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CN102228817A - Conical tri-rotor continuous mixing unit with rotors in linear arrangement - Google Patents

Conical tri-rotor continuous mixing unit with rotors in linear arrangement Download PDF

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Publication number
CN102228817A
CN102228817A CN2011101546866A CN201110154686A CN102228817A CN 102228817 A CN102228817 A CN 102228817A CN 2011101546866 A CN2011101546866 A CN 2011101546866A CN 201110154686 A CN201110154686 A CN 201110154686A CN 102228817 A CN102228817 A CN 102228817A
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CN
China
Prior art keywords
mixing
rotor
rotors
conical
adopted
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Pending
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CN2011101546866A
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Chinese (zh)
Inventor
王克俭
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
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Priority to CN2011101546866A priority Critical patent/CN102228817A/en
Publication of CN102228817A publication Critical patent/CN102228817A/en
Pending legal-status Critical Current

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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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
    • 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
    • B29B7/484—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 with two shafts provided with screws, e.g. one screw being shorter than the other
    • 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
    • B29B7/485—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 with three or more shafts provided with 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
    • B29B7/34—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
    • B29B7/487—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 with consecutive casings or screws, e.g. for feeding, discharging, mixing
    • 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
    • B29B7/582—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
    • 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
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/826—Apparatus therefor
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • 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
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps

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

Abstract

The invention provides a conical tri-rotor continuous mixing unit with rotors in linear arrangement, mainly comprising a mixing part and an exhausting part and a single-order or dual-order mode is adopted in the unit. The mixing part mainly comprises a charging device, a cylinder, conical rotors, a heating and cooling device and a driving device; the central lines of the three conical rotors for mixing are in the same plane and form fixed cone angles in linear arrangement in installation; the outer diameter outlines of the three rotors are tapered and each motor is provided with a charging segment and a mixing segment; the charging segment is of a spiral conveyance structure; and for a conical surface vertical to the outer outlines of the rotors, the mixing segment is of a cam shape, S shape or quadrangular rotor shape and the like. When the single-order mode is adopted, a spiral structure is adopted at the tail ends of the rotors so as to form a pressure to transmit materials to a machine head; and when the dual-order mode is adopted, mixing materials enter into the next-order screw extruder by a valve to form a pressure to transmit the materials to the machine head. For the two modes, the machine head suitable for a cavity is utilized to carry out pelleting or molding, and for the purpose of intensifying the pressure, a melt pump can be connected with the machine head. The three rotors can rotate at the same speed or different speeds, and when the three motors rotate, multiple shearing areas, stretching areas and kneading areas are formed, thus the materials among the rotors are exchanged frequently, thereby improving the plasticating performance, the melting performance and the dispersion performance effectively, shortening the processing time and improving the yield. The mixing unit is used for mixing, pelleting and other processes in processing rubbers, coatings, propellants, explosives, paper pulps, plastics, foods, pharmacy, feeds and the like.

Description

The taper triple-spool continuous mixing unit that the rotor yi word pattern is arranged
Technical field
The present invention relates to the taper triple-spool continuous mixing unit that the rotor yi word pattern is arranged, can be used for technical process such as mixing in the processing such as rubber, coating, propellant, explosive, paper pulp, plastics, food, pharmacy, feed and granulation.
Background technology
Mixing is decision high molecular products performance-critical process procedure, and particularly the contour viscous-elastic material of rubber being seemed is even more important.All even the stablizing that material is mixing is the key of guaranteeing the polymer product quality.Realize the evenly mixing technical equipment of mixing main dependence, comprise mill, banbury, two-rotor continuous mixer and screw extruder etc.Industrial, screw extruder is mainly used in the plasticizing processing of plastics and food and thermoplastic elastomer (TPE), and other three kinds then are mainly used in the mixing of component complex materials such as rubber, coating, explosive and propellant.Mill and banbury belong to batch-mixed equipment, and not only efficient is low, and are difficult to reach the different identical mixing quality of material in batches.
Two-rotor continuous mixer combines the mixed characteristic of banbury excellence, also with continuous running, is used widely on industrial mass manufacture.It mainly partly is made up of machine barrel, rotor, device for discharging etc.Mixing chamber on the machine barrel is that two that mutually connect, cross sections are circular hole, and material is subjected to the effect of shearing, pulverizing, kneading and the mixing of rotor in mixing chamber.Non-counter-rotating intermeshing rotor rotated mainly is made up of feeding section, mixing section and discharging section.The rotor feeding section is as the twin-screw of two non-engagements, and under the promotion of rotor feeding section screw thread, the material by charge door adds arrives mixing section.The rotor mixing section surface screw thread that helical angle has nothing in common with each other, stagger arrangement is arranged, material is in this fusion, mixing, plasticizing.Device for discharging can be controlled the open degree of Dump gate, reaches the purpose of control material time of staying in mixing chamber.
Patent 200910250493.3 is developed the conical three-screw rod extruder that in-line is arranged, and three screw rods all are conical screw, forms two and mediates the district.Relative double screw extruder, three-screw extruder has the characteristic of fricting shearing and two region of engagements, and material and screw rod have bigger contact area.Mixing fully, heat transmitting is good, melt capacity is big, exhaust capacity is good and temperature control is better, and have lower energy consumption.Screw rod is a conical screw simultaneously, and conical screw extruder screw rod tail diameter increases, and feeding quantity increases, and extrudes output to improve extruder.The screw rod tail diameter increases the bearing capacity that has also increased screw rod, and gear and bearing long service life help arranging thrust bearing and gear; Feeding section screw channel volume is big, easily adds the bulk density powder of larger volume, also helps the heat conduction, and easier realization is to material heating or cooling; The discharge zone screw diameter is little, and peripheral speed is less, and the shearing of generation is lower, and frictional heat is also less, fire damage dangerous little; The screw channel volume reduces gradually along extruding direction, and material obtains compression gradually, thereby makes screw channel be full of material sooner, guarantees material plasticizing gently continuously; Under same production capacity, back pressure can be lower.
Similarly, on the basis of birotor mixing roll, adopt three cone rotors to form new mixing roll.Three roots rotor yi word patterns are arranged, and not only improve output and energy-conservation, and mixed effect also can obviously improve, and can also be applicable to temperature-sensitive materials such as powder and PVC.
Summary of the invention
Be different from traditional double rotor mixing roll, continuous mixer of the present invention adopts three cone rotors to be yi word pattern and arranges, and forms the mixing structure of taper triple-spool, as Fig. 1.Mixing have three with cone rotor, and its center line is positioned at the certain cone angle yi word pattern arrangement of same plane one-tenth during installation.Each mixing rotor diameter profile is tapered by reducing greatly, has feeding section and mixing section, and feeding section adopts screw conveying structure; From perpendicular to the rotor outline conical surface, the mixing section structure presents typical rotor characteristics such as cam-shaped, S shape or tetragonous rotor type.
Further, be continuous mixing, the mass transport that mixes must be carried out granulation or moulding to head, promptly removing kneading part exceptionally also needs the discharge part.Like this, triple-spool continuous mixing unit partly is made up of mixing part and discharge.The complete unit of Xing Chenging can be a single-order for this reason, also can be two rank.
Single-order triple-spool continuous mixer is exactly that rotor is made up of non-engaging spiro rod feeding section and mixing rotor section and screw rod discharge zone successively; material is added continuously and is mixing and be discharged to head through the transportation section pressure and carry out granulation or moulding, and the head cavity structure depends on the outlet article shape.For improving outlet discharge pressure, also can connect gear pump before the head.
The triple-spool continuous mixing unit such as the Fig. 1 on two rank mainly contain mixing part and discharge and partly form.In first rank non-engaging spiro rod feeding section and mixing rotor section are manufactured an integral body, material is added continuously and is mixing, is discharged to second rank through the adjustable discharge valve of aperture endways.The aperture control discharge rates of valve and the degree of filling on formation second rank, build-up pressure, the mixing intensity of change mixer.Second rank can be screw extruders, adopt to be fit to the screw-rod structure that fused materials adds, and carry out granulation or moulding through screw rod transmission to head, and the head cavity structure depends on the outlet article shape.For improving outlet discharge pressure, also can connect gear pump before the head.
During the operation of triple-spool mixing roll, add material at charge door, to mixing rotor section, making full use of effectively, rotor structure carries out mixing repeatedly and plasticates through helical feed.Because three rotors are arranged, strong drawing zone between rotor and kneading district are multiplied.Rotor mixing section of the present invention is taper, and is big near the feeding section diameter, little near the discharge zone diameter.Correspondingly, the machine barrel that comprises rotor also is to be combined to form by three cones.Except that conventional rotors the variation of circumferential and axial structural cycle, the cone rotor diameter will produce axial compression kneading effect and strengthen axial conveying effect from large to small, promote mixed material to move downstream.Therefore can obviously improve melting effect and improve output, have the effect of energy-saving and emission-reduction.
Simultaneously, the cone rotor tail diameter increases, and feeding quantity increases, and has also improved output; Increased the rotor bearing capacity, gear and bearing long service life help arranging thrust bearing and gear; Big near the feeding section volume, easily add the bulk density powder of larger volume, also help the heat conduction, easier realization is to material heating or cooling; Volume near discharge zone is little, and peripheral speed is less, and the shearing of generation is lower, and frictional heat is also less, fire damage dangerous little; Along with rotor diameter reduces gradually, material obtains compression gradually, thereby makes screw channel be full of material sooner, guarantees that material is gently mixing continuously; Under same production capacity, back pressure can be lower.Like this, such mixing roll also can be used for temperature-sensitive materials such as powder and PVC.
Description of drawings
The taper triple-spool continuous mixing unit structural representation that Fig. 1 arranges for the rotor yi word pattern
The 1-motor, 2-slows down and distributor box, the 3-machine barrel, the 4-feeding device, the 5-heater, the 6-cone rotor,
7-rotor cooling device, the 8-motor, the 9-reduction box, the 10-machine barrel, the 11-heater, the 12-screw rod,
The 13-head, the 14-discharge valve, 15-connects cylindrical shell.
Fig. 2 arranges schematic diagram for three rotors that yi word pattern is arranged
Fig. 3 adopts the sectional schematic diagram of cam face for the rotor mixing section
Fig. 4 adopts the sectional schematic diagram of S shape rotor for the rotor mixing section
Fig. 5 adopts the sectional schematic diagram of tetragonous rotor for the rotor mixing section
Specific embodiments
The implementation case is the taper triple-spool continuous mixing unit on two rank.
The taper triple-spool continuous mixing unit that the cone rotor yi word pattern is arranged can be that taper triple-spool continuous mixer connecting screw rod extruder is formed, and sees Fig. 1.Mixing part mainly comprises: motor 1, slow down and distributor box 2, and machine barrel 3, feeding device 4, heater 5, cone rotor 6, rotor cooling device 7 is formed.The screw rod extruding part comprises: motor 8, and reduction box 9, machine barrel 10, heater 11, screw rod 12, machine head port mould 13 is formed.Connect by cylindrical shell 15 between mixing part and the screw rod extruding part, wherein be provided with the adjustable discharge valve 14 of aperture.The transmission device of motor 1, deceleration and distributor box 2 component devices.
Mixing part is with three cone rotors, and its center line is positioned at same plane and becomes certain cone angle yi word pattern to arrange during installation.Each mixing rotor diameter profile is tapered by reducing greatly, has feeding section and mixing section, and feeding section adopts screw conveying structure; From perpendicular to the rotor outline conical surface, the mixing section structure presents typical rotor characteristics such as cam-shaped, S shape or tetragonous rotor type.
The operation principle of this continuous mixing unit is: motor 1 drives the rotation of reduction box power shaft, carries out the distribution of moment of torsion and rotating speed in the reduction box 2 and rotates in machine barrel by three cone rotors 6 of three output shafts drives.Three cone rotors 6 are regulated internal temperature by terminal cooling system.Rotor has non-meshing spiral transportation section and rotor-type mixing section, and is installed in the machine barrel 3, and machine barrel is regulated external temperature under heater 5 effects.Material adds in the machine barrel 3 through feeding device 4, arrives mixing rotor section through helical feed.The heat that dependence is imported into from machine barrel, the shearing of rotor, stretching and extruding kneading effect, material plastifies and mixes.Mixing sufficient material through discharge valve 14 be connected cylindrical shell 15 and enter the screw rod extruding part, build-up pressure is extruded through head 13 under the helical feed effect, carries out granulation or moulding.For further improving pressure, can insert Melt Pump before the head.
Three rotor mixing sections are non-engagements, therefore can be with speed or differential, and the direction of rotation of three rotors can be carried out various combination.For this reason, can adopt integrated deceleration and distributor box, also can adopt separate type reduction box and distributor box to realize the rotor motion combination, need simultaneously to consider that the cone rotor axis is the requirement that cone angle is arranged.The rotor mixing section can make full use of various typical mixing rotor structures, as the cam-shaped of Fig. 3, the S shape of Fig. 4 and the tetragonous rotor type of Fig. 5 etc.
Because three rotors are arranged, the strong drawing zone between rotor, strong shear zone and strong crush zone are multiplied, between rotor the material exchange more frequent, make material plasticating in screw rod, homogenizing, the number of times of shearing is multiplied; This structure is mixing mutually compound with cone rotor axial compression kneading effect with triple-spool, the plasticating of equipment, fusion and dispersive property have more effectively been improved, shorten process time, had the characteristics of energy-saving and emission-reduction, also can be used for the mixing of temperature-sensitive materials such as powder and PVC.

Claims (2)

1. the taper triple-spool continuous mixing unit of rotor yi word pattern arrangement mainly partly is made up of mixing part and discharge, can adopt single-order or two rank form; Wherein mixing part mainly is made up of feeding device, machine barrel, cone rotor, heating-cooling device and transmission device, it is characterized in that: mixing have three with cone rotor, and its center line is positioned at the certain cone angle yi word pattern arrangement of same plane one-tenth during installation.
2. the taper triple-spool continuous mixing unit that rotor yi word pattern according to claim 1 is arranged, it is characterized in that: each mixing rotor diameter profile is tapered by reducing greatly, has feeding section and mixing section, and feeding section adopts screw conveying structure; From perpendicular to the rotor outline conical surface, the mixing section structure presents cam-shaped, S shape or and typical rotor characteristics such as tetragonous rotor type.
CN2011101546866A 2011-06-10 2011-06-10 Conical tri-rotor continuous mixing unit with rotors in linear arrangement Pending CN102228817A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103341921A (en) * 2013-06-24 2013-10-09 青岛裕盛源橡胶有限公司 Continuous double-helix asynchronous rubber powder plasticization device
CN111823536A (en) * 2020-03-23 2020-10-27 浙江华锚机械制造有限公司 Conical double rotor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2469988Y (en) * 2000-11-16 2002-01-09 周凤举 Double-shaft differential reverse rotary screw pair
WO2002076707A1 (en) * 2001-03-22 2002-10-03 Berstorff Gmbh Screw element for same-sense rotating multi-screw extruders
CN1644341A (en) * 2005-01-13 2005-07-27 华南理工大学 Multi-screwrod vibrating field induction plastic milling method and apparatus
CN202155159U (en) * 2011-06-10 2012-03-07 北京化工大学 Conical tri-rotor continuous mixing unit with linearly arranged rotors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2469988Y (en) * 2000-11-16 2002-01-09 周凤举 Double-shaft differential reverse rotary screw pair
WO2002076707A1 (en) * 2001-03-22 2002-10-03 Berstorff Gmbh Screw element for same-sense rotating multi-screw extruders
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Application publication date: 20111102