KR100552351B1 - Fines eliminator for recycled coarse aggregate - Google Patents

Abstract

The present invention relates to a recycled coarse aggregate fine powder removal device that provides a coarse aggregate of high quality by removing foreign substances attached to or contained in recycled coarse aggregate produced by treating construction waste, and more specifically, waste concrete contained in construction waste. Recycled coarse aggregate produced by crushing and sorting is attached to or included on the surface of the coarse aggregate to reduce the quality of recycled coarse aggregate and foreign substances less than 5mm without using water to obtain high quality recycled coarse aggregate The air injector is formed with an air nozzle for injecting high pressure air in the upper part, and the inside of the vibrating screen is sealed to remove fine powder by an air purifier to prevent scattering dust and the like. Removal of finely divided coarse aggregate which produces economically good finely coarse aggregate without secondary treatment It relates to the device.

Construction waste, fines, foreign substances, nozzles, suction device, recycled coarse aggregate, scattering dust

Description

Fine Eliminator for Recycled Coarse Aggregate {Fines Eliminator for Recycled Coarse Aggregate}

1 is a perspective view showing a regeneration coarse aggregate fine powder removing apparatus according to the present invention,

2 is an enlarged view showing a portion A according to the present invention;

Figure 3 is a first side cross-sectional view showing a recycled coarse aggregate fine powder removing apparatus according to the present invention;

Figure 4 is a second side cross-sectional view showing a regeneration coarse aggregate fine powder removing apparatus according to the present invention

5 is a perspective view illustrating a sorting network according to the present invention;

6 is a perspective view showing another embodiment of the sorting network according to the present invention;

Figure 7 is a perspective view of the aggregate spread bar according to the present invention.

<Brief description of symbols for the main parts of the drawings>

1: vibrating screen 11: body 12: stand

13: Screening network 131: Unfolding part 14: Coarse aggregate outlet

15: Aggregate transport conveyor 16: Foreign material removal pipe 161: Outlet

162: suction port 17: foreign matter conveying conveyor 18: vibration generator

19: shock absorber 3: aggregate spread bar 31: fixed bar

32: spreading plate 4: air sprayer 41: air nozzle

5: eddy prevention plate 6: differential feed pipe 61: differential inlet

7: Negative pressure fan 8: Air purifier

The present invention relates to a recycled coarse aggregate fine powder removal device that provides a coarse aggregate of high quality by removing foreign substances attached to or contained in recycled coarse aggregate produced by treating construction waste, and more specifically, waste concrete contained in construction waste. Recycled coarse aggregate produced by crushing and sorting is attached to or included on the surface of the coarse aggregate to reduce the quality of recycled coarse aggregate and foreign substances less than 5mm without using water to obtain high quality recycled coarse aggregate The air injector is formed with an air nozzle for injecting high pressure air in the upper part, and the inside of the vibrating screen is sealed to remove fine powder by an air purifier to prevent scattering dust and the like. Removal of finely divided coarse aggregate which produces economically good finely coarse aggregate without secondary treatment It relates to the device.

Generally, about 70% of waste concrete that can be recycled is included in the construction wastes that accompany construction, and many technologies are being developed to recycle it. Rather than producing recycled aggregates, it simply removes foreign substances such as vinyl and wood, and shreds them to a certain size or less to use them for covering or reclaiming.

Due to this, high-quality aggregates used for concrete are not only causing waste of national resources as coarse aggregates generally used in quarries are used, and the surrounding environment is destroyed due to the development of quarries.

In order to produce the above-mentioned high quality recycled aggregates, the removal of fines and foreign matters generally affecting the quality of the recycled aggregates should be preceded. Representative methods for this include using a manpower selection method and blowing and water buoyancy. The method is the most used.

However, there is a problem in that the method by manpower is impossible to select except the foreign matter which can be screened by the naked eye, and the method by air blowing reduces the efficiency of separating foreign matters due to curtain phenomenon and the secondary by scattering dust. There is a problem that environmental pollution occurs, and the method of using buoyancy of water is capable of removing light foreign substances such as wood or vinyl, but it is hardly effective to remove fine powder or heavy matter attached to aggregate. In addition, to prevent secondary pollution by water used to separate the foreign matter has to be equipped with a separate water treatment facility, there was a problem that the double installation and operation costs occur.

In addition, when the recycled coarse aggregate produced through the intermediate treatment of construction waste such as waste concrete is used as aggregate that requires high quality, such as for concrete, without separate powder removal process, Due to the adverse effects caused by the workability of the concrete is a factor that reduces the strength and durability.

Therefore, in order to intermediate high-quality recycled aggregates, the prior art to remove fine powders is essential, but the most commonly used technology for removing fine powders from coarse recycled aggregates is water-based washing method, which is a secondary environment such as sludge. Along with the generation of contaminants, there is a need for a separate facility to purify the water used for washing.

The present invention was created in order to solve the above problems, recycled coarse aggregate on the top of the sealed vibrating screen 5mm sorting net is installed to remove the fine powder and foreign matter to reduce the quality of the recycled coarse aggregate crushed in the crusher In order to increase the efficiency of fine powder and foreign matter removal by installing the aggregate spreading device so that the high pressure air is evenly spread on the coarse aggregate. In addition, a negative pressure generating fan is installed to generate negative pressure to prevent the removed fine powder from circulating back to the sorting network, and a bag filter is installed so that the fine powder passing through the negative pressure generating fan does not cause secondary air pollution. The foreign material removal device is installed with a high-pressure air to install a foreign material removal hole that can remove foreign substances that have not passed through the negative pressure generating fan below the negative pressure generating fan to prevent the negative pressure generating fan from being damaged. The purpose is to produce high quality recycled coarse aggregate.

As a specific means for achieving the present invention,

Forming a screening net on the upper part of the main body to produce high-quality recycled coarse aggregates by increasing the quality of the coarse aggregates attached or embedded with foreign substances, and forms a coarse aggregate discharge port for discharging coarse aggregates to one side thereof, and coarse aggregates at the bottom thereof. It forms an aggregate conveyance conveyor for transporting and discharging, and forms a foreign substance removal tube for removing foreign matters dropped by the screening net at the bottom of the main body, and forms a foreign matter conveying conveyor for transporting and discharging foreign substances at the lower end of the main body, and cam to one side of the main body. And a vibration generator comprising a motor and a vibration screen inclined at an appropriate angle to one side by allowing the shock absorber to be installed above the pedestal on both sides of the main body by the vibration generator.

The vibrating screen forms an aggregate spreading bar so as to spread the coarse aggregate at an appropriate distance from the upper part of the sorting network, and discharges a plurality of air nozzles supplied from the outside to remove foreign substances attached to the coarse aggregate to one side thereof. The air injector is formed, and the fine powder is installed to maintain the negative pressure at the same time as to install a circumference prevention plate inside the vibrating screen so that the fine powder is not flowed back to the sorting network by the high pressure air pressure discharged by the air injector. A negative pressure generating fan connected to the pipeline and an air purifier collecting the fine powder passing through the negative pressure generating fan; Forming a height of the foreign material removal pipe below the fine particle suction opening of the fine feed pipe to prevent foreign matter except the fine powder of the air purifier from passing through the negative pressure generating fan and causing damage to the fan; The sorting network is formed in the bottom of the aggregate spread bar in the form of an unfolded portion of the expansion without clogging two or more sorting holes at a suitable distance to form a thick aggregate effectively spread; The foreign material removal tube is formed to remove the foreign matter heavier than the air by forming a diameter of the hole smaller than the inlet of the discharge portion to generate a pressure difference, the aggregate spread bar is fixed to the upper portion of the vibration screen, and the fixed Spread plate formed in a flexible plate shape to expand the coarse aggregate on one side of the bar and is formed by forming a plurality of height adjustment grooves on both sides to adjust the height according to maintenance and situation.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a regeneration coarse aggregate fine powder removing apparatus according to the present invention, Figure 2 is an enlarged view showing a portion A according to the present invention, Figure 3 shows a regeneration coarse aggregate fine powder removing apparatus according to the present invention One is a first side cross-sectional view, Figure 4 is a second side cross-sectional view showing a recycled coarse aggregate fine powder removing apparatus according to the present invention, Figure 5 is a perspective view showing a sorting network according to the present invention, Figure 6 is the present invention Figure 7 is a perspective view showing another embodiment of the sorting net according to, Figure 7 is a perspective view showing the aggregate spread bar according to the present invention.

As shown in Figures 1 to 4, the basic configuration of the recycled coarse aggregate fine powder removing apparatus according to the present invention forms a sorting net 13 on the top of the main body 11 consisting of a conventional vibrating screen 1, Form a coarse aggregate discharge port 14 for discharging coarse aggregate to one side, and forms an aggregate transport conveyor (15) for transporting and discharging coarse aggregate to the bottom of the coarse aggregate discharge port 14 is filtered by the screening net (13) It is configured to discharge only coarse aggregates.

In addition, a foreign material transport conveyor for forming a foreign material removal tube 16 for removing the foreign matter dropped by the sorting network 13 at the bottom of the main body 11, and transported and discharged the foreign matter at the lower end of the foreign material removal tube 16. (17) is formed so as to discharge the foreign matter of 5mm or less, that is, the earth and sand filtered out by the sorting net (13).

At this time, a vibration generator 18 composed of a cam and a motor is formed at one side of the main body 11, and a shock absorber 19 is formed at both sides of the main body so as to cushion the vibration generated by the vibration generator 18, thereby forming a pedestal upper part ( 12), the vibration screen (1) so that the coarse aggregate supplied to the sorting network 13 can be moved to the coarse aggregate outlet by the vibration generator 18 and the shock absorber 19 to ride the sorting network (13). It may be desirable to install at an inclined angle.

The present invention is to further form a technical configuration for removing the fine powder on the vibration screen (1) as described above, the vibration screen (1) according to the present invention is spaced apart a suitable distance on the upper portion of the screening net (13) coarse aggregate Aggregate spread bar (3) formed in a triangular prism shape to unfold, and a plurality of air nozzles (41) for discharging the high-pressure air supplied from the outside air compressor to remove foreign matter attached to the coarse aggregate on one side The formed air injector (4) is formed, the coarse aggregate installed in the sorting net (13) is not unfolded when supplied when supplied by agglomerated curtain even if the high-pressure air is injected into the air nozzle (41) of the air injector (4) In order to solve the problem that the fine powder attached or contained in the coarse aggregate is not eliminated by the phenomenon, the aggregate spread bar 3 is formed to unfold the coarse aggregate supplied before passing through the air injector 4 to prevent the curtain phenomenon. It is good.

In addition, the aggregate spread bar (3) is fixed to the upper part of the vibration screen (1) as shown in Figure 7, and flexible to spread the coarse aggregate on one side of the fixing bar (31) By using the spreading plate 32 formed in the shape of a plate, the spreading portion 131 of the sorting net 13 formed at the bottom thereof passes through the spreading plate 32 in which the thick aggregate is flexible. Depending on the size of the coarse aggregate is to be spread out horizontally.

At this time, the aggregate spread bar (3) to adjust the throughput separately according to the size of the coarse aggregate by forming a plurality of height adjustment grooves 33 on both sides to adjust the height of the fixed bar 31 according to maintenance and situation To do that.

In addition, the circumference prevention plate 5 is formed inside the main body 11 to prevent the fine powder from flowing back to the sorting network 13 again by the high pressure air pressure discharged by the air injector 4 and at the same time the main body ( 11) It is composed of a negative pressure generating fan (7) connected to the differential feed pipe (6) and an air purifier (8) to collect the fine powder passed through it so as to seal the inside to maintain the negative pressure state.

At this time, the air purifier 8 may be used as long as the air purifier 8 to remove fine dust, such as a bag filter, cyclone, it is preferable to select the equipment according to the throughput of the aggregate and the concentration of dust.

In addition, the foreign matter removal pipe 16 to increase the height of the foreign matter removal pipe 16 to prevent the foreign matter except the fine powder of the air purifier (8) to pass through the negative pressure generating fan (7) to cause damage to the fan (7). It will be preferable to form the lower side than the differential suction opening (61).

As shown in Figure 5 and 6, the sorting net 13 forms an unfolding portion 131 of the form that is blocked without two or more sorting holes at a suitable distance and aggregate spreading bar (3) on the top Formed to form a coarse aggregate to effectively spread, the sorting net 13 is to use a sorting plate 13 formed with a mesh or a plurality of holes so that the earth or fine powder of 5 mm or less passes.

As mentioned above, the debris removal tube 16 has a diameter of the hole of the debris removal tube 16 as shown in FIG. 4 so as to prevent the generation of scattering dust to remove the earth and sand when removing fine powder or debris. By forming the discharge portion 162 smaller than the inlet 161 to generate a difference in pressure to remove foreign matters heavier than air, it is possible to prevent scattering dust.

In more detail, the foreign matter removal device for recycled coarse aggregate according to the present invention is a device for removing foreign matter from recycled coarse aggregate produced through an existing construction waste intermediate treatment facility, and is largely attached to recycled coarse aggregate. It can be divided into parts for removing foreign matters and parts for preventing secondary environmental pollution from being removed.

Accordingly, the technical configuration for removing the foreign matter is the air sprayer is installed with the aggregate spread bar (3) and the air nozzle 41 so that the high-pressure air generated by the air camper installed in the outside is directly sprayed to all recycled coarse aggregate (4) and a high-pressure air injected into the foreign matter removing tube 16 and the vibration screen 1, which constitutes a sorting net 13 of 5 mm and thereby prevents secondary contamination by the foreign matter removed. Negative pressure is generated through the circumference prevention plate (5) and the differential feed pipe (6) for transporting the air inside the vibrating screen (1) to prevent the eddy phenomenon that rides on the inside of the vibrating screen (1) again discharged to the outside The inside of the vibrating screen (1) is sealed to prevent secondary environmental pollution due to fine powder by the air purifier through the fan (7).

Here, in order to allow the high-pressure air generated through the external air cam compressor to be directly sprayed to the grain of every regeneration coarse aggregate, the aggregate to spread the aggregate to a single layer in the sorting net 13 The spreading portion 131 and the aggregate spreading bar (3) on the top of the vibrating screen (1) to install the coarse aggregate to spread flat, the air to inject high-pressure air so that the high-pressure air is directly injected The air injector 4 having the nozzle 41 is installed on one side of the aggregate spread bar 3, that is, just behind the traveling direction, to effectively remove the fine powder attached to the aggregate.

Then, in order to further improve the quality of the coarse aggregate, the screening net 13 size of the screen is formed to 5mm to remove all the fine powder and foreign matter less than 5mm.

In order to effectively remove the foreign matter separated in this way, in the case of fine powder, a eddy prevention plate 5 is installed so as not to be ejected back to the screening network 13 of the hermetic vibrating screen 1 by the high pressure air pressure. The negative pressure generating fan 7 is attached to the negative pressure generating fan 7 through the differential feed pipe 6 so as to continuously flow into the sealed vibrating screen 1 to effectively remove the fine powder, and the negative pressure generating fan 7 When the fine powder passing through) is discharged into the air, secondary pollution is generated so that an air purifier 8 such as a bag filter is installed to prevent the fine powder from being discharged into the air.

In addition, in the case of the foreign matter except the fine powder, if it passes through the negative pressure generating fan 7, there is a possibility of damaging the fan blade, so that the outlet of the foreign material removing tube 16 is the fine inlet 61 of the fine feed tube 6. By installing below), foreign matter other than fine powder is prevented from being supplied to the negative pressure generating fan (7), thereby preventing damage to the fan blades, thereby enabling long-term use.

As described above, the present invention has been described with reference to embodiments for effectively removing fine powder and foreign matter in order to improve the quality of the coarse aggregate, but is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention. Of course, it can be modified.

As apparent from the above description, according to the apparatus of the present invention, unlike the wet method using water, it removes fine particles and foreign substances that adversely affect the quality of the recycled coarse aggregate produced through the existing construction waste treatment facilities. Air injectors and sealed vibrating screens enable economically high-quality recycled coarse aggregates to be produced economically without secondary pollution or costly secondary treatment.

While the invention has been shown and described in connection with specific embodiments, it will be appreciated by those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention as indicated by the claims. It will be easy to see.

Claims (4)

Coarse aggregate discharge port 14 to form a sorting net 13 on the top of the main body 11 to produce a high-quality recycled coarse aggregate to increase the quality of the coarse aggregate attached or contained foreign matter, and to discharge coarse aggregate to one side thereof. Form the aggregate transport conveyor 15 for transporting and discharging the coarse aggregate to the bottom, and forming a foreign material removal tube 16 to remove the foreign matter dropped by the screening net 13 at the bottom of the main body (11) And a foreign matter conveyance conveyor 17 for transporting and discharging foreign substances at the lower end thereof, and forming a vibration generator 18 composed of a cam and a motor on one side of the main body 11, and generating vibrations by the vibration generator 18. In the vibrating screen 1 inclined at an appropriate angle to one side so that the shock absorber 19 is installed on the pedestal 12 on both sides of the main body 11, The vibrating screen (1) is formed at the upper portion of the sultry net 13 to form an aggregate spread bar (3) to expand the coarse aggregate at an appropriate distance, and supplied from the outside to remove the foreign matter attached to the coarse aggregate to one side The air injector 4 is formed with a plurality of air nozzles 41 for discharging the high pressure air, and fine powder is not flowed back to the sorting network 13 by the high pressure air pressure discharged by the air injector 4. The negative pressure generating fan (7) connected to the differential feed pipe (6) for installing the eddy prevention plate (5) inside the vibrating screen (1) and maintaining the negative pressure at the same time, and the air collecting the fine powder passing therethrough A purifier 8; In order to prevent foreign matter except the fine powder of the air purifier 8 from passing through the negative pressure generating fan 7 to cause damage to the fan, the fine particle suction opening of the fine powder conveying pipe 6 may be adjusted. 61) coarse aggregate fine removal equipment, characterized in that formed below the 61. The method according to claim 1 The sorting net 13 is formed in the lower portion of the aggregate spread bar (3) of the unfolding portion 131 of the form that is blocked without two or more sorting holes at a suitable distance so that the thick aggregate can be effectively spread out Regeneration Coarse Aggregate Powder Removal Device The method according to claim 1 The foreign material removal tube 16 is a regeneration coarse aggregate removal device, characterized in that the diameter of the hole is formed in the outlet 162 smaller than the suction port 161 to generate a difference in pressure to remove foreign substances heavier than air. The method according to claim 1 The aggregate spread bar (3) is fixed with the fixing bar 31 fixed to the upper portion of the vibrating screen, spread plate 32 formed in a flexible plate-like shape to expand the coarse aggregate on one side of the fixing bar (31) Regeneration coarse aggregate fine removal device, characterized in that formed a plurality of height adjustment grooves 33 on both sides so that the height can be adjusted according to the maintenance and situation.

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