KR20020090281A - Method for separating PVC, copper and synthetic rubber from crushed and wasted cables and apparatus therefor - Google Patents

Abstract

PURPOSE: A method and an apparatus for sorting PVC, copper, and synthetic rubber from an unusable electric wire are provided to increase a recycling rate of resources by sorting effectively PVC, copper, and synthetic rubber. CONSTITUTION: Fragments of unusable electric wire are inputted into a hopper(1). The fragments of unusable electric wire are transferred to the first separative water tank(3) by the first conveyer device(2). The light materials such as PP or PE are separated from the heavy materials such as PVC, copper, and synthetic rubber. The light materials such as PP or PE are transferred to a separative tank(5). The water is supplied to the first separative water tank(3) through a water supply tube(4). The heavy materials such as PVC, copper, and synthetic rubber are transferred to a separator(6). The water is supplied to the separator(6) through a water supply tube(7). The heavy materials such as PVC, copper, and synthetic rubber are separated by using the flow of water. The light material such as PVC is transferred into the second separative water tank(8). A plurality of water-purifier tanks(9) are used for purifying the water drained from the second separative water tank(8). The PVC is transferred to the second conveyer device. The alien substances are removed from the PVC by using water supplied from a water supply tube(12). The alien substances are transferred to a foul water tank(13). The clean PVC is transferred to a storage tank(14). The clean PVC is transferred from the storage tank(14) to a burlap bag(16) by a screw conveyer(15).

Description

Method and separating PVC, copper and synthetic rubber from crushed and wasted cables and apparatus therefor}

The present invention provides a more efficient separation and sorting of recyclable copper, PVC, synthetic rubber, and other powders from finely shredded waste wires. And a method and apparatus for sorting PVC and copper and synthetic rubber from the same.

The demand for electric wires due to the development of the industry is used in various fields such as the electric, telecommunication and electronic industries, and the types thereof are also various. In addition, as these wires are widely used, the amount of generated waste wires increases at the same time, and much effort and time are required for the disposal of waste wires, and at present, there is no systematic system for collecting waste wires.

Thus, until now, it is only collected to obtain economic benefit mainly by individual, junk or business place, and the collected electric wire is used to separate only copper (copper), which has economic value, from the PVC coating and reuse it, or partially discard it. In reality, especially if it is just discarded, since it is made of copper or PVC, it does not decay well after a long time, which causes serious environmental pollution.

In general, as a means for regenerating or separating the waste wires conventionally implemented, a means for separating copper wires by incineration of the waste wires as it is and then extracting only copper wires, or by crimping with a waste wire pressure roller to peel off the PVC coating.

However, the copper extraction method by incineration has a big problem that dioxin, a carcinogen due to incineration of PVC, is discharged into the atmosphere, causing a great impact on the environment. Currently, its use is almost limited, and copper separation using a pressure roller is performed. In the case of the apparatus, the separation of the stranded wire is almost impossible, and the separation of the copper wire and the resin is difficult and the separation process is complicated.

In addition to the above-described separation method, Korean Utility Model Publication No. 84-7854 discloses a waste wire separation device for separating PVC by secondary heating and pressing through an extrusion hole in a molten state.

In addition, Korean Utility Model Publication No. 99-24571 discloses a waste wire crushing apparatus for obtaining pure copper only from waste wires containing jelly.

In addition, Korean Utility Model Publication No. 2000-1418 incorporates a cylinder containing a waste wire into a heating cylinder embedded in a kiln and indirectly heats it with the heat of a circulating waste incinerator, gradually pyrolyzes it, and carbonizes it (charcoal). Disclosed is a copper wire take-out apparatus for solving the environmental pollution problem caused by incineration of a waste wire using a conventional direct heat.

In addition, Korean Patent Publication No. 2001-2443 discloses that copper is removed from the waste wire by burning and removing the coating of the waste wire by pyrolysis and melting in the pyrolysis furnace, and burning the residues introduced into the pyrolysis furnace from the combustion furnace. Each device is disclosed.

However, the above-mentioned conventional designs are all proposed to focus on simply extracting or separating copper from the waste wires, and thus, recyclable materials such as PVC (polyvinyl chloride resin), PP (polypropylene), PE (polyethylene), etc. It is unexpected to separate them into reusable states.

Therefore, conventionally, since only copper is separated and extracted from the waste wires, forks and other methods for facilitating the separation of copper are also matched to this, so the separation of high recycled PVC is naturally neglected and mostly incinerated or melted and discarded. Even if the PVC is separated, most of the rubber is mixed together, making it impossible to melt.

In addition, the reason for neglecting the conventional recycling of PVC is to completely remove the rubber and various impurities contained in the recycling of PVC, and there are no devices for separating it separately. On the other hand, the economic benefits from this are much less than the economic benefits from extracting copper.

However, in recent years, efforts have been made to obtain the economic value obtained only from the conventional copper by double-selecting them so that copper and PVC can be simultaneously recycled from waste wires. However, in order to produce recycled products using PVC, it is very important to reliably separate PVC and synthetic rubber having different melting points. Because PVC, PP, PE, etc. have a low melting point (about 170 ℃), synthetic rubber has a very high melting point (about 700 ℃). When PVC is melted to produce recycled products, synthetic rubber that is not melted is mixed. This causes bubbles in the molded resin product itself and loses the bonding force, which in turn results in a deterioration of the quality of the product, making the rehabilitation of PVC impossible.

Therefore, in order to increase the recycling rate of the above-mentioned PVC, PVC and synthetic rubber are separated one by one mostly through manual labor, but this is the biggest problem in that the productivity is significantly lowered and the work efficiency is very low even for the skilled person due to the limitation of the work.

In addition, the waste wires crushed by using the specific gravity difference of PVC and copper were poured into a plurality of tanks with stirring fans to sequentially overflow the synthetic resin and copper, but this structure also does not separate PVC and rubber. It is used only as a device for

On the other hand, in addition to the above-mentioned method, there is a device in which heavy ones are collected in the center center and relatively light ones are distributed outward by using a stirring fan installed in the stirring tank, but in this case, PVC is overflowed due to weakened flotation of the stirring fan. Since the fine separation of the rubber is not made in the prior art, it was impossible to finely separate the PVC and synthetic rubber using any device.

In addition, according to Korean Patent Publication No. 97-10049, by dipping PVC into electric insulating oil heated to a predetermined temperature, softening PVC, and then applying the impact by rotational force to separate PVC and copper, but this is also applied to electrical insulating oil. It is simply to soften PVC to separate copper, so that the separation of synthetic rubber is still not possible.

The present invention has been made in view of the above-mentioned problems associated with the separation of the conventional waste wire, the object of the present invention is expensive copper and PVC, which is recycled resources from the waste wire that is primarily crushed through a separate shredder or shredder and Efficiently and efficiently sorting synthetic rubber and impurities, copper and copper are recycled into PVC, which increases the reuse rate of waste wires and increases economic benefits. And to provide a method and apparatus for sorting synthetic rubber.

Another object of the present invention is to separate and separate the PVC that was just discarded due to the disadvantages of synthetic rubber into a resource suitable for the production of recycled products to reduce the damage of global environmental pollution, and to obtain foreign currency through the export of materials The aim is to provide a method and apparatus for sorting PVC, copper and synthetic rubber from broken wires that have become a high value-added industry that can contribute to national economic development.

1 is an overall schematic view showing a process for sorting recyclable PVC, copper and rubber, etc. from the waste wires in the crushed state according to the present invention,

2 is an excerpt perspective view of a sorter according to the present invention;

Figure 3 is an excerpt side cross-sectional view of a selector according to the present invention.

※ Code explanation about main part of drawing ※

1: Hopper 2: First Conveyor

3: first separation tank 4, 7, 12: water supply pipe

5: Separator 6: Separator

8: 2nd separation tank 9: purification tank

11: 1st conveyor device 14: PVC storage container

15: Screw Conveyor 16: Packaging Bag

61: case 62: lattice partition

63: compartment

The characteristics of the screening method of the present invention for achieving the above object, the heavy wire and PVC and the composite of the waste wire conveyed to the first separation tank through the first conveyor device to the waste wire in the crushed state into the hopper The rubber is allowed to sink, and the light weight PP and PE are separated by a separate separating tank, and the primary separation material in the first separation tank is pumped and supplied to the sorting unit where water is supplied to the rigid body. Is gradually caught in each partition groove is installed in a grid-shaped partition, and at the same time PVC is floated to the second separation tank by hydraulic power to be separated into secondary, and the second conveyor device to the PVC stored in the secondary separation tank again After removing the impurities by washing water by transporting them into the furnace, the PVC with the impurities removed is finally transferred to the packing bag by using a screw conveyor. Will the yeoseo.

In addition, a feature of the sorting device according to the invention, the first conveyor device for transporting the hopper and the closed wire in the crushed state; A first separation tank to which water is supplied to maintain a constant water level so as to first separate the crushed pieces carried by the first conveyor apparatus from heavy copper, synthetic rubber and PVC with light PP and PE; A separator having a partition groove formed by a lattice partition to separate the copper, synthetic rubber and PVC of the primary separation pumped from the first separation tank by hydraulic power; A second separation tank in which only the secondary PVC separated through the separator is discharged and stored; A second conveyor device for forcibly pumping the PVC stored in the first separation tank to remove and transport impurities again by washing water, and a screw conveyor for removing and transporting the pure PVC from which the impurities are removed from the storage container to be transported and stored in a packing bag. It consists of.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a process diagram for separating recycled PVC or expensive copper and synthetic rubber from a broken wire in accordance with the present invention, with reference to this state of separating PVC or copper and synthetic rubber Explain.

As shown in the present invention, in order to achieve the object, first, the waste wire is crushed very finely using a separate crusher or grinder not shown. At this time, since the shredded pieces of the waste wire are broken, PVC, copper, synthetic rubber, and other impurities, which are components of the waste wire, are broken to the extent that they can be separated from each other when passed through a separate separator.

The broken wire wire crushed in this way is put into the hopper (1). Then, the waste wire crushing pieces are carried on the conveyor belt of the inclined first conveyor device 2 which is connected to the lower end of the hopper 1 and driven.

Waste wire crushed pieces carried by the first conveyor unit 2 are dropped into the first separation tank 3 to which water is supplied so that primarily heavy PVC, copper, and synthetic rubber go to the bottom of the tank by their own load. When sitting, the light PP or PE floats to the water surface of the water tank 3, and is discharged and collected through the separation container 5, respectively.

On the other hand, the water is supplied to the first separation tank (3) so that the appropriate level is maintained through the water supply pipe (4).

Therefore, the waste wire fragments are primarily separated from the heavy material and light material in the first separation tank (3).

In addition, the heavy materials PVC, copper, and synthetic rubber, which are collected at the bottom of the first separation tank 3, are forcibly pumped up by a pumping device installed in a transfer line, and supplied to the separator 6 using hydraulic power.

The sorting machine 6 has a predetermined length and width as shown in FIG. 2, and the case 61 has a rectangular shape with only the upper side and the water discharge end of the water open, and the case 61 has a lattice shape. The partitions 62 form a plurality of partition grooves 63.

In addition, the lattice partition 62 for forming the partition groove 63 is to allow the copper or the squeezed rubber to be picked up sequentially while leaving by the hydraulic power, even among heavy materials, without interfering with the flow of hydraulic power. It is highly desirable to have a height that allows them to be selected, which means that the length of the case 61 is about 1500 cm and the height of the partition 62 is about 2,5 cm from the inner bottom when the height is about 20 cm. It is very desirable to design.

On the other hand, it is very preferable that the sorter 6 be inclined so as to have a predetermined slope in the discharge direction to facilitate the flow of water.

Primary separations forcedly supplied to the sorter 6 configured as described above are partitioned grooves of each partition 62 while moving at a predetermined speed by water supplied from the inlet side into the case 61 through the water supply pipe 7. 63) are sorted sequentially.

For example, heavy copper does not move along the water for a long time and is caught by the grid-shaped partitions 62 at the inlet side and gradually collected and separated into the partition grooves 63. Next, the lighter synthetic rubber is Floating a little more along the water than the copper is also caught by the partition 62 and is gradually separated and collected in each partition groove (63).

However, since the PVC is the lightest in the primary separation as shown in Figure 3, it is not caught by the partition 62, but just floats with water and falls to the secondary separation tank 8 located at the discharge end, and discharged with water. PVC sinks to the bottom floor by load.

Therefore, copper, synthetic rubber and PVC of the primary separation material having different loads are separated finely by the hydraulic power flowing down the case 61 at a predetermined speed while passing through the separator 6 using hydraulic power.

In addition, the water supplied to the separator 6 is always supplied in a state in which the inside of the case 61 is filled, so that the second partition is separated in a state in which the PVC is caught in the lattice partition 62 and does not sink. The water tank 8 can be collected.

On the other hand, the water falling into the second separation tank (8) is a large amount of discharged during the working time, so simply discarding it causes waste of water, so the second separation tank (8) diverges the discharged water into various foreign substances contained therein. Several purification tanks 9 are provided for interconnection.

Therefore, the water stored in each branch of the purification tank (9) is stored for a predetermined time, ?? Various foreign matters, such as dust, are precipitated to the bottom and only the purified water is periodically recycled to the sorter 7 to reduce waste of water.

In addition, PVC, which has settled to the bottom of the second separation tank 8, is separated from copper and synthetic rubber through the first and second separation tanks 3 and 8, but there are still other impurities in the PVC. . If such impurities are present in the PVC, the removal of the impurities is required because the problem of the later melting of the PVC becomes poor.

In order to remove such impurities, the present invention forcibly pumps the PVC collected thereon to the lower end of the second separation tank 8 to the second conveyor device 11 inclined by using a separate pumping device, and supplies a water supply pipe ( 12) to be washed again in the water supplied at a predetermined injection pressure to remove impurities remaining in the PVC again.

Therefore, the impurities removed and separated from the PVC again by water are dropped and disposed of in the sewage tank 13 at the bottom thereof, and the pure PVC carried on the conveyor belt of the second conveyor device 11 is dropped again into the storage container 14. Stored.

On the other hand, the pure PVC stored in the reservoir 14 with impurities removed is transported by the screw conveyor 15 again in a state where moisture is removed and finally contained in the packing bag 14.

On the other hand, the injection pressure of the water supplied to the second conveyor device 11 is made in the process of the impurity contained in the PVC is transported in the inclined conveyor belt, so that only the impurity pressure is removed from the PVC It is preferable to have.

As described above, since the present invention completely removes copper, PVC, and synthetic rubber as well as impurities contained in PVC from the waste wires crushed through the above-described processes, the finally separated PVC is a good quality recycled material. It will have a molten state, allowing the production of high quality recycled products.

On the other hand, in the present invention, the first and second conveyor apparatus (2) (11), of course, is provided with a transport structure for the stable transport of the transport material to its outer peripheral surface due to its transport function.

When the copper and PVC and the synthetic rubber or impurities are removed from the waste wire by the above-described separation process, the copper and the synthetic rubber collected in each compartment groove 62 of the separator 6 are taken out. It is recycled and a small amount of synthetic rubber is melted and used as a material for a separate elastic material.

In the present invention, the removal of copper and synthetic rubber collected in the separator 6 is designed to remove about once or twice a day in consideration of work efficiency and the like, so as to improve the efficiency of the waste wire separation operation. Very preferred.

As described above, according to the present invention, recyclable copper and PVC can be easily separated from finely crushed waste wires, and a small amount of synthetic rubber remaining in the PVC is removed at the same time. It can increase the value as a material, and in particular, since the separation work is performed continuously and mechanically, the work is efficient and the maintenance cost is reduced because only a minimum number of workers are required. will be.

Although the present invention has been described with reference to the accompanying drawings, it should be understood that many modifications and changes may be made without departing from the scope of the following claims.

Claims (5)

Crushed waste wire put into the hopper is transferred to the 1st separation tank through the 1st conveyor device, so that heavy copper, PVC and synthetic rubber are submerged, and light weight PP and PE are separate storage tanks. By separating, and pumping and supplying the primary separator in the first separation tank to the water-supply sorting machine so that copper and synthetic rubber are gradually caught in each partition groove provided with lattice partition by hydraulic power. At the same time, the PVC floats to the second separation tank by hydraulic power to be separated into secondary tanks. The PVC stored in the secondary separation tank is transported back to the second conveyor device to remove impurities by washing water again, and then using a screw conveyor. PVC is removed from the broken wires, which is characterized in that it is finally transported and stored in the packaging bag to remove the Method of sorting copper and synthetic rubber. A first conveyor device for transporting the hopper and the closed wire in the crushed state; A first separation tank to which water is supplied to maintain a constant water level so as to first separate the crushed pieces carried by the first conveyor apparatus from heavy copper, synthetic rubber and PVC with light PP and PE; A separator having a partition groove formed by a lattice partition to separate the copper, synthetic rubber and PVC of the primary separation pumped from the first separation tank by hydraulic power; A second separation tank in which only the secondary PVC separated through the separator is discharged and stored; A second conveyor device for forcibly pumping the PVC stored in the first separation tank to remove and transport impurities again by washing water; Apparatus for sorting the fib C and copper and synthetic rubber from the crushed waste wire, characterized in that it consists of a screw conveyor for transporting and storing the pure PVC from which the impurities are removed from the storage container in the packaging bag. The method of claim 2, wherein the separator is installed inclined at a predetermined inclination so that the discharge end portion is lowered to facilitate the flow of hydraulic power, so that the fib C, copper and synthetic rubber from the broken wire in the crushed state Sorting device. The grid-shaped partition installed in the case of the sorter is characterized in that the height is partitioned lower than the side wall of the case from the bottom bottom, and the fibrous seed from the broken wire in the crushed state A device for sorting copper and synthetic rubber. According to claim 2, wherein the separation tank for storing only the PVC is separated and stored separately from the water discharged from the waste of the shredded state, characterized in that a plurality of purification tanks for connecting and installing the sediment and purification of various foreign substances contained therein Apparatus for sorting FV, copper and synthetic rubber from electric wires.