CN104139471B - Thin film type waste plastic recycling, reusing, washing and purifying method - Google Patents

Thin film type waste plastic recycling, reusing, washing and purifying method Download PDF

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Publication number
CN104139471B
CN104139471B CN201410348983.8A CN201410348983A CN104139471B CN 104139471 B CN104139471 B CN 104139471B CN 201410348983 A CN201410348983 A CN 201410348983A CN 104139471 B CN104139471 B CN 104139471B
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washing
water
tablet
thin film
purifying
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CN104139471A (en
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曹堪洲
范刚华
徐涛
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JIANGSU JINWO MACHINERY CO Ltd
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JIANGSU JINWO MACHINERY CO Ltd
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Priority to CN201410348983.8A priority Critical patent/CN104139471B/en
Priority claimed from CN201610200474.XA external-priority patent/CN105729677B/en
Priority claimed from CN201610203059.XA external-priority patent/CN105728171B/en
Publication of CN104139471A publication Critical patent/CN104139471A/en
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    • 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

Abstract

The invention discloses a thin film type waste plastic recycling, reusing, washing and purifying system and method. The method comprises the steps that a shredding machine is adopted to shear waste materials with a mechanical shear, the waste materials are preliminarily washed, sedimentation is carried out, and heavy impurities are removed; then, the waste materials are washed through multiple stages of drums in a multi-drum washing separation device, the upgoing flowing speed of washing water injected from lower water inlets is controlled, light impurities mixed into the materials or different materials with different proportions are effectively removed or are extracted through washing, and a double-screw impregnator is utilized for shearing, kneading and evenly forming obtained plastic pieces into small pieces and particles to be dried and stored for standby. According to the thin film type waste plastic recycling, reusing, washing and purifying method and system, solid waste of a paper-making factory can be comprehensively utilized, waste paper fibers and waste plastic are respectively recycled and reused, automation and large-scale industrial production can be achieved, the rate of multipurpose utilization can reach more than 90%, water consumption can be reduced by 50% to 80% through washing water cyclic utilization, environmental pollution is reduced, production continuity is ensured, the production space is saved, and the thin film type waste plastic recycling, reusing, washing and purifying system and method are of remarkable significance.

Description

A kind of thin film class technics of reclaim of plastic waste recycling washing and purifying method
Technical field
The present invention relates to a kind of technics of reclaim of plastic waste washing, purifying system and washing and purifying method, be specifically related to a kind of thin film class technics of reclaim of plastic waste recycling washing, purifying system and washing and purifying method.
Background technology
The development of plastics industry, brings big advantages to the mankind, but stays infinite future trouble i.e. " white pollution ".Since there being plastic, being just inevitably generated old plastics, and elapsed over time, more new raw materials come into operation so that waste or used plastics is in significantly rising.It is difficult to degradation with aging due to waste or used plastics at normal temperatures, thus forms the white pollution that grows with each passing day, make ecological environment subject to severe risks of damage.
China's plastic yield, consumption all occupy the whole world first, per capita year consumer plastic about three kilograms (developed country's year per capita consumes eight kilograms), and white pollution degree occupies the whole world the 4th.Well sold and in short supply with the regeneration granule market that discarded plastic is Raw material processing, the benign cycle of the utilization of resources can be realized, of far-reaching significance.The thin film class waste or used plastics such as agricultural film, convenient bag, bag of cement, food pack, woven bag, are all the raw material sources of regeneration granule.In particular with waste paper as the paper mill of raw material, waste paper per ton can produce the solid gurry of 5 ~ 8%, wherein based on polypropylene, polyethylene film class waste or used plastics, accounting 80 ~ 90%, by the paper mill of 1,000,000 tons of lateral moulds of annual output, produce solid gurry 5 ~ 80,000 tons year, containing waste or used plastics 4 ~ 70,000 tons, recycling can produce huge economic benefit, reduces environmental pollution simultaneously.
Owing to thin film class waste or used plastics unit weight is low, volume is big, complicated component, particularly broken difficult with washing, purifying, substantial amounts of water resource need to be expended, existing reclaiming field mainly produces with casual household, small workshop mode, it is simply equipped, small scale, easily causes secondary environmental pollution.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of thin film class technics of reclaim of plastic waste recycling washing, purifying system, and then provides a kind of thin film class technics of reclaim of plastic waste recycling washing and purifying method.
Technical scheme: for solving above-mentioned technical problem, the thin film class technics of reclaim of plastic waste recycling washing, purifying system that the present invention provides, by material operation traffic direction, including the first conveying equipment, shredder, the second conveying equipment, tumbler-type washing machine, many rotary drums washing separation device, tablet pump, inclined helix dehydrator, buffer bin, the 3rd conveying worm, double-screw impregnator, drying machine, the 4th conveying equipment and storage bin;nullThe discharging opening of described first conveying equipment just charging aperture to shredder,The discharging opening of described shredder just charging aperture to the second conveying equipment,The discharging opening of described second conveying equipment just charging aperture to tumbler-type washing machine,The discharging opening of described tumbler-type washing machine connects with the charging aperture in many rotary drums washing separation device,It is provided with container below the discharging opening of described many rotary drums washing separation device,Described tablet pump is located between this container and inclined helix dehydrator,The input of tablet pump is arranged in the cavity volume of this container,Tablet delivery side of pump connects with the charging aperture of inclined helix dehydrator,The discharging opening of described inclined helix dehydrator connects with the charging aperture of buffer bin,The discharging opening of described buffer bin and the charging aperture connection of the 3rd conveying worm,The discharging opening of described 3rd conveying worm connects with the charging aperture of double-screw impregnator,The discharging opening of described double-screw impregnator connects with the charging aperture of drying machine,The discharging opening of described drying machine and the charging aperture connection of the 4th conveying equipment,The discharging opening of described 4th conveying equipment connects with the charging aperture of storage bin.
Preferably, described first conveying equipment and the second conveying equipment and the 4th conveying equipment are chain scraper conveyor or belt conveyor.
Preferably, tumbler-type washing machine therein includes body, rotary drum, rotary drum driving device;Described body one upper lateral part is provided with charging aperture, and its opposite side is provided with discharging opening, is provided with washing cavities in body, drives and rotate in washing cavities is located at by described rotary drum and by rotary drum driving device;Organism bottom shape below described rotary drum position is inversed taper platform shape;Described body is provided with upper water inlet adjacent to one end of charging aperture, and the lower section of the lower frustum mouth of the inversed taper platform shape of described organism bottom is provided with the body connected with lower frustum mouth, and tube wall is provided with lower water inlet;The lower section of described body is provided with sediment pipe, and the upper end of described sediment pipe is provided with blow valve, and lower end is provided with lower blow valve.The tumbler-type washing machine using this structure can form up current by the water inlet of lower water inlet, the material effectively reducing proportion lighter is precipitated downwards by the thrust of up current, the heavy seeds such as metal object, the stone etc. that only make proportion heavier sink to sediment pipe, can effectively remove the heavy seeds in material, and greatly reduce the loss that material easily causes during washing separates impurity.
Preferably, many rotary drums washing separation device therein includes that body, top, described body one end are provided with charging aperture, its other end is provided with discharging opening, it is provided with washing cavities in body, in described washing cavities, is provided with rotary drum, between charging aperture and discharging opening, set gradually two or more rotary drum;Described organism bottom shape is multiple inversed taper platform shape arranged side by side, the position of inversed taper platform shape and rotary drum position one_to_one corresponding, and is positioned at the lower section of corresponding rotary drum position;Described body is provided with upper water inlet adjacent to one end of charging aperture, and the lower section of the lower frustum mouth of described organism bottom each inversed taper platform shape is all correspondingly provided with the body connected with lower frustum mouth, and each tube wall is all correspondingly provided with lower water inlet;The lower section of each body is all correspondingly provided with jetsam pipe, and the upper end of each jetsam pipe is all correspondingly provided with loading and unloading material valve, and lower end is all correspondingly provided with lower discharge valve.Further preferred as this preferred version: each lower water inlet of described many rotary drums washing separation device is all correspondingly provided with current velocity controller, all being correspondingly provided with current meter, described loading and unloading material valve and corresponding lower discharge valve in described each body is the automatic valve that interval alternately opens and closes.This many rotary drums washing separation device can be injected simultaneously into washings by upper and lower water inlet, the method alternately opening and closing upper and lower discharge valve, the proportion utilizing different material in mixed material is different, control the up flow velocity of the washings that each lower water inlet injects, effectively wash and isolate the different material that there is difference of specific gravity.Further can be by configuring the up flow velocity of the washings that each the lower water inlet successively decreased successively injects, it is thus achieved that the laddering separation of mixed material and incrementally deposition effect.Simultaneously can pass through current velocity controller, current meter, more accurately control flow rate of water flow, by automatic valve automatic buildup discharging, the effective guarantee seriality of production.
Preferably, described inclined helix dehydrator includes spiral case, it is provided with in spiral case and is driven, by driving device for slow-run, the spiral rotated, the spiral of described spiral case and inside thereof is obliquely installed from low to high along material conveying direction, the two ends of described spiral case are respectively the oblique lower end of shell and the oblique upper end of shell, described shell is positioned at the top of the oblique lower end of shell and is provided with charging aperture, the bottom being positioned at the oblique lower end of shell is provided with discharge outlet, the bottom being positioned at the oblique upper end of shell is provided with discharging opening, and the lower parallel being positioned at spiral in described spiral case is provided with sieve plate.
Buffer bin therein can be selected for popular response storehouse, this area, as a further improvement on the present invention, perfectly even blanking type buffer bin.Described uniform blanking type buffer bin, including warehouse and uniform doffer, warehouse top is provided with charging aperture, is provided with blanking port bottom warehouse;Described uniform doffer, including housing, is provided with load displacing screw in housing, housing one side lower part is provided with the discharging opening of reaction warehouse, and the charging aperture of this uniform doffer is the blanking port bottom reaction warehouse warehouse;Described load displacing screw includes helical axis and the helical blade being arranged on helical axis, and described helical axis is positioned at the position above discharging opening and is fixed with uniform blanking ring, and described uniform blanking ring is consistent with the central axis of described helical axis;Described uniform blanking ring includes body and multi start thread blade, described multi start thread blade is fixedly connected on the outer wall of body, described body retainer ring is around being socketed on helical axis, and the rotation direction of described multi start thread blade is consistent with the helical blade rotation direction on described load displacing screw.As a further improvement on the present invention, the warehouse of this uniform blanking type reaction warehouse is trapezoidal side storehouse;Described uniform doffer includes that the load displacing screw of more than two, every load displacing screw all include that helical axis and helical blade, described helical blade are the variable-pitch auger blade gradually changed from small to big along conveying direction pitch;The helical axis of every load displacing screw is positioned at the position above discharging opening and is all fixed with uniform blanking ring, the corresponding helical axis central axis of each uniform blanking ring is consistent, and the helical blade rotation direction on load displacing screw that multi start thread blade on each uniform blanking ring is corresponding is consistent;The load displacing screw of described more than two independently drives, and the helical axis of adjacent load displacing screw reversely rotates.This uniform blanking type reaction warehouse can realize uniform blanking by uniform blanking ring, be conducive to downstream pulping equipment steady production, fluctuation of load amplitude by original more than one times be reduced to 10 ~ 15% within, reduce equipment failure rate, improve equipment dependability, stabilize stock quality.On this basis, can be reversely rotated by the load displacing screw of more than two further, make material in two reverse rotations on load displacing screw are especially anti-under the common promotion of the helical blade rotated, the passage forward more equalized, then the stirring through uniform blanking ring is broken up, and continuous uniform must fall to upstream device from discharging opening.On load displacing screw, the varying pitch of helical blade can be designed so that material is gradually transitions loose condition (of surface) along helical axis conveying direction by full state in course of conveying, improves efficiency, reduces spiral operating load and abrasion.
Preferably, double-screw impregnator in native system, as the Application No. 201210332112.8 submitted to for 11st JIUYUE in 2012, entitled " a kind of double-screw impregnator " of Publication No. CN 102864669 A Chinese patent application described in, entire contents is incorporated herein by reference.Can also be as described in the Chinese patent application of entitled " a kind of double-screw impregnator " that grant number is ZL 201220458032.2 that JIUYUE in 2012 are submitted on the 11st, entire contents is incorporated herein by reference.Above-mentioned double-screw impregnator includes frame and the motor being arranged in frame, speed-changing gear box, movable crown gear coupling, machine barrel and two screw rods, described motor is connected by speed-changing gear box and movable crown gear coupling and two screw drive, described two screw rods are parallel to each other and are rotatably arranged in described machine barrel, described machine barrel one end is provided with charging aperture, and the other end is provided with discharging opening;Described screw rod is arranged with the first conveyor screw set, the first extrusion spiral set, the second conveyor screw set, the second extrusion spiral set, the 3rd conveyor screw set and the 3rd extrusion spiral set successively along conveying direction, the hand of spiral of described first, second, third conveyor screw set is contrary with the hand of spiral of described first, second, third extrusion spiral set, and the pitch of described first conveyor screw set is gradually reduced along conveying direction;Described machine barrel bottom is provided with waste liquid hole;Slot is had on the spiral shell rib of described first, second, third extrusion spiral set;Described machine barrel is upper and lower dissection type machine barrel, including the symmetrical upper half machine barrel being fixedly installed in frame connected and the able to turn on or off lower half machine barrel being connected in frame.Preferably, described machine barrel top is provided with and adds hand-hole with the 3rd conveyor screw liquid corresponding to set.
Drying machine therein can be selected for this area conventional dryers, preferably mesh-belt drier.Described mesh-belt drier includes cabinet and multi-level dryer mesh belt device;The top of described cabinet is provided with charging aperture, and bottom is provided with discharging opening;Described multi-level dryer mesh belt device includes the conveyer belt of multilamellar horizontally set, and described in the vertical direction, multilamellar conveyer belt head and the tail section is crisscross arranged, and along material conveying direction, the head end of next layer of conveyer belt stretches out the tail end of last layer conveyer belt;Described charging aperture is positioned at above the head end of top conveyer belt, and described discharging opening is positioned at below the tail end of lowermost layer conveyer belt;Described cabinet is provided around some air-heaters and some wet-emitting blowers, described air-heater is connected with air inlet, the air outlet arranged on multi-level dryer mesh belt device by air channel and guide duct, and described wet-emitting blower is connected with the moisture exhausting port arranged on multi-level dryer mesh belt device by dehumidifying pipelines.
For solving above-mentioned technical problem, a kind of thin film class technics of reclaim of plastic waste recycling washing and purifying method that the present invention provides, the thin film class technics of reclaim of plastic waste recycling washing, purifying system that its use is above-mentioned, the method includes:
1. material papering section:
Material is delivered to after shredder is broken into tablet by the first conveying equipment;Then by the second conveying equipment be delivered to tumbler-type washing machine add washings adjust concentration be 3 ~ 5% carry out washing, sediment, remove the heavy seeds being mingled in material;
2. centrifugal station is washed:
Water-containing materials after the washing export material papering section is delivered to many rotary drums washing separation device, utilize the aqueous scraps of paper, plastics tablet and the difference of specific gravity of water mixed in thin film class waste or used plastics, the aqueous scraps of paper and plastics tablet are isolated in washing, the aqueous scraps of paper go out from each jetsam bank of tubes, plastics tablet is pulled over and is moved forward to discharging opening, then being pumped to inclined helix dehydrator by tablet pump remove residual impurity further and be dehydrated, residual impurity and water are discharged by the screen cloth mesh of inclined helix dehydrator;
3. machinery rubs neat and well spaced section:
Plastics tablet after washing the dehydration that centrifugal station exports again is delivered to buffer bin;The material of the load displacing screw metering output of buffered feed bin is delivered to double-screw impregnator by the 3rd conveying worm, is sheared and rubs into small pieces and pellet shape granule, the simultaneously free water in extruded material in double-screw impregnator;
4. dry storage section:
The plastics tablet that machinery is rubbed neat and well spaced section of output is delivered to drying machine hot air drying, is then delivered to storage bin storage by the 4th conveying equipment.
Preferably, described 2. washing centrifugal station is: the rear film class waste or used plastics of washing mixing the aqueous scraps of paper, plastics tablet and water that 1. material papering section exports is delivered to many rotary drums washing separation device, while the upper water inlet of many rotary drums washing separation device injects washings, from each, water inlet injects washings, up flow velocity of the washings that water inlet injects from each, it is set to the difference less than the gravity of the scraps of paper in washings with buoyancy of the impulse force so that current up in each body, the simultaneously greater than gravity of plastics tablet and the difference of buoyancy in washings;Wash by homodromal multiple rotary drums, separate, break up material, alternately open and close each loading and unloading material valve and each lower discharge valve is discharged and is deposited on the aqueous scraps of paper in each jetsam pipe;By homodromal multiple rotary drums plastics tablet pulled over and move forward to discharging opening, be then sent to inclined helix dehydrator and remove residual impurity further and complete dehydration, residual impurity and water and discharged by the screen cloth mesh of inclined helix dehydrator.Preferably, in described 2. washing centrifugal station, from each of many rotary drums washing separation device, water inlet injects up flow velocity is the washings of 0.01m/s ~ 0.3m/s.Above-mentioned preferred method can remove the light impurity being mingled in material further, current as the most up in each body of many rotary drums washing separation device in the proportion aqueous scraps of paper more than 1 gradually sink, the plastics tablet that proportion is lighter swims in rotate with rotary drum in washings and pulls over to outbound course, and under the effect of up current, plastics tablet seldom enters in body from each lower frustum mouth, also can be by the washing cavities of the most up current refunds body even if falling into;Final plastics tablet is pulled over by rotary drum and is moved forward to discharging opening, and the sedimentation accumulation of the aqueous scraps of paper is in each jetsam pipe, alternately opens and closes discharge by loading and unloading material valve and lower discharge valve.
After entering washing cavities in order to avoid mixed material, the most fully absorbed water profit, the most sufficiently washed and broken up, just a large amount of fall into jetsam pipe by coming lower frustum mouth above and body deposition, the deposition so obtained separate material is more or meromict state, cleannes do not reach requirement yet.Thus as the further improvement of present method invention, in described 2. washing centrifugal station, along the mixed material horizontal feed direction of many rotary drums washing separation device, from each, the up flow velocity of the washings that water inlet injects successively decreases successively.Because the up flow velocity of first lower water inlet is relatively large, so the impulse force of up current is bigger, enter washing cavities in the mixed material that the first rotary drum washing is broken up, small part is opened through water suction profit, break up, is separated the most sufficient aqueous scraps of paper, in could passing through first body, the most up current gradually sink, and the material of meromict state cannot sink;The mixed material mixing the most fully moistening the aqueous scraps of paper opened containing the plastics tablet Buddhist monk that proportion is lighter swims in washings, pulled over to the washing control zone of follow-up rotary drum and continue washing, break up, water suction profit further is disperseed the most abundant, the material of meromict state gradually decreases, the up flow velocity of the washings that each lower water inlet injects successively decreases successively, the profit progressively increased can be made to open, break up, separate the most sufficient aqueous scraps of paper, gradually sunk by each follow-up body successively, thus obtain more preferable laddering separating effect and incrementally deposition effect.
Preferably, the hot blast of the drying machine of described 4. dry storage section uses jet chimney indirectly to heat, and steam pressure is 0.4 ~ 0.6MPa.Another kind is preferably, and the hot blast of the drying machine of described 4. dry storage section uses electrical heating.
Preferably, the sediment impurity obtained after tumbler-type washing machine washing in described 1. material papering section enters fixed-end forces system, described wash the aqueous scraps of paper in centrifugal station the most again and be discharged into waste paper repulping recovery system through the jetsam pipe of many rotary drums washing separation device, the residual impurity discharged by the sieve plate mesh of inclined helix dehydrator and water enter water treatment system, purify Posterior circle through precipitation and are back to washing process;Described 3. machinery is rubbed the free water discharged by draining filter screen in neat and well spaced section and is entered water treatment system, purifies Posterior circle through precipitation and is back to washing process.
Beneficial effect: the thin film class technics of reclaim of plastic waste that the present invention provides recycles in washing, purifying system and washing and purifying method, after using shredder to shear waste materials by mechanical shear, primary wash sediment removes heavy seeds, then washed by multistage rotary drum in many rotary drums washing separation device, and control the up flow velocity of the washings that each lower water inlet injects, effectively remove the light impurity being mingled in material or the different material that there is difference of specific gravity is isolated in washing, and then utilize double-screw impregnator that the plastics tablet obtained shearing is rubbed neat and well spaced one-tenth small pieces and pellet shape granule, dry storage is standby.This method and system can realize paper mill solid gurry comprehensive utilization, waste paper fibre and waste or used plastics and be separately recovered recycling; and automatization, large-scale industrial production can be realized; radical cure small workshop mode dispersion processing secondary environmental pollution problem; comprehensive utilization ratio is up to more than 90%; and washings consumption 50 ~ 80% can be reduced, while reducing environmental pollution, it is ensured that the seriality of production by recycling of washings; save production space, there is significant meaning.
Further, the washing, purifying system that the present invention provides, tumbler-type washing machine can be used to form up current by the water inlet of lower water inlet, the material effectively reducing proportion lighter precipitates downwards, the heavy seeds such as metal object, the stone etc. that only make proportion heavier sink to sediment pipe, can effectively remove the heavy seeds in material, and greatly reduce the loss that material easily causes during washing separates impurity.
Further, the washing, purifying system that the present invention provides, uniform blanking type buffer bin can be used to realize uniform blanking by uniform blanking ring, be conducive to downstream pulping equipment steady production, fluctuation of load amplitude by original more than one times be reduced to 10 ~ 15% within, reduce equipment failure rate, improve equipment dependability, stabilize stock quality;
Further, the washing, purifying system that the present invention provides, mesh-belt drier hot air drying plastics tablet can be used, save and produce space, improve efficiency.
Further, the washing, purifying system and method that the present invention provides, can be in the many rotary drums washing separation device used, by configuring the up flow velocity of the washings that each the lower water inlet successively decreased successively injects, it is thus achieved that the laddering separation of mixed material and incrementally deposition effect.Flow rate of water flow is more accurately controlled also by current velocity controller, current meter, by automatic valve automatic buildup discharging, the seriality that produces of effective guarantee.
Accompanying drawing explanation
Fig. 1 is the structural representation of thin film class technics of reclaim of plastic waste recycling washing, purifying system;
Fig. 2 is the structural representation of tumbler-type washing machine;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the structural representation of many rotary drums washing separation device;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the structural representation of rotary drum in many rotary drums washing separation device;
Fig. 7 is the structural representation of inclined helix dehydrator;
Fig. 8 is the structural representation of uniform blanking type buffer bin;
Fig. 9 is the structural representation of uniform blanking ring in uniform blanking type buffer bin;
Figure 10 is the structural representation of uniform doffer two load displacing screws of configuration in uniform blanking type buffer bin;
Figure 11 is the structural representation of mesh-belt drier;
Figure 12 is the top view of Figure 11.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is further described by the embodiment of system and the embodiment of method.
As shown in Figure 1, this thin film class technics of reclaim of plastic waste recycling washing, purifying system, by material operation traffic direction, including the first conveying equipment 1, shredder the 2, second conveying equipment 3, tumbler-type washing machine 4, many rotary drums washing separation device 5, tablet pump 6, inclined helix dehydrator 7, buffer bin the 8, the 3rd conveying worm 9, double-screw impregnator 10, drying machine the 11, the 4th conveying equipment 12 and storage bin 13;nullThe discharging opening of described first conveying equipment 1 just charging aperture to shredder 2,The discharging opening of described shredder 2 just charging aperture to the second conveying equipment 3,The discharging opening of described second conveying equipment 3 just charging aperture to tumbler-type washing machine 4,The discharging opening of described tumbler-type washing machine 4 connects with the charging aperture in many rotary drums washing separation device 5,It is provided with container below the discharging opening of described many rotary drums washing separation device 5,Described tablet pump 6 is located between this container and inclined helix dehydrator 7,The input of tablet pump 6 is arranged in the cavity volume of this container,The outfan of tablet pump 6 connects with the charging aperture of inclined helix dehydrator 7,The discharging opening of described inclined helix dehydrator 7 connects with the charging aperture of buffer bin 8,The discharging opening of described buffer bin 8 and the charging aperture connection of the 3rd conveying worm 9,The described discharging opening of the 3rd conveying worm 9 connects with the charging aperture of double-screw impregnator 10,The discharging opening of described double-screw impregnator 10 connects with the charging aperture of drying machine 11,The discharging opening of described drying machine 11 and the charging aperture connection of the 4th conveying equipment 12,The described discharging opening of the 4th conveying equipment 12 connects with the charging aperture of storage bin 13.
Wherein, the first conveying equipment 1 and the second conveying equipment 3 and the 4th conveying equipment 12 are chain scraper conveyor or belt conveyor.The crushing mechanism structure of shredder 2 therein is made up of the rotor of the stationary knife being fixed in casing and two relative counter-rotatings, after material enters shredder, rely on the shearing of composition between some cutterheads and cutterhead and the stationary knife between two rotors secondary, material cutting is broken into the tablet of certain size, rotor is spline or the axle of hexagon section by centre and the cutterhead on axle in tandem is constituted, and can adjust the size of material after shearing by adjusting cutterhead thickness;Shredder can configure hilted broadsword roll structure as required, it would however also be possible to employ double knife roller or many knife roller structures.
Tumbler-type washing machine 4 therein can be selected for this area conventional rotary drum formula washing machine, provides a kind of specific implementation herein, and as shown in Figures 2 and 3, this tumbler-type washing machine includes body, rotary drum 402, rotary drum driving device 404;Described body one upper lateral part is provided with charging aperture 401, and its opposite side is provided with discharging opening 403, is provided with washing cavities in body, drives and rotate in washing cavities is located at by described rotary drum 402 and by rotary drum driving device 404;Organism bottom shape below described rotary drum 402 position is inversed taper platform shape;Described body is provided with upper water inlet 406 adjacent to one end of charging aperture 401, and the lower section of the lower frustum mouth of the inversed taper platform shape of described organism bottom is provided with the body connected with lower frustum mouth, and tube wall is provided with lower water inlet 407;The lower section of described body is provided with sediment pipe 405, and the upper end of described sediment pipe 405 is provided with blow valve 408, and lower end is provided with lower blow valve 409.During work, the charging aperture 401 of the material entrance tumbler-type washing machine of tablet is cracked into through shredder, washings are added by upper water inlet 406 and lower water inlet 407, rotary drum 402 is driven by rotary drum driving device 404 and the most slowly rotates, after tablet enters scrubbing section, to wash rear tablet continuously by the rotation of rotary drum 402 to be transferred to by discharging opening 403, heavy seeds such as metal object, stone etc. sink to sediment pipe 405;It is upper during normal work that blow valve 408 is opened, lower blow valve 409 cuts out, it is beneficial to slag charge and is precipitated into sediment pipe 405, when needs deslagging, upper blow valve 408 cuts out, lower blow valve 409 is opened, discharging sediment, then go up blow valve 408 and be again turned on, lower blow valve 409 is again switched off, upper and lower blow valve alternately cuts out and opens and realizes sediment, and sediment enters fixed-end forces system after discharging.In the structure shown here, because the water inlet of lower water inlet 407 can form up current, the material that the thrust of up current can effectively reduce proportion lighter precipitates downwards, but heavier heavy seeds such as metal object, the stone etc. of proportion still can sink to sediment pipe, can effectively remove the heavy seeds in material, and greatly reduce the loss that material easily causes during washing separates impurity.
As shown in Figure 4, many rotary drums washing separation device 5 therein includes body 520, top, described body 520 one end is provided with charging aperture 510, its other end is provided with discharging opening 530, it is provided with washing cavities in body 520, it is provided with rotary drum in described washing cavities, between charging aperture and discharging opening, sets gradually three rotary drums, the respectively first rotary drum the 541, second rotary drum 542 and the 3rd rotary drum 543;Described body 520 bottom shape is three inversed taper platform shapes arranged side by side, the position of inversed taper platform shape and rotary drum position one_to_one corresponding, and is positioned at the lower section of corresponding rotary drum position;Described inversed taper platform shape is the taper type that big end opening suitable for reading is little.Described body 520 is provided with upper water inlet 550 adjacent to one end of charging aperture 510, bottom described body 520, the lower section of the lower frustum mouth of each inversed taper platform shape is all correspondingly provided with the body connected with lower frustum mouth, the respectively first body the 561, second body 562 and the 3rd body 563;First body 561 sidewall is provided with first time water inlet 571, and the lower section of the first body 561 is provided with the first jetsam pipe 581, and the upper end of the first jetsam pipe 581 is correspondingly provided with the first loading and unloading material valve 591, and lower end is correspondingly provided with first time discharge valve 599;Second body 562 sidewall is provided with second time water inlet 572, and the lower section of the second body 562 is provided with the second jetsam pipe 582, and the upper end of the second jetsam pipe 582 is correspondingly provided with the second loading and unloading material valve 592, and lower end is correspondingly provided with second time discharge valve 598;3rd body 563 sidewall is provided with the 3rd time water inlet 573, and the lower section of the 3rd body 563 is provided with the 3rd jetsam pipe 583, and the upper end of the 3rd jetsam pipe 583 is correspondingly provided with the 3rd loading and unloading material valve 593, and lower end is correspondingly provided with the 3rd time discharge valve 597.It is of course also possible to be configured to 4 rotary drums, 5 rotary drums or the rotary drum of other quantity as required, corresponding body, lower water inlet, jetsam pipe, loading and unloading material valve, lower discharge valve are also identical quantity and position relationship.
Described each lower water inlet is all correspondingly provided with current velocity controller, and being all correspondingly provided with current meter, described loading and unloading material valve and corresponding lower discharge valve in described each body is the automatic valve that interval alternately opens and closes.Described lower discharge valve alternately keying may be configured as, first open each loading and unloading material valve and close each lower discharge valve a period of time, to deposit first kind material in jetsam pipe, it is then shut off each loading and unloading material valve and opens each lower discharge valve, to discharge first kind material from jetsam pipe, open each loading and unloading material valve the most again and close deposition material of each lower discharge valve a period of time, then turn off each loading and unloading material valve and open each lower discharge valve discharge material, ..., so interval is alternately repeated.Described body 520 is bolted together with spiral-lock by discerptible upper shell with lower house, each rotary drum is installed in the washing cavities within upper shell and lower house, being supported by bearings, toothed gearing electric motor is connected with the power shaft of each rotary drum and drives it to rotate respectively.Described each rotary drum is driven rotating Vortex by toothed gearing electric motor, and described toothed gearing electric motor uses frequency control motor, as it is shown in figure 5, the first rotary drum 541 is supported by bearings 547 and bearings 548, and is driven rotation by toothed gearing electric motor 549.
As shown in Figure 6, the most each rotary drum includes runner 306 and the 5 groups of vane group arranged along runner axial direction order, it is respectively first vane group the 301, second vane group 302, third blade group 303, quaterfoil group 304 and the 5th vane group 305, often group vane group comprises along the uniform some blades of runner circumferencial direction, and toothed gearing electric motor drives the runner 306 being fixedly connected on power shaft to rotate by power shaft 307.These 5 groups of vane group are consistent along the material toggling direction of runner tangential direction;It is positioned at runner shaft the first vane group 301 laterally relative along the material toggling direction of runner axial direction with the 5th vane group 305;The second vane group 302 being positioned at runner axially inner side is relative along the material toggling direction of runner axial direction with the first vane group 301 being adjacent;The third blade group 303 being positioned at runner axially inner side is identical along the material toggling direction of runner axial direction with the second vane group 302 being adjacent;The quaterfoil group 304 and the third blade group 303 being adjacent that are positioned at runner axially inner side are in opposite direction along the material toggling of runner axial direction;The 5th vane group 305 being positioned at runner axially inner side is relative along the material toggling direction of runner axial direction with the quaterfoil group 304 being adjacent.Can certainly as required flexible configuration each vane group blade setting direction with obtain needed for material toggling direction.So first aspect adds the washing of rotary drum and breaks up effective coverage; second aspect is gathered mixed material and is broken up effective coverage to washing; the third aspect can make the washing more abundant, equilibrium of current turbulization break up mixed material; fourth aspect rotates cancelling out each other of the centrifugal force of generation on runner by each vane group; play the effect of axial force self-balancing; improve the Energy Efficiency Ratio of device operating, stability, extend the life-span of device.
Inclined helix dehydrator 7 therein can be selected for this area routine inclined helix dehydrator, provide one herein and implement form, as shown in Figure 7, this inclined helix dehydrator includes spiral case 602, it is provided with in spiral case 602 and is driven, by driving device for slow-run 604, the spiral 603 rotated, the spiral 603 of described spiral case 602 and inside thereof is obliquely installed from low to high along material conveying direction, the two ends of described spiral case 602 are respectively the oblique lower end of shell and the oblique upper end of shell, described shell is positioned at the top of the oblique lower end of shell and is provided with charging aperture 601, the bottom being positioned at the oblique lower end of shell is provided with discharge outlet 607, the bottom being positioned at the oblique upper end of shell is provided with discharging opening 605, the lower parallel being positioned at spiral 603 in described spiral case 602 is provided with sieve plate 606.During work, material and water after tumbler-type washing machine washs are pumped to the charging aperture 601 of inclined helix dehydrator by tablet pump, and spiral 603 is driven rotation by driving means 604, and material is delivered to discharging opening 605 by spiral 603 lifting and discharges.Washings and residual impurity are discharged by the mesh of sieve plate 606 and enter water treatment system through discharge outlet 607, purify Posterior circle through precipitation and are back to washing process.
Buffer bin 8 therein can be selected for this area routine feed bin, perfectly even blanking type buffer bin.As shown in Figure 8,
The uniform blanking type buffer bin selected in present embodiment includes that warehouse 1010 and uniform doffer, warehouse 1010 are trapezoidal side storehouse, and warehouse top is provided with the charging aperture 1020 of reaction warehouse, is provided with blanking port bottom warehouse 1010;This uniform doffer includes housing, is provided with load displacing screw in housing, and described load displacing screw includes helical axis 1040 and the helical blade 1050 being arranged on helical axis;The helical axis 1040 of this load displacing screw is connected with the motor-driven being located at housing side, and housing opposite side bottom is provided with the discharging opening 1030 of reaction warehouse, the blanking port bottom the charging aperture i.e. warehouse 1010 of this uniform doffer;Described helical axis 1040 is positioned at the position above discharging opening 1030 and is fixed with uniform blanking ring 1060;Uniformly the structural representation of blanking ring 1060 is as it is shown in figure 9, include body 1061, and the outer wall of body 1061 is fixedly connected with multi start thread blade 1062;The body 1061 of described uniform blanking ring is fastenedly connected on described helical axis 1040 by welding or bolt, and uniform blanking ring 1060 is consistent with the central axis of helical axis 1040;The rotation direction of described multi start thread blade 1062 is consistent with helical blade 1050 rotation direction on described load displacing screw.The uniform doffer of this reaction warehouse can also include two such independent load displacing screws driven certainly, as shown in Figure 10, every load displacing screw all includes that helical axis and helical blade, described helical blade are the variable-pitch auger blade gradually changed from small to big along conveying direction pitch;The helical axis of every load displacing screw is positioned at the position above discharging opening and is all fixed with uniform blanking ring, the corresponding helical axis central axis of each uniform blanking ring is consistent, and the helical blade rotation direction on load displacing screw that multi start thread blade on each uniform blanking ring is corresponding is consistent;The helical axis of these two load displacing screws reversely rotates.In this configuration, in the material two reverse rotations on neighbouring load displacing screw are especially anti-under the common promotion of the helical blade rotated, the passage forward more equalized, then the stirring through uniform blanking ring is broken up, and continuous uniform must fall to upstream device from discharging opening;On load displacing screw, the varying pitch of helical blade can be designed so that material is gradually transitions loose condition (of surface) along helical axis conveying direction by full state in course of conveying, improves efficiency, reduces spiral operating load and abrasion.During work, slurry is continuously introduced in reaction warehouse warehouse 1010 by the reaction warehouse feeding mouth 1020 at top, conveying equipment autoreaction storehouse, upstream, after meeting the requirement of the technological design time of staying, in warehouse, material fullness rate is 70 ~ 80%, now load displacing screw fill material is full compaction state, in full block bulk in slurry helicla flute between load displacing screw helical blade 1050;When being positioned at the load displacing screw bottom reaction warehouse and starting and rotate, in helicla flute, the material in full block bulk is transferred to load displacing screw one end close to discharging opening 1030 continuously;Slurry first passes through uniform blanking ring 1060 close to load displacing screw tail end before whereabouts, and after the multi start thread blade 1062 on uniform blanking ring 1060 stirs and breaks up, continuous uniform falls to upstream device.
Double-screw impregnator therein, as the Application No. 201210332112.8 submitted to for 11st JIUYUE in 2012, entitled " a kind of double-screw impregnator " of Publication No. CN 102864669 A Chinese patent application described in, it is incorporated herein by reference that entire contents comprises accompanying drawing.Can also be as described in the Chinese patent application of entitled " a kind of double-screw impregnator " that grant number is ZL 201220458032.2 that JIUYUE in 2012 are submitted on the 11st, it is incorporated herein by reference that entire contents comprises accompanying drawing.This double-screw impregnator includes frame and the motor being arranged in frame, speed-changing gear box, movable crown gear coupling, machine barrel and two screw rods, described motor is connected by speed-changing gear box and movable crown gear coupling and two screw drive, described two screw rods are parallel to each other and are rotatably arranged in described machine barrel, described machine barrel one end is provided with charging aperture, and the other end is provided with discharging opening;Described screw rod is arranged with the first conveyor screw set, the first extrusion spiral set, the second conveyor screw set, the second extrusion spiral set, the 3rd conveyor screw set and the 3rd extrusion spiral set successively along conveying direction, the hand of spiral of described first, second, third conveyor screw set is contrary with the hand of spiral of described first, second, third extrusion spiral set, and the pitch of described first conveyor screw set is gradually reduced along conveying direction;It is designed with homogenizing ring between each conveyor screw set and extrusion spiral set;Described machine barrel bottom is provided with the waste liquid hole corresponding with the outfan of first, second conveyor screw set, is provided with filtration castor, i.e. draining filter screen at waste liquid hole;Slot is had on the spiral shell rib of described first, second, third extrusion spiral set;Described machine barrel can be upper and lower dissection type machine barrel, including the symmetrical upper half machine barrel being fixedly installed in frame connected and the able to turn on or off lower half machine barrel being connected in frame.Further, described upper half machine barrel top is provided with and adds hand-hole with the 3rd conveyor screw liquid corresponding to set.During work, material is advanced to discharging opening direction by two engagements homodromal screw rod, course of conveying is gradually reduced due to the pitch of the first conveyor screw set, material is gradually compressed and is full of screw channel, it is at the first homogenizing ring before entering reverse crush zone extrusion spiral set, extruding force reaches maximum, material is extruded strongly, under the effect of forward extrusion power, material is forced through the slot on the first extrusion spiral set spiral shell rib, and material is squeezed in this process, shear, crumple and neat and well spaced physical dimension is diminished;Same, again after the second conveyor screw set and the second extrusion spiral set, the 3rd conveyor screw set and the extruding of the 3rd extrusion spiral set, shearing, crumple homogenizing, material is sheared to be rubbed into small pieces and pellet shape granule and discharges, simultaneously the free water in extruded material being discharged by filter castor.
Drying machine therein can be selected for this area conventional dryers, preferably mesh-belt drier.As is illustrated by figs. 11 and 12, the mesh-belt drier selected in present embodiment, including cabinet and multi-level dryer mesh belt device 603;The top of described cabinet is provided with charging aperture, and bottom is provided with discharging opening;Described multi-level dryer mesh belt device 603 includes the conveyer belt of multilamellar horizontally set, and described in the vertical direction, multilamellar conveyer belt head and the tail section is crisscross arranged, and along material conveying direction, the head end of next layer of conveyer belt stretches out the tail end of last layer conveyer belt;Described charging aperture is positioned at above the head end of top conveyer belt, and described discharging opening is positioned at below the tail end of lowermost layer conveyer belt;Described cabinet is provided around some air-heaters 601 and some wet-emitting blowers 602, described air-heater 601 is connected with air inlet, the air outlet arranged on multi-level dryer mesh belt device 603 by air channel and guide duct, and described wet-emitting blower 602 is connected with the moisture exhausting port arranged on multi-level dryer mesh belt device 603 by dehumidifying pipelines.
Using the thin film class technics of reclaim of plastic waste recycling washing and purifying method of above-mentioned thin film class technics of reclaim of plastic waste recycling washing, purifying system, its detailed description of the invention is:
Embodiment 1 :Farm-oriented mulch waste plastic regeneration reclaims
Material based on farm-oriented mulch waste or used plastics is delivered to shredder 2 by the first conveying equipment 1, is fractured into the tablet of the length of side 20 ~ 50mm;Then by the second conveying equipment 3 will broken after tablet be delivered to tumbler-type washing machine 4 and carry out washing and remove through sediment pipe the objectionable impurities such as the metal object, stone and the grains of sand that are mingled in tablet, sediment enters fixed-end forces system, wash concentration 3%;After washing, tablet flows into many rotary drums washing separation device 5 together with water, while the upper water inlet of many rotary drums washing separation device injects washings, from each, water inlet injects up flow velocity is the washings of 0.3m/s, again washs and isolates the light impurity contained in material, such as the scraps of paper etc..Then plastics tablet is pumped to inclined helix dehydrator 7 through tablet pump 6 together with water and is dehydrated, the fine impurities such as silt are discharged by the screen cloth mesh that inclined screw is peripheral together with water, deliver to water treatment system, water after precipitation purifies is recycled to be used in washing process, plastics tablet after dehydration is elevated is delivered to buffer bin 7, and in buffer bin, tablet moisture content is less than 25%;The load displacing screw washing the rear buffered feed bin of plastics tablet 8 is released outside storehouse and is delivered to double-screw impregnator 10 by the 3rd conveying worm 9, in double-screw impregnator 10, material is concentrated by two engagements homodromal screw extruding, pass sequentially through three sections of extrusion shearings and crumple neat and well spaced section, it is sheared and rubs neat and well spaced one-tenth small pieces and pellet shape granule, simultaneously, the free water contained in tablet is concentrated extrusion by force, being discharged into water treatment system by draining filter screen, the water after precipitation purifies is recycled to be used in washing process.Material can produce substantial amounts of frictional heat when being extruded shearing and rub, and temperature of charge is up to 80 ~ 90 DEG C, and tablet moisture content is down to less than 15%;Plastics material slabbing after and granule neat and well spaced by double-screw impregnator 10 enters drying machine 11 hot air drying of net belt type, and dry air uses electrical heating;Dried tablet delivers to storage bin 13 through the 4th conveying equipment 12, sells as commodity packing or enters upstream device mixing granulator.The present embodiment resource reclaim comprehensive utilization ratio is about 90%, and consumes about 50 ~ 80% by the reduction washings that recycle of washings.
In said process, the most aqueous scraps of paper of light impurity again washing isolated through too much rotary drum washing separation device may be output to the recycling of waste paper repulping recovery system.
Embodiment 2:Woven bag class waste plastic regeneration reclaims
Material based on woven bag class waste or used plastics is delivered to shredder 2 by the first conveying equipment 1, is fractured into the tablet of the length of side 20 ~ 50mm;Then by the second conveying equipment 3 will broken after tablet be delivered to tumbler-type washing machine 4 and carry out washing and remove through sediment pipe the objectionable impurities such as the metal object, stone and the grains of sand that are mingled in tablet, sediment enters fixed-end forces system, wash concentration 4%;After washing, tablet flows into many rotary drums washing separation device 5 together with water, while the upper water inlet of many rotary drums washing separation device injects washings, from each, water inlet injects up flow velocity is the washings of 0.2m/s, again washs and isolates the light impurity contained in material, such as the scraps of paper etc..Then plastics tablet is pumped to inclined helix dehydrator 7 through tablet pump 6 together with water and is dehydrated, the fine impurities such as silt are discharged by the screen cloth mesh that inclined screw is peripheral together with water, deliver to water treatment system, water after precipitation purifies is recycled to be used in washing process, plastics tablet after dehydration is elevated is delivered to buffer bin 7, and in buffer bin, tablet moisture content is less than 20%;The load displacing screw washing the rear buffered feed bin of plastics tablet 8 is released outside storehouse and is delivered to double-screw impregnator 10 by the 3rd conveying worm 9, in double-screw impregnator 10, material is concentrated by two engagements homodromal screw extruding, pass sequentially through three sections of extrusion shearings and crumple neat and well spaced section, it is sheared and rubs neat and well spaced one-tenth small pieces and pellet shape granule, simultaneously, the free water contained in tablet is concentrated extrusion by force, being discharged into water treatment system by draining filter screen, the water after precipitation purifies is recycled to be used in washing process.Material can produce substantial amounts of frictional heat when being extruded shearing and rub, and temperature of charge is up to 80 ~ 90 DEG C, and tablet moisture content is down to less than 10%;Plastics material slabbing after and granule neat and well spaced by double-screw impregnator 10 enters drying machine 11 hot air drying of net belt type, and dry air uses jet chimney indirectly to heat, and steam pressure is 0.4 ~ 0.6MPa;Dried tablet delivers to storage bin 13 through the 4th conveying equipment 12, sells as commodity packing or enters upstream device mixing granulator.The present embodiment resource reclaim comprehensive utilization ratio is about 93%, and consumes about 50 ~ 80% by the reduction washings that recycle of washings.
In said process, the most aqueous scraps of paper of light impurity again washing isolated through too much rotary drum washing separation device may be output to the recycling of waste paper repulping recovery system.
Embodiment 3:The solid gurry regeneration comprehensive in paper mill utilizes
The solid gurry material in paper mill based on thin film class waste or used plastics such as waste paper, polypropylene, polyethylene is delivered to shredder 2 by the first conveying equipment 1, is fractured into the tablet of the length of side 20 ~ 50mm;Then by the second conveying equipment 3 will broken after tablet be delivered to tumbler-type washing machine 4 and carry out washing and remove through sediment pipe the objectionable impurities such as the metal object, stone and the grains of sand that are mingled in tablet, sediment enters fixed-end forces system, wash concentration 5%;After washing, tablet flows into many rotary drums washing separation device 5 together with water, from the upper water inlet of many rotary drums washing separation device and each, water inlet is injected simultaneously into washings, mixed material horizontal feed direction along many rotary drums washing separation device, from each, the up flow velocity of the washings that water inlet injects successively decreases successively, it is the washings of 0.3m/s that first time water inlet injects up flow velocity, it is the washings of 0.2m/s that second time water inlet injects up flow velocity, 3rd time water inlet injects the washings that up flow velocity is 0.15 m/s, utilize the aqueous scraps of paper, plastics tablet separates the aqueous scraps of paper and plastics tablet with the difference of specific gravity of water, the aqueous scraps of paper enter each jetsam pipe and escape and enter waste paper fibre repulping recovery system;It is pumped to inclined helix dehydrator 7 through tablet pump 6 from the plastics tablet of many rotary drums washing separation device discharging opening discharge together with water be dehydrated, the fine impurities such as silt are discharged by the screen cloth mesh that inclined screw is peripheral together with water, delivering to water treatment system, the water after precipitation purifies is recycled to be used in washing process;Plastics tablet after dehydration is elevated is delivered to buffer bin 7, and in buffer bin, tablet moisture content is less than 35%;The load displacing screw washing the rear buffered feed bin of plastics tablet 8 is released outside storehouse and is delivered to double-screw impregnator 10 by the 3rd conveying worm 9, in double-screw impregnator 10, material is concentrated by two engagements homodromal screw extruding, pass sequentially through three sections of extrusion shearings and crumple neat and well spaced section, it is sheared and rubs neat and well spaced one-tenth small pieces and pellet shape granule, simultaneously, the free water contained in tablet is concentrated extrusion by force, being discharged into water treatment system by draining filter screen, the water after precipitation purifies is recycled to be used in washing process.Material can produce substantial amounts of frictional heat when being extruded shearing and rub, and temperature of charge is up to 80 ~ 90 DEG C, and tablet moisture content is down to less than 25%;Plastics material slabbing after and granule neat and well spaced by double-screw impregnator 10 enters drying machine 11 hot air drying of net belt type, and dry air uses jet chimney indirectly to heat, and steam pressure is 0.5MPa, and air consumption is 350kg/t tablet;Dried tablet delivers to storage bin 13 through the 4th conveying equipment 12, sells as commodity packing or enters upstream device mixing granulator.The present embodiment resource reclaim comprehensive utilization ratio is about 96%, and consumes about 50 ~ 80% by the reduction washings that recycle of washings.
Embodiment 3 is preferred embodiment, the feed separation carried out in many rotary drums washing separation device is described as a example by embodiment 3: because the proportion of the scraps of paper is more than 1, and the proportion of polypropylene, polyethylene film class waste or used plastics sheet is less than the proportion of the scraps of paper, within the up flow velocity of the washings injected from each lower water inlet is set to 0.01m/s ~ 0.3m/s (containing 0.01m/s and 0.3m/s), so that the impulse force of up current is less than the difference of the difference of scraps of paper gravity in water with buoyancy, simultaneously greater than thin film class waste or used plastics sheet gravity in water with buoyancy in each body.The scraps of paper so mixed and waste or used plastics sheet, through the washing of homodromal multiple rotary drums, break up, be gradually disengaged out in washing cavities;The scraps of paper, due to water suction profit, gradually sink down into jetsam pipe in current the most up in each body, and thin film class waste or used plastics tablet is not because absorbing water and proportion gentlier floats on the water surface, and being pulled over by homodromal multiple rotary drums moves forward to discharging opening.In embodiment 1 and embodiment 2, wash and isolate the light impurity contained in the material such as scraps of paper by many rotary drums washing separation device, be also identical principle.
External circe speed at rotary drum is 1m/s, over dry mixed material and washings weight ratio are 3:97, i.e. wash concentration be 3% wash conditions under test, experiment proves, within the up flow velocity of the washings that each lower water inlet injects is set to 0.01m/s ~ 0.3m/s, can be appropriate realize efficiently separating of the aqueous scraps of paper and film plastic tablet, the most up flow velocity is excessive, the aqueous scraps of paper of sedimentation can be formed too high impulse force and affect separating effect;And under the effect of up current, with rotary drum rotate washing thin film class waste or used plastics tablet seldom from each frustum mouth entrance body in, also can be by the washing cavities of the most up current refunds body even if falling into, therefore do not have up flow velocity or up flow velocity too small, can not effectively counter for the film plastic tablet being strayed into body with current sending back in washing cavities be pulled over toward outbound course.Take full advantage of the aqueous scraps of paper, plastics tablet and the difference of specific gravity of water, it is achieved that the scraps of paper and the high-efficient washing of plastic film chip and separation.
Above example does not constitute restriction to the present invention, and relevant staff is in the range of without departing from the technology of the present invention thought, and carried out various changes and modifications, and all falls within protection scope of the present invention.

Claims (6)

1. a thin film class technics of reclaim of plastic waste recycling washing and purifying method, it is characterised in that: the method uses thin film Class technics of reclaim of plastic waste recycling washing, purifying system, by material operation traffic direction, this system include the first conveying equipment, Shredder, the second conveying equipment, tumbler-type washing machine, many rotary drums washing separation device, tablet pump, inclined screw are dehydrated Machine, buffer bin, the 3rd conveying worm, double-screw impregnator, drying machine, the 4th conveying equipment and storage bin;Should Method includes:
1. material papering section:
Material is delivered to after shredder is broken into tablet by the first conveying equipment;Then it is delivered to turn by the second conveying equipment Drum washing machine add washings adjust concentration be 3~5% carry out washing, sediment, remove the heavy seeds being mingled in material;
2. centrifugal station is washed:
Water-containing materials after the washing export material papering section is delivered to many rotary drums washing separation device, utilizes thin film class to give up The aqueous scraps of paper, plastics tablet and the difference of specific gravity of water mixed in old plastics, washs and isolates the aqueous scraps of paper and plastics tablet, The aqueous scraps of paper go out from each jetsam bank of tubes, and plastics tablet is pulled over and moved forward to discharging opening, are then pumped to inclined screw by tablet pump and take off Water machine is dehydrated;
3. machinery rubs neat and well spaced section:
Plastics tablet after washing the dehydration that centrifugal station exports again is delivered to buffer bin;The discharge spiral shell of buffered feed bin The material of rotation metering output is delivered to double-screw impregnator by the 3rd conveying worm, is sheared and rubs in double-screw impregnator It is twisted into small pieces and pellet shape granule, the simultaneously free water in extruded material;
4. dry storage section:
The plastics tablet that machinery is rubbed neat and well spaced section of output is delivered to drying machine hot air drying, then defeated by the 4th conveying equipment Deliver to storage bin storage;
In described 2. washing centrifugal station, along the mixed material horizontal feed direction of many rotary drums washing separation device, from respectively The up flow velocity of the washings that individual lower water inlet injects successively decreases successively.
Thin film class technics of reclaim of plastic waste the most according to claim 1 recycling washing and purifying method, it is characterised in that: Described 2. washing centrifugal station is: 1. material papering section is exported mix the aqueous scraps of paper, plastics tablet and water wash rear film Class waste or used plastics is delivered to many rotary drums washing separation device, injects from the upper water inlet of many rotary drums washing separation device and washes While washing water, from each, water inlet injects washings, up flow velocity of the washings that water inlet injects from each, if The difference of gravity and buoyancy for making the scraps of paper during the impulse force of up current is less than washings in each body, simultaneously greater than washings The gravity of middle plastics tablet and the difference of buoyancy;Wash by homodromal multiple rotary drums, separate, break up material, alternately Open and close each loading and unloading material valve and each lower discharge valve is discharged and is deposited on the aqueous scraps of paper in each jetsam pipe;By homodromal multiple Plastics tablet is pulled over and is moved forward to discharging opening by rotary drum, is then sent to inclined helix dehydrator and removes residual impurity complete further Dehydration, residual impurity and water is become to be discharged by the screen cloth mesh of inclined helix dehydrator.
Thin film class technics of reclaim of plastic waste the most according to claim 1 recycling washing and purifying method, it is characterised in that: In described 2. washing centrifugal station, from each of many rotary drums washing separation device, the up flow velocity of water inlet injection is The washings of 0.01m/s~0.3m/s;The hot blast of the drying machine of described 4. dry storage section uses jet chimney indirectly to heat.
Thin film class technics of reclaim of plastic waste the most according to claim 1 recycling washing and purifying method, it is characterised in that: The hot blast of the drying machine of described 4. dry storage section uses jet chimney indirectly to heat, and steam pressure is 0.4~0.6MPa.
Thin film class technics of reclaim of plastic waste the most according to claim 1 recycling washing and purifying method, it is characterised in that: The hot blast of the drying machine of described 4. dry storage section uses electrical heating.
Thin film class technics of reclaim of plastic waste the most according to claim 1 recycling washing and purifying method, it is characterised in that: In described 1. material papering section, after tumbler-type washing machine washing, the sediment impurity that obtains enters fixed-end forces system, described washes the most again Wash the aqueous scraps of paper in centrifugal station to be discharged into waste paper repulping through the jetsam pipe of many rotary drums washing separation device and reclaim system System, the residual impurity discharged by the sieve plate mesh of inclined helix dehydrator and water enter water treatment system, purify through precipitation Posterior circle is back to washing process;Described 3. machinery is rubbed the free water discharged by draining filter screen in neat and well spaced section and is entered at water Reason system, purifies Posterior circle through precipitation and is back to washing process.
CN201410348983.8A 2014-07-21 2014-07-21 Thin film type waste plastic recycling, reusing, washing and purifying method Active CN104139471B (en)

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CN201410348983.8A CN104139471B (en) 2014-07-21 2014-07-21 Thin film type waste plastic recycling, reusing, washing and purifying method

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CN201610200474.XA CN105729677B (en) 2014-07-21 2014-07-21 A kind of flow velocity successively decreases more rotary drum film class technics of reclaim of plastic waste reuse methods
CN201410348983.8A CN104139471B (en) 2014-07-21 2014-07-21 Thin film type waste plastic recycling, reusing, washing and purifying method
CN201610203059.XA CN105728171B (en) 2014-07-21 2014-07-21 A kind of more rotary drum film class technics of reclaim of plastic waste recycle washing and purifying method

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CN201610203059.XA Division CN105728171B (en) 2014-07-21 2014-07-21 A kind of more rotary drum film class technics of reclaim of plastic waste recycle washing and purifying method
CN201610200474.XA Division CN105729677B (en) 2014-07-21 2014-07-21 A kind of flow velocity successively decreases more rotary drum film class technics of reclaim of plastic waste reuse methods

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CN105945037B (en) * 2016-06-21 2020-07-17 广东致顺化工环保设备有限公司 Defibering, paving and screening device and method for regenerated and recycled materials
CN106049144B (en) * 2016-06-21 2018-03-02 广东致顺化工环保设备有限公司 A kind of potcher in regenerated papermaking tailings regeneration process
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