KR101787092B1 - Ready-mixed concrete manufacturing method using recycled coarse aggregate and fine aggregate - Google Patents

Abstract

The present invention can improve the recycling of aggregate as a finite resource by manufacturing recycled coarse aggregate using waste concrete and mixing it with common fine aggregate to manufacture ready-mixed concrete, and it is possible to reduce the amount of recycled coarse aggregate And a method for manufacturing a ready-mixed concrete using the fine aggregate.
A feature of the present invention resides in a waste concrete sorting step (S100) for sorting waste concrete that can be recycled among the construction wastes generated as a building is demolished, a waste concrete slicing step (S100) for cutting waste concrete using a cutting device A waste concrete crushing step S300 using the crusher 100 for crushing and cutting the waste concrete that has been cut and a steel sorting member 600 for sorting the steel contained in the crushed waste concrete by a magnetic force (S500) using a foreign matter sorting member (500) to sort floating matters suspended in suspended state and precipitated fine particles in a state where the crushed waste concrete is settled in water, and a foreign matter selecting step A waste concrete crushing step (S600) for finishing the recycled aggregate using the cone crusher (200) for crushing the removed waste concrete; and a crushing step (S700) using a cleaning member (300) to remove separated fine particles, and a ready-mix concrete manufacturing step (S900) for making ready mixed concrete using natural fine aggregate and circulating coarse aggregate collected in nature do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a concrete using recycled coarse aggregate and fine aggregate,

The present invention can improve the recycling of aggregate as a finite resource by manufacturing recycled coarse aggregate using waste concrete and mixing it with common fine aggregate to manufacture ready-mixed concrete, and it is possible to reduce the amount of recycled coarse aggregate And a method for manufacturing a concrete using fine aggregate.

Generally, cement is widely used as structural materials for construction and civil engineering, and it is easy to purchase materials, has high compressive strength, is excellent in fire resistance, and has good durability.

However, since cement is not readily available for recycling such as steel or wood, a lot of waste is generated when a building or a bridge is demolished, and accordingly the processing cost is increasing.

According to a report by the Korea Institute of Geoscience and Mineral Resources, domestic aggregate resources are expected to be depleted in the next 20 years. Aggregate scarcity is very serious today as the agenda of securing aggregate resources through the development of the Han River estuary .

As the characteristics of aggregate resources are extracted from nature, there is an additional problem of natural environmental degradation. The key to solving these aggregate resource problems is to recycle existing waste concrete.

However, existing waste concrete has simply been crushed and used only for landfill, such as for roadside assistance layers or for gravel soils. In 1995, the government tried to solve the problem of aggregate supply and demand by establishing quality standards for recycled aggregate in 1995, thereby securing the quality of recycled aggregate and making it mandatory for manufacturing concrete.

Therefore, it is required to develop a device for manufacturing a concrete after recycled aggregate using waste concrete.

The background art of the present invention is disclosed in Patent Registration No. 10-0712077 (April 20, 2007) filed and filed with the Korean Intellectual Property Office.

A problem to be solved by the present invention is to make recycled coarse aggregate using waste concrete and mixing it with ordinary fine aggregate to manufacture ready-mixed concrete to increase recycling of aggregate as a finite resource and to reduce collection of aggregate as a natural resource And to provide a method for manufacturing a ready-mixed concrete using the coarse aggregate and the fine aggregate.

The method for manufacturing a concrete using recycled coarse aggregate and fine aggregate according to an embodiment of the present invention includes a waste concrete sorting step S100 for sorting waste concrete that can be recycled among construction waste generated as a building is demolished, A waste concrete shredding step (S200) of cutting the waste concrete using a cutting device to separate the waste concrete to be separated, a waste concrete shredding step (S300) using a jaw crusher (100) (S400) using a steel sorting member (600) for sorting the steel material contained in the waste concrete by a magnetic force, a foreign matter sorting member (S400) for sorting floating matters suspended in the water- 500), and a cone crusher (200) for crushing waste concrete from which foreign matter has been removed. A crushed fine aggregate washing step (S700) using the washing member (300) to remove fine particles separated from the recycled aggregate by washing the crushed recycled aggregate (S600), and a step (S700) of washing the fine fine aggregate and the coarse aggregate (S900) for manufacturing ready-mixed concrete using the concrete mixer.

The present invention can produce recycled coarse aggregate using waste concrete and mix it with common fine aggregate to manufacture ready-mixed concrete, thereby increasing recycling of aggregate as a finite resource and reducing collecting of aggregate as a natural resource, There is an advantage that environmental pollution can be prevented.

In addition, since the waste concrete is crushed by the jaw crusher and the iron material such as the reinforcing bar is selected by the iron material sorting member, the waste concrete of the proper size in which the iron material is separated can be completed.

In addition, waste concrete floating in water is removed by immersing the waste concrete in water, and the concrete such as soil is separated by soaking, so that the waste concrete in a clean state can be completed.

Also, the waste concrete can be crushed by the cone crusher to produce cyclic coarse aggregates of various sizes.

Also, the size of the space where the circulating coarse aggregate is crushed can be adjusted by the height adjusting unit provided in the cone crusher, so that the circulated coarse aggregate of various sizes can be manufactured.

Also, the circulated coarse aggregate can be washed, and the waste cement remaining in the circulated coarse aggregate can be separated.

In addition, since the circulating coarse aggregate is dried and moisture is removed from the circulated coarse aggregate, foreign matter such as dust can be prevented from being adsorbed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a method for manufacturing a concrete using recycled coarse aggregate and fine aggregate according to an embodiment of the present invention; FIG.
2 is an exploded perspective view showing a jaw crusher applied to the present invention.
3 (a), 3 (b) and 3 (c) are diagrams showing the operating state of the jaw crusher of the present invention.
4 is a view showing a state of use of the iron sheet sorting member according to the present invention.
5 is an exploded perspective view showing the iron sheet sorting member of the present invention.
6 is a view showing the use state of the foreign matter sorting member applied to the present invention.
7 is a view showing a state of use of a cone crusher according to the present invention.
8 is a perspective view showing the use state of the recycled aggregate cleaning member applied to the present invention.
FIG. 9 is a perspective view showing the use state of the recycled aggregate drying member applied to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the present invention includes a waste concrete classification step S100, a waste concrete cutting step S200, a waste concrete crushing step S300, a steel material sorting step S400, S500), pulverized concrete pulverization step (S600), circulating fine aggregate cleaning step (S700), circulating fine aggregate drying step (S800), and concrete preparation step (S900).

The waste concrete sorting step (S100) classifies waste concrete that can be recycled among the construction waste generated as the building is demolished. That is, various kinds of construction waste arising from the dismantling of buildings are poured out. After these construction wastes are collected at the collection site, waste concrete that can be recycled for construction is separately classified and stored.

In this way, waste concrete, which is worthless in use, is buried and can be recycled without being discarded, thus saving resources and minimizing soil contamination.

In the waste concrete cutting step (S200), the waste concrete is cut so that the reinforcing bars are separated. That is, waste concrete such as load-bearing walls, outer walls, pillars and beams can be cut by a cutting device such as a hammer device or a clamp device. At this time, not only the reinforcing bars can be separated in the process of cutting the waste concrete, but also the waste concrete to be cut has an appropriate size for shredding.

As shown in FIGS. 1 and 2, the waste concrete crushing step (S300) uses a jaw crusher (100) which crushes waste concrete to be crushed.

2 and 3, the JAW CRUSHER 100 includes a guide member 110 for guiding the inflow of waste concrete supplied from the outside, The other end of the waste concrete supported by the support member 120 is moved to the other side of the guide member 110. The support member 120 includes a support member 120 supporting one side of the waste concrete, A price member 130, and a flow member 140 that repetitively pushes and pulls and flows the price member 130.

The guiding member 110 includes a slope 111 formed to be inclined so as to move waste concrete supplied from the outside, a slip prevention member 112 provided to the slope 111 to prevent waste concrete from coming into contact with the waste concrete, And a hopper 113 provided at the end of the ramp 111 for guiding the waste concrete between the support member 120 and the price member 130.

The ramp 111 may be composed of an inclined plate formed to be inclined and an outer wall protruding upward from both sides of the inclined plate. Here, the swash plate may be composed of a perforated plate having pores having a diameter smaller than that of the waste concrete so that soil or small-sized foreign matter is removed.

The release preventing member 112 includes a base portion 114 fixed to the upper portion of the ramp 111 and a shock absorbing portion 115 for contacting the waste concrete moved in a state where one end is connected to the base portion 114, ).

The base portion 114 may be composed of a shaft connected to both sides of the ramp 111 by bolting at both ends thereof and the shock absorbing portion 115 may be composed of a rope connected to the base portion 114, . Here, the shock-absorbing parts 115 may be connected in parallel to the base part 114 in a state where the shock-absorbing parts 115 are spaced apart from each other.

Therefore, since the impact relaxation part 115 connected to the base part 114 is in contact with the upper part of the waste concrete moved along the slope road 111, the waste concrete is collided with the waste concrete and moves upward Can be prevented. That is, the bouncing force of the waste concrete is transmitted to the shock absorbing part 115 and attenuated. Thereby, the waste concrete can be stably moved without being released to the outside of the slope road 111. [

The waste concrete supplied by the forklain is slid in the ramp 111 and moved to the hopper 113 so that it can be dropped and supplied between the support member 120 and the price member 130 by the hopper 113 have.

The support member 120 may be formed of a plate material which is provided in a state of being raised or tilted while being in proximity to or close to one side of the lower portion of the hopper 113. The supporting member 120 may be formed as a concavo-convex curved surface on the surface where the waste concrete is supported, so that the waste concrete can be crushed while being supported by the price member 130.

The price member 130 may be formed of a plate material that is inclined while approaching the other side of the lower portion of the hopper 113. This price member 130 can be formed with irregularities such as irregularities on the surface where the waste concrete is priced, so that the waste concrete priced by the price member 130 can be shredded.

Here, the support member 120 and the price member 130 may be provided inside the hopper 113. That is, the support member 120 may be fixed to one side of the inside of the hopper 113 and the price member 130 may be provided to flow from the inside to the other side of the hopper 113. Accordingly, waste concrete flowing into the hopper 113 can be easily broken without being released to the outside of the hopper 113 in the process of being damaged by the support member 120 and the price member 130.

When the support member 120 and the price member 130 are provided below the hopper 113, outer walls are formed on both sides of the support member 120 and the price member 130 to prevent the waste concrete from escaping It is possible.

As described above, since the price member 130 is inclined, the waste concrete, which is crushed to a small size by the price member 130 after the large-sized waste concrete is inserted into the upper portion of the price member 130, As shown in FIG.

The flow member 140 includes a moving unit 141 which is once fixed to the price member 130 and reciprocates the price member 130 by an external pressure and a rotating member 141 that rotates the other end around the one end by a rotational force transmitted from the outside, The other end of the reciprocating moving part 141 and the other end of the rotating part 143 are rotated so that one end is rotated by the rotation of the rotating part 143 and the other end is reciprocated by the moving part 141 (Not shown).

The moving part 141 may be guided by a guide so that the reciprocating movement can be guided in the left and right directions. Can be connected to the motor shaft of the motor.

The moving part 141 can be guided in a straight line by the guide part 144.

Therefore, when the rotary part 143 is continuously rotated, the connecting part 143 reciprocates the moving part 141 continuously, so that the price member 130 can be reciprocated to charge the waste concrete. That is, since the price member 130 is repeatedly moved away from the support member 120 and then repeatedly operated, the waste concrete is continuously costed, so that the hardened waste concrete can be easily broken.

In addition, the flow member 140 may be comprised of a vibrator capable of oscillating the price member 130. Therefore, when the price member 130 is vibrated in contact with the waste concrete, the waste concrete can be crushed. At this time, the waste concrete is broken and the waste cement attached to the aggregate can be separated. That is, recycled aggregate that can be recycled in waste concrete can be generated.

Thus, the crushed waste concrete can be conveyed to the next process by the conveyor by the conveyor belt provided at the lower part of the jaw crusher 100.

As shown in FIGS. 1 and 4, in the steel sorting step S400, a steel sorting member 600 for sorting the steel material contained in the crushed waste concrete by a magnetic force is used. As shown in FIGS. 4 and 5, the iron sorting member 600 includes a plurality of pulleys 610 spaced apart at regular intervals, and a plurality of pulleys 610 disposed between the pulleys 610 to draw iron A belt 630 mounted on the pulleys 610 in a state surrounding the magnetic force part 620 and a belt 630 protruding from the belt 630 and being driven by the magnetic force of the magnetic force part 620 A transfer plate 640 for transferring the iron material to be attached to the belt 630 to the outside of the magnetic portion 620 to be released from the belt 630 and a transfer plate 640 for transferring the belt 630 in a state of being fixed to the magnetic portion 620 And a belt tension adjusting unit 650 for adjusting the tension of the belt 630 by supporting the belt 630.

Pulleys 610 are formed on both sides of the magnetic portion 620 and are positioned on both sides of the conveyor belt on which the concrete is conveyed.

In the magnetic force section 620, an electromagnet or a permanent magnet is embedded in the magnetic force case. This magnetic portion 620 is located close to the lower portion of the belt 630 inside the belt 630. That is, the magnetic force of the magnetic force part 620 can be transmitted to the steel material conveyed by the conveyor belt through the lower part of the belt 630.

The belt 630 may be rotated in a direction that is interposed in the pulleys 610 and crosses the rotational direction of the conveyor belt.

The conveying plates 640 may be arranged in a plurality of spaced apart intervals on the belt 630. Therefore, the iron material attached to the belt 630 by the magnetic force can be conveyed by the conveyance plate 640. That is, when the iron material conveyed by the conveyance plate 640 moves away from the magnetic force, it is separated from the belt 630 and falls to the outside of the conveyor.

The belt tension adjuster 650 includes an auxiliary pulley 651 for supporting the belt 630, a guide 652 formed in the magnetic force portion 620 for guiding the lifting and lowering of the auxiliary pulley 651, And a fixing portion 653 for fixing the auxiliary pulley 651 in an elevated or lowered state to the guide 652. [

The auxiliary pulley 651 is provided with bearings at the centers of both sides thereof and can be rotated around the bearing. A male fixing part 654 such as a screw shaft projects so as to engage with the fixing part 653 of the bearing. That is, the male type fixing portion 654 is maintained in a fixed state via the bearing, and the auxiliary pulley 651 can be rotated.

The guide 652 is raised on the upper side of the magnetic force part 620 and a vertical lift hole 655 for lifting and lowering the male fixing part 654 of the auxiliary pulley 651 is formed long in the vertical direction, A fixing hole 656 for fixing the male fixing part 654 is formed by a plate member which is formed so as to communicate with the upper part of the elevating hole 655 laterally.

The screw shaft as the male fixing portion 654 can be raised and lowered while the fixing hole 656 is protruded sideways from the upper end of the lift hole 655 and the end is bent downward When the screw shaft as the male fixing part 654 is positioned, the fixing state is maintained without being lowered. That is, when the male fixing portion 654 is positioned in the fixing hole 656, the auxiliary pulley 651 presses the belt 630 to tighten the tension.

The fixing portion 653 may be composed of a nut to which the screw shaft as the male fixing portion 654 is screwed. The auxiliary pulley 651 can be fixed to the guide 652 when the screw shaft as the male fixing part 654 is screwed to the nut serving as the fixing part 653 and the guide 652 is pressed.

The auxiliary pulley 651 supports the belt 630 when the auxiliary pulley 651 is lifted with the male fixing portion 654 passing through the lift hole 655 of the guide 652, The lower portion of the belt 630 comes close to the lower portion of the magnetic force portion 620. As a result, That is, the tension of the belt 630 is maintained by the pressing of the auxiliary pulley 651. After the screw shaft as the male fixing part 654 is moved to the fixing hole 656, the nut serving as the fixing part 653 is screwed. That is, the auxiliary pulley 651 is prevented from being lowered from the guide 652.

The tension of the belt 630 can be adjusted by the belt tension adjuster 650 so that the belt 630 can be easily rotated when the belt 630 is tightly tensioned, The belt 630 can be easily replaced.

Subsequently, when the rotating concrete force of the motor is transmitted to any one of the pulleys 610 and the belt 630 is rotated, when the waste concrete is conveyed by the conveyor, the waste concrete is mixed with the waste concrete by the magnetic force of the magnetic force part 620 The steel is attached to the belt 630 to be rotated. At this time, as the belt 630 is rotated, the steel material attached to the belt 630 moves away from the magnetic force portion 620. At this time, since the iron material is moved away from the magnetic force part 620 by the conveyance plate 640 moved by the rotation of the belt 630, the iron material falls from the belt 630 and can be seated on another conveyor.

As described above, iron such as reinforcing bars, bolts or nuts mixed in the waste concrete conveyed by using the iron sorting member 600 can be selected so that only the pure waste concrete can be transferred to the next process.

As shown in FIGS. 1 and 6, the foreign matter sorting member 500 is used to sort floating matters floating in the water and pulverized fine particles in the separated foreign matter sorting step S500. 6, the foreign matter sorting member 500 includes a water tank 510 in which waste concrete is received in a state of being filled with water, and a water tank 510 disposed at an upper portion of the water tank 510 to select floating matters floating on the water, The waste concrete accommodated in the water tub 510 in a state where one end is received inside the water tub 510 and the other end is disposed outside the water tub 510 is selected And a waste concrete sorting unit 530 for discharging the waste concrete to the outside of the water tub 510.

The water tray 510 may be formed in a shape of a vertical beam so that the received waste concrete is collected at the bottom. Here, in the water tub 510, waste concrete and foreign materials such as wood and styrofoam generated by demolition of the building and soil can be accommodated. At this time, the waste concrete accommodated in the water tank 510 can be cleaned by the water filled in the water tank 510. The waste cement or soil separated from the waste concrete sinks to the lower part of the water tank 510, and the foreign matter floats on the upper part of the water tank 510 and floats.

In addition, a reclamation space 511 is formed in the water tub 510 to collect fine particles such as waste cement or soil separated from the waste concrete. In the reclamation space 511, a fine powder such as waste cement or soil is allowed to flow into the recycling space 511, Preventing portions 512 for preventing inflow of concrete are formed. The collecting space 511 is formed in the lower part of the water tub 510 and the preventing part 512 is formed in the upper part of the collecting space 511.

Therefore, the waste concrete can not be passed through the prevention part 512 and can be discharged to the outside by the waste concrete sorting part 530. The soil that has passed through the prevention part 512 can be processed after being collected in the collection space 511.

In addition, the upper portion of the water tub 510 may be provided with a blocking portion 513 for blocking the waste concrete contained in the waste concrete contained in the waste concrete. The blocking portion 513 may be formed of a plate material or a net so that the waste concrete falling from the outside into the water tub 510 can be prevented from colliding with the floating material sorting portion 520. That is, the blocking part 513 can protect the suspended particle sorting part 520 from waste concrete falling down.

In addition, the water tub 510 may be provided with a water tub circulation unit 514 for circulating the water contained therein. The water tub circulation unit 514 includes an upper pipe 515 connected to the upper portion of the water tub 510, a lower pipe 516 connected to penetrate the lower portion of the water tub 510, And a pump 517 connected to the pipe 516 to pump the water which is perfused through the upper pipe 515 to the lower pipe 516.

The upper pipe 515 may be provided with a filter that allows the inflow of water while preventing the inflow of foreign matter to the end.

Therefore, when the pump 517 is operated, the upper water located in the upper part of the water tank 510 flows through the upper pipe 515 and can be supplied to the lower part of the water tank 510 through the lower pipe 516. That is, since the supernatant of the water tank 510 is supplied to the waste concrete located in the lower part of the water tank 510, the foreign matter attached to the waste concrete can be easily separated.

The float sorting unit 520 includes a first pulley 521 provided at an upper portion of the water tub 510 and rotated by external pressure, a second pulley 522 spaced apart from the first pulley 521, A rotating belt 523 provided on the pulley 521 and the second pulley 522 and rotated by the rotation of the first pulley 521 and the second pulley 522; And a scum discharging portion 524 which is moved by rotation of the scum 523 to discharge foreign substances floating in the water to the outside of the water tub 510.

The first pulley 521 and the second pulley 522 are spaced laterally from the upper part of the water tub 510. At this time, a motor may be connected to the first pulley 521 and the second pulley 522.

Since the rotating belt 523 is interposed between the first pulley 521 and the second pulley 522, the rotating belt 523 is in a horizontal state at the upper part of the water tub 510.

The floating material discharging portion 524 is formed in the form of a fork collecting the foreign substances. Since the float discharge portions 524 are moved horizontally between the first pulley 521 and the second pulley 522 together with the rotating belt 523 to be rotated, the foreign substances floating in the water tank 510 are pushed, To the outside of the second housing 510.

Therefore, when the first pulley 521 is rotated by the rotational force of the motor, the first pulley 521 and the rotating belt 523 provided on the second pulley 522 are rotated, Such as wood or styrofoam floating on the upper part of the water tank 510, to be discharged to the outside of the water tub 510 continuously.

The waste concrete sorting unit 530 includes a drive pulley 531 provided outside the water tub 510 and rotated by external pressure, a driven pulley 532 rotatably provided inside the water tub 510, A discharge belt 533 installed in the driven pulley 531 and the driven pulley 532 for discharging the waste concrete contained in the water tub 510 to the outside of the water tub 510 by the rotation of the drive pulley 531 and the driven pulley 532, And a waste concrete discharge unit 534 formed on the discharge belt 533 and moved by the rotation of the discharge belt 533 to discharge waste concrete stored in the water tub 510 to the outside of the water tub 510. [

The drive pulley 531 can be rotated by the rotational force of the motor.

It is preferable that the driven pulley 532 is installed close to the central portion of the water tub 510.

The discharge belt 533 is preferably formed with a projection for preventing the waste concrete from slipping. Here, the drive pulley 531 and the discharge belt 533 are inclined so that the discharge belt 533 is inclined.

The waste concrete discharge portion 534 may be formed of a rectangular projection formed in the lateral direction on the discharge belt 533 so as to collect waste concrete.

Therefore, when the drive pulley 521 is rotated by the motor in the state where the waste concrete is received in the water tank 510, the discharge belt 533 provided on the drive pulley 531 and the discharge belt 533 is rotated, The waste concrete washed by the water in the water tub 510 can be discharged to the outside of the water tub 510 by the unit 534.

Since the waste concrete accommodated in the water tray 510 is washed and discharged, the waste concrete can be supplied to the next process with the soil removed, and foreign materials such as wood and styrofoam can be removed.

The waste concrete sorting unit 530 includes a waste concrete moving unit 540 provided in the water tub 510 to move the waste concrete accommodated in the water tub 510 to the discharge belt 533 by the rotational force of the driven pulley 532 . The waste concrete moving part 540 is provided with a rotating roller 541 rotatably provided in the water tub 510 and a rotating roller 541 and a driven pulley 532 which are provided at both ends thereof to rotate the driven pulley 532, The waste concrete conveyed in the water tub 510 is conveyed to the discharge belt 533 while being rotated together with the rotary roller 541 so as to protrude from the rotary roller 541 And a transfer unit 543.

The rotating roller 541 is rotatably installed on a bracket fixed to the inner peripheral surface of the water tub 510.

The power transmitting portion 542 includes a pulley formed on the rotating roller 541 and a driven pulley 532, respectively, and a belt interposed between the pulleys. At this time, the pinion and the chain may be applied instead of the pulley and the belt.

The transfer unit 543 may be formed in the form of a plate or a fork so as to be spaced apart from the outer circumferential surface of the rotary roller 541 by a predetermined distance.

Therefore, when the driven pulley 532 is rotated in the process of rotating the discharge belt 533, the power transmitting portion 542 is rotated to rotate the rotating roller 541, (543) transfers the waste concrete to the discharge belt (533). Thus, the discharge belt 533 can easily discharge a large amount of waste concrete to the outside without remaining in the water tray 510.

As shown in FIGS. 1 and 7, the waste concrete crushing step (S600) completes the recycled aggregate by using the cone crusher 200 for crushing waste concrete from which foreign substances have been removed. As shown in FIG. 7, the cone crusher 200 includes an inflow tank 210 in which an inner space is opened upward to introduce waste concrete, and an inflow tank 210 communicating with a lower portion of the inflow tank 210, A receiving part 220 in which the waste concrete of the tank 210 falls and is accommodated and a rotatably provided inside the receiving part 220 so as to be rotated by an external pressure so as to press waste concrete to the inner peripheral surface of the receiving part 220 A crushing unit 230 for crushing and a height adjusting unit 240 for adjusting the height of the receiving unit 220 to adjust the size of the waste concrete to be crushed.

The inflow tank 210 is formed with an inclined surface 211 that is inclined toward the center so that the incoming waste concrete collects at the center from the bottom and protrudes inward from the upper periphery to prevent the waste concrete from being separated from the outside in the process of pulverizing the waste concrete An inner jaw 212 is formed.

The receiving portion 220 is formed in a cylindrical shape having an inner space opened at both ends, and protrusions and protrusions are formed on the inner circumferential surface so that the waste concrete is crushed.

The crushing unit 230 is constituted by a shaft having a cone shape or an umbrella shape, and a projection capable of crushing waste concrete is formed on the outer circumferential surface. Therefore, a space for lowering the upper light can be formed between the crushing part 230 and the receiving part 220. That is, the waste concrete positioned between the crushing unit 230 and the receiving unit 220 can be crushed by being pressed by the crushing unit 230 to be rotated. Then, the pulverized waste concrete can be crushed to a smaller size while gradually descending downward.

The crushing unit 230 can be eccentrically rotated at a high speed so as to crush the waste concrete at a high cost.

The height adjusting portion 240 includes an extension portion 241 extending to the lower portion of the receiving portion 220 and a screw shaft 242 projecting upward from both sides of the extending portion 241 and passing through both sides of the receiving portion 220 A first nut 243 which is screwed on the screw shaft 242 and supports the lower part of the receiving part 220 and a second nut 243 which is screwed on the screw shaft 242, And a second nut 244 for supporting the second nut 244.

The accommodating portion 220 has a flange or a protruding protrusion formed at an upper portion of the extended portion 241 at the lower portion thereof. The screw shaft 242 protrudes upward from the flange or protruding jaw of the extension 241.

Since the first nut 243 and the second nut 244 support the lower portion and the upper portion of the receiving portion 220 in a state where the first nut 243 and the second nut 244 are screwed to the screw shaft 242, Even when vibration is generated in the course of pulverization, the state in which the accommodating portion 220 is spaced apart from the extension portion 241 can be firmly maintained.

Therefore, the first nut 243 and the second nut 244 can be loosened or tightened to maintain the distance a between the receiving portions 220 in the extended portion 241 or maintain the distance b apart from each other .

As described above, since the outer surface of the crushing unit 230 is close to the inner surface of the accommodating unit 220 when the accommodating unit 220 is held at the interval (a) close to the extended unit 241, the waste concrete is crushed, The outer side surface of the crushing unit 230 may be separated from the accommodating unit 220 (sand) by a distance b between the crushing unit 230 and the crushing unit 230, ), The waste concrete is crushed and a large-sized recycled aggregate having a diameter of 5 to 8 mm can be obtained. Here, the diameter of the recycled aggregate is preferably 5 mm.

Then, the pulverized recycled aggregate can be conveyed to the next process by the conveyor.

As shown in FIGS. 1 and 8, the circulating fine aggregate cleaning step S700 cleans the pulverized recycled aggregate using the recycled aggregate cleaning member 300 to remove fine particles. 8, the recycled aggregate cleaning member 300 includes a washing water supplying unit 310 for supplying washing water, a washing water path 320 formed to be inclined so that the washing water supplied from the washing water supplying unit 310 flows, A moving plate 330 installed on the washing water path 320 so as to be able to move in a state of being immersed in washing water while being spaced apart from the bottom of the moving path 320 and moving the circulating aggregate, An elastic body 340 and a vibration unit 350 that provides vibration to the moving plate 330 so that the moving plate 330 vibrates.

Here, the wash water may be composed of water.

The washing water supply unit 310 may include a nozzle installed in the washing water path 320 to inject washing water supplied from the outside into the washing water path 320. Accordingly, the washing water supply unit 310 may be installed in the washing water path 320 to inject the washing water into the washing water path 320.

The washing water path 320 may include an inclined plate, an outer wall formed on both sides of the inclined plate, and a closing plate closing an end of the outer wall so that water is filled between the outer wall and the outer wall. Accordingly, fine particles such as waste cement, in which washing water is separated from the recycled aggregate, may flow together and collect at the end of the washing water path 320.

Furthermore, the washing water path 320 may be provided with an ultrasonic wave generating member (not shown) for generating ultrasonic waves. Therefore, the waste cement can be separated from the circulating aggregate by applying ultrasonic waves to the circulating aggregate, so that the circulated aggregate can be cleaned more cleanly.

The moving plate 330 may be formed of a perforated plate having perforated holes having a diameter smaller than that of the pulverized recycled aggregate. The moving plate 330 includes a low speed portion for causing the recycled aggregate to move at a low speed. The low speed portion may be formed of corrugated irregularities formed on the moving plate 330 or a jaw formed on the moving plate 330 at regular intervals. Therefore, since the recycled aggregate moving in the moving plate 330 collides with the low speed portion, the waste cement can be easily removed from the recycled aggregate, and the waste cement can be moved at a low speed, so that the cleaning time can be increased and the cleaning effect can be increased.

The elastic body 340 may be composed of a compression spring. That is, the moving plate 330 can be elastically supported by the elastic body 340 and can be spaced apart from the bottom of the washing water path 320.

The vibration unit 350 may be constituted by a vibrator. Accordingly, since the moving plate 330 is vibrated by the vibrating unit 350, the moving recycled aggregates can be continuously cleaned by being collided with the moving plate 330 continuously.

Therefore, when the circulating aggregate is supplied to the moving plate 330 in a state where the washing water is supplied to the washing water channel 320 by the washing water supplying unit 310, the circulating aggregate seated on the moving plate 330 is immersed in the washing water. At this time, when the moving plate 330 is shaken by the vibrating unit 350, the circulating aggregate can be moved in an inclined direction in the moving plate 330 which swings. Furthermore, waste cement is desorbed by the washing water during the collision while the recycled aggregate is shaken in the moving plate 330. That is, the recycled aggregate can be recycled as gravel or sand that can be reused in a clean condition since the waste cement is desorbed. At this time, the finished aggregate is conveyed to the next process by the conveyor belt.

As shown in FIGS. 1 and 9, in the circulating fine aggregate drying step S800, air is supplied to the washed recycled aggregate by using the recycled aggregate drying member 400 to be dried. 9, the recycled aggregate drying member 400 includes a drying passage 410 through which the recycled aggregate material is sloped and conveyed, and a drying passage 410 which is installed to be able to flow while being spaced apart from the bottom of the drying passage 410, A circular aggregate elastic body 430 provided in the drying passage 410 to elastically support the lower portion of the circular aggregate moving plate 420 and a circular aggregate moving plate 420 disposed in the drying passages 410, An air supply unit 450 for forcibly supplying air to the recycled aggregate moving plate 420 and a bottom of the drying passages 410; And a water supply unit 460 for supplying water to the water supply unit 460.

The drying passage 410 may be composed of an inclined plate and an outer wall formed on both sides of the inclined plate.

The recycled aggregate moving plate 420 may be formed of a perforated plate having a perforation hole having a smaller diameter than the recycled aggregate material.

The recycled aggregate elastic body 430 may be composed of a compression spring. That is, the recycled aggregate elastic body 430 may be separated from the bottom of the drying passages 410 by supporting the recycled aggregate moving plate 420 in an elastic manner.

The cyclic aggregate vibration unit 440 may be composed of a vibrator. Therefore, since the circulating aggregate moving plate 420 is vibrated by the circular aggregate vibrating unit 440, the moving waste concrete can continuously hit the circulating aggregate moving plate 420.

The air supply unit 450 may be configured as a blowing fan for forcibly supplying air. Accordingly, when air is forcibly supplied by the air supply unit 450, the circulating aggregate conveyed from the circulating aggregate moving plate 420 can be dried quickly.

The water supply part 460 may be formed of a nozzle installed in the drying passage 410 and spraying water supplied from the outside. Accordingly, when water is injected toward the bottom of the drying passageway 410, the water supply part 460 discharges small amounts of foreign matter or waste concrete such as dust separated from the circulating aggregate and is not attached to the circulating aggregate again, 410). ≪ / RTI >

As shown in FIG. 1, in the concrete preparation step S900, a ready-mixed concrete is manufactured using common fine aggregate and recycled coarse aggregate. That is, 36 wt% of common fine aggregate, 40 wt% of recycled coarse aggregate, 16 wt% of cement, 7 wt% of water and 1 wt% of AE water reducing agent are mixed.

The recycled coarse aggregate is an aggregate in the form of a crushed and crushed gravel, as described above.

The common fine aggregate is used to make common ready mixed concrete, and it is sand collected from nature and mixed with cement to maintain strong hardness.

Cement strengthens the bonding strength of components including all aggregates.

As described above, the manufactured ready-mixed concrete can be supplied to the work site without being hardened by being carried on the ready-mixed truck.

As described above, according to the present invention, cement mortar attached to waste concrete is removed from construction wastes, which are generated in large quantities every day, to produce aggregates corresponding to grade 1 of recycled aggregate of Korean Industrial Standard, and recycled as domestic aggregate resources , The prevention of pollution caused by landfill and the shortage of landfill land can be solved, which is a very useful invention that can be widely applied to the method of producing recycled aggregate.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is to be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

S100: Waste concrete classification step S200: Waste concrete cutting step
S300: Waste concrete crushing step S400: Steel material sorting step
S500: Foreign matter sorting step S600: Waste concrete crushing step
S700: circulating fine aggregate washing step S800: circulating fine aggregate drying step
S900: Preparation stage of ready-mixed concrete
100: jaw crusher 110: guide member
111: ramp 112:
113: hopper 114: base portion
115: shock absorbing part 120: supporting member
130: Price member 140: Flow member
141: moving part 142: rotating part
143: Connection
600: iron sorting member 610: pulley
620: magnetic portion 630: belt
640: Transfer plate 650: Belt tension adjusting part
651: Auxiliary pulley 652: Guide
653: Fixing portion 654: Male fixing portion
655: lift hole 656: fixed hole
500: foreign matter sorting member 510: water tank
511: Collecting space 512:
513: shutoff section 514: water tank circulation section
515: upper pipe 516: lower pipe
517: pump 520: float sorting section
521: first pulley 522: second pulley
523: rotating belt 524:
530: Waste concrete sorting part 531: Driving pulley
532: driven pulley 533: discharge belt
534: Waste concrete discharge part 540: Waste concrete moving part
541: Rotation roller 542: Power transmission part
543:
200: Cone crusher 210: Inflow tank
220: accommodating portion 230: crushing portion
240: height adjuster 241: extension
242: screw shaft 243: first nut
244: second nut
300: Recycled aggregate cleaning member 310: Washing water supply unit
320: with washing water 330: moving plate
340: Elastic body 350:
400: Recycled aggregate drying member 410: Drying passage
420: Recycled aggregate moving plate 430: Recycled aggregate elastic body
440: Circular aggregate vibration part 450: Air supply part
460: water supply section

Claims (16)

A waste concrete classification step (S100) for sorting waste concrete that can be recycled among the construction waste generated as the building is demolished,
A waste concrete cutting step S200 for cutting the waste concrete using a cutting device so as to separate the reinforcing bars,
A waste concrete crushing step (S300) using a jaw crusher (100) for crushing waste concrete to be cut,
A steel sorting step (S400) using a steel sorting member (600) for sorting the steel material contained in the crushed waste concrete by a magnetic force,
A foreign matter sorting step (S500) using the foreign matter sorting member (500) to sort floating matters and precipitated foreign matters in a state where the pulverized waste concrete is settled in water,
A waste concrete crushing step (S600) for finishing the recycled aggregate using the cone crusher (200) for crushing the waste concrete from which foreign matter has been removed,
A circulating fine aggregate cleaning step (S700) using the cleaning member (300) to clean the pulverized recycled aggregate to remove fine particles separated from the recycled aggregate,
(S900) for manufacturing ready-mixed concrete using ordinary fine aggregate collected from nature and recycled coarse aggregate,
The iron sorting member (600)
A plurality of pulleys 610 spaced apart at regular intervals,
A magnetic force part 620 positioned between the pulleys 610 to generate a magnetic force to attract the iron material mixed in the ferrite concrete,
A belt 630 installed on the pulleys 610 in a state surrounding the magnetic force part 620,
A transfer plate 640 which is protruded from the belt 630 and transfers the iron material attached to the belt 630 by the magnetic force of the magnetic force portion 620 to the outside of the magnetic force portion 620 to be removed from the belt 630,
And a belt tension adjusting unit 650 that is extended in a state fixed to the magnetic force unit 620 and supports the belt 630 to adjust the tension of the belt 630,
The belt tension adjusting unit 650
An auxiliary pulley 651 for supporting the belt 630,
A guide 652 formed in the magnetic force portion 620 and guiding the lifting and lowering of the auxiliary pulley 651,
And a fixing portion 653 for fixing the auxiliary pulley 651 in the raised or lowered state in the guide 652 to the guide 652,
The auxiliary pulley 651 is provided with a bearing at the center of both sides thereof, a male fixing portion 654 coupled to the fixing portion 653 is projected from the bearing,
The guide 652 is raised on the upper side of the magnetic force part 620 and a vertical lift hole 655 for lifting and lowering the male fixing part 654 of the auxiliary pulley 651 is formed long in the vertical direction, Wherein a fixing hole (656) for fixing the male fixing part (654) is formed of a plate material so as to be laterally communicated at an upper part of the elevating hole (655).
The method of claim 1, wherein the jaw crusher (100)
A guide member 110 for guiding the inflow of waste concrete supplied from outside,
A support member 120 provided at one side of the lower portion of the guide member 110 to support one side of waste concrete,
A price member 130 which is provided at the lower side of the guide member 110 to flow on the other side and flows by the external pressure to charge the other side of the waste concrete supported by the support member 120,
And a flow member (140) that repetitively pushes and flows the price member (130)
The guide member 110
A ramp 111 formed obliquely for moving waste concrete supplied from the outside,
A release preventing member 112 provided on the ramp 111 to prevent the waste concrete from coming off from the waste concrete to be moved,
And a hopper (113) provided at an end of the ramp (111) and guiding the waste concrete between the support member (120) and the price member (130).
[3] The apparatus according to claim 2,
A base portion 114 fixed to the upper portion of the ramp 111,
And a shock absorbing part (115) which is in contact with the waste concrete with one end connected to the base part (114).
delete delete A waste concrete classification step (S100) for sorting waste concrete that can be recycled among the construction waste generated as the building is demolished,
A waste concrete cutting step S200 for cutting the waste concrete using a cutting device so as to separate the reinforcing bars,
A waste concrete crushing step (S300) using a jaw crusher (100) for crushing waste concrete to be cut,
A steel sorting step (S400) using a steel sorting member (600) for sorting the steel material contained in the crushed waste concrete by a magnetic force,
A foreign matter sorting step (S500) using the foreign matter sorting member (500) to sort floating matters and precipitated foreign matters in a state where the pulverized waste concrete is settled in water,
A waste concrete crushing step (S600) for finishing the recycled aggregate using the cone crusher (200) for crushing the waste concrete from which foreign matter has been removed,
A circulating fine aggregate cleaning step (S700) using the cleaning member (300) to clean the pulverized recycled aggregate to remove fine particles separated from the recycled aggregate,
(S900) for manufacturing ready-mixed concrete using ordinary fine aggregate collected from nature and recycled coarse aggregate,
The foreign matter sorting member 500
A water tank 510 in which waste concrete is filled with water,
A float sorting unit 520 disposed at an upper portion of the water tank 510 to selectively discharge floating water floating on the water to the outside of the water tank 510,
A waste concrete sorting part for sorting the waste concrete accommodated in the water tub 510 and discharging the waste concrete to the outside of the water tub 510 in a state where one end is received inside the water tub 510 and the other end is disposed outside the water tub 510 530)
The waste concrete sorting unit 530
A driving pulley 531 provided outside the water tub 510 and rotated by external pressure,
A driven pulley 532 rotatably provided inside the water tub 510,
A discharge belt (not shown) for discharging the waste concrete accommodated in the water tub 510 to the outside of the water tub 510 by rotation of the drive pulley 531 and the driven pulley 532 is provided to the drive pulley 531 and the driven pulley 532, 533,
And a waste concrete discharge portion 534 formed on the discharge belt 533 and moved by the rotation of the discharge belt 533 to discharge the waste concrete stored in the water tank 510 to the outside of the water tank 510,
The waste concrete sorting unit 530 includes a waste concrete moving unit 540 provided in the water tub 510 to move the waste concrete accommodated in the water tub 510 to the discharge belt 533 by the rotational force of the driven pulley 532 ,
The waste concrete moving part 540
A rotating roller 541 rotatably provided in the water tub 510,
A power transmitting portion 542 provided at both ends of the rotating roller 541 and the driven pulley 532 to transmit the rotational force of the driven pulley 532 to the rotating roller 541,
And a transfer part 543 protruding from the rotating roller 541 and rotated together with the rotating roller 541 to transfer the waste concrete stored in the water tub 510 to the discharge belt 533. [ And a method for manufacturing a concrete using fine aggregate.
[6] The water treatment system according to claim 6, wherein a reclamation space 511 is formed in the water tank 510 to collect the fine particles separated from the waste concrete, and the recycling space 511 is provided with a prevention part 512) are formed on the outer surface of the concrete aggregate.
7. The method of claim 6, wherein the upper portion of the water tank (510) is provided with a cut-off portion (513) for preventing the waste concrete contained therein from being affected by the float sorting portion (520) Gt;
The water treatment system according to claim 6, wherein the water tank (510) is provided with a water tank circulation part (514)
The water tub circulation unit 514
An upper pipe 515 connected to the upper portion of the water tub 510 so as to pass therethrough,
A lower pipe 516 penetratingly connected to a lower portion of the water tub 510,
And a pump (517) connected to the upper pipe (515) and the lower pipe (516) for pumping the water flowing through the upper pipe (515) to the lower pipe (516). The circulating coarse aggregate and the fine aggregate Method of manufacturing used concrete.
[Claim 6] The scum float sorting apparatus according to claim 6,
A first pulley 521 provided at an upper portion of the water tub 510 and rotated by external pressure,
A second pulley 522 spaced apart from the first pulley 521,
A rotary belt 523 installed on the first pulley 521 and the second pulley 522 and rotated by the rotation of the first pulley 521 and the second pulley 522,
And a scum discharging portion (524) formed on the rotating belt (523) and moved by rotation of the rotating belt (523) to discharge foreign substances floating in the water to the outside of the water tub (510) A method for manufacturing a concrete using fine aggregate.
delete delete The cone crusher (200) according to claim 1, wherein the cone crusher
An inflow tank 210 into which an inner space opens upward to introduce waste concrete,
A receiving part 220 provided in communication with the lower part of the inflow tank 210 to receive the waste concrete of the inflow tank 210 by dropping,
A crushing part 230 rotatably provided in the accommodating part 220 and rotated by external pressure to pressurize the waste concrete to the inner circumferential surface of the accommodating part 220 to crush the waste concrete,
And a height adjuster (240) for adjusting the height of the receiving part (220) to adjust the size of the waste concrete to be crushed. The method of manufacturing a concrete using recycled coarse aggregate and fine aggregate.
14. The apparatus of claim 13, wherein the height adjuster (240)
An extension portion 241 extending to a lower portion of the accommodating portion 220,
A screw shaft 242 protruding upward from both sides of the extension portion 241 and passing through both sides of the housing portion 220,
A first nut 243 for supporting a lower portion of the receiving portion 220 in a state of being screwed to the screw shaft 242,
And a second nut (244) screwed to the screw shaft (242) and supporting the upper part of the receiving part (220).
The recycled aggregate cleaning member (300) according to claim 1, wherein the recycled aggregate cleaning member
A wash water supply unit 310 for supplying wash water,
A washing water path 320 formed to be inclined so that the washing water supplied from the washing water supplying unit 310 flows,
A moving plate 330 which is spaced from the bottom of the washing water path 320 and is installed to be able to flow in a state of being immersed in washing water to move the circulating aggregate,
An elastic body 340 provided in the washing water path 320 and elastically supporting the lower part of the moving plate 330,
And a vibrating part (350) for providing a vibration to the moving plate (330) so that the moving plate (330) is shaken. The method of manufacturing a concrete using recycled coarse aggregate and fine aggregate.
[6] The method of claim 1, further comprising a step (S800) of drying the circulated fine aggregate by supplying air to the washed circulated aggregate using the recycled aggregate drying member (400)
The drying member 400
A drying passageway 410 through which the recycled agglomerated material is sloped and conveyed,
A recycled aggregate moving plate 420 installed to be able to flow while being separated from the bottom of the drying passages 410 to move the recycled aggregate material,
A recycled aggregate elastic body 430 provided in the drying passage 410 to elastically support a lower portion of the recycled aggregate moving plate 420,
A circulating aggregate vibration unit 440 for providing vibration to the circulating aggregate moving plate 420 so that the circulating aggregate moving plate 420 is shaken,
An air supply unit 450 for forcibly supplying air to the circulating aggregate moving plate 420,
And a water supply part (460) for supplying water to the bottom of the drying passageway (410).

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