temperature, under the complexing action of stirring, can be bonding gradually, be deposited in the annular space of gap (5), the time slightly length will cause incipient scorch, the crystallization of material, cause the stuck of rotor (2) and mixing chamber interior walls (1) easily.Simultaneously, also help the raising of mixing of materials quality,, in mixed process afterwards, just mix if the last material that mixes is stuck in the gap (5) because banbury work the time is step, then can influence the quality of mixed material afterwards, have influence on the quality of product the most at last.The material lump of crystallization in addition,, incipient scorch sandwiches the decline that also easily causes product quality in the mixed material.The adding of sealing disk (10) can also reduce material washing away and wear and tear, the service life of prolongation banbury mixing locular wall (13).Because, the reparation of rotor (2), easier than the maintenance repair welding of mixing locular wall (13), also be vital so prolong the service life of mixing locular wall (13).In addition, the adding of sealing disk (10) has realized that not only material mixes circulation on a pair of rotor (2), quickened the mixing of material, saved incorporation time, and, mixed effectively on the active section length L that material is concentrated be limited in a pair of rotor (2) and sheared.Because sealing disk (10) has stoped material to the moving of inoperative section, its result also will improve mixing efficiency and mixing quality.The radial dimension of sealing disk (10) can be greater than rotor base circle diameter (BCD) D
1To being equal to or greater than rotor maximum rotating diameter D
2Scope in choose.Sealing disk (10) and rotor base circle diameter (BCD) D
1The circular arc r of part of relative transition unsuitable excessive or too small.Because the excessive material that easily makes skids off sealing disk (10), too small easy generation dead angle area influence mixes.The radial dimension of sealing disk is preferably in the maximum rotating diameter D greater than rotor (8)
25mm is to the maximum rotating diameter D less than rotor (2)
2Choose between the 35mm.
The present invention also enlarges the axial length ratio range of former invention about rotor length spiral ridge the axial length L of the long spiral ridge (12) of the rotor after the expansion (2)
1Axial length L with short spiral ridge (11)
2Ratio range be (l
1)/(l
2) between 10 to 12.Because (l
1)/(l
2) increase of ratio, the axial active length L of the long spiral ridge (12) that just equals to have extended
1, so just can make the arc that forms between spiral ridge (12) and the mixing locular wall (13) shear section, thereby quicken the effect of shear-mixed at axial lengthening.
In order to enlarge rotor (2) to different material, the accommodation of different temperatures still can be finished the axial mixing of material in order to ensure material later in operation conditions change, and the present invention is the helixangle of the short spiral ridge (11) of rotor (2)
2Be increased to 46 °-58 ° and show β by original 45 ° through test
2Scope best between 48 °-55 °, and between 49 °-53 ° for better.Referring to Fig. 4.
In order to strengthen mixing, shear effect, improve the adaptability of rotor (2) to different material, shorten incorporation time, the present invention is directed to and wedge angle Q in the prior art than the unconspicuous deficiency of wedge area between big and working face b side and mixing locular wall (13) inwall, and taked to reduce the radius of curvature of working face one side (9) of rotor (2), (9) the side radius of curvature reduces, caused the increase of (9) side curvature, make the curved surface of rotor side surface (9) become crooked more, make the wedge area of (9) side more obvious.Analyze by the rheology solid conveying theory, wedge area is obvious, and material is easy more to be brought into strong shear zone d.And, the increase of wedge shape degree, can make material be subjected to gradually, as soon as possible entering strong shear zone d again after the increasing compression, so not only shear effect is good, and has avoided owing to comparatively fast enter temporary impact and the overload that cause machine strong shear zone under hard, the sticking situation of material.Make the more stable work of banbury, security improves.Reduce Q=tg
-1(e)/(h), just mean the width e that reduces the h value or widen the spiral ridge top, because h is more little, e is wide more, and material is by just difficult more, and suffered shear effect is just good more.In like manner, increase the radius of curvature of non-working surface one side (8), the curve that just equals the side (9) rotor becomes straight, space between (8) side curvilinear surface and the mixing locular wall (1) is increased, and helping through the material after the strong shearing in d district enough stress relaxation room and times being arranged like this is very favourable to improving the shear-mixed effect.Therefore the ratio of the radius of curvature of the radius of curvature of the working face (9) of rotor of the present invention (2) and non-working surface (8) is between 0.55 to 0.75, and preferred range is between the 0.60-0.70.
The design of above structure, geometric parameter, improvement, optimization and collocation not only passed through the theory analysis and the derivation of rheology, thermal conduction study, also is the best-of-breed technology solution of having passed through after the test of many times preferably, comprehensively having come out.Therefore, it is not only applicable to digonous rotor, is applicable to tetragonous rotor yet, is not only applicable to the rotor that spiral prominence rib number equates on each rotor, is applicable to the unequal rotor of spiral prominence rib number on each rotor yet.
Show that by blend experiment need to mix 30-40 minute, its impact strength only reaches 8Kg-cm/cm in φ 400 high temperature mills to the mixed HTPS (HLPS) of difficulty
2, and only needing 1-1.5 minute at the mixer mixing that this rotor (2) is housed, its impact strength can reach 11Kg-cm/cm
2
Rotor of the present invention (2) can be used for the retrofitting of used machine and the renewal of existing banbury.Rotor of the present invention (2) through amplifying, is dwindled the old-fashioned rotor that can directly replace existing banbury after the design.Also can be applied to the selection of the design of rotor of the present invention (2), geometric parameter in the existing rotor of existing banbury and go.So not only save time, province's funds, also can bring into play the huge production potentiality of existing banbury.Therefore, the present invention has bigger practical value.
Therefore, rotor of the present invention (2) be that a kind of adaptability is strong, the scope of application is wide, production efficiency is high, mixing quality is good, save time, energy-conservation, the novel strong shearing closed-smelting machine rotor that is easy to promote the use of.It also is applicable to mixing, stirring and the fragmentation of the various materials of industries such as light industry, chemical industry, building materials except being applicable to the rubber and plastic industry.More be applicable to the renewal and the transformation of existing banbury.
Claims (4)
1, a pair of relative revolution, parallel installation is characterized in that by the closed-smelting machine rotor (2) that long spiral ridge (3) and short spiral ridge (4) constitute it is that a pair of design has symmetry sealing disk (10), the short spiral prominence corner angle of rotor β
2Can 46 ° to 58 °, rotor peripheral face and non-working surface radius of curvature ratio can be 0.5 to 0.75, the long spiral ridge of rotor compares L with short fin rib length
1/ L
2The closed-smelting machine rotor that can between 10 to 12 scopes, design and choose.
2, according to the described closed-smelting machine rotor of claim 1, it is characterized in that sealing disk (10) is the two ends of designing respectively at the active section L of rotor (2), and its radial dimension can be greater than rotor (2) base circle diameter (BCD) D
1Be equal to or greater than rotor (2) maximum rotating diameter D
2Choose base circle diameter (BCD) D in the scope
1And rotor helical-screw fin (4) and (3) with seal disk (10) mutually transition position should adopt suitable round-corner transition.
3, according to claim 1 or 2 described closed-smelting machine rotors.The helixangle 2 that it is characterized in that the short spiral ridge (4) of rotor (2) is the best between 48 ° to 55 °, the working face (9) of rotor (2) and the design of non-working surface (8) radius of curvature ratio are best between 0.6 to 0.7, and the long spiral ridge of rotor (2) (3) compares L with short spiral ridge (4) rib length
1/ L
2Design is best between 10 to 11.
4, according to the described closed-smelting machine rotor of claim 3, it is characterized in that the structure of rotor (2) and geometric parameter design, choose the rotor that is applicable to that the long and short spiral prominence rib of each rotor number equates, also be fit to the rotor that long and short spiral prominence rib number does not wait on each rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87105006A CN1007709B (en) | 1987-07-25 | 1987-07-25 | Rotor of banbury mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87105006A CN1007709B (en) | 1987-07-25 | 1987-07-25 | Rotor of banbury mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87105006A CN87105006A (en) | 1988-08-03 |
| CN1007709B true CN1007709B (en) | 1990-04-25 |
Family
ID=4815104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87105006A Expired CN1007709B (en) | 1987-07-25 | 1987-07-25 | Rotor of banbury mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007709B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530209B (en) * | 2003-03-12 | 2013-01-02 | 株式会社神户制钢所 | Closed mixer |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139464B (en) * | 2014-07-11 | 2017-11-10 | 徐州工业职业技术学院 | A kind of banbury involute shape rotor |
| CN104129006B (en) * | 2014-08-01 | 2017-02-15 | 盐城科高机电技术装备有限公司 | Double-cycloid section type banbury mixer rotor |
| CN107877722B (en) * | 2017-09-30 | 2019-09-03 | 重庆威星橡胶工业有限公司 | Prevent the mixer of leakage |
| CN110370483A (en) * | 2019-08-27 | 2019-10-25 | 青岛科技大学 | A kind of closed-smelting machine rotor sealing structure |
| CN111701523B (en) * | 2020-06-28 | 2022-06-14 | 中国兵器装备集团自动化研究所 | Kneading safety transmission device |
-
1987
- 1987-07-25 CN CN87105006A patent/CN1007709B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530209B (en) * | 2003-03-12 | 2013-01-02 | 株式会社神户制钢所 | Closed mixer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN87105006A (en) | 1988-08-03 |
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