KR101071945B1 - Recycling device for disposed net - Google Patents

Abstract

The present invention relates to a waste net net recycling apparatus, and more particularly, to a waste net net recycling apparatus for collecting recyclable synthetic resin chips by removing the foreign matter by collecting the fishing net or construction safety net, melted and pulled out by an extruder.
According to the present invention, by removing the salt, sand, dust, etc. contained in the fibrous mesh of the waste net net effectively has the effect of making a high-purity polyethylene recycling chip.

Description

Waste Net Recycling Equipment {RECYCLING DEVICE FOR DISPOSED NET}

The present invention relates to a waste net net recycling apparatus, and more particularly, to a waste net net recycling apparatus for collecting recyclable synthetic resin chips by removing the foreign matter by collecting the fishing net or construction safety net, melted and pulled out by an extruder.

Fishing nets used to catch fish in the sea or safety nets installed and used in construction sites will be discarded without being reused because they will be torn or dirty.

Waste nets (waste fishing nets, waste safety nets) are not reused but are separated into specific wastes, which are collected by waste disposal companies and landfilled or incinerated.

Therefore, the relevant company has to pay a lot of costs for the disposal of the discarded nets to give the waste treatment company a service, and the disposal, there is a problem that the pollution of the sea or soil by the landfilled waste nets.

To collect and recycle the waste net, all thousands of floats and chains are first removed from the collected waste net. Next, the waste net is cut to a suitable length with a hydraulic cutter. Cutting is about 10m long and 3m wide.

The cut waste net removes debris and salt from the washing process. Although foreign matter and salts are removed by a method of treating with water, there is a problem of water pollution, and it is usually performed in a dry cleaning device. Dry-cleaned nets are finely pulverized by the removal of water from a centrifuge, also called a mixer. And the treated net net is sent to the extruder extruded in the form of a thin plastic rod.

Extruded rod-like regenerated material is cut to a certain size and processed into regenerated chips. The recycled chip is dried and finally packaged. In this way, the regeneration treatment process of the waste net is completed. The regenerated chip is used in various products in which plastic is used, such as automobile interior materials. If necessary, glass powder may be mixed and used.

However, some of the fishing nets, such as those used for ocean operations, contain considerable amounts of salt because they have been in the ocean for a long time. In this case, if the salt is not completely removed, a problem occurs when various parts are made from recycled chips. That is, there is a problem that the salt that has not been completely removed leaks out to the surface of the part in a short time. It doesn't matter if the part's color is white, but it doesn't look good. In addition, air bubbles remain where the leaked salt originally existed, which is not only good looking, but also structurally lowers the strength of the material.

Therefore, it is necessary to completely remove these salts and foreign matter to make a high quality recycled chip, there was a problem that can not completely remove the foreign matter by simple water washing or mechanical blow.

Republic of Korea Patent # 0766547 Republic of Korea Patent Publication No. 2005-0109055 Republic of Korea Patent Publication No. 2004-0062793

The present invention for solving the above problems is to put the salt or sand, cement powder, and other foreign matter buried in the waste net mesh inside the tornado to rotate at high speed, the waste net mesh recycling apparatus to discharge the foreign matter by centrifugal force during high speed rotation The purpose is to provide.

It is another object of the present invention to provide a waste net net recycling apparatus for forming a perforation on the cylindrical wall surface of the tornado to allow the salinity or other foreign matter separated from the waste net net to be discharged to the outside of the tornado to be collected by the dust collector.

The present invention devised to solve the above problems is a device for making a recycled chip by pulverizing and melting a synthetic net waste net made of a synthetic resin, such as fishing nets or safety nets, irradiating infrared rays inside the drying chamber 1102, the heater 1108 Infrared dryer (1100) for removing the water contained in the waste net network while spraying hot air using a; A low speed rotary cutter (1200) for cutting the waste net mesh from which moisture is removed using a cutting blade rotating therein; A pulverizer 1300 for pulverizing relatively smaller using a pulverizing screw rotating the pieces of the waste net mesh cut first; A screw 1408 that is rotated at a high speed by the rotating motor 1406 is installed in the horizontally lying cylindrical body 1402, and removes foreign substances while impacting the scraped net mesh pieces introduced into the body 1402. A high speed rotating trombell 1400; A cylindrical drum 1522 having a plurality of perforations 1524 formed on a wall thereof is installed inside the cylindrical body 1502 standing vertically, and the rotating plate 1518 provided at the bottom of the drum 1522 is rotated at high speed. A vertical rotating tornado 1500 having a rotating motor 1512 installed at one side thereof; A melter 1600 for melting pieces of waste net meshes passing through the vertically rotating tornado 1500 into high temperature heat to form a synthetic resin material in a liquid state; A mixer (1700) for mixing the synthetic resin material in the liquid state from the melter (1600) and molding it into an elongated string while discharging through the mold (1706) in front of the body (1702); A cooling water tank 1800 for cooling a string-shaped synthetic resin discharged from the mixer 1700; And a cutting machine 1900 which cuts the stretched cord-shaped synthetic resin material while being cooled in the cooling water tank 1800 to form a cylindrical regenerated chip having a length of 3 to 10 mm.

The waste net is characterized in that the polyethylene or polypropylene resin is made of a raw material.

A duct 1514 is installed at a rear surface of the body 1502 of the vertical rotating tornado 1500 to guide foreign matter separated from the waste net mesh pieces to a dust collecting facility, and the drum 1522 rotates while the rotating plate 1518 is rotated. The waste net mesh piece inside is rotated at high speed, and the foreign matter is separated from the waste net mesh piece by centrifugal force generated when the waste net mesh piece rotates, and passes through the perforation 1524 to form the inside of the duct 1514. Characterized in that enter.

The inside of the vertical rotation tornado 1500 is connected to a hot air fan for spraying hot air of 200 to 250 ℃ characterized in that to remove the moisture of the waste net net piece.

According to the present invention, by removing the salt, sand, dust, etc. contained in the fibrous mesh of the waste net net effectively has the effect of making a high-purity polyethylene recycling chip.

In addition, it is an object of the present invention to provide a waste net net recycling apparatus to facilitate the discharge of the foreign matter by washing the polyethylene fiber in a dry manner that is difficult to discharge the foreign matter due to shrinkage when wet.

1 is a block diagram showing the components of a recycling apparatus according to an embodiment of the present invention.
2 is a plan view showing the structure of the infrared dryer.
3 is a perspective view showing the structure of a low speed rotary cutter;
4 is a perspective view showing the structure of a grinder.
Figure 5 is a perspective view showing the internal and external structure of the high speed rotating trombell.
Figure 6 is a perspective view showing the structure of the vertical rotating tornado.
7 to 9 are plan views showing the cross-sectional structure of the tornado.
10 is an exploded perspective view showing the internal components of a tornado;
11 is a perspective view showing the structure of a melter and a mixer.
12 is a perspective view showing the structure of a cooling water tank.
13 is a perspective view showing the structure of a cutting machine.

Hereinafter, a "waste net recycling apparatus" (hereinafter referred to as a "recycling apparatus") according to an embodiment of the present invention with reference to the drawings.

1 is a block diagram showing the components of a recycling apparatus according to an embodiment of the present invention.

The recycling apparatus of the present invention operates as a whole in the order of 'drying-grinding-washing-melting-extrusion-cooling-cutting'.

The waste net net recycled by the recycling apparatus of the present invention is mainly made of polyethylene (PE) material, but the present invention may be applied to the recycling of the waste net net of other materials (polypropylene; PP).

Polyethylene is a high molecular compound and is classified into low density polyethylene and high density polyethylene according to the density. Low-density polyethylene (LDPE) is used to make various bottles, as well as ice-making boxes for refrigerators.

High-density polyethylene (HDPE) is characterized by its softening point, firmness, high strength and hard touch. High density polyethylene is used for the production of various containers, packaging films, fibers, pipes, industrial ropes and the like. Since fishing nets and safety nets are mostly made of high-density polyethylene, it can be regenerated using the recycling apparatus of the present invention.

Polyethylene and polypropylene are thermoplastic resins that can be easily recycled by removing impurities and melting and molding.

Hereinafter, the devices constituting the recycling apparatus of the present invention will be described according to the passing order of the closed net.

2 is a plan view showing the structure of the infrared dryer.

The infrared dryer 1100 is composed of a drying chamber 1102 of an elongated rectangular parallelepiped, an inlet 1104 for introducing a waste net mesh, and a blower tube 1106 for inducing high temperature heat generated from the heater 1108 into the drying chamber 1102. .

The waste net net introduced into the drying chamber 1102 through the inlet 1104 is dried in a state where there is little moisture by infrared rays and high temperature hot air. Water remaining in the waste net net through the infrared dryer 1100 is removed to 75 to 80%.

The heater 1108 may generate hot air in such a manner that heat generated from the heating element is transferred through the heat medium oil. The method of transferring or storing heat using thermal oil has high heat storage capacity and is easy to transfer, thus enabling efficient operation.

In addition, an infrared illuminating lamp (not shown) is installed inside the drying chamber 1102 to increase the drying effect while irradiating infrared rays on the waste net.

Waste net net from which most of the moisture is removed while passing through the infrared dryer 1100 becomes a small net piece during the cutting and grinding process, and thus foreign matters can be easily removed in the subsequent process.

Figure 3 is a perspective view showing the structure of the low speed rotary cutter, Figure 4 is a perspective view showing the structure of the grinder.

The closed net is cut into the first through the low speed rotary cutter 1200 to become a large net piece having a length of about 30 cm, and again crushed into a second through the grinder 1300 having a length of about 10 cm It becomes a small piece of net.

The low speed rotary cutter 1200 is configured such that the waste net pieces supplied through the conveyor belt 1202 are cut into relatively large pieces by cutting blades (not shown) inside when the pieces of the waste net are introduced into the inlet 1204. Have The cutting blade rotates at a low speed by an external rotary motor 1206. The net piece cut primarily through the low speed rotary cutter 1200 enters the input hopper 1302 of the grinder 1300, and is further formed by a grinding screw (not shown) that rotates inside by the rotary motor 1304. It is crushed into small net pieces.

The grinding screw mounted to the grinder 1300 has a denser blade than the cutting blade of the low speed rotary cutter 1200, thereby grinding the waste net into small pieces.

The crushed small net pieces are put into the high speed rotating trombell 1400 to remove large foreign matters first.

5 is a perspective view showing the inner and outer structures of the high speed rotating trombell.

The high-speed rotating trombell 1400 has an elongated cylindrical body 1402 lying horizontally, and a screw 1408 rotated by the rotary motor 1406 is installed inside the body 1402. When small pieces of net are introduced through the input hopper 1404 formed on one side of the body 1402, the screw 1408 rotates at a high speed to hit the net pieces. Large foreign matter such as sand, salt, dust, and the like, which is buried in the fragments of the net, fall off due to the impact of the screw 1408, and the fragments of the net move forward with the rotation of the screw 1408. Almost all the large foreign matter is separated from the net through the outlet 1410 installed in front of the body (1402).

A small piece of net passing through the high speed rotating trombell (1400) is put into the vertical rotation tornado (1500) to undergo a fine foreign matter removal process. In the vertical rotation tornado (1500) to remove salts and fine particles of the size between the fibers of the net piece, it is the most essential process for improving the quality of the recycled polyethylene chip produced in the present invention.

Figure 6 is a perspective view showing the structure of the vertical rotating tornado, Figures 7 to 9 are plan views showing the cross-sectional structure of the tornado, Figure 10 is an exploded perspective view showing the internal components of the tornado.

The vertical rotation tornado 1500 has a structure in which a hopper 1504 into which a net piece is inserted is formed on an upper portion of the cylindrical body 1502 standing vertically. A discharge port 1502a is formed at the front of the body 1502 to take out a net piece from which foreign substances have been removed, and a blocking plate 1506 for opening and closing the discharge port 1502a is installed in front of the body 1502. The blocking plate 1506 is moved up and down by the cylinder 1508. One end of the cylinder 1508 is installed on the upper portion of the body 1504, the cylinder rod of the other end is connected to the blocking plate 1506. As the cylinder 1508 expands and contracts, the blocking plate 1506 blocks or opens the outlet 1502a.

While the foreign matter removal process is performed in the vertical rotation tornado 1500, the blocking plate 1506 blocks the outlet 1502a, and when the process is finished, the blocking plate 1506 is raised to open the outlet 1502a to discharge the cleaned net fragments. do.

The lower part of the body 1502 is provided with a box 1510 in which a driving device and other equipment are built, and a rotating motor 1512 is installed on the side of the box 1510.

In the rear of the body 1502, a duct 1514 is installed to collect salt or dust, cement powder, and other foreign substances separated from the net pieces and send them to a separate dust collecting facility (not shown). The suction device may be included in the duct 1514 as necessary.

The bearing 1516 is installed inside the box 1510. The bearing 1516 is rotated by the rotational force transmitted from the rotation motor 1512. The rotary motor 1512 and the bearing 1516 may be connected by a belt or a chain. And the bearing 1516 may be further provided with a transmission (not shown).

The rotating plate 1518 is connected to the rotating shaft of the bearing 1516. The rotating plate 1518 is a circular plate and rotates at a high speed by the bearing 1516. Several protruding ribs 1520 are formed on the upper surface of the rotating plate 1518 so that foreign matters can be better removed by hitting a piece of net.

Inside the body 1502, a drum 1522 having a cylindrical shape and a relatively small size similar to the body 1502 is installed. The drum 1522 is fixedly installed on the inner wall surface of the body 1502 and does not rotate.

A large number of perforations 1524 are formed in the wall surface of the drum 1522. The salinity, dust, and the like are discharged to the outside of the drum 1522 through the perforations 1524 of the drum 1522.

The perforations 1524 are formed only up to approximately one third of the height of the entire wall of the drum 1522. That is, the perforations 1524 are formed only on the wall surface of about one third from the bottom.

In addition, a plurality of ribs 1526 protruding from the inner wall of the drum 1522 similar to those of the rotating plate 1518 are formed. Ribs 1526 of drum 1522 also collide with net fragments so that debris can be removed better.

When the rotating plate 1518 rotates at a high speed of about 1500 to 2000 rpm in the vertically rotating tornado 1500, a piece of net injected into the drum 1522 rotates together. The rotating piece of net mesh rotates at high speed under strong centrifugal force and collides with the inner wall of the drum 1522.

The rotating net fragments are subjected to centrifugal force, the impact of the fragments, and the bottom and side ribs 1520 and 1526 to separate foreign substances from the net fragments. The separated salt, dust, cement powder, etc. are discharged through the perforations 1524 of the drum 1522 by centrifugal force, and the discharged foreign matter is transferred to the dust collecting facility through the duct 1514.

And a hot air blower (not shown) for injecting high temperature hot air is connected inside the vertical rotation tornado 1500. It is preferable to make the temperature of hot air be about 200-250 degreeC. The hot air from the hot air enters the tornado (1500) through the tube and removes the remaining water as much as possible, allowing the foreign matter to be separated better. The foreign matter is completely removed by the impact of the high speed rotation of the rotating plate 1518 and hot air blowing of the hot air fan.

The mesh pieces from which fine foreign matters are removed by the vertically rotating tornado 1500 are input to the melting and extrusion process.

11 is a perspective view showing the structure of a melter and a mixer.

The melter 1600 melts the crushed and debris-finished net pieces with high temperature heat to form a synthetic resin material (polyethylene or polypropylene) in a liquid state. To this end, an injection hopper 1604 is provided at one upper portion of the body 1602 having a heat generating device installed therein. The fragment of the net introduced into the body 1602 through the input hopper 1604 is melted in a liquid state by the heat of high temperature.

The synthetic resin material melted in the liquid state exits through the outlet 1606 and enters the input hopper 1704 installed at one side of the body 1702 of the mixer 1700. The liquid synthetic resin material is uniformly mixed inside the mixer 1700 and discharged through the forming mold 1706 in front of the body 1702.

In the mold 1706, a plurality of thin holes are formed, and molding is performed by continuously extruding a liquid synthetic resin material through the holes. The shape of the hole is generally circular and may be of other shapes as needed. Molding mold 1706 may be provided with a device that can adjust the size of the hole.

The synthetic resin material in the molten state passing through the mold 1706 becomes a long thin string, and is drawn and cooled while passing through the cooling water tank 1800. 12 is a perspective view showing the structure of the cooling water tank. The body 1802 of the cooling water tank 1800 has a structure that can hold the cooling water, and the rollers 1804 and 1806 allow the material being cooled to pass smoothly. There are several.

Although the material at the time of being extruded from the shaping | molding die 1706 has high fluidity as a high temperature, as it passes through the cooling water tank 1800, it will become a solid state as temperature falls. The stretching occurs as the solid material is pulled forward, so that the resin material becomes a very thin string.

The thickness of the material generally has a diameter of approximately 1 to 3 mm.

The stretched and cooled synthetic resin material is put into the cutting machine 1900, Figure 13 is a perspective view showing the structure of the cutting machine.

On the side of the cutter 1900, a pedestal 1902, through which a string-shaped synthetic resin material passes, is installed in a bar shape, and the synthetic resin material enters under a cover 1904 lying horizontally.

Inside the cover 1904 is a cutting blade 1906, the horizontal axis of rotation is laid horizontally. The cutting blade 1906 rotates at a high speed to finely cut the string-shaped synthetic resin material to form a cylindrical regenerated chip having a length of about 3 to 10 mm.

The cut regenerated chip exits through the outlet 1908 installed on the opposite side and is collected in the collection box 1910. The recycled chips collected in the collection box 1910 are released through a packaging process.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the above-described technical configuration of the present invention may be embodied by those skilled in the art to which the present invention pertains without changing its technical spirit or essential features of the present invention. It will be appreciated that the present invention may be practiced as. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

Claims (4)

It is a device to make recycled chips by grinding and melting waste net made of synthetic resin such as fishing net or safety net,
An infrared dryer 1100 irradiating infrared rays from the drying chamber 1102 and removing moisture contained in the waste net while spraying high temperature hot air using a heater 1108;
When the waste net mesh from which water is removed while passing through the infrared dryer 1100 enters through the inlet 1204, a low speed cutting and discharging the waste net mesh using a cutting blade rotated by the rotary motor 1206. A rotary cutter 1200;
When the waste net mesh piece cut by the cutting machine 1200 is introduced through the input hopper 1302, the waste net mesh piece is secondly crushed to a smaller size by using a grinding screw rotated by the rotary motor 1304. And a grinder 1300 for discharging;
A screw 1408 rotating at a high speed by the rotating motor 1406 is installed in the horizontally lying cylindrical body 1402, and is pulverized while passing through the grinder 1300. 1402, the high speed rotating trombell (1400) to remove and discharge the foreign matter while the screw (1408) to the waste net mesh pieces introduced into the inside;
The upper portion of the cylindrical body 1502 is formed with a hopper 1504 into which the waste net mesh pieces passing through the high-speed rotating trombell 1400 are formed. A cylindrical drum 1522 having a perforated 1524 is installed, and a vertical rotating tornado 1500 having a rotating motor 1512 installed at one side thereof to rotate the rotating plate 1518 provided at the bottom of the drum 1522 at high speed. Wow;
When the waste net mesh pieces that have passed through the vertically rotating tornado 1500 are introduced into the body 1602 through the input hopper 1604, the waste net mesh pieces are melted with high temperature heat to form a synthetic resin material in a liquid state, and an outlet 1606. A melter 1600 discharged through the;
An injection hopper 1704 is installed below the outlet 1606 of the melter 1600, mixes the synthetic resin material in a liquid state entering through the injection hopper 1704, and forms a mold in front of the body 1702. A mixer 1700 which is shaped into an elongated string while being discharged through 1706;
Cooling water is stored in the body 1802, the cooling water tank (1800) for cooling the string-shaped synthetic resin discharged from the mold 1706 of the mixer 1700 by the cooling water;
And a cutting machine (1900) for cutting a string-shaped synthetic resin material which is stretched and discharged while being cooled in the cooling water tank (1800) to form a cylinder-shaped regenerated chip having a length of 3 to 10 mm. The method of claim 1,
The waste net mesh is characterized in that the polyethylene or polypropylene resin is made of raw material, waste net mesh recycling apparatus. The method of claim 1,
On the rear of the body 1502 of the vertical rotation tornado 1500, a duct 1514 is installed to guide the foreign matter separated from the waste net net piece to the dust collecting facility,
As the rotating plate 1518 rotates, the waste net mesh pieces contained in the drum 1522 rotate at high speed, and the foreign matter is separated from the waste net mesh pieces by centrifugal force generated when the waste net mesh pieces rotate. Waste net mesh recycling apparatus, characterized in that passing through the perforations (1524) into the duct (1514). The method of claim 3,
Inside the vertical rotation tornado (1500) is connected to a hot air fan for spraying hot air of 200 to 250 ℃ characterized in that to remove the moisture of the waste net mesh pieces, waste net mesh recycling apparatus.

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