CN104816398A - Double-heating granulation apparatus with application of recovered waste plastic films - Google Patents
Double-heating granulation apparatus with application of recovered waste plastic films Download PDFInfo
- Publication number
- CN104816398A CN104816398A CN201510169498.9A CN201510169498A CN104816398A CN 104816398 A CN104816398 A CN 104816398A CN 201510169498 A CN201510169498 A CN 201510169498A CN 104816398 A CN104816398 A CN 104816398A
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- China
- Prior art keywords
- machine barrel
- section cylinder
- pin
- waste plastic
- compression section
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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
- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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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
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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
- B29C48/68—Barrels or cylinders
- B29C48/681—Barrels or cylinders for single screws
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A double-heating granulation apparatus with the application of recovered waste plastic films relates to a plastic granulator. The invention provides a high-yield, energy-saving, high-quality double-heating granulation apparatus with the application of recovered waste plastic films. With exploitation and transformation of existing granulators as the center, the granulation apparatus provided by the invention is specially suitable for recovered polyethylene film materials. The granulation apparatus is provided with a cylinder. The cylinder is successively provided with a feeding section cylinder, a first compression section cylinder, a metering section cylinder and a second compression section cylinder. The feeding section cylinder is provided with a feed opening used for feeding waste plastic films. The feeding section cylinder is equipped with a solid screw. The first compression section cylinder is provided with a hollow screw, a solid pin and a hollow pin. A temperature detector is arranged inside the hollow pin. The top of the first compression section cylinder is provided with a modified additive addition opening. The metering section cylinder is provided with a hollow screw and an exhaust port. The second compression section cylinder is equipped with a hollow screw, a solid pin and a hollow pin. A temperature detector is disposed inside the hollow pin.
Description
Technical field
The present invention relates to plastic granulator, especially relate to the dual-heating type prilling granulator that waste plastic film is reclaimed in a kind of application.
Background technology
Along with the national development through note of China, plastic industry obtains unprecedented leap, according to not keeping full statistics, the apparent consumption of China's plastics in 2013 is more than 6,000 ten thousand tons, become the second-biggest-in-the-world plastics consumption big country being only second to the U.S., and China's plastics output only more than 2,000 ten thousand tons, all the other should be import and depend on regeneration cycle and use.
In plastics total amount, have the polyethylene of 48%, poly average life span is 1.5 ~ 2 years, that is to say, the annual polyethylene waste material produced is about 1,500 ten thousand tons, is only slightly less than the total amount of China's plastics-production, even exceedes and produces the original total amount of polyethylene.
Poly chemical stability is fairly good, and according to experts' analysis, it is degradable about needs 300 ~ 1000 years, will be then catastrophic as only done simple landfill.
China's agricultural mulching consumption of 2013, more than 1,750,000 tons, will cause the hardening soil to degenerate if do not cleared up, causing the significantly underproduction of wheat, cotton.
Have data to show, as used mulch film accumulation in 5 years will cause wheat yield 26% continuously, therefore the Ministry of Agriculture requires that agricultural film (mainly referring to mulch film and awning film) will accomplish basic reuse for 2015 in work outline.
Report according to authoritative magazine, annual about 600,000,000 tons of the solid waste of China, wherein Industrial Solid rescission 500,000,000 tons; Produce about 100,000,000 tons, rubbish, in solid waste, waste plastics accounts for 8% ~ 10% of total amount.
The olefin polymer such as polyethylene, polypropylene is typical thermoplastic, is easy to reclaiming and reuses, and has both been conducive to reducing discarded amount, and can reduce again the cost of plastics breach, rather well received, development prospect is good.
The waste polyethylene processing of reclaiming is simple, and the general single screw extrusion machine that adopts can be produced, and small investment, instant effect, economic benefits, thus the enterprise of little factory, family workshop type is as emerged rapidly in large numbersBamboo shoots after a spring rain, and spreads all over the place.
The waste polyethylene complicated reclaimed, high pressure, low pressure, linear polyethylene are difficult to usual physical separation methods sorting, and the impurity (such as PVC, PP, foamed plastic, dust, paper fiber etc.) mixing a lot of complicated is difficult to process.Current production status is the small enterprise of many regenerated plastics is improve the temperature that output then blindly improves granulation, Electromagnetic Heating temperature outside machine barrel often brings up to 450 DEG C, even more than 500 DEG C, cause a large amount of impurity to smoulder under anoxic conditions, plastic degradation becomes carbon, on the one hand plastic product quality is declined, produce a large amount of toxic and harmful on the other hand, cause severe contamination, and substantially adopt hand feed, work under bad environment, the occupational disease of workman happens occasionally.
Summary of the invention
The object of the present invention is to provide centered by the existing comminutor of Renewal and development, be specially adapted for the high yield of polyethylene recovery coating materials, the dual-heating type prilling granulator of waste plastic film is reclaimed in a kind of application that is energy-conservation, high-quality.
The present invention is provided with machine barrel, machine barrel and is provided with feeding section machine barrel, the first compression section machine barrel, metering section machine barrel, the second compression section machine barrel successively, feeding section machine barrel is provided with charge door, for adding waste plastic film, feeding section machine barrel is provided with solid screw, first compression section machine barrel is provided with cored screw, solid pin and hollow pin, in hollow pin, install hygrosensor, be provided with modified additive at the first machine barrel top, compression section and add mouth; Metering section machine barrel is provided with cored screw and exhaust outlet; Second compression section machine barrel is provided with cored screw, solid pin and hollow pin, in hollow pin, installs hygrosensor.
Filling heat-conductive oil in all cored screws.
The present invention mainly comprises: 1) adopt automatic foodstuff releasing apparatus blanking to form high production capacity full-automatic material-feeding system, replace artificial blanking.2) adopt taper blanking section that material can smooth and easyly be entered in prilling granulator.3) the large-scale screw rod of melting section and metering section adopts hollow type, injects the circulation of uniform temperature conduction oil, increases radiating surface, reduce operating temperature, realize low temperature and extrude.4) on machine barrel, arrange pin, improve plasticizing efficiency, and utilize hollow pin to control material actual temperature in prilling granulator cavity.5) open improved chemical in the first compression section and add mouth, modification is carried out to plastics.Also can increase the release position of improved chemical, such as secondary adds, to reach the balance of inside and outside lubrication (increase-volume) agent.
One of target of the present invention, namely reaches maximization, high production capacity.30 tons of regenerated plastics rice (existing usual single screw extrusion machine 24h connects output between 4 ~ 5 tons) are produced daily with every platform prilling granulator.The bulk density of the waste plastic film reclaimed is 0.11g/cm
3.Yield with 90% calculates, and must consume the polyethylene coating materials of 33 tons of net weight, about 330m
3, and general Single screw extrusion machine inlet capable is the round mouth of Ф 200mm, is almost impossible with artificial blanking.Thus the storing platform of the self-emptying of native system employing, be about to the plastic foil that cleaning dries, by the bottom of storing platform, horizontal self-emptying screw rod and the vertical discharge screw in platform discharging opening are installed, material is delivered to the feed hopper forcing blanking device, control discharge quantity by material quantitative uniform by regulating feeding spiro rod rotating speed and send into prilling granulator, under the condition that prilling granulator plasticizing function is enough, its production capacity depends on discharge quantity, and thus this link is first node of the present invention.
Taper blanking section: the feed zone of general single screw extrusion machine and melt zone, homogenizing zone are on same main shaft, adopt equidistantly deepen screw rod, feed end the spiral shell of spiral groove depth and discharge end deeply than the compression ratio of i.e. screw rod, blanking device and main frame is forced to be orthogonal (90 °), its splicing is limited in one's ability, force blanking device convey materials too much, pressure is excessive, then driving screw " locking ".The present invention adopts taper blanking section, and blanking segment length 1.8m, accounts for overall length 30%, and the import of blanking section exports large about 60mm than blanking section, and groove depth, by 5.5 ~ 6.0mm, is transitioned into 4.0m.Namely form certain compression ratio at feed zone, be beneficial to that coating materials compresses, shears in blanking section, preplasticizing.Because the import of taper blanking section is larger, blanking device feeding is forced with two at both-side opening, reach the object of high yield, for the splicing ability improving blanking section becomes this section of steady conveying of material to adopt double end conveying screw thread, the machine barrel of the section of blanking simultaneously adopts structure (i.e. two semicircle tippings, layback 24 grooves in detachable machine barrel, the wide 30mm of every bar of disparting type, dark 8mm, to increase the conveying space of material.
Dual-heating type screw rod, general single screw extrusion machine, the heat energy source of plastics plastifying fusion is the Resistant heating formula Electromagnetic Heating of machine barrel appearance on the one hand, i.e. electric heating heat supply, on the other hand the shearing of bolt rotary, frictional heating, the single screw extrusion machine for processing plastic rice also needs to prevent to shear and overheatedly causes plastics, perforate in the middle part of screw rod, adds the hydronic mode of conduction oil by screw rod hollow.Produce reworked material with single screw extrusion machine, heat outside simple machine barrel, area of dissipation is limited, and plastics are non-conductors, and heat exchange is insufficient.Current technology often improves electric heating temperature for improving plasticizing rate, up to 400 ~ 500 DEG C, and poly fusing point is low, density is 105 DEG C, and high density is about 130 DEG C, decomposition temperature is 310 DEG C, high-temperature heat supply causes local excessive to plastify, and decomposes degraded and causes regenerated plastics low quality, simultaneously, cause impurity wherein " to smoulder " carbonization, produce toxic and harmful.The present invention is directed to reworked material, design hollow screw, with conduction oil circulation, retain Electromagnetic Heating outside machine barrel in the same old way, be the novel prilling granulator of dual-heating type.Because regeneration coating materials all needs to dry through cleaning, its moisture content is generally about 25%, though through forcing blanking device extrusion dehydration, its moisture content is generally about 15%, a large amount of heat of gasification need be absorbed during the gasification of this part moisture content, thus can not because shearing, frictional heating and cause plastics to cross thermal degradation, this is the difference that the extruder produced with former rice has essence, makes internal heat type be heated as possibility.The operating temperature of conduction oil is generally at 320 DEG C; control to can be at 250 ~ 280 DEG C the mild heat that comminutor provides band buffering property; as overheated in sheared heating; then conduction oil becomes cooling agent, and if cavity temperature is lower than this temperature, then conduction oil plays heat effect; this dual-heating type heating process can reduce operating temperature; avoid polyethylene decomposition temperature, prevent the infringement to plastics in process, realize the principle that low temperature in plastic processes is extruded.
The useful mixing pin of the present invention, the reclaimed materials of regenerated plastics many components often, such as HDPE and LDPE mixing, some plastics objectionable intermingling, as PE and PVC, the mixed function of single screw extrusion machine is poor, thus the present invention adopts and install mixing pin inside machine barrel, to improve mixed effect, pin is got 4 spirals and is installed four circle pins after the first melting section, installs two circle pins, often enclose 6 at the second melting fluxing zone, the flow direction upset in melting process between liquefied melt with solid produces repeatedly strong mixing, and mixed effect can improve 2 in theory
36doubly, about 10
10doubly, in fact because the complex situations of material are each and unrealizedly mix cmpletely, the theoretical value that can not run into astronomical figures, but greatly improve mixed effect, improve plasticizing rate, increase substantially plasticizing quality, provide sound assurance to the plasticizing after strengthen material input quantity in limited spiro rod length and the confined space like this.
Modified additive adopts multiple spot to add, due to waste material complicated, the for a change quality of regenerated plastics rice, the compatible of different component plastics need be improved, add bulking agent, be also lubricant, lubricant can be divided into in-lubricant and external lubricant generally speaking, in-lubricant is conducive to reducing melt viscosity, is conducive to plasticizing and improves liquidity; Both can improve plasticizing rate, can not resistance be reduced again, reach energy-conservation object.And external lubricant can extend fusion time, prevent excessive plasticizing, thus the present invention adopts main frame and the first slave to divide add lubricant at 2, increase by the first fluxing zone and add the composite lubricant that this in-lubricant is master, major function accelerates plasticizing, reduces melt viscosity, improves output energy-conservation.Second is added point at first pair of machine inlet capable, the compound auxiliary based on external lubricant, postpones fusion time, prevents from plastifying excessive, improves the frictional force of melt and metal surface simultaneously.Multiple spot adding technology adopts different formulations according to the operating mode of different process section, reaches lubrication balance, improves the compatibility of different component in waste material, improves quality and the quality of reworked material product.Machine barrel of the present invention all adopts Technology of Steel Castings, after inner side sprays alloy by processing is rear in specialty requirement, and high temperature sintering process.And combine by two semi-cylindrical shapeds, disassembled being convenient to is keeped in repair.
Main-machine screw feeding section is solid, and back segment is hollow, welds after adopting heat treatment therebetween.
The conduction oil circulation of hollow screw adopts swivel seal, and swivel joint operating temperature more than 380 DEG C, circulating line can be connected through the pump housing by temperature control heat conduction fuel tank with special.
The mixing pin of machine barrel length is detachable, is convenient to maintenance, changes.
Transition is carried out between the double thread of feeding section and the single thread of rear end fluxing zone.
The structure that feeding section and the first fluxing zone machine barrel all adopt inwall to slot, two intersegmental grooves need docking, and transit to 0 at the gash depth of the first fluxing zone end, can dock with the first homogenizing zone.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of the embodiment of the present invention.
Detailed description of the invention
See Fig. 1, the embodiment of the present invention is provided with machine barrel, machine barrel and is provided with feeding section machine barrel 11, first compression section machine barrel 12, metering section machine barrel 13, second compression section machine barrel 14 successively, feeding section machine barrel 11 is provided with charge door 110, for adding waste plastic film, feeding section machine barrel 11 is provided with solid screw 111, first compression section machine barrel 12 is provided with cored screw 121, solid pin 122 and hollow pin 123, in hollow pin 123, install hygrosensor, be provided with modified additive at the first compression section machine barrel 12 top and add mouth 124; Metering section machine barrel 13 is provided with cored screw 131 and exhaust outlet 132; Second compression section machine barrel 14 is provided with cored screw 141, solid pin 142 and hollow pin 143, in hollow pin 143, installs hygrosensor.
Filling heat-conductive oil in all cored screws.
After the present invention's assembling, entrance point is connected with forcing blanking device, and side exit end is connected with first pair of machine, and secondary modified additive adds mouth and is connected with the pump housing of auxiliary agent supply system, realizes on-line debugging.
Automatically force blanking system by frequency modulation device, be adjusted to position content with one's lot and like step, slowly adjust and promote doses, when opening col, heating system is first adjusted to 400 DEG C, and conduction oil operating temperature is adjusted to 320 DEG C, progressively lower operating temperature again, current of electric of looking over one's shoulder, makes it within the scope of running current.
Start to inject modified additive after stable conditions, and adjust operating temperature, reach additive dosage, operating temperature, operating current three balance.
Product in debug process is collected in addition, after stable, the debugging product collected added and forces blanking device entrance, secondary twice-cooked stir-frying.
Claims (2)
1. the dual-heating type prilling granulator of waste plastic film is reclaimed in application, it is characterized in that being provided with machine barrel, machine barrel is provided with feeding section machine barrel, the first compression section machine barrel, metering section machine barrel, the second compression section machine barrel successively, feeding section machine barrel is provided with charge door, for adding waste plastic film, feeding section machine barrel is provided with solid screw, first compression section machine barrel is provided with cored screw, solid pin and hollow pin, in hollow pin, install hygrosensor, be provided with modified additive at the first machine barrel top, compression section and add mouth; Metering section machine barrel is provided with cored screw and exhaust outlet; Second compression section machine barrel is provided with cored screw, solid pin and hollow pin, in hollow pin, installs hygrosensor.
2. the dual-heating type prilling granulator of waste plastic film is reclaimed in application as claimed in claim 1, it is characterized in that filling heat-conductive oil in all cored screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169498.9A CN104816398A (en) | 2015-04-11 | 2015-04-11 | Double-heating granulation apparatus with application of recovered waste plastic films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169498.9A CN104816398A (en) | 2015-04-11 | 2015-04-11 | Double-heating granulation apparatus with application of recovered waste plastic films |
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| Publication Number | Publication Date |
|---|---|
| CN104816398A true CN104816398A (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510169498.9A Pending CN104816398A (en) | 2015-04-11 | 2015-04-11 | Double-heating granulation apparatus with application of recovered waste plastic films |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106003461A (en) * | 2016-06-08 | 2016-10-12 | 厦门川汉环保科技有限公司 | Gas protection and modified granulation integrated device for waste plastic recycling |
| CN108481603A (en) * | 2018-04-26 | 2018-09-04 | 杨传平 | A kind of device for modified plastics production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0299241A2 (en) * | 1987-06-30 | 1989-01-18 | PIRELLI CAVI S.p.A. | Extruder for polymeric materials |
| JP2000108172A (en) * | 1998-10-06 | 2000-04-18 | Toshiba Mach Co Ltd | Plasticizing apparatus |
| CN203125925U (en) * | 2012-10-11 | 2013-08-14 | 宋明翰 | Screw rod specially used for exhaust type mixing single-screw rod extruder pelletizing unit |
| CN204622380U (en) * | 2015-04-11 | 2015-09-09 | 厦门川汉环保科技有限公司 | The dual-heating type prilling granulator of waste plastic film is reclaimed in a kind of application |
-
2015
- 2015-04-11 CN CN201510169498.9A patent/CN104816398A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0299241A2 (en) * | 1987-06-30 | 1989-01-18 | PIRELLI CAVI S.p.A. | Extruder for polymeric materials |
| JP2000108172A (en) * | 1998-10-06 | 2000-04-18 | Toshiba Mach Co Ltd | Plasticizing apparatus |
| CN203125925U (en) * | 2012-10-11 | 2013-08-14 | 宋明翰 | Screw rod specially used for exhaust type mixing single-screw rod extruder pelletizing unit |
| CN204622380U (en) * | 2015-04-11 | 2015-09-09 | 厦门川汉环保科技有限公司 | The dual-heating type prilling granulator of waste plastic film is reclaimed in a kind of application |
Non-Patent Citations (2)
| Title |
|---|
| 潘育英 等: "双螺杆反应器特性的初步探讨", 《化学工程》 * |
| 胡友良等: "《聚烯烃功能化及改性：科学与技术》", 31 March 2006, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106003461A (en) * | 2016-06-08 | 2016-10-12 | 厦门川汉环保科技有限公司 | Gas protection and modified granulation integrated device for waste plastic recycling |
| CN108481603A (en) * | 2018-04-26 | 2018-09-04 | 杨传平 | A kind of device for modified plastics production |
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |