KR20010106385A - A system of crushing and sorting the construction wastes - Google Patents

Abstract

A color cathode ray tube is provided with a saddle-shaped shadow mask. As a result, the sensitivity to doming and microphonics of the mask is improved. This is advantageous, in particular, for a cathode ray tube having a very flat display window. Preferably, the display device in which the cathode ray tube is employed is provided with two dynamic quadrupoles, for example, in front of the electron gun and in front of a deflection unit.

Description

Construction Waste Crushing and Sorting System {A SYSTEM OF CRUSHING AND SORTING THE CONSTRUCTION WASTES}

The present invention relates to a construction waste crushing and sorting system, and more particularly, it is possible to recycle a good amount of soil or aggregate of a high degree capable of recycling various construction waste consisting of soil, waste concrete, waste asphalt, etc. The present invention relates to a construction waste shredding and sorting system that prevents the destruction of the natural environment caused by the reckless landfill of construction wastes and enables the reuse of landfills or soils at various construction sites to prevent enormous economic waste.

In recent years, a large amount of construction waste has been generated due to the redevelopment of houses and apartments and repair of roads, but it is very insignificant that the efficient treatment of such waste has been realized. Most construction waste is buried in the ground. It's happening.

As a result, not only the waste of resources but also various environmental pollution are emerging, and the necessity of active use of them is highlighted. In recent years, in order to promote the active use of various construction wastes, the treatment apparatus or methods used for intermediate treatment of construction wastes have been raised. Many technical developments have been made, and many patents have been applied or registered.

However, although many patents have been filed and registered, the increasing interest in the treatment of construction wastes is encouraging. However, it is still required to recycle construction wastes in a quality state of high quality suitable for all regulations. Obtaining recycled aggregates that can be used for many purposes has been difficult due to the current state of the art in the industry and waste aggregate treatment equipment.

That is, the intermediate treatment device of the construction waste used in the prior art is composed of a crushing device and a sorting device for crushing and classifying large-size solidified waste concrete, waste asphalt and various construction subsidiary materials into predetermined particulates. Waste that is crushed and sorted by the device is usually used for landfill, fill, or mixed with ordinary aggregates at an appropriate ratio in the construction and civil engineering fields. In the case of waste, there was a problem in that it was unable to produce high-quality recycled products in compliance with the relevant regulations.

In other words, the recycled product contains a large amount of dirt, stone powder, metal waste, garbage, and other foreign substances, or the overall quality of the recycled product is reduced due to irregular particle size, resulting in a product that is not suitable for all regulations of recycled aggregates, and its use is avoided. The failure to find a runway did not improve the profitability of construction waste makers, which required enormous equipment and costs.

In particular, in the case of the construction waste intermediate treatment apparatus according to the present invention or a number of inventions invented, a conveyor to which the crushed construction waste moves to remove soil contained in the construction waste to obtain a high quality recycled product contains washing water. It is designed to remove soil from the waste by passing through the water tank, and to make the process of crushing and sorting the waste several times to obtain reclaimed fine grain. There was this difficult problem, and also to install a blower at the lower end of the conveying conveyor to remove the foreign matter mixed in the waste, foreign matter contained in the aggregate falling on the opposite side of the blower is separated by the wind Selected bone collected by collecting foreign matter collection It is configured to prevent mixing with ash, but foreign substances sucked by foreign matter collection by wind pressure of blower are vortexed inside the foreign matter collection box and come out to the outside again. This resulted in the production being interrupted.

The present invention has been made to solve the problems of the conventional construction waste shredding and sorting system described above, the construction waste shredding and sorting system according to the present invention is to maintain a uniform particle size of the shredded construction waste as well as the crushed aggregate The purpose of the present invention is to provide an improved quality of construction waste recycled aggregates in accordance with the relevant regulations by minimizing soil content.

Construction waste crushing and sorting system according to the present invention in order to achieve the above object is a plurality of first, sequentially arranged to shred the construction waste supplied from the hopper and the construction waste supplied from the hopper below a certain particle size, A second crusher and a plurality of transfer and discharge conveyors installed between the plurality of crushers to transfer construction wastes and to sort and discharge the shredded construction wastes respectively, and are installed between associated transfer and transfer conveyors or between transfer conveyors and discharge conveyors. In the shredding and sorting system of construction wastes comprising a plurality of first and second vibrating screens and foreign matter removal means to shred the construction waste and to be sorted according to each shredding degree, the second screen is shredded 0 to 8 mm, 9 to 25 mm and 26 to 40 mm, respectively, Different sorting holes are formed so as to be discharged to the recycled aggregate and installed in the upper and lower duplex, and the construction waste of 41 mm or more which is not discharged through the duplex screen can be crushed again and supplied to the second screen. By being equipped with three shredders it is configured to maintain the uniform crushing degree of construction waste and improve the quality of the crushed aggregate.

In particular, between the hopper and the first shredder is provided with a vibratory waste feed and transfer unit so that construction waste is naturally supplied to the first shredder and the soil contained in the waste can be detached in advance before the first shredder. The conveying part has a characteristic structure in which a waste feed guide of a total narrow back light type gradually increases in width from the hopper side to the first crusher side, and a soil powder conveying conveyor and a soil powder conveying conveyor are installed at the bottom of the waste input conveying part. And a flat plate vibrating screen having a circular sorting hole penetrated between the soil conveying conveyor and the discharge conveyor, and the other end of the screen removing foreign substances for removing foreign matters contained in the waste having a large particle size not discharged through the sorting hole. It consists of a structure in which the means and the conveying conveyor is installed.

In addition, the foreign matter removing means is installed on the opposite side of the blower is installed foreign matter storage unit, the blower duct of the blower is formed to be inclined upward so that the blown air discharged from the blower is inclined upward, contained in the waste on the opposite side of the upwardly inclined blower duct After the foreign matter is blown out by the blow and collided, the material with a small specific gravity falls to the foreign matter storage part and the material with a large specific gravity falls downwardly. It is configured to be possible.

In particular, at the top of the rear wall of the foreign matter storage unit, that is, at a height similar to the foreign matter inlet, a blower outlet is formed to naturally discharge to the outside of the foreign matter storage unit after the blower discharged from the blower enters the foreign matter inlet, and only the wind escapes through the blower outlet. The filter net is installed to prevent the discharge of foreign substances, and the wind of the blower entering the foreign substance storage unit is configured to prevent the foreign substances from being discharged to the outside of the foreign substance entrance again due to the vortex generated inside the foreign substance storage unit.

1 is a schematic plan view of a construction waste crushing and sorting system according to the present invention,

Figure 2 is a side view schematically showing the installation state of the construction waste crushing and sorting system according to the present invention,

3 is a perspective view of a waste input transport unit for moving construction waste supplied to a hopper to a first crusher;

Figure 4 is an enlarged cross-sectional view of a part of the foreign matter removing means applied to the present invention,

5 is an external perspective view of a screen applied to the present invention,

6 is an overall process diagram of a construction waste crushing and sorting system according to the present invention.

※ Explanation of code for main part of drawing

10: earth powder 12: 1-8mm stone powder and fine aggregate

14: 9-25 mm aggregate 16: 26-40 mm

20: foreign matter 30: hopper

C1, C2, C3, C4, C5: Transfer Conveyor C6, C7: Return Conveyor

E1, E2, E3, E4: Discharge Conveyor M1, M2, M3: Foreign Material Removal Means

40: foreign matter storage unit 42: air blowing outlet

45: filter network 47: blower

49: Blowing duct S1, S2, S3: 1st, 2nd, 3rd screen

50, 60, 70: first, second, third shredder

80: waste input and transfer section 82: waste transfer guide

85: Selector

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

Construction wastes (hereinafter referred to as "waste aggregate") are usually used as aggregates for landfill or fill by crushing and classifying concrete blocks or waste asphalt, etc., which constitute the mainstream to an appropriate particle size. And a plurality of crushers and a sorting device, and a plurality of transfer conveyors and discharge conveyors for moving and discharging the waste aggregate and shredded construction waste to each device.

The present invention aims to provide an improved crushing and sorting system to produce a better recycled aggregate by improving the system for crushing and sorting the conventional waste aggregates simple crushing and sorting, the present invention Construction waste shredding and sorting system according to the hopper 30 is stored a variety of waste aggregate, the first crusher 50 is connected to the hopper 30 to primarily crush the waste aggregate supplied from the hopper, and the first crusher A second crusher 60 which moves the waste aggregate crushed at 50 to pass through the screen S1 (hereinafter referred to as “first screen”) and crushes the crushed aggregate moved again by the transfer conveyor C2; Screen for sorting and sorting the crushed waste aggregate passed through the second crusher 60 by the crushed particle size (S2: hereinafter referred to as "the second screen"), and the second in the crushed aggregate passed through the second crusher 60 Screen (S2) It is configured to convey the crushing aggregate of the large particle size not excessively and then crushed again to supply it to the second screen S2, and a plurality of transfer conveyors C1, C2, C3 and C4 between each crusher and the screen. (C5) and the conveying conveyor (C6) (C7) is composed of a structure that is rotationally driven by the drive roller 35, in the detailed description of the present invention for the basic operation configuration of the conventional construction waste treatment apparatus or Since it is similar or identical to the recycling apparatus, a detailed description thereof will be omitted, and description will be given mainly on the features of the present invention.

1 and 2 are a plan view and a side cross-sectional view of the installation state for explaining the overall structure of the construction waste crushing and sorting system according to the present invention, the hopper 30 is provided with various waste aggregates stored on one side, the hopper ( The first crusher 50 for primary crushing the waste aggregate supplied from the hopper 30 is provided on the discharge side of the hopper 30, and the first crusher to transfer the waste aggregate crushed in the first crusher 50, etc. (50) The conveying conveyor (C1) is installed at the bottom or one side. Another conveying conveyor (C2) is orthogonally installed at the end of the conveying conveyor (C1), between the two conveying conveyor (C1) (C2) vibrating flat type first to selectively discharge the foreign matter contained in the crushed waste aggregate The screen (S1) is installed inclined, another second shredder 60 is installed at the distal end of the conveying conveyor (C2) to crush the waste aggregate moved to remove the foreign matter to the size required or less, The construction waste secondly shredded by the second shredder 60 is moved by the conveying conveyor C3, and the second screen S2 for sorting and sorting by the broken aggregate size is continuously installed, and the lower end of the second screen S2. There are a plurality of discharge conveyors (E1) (E2) (E3) for discharging the waste aggregate for each crushed size is installed.

On the other hand, the large aggregated crushed aggregate that is not discharged through the screening hole in the second screen (S2) is returned by the first conveying conveyor (C5) and crushed after the third crusher 70 so as to be sorted again. The aggregate is installed in the middle of the conveying conveyor (C5), the aggregates crushed in the third shredder (70) is dropped on the conveying conveyor (C5) again with the aggregates crushed in the second shredder (60) again the second screen (S2) It is made of a structure that can be entered into.

The second screen S2 installed between the second crusher 60 and the plurality of discharge conveyors E1, E2, and E3 has 0 to 8 mm, 9 to 25 mm, and 26 to crushed waste aggregates. The screen is formed by stacking up and down screens having different sorting holes, respectively, sorted by 40mm and sorted by the corresponding discharge conveyor. The construction waste of 41mm or more which is not discharged through the multilayer screen is the first conveying conveyor described above. After falling to (C5) it is made of a structure that is conveyed to the second screen (S2) after being broken again in the third shredder (70). That is, the second screen (S2) is provided with a screen having a sorting hole for discharging the crushed aggregate of 26-40 mm at the top end, and a screen with a sorting hole for discharging the crushed aggregate of 9-25 mm is formed at the bottom of the screen It is installed, and the screen formed with the screening hole for discharging 0 ~ 8mm stone powder or fine crushed aggregate at the lower end is installed up and down is configured to be selectively discharged by the crushed aggregate passed through each screen screening hole.

On the other hand, Figure 3 is a perspective view of a waste input transfer unit 80 for moving the construction waste supplied to the hopper 30 to the first shredder 50, the waste input transfer unit 80 is shown It is made to enable self-vibration by the power and is installed to be inclined downward in the direction of the first crusher 50 from the hopper 30 side so that the movement of waste can be made naturally. A waste feed guide 82 of a total narrow back light type is gradually formed toward the first shredder 50, and the waste aggregate is moved from the hopper 30 to the first shredder 50 between the waste feed guides 82. The soil contained is configured to be naturally detached and discharged by friction and collision.

And, at the lower end of the waste input and conveying unit 80, a conveying conveyor (C4) for transporting the soil dropped through the soil discharge hole (84) is installed (see Fig. 1), the soil conveying conveyor (C4) of At the end, fine soil powder of 13mm or less is discharged as it is through the discharge conveyor (E4), and a flat plate type vibrating third screen (S3) through which a circular selection hole for separating and sorting waste and foreign matter having a size of 14mm or more is provided. On the other end of the third screen (S3), a second conveying conveyor (C6) for conveying the waste aggregate filtered without being discharged from the third screen (S3) to the conveying conveyor (C1) is installed, the third screen ( S3) consists of a structure in which foreign matter removal means (M) is installed in the lower end of the end of the third screen (S3) inclined to remove the foreign matter contained in the waste aggregate falling in S3).

On the other hand, Figure 4 shows an example of the foreign matter removing means applied to the system of the present invention, which is installed to separate the foreign matter contained in the waste aggregate falling from the screen or conveying conveyor with wind, the screen or conveying conveyor of It is composed of a blower 47 and the foreign matter storage unit 40 which is installed on the opposite side of the blower 47 are respectively installed at the lower end to generate wind power.

The blower 47 is inclined upwardly so that the air blowing duct 49 is discharged upwards at a predetermined inclination, and the foreign matter inlet 41 of the foreign matter storage unit 40 has a lower end portion of the blower 47. It consists of an inclined surface 43 having an inclination of the vortex phenomenon in the foreign matter storage unit 40 after the wind of the blower 47 enters the foreign matter storage unit 40 on the rear wall of the foreign matter storage unit 40. Blowing outlet 42 having a height similar to the foreign matter entry port 41 so as to be discharged to the outside as it does not occur is formed through, the blower outlet 42 is the foreign matter storage unit (by the blowing force of the blower 47) ( The filter net 45 is installed so that foreign matters entered into 40 are not discharged together with the discharge of the wind.

In particular, the inclined surface 43 and the discharge duct 49 and the installation angle of the blower 47 formed at the lower end of the foreign matter entry port 41 are near the eight ridge line of the wind discharged from the discharge duct 49. It is installed to maintain the angle of impact on the foreign matters blown by the wind of the blower hit the inclined surface of the small foreign matter is increased along the inclined surface by the wind of the blower is continuously blown into the foreign matter storage unit, the heavy gravity along the slope It is downwardly configured to be dropped into the conveying conveyor installed in the lower end of the structure or to be moved back to the shredder, the installation direction of the discharge duct 49 of the blower 47 and the foreign matter inlet of the foreign matter storage unit 40 ( The installation angle of the inclined surface 43 of 41) is configured to be properly adjusted according to the installation distance of the wind power of the blower 47 or the blower and the foreign matter storage unit.

And, Figure 5 shows an embodiment of a flat screen applied to the present invention, the flat screen according to the present invention is a circular sorting hole is drilled, the screen of the conventional mesh structure is a rectangular sorting hole It has different characteristics from those made. In other words, the screen according to the present invention because the screening holes are made of a circular shape, when the crushed aggregates pass through the screen, only the crushed aggregates of a certain size are always passed through the screening and sorting, so that the particle size of the crushed aggregates is uniformly formed as a whole. And to enable the production of recycled aggregate usable as a construction subsidiary material.

In addition, each driving roller of the discharge conveyor and the conveying conveyor applied to the present invention is made of a magnetic material to prevent the discharge of the metal waste contained in the construction waste with the aggregate, the aggregate and metal waste falling from the discharge and transfer conveyor It is made of a structure that can be separated and discharged, the bulky metal or wood in the waste aggregate supplied to the first hopper 30 is configured so that the operator can be arranged separately before the first crusher supply, and discharged, each The device is provided with a separate drive motor or power transmission means, the detailed description of which is omitted.

On the other hand, with reference to the overall process diagram shown in Figure 6 will be described the operation and operation of the shredding and sorting system of construction waste according to the present invention.

The various waste aggregates transported to the waste treatment plant are stored in the hopper 30, and the waste stored in the hopper 30 is inclined so as to move to the first crusher 50 through the waste feeding and transporting unit 80 vibrating electrically. do.

The construction waste passing through the waste input and transport unit 80 enters into the waste transport guide 82 naturally due to mutual friction and collision caused by the self-oscillating waste input and transport unit 80. This desorption and the soil powder and the aggregate of small particle size detached from the waste falls to the lower portion and is discharged.

The interval between the waste transfer guide 82 is configured to be up to 70 mm to discharge the soil of less than 70 mm, the discharged soil and small aggregates are sorted 13 mm in diameter through the transfer conveyor (C5) The ball is supplied to the third screen S3 formed therethrough, and the fine tombs from the third screen S3 are directly dropped down through the selection holes and discharged through the discharge conveyor E4 installed at the bottom thereof, and the diameter of the selection holes. The larger aggregate falls on the second conveying conveyor C7 installed on the lower side of the other side of the third screen S3, and the foreign matter contained in the aggregate falling from the third screen S3 is the lower end of the third screen S3. Separated from the aggregate by the wind power of the foreign matter removal means (M3) installed in the foreign matter storage unit 40 is discharged.

On the other hand, the aggregate supplied to the first shredder 50 is primarily crushed and moved along the conveying conveyor (C1), the fine aggregate is filtered in the third screen (S3) and moved to the conveying conveyor (C7) 1 The secondary crushed aggregate is joined with the aggregate of the moving conveying conveyor (C1) and conveyed together.

Primary crushed aggregate is dropped onto the first screen (S1) installed at the end of the conveying conveyor (C1), the fine aggregate falls to the conveying conveyor (C2) of the lower portion through the sorting hole, to the first screen (S1) Jammed crushed aggregate is dropped to the other end of the first screen (S1) falling on the conveying conveyor (C2), foreign matter contained in the crushed aggregate by the foreign matter removal means (M) installed at the bottom of the first screen (S1) It is separated and discharged into the foreign matter storage unit 40.

The crushed aggregate passing through the first screen (S1) is supplied to the second crusher 60 again to the secondary crushing, and the secondary crushed aggregate to the second screen (S2) along the conveying conveyor (C3) Is moved. The crushed aggregate moved to the second screen (S2), the aggregate having a particle size larger than 40mm is filtered by the screen located at the top, and the aggregate smaller than the diameter of 40mm is discharged down through the screening hole and the second Aggregate between 26 and 40 mm is filtered out by the screen and discharged to the corresponding discharge conveyor (E3). Aggregate of 26 mm or less falls back to the lowest screen installed below it, and aggregate of 8 mm or less falls to the bottom of the third screen. And discharged through the discharge conveyor (E1), the aggregate between 9 to 25mm is filtered on the third screen and then discharged to the discharge conveyor (E2) by which the sorting of the crushed aggregate is made.

On the other hand, the aggregate of 41mm or more filtered from the screen installed at the top of the second screen (S2) is dropped on a separate conveying conveyor (C4) and moved to the conveying conveyor (C6), conveying conveyor (C6) from the conveying conveyor (C4) The foreign matter contained in the aggregate by the foreign matter removing means (M) is moved again after being separated) and then moved, and the aggregate larger than 41 mm moved to the conveying conveyor (C6) is supplied to the third crusher (70). After the third crushing is made to join the aggregate that passed through the second crusher 60 is moved to the second screen (S2) again and the sorting and discharge process is repeatedly made.

The crushing and sorting system of construction wastes according to the present invention comprising the operation process as described above is crushed and discharged in the state in which the soil is removed from the waste input and transport section 80 at the time of initial input of construction wastes, so the ground powder is crushed. Since it is not contained, it is possible to improve the quality of recycled crushed aggregates, and it is not necessary to have a washing facility to remove the soil contained in the aggregates as in the prior art, thereby improving the work efficiency by simplifying the device and crushing process. Of course, by simplifying the installation of the entire system there is an advantage that it is convenient for installation and maintenance and reduce the installation cost of the installation.

In particular, in the case of the waste input and transfer portion 80, the waste transfer guide 82 of the front side of the nip is formed, and a vibration generating means (not shown) is provided separately on the bottom thereof, and then continues. Since the vibration is generated, the waste aggregate supplied to the waste input and transport unit 80 is naturally moved by the waste transfer guide 82, and the larger particle size is moved to the first crusher, and the fine powder or aggregate powder is waste. Since it is dropped between the transfer guide 82 and moved through the transfer conveyor, by dispersing the amount of waste aggregate put into the first shredder to minimize the breakdown of the original work efficiency and frequent failure.

In addition, the foreign matter removal means applied to the construction waste shredding and sorting system according to the present invention has the advantage that can effectively separate the unseparated state of the foreign matter generated during the removal of the foreign matter by blowing.

In other words, the conventional foreign matter removing means is simply installed so that the discharge duct of the blower and the foreign matter entry port of the foreign matter storage unit are opposed to each other, so that the natural fall does not occur due to the small amount of foreign matter falling from the conveying conveyor or the screen and the wind strength of the blower. Aggregates, etc., were also discharged into the foreign matter storage unit, and small foreign matters entered into the foreign matter storage unit resulted in vortex phenomena generated in the foreign matter storage unit by the wind power of the blower, resulting in popping out of the waste aggregate. Although there was a problem of mixing again, in the present invention, the discharge duct of the blower is installed at a predetermined inclination upward, and the foreign matter scattered by the air is formed by forming an inclined surface at the bottom of the foreign matter inlet of the foreign matter storage unit so that the blowout and the foreign matter coming out of the discharge duct can be hit at the same time. Hit this slope The foreign matter or waste aggregate having a specific gravity greater than the wind strength falls along the inclined surface, and the foreign matter having a small specific gravity pushed down by the wind strength is configured to fall over the inclined surface and fall into the foreign matter storage unit. In other words, by providing a ventilation outlet on the rear wall of the foreign matter storage unit, the wind flowing into the foreign matter storage unit does not generate vortex and immediately exits to the outside. However, in the case of the finely-aggregated aggregate aggregated with the foreign matter by blowing the wind of the blower, it is possible to prevent the fine aggregate from being contained in the foreign matter since the strength of the blowing force decreases naturally after the impact on the inclined surface. .

In addition, since the conventional screen is formed with a net-shaped rectangular sorting hole, even if a sorting hole having a predetermined size is formed, the uniform crushed aggregate is not sorted and separated and discharged due to the difference in width between the right and left widths of the sorting hole and the diagonal direction. Problems have arisen in the production of recycled aggregates that meet the specifications due to the poor quality as aggregates, but the screen applied to the present invention has a through hole formed with a uniform diameter of a circular shape to enable uniform sorting and separate discharge of crushed aggregates. It is possible to produce recycled aggregates in accordance with the standard to improve the usability of the recycled aggregates, thereby improving the profitability of the operators as well as enable the smooth recycling of construction waste.

As described above, the construction waste crushing and sorting system according to the present invention improves the original crushing work efficiency of the crusher by the discharge of soil by removing the soil at the beginning of construction waste supply, reduce the failure of various devices, waste crushing process Air pollution around waste treatment facilities can be reduced by maximally suppressing various dusts generated in the waste treatment facility.By removing the problem of deteriorating the quality of crushed aggregates by including foreign matters in crushed aggregates By enabling the production of recycled aggregates suitable for the standard, it can provide a useful effect that can not only improve the profitability of the operators, but also greatly improve the reuse rate of construction wastes, thereby helping to solve the environmental problems caused by the landfill.

Claims (5)

A hopper in which various construction wastes are stored, a plurality of first and second shredders sequentially disposed to shred the construction wastes supplied from the hopper below a certain particle size, and are installed between the plurality of shredders to transfer and shred the construction wastes. A plurality of conveying and discharging conveyors for sorting and discharging each of the used construction wastes, and circular sorting holes having the same diameter are formed through one metal plate to allow uniform sorting and discharging of the crushed aggregates, and between or between the conveying and conveying conveyors. In the crushing and sorting system of construction wastes comprising a plurality of first and second vibration screens installed between the conveyors and forced blowing foreign matter removing means to crush the construction waste and to sort according to the crushing granularity , The second screen has different sorting holes formed to be discharged to the recycled aggregate of 0-8mm, 9-25mm, 26-40mm, respectively, according to the particle size of the crushed construction waste is installed in the upper and lower double layers, the double layer The third shredder is provided on the conveying conveyor so that the construction waste of 41mm or more, which is not discharged through the screen made of waste, can be crushed again and supplied to the second screen. Construction waste shredding and sorting system, characterized in that it is configured to improve. The method of claim 1, Between the hopper and the first shredder is provided with a vibratory waste feeder so that the construction waste of the hopper is naturally supplied to the first shredder and the soil contained in the waste can be detached in advance before the first shredder is introduced, the waste input The conveying part is a construction waste shredding and sorting system, characterized in that the waste feed guide of the total narrow back light type is gradually increased from the hopper side to the first crusher side. The method of claim 2, A soil conveying conveyor is installed at the lower end of the waste feeding and conveying unit, and a soil conveying conveyor is installed at the end of the soil conveying conveyor, and a flat screen vibrating screen having a circular sorting hole is formed between the soil conveying conveyor and the discharge conveyor. Is installed, the other end of the screen is a conveying conveyor for conveying a large particle sized waste not discharged through the sorting hole to the conveying conveyor is installed, the forced blowing foreign matter removing means is installed between the screen and the conveying conveyor. Characterized construction waste crushing and sorting system. The method according to claim 1 or 3, The foreign matter removing means is composed of a foreign matter storage unit installed on the opposite side of the blower and the blower, the blower duct of the blower is formed to be inclined upward so that the blown air is discharged upward obliquely, waste by the blown air discharged from the upwardly inclined blower duct After the foreign matter contained in the emergency collides the material with a small specific gravity falls to the foreign matter storage portion and the material with a large specific gravity fall down the foreign matter entrance portion of the foreign matter storage portion characterized in that the inclined surface having a predetermined slope Construction waste crushing and sorting system. The method of claim 4, wherein At the top of the rear wall of the foreign matter storage unit, that is, at a height similar to the foreign matter entry port, a blower outlet is formed so that the wind entered from the blower is naturally discharged to the outside of the foreign matter storage unit, and a filtering network is provided at the blower outlet to prevent foreign matter from being discharged together. Construction waste crushing and sorting system, characterized in that installed.