KR20080005046A - Apparatus for washing and sorting from recycled aggregates - Google Patents

Abstract

An apparatus for washing recycled aggregate and sorting external particles is provided to sort and remove various types of external particles mixed in the aggregate efficiently, by using a trommel screen installed within a cylinder drum and a reversely rotating counterturn screw. A rotary type cylinder drum(10) is supported by rotation rolls(1). A plurality of screws are attached on an inside of the cylinder drum. A trommel screen(20) is joined to fixed shafts(15) such that the trommel screen is rotated with the cylinder drum within the cylinder drum. A plurality of screws are attached to an inside of the trommel screen. An external particle discharge unit is installed within the trommel screen. The external particle discharge unit includes a counterturn screw formed reversely to the screws of the cylinder drum and the trommel screen. A discharge unit(40) is installed at one side of the cylinder drum, wherein the discharge unit has a plurality of pockets(42) each having an open side. A hopper(50) is installed within the discharge unit to collect and discharge recycled aggregate and sludge, which are sorted by the discharge unit. Further, a water supply device for washing recycled aggregate is installed inside the rotary type cylinder drum.

Description

Apparatus for Washing and Sorting from Recycled Aggregates}

1 is an overall perspective view showing a washing and foreign matter sorting apparatus of the recycled aggregate of the present invention

Figure 2 is a state diagram showing the inside of the recycled aggregate and foreign matter sorting apparatus of the present invention

Figure 3 is a state diagram showing a rotating cylindrical drum and trommel screen of the recycled aggregate and foreign matter sorting apparatus of the present invention

Figure 4 is a partial state diagram showing the inclination plate of the recycled aggregate and foreign matter sorting apparatus of the present invention

Figure 5 is a state diagram showing the operating state of the cleaning of the recycled aggregate and foreign matter sorting apparatus of the present invention

Figure 6 is a side view showing the operating state of the recycled aggregates and foreign matter sorting apparatus of the present invention

Figure 7 is a schematic view showing the discharge device for cleaning and recycling foreign matter sorting apparatus of the recycled aggregate of the present invention

<Explanation of symbols for the main parts of the drawings>

1: rotary roll 5: reduction motor

12, 22: screw 10: rotating cylindrical drum

13: aggregate inlet 14: inclined plate

20: Trommel screen 30: Foreign substance discharge device

32: reverse screw 40: discharge device

42: pocket 50: hopper

60: water supply device 70: aggregate injection hopper

80: first screen 85: second screen

The present invention relates to an apparatus for washing recycled aggregates and a foreign matter sorting device, and more particularly, efficiently sorting and removing various foreign matters such as wood, vinyl, styrofoam, plastic, resins mixed in the aggregate, and the sorting and removing process. The present invention relates to a device for cleaning and removing foreign matter from reclaimed aggregates to effectively remove soil deposited on the surface of aggregates.

Recently, the redevelopment and reconstruction of aging buildings are actively underway, but a lot of construction wastes are generated in this process, and the amount is increasing rapidly.

On the other hand, Korea currently prohibits the extraction of natural aggregates such as gangjagal and river sand, and in general, it uses crushed gravel and sea sand, but this situation also depends on imports because of insufficient supply.

In order to relieve the shortage of the gravel to some extent, recycled aggregates (hereinafter referred to as "recycled aggregates") that recycled waste concrete, which occupies the largest amount of construction waste, are being converted into substitutes. Unlike many other foreign matters, its quality is low, so it is used only as a low-grade product such as landfill or cover material, and there are many studies to improve the quality of recycled aggregate.

In general, among the foreign matters in the recycled aggregates, such as reinforcing bars are separated by magnetic separators from the recycled aggregate producers, and light foreign substances such as wood, vinyl, styrofoam, plastics, resins, etc. are sorted through blowers and aeration tanks. have.

However, light debris such as wood, vinyl, styrofoam, plastic, resin, etc. is not properly separated even through a blower or aeration tank. It is not good to sort even if it floats on water or blows with wind because it is higher than the specific gravity, and it contains a lot of moisture before putting it into the production site of recycled aggregate.

And, in the case of recycled aggregates, the earth and sand are put together in the process of inputting construction waste, and in the process of crushing, a lot of cement paste or soil is generated, so that the soil and cement paste are buried on the surface of the produced recycled aggregates.

In the case of making concrete using such recycled aggregates, it is necessary to remove them because they weaken the bonding strength and decrease the strength.In general recycled aggregate production sites, they are cleaned through aeration tanks, but sludge in the washing water after washing in aeration tanks. (Soil, cement paste) increases the content of the problem occurs for a long time cleaning.

Therefore, when producing recycled aggregates, foreign materials such as wood, vinyl, styrofoam, plastics, resins, etc. can be separated and sorted from recycled aggregates, and the quality of recycled aggregates can be improved by efficiently removing soil and cement pastes from recycled aggregates. In addition, when the recycled aggregates are washed, sludge (soil, cement paste) is removed together, and there is an urgent need for the development of a method for continuously cleaning for a long time and removing foreign substances.

The present invention has been made in order to improve the conventional problems as described above, and separated and recycled construction waste mixed with relatively light foreign materials such as wood, vinyl, styrofoam, plastic, resins and recycled aggregates for the purpose of recycling, recycling In cleaning the soil and cement paste on the aggregate, the recycled aggregate shredded to a certain size is removed by the trommel screen installed inside the rotating cylinder drum and the screw rotating in the reverse direction to the center to remove high quality recycled aggregate. It is an object of the present invention to provide a device for cleaning recycled aggregate and a foreign material sorting device.

As a means for achieving the above object, the cleaning and foreign matter sorting apparatus of the recycled aggregate of the present invention is supported by a rotating roll, the rotating cylindrical drum with a plurality of screws attached to the inside, and the inside of the rotating cylindrical drum A trommel screen coupled to a fixed shaft and attached with a plurality of screws therein so as to rotate together with the rotating cylindrical drum, and installed on the inside of the trommel screen and with screws of the rotating cylindrical drum and trommel screen. A foreign material discharge device provided with a reverse screw formed in a reverse direction, a discharge device having a plurality of pockets installed at one side of the rotary cylindrical drum and open at one side thereof, and installed inside the discharge device and sorted through the discharge device. It characterized in that it comprises a hopper for collecting and discharging the recycled aggregate and sludge.

In the above configuration, the water supply device is further installed on one side of the rotating cylindrical drum.

Preferably, a tooth is formed on an outer circumferential surface of the rotating cylindrical drum, and the gear is provided with a geared speed reduction motor, so as to efficiently transfer the driving force of the reduction motor to the rotating cylindrical drum.

Preferably, an aggregate inlet is formed at one end of the rotating cylindrical drum, and an inclined plate for easily discharging foreign matter and water to the outside is fixed inside the aggregate inlet to facilitate the discharge of water and foreign matter through the inclined play. It is characterized by that.

In the above configuration, the aggregate inlet hopper is inserted into the aggregate input hopper to facilitate the input of the recycled aggregate, it is characterized in that a large amount of recycled aggregate can be inserted into the rotating cylindrical drum through the aggregate input hopper.

Preferably, when the foreign matter is discharged to the outside of the aggregate inlet, it is characterized in that the first screen for screening the foreign matter and water is installed.

Preferably, the hopper is characterized in that the second screen for sorting the recycled aggregate and the sludge discharged to the outside is installed.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same number as much as possible even if displayed on different drawings.

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

1 is an overall perspective view showing an apparatus for cleaning recycled aggregates and foreign substances of the present invention, Figure 2 is a state diagram showing the inside of the apparatus for cleaning and removing foreign substances of the recycled aggregate of the present invention, Figure 3 is a recycled aggregate of the present invention Figure 4 is a state diagram showing a rotating cylindrical drum and trommel screen of the cleaning and foreign matter screening device, Figure 4 is a partial state diagram showing the inclined plate of the cleaning and foreign matter screening device of the recycled aggregate of the present invention.

In general, the process of producing recycled aggregates from construction wastes, such as wood crushing, vinyl, styrofoam, plastics, resins in the process of crushing through a crusher such as jaw crusher, cone crusher, impact crusher In order to separate the same foreign matter, it is sorted by wind and aeration tank, and it is produced recycled aggregate by magnetic screening to separate rebar.

The present invention is a device for separating and removing the foreign matter mixed together for the recycled aggregate having a particle size of about 10 ~ 40mm in the above process, and to wash and remove the soil and cement paste buried in the recycled aggregate.

As shown in the figure, the apparatus for cleaning and collecting foreign matters of the recycled aggregate of the present invention is supported by both the rotary rolls 1 on both sides of the rotating cylindrical drum 10 with a plurality of screws 12 attached thereto. And a plurality of screws 22 coupled to the fixed shaft 15 fixed to the rotating cylindrical drum 10 so as to rotate together with the rotating cylindrical drum 10 inside the rotating cylindrical drum 10. Is attached to the trommel screen 20, the foreign matter discharge device 30 is installed inside the trommel screen 20 and the screw 32 is formed in a reverse direction with the screws (12, 22) and the The discharge device 40 is installed on one side of the rotating cylindrical drum 10 and a plurality of pockets 42 having one side opened therein, and installed inside the discharge device 40 to provide the discharge device 40. It is composed of a hopper 50 which is transported through and collects the recycled aggregates and sludge selected.

In the above configuration, the water supply device 60 is installed inside the rotating cylindrical drum, the water supply device 60 is connected to the circulation pump to supply water into the rotating cylindrical drum. That is, the water supply device 60 is formed with a plurality of injection nozzles in a water supply pipe having a predetermined length, during operation, the pressure of the soil or cement paste and foreign matter accumulated in the foreign matter and aggregate stacked on the trommel screen 20, the hydraulic pressure To be removed through

On the other hand, as shown in Figure 2 and 4, the aggregate cylinder opening 13 is formed at one end of the rotating cylindrical drum 10, the inclined plate for easily discharging foreign matter and water in the aggregate injection hole 13 to the outside 14 is fixed.

The inclined plate 14 is fixed to the inner circumferential surface (ie, the inner circumferential surface of the opening) of the aggregate inlet 13 to have a predetermined inclination angle, which is fixed to both sides of the aggregate inlet 13 so as to discharge foreign matters from the inside ( To facilitate the outflow of water, including the float discharged by 30). That is, a portion of the inclined plate 14 is accommodated in the water accommodated in the rotating cylindrical drum 10, and the inclined plate 14 rotates during operation, so that the water inside and the floating matter contained therein are discharged to the outside. It is to be induced.

The aggregate input hopper 13 is inserted into the aggregate input hopper 70 to facilitate the input of the recycled aggregate.

The aggregate input hopper 70 may be manufactured to have a wide opening at the top to facilitate the input of aggregate, and the distal end of the aggregate input hopper 70 is installed to be inserted into the aggregate input hole 13. In this case, since it is not easy to fix the rotating cylindrical drum 10, the separate support frame 16 may be installed in front of the aggregate input hole 13 and may be installed by fixing the aggregate input hopper (70).

In addition, when the foreign matter is discharged to the outside of the aggregate inlet 13, the first screen 80 for the selection of the foreign matter and water may be installed.

The first screen 80 is formed to have a mesh of a predetermined interval, to separate the water discharged from the aggregate inlet 13 and the foreign matter (float) contained therein. That is, the water and the suspended matter are discharged to the outside at the same time by the rotation of the inclined plate 14 provided on the inner peripheral surface of the aggregate inlet (13). Accordingly, the water is hung through the first screen 80 to be stored underneath and circulated by a device such as a circulation pump (not shown), and the suspended matter filtered on the screen is moved to be inclined and stored separately.

On the other hand, in the same principle as the first screen 80, in front of the hopper 50, a second screen (85) for sorting the recycled aggregate and sludge discharged to the outside may be installed, the second screen (85) ) Selects the recycled aggregate and sludge from which the foreign matter is first removed, so that the recycled aggregate and the sludge are separated in a more pure state.

In addition, the gear 7 is formed on the outer circumferential surface of the rotating cylindrical drum 10, and the gear 7 is provided with a geared reduction motor 5, thereby reducing the weight of the rotating cylindrical drum 10. It is desirable to transmit the driving force of the motor 5 efficiently.

Hereinafter, the coupling relationship between the washing and the foreign matter screening device of the recycled aggregate of the present invention having the above configuration will be described.

First, the screw 12 is bolted and fixed along the inner surface of the rotating cylindrical drum 10, and the trommel screen 20 is fixed to the inside of the cylindrical drum 10 through a plurality of fixed shafts 15. It is fixed. At this time, the trommel screen 20 is fixed to the screw 22 bolt. In addition, the inside of the trommel screen 20 is fixed to the foreign matter discharge device 30 is formed by installing a reverse screw 32 formed in a reverse direction with the screws (12,22).

On the other hand, one side of the rotating cylindrical drum 10 is provided with a discharge device 40 is provided with a pocket 42, the pocket 42 is open on one side, a slot-type through-hole is formed on the entire surface It is made, a plurality is fixed along the inner peripheral surface of the discharge device (40). Subsequently, a hopper 50 for collecting recycled aggregate and sludge transported through the discharge device 40 and collected through the discharge device 40 is installed inside the discharge device 40, and the hopper 50 has a support frame formed outside. 16, shown in Figure 2) is made, but is installed to be inclined to facilitate the discharge of the recycled aggregate and sludge to the outside.

Subsequently, the rotary cylindrical drum 10 coupled as described above fixes a plurality of rotary rolls 1 to the floor or base frame to be installed and fits the rotary roll 1 to seat the rotary cylindrical drum 10. And the aggregate injection hopper (70) is inserted into the aggregate inlet (13) of the rotating cylindrical drum (10) to facilitate the input of recycled aggregate, and the foreign matter is discharged to the outside of the aggregate inlet (13). When it is installed, the first screen 80 for screening foreign matter and water is installed. Subsequently, the hopper 50 is provided with a second screen 85 for sorting the recycled aggregate and the sludge discharged to the outside, and the reduction gear motor geared to the gear (7) formed on the outer circumferential surface of the rotating cylindrical drum (10) Installing (5) completes the installation.

Hereinafter, with reference to Figure 1 and the drawings for the operation and effect of the washing and foreign matter screening apparatus of the recycled aggregate of the present invention having the above configuration and coupling relationship.

Figure 5 is a state diagram showing the operating state of the recycled aggregate and foreign matter sorting apparatus of the present invention, Figure 6 is a side view showing the operating state of the cleaning and foreign matter sorting apparatus of the present invention, Figure 7 is the present invention Schematic diagram showing the foreign matter discharge apparatus of the cleaning aggregate and foreign matter sorting device of.

As shown in the figure, through the aggregate injection hopper 70 inserted into the aggregate inlet 13 of the rotating cylindrical drum 10 in a state where water is filled to the h position (water level) in the rotating cylindrical drum 10. When the recycled aggregate in which foreign matters are mixed, the recycled aggregate in which the foreign matters are mixed by the rotating screw 12 of the rotating cylindrical drum 10 is transferred to the inside of the trommel screen 20, and the trommel screen The recycled aggregate conveyed to the inside of the 20 is conveyed toward the discharge device 40 (G direction, shown in Figure 5) by the rotating screw 22 of the trommel screen 20.

Subsequently, the discharge device 40 ascends the recycled aggregate to the surface of the water through the pocket 42, one side of which is rotated, and then settles again.

On the other hand, foreign matters mixed in the recycled aggregates are suspended above the surface by the above operation, and the foreign matters floating on the surface are external (F direction, shown in FIG. 5) through the reverse screw 32 of the foreign substance discharge device 30. To be discharged. The foreign matters discharged in this way are water and foreign matters are sorted by the first screen 80, the water is circulated by the circulation pump and the foreign matters are collected separately.

In addition, the recycled aggregate that was inside the trommel screen 20 rises to the surface of the water through its screw 22 and settles. At this time, the soil and cement paste (paste, diameter 10mm or less) buried in the recycled aggregate passes through the trommel screen 20 and goes to the lower portion of the rotating cylindrical drum 10, and the lower portion of the rotating cylindrical drum 10. The located soil and cement paste is conveyed toward the discharge device 40 through its screw 12.

Subsequently, the recycled aggregate and the sludge transported to the lower portion of the discharge device 40 are transferred to the hopper 50 to be collected after being transported through the pocket 42, and the recycled aggregate and the sludge discharged as described above are second screens. It is screened again through 85. That is, the recycled aggregate filtered through the second screen 85 and the sludge passed through the second screen 85 are separately stacked.

Preferably, since the foreign matter discharge device 30 also discharges water together with the foreign matter in the above-described process, the water supply device 60 is installed on one side of the rotating cylindrical drum 10 for supplying water, and the trommel The spraying can be made in the upward direction from the downward direction of the screen 20. In this way, the foreign matter buried in the recycled aggregate in the process of supplying water can be more easily floated to increase the screening effect.

Currently, the process of producing recycled aggregate is used to separate foreign matter such as recycled aggregate and wood, styrofoam, vinyl, plastic, resin, etc., but a lot of aeration tanks are used, but the selection is not 100% perfect. As in the present invention, by forming an artificial vortex by the reverse screw to remove the foreign matter by a strong washing, while the foreign matter covered between the recycled aggregate is raised to the water surface through the discharge device 40 and then sprayed during the fall Secondary cleaning allows for the selective sorting of debris.

In the process of cleaning the soil and cement paste buried in the recycled aggregates, the sludge is discharged together through the screw of the cylindrical rotating drum and the foreign substances are separated by the reverse screw, so that high-quality recycled aggregates can be produced with little foreign matter content.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, the apparatus for washing and sorting foreign matters of the recycled aggregate of the present invention can efficiently sort and remove various relatively light foreign matters such as wood, vinyl, styrofoam, plastic, resin, etc. mixed in the recycled aggregates. And during the removal process can effectively remove the soil and cement paste on the surface of the aggregate, thereby improving the quality of the recycled aggregate.

Claims (7)

A rotating cylindrical drum (10) supported and rotated by the rotating roll (1) and having a plurality of screws (12) attached thereto; A trommel screen 20 coupled to the fixed shaft 15 so as to rotate together with the rotating cylindrical drum 10 inside the rotating cylindrical drum 10, and having a plurality of screws 22 attached thereto. ; The foreign substance discharge device is installed inside the trommel screen 20, the reverse screw 32 is formed in a reverse direction with the rotating cylinder drum 10 and the screws 12, 22 of the trommel screen 20 ( 30); A discharge device (40) installed at one side of the rotating cylindrical drum (10) and having a plurality of pockets (42) open at one side thereof; A hopper 50 installed inside the discharge device 40 to collect and discharge the recycled aggregate and the sludge selected through the discharge device; Washing and foreign matter sorting apparatus of the recycled aggregate, characterized in that made. The method of claim 1, One side of the rotating cylindrical drum (10), the apparatus for cleaning and foreign matter sorting regeneration aggregate, characterized in that the water supply device 60 for washing the recycled aggregate is installed. The method of claim 1, Gears (7) are formed on the outer circumferential surface of the rotating cylindrical drum (10), and the gears (7) is washed and foreign matter sorting apparatus of the recycled aggregate, characterized in that the geared geared reduction gear (5) is provided. The method of claim 1, The aggregate cylindrical opening 13 is formed at one end of the rotating cylindrical drum 10, and the inclined plate 14 for easily discharging foreign substances and water to the outside is fixed to the aggregate inlet 13, and is characterized in that the regeneration is made. Aggregate cleaning and foreign matter sorting device. The method of claim 4, wherein The aggregate inlet (13) cleaning and foreign matter sorting device of the recycled aggregates, characterized in that the aggregate input hopper 70 is inserted and installed to facilitate the input of the recycled aggregates. The method of claim 4, wherein When the foreign matter is discharged to the outside of the aggregate inlet (13), when the first screen (80) for sorting the foreign matter and water is installed, washing and regeneration of the foreign aggregate sorting device. The method according to any one of claims 1 to 6, The hopper 50 is a washing and foreign matter sorting device of the recycled aggregate, characterized in that the second screen (85) is installed for sorting the recycled aggregate and sludge discharged to the outside.

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