CN105835262A - Dry cleaning system and method of waste plastic - Google Patents

Dry cleaning system and method of waste plastic Download PDF

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Publication number
CN105835262A
CN105835262A CN201610187736.3A CN201610187736A CN105835262A CN 105835262 A CN105835262 A CN 105835262A CN 201610187736 A CN201610187736 A CN 201610187736A CN 105835262 A CN105835262 A CN 105835262A
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China
Prior art keywords
waste
cleaning
used plastics
dielectric
purging system
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CN201610187736.3A
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CN105835262B (en
Inventor
赵由才
周涛
张骏
孙艳秋
戴世金
夏发发
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Tongji University
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Tongji University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00Recovery of plastics or other constituents of waste material containing plastics
    • B29B2017/001Pretreating the materials before recovery
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

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  • Cleaning In General (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)

Abstract

The invention relates to a dry cleaning system and method of waste plastic. The system includes a solid medium cleaning device, a separation device, an air medium cleaning device and a dust removing device. The cleaning method comprises the steps of: using sand stones to remove surface attachment of the waste plastic off; separating the sand stones and cleaned waste plastic by a sorting device, recycling the sand stones, sending the clean waste plastics into the air medium cleaning device, cleaning dust on the surface of the waste plastics; and finally dedusting the gas discharged by the air medium cleaning device in the dust removing device. Compared with the prior art, the invention has the advantages of simple structure and convenient operation, not only can save water resources, but also can remove the pollutants with strong adsorptive force on the plastics, and provides favorable conditions for the recycling and reusing of the plastics.

Description

The dry method purging system of a kind of waste or used plastics and method
Technical field
The present invention relates to waste or used plastics anhydrous cleaning field, be specifically related to dry method purging system and the method for a kind of waste or used plastics.
Background technology
Along with the development of plastics industry, the consumption figure of plastic constantly increases, and produces more waste plastic.Need to alleviate it by recycling and reuse and because of landfill and burn the environmental problem brought.Plastics are the most unavoidably by pollution in various degree, and recycled plastic need to be carried out improving the quality of regeneration product, it is to avoid bring serious impact to regenerated resources comprehensive utilization.
Traditional waste plastics cleaning technique, using water as cleansing medium, mainly by using commercially available abluent to rinse or agitator treating in various plant equipment, is dried after having cleaned.Use wet-cleaning to need to be equipped with sewage disposal system and drying device, increase extra cost, cause serious secondary pollution simultaneously.
Chinese utility model patent ZL02251828.2 discloses a kind of plastic dry cleaning machine, by housing involutory at the bottom of semicircular cabinet cover, casing be encapsulated in spiral-tube therein and form, this spiral-tube two ends bearing is placed on pedestal, and spiral-tube is welded with 4 groups of stock guides by left-handed decile, is washed flitch and delivery sheet.Stock guide is a rectangular panel blocks, favours spiral-tube axis;Washing flitch is blocks, is arranged to trapezoidal interruption shape;Delivery sheet is a rectangular panel blocks, with spiral-tube axis in the same direction;Housing is fixed on pedestal, and housing end face correspondence stock guide one end is provided with a feeding mouth, and housing bottom correspondence delivery sheet one end is provided with a discharging opening;One end of shell encapsulated delivery sheet is relatively large in diameter;Small diameter portion at the bottom of casing below centrage, punching press at the bottom of casing is made bar palisade or with spiral steel be welded into bar palisade make sieve the end.Chinese utility model patent CN 202877096 discloses another kind of plastic dry cleaning machine, the housing wherein encapsulating helix drum is installed on pedestal, helix drum is rotatably provided on pedestal and connects driver part and connects, some groups of stock guides are set gradually vertically on it, wash flitch and some groups of delivery sheets for some groups, some groups of stock guides and the some groups of the most left-handed deciles of delivery sheet are arranged, wash the left-handed equal difference of flitch for some groups to arrange, wherein, stock guide is rectangular panel blocks the axis favouring helix drum, wash flitch to be blocks and be arranged to trapezoidal interruption shape, delivery sheet is rectangular panel blocks with the axis of helix drum in the same direction, one end of the end face correspondence stock guide of housing is provided with feeding mouth, one end of the bottom correspondence delivery sheet of housing is provided with discharging opening, correspondence is washed the part of flitch and is provided with the sieve end.
The scope of application using above-mentioned plastic dry cleaning machine is less: relatively light for polluting, and the more weak plastics of attachment adhesion are the most practical, and for serious pollution, the waste or used plastics of attachment strong adsorption can not reach good cleaning performance.Therefore needing to develop a kind of range wide, simple in construction, the waste or used plastics can being carried out according to different pollution levels and cleaning requirement is without water cleaning method and device.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of applied widely, dry method purging system of waste or used plastics that cleaning performance is good and method are provided.
The purpose of the present invention can be achieved through the following technical solutions: the dry method purging system of a kind of waste or used plastics, and this purging system includes:
Solid dielectric cleans device: utilize sandstone to be come off by waste or used plastics surface attachments, cleans waste or used plastics;
Sorting unit: include sandstone outlet and plastic outlet, this sorting unit is positioned at described solid and cleans device downstream, and the waste or used plastics after sandstone with cleaning separates;
Air dielectric cleans device: air dielectric is cleaned the entrance of device and is connected with the plastic outlet of described sorting unit by conveyer belt, for cleaning the floating dust on waste or used plastics surface;
Dust arrester: the exhaust outlet cleaning device with described air dielectric is connected, carries out dedusting for air dielectric is cleaned device expellant gas.
It is the horizontal mixer driven by buncher that described solid dielectric cleans device, and the particle diameter of described sandstone is 4~14 mesh.Preferably, this solid dielectric cleans the optional horizontal buncher of device, and its model is 5IK90RGN-CF;Horizontal buncher main tank diameter about 14cm, blade length is 5.8cm.
Described sorting unit is the one in pneumatic separator or vibrating screen classifier.
Described air dielectric cleans device and includes:
Tank body: this tank body top is provided with left air outlet, right air outlet and charging aperture, described left air outlet and right air outlet are connected with described dust arrester by pipeline, described charging aperture is connected with described sorting unit by conveyer belt, the bottom of tank body is provided with discharging opening, the both sides of tank body are provided with left air inlet and right air inlet, being provided with the filter being arranged in order between described charging aperture and discharging opening, the two ends of described filter are aperture filter, are provided with macropore filter between described aperture filter;After waste or used plastics enters tank body, area due to plastics is more than the mesh of aperture filter, so along with air dielectric moves between aperture filter, the floating dust of frosting is made to remove by mutually collision or collision macropore filter, the floating dust of removing is along with air dielectric is by aperture filter, and entering in follow up device, the material of described tank body is preferably lucite;
Electronic break-in switchs: including 1 import and 2 outlets, 2 outlets are equipped with valve, and 2 outlets are connected with left air inlet and the right air inlet of described tank body respectively by pipeline;
Blower fan: the import with described electronic break-in switch is connected, and is used for providing air dielectric, it is CZR200-50 that blower fan model is preferably, and power is preferably 200w, and air quantity can be adjusted according to different requirement of degree of cleaning, preferably 3000m3/h;
Relay: switch the opening and closing of 2 outlets for controlling electronic break-in.
The left air inlet of described tank body and right air inlet are equipped with deep bead, and described deep bead upper end is connected through the hinge with tank body, and deep bead lower end is rotatable, i.e. deep bead utilizes door loose-leaf to install, and can be controlled without individually controlling by stream pressure.Air-flow is entered by left air inlet when cleaning main tank, and left end deep bead is washed open by air-flow, and right-hand member deep bead is issued to vertical closed mode at airflow function;When in like manner air-flow is entered by right air inlet, right deep bead is opened, and left deep bead is closed.
The left air outlet of described tank body is provided with left electric gear aerofoil, and right air outlet is provided with right electric gear aerofoil, and described left electric gear aerofoil and right electric gear aerofoil are by described Control opening and closing.
The operation principle that this air dielectric cleans device is as follows: described relay and electronic break-in switch and left and right electric gear aerofoil is connected, and the electronic break-in of Control switchs to obtain the opening and closing of valve, makes air dielectric flow to the left or flow to the right.Within the working cycle, timing changes airflow direction, it is ensured that air-flow enters from left air inlet and right air inlet the most respectively within a working cycle and cleans main tank.When air-flow is entered the main tank of cleaning by left air inlet, left electric guard board is closed, and right electric guard board is opened;In like manner, air-flow is entered by right air inlet when cleaning main tank, and right electric guard board is closed, and left electric guard board is opened.
The mesh size of described aperture filter is 11~15 mesh, and macropore diameter is 2.0~3.0cm.
Additionally, connect by pagoda joint sealing between tank body and ventilation shaft, it is connected and sealed by rustless steel larynx hoop between blower fan and ventilation shaft, the specification of described pagoda joint is preferably 30 material 4 11/2*40mm, rustless steel larynx hoop specification is preferably LF-Y05 27-51, and ventilation shaft specification is 1.2 cun of flexible pipes.
Described dust arrester includes the one in sack cleaner, electric cleaner or gravitational precipitator.
A kind of cleaning method of the waste or used plastics using above-mentioned purging system, the method includes following step:
(1) by waste or used plastics oven drying at low temperature, and it is broken into 3~8cm2The fragment of size;
(2) step (1) gained fragment being placed in solid dielectric clean in device, utilize sandstone to be carried out, wherein, it is 40~60r/min that solid dielectric cleans the rotating speed of device, and scavenging period is 5~50min;
(3) after cleaning, fragment and sandstone transmit to sorting unit, by fragment after sandstone and cleaning separately;
(4) fragment after cleaning is delivered to air dielectric and cleans device, moved reciprocatingly in tank body by Control air dielectric, remove the floating dust of fragment surface after cleaning, obtain waste or used plastics product and tail gas;
(5) tail gas is entered in dust arrester, discharge after removing floating dust.
The temperature of step (1) described waste or used plastics oven drying at low temperature is 45~50 DEG C, and the time is 3~5h.
Step (4) described air dielectric reciprocal cycle is 40~80s, and this Cycle Length can require unrestricted choice according to the difference of degree of cleaning.
Compared with prior art, beneficial effects of the present invention is embodied in following several respects:
(1) this lightweight waste or used plastics anhydrous cleaning systems simple in construction, easy to operate, horizontal mixer rotating speed, blower fan wind-force size and the working cycle length set by relay circuit control module can be required according to the difference of degree of cleaning, widen the scope of application of system.
(2) this system operation uses dry clean technology, utilize sandstone cheap and easy to get and air as cleansing medium during waste or used plastics cleans, attachment pollutant are made to come off by the effectively physical cleaning power such as friction, collision, system operation is not related to the use of water, not only saving water resource compared with traditional WATER-WASHING METHOD and existing dry-cleaning equipment, the stronger absorption affinity pollutant on plastics can be removed simultaneously, provide advantage for plastic recycling.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the present invention;
Fig. 2 is that air dielectric cleans apparatus structure schematic diagram;
Fig. 3 is that macropore filter launches schematic diagram;
Fig. 4 is that aperture filter launches schematic diagram;
Fig. 5 is the process chart without water cleaning method of lightweight waste or used plastics of the present invention.
Fig. 6 be embodiment 1~7 sample anhydrous cleaning after cleaning rate variation diagram;
Fig. 7 be embodiment 1~7 sample anhydrous cleaning after shading rate variation diagram.
Wherein, 1 cleans device for solid dielectric, and 2 is pneumatic separator, 3 clean device for air dielectric, and 4 is sack cleaner, and 5 is elevator, 6 is blower fan, and 7 is tank body, and 8 is electronic break-in switch, 9 is relay, and 10 is charging aperture, and 11 is discharging opening, 12 is macropore filter, and 13 is aperture filter, and 14 is left air inlet, 15 is right baffle-plate, 16 is left air outlet, and 17 is left electric guard board, and 18 is right air inlet, 19 is right baffle plate, 20 is right air outlet, and 21 is right electric guard board, and 22 is exhaust outlet, 23 is pipeline, and 24 is varying speed switch.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
A kind of dry method purging system of waste or used plastics, this purging system includes:
Solid dielectric cleans device 1: the horizontal mixer that the present embodiment uses buncher to drive, as cleaning device, utilizes sandstone to be come off by waste or used plastics surface attachments, cleans waste or used plastics;
Pneumatic separator 2: be positioned at solid and clean device downstream, by conveyer belt, the waste or used plastics after sandstone and cleaning is sent into pneumatic separator 2, pneumatic separator includes sandstone outlet and plastic outlet, sandstone is discharged from sandstone outlet, it is back to solid dielectric by elevator 5 after recovered regeneration and cleans device 1, waste or used plastics after cleaning is discharged from plastic outlet, enters air dielectric by transmission band and cleans device 3;
Air dielectric cleans device 3: this device includes:
Tank body 7: this tank body top is provided with left air outlet 16, right air outlet 20 and charging aperture 10, left air outlet 16 and right air outlet 20 are respectively equipped with left electric guard board 17 and right electric guard board 21, left air outlet 16 and right air outlet 20 connect exhaust outlet 22, and be connected with described sack cleaner 4 by pipeline, charging aperture 10 is connected with pneumatic separator 2 by conveyer belt, the bottom of tank body 7 is provided with discharging opening 11, the both sides of tank body are provided with left air inlet 14 and right air inlet 18, left air inlet 14 and right air inlet 18 are respectively equipped with right baffle-plate 15 and right baffle plate 19, it is provided with filter between charging aperture 10 and discharging opening 11, the outside of filter is aperture filter 13, the inner side of filter is macropore filter 12;
Wherein, the expansion schematic diagram of macropore filter 12 and aperture filter 13 is distinguished the most as shown in Figure 3 and Figure 4, wherein, the aperture of macropore filter 12 is 2.0~3.0cm, the size of aperture filter 13 is 11~15 mesh, and the aperture of the macropore filter that the present embodiment uses is 2.5cm, and the size of aperture filter is 13 mesh.
Electronic break-in switch 8: including 1 import and 2 outlets, 2 outlets are equipped with valve, and 2 outlets are connected with left air inlet 14 and right air inlet 18 respectively by pipeline 14;
Blower fan 6: the import with electronic break-in switch 8 is connected, and is used for providing air dielectric;It is additionally provided with a varying speed switch 24 on blower fan 6, for regulating the power of blower fan 6, blows out the air dielectric of desired flow as required;
Relay 9: be used for controlling two outlet valves of electronic break-in switch 8 and left electric guard board 17 and the opening and closing of right electric guard board 21.
Its operation principle is as follows: relay 9 controls electronic break-in switch 8 timing within the working cycle and changes airflow direction, it is ensured that air-flow is successively entered tank body 7 by left air inlet 14 and right air inlet 18 within a working cycle respectively.When air-flow is entered tank body 7 by left air inlet 14, relay 9 controls left electric guard board 17 and cuts out, and relay 9 controls right electric guard board 21 and opens;In like manner, when air-flow is entered tank body 7 by right air inlet 18, relay 9 controls left electric guard board 17 and opens, and relay 9 controls right electric guard board 21 and cuts out;Tank body 7 two ends, equipped with aperture filter 13, do not allow plastic sheet to pass in and out, and the attachment granule come off can pass through.Tank body 7 is internal can make plastic sheet pass through equipped with multiple macropore filters 12, and plastic sheet certainly will collide and rub during shuttling back and forth between macropore filter 12, makes attachment come off.Left deep bead 15 and right deep bead 19 can be controlled without individually controlling by stream pressure.When air-flow is entered tank body 7 by left air inlet 14, left deep bead 15 is washed open by air-flow, and right deep bead 19 is issued to vertical closed mode at airflow function;When in like manner air-flow is entered by right air inlet 18, right deep bead 19 is opened, and left deep bead 18 is closed.
The dry method purging system of the waste or used plastics of the present invention, also include a sack cleaner 4, the exhaust outlet 22 that this sack cleaner 4 cleans in device 3 with air dielectric is connected, and carries out dedusting for air dielectric is cleaned device 3 expellant gas, then the gas after dedusting is entered air.
Above-mentioned purging system is used for the cleaning of waste or used plastics, and its flow process is as it is shown in figure 5, specifically include following step:
(1) use mud to bury method simulating pollution in 3 white clear plastics, under the conditions of 45-50 DEG C, dry 4h, afterwards dry waste or used plastics is broken for area and is about 4cm2Plastic sheet;
(2) taking 20g gained dry plastics sheet sample, utilize the materials cheap and easy to get such as sandstone, in solid dielectric cleans device, the sandstone respectively through 5 cleans;
(3) pneumatic separator, separating plastic sheet and sandstone medium will be passed through through the plastics that step (2) is cleaned, reclaim sandstone medium simultaneously;
(4) the plastic sheet conveyer belt after separating is sent to air dielectric and cleans in device, removes residual floating dust etc.;
(5) utilize sack cleaner that air dielectric is cleaned device expellant gas and carry out dedusting.Finally sample is taken out, the shading rate of sample after measuring the tablet quality before and after sample clean and cleaning.
Experimental technique parameter: Horizontal stirring owner tank diameter about 14cm, blade length is 5.8cm, and blender arranges rotating speed and is about 50r/min.Wind-force cleans the long 80cm of main tank, and macropore filter aperture is about 2.5cm, and used fan outlet wind speed is about 10m/s.Arrange relay circuit control the wooden unit working cycle be 1min, every 30s changes a wind direction.
Embodiment 2
Using purging system same as in Example 1 and cleaning method, difference is:
The time that the present embodiment waste or used plastics sandstone cleans is 10min.
Embodiment 3
Using purging system same as in Example 1 and cleaning method, difference is:
The time that the present embodiment waste or used plastics sandstone cleans is 15min.
Embodiment 4
Using purging system same as in Example 1 and cleaning method, difference is:
The time that the present embodiment waste or used plastics sandstone cleans is 20min.
Embodiment 5
Using purging system same as in Example 1 and cleaning method, difference is:
The time that the present embodiment waste or used plastics sandstone cleans is 30min.
Embodiment 6
Using purging system same as in Example 1 and cleaning method, difference is:
The time that the present embodiment waste or used plastics sandstone cleans is 40min.
Embodiment 7
Using purging system same as in Example 1 and cleaning method, difference is:
The time that the present embodiment waste or used plastics sandstone cleans is 50min.
Comparative example
Take waste and scrap same as in Example 1 as sample, add 300mL distilled water, be stirred cleaning 20min, and use distilled water to rinse 3 times, dry under the conditions of rear use 45-50 DEG C, the shading rate of sample after then measuring the tablet quality before and after sample clean and cleaning.
For determining the cleansing power cleaning device, definition cleaning rate and two parameters are for the evaluation of degree of cleaning.
Definition cleaning rate is the ratio with proper mass of poor quality before and after plastic sheet cleans, and its computing formula is:
δ=(m0-mx)/m0* 100%
Wherein m0For drying the gross mass of after stain plastics, unit is g;mxFor the plastic quality after cleaning, unit g.
Definition shading rate be under the conditions of same light source before and after shading intensity of illumination difference with without the ratio of intensity of illumination under dark conditions.Its computing formula:
ξ=(I0-Ix)/I0*100%
Wherein I0For the intensity of illumination under dark conditions, unit lux;IxFor the intensity of illumination after plastic sunscreen after cleaning, unit lux.
(1) scavenging period impact on cleaning performance: the anhydrous cleaning cleaning rate of 1-7 sample changes as shown in Figure 6, shading rate changes as shown in Figure 7.Being to tend to be steady for 10-50 minute at scavenging period, within 15 minutes, cleaning rate reaches more than 90%;And shading rate tends towards stability after 30min, and less than 45%.
(2) contrast dry cleaning process and conventional wet cleaning effect uniformity:
Understood the sample clean rate of anhydrous cleaning 40min and 50min by Fig. 6, Fig. 7 and averagely shading rate is all close with washing sample.Same kind is about 25.90% without the plastic sheet shading rate polluted.
Shading rate distribution aspect, washing sample ratio relatively decentralized, the sample then ratio that anhydrous cleaning obtains is more uniform, by calculate its shading rate standard deviation it can also be seen that, washing sample standard deviation and the coefficient of variation all big than anhydrous cleaning sample.Wash average cleaning effect approximation when anhydrous scavenging period is 40min-50min with tradition, and in anhydrous cleaning to the cleaning effect of plastic sheet evenly, the results are shown in Table 1.
Table 1 part anhydrous cleaning plastic sheet sample and washing sample contrast

Claims (10)

1. the dry method purging system of a waste or used plastics, it is characterised in that this purging system includes:
Solid dielectric cleans device: utilize sandstone to be come off by waste or used plastics surface attachments, cleans waste or used plastics;
Sorting unit: include sandstone outlet and plastic outlet, this sorting unit is positioned at described solid and cleans device downstream, Waste or used plastics after sandstone with cleaning separates;
Air dielectric cleans device: air dielectric cleans entrance the moulding by conveyer belt and described sorting unit of device Material outlet connects, for cleaning the floating dust on waste or used plastics surface;
Dust arrester: the exhaust outlet cleaning device with described air dielectric is connected, for cleaning device to air dielectric Expellant gas carries out dedusting.
The dry method purging system of a kind of waste or used plastics the most according to claim 1, it is characterised in that described Solid dielectric clean device be the horizontal mixer driven by buncher, the particle diameter of described sandstone is 4~14 mesh.
The dry method purging system of a kind of waste or used plastics the most according to claim 1, it is characterised in that described Sorting unit include the one in pneumatic separator or vibrating screen classifier.
The dry method purging system of a kind of waste or used plastics the most according to claim 1, it is characterised in that described Air dielectric clean device include:
Tank body: this tank body top is provided with left air outlet, right air outlet and charging aperture, described left air outlet and right air-out Mouth is connected with described dust arrester by pipeline, and described charging aperture is connected with described sorting unit by conveyer belt, tank The bottom of body is provided with discharging opening, and the both sides of tank body are provided with left air inlet and right air inlet, in described charging aperture and discharging Being provided with the filter being arranged in order between Kou, the two ends of described filter are aperture filter, are provided with between described aperture filter Macropore filter;
Electronic break-in switchs: including 1 import and 2 outlets, 2 outlets are equipped with valve, and 2 outlets It is connected with left air inlet and the right air inlet of described tank body respectively by pipeline;
Blower fan: the import with described electronic break-in switch is connected, and is used for providing air dielectric;
Relay: switch the opening and closing of 2 outlets for controlling electronic break-in.
The dry method purging system of a kind of waste or used plastics the most according to claim 4, it is characterised in that described The left air inlet of tank body and right air inlet are equipped with deep bead, and described deep bead upper end is connected through the hinge with tank body, Deep bead lower end is rotatable.
The dry method purging system of a kind of waste or used plastics the most according to claim 4, it is characterised in that described The left air outlet of tank body is provided with left electric gear aerofoil, and right air outlet is provided with right electric gear aerofoil, described left electric wind screen Plate and right electric gear aerofoil are by described Control opening and closing.
The dry method purging system of a kind of waste or used plastics the most according to claim 4, it is characterised in that described The mesh size of aperture filter is 11~15 mesh, and macropore diameter is 2.0~3.0cm.
The dry method purging system of a kind of waste or used plastics the most according to claim 4, it is characterised in that described Dust arrester includes the one in sack cleaner, electric cleaner or gravitational precipitator.
9. use a cleaning method for the waste or used plastics of the arbitrary described purging system of claim 1~8, its feature Being, the method includes following step:
(1) by waste or used plastics oven drying at low temperature, and it is broken into 3~8cm2The fragment of size;
(2) step (1) gained fragment is placed in solid dielectric clean in device, utilizes sandstone to be carried out, its In, it is 40~60r/min that solid dielectric cleans the rotating speed of device, and scavenging period is 5~50min;
(3) after cleaning, fragment and sandstone transmit to sorting unit, by fragment after sandstone and cleaning separately;
(4) fragment after cleaning is delivered to air dielectric and cleans device, by Control air dielectric at tank body Inside move reciprocatingly, remove the floating dust of fragment surface after cleaning, obtain waste or used plastics product and tail gas;
(5) tail gas is entered in dust arrester, discharge after removing floating dust.
The cleaning method of a kind of waste or used plastics the most according to claim 8, it is characterised in that step (1) The temperature of described waste or used plastics oven drying at low temperature is 45~50 DEG C, and the time is 3~5h;
Step (4) described air dielectric reciprocal cycle is 40~80s.
CN201610187736.3A 2016-03-29 2016-03-29 The dry method purging system and method for a kind of waste or used plastics Expired - Fee Related CN105835262B (en)

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Cited By (6)

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CN107139354A (en) * 2017-06-07 2017-09-08 中国科学院生态环境研究中心 A kind of method using gas-solid fluidized bed dry clean waste or used plastics
CN107960905A (en) * 2016-10-20 2018-04-27 佛山市顺德区美的电热电器制造有限公司 Material dry-cleaning apparatus and its control method, kitchen storage tool and cooking apparatus
CN108080346A (en) * 2017-12-18 2018-05-29 长沙深湘通用机器有限公司 A kind of cleaning
CN108620226A (en) * 2018-04-21 2018-10-09 临沂清宇环境资源综合利用研究院有限公司 A kind of house refuse cleans the device of the weights such as sorting sandstone
CN108688021A (en) * 2018-06-13 2018-10-23 郑州格力绿色再生资源有限公司 Waste plastic removing glue process system
CN111571862A (en) * 2020-05-20 2020-08-25 北京建筑大学 Dry cleaning equipment and method for waste plastics in household garbage

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