KR101226909B1 - Separate device for recycling sand - Google Patents

Abstract

PURPOSE: Recycled concrete aggregate manufacturing equipment using an indirect heating method by thermal media is provided to apply indirect heat generated from thermal media to waste concrete moving along a screw and at the same time to peel off paste and remove moisture by allowing the waste concrete to bump against each other due to the high speed rotation of the screw. CONSTITUTION: Recycled concrete aggregate manufacturing equipment using indirect heating method by thermal media include a tank(10), a feeding valve(20), a first conveying route(31), a second conveying route(32), a third conveying route(33), fine powder discharge pipes(61,62,63), and a vibrating screen(80). The tank stores the waste concrete processed with separation, selection, and crushing. The feeding valve is installed at the lower part of the tank to allow the tank to supply a fixed amount of the waste concrete for conveying. Along the first conveying route, the waste concrete discharged by the feeding valve is fed through a feeding hole(30) and conveyed by a screw(40), and the paste thereof is peeled off. The second conveying route is connected to the end of the first conveying route and equipped with a screw inside and a pipe(100) which contains a thermal medium(50) and is helically formed at the outer circumferential surface. The third conveying route is connected to the end of the second conveying route and equipped with a screw inside. The fine powder discharge pipes discharge the paste peeled off by friction during the conveying of the waste concrete, and the fine powder below standard at the end of the first, second, and third conveying routes. The vibrating screen is connected to a discharge pipe(70) formed on the end of the third conveying route, and selects aggregates.

Description

Circulating aggregate production device for concrete using indirect heating by heat medium {Separate device for recycling sand}

The present invention relates to an apparatus for producing circulating aggregate for concrete using an indirect heating method using a heat medium, and more preferably, rubbed concrete that has undergone separation, sorting, and crushing of waste concrete among construction wastes generated at various construction sites. In addition to the use of charlie and impact, the indirect heating by heat generated from the heat medium (water, steam, etc.) removes moisture that has soaked in the waste concrete and at the same time completely removes the paste to provide concrete aggregates that can be used in concrete products. It is to produce.

Patent Application No. 10-2005-0056065 The high-purity recycled aggregate production method of construction waste using high temperature heating uses a burner to heat the high temperature furnace so that heat of 400 ° C to 800 ° C is generated. causing the carbon dioxide (CO ₂₎ occurs, and therefore the flame in direct contact with aggregates, indirect use cheap industrial electrical and thermal oil as compared to relative to the aggregate stability is poor there is inadequate problems in mass production high fuel consumption, fix it The heating method is adopted to reduce the production cost.

In addition, the conveyor is installed inside the heating furnace has a problem that the life of the conveyor does not last long due to the high temperature.

In addition, since waste concrete is transported on the conveyor heated in the furnace, heat is not directly heated evenly on the waste concrete, and only one side of the waste concrete is directly heated. Therefore, it is not possible to completely remove the moisture, thereby reducing the strength of the waste concrete. will be.

The present invention was created in order to solve the above problems, by inputting the waste concrete, which has undergone the process of separating, sorting and crushing the waste concrete from the construction wastes generated at various construction sites, into the inlet of the transfer path for transferring by screw It aims to apply the indirect heat generated from the heat medium to the waste concrete conveyed along the screw, and at the same time, the scrap concrete collides with each other by the high speed rotation of the scquet, so that the paste is peeled off by friction and impact and water is removed. .

In addition, the present invention is installed by connecting the transfer path in multiple stages, by elongating the transfer path for the waste concrete is transported waste concrete indirectly heated by the heat medium, as well as water removal in the process of being bumped together by friction and impact The purpose is to allow the paste to peel completely.

In addition, an object of the present invention is to make the transfer and peeling at the same time through the transfer path to the waste concrete received indirect heat generated from the heat medium.

And when the conveyance along the conveyance path is peeled paste is discharged from the end of the conveyance path to the purpose.

Referring to the configuration of the present invention having the above object in detail based on the accompanying drawings as follows.

As shown in FIG. 1, the present invention includes a tank 10 for storing waste concrete that has been separated, sorted, and crushed;

Feeding valve 20 mounted on the lower portion of the tank 10 for supplying and transporting a predetermined amount of waste concrete from the tank 10,

Primary conveying path 31 which is capable of peeling the paste while the waste concrete discharged by the feeding valve 20 is introduced through the inlet 30 to be transported by the screw 40,

A secondary transport path connected to an end of the primary transport path and equipped with a screw 40 therein, and a spirally mounted pipe 100 embedded with a heat medium 50 on an outer circumferential surface thereof;

A third transfer path 33 connected to an end of the secondary transfer path 32 and equipped with a screw 40 therein;

Differentiated discharge pipe 61 installed to discharge paste and fine powder separated by friction while waste concrete is transferred to the end sides of the primary and secondary tertiary feed paths 31, 32 and 33 ( 62) (63).

It is characterized in that it comprises a vibration screen 80 is connected to the discharge pipe 70 formed at the end of the tertiary transport path 33 to screen the aggregate.

In addition, the primary conveying path 31, the secondary conveying path 32, the third conveying path 33 according to the present invention is characterized in that it is configured in a multi-stage by connecting in a zigzag at the end.

In addition, the discharge pipe 70 installed at the end of the inlet 30 according to the present invention is characterized in that the water nozzle 80 is configured to remove the scattering dust generated by the discharged waste concrete is discharged.

The present invention configured as described above by heating the indirect heat generated from the heat medium evenly to the waste concrete by mounting a pipe with a heat medium embedded in the outer circumferential surface of the transfer path for conveying the waste concrete through the separation, sorting, crushing process with a screw While completely removing the moisture permeated into the waste concrete, while colliding with each other in the process of transporting, there is an effect that can completely peel off the paste attached to the surface of the waste concrete by friction and shooting.

1 is a schematic diagram schematically showing the configuration of a circulating aggregate production device for concrete according to the present invention.
2 is a cross-sectional view showing a state in which the heat medium is mounted on the outer circumferential surface of the transfer path according to the present invention.

Hereinafter, the configuration of the apparatus for producing circulating aggregate for concrete using indirect heating by heat medium according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the present invention constitutes a tank 10 for storing waste concrete that has undergone separation, sorting, and crushing of waste concrete among construction wastes generated at various construction sites, and has a lower portion of the tank 10. The primary transport path 31 for transferring the waste concrete to the screw 40 is installed in order to peel the paste attached to the waste concrete.

At this time, the primary transport path 31 is connected to the secondary transport path 32 to be transported by falling from the end, and the third transport path 33 to be transported by dropping to the end of the secondary transport path (32) ) Is composed of multi-stage zigzag shape.

At this time, the feeding valve 20 for discharging the waste concrete stored in the tank 10 to the primary transport path 31 by a predetermined amount between the tank 10 and the inlet 30 of the primary transport path 31. It is composed.

In addition, the screw 40 has a built-in horizontally formed primary transport path 31 has a predetermined length, falls from the end of the primary transport path 31 to the screw to transport the waste concrete again ( A secondary conveying path 32 having a built-in 40 is formed, and a tertiary conveying path having a screw 40 embedded therein so as to fall from the end of the secondary conveying path 32 and transfer the waste concrete again. 33 is configured.

In addition, when the primary transport path 31 serves to remove the paste adhered to the waste concrete by friction and impact, the secondary transport path 32 is transported secondary to the waste concrete transported by the screw Indirect heat is applied to the heat medium 50 installed on the outer circumferential surface of the furnace 32 to remove the moisture in the cement adhering to the aggregate by the indirect heat, and the tertiary transfer path 33 uses waste concrete to remove the pasted paste. It is to remove from the to get a good recycled aggregate.

In addition, the water nozzle 90 is configured in the discharge pipe 70 connected to the tertiary transfer path 33 to remove the scattering dust generated when the waste concrete from which the paste is peeled is discharged to the discharge pipe 70.

As described above, the power of the motor is disposed in the lower portion of the discharge pipe 70 to sort waste concrete discharged by peeling the paste while being transported through the primary, secondary, and tertiary transport paths 31, 32, 33. The vibration screen 80 is configured to receive the vibration 130 is configured.

In addition, the paste and the standard separated from the surface of the waste concrete by friction while being transferred through the screw 40 to the end of the primary transfer path 31, secondary transfer path 32, tertiary transfer path 33 In order to collect the following differentials, the first differential discharge pipe 61 is disposed at the end of the primary transfer path 31, the secondary differential discharge pipe 62 is disposed at the end of the secondary transfer path 32, and the third transfer path ( The tertiary differential discharge pipe 63 is connected to the end of 33). At this time, the primary, secondary, and tertiary differential discharge pipes 61, 62 and 63 are integrally formed by connecting each other to collect and discharge the fine powder into one place.

Referring to the operating state of the concrete aggregate recycling apparatus using the indirect heating method by the heat medium of the present invention configured as described above are as follows.

Waste concrete, which has been separated, sorted, and shredded of waste concrete from various construction sites, is first shredded in jaw crusher and transferred to the conveyor, and the transferred waste concrete is subjected to the first sorting process. And then through the second jaw crusher, double jaw crusher, through the conveyor to the screen of the secondary screening device to produce less than 30mm of peconcrete.

As shown in FIG. 1, the waste concrete produced through the crushing process is stored in the tank 10, and the collected waste concrete is a primary aggregate passage 31, which is a circulating aggregate production device that is an indirect heating method using a heat medium 50. Into the inlet (30).

At this time, the feeding belt 20 is installed between the inlet 30 and the tank 10 of the primary transport path 31, the waste concrete discharged from the tank 10 to the inlet 30 of the primary transport path 31 The amount of discharge can be controlled.

The waste concrete injected into the inlet 30 is transferred by a screw installed therein while passing through the primary transfer path 31, which is a cylindrical indirect heating box, to forcibly peel off the paste by friction and impact, and thereby the secondary transfer path. Transfer to (32). That is, in the primary transfer path 31, the paste adhered to the surface of the waste concrete is peeled off by impact and friction when the waste concrete collides with each other while being moved forward by the high speed rotation of the screw 40.

And indirectly receives the heat of 500 ℃ ~ 900 ℃ generated from the heat medium 50 stored in the interior of the pipe 100 is installed spirally on the outer surface of the secondary transfer path 32, the water in the waste concrete inside Is removed and transported. The heat medium 50 is a pretreatment device for increasing the efficiency of energy use when heating the waste concrete.

As such, the waste concrete conveyed through the conveying path passes through the primary conveying path 31, the secondary conveying path 32, and the tertiary conveying path 33 formed by zigzag of multiple stages, and thus the paste is perfect by impact and friction. It will be peeled off.

The peeled paste is discharged through the fine discharge outlets 61, 62 and 63 respectively connected to the ends of the primary transfer path 31, the secondary transfer path 32, and the tertiary transfer path 33, respectively. Since the outlets 61, 62 and 63 are connected to each other, the fine powder is discharged to one place. Thus, by discharging the fine powder to the fine powder discharge ports 61, 62, 63 to improve the friction between the waste concrete conveyed.

In addition, the water installed in the discharge pipe 70 when the paste adhered to the waste concrete is completely peeled and discharged through the primary transport path 31, the secondary transport path 32, and the tertiary transport path 33. Water is sprayed from the nozzle 90 so that no scattering dust is generated.

As described above, the waste concrete discharged by peeling the paste while being transported by the screw 40 installed inside the transport path 30 passes through a 5 mm vibration screen 80 vibrating with power to the motor 130 to circulate for concrete. Store the aggregates in the aggregate storage.

As such, the passing particle size of the recycled aggregate produced by the present invention passes through 100% of 40mm sieves, 95 to 100% of 25mm sieves, 25 to 60% of 15mm sieves, 0 to 10% of 5mm sieves, and 0 to 2.5mm sieves. It has a particle size that satisfies within 5%.

In addition, the absolute dry density (g / cm 3) of 2.5 or more, absorption rate (%) of 3.0 or less, particle shape determination performance rate (%) of 55 or more, wear loss (%) of 40 or less, and the amount lost in the 0.08 mm sieve test ( %) 1.0 or less, alkali aggregate reaction should be harmless, clay mass (%) 0.2 or less, stability (%) 12 or less, organic foreign substance content (%) 1.0 or less (volume), inorganic foreign substance content (%) 1.0 or less ( Mass).

FIG. 2 is an enlarged view of a state in which the heat medium 50 is mounted on the outer circumferential surface of the secondary feed path 32, and the pipe having the heat medium 50 mounted on the outer surface of the secondary feed path 32 by an indirect heating method. Spirally mounted to the 100, the screw 40 for conveying the waste concrete is formed therein. In the present invention, the heat medium 50 is installed on only the outer circumferential surface of the secondary conveying path 32. However, the present invention is not limited thereto. The outer circumferential surfaces of the primary and tertiary conveying paths 31 and 33 are described. The heat medium 50 can also be attached. The heating medium 50 includes all of those capable of generating heat. That is, the medium that transfers heat. In general, flue gas, heated air, water, steam and oil are used.

The first to third transfer paths 31, 32, 33 formed in a cylindrical shape as described above, the process of peeling the paste attached to the waste concrete by the screw 40 installed therein and the process of transferring the waste concrete. It is configured to work at the same time.

And the 30mm aggregate is a state in which the cement paste is attached when passing through the 25mm sieve so that the target 25mm aggregates are crushed to produce the target product 25mm aggregates to adopt a 30mm sieve.

In addition, the screw 40 installed in the primary, secondary, and tertiary conveying paths 31, 32, 33 is made of a material that can withstand high heat, and both shafts are fixed with bearings that can withstand high heat. In order to prevent heat transfer of the motor 120, which is connected to the screw shaft and transmits power to the belt 110, a heat dissipation joint is connected between the shaft and the motor.

In addition, the screw 40 installed in the inlet 30 is made of a material that can withstand the friction with the aggregate and the screw inner diameter is configured to be made larger than the size of the maximum aggregate.

Although the present invention having the configuration as described above has been described by a limited embodiment, the present invention is not limited by this and the technical spirit of the present invention by the person skilled in the art to which the present invention belongs and Various modifications and variations are possible within the scope of equivalents of the claims to be described.

10.Tank 20.Feeding Valve
30. Inlet 31. Primary transport path
32. 2nd transfer path 33. 3rd transfer path
40.screw 50.heat medium
61, 62, 63. Differential outlet 70. Discharge pipe
80. Vibrating screen 90. Water nozzle
100. Pipe 110. Belt
120, 130. Motor

Claims (5)

A tank (10) for storing the waste concrete which has been separated, sorted and crushed;
Feeding valve 20 mounted on the lower portion of the tank 10 for supplying and transporting a predetermined amount of waste concrete from the tank 10,
Primary conveying path 31 which is capable of peeling the paste while the waste concrete discharged by the feeding valve 20 is introduced through the inlet 30 to be transported by the screw 40,
A secondary transport path 32 connected to an end of the primary transport path to mount a screw 40 therein, and spirally mount a pipe 100 in which a heat medium 50 is embedded on an outer circumferential surface thereof;
A third transfer path 33 connected to an end of the secondary transfer path 32 and equipped with a screw 40 therein;
Differentiated discharge pipe 61 installed to discharge paste and fine powder separated by friction while waste concrete is transferred to the end sides of the primary and secondary tertiary feed paths 31, 32 and 33 ( 62) (63).
Circulating aggregate production device for concrete using an indirect heating method by the heat medium, characterized in that it comprises a vibration screen 80 is connected to the discharge pipe 70 formed at the end of the third transfer path 33 to screen the aggregate . The method of claim 1,
The primary conveying path 31, the secondary conveying path 32, the tertiary conveying path 33 is produced by circulating aggregate for concrete using an indirect heating method by the heat medium characterized by consisting of multiple stages connected in a zigzag at the end Device.
The method of claim 1,
The discharge pipe 70 installed at the end of the third transfer path 33 has an indirect heating method using a heat medium, characterized in that the water nozzle 80 is configured to remove the scattering dust generated when the waste concrete is peeled off. Circulating aggregate production device using concrete.
The method of claim 1,
The apparatus for producing circulating aggregate for concrete using an indirect heating method using a heat medium, characterized in that the heat medium 50 is further mounted on the outer circumferential surfaces of the first feed path 31 and the third feed path 33. The method according to claim 1 or 4,
The heating medium 50 is a circulating aggregate production device for concrete using an indirect heating method by the heating medium, characterized in that composed of any one of flue gas, heating air, water, steam, oil.

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