JP4375547B2 - Waste treatment method and apparatus - Google Patents

Description

The present invention relates to a waste treatment method and an apparatus therefor.

  Conventionally, in the case of a used synthetic resin container, beverages, pasty food, etc. adhere to the inside of the container, and the inner surface of a synthetic resin film for shopping used in department stores etc. In addition, the waste plastic is dusty, sludge, etc. stuck to the waste plastic. In this state, the discarded synthetic resin product is crushed to produce a recycled product, or crushed. Later, they are immersed in a cleaning container and rinsed.

However, when waste plastic is crushed while dust, sludge, etc. are adhered and a recycled product is produced, the mechanical strength of the recycled product is reduced due to dust, sludge, etc., and the product is constantly used as a recycled product.
In addition, even if the material is rinsed by immersing it in a transport basket after crushing, dust, sludge, etc. cannot be sufficiently separated and removed from the waste synthetic resin crushed pieces, and the mechanical strength is sufficient as described above. Recycled products cannot be obtained, which hinders the spread of recycled products.
In order to improve such a problem, the applicant of the present invention is a waste synthetic resin crushed piece washing device for washing a waste synthetic resin crushed piece that has been crushed and roughly washed by a crushing device. The waste synthetic resin crushed pieces that have been crushed and coarsely washed in are received, and at the upper end of the carry-out side, the waste synthetic resin crushed pieces are provided with an outlet for discharging the washed synthetic resin crushed pieces to the outside. Of the bottom of the transport bottle, at least the area on the lower end side of the carry-in side is formed in a mesh shape so that washed water can be drained, and the wash water is supplied into the transport bottle and flows along the bottom. In the transporting cage, a transporting rotary shaft that can rotate around its axis is disposed along the bottom of the transporting cage, and the outer surface of the rotating shaft is provided with the transporting cage. Disposal from the lower end on the carry-in side to the approximate center position Paddle blades for agitating and conveying synthetic resin crushed pieces are arranged, and further, screw blades for conveyance are arranged from the approximate center position of the conveyance cage to the upper end of the carry-out side. Developed a waste synthetic resin crushed piece cleaning device, characterized in that a drive device that rotates the rotating shaft is arranged on the transporting casket or a support frame integrated therewith, and sufficiently discards dust, sludge, etc. It has been succeeded in obtaining a recycled material having sufficient mechanical strength by separating and removing it from the synthetic resin crushed pieces.
Utility Model Registration No. 3096308

  However, even in the developed machine, a considerable amount of moisture such as water droplets remains in the raw material of the obtained recycled product, which is in an unsuitable state for putting it in a bag and storing it.

The object of the present invention is to solve the above-mentioned problems, reduce the moisture content, and make it possible to produce a clean recycled material that can be stored for a long time in a bag.
Furthermore, another object of the present invention is to effectively use washing water in a substantially closed loop and to sufficiently remove water droplets adhering to it while saving water.
Another object of the invention is to sort the crushed material after washing with specific gravity, automatically sort crushed material with light specific gravity floating or semi-submerged on the liquid surface, drain it, evaporate the water, and load it into the bag. And
Another object of the invention is to make it possible to efficiently separate the water droplets of the crushed material to which the water droplets are attached, continuously using centrifugal force.

A method invention that achieves the above-mentioned object sufficiently and sufficiently is to supply the waste synthetic resin crushed pieces that have been crushed, crushed and washed by the crushing apparatus to the inclined first-stage screw-type washing apparatus, and wash water into a shower form. Sprinkle water, further wash the waste synthetic resin crushed pieces, remove the attached dirt, carry it out of the screw-type cleaning device, transfer the washed waste synthetic resin crushed pieces, the first located downstream Made of waste synthetic resin with a low specific gravity that floats on the surface of the liquid or is semi-submerged. The crushed pieces are put into the second stage screw type cleaning device, and the waste synthetic resin crushed pieces of light specific gravity floating or semi-submerged on the liquid surface are washed again in the same way as the first stage screw type cleaning device, Adhesion Was removed, together with further performs sorting of waste synthetic resin fragments by gravity by separator Likewise the specific gravity difference between the first stage and placed in a gravity-specific separation apparatus of the second stage located downstream, dirt remaining The waste plastic resin fragments with a specific gravity that float or semi-submerge on the liquid surface selected in this way are put into the downstream dewatering device via the draining screw conveyor device and discarded in this dewatering device. Moisture adhering to the synthetic resin crushed pieces is separated from the waste synthetic resin crushed pieces, and the waste synthetic resin crushed pieces from which moisture has been removed are supplied to the dryer via an air feeding device. Waste treatment characterized by evaporating and drying water droplets remaining on the waste synthetic resin crushed pieces by stirring and filling the bags with the waste synthetic resin crushed pieces with reduced adhesion of water drops or moisture through a cyclone. way Are you.

  The waste synthetic resin crushed pieces in the waste treatment method are at least one selected from crushed pieces such as synthetic resin bottles, synthetic resin films, agricultural films, synthetic resin cases, returnable boxes, and crushed pieces. To do.

In this waste disposal method, the waste synthetic resin fragments suspended at the liquid surface in each of the specific gravity separation devices are stirred while being submerged in the liquid by a rotating propeller, and the waste synthetic resin fragments and heavy particles with high specific gravity are attached. It is characterized by depositing the dirt on the bottom of each separation device according to specific gravity, transporting it to the outside as appropriate, and transferring the waste synthetic resin crushed pieces of light specific gravity floating on the liquid surface to a downstream device.
A waste synthetic resin crushed piece having a low specific gravity is transferred to a downstream device by a screw transfer unit disposed flush with the liquid level of each of the separation devices according to specific gravity in the waste treatment method. To do.
In this waste treatment method, at least the crushing device, the screw type cleaning device, and the feed tank of the water supply system to each of the specific gravity separation devices are connected to at least the crushing device, the screw type cleaning device, and the specific gravity separation devices. The supply water is circulated and used in communication with the return tank of the drainage system discharged from the centrifugal dehydrator.

A device invention, which is a related invention that achieves the above-mentioned object sufficiently and sufficiently, is an inclined screw that conveys a waste synthetic resin crushed piece that has been crushed, crushed or washed by this crushing device downstream of a crushing device having a water supply section. This type of cleaning device is equipped with a cleaning water sprinkler, and a dewatering unit that receives the washed waste synthetic resin fragments that have been transported out of this screw type cleaning device is located downstream of this screw type cleaning device. A cyclone that receives the waste synthetic resin crushed pieces from which moisture has been removed by the dehydrator via an air feeding device is disposed, and the cyclone has an exhaust port, and a water droplet is attached to or below the cyclone. A filling device for filling the bag with waste synthetic resin crushed pieces with reduced water content is disposed below the cyclone.

The screw type cleaning device receives the waste synthetic resin crushed pieces that have been crushed and washed by the crushing device at the lower end position on the carry-in side, and the waste synthetic resin crushed pieces that have been washed at the upper end portion on the carry-out side to the outside. It has an inclined transport bottle provided with an exit for carrying out, and at least the region on the lower end side of the carry-in side of the bottom of the transport bottle is formed in a mesh shape capable of draining washed water, A cleaning water supply nozzle is provided for supplying cleaning water and flowing along the bottom thereof, and in this transport basket, a transport rotary shaft that can rotate around its axis is arranged along the bottom of the transport pad. On the outer peripheral surface of the rotating shaft, paddle blades for agitating and conveying waste synthetic resin crushed pieces are arranged from the lower end on the carry-in side of the conveying basket to a substantially central position. A screw blade for transportation is arranged from the approximate center position of the basket to the upper end on the carry-out side,
A drive device that rotationally drives the rotation shaft for conveyance is disposed on the conveyance rod or a support frame integrated with the conveyance rod. Dirt removed from the lower end position on the carry-in side is supplied together with washed water, A waste treatment apparatus is characterized in that a separation device for separating washed water and discharging it to the outside is connected to the lower end position on the carry-in side.

  The device invention, which is a related invention that achieves the above-mentioned object sufficiently and sufficiently, is inclined such that a waste synthetic resin crushed piece that has been crushed, crushed or washed by this crushing device is placed downstream of the crushing device having a water supply section. The first-stage screw-type cleaning device is arranged, and the first-stage screw-type cleaning device is provided with a washing water supply unit, and the waste synthetic resin crushed pieces that have been washed are introduced, and the waste synthesis is performed due to the difference in specific gravity. A first-stage specific gravity separation device positioned downstream for sorting resin fragments is installed downstream, and a waste synthetic resin fragment with a low specific gravity floating or semi-submerged on the liquid surface is inserted into the second. A second stage screw type cleaning device is arranged downstream of the first stage specific gravity separation device, and the second stage specific gravity type is charged with waste synthetic resin crushed pieces washed by the second stage screw type cleaning device. Located downstream of the separator, this first A centrifugal dewatering device is installed downstream from the waste synthetic resin crushed pieces having a specific gravity of 1 or less, which is fed into the separation device according to the specific gravity of the stage, and is supplied via a draining screw conveyor device. Disposable synthetic resin crushed pieces in which the waste synthetic resin debris from which moisture has been removed are supplied via an air feeding device and further dried by hot air agitation in this dryer to reduce adhesion of water droplets There is provided a waste treatment apparatus in which a filling device for filling a bag into a bag through a cyclone is arranged.

  In each of the waste separators according to specific gravity, propellers (= rotary blades) that float on the liquid surface and rotate around a horizontal axis are arranged at intervals from upstream to downstream.

  In this waste treatment apparatus, a screw transfer section is disposed on the downstream side of the liquid surface of each of the separators according to specific gravity, which is flush with the liquid surface.

  In this waste treatment apparatus, a screw transfer part that is horizontal with the liquid level of each of the separation devices according to specific gravity is disposed on the downstream side.

  In this waste treatment apparatus, at least the crushing apparatus, the screw type cleaning apparatus, and the supply tank of the water supply system to each of the specific gravity separation apparatuses are at least the crushing apparatus, the screw type cleaning apparatus, and each of the specific gravity separation apparatuses. The supply water can be circulated and communicated with a return tank of a drainage system discharged from the dehydrator.

According to the method invention described in claims 1 to 4 , it is possible to produce a crushed piece which is a raw material of a clean regenerated product which can be stored in a bag for a long period of time by reducing moisture.
In particular, the method invention according to claim 4 can use the washing water effectively in a substantially closed loop, and can sufficiently remove water droplets or moisture adhering thereto while saving water.
Furthermore, the cleaning water is effectively used in a substantially closed loop, and water droplets or moisture adhering thereto can be sufficiently removed while saving water.
In addition, the crushed material after washing is subjected to specific gravity selection, and the crushed material having a light specific gravity floating or semi-submerged on the liquid surface is automatically selected, drained, and moisture can be evaporated and loaded into a bag.
The apparatus invention according to claim 5 can sufficiently remove the adhering water droplets or moisture while effectively using the cleaning water in a substantially closed loop while saving water.
Furthermore, the cleaning water is effectively used in a substantially closed loop, and water droplets or moisture adhering thereto can be sufficiently removed while saving water .
In addition, the crushed material after washing is subjected to specific gravity selection, and the crushed material having a light specific gravity floating or semi-submerged on the liquid surface is automatically selected, drained, and moisture can be evaporated and loaded into a bag .
In the apparatus invention according to claims 6 to 9, the method invention can be carried out, and the effect can be sufficiently exhibited.

Embodiment 1
This form is a typical embodiment of the apparatus invention according to claim 5. In FIG. 1, reference numeral 10 denotes the whole waste treatment apparatus, and the waste treatment apparatus 10 includes a crushing apparatus 11 having a water supply unit. Downstream of the crushing device 11, a screw type cleaning device 12 in which the waste synthetic resin crushed pieces that have been crushed and washed by the crushing device 11 are inclined is disposed. The screw type cleaning device 12 is attached to the cleaning water sprinkling unit 13. Has been.
In the crushing device 11, when the supply of washing water from the water supply unit to the crushing unit is stopped according to the type of the object to be crushed and the contamination state, the waste synthetic resin crush pieces are crushed dry. There is also.
A centrifugal dewatering device 14, which is a type of dewatering device that receives the washed synthetic resin crushed pieces transported out of the screw type cleaning device 12, is disposed downstream of the screw-type cleaning device 12, and moisture is removed by the centrifugal dewatering device 14. A cyclone 16 for receiving the waste synthetic resin crushed pieces via the air feeding device 15 is disposed. In the cyclone 16, water that remains in the waste synthetic resin crushed pieces and air that swirls mist generated therefrom is swirled. An exhaust port 17 is provided in the center of the upper portion for exhausting the gas in a flow, and a filling device 18 for filling the bag with waste synthetic resin crushed pieces in which water droplets are attached and water is reduced is disposed below the cyclone 16. .
The dewatering device is not limited to the centrifugal dewatering device 14, but may be a device having a pair of squeezing rollers or a device for dewatering with a compressive force. However, the centrifugal dewatering device 14 is preferably used.

The screw type cleaning device 12 receives the waste synthetic resin crushed pieces crushed and washed by the crushing device 11 at the lower end position on the carry-in side, and the waste synthetic resin crushed pieces washed at the upper end portion on the carry-out side. An inclined transporting ridge 19 provided with an outlet for carrying out to the outside is provided, and at least a region on the lower end side of the carrying-in side of the bottom of the transporting ridge 19 is formed in a mesh shape so that washed water can be drained. A cleaning water supply nozzle that supplies cleaning water and flows along the bottom thereof is provided in the transport basket, and this cleaning water supply nozzle corresponds to the cleaning water sprinkler 13.
In the transport rod 19, a transport rotary shaft that can rotate around its axis is arranged along the bottom of the transport rod 19, and the outer peripheral surface of the rotary shaft has a lower end on the carry-in side of the transport rod. A paddle blade 20 is also used for stirring and transporting the waste synthetic resin crushed pieces from the substantially central position to the upper end of the unloading side from the substantially central position of the transporting bowl. The drive device 22 for rotating the rotation shaft for conveyance is disposed on the conveyance cage or the support frame 23 integrated therewith, and the dirt removed from the lower end position on the carry-in side has been cleaned. A separator 14a that is supplied together with water and separates dirt and washed water and discharges it to the outside is connected to the lower end position on the carry-in side.
An example of the centrifugal dehydrator 14 will be described below.
In FIG. 3, in the centrifugal dewatering device 14, a funnel-shaped raw material charging hopper 24 extends from the top surface to the bottom surface of a centrifugal dewatering basket 25 that is rotatably arranged around the rotation axis in the box-shaped machine frame of the device. The vertical centerline of the centrifugal dewatering bowl 25 and the vertical rotation axis of the centrifugal dewatering bowl 25 are decentered, and the inserted raw material charging hopper is fixed to the upper lid of the box-shaped machine frame. A large number of drain holes 26 are formed in the inclined peripheral surface inclined in a funnel shape from the peripheral surface to the peripheral surface, and the upper peripheral surface of the centrifugal dewatering basin 25 is a cylindrical surface, and a vacuum intake pipe 27 for sucking and discharging the material after dehydration. A lower end opening 28 is formed in the vicinity of the upper inner peripheral surface of the centrifugal dewatering bowl. A release plate 29 that is inscribed in the inner wall of the peripheral surface and peels the dehydrated raw material from the peripheral surface of the centrifugal dewatering basket 25 is provided in the opening 28 along the inner wall in the axial direction of the centrifugal dewatering basket 25.
A clogging prevention plate of the drain hole 26 is fixed to the outer peripheral surface of the raw material charging hopper 24 while being inclined toward the inclined peripheral surface, and the box-shaped machine frame is drained from the drain hole of the centrifugal dewatering trough. A drainage unit and an exhaust unit for discharging the liquid to the outside of the apparatus are provided.

The operation of the apparatus having the above configuration will be described together with its usage .
The waste synthetic resin crushed pieces that have been crushed and washed by the crushing device 11 are put into an inclined screw-type washing device 12 and the cleaning water is supplied, the waste synthetic resin crushed pieces are further washed, and the attached dirt The waste synthetic resin crushed pieces are transferred to the downstream centrifugal dewatering device 14 and transferred to the downstream centrifugal dewatering device 14. The adhering water is blown off from the waste synthetic resin crushed pieces by centrifugal force, and the waste synthetic resin crushed pieces from which the water has been removed are supplied to the cyclone 16 via the air feeding device 15. The water droplets remaining on the crushed pieces are put on a swirling air flow and exhausted from the exhaust port 17 of the cyclone 16, and the waste synthetic resin crushed pieces with reduced adhesion of the water droplets are filled in the bag.
The waste synthetic resin crushed pieces are at least one selected from a synthetic resin bottle, a synthetic resin film, an agricultural film, a synthetic resin case, a crushed piece such as a returnable box, or a crushed piece, or a mixture thereof.
In the screw type cleaning device 12, the waste synthetic resin crushed pieces that have been crushed and cleaned by the crushing device at the lower end position on the carry-in side are received, and the waste synthetic resin crushed pieces that have been washed at the upper end on the carry-out side are externally The finely pulverized matter that cannot be conveyed from the lower end position on the carry-in side is supplied to the separator together with the sewage, and the pulverized matter and the sewage are separated by the separator 24 and discharged to the outside.
The operation of the centrifugal dewatering device 14 will be further described. The center line of the funnel-shaped raw material charging hopper 24 and the rotational axis of the centrifugal dewatering tub 25 are eccentrically inserted from the upper surface to the bottom surface of the centrifugal dewatering tub 25. Since the raw material charging hopper 24 is fixed to the machine frame, the raw material charged from the raw material charging hopper 24 to the bottom surface of the centrifugal dewatering vessel 25 is immediately subjected to centrifugal force and stays there. In addition, the water is diffused from the bottom surface of the centrifugal dewatering bowl 25 toward the peripheral surface, and water is drained from the drain holes 26 formed in the inclined peripheral surface inclined in a funnel shape. Then, the air is moved by the centrifugal force of the decompression intake pipe 27 along the air flow and moves toward the inner peripheral surface of the upper part of the centrifugal dewatering basket 25, and is sucked from the opening 28 of the decompression intake pipe 27. Is Together, the raw material that adheres to the inner wall of the peripheral surface of the centrifugal dewatering basket 25 is peeled from the peripheral surface of the centrifugal dewatering basket 25 by the separation plate 29 of the opening 28 attached inscribed in the inside wall due to rotation of the centrifugal dewatering basket 25, It is sucked into the opening 28 and discharged. The clogging of the drain hole 26 formed in the inclined peripheral surface of the centrifugal dewatering bowl 25 is in contact with or very close to the inclined surface of the centrifugal dewatering bowl 25 while the tip of the clogging prevention plate (including a brush) is rotating. As a result, the raw material is removed from this portion and clogging is eliminated. As a kind of raw material, the washed waste synthetic resin crushed pieces are treated to remove the moisture.

Embodiment 2
This embodiment is intended to indicate a representative embodiment of the apparatus aspect of the present invention 6-9 wherein.
In FIG. 2, an inclined first-stage screw-type cleaning device 40 into which a waste synthetic resin crushed piece that has been crushed, crushed or washed by the crushing device 30 is placed downstream of the crushing device 30 having a water supply unit. The first-stage screw-type cleaning device 40 is provided with a cleaning water sprinkling unit, and the waste synthetic resin crushed pieces that have been washed are put in, and the waste synthetic resin crushed pieces are selected based on the difference in specific gravity. A first-stage separation apparatus 50 by specific gravity located downstream is installed downstream, and a second-stage screw-type washing apparatus 60 into which a light waste synthetic resin crushed piece having a specific gravity of 1 or less is charged is a first-stage separation apparatus 50. It is located downstream of the separation device 50 by specific gravity, and is located downstream of the separation device 70 by specific gravity where the waste synthetic resin crushed pieces washed by the second stage screw type washing device 60 are introduced. Second-stage separation device by specific gravity A centrifugal dewatering device 90 is installed downstream of the waste synthetic resin crushed pieces having a specific gravity of 1 or less selected and supplied via a draining screw conveyor device 80. A dryer 110 to which the waste synthetic resin crushed pieces from which the water has been removed is supplied via the air feeding device 100 is disposed, and the dryer 110 is further dried by stirring with hot air to reduce the adhesion of water droplets. A filling device 130 that fills the bag with the crushed pieces through the cyclone 120 is disposed.
In each of the separation devices 50 and 70 according to specific gravity, propellers 51 and 71 which float on the liquid surface and rotate around the horizontal axis are arranged at intervals from upstream to downstream.
Screw transfer sections 52 and 72 which are inclined horizontally or downwardly from the same or lower than the liquid level of the separating devices 50 and 70 by specific gravity are arranged on the downstream side. The horizontal screw transfer units 52 and 72 may be directly supplied to the draining screw conveyor device 80 without providing them.
The supply tank 140 of the water supply system to the crushing device 30, the screw type cleaning devices 40 and 60, and the separation devices 50 and 70 according to specific gravity are the crushing device 30, the screw type cleaning devices 40 and 60, and the centrifugal dehydration. The supply water can be circulated and used in communication with the return tank 150 of the drainage system discharged from the apparatus 90.

This mode-specific action will be described as a typical embodiment of the method invention according to claims 1 to 4 .
The waste synthetic resin crushed pieces that have been crushed, crushed and washed by the crushing device 30 are put into the inclined first-stage screw-type washing device 40 and the washing water is supplied to further wash the waste synthetic resin crushed pieces. Then, the adhered dirt is removed and carried out of the first-stage screw-type cleaning device 40, and the washed waste synthetic resin crushed pieces are transferred to the first-stage separation device 50 by specific gravity located downstream. The waste synthetic resin crushed pieces are sorted according to the difference in specific gravity, and the remaining synthetic resin crushed pieces with heavy specific gravity such as PVC and PET are precipitated and floated on the liquid surface. Or, a waste synthetic resin crushed piece having a specific gravity that is semi-submerged, such as polyethylene or polypropylene crushed piece, is put into the second stage screw type cleaning device 60, and the specific gravity is the same as the first stage screw type cleaning device 40. The following light waste synthetic resin crushed pieces are washed again, and contaminants such as dirt are removed, and further fed into the second-stage specific gravity separation apparatus 70 located downstream, and the first-stage specific gravity separation apparatus. Similarly to 50, the waste synthetic resin crushed pieces are selected based on the difference in specific gravity, and the remaining dirt is precipitated. The lightly discarded synthetic resin crushed pieces having a specific gravity of 1 or less thus selected are put into the downstream centrifugal dewatering device 90 through the draining screw conveyor device 80, and the discarded synthetic resin crushed pieces are separated by this centrifugal dewatering device 90. Moisture adhering to the waste synthetic resin crushed pieces is blown off by centrifugal force, and the waste synthetic resin crushed pieces from which moisture has been removed are supplied to the dryer 110 via the air feeding device 100, and hot air is supplied to the dryer 110. Water droplets remaining on the waste synthetic resin crushed pieces are further evaporated and dried by stirring, and the waste synthetic resin crushed pieces with reduced adhesion of water drops are filled into the bag through the cyclone 120.
The waste synthetic resin crushed pieces introduced by the propellers 51 and 71 rotating in a floating manner on the liquid surface in the separation devices 50 and 70 by specific gravity are submerged in the liquid, and the waste synthetic resin crushed pieces having high specific gravity and adhering to each other. The contaminated dirt is dropped and settled on the bottoms of the separation devices 50 and 70 by specific gravity, and the waste synthetic resin crushed pieces having a low specific gravity floating on the liquid surface are transferred to a downstream device.
It is preferable to transfer the waste synthetic resin crushed pieces having a low specific gravity to a downstream device by a horizontal screw transfer unit arranged flush with the liquid surfaces of the separation devices 50 and 70 by specific gravity.
The said deposit is carried out outside suitably. For example, the operation is temporarily stopped. Alternatively, a vertical or high-angle screw conveyor or belt conveyor for pumping may be separately provided, or a device for carrying out the separation devices 50 and 70 by specific gravity may be added by a suction pipe.
The crushing device 30, the screw type cleaning devices 40, 60, the feed tank 140 of the water supply system to each of the specific gravity separation devices 50, 70, the crushing device 30, the screw type cleaning devices 40, 60, a centrifugal dehydrator The supply water is circulated and used in communication with the return tank 150 of the drainage system discharged from 90.

1 is an overall schematic view of an apparatus according to a first embodiment. It is the whole external schematic diagram of the apparatus in Embodiment 2. It is a longitudinal cross-sectional view of a centrifugal dehydrator .

DESCRIPTION OF SYMBOLS 10 Waste processing apparatus 11, 30 Crushing apparatus 12, 40, 60 Screw-type washing apparatus 14, 90 Centrifugal dehydration apparatus 16, 120 Cyclone 18, 130 Filling apparatus 50, 70 Separating apparatus 110 by specific gravity 110 Dryer

Claims (9)

  The waste synthetic resin crushed pieces that have been crushed, crushed and washed by the crushing device are put into the inclined first-stage screw-type washing device, and the washing water is sprinkled into a shower to further wash the waste synthetic resin crushed pieces. Then, the attached dirt is removed and transported out of the screw-type cleaning device, and the washed synthetic resin crushed pieces are transferred to the first-stage separation device by specific gravity, which is located downstream. The waste synthetic resin crushed pieces are sorted by the above, the remaining dirt is settled, and the waste synthetic resin crushed pieces of light specific gravity floating or semi-submerged on the liquid surface are put into the second stage screw type washing device. In the same way as the first stage screw-type cleaning device, the waste synthetic resin crushed pieces of light specific gravity floating or semi-submerged on the liquid surface are washed again, and contaminants such as dirt are removed, and further downstream. Second stage ratio In the same way as the first-stage specific gravity separator, the waste synthetic resin crushed pieces are sorted according to the difference in specific gravity, and the remaining dirt is settled. Waste synthetic resin crushed pieces with a low specific gravity floating or semi-submerged are put into a downstream dewatering device via a draining screw conveyor device, and the water adhering to the waste synthetic resin crushed pieces is discarded by this dewatering device. The waste synthetic resin crushed pieces separated from the resin crushed pieces and removed from the moisture are supplied to the dryer via an air feeding device, and in the dryer, the waste synthetic resin crushed pieces remain further by hot air stirring. A waste treatment method comprising evaporating and drying water droplets, and filling the bag with waste synthetic resin crushed pieces with reduced adhesion of water droplets or moisture through a cyclone.   The waste synthetic resin fragments floating on the liquid surface in each of the specific gravity separators are agitated while being submerged in the liquid with a rotating propeller, and each of the specific gravity waste waste synthetic resin fragments and adhering dirt is removed. The waste treatment according to claim 1, wherein the waste synthetic resin is precipitated at the bottom of the separate separation device and appropriately transported to the outside, and the waste synthetic resin fragments having a low specific gravity floating on the liquid surface are transferred to a downstream device. Method.   3. A waste synthetic resin crushed piece having a low specific gravity is transferred to a downstream device by a screw transfer unit arranged flush with or below the liquid level of each of the separation devices according to specific gravity. The waste disposal method described.   At least the crushing device, the screw type cleaning device, and the water supply system supply tank to each of the specific gravity separation devices, at least the crushing device, the screw type cleaning device, and the drainage system return tank discharged from the dehydrating device; The waste disposal method according to claim 1, 2, or 3, wherein the supply water is circulated and used in communication.   An inclined screw-type cleaning device is disposed downstream of the crushing device having the water supply unit to convey the waste synthetic resin crushed pieces that have been crushed, crushed and washed by the crushing device, and the cleaning water sprinkling unit is disposed in the screw-type cleaning device. The dewatering device that receives the washed waste synthetic resin fragments that have been transported out of the screw-type cleaning device is placed downstream of this, and the waste synthetic resin shredded from which moisture has been removed by this dewatering device A cyclone that receives a piece via an air feeding device is disposed, and an exhaust port is provided in the cyclone, and a filling device that fills a bag with a waste synthetic resin crushed piece in which water droplets are adhered or moisture is reduced below the cyclone. Is located below this cyclone,
  The screw type cleaning device receives the waste synthetic resin crushed pieces that have been crushed and washed by the crushing device at the lower end position on the carry-in side, and the waste synthetic resin crushed pieces that have been washed at the upper end portion on the carry-out side to the outside. It is equipped with a slanted transport bottle provided with an outlet for carrying out, and at least a region on the lower end side of the carry-in side of the bottom of the transport bottle is formed in a mesh shape so that washed water can be drained. Has a cleaning water supply nozzle that supplies cleaning water and flows along the bottom of the transporting basin, and a transport rotary shaft that can rotate around its axis is disposed along the bottom of the transport basin. On the outer peripheral surface of the rotating shaft, a battle synthetic blade for stirring and transporting the waste synthetic resin crushed pieces is disposed from the lower end on the carry-in side of the transport basket to a substantially central position. From the approximate center position of the unloading side Screw blade for conveying the over is Yes disposed,
A drive device that rotationally drives the rotation shaft for conveyance is disposed on the conveyance rod or a support frame integrated with the conveyance rod. Dirt removed from the lower end position on the carry-in side is supplied together with washed water, A waste treatment apparatus, wherein a separation device for separating washed water and discharging it to the outside is connected to the lower end position on the carry-in side.   Downstream of the crushing device having the water supply section, an inclined first-stage screw type cleaning device into which the waste synthetic resin crushed pieces that have been crushed, crushed and washed by this crushing device are placed is disposed. The stage screw type cleaning device is provided with a washing water supply unit, and the waste synthetic resin crushed pieces that have been washed are put into the first stage, and the waste synthetic resin crushed pieces are sorted by the specific gravity difference. A second-stage screw-type cleaning device is installed on the downstream side of this, and a second-stage screw-type cleaning device into which a waste synthetic resin crushed piece of light specific gravity floating or semi-submerged on the liquid surface is placed is the first-stage specific gravity separation device. Located downstream of the second-stage specific gravity separation device into which the waste synthetic resin crushed pieces washed by the second-stage screw-type washing device are placed, this second-stage specific gravity separation device To float on the liquid surface or submerge Weight of light waste plastic fragments dewatering device supplied via the draining screw conveyor device is installed downstream, the moisture removal is at this dehydrator A dryer for supplying the waste synthetic resin crushed pieces via an air feeding device is disposed, and further drying is performed by stirring with hot air in this dryer, and the waste synthetic resin crushed pieces with reduced water adhesion or moisture are removed. A waste treatment apparatus, wherein a filling device for filling a bag through a cyclone is disposed.   7. The waste treatment apparatus according to claim 5, wherein in each of the separation devices by specific gravity, propellers that float on the liquid surface and rotate around a horizontal axis are arranged at intervals from upstream to downstream.   The waste treatment apparatus according to claim 5 or 6, wherein a screw transfer section is disposed on the downstream side of the liquid surface of each of the separation devices according to specific gravity. .   At least the crushing device, the screw-type cleaning device, and the water supply system supply tank to the specific gravity separation devices are at least the crushing device, the screw-type cleaning device, and the drainage system return tank discharged from the dehydrating device. 9. The waste treatment apparatus according to claim 5, 6, 7 or 8, wherein the water supply can be circulated for communication.

Images