CN1158783A

CN1158783A - Resin material recovered from industrial wastes of plastic film, method and apparatus for recovering resin material from industrial wastes of plastic film

Info

Publication number: CN1158783A
Application number: CN96103912A
Authority: CN
Inventors: 西堀贞夫
Original assignee: EIN Engineering Co Ltd
Current assignee: Xinye Corp
Priority date: 1996-03-05
Filing date: 1996-03-05
Publication date: 1997-09-10
Anticipated expiration: 2016-03-05
Also published as: CN1080629C

Abstract

A resin material is recovered for recycling from indsutrial waste of plastic film, unlike conventional methods, without requiring washing and drying the steps for removing foreign objects adhering thereto such as agricultural chemicals. A method for recovering a resin material from industrial waste film according to the invention comprises the steps of crushing waste film into crushed small pieces to be treated, applying a scraping impact force to the crushed small pieces to remove any adherent foreign objects and separate them from each other. Then, the separated crushed small pieces are size-regulated and for regeneration.

Description

The resin material and recovery method and the equipment that reclaim from the trade waste of plastic sheeting

The present invention relates to reclaim resin material and recovery method and equipment by the trade waste of molded resin product.

More particularly, the present invention is applicable to processing plastic film or sheet material discarded object, they can be thin as film, also comparable its thick (hereinafter all being called plastics " film "), they are used for agricultural and other industrial circles, provide resin material with following step, sensu lato useless film is ground into many pending small pieces, separates then and remove rainwater, dew, earth, dust, sand, salt, grass roots, metallic particles, glass fragment, rubbish, agricultural chemicals, agricultural crops fragment (leaf, stem) and attached to the exotic on the film.The present invention also provides a kind of method and apparatus, and it is by classifying the resin material that reclaims by size, and collects the material in the predetermined magnitude range, so that make them be suitable for being directly formed to any product or form particle, regenerates as the resin material raw material.

The trade waste source of plastic sheeting comprises the agricultural plastic film that for example is used for culturing vegetable, flower, paddy rice and other crops in a large number.More particularly, plastic sheeting is used for breeding booth, forcing tunnels, greenhouse, rice breeding field, polyvinyl chloride booth field and rice field and other agriculture application scenarios.Other sources of plastic sheeting trade waste comprise tobacco seedling, Tobacco drying booth and cattle breeding room and raw material and chemicals packaging bag etc.

Above-mentioned plastic sheeting comprises the thermoplastic film (in this manual, these plastic sheetings that are used for agricultural are generically and collectively referred to as " agricultural plastic film discarded object ") that is made by polyethylene, polyvinyl acetate, polyolefin, polypropylene, polyvinyl alcohol and polyvinyl chloride.In Japan, scrapped 193170 tons of agricultural plastic film discarded objects of total amount in 1993, wherein 69.4% from vegetables with disposable film, 5.2% from flowers with disposable film, 7.0% from fruit with disposable film, 10.1% from field or vegetables with disposable film, 4.2% from rice terrace with disposable film and 4.0% from other sources.

Plastic sheeting trade waste in the molded resin product discarded object, particularly, particularly contain at 20～40% plasticizer of Japan's use such as the flexible PVC of dioctyl phthalate (DOP) and dioctyl adipate (DOA) and made dirty by earth, dust, sand, regulus, glass fragment and rubbish by polyethylene (PE), Merlon (PC) and polyvinyl chloride (PVC).Under the situation of agricultural wastes plastic sheeting, because crop fragment (leaf, stem) adheres on it, can make their rapid devitrifications, discarded object is constantly increased.The discarded object of such plastic sheeting is collected usually to be changed and discardedly simply is used for land and buries or incinerate.In some cases, they remove attachment through washing, and dry and pulverize or utilize as material source.

In 1993, in the 193170 tons of polyvinyl chloride and poly agricultural plastic film discarded object that Japan is discarded, 25.9% processed being used to recycled, and 20.9% is buried, and 43% quilt incineration and 10.2% is simply discarded.The private incineration accounts for 65.8% of polyethylene film.By classification, polyvinyl chloride and polyethylene film account for 54.8% and 40.5% respectively, and remaining is other plastic sheetings in the remainder of agricultural discarded object.

Industrial plastic film discarded object is water-fast and harsh weather, and is difficult for weathering.On the other hand, when burning, they can produce harmful gas and smog, with ever-increasing speed environment are caused harmful effect.What is worse, they are used to the meeting fusion in burning, and are adhered on the furnace wall of incinerator, and incinerator is caused damage.If they are buried to avoid these shortcomings, they can be long-term remaining and not corrupt so, therefore also can produce harmful effect to environment.

Simultaneously, it is believed that, plastic material be tending towards day by day exhausted as natural resources, so utilizing again of plastic refuse and discarded be lasting society need, also be the needs of industrial quarters.

Traditionally, the trade waste of plastic sheeting washes with water, to remove attachment, so that they are utilized again, but the operation that washes with water like this comprises washing step and drying steps, the former consumes a large amount of water, washing facility that such action need is large-scale and drying equipment, the water resource of their consume valuable and the energy.

Particularly, the agricultural discarded object of plastic sheeting has agricultural chemicals usually, if they wash with water, must handle with the water of crossing, to remove agricultural chemicals with which, so that avoid causing river and phreatic pollution.Obviously, such processing needs main equipment, is expensive therefore.Therefore, the agricultural discarded object of nearly all plastic sheeting still goes out of use so far, and is not used as secondary resource.

In view of above-mentioned these problems, obtain treating the resin material that utilizes again so an object of the present invention is to provide resin material that the following step of a kind of usefulness effectively reclaims from the trade waste of plastic sheeting: separate and remove chemicals, earth, dust, sand, metallic particles, crops fragment (leaf, stem), glass fragment and other being attached to exotic on the film, these plastic sheets are pressed predetermined magnitude range classification, and make particle, and provide a kind of method and apparatus that is used for reclaiming resin material from trade waste by them.

According to the present invention, above-mentioned purpose of the present invention and some other purpose reach by trade waste (hereinafter referred is " useless film ") the recovery resin material of following steps by plastic sheeting: the film that will give up is ground into many pending small pieces, the impact power of grinding is applied on the single small pieces so that resin material is separated with attachment, and the size of adjusting resin material is made raw material.

According to the present invention, a kind of method from discarded film recovery resin material also is provided, it may further comprise the steps:

Useless film is ground into pending many small pieces; And

The impact power of grinding is applied on the single pending small pieces of pulverizing, resin is separated with attachment, and adjust the size of resinous wood tablet.

According to a further aspect in the invention, the step of the discarded film of above-mentioned pulverizing is undertaken by the step that film is ground into coarse fragments of will giving up of at least one step.

According to a further aspect in the invention, provide a kind of equipment from useless film recovery resin material, it comprises:

Disintegrating apparatus is used for useless film is ground into many pending small pieces;

Fixation side separation, classification and whole grain equipment, it is installed on the fixed disk of the central opening that links to each other with charging aperture, and steady pin is housed on the circular trace of many rotations successively;

Movable side separation, classification and whole grain equipment, it is installed on the movable plate that rotates with respect to described fixed disk, is equipped with movable pin successively on many rotational trajectories different with described steady pin;

Classifying equipoment, it be installed in the steady pin of combination and movable pin around, link to each other with discharge port, so that freely draw off the isolated size attachment littler than given size; And

Be used to collect size than collecting mouthful collecting device of the resinous wood tablet of the recovery that the size of regulation is big;

In order to following method the resinous wood tablet is separated with attachment: in separation, classification and whole grain equipment, grind power, make it separation, classification and whole grain by between every pair of steady pin and movable pin, applying impact to them.

According to the present invention, the equipment that reclaims resin material from useless film also can have coarse crushing equipment, and it is installed in the upstream of described disintegrating apparatus, is used for the pending useless film of coarse crushing.

According to the present invention, the equipment that reclaims resin material from useless film preferably has collects the pipeline that mouth is connected with described charging aperture with described, can turn back to described charging aperture so that make at collection mouthful described small pieces that are used to handle of collecting.

By of the present invention, the equipment that from useless film, reclaims resin material that said structure is arranged, useless film becomes thick sheet with the coarse crushing of described coarse crushing equipment, further be ground into pending small pieces with described disintegrating apparatus then, it then one or many send into separation, the charging aperture of classification and whole grain equipment, make them be ground into small pieces, between every pair of steady pin and movable pin, grind and whole grain, grade into uniform size and whole grain, sub-elect the attachment of size simultaneously less than required size, and from the discharge port discharge, from collecting the resin material of mouthful collection size greater than required size.

It is fairly obvious that objects and advantages of the present invention will become from following detailed description of preferred embodiments and accompanying drawing, and institute's drawings attached same numbers is represented identical parts, wherein:

Fig. 1 is the schematic diagram of one embodiment from the method for useless film recovery resin material, and it illustrates the procedure of processing that relates in basic design of the present invention and the embodiment;

Fig. 2 is the perspective view of the chopping grinder that can be used for embodiment of the present invention (pulverizing and whole grain equipment);

Fig. 3 can be used for the grinding of embodiment of the present invention and the longitudinal sectional drawing of whole grain equipment;

Fig. 4 is the front view of Fig. 3 equipment, is used for explanation grinding and whole grain operation;

Fig. 5 is the coarse crushing step of the inventive method and the schematic diagram of pulverising step; And

Fig. 6 is the schematic diagram of the present invention's separation from the method for useless film recovery resin material, classification and whole grain step.

The waste resin material that the method and apparatus of process resin material is pending:

The moulding resin discarded object that available this method is handled comprises the useless film of polyethylene, polyvinyl chloride (soft) and other plastic materials.Useless diaphragm is made dirty by earth, dust, sand, metal fragment, glass fragment, crop fragment (leaf, stem) and other exotics that adheres to.Though in some cases when collecting useless film with gatherer, they are rolled smoothly, but great majority are form collections of can't bear with gauffer.

Now, illustrate that the useless film that can't bear from such gauffer reclaims the method for the resin material of polyethylene and other plastic components.

Processing method:

As shown in Figure 1, processing method comprises steps such as coarse crushing, pulverizing and separation, classification and whole grain.

Step 1: coarse crushing step

With mainly shredding by Fig. 1 or being ground into small pieces from the useless film of the fold polyethylene of agricultural booth, obtain coarse fragments 81, it is on average less than 15 * 50 millimeters, and preferably less than 30 * 30 millimeters, its apparent density is between 0.19～0.23.

Coarse crushing equipment

The coarse crushing equipment film that will give up is crushed to the sheet of appropriate size, and for the present embodiment, it is called " pulverizer ".

Fig. 1 illustrates a pulverizer.Pulverizer 110 has a pulverizer main body, it has the import of useless film, parallel installation a pair of each other inwardly the rotating shaft of rotation, many rotation ribs of installing are at regular intervals arranged on each, the claw type rib is installed around rotating shaft, make each rotation rib and three corresponding claw type rib engagements with this mode, the claw type rib is installed along rotation rib outer peripheral face isogonism, and stretches to the rotation rib, so that the useless film of fold is pulverized and is chopped into the sheet of suitable size.

To send into pulverizer by the charging aperture on top from the waste polyethylene film of the fold of agricultural booth, the rotating shaft that is inwardly rotated is caught then, and continue useless film is applied shearing force and compression stress by intermeshing rotation rib periphery, film is pulverized and chopping, obtain coarse fragments 81.The coarse fragments 81 that obtains is discharged from the discharge port of the rotation rib below of two rotating shafts.In this operating procedure, coarse fragments is dark-coloured, because they are made dirty by agricultural chemicals, earth and other attachments.

Should be understood that, coarse crushing equipment not necessarily is limited to the pulverizer that said structure is arranged, available Horai Co., Ltd, guy-knacks pulverizer, Nara Machine Manufactur-ing Co., the roller pulverizer of Ltd, single shredding machine, dissimilar shredding machine or pulverizer etc.

In Fig. 5, a pair of such pulverizer 110 is installed up and down, constitutes two sections coarse crushing equipment.Last pulverizer 210a level is installed, and axle and the inclination at 45 of the trunnion axis of last pulverizer of following pulverizer 210b.Use this arrangement, can significantly improve the working ability that reclaims the resin material assembly.

Preferably, loose machine 211 is installed in the below of pulverizer 110 casees, so that make the useless film or the coarse fragments 81 of the pulverizing that falls from pulverizer 110 loose, makes it to be easy to remove any cobble and the sand grains that may find in useless film.Screen conveyor 212 is installed in the below of loose machine 211, and from the horizontal by about 45 ° of oblique angles, so that sieve removes cobble and sand grains, they can freely fall by the mesh of conveyer.Preferably, magnetic separation device 213 is installed in the front end of screen conveyor 212, so that sub-elect the sheet metal and the rust iron particle that may be contained in the coarse fragments 81.If desired, can coarse fragments 81 be separated with the rust abrasive grit with sheet metal by a wire netting rotary screen 215, so that sub-elect thin cobble, sand grains and the metallic particles that may in coarse fragments 81, exist.

Step 2: pulverising step

Be that the disintegrating apparatus shown in coarse fragments 81 usefulness Fig. 1 and 2 of 15 * 50 millimeters further is crushed to usually little pulverizing small pieces 82 to 2 * 15 millimeters or 10 * 10 millimeters from the particle mean size of step 1 coarse crushing step, or every limit is not more than irregular each limit shape of 10 millimeters.Should be pointed out that in this operating procedure as the coarse fragments 81 that is made by step 1 (coarse crushing step), fragment has agricultural chemicals, earth and other attachments.

Disintegrating apparatus

Disintegrating apparatus is with coarse fragments 81 choppings and be ground into littler sheet 82 so that further handle.For this embodiment, for convenience's sake, it is called " chopping grinder ".

Fig. 2 illustrates the chopping grinder 120 that can be used as disintegrating apparatus.

121 expression chopping grinder main bodys, it is in having the cylindrical housings of upper shed, and it covers the import 123 of sending into coarse fragments 81 with lid 122 cappings of closing freely, and from then on coarse fragments 81 sends into chopping grinder main body.

Chopping grinder main body 121 has shredding machine support 124, the rotational driving device (not shown) of installing by chopping grinder main body 121 bottoms horizontally rotates it, the long rotation rib 125 that three above-below directions are arranged along the periphery of shredding machine support 124, adjacent rotation rib is separated into 120 ° of isogonisms and installs, and the rib point of three rotation ribs 125 is on the same rotational trajectory.A pair of fixing rib 126 is fixed on the chopping grinder main body 121, and by installing like this: they are installed with respect to the rotational trajectory symmetry of rotation rib 125, and leave the rotational trajectory of rotation rib 25 slightly, with apply two fixedly rib 126, shredding machine support 124 and rotation rib 125 inside that will shred grinder main body 121 be divided into feed space 127 and pulverizing chamber 128.The charging aperture of lid 122 links to each other with feed space 127.Two fixedly rib 126 and the slit of rotation between the rib 125 can regulate like this so that coarse fragments can be shredded required size or further pulverize.Slit in this embodiment is between 2 and 0.3 millimeters.Pulverizing chamber is used in two fixedly between the rib 126, around screen cloth 129 separations of the rotational trajectory that rotates rib 125.The screen cloth of the screen cloth 129 of this embodiment for 10 millimeters the small pieces on limit of having an appointment are passed through.Chopping grinder main body 121 also is equipped with discharge port, small pieces 82 dischargings that are used to pulverize below pulverizing chamber 128.

Use has the chopping grinder 120 of said structure, will be from step 1 coarse crushing step pulverizer 110, the coarse fragments 81 that is of a size of 15 * 15 millimeters is sent into grinder by covering 122 charging aperture 123, and by the rotation rib 125 of the shredding machine support 124 that drives with the rotational driving device (not shown) and fixedly rib 126 be chopped into littler sheet, the small pieces of pulverizing 82 are not more than 2 * 15 millimeters or 10 * 10 millimeters or irregular polygonal are arranged, arbitrary limit is not more than 10 millimeters (though their shape and surface area can not specifically be determined), and delivers to next step by the discharge port discharging.

Notice that chopping equipment is not limited to shred the hard pulverizer of grinder and Horai company, wherein rotate the rotating shaft level of rib 125 and install, and two fixedly the screen cloth between the rib 126 129 in lower position.It shall yet further be noted that in this operating procedure though some agricultural chemicals, earth and other attachments of coarse fragments 81 bands are removed, the small pieces of pulverizing 82 are opaque and dark-coloured.

If necessary, available air blast 159 is sent the small pieces of pulverizing 82 into cylindrical container 220, is stored in wherein in the past in that they are sent into next step always.

Step 3: separation, classification and whole grain step

The power of grinding is hit to be not more than 10 millimeters the small pieces 82 (these small pieces are made dirty by agricultural chemicals, earth, dust, sand, metal fragment, crop fragment (leaf, stem) and glass fragment and rubbish) of pulverizing of irregular polygonal waste polyethylene film from the every limit of having of step 2 pulverising step then, and further be ground into irregular polygonal particle that the limit is not more than 1～2 millimeter, be a granulated into the cube of every limit between 1～10 millimeter (preferred 2～5 millimeters) then, cylinder or any irregularly shaped, the material through granulation grinds and whole grain then.Simultaneously, the exotic that will be attached to the small pieces 82 of pulverizing with impact grinding power is removed from polyethylene, consequently reclaims polyethylene and other resinous substances as resin material from useless film.

Above-mentioned steps can repeat for several times when needing.

Separation, classification and whole grain equipment

As mentioned above, the small pieces 82 of the pulverizing of polyethylene useless film, soft PVC film and other materials are ground into tiny with separation, classification and whole grain equipment, and grinding and whole grain.Simultaneously, impact grinding power is applied on the small pieces 82 of pulverizing, the exotic on making it and adhering to it separates, and with small pieces 82 granulations of pulverizing.For this embodiment, it is called " separator ".

Referring to Fig. 3 and 4, separator 130 includes the fixed disk 131 of the central opening that is connected with the charging aperture 132 of the small pieces 82 of sending pulverizing to, with the fixed disk 131 face-to-face fixed charge method end plates of installing 133, grinding/whole grain space 155 is arranged betwixt, and described fixed disk 131 and described fixed charge method end plate 133 are fixed to cycle side plate 135 each periphery.The movable plate 141 that drives its rotation with rotation transverse axis 142 places grinding/whole grain space 155, has bearing 143 on the rotation transverse axis 142.Drive described rotation transverse axis 142 rotations with rotational driving device (not shown) such as motor.

Many concentric circles rotational trajectories " a " that steady pin 134 is installed in fixed disk 131 (with respect to movable plate 141) (Fig. 4) on, and movable pin 144 is installed on many concentric circular tracks " b " of movable plate 141, track b is concentric but a displacement is arranged with track a, so that steady pin 134 and movable pin 144 are interdigital and arrange, thereby impact grinding power is put on the small pieces 82 of pulverizing, make that these sheets 82 are further pulverized, grinding and whole grain.Separator 130 also comprises the screen cloth of certain mesh that a perforation with required diameter forms, and it is installed between the periphery and peripheral plate 135 of movable plate 141, forms between peripheral plate 135 and screen cloth 151 and unloads material space 156.Discharge port 152 is unloading below the material space 156.As shown in Figure 1, air blast 157 links to each other with the discharge port 152 of separator 130.Though the screen cloth 151 of this embodiment is 1 millimeter mesh screen cloth, usually preferably less than 0.7 millimeter sieve mesh.

Collect mouthfuls 153 screen clothes 151 times that are installed in grindings/whole grain space 155, the plug valve 154 that the on/off operation of mouth 153 is collected in control is housed.As shown in Figure 1, air blast 158 is installed near collecting mouthful 153 places, deflates from separator 130, is connected with charging aperture 132 by air blast 158.

Therefore, for the separator 130 that said structure is arranged, when driving rotation transverse axis 142, the driving arrangement (not shown) makes movable plate 141 rotations, and when the small pieces of pulverizing 82 are sent into charging aperture 132, the small pieces of pulverizing 82 are grinding between steady pin and movable pin 134,144/the abrasive power effect that is hit of whole grain 155 centers, space, and pulverize or grind/whole grain, also be subjected to centrifugal action, reach in the process of periphery at them, pulverized gradually and whole grain.In this course, attached to the exotic 84 on the polyethylene film small pieces of pulverizing 82 as agricultural chemicals, earth, dust, sand, metal fragment, crop fragment (leaf, stem) be crushed to every limit less than 1 millimeter small pieces (though its shape and surface area can not specifically be determined, cube is pulverized and be a granulated into to the resin material 13 of polyethylene film simultaneously, cylindrical or any irregularly shaped, 1 millimeter of its diameter, long 10 millimeters, 2～5 millimeters on preferred every limit, ground and whole grain through the material of granulation then, they are collected as the resin material of the particle of regular size earlier after drying simultaneously.The resin material small pieces 82 of some pulverizing may be pulverized becomes the particle powder that every limit is not more than 1 millimeter, though its shape and surface area can not specifically be determined.

As shown in Figure 6, a pair of similar separator 130 (230a, 230b) can be installed side by side, with shared drive power source, the small pieces of pulverizing 82 are sent into by charging

aperture

132a, 132b, have oscillating feeder 233a, the 233b of

independent hopper

231a, 231b to be installed in the top of charging

aperture

132a, 132b respectively.

The centrifugal action that the polyethylene film small pieces 82 that an attachment of pulverizing 84 and a part are pulverized are borrowed movable pin 144 is by screen cloth 151 and classification in unloading material space 156, and they are discharged by discharge port 152 and air blast 157 then.

Simultaneously, the topped resin material of mainly being made up of polyethylene film and big attachment 83 that has can not be stayed on the screen cloth 151 by screen cloth 151 through the particle of grinding and whole grain.But, because collecting mouth 153 and charging aperture 132 is connected with each other by air blast 158, when plug valve 154 is opened, collect the whole grain particle of mouthful 153 resin materials of collecting 83 and can not be returned charging aperture 132 by the bigger attachment 84 of screen cloth 151, after bigger attachment earth, glass, metal and other materials are pulverized, discharge by discharge port 152.On the other hand, the main resin material particle of being made up of polyethylene film of recovery returns charging aperture 132, and they do not grind and the thin degree that arrives by screen cloth 151 of whole grain, so major part is stayed on the screen cloth 151.

Whole particle of the resin that reclaims opened through collecting mouthful 153 collections by plug valve 154.

The charging pneumatic plant that air blast 158 can be admitted to the grinding/whole grain space 155 of separator 130 replaces or combination with it, fixed charge method end plate 133 or collection mouthful 153 pipelines that link to each other with charging aperture 132 are connected, and can not can turn back to charging aperture 132 by the bigger attachment of screen cloth 151 so that make.

As shown in Figure 6, the pipeline 236 that links to each other with the compressed air source (not shown) links to each other with tube connector 235, and the collection mouth is linked to each other with charging aperture 132a, 132b.Adjust the bonding pad that plate can be positioned on pipeline 236,, make compressed air mainly flow to charging aperture 132 with such method control operation.Tube connector 235 is received on the arm, and the one end is near charging

aperture

132a, 132b, and arm 237 links to each other with collecting tank 249, so that reclaim the whole grain particle of resin material.Three-way magnetic valve 238 can be positioned on arm 237 junction, by the timing circuit periodic switch, closes the tube connector 235 of downstream and opens arm 237, the resin material of staying on the screen cloth 151 can be taken out, and collect by arm 237.On the other hand, arm 237 and tube connector 235 can be equipped with independent magnetic valve, so that they can alternately open and close.

The resin material 83 that reclaims almost is transparent or translucent, colourless or adularescent slightly.In Fig. 6, the collecting tank of sand, dust, agricultural chemicals, fertilizer etc. is collected and is stored in reference number 250 expressions.The pipe that often links to each other with discharge port 152 by air blast 157 links to each other.

Have in the experiment of above-mentioned embodiment of separator 130 in use, the small pieces 82 that 600 grams are pulverized sent into separator 130, and drive movable plate 141 under 40 hertz with 1900 rev/mins speed rotation.The small pieces 82 that 90% (weight) is pulverized were a granulated into diameter or width less than 1.2 millimeters in 2 minutes, 3～7 millimeters of length cylindrical basically, and all the other 10% are the attachment pulverized and the polyethylene film resin material of efflorescence.Therefore, this embodiment reclaims the resin material of most of useless film at short notice.Large-scale separator 130 can be installed, to improve the working ability of this embodiment.

For movable plate (141), become too little particle in order not make polyethylene film, preferred low relatively rotary speed.In fact, the speed of rotation of movable plate 141 can make useless film granulation of polyethylene and whole grain low as much as possible in greater than the limited field of the sieve mesh of screen cloth 151 to size, so that will be attached to exotic such as agricultural chemicals, earth, dust, sand, metal fragment on the small pieces 82 of pulverizing, crop fragment (leaf, stem) will separate with rubbish with glass fragment and send charging aperture 132 back to from collecting mouthfuls 153, and with impact grinding power they will be ground into fine grained once more by air blast 158.For example, can drive movable plate 141 rotates with 1200 rev/mins speed.

Describe though above-mentioned embodiment is example with the polyethylene film, the form that other resin materials such as polyvinyl chloride and Merlon also can whole grain particles reclaims.

The step 1 of said method and 2 commutative or steps 2 can be saved, decide on the situation of the useless film of processing, as whether need to roll, how to roll, pollution level etc.

The resin material particle that the present invention reclaims can directly enter mould machine, perhaps sends into the former first granulation of mould machine extrusion molding, compression moulding or injection moulding.Perhaps, the resin material that reclaims can be mixed and mediates granulation before it sends into mould machine with new resin material.Decide on the application scenario, the filler that contains one or more pigment can be added to granulation in the resin material of recovery.In order to produce layered product, but coarse fragments fibre-bearing element, as synthetic wood product (EP5516513B1 grants applicant, the proprietary method of description).

As mentioned above, according to the present invention, provide and passed through following steps, with the resin material of simple relatively method from the trade waste recovery of plastic sheeting, with impact grinding power separating foreign objects such as agricultural chemicals, earth, dust, sand, metal fragment, crop fragment (leaf, stem) and glass fragment and rubbish simply from the useless film of resin material, so that the resin material granulation effectively of reclaiming obtains the required size that is used for utilizing again.A kind of method and apparatus that is used for reclaiming from industrial waste such resin material also is provided.

Different with any comparable conventional method, therefore method of the present invention can save precious water resource and fuel source without any need for large-scale washing facility and drying equipment.

In addition, because it can not cause river and underground water pollution, do not need pretty troublesome method of wastewater treatment.

Therefore, topmost authority requires not relate to the machine of specializing in concrete mode.And described main authority requires to be intended to protect the core and the marrow of this breakthrough invention.

The present invention obviously is new for useful.And, for common those skilled in the art, it seems by background technology, as one on the whole, be not conspicuous making the present invention at that time.

And in view of the revolutionary content of the present invention, obviously it is initiative invention.Therefore, authority requires to give very wide explanation, so that by protecting core of the present invention by law.

Therefore can find out, above-mentioned purpose and supported effectively by the purpose that above-mentioned explanation obtains obviously, because under the situation of scope of the present invention, making some change, the all the elements that comprise in the above description or in the accompanying drawings shown in content all use and explain, rather than as restriction.

It is also understood that following claim is intended to relate to general features of the present invention and the concrete feature of describing here, and all the elements of the scope of the invention, they all should be in this scope.

81 ... coarse fragments 82 ... fractionlet 83 to be processed ... the resin material 84 that reclaims ... attachment 120 ... chopping grinder 121 ... chopping grinder main body 122 ... lid 123 ... import 124 ... cut tool support 125 ... rotation rib 126 ... fixedly rib 127 ... feed space 128 ... pulverizing chamber 129 ... screen cloth 130 ... grind-the whole inferior unit of grain (separator) 131 ... fixed disk 132,132a, 132b ... charging aperture 133 ... fixed charge method end plate 134 ... steady pin 135 ... cycle side plate 141 ... movable plate 142 ... rotation transverse axis 143 ... bearing 144 ... movable pin 151 ... screen cloth 152 ... discharge port 153 ... collect mouth 154 ... piston valve 155 ... grind-whole grain space 156 ... unload material space 157,158 ...

air blast

210a, 210b ... pulverizer 212 ... screen conveyor 213 ... magnetic clasfficiator 215 ... rotary valve 22 ...

basin

230a, 230b ...

separator

231a, 231b ... hopper 233a, 233b ... oscillating feeder 235 ... tube connector 236 ... pipeline 237 ... arm 238 ... three-way magnetic valve 240 ... recycling can 250 ... collecting tank

Claims

One kind with following step by isolate the resin material that the exotic that adheres on it reclaims from the plastic sheeting trade waste: the film that will give up is ground into many pending small pieces; Impact grinding power is applied on the small pieces of single pulverizing, the resin material small pieces are separated with attachment; And the size of the resin material small pieces of adjustment pulverizing.
2. one kind is reclaimed the method for resin material by isolating attached to last exotic from the plastic sheeting trade waste, and this method may further comprise the steps at least:

Useless film is ground into the small pieces of many pending pulverizing; And

Impact grinding power is imposed on the small pieces of single pulverizing, resin material is separated with attachment, and adjust the size of the resin material small pieces of pulverizing.
3. one kind is reclaimed the method for resin material by isolating attached to last exotic from the plastic sheeting trade waste, and this method may further comprise the steps at least:

The film coarse crushing of will giving up becomes many coarse fragments;

Coarse fragments is ground into the pending small pieces of pulverizing; And

Impact grinding power is applied on the small pieces of single pulverizing, resin material is separated with attachment, and adjust the size of the resin material small pieces of pulverizing, remove isolated attachment simultaneously on demand.
4. reclaim the method for resin material according to claim 2 from the plastic sheeting trade waste, it is characterized in that, apply impact grinding power for the small pieces of single pulverizing and resin material is separated and the step of size of adjusting the resin material small pieces of pulverizing repeats several times in order with attachment.
5. one kind is reclaimed the equipment of resin material by isolating attached to last exotic from the plastic sheeting trade waste, and it comprises:

Disintegrating apparatus is used for useless film is ground into the small pieces of many pending pulverizing;

Fixation side separation, classification and whole grain equipment, it is installed on the fixed disk of the central opening that links to each other with charging aperture, and steady pin is housed on the circular trace of many rotations successively;

Movable side separation, classification and whole grain equipment, it is installed on the movable plate that rotates with respect to described fixed disk, is equipped with the movable pin different with described steady pin on many rotational trajectories successively;

Classifying equipoment, it be installed in the steady pin of combination and movable pin around, link to each other with discharge port, so that freely draw off isolated attachment; And

Collecting device is used to collect size than collecting mouthful big recovery resinous wood tablet of given size; And

With following step the resinous wood tablet is separated with attachment: between every pair of steady pin and movable pin, apply impact grinding power, classification and whole grain in separation, classification and whole grain equipment to them.
6. one kind is reclaimed the equipment of resin material by isolating attached to last exotic from the plastic sheeting trade waste, and it comprises:

Coarse crushing equipment is used for useless film coarse crushing is become many coarse fragments;

Disintegrating apparatus is used for coarse fragments is ground into the pending small pieces of pulverizing;

Fixation side is ground and whole grain equipment, and it is installed on the fixed disk of the central opening that links to each other with charging aperture, and steady pin is housed on the circular trace of many rotations successively;

Movable side is ground and whole grain equipment, and it is installed on the movable plate that rotates with respect to described fixed disk, is equipped with movable pin successively on many rotational trajectories different with described steady pin;

Classifying equipoment, it be installed in the steady pin of combination and movable pin around, link to each other with discharge port so that freely draw off isolated size attachment and the collecting device littler than given size, the size that is used to collect recovery greater than the resinous wood tablet of collecting the inlet given size and

Separation, classification and whole grain equipment are used for applying impact grinding power to coarse fragments between every pair of described steady pin and movable pin, and the resinous wood tablet is separated and classification with attachment, and resin material are ground and whole grain.
7. reclaim the equipment of resin material according to claim 5 from the plastic sheeting trade waste, it is characterized in that, described collection mouthful and described charging aperture are connected with each other, so that can turn back to described charging aperture in described separation, classification and whole the equipment collecting mouthful small pieces of the pending described pulverizing of collecting.
8. reclaim the equipment of resin material according to claim 6 from the plastic sheeting trade waste, it is characterized in that, described coarse crushing equipment comprises the pulverizer that a pair of above-below direction is installed, so that the axle of going up pulverizer is level and installs, and the axle of pulverizer 45 ° of the axle inclinations of going up pulverizer relatively down.
9. reclaim the equipment of resin material according to claim 7 from the plastic sheeting discarded object, wherein a pipeline is installed to and connects described collection mouth one side of collecting the pipeline of mouth and the described charging aperture that communicates with compressed air source, and an arm is installed, make this pipe in charging oral-lateral branch, and communicate with the batch can of collecting whole grainy resin material, three-way magnetic valve is positioned on the junction of arm.
10. according to the equipment from plastic sheeting trade waste recovery resin material of claim 9, wherein flow to adjustment equipment and be installed in charging compressed air to the tube connector of charging aperture.
11. according to the equipment from plastic sheeting trade waste recovery resin material of claim 9, wherein loose machine is used to make the useless film of coarse crushing loose below being installed in described pulverizing cabinet, and screen conveyor is installed in the machine below of loosening.
12. according to the equipment from plastic sheeting trade waste recovery resin material of claim 11, wherein magnetic separator is installed in described screen conveyor front end below, rotary screen is installed in the downstream part of magnetic separator.