CN102166794A - 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
CN102166794A
CN102166794A CN201110026202XA CN201110026202A CN102166794A CN 102166794 A CN102166794 A CN 102166794A CN 201110026202X A CN201110026202X A CN 201110026202XA CN 201110026202 A CN201110026202 A CN 201110026202A CN 102166794 A CN102166794 A CN 102166794A
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CN
China
Prior art keywords
mixing
section
rotor
dual
machine barrel
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Granted
Application number
CN201110026202XA
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Chinese (zh)
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CN102166794B (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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Priority to CN201110026202XA priority Critical patent/CN102166794B/en
Publication of CN102166794A publication Critical patent/CN102166794A/en
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Publication of CN102166794B publication Critical patent/CN102166794B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/535Screws with thread pitch varying along the longitudinal axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/465Mixing; 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; 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
    • B29B7/488Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489Screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/60Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/74Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means 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
    • B29C48/40Means 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means 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
    • B29C48/40Means 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
    • B29C48/41Intermeshing counter-rotating screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/47Means 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/72Measuring, controlling or regulating

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 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 be used 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 the 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 all the time with improving for the research of mixing link.
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 shortcomings such as mixing quality instability.Therefore, realize that rubber mixing production efficient, high-quality serialization is the industry of rubber processing in decades technical staff's dream, this is again the emphasis of research and development as the rotor structure of mixing facilities core wherein.
So-called continuous mixing is meant the employing 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, following subsidiary engine and last subsidiary engine, and then by a linkage production line replacement, the structure of simplified apparatus widely, cut down the consumption of energy significantly, improve mix quality and stability, and realize the operation of safety, environmental protection easily.
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.Developments such as the U.S., Italy, Germany, produce the continuous mixer of various models, but these continuous mixing equipments only are applicable to plastics and have mobile sizing material that promptly sizing material must be Powdered or granular, and must shift to an earlier date premix with carbon black.In modern rubber industry is produced,,, carry out compressing tablet through tablet press machine then or through extruder for shaping so mainly still depending on banbury finishes the mixing of rubber in producing because raw material mainly is a niggerhead.Therefore, the continuous mixing of non-Powdered and crumb rubber is not truly also realized.
China's utility model patent, Granted publication CN2815670Y, " equipment of type is smelt in a kind of high polymer blend " 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 a 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, makes 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 sizing material mixing time weak point, mixing, shearing, drawing effect poor, be difficult to various batchings are scattered in the rubber fully equably, make shortcomings 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 the processing of rubber continuous mixing, 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, with the supporting use of 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 continuous mixing dual-rotor structure, comprise a pair of incorgruous screw thread, parallel, the incorgruous rotation compound rotor 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 is formed 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 big 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 big, mixing output height.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 shearing and peptizaiton, the opposite birotor of direction of rotation makes than homodromal birotor that material fluidity is better, conveying capacity is stronger, pressure is bigger, and two rotors rotate in opposite directions, 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, disperses, stirs and mixes, and is fully mixing.
Rubber continuous mixing dual-rotor structure of the present invention can realize that rubber is continuous, efficient, high-quality is mixing.
Feeding section is an one start screw, pitch by after reduce forward; 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, the spiral shell rib by screw thread rotation direction difference, helical angle is different two sections be threaded and form; Extruding zone is a double thread, its latter part of pitch by after reduce forward, preceding a part of pitch equates.Pitch by after the feeding section that reduces forward in the effect of carrying, also playing brokenly glue and further improving the sizing material plasticizing effect in the compacting material, 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, the material flow back of coming out is cut off by the toothed disc of another roots rotor kneading section.When the mixing rotor elements of shearing-type rotates, because two epitrochanterian lug, nibs working diameter when cooperating is in different size, formed velocity gradient, cause that material is in bigger the flowing of circumferencial direction, make material be subjected to bigger thrust, propulsive thrust, shearing and squeezing action from lug, nib, material between rotor, be subjected to collapsing and axially come and go, effects such as cutting, stirring, compounding ingredient is better disperseed, evenly distribute.Between the rib of engaging-in successively another engagement type element of the lug, nib of a meshing rotor mixing elements, the lug, nib external diameter is different with the linear velocity of lug, nib root rotation, and material is in strong kneading, shearing and the squeezing action of carrying out repeatedly that are subjected between the meshing rotor mixing elements and between rotor and the machine tube inner wall constantly changing.The forward screw thread of big helical pitch rotor mixing elements spiral shell rib pushes away material forward, 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 back part of extruding zone mainly plays compacting and conveying, and a preceding part 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 compound mode is convenient to make, installation, maintenance.Change distributing order and can adapt to different material, technology and product requirements.
Rotor upper edge 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, pitch by after reduce forward, have on both spiral shell ribs perpendicular to the section I screw channel of screw thread and a section II screw channel.The pitch of transportation section I and transportation section II by after diminish forward, in convey materials, also have 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 quality 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 a triangle thread.The triangle thread root is thick, has improved the 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 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 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, with the supporting use of 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 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 automatic weighing feeding device of being made up of storage hopper and screw feeder of carbon black of carbon black, one cover is used for adding the automatic weighing feeding device of being made up of storage hopper, agitating device hopper and screw feeder of small powder 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 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: feeding section, kneading section, mixing section and the extruding zone of the compound rotor structure of forming by a pair of incorgruous screw thread of the present invention, part engagement, parallel and incorgruous rotor, realize rubber continuously, efficiently, high-quality is mixing.The mixing facilities that adopts dual-rotor structure of the present invention is under control system control, 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, with the supporting use of 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, the incorgruous rotation compound rotor 2 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 from after forward 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 be contained on the mandrel of rotor 2, cordwood compound mode 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 be pitch by after the big helical pitch single head triangle thread structure that reduces gradually forward.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 big helical pitch rotor mixing elementses, on it spiral shell rib by the direction of rotation difference, helical angle is different two sections be threaded and form, on the big helical pitch rotor mixing elements two spiral shell ribs are arranged in the present embodiment.Extruding zone 22 is double threads, extruding zone 22 latter part of pitch by after reduce gradually forward, preceding a part of pitch equates.Transportation section I 26 and transportation section II 24 are double threads, pitch by after reduce gradually forward, have a section I screw channel 261 and a section II screw channel 241 on both spiral shell ribs perpendicular to screw thread.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 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 arrives distributor 61 by decelerator 62 with transmission of power, and compound birotor 2 rear ends connect the output shaft of distributor 61, and a pair of incorgruous screw thread of distributor 61 drivings, part engagement, parallel rotor 2 incorgruous constant speed are rotated.The motor 63 of power drive system, decelerator 62 and distributor 61 are fixed on the frame 7.The fixedly connected head 1 of machine barrel 3 front ends, fixedly connected with the housing of distributor 61 in the rear end, and the front portion of machine barrel 3 and middle part are by the machine barrel stent 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 automatic weighing feeding device of forming by storage hopper and screw feeder of carbon black of carbon black, be used for adding the automatic weighing feeding device of forming by storage hopper, agitating device hopper and screw feeder of small powder of various small powders, carbon black and the small powder feeding device 4 expression automatic weighing feeding device of carbon black and the automatic weighing feeding device of small powder 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 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 made up of for 31 4 sections 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 barrel, 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 inlet 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 the cleaning and the maintenance of machine barrel 3 and rotor 2, the convenient machine barrel 3 that splits is observed 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, with the supporting use of the continuous plasticating equipment of niggerhead, can realize the niggerhead continuous mixing.

Claims (10)

1. rubber continuous mixing dual-rotor structure, comprise a pair of incorgruous screw thread, parallel, the incorgruous rotation compound rotor (2) 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 the steep-lead thread structure; Kneading section (27) adopts the toothed disc structure; Mixing section is formed by three sections, and mixing section I (28) is the shearing rotor mixing elements, and mixing section II (25) is the meshing rotor mixing elements, and mixing section III (23) is big helical pitch rotor mixing elements.
2. rubber continuous mixing dual-rotor structure according to claim 1 is characterized in that feeding section (29) is an one start screw, pitch by after reduce forward; Toothed disc end face on two roots rotors of kneading section (27) is relative, leaves the gap; One end of mixing section I (28) 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; Mixing section II (25) 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 (23), the spiral shell rib by screw thread rotation direction difference, helical angle is different two sections be threaded and form; Extruding zone (22) is a double thread, its latter part of pitch by after reduce forward, preceding a part of pitch equates.
3. rubber continuous mixing dual-rotor structure according to claim 1 and 2 is characterized in that the thread depth of 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.
4. rubber continuous mixing dual-rotor structure according to claim 1 and 2, 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.
5. rubber continuous mixing dual-rotor structure according to claim 1 is characterized in that rotor (2) upper edge 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).
6. rubber continuous mixing dual-rotor structure according to claim 5, it is characterized in that transportation section I (26) and transportation section II (24) are double threads, pitch by after reduce gradually forward, have on both spiral shell ribs perpendicular to the section I screw channel (261) of screw thread and section II screw channel (241).
7. mixing facilities that adopts any one continuous mixing dual-rotor structure among the claim 1-6, 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 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.
8. the mixing facilities of employing continuous mixing dual-rotor structure according to claim 7 is characterized in that machine barrel (3) is the machine barrel of segmentation combination, has cooling water channel (311) on every section machine barrel.
9. the mixing facilities of employing continuous mixing dual-rotor structure according to claim 8 is characterized in that the machine barrel of segmentation combination adopts vertical split type structure.
10. the mixing facilities of employing continuous mixing dual-rotor structure according to claim 7, it is characterized in that charging mechanism comprises that a cover is used for adding the automatic weighing feeding device of being made up of storage hopper and screw feeder of carbon black of carbon black, one cover is used for adding the automatic weighing feeding device of being made up of storage hopper, agitating device hopper and screw feeder of small powder 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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CN102225315A (en) * 2011-06-10 2011-10-26 北京化工大学 Three-rotor continuous mixing unit with rotors arranged in straight line
CN104354236A (en) * 2014-11-14 2015-02-18 青岛科技大学 Tandem type continuous rubber mixing device
CN104441301A (en) * 2014-11-14 2015-03-25 青岛科技大学 Continuous serial-type rubber mixing method
CN110713663A (en) * 2019-11-11 2020-01-21 永一橡胶有限公司 Preparation method of tire curing bladder
CN111791459A (en) * 2020-07-31 2020-10-20 南通回力橡胶有限公司 Incongruous double helix desulfurization extruder
CN112549346A (en) * 2020-10-21 2021-03-26 青岛科技大学 Variable-gap rotor for internal mixer

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CN102225315A (en) * 2011-06-10 2011-10-26 北京化工大学 Three-rotor continuous mixing unit with rotors arranged in straight line
CN104354236A (en) * 2014-11-14 2015-02-18 青岛科技大学 Tandem type continuous rubber mixing device
CN104441301A (en) * 2014-11-14 2015-03-25 青岛科技大学 Continuous serial-type rubber mixing method
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CN110713663A (en) * 2019-11-11 2020-01-21 永一橡胶有限公司 Preparation method of tire curing bladder
CN111791459A (en) * 2020-07-31 2020-10-20 南通回力橡胶有限公司 Incongruous double helix desulfurization extruder
CN112549346A (en) * 2020-10-21 2021-03-26 青岛科技大学 Variable-gap rotor for internal mixer
CN112549346B (en) * 2020-10-21 2022-02-01 青岛科技大学 Variable-gap rotor for internal mixer

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