KR102196593B1 - System for producing recycled aggregates from construction waste - Google Patents

Abstract

The present invention relates to a grinding machine for recycled aggregate crushed during an intermediate treatment process of construction waste. A system for producing recycled aggregate from construction waste crushes raw aggregate using a crusher, rubs and grinds the crushed material between a lower liner and an upper liner with each other, and rubs and grinds the crushed material with the lower liner and the upper liner to improve the grinding efficiency of the crushed material and, as a result, effectively separate foreign substances such as mortar, etc. on the surface of the raw aggregate. In addition, a sharp angular part is removed to obtain recycled aggregate close to a spherical shape, and a concave diagonal groove is formed in the lower liner to efficiently discharge foreign substances. Therefore, by reducing the amount of construction waste, environmental pollution can be prevented, and the production cost of recycled aggregate can be significantly reduced.

Description

System for producing recycled aggregates from construction waste

The present invention relates to a system for producing recycled aggregate from construction waste, and to a system for producing recycled aggregate by extracting raw stones such as gravel excluding mortar from construction waste such as waste concrete.

The construction industry has a great influence on the development of the industrial economy in terms of the formation of industrial ash overhead capital. Korea has achieved rapid overall growth around the 1970s, and the construction industry has grown rapidly due to the establishment of industrial infrastructure and improvement of the housing supply rate to improve the quality of life of the people.

On the other hand, social problems arising in the process of industrialization are also gradually increasing, one of which is the increase in waste generation and its treatment. In particular, in order to treat a large amount of waste concrete that occurs when the concrete structure has reached the end of its structural life, there is a problem in that enormous treatment plant sites and treatment costs are consumed.

Waste concrete is cured by adding gemstones such as gravel to a cement pool (made like glue by crushing cement with water) using a hydration reaction in which mortar and cement react with water and harden. The waste concrete In the case of extracting the gemstones such as gravel, the total volume of the waste concrete can be reduced to solve the problem of lack of a disposal site and increase in disposal costs of waste concrete, as well as recycling the extracted gemstones, thereby reducing production costs. There is an advantage that can be saved.

Accordingly, technologies for using chemicals and for sorting soil dust have been proposed to efficiently remove foreign substances such as mortar, but the cost of using chemicals is continuously incurred, increasing the burden and polluting the environment. There is a problem to let you. Therefore, there is a need for research on an effective method to extract gemstones such as gravel from construction waste.

Republic of Korea Patent Publication No. 10-0413325

The present invention is to solve the above problems, by crushing the raw aggregate and grinding the crushed crushed products by rubbing against each other, removing foreign substances such as mortar on the surface of the raw aggregate, Its purpose is to provide a system for producing recycled aggregate from construction waste that can obtain recycled aggregate and increase grinding efficiency by rubbing and grinding on a plane without rotating the raw aggregate and quickly discharge the ground recycled aggregate.

The present invention is a crusher for crushing waste concrete mass; And a crusher connected to the crusher to grind the crusher supplied from the crusher,

The grinder is disposed to be inclined downward toward the ground and is installed to be retractable and has a porous lower liner having an uneven upper surface; A forward and backward driving means for forcibly moving the lower liner back and forth; It is spaced apart from the top of the lower liner with a certain gap, and the surface of the recycled aggregate is peeled off from the surface of the recycled aggregate rubbing between the lower liner and the upper liner by a rotational force having an uneven shape, and the recycled aggregate is ground into a spherical shape,

The lower liner provides a system for producing recycled aggregate from construction waste, characterized in that an intaglio groove is formed on the upper surface of the uneven plate material, and is formed deeper from the uneven start portion to the foreign material discharge hole.

In the system for producing recycled aggregate from construction waste according to the present invention, the raw aggregate is crushed using a crusher, the crushed material is rubbed against each other between the lower liner and the upper liner, and the crushed material is rubbed against the lower liner and the upper liner. By grinding, the grinding efficiency of the crushed material is improved, and consequently, foreign substances such as mortar on the surface of the raw aggregate are effectively peeled off, and the sharp angled portion is removed to obtain a circular aggregate close to a spherical shape. Since the diagonal grooves are formed, foreign substances can be efficiently discharged, so the amount of construction waste can be reduced to prevent environmental pollution, and the production cost of recycled aggregate can be significantly reduced.

1 is an overall configuration diagram showing a system for producing recycled aggregate from construction waste according to the present invention.
2 is a block diagram of a grinder of a system for producing recycled aggregate from construction waste according to the present invention.
3 is an enlarged view of the main parts of the lower liner and the upper liner applied to the grinder of the system for producing recycled aggregate from construction waste according to the present invention.
4 is a front view of a lower liner applied to a grinder of a system for producing recycled aggregate from construction waste according to the present invention.
Figure 5 is a top view of a lower rider applied to the masochrome crusher of the system for producing recycled aggregate from construction waste according to the present invention.
Figure 6 is a side view of a lower rider applied to the masochrome crusher of the system for producing recycled aggregate from construction waste according to the present invention.
7A and 7B are a side view and a front view showing an installation structure of a frame applied to a grinder of a system for producing recycled aggregate from construction waste according to the present invention, respectively.
8 is a block diagram of a forward and backward driving means applied to a grinder of a system for producing recycled aggregate from construction waste according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in more detail with reference to the accompanying drawings in order to describe the present invention in more detail. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

1 is an overall configuration diagram showing a system for producing recycled aggregate from construction waste according to the present invention. 1, a crusher for crushing waste concrete lumps; A selection screen 200 connected to the crusher 100 to select crushed substances having a predetermined particle size or less from the crushed material supplied from the crushing machine; And a grinder 300 connected to the sorting screen to grind crushed matter less than a preset particle diameter supplied from the sorting screen. However, the selection screen may be selectively included.

The crusher uses one or more of a jaw crusher, a cone crusher, a roll crusher, and an impact crusher. Specifically, a jaw crusher, cone crusher, roll crusher or impact crusher is used. In addition, it includes an inlet and an outlet for putting construction waste into the crusher.

In addition, the selection screen is composed of a cylindrical screen or a vibration screen. In the sorting screen, the cylindrical screen may be formed in a cylindrical shape with an empty inside, and the overall circumference is formed by perforating a plurality of perforated holes having a size corresponding to a preset particle diameter, and the vibration screen is formed by perforating the vibration screen to a preset particle diameter. It is configured to vibrate by vibrating means a plate having a plurality of sorting holes composed of a size. By including the sorting screen as described above, the crushed material having a relatively small particle size can be selected and supplied to the crusher.

As shown in FIG. 2, the grinder of the system for producing recycled aggregate from construction waste according to the present invention is in a state in which the lower liner 10 and the upper liner 20 are spaced apart at a predetermined interval, and the lower liner 10 is It moves back and forth and the upper liner 20 rotates in a caterpillar track (direction of progress of the recycled aggregate), peeling off foreign substances (for example, mortar) from the surface of the recycled aggregate by mutual friction of the recycled aggregate, and removing sharp parts of the recycled aggregate. will be.

2 to 4, the lower liner 10 is a plate material whose upper surface is uneven (the convex portion also performs a function of transferring the recycled aggregate (A) to the outlet) in order to increase the grinding efficiency of the recycled aggregate. It is porous with a plurality of foreign matter discharge holes 11 to discharge foreign matter and fine powder peeled off.

The lower liner 10 may be installed through a separate frame 12. When the frame 12 is applied, the lower liner 10 is detachably fastened to the upper surface of the frame 12 through a fastener, and moves back and forth together with the frame 10.

At this time, all parts of the lower liner 10 will not be equally worn and partial wear will occur, and when this part is worn, the lower liner 10 can be replaced without replacing the entire lower liner 10 10) is divided into multiple pieces.

The lower liner 10 is disposed to be inclined downward toward the ground to allow natural discharge of the recycled aggregate (A).

4, the lower liner 10 is disposed under the upper liner 20 to provide a basic space for grinding, and when grinding the recycled aggregate (A), the recycled aggregate (A) and/or foreign matter Blocking jaws 13 are formed so that (W) does not deviate through both sides of the lower liner 10 in the width direction.

Like the lower liner 10, the upper liner 20 has an uneven upper surface to increase grinding efficiency. Since the upper liner 20 will only perform grinding of the recycled aggregate (A), a foreign material discharge hole will not be formed.

The upper liner 20 may be ground even if it is in a stationary state because the lower liner 10 moves back and forth, but the recycled aggregate (A) can be discharged naturally along the slope of the lower liner 10 in a caterpillar track. It is constructed in a rotating manner.

For example, the upper liner 20 may be manufactured and driven in a caterpillar type, or it may be detachably coupled to the surface of a separate caterpillar belt 21 through a fastener and driven through the belt 21. .

The rotational direction of the upper liner 20 is maintained in a direction (clockwise as in Fig. 2) that does not interfere with the discharge of the recycled aggregate (A).

It is the same as the lower liner 10 that the upper liner 20 is divided into a plurality for maintenance.

Since the structure and driving method of the belt 21 are the same as those of the existing belt, a detailed description will be omitted.

However, one or more pressing rollers may be provided to press the recycled aggregate (A) toward the lower liner 10 during grinding of the recycled aggregate (A).

Each of the lower liner 10 and the upper liner 20 is made of special steel (such as high manganese) to minimize wear due to friction with the recycled aggregate (A).

The formation of the uneven portions in the lower liner 10 and the upper liner 20 is to increase grinding efficiency through the convex portions, and the uneven portions are alternately formed in the longitudinal direction of the lower liner 10 and the upper liner 20. .

In addition, as shown in FIGS. 5 and 6, the lower liner 10 has an intaglio groove 16 formed on the upper surface of the uneven plate material, and is formed deeper from the uneven start portion to the foreign matter discharge hole. Small-sized foreign matters are collected in the diagonal grooves, and as they move back and forth, the foreign matters are pushed into the foreign matter discharge hole to efficiently discharge the foreign matters, and the friction with the upper liner increases, so that it is easy to sphericalize the recycled aggregate. The diameter of the diagonal groove is not particularly limited, but specifically, may be smaller than the size of the recycled aggregate and larger than the size of the foreign matter discharged.

In addition, the upper liner 20 may further include a crushing unit for pulverizing the crushed material on the upper end.

Specifically, the crushing part includes a pair of support parts and a cover part on both sides of the upper liner, the support part includes a guide panel and a vertical support, the upper part of the cover part is provided with a plurality of pressing rollers or presses, and the upper part of the cover part A separator is provided at the end of the liner to control the amount of pulverized pulverized material moving.

The pressurizing roller or pressurizing press of the cover part serves to crush the crushed material flowing into the upper liner. The pressing roller may pulverize the crushed material through friction between the upper liner and the crushed material while rotating, and the pressing press may crush the crushed material by using a force that moves up and down.

The separation membrane may be made of plastic of a flexible material so as not to interfere with the movement of the pulverized material.

As shown in FIG. 7, the frame 12 must be installed so that left and right twisting does not occur during linear reciprocating movement, for example, guide rails 15 are installed at a predetermined interval at the bottom of the frame 12, and the frame 12 ) At the bottom of the guide rail 15 is provided with a roller 14 that moves linearly and reciprocally.

If frame 12 is not applied, roller 14 will be installed on lower liner 10.

For example, the lower liner 10, the frame 12, and the forward and backward driving means are height adjustment means (e.g., a cylinder, a height of a stretchable double structure) so that the grinding space can be adjusted according to the particle size of the recycled aggregate (A). Adjustable legs) can be installed to be adjustable in height. Although this height adjustment structure is not specifically shown in the drawings, it will be sufficiently implemented by those skilled in the art.

The forward and backward driving means for reciprocating the lower liner 10 back and forth is connected to the driving motor 30, the driving motor 30 and the frame 12, as shown in FIG. 8, and the driving motor 30 It consists of a crankshaft (31) that converts the rotational force of the linear reciprocating motion.

In the drawings, reference numeral 1 denotes a product conveying conveyor for conveying the recycled aggregate (A), and 2 denotes a foreign matter conveying conveyor that conveys the foreign matter (W). Specifically, the product transfer conveyor for transferring the recycled aggregate rotates in the opposite direction to the foreign material transfer conveyor for transferring the foreign material. For example, when the product conveying conveyor rotates counterclockwise based on FIG. 1, the foreign matter conveying conveyor rotates clockwise to prevent foreign matters from being mixed into the product conveying conveyor.

The operation of the system for producing recycled aggregate from construction waste according to the present invention is as follows.

The crushed material (referring to a state in which there is a foreign substance such as mortar on the surface and a sharp portion) that has passed through the crusher and/or the screening screen is placed in the space between the lower liner 10 and the upper liner 20, that is, on the upper surface of the lower liner 10. Is put in.

Prior to the input of the crushed material, the lower liner 10 is moving back and forth through the forward and backward driving means, and the upper liner 20 rotates infinitely in the discharge direction of the recycled aggregate A (left as referenced in FIG. 1).

Therefore, the crushed material injected between the lower liner 10 and the upper liner 20 is compressed by the lower liner 10 and the upper liner 20 in the gap between the lower liner 10 and the upper liner 20, During the process, foreign substances on the surface of the crushed material are peeled off by physical impact, and sharp parts are also removed.

Further, the crushed material is more effectively crushed between the convex portions of the convex portions facing the lower liner 10 and the upper liner 20, so that the peeling of foreign substances and sharp portions are effectively removed.

In addition, when the lower liner 10 moves forward, the lower liner 10 and the upper liner 20 move in opposite directions, so that foreign matter peeling of the crushed material and the removal of sharp portions can be made more effectively. That is, the lower liner 10 may grind the crushed material while moving backward (the direction opposite to the rotation direction of the upper liner 20), and transfer the crushed material to the outlet side while moving forward (the same direction as the rotation direction of the upper liner 20). . Through this, the system for producing recycled aggregate from construction waste according to the present invention can produce excellent circular recycled aggregate even with one grinder.

Since the crushed material is pulverized continuously while moving toward the product transfer conveyor 1 along the lower liner 10 and the upper liner 20, the recycled aggregate A falling on the product transfer conveyor 1 is foreign matter such as mortar on the surface. It is a spherical shape with no teeth and no sharp parts.

On the other hand, through the foreign matter discharge hole 11 of the lower liner 10, foreign matters, fine powder, etc., which are ground by the lower liner 10 and the upper liner 20, are discharged to the foreign matter conveying conveyor 2. At this time, since the lower liner 10 moves back and forth, the foreign matter discharge hole 11 is not blocked and the foreign matter W can be discharged. In addition, when foreign substances such as ground foreign substances and fine powder are collected in the oblique groove 16 formed in the lower liner 10, the lower liner 10 may be effectively discharged into the foreign substance discharge hole when the lower liner 10 moves back and forth.

10: lower liner, 11: foreign matter discharge hole
12: frame, 13: blocking jaw
14: roller, 15: guide rail, 16: oblique groove
20: upper liner, 21: belt
22: pressure roller, 30: drive motor
31: crankshaft
100: crusher, 200: sorting screen, 300: crusher

Claims (9)

A crusher for crushing waste concrete lumps; And
It is connected to the crusher and includes a crusher for grinding the crushed material supplied from the crusher,
The grinder is disposed to be inclined downward toward the ground and is installed to be retractable and has a porous lower liner having an uneven upper surface;
A forward and backward driving means for forcibly moving the lower liner back and forth;
An upper liner spaced apart from each other with a predetermined gap on the lower liner and having an uneven surface;
It includes a pulverization unit for pulverizing the raw aggregate at the upper end of the upper liner,
Foreign matters are peeled off the surface of the recycled aggregate that rubs between the lower liner and the upper liner by the linear reciprocating movement force of the lower liner and the caterpillar rotational force of the upper liner, and the recycled aggregate is ground into a spherical shape,
The crushing portion includes a pair of support portions and a cover portion on both sides of the upper liner, and includes a separation membrane for adjusting the amount of movement of the pulverized raw aggregate at an end portion of the upper liner of the cover portion,
The lower liner is a system for producing recycled aggregate from construction waste, characterized in that an intaglio groove is formed on the upper surface of the uneven plate, and is formed deeper from the uneven start portion to the foreign material discharge hole. The method of claim 1,
The crusher is a system for producing recycled aggregate from construction waste, characterized in that at least one of a jaw crusher, a cone crusher, a roll crusher, and an impact crusher is used. The method of claim 1,
A system for producing recycled aggregate from construction waste, further comprising a sorting screen between the crushers and the crushers for sorting crushed products with a particle size less than a preset particle size from the crushed products supplied from the crushers. The method of claim 1,
The system for producing recycled aggregate from construction waste, characterized in that a plurality of the lower liner or the upper liner are divided and formed. The method of claim 4,
Produces recycled aggregate from construction waste, characterized in that it includes a blocking jaw formed at both ends of the lower liner in the width direction to prevent the recycled aggregate ground from the upper portion of the lower liner from escaping to the outside. System. The method of claim 5,
The upper liner is a system for producing recycled aggregate from construction waste, characterized in that it is configured to be fixed to the surface of the belt rotating in a caterpillar track. The method of claim 6,
The lower liner is a system for producing recycled aggregate from construction waste, characterized in that the lower liner is fixed to the upper part of the frame erected at a certain height from the ground and moves back and forth with the frame. The method of claim 7,
A system for producing recycled aggregate from construction waste, characterized in that it comprises a guide rail that is spaced apart from the bottom of the frame at a predetermined interval, and a roller fixed to the bottom of the frame and moving along the guide rail. The method of claim 8,
The forward and backward driving means comprises a drive motor, a crankshaft connected to the drive motor and the frame and converting the rotational force of the drive motor into a linear reciprocating motion. A system for producing recycled aggregate from construction waste.

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