JP2023013887A - Waste plastic compression crushing garbage box - Google Patents

Abstract

To provide a compact waste plastic compression crushing garbage box for reducing a volume at a stage when waste plastic garbage is discharged.SOLUTION: This waste plastic compression crushing garbage box comprises a stainless steel shutter 7 for cooling, shape compressing, and embrittling steps and a crushing step, and is structured to facilitate shape compression in the main cooling step while partially embrittling an input waste plastic container 4 through preliminary cooling and causing partially split destruction 4b, and then opening the shutter 7 to guide the container to the crushing step. The cooling, shape compressing, embrittling, and crushing steps are realized in one chamber 3 (3a).SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a trash can that compresses and pulverizes waste plastics to reduce the trash volume.

In recent years, the amount of waste plastic discharged from general households has increased dramatically, and various recycling methods have been investigated. Since the quality is not stable, only a small part of it is used for material recycling and chemical recycling, and most of it is recycled as fuel, incinerated, or landfilled. This waste plastic is bulky and requires a large amount of storage space not only for general households, but also for the collection, transportation, and intermediate treatment of industrial waste. burden is increasing.

As a volume reduction treatment for waste plastics, a method is known in the prior art in which waste plastics are heated in a heating furnace to such an extent that harmful gases are not generated, and then compression-molded into blocks using a molding press. Further, as a further volume reduction treatment, there is also known a treatment method in which compression-molded waste plastics are frozen in a liquid nitrogen tank and pulverized into small pieces.

Japanese Unexamined Patent Publication No. 3-178390 JP-A-11-10644

For the ever-increasing amount of waste plastic, labor costs, transportation costs, and collection sites (inside homes, stores, garbage storage areas, incineration facilities, etc.) related to waste collection are increasing and becoming tighter. In addition, problems such as energy costs and CO2 emissions when incinerating waste at high temperatures are increasing. In the first step of discharging as garbage, the present invention reduces the volume of garbage by compressing and pulverizing it, and reduces the labor costs, collection and transportation costs, and collection sites related to garbage collection, which is the subsequent process. To provide a trash can capable of reducing storage space and energy cost by pulverizing waste in advance even in processing and utilization of raw materials and fuels.

A first solution for solving the above problems is a container having at least one input part (a lid and an opening) for containing waste plastics, and discharging the waste plastics from the container. and at least one opening, and the storage section has at least one movable wall that forms a part of the storage section and changes the volume of the storage section, and the movable wall moves the movable wall. and at least one opening for discharging the waste plastics from the container, the container forming a part of the container and varying the volume of the container. The waste bin has one movable wall and a movable wall driving section for moving the movable wall.
A second solution is to have a cooling device for cooling the waste plastic.
A third solution is that the cooling device is connected to the storage section through the movable wall.
A fourth solution is that the cooling device is connected to the storage section through the movable wall.
A fifth solution is that the movable wall has a protrusion at the bottom.
A sixth solution is that the movable wall has a passage for cooling the waste plastic, and the container and the cooling device are communicated through the passage.
A seventh solution is to deform or break the waste plastic by pressing the waste plastic with the movable wall.
An eighth solution is to provide the opening with an openable and closable shutter that closes the opening.
A ninth solution is that the shutter is installed below the crushing section.

Since the waste plastic compression crushing garbage box of the present invention finely crushes with a shredder roller, the volume of garbage such as plastic containers can be reduced to 20% or less, garbage storage place, garbage disposal frequency, paid garbage bag cost, garbage collection There is an advantage that it is possible to reduce storage space and energy costs by finely pulverizing in advance in the reduction of related personnel costs, collection and transportation costs, and garbage collection sites, and also in the intermediate treatment of industrial waste and the use of raw materials and fuels.

It is an explanatory view showing a method of implementing the waste plastic compression and crushing trash can.

The cycle is repeated in the steps of "input and storage of waste plastic", "pre-cooling and compression of waste plastic", "main cooling and compression of waste plastic", and "crushing of waste plastic".

A stainless steel shutter 7 is provided in the cooling, shape compression, embrittlement process, and pulverization process, and the waste plastic container 4 put in is partially embrittled and partially cracked and fractured 4b by pre-cooling, while shape compression is performed in the main cooling process. After that, the shutter 7 is opened to lead to the pulverization process, and the processes of cooling, shape compression, embrittlement, and pulverization are realized in one chamber 3 (3a).

FIG. 2 is a cross-sectional view of the apparatus according to the first embodiment of the present invention at the time of waste plastic input and storage. A lid 9 connected to the waste storage chamber 3 is opened and closed, and the waste plastic 4 is thrown into the waste storage chamber 3. At this point, the cooling unit 10 is inactive and the waste storage/compression chamber 3 is at ambient temperature (room temperature) and has only normal waste storage function. The shutter 7 is closed to seal the waste storage/compression chamber 3 and the pulverized waste storage chamber opening 5 in preparation for the next step of compression/cooling. When the waste storage/compression chamber 3 is filled with waste plastics, or at any timing of the user, the operation panel 13 is operated to shift to the next step of cooling and compressing the waste plastics, which is shown in FIG. . The shift to the process of cooling and compressing the waste plastics can be activated at a specified time using the operation panel, or can be remotely controlled by linking with a smart device.

FIG. 3 is a cross-sectional view of the first embodiment of the apparatus of the present invention at the time of cooling and compressing the waste plastic, in which the lid 9 is locked/sealed in the closed state, and the movable compression wall 1 reduces the volume of the compression/cooling chamber 3. start to move in the direction 14. At the same time, the cooling unit is activated, and cold air is released/circulated from the cold air circulation vent 12 provided on the surface of the movable compression wall 1 that contacts the compression/cooling chamber 3 to lower the ambient temperature of the compression/cooling chamber 3 . At this time, the waste plastic 4 is locally cooled/embrittled from the part directly exposed to the cold air, and the waste plastic 4 starts to be partially embrittled/cracked by the external force of the movable compression wall 1, and the shape compression is accelerated. In this process, the waste storage/compression chamber 3 and the crushed waste storage chamber opening 5 are in a sealed state, and the movable wall 1 is always in a seal with the waste bin housing 15 and the lid 1 . In the process of cooling and compressing the waste plastic, the movable wall 1 is always moved in the direction 14 to reduce the volume of the compression/cooling chamber 3, and when the movable wall 1 reaches the compression end point 1a, the process of cooling and compressing the waste plastic ends. , the process automatically shifts to the next waste plastic main cooling and compressing process in FIG. In this process, cooling of the shutter 7 itself is promoted.

FIG. 4 is a cross-sectional view of the first embodiment of the apparatus of the present invention at the time of completion of the main cooling and compression of the waste plastics. The lid 9 is locked/sealed in the closed state, and the movable compression wall 1 is fixed at the compression end position 1a. , the waste storage/compression chamber 3a is at maximum compression. While this state is maintained, the cooling unit 1 is put into full operation for a certain period of time, and cold air is continuously sent from the cold air circulation vent 12 to embrittle the waste plastic 4a. In this process, the shredder opening shielding projection 2 integrally provided at the lower portion of the movable compression wall 1a completely shields the shredder opening 18, and the tip 16 of the shredder opening shielding projection 2 prevents dust from By directly contacting and sealing with the waste bin housing 15 forming part of the storage/compression chamber 3a, it provides better insulation and tightness within the waste storage/compression chamber 3a than the shutter 7, and closes the waste storage/compression chamber. By promoting and stabilizing the temperature drop in 3a, embrittlement of waste plastic 4a is promoted. Moreover, since the shutter 7 is kept closed, the shredder roller 6 is also kept cold. When the time has elapsed for the waste plastic 4a to become sufficiently embrittled, the process automatically shifts to the next step of waste plastic crushing shown in FIG.
It is already known that the embrittlement of waste plastics is generally accelerated by temperature. Table 1 below shows examples of Charpy impact test results for major waste plastics.

FIG. 5 is a cross-sectional view of the apparatus according to the first embodiment of the present invention during pulverization of waste plastics. The lid 9 is locked/sealed closed and the movable compression wall 1 moves through the waste storage/compression chamber 3 in the compression opening direction 17 . At this time, the movable compression wall 1 stops at the point where the tip 16 of the shredder opening shielding projection shape 2 completely opens the shredder opening 18 . In this process, the embrittled waste plastic 4a is thrown into the shredder roller 6. As shown in FIG. At the same timing, after the shutter 7 is wound up, the shredder roller 6 starts driving, and the embrittled waste plastic 4a is pulverized by the shredder roller 6 and stored in the pulverization storage chamber 8. At this time, since the shredder roller 6 itself is kept cold in the preceding process, the low-temperature embrittlement state of the embrittled waste plastic 4a is not damaged by heat transfer, and smooth pulverization is realized. Also during this process, the cooling unit 1 continues to operate to keep the waste storage/compression chamber 3 at a certain low temperature and to maintain the embrittlement of the waste plastic 4a. When the crushing of the waste plastics 4a is completed, the cooling unit 1 stops and the movable compression wall 1 moves further in the direction 17 of releasing the compression. In addition, the shutter 7 is also closed, the lid 9 is unlocked, and the waste plastic is put in and stored in FIG. 2 automatically.

By using a timer switch attached to the housing, it is also possible to compress and pulverize at night when electricity is cheap. In addition, by increasing the capacity of the housing and installing it as a collection box for exclusive containers sold in retail stores, it can be used as a highly efficient recycling circulation system.

1 movable compression wall 1a movable compression wall (compression end point)
2 Shredder opening blocking projection shape (movable compression wall)
3 Garbage storage/compression chamber (for waste plastic storage)
3a waste storage/compression chamber (when waste plastic is compressed)
4 Waste plastic (before compression)
4a waste plastic (after compression)
4b Waste plastic (partially brittle/cracked part)
5 Pulverized waste storage chamber opening 6 Shredder roller 7 Shutter 8 Pulverized waste storage chamber 9 Camber lid 10 Cooling unit 12 Cooling circulation vent 13 Operation panel 14 Compression operation direction of movable compression wall 1 15 Trash box housing 16 Shredder opening shielding protrusion shape tip 17 compression release operation direction 18 of the movable compression wall 1 shredder opening mouth

Implementation method diagram of waste plastic compression and crushing trash bin Waste plastic input and storage process diagram of Example 1 Waste plastic cooling and compression process diagram of Example 1 Waste plastic main cooling compression completion process diagram of Example 1 Waste plastic crushing process diagram of Example 1

Claims (9)

a container having at least one inlet (a lid and an opening) for containing waste plastics; and at least one opening for discharging the waste plastics from the container. has at least one movable wall forming part of said container and for varying the volume of said container, and a movable wall drive for moving said movable wall. 2. The waste bin according to claim 1, further comprising a cooling device for cooling said waste plastic. 3. The trash can according to claim 2, wherein the cooling device is connected to the storage section through the movable wall. 4. A trash box according to claim 1, wherein said movable wall has a protrusion at its lower portion. 5. The movable wall according to claim 1, wherein the movable wall has a passage for cooling the waste plastic, and the container and the cooling device are communicated through the passage. Trash can. 4. The waste bin according to claim 3, wherein the movable wall presses the waste plastic to deform or break the waste plastic. 5. The trash box according to claim 1, wherein said opening is provided with a crushing section for crushing said waste plastic. 8. The trash box according to claim 7, wherein said opening has an openable and closable shutter for closing said opening. 9. The trash can according to claim 8, wherein said shutter is installed below said crushing unit.

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