JPH07223223A - Waste plastic material treatment device - Google Patents

Abstract

PURPOSE:To provide a waste plastic material treatment device which is capable of decreasing significantly the volume of a waste plastic material produced in a large quantity at general households or offices, and at the same time, can be easily operated and treated the material rapidly. CONSTITUTION:A waste plastic material treatment device is composed of a sealed and freely expandable/contractable cylinder part 5 covered with a bag, a heating means which heats a waste plastic material stored in the cylinder part 5, and a decompression means which decompresses the interior of the cylinder part 5 by a differential pressure between an atmospheric pressure and the interior pressure. In addition, an open hole closing means is provided in a hot blast blowout hole 10 through which a hot blast is blown into the cylinder part 5 as technical measures. In addition, air holes 60a, 60b are provided at the lower part of a cylindrical plate 5a which is outer peripheral side of a bottom plate 5b of the cylinder part 5 or the lateral side of the cylinder 5. The appropriate open hole closing means is represented by an air pressure blocking means or a slide closing means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste plastic material processing apparatus which can greatly reduce the volume of waste plastic material generated in large quantities from ordinary households or businesses and is easy to handle.

[0002]

2. Description of the Related Art When packaging foods, precision instruments, etc., plastic containers and packaging materials are often used. The plastic containers and packaging materials are turned into garbage immediately when they are used. Recently, it is said that nearly 80% of the garbage generated by ordinary households is this waste plastic material. This waste plastic material that has been turned into garbage is originally a large amount and is also very bulky in terms of volume. Since this waste plastic material is often collected and collected by a garbage truck, it is often carried out in a treatment facility such as an incinerator or a landfill site, so in general households, this waste plastic material is bulky until the day it is collected. It must be stored in the open condition. Moreover, it is necessary to transport it to the collection site by the time the collection is done. Also, the processing of waste plastic materials generated from operations such as fast food restaurants, cafeterias, and supermarkets is basically the same as the processing of waste plastic materials that come out of this general household.

In order to solve the problems associated with the treatment of such waste plastic materials, some apparatuses have been proposed for treating the waste plastic material at or near the source of the waste plastic material. Typical examples thereof are a heating combustion device and a heating melting device using a heater and gas. In addition, a heating and melting device using frictional heat has been proposed. However, all of them are large and suitable only when a large amount of waste plastic material is generated.

In supermarkets and the like, it can be seen that collected plastic food trays, bottles, etc. are collected in one place and reused as recycled products, but the equipment becomes enormous and they are collected. In terms of cost, recycling has not yet reached the point where it costs money.

To overcome these problems, a method of heating and compressing with hot air and reduced pressure air has recently been proposed by the present applicant. This is to put waste plastic into the waste container, circulate hot air in the treatment tank to heat and soften the waste plastic, and compress it by the pressure difference between the depressurized air and atmospheric pressure to form a block. is there.

[0006]

However, this conventional technique has the following problems. That is, when heated and compressed with hot air and air pressure, the waste plastic material that is softened and melted enters the holes for sending hot air and the air holes for circulation, and when the waste plastic material is cooled after being compressed, it remains in these holes. The waste plastic material hardens and becomes difficult to remove. However, these holes cannot be removed.

The present invention is intended to solve the above-mentioned conventional problems, and can greatly reduce the volume of waste plastic material that is produced in large quantities from ordinary households and businesses, and is easy to handle. It is an object of the present invention to provide a waste plastic material processing device capable of rapid processing.

[0008]

In order to solve the above-mentioned problems, the waste plastic material processing apparatus of the present invention takes technical means of providing opening closing means in the hot air blowing holes.

Further, the waste plastic material treating apparatus of the present invention is characterized in that an air hole is provided on the outer peripheral side of the bottom plate of the tubular portion or on the lower portion of the body plate which is the side surface of the tubular portion.

In the waste plastic material treating apparatus of the present invention, it is desirable that the opening closing means is a wind pressure closing means.

In the waste plastic material treating apparatus of the present invention, it is appropriate that the opening closing means is a slide closing means.

[0012]

Since the present invention takes the technical means of providing the opening closing means in the hot air blowing hole, when the waste plastic in the tubular portion is compressed due to the depressurization of the tubular portion, the waste plastic enters the hot air blowing hole. The hot air blowing hole is closed and solidified as it is, and there is no difficulty in taking out the block after the treatment. Also, since air holes are provided on the outer peripheral side of the bottom plate of the cylinder part or on the lower part of the body plate which is the side surface of the cylinder part, heat can be effectively exchanged and the air hole of the waste plastic material generated at the time of compression with a simple structure It is possible to significantly reduce the entry. Further, since the wind pressure closing means is adopted as the opening closing means, the hot air blowing hole can be closed by the force of the air accompanying the pressure reduction, and the waste plastic material can be closed with a simple structure so as not to enter. Since the opening closing means is the slide closing means, it is possible to reliably prevent the waste plastic material from entering the air holes.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of an essential part showing a state during heating of a waste plastic material processing apparatus according to an embodiment of the present invention, and FIG. 2 shows a state after compression processing of a waste plastic material processing apparatus according to an embodiment of the present invention. It is an important section longitudinal cross section shown. FIG. 3 (a) is a closed state view of the slide closing means of the waste plastic material processing apparatus in one embodiment of the present invention, FIG.
FIG. 3B is a diagram showing a drive device of a slide closing means of a waste plastic material processing apparatus according to an embodiment of the present invention, and FIG. 3C is a closed state of a slide closing means of a waste plastic material processing apparatus according to another embodiment of the present invention. It is a figure. In addition, FIG.
FIG. 4 is a closed state view of the wind pressure closing means of the waste plastic material processing device according to another embodiment of the present invention, and FIG. 4B is a closed state of the wind pressure closing means of the waste plastic material processing device according to yet another embodiment of the present invention. The figure is shown. FIG. 5 (a) is a diagram showing a flow state of hot air in a tubular portion of the waste plastic material processing apparatus in one embodiment of the present invention, and FIG. 5 (b) is an air hole up to the center of the bottom plate in one embodiment of the present invention. FIG. 5 (c) is a comparative example diagram showing a flow state of hot air provided with the above, and FIG. 5 (c) is a comparative example diagram showing a flow state of hot air provided with an air hole in an upper side surface in one embodiment of the present invention.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a processing tank portion, an outer container 2 having a flange, an outer container guide 3 serving as a bottom body of the outer container 2, and a heat-resistant bag provided in the outer container 2. It is composed of a body 4 and a tubular portion 5. The cylindrical portion 5 is composed of a plurality of side wall body plates 5a assembled in a node shape and a bottom plate 5b, and is telescopically expandable and contractible to make the inner volume of the container variable. Then, the bag body 4 and the tubular portion 5 form a container for charging and storing the waste plastic material. The edge portion of this container is hermetically fixed by the flange portion of the outer container 2. The bag body 4 covers and hermetically seals the tubular portion 5, and shuts off the outside of the processing bath portion 1 and the inside of the tubular portion 5. The bag 4 made of a polybutyl terephthalate (PBT) film is the most suitable in terms of heat resistance and cost. An air bag coated with polytetrafluoroethylene is also excellent when heat resistance is emphasized, but polybutyl terephthalate (P
BT) film is preferable. Each body plate 5a
And a plurality of air holes 60a, 60 on the outer peripheral side of the bottom plate 5b.
b and 60c are provided. Reference numeral 6 denotes an outside air introduction port attached to the outer container guide 3. On the upper surface of the outer container guide 3 facing the bottom plate 5b, a heat dissipation plate made of metal having high thermal conductivity is provided to promote heat dissipation. A lid 7 is provided on the upper portion of the processing bath 1 to cover it. A heater 8 is provided at the center of the lid 7, and an electric heater 9 used for heating air is installed.
The heater 8, the electric heater 9, and a circulation fan 14 described later constitute a heating means. A hot air blowing hole 10 including a large number of through holes is provided below the heater 8. Below the hot air blowing hole 10, a heat resistant blowing hole bag 31 is attached. Blowing hole bag 3
Reference numeral 1 denotes an aperture closing means, particularly a wind pressure closing means closed by wind pressure, which will be described in detail later. Reference numeral 11 is a lid body, and a plurality of air holes 12 are provided on the outer peripheral portion.
a and 12b are provided to serve as a return port for the hot air blown out. Reference numeral 13 is an inner lid, and 14 is a circulation fan, which is attached to the outside of the heater 8 and the inner lid 13. Reference numeral 15 denotes a temperature detector for controlling hot air, and it is desirable that the mounting position be near the hot air blowing hole 10. However, when a self-temperature control type electric heater 9 is used, the temperature detector 15 is naturally unnecessary. 16 is an air connection port attached to the inner lid 13,
17 is an upper lid. Reference numeral 18 is a lid packing for forming a predetermined hot air circulation path. 19 is the processing tank section 1 and the lid section 7.
Is a lock mechanism that keeps the machine closed during operation, ensuring the hermeticity and ensuring work safety. Reference numeral 20 is a handle for opening and closing the lid 7. 21 is a processing tank section 1 and a lid section 7.
The support member is composed of a base 22 and columns 23. The outer container guide 3 is fixed to the base 22, and the lid 7 is fixed to the column 23 by a hinge 24. Reference numeral 25 denotes a damper mounted between the support member 21 and the lid portion 7, which constantly biases the lid portion 7. This facilitates the opening / closing operation of the lid portion 7. Lock mechanism 1
When the lid 9 is removed, the lid 7 is opened by the urging force of the damper 25, when the lid 7 is closed, the lid 7 smoothly overlaps with the processing tank portion 1 and is hermetically closed by the lock mechanism 19. The lock mechanism 19 may be of any type as long as it can be locked, but in addition to the one that is opened and closed by the handle 20 described above, the one that is locked by remote control by the switch operation on the operation panel of the control circuit section 30 is convenient. It is desirable from the viewpoint of doing.

Reference numeral 26 is an air control unit, and 27 is a decompression pump used for decompressing the air in the tubular portion 5. The decompression pump 27 is usually a vacuum pump, but when the degree of decompression in the tubular portion 5 is small, a high pressure fan can be substituted. A plurality of decompression pumps 27 are provided, and these can be operated in parallel by operating the air control unit 26 to increase the displacement, or can be operated in series to increase the decompression degree. Has become. Air connection port 16
Is connected to the suction port of the decompression pump 27 by a heat and pressure resistant pneumatic tube 28. In this embodiment, the set pressure during depressurization is -0.1 to -0.3 kgf / cm ² .
The set pressure can be increased or decreased according to the purpose of use, but when the normal waste plastic material is treated, the above-mentioned reduced pressure setting is sufficient. And if the differential pressure is too large, it is necessary to study the safety of the device, albeit relatively, and it becomes impossible to provide an inexpensive device for increasing the capacity of the decompression pump. The setting is advantageous. 29 is 2
A pneumatic tube similar to that of No. 8 is connected to the outlet of the decompression pump 27 to release air into the atmosphere.

30 is an electric heater 9, a circulation fan 14,
The control circuit unit controls the decompression pump 27 and the like, and is configured to be attachable to the support member 21 in consideration of installation space, operability, and the like. It is the same regardless of where it is installed if necessary. The control circuit unit 30 is provided with an operation panel, and the entire waste plastic material processing apparatus of this embodiment can be controlled by operating switches on the operation panel.

The operation of this embodiment will be described. First, the lid portion 7 is opened and the waste plastic material is put into the tubular portion 5. Then, the lid 7 is closed and the heater 8 is operated. That is, the electric heater 9 is energized to raise the temperature of the heater 8, and at the same time, the circulation fan 14 is operated. The generated hot air is blown out from the hot air blowing hole 10 and is supplied into the tubular portion 5. The waste plastic material put inside is heated by this hot air. The hot air is discharged to the outside of the tubular portion 5 through a circulating air hole 60a provided on the outer peripheral side of the bottom plate 5b of the tubular portion 5 and an air hole 60b on the lower side of the body plate 5a which is a side surface of the tubular portion 5. To be done. Hereinafter, the body plate 5a, which is the side surface of the tubular portion 5, will be referred to as the side surface of the tubular portion 5 for simplicity. The air holes for circulation on the side surface of the tubular portion 5 may be appropriately formed not only at the lower portion of the lateral surface of the tubular portion 5 but also above the side surface of the tubular portion 5. The air hole 60a provided on the outer peripheral side of the bottom plate 5b of the tubular portion 5 will be described in detail later. The hot air discharged is the bag 4
And the cylindrical portion 5 are moved upward, pass through the air holes 12a of the lid body 11, and are sucked by the circulation fan 14. Then, it is again sent to the heater 8 and becomes hot air to circulate in the inner space of the tubular portion 5. By the way, there may be a case where a large amount of waste plastic material is input or the waste plastic material does not allow hot air to pass through. In such a case, the hot air is not discharged from the air holes 60a provided on the outer peripheral side of the bottom plate 5b, but is circulated in the tubular portion 5, and then the air holes 12 of the lid body 11 are circulated.
It is sucked into the circulation fan 14 through b. After this, it will circulate again in the inner space of the tubular portion 5. In this way, two hot air circulation paths are formed inside and outside the tubular portion 5. By the way, the heating temperature of the waste plastic material is 1
The temperature is controlled so as to fall within a predetermined temperature range while detecting the temperature of the temperature detector 15 provided near 0. Considering the current situation where most of the waste plastic materials are styrene type, it is appropriate to keep the temperature around 130 degrees. When the temperature of the waste plastic material in the tubular portion 5 is raised to this temperature range, the waste plastic is reduced in volume and gathers in the center.
Therefore, in order to further reduce this volume, the decompression pump 27
Is started to reduce the pressure in the tubular portion 5. After a while, the hot air inside the tubular portion 5 is discharged from the pneumatic tube 29 to be in a depressurized state. This discharge also has the effect of accelerating the cooling of the waste plastic material in the tubular portion 5. Then, the bag body 4 is pressed against the cylindrical portion 5 by the pressure difference from the external atmospheric pressure, and the bottom plate 5b of the cylindrical portion 5 is pushed up. Then, the differential pressure further slides the node portion on the side surface of the tubular portion 5 to telescopically reduce the length. As a result, the container has a significantly reduced internal volume. At the same time, the waste plastic material contained in the tubular portion 5 is compressed by this pressure difference. That is, since the waste plastic material is softened or partly melted as the internal temperature rises, the waste plastic material is easily compressed as the internal volume of the tubular portion 5 changes, and the volume is greatly reduced to form a block. The compression step may be repeated multiple times during heating. The waste plastic material thus compressed is then cooled and becomes a small block-like mass. The obtained waste plastic material lump has a substantially uniform cross-sectional shape, and the subsequent transportation and work are very easy. Further, it is possible to safely and hygienically reduce the volume of waste plastic material by a simple structure and a simple operation at a place where the waste plastic material is generated.

The overall compression method of the waste plastic material according to this embodiment has been described above. However, in the present invention, as described above, the hot air blowing hole 10 and the circulation air hole 60a are further added. , 60b, 6
In order to prevent the softened and melted waste plastic material from entering 0c, the hot air blowing hole 10 is provided with opening closing means, and the air holes 60a, 60b are provided on the outer peripheral side of the bottom plate 5b or on the lower portion of the side surface of the tubular portion 5. Since the technical means of providing the above is taken, this will be described in detail. That is, in the embodiment of FIGS. 1 and 2, the heat-resistant blow-out hole bag body 31 serving as a wind pressure closing means is provided to prevent the softened and melted waste plastic material from entering the hot-air blow-out hole 10 due to compression.
Are prevented by. This bag 31 for blowing holes is
Like the bag body 4, it is an extremely thin film of polybutyl terephthalate (PBT) and is extremely flexible.
Any film may be used as long as it has heat resistance and is flexible. The overall configuration is a tapered cylindrical shape, and the larger one is attached to the hot air blowing hole 10 side. The mounting needs to be tight enough to prevent leakage when air pressure is applied to the inside. When the hot air is blown out, the blowing hole bag body 31 is stretched by the wind pressure, so to speak, it becomes a nozzle shape and is blown out from the small mouth. However, when the inside pressure is reduced and the compression is started by the pressure difference from the atmospheric pressure, air is discharged from the inside of the container, and the flow causes the blow-out bag body 31 to be folded and folded into the hot air blowing holes. It covers 10. When the flow stops, the hot air blowing hole 10 is closed.
This air discharge process is also a compression process, but the waste plastic material softened and melted during the compression process by the blowing hole bag 31 does not enter the hot air blowing hole 10.

Further, in this embodiment, the air hole 6 of the tubular portion 5 is
0a and 60b are provided on the outer peripheral side of the bottom plate 5b and on the lower portion of the side surface of the tubular portion 5 as shown in FIG. Either one can be used. This also prevents the softened and melted waste plastic material from entering the hot air blowing hole 10. That is, the volume of the waste plastic material is reduced in the radial direction and the height direction of the tubular portion 5 with heating,
Since the length of the tubular portion 5 is reduced in the height direction by depressurization, a void remains inside the outer circumferential side of the tubular portion 5, and a cluster of waste plastic material exists only in the center of the bottom plate 5b. In other words, only the central portion of the bottom plate 5b comes to contribute to the compression. Therefore, if an air hole is provided in the center of the bottom plate 5b, the softened and melted waste plastic material will enter the air hole. Therefore, in this embodiment, as a means for avoiding this, the air holes 60a and 60b of the tubular portion 5 are provided on the outer peripheral side of the bottom plate 5b and the tubular portion 5.
It is placed at the bottom of the side.

Next, FIGS. 5 (a), 5 (b) and 5 (c)
The operation of this means will be described below. FIG. 5A shows the flow state of the hot air of this embodiment, and FIG.
5C shows the case where the air hole 60b is provided in the bottom plate 5b up to the center. In FIG. 5C, the air hole 60a is not arranged in the outer peripheral side or the lower portion of the side surface of the cylinder portion 5 in the bottom plate 5b. This is the case where the air holes 60c are provided only in the upper portion. In the case shown in FIG. 5B, a circulating flow is formed on the outer circumference, but the flow of hot air is generally smooth. For this reason, heat exchange is performed relatively efficiently, which is advantageous for compressing and blocking waste plastic material. However, the bottom plate 5b is softened,
The molten waste plastic material gets in, making it difficult to handle the waste plastic material. Next, in the case of FIG. 5C, a large circulating flow is formed in the central portion where the waste plastic material exists, and hot air does not flow directly there. Therefore, the softened and melted waste plastic material does not enter the air holes, but it is extremely inefficient in terms of heat transfer to and from the waste plastic material. However, in the case of this embodiment shown in FIG. 5 (a), the circulating flow formed in the central portion of the tubular portion 5 is small, heat exchange can be efficiently performed, and the softened and melted waste plastic material is used. Does not enter the air holes 60a and 60b. Therefore, it is possible to smoothly take out the waste plastic material and speed up the compression process.

Next, another opening closing means is provided in FIG. 3 (a).
An example will be described. In this embodiment, a plurality of shutter pieces 40, which are slide closing means, are provided with the hot air blowing holes 10 and the surface thereof is narrowed. Each shutter piece 40 is fan-shaped as shown in FIG. As the shutter pieces 40 rotate, the openings of the hot air blowing holes 10 are narrowed to prevent the softened and melted waste plastic material from entering the hot air blowing holes 10. Further description will be given of how this blockage is performed. As shown in FIG. 3B, the shutter piece 40 is rotatably pivotally attached to the pin 44 of the outer ring 42. A plurality of shutter pieces 40 are attached to the outer ring 42 while sequentially overlapping. Inner teeth are formed on the outer ring 42, and the planetary gear 41
Through an inner ring 43 having outer teeth. The inner ring 43 is provided at its center with an opening that completely covers the hot air blowing hole 10. The outer ring 42 is provided with a handle 49 for rotating the outer ring 42 and a long groove 47 for limiting the rotation range. Inside the long groove 47, the lid body 1
The stopper 48 fixed to 1 is inserted. Further, the shutter piece 40 is also formed with an arc-shaped long groove 46, and the guide pin 45 is accommodated therein. Guide pin 4
5 is fixed to the inner ring 43.

The operation of this embodiment will now be described. When the handle 49 is automatically rotated by a manual operation or an operation from the control circuit section 30 at the start of compression, the outer ring 42 is rotated. At the same time, the inner ring 43 rotates in the opposite direction via the planetary gear 41. Then, the fan-shaped shutter piece 40 pivotally attached to the pin 44 also starts to rotate. However, since the guide pin 45 provided on the inner ring 43 guides the arc-shaped long groove 46, a motion of directing the left end of the fan shape toward the center of the opening occurs. When the plurality of shutter pieces 40 simultaneously perform this movement, the shutter pieces 40 perform an operation of narrowing the hot air blowing holes 10. When the shutter piece 40 is rotated in the opposite direction, the shutter piece 40 operates to open the opening. By mechanically sliding and completely closing the shutter piece 40 in this manner, it is possible to prevent the softened and melted waste plastic material from entering the hot air blowing hole 10.

Of course, the positions of the air holes 60a and 60b on the outer peripheral side of the bottom plate 5b and on the lower portion of the side surface of the tubular portion 5 are the same as those in the embodiment shown in FIGS.

Next, the embodiment of FIG. 3C will be described. This embodiment is different from the embodiment of FIG. 3B only in the following points. That is, the shutter piece 51 makes a linear motion rather than a rotary motion to close the opening.
The shutter piece 51 is composed of two pieces, and the edges are matched at the center so that the opening can be closed. The locations of the air holes 60a and 60b on the outer peripheral side of the bottom plate 5b and on the lower portion of the side surface of the tubular portion 5 are as described above.

Further, the embodiment of FIG. 4A using the wind pressure closing means as the opening closing means will be described. This is a slightly heat-resistant rubber plate with radial cuts from the center position. By this notch, several fan-shaped shutter pieces 55 are formed, and the fan-shaped main parts can be opened and closed vertically. In order to facilitate the opening / closing operation, the mounting portion of the fan-shaped shutter piece 55 is formed thin. The fan-shaped shutter piece 55 is attached by fixing the thin portion inside the container on the outer peripheral side of the hot air blowing hole 10. Therefore, when the hot air is sent, the fan-shaped shutter piece 55 is pushed open by the wind pressure, but as the pressure inside the container is reduced, the hot air blowing hole 10 is closed. The softened and melted waste plastic material does not enter the hot air blowing hole 10. Although a slightly thick rubber plate is used in this embodiment, it may be a plate having no flexibility. At this time, the attachment part needs to be a hinge. At the same time, air holes 60a are formed on the outer peripheral side of the bottom plate 5b and on the lower portion of the side surface of the tubular portion 5.
Install 60b.

FIG. 4B shows a combination of two semicircular shutter pieces 56. A hinge is provided on the mounting portion so that the shutter piece 56 can be opened and closed. It is a wind pressure closing means. It is desirable to install a weak spring on the hinge in consideration of the balance with the wind pressure. Like the one shown in FIG. 4 (a), it is pushed open by hot air and can be closed by decompression to cover the hot air blowing hole 10 to prevent softened and melted waste plastic material from entering the hot air blowing hole 10. Is.

According to the embodiments of the present invention described above, the volume of waste plastic material can be safely and hygienically reduced in a place where the waste plastic material is generated, with a simple structure and simple operation. Moreover, it becomes extremely easy to handle after the waste plastic material is made into a block-shaped mass.

[0028]

According to the present invention, the volume of the waste plastic material can be greatly reduced, and the softened and melted waste plastic material enters the opening of the cylindrical portion and solidifies after cooling to close the opening. No more difficulty in removing the waste plastic material after processing.

By arranging the air holes on the outer peripheral side of the bottom plate or on the lower part of the body plate which is the side surface of the container, heat can be effectively exchanged, and the air holes of the waste plastic material generated at the time of compression can be formed with a simple structure. Can be significantly reduced.

Since the opening closing means is driven by the force of air accompanying the decompression, the opening is easily closed with easy handling and a simple structure. Moreover, the opening can be closed quickly. Since it is mechanically slid and closed, it is possible to reliably prevent the softened and melted waste plastic material from entering the air holes.

Further, according to the present invention, the volume of the waste plastic material can be rapidly and significantly reduced, which contributes to space saving of a storage place, a landfill, which is a final treatment facility, and an improvement in post-treatment and transportation efficiency. Greatly contribute to.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing a state during heating of a waste plastic material processing apparatus according to an embodiment of the present invention.

FIG. 2 is a longitudinal cross-sectional view of a main part showing a state after compression processing of a waste plastic material processing apparatus according to an embodiment of the present invention.

FIG. 3 (a) is a diagram showing a closed state of a slide closing means of a waste plastic material processing apparatus according to an embodiment of the present invention. (B) A slide closing means driving device diagram of a waste plastic material processing apparatus according to an embodiment of the present invention. c) A closed state view of the slide closing means of the waste plastic material processing apparatus according to another embodiment of the present invention.

FIG. 4 (a) is a view showing a closed state of a wind pressure closing means of a waste plastic material processing apparatus according to another embodiment of the present invention. (B) A wind pressure closing means of a waste plastic material processing apparatus according to yet another embodiment of the present invention. Closed state diagram

FIG. 5 (a) is a diagram showing a flow state of hot air in a cylindrical portion of the waste plastic material processing apparatus in one embodiment of the present invention. (B) An air hole is provided up to the center of the bottom plate in one embodiment of the present invention. Comparative example diagram showing the flow state of hot air (c) Comparative example diagram showing the flow state of hot air with air holes provided on the upper side surface in one embodiment of the present invention

[Explanation of symbols]

 1 Processing Tank Section 4 Bag Body 5 Cylindrical Section 7 Lid Section 8 Heater 14 Circulating Fan 19 Lock Mechanism 21 Support Member 23 Strut 25 Damper 27 Decompression Pump 31 Blowing Hole Bag Body 40, 51, 55, 56 Shutter Piece 41 Planetary Gear 42 outer ring 43 inner ring 44 pin 45 guide pin 46 arcuate long groove 47 long groove 48 stopper 49 handle 60a, 60b, 60c air hole

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B65F 1/10

Claims (4)

[Claims] 1. An expandable and contractible tube portion which is covered with a bag and hermetically sealed,
The heating means for heating the waste plastic material housed in the tubular portion with hot air, and the depressurizing means for depressurizing the inside of the tubular portion in order to compress the waste plastic material with a pressure difference from the atmospheric pressure, the hot air An apparatus for treating waste plastic material, characterized in that an opening closing means is provided in a hot air blowing hole blown into the inside of the unit. 2. The waste plastic material processing apparatus according to claim 1, wherein an air hole is provided on the outer peripheral side of the bottom plate of the tubular portion or on the lower portion of the body plate which is the side surface of the tubular portion. 3. The waste plastic material processing apparatus according to claim 1, wherein the hole closing means is a wind pressure closing means. 4. The waste plastic material processing apparatus according to claim 1, wherein the hole closing means is a slide closing means.