JP2003025329A - Bulk density increasing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bulk density increasing apparatus which deforms fragments in order to dry the cleaned fragments and to increase the bulk density of the fragments during transportation. SOLUTION: The apparatus is provided with a heating machine 1 which introduces the fragments from an inlet door 7 into an inner cylinder drum 8 and heats the fragments by hot air supplied from a heater 10, a cooling machine 2 which introduces the fragments heated by the heating machine 1 into an inner cylinder drum 9, cools the heated fragments by cold air supplied from a cooler 11, and discharges the fragments outside through a discharge opening door 13, and an intermediate door 5 which partitions the space between the heating machine 1 and the cooling machine 2 and opens/closes the space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recycling process for plastic products, etc.
The present invention relates to a bulk specific gravity increasing device for deforming individual crushed pieces in order to dry the washed crushed pieces and increase the bulk specific gravity of a large amount of the crushed pieces during transportation.

[0002]

2. Description of the Related Art Generally, in a recycling process of plastic products and the like, the plastic products and the like are first crushed into small pieces by a crusher and washed. Subsequently, a large amount of washed crushed pieces are packed in a bag or the like, and the entire bag is transported to a recycling factory by a carrier or the like.

[0003]

Here, the cost of transporting the crushed pieces to the recycling plant or storage in the recycling factory is not determined by the weight of the collected crushed pieces, but the bulk of the crushed pieces ( Volume). In other words, based on the set transportation price and storage price per 1 m ^{3 of} crushed pieces and the volume of the crushed pieces collected,
The cost of transporting and storing debris is determined. Therefore, it is possible to transport and store more crushed pieces at the same cost by increasing the weight per 1 m ^{3 of} crushed pieces stored in a bag during transportation (hereinafter referred to as bulk specific gravity). Reduction of transportation cost and storage cost can be realized.

In view of the above, an object of the present invention is to provide a bulk specific gravity increasing device for deforming individual crushed pieces in order to increase the bulk specific gravity while drying the washed crushed pieces in the subsequent step of the washing step. Is.

[0005]

In order to achieve the above object, the present invention provides a heating method in which crushed pieces are taken into an inner drum from an inlet door and heated by hot air supplied from a heater. Cooling that takes in the processing machine and the shredded pieces that have been heat-treated by the heat processing machine into the inner drum, cools the shredded pieces that have been heated by the cool air supplied from the cooler, and takes them out to the outside through the outlet door. A first feature is that the processing machine and an intermediate door that spatially separates and opens and closes the heat processing machine and the cooling processing machine are provided.

In the bulk specific gravity increasing device having the first feature of the present invention, the heat treatment machine and the cooling treatment machine are integrally supported, and the heat treatment machine is installed above the cooling treatment machine. The second feature is that it is provided with an inclining mechanism that inclines to the position.

Further, according to the present invention, the crushing is carried out by a charging port door for charging the crushed pieces, an outlet door for discharging the crushed pieces after the treatment to the outside, and a cylinder having a large number of punching holes on its side surface. An inner body drum that holds the piece and a heater that heats the outside air; a cooler that cools the outside air; and an exhaust fan that exhausts either the hot air or the cold air that has passed through the inside of the inner body drum to the outside. The third feature is that the device is provided, and the fourth feature is that the bulk specific gravity increasing device is provided with a drive device that drives either one of the heater and the cooler.

In the bulk specific gravity increasing device of the present invention, the fifth feature is that the inner drum is coated with tetrafluoroethylene.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A bulk specific gravity increasing apparatus according to an embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1
FIG. 2 is a diagram for explaining a schematic configuration of the bulk specific gravity increasing device according to the present embodiment, and FIG. 2 is a diagram for explaining the operation of the tilting mechanism of the bulk specific gravity increasing device according to the present embodiment.

<Structure of Bulk Specific Gravity Increasing Apparatus of One Embodiment> The bulk specific gravity increasing apparatus shown in FIG. 1 is roughly classified into a heat treatment machine 1 for drying and immediately deforming the crushed pieces immediately after washing.
A cooling treatment machine 2 for cooling the crushed pieces dried and deformed by the heating treatment machine 1, and a cooling treatment for the heating treatment machine 1 by integrally supporting the heating treatment machine 1 and the cooling treatment machine 2. It is composed of tilting mechanisms 3 and 4 for tilting the machine 2 so as to be in the lower position. Further, an intermediate door 5 is provided between the heat treatment machine 1 and the cooling treatment machine 2 to partition the two treatment machines during the processing in each treatment machine. The intermediate door 5 is covered with a heat insulating material to prevent heat from being transferred from the heat treatment device 1 to the cooling treatment device 2 during the treatment.

The heat treatment machine 1 has a loading port door 7 for loading the crushed pieces immediately after cleaning, an opening / closing mechanism 6 for driving the loading port door 7 to open and close, and a large number of punching holes on the side surface. An inner barrel drum 8 that holds and rotates the crushed pieces by a cylinder, a heater 10 that heats the outside air, and an exhaust fan 14 that exhausts the hot air inside the heat treatment machine 1 to the outside.
It consists of and. A plurality of crosspieces 12 are provided on the inner circumference of the inner drum 8 to scrape the crushed pieces by the rotation of the drum 8. Here, in order to prevent the molten crushed pieces from adhering to the inner surface of the drum and obstructing the flow of hot air even if the crushed pieces melt during the heat treatment, tetrafluoro is used to prevent adhesion of the molten crushed pieces to the inner surface. It is desirable to coat with ethylene. Although the heater 10 is provided in the lower portion of the heat treatment machine 1 in the present embodiment, the position at which the heater 10 is installed is not limited to this.

The cooling processor 2 has a discharge port door 13 for discharging the dried and deformed crushed pieces to the outside, and an opening / closing mechanism (not shown) for driving the discharge port door 13 to open and close.
An inner drum 9 that holds and rotates the crushed pieces by a cylinder having a large number of punching holes on its side, a cooler 11 that cools the outside air, and the cooling air that has passed through the inside of the cooling processor 2 is exhausted to the outside. And an exhaust fan 15. Further, like the drum 8, a plurality of crosspieces 12 for scraping up the crushed material by the rotation of the drum 9 are provided on the inner circumference of the inner drum 9. Although the cooler 11 is provided in the lower portion of the heat treatment machine 1 in the present embodiment, the position at which the cooler 11 is installed is not limited to this.

Further, in the tilting mechanisms 3 and 4, a part of the tilting mechanism 4 serves as a fulcrum to rotate while supporting the upper part thereof, and the tilting mechanism 3 extends in the vertical direction, so that the cooling mechanism 2 is provided as shown in FIG. The heat treatment machine 1 is tilted so that it is in the upper position. The tilting mechanisms 3 and 4 may be composed of a pair of expanding and contracting mechanisms which are individually expanded and contracted. Further, a belt conveyor may be provided between the heat treatment machine 1 and the cooling treatment machine 2, and the crushed material may be transferred by this belt conveyor.

It is possible to store a larger amount of crushed pieces in the inner drum 9 of the cooling processor 2 by deforming the crushed pieces in the heat treatment machine 1 as described later. Therefore, the inner drum 9 of the cooling processor 2 can be made smaller than the inner drum 8 of the heat processor 1. By making the inner drum 9 of the cooling processor 2 small in this way, the internal volume of the cooling processor 2 can be made smaller than the internal volume of the heat processing machine 1, so that the entire volume of the cooling processor 2 is also increased. As a result, the entire bulk specific gravity increasing device can be downsized.

<Treatment Operation in Bulk Density Increasing Apparatus of One Embodiment> Now, the heat treatment (drying, deformation treatment) operation and cooling treatment machine of the crushed pieces in the heat treating machine 1 of the bulk density increasing apparatus constructed as described above. The cooling operation of the crushed pieces in No. 2 will be described below with reference to FIGS. 1 and 2.

First, the wet crushed pieces immediately after washing are put in the inner drum 8 of the heat treatment machine 1 of the bulk specific gravity increasing device, and the crushed pieces after heat treatment are put in the inner body drum 9 of the cooling treatment machine 2. While the inner drums 8 and 9 are rotated, the heater of the heat treatment device 1 heats the outside air to supply hot air into the heat treatment device 1 to perform the heat treatment, and the cooler of the cooling treatment device 2. When 3 cools the outside air, cold air is supplied into the cooling processor 2, and the crushed pieces after the heat treatment are cooled. In the present embodiment, the temperature of the hot air supplied into the heat treatment device 1 can be appropriately changed according to the type of plastic of the crushed pieces,
It is desirable to set the temperature at which the plastic of the crushed pieces does not melt and is not carbonized.

Here, in the heat treatment apparatus 1, the hot air supplied from the heater 10 is exhausted from the exhaust fan 14 of the heat treatment apparatus 1 to the outside of the apparatus as described above. A stream is formed. When the inner drum 8 rotates while such a flow of wind is generated, the crushed pieces are scraped up by the plurality of bars 12, and the crushed pieces are scattered above the inside of the heat treatment machine 1. By applying hot air to the crushed pieces in the separated state from below the heat treatment machine 1, the individual crushed pieces are dried. At this time, each crushed piece heated by the hot air is deformed so that the corner of each crushed piece is rounded. As described above, since the individual crushed pieces are rounded by the heat treatment in the main heat treatment machine 1, it becomes possible to store a large amount of the crushed pieces in a bag or the like when the crushed pieces are transported, and as a result, The bulk specific gravity can be increased. In addition, since the deformation process is performed while the crushed pieces are stirred by the rotation of the inner drum 8, the individual crushed pieces are not combined into a lump by heating.

Also in the cooling processor 2, like the inside of the heating processor 1, the individual crushed pieces are scraped up by the plurality of bars 12 by the rotation of the inner drum 9 and are moved upward in the cooling processor 2. The crushed pieces are scattered. When the crushed pieces in the separated state are hit with the cool air cooled by the cooler 3, the individual crushed pieces subjected to the heat treatment in the heat treatment machine 1 are cooled.

As described above, in the bulk specific gravity increasing apparatus of this embodiment, the heat treatment in the heat treatment machine 1 and the cooling treatment in the cooling treatment machine 2 start and end at the same time. In this way, heat treatment (drying, deformation treatment) and cooling treatment of each crushed piece are performed.

<Crushed Pieces Transfer Operation of Bulk Density Increasing Apparatus of One Embodiment> Next, a crushed piece transferring operation of the bulk density increasing apparatus of this embodiment will be described below. Both processors 1, as described above
Once the predetermined heating and cooling processing in 2 is completed, the present apparatus drives the tilting mechanisms 3 and 4 while keeping the intermediate door 5 closed to tilt the apparatus, and further, the discharge door 1
3 is opened by an opening / closing mechanism (not shown) and the cooling processor 2
By rotating the inner drum 9 of the cooling machine 2
The crushed pieces 9 in the inside are discharged to the outside by the reduction of the static friction force due to the gravity and the rotation of the inner drum 9. At this time, the tilting mechanisms 3 and 4 may vibrate vertically and finely to reduce the static friction force to assist the discharge.

Further, after discharging the crushed pieces that have been cooled as described above to the outside, the present apparatus closes the discharge door 13 and keeps the intermediate door 5 while keeping the inclination of the processing machine. By opening and further rotating the inner drum 8 of the heat treatment machine 1 and reducing the static frictional force due to the rotation of the inner body drum 8, the debris in the inner body drum 8 of the heat treatment machine 1 is removed to the inner body of the cooling treatment machine 2. It can be transferred to the drum 9 by gravity. still,
At this time, the tilting mechanisms 3 and 4 vibrate up and down to reduce the static friction force, thereby assisting the transfer.

After the crushed pieces in the heat treatment machine 1 have been transferred to the cooling treatment machine 2 in this way, the present apparatus uses the tilting mechanisms 3, 4 respectively.
With the device returned to the horizontal position with the intermediate door 5 closed,
By the operator or automatically inserting a new crushed piece immediately after cleaning into the heat treatment machine 1 by opening the inlet door 7,
New heat treatment and cooling treatment can be continuously performed.

As described above, according to the bulk specific gravity increasing apparatus of the present embodiment, the heat treatment and the cooling treatment can be continuously performed, and at the same time, during the drying treatment in the heat treatment machine, individual crushed pieces are removed. The deformation treatment is performed, and as a result, the bulk specific gravity of the crushed pieces stored in a bag or the like during transportation can be increased.

<Other Embodiments> Here, in the first embodiment described above, the bulk specific gravity increasing apparatus for continuously performing the heating treatment and the cooling treatment is described, but all the treatments are performed by one inner drum. It is also possible to configure a bulk specific gravity increasing device.
Hereinafter, a bulk specific gravity increasing device according to another embodiment will be described with reference to FIG. FIG. 3 is a diagram for explaining a schematic configuration of a bulk specific gravity increasing device according to another embodiment.

<Structure of Bulk Specific Gravity Increasing Device According to Other Embodiments> A bulk specific gravity increasing device 21 shown in FIG. 3 has a charging port door 27 for charging crushed pieces and an opening / closing mechanism for driving the door 27 to open and close. 26, a discharge port door 28 for discharging the crushed pieces to the outside after the completion of the entire process, an inner drum 22 for holding and rotating the crushed pieces by a cylinder having a large number of punching holes on the side surface, and the outside air. A heater 23 for heating, a cooler 24 for cooling the outside air, and an exhaust fan 25 for exhausting the hot air or the cold air passing through the inside to the outside of the inner drum 22.
It consists of and. Further, a plurality of crosspieces 29 for scraping up the crushed pieces by the rotation of the drum 22 are provided on the inner circumference of the inner drum 22. The device 21 further includes a drive device (not shown) that drives either one of the heater 23 and the cooler 24.

It should be noted that the molten crushed pieces are prevented from adhering to the inner surface of the inner drum 8 so that the molten crushed pieces do not adhere to the inner surface of the drum and hinder the flow of hot air even if the crushed pieces melt during the heat treatment. For this reason, it is desirable that tetrafluoroethylene be coated. Further, in the present embodiment, the heater 23 and the cooler 24 are provided in the lower part of the device 21, but the positions where the heater 23 and the cooler 24 are installed are not limited to this.

<Treatment Operation in Bulk Specific Gravity Increasing Device of Other Embodiment> Heating treatment (drying, deformation treatment) of the crushed pieces in a state where the crushed pieces are put in the bulk specific gravity increasing apparatus 21 configured as described above, and The cooling processing operation will be described with reference to FIG.

<Drying and Deformation Processing of Bulk Specific Gravity Increasing Device of Other Embodiments> First, put crushed pieces in a wet state immediately after cleaning into the inner drum drum 22 of the bulk specific gravity increasing device 21 and rotate the inner drum drum 22. , Heater 23 of bulk specific gravity increasing device 21
Is driven by a driving device (not shown), and the heater 23
Heats the outside air, thereby supplying hot air into the inner drum 22 to heat the crushed pieces.
In the present embodiment, the temperature of the hot air supplied into the inner drum 22 can be changed as appropriate according to the type of the crushed piece of plastic, as in the first embodiment. It is desirable to set a temperature that does not melt and carbonize.

In this device 21, since the hot air supplied from the heater 23 is exhausted from the exhaust fan 25 to the outside of the device as described above, the air flow shown by the arrow in FIG. 3 is formed. . When the inner drum 22 rotates while such a wind flow is generated, the crushed pieces are separated into a plurality of bars 29.
The scraps are scraped up by, and the crushed pieces are scattered above the inside of the device 21. The crushed pieces in the separated state are subjected to a hot air blow from the lower side of the device 21 to dry each crushed piece. At this time, each crushed piece heated by the hot air is deformed so that the corner of each crushed piece is rounded. As described above, since the individual crushed pieces are rounded by the heat treatment in the present apparatus 21, it is possible to store a large amount of crushed pieces in a bag or the like during transportation of the crushed pieces, and as a result, the bulk specific gravity of the crushed pieces during transportation is increased. Can be increased. The deformation process is performed while the crushed pieces are stirred by the rotation of the inner drum 22, so that the individual crushed pieces are not combined into a lump by heating.

Next, after the above heat treatment is performed, the operation of the heater 23 is stopped by the driving device, and the cooler 24 is driven. When the cooler 24 is driven, the cooler 24 cools the outside air and supplies the cool air into the inner drum 22, so that the shredded pieces are cooled.

The cooling process in this embodiment is performed as follows. As in the heat treatment, the inner drum 22
By the rotation of, the individual crushed pieces are scraped up by the plurality of crosspieces 29, and the crushed pieces are scattered above the inside of the device 21. Therefore, the shattered pieces in the separated state are hit by the cool air cooled by the cooler 24, so that the individual shredded pieces that have been heat-treated before the cooling treatment are cooled.

In this way, the bulk specific gravity increasing apparatus of the present embodiment also performs the heating treatment and cooling treatment of each crushed piece. The operator opens the outlet door 28 of the cooled crushed pieces and takes them out of the apparatus 21, and newly inserts the crushed pieces immediately after washing from the input port door 27 to perform the above-mentioned heat treatment and cooling treatment. Thus, the treatment for increasing the bulk specific gravity of the crushed pieces can be successively applied to the new crushed pieces after washing.

[0033]

As described above, according to the present invention, the bulk specific gravity of the crushed pieces during transportation can be increased by subjecting the crushed pieces to the heat treatment (drying and deformation treatment) and the cooling treatment. As a result, the transportation cost and storage cost of the crushed plastic pieces can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a schematic configuration of a bulk specific gravity increasing device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of the tilting mechanism in the present embodiment.

FIG. 3 is a diagram for explaining a schematic configuration of a bulk specific gravity increasing device according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Heat treatment machine, 2 ... Cooling treatment machine, 3 ... Tilt mechanism (heat treatment machine side), 4 ... Tilt mechanism (cooling treatment machine side), 5 ... Intermediate door, 6 ... Opening / closing mechanism, 7 ... Entrance door, 8 ... Inner drum (heater), 9 ... Inner drum (cooler), 10
... heater, 11 ... cooler, 12 ... crosspiece, 13 ... exhaust door, 14 ... exhaust fan (heat processing machine), 15 ... exhaust fan (cooling processing machine).

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Junichi Sugimoto             Yamanashi Prefecture Yamanashi City Togo Mansion 707-1 Co., Ltd.             Yamanashi Factory, Tokyo Senboshi Machinery Works F term (reference) 3L113 AA03 AB02 AC08 AC36 AC68                       BA01                 4F301 BA29 BF17 BF27 BF31

Claims (5)

[Claims] 1. A heat treatment machine for introducing crushed pieces into the inner drum through an inlet door and heat-treating the crushed pieces with hot air supplied from a heater; and crushed pieces heat-treated by the heat treatment machine. Of the crushed pieces that are taken into the inner drum and cooled by the cool air supplied from the cooler, and taken out to the outside through the outlet door, and the heat treatment machine and the cooling treatment machine. An apparatus for increasing bulk specific gravity, comprising: an intermediate door that spatially separates and opens and closes. 2. A tilting mechanism that integrally supports the heat treatment machine and the cooling treatment machine, and inclines the heat treatment machine so that the heat treatment machine is in an upper position with respect to the cooling treatment machine. The bulk specific gravity increasing device according to claim 1. 3. A crushing piece is held by a charging port door for charging the crushing piece, an outlet door for discharging the crushed piece after processing to the outside, and a cylinder having a large number of punching holes on its side surface. And an inner fan drum, a heater that heats the outer air, a cooler that cools the outer air, and an exhaust fan that exhausts either the hot air or the cool air that has passed through the inner drum to the outside. A bulk specific gravity increasing device. 4. The bulk specific gravity increasing device according to claim 3, further comprising a driving device that drives either one of the heater and the cooler. 5. The bulk specific gravity increasing device according to any one of claims 1, 2, 3 and 4, wherein the inner drum is coated with tetrafluoroethylene.