KR102309810B1 - Recycled aggregate manufacturing system for concrete and method of manufacturing recycled aggregate for concrete using the same - Google Patents

Abstract

The present invention discloses a system for manufacturing recycled aggregate for concrete and a method for manufacturing recycled aggregate for concrete using the same, wherein the system for manufacturing recycled aggregate for concrete which is developed to obtain high-quality concrete recycled aggregate of 25 mm or less by crushing and sorting, when recycled aggregate of 40 mm or less produced in the existing intermediate treatment process for construction waste is supplied, the recycled aggregate while repeatedly circulating the same in an impact crusher and a sorting device.

Description

Recycled aggregate manufacturing system for concrete and method of manufacturing recycled aggregate for concrete using the same

The present invention relates to a recycled aggregate manufacturing system for concrete, and more specifically, by repeatedly crushing and sorting low-quality recycled aggregate of 40 mm or less produced in the existing intermediate treatment process of construction waste while circulating an impact crusher and a sorting device. It relates to a recycled aggregate manufacturing system for concrete developed to obtain high-quality recycled aggregate for concrete of 25 mm or less suitable for KS F 2527 (concrete aggregate) standards, and a method for manufacturing recycled aggregate for concrete using the same.

In general, in terms of eco-friendliness and resource recycling, construction wastes generated during construction and dismantling of building structures are not landfilled but are collected in a predetermined place and then reproduced as high-quality construction materials through an intermediate treatment process. In particular, recycled aggregate for high-quality concrete can replace a certain amount of depleted stone aggregate due to environmental problems and its utilization is increasing significantly.

In the construction waste intermediate treatment process that produces recycled aggregate, construction waste such as waste concrete is first crushed in a jaw crusher, then secondary or tertiary crushed in a concrete crusher or impact crusher, and then circulated in various sizes through a sorting device. obtain aggregate.

However, recycled aggregate produced in this existing intermediate treatment process for construction waste is not suitable for KS F 2527 (crushed aggregate for concrete) standards because a significant amount of cement mortar and cement paste are attached to it. is aggregate.

In other words, recycled aggregate produced in the existing intermediate treatment process for construction waste contains oversized recycled aggregate, which is larger than that of recycled aggregate for concrete of 25 mm or less, as well as a significant amount of cement mortar and cement paste attached to the surface of the aggregate. There is a problem that it is not suitable for producing recycled aggregate for concrete of 25 mm or less according to KS F 2527 (crushed aggregate for concrete) standards because it contains low-quality recycled aggregate with high water absorption and low specific gravity.

1) Republic of Korea Patent No. 10-2185882 (Registration Date: November 26, 2020), Title of Invention: "Recycled Aggregate Production System" 2) Republic of Korea Patent No. 10-2196593 (registration date: December 23, 2020), title of invention: "System for producing recycled aggregate from construction waste" 3) Republic of Korea Patent Registration No. 10-2146498 (Registration Date: August 13, 2020), Title of Invention: "Recycled Aggregate Production System" 4) Republic of Korea Patent No. 10-2166923 (Registration Date: October 12, 2020), Title of Invention: "Recycling aggregate production apparatus and production method using waste road pavement"

The present invention has been proposed to improve the above problems, and its purpose is to repeat crushing and sorting of low-quality recycled aggregate of 40 mm or less produced in the existing intermediate treatment process of construction waste while circulating the impact crusher and the sorting device to cement It is to provide a recycled aggregate manufacturing system for concrete developed to effectively remove mortar and cement paste to obtain high-quality recycled aggregate for concrete of 25 mm or less.

Another object of the present invention is to process the recycled aggregate produced in the existing intermediate treatment process of construction waste by using the recycled aggregate manufacturing system for high-quality concrete according to the type, strength, and condition of the waste concrete, processing once, processing twice, 3 It is to provide a method for manufacturing recycled aggregate for concrete that produces high-quality recycled aggregate for concrete of continuous and stable quality by selecting and processing ash processing and further processing.

The above-mentioned object, the hopper into which the recycled aggregate of 40mm or less; Impact crusher installed on one side based on the hopper, crushing it when recycled aggregate of 40 mm or less is input and discharging the recycled aggregate for concrete of 25 mm or less; a first conveyor for guiding the recycled aggregate of 40 mm or less supplied to the hopper to be introduced into the impact crusher; a sorting device installed on the other side with respect to the hopper and sorting out recycled aggregates of 10 mm or less and recycled aggregates for concrete of 25 mm or less among the recycled aggregates crushed in the impact crusher; a second conveyor for guiding the recycled aggregate that is crushed and discharged from the impact crusher; a third conveyor for guiding the recycled aggregate guided by the second conveyor to the sorting device; a fourth conveyor for guiding and discharging the recycled aggregate of 10 mm or less selected by the sorting device; a fifth conveyor for guiding and discharging the recycled aggregate for concrete of 25 mm or less selected by the sorting device; and a recovery duct for guiding the recycled aggregate that is not sorted in the sorting device to the first conveyor to transfer it back to the impact crusher and re-crush it, and the recycled aggregate of 40 mm or less put into the hopper is impacted through the first conveyor. Guide to the crusher, crush the recycled aggregate of 40mm or less in the impact crusher and guide it to the sorting device through the second and third conveyors, and the sorting device sorts the recycled aggregate of 10mm or less and the recycled aggregate for concrete of 25mm or less and discharged to the 4th and 5th conveyors, respectively, and the recycled aggregate that is not sorted is guided through the recovery duct to the impact crusher again, re-shredded, and then guided again to the sorting device. It is configured to produce recycled aggregate for concrete, and the impact crusher is rotatably installed in a crushing chamber formed inside the body, and a plurality of blower bars are installed to protrude at equal intervals to the rotor rotating at high speed, and crushing On one side of the chamber, the first striking plate, the second striking plate, and the third striking plate are sequentially installed from the inlet to the outlet, and are installed to move forward and backward, respectively. The first striking plate, the second striking plate, and the third striking plate are configured to crush the recycled aggregate by applying an impact to the impact plate, and the first striking plate, the second striking plate, and the third striking plate Each of the plates includes a striking plate body installed so as to be movable back and forth in the crushing chamber, an upper airfron liner fixedly installed on the upper portion with reference to the middle from the front of the striking plate body, and the striking plate body It consists of a lower air apron liner fixedly installed in the lower part based on the middle from the front surface of the upper air apron, and the first striking plate has an angle deformable bracket interposed between the striking plate body and the upper air apron liner. It is achieved by a system for producing recycled aggregate for concrete, characterized in that the runliner is bent to a position close to the rotation radius of the rotor and is configured to be installed.

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The recycled aggregate manufacturing system for concrete according to the present invention is a system that repeats the process of crushing and sorting recycled aggregate by placing the supply hopper in the middle between the impact crusher and the sorting device. It has the effect of obtaining recycled aggregate for concrete of 25mm or less than 20mm suitable for KS F 2527 (concrete aggregate) standards by easily installing it separately without remodeling the low-quality recycled aggregate production facility installed in the intermediate processing company.

In addition, using the recycled aggregate manufacturing system for concrete according to the present invention, the recycled aggregate produced in the process of intermediate treatment of waste concrete of different types and properties is processed once, processed twice, and processed three times in consideration of the type and properties. By selectively performing processing and further processing, there is an effect that it is possible to produce high-quality recycled aggregate for concrete of stable quality corresponding to each type of waste concrete.

1 is a block diagram schematically showing a system for manufacturing recycled aggregate for concrete according to the present invention;
2 is a side cross-sectional view showing an impact crusher applied to the present invention;
3 is a view showing various embodiments of the angle deformation bracket used in the impact crusher applied to the present invention;
Figure 4 is a side cross-sectional view showing another embodiment of the impact crusher applied to the present invention,
5 is a side cross-sectional view showing a sorting device applied to the present invention;
6 is a plan view of a sorting device applied to the present invention;
7 is a separated side cross-sectional view of a sorting device applied to the present invention;
8 is a plan view showing another embodiment of a sorting device applied to the present invention;
9 is a cross-sectional view additionally shown to explain FIG. 8;

The present invention will be described in detail with reference to the accompanying drawings as follows.

Referring to Figure 1, the recycled aggregate manufacturing system for concrete according to the present invention is installed separately from the recycled aggregate production line installed in the existing construction waste intermediate processing company, a hopper (H), an impact crusher (IC), a sorting device (S) and consists of several conveyors.

First, the hopper (H) is input from recycled aggregates of 40 mm or less produced by crushing in the existing intermediate treatment process for construction waste. A sorting device (S) is installed.

Next, although the impact crusher (IC) will be described in more detail in the following description, when the recycled aggregate of 40 mm or less is input, it is crushed to discharge the recycled aggregate for concrete of 25 mm or less.

And the hopper (H) and the impact crusher (IC) are connected through the first conveyor (C1), and the circulating aggregate of 40 mm or less supplied to the hopper (H) passes through the first conveyor (C1) to the impact crusher (IC). ) is configured to guide input.

Next, the sorting device (S) will be described in more detail in the following description, but among the recycled aggregate crushed in the impact crusher (IC), the recycled aggregate of 10 mm or less and the recycled aggregate for concrete of 25 mm or less are each sorted. .

And the second conveyor (C2) is installed in the impact crusher (IC), the recycled aggregate crushed and discharged in the impact crusher (IC) is guided through the second conveyor (C2).

And the second conveyor (C2) is installed to be connected to the third conveyor (C3), the recycled aggregate guided to the second conveyor (C2) is configured to be guided to the sorting device (S) through the third conveyor (C3) . At this time, although the third conveyor (C3) is described to be directly connected to the sorting device (S), a transfer feeder (not shown) is installed between the third conveyor (C3) and the sorting device (S) to guide the recycled aggregate It may be configurable.

In addition, the sorting device (S) is provided with a fourth conveyor (C4) for guiding and discharging the sorted recycled aggregate of 10 mm or less, and a fifth conveyor (C5) for guiding and discharging the sorted recycled aggregate for concrete of 25 mm or less.

And a recovery duct (D) connected to the first conveyor (C1) is installed in the sorting device (S) inclined, so that the recycled aggregate that is not sorted in the sorting device (S) passes through the recovery duct (D) to the first conveyor (C1) ) is guided as it flows down, and is transported back to the impact crusher (IC) and configured to be re-crushed.

The recycled aggregate manufacturing system for concrete according to the present invention configured as described above guides the recycled aggregate of 40 mm or less input into the hopper (H) to the impact crusher (IC) through the first conveyor (C1), and the impact crusher (IC) Crushes recycled aggregates of 40 mm or less in the sieve and guides them to the sorting device (S) through the second conveyor (C2) and the third conveyor (C3). The recycled aggregate is selected and discharged to the fourth conveyor (C4) and the fifth conveyor (C5), respectively.

Of course, recycled aggregate that is not sorted is guided to the impact crusher (IC) again through the recovery duct (D), re-crushed, and then guided again to the sorting device (S). to produce aggregate.

The recycled aggregate manufacturing system for concrete constructed and operated in this way is processed once or twice depending on the type of waste concrete, which is the raw material, among recycled aggregates of 40 mm or less manufactured in the recycled aggregate production line installed at the existing construction waste intermediate treatment company. , 3 times processing, or more processing is selectively performed to produce high-quality recycled aggregate for concrete of stable quality.

That is, recycled aggregates of 40 mm or less produced by processing waste concrete using steel grains, such as old bridges and old buildings, are processed once in the recycled aggregate manufacturing system for concrete according to the present invention to improve the quality, and general use of crushed stone Recycled aggregate of 40mm or less produced by processing waste concrete of strength (40Mpa or less) is processed twice in the recycled aggregate manufacturing system for concrete according to the present invention to improve quality, and high-strength (40Mpa or more) waste using crushed stone The recycled aggregate of 40 mm or less produced by processing concrete is processed three times in the recycled aggregate manufacturing system for concrete according to the present invention and the quality is improved by selecting more processing depending on the condition. Then, it is possible to produce high-quality recycled aggregate for concrete of reasonable and stable quality considering various types of waste concrete.

On the other hand, referring to Figures 2 and 3, the impact crusher (IC) applied to the present invention is basically provided with a crushing chamber 12 inside the main body 10, and 40 mm as a crushing chamber 12 in an upper part. It has a main body 10 having a structure in which an inlet 14 for supplying the following recycled aggregate is formed, and an outlet 16 for discharging the crushed recycled aggregate of 40 mm or less is formed on the lower side. And inside the crushing chamber 12 of the main body 10, the rotor 20 is installed rotatably at high speed about the rotation axis, and a plurality of blower bars 22 are installed on the outer circumferential surface of the rotor 20 at predetermined intervals. As the blower bar 22 rotates together with the rotor 20, it applies an impact to the recycled aggregate of 40 mm or less to crush it appropriately to the particle size of the recycled aggregate for concrete, and also crushes and separates the cement mortar attached to the recycled aggregate. do. And on one side of the crushing chamber 12, the first striking plate 30, the second striking plate 40, and the third striking plate 50 are sequentially installed from the inlet 14 toward the outlet 16, The first striking plate 30 , the second striking plate 40 , and the third striking plate 50 are installed to strike the circulating aggregate of 40 mm or less while the opposite side rotates back and forth about the central axis, respectively.

With this configuration, the impact crusher (IC) puts 40 mm or less circulating aggregate into the crushing chamber 12, the rotor 20 rotates at high speed and the blower bar 22 applies an impact to the 40 mm or less circulating aggregate. , the first striking plate 30, the second striking plate 40, and the third striking plate 50 have a structure in which the impacted circular aggregate of 40 mm or less is continuously struck and crushed.

In addition to this basic configuration, the impact crusher (IC) applied to the present invention has an improved structure of the first striking plate 30 and the structure of the input hopper 200 .

First, when explaining the structure of the first striking plate 30, the second striking plate 40, and the third striking plate 50, the striking plate body which is installed so as to be reciprocally movable back and forth in the crushing chamber 12, respectively. (32) (42) (52), and the upper air front liner (34, 44, 54) fixedly installed on the upper part from the front to the middle of the striking plate body (32, 42, 52) and , is composed of a lower air front liner (36, 46, 56) that is fixedly installed in the lower part from the front to the middle of the striking plate body (32, 42, 52). Of course, the upper air apron liners 34, 44, 54 and the lower air apron liners 36, 46 and 56 on the striking plate body 32, 42 and 52 are mounted in a conventional bolted manner. installed fixedly.

And the first striking plate 30 is installed such that the angle deformation bracket 100 is additionally interposed between the striking plate body 32 and the upper air apron liner 34, the upper air apron liner 34 is the rotor. It is configured to be bent to a position close to the

Here, the angle deformation bracket 100 is configured to have a triangular shape, depending on the angle of the surface on which the upper air apron liner is installed based on the surface fixedly installed on the striking plate body 32 of the upper apron liner 34. The location is configured to be determined. That is, when the angle is large as shown in (a) of FIG. 3, the upper air front liner 34 is installed closer to the rotor 20, and the angle is small as shown in (b) of FIG. If the upper air apron liner 34 is installed less close to the rotor (20). And the installation angle of the upper air apron liner is determined according to the shape of the surface on which the upper air apron liner is installed. That is, as shown in (a) and (b) of Fig. 3, if the surface on which the upper air apron liner is installed is flat, the upper air apron liner 34 is installed flat, and as shown in Fig. 3 (c). As shown, when the middle part of the surface on which the upper air apron liner is installed is depressed, the upper air apron liner 34 is installed in a state in which the middle is depressed.

Therefore, it is possible to adjust the installation position and the installation angle of the upper air apron liner 34 by changing the angle deformation bracket 100 .

In addition, the angle deformation bracket 100 is configured to be fixed by a conventional bolt method penetrating the upper air apron liner 34 and the striking plate body 32 .

On the other hand, in the impact crusher (IC) applied to the present invention, the angle deformation bracket 100 is additionally installed so that the upper air front liner 34 is installed in a position close to the rotor 20, but as shown in FIG. As shown, the protrusion 110 may be formed directly on the striking plate body 32 instead of the angle deformation bracket 100 . That is, the striking plate body 32 of the first striking plate 30 is formed with a protrusion 110 through which a portion on which the upper air apron liner 34 is fixedly installed is formed, so that the upper air apron liner 34 is a protrusion. It may be configured to be installed by being bent to a position close to the rotor 20 when it is fixedly installed on the 110 .

Next, referring to FIGS. 2 and 3 , an input hopper 200 is installed in the inlet 14 of the main body 10, and the input hopper 200 has a narrower outlet formed at the bottom than the inlet formed at the upper portion. , is installed so that the outlet of the input hopper 200 is located below the inlet 14 of the main body 10 when it is installed in the inlet 14 of the main body 10 . Then, the recycled aggregate of 40 mm or less input through the input hopper 200 is introduced along the lower portion of the inlet 14 and is guided in the direction of the rotor 20 along the inclined surface formed in the lower portion of the inlet 14 .

And on both sides of the outlet of the input hopper 200, the shielding installation plate 210 is integrally formed to block the remaining parts except for the part communicating with the outlet of the input hopper 200 from the inlet 14 of the main body 10 to seal composed to make Then, the recycled aggregate of 40 mm or less is introduced into the crushing chamber 12 only through the input hopper 200 .

In addition, the blocking plate 300 is installed on the shielding plate 210 located above the outlet of the input hopper 200, and the blocking plate 300 is located close to the end of the upper air front liner 34. It is configured to block the movement of circulating aggregates of 40 mm or less, which is extended to and input through the outlet of the input hopper 200 , into a space irrelevant to the first striking plate 30 .

Now, the operating relationship of the impact crusher (IC) applied to the present invention configured as described above will be described.

The impact crusher (IC) applied to the present invention is guided to the crushing chamber 12 along the lower portion of the inlet 14 of the main body 10 when the recycled aggregate of 40 mm or less is put into the input hopper 200, and the rotor 20 ) is rotated, the blower bar 22 applies an impact to the circulating aggregate of 40 mm or less, 50) is struck and crushed.

At this time, in the present invention, since the upper air apron liner 34 of the first striking plate 30 is installed in a position close to the rotor 20 through the angle deformation bracket 100, when the circulating aggregate of 40 mm or less is input You can hit directly. That is, in the conventional impact crusher, when the recycled aggregate of 40 mm or less is input, the distance between the upper air front liner 34 and the rotor 20 is too far, and the upper air front liner 34 hits the recycled aggregate of 40 mm or less. Although it could not be done, the present invention is capable of striking recycled aggregates of 40 mm or less because the upper air apron liner 34 is in a position close to the rotation radius of the rotor 20 .

Of course, in the present invention, if the angle deformation bracket 100 is changed according to the size of the recycled aggregate for concrete, the position and angle of the upper air apron liner 34 of the first strike plate 30 are adjusted, so that the best crushing function is achieved. be able to get

In addition, in the present invention, the blocking plate 300 is installed on a part of the shielding plate 210 of the input hopper 200 to block the circulating aggregate of 40 mm or less from moving into a space irrelevant to the first hitting plate 30 . Therefore, it is possible to obtain a certain crushing effect without loss.

Meanwhile, referring to FIGS. 5 to 7 , the sorting device S applied to the present invention is configured to include a sorting net body 1000 , a net cover 1100 , and a blocking cover 1200 .

First, the screening mesh 1000 has a mesh structure of the same size as a whole so that recycled aggregate for concrete of 25 mm or less suitable for KS F 2527 (concrete aggregate) passes and is selected, and has a vibration function through a normal vibration means. do. Here, since the vibration means may apply a conventional technique, a detailed description thereof will be omitted.

Next, the mesh cover 1100 is installed to selectively cover a portion of the upper surface of the inlet side of the screening mesh 1000, and is configured to have a mesh structure through which circulating aggregates of 10 mm or less pass. This mesh cover 1100 is fixed to the screening mesh 1000 through the clip 1300, wherein the clip 1300 is integrally formed protruding from the bottom surface of the mesh cover 1100 and fitted to the screening mesh 1000. It is preferable to have a structure, but it may be fixedly installed in a binding manner using a separate clip 1300 .

And it is preferable that the mesh cover 1100 is placed so as to cover a portion of the upper surface of the inlet side of the screening mesh 1000 and fixed to the screening mesh 1000 through the clip 1300 only at the top. Then, when the sorting mesh 1000 vibrates, the mesh cover 1100 increases the sorting force in a way that the bottom of the mesh cover 1100 is lifted up and down based on the clip 1300 at the top by the vibration force, and in a way that punctures the recycled aggregate input. It is possible to more effectively select recycled aggregates of 10 mm or less. Of course, in this embodiment, only the upper end of the mesh cover 1100 is fixed, but in some cases, it may be installed to be fixed as a whole.

Next, the blocking cover 1200 is installed to cover a portion of the upper surface of the outlet side of the screening net body 1000, and has a closed structure through which oversized recycled aggregate and low-quality recycled aggregate can pass quickly without a screening process. This blocking cover 1200 is fixed to the screening net body 1000 through the clip 1300, at this time, the clip 1300 is integrally formed protruding from the bottom surface of the blocking cover 1200 to be fitted and fixed to the screening mesh 1000 It is preferable to have a structure, but it may be fixedly installed in a binding manner using a separate clip 1300 . And it is preferable that the blocking cover 1200 is installed to be fixed as a whole to the sorting net body 1000 .

In the sorting device (S) applied to the present invention by this configuration, when the mesh cover 1100 and the blocking cover 1200 are installed in the screening mesh 1000, the inlet side of the screening mesh 1000 is the mesh cover 1100. ), an initial sorting section (R1) is formed in which recycled aggregates of 10 mm or less pass and are sorted, and the middle part of the sorting mesh (1000) is selected by passing recycled aggregates of 25 mm or less suitable for KS F 2527. A sorting section (R2) is formed, and the exit side of the sorting mesh 1000 is quickly recovered by preventing the sorting operation from being made through the blocking cover 1200 and preventing oversized, low-quality recycled aggregate from passing through the sorting mesh. A return section R3 that can be transferred to the crushing process is formed.

That is, the network cover 1100 and the blocking cover 1200 are continuously installed as many as necessary on the upper surface of the screening net body 1000, and the initial screening section ( The distance between R1), the main selection section (R2), and the return section (R3) is determined.

And the mesh cover 1100 and the blocking cover 1200 can be manufactured and installed in one length to fit the width direction of the screening mesh 1000 as shown in FIG. 6, but several pieces as shown in FIGS. 8 and 9 It may be possible to install several pieces in a modular way by making them separately.

That is, as shown in FIG. 9, the sorting mesh 1000 has a round cross-section in an arc shape so that the recycled aggregate can be spread when viewed from the front. (1000) It is possible to divide into several pieces and install them in a modular way because it is better to install them by dividing them into several pieces rather than manufacturing them according to the arc shape of (1000).

Now, the operation relationship of the sorting device S applied to the present invention configured as described above will be described.

In the sorting device (S) applied to the present invention, when recycled aggregate of 40 mm or less that has undergone the crushing process is put toward the entrance of the screening mesh 1000, the screening mesh 1000 vibrates and the cycled aggregate moves toward the outlet. At this time, the recycled aggregate of 10 mm or less is selected while passing through the mesh cover 1100 and the screening mesh 1000 in the initial screening section (R1), and only the recycled aggregate of size 10 mm or more is guided to the main screening section (R2). And, when recycled aggregate with a size of 10mm or more passes through the main sorting section (R2), the high-quality recycled aggregate for concrete with a relatively small size and heavy specific gravity is located at the lower part (surface of the sorting mesh) due to vibration, and the cement mortar is attached to the size Low-quality recycled aggregate, which is large and light in specific gravity, is located at the top (away from the surface of the sorting screen), so only the recycled aggregate for high-quality concrete is sorted first while passing through the sorting screen, and the low-quality recycled aggregate is returned immediately before passing through the sorting screen (R3) It is recovered upon entry into

That is, among the high-quality recycled aggregate and the low-quality recycled aggregate divided up and down by vibration, the high-quality recycled aggregate passes through the screening mesh 1000 and is sorted, but the low-quality recycled aggregate goes to the return section (R3) before passing through the screening mesh 1000. Guided and returned for re-shredding. Of course, the high-quality recycled aggregate passing through the screening mesh 1000 passes through only the size of 25 mm or less, and the recycled aggregate of 25 mm or more size does not pass through the screening mesh 1000 and is guided to the return section R3 and recovered. And the recovered oversized recycled aggregate of 25mm or more and low-quality recycled aggregate are again crushed through a crushing operation and then screened through the sorting mesh 1000 according to the present invention.

As described above, the present invention has been shown and described in relation to specific embodiments, but it is known in the art that various modifications and changes are possible without departing from the spirit and scope of the invention as defined by the claims. When you grow up, anyone will find out easily.

10: body 12: crushing chamber
14: inlet 16: outlet
20: rotor 30: first striking plate
40: second hitting plate 50: third hitting plate
32, 42, 52: striking plate body 34, 44, 54: upper air front liner
36, 46, 56: lower air front liner 100: angle deformation bracket
110: protrusion 200: hopper
210: shielding plate 300: blocking plate
1000: screening mesh 1100: mesh cover
1200: blocking cover 1300: clip
C1: 1st conveyor C2: 2nd conveyor
C3: 3rd conveyor C4: 4th conveyor
C5: 5th conveyor D: return duct
H: Hopper IC: Impact crusher
R1: Initial screening section R2: Main screening section
R3: Return section S: Sorting device

Claims (6)

a hopper into which recycled aggregates of 40 mm or less are put; Impact crusher installed on one side based on the hopper, crushing it when recycled aggregate of 40 mm or less is input and discharging the recycled aggregate for concrete of 25 mm or less; a first conveyor for guiding the recycled aggregate of 40 mm or less supplied to the hopper to be introduced into the impact crusher; a sorting device installed on the other side based on the hopper and sorting out recycled aggregates of 10 mm or less and recycled aggregates for concrete of 25 mm or less among the recycled aggregates crushed in the impact crusher; a second conveyor for guiding the recycled aggregate that is crushed and discharged from the impact crusher; a third conveyor for guiding the recycled aggregate guided by the second conveyor to the sorting device; a fourth conveyor for guiding and discharging the recycled aggregate of 10 mm or less selected by the sorting device; a fifth conveyor for guiding and discharging the recycled aggregate for concrete of 25 mm or less selected by the sorting device; and a recovery duct guiding to the first conveyor in order to transport the recycled aggregate that is not sorted in the sorting device back to the impact crusher and re-crush it.
The recycled aggregate of 40 mm or less input into the hopper is guided to the impact crusher through the first conveyor, and the recycled aggregate of 40 mm or less is crushed in the impact crusher and guided to the sorting device through the second and third conveyors, and a sorting device Circulated aggregates of 10 mm or less and recycled aggregates of 25 mm or less are selected and discharged to the 4th and 5th conveyors, respectively.
Recycled aggregate that is not sorted is guided through the recovery duct to the impact crusher again, re-crushed, and then guided again to the sorting device to produce recycled aggregate for concrete of 25 mm or less through circulation.
The impact crusher is,
The rotor is rotatably installed in the crushing chamber formed inside the main body, and a plurality of blower bars are installed to protrude at equal intervals to the rotor rotating at high speed, and one side of the crushing chamber has a first striking plate and a second striking plate from the inlet to the outlet. The plate and the third striking plate are installed sequentially, but are installed to move forward and backward, respectively. When the circulating aggregate is put into the crushing chamber, the rotor rotates and the blower bar applies an impact to the circulating aggregate, It is composed of a structure in which the second and third striking plates are continuously struck and crushed,
The first striking plate, the second striking plate, and the third striking plate are respectively a striking plate body installed so as to move forward and backward reciprocally within the crushing chamber, and an upper portion from the front to the middle of the striking plate body. It consists of an upper air apron liner fixedly installed, and a lower air apron liner fixedly installed on the lower part from the front to the middle of the striking plate body,
For concrete, characterized in that the first striking plate is installed with an angle deformation bracket interposed between the striking plate body and the upper air apron liner so that the upper air apron liner is bent to a position close to the rotation radius of the rotor. Recycled aggregate manufacturing system.
delete According to claim 1,
The angle deformation bracket is configured to have a triangular shape, and the position of the upper apron liner is determined according to the angle of the surface on which the upper air apron liner is installed based on the surface fixedly installed on the striking plate body,
An input hopper is installed at the inlet of the main body,
The input hopper has an outlet formed in the lower part narrower than the inlet formed in the upper part, and is installed so that the outlet of the input hopper is located below the inlet of the main body when installed in the inlet of the main body. It is formed to extend from the inlet of the main body and is configured to block and seal the remaining parts except for the part communicating with the outlet of the input hopper,
A blocking plate is installed on the shielding plate located above the outlet of the input hopper,
The blocking plate is extended to a position close to the end of the upper air front liner and is configured to block the movement of circulating aggregate of 40 mm or less, which is input through the outlet of the input hopper, into a space irrelevant to the first striking plate, characterized in that Recycled aggregate manufacturing system for concrete.
According to claim 1,
The sorting device is
A sorting net that has a net structure of the same size as a whole so that recycled aggregates of 25 mm or less pass through, and has a vibrating function through a vibrating means;
A mesh cover covering a portion of the upper surface of the inlet side of the screening mesh body and having a mesh structure through which a circulating aggregate of 10 mm or less passes;
It covers a part of the upper surface of the outlet side of the screening mesh and consists of a blocking cover having a closed structure through which circulating aggregate cannot pass,
The inlet side of the screening mesh is formed with an initial screening section in which recycled aggregates of 10 mm or less pass through the mesh cover and are sorted, and the middle part of the screening mesh is a main screening section in which recycled aggregates of 25 mm or less pass through and are sorted. This is formed, and the exit side of the sorting mesh body does not pass through the main sorting section through the blocking cover, so a return section is formed in which the oversize, low-quality recycled aggregates in which the sorting operation is not performed are recovered,
When sorting by inputting recycled aggregate of 40 mm or less toward the entrance of the sorting mesh, recycled aggregate of 10 mm or less is sorted in the initial sorting section, and only recycled aggregate of size 10 mm or more is guided to the main sorting section, and vibration when passing through the main sorting section As a result, high-quality recycled aggregate with relatively heavy specific gravity is located at the bottom and low-quality recycled aggregate with light specific gravity is located at the top. Recycled aggregate manufacturing system for concrete, characterized in that it is configured to be able to separate high-quality and low-quality products by allowing them to be recovered without being sorted.
5. The method of claim 4,
The mesh cover and the blocking cover are placed so as to cover a portion of the upper surface of the screening mesh body and have a structure fixed to the screening mesh body through a clip,
It is configured to determine the distance of the initial selection section, the main selection section, and the return section according to the number of the network cover and the blocking cover,
The mesh cover is placed so as to cover a part of the upper surface of the inlet side of the screening mesh, and only the upper part is fixed to the screening mesh through a clip. A recycled aggregate manufacturing system for concrete, characterized in that it is configured to sort recycled aggregates of 10 mm or less in the initial screening section by breaking the recycled aggregate input while lifting and descending.
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