CN104139470A - Thin film type waste plastic recycling, reusing, washing and purifying system - Google Patents

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

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Publication number
CN104139470A
CN104139470A CN201410347036.7A CN201410347036A CN104139470A CN 104139470 A CN104139470 A CN 104139470A CN 201410347036 A CN201410347036 A CN 201410347036A CN 104139470 A CN104139470 A CN 104139470A
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CN
China
Prior art keywords
washing
discharging opening
charging aperture
screw
conveying equipment
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Granted
Application number
CN201410347036.7A
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Chinese (zh)
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CN104139470B (en
Inventor
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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Application filed by JIANGSU JINWO MACHINERY CO Ltd filed Critical JIANGSU JINWO MACHINERY CO Ltd
Priority to CN201610201938.9A priority Critical patent/CN105728170B/en
Priority to CN201610203631.2A priority patent/CN105856455B/en
Priority to CN201410347036.7A priority patent/CN104139470B/en
Publication of CN104139470A publication Critical patent/CN104139470A/en
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Publication of CN104139470B publication Critical patent/CN104139470B/en
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Classifications

    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B2017/001—Pretreating the materials before recovery
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B2017/001—Pretreating the materials before recovery
    • B29B2017/0015—Washing, rinsing
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/044—Knives
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

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.

Description

A kind of film class technics of reclaim of plastic waste recycling washing, purifying system
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 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 leaves infinite future trouble i.e. " white pollution ".Since there being plastic products, just inevitably produced old plastics, and along with passage of time, more new raw materials come into operation, waste or used plastics is significantly and rises.Because waste or used plastics is difficult for degradation with aging at normal temperatures, thereby form the white pollution that grows with each passing day, make ecological environment subject to severe risks of damage.
China's plastic products output, consumption all occupy the whole world the first, and year consumption three kilograms of left and right of plastics (year is consumed eight kilograms per capita in developed country) per capita, white pollution degree occupies the whole world the 4th.The plastic products discarded of take are well sold and in short supply as the regenerated granule market that Raw material processing forms, and can realize the benign cycle of the utilization of resources, of far-reaching significance.The film class waste or used plastics such as plastic sheeting for farm use, convenient bag, bag of cement, food pack, woven bag are all the raw material sources of regenerated granule.Particularly utilize waste paper as the paper mill of raw material, waste paper per ton can produce 5 ~ 8% solid gurry, wherein take polypropylene, polyethylene film class waste or used plastics as main, accounting 80 ~ 90%, by the paper mill of producing 1000000 tons of lateral moulds per year, solid gurry 5 ~ 80,000 ton of year generation, containing waste or used plastics 4 ~ 70,000 ton, recycling can produce huge economic benefit, reduces environmental pollution simultaneously.
Because film class waste or used plastics unit weight is low, volume is large, complicated component, particularly broken and washing, purifying difficulty, need expend a large amount of water resources, and existing reclaiming field mainly produces with casual household, small workshop mode, be simply equipped, small scale, very easily causes secondary environmental pollution.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of film class technics of reclaim of plastic waste recycling washing, purifying system, and then a kind of film class technics of reclaim of plastic waste recycling washing and purifying method is provided.
Technical scheme: for solving the problems of the technologies described above, film class technics of reclaim of plastic waste recycling washing, purifying system provided by the invention, press material operation traffic direction, comprise 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, triple helical conveyer, twin-screw impregnator, drying machine, the 4th conveying equipment and storage bin, the discharging opening of described the first conveying equipment is over against the charging aperture of shredder, the discharging opening of described shredder is over against the charging aperture of the second conveying equipment, the discharging opening of described the second conveying equipment is over against the charging aperture of tumbler-type washing machine, the discharging opening of described tumbler-type washing machine is communicated with the charging aperture in many rotary drums washing separation device, the discharging opening below of described many rotary drums washing separation device is provided with container, 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 is communicated with the charging aperture of inclined helix dehydrator, the discharging opening of described inclined helix dehydrator is communicated with the charging aperture of buffer bin, the discharging opening of described buffer bin is communicated with the charging aperture of triple helical conveyer, the discharging opening of described triple helical conveyer is communicated with the charging aperture of twin-screw impregnator, the discharging opening of described twin-screw impregnator is communicated with the charging aperture of drying machine, the discharging opening of described drying machine is communicated with the charging aperture of the 4th conveying equipment, described the 4th discharging opening of conveying equipment and the charging aperture of storage bin are communicated with.
Preferably, described the 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 wherein comprises 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, and described rotary drum is located in washing cavities and is subject to rotary drum driving device to drive rotation; The organism bottom shape of below, described rotary drum position is inversed taper platform shape; One end of the contiguous charging aperture of described body is provided with water inlet, and the below of the lower frustum mouth of the inversed taper platform shape of described organism bottom is provided with the body being communicated with lower frustum mouth, and tube wall is provided with lower water inlet; The below 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.Adopt the tumbler-type washing machine of this structure to form up current by lower water inlet water inlet, the thrust of up current precipitates downwards effectively reducing the material that proportion is lighter, only make the heavier heavy seeds of proportion sink to sediment pipe as metal object, stone etc., can effectively remove the heavy seeds in material, and reduce greatly the loss that material easily causes in the process of washing removing impurities.
Preferably, many rotary drums washing separation device wherein comprises body, and top, described body one end is provided with charging aperture, its other end is provided with discharging opening, in body, be provided with washing cavities, in described washing cavities, be provided with rotary drum, between charging aperture and discharging opening, set gradually two or more rotary drums; Described organism bottom shape is a plurality of inversed taper platform shape arranged side by side, and the position of inversed taper platform shape is corresponding one by one with rotary drum position, and is positioned at the below of corresponding rotary drum position; One end of the contiguous charging aperture of described body is provided with water inlet, and the equal correspondence in below of the lower frustum mouth of each inversed taper platform shape of described organism bottom is provided with the body being communicated with lower frustum mouth, and the equal correspondence of each tube wall is provided with lower water inlet; The equal correspondence in below of each body is provided with jetsam pipe, and the equal correspondence in upper end of each jetsam pipe is provided with loading and unloading material valve, and the equal correspondence in lower end is provided with lower discharge valve.As this preferred version further preferably: the equal correspondence in each time water inlet of described many rotary drums washing separation device is provided with current velocity controller, in described each body, all correspondence is provided with current meter, and described loading and unloading material valve and the lower discharge valve corresponding with it are the automatic valve that interval alternately opens and closes.This many rotary drums washing separation device can inject washings by upper and lower water inlet simultaneously, alternately open and close the method for upper and lower discharge valve, utilize the proportion of different material in mixed material different, the up flow velocity of controlling the washings of each lower water inlet injection, effectively washs and isolates the different material that has difference of specific gravity.The up flow velocity of the washings that each lower water inlet that further can successively decrease successively by configuration injects, obtains the laddering separation of mixed material and incremental deposition effect.Simultaneously can pass through current velocity controller, current meter, more accurately control flow rate of water flow, by the automatic buildup discharging of automatic valve, effective guarantee the continuity of production.
Preferably, described inclined helix dehydrator comprises spiral case, in spiral case, be provided with the spiral that is subject to driving device for slow-run to drive rotation, described spiral case and inner spiral thereof are obliquely installed from low to high along mass transport direction, the two ends of described spiral case are respectively the oblique lower end of shell and the oblique upper end of shell, the top that described shell is positioned at the oblique lower end of shell is provided with charging aperture, the bottom that is positioned at the oblique lower end of shell is provided with discharge outlet, the bottom that is positioned at the oblique upper end of shell is provided with discharging opening, and the lower parallel that is positioned at spiral in described spiral case is provided with sieve plate.
Buffer bin wherein can be selected popular response storehouse, this area, as a further improvement on the present invention, and preferably even blanking type buffer bin.Described even blanking type buffer bin, comprises warehouse and even doffer, and warehouse top is provided with charging aperture, and warehouse bottom is provided with blanking port; Described even doffer, comprises housing, is provided with load displacing screw in housing, and housing one side lower part is provided with the discharging opening of reaction warehouse, and the charging aperture of this even doffer is the blanking port of reaction warehouse warehouse bottom; Described load displacing screw comprises helical axis and is arranged on the helical blade on helical axis, and the position that described helical axis is positioned at discharging opening top is fixed with even blanking ring, and described even blanking ring is consistent with the central axis of described helical axis; Described even blanking ring comprises 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 even blanking type reaction warehouse is trapezoidal side storehouse; Described even doffer comprises two above load displacing screws, and every load displacing screw includes helical axis and helical blade, the variable-pitch auger blade of described helical blade for changing from small to big gradually along throughput direction pitch; The position that the helical axis of every load displacing screw is positioned at discharging opening top is all fixed with even blanking ring, the helical axis central axis that each even blanking ring is corresponding with it is consistent, and the helical blade rotation direction on multi start thread blade on each the even blanking ring load displacing screw corresponding with it is consistent; Described two above load displacing screws are drive respectively, the helical axis reverse rotation of adjacent load displacing screw.This even blanking type reaction warehouse can be realized even blanking by even blanking ring, be conducive to downstream pulping equipment steady production, fluctuation of load amplitude is reduced within 10 ~ 15% above by original one times, has reduced equipment failure rate, improve equipment dependability, stablized stock quality.On this basis, further can counter-rotate by two above load displacing screws, make two reverse rotations of material on contiguous load displacing screw especially anti-under the common promotion of the helical blade rotating, more balanced passing forward, then through the stirring of even blanking ring, break up, continuous uniform must fall to upstream device from discharging opening.On load displacing screw, the design of the varying pitch of helical blade can be raised the efficiency so that material is transitioned into gradually loose condition (of surface) along helical axis throughput direction by full state in course of conveying, reduces spiral running load and wearing and tearing.
Preferably, twin-screw impregnator in native system, as described in the Chinese patent application of the application number of submitting on September 11st, 2012 is 201210332112.8, publication number is CN 102864669 A " a kind of twin-screw impregnator " by name, its full content is incorporated herein by reference.Also can be that its full content is incorporated herein by reference described in the Chinese patent application of " a kind of twin-screw impregnator " by name of ZL 201220458032.2 as the grant number of submitting on September 11st, 2012.Above-mentioned twin-screw impregnator comprises frame and is arranged on motor, speed-changing gear box, movable crown gear coupling, machine barrel and two screw rods in frame, described motor is connected with two screw drive by speed-changing gear box and movable crown gear coupling, described two screw rods are parallel to each other and be arranged on rotationally 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 cover, the first extrusion spiral cover, the second conveyor screw cover, the second extrusion spiral cover, the 3rd conveyor screw cover and the 3rd extrusion spiral cover successively along throughput direction, the hand of spiral of described first, second, third conveyor screw cover is contrary with the hand of spiral of described first, second, third extrusion spiral cover, and the pitch of described the first conveyor screw cover reduces gradually along throughput direction; Described machine barrel bottom is provided with waste liquid hole; On the spiral shell rib of described first, second, third extrusion spiral cover, have slot; Described machine barrel is upper and lower dissection type machine barrel, comprises symmetrical being fixedly installed on first machine barrel in frame and able to turn on or off being connected to second machine barrel in frame of connecting.Preferably, described machine barrel top is provided with and overlaps corresponding liquid with the 3rd conveyor screw and add hand-hole.
Drying machine wherein can be selected this area conventional drying machine, preferred net band drier.Described mesh-belt drier comprises 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 comprises the conveyer belt of multilayer horizontally set, and multilayer conveyer belt head and the tail section is crisscross arranged described in the vertical direction, and along mass transport direction, the head end of lower one deck conveyer belt stretches out the tail end of last layer conveyer belt; Described charging aperture is positioned at the head end top of top conveyer belt, and described discharging opening is positioned at the tail end below of lowermost layer conveyer belt; Described cabinet is provided with some air-heaters and some wet-emitting blowers around, described air-heater is connected with the air inlet, the air outlet that arrange on multi-level dryer mesh belt device with guide duct by air channel, and described wet-emitting blower is connected with the moisture exhausting port arranging on multi-level dryer mesh belt device by dehumidifying pipelines.
For solving the problems of the technologies described above, a kind of film class technics of reclaim of plastic waste recycling washing and purifying method provided by the invention, it uses above-mentioned film class technics of reclaim of plastic waste recycling washing, purifying system, and the method comprises:
1. material papering section:
Material is delivered to shredder by the first conveying equipment to be broken into after tablet; Then by the second conveying equipment be delivered to tumbler-type washing machine add washings adjust concentration be 3 ~ 5% wash, sediment, remove and be mingled in the heavy seeds in material;
2. wash centrifugal station:
Water-containing materials after the washing of material papering section output is delivered to many rotary drums washing separation device, utilize the difference of specific gravity of the moisture scraps of paper, plastics tablet and the water that mix in film class waste or used plastics, the moisture scraps of paper and plastics tablet are isolated in washing, the moisture scraps of paper are discharged from each jetsam pipe, plastics tablet is pulled over and is moved forward to discharging opening, then by tablet pump, be pumped to inclined helix dehydrator and further remove residual impurity and dewater, residual impurity and water are discharged by the screen cloth mesh of inclined helix dehydrator;
3. machinery is rubbed neat and well spaced section:
The plastics tablet washing again after the dehydration of centrifugal station output is delivered to buffer bin; The material of exporting through the load displacing screw metering of buffer bin is delivered to twin-screw impregnator by triple helical conveyer, is sheared and rubs into small pieces and group's granular solid matter, the simultaneously free water in extruded material in twin-screw impregnator;
4. dry storage section:
The plastics tablet of machinery being rubbed to neat and well spaced section of output is delivered to drying machine heated-air drying, then by the 4th conveying equipment, is delivered to storage bin and stores.
Preferably, the described centrifugal station that 2. washs is: the rear film class waste or used plastics of washing that mixes the moisture scraps of paper, plastics tablet and water of 1. material papering section output is delivered to many rotary drums washing separation device, when from many rotary drums washing separation device, water inlet injects washings, from each, water inlet injects washings, the up flow velocity of the washings that water inlet injects from each, be made as the poor of the gravity that makes the impulse force of up current in each body be less than the scraps of paper in washings and buoyancy, be greater than the poor of the gravity of plastics tablet in washings and buoyancy simultaneously; By homodromal a plurality of rotary drums washing, separated, break up material, alternately open and close each loading and unloading material valve and each time discharge valve discharge is deposited on the moisture scraps of paper in each jetsam pipe; By homodromal a plurality of rotary drums, plastics tablet is pulled over and moved forward to discharging opening, be then delivered to inclined helix dehydrator and further remove residual impurity and complete dehydration, residual impurity and water are discharged by the screen cloth mesh of inclined helix dehydrator.Preferably, described 2. washing in centrifugal station, from each of many rotary drums washing separation device, water inlet injects the washings that up flow velocity is 0.01m/s ~ 0.3m/s.Above-mentioned preferred method can further be removed the light impurity being mingled in material, as being greater than 1 the moisture scraps of paper, proportion slowly in up current, sinks gradually in each body of many rotary drums washing separation device, the plastics tablet that proportion is lighter swims in washings and rotates and pull over to outbound course with rotary drum, and under the effect of up current, plastics tablet seldom from each frustum mouth enter in body, also can be by the washing cavities of slowly up current refunds body even if fall into; Final plastics tablet is pulled over and is moved forward to discharging opening by rotary drum, and moisture scraps of paper sedimentation is accumulated in each jetsam pipe, by loading and unloading material valve and lower discharge valve, is is alternately opened and closed and discharges.
For fear of mixed material, enter after washing cavities, not yet obtain fully water suction profit, also not yet obtaining washing fully breaks up, just by lower frustum mouth and the body deposition coming above, fall into jetsam pipe in a large number, more or the meromict state of the material of the deposition separation that obtained like this, cleannes do not reach requirement yet.Thereby the further improvement of inventing as this method, described 2. washing in centrifugal station, along the mixed material horizontal feed direction of many rotary drums washing separation device, the up flow velocity of the washings that water inlet injects from each successively decreases successively.Because the up flow velocity of first lower water inlet is relatively large, so the impulse force of up current is larger, entering washing cavities washs in the mixed material of breaing up through the first rotary drum, small part through water suction profit open, break up, the comparatively sufficient moisture scraps of paper of separation, could by first body slowly up current sink gradually, and the material of meromict state cannot sink; The mixed material mixing that contains the plastics tablet Buddhist monk moisture scraps of paper that fully profit is opened that proportion is lighter swims in washings, the washing control zone of being pulled over to follow-up rotary drum is continued washing, is broken up, further water suction profit is disperseed more fully, the material of meromict state reduces gradually, the up flow velocity of the washings of each time water inlet injection successively decreases successively, the profit that can make progressively to increase is opened, is broken up, the comparatively sufficient moisture scraps of paper of separation, by each follow-up body, sink gradually successively, thereby obtain better laddering separating effect and incremental deposition effect.
Preferably, the hot blast of the drying machine of described 4. dry storage section adopts jet chimney indirect, 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 adopts electrical heating.
Preferably, the sediment impurity obtaining after tumbler-type washing machine washing in described 1. material papering section enters solid waste treatment system, describedly 2. wash again the moisture scraps of paper in centrifugal station and discharge and enter waste paper slurrying recovery system again through the jetsam pipe of many rotary drums washing separation device, residual impurity and the water of by the sieve plate mesh of inclined helix dehydrator, discharging enter water treatment system, and after precipitation purifies, circulating and recovering is in washing process; Described 3. machinery is rubbed the free water of discharging by draining filter screen in neat and well spaced section and is entered water treatment system, and after precipitation purifies, circulating and recovering is in washing process.
Beneficial effect: in film class technics of reclaim of plastic waste recycling washing, purifying system provided by the invention and washing and purifying method, after adopting shredder to shear waste materials by mechanical shear, preliminary washing sediment is removed heavy seeds, then in many rotary drums washing separation device, by multistage rotary drum, wash, and control the up flow velocity of the washings that each time water inlet inject, effectively remove the light impurity or the washing that are mingled in material and isolate the different material that has difference of specific gravity, and then utilize twin-screw impregnator that the plastics tablet obtaining is sheared and rubbed neat and well spaced one-tenth small pieces and group's granular solid matter, dry storage is standby.This method and system can realize the solid gurry comprehensive utilization in paper mill, waste paper fibre and waste or used plastics recycling respectively; and can realize automation, large-scale industrial production; radical cure small workshop mode dispersion processing secondary environmental pollution problem; comprehensive utilization ratio can reach more than 90%; and by recycling of washings, can reduce washings and consume 50 ~ 80%, when having reduced environmental pollution, guarantee the continuity of producing; save production space, there is significant meaning.
Further, washing, purifying system provided by the invention, can adopt tumbler-type washing machine to pass through lower water inlet water inlet and form up current, effectively reducing the lighter material of proportion precipitates downwards, only make the heavier heavy seeds of proportion sink to sediment pipe as metal object, stone etc., can effectively remove the heavy seeds in material, and reduce greatly the loss that material easily causes in the process of washing removing impurities.
Further, washing, purifying system provided by the invention, can adopt even blanking type buffer bin to realize even blanking by even blanking ring, be conducive to downstream pulping equipment steady production, fluctuation of load amplitude is reduced within 10 ~ 15% by original one times above, reduce equipment failure rate, improved equipment dependability, stablized stock quality;
Further, washing, purifying system provided by the invention, can adopt mesh-belt drier heated-air drying plastics tablet, saves production space, has improved efficiency.
Further, washing, purifying system and method provided by the invention, can be in the many rotary drums washing separation device adopting, the up flow velocity of the washings that each the lower water inlet successively decreasing successively by configuration injects, obtains the laddering separation of mixed material and incremental deposition effect.Also can more accurately control flow rate of water flow by current velocity controller, current meter, by the automatic buildup discharging of automatic valve, effective guarantee the continuity of producing.
Accompanying drawing explanation
Fig. 1 is the structural representation of 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 even blanking type buffer bin;
Fig. 9 is the structural representation of even blanking ring in even blanking type buffer bin;
Figure 10 is the structural representation of two load displacing screws of even doffer configuration in even blanking type buffer bin;
Figure 11 is the structural representation of mesh-belt drier;
Figure 12 is the top view of Figure 11.
The specific embodiment
Below in conjunction with the embodiment of accompanying drawing, system and the embodiment of method, the present invention is further described.
As shown in Figure 1, this film class technics of reclaim of plastic waste recycling washing, purifying system, press material operation traffic direction, comprise the first conveying equipment 1, shredder 2, the 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 8, triple helical conveyer 9, twin-screw impregnator 10, drying machine 11, the 4th conveying equipment 12 and storage bin 13, the discharging opening of described the first conveying equipment 1 is over against the charging aperture of shredder 2, the discharging opening of described shredder 2 is over against the charging aperture of the second conveying equipment 3, the discharging opening of described the second conveying equipment 3 is over against the charging aperture of tumbler-type washing machine 4, the discharging opening of described tumbler-type washing machine 4 is communicated with the charging aperture in many rotary drums washing separation device 5, the discharging opening below of described many rotary drums washing separation device 5 is provided with container, 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 output of tablet pump 6 is communicated with the charging aperture of inclined helix dehydrator 7, the discharging opening of described inclined helix dehydrator 7 is communicated with the charging aperture of buffer bin 8, the discharging opening of described buffer bin 8 is communicated with the charging aperture of triple helical conveyer 9, the discharging opening of described triple helical conveyer 9 is communicated with the charging aperture of twin-screw impregnator 10, the discharging opening of described twin-screw impregnator 10 is communicated with the charging aperture of drying machine 11, the discharging opening of described drying machine 11 is communicated with the charging aperture of the 4th conveying equipment 12, the discharging opening of described the 4th conveying equipment 12 is communicated 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 is wherein comprised of with the rotor of two relative counter-rotatings the stationary knife being fixed on casing, material enters after shredder, rely on the shearing forming between some cutterheads between two rotors and cutterhead and stationary knife secondary, material cutting is broken into the tablet of certain size, axle and cutterhead on axle in tandem that rotor is spline or hexagon section by centre form, can by adjust cutterhead thickness adjust shear after the size of material; Shredder can configure hilted broadsword roll structure as required, also can adopt double knife roller or multitool roll structure.
Tumbler-type washing machine 4 wherein can be selected the conventional tumbler-type washing machine in this area, provides a kind of specific implementation herein, and as shown in Figures 2 and 3, this tumbler-type washing machine comprises 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, and described rotary drum 402 is located in washing cavities and is subject to rotary drum driving device 404 to drive rotation; The organism bottom shape of described rotary drum 402 belows, position is inversed taper platform shape; One end of the contiguous charging aperture 401 of described body is provided with water inlet 406, and the below of the lower frustum mouth of the inversed taper platform shape of described organism bottom is provided with the body being communicated with lower frustum mouth, and tube wall is provided with lower water inlet 407; The below 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 material that cracks into tablet through shredder enters the charging aperture 401 of tumbler-type washing machine, washings are added by upper water inlet 406 and lower water inlet 407, rotary drum 402 is driven and continuous slow circumvolve by rotary drum driving device 404, tablet enters after scrubbing section, by the rotation of rotary drum 402, will wash continuously rear tablet and transfer to by discharging opening 403, heavy seeds sinks to sediment pipe 405 as metal object, stone etc.; During normal work, upper blow valve 408 is opened, lower blow valve 409 cuts out, be beneficial to slag charge and be precipitated into sediment pipe 405, when needs deslagging, upper blow valve 408 cuts out, lower blow valve 409 is opened, discharge sediment, then go up blow valve 408 and again open, lower blow valve 409 cuts out again, upper and lower blow valve alternately cuts out and opens and realize sediment, and sediment enters solid waste treatment system after discharging.In this structure, because lower water inlet 407 water inlets can form up current, the thrust of up current can effectively reduce the material that proportion is lighter and precipitate downwards, but the heavier heavy seeds of proportion still can sink to sediment pipe as metal object, stone etc., can effectively remove the heavy seeds in material, and reduce greatly the loss that material easily causes in the process of washing removing impurities.
As shown in Figure 4, many rotary drums washing separation device 5 wherein comprises body 520, described body 520 tops, one end are provided with charging aperture 510, its other end is provided with discharging opening 530, in body 520, be provided with washing cavities, in described washing cavities, be provided with rotary drum, between charging aperture and discharging opening, set gradually three rotary drums, be respectively the first rotary drum 541, the second rotary drum 542 and the 3rd rotary drum 543; Described body 520 bottom shapes are three inversed taper platform shapes arranged side by side, and the position of inversed taper platform shape is corresponding one by one with rotary drum position, and are positioned at the below of corresponding rotary drum position; Described inversed taper platform shape is large lower young taper type suitable for reading.One end of described body 520 contiguous charging apertures 510 is provided with water inlet 550, the equal correspondence in below of the lower frustum mouth of each inversed taper platform shape of described body 520 bottoms is provided with the body being communicated with lower frustum mouth, is respectively the first body 561, the second body 562 and the 3rd body 563; The upper end correspondence that the below that the first body 561 sidewalls are provided with first time water inlet 571, the first body 561 is provided with the first jetsam pipe 581, the first jetsam pipes 581 is provided with the first loading and unloading material valve 591, and lower end correspondence is provided with discharge valve 599 first time; The upper end correspondence that the below that the second body 562 sidewalls are provided with second time water inlet 572, the second body 562 is provided with the second jetsam pipe 582, the second jetsam pipes 582 is provided with the second loading and unloading material valve 592, and lower end correspondence is provided with discharge valve 598 second time; The upper end correspondence that the below that the 3rd body 563 sidewalls are provided with the 3rd time water inlet 573, the three bodys 563 is provided with the 3rd jetsam pipe 583, the three jetsam pipes 583 is provided with the 3rd loading and unloading material valve 593, and lower end correspondence is provided with discharge valve 597 the 3rd time.Certainly, also can be configured to as required the rotary drum of 4 rotary drums, 5 rotary drums or other quantity, corresponding body, lower water inlet, jetsam pipe, loading and unloading material valve, lower discharge valve are also identical quantity and position relationship.
The equal correspondence in described each time water inlet is provided with current velocity controller, and in described each body, all correspondence is provided with current meter, and described loading and unloading material valve and the lower discharge valve corresponding with it are the automatic valve that interval alternately opens and closes.Described lower discharge valve alternately opens and closes and can be set to, first open each loading and unloading material valve and close each time discharge valve a period of time, to deposit first kind material in jetsam pipe, then close each loading and unloading material valve and open discharge valve each time, to discharge first kind material from jetsam pipe, and then open each loading and unloading material valve and close discharge valve a period of time deposition material each time, and then close each loading and unloading material valve and open each time discharge valve and discharge material,, so alternately repeat at interval.Together with described body 520 is bolted spiral-lock by discerptible upper shell with lower house, each rotary drum is installed in the washing cavities within upper shell and lower house, by bearings, supported, toothed gearing electric motor is connected with the power shaft of each rotary drum and drives respectively its rotation.Described each rotary drum drives rotating Vortex by toothed gearing electric motor, and described toothed gearing electric motor adopts frequency control motor, and as shown in Figure 5, the first rotary drum 541 is supported by bearings 547 and bearings 548, and drives rotation by toothed gearing electric motor 549.
As shown in Figure 6, wherein each rotary drum comprises runner 306 and 5 groups of vane group that sequentially arrange along runner axial direction, be respectively the first vane group 301, the second vane group 302, the 3rd vane group 303, quaterfoil group 304 and the 5th vane group 305, every group of vane group comprises along the uniform some blades of runner circumferencial direction, and toothed gearing electric motor drives runner 306 rotations that are fixedly connected on power shaft by power shaft 307.These 5 groups of vane group are consistent along the material toggling direction of runner tangential direction; Be 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; Be positioned at runner shaft the second vane group 302 to the inside relative along the material toggling direction of runner axial direction with the first vane group 301 being adjacent; Be positioned at runner shaft the 3rd vane group 303 to the inside identical along the material toggling direction of runner axial direction with the second vane group 302 being adjacent; Be positioned at runner shaft quaterfoil group 304 to the inside and the material toggling opposite direction of the 3rd vane group 303 being adjacent along runner axial direction; Be positioned at runner shaft the 5th vane group 305 to the inside relative along the material toggling direction of runner axial direction with the quaterfoil group 304 being adjacent.The setting party of each vane group blade of flexible configuration is to obtain required material toggling direction as required.Effective coverage is broken up in the washing that first aspect has increased rotary drum like this; second aspect is gathered mixed material to washing and is broken up effective coverage; the third aspect can make the washing that current turbulization is more abundant, balanced break up mixed material; fourth aspect is rotated cancelling out each other of the centrifugal force that produces on runner by each vane group; play the effect of axial force self-balancing; improve Energy Efficiency Ratio, the stability of device running, extended the life-span of device.
Inclined helix dehydrator 7 wherein can be selected the conventional inclined helix dehydrator in this area, provide a kind of specific implementation form herein, as shown in Figure 7, this inclined helix dehydrator comprises spiral case 602, in spiral case 602, be provided with the spiral 603 that is subject to driving device for slow-run 604 to drive rotation, described spiral case 602 and inner spiral 603 thereof are obliquely installed from low to high along mass transport direction, the two ends of described spiral case 602 are respectively the oblique lower end of shell and the oblique upper end of shell, the top that described shell is positioned at the oblique lower end of shell is provided with charging aperture 601, the bottom that is positioned at the oblique lower end of shell is provided with discharge outlet 607, the bottom that is positioned at the oblique upper end of shell is provided with discharging opening 605, the lower parallel that is 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 washing are pumped to the charging aperture 601 of inclined helix dehydrator by tablet pump, and spiral 603 drives rotation by drive unit 604, and material is promoted and is delivered to discharging opening 605 discharges by spiral 603.Washings and residual impurity are discharged and are entered water treatment system through discharge outlet 607 by the mesh of sieve plate 606, and after precipitation purifies, circulating and recovering is in washing process.
Buffer bin 8 wherein can be selected the conventional feed bin in this area, preferably even blanking type buffer bin.As shown in Figure 8,
The even blanking type buffer bin of selecting in present embodiment comprises warehouse 1010 and even doffer, and warehouse 1010 is trapezoidal side storehouse, and warehouse top is provided with the charging aperture 1020 of reaction warehouse, and warehouse 1010 bottoms are provided with blanking port; This even doffer comprises housing, is provided with load displacing screw in housing, and described load displacing screw comprises helical axis 1040 and is arranged on the helical blade 1050 on helical axis; The helical axis 1040 of this load displacing screw is connected with the motor-driven that is located at housing one side, and housing opposite side bottom is provided with the discharging opening 1030 of reaction warehouse, and the charging aperture of this even doffer is the blanking port of warehouse 1010 bottoms; The position that described helical axis 1040 is positioned at discharging opening 1030 tops is fixed with even blanking ring 1060; Evenly the structural representation of blanking ring 1060 as shown in Figure 9, comprises body 1061, and the outer wall of body 1061 is fixedly connected with multi start thread blade 1062; The body 1061 of described even blanking ring is connected on described helical axis 1040 by welding or bolted, and evenly 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 directions on described load displacing screw.Certainly in the even doffer of this reaction warehouse, also can comprise the load displacing screw of two such drive, as shown in figure 10, every load displacing screw includes helical axis and helical blade, the variable-pitch auger blade of described helical blade for changing from small to big gradually along throughput direction pitch; The position that the helical axis of every load displacing screw is positioned at discharging opening top is all fixed with even blanking ring, the helical axis central axis that each even blanking ring is corresponding with it is consistent, and the helical blade rotation direction on multi start thread blade on each the even blanking ring load displacing screw corresponding with it is consistent; The helical axis reverse rotation of these two load displacing screws.In this configuration, in two reverse rotations of material on contiguous load displacing screw are especially anti-under the common promotion of the helical blade rotating, more balanced passing forward, then breaks up through the stirring of even blanking ring, and continuous uniform must fall to upstream device from discharging opening; On load displacing screw, the design of the varying pitch of helical blade can be raised the efficiency so that material is transitioned into gradually loose condition (of surface) along helical axis throughput direction by full state in course of conveying, reduces spiral running load and wearing and tearing.During work, slurry is sent in reaction warehouse warehouse 1010 continuously by the reaction warehouse feeding mouth 1020 at top, conveying equipment autoreaction storehouse, upstream, meet after the requirement of the technological design time of staying, in warehouse, material fullness rate is 70 ~ 80%, now load displacing screw fill material is and is full of compaction state, in the helicla flute of slurry between load displacing screw helical blade 1050, is and is full of piece bulk; When being positioned at the load displacing screw of reaction warehouse bottom and starting and rotate, in helicla flute, be one end that the material that is full of piece bulk is transferred to load displacing screw and approach discharging opening 1030 continuously; Slurry approaches load displacing screw tail end and before whereabouts, first passes through even blanking ring 1060, and after the multi start thread blade 1062 on even blanking ring 1060 stirs and breaks up, continuous uniform falls to upstream device.
Twin-screw impregnator wherein, as described in the Chinese patent application of the application number of submitting on September 11st, 2012 is 201210332112.8, publication number is CN 102864669 A " a kind of twin-screw impregnator " by name, it is incorporated herein by reference that its full content comprises accompanying drawing.Also can be that it is incorporated herein by reference that its full content comprises accompanying drawing described in the Chinese patent application of " a kind of twin-screw impregnator " by name of ZL 201220458032.2 as the grant number of submitting on September 11st, 2012.This twin-screw impregnator comprises frame and is arranged on motor, speed-changing gear box, movable crown gear coupling, machine barrel and two screw rods in frame, described motor is connected with two screw drive by speed-changing gear box and movable crown gear coupling, described two screw rods are parallel to each other and be arranged on rotationally 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 cover, the first extrusion spiral cover, the second conveyor screw cover, the second extrusion spiral cover, the 3rd conveyor screw cover and the 3rd extrusion spiral cover successively along throughput direction, the hand of spiral of described first, second, third conveyor screw cover is contrary with the hand of spiral of described first, second, third extrusion spiral cover, and the pitch of described the first conveyor screw cover reduces gradually along throughput direction; Between each conveyor screw cover and extrusion spiral cover, be provided with homogenizing ring; Described machine barrel bottom is provided with the waste liquid hole corresponding with the output of first, second conveyor screw cover, and place, waste liquid hole is provided with filtration castor, i.e. draining filter screen; On the spiral shell rib of described first, second, third extrusion spiral cover, have slot; Described machine barrel can be upper and lower dissection type machine barrel, comprises symmetrical being fixedly installed on first machine barrel in frame and able to turn on or off being connected to second machine barrel in frame of connecting.Further, described first machine barrel top is provided with and overlaps corresponding liquid with the 3rd conveyor screw and add hand-hole.During work, material advances to discharging opening direction by two engagements homodromal screw rod, pitch due to the first conveyor screw cover in course of conveying reduces gradually, material is gradually reduced and is full of screw channel, enter front i.e. the first homogenizing ring place of reverse crush zone extrusion spiral cover, it is maximum that extruding force reaches, material is pushed strongly, under the effect of forward extrusion power, material is forced through the slot on the first extrusion spiral cover spiral shell rib, and material is squeezed, shears, crumples the neat and well spaced physical dimension that makes in this process and diminishes; Same, again after the extruding of the second conveyor screw cover and the second extrusion spiral cover, the 3rd conveyor screw cover and the 3rd extrusion spiral cover, shearing, rubbing homogenizing, material is sheared rubs into small pieces and group's granular solid matter discharge, and the free water in extruded material is also discharged by filter castor simultaneously.
Drying machine wherein can be selected this area conventional drying machine, preferred net band drier.As shown in Figure 11 and Figure 12, the mesh-belt drier of selecting in present embodiment, comprises 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 comprises the conveyer belt of multilayer horizontally set, and multilayer conveyer belt head and the tail section is crisscross arranged described in the vertical direction, and along mass transport direction, the head end of lower one deck conveyer belt stretches out the tail end of last layer conveyer belt; Described charging aperture is positioned at the head end top of top conveyer belt, and described discharging opening is positioned at the tail end below of lowermost layer conveyer belt; Described cabinet is provided with some air-heaters 601 and some wet-emitting blowers 602 around, described air-heater 601 is connected with the air inlet, the air outlet that arrange on multi-level dryer mesh belt device 603 with guide duct by air channel, and described wet-emitting blower 602 is connected with the moisture exhausting port arranging on multi-level dryer mesh belt device 603 by dehumidifying pipelines.
The film class technics of reclaim of plastic waste recycling washing and purifying method that uses above-mentioned film class technics of reclaim of plastic waste recycling washing, purifying system, its specific embodiment is:
embodiment 1:farm-oriented mulch waste plastic regeneration reclaims
By take farm-oriented mulch waste or used plastics as main material is delivered to shredder 2 by the first conveying equipment 1, be fractured into the tablet of the length of side 20 ~ 50mm; Then by the second conveying equipment 3, tablet after fragmentation be delivered to tumbler-type washing machine 4 washs and remove and be mingled in the objectionable impurities such as metal object, stone and the grains of sand in tablet through sediment pipe, sediment enters solid waste treatment system, wash concentration 3%; After washing, tablet flows into many rotary drums washing separation device 5 together with water, when from many rotary drums washing separation device, water inlet injects washings, from each, water inlet injects the washings that up flow velocity is 0.3m/s, again wash and isolate the light impurity containing in material, as scraps of paper etc.Then plastics tablet is pumped to inclined helix dehydrator 7 dehydrations through tablet pump 6 together with water, the fine impurities such as silt screen cloth mesh by inclined screw periphery together with water is discharged, deliver to water treatment system, water circulation after precipitation purifies is back to washing process, plastics tablet after dehydration is raised and is delivered to buffer bin 7, and in buffer bin, tablet moisture content is lower than 25%; Washing rear plastics tablet releases outside storehouse and is delivered to twin-screw impregnator 10 by triple helical conveyer 9 through the load displacing screw of buffer bin 8, at the interior material of twin-screw impregnator 10, concentrated by two engagements homodromal screw extruding, successively by neat and well spaced section of three sections of extrusion shearing rubbings, be sheared and rub neat and well spaced one-tenth small pieces and group's granular solid matter, simultaneously, the free water containing in tablet is concentrated and is extruded by force, by draining filter screen, discharged and entered water treatment system, the water circulation after precipitation purifies is back to washing process.Material is extruded when shearing and rubbing can produce a large amount of frictional heats, and temperature of charge can reach 80 ~ 90 ℃, and tablet moisture content is down to below 15%; By twin-screw impregnator 10 neat and well spaced and granule after plastics material slabbing enter drying machine 11 heated-air dryings of net belt type, dry air adopts electrical heating; After dry, tablet is delivered to storage bin 13 through the 4th conveying equipment 12, and as commodity, upstream device mixing granulator is sold or entered in packing.The present embodiment resource reclaims comprehensive utilization ratio and is about 90%, and reduces washings consumption 50 ~ 80% left and right by recycling of washings.
In said process, through too much rotary drum washing separation device, again wash the light impurity that separation obtains and recycle as the moisture scraps of paper may be output to waste paper slurrying recovery system again.
embodiment 2:woven bag class waste plastic regeneration reclaims
By take woven bag class waste or used plastics as main material is delivered to shredder 2 by the first conveying equipment 1, be fractured into the tablet of the length of side 20 ~ 50mm; Then by the second conveying equipment 3, tablet after fragmentation be delivered to tumbler-type washing machine 4 washs and remove and be mingled in the objectionable impurities such as metal object, stone and the grains of sand in tablet through sediment pipe, sediment enters solid waste treatment system, wash concentration 4%; After washing, tablet flows into many rotary drums washing separation device 5 together with water, when from many rotary drums washing separation device, water inlet injects washings, from each, water inlet injects the washings that up flow velocity is 0.2m/s, again wash and isolate the light impurity containing in material, as scraps of paper etc.Then plastics tablet is pumped to inclined helix dehydrator 7 dehydrations through tablet pump 6 together with water, the fine impurities such as silt screen cloth mesh by inclined screw periphery together with water is discharged, deliver to water treatment system, water circulation after precipitation purifies is back to washing process, plastics tablet after dehydration is raised and is delivered to buffer bin 7, and in buffer bin, tablet moisture content is lower than 20%; Washing rear plastics tablet releases outside storehouse and is delivered to twin-screw impregnator 10 by triple helical conveyer 9 through the load displacing screw of buffer bin 8, at the interior material of twin-screw impregnator 10, concentrated by two engagements homodromal screw extruding, successively by neat and well spaced section of three sections of extrusion shearing rubbings, be sheared and rub neat and well spaced one-tenth small pieces and group's granular solid matter, simultaneously, the free water containing in tablet is concentrated and is extruded by force, by draining filter screen, discharged and entered water treatment system, the water circulation after precipitation purifies is back to washing process.Material is extruded when shearing and rubbing can produce a large amount of frictional heats, and temperature of charge can reach 80 ~ 90 ℃, and tablet moisture content is down to below 10%; By twin-screw impregnator 10 neat and well spaced and granule after plastics material slabbing enter drying machine 11 heated-air dryings of net belt type, dry air adopts jet chimney indirect, steam pressure is 0.4 ~ 0.6MPa; After dry, tablet is delivered to storage bin 13 through the 4th conveying equipment 12, and as commodity, upstream device mixing granulator is sold or entered in packing.The present embodiment resource reclaims comprehensive utilization ratio and is about 93%, and reduces washings consumption 50 ~ 80% left and right by recycling of washings.
In said process, through too much rotary drum washing separation device, again wash the light impurity that separation obtains and recycle as the moisture scraps of paper may be output to waste paper slurrying recovery system again.
embodiment 3:the solid gurry regeneration comprehensive in paper mill utilizes
By take the film class waste or used plastics such as waste paper, polypropylene, polyethylene, be that the solid gurry material in main paper mill 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, tablet after fragmentation be delivered to tumbler-type washing machine 4 washs and remove and be mingled in the objectionable impurities such as metal object, stone and the grains of sand in tablet through sediment pipe, sediment enters solid waste treatment system, wash concentration 5%, after washing, tablet flows into many rotary drums washing separation device 5 together with water, from many rotary drums washing separation device, water inlet injects washings with each lower water inlet simultaneously, mixed material horizontal feed direction along many rotary drums washing separation device, the up flow velocity of the washings that water inlet injects from each successively decreases successively, first time water inlet injects the washings that up flow velocity is 0.3m/s, second time water inlet injects the washings that up flow velocity is 0.2m/s, the 3rd time water inlet injects the washings that up flow velocity is 0.15 m/s, utilize the moisture scraps of paper, the separated moisture scraps of paper of difference of specific gravity and the plastics tablet of plastics tablet and water, the moisture scraps of paper enter each jetsam pipe and escape and enter waste paper fibre slurrying recovery system again, the plastics tablet of discharging from many rotary drums washing separation device discharging opening is pumped to inclined helix dehydrator 7 dehydrations through tablet pump 6 together with water, the fine impurities such as silt screen cloth mesh by inclined screw periphery together with water is discharged, deliver to water treatment system, the water circulation after precipitation purifies is back to washing process, plastics tablet after dehydration is raised and is delivered to buffer bin 7, and in buffer bin, tablet moisture content is lower than 35%, washing rear plastics tablet releases outside storehouse and is delivered to twin-screw impregnator 10 by triple helical conveyer 9 through the load displacing screw of buffer bin 8, at the interior material of twin-screw impregnator 10, concentrated by two engagements homodromal screw extruding, successively by neat and well spaced section of three sections of extrusion shearing rubbings, be sheared and rub neat and well spaced one-tenth small pieces and group's granular solid matter, simultaneously, the free water containing in tablet is concentrated and is extruded by force, by draining filter screen, discharged and entered water treatment system, the water circulation after precipitation purifies is back to washing process.Material is extruded when shearing and rubbing can produce a large amount of frictional heats, and temperature of charge can reach 80 ~ 90 ℃, and tablet moisture content is down to below 25%; By twin-screw impregnator 10 neat and well spaced and granule after plastics material slabbing enter drying machine 11 heated-air dryings of net belt type, dry air adopts jet chimney indirect, steam pressure is 0.5MPa, air consumption is 350kg/t tablet; After dry, tablet is delivered to storage bin 13 through the 4th conveying equipment 12, and as commodity, upstream device mixing granulator is sold or entered in packing.The present embodiment resource reclaims comprehensive utilization ratio and is about 96%, and reduces washings consumption 50 ~ 80% left and right by recycling of washings.
Embodiment 3 is preferred embodiment, the feed separation that the embodiment 3 of take carries out in many rotary drums washing separation device as example explanation: because the proportion of the scraps of paper is greater 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 that water inlet from each is injected is made as 0.01m/s ~ 0.3m/s (containing 0.01m/s and 0.3m/s), can be so that the impulse force of up current be less than the poor of the gravity of the scraps of paper in water and buoyancy in each body, be greater than the poor of the gravity of film class waste or used plastics sheet in water and buoyancy simultaneously.The scraps of paper that mix like this and waste or used plastics sheet, wash, break up through homodromal a plurality of rotary drums, in washing cavities, separates gradually; The scraps of paper are due to water suction profit, in each body, slowly in up current, sink down into gradually jetsam pipe, and film class waste or used plastics tablet is not because absorb water and proportion gentlier floats on the water surface, by homodromal a plurality of rotary drums, pulled over and moves forward to discharging opening.In embodiment 1 and embodiment 2, by many rotary drums washing separation device, wash and isolate material in the light impurity that contains as the scraps of paper, be also identical principle.
External circe speed at rotary drum is 1m/s, over dry mixed material and washings weight ratio are 3:97, be that wash concentration is to test under 3% wash conditions, experimental results show that, within the up flow velocity of the washings that each lower water inlet injects is made as 0.01m/s ~ 0.3m/s, can be appropriate realize the effective separated of the moisture scraps of paper and film plastic tablet, otherwise up flow velocity is excessive, can form too high impulse force and affect separating effect the moisture scraps of paper of sedimentation; And under the effect of up current, the film class waste or used plastics tablet that rotates washing with rotary drum seldom from each frustum mouth enter in body, also can be by the washing cavities of slowly up current refunds body even if fall into, therefore do not have up flow velocity or up flow velocity too small, can not effectively counter the sending back in washing cavities of the film plastic tablet that is strayed into body with current be pulled over toward outbound course.Take full advantage of the difference of specific gravity of the moisture scraps of paper, plastics tablet and water, realized the high-efficient washing of the scraps of paper and plastic film chip with separated.
Above embodiment does not form restriction to the present invention, and relevant staff is not within departing from the scope of the technology of the present invention thought, and various variation and the modification carried out, all drop in protection scope of the present invention.

Claims (10)

1. a film class technics of reclaim of plastic waste recycles washing, purifying system, it is characterized in that: by material operation traffic direction, this system comprises the first conveying equipment (1), shredder (2), the 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 (8), triple helical conveyer (9), twin-screw impregnator (10), drying machine (11), the 4th conveying equipment (12) and storage bin (13);
The discharging opening of described the first conveying equipment (1) is over against the charging aperture of shredder (2),
The discharging opening of described shredder (2) is over against the charging aperture of the second conveying equipment (3),
The discharging opening of described the second conveying equipment (3) is over against the charging aperture of tumbler-type washing machine (4),
The discharging opening of described tumbler-type washing machine (4) is communicated with the charging aperture in many rotary drums washing separation device (5),
The discharging opening below of described many rotary drums washing separation device (5) is provided with container, 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 output of tablet pump (6) is communicated with the charging aperture of inclined helix dehydrator (7)
The discharging opening of described inclined helix dehydrator (7) is communicated with the charging aperture of buffer bin (8),
The discharging opening of described buffer bin (8) is communicated with the charging aperture of triple helical conveyer (9),
The discharging opening of described triple helical conveyer (9) is communicated with the charging aperture of twin-screw impregnator (10),
The discharging opening of described twin-screw impregnator (10) is communicated with the charging aperture of drying machine (11),
The discharging opening of described drying machine (11) is communicated with the charging aperture of the 4th conveying equipment (12),
The discharging opening of described the 4th conveying equipment (12) is communicated with the charging aperture of storage bin (13).
2. film class technics of reclaim of plastic waste recycling washing, purifying system according to claim 1, is characterized in that: described the first conveying equipment (1) and the second conveying equipment (3) and the 4th conveying equipment (12) are chain scraper conveyor or belt conveyor.
3. film class technics of reclaim of plastic waste recycling washing, purifying system according to claim 1, is characterized in that: tumbler-type washing machine wherein comprises 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, and described rotary drum (402) is located in washing cavities and is subject to rotary drum driving device (404) to drive rotation; The organism bottom shape of below, described rotary drum (402) position is inversed taper platform shape; One end of the contiguous charging aperture of described body (401) is provided with water inlet (406), and the below of the lower frustum mouth of the inversed taper platform shape of described organism bottom is provided with the body being communicated with lower frustum mouth, and tube wall is provided with lower water inlet (407); The below 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).
4. film class technics of reclaim of plastic waste according to claim 1 recycles washing, purifying system, it is characterized in that: many rotary drums washing separation device wherein comprises body (520), described body (520) top, one end is provided with charging aperture (510), its other end is provided with discharging opening (530), body is provided with washing cavities in (520), in described washing cavities, be provided with rotary drum, between charging aperture (510) and discharging opening (530), set gradually two or more rotary drums; Described body (520) bottom shape is a plurality of inversed taper platform shape arranged side by side, and the position of inversed taper platform shape is corresponding one by one with rotary drum position, and is positioned at the below of corresponding rotary drum position; One end of the contiguous charging aperture of described body (510) is provided with water inlet (550), and the equal correspondence in below of the lower frustum mouth of each inversed taper platform shape of described body (520) bottom is provided with the body being communicated with lower frustum mouth, and the equal correspondence of each tube wall is provided with lower water inlet; The equal correspondence in below of each body is provided with jetsam pipe, and the equal correspondence in upper end of each jetsam pipe is provided with loading and unloading material valve, and the equal correspondence in lower end is provided with lower discharge valve.
5. film class technics of reclaim of plastic waste according to claim 4 recycles washing, purifying system, it is characterized in that: the equal correspondence in each time water inlet of described many rotary drums washing separation device is provided with current velocity controller, in described each body, all correspondence is provided with current meter, and described loading and unloading material valve and the lower discharge valve corresponding with it are the automatic valve that interval alternately opens and closes.
6. film class technics of reclaim of plastic waste according to claim 1 recycles washing, purifying system, it is characterized in that: described inclined helix dehydrator (7) comprises spiral case (602), in spiral case (602), be provided with the spiral (603) that is subject to driving device for slow-run (604) to drive rotation, described spiral case (602) and inner spiral (603) thereof are obliquely installed from low to high along mass transport direction, the two ends of described spiral case (602) are respectively the oblique lower end of shell and the oblique upper end of shell, the top that described shell is positioned at the oblique lower end of shell is provided with charging aperture (601), the bottom that is positioned at the oblique lower end of shell is provided with discharge outlet (607), the bottom that is positioned at the oblique upper end of shell is provided with discharging opening (605), the lower parallel that is positioned at spiral (603) in described spiral case (602) is provided with sieve plate (606).
7. film class technics of reclaim of plastic waste according to claim 1 recycles washing, purifying system, it is characterized in that: described buffer bin is even blanking type buffer bin, comprise warehouse (1010) and even doffer, warehouse top is provided with charging aperture (1020), and warehouse bottom is provided with blanking port; Described even doffer, comprises housing, is provided with load displacing screw in housing, and housing one side lower part is provided with the discharging opening (1030) of buffer bin, and the charging aperture of this even doffer is the blanking port of warehouse bottom; Described load displacing screw comprises helical axis (1040) and is arranged on the helical blade (1050) on helical axis, the position that described helical axis (1040) is positioned at discharging opening (1030) top is fixed with even blanking ring (1060), and described even blanking ring (1060) is consistent with the central axis of described helical axis (1040); Described even blanking ring (1060) comprises body (1061) and multi start thread blade (1062), described multi start thread blade (1062) is fixedly connected on the outer wall of body, described body (1061) retainer ring is upper around being socketed in helical axis (1040), and the rotation direction of described multi start thread blade (1062) is consistent with helical blade (1050) rotation direction on described load displacing screw.
8. film class technics of reclaim of plastic waste recycling washing, purifying system according to claim 7, is characterized in that: the warehouse of described even blanking type buffer bin (1010) is trapezoidal side storehouse; Described even doffer comprises two above load displacing screws, and every load displacing screw includes helical axis and helical blade, the variable-pitch auger blade of described helical blade for changing from small to big gradually along throughput direction pitch; The position that the helical axis of every load displacing screw is positioned at discharging opening top is all fixed with even blanking ring, the helical axis central axis that each even blanking ring is corresponding with it is consistent, and the helical blade rotation direction on multi start thread blade on each the even blanking ring load displacing screw corresponding with it is consistent; Described two above load displacing screws are drive respectively, the helical axis reverse rotation of adjacent load displacing screw.
9. film class technics of reclaim of plastic waste according to claim 1 recycles washing, purifying system, it is characterized in that: twin-screw impregnator wherein, comprise frame and be arranged on motor, speed-changing gear box, movable crown gear coupling, machine barrel and two screw rods in frame, described motor is connected with two screw drive by speed-changing gear box and movable crown gear coupling, described two screw rods are parallel to each other and be arranged on rotationally 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 cover, the first extrusion spiral cover, the second conveyor screw cover, the second extrusion spiral cover, the 3rd conveyor screw cover and the 3rd extrusion spiral cover successively along throughput direction, the hand of spiral of described first, second, third conveyor screw cover is contrary with the hand of spiral of described first, second, third extrusion spiral cover, and the pitch of described the first conveyor screw cover reduces gradually along throughput direction; Described machine barrel bottom is provided with waste liquid hole; On the spiral shell rib of described first, second, third extrusion spiral cover, have slot; Described machine barrel is upper and lower dissection type machine barrel, comprises symmetrical being fixedly installed on first machine barrel in frame and able to turn on or off being connected to second machine barrel in frame of connecting.
10. film class technics of reclaim of plastic waste recycling washing, purifying system according to claim 1, is characterized in that: described drying machine is mesh-belt drier, comprises cabinet and multi-level dryer mesh belt device (603); The top of described cabinet is provided with charging aperture (601), and bottom is provided with discharging opening (602); Described multi-level dryer mesh belt device (603) comprises the conveyer belt of multilayer horizontally set, and multilayer conveyer belt head and the tail section is crisscross arranged described in the vertical direction, and along mass transport direction, the head end of lower one deck conveyer belt stretches out the tail end of last layer conveyer belt; Described charging aperture (601) is positioned at the head end top of top conveyer belt, and described discharging opening (602) is positioned at the tail end below of lowermost layer conveyer belt; Described cabinet is provided with some air-heaters (604) and some wet-emitting blowers (605) around, described air-heater (604) is connected with upper air inlet, the air outlet arranging of guide duct and multi-level dryer mesh belt device (603) by air channel, and described wet-emitting blower (605) is connected by the upper moisture exhausting port arranging of dehumidifying pipelines and multi-level dryer mesh belt device (603).
CN201410347036.7A 2014-07-21 2014-07-21 A kind of thin film class technics of reclaim of plastic waste recycling washing, purifying system Active CN104139470B (en)

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CN201610203631.2A CN105856455B (en) 2014-07-21 2014-07-21 The more rotary drum film class technics of reclaim of plastic waste reutilization systems of flow control
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