KR20150021331A

KR20150021331A - Sorting System and Method for Waste of Construction for Recycling

Info

Publication number: KR20150021331A
Application number: KR20130098561A
Authority: KR
Inventors: 정낙현
Original assignee: 정낙현
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2015-03-02

Abstract

The present invention relates to a system and a method for sorting waste concrete powder, sand, and aggregates so that waste aggregates generated by building demolition are pulverized, sorted, and recycled. The present invention provides a construction waste sorting system including an inclined path where construction wastes are supplied from above and the inclination angle increases toward a lower end portion; a plurality of crush rollers that are provided in a middle end of an inclined surface of the inclined path and presses the construction wastes while rotating so that the construction wastes moved downward along the inclined surface are crushed; a screener that has a plurality of layers which are provided to be inclined to one side in the lower end portion of the inclined path, a perpendicularly upward side of an upper end being open for crushed construction waste insertion, perpendicularly downward sides of lower ends of the respective layers being open for screened construction waste discharge, lower surfaces of the respective layers having predetermined meshes, and the screener screening the crushed construction wastes by size; and a plurality of collection units that accommodate, by particle size, the construction wastes screened by particle size by the screener, in which each of the layers of the screener has a mesh toward a lower portion and the screener vibrates at a predetermined frequency.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste sorting system for recycling construction waste,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction waste classification system for construction waste recycling, and more particularly, to a construction waste classification system for recycling construction wastes. More particularly, the present invention relates to a construction waste classification system for finely dividing waste, .

Concrete is often used as construction material. These concrete are made by mixing aggregates such as sand and gravel into cement and solidifying them. At this time, the demolition of the old building and the new space, and the reconstruction work to repair or reconstruct the old or degraded building, the concrete structure that is building is crushed and many construction wastes are generated. Many construction wastes including waste aggregate are being landfilled immediately.

However, when the landfill such as the waste aggregate as described above is buried, the soil and the ground water are contaminated and the natural environment is destroyed. Also, it is difficult to secure a space for the landfill treatment, and the construction waste can not be recycled, There has been a problem that resources are used inefficiently.

1 is a flow chart of a conventional process for crushing and separating and sorting construction waste. As shown in FIG. 1, the collected and transported construction waste is a mixture of irregularly sized waste concrete blocks and various kinds of waste. When the waste concrete block is put through the vibration hopper, sand and aggregate mixed in the waste concrete are selected through the drawing process and the cylindrical rotating separator (S10). Then, it is charged into a jaw crusher or a hammer crusher to perform primary crushing to reduce the size (S12). Small-sized crushed construction wastes are passed through a screen process by size, separated by strong winds, and subjected to a separation process in which reinforcing bars and metal pieces are separated by strong permanent magnets (S14). As a result of this separation process, the waste concrete is eventually discharged to a size of about 25 to 45 mm.

However, the conventional construction waste sorting process has the following problems. First, in this process, pure sand could not be obtained, and because there were many cement particles on the surface of the gravel to be discharged, there was a limit to reuse as aggregate. In order to recycle as construction sand, it was necessary to thoroughly wash the shredded sand to completely remove the cement. Also, since the transferring process and the sorting process are not performed as a single process, the process is complicated.

Accordingly, there is a need for a system and method for high productivity that simultaneously transports construction waste to concrete bonsai, sand, and fine aggregate through automated processes.

Patent No. 10-0545927 Patent No. 10-0464662

Accordingly, the present invention has been made to solve the above-described problems.

An object of the present invention is to provide a system and method for collecting and sorting waste concrete bonsai, sand, and aggregate by sorting and collecting waste aggregates generated in a demolition process of a building by particle size.

Hereinafter, specific means for achieving the object of the present invention will be described.

SUMMARY OF THE INVENTION A first object of the present invention is to provide a method of manufacturing a building, which comprises: a ramp having a lowered construction waste at an upper portion thereof and a higher inclination angle toward a lower end portion thereof; A plurality of crushing rollers provided in the slope stop of the ramp and rotating and pressurizing the construction waste descending along the slope; And a plurality of layers sloped to one side of the lower end of the ramp, the vertically upper portion of the upper portion is opened so that the shredded construction waste is injected, and the lower portion of the lower portion And the lower surface of each layer is configured to have a predetermined mesh to sort the scrapped construction waste by size; And a plurality of reject means for receiving the construction waste sorted by the particle size in each particle size, wherein each layer of the separator is composed of a higher mesh as the lower portion is closer to the lower portion, And a construction waste sorting system configured to vibrate.

The inclined surface of the ramp may be made of a metal material.

Wherein the ramp comprises: a first ramp, where the construction waste is delivered to the upper portion and formed at a slope of 30 to 35 degrees; And a second ramp configured to extend from the first ramp and configured to have a slope of 45 to 50 degrees, and the crushing roller may include at least one of each of the first ramp and the second ramp.

Wherein the ramp comprises: a first ramp, where the construction waste is delivered to the upper portion and formed at a slope of 30 to 35 degrees; And a second ramp configured to extend from the first ramp and configured to have a slope of 45 to 50 degrees, wherein the crushing roller is disposed in the first ramp and has at least one A first crushing roller; And at least one second crushing roller provided in the second ramp and having a diameter of 0.2 to 0.7 m.

And an electromagnet disposed below the first crushing roller and collecting the reinforcing bars contained in the construction waste crushed by the first crushing roller.

And a dust collector for sucking and collecting the construction waste crushed at a vertical position above the ramp or vertically above the lower end of the sorter.

Wherein the selected construction waste is connected to the remaining layers except for the lowest layer of the sorter, and the rotary shaft is inclined at a predetermined angle toward the one side, and is configured to rotate at a predetermined angular velocity about the rotation axis, A cylindrical tubular body having a screw thread and a cylindrical surface formed of a predetermined mesh; And a first water rejection unit provided at a lower side of the other side of the rotary kiln; And a second water rejection unit disposed at a lower portion of the tubular body except for the rejection unit.

And a transfer conveyor provided between the centrifugal ejector and the sorter to transfer the selected construction waste from one side of the sorter to one side of the centrifugal ejector.

A second object of the present invention is to provide a construction waste disposal system, comprising: a delivering step of dropping construction waste to the upper end of a first ramp, which is an embodiment of the construction waste sorting system according to claim 7; A first crushing step of crushing the construction waste to which the first crushing roller, which is a constituent of the construction waste classification system, has been dropped; A second crushing step of crushing the construction waste, which is crushed by the first crushing roller and which is a constituent of the construction waste sorting system, and crushed into a second ramp, which is a constituent of the construction waste sorting system; A sorting step of sorting the construction waste having a diameter of 25 mm or less to 5 mm or less, 5 mm or less to 1 mm or more, and 1 mm or less, the construction waste being crushed by the second crushing roller; And a discharging step of discharging the construction waste having a diameter of 1 mm or less from the construction waste having a diameter of 25 mm or less to 5 mm or more and 5 mm or less to 1 mm or more, as a constitution of the construction waste sorting system A method can be provided.

As described above, the present invention has the following effects.

First, according to the present invention, when the construction waste is inputted into the system regardless of the size, the efficiency is improved because the classification is made.

Secondly, according to the present invention, since the construction waste is crushed, sorted and transferred at once, the process is shortened and the workload of the worker is reduced.

Thirdly, according to the present invention, since dust is dropped at an optimum angle according to the size of the construction waste to be crushed, there is an effect that less dust is generated, an appropriate load is maintained on the machine, and the transportation is smoothly performed.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and, together with the description, And shall not be interpreted.
1 is a flowchart showing a conventional construction waste classification method,
2 is a side view of a ramp according to an embodiment of the present invention,
3 is a plan view of a shredding roller according to an embodiment of the present invention,
4 is a side view of a sorter according to an embodiment of the present invention,
5 is a side view of a centrifugal ejector according to an embodiment of the present invention,
6 is a flowchart of a construction waste classification system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following detailed description of the operation principle of the preferred embodiment of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, it includes not only a case where it is directly connected but also a case where the other part is indirectly connected with another part in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

The construction waste sorting system according to an embodiment of the present invention may be composed of a ramp, a crushing roller, a separator 100, a conveying conveyor, a centrifugal ejector 200, a dust collector, and a rejector. In the present invention, 25 to 5 mm of construction waste 10 is defined as aggregate, 5 to 1 mm of construction waste 10 is defined as sand, and 1 mm or less of construction waste 10 is defined as concrete bonsai. These can be automatically and precisely classified by the construction waste classification system according to an embodiment of the present invention.

2 is a side view showing a ramp according to one embodiment of the present invention. As shown in FIG. 2, the first ramp 1 and the second ramp 3 may be formed. The ramp may be configured at a predetermined tilt angle such that the construction waste 10 is dropped at the top and dropped at an appropriate rate not to load the crushing roller. At the bottom of the ramp, a separator (100) may be provided to screen the shredded construction waste (10). Also, the inclined surface of the ramp can be made of a metal material for smooth dropping and crushing. In addition, it is preferable that the particles of the construction waste 10 gradually increase in accordance with the progress of the crushing, and thus the grains of the construction waste 10 gradually increase as the inclination angle of the slope falls.

The first ramp 1 is defined as the ramp at which the construction waste 10 to be dropped is first encountered. The inclination angle is preferably 30 to 35 degrees. This is to regulate the falling rate of large lumps of construction waste. If the inclination angle is less than 30 degrees, it may be difficult to drop, especially in the case of wet wastes. If the inclination angle is more than 35 degrees, it will drop in a large amount, and severe noise may be generated at this time. Further, an excessive load may be applied to the first crushing roller 5. The first crushing roller 5 may be provided at the end of the first ramp 1 and the construction waste 10 is first crushed into a mass of 25 to 50 mm in diameter or less.

The second ramp 3 is defined as a ramp formed subsequent to the first ramp 1. The inclination angle is preferably set to 40 to 50 degrees. This is to give a suitable falling rate of the small construction waste 10 mass. Drops below 40 degrees may be difficult. Since the particles of the construction waste 10 have become finer, an angle larger than the angle at the first ramp 1 is required for a smooth fall. When the inclination angle is more than 50 degrees, the dropping speed is increased and dust may be generated severely. The second crushing roller 7 can be provided at the end of the second ramp 3 and the construction waste 10 is crushed into a mass having a diameter of 25 mm or less. By providing such a ramp at multiple inclination angles, a proper falling speed of falling falling construction waste 10 can be realized.

3 is a plan view showing a shredding roller according to one embodiment of the present invention. 3, the crushing roller according to an embodiment of the present invention may be divided into a first crushing roller 5 and a second crushing roller 7. Each shredding roller can be composed of a cylindrical roller having a plurality of blades or protrusions for effective crushing. The first crushing roller 5 crushes the construction waste 10 into a mass of 25 to 50 mm in diameter or less through the first crushing. The second crushing roller 7 is used to crush the construction waste 10 into a mass having a diameter of 25 mm or less. A funnel plate for converging construction waste 10 may be provided in front of each crushing roller. In an embodiment of the present invention, the first crushing roller 5 has a diameter of 0.7 to 1.5 m and the second crushing roller 7 has a diameter of 0.2 to 0.7 m.

Also, a vinyl 9 may be provided on the upper surface of the ramp. The vinyl (9) prevents the cement dust generated during the crushing of the construction waste (10) from being discharged to the atmosphere. At this time, the interruption of the vinyl 9 can be opened and connected to the dust collector. With such a constitution, the vinyl (9) has an effect of prevention of environmental pollution and recycling of cement.

Regarding the sorter 100, FIG. 4 is a side view showing a sorter according to an embodiment of the present invention. As shown in FIG. 4, the sorter 100 according to an embodiment of the present invention may include three layers of first, second, and third selection layers 110a, 100b, and 100c. Each sorting layer may include an inlet 130, which is a duct that opens vertically upward, and first, second, and third collectors 120a, b, and c, which are ducts that open vertically downward. And may be configured to be inclined in the direction of the first, second, and third collection ports 120a, 120b, and 120c at the introduction port 130. The construction wastes 10 that have been crushed in the ramp are introduced into the introduction port 130 and the first, second and third collection ports 120a, 120b, The third collection port 120c is directly connected to the concrete bonsai receipt rejection and the first and second collection ports 120a and 120b are connected to the centrifugal ejector 200 through the conveying conveyor.

The sorting machine 100 selectively collects and transports the crushed construction waste 10 by particle size through the construction and the connection relationship. Particularly, a vibration motor for applying vibration to enhance the sorting function can be provided. The first selection layer 110a is filled with the construction waste 10 having a diameter of 25 mm or less and the lower surface of the first selection layer 110a may be composed of a plurality of rollers having a mesh having a diameter of 5 mm or less. The construction waste 10 having a diameter of 5 mm or less and having passed through the first selection layer 110a is dropped vertically down into the second selection layer 110b and the lower surface of the second selection layer 110b has a diameter of 1 mm or less Lt; RTI ID = 0.0 > mesh. &Lt; / RTI > The third sorting layer 110c is configured such that the construction waste 10 having a diameter of 1 mm or less and passing through the second sorting layer 110b is vertically downwardly dropped and converged.

5 is a side view of a centrifugal ejector according to an embodiment of the present invention. 5, the centrifugal ejector 200 according to an embodiment of the present invention includes a rotator 210 having a mesh of 1 mm or less in diameter and having threads on the inner surface of a cylinder, The introduction port 220 may be provided so that the selected construction waste 10 may be introduced into one side. A first rejection 240a may be provided in the lengthwise direction of the rotary drum 210 so that the construction waste 210 having a diameter of 1 mm or less selected by centrifugal force is discharged. And a second rejection unit 240b may be provided on the other side of the rotator 210 so as to discharge the construction waste 210 having a diameter of 1 mm or more. This is because the cement powder or the like strongly adhered to the sand or aggregate is difficult to be selected by the separator 100, so that the precision of the selection using the centrifugal force is improved.

The centrifugal ejector 200 can be configured to increase the discharge efficiency by mixing water with the construction waste 10. [ The construction waste 10 is rotated together with the water as the polar solvent, thereby improving the discharging effect. In this case, the discharged construction waste 10 must be dehydrated, and a microwave dryer or a general dryer may be used.

The dust collector sucks and collects the concrete bonsai such as the cement dust generated from the vinyl (9), the sorter (100), the conveyor conveyor, and the centrifugal ejector (200). Therefore, the concrete bonsai generated in the process of crushing, transporting, and discharging can be accumulated without flowing out from the construction waste sorting system. In the sorter 100, a suction port is provided on the lower vertical portion of the first selection layer 110a, and a suction port 230 is provided on the upper vertical portion of the centrifugal ejector 200. [

FIG. 6 is a flowchart of a construction waste classification system according to an embodiment of the present invention, and FIG. 7 is a flowchart of a construction waste disposal system according to an embodiment of the present invention. Fig. 2 is a flowchart of a construction waste classification method according to an example. As shown in FIGS. 6 and 7, the construction waste sorting system according to an embodiment of the present invention can be composed of a ramp, a separator, a centrifugal discharger, a dust collector, and the like.

First, the construction waste 10 accumulated in the construction waste storage area is dropped onto the first ramp 1 (S100). The construction waste 10, which is present in most of the lumps, falls along the first ramp 1 having an inclination angle of 30 to 35 degrees and is crushed to a diameter of 25 to 50 mm or less by the first crushing roller 5. By this critical inclination angle, the construction waste 10 can maintain a proper falling speed at which the first crushing roller 5 is not overloaded (first crushing step, S200).

The construction waste 10 having a diameter of 25 to 50 mm or less broken by the first crushing roller 5 reaches the second ramp 3 and falls along the second ramp 3 having an inclination angle of 40 to 50 degrees And crushed to a diameter of 25 mm or less by the second crushing roller (7). By this critical inclination angle, the construction waste 10 can maintain mobility while minimizing dust generation (second crushing step, S300)

The construction waste 10 crushed by the second crushing roller 7 is introduced into the separator 100 via the ramp. The construction waste 10 put on top of the first selection layer 110a of the sorter 100 is selected by a plurality of rollers having a 5 mm diameter mesh. The construction waste 10 having a diameter of more than 5 mm but less than 25 mm is passed through the first sorting layer 110a as it is as a first conveying conveyor. The construction waste 10 having a diameter of 5 mm or more and 25 mm or less, which has been introduced into the first conveying conveyor, is introduced into the first centrifugal ejector, which is one of the centrifugal ejectors 200.

The construction waste 10 having a diameter of 5 mm or less, which has passed through a plurality of rollers having a mesh of 5 mm in diameter in the first selection layer 110a, is introduced into the second selection layer 110b. The construction waste 10 having a diameter of 5 mm or less is selected by a screen on the lower surface of the second selection layer 110b having a 1 mm-diameter mesh. The construction waste 10 having a diameter of more than 1 mm and less than 5 mm is passed through the second sorting layer 110b as it is as it is as a second conveying conveyor. The construction waste (10) having a diameter of more than 1 mm and less than 5 mm, which is introduced into the second conveying conveyor, is introduced into a second centrifugal ejector, which is one of the centrifugal ejectors (200).

The construction waste 10 having a diameter of 1 mm or less and passed through a screen having a mesh of 1 mm in diameter in the second selection layer 110c is put into the third selection layer 110c. The construction waste 10 having a diameter of 1 mm or less is defined as a concrete bonsai and is accepted as it is in the concrete bonsai rejection (identification step S400).

In the first centrifugal ejector and the second centrifugal ejector, work is carried out to eject the concrete waste material 10 having a diameter of more than 5 mm and less than 25 mm and the concrete waste material 10 having a diameter of more than 1 mm and less than 5 mm. This is because it is inadequate to simply discharge gravity, and a centrifugal force is added to discharge the concrete bonsai adhering to the construction waste. Each centrifugal ejector 200 is provided with a rotary drum 210 having a mesh of 1 mm in diameter and discharges the construction waste 10, that is, concrete bonsai, having a diameter of 1 mm or less through rotation. Through this, the construction waste (10) having a diameter exceeding 5 mm and less than 25 mm and the construction waste (10) having a diameter exceeding 1 mm and 5 mm or less can obtain a relatively pure state in which the concrete bonsai is discharged (discharge step, S500).

The relatively pure aggregate (construction waste having a diameter of more than 5 mm and less than 25 mm) and sand (construction waste having a diameter of more than 1 mm and 5 mm or less) obtained at this time have an effect of minimizing cement dust and facilitating recycling. That is, the productivity of the construction waste classification system is improved. In addition, all of these processes can be configured to be automated. The process is shortened and economic efficiency and productivity are improved as compared with the conventional construction waste classification system.

The definition of the diameter of the mesh, concrete bonsai, sand, and aggregate used in the embodiment of the present invention is merely an example, and the mesh and the definition may be changed as needed within the scope of the object of the present invention.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

1: first ramp
3: second ramp
5: First crushing roller
7: Second crushing roller
9: Vinyl
10: Construction waste
100: selector
110a, b, c: 1st, 2nd and 3rd selection layers
120a, b, c: First, second and third collecting bases
130: introduction port
200: Centrifugal ejector
210: Tradition Tradition
220: inlet
230: inlet
240a, b: No. 4 and 5 collection bases

Claims

A slope in which the construction waste is dropped on the upper portion and the inclination angle increases toward the lower portion;
A plurality of crushing rollers provided in the slope stop of the ramp and rotating and pressurizing the construction waste descending along the slope;
And a plurality of layers sloped to one side of the lower end of the ramp, the vertically upper portion of the upper portion is opened so that the shredded construction waste is injected, and the lower portion of the lower portion And the lower surface of each layer is configured to have a predetermined mesh to sort the scrapped construction waste by size; And
A plurality of reject means for receiving the construction waste selected by the particle size according to the particle size, respectively;
Lt; / RTI >
Wherein each layer of the sorter is composed of a denser mesh as it is closer to the lower part, and the sorter is configured to vibrate at a predetermined frequency.

The method according to claim 1,
Wherein the inclined surface of the ramp is made of a metal material.

The method according to claim 1,
Preferably,
A first ramp, where the construction waste is delivered to the upper portion and is formed at a slope of 30 to 35 degrees; And
A second ramp configured to extend from the first ramp and configured at an angle of 45 to 50 degrees;
Lt; / RTI >
Wherein the crushing roller is provided with at least one of each of the first ramp and the second ramp.

The method according to claim 1,
Preferably,
A first ramp, where the construction waste is delivered to the upper portion and is formed at a slope of 30 to 35 degrees; And
A second ramp configured to extend from the first ramp and configured at an angle of 45 to 50 degrees;
Lt; / RTI >
The crushing roller
At least one first crushing roller provided in the first ramp and having a diameter of 0.7 to 1.5 m; And
At least one second crushing roller provided in the second ramp and having a diameter of 0.2 to 0.7 m;
And a construction waste classification system.

5. The method of claim 4,
An electromagnet disposed below the first crushing roller and collecting the reinforcing bars contained in the construction waste crushed by the first crushing roller;
Further comprising a construction waste classification system.

The method according to claim 1,
A dust collector for sucking and collecting the construction waste that has been crushed in a vertical direction above the ramp or vertically above the lower end of the sorter;
Further comprising: a construction waste classification system.

The method according to claim 1,
Wherein the selected construction waste is connected to the remaining layers except for the lowest layer of the sorter, and the rotary shaft is inclined at a predetermined angle toward the one side, and is configured to rotate at a predetermined angular velocity about the rotation axis, A cylindrical tubular body having a screw thread and a cylindrical surface formed of a predetermined mesh; And
A first water rejection provided at the lower part of the other side of the rotary kiln; A second centrifugal ejector provided at a lower portion of the rotor, the second centrifugal ejector including the second rotor;
Further comprising: a construction waste classification system.

8. The method of claim 7,
A conveying conveyor provided between the centrifugal ejector and the sorter to convey the selected construction waste from one side of the sorter to one side of the centrifugal ejector;
Further comprising: a construction waste classification system.

A step of dropping construction waste at the top of a first ramp, which is an embodiment of the construction waste classification system according to claim 7;
A first crushing step of crushing the construction waste to which the first crushing roller, which is a constituent of the construction waste classification system, has been dropped;
A second crushing step of crushing the construction waste, which is crushed by the first crushing roller, which is a component of the construction waste sorting system, and which is injected into a second ramp, which is an embodiment of the construction waste sorting system;
A sorting step of sorting the construction waste having a diameter of 25 mm or less to 5 mm or less, 5 mm or less to 1 mm or more, and 1 mm or less, the construction waste being crushed by the second crushing roller; And
A discharging step of discharging the construction waste having a diameter of 1 mm or less from the construction waste having a diameter of 25 mm or less to 5 mm or more and 5 mm or less to 1 mm or more;
And a method for classifying construction waste.