KR20180035349A - Water-power Substance Separation Device for Recycling Aggregate - Google Patents

Abstract

The present invention provides a water-powered separating device of foreign materials for recycled aggregates, which separates foreign materials mixed in aggregates in a producing process of recycled aggregates which are ground in the shape of aggregates among construction wastes, by means of water power to produce recycled aggregates having good quality, and efficiently discharges each of aggregates and foreign materials. The device comprises: an immersion tank which has a treatment space for storing cleaning water therein and accommodating aggregates introduced from the outside to separate foreign materials from the aggregates, and comprises a foreign material discharge port for discharging foreign materials on one end of an upper part thereof; a stepped injecting unit which is installed in the immersion tank, and separates foreign materials by injecting water or air to the aggregate which is introduced to the treatment space, falls and comes in contact; a foreign material dehydrating unit which is installed to correspond to the foreign material discharge port, receives separated foreign materials from the stepped injecting unit, and dehydrates the same; and an aggregate discharge unit which is installed to correspond to a lower end within the treatment space of the immersion tank, transfers the aggregate separated from foreign materials to discharge the same, and at the same time, removes the cleaning water from the aggregates.

Description

[0001] The present invention relates to a water-power separation device for recycling aggregates,

The present invention relates to a foreign matter separation apparatus for recycled aggregate, and more particularly, to a method for producing recycled aggregate by separating impurities contained in aggregate by hydraulic force in the production process of recycled aggregate, And an object of the present invention is to provide a foreign matter hydrodynamic separator for circulating aggregate which can efficiently discharge aggregate and foreign matter separately.

Generally, construction waste such as waste bricks, waste blocks, waste concrete, waste asbestos, waste wood, waste synthetic resin, and rebar is generated at dismantling and new construction sites of urban reconstruction and redevelopment sites, apartments and buildings. In the case of reclaimed landfill, landfill and landfill costs are high, and the environment is seriously adversely affected. Therefore, in view of the environment-friendly aspect and recycling of resources, construction wastes are collected in a predetermined place without being buried, It is produced through good quality resources.

The construction waste is collected and then crushed first by a crusher and the scrap iron is separated and discharged by an electronic sorting machine. After the soil and foreign matter are separated and discharged by the rotation of the blower, a vacuum screen And other waste materials are removed by high-pressure water spraying, and the aggregate is again crushed through the crusher to obtain the recycled aggregate.

In the intermediate treatment process for increasing the recycling rate of construction waste, it is important to select the efficient separation of recyclable aggregate and foreign matter.

As disclosed in Korean Patent Registration No. 654250 (2006.12.06.), As a prior art disclosed in relation to an apparatus for selectively separating construction wastes as described above, an inclined screen for separating floating matters is formed on the upper side of the water tank, The fine aggregate and the sifted fine particles discharged through the discharge port are separated and cleaned by a fine-grained separation slope screen installed below the discharge port, so that the structure is simple. So that it can be economically treated.

In addition, Korean Patent Registration No. 756420 (Aug. 31, 2007) discloses a wet screen sorting apparatus for cleaning construction waste, crushing aggregate and foreign matter, and removing foreign matter, Wherein the water immersion tank has an inclined surface and a semicircular concave portion is formed in the middle of the inclined surface so that the foreign matter separation rotating body is built in, The rotating body is provided with the function of stirring the construction waste descending on the inclined surface while rotating with the steer arm and lifting the foreign matter; A foreign matter discharge screw having a screw blade is floated to the water surface to be discharged to the outside through the foreign matter discharge port at one upper end of the water immersion tank; A water jetting device is provided at one side of the water immersion tank slope so as to push foreign substances floating on the water surface toward the foreign matter discharge screw; And a means for discharging the washed aggregate, which is stacked on the bottom of the water immersion tank, to the outside using a discharge conveyor. Accordingly, there is known a foreign matter sorting and separating apparatus capable of shortening the overall working time and increasing the space utilization.

However, in the case of the above-mentioned prior art No. 654250, since only the screen is constituted as means for separating the fine particles from the aggregate, it is difficult to separate the fine particles contained in the aggregate, This is because the cyclone-type separator is applied in order to separate foreign matter having a small specific gravity from the above-mentioned Japanese Patent No. 756420, so that the particulate foreign matter attached to the aggregate is not separated and the foreign matter in the water- There is a problem that the moisture content of the discharged foreign matter is high and the residual vinyl which is sucked in the cyclone is not discharged by the cyclone in the case of cloth such as cloth or wooden piece.

In addition, in the above-mentioned JP-B No. 756420, since aggregate materials separated by a flooding tank are discharged by applying a conveyor-type discharge conveying means, aggregate materials are discharged together with the washing water in the flooded tank, .

Korean Registered Patent No. 10-0654250 (December 2006) Korean Registered Patent No. 10-0756420 (August 31, 2007)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to improve the separation efficiency of foreign matters from aggregates by adopting a double screw type aggregate discharging method while separating foreign substances in aggregate by stair- It is an object of the present invention to provide a foreign matter separating apparatus for recycled aggregate which minimizes the water content of the discharged foreign matter and can remove the water during the discharge of the aggregate to improve the quality of the produced recycled aggregate.

The present invention provides a foreign matter separating apparatus for recycling aggregates, which comprises a washing water reservoir therein, a processing space for separating foreign matter from the outside by receiving aggregate introduced from the outside, and an outlet for discharging foreign matter at an upper end thereof Water immersion tank; A stepped splitter installed in the water immersion tank and spraying water or air toward the aggregate while dropping the aggregate flowing toward the processing space to separate the foreign matter; A foreign matter dewatering unit installed in correspondence with the foreign material discharge port of the water immersion tank and supplied with foreign matters separated from the stepped partitioning unit and performing dehydration treatment; And an aggregate discharging unit installed in correspondence with a lower end of the immersion tank in the treatment space, for transferring and discharging the separated aggregate, and removing the washing water on the aggregate.

And a precipitating agent supplier provided corresponding to the upper part of the flooding tank and capable of supplying a precipitating agent toward the treatment space in the flooding tank, wherein the precipitating agent supplier is capable of setting a precipitating agent injection timing according to the injection cycle or water concentration Thereby constituting precipitant setting means.

Wherein the stepped injection part comprises a multi-step contact body having a stepped structure in which a plurality of contact surfaces are formed so that the aggregate falling and flowing in from the upper side can be sequentially contacted, and a multi-step contact body provided on the multi- And spraying means for spraying the powder.

The contact surface of the multi-stage contact body is formed to be inclined downward forward toward the moving direction of the aggregate so that the aggregate can be smoothly contacted and moved.

Wherein the spraying means includes a spray nozzle for spraying and supplying wash water under a high pressure state and an air nozzle for spraying and supplying air from the external blower in a high pressure state, Or nozzle setting means for setting the air to be selectively ejected.

Wherein the sprinkling nozzle and the air nozzle of the spraying means are configured to be sprayed toward the upward sloping direction so that the foreign matter separated from the aggregate can float toward the water surface, And an angle setting means for setting the angle so as to be changeable in accordance with the content of the foreign matter in the aggregate.

The water dewatering unit includes a dewatering screen provided corresponding to an outlet of the water immersion tank for dewatering foreign matter, a treatment water chamber for containing and storing the dewatered water from the dewatering screen, And constitutes a water circulation means for circulating and supplying the water to the stepped-dispersed portion.

The treatment water chamber is provided with a water level control valve for sensing the level of the water stored therein and controlling the inflow of the makeup water from the outside.

Wherein the water circulation means includes a circulation pump for circulating and supplying water in the process water chamber and a circulation supply pipe connected to supply the water from the circulation pump to the water immersion tank or the stepped- The circulation supply pipe includes a main supply pipe extending from the circulation pump and supplied with water, a first path pipe connecting the main supply pipe to supply water to the submergence tank, And a second path piping for connecting water to the step-like injection part.

The aggregate discharge unit includes a discharge chamber having a conveying path for the aggregate therein and extending in the longitudinal direction and having a discharge port at one end thereof and a discharge screw rotatably installed on the discharge chamber for conveying the aggregate in the discharge chamber, And a drive motor installed at one end of the discharge chamber and connected to one end of the discharge screw to apply rotational force.

The discharge screw being provided with a rotary shaft rotatably installed on the discharge chamber and a discharge space provided on the rotary shaft so as to be able to transport the aggregate in a transportable manner and spaced apart from the rotary shaft to discharge water on the aggregate, And has a screw blade.

According to the hydraulic separator for foreign matter for recycled aggregate according to the present invention, since the repulsive drop contact force of the aggregate and the jetting force of water or air are applied to the falling aggregate to separate the foreign matter, It is possible to improve the production quality. Further, since the foreign matter is floated by injecting force so as to face the path separated from the aggregate and dehydrated to the discharged foreign matter, the moisture content of the foreign matter is reduced by 20% or more relative to the existing water content, .

In addition, since the foreign matter separating apparatus for recycled aggregate according to the present invention is constructed such that a space for draining water can be secured in the course of transportation for discharging aggregate, it is possible to prevent the leakage of washing water in the flooding tank, It is possible to maintain the continuous operation performance for separation and to remove the moisture of the aggregate from the discharging process to speed up the work and improve the production quality of the recycled aggregate.

In addition, the apparatus for separating foreign materials for recycled aggregate according to the present invention is configured to circulate the treated water dehydrated to foreign matter separated from the aggregate to the flooded tank or the stepped shredder, thereby reducing water consumption required for continuous operation It is possible to reduce the management cost and to control the inflow of the replenishing water automatically so that the convenience of the manager can be improved.

1 is a front view showing an embodiment according to the present invention;
2 is a plan view showing an embodiment according to the present invention.
3 is an enlarged view and a partially enlarged view schematically showing a first embodiment of a stepped injection part in an embodiment according to the present invention.
4 is an enlarged view schematically illustrating a second embodiment of a stepped injection portion in an embodiment according to the present invention.
FIG. 5 is an exemplary diagram schematically showing the injection means among the stepped division parts according to the embodiment of the present invention. FIG.
FIG. 6 is a front view showing the foreign body dehydrating section in the embodiment according to the present invention. FIG.
FIG. 7 is a side view showing the foreign body dewatering unit according to the embodiment of the present invention. FIG.
8 is a cross-sectional view illustrating an aggregate discharge portion in an embodiment according to the present invention.
Figure 9 is a front view of an exhaust screw in an embodiment according to the present invention;

The present invention relates to a water immersion tank comprising a washing water tank for storing washing water therein, a processing space for separating foreign materials from the outside by receiving aggregate, and a foreign matter outlet for discharging foreign matter at an upper end thereof; A stepped splitter installed in the water immersion tank and spraying water or air toward the aggregate while dropping the aggregate flowing toward the processing space to separate the foreign matter; A foreign matter dewatering unit installed in correspondence with the foreign material discharge port of the water immersion tank and supplied with foreign matters separated from the stepped partitioning unit and performing dehydration treatment; And an aggregate discharging unit installed in correspondence with the lower end of the flooding tank to discharge the aggregate separated from the foreign matter and discharging the washed water from the aggregate. .

BEST MODE FOR CARRYING OUT THE INVENTION Next, a preferred embodiment of a foreign matter separating apparatus for recycled aggregate according to the present invention will be described in detail with reference to the drawings.

1 and 2, an apparatus for separating foreign bodies for recycled aggregate according to the present invention comprises a water immersion tank 10, a step-like splitter 20, a dewatering unit 30, And an aggregate discharge unit 40.

The water immersion tank 10 has a space for receiving and storing washing water therein and for receiving a predetermined amount of aggregate from the outside. That is, the water immersion tank 10 is opened to open the upper surface of the immersion tank 10 to allow the aggregate to flow therein, and the aggregate introduced from the outside is immersed in the washing water to form a treatment space for separating foreign matter on the aggregate.

The aggregate is moved from the outside through a separate conveyor C so that the conveyor C is disposed on the upper side of the water immersion tank 10 and the aggregate So that they can be dropped and introduced.

The water immersion tank 10 is formed in the form of a hopper having a structure having an upper light-tight narrowing structure. The lower end of the water immersion tank 10 is provided with an opening / closing valve 18 together with a drain port 17 capable of discharging polluted treated water by an aggregate cleaning operation .

The immersion tank (10) is provided with a foreign matter discharge port (11) capable of discharging foreign matter, that is, floating foreign matter in the wash water surface in the immersion tank (10).

1, the water immersion tank 10 is provided at an upper portion of the water immersion tank 10 corresponding to the upper open top surface, and is disposed in the immersion tank 10 toward the processing space in which the aggregate and the washing water are contained And constitutes a precipitant feeder 13 capable of feeding a precipitant (for example, a polymer flocculant or the like).

The precipitant supplier 13 includes a settling agent setting unit 15 that can set a settling agent into the immersing tank 10 while allowing the settling agent to enter the immersing tank 10 while holding a predetermined amount of the precipitating agent therein, Respectively. That is, the precipitant feed-in driving of the precipitant feeder 13 is driven and controlled in accordance with the setting information of the precipitator setting means 15.

The settling agent setting means 15 can drive and control the supply timing of the settling agent feeder 13 by setting a settling agent input timing according to the input period according to the operator's time setting, It is also possible to control the supply timing of the precipitant feeder 13 by setting the precipitator injection timing according to the measured water concentration after the concentration measuring device is installed in the tank 10.

The stepped-shape splitter 20 separates foreign matter from the aggregate falling from the conveyor C, which is the initial supply facility of the aggregate, toward the water immersion tank 10.

As shown in FIG. 1, the stepped collapse portion 20 is provided in the immersion tank 10 so that the conveyor C is positioned to correspond to the upper side.

Since the conveyor C is configured to be positioned at a predetermined distance from the step-like splitter 20, when the aggregate falls from the conveyor C, a structure in which a contact impact with the step-like splitter 20 can be applied do.

As shown in FIG. 3, the stepped-shape splitter 20 is configured such that the aggregate flowing from the conveyor C toward the processing space of the water immersion tank 10 drops and contacts with the aggregate, The multi-stage contact body 21 and the injection means 25 are provided as a structure that can be separated.

The multi-stage contact body 21 is provided with a contact surface 22 on which the aggregate to be dropped from the upper side can be contacted, and a plurality of (three in Fig. 3) contact surfaces (22) are formed.

Since the multi-stage contact member 21 is made of a metal material such as a steel plate or an alloy steel having excellent rigidity and impact resistance and is formed by the surface of the contact surface 22 of the multi-stage contact member 21, It is preferable that the contact efficiency of the aggregate is improved while preventing deformation due to contact.

The contact surface 22 of the multi-stage contact member 21 is formed as a horizontal plane or an inclined plane. For example, as shown in Fig. 3, the contact surface 22 of the multi-stage contact body 21 may be formed in a horizontal plane that is flat in the transverse direction, so that only excellent contact efficiency can be achieved. 4, the contact surface 22 is sloped forward downward toward the direction of movement of the aggregate so that the aggregate contacts the contact surface 22 and at the same time the forward direction of movement is indicated, It is also possible to constitute it so that it can be moved in contact with it.

The injection means (25) is arranged on the multi-stage contact body (21) and is configured to inject water or air at a high pressure into an aggregate falling toward the contact surface (22). The injection means 25 injects water or air into the aggregate at a high pressure in the course of contact with the contact surface 22 with respect to the aggregate falling in contact with the contact surface 22 of the multi- It is designed to separate and float stained foreign matter.

5, the spraying means 25 includes a spray nozzle 26 for spraying and supplying wash water under a high pressure, an air nozzle 27 for spraying air supplied from the external blower B at a high pressure, Respectively.

The water spray nozzle 26 and the air nozzle 27 of the spraying means 25 may be configured to simultaneously drive both the collectors together to spray water and air toward the aggregate, 26 and the air nozzle 27 so that only one of water and air can be sprayed.

The spraying means 25 is provided with a nozzle setting means 28 for selecting one of the water spray nozzle 26 and the air nozzle 27 to selectively spray water or air.

The nozzle setting means (28) is configured to apply a control signal set by an operator to the injection means (25). That is, the nozzle setting means 28 controls the spraying nozzle 26 and the air nozzle 27 to be driven, or selectively drives only one of the spray nozzle 26 and the air nozzle 27 It is possible to carry out setting control.

Since the setting reference of the nozzle setting means 28 is set and controlled based on the size of the aggregate, the work amount, the foreign matter content, and the like, it is possible to improve the work efficiency for separating the foreign matter in accordance with the work environment.

The water spray nozzle 26 and the air nozzle 27 of the spray means 25 are installed to spray water or air forward toward the aggregate and are installed to spray toward the forward upward slant direction.

The upward inclination angle alpha of the water spray nozzle 26 and the air nozzle 27 toward the front side is set to be the upper side of the installation surface on the multi-stage contact member 21 on which the injection means 25 is provided, Is formed so as to form an injection angle (alpha) that makes an inclination angle of 5 to 25 degrees.

The spraying means 25 is provided with a spraying angle setting means 29 for setting the spraying angle alpha of each spraying nozzle 26 and the air nozzle 27 to be changeable in accordance with the foreign matter content of the aggregate . That is, the water spray nozzle 26 and the air nozzle 27 of the spray means 25 are respectively installed on the multi-stage contact body 21 so as to adjust the vertical angle, The angle of the water spray nozzle 26 and the angle of the air nozzle 27 can be changed according to the angle set value.

The adjustment angle of the spray nozzle 26 and the air nozzle 27, which can be changed according to the spray angle setting means 29, is configured to be adjustable within a range of 5 to 25 °.

As described above, by forming the spraying means 25 capable of spraying water or air toward the upward inclination direction, it is possible to smoothly float the foreign matter separated from the aggregate toward the water surface.

The foreign matter dewatering unit 30 is installed to correspond to the foreign object outlet port 11 of the water immersion tank 10 and is positioned so as to supply foreign matter separated from the stepped-up splitter unit 20 and is discharged from the water immersion tank 10 And performs a function of dehydrating foreign matters.

6 and 7, the foreign matter dewatering unit 30 includes a dewatering screen 31 provided corresponding to the foreign object outlet 11 of the water immersion tank 10 for dewatering foreign matter, 31 and a water circulating means 35 for circulating and supplying water in the process water chamber 33. The water circulating means 35 is a water circulating means for circulating and supplying water in the process water chamber 33. [

The dewatering screen 31 has a structure for separating foreign matter and water, and is configured to have the same structure as a screen such as a general vibration screen, and thus a detailed description thereof will be omitted.

As shown in FIG. 7, the process water chamber 33 is provided with a water level control valve 34 for sensing the level of water stored therein and controlling the inflow of the makeup water from the outside. That is, the water stored in the treatment water chamber 33 is configured to be always filled with a predetermined set water level. When the water in the treatment water chamber 33 is lower than the set water level, the water level control valve 34 is opened, And the water level control valve 34 is closed when the water in the treatment water chamber 33 is filled up to the set water level, thereby blocking the external water from being supplied.

The water submerged tank 10 and the stepped submerged portion 20 are respectively supplied with water from the treatment water chamber 33 and the water circulation means 35 is provided in the water treatment chamber 33 To the flooding tank (10) or the stepped collapse portion (20).

The water circulation means 35 includes a circulation pump 36 for circulating and supplying water in the process water chamber 33 and a circulation pump 36 for circulating water from the circulation pump 36 through the water immersion tank 10 or the stepped- 20 to supply water to the circulation supply pipe 37. [

The circulation supply pipe 37 includes a main supply pipe 37a extended from the circulation pump 36 and supplied with water and a water supply pipe 37b for supplying water from the main supply pipe 37a toward the water immersion tank 10 And a second path pipe 37c connected to the main supply pipe 37a so as to supply water to the stepped-particle splitting unit 20. The first path pipe 37b connects the first supply pipe 37a and the second supply pipe 37b.

In the above, the first path pipe 37b and the second path pipe 37c are provided with control valves 38, respectively. That is, the control valve 38 controls the flow of the water from the circulation pump 36 along the main supply pipe 37a to the submerged tank 10 or the stepped- And the flow path of the first path piping 37b and the second path piping 37c is controlled to open and close.

For example, the first path pipe 37b and the second path pipe 37b may be formed so that the water supplied from the process water chamber 33 can be supplied to both the water immersion tank 10 and the stepped- So that the water supplied from the treatment water chamber 33 can be supplied only to either the water immersion tank 10 or the stepped collapse portion 20, It is possible to selectively open and close the second path 37b and the second path 37c.

By constituting the water circulation means 35 capable of circulating and supplying the dehydrated water to the water immersion tank 10 or the stepped-particle splitting unit 20 as described above, the amount of water required for continuous operation is reduced and maintained It is possible to reduce the management cost and to control the inflow of the replenishing water automatically so as to provide the convenience of the manager.

The aggregate discharging unit 40 discharges the aggregate separated from the foreign matter in the water immersion tank 10 so as to be mass-produced, and drains and removes the washed water on the aggregate.

As shown in FIG. 1, the aggregate discharge unit 40 is installed in correspondence with the lower end of the immersion tank 10 in the process space so as to transfer the aggregate in the flood control tank 10 to the outside.

The aggregate discharging unit 40 has one end corresponding to the lower end of the water immersion tank 10 and is inclined upward in one upward direction so as to smoothly move the aggregate, And it is possible to achieve a smooth drainage efficiency for the washing water of the aggregate.

8, the aggregate discharge unit 40 includes a discharge chamber 41 having a conveying path of aggregate therein, a discharge screw 43 rotatably installed on the discharge chamber 41, And a driving motor 45 installed at one end of the discharge chamber 41 and connected to one end of the discharge screw 43 to apply rotational force.

The discharge chamber 41 has a discharge port 42 extending upward in the longitudinal direction and having an upwardly inclined upper end and an outlet 42 through which the aggregate can be discharged downward.

8 and 9, the discharge screw 43 has a structure in which aggregates are rotated along a transport path in the discharge chamber 41, A rotating shaft 43a provided on the rotating shaft 43a and extending along the longitudinal direction of the rotating shaft 43a and being movable in a double screw- (43b).

9, the double screw blade 43b has a drainage space 44 which is spaced apart from the outer circumferential surface of the rotary shaft 43a so that aggregate water can be drained toward the water immersion tank 10, .

The double screw blade 43b is formed by using two screw blades so that the upper and lower ends are connected to each other on the rotating shaft, thereby forming a double screw blade having an integral structure.

The operation of the foreign matter separating apparatus for recycled aggregate according to the present invention will be briefly described as follows. First, the power is applied to the stepped dividing section 20, the foreign matter dewatering section 30 and the aggregate discharging section 40 And receives the aggregate flowing through the conveyor C in a state in which they are driven. At this time, the aggregate falls from the conveyor C and contacts the contact surface 22 of the multistage contact body 21 of the stepped collision portion 20. At the same time, the injection means 25 injects water or air at high pressure toward the aggregate, And separates the foreign matter from the wash water. The aggregate sinks to the lower portion of the water immersion tank 10 while the foreign substances floating on the water surface are discharged from the water immersion tank 10 through the foreign material outlet port 11 and supplied to the foreign matter dewatering unit 30, The dewatering screen 31 of the dewatering unit 30 is driven to dehydrate the moisture on the foreign matter so that the water is stored in the treatment water chamber 33. On the other hand, the aggregate of the separated aggregate is transferred to the discharge chamber 41 of the aggregate discharge unit 40 by the rotation of the discharge screw 43 and reaches the discharge port 42 of the discharge chamber 41, Collected aggregate.

Hereinafter, the treatment results related to foreign matter removal are evaluated after applying the foreign matter separating apparatus for recycled aggregate according to the present invention.

[Disposal of recycled aggregate]

The test for the foreign matter content of the recycled aggregate was carried out in accordance with KS F 2576, "Test for the content of foreign matter in the recycled aggregate", and the test method was applied to water spray, air spray, A foreign matter content test was carried out.

[Disposal of recycled aggregate with water spraying method]

(1) Content of foreign matters to which a screen is applied (Comparative Example)

The prepared aggregates were put into a general screening apparatus for separating foreign matter by contacting with the screen, and then the foreign matter content of the aggregate was measured. The results are shown in Table 1 below.

(2) Content of impurities using water spray (Example 1)

The prepared aggregate was injected into a foreign matter separation apparatus for recycled aggregate according to the present invention, and water was sprayed toward the falling aggregate by applying a water spraying method. Thus, foreign matter was separated from the aggregate and the foreign matter content of the aggregate was measured. Table 1 shows the results.

division Comparative Example Example 1 Foreign matter content (%) 7.64 0.76

[Treatment of foreign matter in recycled aggregate with air injection method]

(1) Content of foreign matters to which a screen is applied (Comparative Example)

The prepared aggregates were put into a general screening apparatus for separating foreign matter by contacting with the screen, and then the foreign matter content of the aggregate was measured. The results are shown in Table 2 below.

(2) Content of foreign matters to which air injection is applied (Example 1)

The prepared aggregate was injected into a hydraulic separator for foreign matter for recycling aggregate according to the present invention, and air was injected toward the falling aggregate by applying the air spraying method. The foreign matter was separated and the foreign matter content of the aggregate was measured. Table 2 shows the results.

division Comparative Example Example 1 Foreign matter content (%) 7.64 0.93

[Treatment of recycled aggregate with water and air combined injection method]

(1) Content of foreign matters to which a screen is applied (Comparative Example)

The prepared aggregate was put into a general screening apparatus for separating foreign matter by contacting with the screen, and the foreign matter content of the aggregate was measured. The results are shown in Table 3 below.

(2) Content of foreign matters to which water and air composite injection is applied (Example 1)

The prepared aggregate is injected into a hydraulic separator for foreign matter for recycling aggregate according to the present invention, and water and air are injected toward the falling aggregate at the same time by applying the water and air composite spraying method, so that foreign matter is separated and the foreign matter content The results are shown in Table 3 below.

division Comparative Example Example 1 Foreign matter content (%) 7.64 0.69

That is, according to the present invention, the foreign matter is separated from the aggregate which falls due to repetitive falling contact force of the aggregate together with the spraying force of water or air, so that the excellent separation efficiency between the aggregate and the foreign matter It is possible to improve the production quality of the recycled aggregate. Further, since the debris is discharged from the discharged foreign matter after the foreign matter is floated by injecting the aeration force so as to face the path separated from the aggregate, it is possible to reduce the water content by more than 20% compared to the existing water content.

In addition, since the present invention provides a space for drainage of water in the process of transporting the aggregate, it is possible to prevent the loss of the washing water in the flood control tank and to maintain and maintain the continuous operation performance It is possible to remove the moisture of the aggregate from the discharge process, thereby making it possible to speed up the work and to improve the production quality of the recycled aggregate.

Although the preferred embodiments of the foreign matter separating apparatus for recycled aggregates according to the present invention have been described above, the present invention is not limited thereto, and various modifications may be made within the scope of the claims, the specification and the accompanying drawings. And this is also within the scope of the present invention.

10: water immersion tank 11: foreign material discharge port 13:
15: settling agent setting means 17: drain port 18: opening / closing valve
20: step divider 21: multistage contact member 22: contact surface
25: injection means 26: water spray nozzle 27: air nozzle
28: nozzle setting means 29: spray angle setting means 30: foreign matter dewatering unit
31: Dewatering screen 33: Process water chamber 34: Level control valve
35: water circulation means 36: circulation pump 37: circulation supply piping
37a: Main supply piping 37b: First path piping 37c: Second path piping
40: aggregate discharge portion 41: discharge chamber 42: discharge port
43: discharge screw 43a: rotary shaft 43b: double screw blade
44: Drain space 45: Drive motor

Claims (11)

A water immersion tank for storing washing water therein, a processing space for receiving aggregate introduced from the outside and separating foreign matter, and a foreign matter outlet for discharging foreign matter at an upper end;
A stepped splitter installed in the water immersion tank and spraying water or air toward the aggregate while dropping the aggregate flowing toward the processing space to separate the foreign matter;
A foreign matter dewatering unit installed in correspondence with the foreign material discharge port of the water immersion tank and supplied with foreign matters separated from the stepped partitioning unit and performing dehydration treatment;
And an aggregate discharging unit installed in correspondence with a lower end of the flooding tank to discharge the aggregate separated from the foreign matter and discharging the washed water from the aggregate.
The method according to claim 1,
And a precipitating agent supplier installed in the flooding tank in correspondence with the upper part and being provided to be able to inject a precipitating agent toward the processing space in the flooding tank,
Wherein the precipitant feeder is provided with precipitant setting means for setting a precipitant injection timing according to the injection period or the water concentration.
The method according to claim 1,
Wherein the stepped sprayer includes a multi-stage contact body having a stepped structure in which a plurality of contact faces are formed so that the aggregate flowing in and falling from the upper side can be sequentially contacted, and a multi-step contact body provided on the multi- And spraying means for injecting the high-pressure sprayed foreign material.
The method of claim 3,
Wherein the contact surface of the multi-stage contact body is formed to be inclined downward forward toward the moving direction of the aggregate so that the aggregate can be smoothly moved in contact with the moving direction of the aggregate.
The method of claim 3,
Wherein the spraying means comprises a spray nozzle for spraying and supplying wash water in a high pressure state and an air nozzle for spraying air supplied from an external blower in a high pressure state,
And a nozzle setting means for selecting one of the water spray nozzle and the air nozzle to selectively spray water or air to the spray means.
The method of claim 5,
Wherein the water spray nozzle and the air nozzle of the spray means are configured to be sprayed toward the upward sloping direction so that the foreign matter separated from the aggregate can float toward the water surface,
Wherein the spraying means includes spray angle setting means for setting the spray angle of the spray nozzle and the air nozzle so as to be changeable in accordance with the content of the foreign matter in the aggregate.
The method according to claim 1,
The water dewatering unit includes a dewatering screen provided in correspondence with the foreign object outlet of the water immersion tank and dewatering the foreign matter, a processing water chamber for containing and storing the dewatered water from the dewatering screen, Or the water circulation means for circulating and supplying the water to the stepped partitioning portion.
The method of claim 7,
And a water level control valve for controlling the flow of the replenishing water from the outside by sensing the water level of the water stored in the processing water chamber.
The method of claim 7,
Wherein the water circulation means includes a circulation pump for circulating and supplying water in the process water chamber and a circulation supply pipe connected to the water immersion tank or the stepped splitter to supply water from the circulation pump,
Wherein the circulation supply pipe includes a main supply pipe extending from the circulation pump and supplied with water, a first path pipe connecting the main supply pipe to supply water to the submergence tank, And a second path pipe connected to the step-like injection part to supply water to the step-like injection part.
The method according to claim 1,
The aggregate discharging portion includes a discharge chamber having a conveying path for the aggregate therein and extending in the longitudinal direction and having an outlet at one end thereof and an outlet And a drive motor installed at one end of the discharge chamber and connected to one end of the discharge screw to apply a rotational force.
The method of claim 10,
The discharge screw includes a rotating shaft rotatably installed on the discharge chamber, and a drain space provided on the rotating shaft so as to allow the aggregate to be transported and spaced apart from the rotating shaft so as to drain water on the aggregate A foreign matter hydrodynamic separator for aggregate regeneration comprising a double screw blade.

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