JPH0553909U - Equipment for reducing volume of plastic waste plastics - Google Patents

Abstract

(57) [Summary] [Purpose] While reducing the volume of foam waste plastic,
A device for reducing the volume of waste plastic foam that can efficiently store and transport recycled materials, excluding the conventional crushing process, by continuously incorporating the process of crushing in a semi-molten state and extracting only crushed particles. The purpose is to provide. [Structure] The foam waste plastic 9 is heat-melted in a furnace,
The melting furnace section 3 for extruding outside the furnace by the extrusion screw 7, and the induction hopper section 12 for introducing the melted material into the pulverizer section 15 while cooling it.
And the screen mesh while cutting the melt with the rotary blade 13.
Cyclone tank section that takes out only the crusher section 15 that presses against 17 and crushes, and the crushed particles 23 that have been suction-sucked by the blower 18.
Composed of 20 and.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention reduces the foamed volume of foamed waste plastic by heat melting, continuously takes it out as crushed particles, supplies it as a recycled material of plastic, and reduces the amount of foamed waste plastic for reuse. The present invention relates to a pulverization processing device.

[0002]

[Prior Art]

 Conventionally, when reusing foam waste plastics such as Styrofoam and polyethylene foam, it is rarely possible to reuse the foam as it is, and once it is reduced in volume and made into blocks, it is sent to the crushing process. It is then crushed into granules, which is then extruded into recycled pellet raw material.

In the above case, there are many problems in the storage management of the volume reduction block and the transportation means. In other words, in general, blocks are not packed in bags, so dust, dirt, and foreign substances are easily mixed in, air pressure cannot be used for transportation, and they are often transported by hand, and the crushing process is inevitable. It is necessary, takes time and space for that, and there is a lot of work loss, which is inefficient. In addition, there is also a method in which the waste plastic foam is roughly crushed in the previous step of volume reduction and further finely crushed, and is immediately processed by an extruder called a so-called ruder to be used as a recycled pellet raw material.

However, in this case, equipment such as a large crusher, a storage tank equipment for crushed and foamed products, a blower to be inserted into the extruder from the tank equipment, a constant quantity feeder such as a control valve, a cooling water tank, a pellet cutting machine, etc. There is a problem that the cost becomes huge and it is not common. Furthermore, the waste plastic foam is roughly crushed, heat-melted, pressed with a screw, passed through a square mesh screen installed in the front of the cylinder, put some noodles in a water tank, withdraw and cut into pellets. Some are used as raw materials.

However, in this case, many noodles are taken out and put in a water tank for continuous cutting. Therefore, if foreign substances are not well removed by washing with water in the pretreatment of the waste plastic, the noodles will be like noodles. There is a problem in that there are many cases where the operation is cut off and continuous operation is not possible.

[0006]

[Problems to be solved by the device]

 The present invention has been made in order to solve the above-mentioned conventional problems, and at the same time reduces the volume of foam waste plastic, simultaneously crushes it in a semi-molten state and removes only the crushed particles. The problem to be solved is to provide an apparatus for reducing the volume of waste plastic foam that can be efficiently integrated into the storage and transport management of recycled raw materials, except for the conventional crushing step after the volume reduction solidification block. It is a thing.

[0007]

[Means for Solving the Problems]

 As a means for solving the above problems, the apparatus for reducing the volume of waste plastic foam of the present invention heat-melts the waste foam plastic that has been input in a furnace, and melts the melt using an extrusion screw. A melting furnace section that extrudes outside the furnace, an induction hopper section that introduces the extruded melt into the crusher section while cooling it with a cooling medium such as a cooling spray, and a semi-solid melt that is introduced into the rotary blade. And a cyclone tank section that cuts with a fixed blade and presses it against a screen mesh to pulverize it, and a cyclone tank section that takes out only the above-mentioned pulverized particles that have been suction-fed by a blower as recycled pellet raw material.

[0008]

[Action]

 In the device for reducing the volume of waste plastic foam that has the above-mentioned structure, the melt of the waste foam plastic whose volume has been reduced by heat melting in the melting furnace section is pushed out by the extrusion screw, and then water is discharged in the induction hopper section. It is cooled to a semi-solid state by a cooling means such as a cooling medium such as air or air, crushed in the crusher section, and only the crushed particles are taken out to the cyclone tank section. Is performed continuously and efficiently.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the arrangement of an embodiment of the apparatus for reducing the volume of waste foam plastics according to the present invention. It comprises a furnace section 3, an induction hopper section 12, a crusher section 15, and a cyclone tank section 20.

First, the foaming material waste plastic 9 introduced into the furnace from the introduction port 4 with the introduction door 5 of the melting furnace section 3 opened is generated by the wet hot air generator 1 outside the furnace and the spray pipe 2 It is heated and melted by the wet hot air sent into the furnace at, but the exhaust gas generated at that time is discharged from the chimney 8. Next, the above-mentioned heat-melted melt is melted at a temperature of, for example, about 200 ° C. by rotating the extrusion screw 7 provided in the lower part of the furnace by the reduction geared motor 6, and the melt outlet and the supply pipe 10 Is extruded and introduced into the induction hopper section 12 outside the furnace. Here, for example, the molten spray extruded in the form of a round bar with a diameter of 20 mm to 100 mm or a flat plate with a size of 20 mm to 100 mm square is cooled from the cooling spray 11 to water or air. A semi-solid melt is formed by a cooling means such as directly injecting a cooling medium such as.

Next, the semi-solid melted material introduced from the induction hopper section 12 into the crusher section 15 is cut by a rotary blade 13 and a fixed blade rotated by a dynamic motor 16 while being cut into a suitable mesh. It is pressed against the clean mesh 17 and crushed into crushed particles 23. As described above, as the crusher device in which the screen mesh 17 is provided around the rotary blade 13 inside the crusher unit 15, a commercially available one can be used.

Further, the crushed particles 23 sucked by the blower 18 connected to the crushed material outlet 14 of the crusher unit 15 are pressure-fed through the pressure-feeding pipe 19 and are introduced into the cyclone tank unit 20. At this time, the compressed air A is discharged from the compressed air exhaust pipe 22 to the upper part, and only the crushed particles 23, that is, the crushing pellets are dropped to the lower part of the cyclone tank section 20 and directly packed in the receiving bag 21 as shown in the drawing. Alternatively, it can be stored in a stock tank and used later if necessary.

[0013]

[Effect of the device]

 According to the apparatus for reducing the volume of crushed foam plastics of the present invention described above, the volume of foam waste plastics is reduced by heat melting, and the waste plastics are continuously taken out as crushed granules and recycled as a raw material As a result, it can be efficiently supplied and is effective as a means of reusing resources and preventing pollution of waste plastics.

Therefore, as in the conventional case, it is possible to eliminate the crushing process after the block for solidifying the volume of the waste plastic foam, and it is possible to efficiently store and transport the recycled material. Further, the device of the present invention is extremely effective in modernizing the recycling business of waste plastics and reducing costs.

[Brief description of drawings]

FIG. 1 is a layout cross-sectional view of an embodiment of a device for reducing and crushing foam waste plastic according to the present invention.

[Explanation of symbols]

 3 Melting furnace part 4 Input port 7 Extrusion screw 9 Foam waste plastic 11 Cooling spray 12 Induction hopper 13 Rotating blade 15 Crusher part 17 Screen mesh 18 Blower 19 Pressure feed pipe 20 Cyclone tank part 21 Receiving bag 23 Crushed particles

Claims (1)

[Scope of utility model registration request] 1. A melting furnace part in which a waste plastic foam is heat-melted in a furnace and the melt is extruded outside the furnace by an extrusion screw, and the extruded melt is cooled and introduced into a grinder part. The induction hopper part, the crusher part that cuts the introduced semi-solid melt with the rotary blade and the fixed blade and presses it against the screen mesh to make crushed particles, and only the above-mentioned crushed particles that have been sucked and pressure-fed by the blower are taken out. A volume reduction crushing device for waste plastic foam that consists of a cyclone tank.