KR102674392B1 - Apparatus and Method for Producing Recycled Aggregates using Rotating Sorting Device - Google Patents

Abstract

The present invention removes lightweight foreign materials such as wood, vinyl, Styrofoam, and other waste from construction waste generated at demolition sites of civil engineering structures or building structures, and produces recycled aggregate that can be usefully recycled as a resource, using closed containers. It is made up of shaped members to transport dried construction waste by rotation. During the transfer process, an upward air current using a spiral blowing structure is formed inside, allowing lightweight foreign materials to be suspended by the upward air current to efficiently separate lightweight foreign materials from recycled aggregate. It relates to the “lightweight foreign matter screening and separation device from construction waste” and the “circulated aggregate production device and production method” using the same.

Description

Apparatus and Method for Producing Recycled Aggregates using Rotating Sorting Device}

The present invention removes lightweight foreign materials such as wood, vinyl, Styrofoam, and other waste from construction waste generated at demolition sites of civil engineering structures or building structures, and produces recycled aggregate that can be usefully recycled as a resource, using closed containers. It is provided with a main body that is made up of shaped members and transports dried construction waste by rotation. During the transport process, an upward air current using a spiral blowing structure is formed inside the main body, so that lightweight foreign substances are suspended or levitated by the rising air current, thereby removing the recycled aggregate. This is about a “lightweight foreign matter screening and separation device from construction waste” that can efficiently separate lightweight foreign materials.

In addition, the present invention dries moisture-containing construction waste by hot air drying to weaken the bond between lightweight foreign materials and recycled aggregate, and separates and discharges lightweight foreign materials by suspending or levitating them from recycled aggregate through the lightweight foreign material sorting and separation device. It has a structure that safely collects flying products such as dust generated in the process of separating and discharging foreign substances by sucking them in with cyclonic suction, effectively separating lightweight foreign materials from construction waste and safely collecting the separated lightweight foreign materials and flying products. This relates to a “circulated aggregate production device and recycled aggregate production method from construction waste using a lightweight material sorting and separation device” that can be discharged by using a lightweight material sorting and separation device.

Various technologies have been proposed to produce recycled aggregates from construction wastes that can be recycled as resources. One example is the technology disclosed in Republic of Korea Patent No. 10-1294091.

What is important in producing recycled aggregate from construction waste is to efficiently separate and remove lightweight foreign materials such as wood, vinyl, Styrofoam, and other waste. Republic of Korea Patent Nos. 10-2143492 and 10-2165168, etc. present a technology for effectively removing lightweight foreign substances from a trommel.

When producing recycled aggregate from construction waste, it is very important to not only effectively separate and remove lightweight foreign materials, but also safely collect and remove flying products such as dust and fine foreign materials to prevent environmental pollution.

Republic of Korea Patent Publication No. 10-1294091 (announced on August 8, 2013). Republic of Korea Patent Publication No. 10-2143492 (announced on August 12, 2020). Republic of Korea Patent Publication No. 10-2165168 (announced on October 13, 2020).

The present invention provides a technology for producing excellent quality recycled aggregate by efficiently separating and removing lightweight foreign substances such as wood, vinyl, Styrofoam, and other waste in producing recycled aggregate that can be recycled as a resource from construction waste. The purpose is to

Additionally, the purpose of the present invention is to provide a technology that can prevent pollution of the surrounding environment by safely and effectively collecting dust and fine foreign substances generated in the process of producing recycled aggregate from construction waste.

In order to achieve the above problem, the present invention includes a main body formed in a cylindrical shape having an internal space; and a blower that forms a spiral upward airflow that flows in a spiral shape going forward in the internal space of the main body and a main airflow that flows in the direction in which the main body extends; When construction waste mixed with lightweight foreign matter and recycled aggregate is input into the internal space of the main body, the lightweight foreign matter contained in the construction waste is suspended by the spiral upward air current and circumferential air current and flies forward from the internal space of the main body and is discharged from the main body. A lightweight foreign matter separation device is provided, wherein the recycled aggregate that does not float and remains is transported to the front of the main body and discharged from the main body, so that the lightweight foreign matter and the recycled aggregate contained in the construction waste are sorted and separated and discharged.

In addition, in the present invention, by applying hot air to construction waste mixed with recycled aggregate and lightweight foreign matter to dry the construction waste, the moisture content of the recycled aggregate and lightweight foreign matter is reduced and the bonding force between the recycled aggregate or the bonding force between the recycled aggregate and lightweight foreign material is improved. Reducing hot air drying device; Lightweight foreign matter screening and separation device according to the present invention described above; Lightweight foreign matter collection device for collecting lightweight foreign materials that are separated and discharged; A recycled aggregate production device is provided, characterized in that it has a configuration in which a cyclonic fly-by-product collection device is sequentially arranged to collect fly-by-products generated in the process of discharging and collecting lightweight foreign substances by sucking air in a cyclonic manner.

In addition, in the present invention, hot air is applied to the input construction waste using a hot air drying device to reduce the moisture content of the recycled aggregate and lightweight foreign substances that make up the construction waste, and to reduce the bonding force between the recycled aggregate or the bonding force between the recycled aggregate and lightweight foreign materials. ordering step; Using the lightweight foreign matter sorting and separation device according to the present invention, the construction waste that has been dried and then inputted is transported. During the transfer process, a spiral upward airflow and a circumferential air flow are formed in the internal space of the lightweight foreign material sorting and separating device by blowing, thereby making the light weight. Separating and discharging recycled aggregate and lightweight foreign matter by blowing away the foreign matter; Collecting lightweight foreign materials that are separated and discharged from the lightweight foreign material sorting and separation device using a lightweight foreign material collection device and simultaneously collecting recycled aggregates that are separated and discharged from the lightweight foreign material sorting and separating device; and a step of collecting flying products such as dust or fine foreign materials generated during the discharge and collection of lightweight foreign materials using a cyclone flying product collection device that sucks air in a cyclone method. Production methods are provided.

In the lightweight foreign matter sorting and separation device, recycled aggregate production device and recycled aggregate production method according to the present invention as described above, an inlet through which construction waste flows is formed at the rear of the main body of the light foreign material sorting and separation device, and at the front within the main body. The foreign matter outlet through which lightweight foreign matter separated and suspended from the recycled aggregate by upward and circumferential air currents is discharged and the aggregate outlet through which the circulated aggregate is discharged are formed on the upper front surface of the main body and the lower front surface of the main body, respectively; The blower has a main direction blowing nozzle that forms a main direction airflow in which the wind flows straight in the main direction, and sends wind along the inner surface of the main body so that the wind flows forward in a spiral shape in the internal space of the main body. It is configured to include a spiral blowing nozzle that forms a spiral upward airflow and is located at the rear of the main body; The body is tilted lower toward the front and rotates around a cylindrical axis; On the inner surface of the main body, a plate-shaped inner wing member extending in the main direction is provided so as to be perpendicular to the inner surface of the main body and protrude toward the center of the main cross-section of the main body. A plurality of pieces are provided at intervals along the line; As the main body rotates, the construction waste contained in the inner space of the main body is pulled up toward the apex in the main cross section of the main body by the inner wing member, and as it approaches the apex, it naturally falls from the inner wing member, and the construction waste In the process of falling, lightweight foreign matter is separated from the recycled aggregate by the circumferential air current and spiral upward air current and flies to the forward foreign matter outlet while floating. The fallen recycled aggregate moves along the internal space of the main body and is discharged through the aggregate outlet. You can have

According to the present invention, it is possible to efficiently separate and remove lightweight foreign substances such as wood, vinyl, styrofoam, and other waste contained in construction waste, and thereby produce recycled aggregate of excellent quality. It is possible to safely and effectively collect dust and fine foreign matter generated during the process, thereby effectively preventing contamination of the surrounding environment and inconvenience to surrounding residents due to the operation of the recycled aggregate production equipment. .

In particular, the present invention uses a lightweight foreign matter sorting and separation device that can easily and efficiently float and separate lightweight foreign materials from recycled aggregate through a spiral upward airflow and circumferential airflow, thereby separating the recycled aggregate and lightweight foreign materials. Separation and discharge can be carried out more effectively, and the quality of the recycled aggregate produced can be further improved, and the cost required for the production of recycled aggregate can be further reduced, which has the advantage of greatly improving the economic feasibility of producing recycled aggregate. It works.

Figure 1 is a schematic diagram showing the overall configuration of the recycled aggregate production device according to the present invention.
Figure 2 is a schematic perspective view showing only the main body provided in the lightweight foreign matter sorting and separation device according to the present invention so that its internal space is visible.
FIG. 3 is a schematic front view of the main body of FIG. 2 viewed from the front in the main direction.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. The present invention has been described with reference to the embodiment shown in the drawings, but this is described as one embodiment, and the technical idea of the present invention and its core configuration and operation are not limited thereby.

Figure 1 shows a schematic diagram showing the overall configuration of the recycled aggregate production apparatus 100 according to the present invention. In Figure 1, for convenience, each device constituting the recycled aggregate production device 100 is shown in the form of a schematic cross-sectional view to express its internal state.

As illustrated in the drawing, the recycled aggregate production device 100 according to the present invention applies hot air to the input construction waste to reduce the moisture content of the recycled aggregate and lightweight foreign substances constituting the construction waste, and to reduce the bonding force or circulation between the recycled aggregate. A hot air drying device (1), which reduces the bonding force between aggregate and lightweight foreign substances, includes a sealed cylindrical member to transport construction waste by rotating the cylindrical member, and creates a spiral upward airflow inside by blowing during the transport process. A lightweight foreign matter sorting and separation device (2) that separates and discharges recycled aggregates and lightweight foreign materials by forming a circumferential airflow to blow and separate lightweight foreign materials, a lightweight foreign material collection device (3) for collecting lightweight foreign materials that fall after being separated and discharged, and The cyclone flying product collection device (4), which collects flying products such as dust and fine foreign materials generated during the discharge and collection process of lightweight foreign materials by sucking air in a cyclonic manner, is arranged sequentially in the order of recycled aggregate production. .

Meanwhile, the recycled aggregate production method according to the present invention produces recycled aggregate by selectively separating and removing lightweight foreign substances from construction waste using the recycled aggregate production apparatus 100 of the present invention described above. Specifically, the recycled aggregate production method according to the present invention applies hot air to the input construction waste using a hot air drying device (1) to reduce the moisture content of the recycled aggregate and lightweight foreign substances contained in the construction waste and to reduce the moisture content between the recycled aggregate. Reducing the bonding force or bonding force between recycled aggregate and lightweight foreign substances; Using the lightweight foreign matter sorting and separation device (2), which includes a sealed cylindrical member and rotates, the construction waste inputted after drying is transported, and the lightweight foreign materials are sorted and separated by blowing during the transfer process. A step of separating and discharging the recycled aggregate and lightweight foreign materials by forming a spiral upward airflow and circumferential airflow in the internal space of the device (2) to blow and separate lightweight foreign materials; Collecting lightweight foreign materials that are separated and discharged from the lightweight foreign material sorting and separation device (2) and falling using the lightweight foreign material collection device (3) and simultaneously collecting recycled aggregates that are separated and discharged from the lightweight foreign material sorting and separating device (2); and a step of collecting flying products such as dust or fine foreign materials generated during the discharge and collection of lightweight foreign materials using a cyclone flying product collection device (4) that sucks air in a cyclonic manner.

In this specification, the direction in which construction waste sequentially moves for the production of recycled aggregate is referred to as “forward” for convenience. In the following, each device constituting the recycled aggregate production device 100 according to the present invention will be described in detail.

(A) Hot air drying device (1)

The hot air drying device (1) applies hot air to the input construction waste to reduce the water content of recycled aggregate and lightweight foreign matter and reduces the bonding force between recycled aggregate or the bonding force between recycled aggregate and lightweight foreign material.

Specifically, the hot air drying device 1 is equipped with a hot air blower 10 that generates hot air. In addition, the hot air drying device (1) is equipped with a sealed transfer chamber (11) that has a sealed internal space and has an inlet at the rear through which construction waste is input and an outlet at the front through which dried construction waste is discharged. It is done. A screen member is provided in the inner space of the sealed transfer chamber 11. Therefore, the construction waste introduced into the sealed transfer chamber 11 through the inlet falls onto the screen member and is transferred forward toward the outlet in a spread state on the screen member. The high-temperature hot air generated by the hot air blower 10 is blown into the sealed transfer chamber. The construction waste that is applied to the interior of (11) and spread on the screen member is dried and transported by hot air. In this process, the moisture content of the recycled aggregate and lightweight foreign materials that make up the construction waste spread on the screen member is lowered, and the bonding force between the recycled aggregates or the bonding force between the recycled aggregate and lightweight foreign materials is greatly reduced.

If necessary, a configuration capable of applying vibration to the screen member may be further provided. In other words, the screen member can have a configuration that can be vibrated. Through this, the construction waste that has fallen through the inlet can be spread more evenly on the screen member, and the recycled aggregate and lightweight foreign matter can be better separated during the drying process by hot air.

Construction waste, which is dried and has a very low moisture content and a reduced binding force between recycled aggregates or between recycled aggregates and lightweight foreign substances, is discharged from the hot air drying device (1) through the discharge port. For easy transport of construction waste, it is preferable that the screen member is arranged slanted in a manner that lowers as it moves forward, and if necessary, the sealed transfer chamber 11 itself is disposed slanted so as to lower as it moves forward, as illustrated in the drawing. It is also desirable.

(B) Lightweight foreign matter screening and separation device (2)

The lightweight foreign matter sorting and separation device (2) is installed in front of the hot air drying device (1) and performs the function of sorting and separating lightweight foreign materials and recycled aggregates contained in construction waste and discharging them.

Specifically, the lightweight foreign matter sorting and separating device 2 includes a main body 20 that has a cylindrical shape with an internal space and rotates to move the contents contained in the internal space forward, and a spiral shape moving forward in the internal space of the main body 20. It includes a blower 21 that forms a spiral upward airflow flowing while twisting and a main direction airflow flowing in the extension direction of the main body 20.

The main body 20 is made of a cylindrical shape and has an internal space. An inlet through which construction waste flows is formed at the rear of the main body 20, and at the front it is circulated by a spiral upward air current blowing within the main body 20 and a circumferential air current. A foreign matter outlet 27 through which lightweight foreign matter separated from the aggregate and floating is discharged and an aggregate outlet 28 through which recycled aggregate is discharged are formed, respectively. The foreign matter outlet 27 is formed on the upper front surface of the main body 20, and the aggregate outlet 28 is formed on the lower front surface of the main body 20. In order for the recycled aggregate to be easily transported forward, the main body 20 is preferably disposed at an angle so as to be lowered toward the front as illustrated in the drawing. Here, “main direction” refers to the direction in which the cylindrical main body 20 extends.

The blower 21 is equipped with a blowing nozzle that blows wind into the main body 20, and this blowing nozzle is located at the rear of the main body 20. The blowing nozzle provided in the blower 21 includes a main direction blowing nozzle 22a that forms a main direction airflow in which the wind flows straight in the main direction, and a main direction blowing nozzle 22a that blows wind along the inner surface of the main body 20. It consists of a spiral blowing nozzle (22b) that forms a spiral upward airflow that is sent forward in a spiral shape to the internal space of the main body (20). In the drawing, one blowing pipe equipped with a circumferential blowing nozzle (22a) at the front end is connected to the blower (21), and this one blowing pipe is shown as having a configuration that branches off and leads to the spiral blowing nozzle (22b). , the present invention is not limited to this, and individual blowers may be provided for each of the circumferential blowing nozzle (22a) and the spiral blowing nozzle (22b).

Figure 2 shows a schematic perspective view showing only the main body 20 provided in the lightweight foreign matter separation device 2 so that its internal space is visible, and Figure 3 shows the main body 20 of Figure 2 facing forward in the circumferential direction. A schematic front view of the shape looking towards is shown. In FIG. 2, the spiral blue arrow S drawn inside the main body 20 represents a spiral upward airflow (S) that progresses forward in a spiral shape in the internal space of the main body 20 by blowing by the spiral blowing nozzle 22b. In FIG. 3, the red arrow M extending in the main direction indicates the main direction airflow (M) blown forward in a straight line by the main direction blowing nozzle (22a).

In the present invention, the main body 20 can easily transport the recycled aggregate contained in the internal space forward and further rotate around its cylindrical axis so that the recycled aggregate and lightweight foreign matter can move and separate from each other more efficiently. In FIG. 1, reference numeral 26 indicates a rotating wheel 26 provided on the outside of the main body 20 to rotate the main body 20. However, in the present invention, the configuration for rotating the main body 20 is not limited to installing the rotating wheel 26 on the outside of the main body 20, and various other configurations can be used.

In the embodiment shown in the drawing, on the inner surface of the main body 20, a plate-shaped inner wing member 24 extending in the circumferential direction is perpendicular to the inner surface of the main body 20 and is positioned at the center of the cross-section in the main direction of the main body 20. It is provided to protrude toward the inner wing member 24, and a plurality of such inner wing members 24 are provided at intervals along the circumference of the main body 20 in its circumferential cross section. Here, “cross-section in the main direction of the main body 20” means the cross-sectional shape when looking at the main body 2 in the main direction. The inner wing member 24 is preferably made of a net-shaped member to allow wind to pass through. This inner wing member 24 performs the function of rotating the construction waste contained in the internal space when the main body 20 rotates. As the main body 20 rotates, the construction waste contained in the inner space of the main body 20 is rotated. Construction waste is pulled up toward the apex in the circumferential cross section of the main body 20 by the inner wing member 24, and naturally falls from the inner wing member 24 as it approaches the apex. In the process of falling construction waste, as described later, lightweight foreign matter is easily separated from the recycled aggregate by the circumferential air current and spiral upward air current and flies forward while floating or floating.

Below, the process of separation and flotation/floating of these lightweight foreign substances is explained in more detail.

Construction waste discharged in a dried state from the hot air drying device (1) flows into the internal space of the main body (20) through the inlet of the main body (20). At this time, since a strong wind (circumferential airflow) blows in the circumferential direction by the blower 21 and the circumferential blowing nozzle 22a, construction waste primarily flows into the main body 20 through the inlet of the main body 20. ), in the process of flowing into the internal space of the recycled aggregate, lightweight foreign materials such as wood and Styrofoam, which have a relatively low density compared to the recycled aggregate, are blown in the main direction by the strong wind (circumferential air current) in the main direction.

Meanwhile, since the main body 20 rotates in a forward tilted state and has an inner wing member 24 on its inner surface, construction waste flowing into the internal space through the inlet is moved to the main body 20. As it rotates, it is dragged toward the apex of the cross section in the main direction of the main body 20 by the inner wing member 24 and falls near the apex. While conveying and falling in the apex direction by the inner wing member 24 is repeated. moves forward. That is, as shown in FIG. 3 when looking at the inside of the main body 20 in the main direction, construction waste is moved to the vertex of the main cross-section of the main body 20 by the inner wing member 24 as the main body 20 rotates. moves towards. The construction waste moved in this way slides and falls from the inner wing member 24 as it approaches the apex of the cross section in the main direction of the main body 20. This process proceeds repeatedly. In the process of falling construction waste, lightweight foreign substances are blown in the circumferential direction by the strong wind (circumferential airflow) blowing forward and in the circumferential direction by the circumferential blowing nozzle (22a), and the recycled aggregate is carried by its weight. As it falls, secondary separation occurs between lightweight foreign matter and recycled aggregate.

Above all, the present invention is provided with a spiral blowing nozzle (22b) as described above, and the wind blows along the inner surface of the main body 20 by this spiral blowing nozzle (22b), causing a spiral blowing in the inner space of the main body 20. A spiral upward airflow is formed that progresses forward. This spiral upward airflow separates lightweight foreign substances from the recycled aggregate and causes them to float. Looking at this in more detail, the wind blown by the spiral blowing nozzle 22b is twisted in a spiral shape along the inner surface of the main body 20 and proceeds in the main direction. This spiral wind exerts a lifting force on lightweight foreign objects. In other words, the wind blowing by the spiral blowing nozzle 22b becomes an upward airflow that lifts lightweight foreign substances. Therefore, lightweight foreign matter mixed in the recycled aggregate easily floats due to the rising air current. Since the rising air current moves forward while moving in a spiral shape, the floating or floating lightweight foreign matter flies toward the front in the main direction along with the rising air current. At this time, since the circumferential airflow is already blowing inside the main body 20 by the circumferential blowing nozzle 22a, suspended lightweight foreign substances are more easily blown in the circumferential direction by the influence of the circumferential airflow as well as the rising airflow. do. In other words, as the spiral blowing is performed by the spiral blowing nozzle 22b, an upward air current is created inside the main body 20, causing lightweight foreign substances to float, and the upward air current formed within the main body 20 and the circumferential air current move forward. It will fly to . Through this process, lightweight foreign matter can be separated from the recycled aggregate and discharged very effectively and easily.

As mentioned above, when the inner wing member 24 is made of a net-shaped member through which wind can pass, the wind blown by the spiral blowing nozzle 22b flows through the inner wing member 24. Through this, a spiral-shaped upward air current is formed along the inner surface of the main body 20, and the efficient separation of lightweight foreign substances as described above occurs smoothly.

The recycled aggregate from which the lightweight foreign matter has been separated and removed is transported forward by the rotation of the main body 20 and the forward tilt of the main body 20, and through the aggregate outlet 28 formed at the bottom of the front surface of the main body 20. It is discharged from the main body 20 through. The recycled aggregate discharged from the main body 20 may fall and be transferred to an appropriate transport and storage location by a transport device 29 such as a conveyor belt.

Meanwhile, lightweight foreign matter separated from the recycled aggregate and suspended by the spiral upward air current and circumferential air flow flies toward the front and is discharged from the main body 20 through the foreign matter outlet. The outflow pipe 23 may be connected to the foreign matter outlet as illustrated in the drawing, and as will be described later, the suction force generated by the cyclone flying product collection device 4 acts on the outflow pipe 3, so that the main body 20 Lightweight foreign matter floating in the internal space and flying forward is easily sucked into the outlet and outlet pipe 23 and discharged to the outside of the main body 20 in a state distinguished from the recycled aggregate.

(C) Lightweight foreign matter collection device (3)

The lightweight foreign material collection device 3 is located in front of the lightweight foreign material sorting and separation device 2 and is a device for collecting falling lightweight foreign materials separated and discharged through the foreign material outlet of the main body 20. Since the lightweight foreign matter collection device 3 has a relatively wide internal falling space, the lightweight foreign matter separated and discharged through the foreign material outlet of the main body 20 reaches the internal falling space of the lightweight foreign material collection device 3, and the floating speed decreases. and falls accordingly.

The lightweight foreign matter collection device 3 is connected to a suction pipe 40 leading to the cyclone flying product collection device 4, which will be described later. Therefore, flying products such as dust and fine lightweight foreign materials that may still exist in a floating state without falling even in the internal falling space of the lightweight foreign matter collection device (3) are affected by the suction force acting from the cyclone flying product collection device (4), as described later. It is sucked into the suction pipe 40 and discharged.

(D) Cyclone flying waste collection device (4)

The cyclone flying product collection device (4) is a device that creates a cyclone-shaped air flow, and the flying products such as dust and fine lightweight foreign materials present in the lightweight foreign matter collection device (3) are collected through the suction pipe (40) by suction force. It is sucked into the product collection device (4). The flying products sucked into the cyclone flying product collection device (4) fall due to the cyclone phenomenon and are collected and discarded. At this time, the air sucked into the cyclone flying product collection device (4) can be sent back to the blower (21) of the lightweight foreign matter separation device (2) through the circulation pipe (43) and used for blowing. It is desirable to further install a filter (44) in the cyclone flying product collection device (4) to collect and remove flying products such as fine particles contained in the air, and then circulate the air through the blower (21) through the circulation pipe (43). do. Using this air circulation structure, it is possible to generate suction force to create a cyclone-shaped air flow with just one blower (21). When using the air circulation configuration using the circulation pipe 43 as described above, not only does a single blower 21 create blowing into the internal space of the main body 20, but also the cyclone flying product collection device 4 It can create suction force for cyclone-shaped airflow. Therefore, it is possible to omit a separate device for forming a cyclone-shaped air flow in the cyclone flying product collection device 4, thereby simplifying the overall device and reducing device manufacturing costs.

According to the lightweight foreign matter screening and separation device of the present invention having the configuration described above, the recycled aggregate production device 100 using the same, and the recycled aggregate production method, light foreign materials such as wood, vinyl, Styrofoam, and other waste contained in construction waste are removed. It can be efficiently separated and removed, thereby producing excellent quality recycled aggregate, which is very effective in terms of resource recycling.

In particular, according to the lightweight foreign matter screening and separation device, the recycled aggregate production device 100 using the same, and the recycled aggregate production method of the present invention, it is possible to safely and effectively collect dust, fine foreign substances, etc. generated in the process of producing recycled aggregate from construction waste. Accordingly, it is possible to efficiently prevent contamination of the surrounding environment and inconvenience to surrounding residents due to the operation of the recycled aggregate production device 100.

Above all, in the recycled aggregate production device 100 and the recycled aggregate production method of the present invention, a lightweight foreign matter screening device that can easily and efficiently float and separate lightweight foreign materials from the recycled aggregate through a spiral upward airflow and circumferential airflow. (2) is used, and through this, the separation and discharge of recycled aggregate and lightweight foreign matter can be carried out more effectively, and the quality of the produced recycled aggregate can be further improved, and the cost of producing recycled aggregate can be reduced. This has the advantage of greatly improving the economic feasibility of producing recycled aggregates by enabling further savings.

1: Hot air drying device
2: Lightweight foreign matter screening and separation device
3: Lightweight foreign matter collection device
4: Cyclone flying waste collection device

Claims (5)

delete delete A hot air blower (10) that generates hot air, a sealed transfer chamber (11) that has a sealed internal space and has an inlet at the rear through which construction waste is input and an outlet at the front through which dried construction waste is discharged, and It is provided in the inner space of the sealed transfer chamber 11 and includes a screen member that vibrates so that construction waste can spread and move; When construction waste mixed with recycled aggregate and lightweight foreign matter is introduced into the sealed transfer chamber 11 through the inlet and falls onto the screen member, hot air is applied to the construction waste to dry it, thereby reducing the moisture content of the recycled aggregate and lightweight foreign matter. A hot air drying device (1) that reduces the bonding force between recycled aggregates or the bonding force between recycled aggregates and lightweight foreign substances;
A main body 20 that is made in a cylindrical shape with an internal space, is inclined to become lower as it goes forward, and rotates about the cylindrical axis, and a spiral rising airflow that flows spirally forward in the internal space of the main body 20 and the main body. It includes a blower 21 that forms a main airflow flowing in the direction of extension of the main body 20, and an inlet through which construction waste flows is formed at the rear of the main body 20, and the main body 20 is at the front. The foreign matter outlet through which light foreign matter separated from the recycled aggregate and suspended by the spiral upward air current and the circumferential air current blowing inside are discharged, and the aggregate outlet through which the circulated aggregate is discharged, are located on the upper front surface of the main body 20 and the upper part of the main body 20, respectively. It is formed on the lower front surface; The blower 21 sends wind along the inner surface of the main body 20 and the main direction blowing nozzle 22a, which forms a main direction airflow in which the wind moves straight in the main direction, so that the wind blows into the main body 20. It is configured to include a spiral blowing nozzle (22b) that forms a spiral upward airflow moving forward in a spiral shape in the internal space and is located at the rear of the main body 20; In the process of injecting construction waste mixed with lightweight foreign matter and recycled aggregate from the screen member of the hot air drying device 1 into the internal space of the main body 20, the lightweight foreign matter contained in the construction waste is caught in the spiral upward air current and the circumferential air flow. It floats or floats and flies forward in the internal space of the main body 20 and is discharged from the main body 20, and the remaining recycled aggregate that fails to float is transported to the front of the main body 20 and discharged from the main body 20, thereby generating construction waste. Lightweight foreign matter separation device (2) in which light foreign matter and recycled aggregate contained in are separated and discharged;
A lightweight foreign matter collection device (3) for collecting lightweight foreign materials separated and discharged from the lightweight foreign material sorting and separation device (2); and
It has a configuration in which a cyclonic flying product collection device 4, which collects flying products generated in the process of discharging and collecting lightweight foreign substances by sucking air in a cyclonic manner, is arranged sequentially;
The lightweight foreign matter collection device (3) has an internal falling space, and the lightweight foreign material collection device (3) is connected to a suction pipe (40) leading to the cyclone flying product collection device (4), so that the lightweight foreign material screening and separation device (2) Lightweight foreign matter separated and discharged from the light reaches the internal falling space of the lightweight foreign matter collection device (3) and falls due to a decrease in floating speed. It does not fall even in the internal falling space of the lightweight foreign material collection device (3) and still exists in a floating state. The flying products are sucked into the suction pipe (40) by the suction force from the cyclone flying product collection device (4);
A circulation pipe (43) is provided that connects the cyclone flying product collection device (4) and the blower (21) of the lightweight foreign matter separation device (2), and the cyclone flying product collection device (4) is equipped with a filter (44). It is provided so that the air sucked into the cyclone flying product collection device (4) is supplied to the blower (21) through the circulation pipe (43) with the flying products additionally removed through the filter (44). , A recycled aggregate production device, characterized in that the blower (21) creates a suction force that blows into the internal space of the main body (2) and sucks air in a cyclonic manner within the cyclone flyaway collection device (4). According to paragraph 3,
On the inner surface of the main body 20 provided in the lightweight foreign matter separation device, a plate-shaped inner wing member 24 extending in the circumferential direction is perpendicular to the inner surface of the main body 20 and is the center of the cross-section in the main direction of the main body 20. It is provided to protrude toward, and a plurality of inner wing members 24 are provided at intervals along the circumference in the circumferential cross section of the main body 20;
As the main body 20 rotates, the construction waste contained in the inner space of the main body 20 is pulled up toward the apex in the circumferential cross section of the main body 20 by the inner wing member 24, and as it approaches the apex, It falls naturally from the inner wing member 24, and in the process of falling, the construction waste is separated from the recycled aggregate by the circumferential airflow and the spiral upward airflow and flies to the front foreign material outlet while floating, and the fallen recycled aggregate is A recycled aggregate production device characterized in that it moves along the internal space of the main body (20) and is discharged through the aggregate outlet. As a method of producing recycled aggregate from construction waste,
Using the recycled aggregate production device of claim 3 or 4;
Using a hot air drying device (1), hot air is applied to the input construction waste to reduce the water content of the recycled aggregate and lightweight foreign substances that make up the construction waste, and to reduce the bonding force between the recycled aggregate or the bonding force between the recycled aggregate and lightweight foreign materials. step;
Using the lightweight foreign matter sorting and separating device (2), construction waste that has been dried and then inputted is transported. During the transfer process, a spiral upward airflow and a circumferential air flow are formed in the internal space of the lightweight foreign material sorting and separating device (2) by blowing to make the light weight. Separating and discharging the recycled aggregate and lightweight foreign materials by blowing away the foreign materials;
Collecting lightweight foreign materials that are separated and discharged from the lightweight foreign material sorting and separation device (2) and falling using the lightweight foreign material collection device (3) and simultaneously collecting recycled aggregates that are separated and discharged from the lightweight foreign material sorting and separating device (2); and
A method for producing recycled aggregates, characterized in that it includes the step of collecting flying products generated during the discharge and collection of lightweight foreign substances using a cyclonic flying product collection device (4) that sucks air in a cyclonic manner.

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