CN102166794B - Rubber continuous mixing dual-rotor structure and mixing equipment adopting same - Google Patents

Rubber continuous mixing dual-rotor structure and mixing equipment adopting same Download PDF

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Publication number
CN102166794B
CN102166794B CN201110026202XA CN201110026202A CN102166794B CN 102166794 B CN102166794 B CN 102166794B CN 201110026202X A CN201110026202X A CN 201110026202XA CN 201110026202 A CN201110026202 A CN 201110026202A CN 102166794 B CN102166794 B CN 102166794B
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China
Prior art keywords
mixing
section
rotor
dual
machine barrel
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CN102166794A (en
Inventor
汪传生
付平
李利
曾宪奎
沈波
边慧光
林广义
陈春平
张德伟
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • 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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/465—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft each shaft comprising rotor parts of the Banbury type in addition to screw parts
    • 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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489—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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
    • 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
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/41—Intermeshing counter-rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/47—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using discs, e.g. plasticising the moulding material by passing it between a fixed and a rotating disc that are coaxially arranged
    • 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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a rubber continuous mixing dual-rotor structure. A feeding section of a pair of composite rotors in the rubber continuous mixing dual-rotor structure is a large-lead threaded structure, a kneading section is of a jugged disk structure, a mixing section respectively comprises a shearing type rotor mixing element, a meshing type rotor mixing element and a large-lead rotor mixing element; the dual-rotor structure in the invention is arranged in a mixing equipment cylinder, and a control system is connected with a cooling system, a power transmission system and a feeding mechanism. The composite rotor structure can realize rubber continuous, efficient and high-quality mixing. The mixing equipment can be used for carrying out continuous, efficient and high-quality mixing, is matched with blocky rubber continuous plasticating equipment, and can realize blocky rubber continuous mixing.

Description

Rubber compound continuous mixing dual-rotor structure and adopt the mixing facilities of this structure
Technical field
The present invention relates to the rubber processing former, be concretely a kind of for rubber continuously, the efficient and mixing dual-rotor structure of high-quality and adopt the mixing facilities of this structure.
Background technology
Mixing process is the most key in the rubber processing, it also is the highest link of energy consumption, the fine or not final decision of the quality of elastomeric compound quality and the service life of end product quality, therefore, be the focus that domestic and international rubber processing is already paid close attention to for the research of mixing link all the time with improving.
At present, the used mixing facilities of rubber industry mainly is mill and banbury, and they all are the batch (-type) mixing facilities, and production process is discontinuous, and the difference of each operating condition can cause the shortcomings such as mixing is unstable.Therefore, the mixing production that realizes efficient rubber, high-quality serialization is in decades rubber processing industry technical staff's dream, and this is again the emphasis of research and development as the rotor structure of mixing facilities core wherein.
So-called continuous mixing refers to adopt continuous mixer, and according to the proportioning continuous charging of setting and carry out continuous mixing, elastomeric compound then can be discharged continuously from the binder removal mouth with rubber or broken-down rubber and compounding ingredient.Continuous mixing can be realized reinforced and discharging is carried out simultaneously, increase substantially production efficiency, exempt or simplify huge banbury, lower subsidiary engine and upper subsidiary engine, and then by a linkage production line replacement, the structure of simplified apparatus widely, the decrease energy consumption improves mix quality and stability, and realizes easily the operation of safety, environmental protection.
The a lot of countries in the world have proposed this new theory of continuous mixing at present, and also various continuous mixing equipments have been produced in design.The developments such as the U.S., Italy, Germany, produce the continuous mixer of various models, but these continuous mixing equipments are only applicable to plastics and have mobile sizing material, namely sizing material must be Powdered or granular, and must shift to an earlier date premix with carbon black.In modern rubber industry is produced, because raw material mainly is niggerhead, so mainly still depending on banbury finishes the mixing of rubber in producing, then carry out compressing tablet through tablet press machine or through extruder for shaping.Therefore, truly the continuous mixing of non-Powdered and crumb rubber is not also realized.
Chinese utility model patent, Granted publication CN2815670Y, the equipment of mixing and molding " a kind of high polymer altogether " discloses and a kind ofly met material holding chamber at banbury discharge gate place, connect the technical scheme of extruder under material holding chamber's discharging opening, its mixing part still adopts intermittent mode, just the work of extruding part is continuous, so it also is not continuous mixing truly.Chinese invention patent, publication number CN101288985A, " continuous pugging extruder rotor " are a kind of screw rods of petrochemical industry ethylene project mixing extrusion pelleting machine set, are fit to the continuous processing of plastics, because its feeding section adopts the multiple thread of engagement or half engagement, make the feeding difficulty; Its mixing section is all for forming screw thread by forward and reverse many ribs spiral, perhaps forming mixing section by forward and reverse many ribs spiral mixes with the one-way spiral mixing section, draw ratio is less than 12, exist rubber compounding time weak point, mixing, shearing, drawing effect poor, be difficult to various batchings are scattered in fully equably in the rubber, make the shortcoming such as the uniform elastomeric compound of quality, so can not be used for the continuous mixing of rubber.
Summary of the invention
The present invention will solve the technical problem that existing equipment can not be realized rubber compound continuous mixing processing, provide a kind of can realize rubber continuously, the dual-rotor structure of efficient, high-quality mixing facilities and adopt this structure, to carry out rubber continuous, efficient and high-quality mixing, support the use with the continuous plasticating equipment of niggerhead, can realize the continuous mixing equipment of niggerhead.
The technical scheme that the present invention takes in order to solve the problems of the technologies described above is: a kind of rubber compound continuous mixing dual-rotor structure, comprise a pair of incorgruous screw thread, parallel, compound rotor that counter rotating is identical with rotating speed, the rotor rear end connects power drive system, threaded portion in a pair of compound rotor is the part engagement, and feeding section, kneading section, mixing section and extruding zone are arranged on the rotor; Feeding section is the steep-lead thread structure; The kneading section adopts the toothed disc structure; Mixing section forms by three sections, and the mixing section I is the shearing rotor mixing elements, and the mixing section II is the meshing rotor mixing elements, and the mixing section III is large helical pitch rotor mixing elements.
The mixing space of the more single screw-rod structure in mixing space between compound birotor and the machine barrel is large, and mixing output is high.The birotor conveying capacity is strong, has strengthened the flowability of material, avoids material to stagnate.The rotor elements parallel, that direction of rotation opposite and part meshes, strong, mixing evenly to material cutting and peptizaiton, the opposite birotor of direction of rotation makes than homodromal birotor that material fluidity is better, conveying capacity is stronger, pressure is larger, and two rotor opposite direction rotatings, be that inside rotate effect is better, the composite rotors of a pair of incorgruous screw thread makes mixing more abundant, more even.The steep-lead thread structure of feeding section has guaranteed that material enters smoothly.The kneading section mainly plays the shunting immixture.In the three-stage mixing section, material is pushed, shears, pushes, dispersion, Agitation and mixing, and is fully mixing.
Rubber compound continuous mixing dual-rotor structure of the present invention can realize that rubber is continuous, efficient, high-quality is mixing.
Feeding section is one start screw, and pitch reduces by before backward; Toothed disc end face on two roots rotors of kneading section is relative, leaves the gap; One end of mixing section I has the different left-handed lug, nib of two segment length, and the other end has the different dextrorotation lug, nib of two segment length; The mixing section II has the spiral lug, nib of two weak points, and a long spiral lug, nib is arranged between the spiral lug, nib of two weak points; Two spiral shell ribs are arranged on the mixing section III, and two sections that the spiral shell rib is different by the screw thread rotation direction, helical angle is different are threaded and form; Extruding zone is double thread, and its latter part of pitch reduces by before backward, and front portion pitch equates.The effect that pitch is also played brokenly glue and further improves the sizing material plasticizing effect in conveying, compacting material by the feeding section that reduces before backward, the compacting of material mainly plays the part air of bringing into when discharging charging, and the compounding ingredient of broken-down rubber and adding is fully contacted.Be divided into some strands when the toothed disc of material by a roots rotor kneading section, material flow is cut off by the toothed disc of another roots rotor kneading section after out.During the mixing rotor elements rotation of shearing-type, because two epitrochanterian lug, nibs working diameter when cooperating is in different size, formed velocity gradient, cause that material is in larger the flowing of circumferencial direction, make material be subject to larger thrust, propulsive thrust, shearing and squeezing action from lug, nib, material between rotor, be subject to collapsing and axially come and go, the effects such as cutting, stirring, compounding ingredient is better disperseed, evenly distribute.The lug, nib of a meshing rotor mixing elements is successively between the rib of engaging-in another engagement type element, the lug, nib external diameter is different from the linear velocity of lug, nib root rotation, and material is in strong kneading, shearing and the squeezing action of repeatedly carrying out that are subject between the meshing rotor mixing elements and between rotor and the machine tube inner wall constantly changing.The forward screw thread of large helical pitch rotor mixing elements spiral shell rib pushes away forward material, and reverse thread is to the pusher material, and material produces mixing, stretching and the shearing of vertical and horizontal under the effect of both forward and reverse directions power, constantly be extruded, shear, disperse and mix.Extruding zone is smooth and easy, stably elastomeric compound is extruded, and the rear portion of extruding zone mainly plays compacting and conveying, and front portion plays and guarantees to extrude stable, obtains the effect than the good quality elastomeric compound.
The thread depth of feeding section, mixing section I, mixing section II, mixing section III and extruding zone equates that the screw thread parent is cylindric; It is conical that the head of rotor is; Have anti-glue groove on the rotor of feeding section back.Front end is the good fluidity that conical rotor makes elastomeric compound, guarantees to extrude steady quality.Anti-glue groove prevents that sizing material from overflowing from the rotor rear.
The screwing element of the feeding section of rotor, kneading section, mixing section I, mixing section II, mixing section III and extruding zone is dismountable to be installed on the mandrel of rotor, and kneading section, mixing section I, mixing section II and mixing section III can change at epitrochanterian distributing order.This cordwood combination is convenient to make, installation, maintenance.Change the requirement that distributing order can adapt to different material, technique and goods.
On the rotor along sizing material direction of advance arrange successively feeding section, mixing section I, kneading section, transportation section I, mixing section II, transportation section II, mixing section III and extruding zone.This distributing order melting effect is best.
Transportation section I and transportation section II are double threads, and pitch reduces by before backward, have section I screw channel and section II screw channel perpendicular to screw thread on both spiral shell ribs.The pitch of transportation section I and transportation section II diminishes by before backward, in convey materials, also has compaction; The transportation section I of spiral shell rib fluting and transportation section II make and produce the material exchange between the adjacent thread groove, some material diversion is in adjacent thread groove, constantly cut apart, mixed, refluxed, mixing is even, main shear action occurs near the barrel wall place, heat-transfer effect is good, and material heats up little, stable operation.
The feeding section screw thread is triangle thread.The triangle thread root is thick, has improved mechanical strength and the rigidity of feeding section.
A kind of plasticating equipment that adopts any one dual-rotor structure among the claim 1-7, comprise the fixedly frame of machine barrel, and charging mechanism, power drive system, cooling system and control system, rubber compound continuous mixing dual-rotor structure of the present invention is installed in the machine barrel; The rotor rear end connects power drive system, and charging mechanism is communicated with the spout on the machine barrel above machine barrel; Cooling water channel on the machine barrel connects cooling system; Control system connects cooling system, the PWTN charging mechanism of unifying.
Because the above-mentioned performance that rubber compound continuous mixing dual-rotor structure of the present invention has, it is continuous, efficient and high-quality mixing that mixing facilities of the present invention can carry out rubber, supports the use with the continuous plasticating equipment of niggerhead, can realize the niggerhead continuous mixing.
Machine barrel is the machine barrel of segmentation combination, on every section machine barrel cooling water channel is arranged.Each of machine barrel section is sealedly and fixedly connected successively and forms whole machine barrel together.Machine barrel segmentation combination is convenient to make, installs, changes and is safeguarded.
The machine barrel of segmentation combination adopts vertical split type structure.Vertically the machine barrel of split type structure is convenient to cleaning and the maintenance to machine barrel and rotor, and the convenient machine barrel that splits is observed the mixing state of each section and mixing degree, for research, improving equipment provides foundation.
The machine barrel front end connects head.
Charging mechanism comprises that a cover is used for adding the carbon black automatic weighing feeding device that is comprised of storage hopper and screw feeder of carbon black, one cover is used for adding the small powder automatic weighing feeding device that is comprised of storage hopper, agitating device hopper and screw feeder of various small powders, and a cover introduction plasticating equipment is extruded the film feeder of film; Carbon black feeding device, small powder feeding device and film feeder are communicated with the spout on the machine barrel.Under control system control, charging mechanism can accomplish that the compounding ingredients such as sizing material and carbon black, small powder add mixing facilities according to certain proportioning continuous and quantitative.
Advantage of the present invention is: by feeding section, kneading section, mixing section and the extruding zone of a pair of incorgruous screw thread of the present invention, part engagement, the parallel and compound rotor structure that the counter rotating rotor forms, realize rubber continuously, efficiently, high-quality is mixing.Adopt the mixing facilities of dual-rotor structure of the present invention under control system control, the compounding ingredients such as sizing material and carbon black, small powder add mixing facilities according to certain proportioning continuous and quantitative, elastomeric compound is extruded by head continuously, carry out continuous, efficient and high-quality mixing, support the use with the continuous plasticating equipment of niggerhead, can realize the niggerhead continuous mixing.
Description of drawings
Fig. 1 is the structural representation of an embodiment of dual-rotor structure of the present invention;
Fig. 2 is the structural representation that adopts an embodiment of the compound two-spool mixing facilities of Fig. 1;
Fig. 3 is the barrel section structural representation of Fig. 2 mixing facilities.
The specific embodiment
Accompanying drawings.
Fig. 1 dual-rotor structure is a pair of incorgruous screw thread, parallel, compound rotor 2 that counter rotating is identical with rotating speed, and threaded portion is the part engagement type.The rotor rear end connects power drive system, referring to Fig. 2.Rotor 2 is contained on the mandrel of rotor 2 from backward front feeding section 29, mixing section I 28, kneading section 27, transportation section I 26, mixing section II 25, transportation section II 24, mixing section III 23 and extruding zone 22 element housings, and cordwood combination is convenient to make, installation, maintenance.The head 21 of bell-shaped rotor is fixedly mounted on the mandrel front end, has the anti-glue groove 210 that prevents that sizing material from overflowing on the mandrel of feeding section 29 back.Feeding section 29 is that pitch is by the large helical pitch single head triangle thread structure that reduces gradually before backward.Mixing section I 28 is shearing rotor mixing elementses, and the one end is left-handed lug, nib, and the other end is the dextrorotation lug, nib, and shearing rotor mixing elements front end has the different left-handed lug, nib of two segment length in the present embodiment, and there is the different dextrorotation lug, nib of two segment length the rear end.Kneading section 27 adopts the toothed disc structure, and the toothed disc end face on two roots rotors 2 of kneading section 27 is relative, leaves the gap.Mixing section II 25 is meshing rotor mixing elementses, and long spiral lug, nib and short spiral lug, nib are arranged on it, and a long spiral lug, nib is arranged between the spiral lug, nib of two weak points on the meshing rotor mixing elements in the present embodiment.Mixing section III 23 is large helical pitch rotor mixing elementses, and two sections that spiral shell rib is different by direction of rotation on it, helical angle is different are threaded and form, and on the large helical pitch rotor mixing elements two spiral shell ribs are arranged in the present embodiment.Extruding zone 22 is double threads, and extruding zone 22 latter part of pitch reduce gradually by before backward, and front portion pitch equates.Transportation section I 26 and transportation section II 24 are double threads, and pitch reduces gradually by before backward, have section I screw channel 261 and section II screw channel 241 perpendicular to screw thread on both spiral shell ribs.The thread depth of feeding section 29, mixing section I 28, mixing section II 25, mixing section III 23, transportation section I 26, transportation section II 24 and extruding zone 22 equates that the screw thread parent is cylindric.
Rubber compound continuous mixing dual-rotor structure of the present invention can realize that rubber is continuous, efficient, high-quality is mixing.
Fig. 2 is a kind of structural representation of mixing facilities that adopts the dual-rotor structure embodiment of Fig. 1.The machine barrel 3 of this apparatus embodiments surrounds compound birotor 2.Motor 63 by decelerator 62 with transmission of power to distributor 61, compound birotor 2 rear ends connect the output shaft of distributor 61, distributor 61 drives a pair of incorgruous screw thread, part engagement, parallel rotor 2 incorgruous constant speed rotations.The motor 63 of power drive system, decelerator 62 and distributor 61 are fixed on the frame 7.Machine barrel 3 front ends are fixedly connected with head 1, and the rear end is fixedly connected with the housing of distributor 61, and the front portion of machine barrel 3 and middle part are supported by the cylinder support that is fixed on the frame 7.
Charging mechanism comprises three parts: introduce the film feeder 5 that plasticator is extruded film, be used for adding the carbon black automatic weighing feeding device that is formed by storage hopper and screw feeder of carbon black, be used for adding the small powder automatic weighing feeding device that is formed by storage hopper, agitating device hopper and screw feeder of various small powders, carbon black and small powder feeding device 4 expression carbon black automatic weighing feeding device and small powder automatic weighing feeding device two parts among Fig. 2.Charging mechanism is above machine barrel 3, and three parts of charging mechanism are communicated with the same spout 341 on the machine barrel 3.The cooling water channel 311 that connects cooling system is arranged, referring to Fig. 3 on the machine barrel 3.Control system connects cooling system, the PWTN charging mechanism of unifying.Under control system control, charging mechanism can accomplish that the compounding ingredients such as sizing material and carbon black, small powder quantitatively add mixing facilities according to certain proportioning.
Shown in Figure 3 is the schematic diagram of the barrel section of Fig. 2 mixing facilities.Machine barrel 3 is sectionally assembled syndetons, each section is sealedly and fixedly connected successively and forms whole machine barrel 3 together, machine barrel 3 is comprised of 31 4 sections of feed zone machine barrel 34, mixing section I and kneading section machine barrel 33, mixing section II machine barrel 32, mixing section III and extruding zone machine barrels, and four sections machine barrels are corresponding to extruding zone 22 to transportation section II 24, mixing section III 23 to transportation section I 26, mixing section II 25 with feeding section 29, the mixing section I 28 of compound birotor 2 substantially.Machine barrel 3 segmentations combination is convenient to make, installs, changes and is safeguarded.Cooling water channel 311 is arranged on every section machine barrel, and cooling water enters cooling water channel 311 from cooling water channel entrance 331, flows out from cooling water channel outlet 332, and machine barrel 3 is cooled off.Dividing equally on the segmentation machine barrel of present embodiment adopts vertically is two split type structure, split type structure is convenient to cleaning and the maintenance of machine barrel 3 and rotor 2, the convenient machine barrel 3 that splits is observed the mixing state of each section and mixing degree, for research, improving equipment provides foundation, and the split type structure of segmentation machine barrel is not shown among the figure.
It is continuous, efficient and high-quality mixing that mixing facilities of the present invention can carry out rubber, supports the use with the continuous plasticating equipment of niggerhead, can realize the niggerhead continuous mixing.

Claims (9)

1. rubber compound continuous mixing dual-rotor structure, comprise a pair of incorgruous screw thread, parallel, compound rotor (2) that counter rotating is identical with rotating speed, the rotor rear end connects power drive system, it is characterized in that the threaded portion in a pair of compound rotor (2) is the part engagement, feeding section (29), kneading section (27), mixing section and extruding zone (22) are arranged on the rotor (2); Feeding section (29) is that pitch is by the large helical pitch one start screw structure that reduces before backward; Kneading section (27) adopts the toothed disc end face on two roots rotors relative, stays gapped toothed disc structure; Mixing section forms by three sections, mixing section I (28) is that an end has the different left-handed lug, nib of two segment length, the other end has the shearing rotor mixing elements of the different dextrorotation lug, nib of two segment length, mixing section II (25) is the spiral lug, nib that two weak points are arranged, article two, the meshing rotor mixing elements that a long spiral lug, nib is arranged between the spiral lug, nib of weak point, mixing section III (23) has two spiral shell ribs on being, two sections large helical pitch rotor mixing elementses that are threaded and form that the spiral shell rib is different by the screw thread rotation direction, helical angle is different; Extruding zone (22) is double thread, and its latter part of pitch reduces by before backward, and front portion pitch equates.
2. rubber compound continuous mixing dual-rotor structure according to claim 1, the thread depth that it is characterized in that feeding section (29), mixing section I (28), mixing section II (25), mixing section III (23) and extruding zone (22) equates that the screw thread parent is cylindric; It is conical that the head of rotor (21) is; Have anti-glue groove (210) on the rotor (2) of feeding section (29) back.
3. rubber compound continuous mixing dual-rotor structure according to claim 1, it is characterized in that kneading section (27), mixing section I (28), mixing section II (25) and the distributing order of mixing section III (23) on rotor (2) can change on the dismountable mandrel that is installed in rotor (2) of the screwing element of feeding section (29), kneading section (27), mixing section I (28), mixing section II (25), mixing section III (23) and extruding zone (22) of rotor.
4. rubber compound continuous mixing dual-rotor structure according to claim 1 is characterized in that rotor (2) is upper along sizing material direction of advance arrange successively feeding section (29), mixing section I (28), kneading section (27), transportation section I (26), mixing section II (25), transportation section II (24), mixing section III (23) and extruding zone (22).
5. rubber compound continuous mixing dual-rotor structure according to claim 4, it is characterized in that transportation section I (26) and transportation section II (24) are double threads, pitch reduces gradually by before backward, has section I screw channel (261) and section II screw channel (241) perpendicular to screw thread on both spiral shell ribs.
6. mixing facilities that adopts any one rubber compound continuous mixing dual-rotor structure among the claim 1-5, comprise the fixedly frame (7) of machine barrel (3), and charging mechanism, power drive system, cooling system and control system, it is characterized in that the rubber compound continuous mixing dual-rotor structure is installed in the machine barrel (3); The rotor rear end connects power drive system, and charging mechanism is communicated with the spout (341) on the machine barrel (3) in the top of machine barrel (3); Cooling water channel (311) on the machine barrel (3) connects cooling system; Control system connects cooling system, the PWTN charging mechanism of unifying.
7. the mixing facilities of employing rubber compound continuous mixing dual-rotor structure according to claim 6 is characterized in that machine barrel (3) is the machine barrel of segmentation combination, has cooling water channel (311) on every section machine barrel.
8. the mixing facilities of employing rubber compound continuous mixing dual-rotor structure according to claim 7 is characterized in that the machine barrel of segmentation combination adopts vertical split type structure.
9. the mixing facilities of employing rubber compound continuous mixing dual-rotor structure according to claim 6, it is characterized in that charging mechanism comprises that a cover is used for adding the carbon black automatic weighing feeding device that is comprised of storage hopper and screw feeder of carbon black, one cover is used for adding the small powder automatic weighing feeding device that is comprised of storage hopper, agitating device hopper and screw feeder of various small powders, and a cover introduction plasticator is extruded the film feeder (5) of film; Carbon black feeding device, small powder feeding device and film feeder (5) are communicated with the spout (341) on the machine barrel (3).
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