KR100929419B1 - Construction waste recycling processes and plant - Google Patents

Abstract

PURPOSE: An apparatus for producing circulation aggregate from construction waste and a method thereof are provided to produce sanitary circulation aggregate by adding a process for removing various bacteria included in the aggregate. CONSTITUTION: An apparatus for producing circulation aggregate including a cylindrical screen sorting machine comprises a sterilization and water spraying device(140) connected with a conveyor(20). A device(150) for preventing hole from blocking is installed at the cylindrical screen sorting machine. The sterilization and water spraying device includes a sterilization and waster spraying room formed to a tunnel shape on the conveyor, a spray nozzle installed at the inside the sterilization and waster spraying room, a water tank installed at the outside of the sterilization and waster spraying room, and a pumping device. The sterilized water or water is sprayed toward the aggregate in the sterilization and waster spraying room.

Description

Apparatus and method for producing recycled aggregate from construction waste by using sterilizing and watering device installed in the front stage of cylindrical screen sorter and cylindrical screen sorter combined with screen hole clogging prevention device {Construction Waste Recycling Processes and Plant}

The present invention relates to a construction waste recycling technology for producing construction waste into recycled recycled aggregates by shredding, separating foreign matters, and sorting, and in particular, spraying sterilizing water and general water to aggregate in a conveyor conveying process for inputting sorting machine after shredding. By adding sterilization and watering process that can be done, construction wastes brought in places where the hygienic environment is suspected can be sterilized and sanitized and recycled, and construction wastes carried in normal environment can be effectively used as a watering process to effectively prevent scattering dust. And sanitary and quality improvement from construction waste with high moisture content by cylindrical screen sorter equipped with screen hole blocking device to handle construction waste brought in with high moisture content and construction waste with increased moisture content due to rainfall. Pipe to the method and apparatus for producing circulating aggregate It is.

By recycling waste concrete and waste asphalt concrete according to the appropriate quality standards, it is possible to utilize the rapidly growing construction waste as aggregate resources by recycling the recycled aggregate, and to solve the problem of waste landfill shortage, By circular use, we can contribute to environmental conservation.

Normally, the process of producing recycled aggregates by treating construction wastes includes a primary crushing process of crushing imported lumps of construction waste into aggregates of 100 mm or less using a primary crusher; A foreign matter sorting process of sorting the reinforcing bar separated in the first shredding process by manpower on the first conveyor line for transferring the first shredded material to the first sorter; A primary sorting process of separating the primary crushed material introduced through the first conveyor into the soil and aggregate by the primary sorter, and discharging the soil through the soil discharge conveyor, and transferring the aggregate to the second conveyor; Wind sorting process for separating the foreign matter contained in the aggregate by the blower installed at the end of the second conveyor; A secondary crushing process of crushing 100 mm aggregates into aggregates of 40 mm or less by a secondary crusher located on the discharge side of the second conveyor; A magnetic separation process of separating the metal pieces by a magnet installed on a third conveyor which receives the discharge aggregate of the secondary crusher and feeds it into the secondary sorter; The secondary sorter connected to the outlet of the third conveyor is divided into 25mm or less aggregates (hereafter referred to as 25mm aggregate) and aggregates larger than 25mm and below 40mm (hereafter referred to as 40mm aggregate), respectively. The secondary sorting process to discharge; consists of.

Circulating aggregate can be used for road base, road auxiliary base, concrete, concrete product manufacturing, asphalt concrete, frostbite prevention and blocking layer, roadbed, roadbed, backfilling and backfilling, filling, covering, and landfill facilities. Since the quality standards for each application are classified according to the use of cover soil, the development of each process technology and the development of additional processes have been made to satisfy the quality requirements for particle size and physical properties. Efforts and technology development for the production of high-quality recycled aggregates, such as properly developed is made in a variety of ways, it is possible to produce recycled aggregates having a particle size and physical characteristics close to natural aggregates.

Construction wastes input from the circulating aggregate production process are usually crushed and screened at a moisture content of around 14%. The water content rate is high due to the high moisture content of construction wastes or the increase of the moisture content of construction wastes stored by rainfall. If more than 14% of the aggregate contained in the aggregate is swelled to block the screen hole to limit the discharge of fine aggregates, the quality of the recycled aggregates is drastically reduced, when the water content is more than 30%, the selection itself is impossible. As such, the problem of stopping the production of recycled aggregates in the state of deteriorating the quality of recycled aggregates according to the moisture content and the high moisture content after rainfall becomes a problem to be urgently solved in terms of quality control and production management in recycling construction wastes into recycled aggregates. have.

The recycling aggregate production process consists of crushing, screening, and removing foreign matter. Since scattering dust and noise are harmful environmental factors derived from recycling aggregate production, and scattering dust and noise have a great impact on the surrounding environment and worker's health, Article 42 of the Occupational Safety and Health Act regulates noise and dust Regarding noise and vibration, Article 43 of the Atmospheric Environment Conservation Act provides safety standards for scattering dust.

Noise and vibration do not change within the range designed in the installation process of the waste intermediate treatment plant, but the scattering dust varies according to the working conditions and directly affects the surrounding environment. As a guideline on the installation of facilities to prevent scattering dust and the necessary measures

A. Install watering facilities to prevent dust from scattering around.

I. When blasting, cover the bale with a wet blast or install an appropriate prevention facility before blasting.

C. Substances that may be scattered, such as powdery materials, should be stored in sealed containers or covered with a dust cover.

(D) providing the establishment of facilities with the same or more effects from head to head.

The crusher for circulating aggregate production, which mainly uses jaw crusher, is less likely to be generated dust because it is crushed by an internal crushing device while aggregate is filled in the upper hopper. However, the Trommel sorter using cylindrical screens has a complex motion such as friction between aggregate and screen, impact between aggregate and screen due to falling, collision between aggregates, etc. And most of the fugitive dust generated during the intermediate treatment of recycled recycled aggregates is generated during the screening process.

In order to suppress the generation of scattering dust in this sorting process, the sprinkling dust inside or outside the sorting machine can be reduced to reduce the occurrence of scattering dust significantly. It prevents the discharge of sediment or fine aggregates by blocking the screen net, thereby reducing the sorting efficiency and reducing the particle size and physical performance of the final production aggregate, making it difficult to produce high-quality recycled aggregates. Therefore, most of the recycled aggregate production sites avoid sprinkling work before or after the sorting machine. Therefore, if the working conditions change, the dust dust standard is often exceeded, which is subject to civil complaints and is bad for worker's health and hygiene. Affected.

On the other hand, construction waste is the dismantling of facilities used in a wide variety of environments such as general houses, apartment houses, building demolition, hospital dismantling, barns, factories, slaughter facilities, etc. It is produced as recycled aggregate and transported to the construction site for use on road foundations, subbases, landfills, and fills. Therefore, when harmful elements are included in the original construction waste, serious environmental problems such as workers at the circulation aggregate production site, workers at the construction site, and pollution around the construction site occur.

In order to prevent such environmental problems, Article 1-5 of the Soil Environment Conservation Act Enforcement Regulations (Criteria for Contamination of Soil) is based on cadmium, copper, arsenic, mercury, lead, hexavalent chromium, zinc, nickel, fluorine, organophosphorus compounds, and polyclones. Lined biphenyl, cyanide, phenol, oils (except animal and vegetable), benzene, toluene, ethylbenzene, xylene (BTEX), petroleum-based total hydrocarbon (TPH), trichloroethylene (TCE), tetrachloroethylene (PCE), etc. Although the quality of recycled aggregates is strictly restricted by setting acceptance criteria for harmful elements in Korea, there are no separate standards for biological hazards.

In other words, leptospirae transmitted by rat urine or feces, Salmonella causing typhoid fever, Listeria, abdominal pain and allergies, as well as Toxocara canis, which causes severe vision loss, have been demolished or brought in. There is a risk of contamination in the state, they are scattered with the dust during the crushing, sorting process of the aggregate, there is a risk of infecting the worker treating the circulating aggregate through the mucous membrane of the eyes, nose, throat, or directly through the skin wound.

In addition, aerobic disease, which survives in the soil and rises to the ground with wind or water droplets, causes the plants to rot and rubs, and black rot that infects and decays the plants through the soil. It is included in the circulation aggregate used as cover soil, etc., and may spread.

As such, when demolishing dirty and unsanitary facilities, biological harmful elements such as bacteria are included, and these harmful elements may harm the health and hygiene of workers dealing with circulating aggregates, and are spread along the use route of circulating aggregates. Pollution may occur, but it is being neglected because it is not regulated by the law, and there is little research on this, and there is a technical means to solve such sanitary problems in the construction waste treatment process. It was not suggested.

Meanwhile, in relation to the present invention, a screen structure of a waste sorter according to Korean Patent No. 0364439 and a screen sorter of a waste sorter according to Korean Patent No. 0867201 have been presented.

TABLE 1 Prior art presented by the present inventors

The former is bolted to the partitioned screen frame to attach a screen plate with a hole of a certain size, and the screen plate is divided so that only the screen plate can be replaced and repaired. Forming the screen plate with a rubber material provided an advantage of improving the hole clogging due to the wave of the rubber. This structure, however, is almost inelastic when the screen plate is made of a metal plate, so hole blockage occurs, and even in the case of a rubber plate, there is a certain effect of preventing hole blockage at the center where free wave movement is active, but at the edges, the hole is blocked. This was a frequently occurring problem.

The latter is a structure in which a spring is inserted between the screen plate and the screen frame and bolted to prevent vibration of the screen plate caused by the spring, which effectively prevents blockage and improves the durability of the screen plate due to its excellent shock absorption function. However, by combining the screen plate and the screen plate in close contact with each other, the spring plate interferes with each other and prevents the vibration and shock absorbing functions from being independently performed. As a result, the shock absorbing and clogging prevention functions cannot be effectively performed. When there is no room in the bolt hole formed on the screen plate, only the normal movement using the bolt as the guide shaft when the spring plate is retracted due to the impact is performed, and the atypical motion that moves like the screen plate (for example, among the four corners of the screen plate) Promotion by vibrating only on one edge) Improvement was required because it could not anticipate the effect of preventing clogging, and the aggregate should be pulled up to the upper part of the cylindrical screen and then dropped, and the aggregate should be smoothly passed through the hole to effectively shake off the soil and cement paste from the aggregate. Circulation aggregates can be obtained, but the screen plate and the screen plate are almost in close contact with each other, so there is a limit that can not be sufficiently obtained.

According to the present invention, even when the moisture content of aggregate is increased by sterilizing water or water spraying, or when construction wastes having high moisture content are brought in or when the moisture content of storage construction waste is increased by rainfall, circulating aggregate production can be carried out without any deterioration. The present invention provides a method and apparatus for producing recycled aggregates.

In addition, the present invention produces a sanitary recycled aggregate by adding a process for sterilizing and removing various bacteria contained in the aggregate in the process of producing recycled aggregates for the construction waste to be dismantled in an unsanitary environment, the operator in the selection process It is an object of the present invention to provide a production method and apparatus for producing sanitary recycled aggregates capable of preventing exposure to harmful elements or propagation of harmful elements such as bacteria through the use of recycled aggregates.

In addition, the present invention provides a hygienic and comfortable working environment by reducing the amount of scattering dust in the screening process, and the screening screen is prevented from being closed by the moisture contained in the earth and sand to improve the screening performance, hygienic and quality The present invention provides a recycling aggregate production method and apparatus that can produce excellent recycled aggregate.

In order to achieve the above object, the present invention provides a primary crushing process for crushing the imported bulk construction waste into aggregates of 100 mm or less using a primary crusher; A foreign material sorting process for sorting the reinforcing bar separated from the primary crush by manpower; A first sterilization / spraying step of sterilizing or sprinkling the first crushed material by using a sterilization / spraying device; A primary sorting process of separating and separating the soil and aggregate by a primary cylindrical screen sorter having a screen hole blocking device; A wind sorting process for separating foreign matter from the aggregate separated in the first sorting process using a wind sorter; A secondary crushing step of crushing the 100 mm aggregate that has undergone the foreign matter selection process using a secondary crusher into an aggregate of 40 mm or less; A magnetic separation process of separating the metal components mixed in the secondary crushed material by using a magnetic separator; A secondary sterilization / spraying step of sterilizing or sprinkling the second crushed matter using a sterilization / spraying device; Hygienic circulating aggregate production Give a way.
In addition, the present invention is a circulation aggregate production device comprising a cylindrical screen sorter, the sterilization and spraying device is installed on the conveyor connected to the cylindrical screen sorter, the screen hole clogging prevention device is installed in the cylindrical screen sorter, The sterilization and watering device includes a sterilization and watering room formed in a tunnel shape on a conveyor connected to the separator, a spray nozzle installed inside the sterilization and watering room, and a water tank and pumping installed outside the sterilization and watering room. It consists of a device is configured to spray the sterilizing water or general water toward the circulating aggregate in the sterilization, sprinkling room by selecting and supplying the sterilizing water or general water filled in the tank tank to the spray nozzle;
The screen hole blockage preventing device is configured to form an angle frame such that each screen plate is supported by a spring on a screen frame made of a cylindrical frame and each screen plate is spaced apart from each other and protrudes into the screen plate in the longitudinal direction of the cylindrical frame spaced apart from each other. And a vibrating device for applying vibration by striking the screen plate on the outside of the side of the screen; The present invention provides a device for producing circulating aggregates from construction waste by using a sterilizing sprinkler installed at the front stage of a cylindrical screen sorter and a cylindrical screen sorter.

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According to the present invention, even when the moisture content of aggregate is increased by sterilizing water or water spraying, or when construction wastes having high moisture content are brought in or when the moisture content of storage construction waste is increased by rainfall, circulating aggregate production can be carried out without any deterioration. In particular, it is possible to produce circulating aggregate that satisfies the quality level even in the state of high water content after rainfall, thereby improving the work efficiency.

In addition, the present invention can produce a sanitary recycled aggregate by adding a process for sterilizing and removing various bacteria contained in the aggregate to the construction waste to be removed in an unsanitary environment in the process of producing recycled aggregates, workers in the recycle aggregate production process It provides the effect of preventing exposure to harmful elements or propagation of harmful elements such as bacteria through the use of recycled aggregate.

In addition, the present invention by selecting the sterilization operation or the watering operation is selected to provide a hygienic and comfortable working environment by reducing the amount of dust scattered during the sterilization spraying process.

In addition, the present invention is to prevent the screen hole clogging device is installed in the primary and secondary cylindrical screen sorter to continuously penetrate the screen hole is blocked by the moisture contained in the soil to improve the screening performance to affect the performance of the circulating aggregate The effect is to improve the particle size and physical performance.

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

1 illustrates a method for producing circulating aggregate according to the present invention, the present invention includes a primary crushing process (1) for crushing imported bulk construction waste into aggregates of 100 mm or less using a primary crusher; A foreign substance selection process (2) for sorting the reinforcing bar separated from the primary crush by manpower; A first sterilization and watering process (3) for sterilizing or watering the first crushed material by using a sterilization and watering device; A primary sorting process (4) for separating and separating the soil and aggregate by a primary cylindrical screen sorter having a screen hole blocking device; Wind screening process (5) for separating the foreign matter from the aggregate separated in the primary screening process using a wind separator; A secondary crushing process (6) for crushing 100 mm aggregates subjected to the wind screening process into aggregates of 40 mm or less using a secondary crusher; A magnetic separation process (7) for separating the metal component mixed in the secondary crushed material by using a magnetic separator; A secondary sterilization and watering process (8) for sterilizing or sprinkling the second crushed material by using a sterilization and watering device; The secondary sorting process (9) to separate the secondary crushed material into 25mm aggregate and 40mm aggregate by the secondary cylindrical screen selector combined with the screen hole clogging prevention device to discharge to the 25mm discharge conveyor and 40mm discharge conveyor, respectively.

① Import of construction waste

 According to the Act on the Promotion of Recycling of Construction Waste, the discharge of construction waste is notified to the head of the mayor, county, or ward, and the type, characteristics, and expected amount of construction waste are reported. The characteristics are identified, and the quality control staff of the intermediate treatment company can identify the sanitation status of construction waste in advance.

Therefore, separate the construction wastes brought in from the good sanitary environment and the construction wastes brought in from the bad sanitary environment, and store them temporarily before treatment. More hygienic quality control is possible.

② First shredding process

It is a process of crushing coarse construction waste brought into the intermediate treatment plant into the primary crusher and crushing it into coarse aggregate of 100mm or less.

The efficiency of the input operation is improved by adjusting the installation height of the primary shredder so that the construction waste input position and the hopper input hole of the primary shredder are the same.

The jaw crusher is used in the first crushing process, and the jaw crusher can efficiently crush the lump-type construction waste into coarse aggregate of 100mm or less.

③ Foreign material selection process

Foreign material sorting is the process of selecting large foreign objects such as rebar, vinyl, cloth, wood, etc. exposed by primary crushing of reinforced concrete by manpower, and placing manpower on the first conveyor addressed to the outlet of the primary crusher. Separate and remove foreign substances.

Workers who are involved in the foreign matter selection process should wear dust masks, hard hats, work clothes and gloves to prevent exposure to scattering dust and harmful elements.

④ 1st sterilization and watering process

Sterilization and watering process is a process of selecting sterilization or general water to sterilize or water.

Sterilization and sprinkling process is carried out with the same facilities, and sterilization or sprinkling is performed by selecting and disinfecting the sterilizing agent or general water supplied by the tank.

Sterilization has a sterilization effect by diluting 500 ~ 1000 times in water by chemicals for sterilization or sterilization stock solution and also prevents scattering dust by sterilizing water. To live.

Sterilization and watering device for sterilization and watering process includes a water tank tank for storing general water or sterilizing water, a pumping device for pressurizing and pumping general water or sterilizing water, and for spraying general water or sterilizing water to conveyor conveying aggregate. It consists of a nozzle, and creates a sterilization / sprinkling room in the tunnel shape on the first conveyor or the third conveyor to prevent it from being blown by spraying general water or sterilizing water inside the sterilization / sprinkling room, and to increase the sterilizing ability by the fumigation effect. Can be.

Sterilized water has been proven safe and certified, uses a disinfectant that has a universal effect against viruses and microorganisms, and dilutes it with 500 ~ 1000 times of water in the disinfectant solution.

As a disinfectant, it is an eco-friendly disinfectant that uses biotechnology such as InfoScience, Cenforth, Clean Force, Red Card, etc. of ELTscience, and disinfectant disinfectant that contains sodium dichloroisocyanurate as the main ingredient. Kica-TOOL (Eternal Chemistry) and other disinfecting solvents can be used that are soluble in water without residues and have excellent bactericidal properties against bacteria and pathogenic microorganisms.

⑤ 1st sorting process

The primary sorting process is to remove the cement paste, stone powder or earth and sand produced by the primary crushing process from the crushed material and discharge it from the crushed material. It is a trommel sorter using a rotating cylindrical screen having a 15 mm hole size. Cement paste, stone powder or earth and sand less than 15mm are discharged through the screen hole by the soil discharge conveyor and discharged into the soil discharge space.

The coarse aggregate that does not pass through the screen hole is discharged through the outlet of the cylindrical screen and is transferred to the wind screening process and the secondary crushing process via the second conveyor.

Screen hole clogging prevention device is invented by the present inventors can be easily achieved by applying the screen structure of the cylindrical waste sorting device according to the patent 10-0867201 and the vibration device of the waste sorter according to the registered patent 10-0799734. .

That is, in configuring the screen, the vibration and wave motion of the screen plate assembled in the spring support state on the screen frame during the collision of the screen and the aggregate in the screening process by the configuration of the spring to support the edge of each screen plate in the cylindrical screen frame It is possible to prevent clogging of the screen hole by acting as an inertial force on the wet soil which blocks the screen hole, so that the process of detaching from the screen hole occurs continuously.

In addition, the vibrating device that strikes the screen plate to the outside of the side of the screen to vibrate the screen by rotating the diaphragm made of wire or rubber belt and hitting the screen plate to shake off the wet soil that is blocking the screen hole continuously Hole blocking can be prevented.

Both the spring-loaded screen plate structure and the structure of the vibrator can be applied to the sorter, and only one element can be applied, which prevents the wet soil from clogging the screen hole and, if the hole is blocked, effectively It can effectively solve the problem of declining efficiency of the sorting machine in the soil treatment in the wet state by the sterilization and watering process or waste treatment in the high water content from the beginning.

Therefore, the screen hole clogging prevention device in the trommel sorter of cylindrical screen structure can provide the sorting efficiency equivalent to or higher than that of the dry state without sacrificing the moisture content of the waste to meet the quality standards required for the recycled aggregate. In addition, it is technically worthwhile to meet these quality requirements in the production environment that effectively suppresses sanitary aggregate production process and scattering dust.

In addition, circulating aggregate processing could hardly be performed in a state where the water content was high after rainfall, but circulating aggregate processing was possible except for bad weather by the screen hole blocking device, so that production management can be effectively performed.

⑥ Wind power sorting process

In the wind sorting process, a blower is installed under the discharge stage of the third conveyor to separate foreign substances such as styrofoam fragments, wood fragments, cloth or vinyl fragments contained in the primary sorted circulating aggregate by blowing them with wind power, using a specific gravity difference. It is a process of separating foreign matters by dropping only the aggregate, which is a heavy product, to be introduced into the secondary crusher.

⑦ Second shredding process

The second jaw crusher is used to crush aggregates of 100mm or less separated by the wind screening process into aggregates of 40mm or less. The double jaw crusher is applied to the crusher. Aggregates can be crushed efficiently.

⑧ Magnetic sorting process

The magnetic separator is a device for separating and separating pieces of metal using magnets. The magnetic separator is installed on a third conveyor before the input of the secondary separator to separate and separate metal foreign matters.

⑨ 2nd sterilization and watering process

The second sterilization and watering process is a process of selecting sterilization water or general water to sterilize or water the same process as the first sterilization and watering process.

In the second sterilization and watering process, a sterilizing agent having the same sterilizing effect as that used in the first sterilizing and watering process can be used. If necessary, a sterilizing agent effective for other fungi can be used. When the sterilization effect by the process is achieved to some extent, it is possible to effectively prevent the scattering dust in the secondary screening process by operating in the spraying process.

⑩ 2nd sorting process

The second sorting process is the final stage of the production of recycled aggregate. The trommel sorter with cylindrical screen structure is used. The screen has 25mm hole in the first half and 40mm hole in the second half. It is selected by aggregate of standard.

Screen hole clogging prevention device is also applied to the sorter used in the secondary screening process, the screen hole clogging prevention device is a collision between the screen and the aggregate in the screening process by the structure of the spring screen supported by the edge of each screen plate to the cylindrical screen frame Vibration and wave movement of the screen plate assembled with the spring support on the screen frame act as an inertial force on the wet soil which blocks the screen hole, so that the screen hole clogging can be prevented by continuously removing it from the screen hole. .

In addition, the vibrating device that strikes the screen plate outside the side of the screen to apply vibration to the screen plate while the vibration plate made of wire or rubber belt rotates to blow off the wet soil that is blocking the screen hole to prevent screen hole clogging. have.

Both the spring-loaded screen plate structure and the structure of the vibrator can be applied to the sorter, and only one element can be applied, which prevents the wet soil from clogging the screen hole and, if the hole is blocked, effectively Through drilling, it is possible to effectively solve the problem of deterioration of the efficiency of the sorter in the soil treatment in the wet state by the sterilization and watering process or the waste treatment in the high water content from the beginning.

Therefore, the screen hole clogging prevention device in the trommel sorter of cylindrical screen structure can provide the sorting efficiency equivalent to or higher than that of the dry state without sacrificing the moisture content of the waste to meet the quality standards required for the recycled aggregate. In addition, it is technically worthwhile to meet these quality requirements in the production environment that effectively suppresses sanitary aggregate production process and scattering dust.

⑪ Oversize (non-standard aggregate) feedback process

 The oversize feedback process is a process of discharging the screen installed in the secondary crusher in a wide direction and discharging it back to the secondary crusher when the aggregate size exceeds 40 mm.

Oversize is a factor that reduces the granularity of the aggregates, which can be fed back and crushed to meet the aggregate aggregate quality requirements.

Circulating aggregate production device according to the present invention is a circulating aggregate production device comprising a cylindrical screen selector, a sterilization and spraying device is installed on a conveyor connected to the cylindrical screen selector, screen hole blocking device to the cylindrical screen selector Is installed, the sterilization and watering device is a sterilization and watering room formed in a tunnel shape on the conveyor connected to the separator, the spray nozzles installed inside the sterilization and watering room, and is installed outside the sterilization and watering room It consists of a tank tank and a pumping device is selected so that the sterilizing water or general water filled in the tank tank is supplied to the spray nozzle by spraying the sterilizing water or general water toward the circulating aggregate in the sterilization and sprinkling room;
The screen hole blockage preventing device is configured to form an angle frame such that each screen plate is supported by a spring on a screen frame made of a cylindrical frame and each screen plate is spaced apart from each other and protrudes into the screen plate in the longitudinal direction of the cylindrical frame spaced apart from each other. And a vibrating device for applying vibration by striking the screen plate on the outside of the side of the screen; It is characterized by.
Figure 2 shows an embodiment in which the circulating aggregate production device according to the present invention is applied to the above production method, the circulating aggregate production device shown in the aggregate aggregate waste put into the circulating aggregate production device hopper (11) less than 100mm aggregate A primary crusher 10 for crushing with a; A first conveyor 20 for transferring the primary crushed material to the primary sorter; A foreign material selection line 30 installed on the first conveyor to separate the reinforcing bar and the large foreign matter by manpower; A primary cylindrical screen sorter 40 for separating and discharging primary crushed materials introduced through the first conveyor into soil and aggregate; A soil discharge conveyor (50) for discharging the soil collected in the primary sorter to the outside; A second conveyor 60 for transferring the aggregate discharged from the primary sorting machine to the secondary crusher; A wind classifier 70 installed below the second conveyor 60 to separate foreign matter by applying wind power to the second conveyor falling object; A secondary crusher 80 which receives the aggregate discharged from the second conveyor and sorts it to a size of 40 mm or less; A third conveyor 90 receiving the discharge of the secondary crusher and transferring the discharged to the secondary separator; A magnetic separator installed on the third conveyor to separate the metal pieces; A secondary cylindrical screen selector 110 installed on the discharge side of the third conveyor and separating and separating the 25 mm aggregate and the 40 mm aggregate; 25 mm aggregate discharge conveyor 120 for discharging the 25 mm aggregate selected by the secondary sorting machine; It consists of a 40mm aggregate discharge conveyor 130 for discharging the 40mm aggregate selected by the secondary sorter.
The present invention is applied to the recycled aggregate production device comprising a cylindrical screen selector as described above, the sterilization and watering device 140 is installed on a conveyor connected to the primary cylindrical screen selector 40, The primary cylindrical screen selector 40 may be implemented in a configuration in which the screen hole blocking device 150 is installed.
In addition, the present invention, the sterilization and watering device (140a) is installed on the conveyor connected to the secondary cylindrical screen selector 110, the secondary cylindrical screen selector 110 is provided with a screen hole clogging prevention device 150 It can be implemented in a configuration.
In addition, according to the present invention, a first sterilizing and sprinkling device 140 is installed on a conveyor connected to the primary cylindrical screen selector 40, and the screen cylindrical clogging prevention device 150 is provided on the primary cylindrical screen sorter 40. Is installed, the second sterilization and watering device (140a) is installed on the conveyor connected to the secondary cylindrical screen selector 110, the screen hole blocking device 150 is installed on the secondary cylindrical screen selector (110) It can be implemented in a configuration.

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The sterilization and watering devices 140 and 140a are provided with a tunnel-shaped sterilization and watering room 141 on the first conveyor 20, which is a preliminary stage of the primary sorter 40, and the sterilization and watering room 141. The spray nozzle 142 is installed inside, and the water tank tank 143 and the pumping device 144 are installed outside the sterilization / spraying room 141 to fill the water tank 143 with sterilized water or general water. By selecting and supplying to the injection nozzle 142, the sterilizing water or general water is sprayed toward the circulation aggregate in the sterilization and watering room 141.

As shown in FIG. 5, the screen hole clogging prevention device 150 is supported by a spring 153 on each screen plate 152 on a screen frame 151 made of a cylindrical frame, and each screen plate ( 152 is formed to be spaced apart from each other, the angle frame 151b is formed so as to project inside the screen plate 152 between the screen plate 152 spaced in the longitudinal direction of the cylinder, and the screen plate 152 outside the side of the screen It is made of a configuration that forms a vibrating device 156 to apply vibration by hitting ().

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In the illustrated embodiment, the primary crusher 10 is a device for crushing the lump construction waste put into the hopper 11 using an excavator or the like to aggregate less than 100mm, jaw crusher is used, the secondary crusher 80 is 100mm Double jaw crusher is used as a device for crushing the internal and external aggregates below 40mm, the size of recycled aggregates.

Each conveyor 20, 50, 60, 90, 120, 130, 160 is a device for conveying crushed or sorted aggregate, and each conveyor can be composed of lines by a single conveyor, Two or three conveyors can be combined for efficiency in turning and space layout.

The primary and secondary cylindrical screen selector 40, 110 is a device for sorting and sorting the aggregate aggregated by rotating the cylindrical screen formed with holes in accordance with the size of the sorting aggregate.

The primary cylindrical screen selector 40 has a structure in which the hopper 41 is integrally formed, and receives the aggregate discharged from the first conveyor 20 as the hopper 41 to separate the soil and aggregate from the cylindrical screen. It is configured to discharge to the discharge conveyor 50 and the second conveyor (60).

Secondary cylindrical screen selector 110 has a hopper is discharged with the third conveyor 90 discharge end is inserted into the inlet of the cylindrical screen, there is no hopper, the cylindrical screen 111 is the front hole size 25mm screen (111a) And the second half hole size is formed by dividing the 40mm screen (111b) by separating the 25mm aggregate through the 25mm screen (111a), 40mm aggregate through the screen 111b is configured to be separated.

The wind power separator 70 is a device for separating low specific gravity materials including vinyl or clothes by applying wind power to the falling material of the second conveyor 60, and the magnetic separator 100 is installed on the third conveyor 90 to use magnetic force. It is a device to separate metal pieces.

Sterilization and sprinkling device 140, 140a according to the present invention is installed on the first conveyor 20 or the third conveyor (90) to be sterilized by spraying sterilizing water or general water on the aggregate moving on a conveyor It is a device for obtaining a watering effect.

3 and 4 show the sterilizing and sprinkling device 140 and 140a according to the present invention, and are provided in the tunnel-shaped sterilizing and sprinkling room 141 and the sterilizing and sprinkling room 141. The nozzle 142, the water tank tank 143 and the pumping device 144 installed on the outside of the sterilization and watering room 141 is selected by the sterilizing water or general water filled in the water tank tank 143 to spray nozzle By supplying to 142, sterilization water or general water is sprayed toward the circulation aggregate in the sterilization and watering room 141.

 The sterilization and watering room 141 is a tunnel shape and is made of a flexible material for the entrance and exit of the front and rear aggregates of the sterilization and watering room 141 so as not to be blown by the wind during the sterilization and watering process. 141a is formed.

Typically, the aggregates passing through the sterilization and watering room 141 after crushing pass through in a widely dispersed form on the conveyor, so that the sterilizing and watering effects can be sufficiently exerted even by spraying the sterilizing water and general water by the spray nozzle.

Screen hole clogging prevention device 150, as described above, by applying the vibration device of the waste sorter according to the inventors of the invention 10-0799734 invented by the inventors, of the cylindrical waste sorting apparatus according to the registered patent 10-0867201 This can be easily achieved by improving the screen structure.

That is, as shown in FIG. 5, each screen plate 152 is supported by a spring 153 on a screen frame 151 made of a cylindrical frame. The screen plates 152 are formed to be spaced apart from each other, and the angle frame 151b is formed so as to protrude into the screen plate 152 in the cylindrical longitudinal direction between the spaced screen plate 152 and the outer side of the screen The vibration device 156 is formed to strike the screen plate 152 to apply vibration.

The screen frame 151 has a longitudinal member and a ring member 151a are integrally combined in a lattice form so that the screen plate is seated, and a space is formed on the inner side of the screen plate, and a circular roller support and rotational power are provided on the outside. Gears are formed.

The screen plate 152 coupled to the screen frame is divided into three to six in the circular direction and approximately three to four in the longitudinal direction of the cylindrical screen to form a cylinder, as shown in the development of FIG. An elongated bolt hole 152a for coupling with the screen frame is formed.

On the circular edge of the screen plate 152, two to four springs 153 are fastened by bolts 154 according to the size of the screen plate, and are fastened by three to four springs and bolts in the longitudinal direction. It is coupled to the frame 151 in a stable state.

The long bolt hole 152a formed in the screen plate provides room for the screen plate 152 to vibrate in a twisted state while the bolt 154 is coupled to the screen frame.

In order to smoothly move the screen plate, the washer 154a is inserted into the head of the bolt 154 while the spring 153 is inserted between the screen frame 151 and the elongated bolt hole 152a and the elongated bolt hole. Inserted into the (152a) to be fixed to the screen frame is configured to make a frictional contact between the washer (154a) and the screen plate 152.

According to the above configuration, when the loading load by the aggregate is applied to one edge of the screen plate, there is room by the long bolt hole, so that only one corner of the screen plate is retracted to bear the load, and in that state to another aggregate Even if an impact is applied, the spring's elasticity acts in that direction, so that not only the vibration moving backwards and backwards through the bolt as a whole, but also the vibration movement at the corners simultaneously occurs, and the wave movement improves the shock absorption ability and blocks the hole. Better performance to shake off foreign matter.

The screen plate 152 and the screen plate 153 are spaced apart so as not to interfere with adjacent screens within the standard range of the aggregate to be screened, and an angle frame 151b is installed between the longitudinal screen plate and the screen plate of the cylindrical screen. .

The angle frame may be formed by abutting two "a" type, and may be formed by welding the bottom surface to contact the ring member 151a by using the T type, and the protrusion of the angle frame 151b. It is formed to protrude about 50 ~ 100mm from the inner surface of the screen plate through the gap formed between the screen plate and the screen plate, and the screen plate interferes with the angle frame by allowing the angle frame protrusion and the screen plate to be sufficiently spaced within the standard range of the aggregate. It is configured not to be.

 As shown in FIG. 7 by the above structure, the aggregate pulled upward by the rotation of the screen falls to the top of the cylinder, and the motion of impinging on the bottom screen is continuously performed by the rotation of the cylindrical screen portion. Vibration and wave movements take place simultaneously.

The angle frame that protrudes in this process is to pull up the aggregate to the top of the cylinder to drop the fine particles such as cement paste buried on the aggregate surface to improve the circulating aggregate quality.

In addition, the protrusion divides each screen plate and the screen plate menstruation of the aggregate appropriately to be distributed evenly, and serves to improve the sorting efficiency by inducing discharge through the screen plate.

In addition, it serves to improve the durability of the screen plate by dispersing the impact by the aggregate applied to the screen plate in the cylindrical screen.

With the above structure, each screen plate vibrates and vibrates independently according to the impact force or load applied to each screen plate at the same time as the cylindrical screen rotates to shake off the soil attached to the hole, and absorbs the impact to prevent screen hole clogging. Done.

Figure 8 is a comparison of the present invention and the previous patents presented by the above configuration, by the structure of the screen plate and the angle frame installed separately from each other presented by the present invention can perform screen hole clogging more effectively, more high quality It will be possible to produce recycled aggregates.

As shown in FIG. 9, the vibration device 56 that is installed on the top of the screen and strikes the screen plate 152 has a structure in which a vibration plate 56b made of wire or rubber belt is coupled to the rotation shaft 56a. As the rotary shaft rotates, the screen plate is prevented by hitting the screen plate to shake off the wet soil which blocks the screen hole.

The present invention installs a fourth conveyor 160 connecting the rear of the screen and the secondary crusher in order to feed back the over-size (outside the standard aggregate) discharged to the rear of the screen through the screen of the secondary cylindrical screen selector 110 as it is. It has a structure.

By re-crushing by feeding back the oversize, the particle size quality of the aggregate can be further improved.

In the drawings, reference numeral 31 denotes a foreign material such as reinforcing bar, 32 foreign material such as vinyl, 51 denotes 15mm earth and sand, 131 denotes 40mm aggregate, 121 denotes 25mm aggregate, and 170 denotes a barrier to prevent mixing of aggregates.

The present invention by the above configuration can be effectively applied not only to the aggregate of high moisture content, but also to building waste produced in an unsanitary environment, as shown in Figure 10, in any case it is possible to obtain a good quality recycled aggregate.

① The screening waste caused by the increased moisture content can be obtained by sterilizing the construction wastes generated in the poor sanitary environment in the circulating aggregate production stage and preventing the scattering dust by applying the sterilizing water. The clogging phenomenon can be eliminated by the screen hole clogging preventing device to produce hygienic and high quality recycled aggregate.

② It can prevent scattering dust by spraying general water on general construction waste which does not need to consider hygienic problems. Screen hole clogging caused by water content increased by watering can be prevented by screen hole blocking device. By eliminating it, it is possible to produce high-quality recycled aggregates.

③ The screen hole clogging phenomenon caused by construction waste with high moisture content after rainfall and construction waste with high moisture content from loading can be eliminated by screen hole clogging device to produce high quality recycled aggregate without disrupting the production of recycled aggregate. have.

1 is a production process diagram of the sanitary circulating aggregate according to the present invention

Figure 2 is a configuration diagram of the sanitary circulation aggregate production apparatus according to the present invention

Figure 3 and Figure 4 is an embodiment of the sterilization, watering device according to the present invention

5 is an embodiment of the screen hole clogging prevention device according to the present invention

6 is a partially developed view of a cylinder for showing the structure of a screen according to the present invention;

7 is a coupled state and operation state of the screen plate

8 is a comparison of the coupling structure of the screen plate according to the present invention and the conventional screen plate coupling structure

9 is an operation state diagram of the vibration device according to the present invention

10 is a conceptual diagram of the application effect of the present invention

*. Explanation of Major Codes

10: Primary Shredder 11: Hopper

20: First Conveyor

30: Foreign material selection line

40: primary cylindrical screen sorter 41: hopper

50: earth and sand discharge conveyor

60: second conveyor 70: wind turbine

80: secondary crusher 90: third conveyor

100: magnetic separator 110: secondary cylindrical screen sorter

111: cylindrical screen 120: 25 mm discharge conveyor

130: 40 mm discharge conveyor 140: first sterilization and watering device
140a: second sterilization and watering device

141: sterilization and watering room 141a: curtain

142: injection nozzle 143: tank tank

144: pumping device 150: screen hole blocking device

151: screen frame 152: screen plate

153: spring 154: fastening bolt

155: screen 156: vibrator

156a: rotating shaft 156b: diaphragm

Claims (3)

In the circulation aggregate production device comprising a cylindrical screen separator, A sterilizing and sprinkling device is installed on the conveyor connected to the cylindrical screen sorter, and a screen hole blocking device is installed on the cylindrical screen sorting device, and the sterilizing and sprinkling device is tunnel-shaped on a conveyor connected to the cylindrical screen sorting device. Sterilization and sprinkling room formed of the, and the injection nozzle installed in the sterilization and sprinkling room, the tank and pumping device installed outside the sterilization and sprinkling room to select the sterilizing water or general water filled in the tank tank It is configured to spray the sterilizing water or general water toward the circulating aggregate in the sterilization and watering room by supplying the nozzle; The screen hole blockage preventing device is configured to form an angle frame such that each screen plate is supported by a spring on a screen frame made of a cylindrical frame and each screen plate is spaced apart from each other and protrudes into the screen plate in the longitudinal direction of the cylindrical frame spaced apart from each other. And a vibrating device for applying vibration by striking the screen plate on the outside of the side of the screen; Apparatus for producing circulating aggregate from construction waste by using a sterilizing and sprinkling device installed in the previous stage of the cylindrical screen sorter and cylindrical screen sorter combined with the screen hole clogging prevention device. The method according to claim 1, Two to four long bolt balls are formed at the rim of the screen plate and are supported by the screen frame by springs and bolts, respectively. The springs are inserted between the screen frame and the long bolt balls, and the washers are inserted into the heads of the bolts. The cylindrical screen sorter combined with the screen hole clogging prevention device and the sterilization / spraying device installed in the previous stage of the cylindrical screen sorter are used to insert the bolt holes to be fixed to the screen frame so that friction contact is made between the washer and the screen plate. To produce recycled aggregates from construction waste. A primary crushing step of crushing the imported bulk construction waste into aggregates of 100 mm or less using a primary crusher; A foreign material sorting process for sorting the reinforcing bar separated from the primary crush by manpower; A first sterilization / spraying step of sterilizing or sprinkling the first crushed material by using a sterilization / spraying device; A primary sorting process of separating and separating the soil and aggregate by a primary cylindrical screen sorter having a screen hole blocking device; A wind sorting process for separating foreign matter from the aggregate separated in the first sorting process using a wind sorter; A secondary crushing process for crushing 100 mm aggregates subjected to the wind screening process into aggregates of 40 mm or less using a secondary crusher; A magnetic separation process of separating the metal components mixed in the secondary crushed material by using a magnetic separator; A secondary sterilization / spraying step of sterilizing or sprinkling the second crushed matter using a sterilization / spraying device; A secondary sorting process of separating the secondary crushed material into 25mm aggregates and 40mm aggregates by means of a secondary cylindrical screen sorter combined with a screen hole clogging preventing device, and discharging them into a 25mm discharge conveyor and a 40mm discharge conveyor, respectively; Method for producing circulating aggregate from the construction waste by using a sterilizing and sprinkling device installed in the previous stage of the cylindrical screen sorter and cylindrical screen sorter combined with a screen hole clogging prevention device.

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