KR100722568B1 - The method and apparatus for seperating dust from recyclic aggregate and sand using twin fan structured cyclone - Google Patents

Abstract

The present invention relates to a separation method for obtaining high-quality recycled aggregates or soil by using a cyclone to remove foreign matter in the recycled aggregates or soil in the production equipment of recycled aggregates.

Method for separating foreign matter in the circulating aggregate or soil powder of the present application is characterized in that the separation method using a cyclone, the inflow step of receiving the treatment object through the upper inlet chute in the structure of the cyclone; A dispersion step of dispersing the influent in the same amount using a distributor; Blowers are installed on both sides of the cyclone to control and blow air from both sides; vortices are formed inside the cyclone, and heavy particles are discharged downward along the inner wall of the cyclone, and light debris are collected into the cyclone by an upward airflow. Disclosed are a method and an apparatus for separating foreign matter in a circulating aggregate or soil provided, including transferring to an upper outlet.

The cyclone is provided as a primary, secondary double cyclone device to improve the separation effect is disclosed a method and apparatus for separating foreign matter in circulating aggregate or soil.

Circulating aggregate, soil powder, foreign substance, cyclone, blower

Description

The method and apparatus for seperating dust from recyclic aggregate and sand using twin fan structured Cyclone}

1: Front view of a treatment system for separating foreign matter in soil powder

2 is a plan view of the processing system of FIG.

Figure 3: Schematic diagram showing the flow of fluid inside the cyclone

******* Explanation of symbols on major symbols in the drawings *******

10 Cyclone Cylindrical Part 11 Raw Material Inlet Chute

12: Distributor 13: inflow control valve

14 blower 15: overflowfinder A

20: cyclone cone 21: cone vertex

30: primary cyclone 40: secondary cyclone

41: second cyclone vertex 42: overflowfinder B

50: pressure release tank 51: pressure release tank outlet

52: transfer piping 53: manure membrane

54: blowing piping 60: dust collector

70: Facilities 71: Blower

72: chimney 80: foreign matter storage tank

90: soil powder tank. 91: raw soil conveying conveyor

92: refined soil conveying conveyor 93: foreign matter conveying conveyor

The present invention relates to a method and apparatus for producing high-quality recycled aggregates by efficiently separating soil and foreign substances generated in the process of crushing construction waste or waste concrete in producing recycled aggregates from construction wastes.

When looking at the distribution of construction waste, concrete lumps, rebars, various foreign substances, and a considerable amount of soil (about 30%) are mixed and brought in.For the selection by manpower, waste wood, vinyl, cloth, etc. It will be possible to select a foreign substance having a volume, but the pulverized foreign substance such as waste styrofoam granules, which has become smaller, will not be able to select a manpower.

The government regulates the volume of foreign matter contained in recycled aggregates and soils to be less than 1% in volume ratios. This company uses the total volume ratio of foreign matters in recycled aggregates and soils to meet the government's quality certification system. We started with the task of finding an efficient separation method for producing less than 1% of.

In addition, in the context of environmental preservation, in the situation that the waste of resources is obtained by collecting and using crushed gravel (crushed stone) from Seoksan, which is a limited national land resource, or imported aggregates from foreign countries, foreign substances contained in recycled aggregates are used. By minimizing the content, it is recycled as a safer base material for road works, and in the case of soil powder, it is difficult to separate soil and foreign substances contained in soil powder. In consideration of the increasing situation, the foreign matter is separated and removed from the soil waste, and the quality soil is reused for covering soil.

As a separation device for sorting foreign materials currently used by general recycled aggregate producers, air is blown by using a blower at the drop point of the screen, which is a sorting device, at the end of the belt conveyor to separate the circulation aggregate and foreign matter, or move on the belt conveyor. In the upper part of the aggregate mixture is sucked into the vacuum device is used to separate the foreign matter.

The method of blowing on the belt conveyor or screen is that if the size of the circulating aggregate is large, it is possible to remove light foreign matters by blowing, but if it is small, it is difficult to remove foreign substances such as wet wood or plastic, which has a high specific gravity. If the amount of airflow is increased, the aggregate aggregate is blown away with foreign matter, and when the input amount is large, the fall thickness of the aggregate becomes thick, and the curtain phenomenon caused by the aggregate is not properly selected.

The foreign matter separation method by suction on the conveyor has the problem that the foreign material laid under the aggregate cannot be sucked out by the aggregate even if the suction amount is large, and the separation effect is not great and the installation price and equipment area should be large even though the power unit needs to be large. Has

In particular, soil powder has a specific gravity less than that of circulating aggregates, so it is more difficult to separate it from foreign matters. However, when the general blower is used or a vacuum device, the dust is hardly effectively separated from the suction port.

The purpose of the present application is to provide a method and apparatus for separating soil and foreign matter to produce the amount of foreign matter in the recycled aggregate or soil in order to meet the quality certification system of recycled aggregate.

In the conventional method for producing recycled aggregate and its apparatus, a separate device for separating soil and foreign matter has never been used, but in the present application, the mixture of soil and foreign matter in the upper part of the cyclone using a primary and secondary double cyclone apparatus is used. The purpose of the present invention is to provide a separation method and a device for maximizing the separation effect of soil and foreign substances by controlling the amount of blowing while blowing the air in both directions of the cyclone.

The cyclone device of the present application can be provided using a double cyclone such that foreign matter that has not been removed in the primary cyclone is removed again in the secondary cyclone.

The present application is a technique for separating foreign matter contained in recycled aggregates or soil powder, and in particular, a method for separating foreign matter such as wood chips, fibers or paper shavings, styrofoam grains, which are crushed into small particles in aggregate or soil powder. It is about.

In general, a cyclone is a separator using centrifugal force generated by a swirling flow of a fluid, and is used for separation by a difference in particle size or specific gravity of solid particles suspended in a gas. The body of a cyclone is usually a cylinder. Separation device is provided consisting of a part and a cone.

The present application uses the cyclone principle, but injects the soil containing foreign matter from the upper part of the cyclone, controls the amount of air blowing in both sidewall directions of the cyclone, and makes the air blow to separate the foreign matter contained in the soil. To provide a method and device for separating foreign matter to maximize.

For example, the foreign material separating apparatus of the present application can be applied to the aggregates and soil components, although it is primarily classified as aggregates, but about 2 to 5% of the soils include foreign substances such as wood chips, fibers or paper chips, and styrofoam granules. When the chorizo containing about 2 to 5% of the foreign matter is transferred to the upper part of the cyclone, it is dropped through the two-way chute attached to the inside of the cyclone and from the distributor mounted at the center of the two-way chute to both chutes. The same amount is dispersed to be added.

At this time, two blowers are installed on both inclined sides of the cylindrical side wall of the cyclone to supply air at a constant super speed, thereby forming a vortex inside the cyclone to treat soil containing foreign matters, thereby causing a high density of soil particles (solid matter). Particles) are gathered by the centrifugal force and gathered on the conical wall and settled downward so as to be discharged from the vertex side of the cone. It is to provide a method and apparatus for separating foreign matter in soil having a structure that is discharged to the next step through the pipe (overflowfinder) inserted from the top of the cyclone cylinder portion forming a.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present disclosure may be specifically applied to a field to be implemented with reference to the drawings.

In FIG. 1, a system for separating foreign matters in soil for achieving the purpose of the present disclosure is disclosed. The primary cyclone 30 used in the present application has an upper portion as a cylindrical portion 10 and a lower portion as a cone portion 20. In the conventional cyclone structure provided and made up, the soil material to be treated is introduced through the inlet chute 11 through the transfer Kenvey A 91 on the primary cyclone 30 and the inflowed material is uniformly distributed through the distributor 12. If the flow rate is distributed to the inside of the cyclone and needs to adjust the inflow rate, the inflow amount may be adjusted through the inflow control valve 13.

Two blowers 14a and 14b are installed on both sides of the cylindrical portion 10 of the primary cyclone 30 to supply air at a constant speed, thereby forming a vortex inside the cyclone, which contains foreign matter. By processing the dense soil particles, the large dust particles are gathered by the centrifugal force and settled to the bottom of the conical wall so as to be discharged from the vertices 21 of the cone portion 20, while being contained in the soil raw material at about 2 to 5%. The light foreign matter particles gathered at the center of the cyclone to form a rising swirling vortex and discharged to the secondary cyclone 40 of the next stage through the overflowfinder A 15 inserted at the top of the primary cyclone cylinder 10. Provided are a method and an apparatus for effectively separating foreign matter in soil by using a primary cyclone (30) having a structure.

The foreign matter and fine particles passed through the primary cyclone 30 are moved to the secondary cyclone 40 again, and after the reprocessing process in which separation by the difference in the particle size or specific gravity of the solid particles is performed again, the foreign matter is secondary cyclone ( 40 to be discharged from the vertex 41 side is sent to the foreign matter storage tank 80, the fine dust is the pressure of the next step through the overflowfinder B (42) inserted into the upper end of the cylindrical portion of the secondary cyclone (40) It is moved to the release tank 50.

At this time, the light foreign matter (stroform, etc.) that could not be removed together with the fine dust is released from the pressure release tank 50 to sink to the lower portion is sent to the conveying conveyor B (93) through the outlet 51 The foreign matter storage tank 80 is to be loaded.

In the front part of the conveying pipe 52 which is introduced into the dust collector from the pressure release tank 50, a filtering membrane 53, which is a filtering device, is installed to suppress the introduction of foreign substances into the dust collector and to prevent clogging of the filtering device. At the rear of the device, a light blow duct 54 is provided for occasional backwinding.

Therefore, the soil to be treated, including about 2 to 5% of foreign matter, is introduced into the foreign matter separating device of the present application, and about 2 to 5% of foreign matter is processed through the overflowfinder A (15) of the primary cyclone (30). Soil is discharged to the cyclone 40 and the foreign matter is removed through the vertices 21 of the cone portion 20 is discharged through the structure to be transferred to the soil holding tank 90 through the purified soil powder conveying conveyor 92 2 to 5% of foreign matter contained in the soil mixture has a structure that is sent to the foreign matter storage tank (80), so that the air introduced into the dust collector (60) is composed of only very small amounts of dust into the fine particles. can do.

FIG. 2 shows a plan view of the processing system diagram of FIG. 1 viewed from the top, and FIG. 3 shows a perspective view for showing the flow of fluid inside the cyclone. In FIG. 3, the primary cyclone 30 and the secondary cyclone are shown in FIG. 3. A simplified diagram that can also be discharged via a bag filter is shown.

As described above, the embodiments of the technical idea of the present application have been described, but the technical idea of the present application is capable of identifying foreign substances having a large volume in waste wood, vinyl, cloth, etc. in aggregate or soil separated by a conventional method. While recognizing the problem that finely pulverized small crushed waste styrofoam granules, waste wood, vinyl, cloth, etc., foreign matters remain in an amount of 2 to 5% in aggregate or soil in a state where manpower cannot be selected, In addition, the government was devised in consideration of the beginning of the regulation to include less than 1% by volume of foreign substances contained in recycled aggregates or soil.

The present application is based on the volume ratio of the foreign matter when the soil mixture is treated in a conventional cyclone separation facility (a facility without a blower installed on both sides of the cyclone among the facilities disclosed in FIG. 1 of the present application). The requirement to include less than 1% could not be met.However, when the 15 horsepower blower is installed on both sides of the cyclone cylindrical diameter of 2000 mm, the air flow is regulated and applied. After confirming that the present invention can be satisfactorily satisfied, the present invention has been completed. The remaining post-treatment facilities other than the purpose of installing blowers on both sides of the cyclone, which is the core technology idea of the present application, to increase the separation efficiency are disclosed and described in FIG. 1. Of course, if the contents are not described, they can be modified or applied.

In order to meet the quality certification system of recycled aggregates, the present invention has the effect of separating fine soils and foreign matters to produce the amount of foreign matters in the recycled aggregates or soil powder to less than 1% of the total volume ratio, thereby obtaining good aggregates and soils.

In addition, in terms of environmental preservation, the company saves Seoksan resources, which are national land resources, and reduces the amount of aggregate imported from foreign countries. It removes and removes foreign substances from the soil, and the quality soil is recycled for cover.

Claims (3)

In the separation method using the cyclone to remove the foreign matter in the recycled aggregate or soil by using the production equipment of the recycled aggregate, An inflow step of receiving the cyclone through the upper inlet chute; A dispersion step of dispersing the influent in the same amount using a distributor; A blower installed at both sides of the cyclone to control and blow the air volume on both sides; Vortex is formed inside the cyclone, and heavy particles are discharged downward along the inner wall of the cyclone, and light foreign matter is collected inside the cyclone and transported to the upper outlet by the upward airflow. Separation method of foreign matter in the circulation aggregate or soil, characterized in that provided, including. The method of claim 1, The cyclone is provided as a primary, secondary double cyclone device to increase the separation effect, characterized in that the separation of foreign matter in recycled aggregates or soil. In the separation device using the cyclone to remove the foreign matter in the recycled aggregate or soil by using the production equipment of the recycled aggregate, An inlet chute is installed at the upper part of the cyclone to introduce a treatment object and to be transported to the lower part; Distributor is installed in the lower portion of the inlet chute to distribute the influent in the same amount, Blower means provided with blowers on both sides of the cyclone, The bottom of the cyclone forms a cone and naturally forms a vortex inside, and heavy particles are discharged downward along the inner wall of the cyclone, and light foreign matter is collected inside the cyclone and transported to the upper outlet by an upward airflow. Separation device for foreign matter in the circulation aggregate or soil, characterized in that provided including a blowing amount adjusting means for adjusting the amount of air blowing inside the cyclone.

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