KR102672667B1 - Vibrating screen for selecting aggregate of construction wastes - Google Patents

Abstract

In the present invention, the upper deck is installed inside the hollow case slanted downward toward the first outlet, and moves the recycled aggregate injected through the inlet as if sliding downward while colliding and dispersing it. Wind is blown diagonally to the upper side of the upper deck. An upper header with a plurality of first nozzles arranged to blow away and separate dirt and foreign substances from the recycled aggregate sliding along the upper deck, is installed inside the case slanted downward toward the first outlet at a height difference from the upper deck, and the upper A low deck that slides downward while colliding and dispersing recycled aggregates falling from the deck. Wind is blown diagonally to the upper side of the low deck, blowing away dirt and foreign substances sliding along the low deck and falling toward the third outlet. A low header with a plurality of second nozzles arranged on the top of the upper deck, a brush conveyor that scrapes up foreign substances rising to the top of the upper deck with a rotating brush and discharges them to the second discharge port, and the slope of the upper deck and low deck. Disclosed is a vibrating screen for sorting out foreign substances in construction waste, including a vibrator that extends the residence time of recycled aggregate by applying exciting force by a vibrating motor in the opposite direction.

Description

{VIBRATING SCREEN FOR SELECTING AGGREGATE OF CONSTRUCTION WASTES}

The present invention relates to a vibrating screen, which is a device for separating foreign substances mixed in recycled aggregates such as waste concrete and waste soil produced in the process of intermediate processing of construction waste. More specifically, it relates to a vibrating screen using falling, wind, and vibration energy. This relates to a vibrating screen for screening foreign substances in construction waste that mechanically separates and removes small-volume and light-weight foreign substances that cannot be used as aggregates among recycled aggregates, as well as clay materials and soil that are not suitable for aggregates.

Today, the production process of recycled aggregate is largely classified into a crushing process and a foreign material separation process, and in particular, the foreign material separation process is mostly simple recycling through screening.

The general construction waste disposal process in Korea involves collecting and transporting large amounts of waste concrete and waste soil generated at building demolition and dismantling sites, storing them in a yard, and then mobilizing equipment and manpower to roughly sort them out. Concrete and waste soil are crushed to an appropriate size using a jaw crusher, etc., and then go through the process of selecting foreign substances, peeling off cement mortar and paste, and washing to produce recycled aggregate.

In other words, due to the nature of construction waste, recycled aggregates contain various foreign substances such as waste wood, waste synthetic resins such as Styrofoam, metals such as rebar, waste paper, and waste fibers used as cement reinforcers. Therefore, for effective recycling, foreign substances are mixed in. must be separated, selected, and removed.

Currently, the technologies used in Korea to separate foreign substances from recycled aggregates include removal by washing, separation by wet flotation, methods using vibrating screens, methods using wind power, and methods using magnetic force.

Among these, the method of separating and removing foreign substances using water has the disadvantage of generating a large amount of wastewater, causing secondary environmental pollution, and requiring dehydration and drying processes, which takes longer and increases operating costs.

Meanwhile, the main principle of selecting foreign substances by driving a vibrating screen is to induce effective vibration generation by using the eccentricity of the vibrating body and to induce relative motion due to friction between the inclined plate and the particles and each other.

In general, the method of separating recycled aggregates by dispersing the recycled aggregate and letting it fall in the air and blowing away some light foreign substances with a blower is of good quality because it simply uses the fact that the falling speed varies depending on the specific gravity, particle size, and shape of the solid particles to separate and remove the foreign substances with the wind. Not only is it difficult to obtain recycled aggregate, but there is a problem in that dust and foreign substances are scattered to the surrounding area due to the spread of wind.

Patent Document 1 discloses a construction waste treatment device that separates foreign substances using a vibrating screen and blower. It consists of a vibrating screen that spreads the construction waste supplied through the transfer conveyor belt and moves it forward, and a high-pressure air sprayer that sprays high-pressure air from the top of the vibrating screen to separate foreign substances in the construction waste.

However, due to the structural characteristics of such conventional treatment devices, which separate foreign substances by simply spraying high-pressure air toward construction waste moving on a vibrating screen, some recyclable aggregate resources are lost along with foreign substances that are relatively small in volume and light in weight. Because they are collected quickly, there is a problem that the selection efficiency is reduced and the efficiency is deteriorated.

In addition, various selection factors cannot be varied depending on the nature of construction waste and the type of foreign substances, so the operating efficiency is significantly low.

The background or prior art described above is information possessed by the present inventor or acquired in the process of deriving the present invention, and is only intended to help understand the technical significance of the present invention, and is information to which this invention belongs before filing the application for the present invention. It should be noted that this does not mean that it is a widely known technology in the field.

KR 10-1427849 B1(2014.08.01) KR 10-2009-0112071 A(2009.10.28) KR 10-1479188 B1(2014.12.29) KR 10-1816278 B1(2018.01.02) KR 10-2073421 B1(2020.01.29) KR 20-0302027 Y1(2003.01.10)

Accordingly, the present inventor comprehensively considered all of the above-mentioned matters and, at the same time, with the idea of solving the technical limitations and problems of the existing vibrating screen technology, waste synthetic resins, waste paper, waste fibers, etc. mixed with or caught in the recycled aggregate. Various relatively small-volume and light-weight foreign substances and clay materials and soil that are not suitable for aggregate are efficiently separated using specific gravity difference, falling, wind power, and vibration energy, and are also sorted according to the properties of construction waste and the type of foreign material. The present invention was created as a result of continuous research with great effort to develop a vibrating screen for sorting foreign substances in construction waste with a new structure that can increase the removal speed of foreign substances and the sorting efficiency of recycled aggregate by varying the factors. .

Therefore, the technical problem and purpose to be solved by the present invention is to provide a vibrating screen for sorting foreign substances in construction waste that allows selection by varying the selection factor depending on the nature of the construction waste and the type of foreign substances.

Here, the technical problems and objectives to be solved by the present invention are not limited to the technical problems and objectives mentioned above, and other technical problems and objectives not mentioned will be clearly understood by those skilled in the art from the description below.

Specific means according to the aspect of the present invention for effectively achieving a specific technical purpose while embodying a new idea for solving the technical problem of the present invention as described above include a base frame, installed on the base frame, and , an inlet for inputting the recycled aggregate, a first outlet for discharging the recycled aggregate, a second outlet for discharging foreign substances mixed in the recycled aggregate, and a third outlet for discharging soil and foreign substances mixed in the recycled aggregate. A hollow case, an upper deck installed inside the case inclined downward toward the first discharge port, sliding the recycled aggregate input through the inlet downward while colliding and dispersing it, and blowing wind to the upper side of the upper deck. At least one upper header with a plurality of first nozzles arranged to blow and separate soil and foreign substances from the recycled aggregate sliding along the upper deck by blowing at an angle, with a height difference from the upper deck inside the case, A low deck is installed slanted downward toward the first outlet, and moves the recycled aggregate falling from the upper deck as if sliding downward while colliding and dispersing it. Wind is blown obliquely to the upper side of the low deck to slide along the low deck. At least one low header with a plurality of second nozzles arranged to blow away falling dirt and foreign substances and drop them toward the third outlet, a brush installed on the upper part of the upper deck and rotating foreign substances rising to the upper deck A brush conveyor is installed on the case and a brush conveyor that scrapes up and discharges it to the second outlet, and extends the residence time of the recycled aggregate by applying an exciting force by a vibration motor in the opposite direction to the inclination direction of the upper deck and the lower deck. We present a vibrating screen for screening foreign substances in construction waste, which is characterized by employing a device including a device.

As a result, the present invention can evenly scatter the recycled aggregate and slowly slide it down, and quickly separate the soil and foreign substances mixed in it by transporting them with the wind.

In addition, the selection factor can be varied depending on the nature of the construction waste and the type of foreign matter, so not only can the speed and selection efficiency of separating and removing soil adhering to the recycled aggregate or various foreign substances caught between the recycled aggregates be increased. It can be used for various construction wastes.

In addition, a preferred aspect of the present invention is a joint pin connecting the lower lower surface portion of the upper deck to the case with a pin joint, which is installed on the upper lower surface portion of the upper deck, and drives the electric motor. As the cam rotates, it further includes a tilting device that adjusts the tilt of the upper deck by moving it up and down within a certain angle range around the joint pin, so that the upper deck is shaken and shakes up and down, so it is exposed to recycled aggregate. Various foreign substances caught between stuck soil or recycled aggregates can be more effectively separated and removed.

In addition, in a preferred aspect of the present invention, the upper deck has a plurality of longitudinal grooves formed on the upper surface, a coating layer that increases friction against foreign substances is formed, and the first nozzle of the upper header is formed with the vertical grooves. A number of springs are installed inside at regular intervals and increase the kinetic energy of the recycled aggregate falling through the inlet through elastic action, thereby minimizing the installation angle of the upper deck and the slope in the direction in which the recycled aggregate slides. Foreign substances can easily travel in the opposite direction, increasing separation efficiency.

In addition, in a preferred aspect of the present invention, the row deck has a plurality of bar seats arranged at regular intervals on the upper surface, and a round bar is wrapped and coupled to the bar seats so that they can freely move left and right at a certain angle, A chute bar that slides the recycled aggregate downward is formed on the top of the round bar, and the second nozzle of the row header is disposed between the bar sheets to remove foreign substances such as thin wood chips or lumps of dirt. It is levitated by air pressure, and at the same time, the gap between the chute bars is displaced left and right due to vibration, which prevents foreign substances from getting caught or blocked, and can be removed by quickly dropping them into the third outlet of the case. .

According to the technical idea and embodiment of the present invention, which is based on a unique solution to solve the above-described technical problem, recycled aggregate is dropped onto the upper deck to hit it and then slid down to create friction and vibration. The power is used to shake off foreign substances and dirt that are relatively small in volume and light in weight and are caught in or around the space, and disperse them widely and evenly. At the same time, the wind blowing from the first nozzle of the upper header and generated from the vibrator acts as a force. Foreign substances can be initially separated by levitating them upward using the exciting force.

In addition, in the process of causing the recycled aggregate sliding from the upper deck to fall onto the low deck, hit it, and then slide down, the wind blowing from the second nozzle of the low header and the exciting force generated by the vibrator cause foreign matter to be removed. and soil can be separated secondarily.

In other words, the retention time of the recycled aggregate increases due to the influence of wind and exciting force acting in the opposite direction to the slope direction of the upper deck and lower deck, which not only improves operation efficiency for separating and removing soil and foreign substances, but also enables physical sorting. By increasing processing efficiency, high-quality recycled aggregate can be obtained.

In addition, the physical selection factors such as exciting force and friction force can be changed depending on the nature of the construction waste and the type of foreign matter, so it can be used in a variety of ways, as well as separating the dirt stuck to the recycled aggregate and the foreign matter caught in between. The speed of removal processing (progress) and selection efficiency can be maximized.

Here, 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.

Figure 1 is a front view schematically showing a vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention.
Figure 2 is a local side view for explaining the operating state of the upper deck among the components constituting the vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention.
Figure 3 is a longitudinal cross-sectional view for explaining the operating state of the upper deck among the components constituting the vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention.
Figure 4 is a plan view showing the upper deck among the components constituting the vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention.
Figure 5 is an enlarged cross-sectional view showing the section from A to A' in Figure 4.
Figure 6 is an enlarged cross-sectional view showing the section from B to B' in Figure 4.
Figure 7 is a plan view showing a low deck among the components constituting a vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention.
Figure 8 is an enlarged cross-sectional view showing the section from C to C' in Figure 7.
Figure 9 is an enlarged cross-sectional view showing the section from D to D' in Figure 7.
Figure 10 is a local cross-sectional view for explaining the operating state of the low deck among the components constituting the vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in more detail with reference to the attached drawings.

Prior to this, the terms described below are defined in consideration of their functions in the present invention, and should be interpreted as concepts consistent with the technical idea of the present invention and meanings commonly used or commonly recognized in the relevant technical field.

Additionally, if it is determined that a detailed description of a known function or configuration related to the present invention may obscure the gist of the present invention, the detailed description will be omitted.

The drawings attached herein may be shown with some parts exaggerated or simplified for explanation of the composition and operation of the technology and for convenience and clarity of understanding, and each component in the drawings does not exactly match the actual size and shape. reveal that it is not

In addition, in this specification, the term and/or refers to a combination of a plurality of related described items or includes any item among a plurality of related described items, and when a part is said to include a certain element, this is a specially opposed description. This does not mean excluding other components unless there is a , but means that other components can be included in addition.

In other words, terms such as 'include', 'equipped', 'have', etc. used in this specification mean the presence of features, numbers, steps, operations, components, parts, or a combination thereof. However, it should be understood that this does not exclude the presence or addition of one or more other features, numbers, step operation components, parts, or combinations thereof.

In addition, the meaning of the terms “part” and “unit” refers to a unit or module that processes at least one function or certain operation desired in the system, which is hardware, software, or a combination of hardware and software. It can be implemented by means such as a device or assembly that can perform an independent operation.

In addition, terms such as top, bottom, upper surface, lower surface, or upper, lower, upper, lower, front and back, left and right are used for convenience to distinguish the relative positions of each component. For example, the upper part of the drawing may be referred to as upper and the lower part as lower, the longitudinal direction may be referred to as the front-to-back direction, and the width direction may be referred to as the left-right direction.

Additionally, terms such as first and second may be used to describe various components. That is, terms such as first, second, etc. may be used only for the purpose of distinguishing one component from another component. For example, the first component may be named the second component as long as it does not deviate from the scope of protection of the present invention, and the second component may also be named the first component.

As shown in Figures 1 to 9, the vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention is a conveyor that receives the driving force necessary for transporting recycled aggregate from an electric motor and circulates the endless belt in endless orbital motion. It is a device that separates and removes small-sized and light-weight foreign substances that cannot be used as aggregates among the recycled aggregates transported, as well as clay materials and soil that are not suitable for aggregates. The main components that make up this device are largely base. It includes a frame 10, a case 20, an upper deck 30, an upper header 40, a low deck 50, a low header 60, a brush conveyor 70, and an exciter 80.

The base frame 10 supports the upper deck 30 and the lower deck 50 to shake smoothly due to periodic external force applied from the vibrator 80.

That is, the base frame 10 is made of a steel pipe with a ring-shaped cross-section in the direction perpendicular to the longitudinal direction to maintain a stable bearing capacity against wind or impact, or a bar-shaped section steel with various cross-sectional shapes, a bar, or a steel frame ( It is assembled with steel rod, etc., and is firmly installed on the floor to support the case 20 at a certain height from the floor (ground).

The case 20 is made in the shape of a hollow cylinder with an empty interior and is installed at an angle on the base frame 10.

In addition, an inlet 21 is formed at one upper part of the case 20 for injecting recycled aggregate into the internal space, and a first outlet 22 is formed at the other lower part for discharging the recycled aggregate. On the opposite side of the first outlet (22), a second outlet (23) is formed to discharge foreign substances mixed in the recycled aggregate, and a third outlet (24) is formed at the bottom to discharge soil and foreign substances mixed in the recycled aggregate. It is formed.

Here, the inlet 21 may have a hopper shape whose cross-sectional area decreases toward the inside of the case 20.

In addition, the case 20 has relatively small particles and specific gravity, so it is desirable to adopt and apply a sealed structure that prevents dust that flies while mixed in the airflow from leaking to the outside.

The upper deck 30 has a first outlet 22 at the top of the case 20 to slide downward while colliding and dispersing the recycled aggregate input into the internal space of the case 20 through the inlet 21. It is installed sloping downward.

That is, the upper deck 30 is installed to separate soil and foreign substances while dispersing recycled aggregate of 25 mm or more that falls from the inlet 21 at a certain height by gravity and impact energy.

And the upper deck 30 is connected to the case 20 and the upper deck 30 by a pin joint using a joint pin 31, as shown in FIGS. 1 to 3.

That is, holes such as eye bars for mutual pin connection are formed on the inside of the case 20 and the lower surface of the upper deck 30.

In addition, a tilting device 34 is provided on the upper lower surface of the upper deck 30 to adjust the tilt of the upper deck 30 by moving it up and down within a certain angle range.

That is, the tilting device 34 rotates several cams 33 simultaneously by driving the electric motor 32, and the inclination of the upper deck 30 is displaced within a certain angle up and down with the joint pin 31 as the center. The coefficient of kinetic friction with the recycled aggregate can be adjusted by causing .

In addition, a number of vertical grooves 35 are formed on the upper surface of the upper deck 30 in the longitudinal direction, and a coating layer 36 made by coating with urethane or rubber to increase friction against foreign substances is formed on the upper surface of the upper deck 30. This is formed.

In addition, a plurality of springs 37 are installed on the lower surface of the upper deck 30 to increase the kinetic energy of the recycled aggregate introduced through the inlet 21 through elastic action.

In addition, on the upper surface of the upper deck (30), the cam (33) minimizes breakage and damage to parts due to shock and friction that occurs when the cam (33) moves up and down the upper deck (30), lowering the incidence of failure and extending the durability. A buffer pad 38 is attached to achieve the effect of extending.

Meanwhile, the electric motor 32 of the upper deck 30 may have its operating axis directly connected to the rotation of the cam 33 or connected to the rotating axis through a separate electric device in order to transmit rotational force according to the opening and closing signal of the controller.

Here, the electric motor 32 converts electrical energy into mechanical energy to obtain rotational power. It is easy to start (drive) and operate by signal current from a controller, etc., it is easy to select a model suitable for the load, and noise and vibration are small. , a normal electric motor without exhaust pollution can be adopted.

For example, a servo motor that quickly stops and reverses operations by changing the voltage input according to the control signal to a rotation angle, or a step motor that rotates by a certain angle can be used. In addition, the rotation speed of the motor is reduced to provide the necessary driving force. A geared motor including a reducer that adjusts the output to force may be employed.

In addition, a hydraulic motor that generates power by applying high pressure generated by a hydraulic pump driven by a motor or engine to the operating shaft can be adopted to ensure reliable operation, enable automatic remote operation, and facilitate speed adjustment, stopping, and reversing. You can.

The upper header 40 is equipped to blow wind diagonally to the upper side of the upper deck 30 in order to blow away and separate soil and foreign substances from the recycled aggregate sliding down the upper deck 30.

That is, at least one upper header 40 is disposed at regular intervals inside the upper deck 30 to blow away and separate soil and foreign substances from the recycled aggregate on the upper deck 30 with strong wind speed. There are a plurality of first nozzles 41 arranged in each of them to blow wind obliquely to the upper side of the upper deck 40.

And the first nozzle 41 is arranged at regular intervals inside the vertical groove 35 of the upper deck 30.

Here, the upper header 40 receives compressed air or wind with a strong wind speed from a typical air compressor or blower that compresses air and increases pressure and speed, and simultaneously sprays it through the first nozzles 41. can do.

In addition, the upper header 40 can supply air supplied from an air compressor, blower, etc. to the plurality of first nozzles 41 at even airflow volume and wind speed.

That is, the recycled aggregate injected through the inlet 21 collides with the upper deck 30 by the falling energy and is dispersed, and in this process, the soil and foreign substances are separated, and the recycled aggregate with a relatively large specific gravity falls downward. Fine powder or soil with a small specific gravity, foreign substances, etc. are naturally blown toward the upper part of the upper deck 30 by the strong wind sprayed through the first nozzle 41.

The low deck (50) has a first outlet (22) with a height difference below the upper deck (30) in the case (20) in order to slide downward while colliding and dispersing the recycled aggregate falling from the upper deck (30). ) is installed sloping downward.

That is, the low deck 50 receives recycled aggregate of 25 mm or more that falls from the upper deck 30 and disperses it secondarily by gravity and impact energy to separate soil and foreign substances and cause them to slide down under their own weight, creating the first outlet 22. It is installed to deliver to an external conveyor, etc.

And, as shown in FIGS. 7 to 9, the low deck 50 has a plurality of bar seats 51 arranged at regular intervals on its upper surface, and the bar seats 51 can freely move left and right at a certain angle. In this way, the round bars 52 are each wrapped and coupled, and a chute bar 53 that slides the recycled aggregate downward is formed at the top of the round bars 52.

That is, when vibration occurs, the round bar 52, which is formed integrally with the lower part of the chute bar 53, freely rotates within a certain angle range within the bar seat 51 around its axis, thereby creating a gap between the chute bars 53. It can bring about change.

Here, the upper end of the low deck 50 is preferably disposed so as to overlap below the lower end of the upper deck 30.

The low header 60 is equipped to blow wind diagonally to the upper side of the low deck 50 in order to blow away dirt and foreign substances sliding along the low deck 50 and drop them toward the third discharge port 24.

That is, at least one row header 60 is disposed at regular intervals inside the row deck 50 to blow away dirt and foreign matter on the row deck 50 with strong wind speed, and each of them has A plurality of second nozzles 61 are arranged to blow wind obliquely to the upper side of the low deck 50.

And the second nozzles 61 are arranged at regular intervals between the bar seats 51 of the low deck 50.

Here, the row header 60 receives compressed air or strong wind from a typical air compressor or blower that compresses air and increases pressure and speed, and simultaneously sprays it through the second nozzles 61. can do.

In addition, the row header 60 can supply air supplied from an air compressor, blower, etc. to the plurality of second nozzles 61 at even airflow volume and wind speed.

Meanwhile, the blower can be an industrial high-pressure blower that sucks and pumps outside air at a constant flow rate, flow rate, and pressure using the centrifugal force of the gas generated by the high-speed rotation of the impeller or rotor.

For example, as the pressure inside the casing rises due to the centrifugal force caused by the rotation of the impeller, a vortex movement occurs, which makes it possible to obtain a ring blower or high pressure that flows outside air with strong suction force and discharge pressure, increasing efficiency. This high explosion-proof blower can be adopted and applied.

The brush conveyor (70) scrapes up various foreign substances (combustible waste, etc.) rising to the top of the upper deck (40) with a rotating brush (71) to prevent them from accumulating and discharges them to the second discharge port (23). ) is installed at the top of the.

Here, the brush conveyor 70 includes a drive roller that is directly connected to the drive shaft of the motor or connected by a power transmission device or electric device such as a chain and sprocket, or a belt and belt pulley, and a driven roller and drive installed at a certain distance from the drive roller. It may be composed of a slat that moves in a circular motion by winding the outer peripheral surface of the roller and the driven roller to connect them to each other, and a brush 71 fixed to the slat at regular intervals.

In other words, the brush conveyor 70 can be applied by adopting an electric slat conveyor structure that receives the driving force necessary for transporting foreign substances from a motor and moves in an endless orbit to circulate the slats and brushes 71 simultaneously.

The vibrator (80) gives the case (20) a vibration that shakes it back and forth and left and right to move, disperse and separate the recycled aggregate, soil and foreign substances on the upper deck (30) and the lower deck (50), and along with this, the upper deck (30) ) and is installed on the upper part of the case 20 to extend the residence time during which the recycled aggregate is struck by applying exciting force by the vibration motor 81 in the direction opposite to the inclination direction of the low deck 50.

Here, the vibrator 80 is an electric motor 81 such as an eccentric shaft-driven type or an unbalanced pendulum type that rotates the eccentric shaft eccentrically by driving the electric motor 81 to generate periodic centrifugal force and force the case 20 to vibrate. It is desirable to employ an exciter that generates an unbalanced torque with a driving force of , but of course, it is not limited to this and various exciters can be employed.

Meanwhile, the tilting device 34, brush conveyor 70, and vibrator 80 of the upper deck 30 may be controlled by a separate controller.

In other words, the controller organically and sequentially controls the operation of the tilting device 34, brush conveyor 70, and exciter 80 by a pre-input microprocessor or PLC-type setting program (control program included in the logic computer). You can control the overall operation, including operation.

Here, the controller may be provided in the form of an operation panel that allows the operator to directly operate switches, etc. or select and input specific commands.

In addition, a signal can be applied according to the operation and opening and closing of a push switch, etc., or it can be implemented as a control system that monitors and controls the operation of the electric motor to obtain a target result or value.

The main operation and operating principle of the vibrating screen for separating foreign substances from construction waste according to an embodiment of the present invention configured as described above are described as follows.

First, the recycled aggregate continuously injected into the case 20 through the inlet 21 is scattered along the upper deck 30 located at the top of the case 20 by falling and gravitational energy and slides downward. do.

In this process, the case 20 and the upper deck 30 are shaken by vibration caused by the vibrator 80 to evenly distribute the recycled aggregate, while the dirt adhering to the recycled aggregate and various foreign substances (combustible waste, etc. ) is primarily separated.

At this time, due to the exciting force of the vibrator 80 acting in the opposite direction to the inclination direction of the upper deck 30 and the lower deck 50, the residence time for the recycled aggregate to collide and scatter is naturally extended.

That is, the direction of the exciting force generated from the vibrator 80 acts in the opposite direction to the inclination direction of the upper deck 30 and the low deck 50, and the exciting force acts in the direction opposite to the inclination direction of the upper deck 30 and the low deck 50. By acting higher than the friction force, foreign substances with a relatively large area and low specific gravity rise in the direction in which the exciting force acts, and aggregates with a narrow area and high specific gravity move along the slopes of the upper deck 30 and the low deck 50 rather than the exciting force. The sliding force of gravity is high, so it goes down.

In addition, various foreign substances that are small in volume and light in weight do not fall downward due to the wind blowing from the first nozzle 41 of the upper header 40, but float on the rising air current and naturally move upward to the upper deck 30, Recycled aggregates with large particles and specific gravity are not significantly affected by air currents, so they fall onto the low deck 50 and move in a sliding manner due to gravitational energy.

At the same time, various foreign substances rising to the top of the upper deck 40 are scraped up with the brush 71 of the brush conveyor 70 and discharged through the second discharge port 23.

And the recycled aggregate that slides down due to gravity from the upper deck (30) falls on the lower deck (50) and hits it, knocking off foreign substances attached to or mixed with the surface, thereby causing secondary separation.

At this time, foreign substances such as thin pieces of wood or lumps of soil do not fall due to the wind blowing from the second nozzle 61 of the row header 60 and the exciting force of the exciter 80, but naturally fall in the direction in which the exciting force acts. It goes up to.

That is, the foreign matter on the low deck (50) naturally rises above the low deck (50) in the rising air current due to the wind blown from the second nozzle (61) and the exciting force of the vibrator (80), and then falls on the low deck (30). Because it falls down through the gap between the particles, the processing speed and sorting efficiency of separating and removing foreign substances in the recycled aggregate can be maximized.

At the same time, as shown in FIG. 10, the gap between the chute bars (53) is periodically expanded by causing displacement to the left and right due to vibration, so foreign substances caught between the chute bars (53) naturally fall and are removed. 3 It falls into the outlet (24).

In this case, the soil and foreign matter are completely separated, and only the recycled aggregate of 25 mm or more, which has relatively large particles and specific gravity and is not greatly affected by air currents, slides down along the low deck 50 by gravity energy and reaches the first outlet 22. It is discharged to the outside through .

In this way, the vibrating screen for sorting out foreign substances from construction waste according to an embodiment of the present invention has the upper deck 30 and the lower deck 50 blowing the wind sprayed from the first and second nozzles 41 and 61 and the vibrator 80. ), it is possible to evenly disperse the recycled aggregate through the action of exciting force and effectively separate the soil adhering to the surface and the foreign matter caught in between.

Moreover, depending on the nature of the construction waste and the type of foreign matter, the exciting force is adjusted by adjusting the rotational force of the vibration motor (81), the friction coefficient is adjusted by adjusting the inclination angle of the upper deck (30), and the first and second nozzles (41) (61) Since the physical selection factors, such as the pressure and flow rate adjustment of the wind sprayed through the system, can be arbitrarily varied, it can be used in a variety of ways, as well as maximizing the processing (progress) speed and sorting efficiency of separating dirt and foreign substances.

Meanwhile, the present invention is not limited to the above-described embodiments and the accompanying drawings, and may be modified and applied in various ways not exemplified without departing from the technical spirit of the present invention. It is clear to those skilled in the art that the present invention can be broadly applied by replacing components and changing it to other equivalent embodiments.

Therefore, contents related to modifying and applying the technical features of the present invention should be construed as being included within the technical idea and scope of the present invention.

10: Base frame 20: Case
21: Inlet 22: First outlet
23: second outlet 24: third outlet
30: Upper deck 31: Joint pin
32: electric motor 33: cam
34: crank device 35: vertical groove
36: coating layer 37: spring
40: Upper header 41: First nozzle
50: Low deck 51: Bar seat
52: Round bar 53: Chute bar
60: Low header 61: Second nozzle
70: Brush conveyor 71: Brush
80: Vibrator 81: Vibration motor

Claims (4)

base frame;
It is installed on the base frame, and has an inlet for inputting recycled aggregate, a first outlet for discharging the recycled aggregate, a second outlet for discharging foreign substances mixed in the recycled aggregate, and an outlet for discharging soil and foreign substances mixed in the recycled aggregate. A hollow case formed with a third outlet for;
An upper deck installed inside the case to be inclined downward toward the first outlet, and moving the recycled aggregate input through the inlet as if sliding downward while colliding and dispersing it;
At least one upper header arranged with a plurality of first nozzles that blows wind diagonally to the upper side of the upper deck to blow away and separate soil and foreign substances from the recycled aggregate sliding down the upper deck;
A low deck installed inside the case to be inclined downward toward the first outlet with a height difference from the upper deck, and moving the recycled aggregate falling from the upper deck as if sliding downward while colliding and dispersing it;
At least one row header with a plurality of second nozzles arranged to blow the wind obliquely to the upper side of the row deck to blow away dirt and foreign substances sliding along the row deck and drop them toward the third outlet;
A brush conveyor installed on the upper part of the upper deck, scraping up foreign substances rising to the upper part of the upper deck with a rotating brush and discharging them to the second discharge port; and
A vibrator installed in the case and extending the residence time of the recycled aggregate by applying an exciting force by a vibration motor in a direction opposite to the inclination direction of the upper deck and the lower deck;
Includes,
The low deck has a plurality of bar sheets arranged at regular intervals on the upper surface, round bars are each wrapped and coupled to the bar sheets so that they can freely move left and right at a certain angle, and recycled aggregate is placed downward on the top of the round bars. A vibrating screen for sorting out foreign substances from construction waste, wherein chute bars for sliding are formed integrally, and the second nozzle of the row header is disposed between the bar seats.
According to paragraph 1,
A joint pin connecting the lower lower surface of the upper deck with the case through a pin joint; and
A tilting device installed on the upper lower surface of the upper deck and rotating a cam by driving an electric motor to adjust the tilt of the upper deck by moving it up and down within a certain angle range with the joint pin as the center;
A vibrating screen for screening foreign substances in construction waste, further comprising:
According to paragraph 1,
The upper deck has a number of vertical grooves formed in the longitudinal direction on the upper surface, a coating layer that increases friction of foreign substances is formed, and a plurality of springs that increase the kinetic energy of the recycled aggregate introduced through the inlet through elastic action are formed on the lower surface. A vibrating screen for separating foreign substances from construction waste, wherein a plurality of first nozzles of the upper header are arranged at regular intervals inside the vertical groove.
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