JP2001252924A - Waste plastic processing equipment - Google Patents

Abstract

(57) Abstract: An object of the present invention is to provide an apparatus for treating waste plastic, which can treat a plastic container with a simple device in a hygienic condition. A crusher for roughly crushing waste plastics 2
And a vibrating conveyor 3 having a transport body 13 for carrying the waste plastic pieces roughly crushed by the crusher 2 and transporting the waste plastic pieces in a predetermined direction, and disposed above the first transport section 13a of the transport body 13. A cleaning water jetting device 4 having a water jetting nozzle 42; and an air jetting device 5 having an air jetting nozzle 51 disposed above the second conveying portion 13b, and a floor surface of each of the conveying portions 13a and 13b. Screen plate 22,2
5 and the screen plate 25 of the second transport unit 13b is installed lower than the screen plate 22 of the first transport unit 13a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus for roughly crushing and washing waste plastics.

[0002]

2. Description of the Related Art The Containers and Packaging Recycling Law, which was enforced in 1997, requires disposal of PET bottles (PET bottles). The target is
Since plastic containers other than PET bottles have been expanded to other plastic containers (hereinafter referred to as other plastic containers), it is necessary to recycle other plastic containers in the same manner.

[0003] However, other plastic containers are used not only for beverages but also for detergents and various foods. To reuse them, washing, crushing, crushing, removing impurities, and removing various types of adhered residues are required for each type of plastic. It is necessary to perform a series of processes such as sorting of the items.

Conventionally, apparatuses for performing such processing are disclosed in, for example, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent Application Publication No. 000-15638, there is a method in which processes such as crushing, washing, removing labels, crushing, and sorting containers are continuously performed.

[0005]

By the way, equipment for continuously performing each processing such as crushing, washing, label removal, crushing, and sorting of the above-mentioned containers becomes very expensive, and the budget scale is small. It is a great financial burden for towns and villages.

[0006] For this reason, it is conceivable to compress and pack in a simple resource recycling facility provided in municipalities, such as a PET bottle, and have the recycler pick it up. However, since other plastic containers are filled with various objects, if they are compressed and packed in a state in which they are attached, there is a problem that residues in the containers come out and emit a bad smell, which is not preferable for hygiene.

Accordingly, an object of the present invention is to provide an apparatus for treating waste plastics, which can treat plastic containers in a simple device in a sanitary condition.

[0008]

In order to solve the above-mentioned problems, a waste plastics treatment apparatus of the present invention comprises a crusher for roughly crushing waste plastics and a waste plastic piece roughly crushed by the crusher. A vibrating conveyor having a transport body that is placed and transported in a predetermined direction, and includes a washing water injection device having a water injection nozzle disposed above the transport body, and on a transport floor surface of the transport body, A plurality of drainage openings are formed.

According to this configuration, the waste plastic material is
After being roughly crushed by a crusher, while being conveyed while being vibrated by a vibrating conveyor, water is sprayed from a washing water spraying device arranged above to wash away residues adhering to waste plastic pieces and from an air spraying device. Since air is blown to remove water droplets adhering to the waste plastic pieces, the waste plastic pieces can be cleaned, and therefore, packing work in a later process can be performed without any trouble.

In the above-mentioned waste plastics treatment apparatus, an air injection nozzle is disposed downstream of the washing water injection device of the carrier. According to this configuration, the washed waste plastic pieces are dewatered. Can be.

Further, the downstream side of the transport floor surface of the transport body in each of the waste plastic material processing apparatuses is lower in height by a predetermined height than the upstream side. According to this configuration, air is blown on the downstream side. In this case, the waste plastic pieces can be prevented from returning to the upstream side.

Further, a water storage tank is provided for collecting the cleaning water flowing from the carrier in each of the waste plastic material treatment apparatuses, and the water accumulated in the water storage tank is supplied to the cleaning water injection nozzle. , Can save washing water.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a waste plastic processing apparatus according to an embodiment of the present invention will be described with reference to FIGS.

This waste plastic material processing apparatus includes a two-shaft crusher 2 which receives waste plastic material from a carry-in conveyor 1 and roughly crushes the waste plastic material, and converts the waste plastic pieces crushed by the crusher 2 in a predetermined direction. Conveyor 3 to be conveyed to
And a washing water injection device 4 arranged on the upstream side of the vibration conveyor 3 and an air injection device 5 similarly arranged on the downstream side of the vibration conveyor 3.

The vibrating conveyor 3 comprises a gantry 11, a vibrator 12 provided on the gantry 11, and a carrier 13 supported by the vibrator 12. The transport body 13 includes an upstream first transport section 13 on which the washing water is injected.
a and a second transport portion 13b on the downstream side, which extends from a downstream end of the first transport portion 13a and has a stepped portion H with a predetermined height at a lower position and from which air is injected. Have been.

The first transfer section 13a is formed in a box shape having an open upper surface and an end face on the downstream side, and a pair of left and right side plates 21 and a transfer floor surface formed by being stretched between these both side plates 21. A screen plate 22 and a first water recovery receiving box 23 having a hopper-shaped cross section extending below both side plates 21 are formed.

The second transport section 13b includes a pair of left and right side plates 24, a screen plate 25 stretched between the both side plates 24, and a second hopper-shaped section extending below the both side plates 24. And a receiving box 26 for water recovery. The second water collection tray 26 collects water droplets scattered by the air blown from the air injection device 5, and discharges the internal air from an exhaust pipe (a flexible pipe that is provided on both sides). 27) and an exhaust pipe 28 connected to the exhaust pipe 27 to be discharged to the atmosphere or guided to a dust collector as required.

The bottom wall of the first water collection box 23 is inclined downward so that the water injected from the water injection device 4 flows to the downstream side, and the second water collection container 23 has a bottom wall. Box 2
Also in 6, since a water drop adhering to the waste plastic piece falls and accumulates, a water draining nozzle 30 provided with an on-off valve 29 is provided at the bottom thereof.

The screen plates 22 and 25 provided in each of the transport sections 13a and 13b are constituted by punching metal having a small hole diameter, which is a drain opening, or sieve bars arranged in a large number at predetermined intervals. Is used. Of course, the interval between each bar is a drain opening, and when this sieve bar is used, for example, the cross-sectional shape of each bar is a triangular shape with a sharp upper end.

As described above, the first transport unit 1
Although it has been described that the second transport unit 13b is provided at a predetermined height lower than the third transport unit 3a, more precisely, the second transport unit 1b is provided with respect to the screen plate 22 of the first transport unit 13a.
The screen plate 25 of 3b is provided low.

The vibrator 12 includes a compression coil spring 31 disposed at front, rear, left and right positions for supporting the first transport unit 13a on the gantry 11, and a pair of left and right bearings 32 on the gantry 11.
And a motor 37 for rotating the rotating shaft 33 via a pair of pulleys 34, 35 and a belt 36 wound between the pulleys 34, 35. A pair of rotary plates 38 provided at both ends of the rotary shaft 33, and connecting rods 39 connecting the eccentric positions of the rotary plates 38 and both side portions of the first transport unit 13a. I have.

Therefore, if the rotating plate 38 is rotated by the electric motor 37 via the rotating shaft 33, the connecting rod 3
9, the first transport unit 13a and the second transport unit 13b extended therefrom vibrate in the direction of the arrow a, and each transport unit 13a
The waste plastic pieces placed on the upper surfaces of the screen plates 22 and 25 a and 13b are conveyed toward the downstream side while vibrating.

Below the second transport section 13b, there is provided a water storage tank 41 for recovering the washing water jetted by the first transport section 13a and flowing down in the first water recovery receiving box 23. In addition, the water from the water draining nozzle 30 provided in the second water collecting tray 26 is also collected in the water storage tank 41.

The washing water injection device 4 includes a first transport unit 13
A plurality (for example, 3 × 2 rows = 6) of water injection nozzles 4 arranged at predetermined positions and at predetermined intervals above “a”
2 and a water pump 43 provided on the way
And a water supply pipe 44 for circulating and supplying the water in each of the water injection nozzles 42. In the drawing, reference numeral 45 denotes a filter provided at an outlet of the water storage tank 41, and a water supply pipe (not shown) is connected to the water supply pipe 43 or the water storage tank 41.

The air injection device 5 includes a second conveying unit 13b
(For example, 3 × 1 row = 3) air injection nozzles 51 arranged at predetermined positions and at predetermined intervals above the
And an air compressor 53 that supplies compressed air to each of the air injection nozzles 51 via an air supply pipe 52.

Further, the waste plastic pieces discharged from the second transport section 13b are guided onto the discharge conveyor 7 by the discharge chute 6. Of course, the second transport section 13b and the discharge chute 6 are separated (edge-cut).

The carrier 13 and the water storage tank 41
Is entirely covered with a cover body 8 so that water, dust and the like are not scattered. Next, waste plastics,
That is, a flow of a recycling process of a waste plastic container including a plastic container other than a PET bottle will be described.

First, the waste plastic container put into the crusher 2 from the carry-in conveyor 1 is roughly crushed, and
3a is dropped on the screen plate 22. The dropped waste plastic piece moves on the screen plate 22 vibrated by the vibrator 12 in a predetermined direction, and is washed by water jetted from the water jet nozzle 42 on the way.

After that, after dropping and moving onto the screen plate 25 of the second transport section 13b, the water droplets are removed and dehydrated by the air blown from the air injection nozzles 51, and then through the discharge chute 6. And is guided onto the carry-out conveyor 7.

In the second transport section 13b, air for dewatering is blown. Since the screen plate 25 is lower than the screen plate 22 on the first transport section 13a side, waste air is blown off by the air. Is prevented from returning to the first transport unit 13a side.

The washed waste plastic pieces guided onto the carry-out conveyor 7 are transported to a packing step and packed. By the way, the washing water injected by the first transport unit 13a is collected in the water storage tank 41 via the first water collection receiving box 23, and then supplied to the water injection nozzle 42 from the water supply pipe 44 to circulate. used. Further, in the second transport unit 13b, water drops adhering to the waste plastic pieces are removed by blowing air, and the water drops are removed by opening the on-off valve 29 to drain the water from the water collecting nozzle 26 of the second water collecting receiving box 26. 30
From the water storage tank 41. Further, the second transport unit 1
The air blown in 3b is supplied to the second water collection receiving box 26.
Is discharged to the atmosphere, for example, through an exhaust pipe 28 connected to the air.

As described above, after the waste plastic container is roughly crushed by the biaxial crusher 2, water is conveyed while being vibrated by the vibrating conveyor 3 from the water jet nozzle 42 disposed above. The waste plastic pieces are flushed to remove the residue in the container and air is blown from the air injection nozzle 51 to remove water droplets adhering to the waste plastic pieces, so that the waste plastic pieces are cleaned. Therefore, it is possible to perform the packing work in the post-process without any trouble.

That is, unlike the prior art, without using a process such as crushing, washing, removing a label, crushing, and sorting a container, a simple device can be used in a hygienic condition.
Processing for recycling in waste plastic containers other than PET bottles can be performed.

In the above-described embodiment, the exhaust pipes 27 for guiding the air in the second water recovery container 26 to the atmosphere or the dust collector are provided on both sides of the second water recovery container 26. However, as shown by the broken line in FIG.

[0035]

As described above, according to the configuration of the waste plastic material processing apparatus of the present invention, after the waste plastic material is roughly crushed by the crusher, the waste plastic material is arranged upward while being conveyed while being vibrated by the vibrating conveyor. Water was sprayed from the cleaning water spray device that was washed to remove residues adhering to the waste plastic pieces, and air was blown from the air spray device to remove water droplets that adhered to the waste plastic pieces. The plastic pieces can be cleaned, so that the packing work in the subsequent process can be performed in a sanitary condition.

That is, unlike the conventional method, without using a process such as crushing, washing, removing the label, pulverizing, and sorting the container, a simple device can be used in a hygienic condition.
Processing for recycling in waste plastic containers other than PET bottles can be performed.

Further, since the air injection nozzle is disposed downstream of the cleaning water injection device of the carrier, the washed waste plastic pieces can be dewatered. Further, since the downstream side of the transport floor surface of the transport body is lower than the upstream side by a predetermined height, it is possible to prevent the waste plastic pieces from returning to the upstream side even when air is blown on the downstream side. it can.

Further, since the washing water flowing out of the carrier is recovered in the water storage tank and the water accumulated in the water storage tank is supplied to the washing water injection nozzle, the washing water can be saved. Running costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a waste plastic material processing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

 2 Crusher 3 Vibration Conveyor 4 Cleaning Water Injector 5 Air Injector 12 Vibrator 13 Conveyor 13a First Conveyor 13b Second Conveyor 22 Screen Plate 23 Water Recovery Crate 25 Screen Plate 26 Second Water Recovery Receiver Box 30 Draining nozzle 41 Water reservoir 42 Water injection nozzle 43 Water pump 44 Water supply pipe 51 Air injection nozzle 52 Air supply pipe 53 Air compressor

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B08B 7/04 B08B 7/04 Z F-term (Reference) 3B116 AA46 AB14 BB22 BB33 CC03 CD22 3B201 AA46 AB14 BB22 BB33 BB92 BC05 CB01 CB25 CC12 CD11 CD33 4D065 CA05 EA08 EB14 ED12 ED39 4F301 AA25 BA12 BA21 BE29 BF12 BF27 BG22

Claims (4)

[Claims] A crusher for roughly crushing waste plastics,
The crusher includes a vibrating conveyer having a carrier for carrying the waste plastic pieces roughly crushed by the crusher and transporting the same in a predetermined direction, and a washing water jetting device having a water jet nozzle disposed above the conveying body. And a plurality of drainage openings are formed in the transfer floor of the transfer body. 2. An apparatus for treating waste plastic according to claim 1, further comprising an air injection device having an air injection nozzle disposed above and downstream of the cleaning water injection device of the carrier. 3. The apparatus according to claim 2, wherein the downstream side of the transport floor surface of the transport body is lower than the upstream side by a predetermined height.
A waste plastic material treatment apparatus according to item 1. 4. A water tank for recovering washing water flowing out of a carrier is provided, and water accumulated in the water tank is supplied to a washing water injection nozzle.
4. The waste plastics disposal apparatus according to any one of claims 1 to 3.