KR101084625B1 - Apparatus for manufacturing recycled aggregate - Google Patents

Abstract

PURPOSE: An apparatus for producing recycled aggregate based on waste concrete is provided to minimize the discharge of ammonia gas due to a hardening reaction by stabilizing the exothermic reaction of the hardening reaction based on the water of an aqueous epoxy. CONSTITUTION: An apparatus for producing recycled aggregate based on waste concrete includes a pre-treating part(120) and a coating part(140). The coating part includes a coating loading stand(141) and a spraying unit(142). Aggregate(1) is loaded on the coating loading stand. An aqueous epoxy coating agent is sprayed to the aggregate. The aggregate and the aqueous epoxy coating agent are mixed by the vibration of the coating loading stand. The pre-treating unit includes a perforated drum(121) and a rotating unit(122). The perforated drum rotates, fine powder of the aggregate is discharged through the holes of the perforated drum(121a).

Description

Apparatus for producing recycled aggregate using waste concrete {APPARATUS FOR MANUFACTURING RECYCLED AGGREGATE}

The present invention relates to a circulating aggregate production device, and more particularly, to a circulating aggregate production device capable of producing a large amount of circulating aggregate having a low alkalinity to neutral alkalinity by using aggregates obtained from waste concrete such as construction waste. will be.

When the building or civil structure is demolished, a lot of construction waste is produced. There is a limit to the landfill of such construction waste, and if the construction waste continues to be reclaimed, it causes a problem of environmental pollution.

Therefore, not only the prohibition of illegal landfilling of construction wastes, but also the recommendation of processing and recycling aggregates required for construction wastes is highly recommended. Usage is increasing gradually.

Recycled aggregates are aggregates produced to have performances that meet the quality standards through shredding and sorting to recycle waste concrete and waste asphalt concrete among construction wastes.

There are various uses of circulating aggregates for road bases, road auxiliary bases, concrete, concrete products, asphalt concrete, etc. However, circulating aggregates obtained from waste concrete contain lime hydroxide or lime carbonate, so that moisture and water After prolonged contact, the leachate is strongly alkaline.

Therefore, secondary environmental pollution may occur due to leachate generated according to field conditions when using recycled aggregate.

Therefore, recently, the use of recycled aggregates having reduced alkalinity by adjusting the pH to below the standard value is mandatory, and in the future, regulations are expected to be strengthened so that it cannot be used for some applications such as road substrates.

For this reason, research on the processing technology of recycled aggregates has been conducted. Although a finish has been developed to protect and strengthen the surface of recycled aggregates and to prevent environmental pollution and improve quality, it is difficult to apply them. It is true.

For example, there is a method of coating the aggregate through the formation of a thin film and internal penetration of the surface using an organic solvent, but this method is due to a number of problems appearing in the mixing method, mixing viscosity, curing time, bonding strength of the actual aggregate It is not possible to mass produce them, and most of them adopt a non-productive method of direct immersion coating penetration.

Above all, since the organic solvent with high solubility is used in the production process, the harmful effects on the human body or the environment are serious when the produced aggregate is applied.

Thus, water-soluble compositions are being developed as finishing materials for recycled aggregates. However, since a large amount of emulsifiers must be used in water-soluble compositions, the water can contain only up to 20% of water, and in this case, a large amount is still required to satisfy workability and curing conditions. Organic solvents must be used, which is still limited in terms of environmental friendliness.

Therefore, the present invention was created in order to solve the above problems, circulating aggregate production apparatus capable of producing a large amount of circulating aggregates with reduced alkalinity to neutrality by using strong aggregates obtained from waste concrete such as construction wastes. The purpose is to provide.

In order to achieve the above object, the present invention is provided with a coating base on which aggregate is mounted, and an injector for injecting an aqueous epoxy coating agent on the aggregate on the coating base, and vibrating the coating base to spray and vibrate the coating. It provides a production apparatus for circulating aggregate using waste concrete comprising; coating device portion for penetrating, coating the coating agent on the surface of the aggregate while the aggregate and the coating agent is made.

In a preferred embodiment, the apparatus for producing circulating aggregate according to the present invention includes a perforated drum into which the aggregate obtained by crushing concrete is put, and a rotating device for rotating the perforated drum, and the perforated drum is rotated by the rotating device. A pre-treatment unit for discharging the fine powder present in the aggregate when injected through the hole of the perforated drum; further comprising, the aggregate discharged after the fine powder is removed from the perforated drum 121 is put on the coating pedestal 141 It is characterized by.

Here, the inside of the perforated drum is provided with a moving means for transferring the aggregate injected during rotation from one end of the inlet to the outlet of the other end, the moving means is configured to protrude a spiral protrusion along the spiral direction on the inner peripheral surface of the perforated drum Can be.

In addition, the pretreatment unit is preferably provided with a brushing device for brushing the fine powder by directly brushing the aggregate inside the perforated drum with a brush inserted into the perforated drum.

The pretreatment unit may further include a suction fan configured to suck a foreign substance scattered inside the perforated drum, and a suction discharge device configured to discharge a foreign substance sucked by the suction fan to the outside.

In addition, the coating pedestal is preferably installed in an inclined structure in which the input portion into which the aggregate is placed is higher than the discharge portion from which the aggregate is discharged so that the injected aggregate is moved and discharged by vibration.

In addition, the coating device preferably further comprises a chamber in which the coating pedestal and the spraying device are installed, and a heating device for maintaining the internal temperature of the chamber at a process temperature while forming a sealed inner space.

In addition, the apparatus for producing a circulating aggregate according to the present invention includes a rotating drum into which a circulating aggregate coated with a coating agent is injected from the coating pedestal of the coating apparatus, and a rotating device for rotating the rotating drum, and is introduced by rotating the rotating drum. It may be configured to further include a secondary mixing-drying device unit for performing a secondary mixing and drying process of the recycled aggregate.

In a preferred embodiment, the inside of the rotating drum may be provided with a moving means for transferring the recycled aggregate injected during rotation from one end of the inlet to the outlet of the other end, the moving means is a spiral protrusion along the spiral direction on the inner peripheral surface of the rotating drum It may be configured by forming a protrusion.

Accordingly, according to the circulating aggregate production device according to the present invention, it is possible to produce a large amount of circulating aggregate through a series of processes in which the aqueous epoxy coating is sprayed on the circulating aggregate, and the mixed aggregate and the coating agent are dried.

In particular, in the present invention, it is possible to penetrate and coat the water-based epoxy on the concrete coated surface of the aggregate in a simple process, so that it is possible to process the process quickly and to produce environmentally friendly recycled aggregates since it does not use the organic compounds that were used in the past. Of course, there is an advantage to reduce the production cost.

In addition, the circulating aggregate produced by the production apparatus of the present invention is a cyclic aggregate in which the alkali is reduced from strong alkali (pH 12 or higher) to neutral (pH 7 to 10) as epoxy is penetrated and coated on the surface. Secondary environmental pollution by alkali can be prevented, as well as workability and work stability can be improved when construction using aggregate.

In addition, the construction process is very short, but the workability can be further improved due to the low viscosity, and since the water of the aqueous epoxy stabilizes the exothermic reaction during the curing reaction, there is an advantage of minimizing the ammonia gas emitted by the curing reaction. The effect is very large.

In the present invention, by infiltrating and coating the epoxy resin on the surface of the aggregate, the surface of the internal tissue can be strengthened, and the recycled aggregate having excellent mechanical properties such as strength can be manufactured. The mechanical properties such as strength can also be improved over conventional levels.

In addition, the circulating aggregate produced by the present invention can be used for a variety of uses by enhancing the physical properties has an advantage of excellent economic efficiency, it is possible to greatly contribute to the insufficient aggregate supply.

In addition, the existing landfill-based aggregates can be expanded to produce eco-friendly green products, recycled products, and resource-resourced products such as ready-mixed concrete aggregates, secondary concrete products, asphalt concrete and recycled asphalt concrete.

1 is an overall configuration diagram showing a circulation aggregate production apparatus according to an embodiment of the present invention.
Figure 2 is a block diagram showing an aggregate injection device and a pretreatment unit in the present invention.
Figure 3 is a view showing a side plate and outlet of the perforated drum, the suction fan of the suction discharge device in the present invention.
Figure 4 is a view showing an embodiment in which a brush is installed in the perforated drum in the present invention.
Figure 5 is a block diagram showing a coating device in the present invention.
6A and 6B are views illustrating various examples of a state in which an injection apparatus of the coating apparatus is disposed in the present invention.
Figure 7 is a block diagram showing a secondary mixing-drying device unit in the present invention.
8 is a view showing a rotating drum of the secondary mixing-drying device unit in the present invention.
9 is a schematic view showing a manufacturing process of an aqueous epoxy coating agent.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

The present invention relates to a circulating aggregate production device, and relates to a circulating aggregate production device capable of producing a large amount of circulating aggregate having a strong alkalinity and reduced alkalinity by using aggregates obtained from waste concrete such as construction waste.

In particular, the present invention relates to a pH-reducing melt and composite recycled aggregate production technology using an aqueous epoxy, and to penetrate and coat an aqueous epoxy coating agent on the aggregate surface to finally produce a recycled aggregate having excellent physical properties and environmentally friendly, less manpower The present invention also relates to an apparatus and a method for producing a large amount of recycled aggregate.

The present inventors have disclosed Korean Patent Nos. 0932222, 0925850, 0989942 and the like with respect to the aqueous epoxy resin composition, and 100 parts by weight of the aqueous epoxy coating composition is pure water without using any emulsifier or surfactant. When penetrating and coating the concrete surface by mixing up to 10 to 1000 parts by weight, it is possible to obtain a concrete surface that is excellent in physical properties and environmentally friendly (reduces alkalinity, no organic solvent, etc.).

In order to apply the aqueous epoxy coating as a finishing material of the waste aggregate obtained by crushing the construction waste, a series of processes such as pretreatment of the aggregate, injection and mixing of aqueous epoxy, and drying are required.

In addition, there is a need for a device capable of producing recycled aggregates using an aqueous epoxy coating, and above all, a technique for mass-producing recycled aggregates with less manpower is needed.

The present inventors thus disclose an apparatus and method capable of producing large quantities of recycled aggregate using an aqueous epoxy coating.

1 is an overall configuration diagram showing a circulating aggregate production apparatus according to an embodiment of the present invention, Figure 2 is an aggregate input device 110 and pre-treatment unit 120 in the circulating aggregate production apparatus of the present invention shown in FIG. ) Shows a cross-sectional view of a part of the perforated drum 121 to show the internal structure of the perforated drum 121.

3 is a cross-sectional view taken from the rear end of the punching drum 121 as a view showing the horizontal plate 134 and the outlet 121c of the punching drum 121, the suction fan 132 of the suction discharge device in the present invention, 4 is a view showing an embodiment in which the brush 130 is installed in the perforated drum 121 in the present invention, showing the installation state of the brush 130 viewed from the front opening of the perforated drum 121.

In addition, Figure 5 is a block diagram showing the coating device portion 140 in the circulation aggregate production apparatus of the present invention shown in Figure 1, Figure 6a and Figure 6b is a spray device 142 of the coating device portion 140 in the present invention. It is a top view which shows the various examples of the state arrange | positioned.

In addition, Figure 7 is a block diagram showing a secondary mixing-drying unit 160 in the present invention, a cross-sectional view showing a part of the rotating drum 161, showing the internal structure of the rotating drum 161, Figure 8 Is a cross-sectional view taken from the rotating drum 161 of the secondary mixing-drying device unit 160 in the present invention.

As shown in FIG. 1, the circulating aggregate production device according to the present invention includes a pretreatment unit 120 and a pretreatment unit 120 that perform a pretreatment process for removing fine powder on the supplied aggregate 1. Spraying the aqueous epoxy coating on the discharged aggregate is made to include a coating device unit 140 for penetrating, coating the coating on the aggregate surface while the mixing of the aggregate and the aqueous epoxy coating is made.

First, the pretreatment unit 120 is a component that removes the fine powder present in the aggregate (1) injected by the aggregate input device 110, which moves the aggregate (1) by the rotation of the perforated drum 121 to be described later And while, while moving the aggregate (1) from the inlet (121b) of the drum front end to the outlet (121c) of the drum rear end through the perforated drum 121, to remove the fine powder adhering to the aggregate (1).

Here, the aggregate input device 110 is provided to supply and input the waste aggregate (1) (waste aggregate to be coated) to the pretreatment unit 120, which is obtained by screening waste concrete such as construction waste after crushing, When the aggregate 1 is placed on the conveyor belt may be a conveyor device for transporting it into the process.

In the present invention, the waste aggregate 1 having a size of 40 mm or less is first sorted and then supplied to the pretreatment unit through the conveyor apparatus 110.

The pretreatment process for the waste aggregate 1 performed in the pretreatment unit 120 is a process of separating and removing unnecessary small fine powder from the waste aggregate 1 having a size of 40 mm or less, which is primarily screened, and fine powder. Only the removed aggregate (1) can be referred to as a secondary sorting process sent to the coating process.

1 and 2, the pretreatment unit 120 that performs this is provided with an inlet 121b through which the aggregate 1 is introduced from the aggregate input device 110 at the front end (left end in FIG. 2). And a perforated drum 121 having a discharge hole 121c for discharging the aggregate 1 in a state where the fine powder is removed at the rear end (the right end in FIG. 2), and a rotating device 122 for rotating the perforated drum 121. And a moving means provided inside the perforated drum 121 to transfer the aggregate 1 injected through the inlet 121b of the perforated drum to the outlet 121c of the perforated drum when the perforated drum is rotated.

In the pretreatment unit 120, the lower side of the perforated drum 121 is discharged through the discharge tray 123 for collecting and discharging the fine powder discharged from the perforated drum, and the outlet 123a at the bottom of the differential tray 123 A fine powder discharging device 124 for discharging the fine powder may be installed, and a conveyor device may be used as the fine powder discharging device 124.

The perforated drum 121 is formed of a plurality of holes 121a through which only fine powders of a predetermined size or less can pass. The holes 121a are formed in a drum shape by drilling a metal plate and forming the holes 121a in a predetermined size. May be used.

Alternatively, the perforated drum 121 may be manufactured in the form of a net structure having a predetermined strength, that is, a perforated net (screen net) in order to maintain the drum shape, or by assembling members such as a lumber or a bar to form an outer skeleton of the drum shape. You can also make a frame and wrap it around the frame.

In addition, the perforated drum 121 is rotatably supported by the roller 126 is installed in the support 125 is disposed around the rotation for its rotation, the overall shape can be manufactured and used to have a cylindrical shape, and also a pretreatment device In the unit 120 may be installed to be horizontally arranged long.

The outlet side of the aggregate input device 110 so that the aggregate (1) carried by the aggregate input device 110 (for example, the conveyor device) is injected into the inlet (121b) of the perforated drum 121 (of the conveyor device) End) is connected, the outlet 121c of the perforated drum 121 is connected to the coating device 140.

In addition, the rotating device 122 includes an actuator for generating a rotational force for rotating the perforated drum 121, and a rotational force transmitting means 128 for transmitting the rotational force of the actuator to the rotational force input unit of the perforated drum 121 do.

Here, the actuator may be implemented by the electric motor 127, and the method of transmitting the rotational force of the electric motor 127 to the rotational force input of the punching drum 121, the chain transmission method, belt transmission method, roll drive method, and One of the gear transmission methods may be applied.

In the case of the chain transfer method, the drive sprocket 128a integrally installed at the drive shaft of the electric motor 127, the driven sprocket 128b integrally installed at the rotational force input portion of the punching drum 121, the drive sprocket 128a, A chain transfer mechanism is used that includes a chain 128c for connecting rotational force transfer between driven sprockets 128b.

1 and 2, it can be seen that the driven sprocket 128b in which the chain 128c is connected to the front end of the perforated drum in which the rotational force input part, that is, the inlet 121b is formed, is installed in the perforated drum 121. Can be.

Rotational force of the electric motor 127 transmitted through the driving sprocket 128a and the chain 128c by installing the driven sprocket 128b integrally with the punching drum at the front end portion (rotational power input unit) of the punching drum 121. As the driven sprocket 128b is rotated, the perforated drum 121 is rotated.

In addition, in the case of the belt transmission method, the rotational force input of the electric motor 127 is transmitted to the rotational force input unit of the punching drum 121, and the driving pulley integrally installed on the drive shaft of the electric motor 127 and the punching drum 12! A belt transfer mechanism including a driven pulley integrally installed in the rotational force input unit and a belt connecting the driving pulley and the driven pulley to enable rotational force transmission is used.

At this time, the driving pulley, the driven pulley, the belt may be used to form a tooth to prevent slip.

In addition, in the roll driving method, a method similar to the method of rotating the ready-mixed drum of the ready-mixed vehicle, the driving roll is integrally installed on the drive shaft of the electric motor 127 and the rotational force input of the punching drum 121 are integrally installed. A roll transfer mechanism including a driven roll circumscribed to the drive roll is used.

In the roll transfer mechanism, the rotational force of the driving roll is directly transmitted to the driven roll by the frictional force in the external state between the driving roll and the driven roll.

In the case of the gear transmission system, a gear transmission mechanism including a drive gear installed on the drive shaft of the electric motor 127 and a driven gear integrally installed with the rotation force input unit of the punching drum 121 and engaged with the drive gear is used.

In the gear transmission mechanism, the rotational force of the drive gear is directly transmitted to the driven gear in a state where the teeth of the drive gear and the driven gear are engaged.

In applying the chain transfer mechanism, belt transfer mechanism, roll transfer mechanism, or gear transfer mechanism, a separate circular circle is formed at the front end of the perforated drum 121 in which the rotational force input portion of the perforated drum 121 is formed, for example, the inlet 121b. The frame may be integrally installed, and a driven sprocket, a driven pulley, a driven roll, or a driven gear may be provided on the frame.

In addition, the moving means provided in the perforated drum 121 may be a spiral protrusion 129 continuously protruding along the spiral direction on the periphery of the perforated drum 121, and when the perforated drum 121 is rotated, As the spiral protrusion 129 of the inner circumferential surface is rotated, the aggregate 1 injected through the front end inlet 121b is pushed toward the rear end outlet 121c.

As described above, in the perforated drum 121, the aggregate 1 injected into the inlet 121b can be moved backward by pushing the aggregate 1 while the spiral protrusion 129 is rotated, and then the outlet 121c of the rear end. Aggregate 1 moved to be able to be injected into the coating device 140.

Aggregate (1) injected into the perforated drum 121 is moved up and down while the perforated drum is rotated to move repeatedly, the fine powder is mixed in the aggregate or attached to the aggregate surface in the aggregate is moved backward After being discharged to the outside through the hole (121a) of the perforated drum.

In addition to the method of brushing the fine powder while moving the aggregate 1 in the perforated drum 121 as described above, a brushing device for brushing the fine powder by brushing the aggregate in the perforated drum may be added.

The brushing device may be configured to include a brush (130) for brushing the aggregate (1) is installed to be inserted into the perforated drum 121, the brush 130 is installed in Figure 4 Illustrated by way of example.

The brush 130 is fixed to the support means (not shown) outside the perforated drum in a state of being inserted into the perforated drum 121 to be rotated, or a separate rotating device fixedly installed outside the perforated drum ( (Not shown) may be installed to rotate in the opposite direction to the perforated drum 121 by the rotary device, and rub the fine powder while directly rubbing the aggregate surface.

Preferably, the brush 130 is to be rotated in the reverse direction by the rotating device, the rotation device may be configured to include an electric motor for rotating the brush 130 in the reverse direction.

In the case of the fixed type, the brush 130 is inserted into the perforated drum from the front end inlet 121b of the perforated drum 121, and a fixed structure such as a support shaft outside the perforated drum with a brush axis (not shown) (Not shown) is installed integrally fixed via a support means (not shown) such as a bracket.

In addition, in the rotary configuration in which the brush 130 is rotated in the reverse direction, an electric motor (not shown) (or a shroud in which the motor is fixed) is fixed to the support means, and the end of the brush shaft is fixed to the drive shaft of the electric motor. Connected integrally, the brush is rotated in reverse direction when the electric motor is driven to rotate.

Accordingly, when the electric motor is driven, the brush 130 rotates in the reverse direction with the perforated drum in the perforated drum 121 to shake off the fine powder deposited on the aggregate surface, and is separated from the aggregate 1 by the brush 130. The fine powder is discharged to the fine powder receiver 123 through the hole 121a of the perforated drum 121.

In this way, when the brushing device is added, the fine powder remaining in the aggregate 1 can be more completely removed.

In addition, in a preferred embodiment of the present invention, the pretreatment unit 120 as described above further comprises a suction discharge device 131 for externally discharging foreign matters such as dust and flammable substances in the perforated drum 121. Can be.

The suction discharging device 131 is installed at the rear end outlet 121c of the perforated drum 121 and the electric suction fan 132 for suctioning the foreign substances scattered inside the perforated drum 121 with air, and the suction fan ( It is configured to include a discharge duct 133 for discharging the foreign matter sucked by the 132 to the outside with the air.

Here, a horizontal plate 134 is installed at the rear end outlet 121c of the perforated drum 121, and the horizontal plate 134 is provided with a plurality of fixed bars 135 extending inwardly from the perforated drum 121. It is fixed and installed by).

At this time, the space between the perforated drum 121 and the horizontal plate 134, and the space between the fixed bar 135 and the fixed bar aggregate (1), that is, the aggregate (1) from which the fine powder is removed, the perforated drum ( 121 is a discharge port 121c which is a space discharged from the coating apparatus unit 140.

In addition, the suction plate 134a is formed at the position where the suction fan 132 is installed in the side plate 134, and foreign substances scattered in the perforated drum 121 through the suction hole 134a when the suction fan 132 is driven. This can be inhaled and discharged.

As the suction fan 132, a conventional electric fan including an electric motor may be used, and a shroud for fixing the motor and protecting the fan is fixed to the inlet of the discharge duct 133 so that The position is fixed.

The discharge duct 133 is fixedly installed by a support means (not shown) such as a bracket to a support or a separate fixed structure (not shown) of the outside.

On the other hand, the coating unit 140 is supplied with the aggregate (1) through the pretreatment process (removing fine particles and scattered foreign matter (dust, etc.)) from the pretreatment unit 120, spraying, infiltrating and injecting an aqueous epoxy coating on the aggregate surface As a component for performing a coating process to coat, it also serves to evenly mix the aggregate with the sprayed coating.

Looking at the configuration, the coating device unit 140, as shown in Figure 5, the coating pedestal 141 is injected into the aggregate from the pretreatment unit 120, and the liquid injected into the aggregate put into the coating pedestal 141 And an injector 142 for spraying the aqueous epoxy coating.

In addition, the coating device unit 140 allows the aggregate injected into the coating pedestal 141 and the aqueous epoxy coating sprayed from the injector 142 to be mixed smoothly, while the aggregate 1 is added to the coating pedestal 141. It includes a vibrating device 145 for vibrating the coating pedestal 141 to be moved from the portion to the discharge portion (to be smoothly moved in the coating pedestal of the inclined structure as described later).

In addition, the coating device unit 140 may further include a chamber 146 to form a closed inner space, the coating pedestal 141 and the spray device 142, the vibration device ( 145 may be installed.

In addition, the coating device unit 140 includes a heating device 147 that maintains the temperature inside the chamber 146 at a predetermined process temperature, and the heating device 147 is also installed inside the chamber 146.

In more detail with respect to each component of the coating device unit 140, first coating base 141 is the aggregate (1) discharged from the perforated drum 121 of the pretreatment unit 120, the aggregate, The coating is mixed evenly with the aqueous epoxy coating sprayed from the injector 142 on the coating pedestal 141.

In a preferred embodiment, the coating pedestal 141 is positioned higher than the discharge portion in which the aggregate is injected into the aggregate so that the aggregate injected to one side in the pretreatment unit 120 is moved by the vibration to be discharged to the other side. Are arranged in an inclined structure.

That is, the coating support 141 is disposed to be inclined downward while going backward, so that the aggregate injected thereon can be automatically moved in the inclined direction by the vibration applied to the coating support 141.

In addition, the coating support 141 is installed to be supported by the buffer spring (144a) in the support 152 of the coating device unit 140, while one side is supported by the buffer spring (144a) the other side by the bracket (144b) It is rotatably supported.

Referring to FIG. 5, it can be seen that the inlet portion of the coating pedestal 141 positioned relatively high is supported by the buffer spring 144a, and the outlet side positioned lower is supported by the bracket 144b. .

The injector 142 is configured to receive an aqueous epoxy coating from an external storage unit (storage tank, etc.) (not shown) and to spray the aggregate onto the coating pedestal in the chamber 146 of the coating unit 140. As a part, the chamber 146 is fixedly disposed above the coating pedestal 141.

In the present invention, a single or a plurality of injectors 142 may be installed in the chamber 146 of the coating apparatus unit 140, wherein each injector 142 has a plurality of injection nozzles in which an aqueous epoxy coating is injected downward. It has a structure having 142a.

In addition, when a plurality of injection apparatuses 142 are installed, they may be installed in a single row along the longitudinal direction of the coating pedestal 141 or in a plurality of rows as shown in FIG. 6B, as shown in FIG. 6A.

In the present invention, the aqueous epoxy coating sprayed through the injector 142, as shown in Figure 9 may be prepared by mixing the subject and the curing agent first stirring, and then adding water and then stirring the secondary. And, the aqueous epoxy coating thus prepared is supplied to the injector 142 and used to coat the aggregate.

Of course, in order to supply and spray the aqueous epoxy coating through the sprayer 142, the coating agent supply line 143, such as a hose or pipe, must be connected to the sprayer 142 in the reservoir in which the coating agent is stored.

In addition, to the coating supply line 143 or coating storage unit, a valve means (not shown) for intermittent supply of the coating agent, a pumping means (not shown) for pumping and supplying the coating agent, adjusting the supply amount and injection amount of the coating agent Flow control means for (not shown) and the like can be installed.

As a result, in the coating device unit 140, the aqueous epoxy coating is sprayed on the aggregate on the coating pedestal 141 and the aggregates are mixed evenly while flowing in an inclined direction on the coating pedestal 141, and the aggregate is mixed with the aggregate. The coating may be evenly penetrated and coated on the surface.

The vibrator 145 is a component that shakes the coating support 141 so that the aggregate is automatically moved from the input unit to the discharge unit, and at the same time the coating agent sprayed from the injector 142 is evenly deposited on the surface of the aggregate. On the pedestal 141 will lead to smooth mixing of the aggregate and the coating.

In the present invention, the coating pedestal 141 is preferably maintained in the inclination angle range of 5 ° to 15 ° horizontal reference, even if vibrated by the vibrator 145, less than 5 ° problem that the movement and mixing of the aggregate is not smooth Will be.

In addition, when the aggregate exceeds 15 °, the aggregate passes through the coating pedestal 141 too quickly, so that a sufficient amount of the coating agent may not be mixed in the aggregate, and the coating agent may not evenly adhere to the aggregate.

In a preferred embodiment, the vibration device 145, an electric motor 148 to be a driving actuator, a rotating body 149 rotated by the rotational force of the electric motor 148, and one end of the rotating body ( It may be configured to include a connecting rod 151 hinged eccentrically to the rotation center of the 149 and the other end is rotatably hinged to the coating pedestal 141.

The electric motor 148 is fixedly installed on the support 152 provided below the coating support 141 in the coating device unit 140, the rotor 149 is a separate bracket 153 installed on the support 152 It is installed to be coupled to the rotatable.

The rotary body 149 is to receive the rotational force of the electric motor 148 through a belt or a chain, for example, a drive pulley or a drive sprocket is installed on the drive shaft of the electric motor 148, the rotation body 149 ) May be a driven pulley or driven sprocket to which a belt or chain is connected.

Here, the belt or chain is connected between the drive pulley or the drive sprocket and the rotating body to transfer the rotational force of the electric motor 148, so that the rotating body 149 can be rotated by the driving of the electric motor 148. .

Alternatively, a separate driven pulley or driven sprocket which is integrally rotated on the rotating body 149 may be installed, and the driving pulley or the driving sprocket may be connected with a belt or a chain.

The connecting rod 151 is rotatable in one end is rotatably coupled to a portion eccentric from the center of rotation in the rotating body 149 and the other end rotatably hinged to the coating pedestal 141, the rotating body ( When the 149 is rotated, the connecting rod 151 moves up and down to vibrate the coating pedestal 141.

Since the coating pedestal 141 is supported by the buffer spring 144a, when the connecting rod 151 moves up and down, compression / tension of the buffer spring 144a is repeated, causing the coating pedestal 141 to vibrate.

In addition, the heating device 147 in the coating device unit 140 is a component that maintains the temperature inside the chamber 146 at a process temperature, and the inside of the chamber 146 is a space in which an aqueous epoxy coating is sprayed and mixed with the aggregate. Therefore, in order to smoothly spray, disperse, and mix the coating agent, it is necessary to maintain the temperature inside the chamber 146 at an appropriate temperature.

In particular, it is necessary to heat the inside of the chamber 146 to an appropriate temperature because it is difficult to spray the aqueous epoxy coating in the injector 142 in a low temperature, such as winter.

Therefore, a heating device 147 for properly heating the inside of the chamber 146 is installed, and in the embodiment of the present invention, the heating device 147 of the hot air method may be applied.

The hot air heating device 147 is a hot wire coil 155 for supplying heat into the chamber 146, and a blower for blowing air to be supplied into the chamber 146 through the hot wire coil 155 It may be a configuration including a fan 156.

Also preferably, the heating device 147 may further include a temperature detector (not shown) that detects a temperature inside the chamber 146 for its operation and automatic control of temperature maintenance in the chamber 146. Can be.

At this time, based on the temperature value detected by the temperature detector in the control panel (not shown), the heating coil 155 and the blowing fan 156 may be used to maintain the temperature inside the chamber 146 within a preset temperature range. Automatic control of operation.

The temperature inside the chamber 146 is preferably maintained at a temperature of 20 to 100 ° C. during the process, and more preferably, the temperature inside the chamber 146 is maintained at a temperature of 20 to 30 ° C. during the process. .

When the temperature inside the chamber 146 is maintained in the above-described temperature range, smooth coating and dispersion of the coating agent are possible, and workability is improved.

In addition, only by maintaining the above temperature range, proper moisture drying is possible, and the coating can be smoothly penetrated and coated onto the aggregate surface as well as to facilitate the penetration of the coating agent.

In addition, as a maintenance, it is also possible to provide a separate injection device 142 to remove the remaining substances by injecting air or water in the chamber 146 of the coating device unit 140.

Next, the circulating aggregate production device of the present invention may further comprise a secondary mixing-drying device unit 160 as a device for performing a subsequent process of the coating device unit 140.

The secondary mixing-drying device unit 160 is completed after the coating process in the coating unit 140, the circulation aggregate discharged from the coating support 141, that is, the aqueous epoxy is penetrated to the surface, the coated circulation aggregate is added As a component for performing secondary mixing and drying in a furnace, it has a configuration similar to that of the pretreatment unit 120.

However, unlike the punching drum 121 having the function of removing the fine powder, in the secondary mixing-drying device unit 160, since the drum is simply mixed-drying, the drum is not formed (not perforated) rotating drum ( There is a difference in that 161 is used.

The rotating drum 161 may also be a cylindrical drum formed with an inlet 161a into which the circulating aggregate is introduced at the front end and an outlet 161b through which the circulating aggregate is discharged after the mixing-drying at the rear end.

Aggregate discharged from the coating pedestal 141 of the coating device unit 140 is injected into the inlet 161a, and the injected aggregate passes through the inside of the rotating drum 161 and is discharged through the outlet 161b.

The rotating drum 161 is rotated to mix the aggregate injected into the inside and move backward. As shown in FIG. 7, the inner peripheral surface of the rotating drum 161, as a moving means for moving the aggregate, in a spiral direction A spiral protrusion 162 is formed to protrude continuously along.

The spiral protrusion 162 may be formed in plural, and when the rotating drum 161 is rotated, the aggregate injected through the front end of the opening 161a is rotated while the spiral protrusion 162 of the inner circumferential surface thereof rotates. Pushed toward).

The rotating drum 161 is rotatably supported by a roller in the support of the secondary mixing-drying device unit 160 (see FIG. 8), and the rotating device 163 for rotating the rotating drum 161. And, the configuration of the rotational force transmission means for transmitting the rotational force to the rotary drum 161 when the electric motor drive of the rotary device 163 is not different from that of the pretreatment unit 120.

In addition, the rotational force input unit in which the rotational force of the electric motor is finally transmitted from the rotational drum 161 for rotation of the rotational drum 161 may be formed at the front and rear ends of the rotational drum 161, respectively, At this time, the rotating device 163 and the rotational force transmission means may be disposed before and after the rotation drum 161 so that the rotational force is input to the rotational force input unit at the front and rear ends, respectively.

As a result, the aggregate injected into the rotating drum 161 is subjected to an additional secondary mixing and drying process, in which the aqueous epoxy can be more evenly buried in the aggregate.

Circulating aggregate discharged through the outlet 161b of the rotating drum 161 is moved to the aggregate discharging device 170, for example, the conveyor device 170 disposed on the discharge port 161b side of the rotating drum 161 to the outside Allow to be taken out.

As described above, the recycling aggregate production apparatus according to the present invention has been described. Referring to the process of manufacturing the recycling aggregate using the following, it will be described below.

In the manufacturing method of the circulating aggregate according to the present invention, the aggregate 1 is injected into the perforated drum 121 of the pretreatment unit 120, and the aggregate is injected while the perforated drum 121 is rotated by the rotating device 122. A pretreatment step in which the fine powder present in (1) is discharged and removed through the holes 121a of the perforated drum 121; The aggregate 1 from which the fine powder is removed from the perforated drum 121 is introduced into the coating pedestal 141 of the coating device unit 140, and an aqueous epoxy coating agent is applied to the aggregate on the coating pedestal 141 from the spraying device 142. Is sprayed, and the coating support 141 is vibrated by the vibrator 145, the mixing of the aggregate and the coating is made at the same time includes a coating process in which the coating is penetrated, coated on the aggregate surface.

In the pretreatment process, the aggregate 1 injected through the inlet 121b of one end of the perforated drum 121 is discharged at the other end of the perforated drum by the spiral protrusion 129 inside the perforated drum when the perforated drum 121 is rotated. Moving to (121c) is to pass through the interior of the perforated drum 121, the fine powder present in the aggregate is removed while the aggregate (1) passes through the inside of the perforated drum (121).

In addition, in the pretreatment process, the aggregate 1 is introduced into the perforated drum 121 by the conveyor apparatus 110, and the aggregate is introduced into the perforated drum 121 by the conveyor apparatus 110 during the pretreatment process, and the perforated drum. Aggregate movement in the interior 121 and the discharge of the aggregate to the coating device 140 is made continuously.

In addition, the brushing device is driven in the pretreatment process to brush off the fine powder by directly brushing the aggregate 1 with the brush 130 inserted into the perforated drum 121, and also driving the suction discharge device 131 to punch the perforated drum. The foreign substances scattered inside the 121 are sucked into the suction fan 132 and then discharged to the outside through the discharge duct 133.

In addition, the temperature inside the chamber 146 of the coating device unit 140 is maintained at the process temperature by the heating device 147 during the coating process.

In addition, in the coating process, the circulating aggregate coated with the coating is introduced into the secondary mixing-drying process. In the secondary mixing-drying process, the circulating aggregate from the coating pedestal 141 rotates the drum of the secondary mixing-drying unit 160. 161, the circulating aggregate is injected into the rotary drum 161 by the rotary device 163 is secondary mixing and drying.

Aggregate introduced through the inlet 161a at one end of the rotating drum 161 during the secondary mixing-drying process is discharged from the other end of the rotating drum by the spiral protrusion 162 inside the rotating drum when the rotating drum 161 is rotated. Go to (161b) and pass through the inside of the rotating drum, after the secondary mixing and dried aggregate in the rotating drum 161 is moved to the conveyor device 170 disposed on the outlet (161b) side of the rotating drum outside Is exported.

The embodiments of the present invention have been described in detail above, but the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are provided. Also included in the scope of the present invention.

1: aggregate 110: aggregate input device
120: pretreatment unit 121: punching drum
121a: hole 121b: inlet
121c: outlet 122: rotating device
123: differential collection 123a: outlet
124: differential discharging device 125: support
126: roller 127: electric motor
128: rotational force transmission means 128a: drive sprocket
128b: driven sprocket 128c: chain
129: spiral protrusion 131: suction discharge device
132: suction fan 133: discharge duct
134: side plate 134a: suction port
135: fixing bar 140: coating device
141: coating support 142: spraying device
142a: injection nozzle 143: coating material supply line
144a: buffer spring 144b: bracket
145: vibrator 146: chamber
147: heating device 148: electric motor
149: rotating body 151: connecting rod
152: support 153: bracket
155: hot coil 156: blowing fan
160: secondary mixing-drying unit unit 161: rotating drum
161a: inlet 161b: outlet
162: spiral protrusion 163: rotating device
170: aggregate discharge device

Claims (23)

delete A coating pedestal 141 on which the aggregate 1 is mounted, and an injector 142 for spraying an aqueous epoxy coating agent on the aggregate 1 on the coating pedestal 141, and vibrating the coating pedestal 141. In the production apparatus of the recycled aggregate using waste concrete comprising a coating device 140 for penetrating and coating the coating agent on the surface of the aggregate while the mixing of the aggregate (1) and the coating by spraying and vibration of the coating agent is made,
A perforated drum 121 into which the aggregate 1 obtained by crushing concrete is introduced, and a rotating device 122 for rotating the perforated drum 121, and the perforated drum 121 is driven by the rotating device 122. Further comprising; a pre-treatment unit 120 for discharging and removing the fine powder present in the aggregate (1) injected when rotated through the hole (121a) of the perforated drum 121,
Aggregate discharged after the fine powder is removed from the perforated drum 121, the apparatus for producing circulating aggregate using waste concrete, characterized in that it is placed on the coating pedestal (141).
The method according to claim 2,
The perforated drum 121 is formed with an inlet 121b into which the aggregate 1 is input at one end, and an outlet 121c through which the aggregate 1 in a state where fine powder is removed at the other end is formed, respectively, and a pretreatment unit part. Apparatus for producing circulating aggregate using waste concrete, characterized in that rotatably supported by a roller 126 installed on the support (125) of (120).
The method according to claim 2 or 3,
Production of the circulating aggregate using waste concrete, characterized in that the inside of the perforated drum 121 is provided with a moving means for transferring the aggregate 1 injected during rotation from one end of the inlet 121b to the outlet 121c of the other end. Device.
The method of claim 4,
The moving means is a device for producing circulating aggregate using waste concrete, characterized in that the protrusion is formed to form a spiral protrusion 129 along the spiral direction on the inner peripheral surface of the perforated drum (121).
The method according to claim 2,
On the lower side of the perforated drum 121, the finely divided tray 123 for collecting and discharging the fine powder discharged from the perforated drum 121, and the fine powder discharged through the outlet 123a at the bottom of the differential tray 123 to the outside. Apparatus for producing circulating aggregate using waste concrete, characterized in that the conveyor device for carrying out (124) is installed.
The method according to claim 2,
The rotating device 122 is an electric motor 127 for providing a rotational force, a chain transmission method, a belt transmission method, a roll driving method, which transmits the rotational force of the electric motor 127 to the rotational force input unit of the punching drum 121, And a rotational force transmission means (128) selected from the gear transmission method. The apparatus for producing circulating aggregate using waste concrete, characterized in that it comprises a.
The method according to claim 2,
The pretreatment unit 120 is further provided with a brushing device for brushing the fine powder by directly brushing the aggregate (1) in the perforated drum 121 with a brush 130 inserted into the perforated drum 121 is further installed. Apparatus for producing recycled aggregates using waste concrete.
The method according to claim 8,
The brush 130 is a waste concrete, characterized in that the brush shaft is connected to the electric motor fixedly installed outside the punching drum 121 is rotated in the opposite direction to the punching drum 121 by the drive of the electric motor. Production apparatus of used recycled aggregate.
The method according to claim 2,
The pretreatment unit 120 is a suction fan 132 for sucking the foreign matter scattered in the perforated drum 121 and the discharge duct 133 for discharging the foreign matter sucked by the suction fan 132 to the outside. The apparatus for producing circulating aggregate using waste concrete, characterized in that it further comprises a suction discharge device 131 is configured.
The method according to claim 10,
A horizontal plate 134 supported by the plurality of fixing bars 135 is installed at the rear end outlet 121c of the punching drum 121 so that the space between the fixing bar 135 and the fixing bar 135 is aggregate 1. Is a discharge port 121c discharged to the coating device unit 140, the suction port 134a is formed in the horizontal plate 134, the inside of the perforated drum 121 through the suction port 134a when the suction fan 132 is driven Apparatus for producing circulating aggregate using waste concrete, characterized in that the foreign substance of the suction.
The method according to claim 2,
The coating support 141 is recycled aggregate using waste concrete, characterized in that the input unit is installed in the inclined structure is positioned higher than the discharge portion discharged aggregate so that the input aggregate is moved and discharged by vibration. Production device.
The method of claim 12,
The coating pedestal (141) is a production apparatus for circulating aggregate using waste concrete, characterized in that arranged in the inclination angle range of 5 ° ~ 15 ° horizontal reference.
The method according to claim 13,
The coating pedestal (141) is one side is supported by the buffer spring (144a) while the other side is supported by the bracket (144b) rotatable production apparatus for circulating aggregate using the waste concrete, characterized in that rotatably supported.
The method according to claim 2,
The coating device unit 140 is a production apparatus of the recycled aggregate using the waste concrete, characterized in that it comprises a vibration device 145 for vibrating the coating pedestal 141
The method according to claim 15,
The vibration device 145 is connected to the electric motor 148, the rotating body 149 is rotated by receiving the rotational force of the electric motor 148, one end is eccentric to the rotation center of the rotating body 149 And the other end of the connecting rod 151 hinged to the coating pedestal (141), characterized in that it comprises a device for producing recycled aggregate using waste concrete, characterized in that it comprises a.
A coating pedestal 141 on which the aggregate 1 is mounted, and an injector 142 for spraying an aqueous epoxy coating agent on the aggregate 1 on the coating pedestal 141, and vibrating the coating pedestal 141. In the production apparatus of the recycled aggregate using waste concrete comprising a coating device 140 for penetrating and coating the coating agent on the surface of the aggregate while the mixing of the aggregate (1) and the coating by spraying and vibration of the coating agent is made,
The coating device 140 has a chamber 146 in which the coating pedestal 141 and the spraying device 142 are installed while forming a closed inner space, and the internal temperature of the chamber 146 as a process temperature. Apparatus for producing circulating aggregate using waste concrete, characterized in that it further comprises a heating device for maintaining.
18. The method of claim 17,
The heating device 147 is a hot wire coil 155 for supplying heat into the chamber 146, and a blowing fan 156 for blowing air to be supplied into the chamber 146 through the hot wire coil 155. Apparatus for producing circulating aggregate using waste concrete, characterized in that the heating device of the hot air method comprising a).
The method according to claim 18,
The heating device 147 further comprises a temperature detector for detecting the internal temperature of the chamber 146, the process of setting the internal temperature of the chamber 146 based on the temperature value detected by the temperature detector in the control panel Apparatus for producing circulating aggregate using waste concrete, characterized in that the automatic control of the operation of the heating coil (155) and the blowing fan (156) to be maintained in the temperature range.
A coating pedestal 141 on which the aggregate 1 is mounted, and an injector 142 for spraying an aqueous epoxy coating agent on the aggregate 1 on the coating pedestal 141, and vibrating the coating pedestal 141. In the production apparatus of the recycled aggregate using waste concrete comprising a coating device 140 for penetrating and coating the coating agent on the surface of the aggregate while the mixing of the aggregate (1) and the coating by spraying and vibration of the coating agent is made,
A rotating drum 161 to which the circulation aggregate coated with the coating agent is injected from the coating pedestal 141 of the coating device unit 140, and a rotating device 163 for rotating the rotating drum 161, and a rotating drum. Apparatus for producing circulating aggregate using waste concrete, characterized in that it further comprises a secondary mixing-drying unit 160 for performing the secondary mixing and drying process of the recycled aggregate injected by rotating (161).
The method of claim 20,
The rotary drum 161 is formed with an inlet 161a into which circulating aggregate is input at one end, and an outlet 161b for discharging the aggregate after completing the secondary mixing and drying process at the other end, respectively, and a secondary mixing-drying device unit. Apparatus for producing circulating aggregate using waste concrete, characterized in that rotatably supported by a roller installed on the support of the 160.
The method according to claim 20 or 21,
The inside of the rotating drum 161 is a production device for circulating aggregates using waste concrete, characterized in that the movement means for transferring the circulating aggregate introduced during rotation from one end of the inlet (161a) to the other end of the outlet (161b).
The method according to claim 22,
The moving means is a production apparatus for circulating aggregate using waste concrete, characterized in that formed by projecting the spiral protrusion 162 along the spiral direction on the inner peripheral surface of the rotating drum (161).

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