CN103770236A - Composite granulation screw extruder - Google Patents
Composite granulation screw extruder Download PDFInfo
- Publication number
- CN103770236A CN103770236A CN201210399233.4A CN201210399233A CN103770236A CN 103770236 A CN103770236 A CN 103770236A CN 201210399233 A CN201210399233 A CN 201210399233A CN 103770236 A CN103770236 A CN 103770236A
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- China
- Prior art keywords
- screw extruder
- screw
- cylindrical shell
- double screw
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- B29C48/63—Screws having sections without mixing elements or threads, i.e. having cylinder shaped sections
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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
- B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
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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
- B29C48/395—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
- B29C48/397—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 a single screw
-
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/51—Screws with internal flow passages, e.g. for molten material
- B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
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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
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
-
- 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
- B29C48/54—Screws with additional forward-feeding elements
-
- 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
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
Abstract
The invention relates to a composite granulation screw extruder. The composite granulation screw extruder is composed of a first-stage double screw extruder and a second-stage double screw extruder, the first-stage double screw extruder and the second-stage double screw extruder are arranged in a vertical manner, and the discharge port of the first-stage double screw extruder is connected with the feeding port of the second-stage double screw extruder. A material from the discharge end of the first-stage double screw extruder enters the second-stage double screw extruder from the feeding end of the second-stage double screw extruder, and is basically in plasticizing state, so decomposition caused by the long retention time of an accumulated material can be avoided. The above staged double screw extruder has good devolatilizing, mixing and conveying effects and can be adapted to present blend production high-density filling and coloring systems.
Description
Technical field
The present invention relates to a kind of compound screw extruder, be mainly used in the blending take its blend as feature of filling-modified, functional agglomerate, Masterbatch, mixing painted and that remove remaining low-molecular material is extruded, and belongs to Granulation Equipments technical field.
Background technology
At present, filling-modified, functional agglomerate, Masterbatch processing technology be generally: adopt High Rotation Speed mixer that amboceptor and various auxiliary agent are activated with the abundant blending of inorganic matter, dehydration, form half molten agglomerate, then adopt disintegrating machine to carry out fragmentation and complete granulation process with single screw rod or double screw extruder afterwards.The attention to environmental protection along with social progress and people, many modifying process are to solvent free improvement, more material modified water-baseds have also been proposed to stricter devolatilization requirement.On the other hand, sometimes for the requirement in some modification and processing technology, in blend melt or logistics, add some low molecular compounds so that amboceptor and other inorganic, organic reinforcer and various to contribute to processing or the various additives that make processed mixture have required final performance to carry out mixing, and after mixing process, need these unwanted volatilizable things to separate.In addition, some technological requirement is used and the immiscible low thing boiling of amboceptor, the auxiliary agent needing in product etc. is dissolved and separated from mixture, as adopt now common technical process and equipment, technological process complexity, time and effort consuming, has restriction to producing, and these processes all require to use new technique and equipment is transformed for this reason.
The single screw extrusion machine using at present, conventionally according to screw rod direction of rotation, the material being entered by conveying section compresses by certain compression ratio, oozes mixed, dispersion at mixing section, its devolatilization weak effect, need to through secondary or repeat to process dispersion, the devolatilization requirement that just can complete final performance for three times.And the double screw extruder using, the effective equipment that oozes being mixed, devolatilization process that can complete various blend logistics systems, but it is large that co-rotating twin screw is extruded the shear action of material, because material is under HTHP over a long time, particularly material is also at high temperature and completes and extrude completing after each performance its fluid, the product packing that some performance to product etc. all can have adverse influence, high temperature to extrude is poor, easily secondary water suction.Simultaneously double screw extruder self-cleaning is poor, causes residence time of material long, dispersion Combination is poor, high to manufacturing technique requirent, has therefore limited their application aborning separately.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of compound screw extruder for high concentration filling, coloring system with better devolatilization, mixing and conveying effect is provided.
The object of the present invention is achieved like this: a kind of compound screw extruder, it is made up of the first rank double screw extruder and second-order single screw extrusion machine, described the first rank double screw extruder and second-order single screw extrusion machine are arranged vertically mutually, and the discharging opening of the first rank double screw extruder is connected with the charging aperture of second-order single screw extrusion machine, described the first rank double screw extruder comprises drive motors I, shaft coupling I, gear-box I, drawing-in device and conveying mixing arrangement I, described conveying mixing arrangement I is made up of with the screw mandrel being arranged in cylindrical shell I cylindrical shell I, on described screw mandrel, be provided with screwing element and kneading member, described kneading member is positioned at screwing element front, described screw mandrel front end is connected with the output of gear-box I, described drive motors I is connected with gear-box I input by shaft coupling I, described drawing-in device is arranged at cylindrical shell I front top, described second-order single screw extrusion machine comprises drive motors II, shaft coupling II, gear-box II, carry mixing arrangement II and extrude cutoff device, described conveying mixing arrangement II is made up of with the screw rod being arranged in cylindrical shell II cylindrical shell II, described screw front end is connected with gear-box II output, described drive motors II is connected with gear-box II input by shaft coupling II, the described cutoff device of extruding is arranged at cylindrical shell II rear end, described cylindrical shell I rear end is connected with cylindrical shell II front portion.
The screw diameter of described the first rank double screw extruder is, screw rod effective L D ratio is 40, and screw rod centre-to-centre spacing is 52mm, depth of thread engagement 11mm, pitch 44-72mm double end; The screw diameter of described second-order single screw extrusion machine is that screw rod effective L D ratio is 7, single head.
Described the first rank double screw extruder discharge end is provided with fracture blade.
The first rank double screw extruder discharge end and second-order list fall and between the feed end of single extruder, filtering exhaust are set and are connected cover.
Compared with prior art, the present invention has following beneficial effect:
A kind of compound screw extruder of the present invention, it has better devolatilization, mixing and conveying effect, can adapt to current blend production high concentration filling, coloring system.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of compound screw extruder of the present invention.
Fig. 2 is the screw-rod structure schematic diagram of the first rank double screw extruder in Fig. 1.
Fig. 3 is the screw-rod structure schematic diagram of the second-order single screw extrusion machine in Fig. 1.
Wherein:
Drive motors I1
Shaft coupling I2
Gear-box I3
Drawing-in device 4
Devolatilization exhaust outlet 5
Cylindrical shell I6
Screw mandrel 9
Drive motors II10
Shaft coupling II11
Gear-box II12
Screw rod 13
Extrude cutoff device 14
Cylindrical shell II15.
The specific embodiment
Referring to Fig. 1 ~ Fig. 3, a kind of compound screw extruder of the present invention, it is made up of the first rank double screw extruder and second-order single screw extrusion machine, described the first rank double screw extruder and second-order single screw extrusion machine are arranged vertically mutually, and the discharging opening of the first rank double screw extruder is connected with the charging aperture of second-order single screw extrusion machine, described the first rank double screw extruder comprises drive motors I1, shaft coupling I2, gear-box I3, drawing-in device 4 and conveying mixing arrangement I, described conveying mixing arrangement I is made up of with the screw mandrel 9 being arranged in cylindrical shell I6 cylindrical shell I6, on described screw mandrel 9, be provided with screwing element 8 and kneading member 7, described kneading member 7 is positioned at screwing element 8 fronts, described screw mandrel 9 front ends are connected with the output of gear-box I3, described drive motors I1 is connected with gear-box I3 input by shaft coupling I2, described drawing-in device 4 is arranged at cylindrical shell I6 front top.The present embodiment use screw diameter be, screw rod effective L D ratio is 40,6 points of nine sections of temperature controls of cylindrical shell I, screw rod centre-to-centre spacing is 52mm, depth of thread engagement 11mm, pitch 44-72mm, screw head number 2.Cylindrical shell I 6 tops arrange 4 one of drawing-in devices, 5 three of devolatilization exhaust outlets.
Described second-order single screw extrusion machine comprises drive motors II10, shaft coupling II11, gear-box II12, carries mixing arrangement II and extrude cutoff device 14, described conveying mixing arrangement II is made up of with the screw rod 13 being arranged in cylindrical shell II15 cylindrical shell II15, described screw rod 13 front ends are connected with gear-box II12 output, described drive motors II10 is connected with gear-box II12 input by shaft coupling II11, the described cutoff device 14 of extruding is arranged at cylindrical shell II15 rear end, and described cylindrical shell I6 rear end is connected with cylindrical shell II15 front portion.The present embodiment has been used screw diameter to be, screw rod effective L D ratio is 7, and cylindrical shell II is divided two sections of temperature controls, screw head number 1.
Fracture blade can be installed or do not installed to described the first rank double screw extruder discharge end, specifically depending on material.And between the first rank double screw extruder discharge end and second-order list fall the feed end of single extruder, filtering exhaust is set and is connected cover.
Operation principle:
According to technological requirement, the first rank, the each zone temperatures of second-order are set, when intensification reaches set temperature, starter motor, by a certain amount of, powder and mixture are added in the charge door of the first rank double screw extruder, after the premix of the first five section of cylindrical shell inner high voltage, blend fluid flows to the 6th section of exhaust outlet and carries out pre-devolatilization, can remove 50% ~ 60% fugitive constituent, when nine sections of exhaust outlets of blend fluid to the, carry out secondary vacuum exhaust, can remove 30% ~ 40% fugitive constituent.The fluid that has removed fugitive constituent, by carrying screwing element to send into second-order single screw extrusion machine, completes removing of last a small amount of fugitive constituent therebetween, and what enter second-order partly plastifies object, and cryogenic high pressure, from discharging opening to extruding pelletization system, completes whole processing technology.
Stepwise screw extrusion machine of the present invention is a kind of effectively production equipment, it is by screw rod function, make blend fluid be in high pressure blending, disperse, under melting and the state higher than volatile component temperature, carry out one and multiple exhaust sections, in the time that this pressure reduces suddenly or is negative pressure, the low thing boiling, hydrone and low-molecular material sharply gasify, breaking through the resistance of melt parcel discharges outside body with gaseous state, the requirement of the visual product of these processes is through repeating several times, can make residual volatile matter content in melt be down to minimum, the blend that devolatilization process completes enters extruding and granulating equipment, complete into granule product, make blend improve packing, can be by secondary moisture absorption moisture content, guarantee product processing technique requirement and stored the needs that transport.
Claims (4)
1. a compound screw extruder, it is characterized in that: it is made up of the first rank double screw extruder and second-order single screw extrusion machine, described the first rank double screw extruder and second-order single screw extrusion machine are arranged vertically mutually, and the discharging opening of the first rank double screw extruder is connected with the charging aperture of second-order single screw extrusion machine, described the first rank double screw extruder comprises drive motors I(1), shaft coupling I(2), gear-box I(3), drawing-in device (4) and conveying mixing arrangement I, described conveying mixing arrangement I is by cylindrical shell I(6) and be arranged at cylindrical shell I(6) in screw mandrel (9) form, on described screw mandrel (9), be provided with screwing element (8) and kneading member (7), described kneading member (7) is positioned at screwing element (8) front, described screw mandrel (9) front end and gear-box I(3) output be connected, described drive motors I(1) by shaft coupling I(2) with gear-box I(3) input is connected, described drawing-in device (4) is arranged at cylindrical shell I(6) front top, described second-order single screw extrusion machine comprises drive motors II(10), shaft coupling II(11), gear-box II(12), carry mixing arrangement II and extrude cutoff device (14), described conveying mixing arrangement II is by cylindrical shell II(15) and be arranged at cylindrical shell II(15) in screw rod (13) form, described screw rod (13) front end and gear-box II(12) output is connected, described drive motors II(10) by shaft coupling II(11) with gear-box II(12) input is connected, the described cutoff device (14) of extruding is arranged at cylindrical shell II(15) rear end, described cylindrical shell I(6) rear end and cylindrical shell II(15) front portion is connected.
2. a kind of compound screw extruder according to claim 1, it is characterized in that: the screw diameter of described the first rank double screw extruder is 62mm, screw rod effective L D ratio is 40, and screw rod centre-to-centre spacing is 52mm, depth of thread engagement 11mm, pitch 44-72mm double end; The screw diameter of described second-order single screw extrusion machine is 150mm, and screw rod effective L D ratio is 7, single head.
3. a kind of compound screw extruder according to claim 1 and 2, is characterized in that: described the first rank double screw extruder discharge end is provided with fracture blade.
4. a kind of compound screw extruder according to claim 1 and 2, is characterized in that: the first rank double screw extruder discharge end and second-order list fall and between the feed end of single extruder, filtering exhaust be set and be connected cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399233.4A CN103770236A (en) | 2012-10-19 | 2012-10-19 | Composite granulation screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399233.4A CN103770236A (en) | 2012-10-19 | 2012-10-19 | Composite granulation screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103770236A true CN103770236A (en) | 2014-05-07 |
Family
ID=50563230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210399233.4A Pending CN103770236A (en) | 2012-10-19 | 2012-10-19 | Composite granulation screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103770236A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774005A (en) * | 2019-01-24 | 2019-05-21 | 武汉高正新材料科技有限公司 | A kind of PVDF backboard film forming process |
| CN109955458A (en) * | 2019-04-09 | 2019-07-02 | 合肥工业大学 | A kind of preparation facilities and preparation method thereof of low volatility resin |
| CN110900871A (en) * | 2019-11-07 | 2020-03-24 | 湖南工业大学 | Double-stage die surface hot cutting device |
| CN114130303A (en) * | 2021-11-27 | 2022-03-04 | 南京创博机械设备有限公司 | TGIC high-efficiency devolatilization and melt extrusion granulation integrated processing method |
-
2012
- 2012-10-19 CN CN201210399233.4A patent/CN103770236A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109774005A (en) * | 2019-01-24 | 2019-05-21 | 武汉高正新材料科技有限公司 | A kind of PVDF backboard film forming process |
| CN109955458A (en) * | 2019-04-09 | 2019-07-02 | 合肥工业大学 | A kind of preparation facilities and preparation method thereof of low volatility resin |
| CN110900871A (en) * | 2019-11-07 | 2020-03-24 | 湖南工业大学 | Double-stage die surface hot cutting device |
| CN114130303A (en) * | 2021-11-27 | 2022-03-04 | 南京创博机械设备有限公司 | TGIC high-efficiency devolatilization and melt extrusion granulation integrated processing method |
| CN114130303B (en) * | 2021-11-27 | 2023-11-14 | 南京创博机械设备有限公司 | TGIC efficient devolatilization and melt extrusion granulation integrated processing method |
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| C06 | Publication | ||
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Application publication date: 20140507 |