KR102335848B1 - Waste synthetic resin sorting system - Google Patents

Abstract

The present invention relates to a waste synthetic resin and skin sorting system capable of separately sorting a waste synthetic resin by removing the skin of a plastic film or paper attached to the waste synthetic resin. According to the present invention, the waste synthetic resin and skin sorting system separates the skin attached to crushed waste synthetic resin pieces by friction in a friction separation unit and then distinguishes and sorts the waste synthetic resin pieces from the skin in a sorting unit. The friction separation unit comprises a stirrer including a stirring drum having an inlet and an outlet, a stirring shaft installed on the stirring drum to be rotatable, and a plurality of stirring blades connected radially from the center of the stirring shaft and provided at predetermined intervals along the direction from the front end to the rear end to separate the skin attached to the waste synthetic resin pieces by friction. The front-side stirring blade and the rear-side stirring blade are connected to be inclined at a predetermined angle toward the center of the stirring shaft in order to induce the waste synthetic resin pieces to gather in the center of the stirring drum.

Description

Waste synthetic resin peeling sorting system {WASTE SYNTHETIC RESIN SORTING SYSTEM}

The present invention relates to a waste synthetic resin peeling sorting system, and more particularly, to a waste synthetic resin peeling sorting system that can separate by removing the peeling of vinyl or paper attached to the waste synthetic resin.

As is well known, in order to recycle synthetic resins such as containers that have been separated and collected, it is necessary to remove and sort a thin skin including vinyl or paper attached to the surface.

As a prior art for sorting by removing the peeling attached to the synthetic resin as described above, Korean Patent Registration No. 10-2171040 (registration date: October 22, 2020) 'System for removing and sorting waste synthetic resin' is disclosed. has been

As shown in FIG. 5, in the prior art, as shown in FIG. 5, a crushing unit 200 for crushing the waste synthetic resin, a friction separation unit 400 for frictionally separating the peeling from the waste synthetic resin pieces supplied from the crushing unit 200, the It is roughly divided into a sorting unit 600 that separates the waste synthetic resin pieces separated from the friction separating unit 400 by covering the peeling.

And the friction separator 400 includes a stirring drum, a stirring blade provided radially on the stirring shaft rotatably installed on the stirring drum to rub the waste synthetic resin pieces with each other to separate the peeling.

However, in the prior art described above, when the stirring blade rotates about the stirring shaft, the waste synthetic resin pieces do not gather in the center of the stirring drum but protrude to the inner surface of the stirring drum. There was a problem in that the efficiency of removing the dermabrasion decreased due to this increase.

(0001) Republic of Korea Patent Registration No. 10-2171040 (Registration date October 22, 2020) (0002) Republic of Korea Patent Registration No. 10-2171052 (Registration date October 22, 2020) (0003) Republic of Korea Patent Registration No. 10-0459996 (Registration Date: November 25, 2004) (0004) Republic of Korea Patent No. 10-0403939 (Registration Date: October 20, 2003)

The present invention has been devised to solve the problems of the prior art as described above, and an object of the present invention is to induce the waste synthetic resin pieces to gather at the center of the stirring drum when the stirring blade rotates about the stirring shaft by mutual frictional force. An object of the present invention is to provide a waste synthetic resin peeling screening system that can maximize the removal efficiency of peeling.

In order to achieve the above object, the present invention is a waste synthetic resin peeling sorting system that separates the skin attached to the crushed waste synthetic resin piece by friction in the friction separation unit and then separates the waste synthetic resin piece and the skin at the sorting unit. , the friction separation unit, a stirring drum having an inlet and an outlet, a stirring shaft rotatably installed on the stirring drum, is connected radially from the center of the stirring shaft and is provided at predetermined intervals along the direction from the front end to the rear end to the waste synthetic resin piece Including a stirrer having a plurality of stirring blades for separating the attached peeling skin by friction, wherein the front side stirring blade and the rear side stirring blade are, in order to induce the waste synthetic resin pieces to gather in the center of the stirring drum, the stirring It is a technical idea to be connected inclined at a predetermined angle toward the center of the axis.

The front-side stirring blade and the rear-side stirring blade may be connected to the stirring shaft in a symmetrical structure with respect to the center line of the stirring shaft.

In this case, the front-side stirring blade and the rear-side stirring blade may be connected to the stirring shaft to form an angle of 30° to 50° with respect to a vertical line parallel to the center line.

The sorting unit includes a main body having a scrap outlet for discharging the waste synthetic resin piece by its own weight and a peeling outlet for discharging the peeling, a rotary separation unit rotating to separate the waste synthetic resin piece and the skin injected into the body of the body, the and a blower for forcibly discharging the peeling separated by a rotational separator to a peeling outlet, wherein the main body includes a cylindrical cylindrical part into which the waste synthetic resin piece and peeling are put, and is formed in the lower part of the cylindrical part, the rotational separation part The lower conical part having the fragment discharge port to discharge the waste synthetic resin piece separated by its own weight, the peeling formed on the upper part of the cylindrical part and separated by the rotary separator is forcibly discharged by the blower. A plurality of linear guides may be provided at predetermined intervals along the circumferential direction to guide the upward rotation of the peeling separated by the rotation separator on the inner surface of the cylindrical part, including an upper cone having a peeling outlet.

In this case, the linear guide may be inclined to have an inclination angle of 15° to 30° from the upper end of the inner surface of the cylindrical part to the lower end.

According to the present invention embodied as the above-described solution, in the friction separation unit, both stirring blades are connected at an angle toward the center line of the stirring shaft to induce the waste synthetic resin pieces to gather in the center of the stirring drum when the stirring shaft is rotated. There is a very useful effect that can maximize the removal efficiency of dermabrasion.

In addition, according to the present invention embodied as the above-mentioned solution, according to the embodiment of the present invention, the linear guide in the sorting unit induces the upward turning of the peel separated by the rotary separator by the spiral flow of the upper conical part. There is a very useful effect that the peel can be discharged quickly through the peel outlet.

1 is an elevation view showing a friction separation unit according to an embodiment of the present invention.
Figure 2 is a side view showing a stirring shaft and stirring blades according to an embodiment of the present invention.
Figure 3 is an elevation view showing the selection according to the embodiment of the present invention.
Figure 4 is a perspective view showing a cylindrical portion and a linear guide according to an embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art.

Accordingly, the shape of the components expressed in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

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

The waste synthetic resin peeling sorting system according to an embodiment of the present invention is a crushing unit 200 for crushing the waste synthetic resin, a friction separation unit 400 for separating the peeling from the waste synthetic resin pieces supplied from the crushing unit 200 by friction; It includes a sorting unit 600 that separates the waste synthetic resin pieces separated from the friction separating unit 400 and peels off the skin.

As shown in FIG. 1 , the friction separation unit 400 includes a stirring drum 410 having an inlet 411 and an outlet 412 , a stirring shaft 420 rotatably installed in the stirring drum 410 , a stirring shaft It includes a plurality of stirring blades 430 connected radially from the center of the 420 and provided at predetermined intervals along the direction from the front end to the rear end to separate the peeling attached to the waste synthetic resin piece by friction.

The stirring drum 410 is formed in a horizontally long circular cylindrical shape. An inlet 411 is provided at the upper portion of the stirring drum 410 to put crushed waste synthetic resin pieces supplied through the first transfer unit 300, and an outlet 412 is provided at the bottom to discharge waste synthetic resin pieces and peels do.

Here, the first transfer unit 300 includes a first transfer pipe connected to the inlet 411 of the stirring drum 410, and a first transfer screw for transferring the waste synthetic resin pieces and the peeling to the first transfer tube.

In addition, the discharge port 412 is provided with a discharge means 440 to automatically discharge the waste synthetic resin pieces and peeling.

The discharge means 440 includes an opening/closing door 441 for opening and closing the discharge port 412 , and a cylinder 443 connected by a link 442 to operate the opening/closing door 441 . That is, when the rod 444 is expanded and contracted by driving the cylinder 443 , the opening/closing door 441 connected by the link 442 is operated to open or close the outlet 412 .

And the discharging means 440 further includes a discharging chute 445 provided in the stirring drum 410 to guide the waste synthetic resin pieces and peeling discharged through the discharge port 412 to the second transfer unit 500 .

Here, the second transfer unit 500 is a second transfer pipe 510 connected to the input means 640 of the sorting unit 600 , and a second transfer screw for transferring the waste synthetic resin piece and the dermabrasion to the second transfer tube 510 . 520 and a storage hopper 530 .

The stirring shaft 420 is rotatably installed in the axial direction of the stirring drum 410 and is rotated by the motor 450 connected by a pulley (not shown).

As shown in FIG. 1 , the stirring blades 430 are made of a plurality of radially connected extending in all directions from the center line (CL, the line indicating the center of rotation of the stirring shaft) of the stirring shaft 420 .

Referring to FIG. 2 , the stirring blade 430 is located on the left side of the stirring shaft 420 based on the center line (ML, a line indicating the center at the same distance from the left and right ends of the stirring shaft) of the stirring shaft 420 . It is roughly divided into a front end side stirring blade 430 connected radially and a rear end side stirring blade 430 connected radially on the right side.

In particular, the front end side stirring blade 430 and the rear end side stirring blade 430 are connected to the stirring shaft 420 inclined at a predetermined angle toward the center line ML, so that the waste synthetic resin pieces are collected in the center of the stirring drum 410 . induce to

That is, the front end side stirring blade 430 and the rear end side stirring blade 430 are connected to the stirring shaft 420 in a symmetrical structure with respect to the center line ML of the stirring shaft 420 .

Here, the front end side stirring blade 430 and the rear end side stirring blade 430 are inclined to the stirring shaft 420 to form an angle θ1 of 30° to 50° with respect to the vertical line VL parallel to the center line ML. It is preferable to be connected.

For this reason, when the tip side stirring blade 430 forms an angle of less than 30° with respect to the vertical line, the waste synthetic resin pieces do not gather in the center of the stirring drum 410 and bounce a lot in the direction of the inner surface and the outlet 412, 50 This is because, when the angle exceeds °, the piece of waste synthetic resin jumps out toward the upper portion of the stirring drum 410 and the inlet 411 .

As shown in FIG. 3, the sorting unit 600 is a body 610 having a piece discharge port 613 for discharging waste synthetic resin pieces by its own weight and a peeling discharge port 615 for discharging the peeling body 610, of the main body 610. It includes a rotary separator 630 that rotates to separate the waste synthetic resin pieces and the peeling put into the inside, and a blower 660 for forcibly discharging the peeling separated by the rotary separator 630 to the peeling outlet 615.

The main body 610 is formed at the lower part of the cylindrical cylindrical part 611 and the cylindrical part 611 into which the waste synthetic resin piece and the peeling are put, and the waste synthetic resin piece separated by the rotary separator 630 is discharged by its own weight. The peeling outlet 615 formed on the lower conical part 612 having the piece outlet 613, the cylindrical part 611 and forcibly discharging the peeling separated by the rotary separator 630 by the blower 660. ) with an upper conical portion 614 , supported by a frame 650 .

The cylindrical part 611 is formed in a circular tube shape, and the waste synthetic resin piece and the peeling are inputted through the input means 640 .

The input means 640 is an input pipe 641 connected to the upper one side of the cylindrical part 611, an input screw 642 which is installed in the input pipe 641 to transfer the waste synthetic resin pieces and peel to the cylindrical part 611, It includes an input hopper 643 for supplying scraps of waste synthetic resin and peeling to the input screw 642 .

And as shown in FIG. 3 on the inner surface of the cylindrical part 611, a plurality of linear guides 620 are provided at predetermined intervals along the circumferential direction to guide the upward rotation of the peeling separated by the rotation separator 630. do.

Referring to FIG. 4 , the linear guide 620 is inclined to have an inclination angle θ2 of 15° to 30° from the top to the bottom of the inner surface of the cylindrical portion 611 .

The linear guide 620 induces upward rotation to discharge the peel separated by the rotation separator 630 from the upper cone 614 to the peel outlet 615 by a spiral flow.

The rotation separation unit 630 is provided radially on the upper surface of the conical rotation separation plate 631 and the rotation separation plate 631 to separate the waste synthetic resin pieces and the peeling. ) includes a separator plate support 633 supported on the bottom surface, a separator plate motor 634 connected to a drive shaft to rotate the rotation separator 631, and a motor support 635 supporting the separator plate motor 634. .

A gap G is formed between the outer diameter of the rotary separator 631 and the inner diameter of the cylindrical portion 611 to allow the fall of the waste synthetic resin piece and the flow of air through the inlet hole 616 .

The blower 660 is installed at the peeling outlet 615 to forcibly suck the peeling raised by the rotary separator 631 and discharge it to the peeling outlet 615 .

At this time, the peeling outlet 615 is provided with a discharge damper 670 to control the discharge amount of the peeling.

And the peeling discharged to the peeling outlet 615 is collected in a separate collection box connected to the discharge duct (680).

The overall operation according to the embodiment of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, the waste synthetic resin input by the input conveyor 100 is crushed into pieces of a predetermined size in the crusher 200 .

Then, the waste synthetic resin piece transferred to the friction separation unit 400 through the first transfer unit 300 is rubbed by the rotation of the stirring blade 430 to separate the peeling applied to the outer surface.

At this time, the front end side stirring blade 430 and the rear end side stirring blade 430 are connected to the stirring shaft 420 inclined at a predetermined angle toward the center line (ML) so that the waste synthetic resin pieces are gathered in the center of the stirring drum (410). Therefore, it is possible to maximize the removal efficiency of peeling by mutual friction.

Next, the waste synthetic resin pieces and peels separated by the friction separation unit 400 are transferred to the sorting unit 600 through the second transfer unit 500 .

Subsequently, the sorting unit 600 discharges a piece of waste synthetic resin having a large specific gravity by the operation of the rotation separation unit 630 to the fragment discharge port 613 by the centrifugal force and weight of the rotation separation plate 631, and the specific gravity is small. The scattered peeling is forcibly sucked by the blower 660 and discharged to the peeling outlet 615 .

Here, the linear guide 620 provided in the cylindrical part 611 guides the discharge by the spiral flow from the upper conical part 614 by inducing the upward turning of the peeling separated by the rotation separator 630 .

Therefore, according to the embodiment of the present invention, the both sides of the stirring blades 430 in the friction separation unit 400 are connected to be inclined at a predetermined angle toward the center line ML of the stirring shaft 420, so that when the stirring shaft 420 rotates, it is closed. Since the synthetic resin pieces are induced to gather in the center of the stirring drum 410, there is an advantage in that it is possible to maximize the removal efficiency of the peeling by the mutual frictional force.

In addition, according to the embodiment of the present invention, the linear guide 620 in the sorting unit 600 induces upward rotation of the peeling separated by the rotation separator 630 to induce the peeling by the spiral flow of the upper conical part 614 . There is an advantage in that the dermabrasion can be quickly discharged through the outlet 615 .

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom.

Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description.

Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

100: input conveyor 200: crushing unit
300: first transfer unit 400: friction separation unit
410: stirring drum 420: stirring shaft
430: stirring blade 500: second transfer unit
600: sorting unit 610: main body
611: cylindrical part 612: lower conical part
614: upper cone 620: linear guide
CL: Centerline G: Gap
ML: center line

Claims (5)

In the waste synthetic resin peeling sorting system that separates the skin attached to the crushed waste synthetic resin piece by friction at the friction separation unit, and then covers the waste synthetic resin piece and the skin at the sorting unit,
The friction separator includes a stirring drum having an inlet and an outlet, a stirring shaft rotatably installed on the stirring drum, radially connected from the center of the stirring shaft, and provided at predetermined intervals along the direction from the front end to the rear end to attach to the piece of waste synthetic resin Including a stirrer having a plurality of stirring blades to separate the peeled skin by friction,
The front-side stirring blade and the rear-side stirring blade are connected to be inclined at a predetermined angle toward the center of the stirring shaft in order to induce the waste synthetic resin pieces to gather in the center of the stirring drum,
The front-side stirring blade and the rear-side stirring blade are connected to the stirring shaft in a structure symmetrical left and right with respect to the center line of the stirring shaft,
Waste synthetic resin peeling sorting system, characterized in that the front-side stirring blade and the rear-side stirring blade are connected to the stirring shaft to form an angle of 30° to 50° with respect to a vertical line parallel to the center line. delete delete The method according to claim 1,
The sorting unit includes a main body having a scrap outlet for discharging the waste synthetic resin piece by its own weight and a skinning outlet for discharging the peeling, a rotary separation unit rotating to separate the waste synthetic resin piece and the skin injected into the body of the body, the A blower for forcibly discharging the peeling separated by the rotary separator to the peeling outlet,
The main body has a cylindrical cylindrical portion into which the waste synthetic resin piece and the skinning are put, and a lower cone having the piece outlet to discharge the waste synthetic resin piece separated by the rotary separator by its own weight, which is formed under the cylindrical portion. Part, comprising an upper conical part formed on the upper part of the cylindrical part and having the peeling outlet so as to forcibly discharge the peeling separated by the rotary separator by the blower,
On the inner surface of the cylindrical part, a plurality of linear guides are provided at predetermined intervals along the circumferential direction to guide the upward rotation of the peeling separated by the rotary separator. 5. The method according to claim 4,
The linear guide is a waste synthetic resin peeling sorting system, characterized in that it is inclined to have an inclination angle of 15° to 30° from the upper end of the inner surface of the cylindrical part to the lower end.

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