KR100674009B1 - Apparatus and method for manufacturing recycled-aggregate made of crushed waste-concrete - Google Patents

Abstract

A device and a method for producing recycled aggregates from the crushed construction waste material during a construction waste material mid-treatment process are provided to clearly remove foreign materials from the surface of the recycled aggregate by applying impact to the aggregate by vibration, repeatedly spraying steam on all surfaces of the aggregate, and then operating a brush. The device for producing recycled aggregates(A,A1,A2,A3,A4) from the crushed construction waste material during a construction waste material mid-treatment process is composed of first and second vibration screens(20,40) having plural first and second sorting holes and transferring the recycled aggregates with applying vibration to the recycled aggregates by an eccentric motor; a perforated oblique plate(30) obliquely installed between the first and second vibration screens to transfer the recycled aggregate supplied from the first vibration screen with rotating the recycled aggregate; first, second, and third steam spraying units(50,60,70) installed at the upper parts of the first and second vibration screens and the oblique plate to remove foreign materials stuck on the surface of the recycled aggregate transferred by the first and second vibration screens and the oblique plate by jetting the high temperature and high pressure steam; a transfer screw disposed at the bottom sides of the first and second vibration screens and the oblique plate to deliver the foreign materials discharged through the sorting holes of the oblique plate and the first and second vibration screens; and aggregate/screen cleaning brushes(22,42,23,43) installed at the upper and bottom sides of the first and second vibration screens to brush off the surface of the aggregate transferred along the first and second vibration screens or to remove the foreign materials by scraping each bottom side of the first and second vibration screens.

Description

Apparatus and method for producing recycled aggregates from crushed construction waste during intermediate treatment of construction waste {APPARATUS AND METHOD FOR MANUFACTURING RECYCLED-AGGREGATE MADE OF CRUSHED WASTE-CONCRETE}

1 is a block diagram of a device for producing circulating aggregate from the crushed construction waste intermediate treatment process according to the present invention.

Figure 2 is an enlarged view of the injection means applied to the apparatus for producing circulating aggregates from crushed construction waste during the construction waste intermediate treatment process according to the present invention.

Figure 3 is a block diagram of the inclination plate applied to the apparatus for producing recycled aggregates from the crushed construction waste during the construction waste intermediate treatment process according to the present invention.

Figure 4 is a block diagram of a transfer screw applied to the apparatus for producing circulating aggregate from the crushed construction waste during the intermediate process of construction waste according to the present invention.

5 is an installation state of the aggregate cleaning brush and the screen cleaning brush applied to the apparatus for producing circulating aggregates from the crushed construction waste during the intermediate construction process of the construction waste according to the present invention.

6 is a process diagram of a method for producing recycled aggregates from crushed construction waste intermediate treatment process.

<Description of Symbols for Main Parts of Drawings>

10: feeding conveyor, 20,40: vibrating screen

30: inclined plate, 50, 60, 70: steam injection means

80: transfer screw, 90: coating agent spraying means

The present invention relates to an apparatus and method for producing circulating aggregate, and more particularly, to remove foreign substances such as paste, soil, etc. adhered to the surface of construction waste such as waste concrete, and to treat the surface to obtain high quality circulating aggregate. The present invention relates to an apparatus and a method for producing recycled aggregate from crushed construction waste.

Various recycled aggregates are emitted due to deterioration of buildings, but the designated by-products of construction wastes are managed according to the Law on the Promotion of Saving and Recycling of Resources in the process of destruction of natural environment due to lack of landfill and illegal dumping. Mandatory recycling.

As a result, many companies are producing recycled aggregates, but due to lack of technology and awareness, mandatory recycling of recycled aggregates has become obsolete.Each construction company avoids low-grade recycled aggregates, and recycled aggregates are restricted to cover and fill soils. It is a situation that causes a huge waste of resources.

In particular, the surface of the waste concrete adheres to foreign materials such as cement paste (hereinafter referred to as paste) and soil powder. The paste and coating material must be removed when the aggregate is recycled because it lowers the quality of the recycled aggregate. Since the conventional recycled aggregate regeneration technology usually depends on the crushing technique to adjust the size, the paste and the soil are on the surface of the recycled aggregate. to be. As such, aggregates with pastes and soils are not used as aggregates for ready-mixed concrete, but can only be used for simple reclamation or subsidiary soil layers.

In order to solve such disadvantages, techniques for removing paste using chemicals and techniques for screening soil powder have been proposed, but the cost of using chemicals is continuously generated, resulting in increased burden and pollution of the environment. There are drawbacks to this.

In addition, even if the foreign substances are removed from the surface of the circulating aggregate by chemicals, this is only to remove the foreign substance, so many angles on the surface of the circulating aggregate do not produce high-grade circulating aggregate.

The present invention is to solve the above-mentioned conventional problems, and to remove foreign substances, such as paste, earth powder, etc. adhered to the surface of construction waste such as waste concrete, without using chemicals and water, the quality of the recycled aggregate produced To provide a device and method for producing recycled aggregates from crushed construction waste during the intermediate treatment process to remove foreign substances and soil during the intermediate treatment process to produce recycled aggregate from crushed construction waste to improve the There is this.

Apparatus for producing circulating aggregates from crushed construction waste according to the present invention provided to achieve the above object, a plurality of times of high temperature and high pressure steam while conveying or rotating by rotating the circulating aggregates subjected to the crushing process Steam injection means for repeatedly spraying to remove the foreign matter on the surface of the circulation aggregate; It characterized in that it comprises a spray means for applying a coating on the circulation aggregate from which the foreign matter on the surface through the steam spray means.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in Figure 1, the apparatus for producing circulating aggregate from the crushed construction waste during the construction waste intermediate treatment process according to the present invention, the circulating aggregate (A) crushed from the construction waste (the foreign matter (W) on the surface ( Cement paste, soil, dust, etc.) and the first vibration screen 20 for receiving and conveying the feed through the feeding conveyor 10, and is disposed inclined at the exit end of the first vibration screen 20, the circulation aggregate (A ) (First state of the foreign matter (W) is removed by the first steam spraying means 50 to be described later) and the first inclined plate 30 to be transported while rolling, and the first inclined plate 30 falling A second vibration screen 40 for transporting the aggregate A1 (a state in which the foreign matter W is secondarily removed by the second steam spraying means 60 described later), and first and second vibration screens 20 and 40; ) And the circulation aggregate (A) which is mounted on the first inclination plate 30 and is transported along the first and second vibration screens 20 and 40 and the first inclination plate 30 (after). First, second and third steam spraying means (50, 60, 70) for injecting steam of high temperature and high pressure to the state in which foreign matters (W) are first removed by the third steam spraying means (70); The coating agent on the surface of the circulating aggregate (A) passing through the second screw (20, 40) and the transfer screw 80 for collecting and transporting the foreign matter (W) falling from the inclined plate 30 and the second vibrating screen (40) It is configured to include a coating means for spraying a spray 90, and below, each component will be described in detail.

The first and second vibration screens 20 and 40 each have a plate shape having a plurality of first and second selection holes (not shown). The first and second vibration screens 20 and 40 are vibrated by the eccentric motors 21 and 41 to shake off the circulating aggregate and apply a physical impact. The foreign matter on the surface of the circulating aggregate is better removed, and the foreign matter (W) removed from the circulating aggregate (A, A1) is discharged downward through the sorting hole. The first and second vibration screens 20 and 40 may be vibration screen belts that are not limited to the plate-shaped structure and rotate in an infinite track.

The inclined plate 30 is a plate shape having a plurality of third selection holes, not shown, and is disposed between the first and second vibration screens 20 and 40 and is supplied from the first vibration screen 20 to the circulation aggregate A1. While discharging the foreign matter (W) removed from the circulating aggregate (A1) through the third sorting hole to the lower portion of the circulating aggregate (A1) while transferring to the second vibration screen (70) of the bottom by its inclination By inducing rotation is characterized in that the steam is sprayed on all surfaces of the circulation aggregate (A1). Here, the inclined plate 30 is configured to vary the inclination according to the particle size, weight, etc. of the circulation aggregate (A). For example, as shown in FIG. 3, one side (the second vibration screen 40 side) of the inclined plate 30 is fixed through the fixed support 31, and the other side (the first vibration screen 20 side) is The angle adjustable strut 32 is formed to be angle adjustable. The angle adjustment strut 32 is selectively coupled to the angle adjusting hole 33a while being inserted to be pulled out of the first holding 33 and the first holding 33 provided with the angle adjusting holes 33a of the multi-stage. It consists of a second support 34 to adjust the angle of (30).

As shown in Figure 1 and 2, the first to third steam injection means (50, 60, 70) is to inject steam at a high pressure (where the injection pressure is not limited to a numerical value) by the heat of the steam and chemical The foreign matter (W) adhered to the surface of the circulating aggregate (A, A1, A2) by physical force to fall from the circulating aggregate (A), the steam generating means, the injection for injecting steam generated by the steam generating means It comprises a nozzle (51, 61, 71). At this time, the first to third steam spraying means (50, 60, 70) may be supplied with steam from one steam generating means (52).

1, 2 and 4, the foreign matter conveying screw 80 is mounted over the lower portion of the first vibration screen 20, the inclined plate 30 and the second vibration screen 40, the duct 81 The first vibrating screen 20, the inclined plate 30 and the second vibrating screen 40 of the first, second, and three screening holes in closed communication is discharged from the first, 2, 3 screening holes Transfer foreign matter (W) to one side.

Further, aggregate cleaning brushes 22 and 42 and screen cleaning brushes 23 and 43 are further provided to remove foreign matters on the aggregate surface and foreign matters on the surfaces of the first and second vibration screens 20 and 40. . Aggregate cleaning brushes 22 and 42 and screen cleaning brushes 23 and 43 have the same structure in which cleaning brushes are formed at the periphery of the rotating drum, and are driven through driving means, respectively.

That is, when foreign matter is removed from the aggregate (A) surface when the aggregate is removed from the aggregate (A) surface by the high-pressure steam during the transfer of the first and second vibration screen (20,40), the aggregate may not be removed The cleaning brushes 22 and 42 scrape the surface of the aggregate A to remove foreign substances on the surface of the aggregate A. The screen cleaning brushes 23 and 43 are the first to be empty by dropping the aggregate to the next process. The surface of the first and second vibration screens 20 and 40 is scratched at the bottom of the second vibration screens 20 and 40 to remove the blockage of the selective holes of the first and second vibration screens 20 and 40.

Since the driving means has the same structure regardless of the aggregate washing brushes 22 and 42 and the screen washing brushes 23 and 43, the detailed configuration will be described by taking only the aggregate washing brush 22 installed on the first vibration screen 20 as an example. do. As shown in FIG. 5, the driving means for the aggregate cleaning brush 22 includes a power transmission means such as a belt 24 connected with the aggregate cleaning brush 22 and a rotational force to the aggregate cleaning brush 22 through the power transmission means. It consists of a drive motor 25 for transmitting. In addition, the gap of the aggregate cleaning brush 22 may be different according to the size of the aggregate, and the cleaning brush may be worn, so that the gap adjusting means for adjusting the gap of the aggregate cleaning brush 22 may be further included. The gap adjusting means, for example, the aggregate washing brush 22 and the driving motor 25 is fixed to each other, the gap adjustment bracket 27, the gap adjustment fixing bracket 27 is hinged to the frame not shown in the middle 27 Piston (28a) is connected to one side (preferably the drive motor 25 side) of the) is composed of a gap adjusting cylinder 28 for adjusting the gap of the aggregate washing brush 22 by rotating the gap adjusting fixing bracket (27) do. That is, when the piston 28a of the gap adjusting cylinder 28 is drawn out or inserted, the gap adjusting bracket 27 rotates around the hinge 26 so that the aggregate washing brush 22 is far from the first vibration screen 20. As you lose or get closer, the gap is controlled.

Coating spraying means 90 is a spray guide conveyor for receiving and transporting the circulation aggregate (A3) (third removal of the foreign matter (W) through the third steam spraying means 70) from the second vibration screen (40) (91) Spraying the coating on the surface of the circulating aggregate (A3) is installed on the top conveyed along the spray guide conveyor (91), the coating agent is a wear-resistant water-repellent coating of ultra-fine nanomaterials (as previously known products Products used for antibacterial, deodorant, and cement detoxification are used, and do not present specific ingredients.The coating tank, the pump pumping the coating material stored in the coating tank, spray the coating by pumping the pump. It consists of a spray nozzle 92 for spraying on the circulating aggregate (A3) conveyed along the conveyor (91).

Spray guide conveyor 91 is made of a mesh structure so that the coating agent that is not applied to the circulation aggregate (A3) is drained.

Then, the circulation aggregate (A3) so that the coating agent can be applied to all surfaces of the circulation aggregate (A3)

The circulation aggregate A4 (finished product) to which the coating agent is applied through the coating agent spraying means 90 is transferred to a yard or a loading box through the product conveyor 93.

In the drawing, reference numeral 94 is provided between the second vibration screen 40 and the spray guide conveyor 91 to supply the circulating aggregate A3 passed through the second vibration screen 40 to the spray guide conveyor 91. It is a guide suit.

With reference to Figure 6 will be described a method for producing recycled aggregate from crushed construction waste according to the present invention.

(S10) Circulating aggregate (A) feeding. When the recycled aggregate (A), which has been subjected to pretreatment (crushing process, crushed iron sorting process, combustible foreign matter sorting process through crusher and crusher, etc.) is put into the feeding conveyor 10 by using equipment such as fork crane, circulating aggregate (A ) Is supplied to the first vibration screen 20 through the feeding conveyor (10).

(S20) Remove the first foreign matter. The circulating aggregate A supplied to the first vibration screen 20 is transported while being shaken by the first vibration screen 20, and in the process of the injection nozzle 51 of the first steam spraying means 50, the circulating aggregate ( Steam is injected to the surface of A). The foreign matter adhering to the surface of the circulating aggregate (A) is removed from the surface of the circulating aggregate (A) by the chemical / physical action by the heat and pressure of the steam to be removed or disappeared. The foreign matter (W) removed from the surface of the circulating aggregate (A) is discharged to the lower through the first screening hole of the first vibration screen 20, and is introduced into the transfer screw 80 under the guidance of the duct 81. . Then, the circulating aggregate A passes through the aggregate washing brush 22 while being moved along the first vibration screen 20. In this process, the aggregate washing brush 22 scratches the surface of the circulating aggregate A. Take out the foreign substances on the surface of the circulating aggregate (A). In addition, the screen cleaning brush 23 disposed at the bottom of the first vibrating screen 20 scratches the bottom surface of the first vibrating screen 20 to scrape foreign substances introduced into the sorting hole, thereby preventing clogging of the sorting hole.

(S30) Remove the second foreign matter. Circulating aggregate A1 in which foreign matter is first removed while passing through the first vibrating screen 20 is freely dropped onto the inclined plate 30 to be transferred to the second vibrating screen 40 by inclining the inclined plate 30. While the aggregate A1 is transported along the inclination of the inclined plate 30, steam is injected from the second steam spray nozzle 61, and the foreign matter W adhering to the surface of the circulating aggregate A1 is chemical / It is removed by physical action. The foreign matter W removed from the circulating aggregate A1 is discharged into the lower duct 81 through the second selection hole of the inclined plate 30 and is introduced into the transfer screw 80. The inclination plate 30 is set at an angle according to the particle size of the recycled aggregate before starting the production of recycled aggregate.

(S40) Remove the third foreign matter. Circulating aggregate A2 (the second foreign matter removed by the second steam spraying means 60) freely falling from the inclined plate 30 is transported while shaking by the second vibration screen 40, and during the process In the injection nozzle 71 of the three steam injection means 70, steam is injected to the surface of the circulation aggregate A2. The foreign matter (W) adhered to the surface of the circulating aggregate (A2) is removed from the surface of the circulating aggregate (A2) by the chemical / physical action by the heat and pressure of the steam to be removed or disappeared. The foreign substance W removed from the surface of the circulating aggregate A2 is discharged downward through the third selection hole of the second vibration screen 40 and is introduced into the transfer screw 80 under the guidance of the duct 81. .

Then, while the circulating aggregate A2 is moved along the second vibration screen 20, the circulating aggregate A2 passes through the aggregate washing brush 42. In this process, the aggregate washing brush 42 scratches the surface of the circulating aggregate A. Take out the foreign substances on the surface of the circulating aggregate (A). In addition, the screen cleaning brush 43 disposed at the bottom of the second vibration screen 40 scratches the bottom surface of the second vibration screen 40 to scrape foreign substances introduced into the selection hole, thereby preventing clogging of the selection hole.

The foreign matter (W) attached to the surface of the circulating aggregate is removed through the processes of (S20) to (S40), and the circulating aggregate (A3) discharged from the discharge end of the second vibration screen 40 is the foreign matter (W) on the surface. This is a high quality circular aggregate without. Then, the foreign matter (W) collected in the transfer screw 80 by the guide of the duct 81 is transported to a predetermined place by the rotational force of the transfer screw 80 is loaded.

(S50) coating spray. Circulating aggregate A3 from which foreign matters W have been removed by steam over three times is supplied to the spray guide conveyor 91 having a mesh structure via the guide chute 93, and is transported along the spray guide conveyor 91. The coating agent is sprayed on the surface of the circulating aggregate A3 by the coating spraying means 90. Therefore, the coating film by the coating agent is formed on the surface of the circulating aggregate A3.

(S60) Product loading. Circulating aggregate (A4) coated with the coating agent is transported and loaded in a yard or a loading box along the product conveyor (93).

Through this process, circulating aggregates are crushed during the construction waste intermediate treatment process, and the aggregate cleaning brushes (22, 42) and the screen cleaning brushes (23, 43) Adjust the gap.

As described above, according to the apparatus and method for producing circulating aggregates from the crushed construction wastes during the intermediate treatment process of construction wastes according to the present invention, by applying a shock to the circulating aggregates by vibration and high temperature and high pressure on all surfaces of the circulating aggregates By repeatedly spraying steam several times and using a brush to remove foreign substances from the surface of the recycled aggregate cleanly, it is possible to produce high-quality recycled aggregate, and separate water by using high temperature and high pressure steam without using most of the water used for the production of existing recycled aggregate. We can focus on reducing the cost of water purification following treatment and preventing secondary environmental pollution caused by water use.

And, by applying a coating on the surface of the circulating aggregate from which foreign substances have been removed, it is possible to improve the shape and durability of the circulating aggregate.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (5)

An apparatus for producing circulating aggregate from crushed construction waste having steam spraying means for injecting high temperature and high pressure steam to the surface of the circulating aggregate during transfer of crushed circulating aggregate, First and second vibration screens each having a plurality of first and second selection holes and transferring the vibration aggregate to the circulation aggregate by an eccentric motor; An inclined plate disposed between the first and second vibrating screens to be inclined to convey and guide rotation of the circulation aggregate supplied from the first vibrating screens; First, second, and third respectively installed on top of the first and second vibration screens and the inclined plate to inject high-temperature, high pressure steam to remove foreign substances adhering to the surface of the circulation aggregate transported through the first and second vibration screens and the inclined plate. Steam injection means; Foreign material conveying means disposed at the bottom of the first and second vibration screens and the inclined plate to transfer foreign substances discharged through the selection holes of the first and second vibration screens and the inclined plate; The upper and lower parts of the first and second vibration screens are rotatably installed through a driving motor, respectively, to wash the aggregate surface transported through the first and second vibration screens or to scrape the bottom of the first and second vibration screens. An aggregate wash / screen wash brush to remove; Apparatus for producing circulating aggregate from the crushed construction waste during the construction waste intermediate treatment process, characterized in that it comprises a product conveyor for transporting the circulating aggregate sprayed by the coating agent via the coating spray means. According to claim 1, wherein the aggregate cleaning / screen cleaning brush and the driving motor is fixed to each other, the middle of the gap adjusting bracket hinged to the frame, the piston is connected to one side of the gap adjusting fixing bracket to the gap adjusting fixing bracket Construction waste, which is crushed during the construction waste intermediate treatment process, further comprising a gap adjusting means comprising a gap adjusting cylinder for adjusting the gap of the aggregate washing / screen washing brush with respect to the first and second vibration screens by rotating. Apparatus for producing recycled aggregate from According to claim 1 or 2, wherein the crushed during the construction waste intermediate treatment process characterized in that it further comprises a coating spraying means for receiving the circulating aggregate from the second vibration screen and spraying the coating on the surface of the circulating aggregate A device for producing recycled aggregates from construction waste. In the method for producing circulating aggregates from crushed construction waste comprising the step of removing the foreign matter adhering to the surface of the circulating aggregate by injecting steam of high temperature and high pressure to the crushed circulating aggregate, The foreign material removal step, While the pulverized circulating aggregate is transported by a conveying means, the steam is sprayed while being transported to remove the foreign matter adhering to the circulating aggregate surface by heat and impact energy so as to fall to the bottom, and the circulating aggregate surface and the First foreign matter removing step of removing foreign matter by scraping the surface of the transfer means of the circulation aggregate, The secondary aggregates removing step of removing the foreign substances on the surface of the circulating aggregates by injecting the recycled aggregates passed through the primary foreign matter removal step to rotate and transport along the inclination and spraying the high temperature and high pressure steam and The high temperature and high pressure steam is sprayed while transferring the circulating aggregate passing through the secondary foreign matter removing step to remove foreign substances on the surface of the circulating aggregate to drop it to the lower side, and the transfer means of the circulating aggregate surface and the circulating aggregate. Method of producing circulating aggregates from the crushed construction waste during the intermediate process of construction waste, characterized in that the third step of removing foreign matter by scraping the surface of the foreign matter. 5. The method of claim 4, further comprising the step of applying a coating agent to the surface of the recycled aggregate passed through the third foreign matter removal step to produce the recycled aggregate from the crushed construction waste during the construction waste intermediate treatment process Way.

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