KR102627995B1 - Sorting system for separating household waste - Google Patents

Abstract

The present invention discloses a sorting system for separating household waste, which includes a shredding unit that shreds waste into predetermined sizes, a transfer unit that is installed at an upward slope to transport the waste shredded through the shredding unit in an upward direction, and is connected to the transfer unit. It includes a primary sorting unit that is installed to sort the waste by size and a secondary sorting part that is installed in a direction perpendicular to the primary sorting unit and separates the sorted waste sorted from the first sorting unit by vibration, the 1 The tea sorting unit includes a base frame supported on the floor, a drum structure installed as a cylindrical screen on the base frame, and the diameter of the through hole is adjusted to enable sorting of waste of various particle sizes, and a drum structure facing along the base frame It is installed in pairs, and the inner circumferential surface includes a drum support that supports the rotation of the drum structure with an arcuate surface, and a driving unit that is installed in pairs at the front and rear on the base frame to rotate the drum structure.

Description

Sorting system for separating household waste}

Embodiments of the present disclosure relate to a sorting system for separating household waste, and relate to a sorting system for separating household waste that sorts household waste, such as shredded synthetic resin, by size.

In general, waste generated during daily life mainly consists of food, synthetic resin products, and vinyl.

Most of these household wastes belong to the type that can be recycled, but considering various surrounding circumstances, they could not be recycled and were buried in landfills.

However, in recent years, as urbanization is progressing rapidly, it has become increasingly difficult to secure additional landfill sites, and the types of landfill waste are limited due to reasons such as environmental pollution. In particular, it has been pointed out that waste of resources is severe. While methods for recycling waste from landfills are gaining prominence, various corresponding technologies are being developed.

Therefore, various devices are used to recycle or sort waste, and one of these waste treatment devices, a screen sorter, is mainly used to separate particles of different types.

Screen sorters are divided into cylindrical screen sorters and flat screen sorters depending on their purpose. In general, cylindrical screen sorters are mainly used to process construction waste. They form a through hole in the wall of a cylindrical drum, and the inside of the screen is filtered as the drum rotates. It separates soil and sand from passing construction waste, and a flat screen sorter is mainly installed at an angle in a waste disposal device and is used to separate small particles of soil or sand from flowing waste.

In order to sort and separate waste, one waste sorting device is generally provided to include a plurality of sorters because it is not possible to properly sort waste with just one sorter.

However, in the case of the screen sorter, the size of the through hole through which the waste is sorted by size and discharged is limited, so there is a limitation in separating various wastes.

Republic of Korea Patent Registration No. 10-0760476 Republic of Korea Patent Publication No. 10-2012-0000747

Embodiments of the present disclosure are intended to provide a sorting system for separating household waste that improves the problems described above, and improves the waste sorting effect by adjusting the size of the through hole for sorting waste in the primary sorting part of the cylindrical screen. The purpose is to provide a sorting system for separating household waste that can improve compatibility and improve compatibility in sorting waste of various particle sizes.

The technical problems to be achieved in the embodiments of the present disclosure are not limited to the matters mentioned above, and other technical problems not mentioned can be explained to those skilled in the art from the various embodiments described below. can be considered.

In the sorting system for separating household waste according to the idea of the present invention, a shredding unit that shreds waste to a certain size, a transfer unit that is installed at an upward slope to transport the waste shredded through the shredding unit in an upward direction, and a It includes a primary sorting unit that is installed so as to sort the waste by size and a secondary sorting part that is installed in a direction perpendicular to the primary sorting part and separates the sorted waste sorted from the first sorting unit by vibration, The primary sorting unit includes a base frame supported on the floor, a drum structure installed as a cylindrical screen on the base frame, and the diameter of the through hole is adjusted to enable sorting of waste of various particle sizes, and a drum structure facing along the base frame It is installed in pairs, and the inner circumferential surface includes a drum support that supports the rotation of the drum structure with an arcuate surface, and a driving unit that is installed in pairs at the front and rear on the base frame to rotate the drum structure.

According to an embodiment of the present invention, the drum structure includes a first screen drum in which a plurality of first through holes are formed on a cylinder to discharge the waste smaller than the diameter size of the first through holes, and the first screen drum. It is installed to be in close contact with the inside, and the opening and closing plates of a certain area are spaced apart along the circumferential direction, so that the diameter of the first through hole is rotatable in a certain range so that the size of the diameter of the first through hole is adjusted according to the degree of overlap of the opening and closing plates. A second screen drum, a stopper drum installed at one end of the second screen drum, supporting the first screen drum at the end side, and fixing the rotational state of the second screen drum, and the stopper drum coupled thereto. The first screen drum and the second screen drum are fixedly installed inside and rotated by the driving unit to adjust the size of the third through hole to finally drop the waste that has passed through the first through hole and the second through hole. It may include a third screen drum in which a ball is formed.

And according to an embodiment of the present invention, the third screen drum is an oval-shaped drum, and the third through hole may be formed to be larger in diameter than the first through hole.

In addition, according to an embodiment of the present invention, a first flange is formed on one end of the first screen drum, a plurality of first long holes are formed along the circumferential direction of the first flange, and the stopper drum also has a stopper flange. is formed, a plurality of stopper holes are formed along the circumferential direction of the stopper flange, a second flange is formed at both ends of the second screen drum, and the second flange has a circumferential surface facing forward and backward. A plurality of rotating protrusions are formed, so that after the rotating protrusions are respectively inserted into the first long hole and the stopper long hole, the second screen drum is rotated within the range of the long hole and can be fixed by a fastening means in the rotating state.

In the sorting system for separating household waste according to the present invention, the waste sorting effect can be improved by adjusting the size of the through hole for sorting waste in the primary sorting part of the cylindrical screen.

In addition, when sorting waste of various particle sizes, compatibility can be improved by adjusting the size of the through hole.

1 is an overall configuration diagram of a screening system for separating household waste according to an embodiment of the present disclosure;
Figure 2 is a perspective view of a screening system for separating household waste according to an embodiment of the present disclosure;
Figure 3 is a front view of a screening system for separating household waste according to an embodiment of the present disclosure;
Figure 4 is a side view of a screening system for separating household waste according to an embodiment of the present disclosure;
Figure 5 is an operational diagram showing the rotational operation of the drum structure in Figure 4;
Figure 6 is an exploded perspective view of the drum structure in the sorting system for separating household waste according to an embodiment of the present disclosure;
Figure 7 is an exemplary diagram showing size adjustment of the first through hole in the drum structure according to an embodiment of the present disclosure;
Figure 8 is a front view of a sorting system for separating household waste according to another embodiment of the present disclosure.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

The same reference numbers or symbols shown in each drawing of this specification indicate parts or components that perform substantially the same function. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

Terms used herein are used to describe embodiments and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “include” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. The existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

Terms containing ordinal numbers, such as “first,” “second,” etc., used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms refer to one It is used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related stated items or any of a plurality of related stated items.

Terms such as "... unit", "... unit", and "module" used in the specification refer to a unit that processes at least one function or operation, which is implemented as hardware, software, or a combination of hardware and software. It can be. Additionally, the terms “a or an,” “one,” “the,” and similar related terms are used herein in the context of describing various embodiments (particularly in the context of the claims below). Unless otherwise indicated or clearly contradicted by context, it may be used in both singular and plural terms.

The terms “top”, “bottom”, “front”, “rear”, etc. used below are defined based on the drawings, and the shape and location of each component are not limited by these terms.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

Here, Figure 1 is an overall configuration diagram of a sorting system for separating household waste according to an embodiment of the present disclosure, Figure 2 is a perspective view of a sorting system for separating household waste according to an embodiment of the present disclosure, and Figure 3 is a diagram showing the overall configuration of a sorting system for separating household waste according to an embodiment of the present disclosure. It is a front view of a sorting system for separating household waste according to an embodiment of the present disclosure, Figure 4 is a side view of a sorting system for separating household waste according to an embodiment of the present disclosure, and Figure 5 shows the rotational operation of the drum structure in Figure 4. It is an operation diagram, Figure 6 is a separated perspective view of the drum structure in the sorting system for separating household waste according to an embodiment of the present disclosure, and Figure 7 is a size adjustment of the first through hole in the drum structure according to an embodiment of the present disclosure. This is an example showing:

As shown in FIG. 1, the sorting system for separating household waste according to an embodiment of the present disclosure includes a shredding unit 100 that largely crushes the waste, a transport unit 200 that transports the waste, and 1 that sorts the waste by size. It may include a primary sorting unit 300 and a secondary sorting unit 500 that separates the sorted waste from the primary sorting unit 300 by vibration.

The shredding unit 100 in the form of a hopper shreds household waste made of materials such as synthetic resin to a certain size.

It is shredded into pieces approximately 5cm in diameter.

And the household waste shredded from the shredding unit 100 can be transported through the transfer unit 200.

The transfer unit 200 may be a belt conveyor, and the belt conveyor is installed to be inclined upward to transfer waste in an upward direction.

The transfer unit 200 may be connected to and installed between the crushing unit 100 and the primary sorting unit 300, as well as the end side of the primary sorting unit 300 and the secondary sorting unit 500.

Here, in explaining the sorting system for separating household waste of the present invention, the shredding unit 100 and the transfer unit 200 are known and common technologies, so detailed descriptions may obscure the gist of the present invention, so they are omitted or replaced with simple names. Explain.

Waste shredded to a certain size in the shredding unit 100 is transported along the transport unit 200 and delivered to the primary sorting unit 300, where it is sorted by size.

In other words, as an element for primary sorting of waste, the primary sorting unit 300 separates the waste into solids with a diameter of 5 cm or more and solids with a diameter of less than 5 cm (primary sorting).

More specifically, as shown in FIGS. 2 to 4, the primary sorting unit 300 largely consists of a base frame 310 and a drum structure 400 installed as a cylindrical screen on the base frame 310. It may include a drum support 320 that supports rotation of the drum structure 400 and a driving unit 330 that rotates the drum structure 400.

The base frame 310 is preferably made of metal and has a rectangular frame shape, and is spaced a certain distance away from the floor frame 312 and is supported on the floor to form a drum structure 400, a drum support 320, and a driving unit ( It consists of a support frame 314 on which 330) is installed, and the floor frame 312 and the support frame 314 are connected by a plurality of vertical frames (not numbered).

A belt conveyor 316, such as the transfer unit 200, may be installed between the floor frame 312 and the support frame 314.

The belt conveyor 316 transports the waste sorted from the drum structure 400 to the secondary sorting unit 500.

First, the drum support 320 and the driving unit 330 will be described. The drum support 320 is installed along the longitudinal direction of the support frame 314 and may be installed in pairs facing each other.

The drum support 320 may be installed on the support frame 314 by welding, etc., and the inner peripheral surface may preferably be formed as an arcuate surface in order to support the cylindrical drum structure 400 from the inside.

Furthermore, the separation distance between the drum supports 320 facing each other with the drum structure 400 in between may correspond to the rotation radius of the drum structure 400.

And the driving unit 330 may be composed of a pulley motor 331 capable of forward and reverse rotation and a driving roller 332 connected by a belt, and the driving roller 332 can be rotated by contacting the drum structure 400. .

The pulley motor 331 and the driving roller 332 are installed on the support frame 314, and are installed as a pair facing each other at the front end and the rear end, so that the drum structure 400 can be rotated with power. there is.

Furthermore, like the driving roller 332, a support roller 334 that prevents the drum structure 400 from leaving and supports rotation may be further installed from above.

The support roller 334 may be rotatably installed on the roller support 336 leading to the top of the drum support 320.

The support roller 334 is installed to be able to rotate freely on the roller support 336 and supports the upper side of the rotating drum structure 400.

In addition, the support roller 334 is installed on the front and rear sides of the support frame 314 like the drive unit 330, and can also be installed on the roller support 336 between the front side and the rear side.

In addition, the drum structure 400 rotates to cause wastes located inside it to fall below a certain size onto the belt conveyor 316.

A cylindrical screen is installed on the support frame 314, and the diameter of the first through hole 412 can be adjusted to enable sorting of waste of various particle sizes.

In more detail, the drum structure 400 will be described with reference to FIG. 6.

The drum structure 400 may be composed of a first screen drum 410, a second screen drum 420, and a third screen drum 440.

The first screen drum 410 has a cylindrical shape with both ends open, and a plurality of first through holes 412 may be arranged over the entire area.

The diameter of the first through hole 412 was formed to be approximately 5 cm or more so that waste shredded to 5 cm or less could escape through the first through hole 412.

Additionally, a first flange 414 may be formed at one end of the first screen drum 410, that is, at the front end facing the transfer unit 200.

The first flange 414 may have a larger outer diameter than the drum body in which the first through hole 412 is formed and may be formed with a step difference.

In addition, a plurality of first long holes 414a may be formed on one side of the first flange 414 along the circumferential direction.

The first long hole 414a is formed to laterally penetrate the first flange 414 and may have an arc shape of a certain length.

There are eight first long holes 414a shown in FIG. 6, but about four may be formed.

Additionally, insertion protrusions 414b may be integrally formed on the outer peripheral surface of the first flange 414 at an appropriate distance apart along the circumferential direction.

The insertion protrusion 414b may be coupled to the insertion groove 444 of the third screen drum 440, which will be described in detail below.

And the second screen drum 420 is installed to include the first screen drum 410 inside.

The second screen drum 420 also has a cylindrical shape with both ends open, and is formed to be slightly larger in diameter than the first screen drum 410, so that it can be included inside.

And a second flange 422 may be formed at both ends of the second screen drum 420.

The second flange 422 has the same diameter as the first flange 414, and if the first screen drum 410 is included therein, the second flange 422 will come into contact with the first flange 414. You can.

Here, a rotating protrusion 422a may be integrally formed on the second flange 422 to protrude toward the front and rear sides.

The rotating protrusions 422a are formed to be spaced apart along the circumferential direction, and are located in the first long hole 414a and can rotate within the range of the long hole.

Therefore, it is preferable that the width area of the rotating protrusion 422a is formed to be smaller than the arc length of the first long hole 414a.

In addition, eight rotating protrusions 422a may be formed corresponding to the first long hole 414a, but four may be formed and selectively inserted and installed.

In addition, a fastening hole 422b is formed on one surface of each rotary protrusion 422a, and after the rotary protrusion 422a is inserted into the first long hole 414a, the fastening means 424 is rotated in a certain range. The first screen drum 410 can be fixed to the second screen drum 420 by screwing it into the fastening hole 422b.

The fastening means 424 may be a bolt, and the bolt head may be positioned in such a way that it is in close contact with each first long hole 414a.

Meanwhile, a plurality of opening and closing plates 426 of a certain area connecting the second flanges 422 at both ends may be installed along the circumferential direction.

The opening and closing plates 426 are installed in plural numbers spaced apart with a space between them along the circumferential direction, are in close contact with the first through hole 412, and are opened in accordance with the rotation of the second screen drum 420. ) can be adjusted according to the degree of overlap of the opening and closing plate 426.

Additionally, a stopper drum 430 may be installed on the rear side of the second screen drum 420.

The stopper drum 430 is installed at the rear end of the second screen drum 420, supports the first screen drum 410 at the end, and can fix the rotational state of the second screen drum 420. .

The stopper drum 430 may be composed of a stopper flange 432 and an insertion drum 434, and the insertion drum 434 may be cylindrical and be inserted into the end side of the first screen drum 410. .

Therefore, the outer diameter of the insertion drum 434 is the same as or slightly smaller than the inner diameter of the first screen drum 410, so that insertion is possible, and the first screen drum 410 can be supported so that it does not sag.

In addition, the stopper flange 432 may be formed with a stopper long hole 432a, like the first long hole 414a, and a stopper insertion protrusion 432b, like the insertion protrusion 414b.

The stopper long hole 432a is formed through the rotary protrusion 422a of the second screen drum 420, and the stopper insertion protrusion 432b can be coupled to the insertion groove 444 of the third screen drum 440. there is.

The stopper drum 430 can also be rotated and fixed to the second screen drum 420 using the fastening means 424.

The third screen drum 440 fixes the combined stopper drum 430, the first screen drum 410, and the second screen drum 420 inside, and is rotated by the driving unit 330 to adjust the size of the first screen drum 440. A plurality of third through holes 442 may be formed in an array so that the waste that has passed through the through holes 412 is finally dropped.

The third screen drum 440 may be a drum whose overall shape is oval.

Accordingly, the third screen drum 440 has an elliptical shape, has a major axis and a minor axis, and can be rotated by installing a driving roller 332 and a support roller 334 within the rotation radius of the major axis and the minor axis.

In addition, it may be desirable for the third through hole 442 of the third screen drum 440 to be formed larger than the diameter of the first through hole 412.

Additionally, insertion grooves 444 of a certain depth may be formed at both ends of the third screen drum 440 along the inner peripheral direction.

The rotating protrusion 422a of the first screen drum 410 coupled along the insertion groove 444 and the plug insertion protrusion 432b of the cap drum 430 are slidably coupled along the insertion groove 444.

Here, since it is an elliptical third screen drum 440, the length of the insertion protrusion 414b and the stopper insertion protrusion 432b inserted into the insertion groove 444 in the major axis direction is the length of the insertion protrusion inserted into the insertion groove 444 in the minor axis direction. It may be preferable to be longer than the length of (414b) and the stopper insertion protrusion (432b).

In addition, the secondary sorting unit 500 is installed and connected to the primary sorting unit 300 in a direction perpendicular to the primary sorting part 300, so that the sorted waste sorted by the primary sorting part 300 falls on the belt conveyor 316 and moves to be separated by vibration. I do it.

As shown in FIG. 1, the secondary sorting unit 500 may be composed of a vibration plate 510, a vibration generator (not shown), and a blower 520.

As the waste sorted from the primary sorting unit 300 passes through the vibrating plate 510, small-particle waste falls due to the mesh hole and vibration formed in the vibrating plate 510, and a large amount of waste is sorted by particle size. As foreign substances are included, the light foreign substances contained therein can be separated by blowing air on them with the blower 520.

Since the vibration plate 510 and the blower 520 are widely used, detailed descriptions are omitted.

The operation of the screening system for separating household waste according to the present invention configured as described above will be explained with reference to Figure 1 or Figure 5.

Domestic waste is a diverse mix of waste electronic products, plastics, and various types of waste.

Household waste is collected and put into the hopper-shaped shredding unit 100 to be shredded to a certain size.

And the waste shredded in the shredding unit 100 flows into the primary sorting unit 300 through the transfer unit 200.

The first screening unit 300 is first installed with a second screen drum 420 facing the first screen drum 410, and the rotating protrusion 422a formed on the second flange 422 is aligned with the first flange 414. It is inserted into the first long hole 414a.

Subsequently, by rotating the second screen drum 420 within the range of the first long hole 414a, the opening and closing plate 426 can adjust the size of the first through hole 412 of the first screen drum 410. there is.

Referring to FIG. 7, the size of the first through hole 412 is determined according to the overlapping range of the first through hole 412 and the opening and closing plate 426, which is the size necessary for sorting waste of various particle sizes. The size of the ball 412 may be determined.

Once the size of the first through hole 412 is determined, the fastening means 424 is fastened to the rotating protrusion 422a penetrating the first long hole 414a to connect the rotated second screen drum 420 to the first screen drum. The mutual positions are fixed at (410).

And a stopper drum 430 is installed on the other side of the second screen drum 420.

The insertion drum 434 of the stopper drum 430 is located inside the first screen drum 410, and the rotating protrusion 422a of the second flange 422 is located in the stopper hole 432a of the stopper flange 432. is positioned, and the fastening means 424 is fastened to the rotating protrusion 422a to fix the stopper drum 430 to the second screen drum 420.

Installation of the stopper drum 430 not only supports the end of the first screen drum 410 from sagging, but also helps fix the rotational position of the second screen drum 420.

And the first screen drum 410, the second screen drum 420, and the stopper drum 430 are installed inside the third screen drum 440.

This may be possible by sequentially slidingly inserting the insertion protrusion 414b and the stopper insertion protrusion 432b along the insertion grooves 444 formed at both ends of the third screen drum 440.

The drum structure 400 is installed on the base frame 310, which is composed of a floor frame 312 and a support frame 314.

The drum structure 400 is located on the drum support 320 and the driving roller 332, and the support roller 334 is located on the upper side.

By driving the driving unit 330, the drum structure 400 is rotated by the driving roller 332. At this time, the oval-shaped third screen drum 440 has a rotation radius of the long axis of the driving roller 332 and the support roller ( 334) and can be rotated.

Due to the oval shape of the third screen drum 440, the waste placed in the first screen drum 410 has an effect such as vibration due to the increased rotation radius, and the sorting time can be shortened.

Some waste of a certain size is discharged through the first through hole 412 whose size is adjusted in the first screen drum 410, and the discharged waste is discharged through the third through hole 442 of the third screen drum 440. It is discharged and falls to the belt conveyor 316, and the fallen sorted waste is handed over to the secondary sorting unit 500.

In the secondary sorting unit 500, as described above, as the waste passes through the vibrating plate 510, waste with small particles falls due to the mesh hole and vibration formed in the vibrating plate 510, and is sorted by particle size. Since the waste contains a large amount of foreign matter, the light foreign matter contained therein can be separated by blowing air on it with the blower 520.

Meanwhile, Figure 8 is a front view of a sorting system for separating household waste according to another embodiment of the present disclosure.

Identical parts are described by assigning the same number.

By raising and lowering the end of the drum structure 400 in the primary sorting unit 300 to a certain height, the sorted waste can be easily transported inside the drum structure 400.

In detail, the lifting means 600 is installed on the front side of the support frame 314, and the front roller support 336 is folded in one direction.

The lifting means 600 is preferably a cylinder, and the cylinder rod may be chucking installed on the end side of the third screen drum 440.

Additionally, a hinge 336a is additionally installed on the roller support 336, so that when folded around the hinge 336a, the support roller 334 is folded in one direction and does not interfere with the rising and lowering third screen drum 440.

Therefore, after the rotational drive of the drum structure 400 stops, the lifting means 600 tilts the drum structure 400 by applying power in order to transfer the waste selected and remaining inside the first screen drum 410 to the conveyor. It is lifted, and the entire amount of internal waste is moved to one side by its own weight, allowing it to be more easily transferred to the transfer conveyor.

And before that, the roller support 336 is folded around the hinge 336a so as not to interfere with the raising and lowering of the drum structure 400.

As described above, the waste sorting effect can be improved by adjusting the size of the through hole for sorting waste in the cylindrical screen sorting unit.

In addition, when sorting waste of various particle sizes, compatibility can be improved by adjusting the size of the through hole.

In the above, specific embodiments are shown and described. However, it is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

100: crushing unit 200: transport unit
300: Primary selection unit 310: Base frame
312: floor frame 314: support frame
316: Belt conveyor 320: Drum support
330: Drive unit 331: Pulley motor
332: driving roller 334: support roller
336: roller support 400: drum structure
410: first screen drum 412: first through hole
414: 1st flange 414a: 1st long hole
414b: Insertion projection 420: Second screen drum
422: Second flange 422a: Rotating protrusion
422b: fastening hole 424: fastening means
426: Opening/closing plate 430: Stopper drum
432: Stopper flange 432a: Stopper holder
432b: Stopper insertion protrusion 434: Insertion drum
440: Third screen drum 442: Third through hole
444: Insertion groove 500: Secondary selection unit
510: Vibration plate 520: Blower

Claims (4)

A shredding unit that shreds waste to a certain size;
A transfer unit installed to incline upwardly to transport the waste shredded through the crush unit in an upward direction;
A primary sorting unit installed to be connected to the transfer unit to sort the waste by size; and
It includes a secondary sorting unit installed in a direction perpendicular to the primary sorting unit to separate the sorted waste sorted from the primary sorting unit by vibration,
The first selection unit is,
A base frame supported on the floor,
A drum structure installed as a cylindrical screen on the base frame and capable of sorting waste of various particle sizes by adjusting the diameter of the through hole;
Drum supports installed in pairs facing each other along the base frame, the inner peripheral surface of which supports the rotation of the drum structure with an arcuate surface, and
It includes a pair of driving units installed at the front and rear on the base frame to rotate the drum structure,
The drum structure is,
A first screen drum in which a plurality of first through holes are formed on the cylinder to discharge the waste smaller than the diameter size of the first through holes;
It is installed to include the first screen drum in close contact with the inside, and opening and closing plates of a certain area are spaced apart along the circumferential direction so that the diameter size of the first through hole is adjusted within a certain range according to the degree of overlap of the opening and closing plates. A second screen drum rotatably installed,
a stopper drum installed at one end of the second screen drum, supporting the first screen drum at an end side, and fixing the rotational state of the second screen drum; and
The combined stopper drum, the first screen drum, and the second screen drum are fixedly installed inside and rotated by the drive unit to finally drop the waste that has passed through the first through hole whose size is adjusted. A third screen drum in which through holes are formed,
A screening system for separating household waste, including.
delete ◈Claim 3 was abandoned upon payment of the setup registration fee.◈ According to paragraph 1,
The third screen drum is an oval-shaped drum, and the third through hole is formed to be larger in diameter than the first through hole.
According to paragraph 1,
A first flange is formed on one end of the first screen drum, and a plurality of first long holes are formed along the circumferential direction of the first flange,
A stopper flange is also formed on the stopper drum, and a plurality of stopper holes are formed along the circumferential direction of the stopper flange,
Second flanges are formed on both ends of the second screen drum, and a plurality of rotating protrusions are formed along the circumferential surface of the second flange to face forward and backward, and the rotating protrusions are formed in the first long hole and the stopper long hole. After each insertion, the second screen drum is rotated within the range of the first long hole and the stopper long hole and is fixed by a fastening means in the rotating state.

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