CN203427218U - Extruding machine of water-containing recycled plastic - Google Patents

Extruding machine of water-containing recycled plastic Download PDF

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Publication number
CN203427218U
CN203427218U CN201320351730.7U CN201320351730U CN203427218U CN 203427218 U CN203427218 U CN 203427218U CN 201320351730 U CN201320351730 U CN 201320351730U CN 203427218 U CN203427218 U CN 203427218U
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CN
China
Prior art keywords
exhaust
segment
depth
thread groove
compression
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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.)
Expired - Lifetime
Application number
CN201320351730.7U
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Chinese (zh)
Inventor
陈宜勇
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.)
FIDELITY PLASTIC MACHINERY Co Ltd SHANTOU
Original Assignee
FIDELITY PLASTIC MACHINERY Co Ltd SHANTOU
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Priority to CN201320351730.7U priority Critical patent/CN203427218U/en
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Publication of CN203427218U publication Critical patent/CN203427218U/en
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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
    • B29C48/54—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
    • B29C48/395—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
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The utility model discloses an extruding machine of water-containing recycled plastic. The extruding machine comprises a charging barrel and a driving device, wherein the charging barrel is internally provided with two screws rotating in reverse directions; the thread directions of the two screws are opposite and the two screws are mutually meshed; the front end of the charging barrel is provided with a feeding port, and the rear end of the charging barrel is connected with a mold head. The extruding machine is characterized in that each screw comprises a feeding section, a compression section, a plasticizing section and a plurality of exhausting-compressing-plasticizing sections in sequence from front to rear; each exhausting-compressing-plasticizing section is composed of a small exhausting section, a small compressing section and a small plasticizing section which are connected in sequence from front to rear; the position of the feeding port is corresponding to that of the feeding section; the parts, which are corresponding to all the small exhausting sections, of the side wall of the charging barrel are provided with exhaust ports; the front ends of the screws are connected with the charging barrel by virtue of shaft sleeves; water discharging gaps are arranged between the front ends of the screws and the shaft sleeves. The extruding machine disclosed by the utility model is suitable for processing the water-containing plastic, and has the advantages that after being cleaned, the recycled plastic wastes are added into the extruding machine from the feeding port without being dried, so that the field and time needed by the drying procedure can be omitted.

Description

Moisture recycled plastic extruder
Technical field
The utility model relates to extruder, is specifically related to a kind of moisture recycled plastic extruder.
Background technology
At present, in production, life process, produce a large amount of plastic refuses, after these plastic refuses are discarded in natural environment, cannot degrade, cause serious white pollution, welding.Recycling to plastic refuse, can reduce white pollution on the one hand, and protection of the environment, can economize on resources on the other hand, increases economic efficiency.The mode that plastic refuse is recycled, normally carries out extruding pelletization, the plastic grain that formation can be used by downstream industry to the plastic refuse reclaiming.
For recycled plastic being carried out to the plastic extruding pelletization unit of extruding pelletization, generally include extruder and prilling granulator; The plastics that reclaim are being carried out in the process of extruding pelletization, after generally plastic refuse being classified, be cut into small pieces, clean up and dried, join and in extruder, carry out mixing, plasticizing, the plastic melt forming is extruded from the die head of extruder, by prilling granulator, carry out granulation again, form plastic grain.Due to before recycled plastic is in joining extruder, must first dry, need large stretch of place, and expend the plenty of time, thereby whole plastics recovery granulation process efficiency be lower and dry operation, cost is higher.In addition, above-mentioned extruder generally adopts single screw extrusion machine, and because recycled plastic fritter weight is lighter and more open, thereby charging is smooth and easy not, and screw rod transmission difficulty is larger, affects plasticizing effect, and the plastic grain performance making is not ideal enough.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of moisture recycled plastic extruder, this moisture recycled plastic extruder can be processed moisture recycled plastic, after cleaning up, recycled plastic without drying, can directly join in this extruder, and charging is smooth and easy.The technical scheme adopting is as follows:
A kind of moisture recycled plastic extruder, comprise barrel and drive unit, in barrel, be provided with the screw rod of two incorgruous rotations, two screw rods hand of spiral is contrary and intermeshing, two screw rods is all in transmission connection with drive unit, barrel front end is provided with charging aperture, barrel rear end is connected with die head, it is characterized in that: described screw rod comprises feed zone, compression section, fluxing zone and a plurality of exhaust compression fluxing zone successively from A-P, and exhaust compression fluxing zone consists of the exhaust segment connecting successively from A-P, compression segment and plasticizing segment; On feed zone, the each several part thread groove degree of depth is consistent, on compression section, the thread groove degree of depth reduces gradually from A-P, on fluxing zone, the each several part thread groove degree of depth is consistent, and the thread groove degree of depth of compression section front end equates with feed zone, and the thread groove degree of depth of rear end, compression section equates with fluxing zone; In each exhaust compression fluxing zone, on exhaust segment, the each several part thread groove degree of depth is consistent, on compression segment, the thread groove degree of depth reduces gradually from A-P, on plasticizing segment, the each several part thread groove degree of depth is consistent, and the thread groove degree of depth of compression segment front end equates with exhaust segment, the thread groove degree of depth of compressing segment rear end with plastify segment and equate; In top exhaust compression fluxing zone, the thread groove degree of depth of exhaust segment is greater than fluxing zone, and in rear exhaust compression fluxing zone, the thread groove degree of depth of exhaust segment is greater than the plasticizing segment in adjacent previous exhaust compression fluxing zone; Described charging aperture is corresponding with feed zone position; Position corresponding with each exhaust segment on barrel sidewall is provided with exhaust outlet; Screw front end is connected with barrel by axle sleeve, between screw front end and axle sleeve, has drainage gap.
Above-mentioned moisture recycled plastic extruder is counter rotation twin screw extruder, and when recycled plastic is when charging aperture joins in barrel, two screw rods of incorgruous rotation can be involved in recycled plastic between two screw rods and backward by force to be carried, and charging and conveying are very smooth and easy; This extruder plastifies recycled plastic subsequently, and the plastic melt of formation is extruded through die head; The plastic melt of extruding through die head can be used for granulation.
Above-mentioned moisture recycled plastic extruder is applicable to water containing plastic to plastify, and the plastic refuse of recovery, after being cut into small pieces and cleaning up, can join in extruder from charging aperture without drying; When plastics materials is transported to compression section, two screw rods is gradually by plastics materials compacting, and water contained in plastics materials is extruded out, then from the drainage gap of barrel front end, discharges; When plastics materials enters the exhaust segment after it from fluxing zone or plasticizing segment, because the thread groove degree of depth becomes large suddenly, in barrel, space increases suddenly at this place, aqueous vapor in plastics materials is discharged from exhaust outlet rapidly, now barrel internal pressure is less, and the plastics materials having melted can not overflow.Like this, by the cooperation of compression section and drainage gap, can discharge most of aqueous water contained in the plastic refuse of recovery; By the cooperation of fluxing zone and a plurality of exhaust compression fluxing zone, can repeatedly plastify and the process of exhaust, plastics materials is fully plastified, and eliminating aqueous vapor wherein.
Preferably each screw rod is provided with two to five exhaust compression fluxing zones, and more preferably each screw rod is provided with three exhaust compression fluxing zones.
In a kind of concrete scheme, the equal along continuous straight runs setting of above-mentioned two screw rods and left and right are side by side; Charging aperture is located at the feed zone top of screw rod; On barrel sidewall, be provided with left and right two row's exhaust outlets side by side, the exhaust outlet on the left side is identical and corresponding one by one with exhaust segment quantity set on the screw rod on the left side, the exhaust outlet on the right is identical and corresponding one by one with exhaust segment quantity set on the screw rod on the right, and each exhaust outlet is all located on the upper side wall of barrel.
Conventionally, be also provided with an interflow cylinder between barrel rear end and die head, interflow cylinder has a diversion cavity, the open communication of diversion cavity front end and barrel rear end, and diversion cavity rear end is communicated with the material inlet of die head.In addition, between interflow cylinder and die head, be conventionally also provided with net exchanging device, before plastic melt enters die head, plastic melt filtered.
The utility model is by the cooperation of compression section and drainage gap, can discharge most of aqueous water contained in the plastic refuse of recovery, and by the cooperation of fluxing zone and a plurality of exhaust compression fluxing zone, can repeatedly plastify the process with exhaust, plastics materials is fully plastified, and eliminating aqueous vapor wherein, therefore be applicable to water containing plastic to process, the plastic refuse reclaiming is after cleaning up, without drying, can join in extruder from charging aperture, can save and dry the required place of operation and time, improve plastics recovery efficiency, reduce costs, and the utility model is counter rotation twin screw extruder, when recycled plastic is when charging aperture joins in barrel, two screw rods of incorgruous rotation can be involved in recycled plastic between two screw rods and backward by force to be carried, and charging and conveying are very smooth and easy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model preferred embodiment;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the structural representation of the screw rod on the left side in extruder shown in Fig. 2;
Fig. 4 is the structural representation of screw rod on the right in extruder shown in Fig. 2;
Fig. 5 is the structural representation of the front portion of extruder shown in Fig. 2.
The specific embodiment
As Figure 1-Figure 2, this moisture recycled plastic extruder comprises barrel 1 and drive unit (drive unit not shown in FIG.), in barrel 1, be provided with the screw rod 3 of two incorgruous rotations, two screw rods 3 hand of spirals are contrary and intermeshing, two screw rods 3 is all in transmission connection with drive unit, barrel 1 front end is provided with charging aperture 4, and barrel 1 rear end is connected with die head 5.
With reference to figure 1-Fig. 4, screw rod 3 comprises that from A-P feed zone 31, compression section 32, fluxing zone 33 and three exhaust compression fluxing zone 34(are followed successively by exhaust compression fluxing zone 34-1,34-2 and 34-3 successively), exhaust compression fluxing zone 34 consists of the exhaust segment 341 connecting successively from A-P, compression segment 342 and plasticizing segment 343; On feed zone 31, the degree of depth of each several part thread groove 35 is consistent, on compression section 32, the degree of depth of thread groove 35 reduces gradually from A-P, on fluxing zone 33, the degree of depth of each several part thread groove 35 is consistent, and the thread groove degree of depth of compression section 32 front ends equates with feed zone 31, the thread groove degree of depth of 32 rear ends, compression section equates with fluxing zone 33; In each exhaust compression fluxing zone 34, on exhaust segment 341, the degree of depth of each several part thread groove 35 is consistent, on compression segment 342, the degree of depth of thread groove 35 reduces gradually from A-P, on plasticizing segment 343, the degree of depth of each several part thread groove 35 is consistent, and the thread groove degree of depth of compression segment 342 front ends equates with exhaust segment 341, the thread groove degree of depth of compressing segment 342 rear ends with plastify segment 343 and equate; In top exhaust compression fluxing zone 34, the thread groove degree of depth of exhaust segment 341 is greater than fluxing zone 33, and in rear exhaust compression fluxing zone 34, the thread groove degree of depth of exhaust segment 341 is greater than the plasticizing segment 343 in adjacent previous exhaust compression fluxing zone 34; Charging aperture 4 is corresponding with feed zone 31 positions; Position corresponding with each exhaust segment 341 on barrel 1 sidewall is provided with exhaust outlet 7.With reference to figure 5, screw rod 3 front ends are connected with barrel 1 by axle sleeve 8, between screw rod 3 front ends and axle sleeve 8, have drainage gap 9.
With reference to figure 2, in the present embodiment, two equal along continuous straight runs settings of screw rod 3 and left and right are side by side; Charging aperture 4 is located at feed zone 31 tops of screw rod 3; On barrel 1 sidewall, be provided with the left and right every row of two row exhaust outlet 7(side by side and have three exhaust outlets 7), the exhaust outlet 7 on the left side is corresponding one by one with exhaust segment 341 set on the screw rod 3 on the left side, the exhaust outlet 7 on the right is corresponding one by one with exhaust segment 341 set on the screw rod 3 on the right, and each exhaust outlet 7 is all located on the upper side wall of barrel 1.Between barrel 1 rear end and die head 5, be also provided with an interflow cylinder 10, interflow cylinder 10 has a diversion cavity, the open communication of diversion cavity front end and barrel 1 rear end, and diversion cavity rear end is communicated with the material inlet of die head 5.Between interflow cylinder 10 and die head 5, be conventionally also provided with net exchanging device 11, before plastic melt enters die head 5, plastic melt filtered.
Brief description is the operation principle of this moisture recycled plastic extruder once: after the plastic refuse of recovery is cleaned up, through charging aperture 4, join in extruder; When plastics materials is transported to compression section 32, two screw rods 3 is gradually by plastics materials compacting, and most of water contained in plastics materials is extruded out, and then the drainage gap 9 of autonomous barrel 1 front end is discharged; When plastics materials process fluxing zone 33 or plasticizing segment 343, by extruder, it is plastified; When plastics materials enters the exhaust segment 341 after it from fluxing zone 33 or plasticizing segment 343, because the degree of depth of thread groove 35 becomes large suddenly, the interior space of barrel 1 increases suddenly at this place, aqueous vapor in plastics materials is discharged from exhaust outlet 7 rapidly, now barrel 1 internal pressure is less, the plastics materials having melted can not overflow, and the process of this plasticizing and exhaust repeats repeatedly (four plasticizings of plastics materials experience in extruder, three exhausts), makes plastics materials plasticizing; The plastic melt that die head 5 is extruded is communicated with the discharging opening of die head 5 by conveying pipeline 2(conveying pipeline 2 front ends) after, from conveying pipeline 2 rear ends, flow out.

Claims (2)

1. a moisture recycled plastic extruder, comprise barrel and drive unit, in barrel, be provided with the screw rod of two incorgruous rotations, two screw rods hand of spiral is contrary and intermeshing, two screw rods is all in transmission connection with drive unit, barrel front end is provided with charging aperture, barrel rear end is connected with die head, it is characterized in that: described screw rod comprises feed zone, compression section, fluxing zone and a plurality of exhaust compression fluxing zone successively from A-P, and exhaust compression fluxing zone consists of the exhaust segment connecting successively from A-P, compression segment and plasticizing segment; On feed zone, the each several part thread groove degree of depth is consistent, on compression section, the thread groove degree of depth reduces gradually from A-P, on fluxing zone, the each several part thread groove degree of depth is consistent, and the thread groove degree of depth of compression section front end equates with feed zone, and the thread groove degree of depth of rear end, compression section equates with fluxing zone; In each exhaust compression fluxing zone, on exhaust segment, the each several part thread groove degree of depth is consistent, on compression segment, the thread groove degree of depth reduces gradually from A-P, on plasticizing segment, the each several part thread groove degree of depth is consistent, and the thread groove degree of depth of compression segment front end equates with exhaust segment, the thread groove degree of depth of compressing segment rear end with plastify segment and equate; In top exhaust compression fluxing zone, the thread groove degree of depth of exhaust segment is greater than fluxing zone, and in rear exhaust compression fluxing zone, the thread groove degree of depth of exhaust segment is greater than the plasticizing segment in adjacent previous exhaust compression fluxing zone; Described charging aperture is corresponding with feed zone position; Position corresponding with each exhaust segment on barrel sidewall is provided with exhaust outlet; Screw front end is connected with barrel by axle sleeve, between screw front end and axle sleeve, has drainage gap.
2. moisture recycled plastic extruder according to claim 1, is characterized in that: the equal along continuous straight runs setting of described two screw rods and left and right are side by side; Charging aperture is located at the feed zone top of screw rod; On barrel sidewall, be provided with left and right two row's exhaust outlets side by side, the exhaust outlet on the left side is identical and corresponding one by one with exhaust segment quantity set on the screw rod on the left side, the exhaust outlet on the right is identical and corresponding one by one with exhaust segment quantity set on the screw rod on the right, and each exhaust outlet is all located on the upper side wall of barrel.
CN201320351730.7U 2013-06-19 2013-06-19 Extruding machine of water-containing recycled plastic Expired - Lifetime CN203427218U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320351730.7U CN203427218U (en) 2013-06-19 2013-06-19 Extruding machine of water-containing recycled plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320351730.7U CN203427218U (en) 2013-06-19 2013-06-19 Extruding machine of water-containing recycled plastic

Publications (1)

Publication Number Publication Date
CN203427218U true CN203427218U (en) 2014-02-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113348063A (en) * 2019-03-20 2021-09-03 三菱化学株式会社 Double-shaft extruder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113348063A (en) * 2019-03-20 2021-09-03 三菱化学株式会社 Double-shaft extruder

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Granted publication date: 20140212