JPH0734653Y2 - Waste plastic processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a waste plastic processing apparatus for heating and melting waste plastic and cooling and solidifying it, and particularly to an apparatus suitable for processing waste expanded polystyrene. .

[Conventional technology]

A waste plastic processing device of this type is known from Japanese Patent Publication No. 63-36924. In this case, the waste plastic is charged from the upper side, melted in the melting furnace, received in the lower container, and taken out from the side together with the container. A hot air generator including an oil burner and a blower is connected and arranged on the side of the melting furnace.

[Problems to be solved by the device]

In the case of this conventional waste plastic processing device, since the arrangement structure of the waste plastic inlet, the hot air generator, and the container inlet / outlet door is fixed, the method of introducing the waste plastic, the mounting position of the hot air generator, and the container It is impossible to change the access direction. Therefore, the waste plastic processing device may not be installed due to restrictions such as the installation space, the shape of the building, and the approaching direction of the truck loaded with the waste plastic.

The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to arbitrarily set the waste plastic feeding direction, the hot air generator mounting position, or the container loading / unloading door mounting position depending on the installation conditions. It is to provide a waste plastic processing device that can be selected.

[Means for Solving the Problems]

In order to achieve this object, the waste plastic processing device according to the present invention melts and reduces the volume of waste plastic by a hot air, which is connected to a supply part for charging and preheating the waste plastic and a lower part of the supply part. A melting section and a cooling section connected to the lower side of the melting section for cooling by receiving the molten waste plastic; and the supply section, the melting section and at least one other section of the cooling section. It is characterized in that it is divided and can be mounted in different directions.

[Action]

In the waste plastic processing apparatus of the present invention, at least one of the supply unit, the melting unit, and the cooling unit is divided from the other unit, so that at least one of the waste plastic input port, the hot air generator, and the container loading / unloading door ( The mounting direction) can be changed.

〔Example〕

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a waste plastic processing apparatus according to an embodiment of the present invention. This waste plastic processing device is essentially composed of a crusher 1, a melter 2 and a hot air generator 3.

The crusher 1 has a container 4 whose upper side is open, and inside the container 4, a cutter composed of a rotary blade 5 and a fixed blade 6 is arranged. The rotary blade 5 is fixed to a horizontal shaft 8 which is rotatably driven by a motor 7 and which is supported on the side wall of the container 4. Four rotary blades 5 are provided in each vertical plane (see FIG. 2), and a large number of rotary blades 5 are arranged at regular intervals in the longitudinal direction of the shaft 8. A fixed blade 6 is horizontally fixed to the side wall of the container 4 below the shaft 8 and in parallel with the shaft 8. The fixed blade 6 has a notch at a position corresponding to the rotary blade 5. Therefore, the rotary blade 5 passes through this notch during rotation, and cuts the waste plastic with the fixed blade 6. The width of the notch is slightly larger than the width of the rotary blade 5.

As shown in FIG. 2, the bottom region 4a of the container 4 is inclined inward, and a horizontal feed screw conveyor 9 is horizontally arranged at the bottom thereof. This lateral feed screw conveyor 9 is a motor
The waste plastic rotatably driven by 10 and crushed by the cutters 5 and 6 is conveyed toward the outlet 11 of the container 4. This exit 11 has a vertical feed screw conveyor device 12
The vertical cylindrical body 13 of is connected. The vertical feed screw conveyor 14 of the vertical feed screw conveyor device 12 has a motor 15
Is driven to rotate in the vertical cylindrical body 13 to convey the waste plastic upward. Vertical feed screw conveyor device 12
The waste plastic conveyed to the upper end of is melted through the chute 16 which is connected to the upper end of the vertical cylindrical body 13 and inclines downward.

The melting machine 2 is substantially composed of a supply section 17, a melting section 18 and a cooling section.
It consists of 19. The horizontal walls of the outer walls 17a, 18a, 19a of the supply unit 17, the melting unit 18, and the cooling unit 19 are quadrangular in the embodiment, but may be circular. Outer walls 17a, 18a,
For 19a, by tightening the flange with a bolt,
Fixed to each other.

As described above, the melting machine 2 is provided with the supplying unit 17, the melting unit 18, and the cooling unit 19.
Since it is divided into two parts and bolted to each other, the supply part 17, the melting part 18 and the cooling part 19 can be attached to each other in arbitrary directions. That is, the supply unit 17, the melting unit 18, and the cooling unit 19 can be relatively rotated around the longitudinal center axis of the melting machine 2 and attached in any direction (outer wall).
If the horizontal cross section of 17a, 18a, 19a is square, install 9
It can be offset by 0 °, 180 ° if it is rectangular, and by a predetermined angle depending on the bolt spacing if it is circular).

The supply unit 17 has a function of charging and preheating waste plastic and discharging exhaust gas. Therefore, the supply part 17 is provided with an opening (waste plastic input port) 20 for inserting the chute 16, a central preheating chamber 21, and an exhaust chamber 23 connected to an exhaust blower 22. The waste plastic input port
20 is formed on the upper wall portion of the outer wall 17a formed obliquely. The exhaust chamber 23 is formed by an inner surface of the outer wall 17a, a vertical plate 23a attached to the inner surface, and a plate 23b extending obliquely upward.

A melting section 18 is provided below the supply section 17. The melting section 18 is equipped with a funnel-shaped melting furnace 24 that shrinks downward in order to melt the waste plastic and reduce its volume.
A large number of hot air inlets 25 are formed in the melting furnace 24. Regarding the width of each of the hot air inlets 25, the hot air inlet on the upper side is wide and the width is narrower toward the lower side. Each hot air inlet
Immediately above 25, a hot air inlet cover plate 26 is formed so as to form an acute angle with the inner surface of the melting furnace 24.

A hot air retention chamber 27 is formed between the melting furnace 23 and the outer wall 18a, and this hot air retention chamber is connected to the hot air generator 3 via a connection pipe 28. The hot air generator 3 includes a burner 29 and a blower 30.

The hot air generated by the hot air generator 3 is connected pipe 28, hot air retention chamber 27
And it is introduced into the funnel-shaped melting furnace 24 through the hot air inlet 25.

At the lower opening of the melting furnace 24, a rod-shaped stopper 31 for holding unmelted waste plastic pieces so as not to drop is attached. As shown in FIGS. 1 and 3, the stopper 31 extends radially inward from the lower end of the melting furnace 24 toward the inside.

Below the melting part 18, a cooling part 19 for cooling and solidifying the melted waste plastic is provided. The cooling unit 19 includes a container 32 for receiving the waste plastic melted and dropped in the melting unit 18, and a container loading / unloading door 33 (shown by a chain double-dashed line in FIG. 1) for removing the container. .

Next, a method of using the waste plastic processing apparatus having the above structure will be described. First, waste plastic P such as Styrofoam, polyethylene, polyvinyl chloride, polypropylene, etc. is put into the container 4 of the crusher 1, and the rotary blade 5 and the fixing 6 are fixed.
Crush by. The roughly crushed waste plastic pieces fall to the bottom of the container 4, and are conveyed by the horizontal feed screw conveyor 9 through the outlet 11 to the vertical feed screw conveyor device 12. The waste plastic piece is further conveyed upward by the vertical feed screw conveyor device 12 and introduced into the melting machine 2 via the chute 16.

Waste plastic pieces are deposited in the melting machine 2 and supplied to the supply section 17
Is preheated inside, and hot air is generated in the melting section 18 (the temperature of this hot air is about 8% if the waste plastic is Styrofoam).
It is 300 ° C. Decomposes and gives off a foul odor above 320 ° C. Also, it ignites at about 500 ° C) and is melted by heating. At that time, the hot air reaches the inside of the melting furnace 24 from the hot air generator 3 through the connecting pipe 28, the hot air retention chamber 27 and the hot air inlet 25.
Therefore, the waste plastic pieces are directly heated by the hot air and indirectly heated by the heat transmitted from the hot air retention chamber 27 through the wall of the melting furnace 24. The melted waste plastic falls into the container 32. Since the unmelted waste plastic piece is supported by the stopper 31,
It does not fall until it melts. Further, the generated exhaust gas is exhausted from the upper exhaust chamber 23 by the exhaust blower 22.

The molten waste plastic collected in the container 32 is solidified by natural cooling and taken out from the container entrance / exit door 33. By the above melting and cooling and solidification, the volume of the waste plastic is reduced to about 1/10.

In the waste plastic processing device, the supply part 17, the melting part 18, and the cooling part 19 are formed separately from each other, and the parts can be mounted in different directions.
The relative directions of the waste plastic inlet 20, the hot air generator 3, and the container inlet / outlet door 33 can be changed. Therefore, the waste plastic processing apparatus can be installed according to the installation space, the shape of the building, the approaching direction of the truck loaded with the waste plastic, and the like.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. For example, the supply unit 17
It is also possible to divide only the other parts 18 and 19 so that they can be mounted in different directions.
May be divided with respect to the cooling unit 19 so that it can be attached in different directions.

Further, a mounting hole 34 of the hot air generator 3 for the melting portion 18,
It is possible to form a plurality of mounting openings (door openings) for the container loading / unloading door 33. This number is arbitrary as long as it is plural. FIG. 1 shows an example in which two mounting holes 34 are formed on the left and right. In this way, the mounting holes 34 of the hot air generator 3
By forming a plurality of mounting openings for the container inlet / outlet 33, the mounting direction of the hot air generator 3 and the container inlet / outlet door 33, and by extension, the waste plastic inlet 20, the hot air generator 3 and the container inlet / outlet door 33. You can change the relative orientation of. Note that the hot air generator 3 is not attached (that is, not used) to the mounting hole 34 (the mounting hole on the left side in the example of FIG. 1).
Is blocked with a board. In addition, the door for entering and exiting unused containers
The mounting opening of 33 may be closed with a plate, or a door may be mounted and locked.

[Effect of device]

As described above, the waste plastic processing apparatus of the present invention can change the orientation of at least one of the waste plastic inlet, the hot air generator, and the container inlet / outlet door.

Therefore, depending on the installation location,
Since the mounting position of the hot air generator or the mounting position of the container inlet / outlet door can be arbitrarily selected, it can be installed at various installation locations.

[Brief description of drawings]

1 is a longitudinal sectional view showing a waste plastic processing apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of the crusher of FIG. 1, and FIG. 3 is a stopper of FIG. It is the figure which looked at from above. 1 ... Crusher, 2 ... Melting machine, 3 ... Hot air generator, 4 ...
… Vessel of coarse crusher, 4a …… Bottom area of vessel 4, 5 …… Rotating blade, 6 …… Fixed blade, 7 …… Motor, 8 …… Axis, 9 …… Side feed screw conveyor, 10 …… Motor, 11 …… Exit,
12 …… Vertical feed screw conveyor device, 13 …… Vertical cylinder, 14 …… Vertical feed screw conveyor device, 15 …… Motor, 16 …… Chute, 17 …… Supply section, 17a …… Supply section outer wall, 18 ...... Melting section, 18a …… Melting section outer wall, 19 …… Cooling section, 19a …… Cooling section outer wall, 20 …… Waste plastic inlet, 21 …… Preheating chamber, 22 …… Exhaust blower, 23 ...... Exhaust chamber, 23a ...... Vertical plate of exhaust chamber, 23b ...... Oblique plate of exhaust chamber, 24 ...... Melting furnace, 25 ...... Hot air inlet, 26 ...... Hot air inlet cover plate, 27 ...... Hot air retention chamber, 28 …… connecting pipe, 29 …… burner, 30 …… blower, 31 …… stopper, 32 …… container,
33 …… Container access door, 34 …… Hot air generator mounting hole, P
...... Waste plastic

Claims (1)

[Scope of utility model registration request] 1. A supply section for charging and preheating waste plastic, a melting section connected to the lower side of the supply section for melting and reducing the volume of waste plastic by hot air, and a lower side of the melting section. And a cooling unit for receiving and cooling the molten waste plastic, wherein at least one of the supply unit, the melting unit and the cooling unit is divided from the other unit so that they can be mounted in different directions. Waste plastic processing equipment characterized by