KR102521523B1 - Air circulating typed wind power foreign body separating apparatus - Google Patents

Abstract

According to the present invention, an air circulation-type wind power sorting device comprises: a wind separation means that has a built-in vibration separator so that aggregates falling from the transfer conveyor fall to the bottom of the vibration separator and foreign substances are levitated to the top of the vibration separator by circulating air; a rotary valve that is connected to the top and bottom of the wind power selection means, respectively, supplies and discharges a certain amount of aggregate input from the transfer conveyor toward the vibrating separator and the aggregate falling to the bottom of the vibrating separator, and at the same time suppresses dust generated inside the wind-powered separator from scattering outside the wind-powered separator; a dust collecting means configured on one side of the force sorting means and allowing foreign substances floating to the upper part of the vibrating separator by circulating air to flow in and be collected and removed; and an air circulation means that is connected between the wind power sorting means and the dust collection means, and causes foreign matter among the aggregates that have fallen into the vibrating separator to float to the top of the vibrating separator by circulating air from the bottom to the top of the vibrating separator and then moves to the dust collecting means and collects the dust.

Description

Air circulating typed wind power separating apparatus {Air circulating typed wind power foreign body separating apparatus}

The present invention relates to an air circulation type wind power separator, and more particularly, in the process of extracting recycled aggregate from construction waste generated during the demolition of a building or civil engineering structure, foreign substances mixed with construction waste are removed using wind power by air circulation. It relates to an air circulation type wind power sorting device capable of sorting and improving the recycling efficiency of recycled aggregate.

Many structures, that is, bridges, roads, and various buildings that have been created in the process of urbanization and industrialization, are gradually deteriorating over time. In particular, recently, reconstruction and redevelopment are actively promoted in many areas to improve residential culture. There is a situation.

A lot of construction waste is generated in the process of dismantling, reconstruction, and redevelopment of these old structures. If such construction waste is buried as it is, it is difficult to secure a landfill site, the landfill cost is high, and it has a huge impact on the environment. Various countermeasures for recycling and processing construction wastes have been devised in two aspects, protection of the natural environment and recycling of resources, and various treatment devices for construction wastes are being developed in Korea.

Therefore, in terms of environment-friendliness and recycling of resources, construction waste generated during the dismantling of construction and building structures is not landfilled, but is collected in a designated place and then deposited in the crushing process, the foreign matter sorting process, the recycled aggregate and mortar sorting process, and the surface of the recycled aggregate. It is produced as a high-quality resource through a series of intermediate processes such as the attached mortar peeling process.

On the other hand, construction waste contains mixed impurities including waste wood, waste synthetic resins such as Styrofoam, metals such as reinforcing bars, waste paper, and waste fibers used as cement reinforcing agents. Construction waste in the wastewater treatment process is separated for incineration and recycling.

Here, in the process of sorting foreign substances to obtain most of the recycled aggregate, the wet or dry recycled aggregate production facility usually crushes construction waste by a jaw crusher and transfers it by a conveyor. It basically has a structure in which the same metal material is separated, while some soil and foreign matter are separated by the vibrating screen, and then some light garbage is separated by a blower installed on one side of the vibrating screen in the process of dropping directly from the vibrating screen. .

On the other hand, as shown in FIG. 1, a conventional recycled aggregate foreign material sorting device such as the vibrating screen includes a mounting frame unit 110 and a vibration generating unit configured on the upper part of the mounting frame unit 110 to generate vibration. 120, the vibration transmission unit 130 configured in the vibration generating unit 120 and receiving the vibration, and configured to be inclined on the upper side of the vibration transmission unit 130 and transmitted by the vibration transmission unit 130. When the recycled aggregate (1) injected into the upper part through the upper part moves to the lower part, the recycled aggregate (1) of a predetermined size or less falls intensively to the lower side of the vibration transmission unit 130 and the foreign matter 2 is discharged to the outside through the lower part. Recycled aggregate 1 and foreign matter 2 falling from the deck unit 140 and the vibration deck unit 140 through the vibration transmitted by the vibration transmission unit 130 and configured to be inclined on the lower side of the vibration transmission unit 130 ) includes a vibrating screen unit 150, etc., which allows recycled aggregate (1) of a predetermined size or less to fall intensively to the lower side of the vibration transmission unit 130 when moving to the lower end and foreign substances (2) to be discharged to the outside through the lower end. are doing

However, since the conventional recycled aggregate foreign material sorting device has an open state in which the upper portion of the vibrating deck unit 140 is exposed to the outside, when the recycled aggregate 1 is introduced into the vibrating deck unit 140 from a conveyor belt or the like, or vibration When the deck unit 140 vibrates, scattering dust is generated at the top of the vibrating deck unit 140, and thus, as the environment is polluted, a separate configuration for collecting scattering dust is required, which requires a lot of cost. .

(Patent Document 0001) Registered Patent No. 10-0968793

(Patent Document 0002) Registered Patent No. 10-1284933

(Patent Document 0003) Registered Patent No. 10-0838259

Therefore, an object of the present invention is to configure rotary valves at the top and bottom of the wind power sorting means with a built-in vibration sorter, so that dust generated when the aggregate is input from the transfer conveyor and the sorted aggregate is discharged is not scattered to the outside of the wind power sorting means. It is to provide an air circulation type wind power separator that can prevent.

In addition, an object of the present invention is to circulate air toward the vibrating separator by the air circulation means configured between the wind power sorting means and the dust collecting means constructed on one side of the wind power sorting means, so that the dust generated during the aggregate sorting of the vibrating sorter It is to provide an air circulation type wind power separator that can be dust collected and removed.

Meanwhile, the object of the present invention is not limited to the above-mentioned object, and other objects not mentioned above will be clearly understood by those skilled in the art from the description below.

According to the present invention, the vibration separator is built-in, so that the aggregate falling from the transfer conveyor falls to the bottom of the vibration separator, and the foreign matter is floated to the top of the vibration separator by the circulating air; The top and bottom of the wind power separator are communicated, respectively, and the aggregate input from the transfer conveyor toward the vibration separator and the aggregate falling to the bottom of the vibration separator are supplied and discharged in a certain amount, and at the same time, the dust generated inside the wind power separator is separated by wind power. a rotary valve that suppresses scattering to the outside of the means; a dust collecting means which is configured on one side of the wind power sorting means and allows foreign substances floated to the upper part of the vibrating sorter by the circulating air to be introduced and collected and removed; And it is configured to be connected between the wind power separator and the dust collecting means, and air is circulated from the bottom of the vibration separator to the top so that foreign substances among the aggregates that have fallen to the vibration separator float up to the top of the vibration separator and then move to the dust collecting means and collect the dust. There is provided an air circulation type wind power separator comprising an air circulation means to do.

Here, the wind power sorting means includes a wind power sorting housing providing a predetermined volume; Openings are formed at positions opposite to the top and bottom of the wind power sorting housing, and the upper opening and the lower opening are installed in communication with each rotary valve; It is installed to be inclined from the upper opening formed to face the upper and lower ends of the wind power sorting housing toward the lower opening, flattening the aggregate input from the upper opening through vibration and falling towards the lower opening to sort the aggregate; Vibration sorter; An air outlet formed open on one side of the lower opening of the wind power sorting housing and through which the venturi duct of the air circulation means is installed so that air of strong pressure is blown to the lower end of the vibration sorter; And air discharge that is configured on one side of the upper opening opposite to the air outlet of the wind power sorting housing, and the air discharge duct of the air circulation means is installed in communication so that foreign substances floated by the air blown at the bottom of the vibration separator are moved to the air discharge duct. It is desirable to include a hood.

In addition, the vibrating separator, a flat plate for flattening the aggregate introduced from the top opening; a vibrating screen extending from the flattening plate and allowing the aggregate to be moved in a flattened state by the flattening plate to be sorted while falling toward the lower opening; a rubber plate configured between the top of the flat plate and the top opening to prevent aggregate from falling to the outside of the top of the flat plate; a mounting wire allowing the flat plate and the vibrating screen to be mounted and fixed to the lower part of the upper opening; and a vibration generator configured under the flat plate and the vibrating screen to vibrate the flat plate and the vibrating screen.

In addition, the rotary valve, the rotary valve casing is installed in communication with the upper opening or the lower opening; An impeller installed in the rotary valve casing at an angle of about 45 degrees and rotated to enable input or discharge of aggregate; and a rotational motor configured outside the rotary valve casing and configured to rotate a rotational shaft comprising an impeller.

In addition, the air circulation means may include a connection duct connected to the air supply duct of the dust collecting means and into which air discharged from the cyclone hopper is introduced; A venturi duct located at the bottom of the vibrating separator at one side of the lower opening of the wind separating housing while penetrating the air outlet of the wind separating unit to inject air introduced from the connection duct with strong pressure so that foreign substances float to the top of the vibrating separator; An air supply fan configured at a joint between the connecting duct and the venturi duct to circulate air; and an air discharge duct that is connected between the air discharge hood of the wind power separator and the inlet duct of the dust collecting means to move foreign substances floating on the top of the vibration separator to the dust collecting means.

Therefore, according to the present invention, the rotary valves are configured at the top and bottom of the wind power sorting means in which the vibration sorter is built, so that the dust generated when the aggregate is input from the transfer conveyor and the sorted aggregate is discharged is not scattered to the outside of the wind power sorting means. can avoid

In addition, it is possible to circulate the air blown toward the vibrating separator between the wind power separator and the dust collecting means configured on one side of the wind separator, so that the dust generated when the aggregate is sorted by the vibrating separator can be collected and removed.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing a conventional vibration sorting device;
2 and 3 are a side view and a plan view showing an air circulation type wind power separator according to a preferred embodiment of the present invention;
Figure 4 is a side view showing the configuration of the wind power sorting means in the air circulation type wind power sorting device of Figure 2;
Figure 5 is a drawing taken out of a part of the configuration of the air circulation means in the air circulation type wind power sorting device of FIG. 2; and
6 and 7 are views showing the configuration of a rotary valve in the air circulation type wind separator of FIG. 2 .

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

As shown in FIGS. 2 to 7, the air circulation type wind power separator according to a preferred embodiment of the present invention has a built-in vibration separator 210, and the aggregate falling from the transfer conveyor 220 is a vibration separator 210 ) The wind power sorting means 230 and the upper and lower ends of the wind power sorting means 230 communicate with each other and transfer conveyor 220 Aggregate introduced toward the vibrating separator 210 and the aggregate falling to the bottom of the vibrating separator 210 are supplied and discharged in a certain amount, and at the same time, the dust generated inside the wind power separator 230 is removed from the outside of the wind power separator 230 A rotary valve 240 for suppressing scattering, and a dust collecting means 250 configured on one side of the wind power sorting means 230 and allowing foreign substances floated to the top of the vibration sorter 210 by the circulating air to flow in and collect and remove dust. And it is configured to be connected between the wind power separator 230 and the dust collecting means 250, and foreign matter among the aggregates dropped to the vibration separator 210 is removed through the vibration separator 210 through the circulation of air from the bottom to the top of the vibration separator 210 ( 210) includes an air circulation means 260 and the like for moving to the dust collecting means 250 and collecting dust after being floated to the top.

The wind power separator 230 has a built-in vibration separator 210 so that aggregates falling from the transfer conveyor 220 fall to the bottom of the vibration separator 210, and foreign substances are transferred to the air circulated by the air circulation means 260. A wind power sorting housing 231, a wind power sorting housing ( 231) are formed at opposite positions to the upper and lower ends of the upper and lower openings 232 and lower openings 233 and the upper and lower ends of the wind power sorting housing 231, respectively, where the rotary valve 240 is installed in communication with each other. It is installed to be inclined from the upper opening 232 toward the lower opening 233 so that the aggregate introduced from the upper opening 232 is flattened through vibration and falls toward the lower opening 233 so that the aggregate is sorted Vibration sorter 210, the lower opening 233 of the wind power sorting housing 231 is formed open on one side, and the venturi duct 262 of the air circulation means 260 is installed through it, so that the air of strong pressure at the bottom of the vibration sorter 210 It is configured on one side of the air outlet 234 for blowing and the upper opening 232 opposite to the air outlet 234 of the wind power sorting housing 231, and the air discharge duct 264 of the air circulation means 260 is installed in communication with An air discharge hood 235 and the like are included so that foreign substances floated by the air blown at the lower end of the vibration separator 210 are moved to the air discharge duct 264.

Here, in the wind power sorting housing 231, the air discharge hood 235 is in vertical communication with the lower end of the vibration sorter 210 installed while having an inclination from the upper opening 232 toward the lower opening 233. At this time, As the venturi duct 262 is positioned so as to be close to the lower end of the vibratory separator 210 of the wind power sorting housing 231 through the air outlet 234, the air pressure strongly injected from the venturi duct 262 is applied to the vibratory separator ( 210), there is a problem in that the speed of air is reduced while being lowered by the lower end, so that foreign substances cannot float to the air discharge hood 235.

Accordingly, one side surface 231a of the wind power sorting housing 231 in communication with the air exhaust hood 235 rises to the air exhaust hood 235 in a state where the air pressure strongly injected from the venturi duct 262 is not reduced. It is preferable to protrude to the outer surface in order to provide an expanded volume so as to secure an air circulation path as much as possible.

Vibration sorter 210 is installed to be inclined from the upper opening 232 of the wind power sorting housing 231 toward the lower opening 233, flattening the aggregate input from the upper opening 232 through vibration, while lower opening 233 ) As a means for sorting the aggregate by falling toward the flat plate 211 for flattening the aggregate injected from the top opening 232, it is configured to extend in a straight line to the flat plate 211 and to the flat plate 211 A vibrating screen 212 that allows the aggregate moved in a flattened state to be sorted as it falls toward the lower opening 233, and is configured between the upper end of the flat plate 211 and the upper opening 232 so that the aggregate moves through the flat plate 211 ), a rubber plate 213 to prevent the top from falling to the outside, a mounting wire 214 and a flat plate 211 to allow the flat plate 211 and the vibrating screen 212 to be placed and fixed to the lower part of the upper opening 232. ) and a vibration generating unit 215 configured under the vibrating screen 212 so that the flat plate 211 and the vibrating screen 212 vibrate.

Therefore, according to the wind power separator 230, the vibration separator 210 is built in so that the aggregate falling from the transfer conveyor 220 falls to the bottom of the vibration separator 210, and foreign substances are circulated by the air circulation means 260 It is possible to sort aggregates and foreign substances by allowing them to float to the top of the vibrating sorter 210 by air.

The rotary valve 240 is configured to communicate with the upper opening 232 and the lower opening 233 of the wind power separator 230, respectively, and the aggregate and the vibration separator ( 210) As a means for supplying and discharging a certain amount of aggregate falling down and at the same time suppressing dust generated inside the wind power sorting means 230 from scattering to the outside of the wind power sorting means 230, the top opening 232 It can be divided into an upper rotary valve configured and a lower rotary valve configured in the lower opening 233.

Here, the rotary valve 240 is installed at an angle of about 45 degrees to the rotary valve casing 241 and the rotary valve casing 241 installed in communication with the upper opening 232 or the lower opening 233, and is one-way. The impeller 242, which is rotated to enable the input or discharge of aggregate, and the rotary motor 243, which is configured outside the rotary valve casing 241 and rotates the rotation shaft composed of the impeller 242 through a sprocket and a chain, etc. includes

Therefore, according to the rotary valve 240, as eight impellers 242 of the rotary valve 240 are configured at an angle of about 45 degrees, the upper opening 232 or the lower opening when rotated by the rotary motor 243 ( 233) always has a closed structure, and dust generated inside the wind power separator 230 and air circulated in the air circulation means 260 are discharged to the outside of the wind power separator 230 when the aggregate is inputted and discharged. that can be suppressed.

The dust collecting means 250 is configured on one side of the wind power sorting means 230 and is a means for introducing and collecting and removing foreign substances floated to the top of the vibration sorter 210 by the air circulating by the air circulation means 260. , The cyclone hopper 251 having an upper and lower narrow structure, an air circulation means 260 having an opening formed on one side of the upper end of the cyclone hopper 251 and communicating with the air discharge hood 235 of the wind power sorting means 230 When the air discharge duct 264 communicates with the air circulating by the air circulation means 260 and foreign substances are introduced, the foreign substances flow into the cyclone hopper 251 and are collected and removed from the lower part of the cyclone hopper 251. An opening is formed at the top of the duct 252 and the cyclone hopper 251 and communicates with the venturi duct 262 of the air circulation means 260 penetrating the air outlet 234 of the wind power separator 230, together with foreign substances. The cyclone hopper ( 251) includes a discharge hopper 254 for discharging the foreign matter collected to the outside.

Therefore, according to the dust collecting means 250, it is configured on one side of the wind power sorting means 230 and the air circulating by the air circulation means 260 allows foreign substances floating on the top of the vibration separator 210 to be introduced and dust collected and removed. can

The air circulation means 260 is configured to be connected between the wind power sorting means 230 and the dust collecting means 250 and falls to the vibration sorter 210 through air circulating from the bottom to the top of the vibration sorter 210. As a means for moving and collecting dust in the dust collecting means 250 after allowing foreign matter among the aggregates to float to the top of the vibration separator 210, it is connected to the air supply duct 253 of the dust collecting means 250 and is removed from the cyclone hopper 251. It is located at the bottom of the vibrating separator 210 on one side of the lower opening 233 of the wind power sorting housing 231 while penetrating the connection duct 261 through which the discharged air is introduced and the air outlet 234 of the wind power sorting means 230. It is composed of a venturi duct 262 that ejects the air introduced from the connection duct 261 with strong pressure so that foreign substances float to the top of the vibration separator 210, and the connection between the connection duct 261 and the venturi duct 262 It is connected between the air supply fan 263 for circulating air and the air discharge hood 235 of the wind power separator 230 and the inlet duct 252 of the dust collecting means 250, and foreign substances floated to the top of the vibration separator 210. It includes an air discharge duct 264 and the like to be moved to the dust collecting means 250.

Here, since the venturi duct 262 is located below the vibrating screen 212 of the vibrating separator 210, the air is discharged from the aggregates that are sorted by the vibrating screen 212 and fall into the lower opening 233. There is a problem with getting inside.

Accordingly, at the discharge end of the venturi duct 262, the mesh 262a is closed to prevent the inflow of aggregates falling from the vibrating screen 212, and at the same time, when the discharge end is viewed from the side, the length of the upper end is slightly greater than the length of the lower end. It is preferably configured to be long and inclined at an angle of about 10 degrees.

In addition, it is preferable that the volume of the venturi duct 262 narrows toward the discharge end so that air is injected with strong pressure through the discharge end.

Therefore, according to the air circulation means 260, it is configured to be connected between the wind power sorting means 230 and the dust collecting means 250, and air is circulated from the bottom of the vibration sorter 210 toward the top of the vibration sorter 210. Among the fallen aggregates, foreign substances may be allowed to float to the top of the vibrating separator 210, and then moved to and collected by the dust collecting means 250.

Hereinafter, the operation of the air circulation type wind power separator having the above configuration will be described.

First, after the aggregate transported from the conveying conveyor 220 is dropped into the rotary valve 240 installed in the upper opening 232 of the wind power sorting means 230, the vibration sorter 210 installed inside the wind power sorting means 230 are put in successively.

Thereafter, the aggregate introduced into the vibrating separator 210 is flattened by the flattening plate 211 and then moved to the vibrating screen 212 .

At this time, air is injected under strong pressure by the venturi duct 262 of the air circulation means 260 to the bottom of the vibrating screen 212 of the wind power separator 230.

Accordingly, the aggregate moved to the vibrating screen 212 falls to the bottom of the vibrating screen 212, and then to the rotary valve 240 installed at the lower opening 233 of the wind power separator 230, and then to the outer packaging. It is continuously selectively discharged by means

In addition, the foreign matter moved along with the aggregate to the vibrating screen 212 is lifted to the top of the vibrating screen 212 by the strong pressure air injected from the venturi duct 262, and then the air discharge duct of the air circulation means 260 It is moved to the cyclone hopper 251 of the dust collecting means 250 along (264).

Thereafter, foreign substances are collected and removed by the cyclone hopper 251 of the dust collecting means 250, and only the air from which the foreign substances are removed flows along the connection duct 261 by the air supply fan 263 of the air circulation means 260. After being moved to the venturi duct 262, the process of spraying with strong pressure to the bottom of the vibrating screen 212 is repeated.

Therefore, according to the above, the rotary valve 240 is configured at the top and bottom of the wind power sorting means 230 in which the vibration sorter 210 is built, respectively, so that when the aggregate is input from the transfer conveyor 220 and the sorted aggregate is discharged The generated dust can be prevented from scattering to the outside of the wind power sorting means 230.

In addition, the air blown toward the vibrating separator 210 is circulated in the wind power separator 230 and the dust collecting means 250 configured on one side of the wind separator 230, so that the vibration separator 210 generated when sorting the aggregate Dust collection can be removed.

Although specific embodiments have been described in the present invention described above, various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the invention should not be determined by the described embodiments, but by the equality of the claims and claims.

Claims (6)

Vibration sorter 210 is built-in so that aggregates falling from the transfer conveyor 220 fall to the bottom of the vibration sorter 210 and foreign substances are floated to the top of the vibration sorter 210 by the circulating air. 230); The upper and lower ends of the wind power separator 230 are communicated with each other, and the aggregate input from the transfer conveyor 220 toward the vibration separator 210 and the aggregate falling to the bottom of the vibration separator 210 are supplied and discharged in a certain amount, At the same time, a rotary valve 240 for suppressing dust generated inside the wind power sorting means 230 from scattering to the outside of the wind power sorting means 230; a dust collecting means 250 configured on one side of the wind power sorting means 230 and allowing foreign matter floated to the upper part of the vibrating sorter 210 by the circulating air to be introduced and collected and removed; And it is configured to be connected between the wind power separator 230 and the dust collecting means 250, and foreign matter among the aggregates dropped to the vibration separator 210 is removed through the vibration separator 210 through the circulation of air from the bottom to the top of the vibration separator 210 ( 210) In the air circulation type wind power sorting device including an air circulation means 260 for moving and collecting dust to the dust collecting means 250 after floating to the top,
The wind power selection means 230,
Wind power sorting housing 231 providing a predetermined volume; An upper opening 232 and a lower opening 233 formed at positions opposite to the upper and lower ends of the wind power sorting housing 231 and in which the rotary valve 240 is installed in communication with each other; It is installed so as to be inclined toward the lower opening 233 from the upper opening 232 formed to face the upper and lower ends of the wind power sorting housing 231, flattening the aggregate input from the upper opening 232 through vibration while lowering the opening ( 233) to fall toward the vibration sorter 210 to sort the aggregate; Air that is formed open on one side of the lower opening 233 of the wind power sorting housing 231 and the venturi duct 262 of the air circulation means 260 is installed through to blow air with strong pressure at the bottom of the vibration separator 210 tuyere 234; And it is configured on one side of the upper opening 232 opposite to the air outlet 234 of the wind power sorting housing 231, and the air discharge duct 264 of the air circulation means 260 is installed in communication with the bottom of the vibration separator 210. It includes an air discharge hood 235 that allows foreign matter floated by the blown air to move to the air discharge duct 264,
The vibration sorter 210,
a flattening plate 211 to flatten the aggregate injected from the upper opening 232; a vibrating screen 212 extending from the flattening plate 211 and sorting the aggregate while being flattened by the flattening plate 211 while falling toward the lower opening 233; a rubber plate 213 configured between the top of the flat plate 211 and the top opening 232 to prevent aggregate from falling to the outside of the top of the flat plate 211; a mounting wire 214 allowing the flat plate 211 and the vibrating screen 212 to be mounted and fixed to the lower part of the upper opening 232; and a vibration generator 215 configured under the flat plate 211 and the vibrating screen 212 to vibrate the flat plate 211 and the vibrating screen 212. Device. delete delete The method of claim 1, wherein the rotary valve 240,
a rotary valve casing 241 installed in communication with the upper opening 232 or the lower opening 233;
an impeller 242 installed in the rotary valve casing 241 at an angle of about 45 degrees and rotated to enable input or discharge of aggregate; and
An air circulation type wind power sorting device comprising a rotation motor 243 configured on the outside of the rotary valve casing 241 and rotating a rotation shaft in which the impeller 242 is configured. The method of claim 1, wherein the air circulation means 260,
a connection duct 261 connected to the air supply duct 253 of the dust collecting means 250 and into which air discharged from the cyclone hopper 251 flows;
It is located at the bottom of the vibrating separator 210 on one side of the lower opening 233 of the wind power sorting housing 231 while penetrating the air outlet 234 of the wind power sorting means 230, and the air introduced from the connection duct 261 is subjected to strong pressure. a venturi duct 262 that ejects foreign matter to the upper part of the vibration separator 210;
An air supply fan 263 configured at a connection portion between the connection duct 261 and the venturi duct 262 to circulate air; and
Air that is connected between the air discharge hood 235 of the wind power separator 230 and the inlet duct 252 of the dust collecting means 250 so that foreign substances floating on top of the vibration separator 210 are moved to the dust collecting means 250 Air circulation type wind separator, characterized in that it comprises a discharge duct (264). According to claim 5,
At the discharge end of the venturi duct 262, a mesh 262a is finished to prevent the inflow of aggregate falling from the vibrating screen 212, and at the same time, the length of the upper end is longer than the length of the lower end when viewed from the side, so that the slope Air circulation type wind selector, characterized in that formed so as to be.

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