CN106476159A - A kind of twin screw plastic processing all-in-one with gas purifying - Google Patents

A kind of twin screw plastic processing all-in-one with gas purifying Download PDF

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Publication number
CN106476159A
CN106476159A CN201611136874.5A CN201611136874A CN106476159A CN 106476159 A CN106476159 A CN 106476159A CN 201611136874 A CN201611136874 A CN 201611136874A CN 106476159 A CN106476159 A CN 106476159A
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CN
China
Prior art keywords
crush box
gear
box
conveying device
drainage screen
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
Application number
CN201611136874.5A
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Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Search Information Technology Co Ltd
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Zhengzhou Search Information Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhengzhou Search Information Technology Co Ltd filed Critical Zhengzhou Search Information Technology Co Ltd
Priority to CN201611136874.5A priority Critical patent/CN106476159A/en
Publication of CN106476159A publication Critical patent/CN106476159A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04Disintegrating plastics, e.g. by milling
    • B29B17/0412Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • 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
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0022Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04Disintegrating plastics, e.g. by milling
    • B29B2017/0424Specific disintegrating techniques; devices therefor
    • B29B2017/044Knives
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/52Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention discloses a kind of twin screw plastic processing all-in-one with gas purifying, including underframe, pulley and crush box, the upper end of described crush box is provided with pulverizing motor, the described upper end pulverizing motor is provided with gear wheel, the left and right sides of described gear wheel is all engaged with little gear, the lower end of described left side little gear connects the left rotary shaft in crush box, the lower end of described right side little gear connects the right spindle in crush box, the lower end of described crush box is provided with drainage screen, the lower end of drainage screen is connected with blanking channel, described conveying box be internally provided with screw conveying device and lower screw conveying device, the left end of upper screw conveying device and lower screw conveying device is provided with travelling gear, the left end of described gear is connected with conveying motor.The present invention designs advantages of simple in structure, uses convenient to operation, practicality is very high, and crushing effect is efficiently, time saving and energy saving, efficient and convenient, and granulation outcome is good, and production efficiency is high.

Description

A kind of twin screw plastic processing all-in-one with gas purifying
Technical field
The present invention relates to device of plastic processing field, specifically a kind of twin screw plastic processing with gas purifying All-in-one.
Background technology
The recycling of waste or used plastics and resource development, are derived from the heightened awareness to environment and resource, reduce waste and old Plastics are to the pollution of environment with a kind of mode of production of reducing the wasting of resources.The regeneration resource realizing waste plastics is to benefit the nation A favorable to the people major issue, according to measuring and calculating, often utilizes 1D to collect waste or used plastics, compared with processing raw material can energy saving more than 85%, section About processing charges 70-80%, is equivalent to 20 tons of oil of saving.Plastic processing is also known as plastics processing.It is by synthetic resin or to mould Material is converted into the polytechnic general name of plastic, is a larger production division in plastics industry.Plastic processing is general Including the dispensing of plastics, molding, machining, joint, modification and assembling etc..Afterwards four operations be plastics molded for product Or carry out after semi-products, it is also called plastics secondary operations.
The course of processing of plastics is extremely complex, and needs a lot of programs, for example cleaning, pulverizing, heating, conveying, pelletize Deng some current device of plastic processing job contents are single, and its structure design is simple, and production cost is higher, to waste or used plastics Processing effect bad, processing less efficient, impact plastic processing work efficiency, cause cost raise.Therefore, this area Technical staff provides a kind of twin screw plastic processing all-in-one with gas purifying, to solve in above-mentioned background technology The problem proposing.
Content of the invention
It is an object of the invention to provide a kind of twin screw plastic processing all-in-one with gas purifying, to solve The problem proposing in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of twin screw plastic processing all-in-one with gas purifying, including underframe, pulley and crush box, described pulley It is arranged on the lower end of underframe, described crush box is arranged on the upper end of underframe, the upper end of described crush box is provided with pulverizing motor, institute The upper end stating pulverizing motor is provided with gear wheel, and the left and right sides of described gear wheel is all engaged with little gear, described left lateral denticle The lower end of wheel connects the left rotary shaft in crush box, and the lower end of described right side little gear connects the right spindle in crush box, a described left side Some cutter are provided with rotating shaft and right spindle, the left and right sides of described crush box is provided with heater one, described The lower end of crush box is provided with drainage screen, and described drainage screen lower end left and right sides is provided with vibrator, the lower end of described drainage screen Be connected with blanking channel, the lower end of described blanking channel is connected with conveying box, described conveying box to be internally provided with screw rod defeated Send device and lower screw conveying device, the left end of described upper screw conveying device and lower screw conveying device is provided with driving cog Wheel, and two travelling gears all with gear to engaging, the left end of described gear is connected with conveying motor, the inside of described conveying box It is provided with heater two, the right-hand member of described conveying box is provided with chiller, and the right side of described chiller is provided with extrusion Shaped device, the right side of described extrusion molding apparatus is provided with discharging opening, and the upper end of described conveying box is provided with breather, described The upper end of breather is connected to the left side of crush box, and the right side of described breather is connected with air exhauster, the upper end of described air exhauster It is connected with gas cleaning plant.
As the further scheme of the present invention:Described pulley is arranged to self-locking pulley.
As the present invention further scheme:Described cutter are arranged to different length.
As the present invention further scheme:The left upper end of described crush box is provided with charging aperture.
As the present invention further scheme:Described drainage screen is arranged to bowl structure.
As the present invention further scheme:Described discharging opening is provided with three.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention designs advantages of simple in structure, uses convenient to operation, practicality is very high, this device busy When, first raw material is put in crush box from charging aperture, the cutter under the drive pulverizing motor, in left rotary shaft and right spindle Quick cutting and grinding are carried out to raw material, and during pulverizing, a pair of raw material of heater is heated, and can strengthen pulverizing Effect, improve the efficiency pulverized, crushed after little particle do not enter into conveying box through drainage screen from blanking channel, and not Then can stay to continue in crush box to be cut by the granule of drainage screen and pulverize, improve the yield rate after pulverizing, be conducive to moulding Material processed finished products quality raising, and can improve produce efficiency, entrance conveying box little particle convey motor in the presence of, Rotation with upper screw conveying device and lower screw conveying device is moved to right-hand member, and during movement, heater two is right Little particle is heated, and because during heating, plastics can produce dusty gass excitatory, air exhauster passes through breather Dusty gass are extracted out in crush box and conveying box, and is drained in the air after gas cleaning plant purifies, can It is protected from air to be contaminated, there is the effect of environmental protection, after eventually passing chiller cooling down, in extrusion molding dress It is shaped to graininess in the presence of putting, and from discharging opening out, this device crushing effect is efficiently, time saving and energy saving, efficient and convenient, and Granulation outcome is good, and production efficiency is high.
Brief description
Fig. 1 is the structural representation of the twin screw plastic processing all-in-one with gas purifying.
In figure:1- underframe, 2- pulley, 3- crush box, 4- pulverize motor, 5- little gear, 6- gear wheel, 7- left rotary shaft, 8- Right spindle, 9- cutter, 10- heater one, 11- drainage screen, 12- vibrator, 13- blanking channel, 14- conveying box, 15- are defeated Screw conveying device under power transmission machine, 16- gear, 17- travelling gear, the upper screw conveying device of 18-, 19-, 20- heater two, 21- chiller, 22- breather, 23- air exhauster, 24- gas cleaning plant, 25- extrusion molding apparatus, 26- discharging opening.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, a kind of twin screw plastic processing all-in-one with gas purifying, Including underframe 1, pulley 2 and crush box 3, described pulley 2 is arranged on the lower end of underframe 1, and described crush box 3 is arranged on underframe 1 Upper end, the upper end of described crush box 3 is provided with pulverizing motor 4, and the described upper end pulverizing motor 4 is provided with gear wheel 6, described big The left and right sides of gear 6 is all engaged with little gear 5, and the lower end of described left side little gear 5 connects the left rotary shaft 7 in crush box 3, institute State the right spindle 8 that the lower end of right side little gear 5 connects in crush box 3, described left rotary shaft 7 and right spindle 8 are provided with some Cutter 9, the left and right sides of described crush box 3 is provided with heater 1, and the lower end of described crush box 3 is provided with filtration Net 11, described drainage screen 11 lower end left and right sides is provided with vibrator 12, and the lower end of described drainage screen 11 is connected with blanking channel 13, the lower end of described blanking channel 13 is connected with conveying box 14, described conveying box 14 be internally provided with screw conveying device 18 and lower screw conveying device 19, the left end of described upper screw conveying device 18 and lower screw conveying device 19 is provided with transmission Gear 17, and two travelling gears 17 all with gear 16 to engaging, the left end of described gear 16 is connected with conveying motor 15, described Conveying box 14 be internally provided with heater 2 20, the right-hand member of described conveying box 14 is provided with chiller 21, described cooling The right side of device 21 is provided with extrusion molding apparatus 25, and the right side of described extrusion molding apparatus 25 is provided with discharging opening 26, described The upper end of conveying box 14 is provided with breather 22, and the upper end of described breather 22 is connected to the left side of crush box 3, described breather 22 right side is connected with air exhauster 23, and the upper end of described air exhauster 23 is connected with gas cleaning plant 24.
The operation principle of the present invention is:
The present invention relates to a kind of twin screw plastic processing all-in-one with gas purifying, during this device busy, first Raw material is put in crush box 3 from charging aperture, under the drive pulverizing motor 4, the cutter 9 in left rotary shaft 7 and right spindle 8 are right Raw material carries out quick cutting and grinding, and during pulverizing, one 10 pairs of raw materials of heater heat, and can strengthen pulverizing Effect, improve pulverize efficiency, crushed after little particle enter into conveying box through drainage screen 11 from blanking channel 13 14, and can not then be stayed by the granule of drainage screen 11 and in crush box 3, continue cut pulverizing, improve the finished product after pulverizing Rate, is conducive to the raising of plastic processing end product quality, and can improve the efficiency producing, and the little particle entering conveying box 14 is in conveying In the presence of motor 15, the rotation with upper screw conveying device 18 and lower screw conveying device 19 is moved to right-hand member, is moving During 2 20 pairs of little particles of heater heat, due to heating during plastics can produce pollution excitatory Gas, air exhauster 23 is extracted out in crush box 3 and conveying box 14 by 22 dusty gass of breather, and through gas purification dress It is drained in the air after putting 24 purifications, air can be protected from and be contaminated, there is the effect of environmental protection, eventually pass cooling After device 21 cooling down, in the presence of extrusion molding apparatus 25, it is shaped to graininess, and from discharging opening 26 out, this dress Put crushing effect efficiently, time saving and energy saving, efficient and convenient, and granulation outcome is good, production efficiency is high.
The present invention designs advantages of simple in structure, uses convenient to operation, practicality is very high, this device is in work When making, first raw material is put in crush box from charging aperture, the cutting under the drive pulverizing motor, in left rotary shaft and right spindle Knife carries out quick cutting and grinding to raw material, and during pulverizing, a pair of raw material of heater is heated, and can strengthen powder Broken effect, improve pulverize efficiency, crushed after little particle enter into conveying box through drainage screen from blanking channel, and Can not then be stayed by the granule of drainage screen and in crush box, continue cut pulverizing, improve the yield rate after pulverizing, be conducive to The raising of plastic processing end product quality, and the efficiency producing can be improved, enter the effect in conveying motor for the little particle of conveying box Under, the rotation with upper screw conveying device and lower screw conveying device is moved to right-hand member, heater during movement Two pairs of little particles heat, and because during heating, plastics can produce dusty gass excitatory, air exhauster passes through logical Trachea is extracted dusty gass out in crush box and conveying box, and is drained in the air after gas cleaning plant purifies, Air can be protected from be contaminated, there is the effect of environmental protection, after eventually passing chiller cooling down, be extruded into It is shaped to graininess in the presence of type device, and from discharging opening out, this device crushing effect is efficiently, time saving and energy saving, fast side Just, and granulation outcome is good, production efficiency is high.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.Any reference in claim should not be considered as limiting involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of description Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined Understandable other embodiment.

Claims (3)

1. a kind of twin screw plastic processing all-in-one with gas purifying, including underframe(1), pulley(2)And crush box (3)It is characterised in that described pulley(2)It is arranged on underframe(1)Lower end, described crush box(3)It is arranged on underframe(1)Upper End, described crush box(3)Upper end be provided with pulverizing motor(4), described pulverizing motor(4)Upper end be provided with gear wheel(6), Described gear wheel(6)The left and right sides be all engaged with little gear(5), described left side little gear(5)Lower end connect crush box(3) Interior left rotary shaft(7), described right side little gear(5)Lower end connect crush box(3)Interior right spindle(8), described left rotary shaft(7) And right spindle(8)On be provided with some cutter(9), described crush box(3)The left and right sides be provided with heater one (10), described crush box(3)Lower end be provided with drainage screen(11), described drainage screen(11)Lower end left and right sides is provided with vibration Device(12), described drainage screen(11)Lower end be connected with blanking channel(13), described blanking channel(13)Lower end be connected with defeated Send case(14), described conveying box(14)Be internally provided with screw conveying device(18)With lower screw conveying device(19), institute State screw conveying device(18)With lower screw conveying device(19)Left end be provided with travelling gear(17), and two transmissions Gear(17)All and gear(16)To engagement, described gear(16)Left end be connected with conveying motor(15), described conveying box (14)Be internally provided with heater two(20), described conveying box(14)Right-hand member be provided with chiller(21), described cold But device(21)Right side be provided with extrusion molding apparatus(25), described extrusion molding apparatus(25)Right side be provided with discharging opening (26), described conveying box(14)Upper end be provided with breather(22), described breather(22)Upper end be connected to crush box(3) Left side, described breather(22)Right side be connected with air exhauster(23), described air exhauster(23)To be connected with gas net for upper end Gasifying device(24), described pulley(2)It is arranged to self-locking pulley, described cutter(9)It is arranged to different length, described pulverizing Case(3)Left upper end be provided with charging aperture.
2. the twin screw plastic processing all-in-one with gas purifying according to claim 1 is it is characterised in that institute State drainage screen(11)It is arranged to bowl structure.
3. the twin screw plastic processing all-in-one with gas purifying according to claim 1 is it is characterised in that institute State discharging opening(26)It is provided with three.
CN201611136874.5A 2016-12-12 2016-12-12 A kind of twin screw plastic processing all-in-one with gas purifying Pending CN106476159A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108819031A (en) * 2018-06-25 2018-11-16 佛山市捷亚塑料五金制品有限公司 A kind of plastic products grinding device
CN110682472A (en) * 2019-08-29 2020-01-14 安徽超星新材料科技有限公司 Device for processing polyethylene particles by using waste double-wall corrugated pipe
CN111452246A (en) * 2019-11-09 2020-07-28 庞海峰 Granulator for plastic production
CN111605096A (en) * 2020-07-09 2020-09-01 陆敏娇 Environment-friendly granulator for production and processing of special engineering plastics

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526991A (en) * 1992-06-12 1996-06-18 Bacher; Helmut Apparatus for plasticizing thermoplastic synthetic plastics material
CN104175517A (en) * 2014-09-15 2014-12-03 无锡爱尼达新能源科技有限公司 Low-noise feeding device of injection molding extruder
CN105711055A (en) * 2016-03-13 2016-06-29 宁波绿华橡塑机械工贸有限公司 Broken plastic regeneration plasticizer
CN205497870U (en) * 2016-04-08 2016-08-24 吉林工商学院 Plastic products crushing and drying equipment
CN205572956U (en) * 2016-02-24 2016-09-14 宁波大学 High -efficient environmental protection plastics extruder
CN206287386U (en) * 2016-12-12 2017-06-30 国电康能科技股份有限公司 A kind of twin-screw plastic processing all-in-one with gas purifying

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526991A (en) * 1992-06-12 1996-06-18 Bacher; Helmut Apparatus for plasticizing thermoplastic synthetic plastics material
CN104175517A (en) * 2014-09-15 2014-12-03 无锡爱尼达新能源科技有限公司 Low-noise feeding device of injection molding extruder
CN205572956U (en) * 2016-02-24 2016-09-14 宁波大学 High -efficient environmental protection plastics extruder
CN105711055A (en) * 2016-03-13 2016-06-29 宁波绿华橡塑机械工贸有限公司 Broken plastic regeneration plasticizer
CN205497870U (en) * 2016-04-08 2016-08-24 吉林工商学院 Plastic products crushing and drying equipment
CN206287386U (en) * 2016-12-12 2017-06-30 国电康能科技股份有限公司 A kind of twin-screw plastic processing all-in-one with gas purifying

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108819031A (en) * 2018-06-25 2018-11-16 佛山市捷亚塑料五金制品有限公司 A kind of plastic products grinding device
CN110682472A (en) * 2019-08-29 2020-01-14 安徽超星新材料科技有限公司 Device for processing polyethylene particles by using waste double-wall corrugated pipe
CN111452246A (en) * 2019-11-09 2020-07-28 庞海峰 Granulator for plastic production
CN111605096A (en) * 2020-07-09 2020-09-01 陆敏娇 Environment-friendly granulator for production and processing of special engineering plastics

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Application publication date: 20170308

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