KR102348868B1 - Wheel rake type light fraction separator - Google Patents

Abstract

An object of the present invention is to provide a variable rotary rake sorting device capable of flexibly adjusting the height and inclination of the rake according to the properties of the construction waste.
Accordingly, in the present invention, a support installed at regular intervals on the floor, a frame positioned on the support, a rake having a plurality of prongs (tooth) around the outer periphery of the rim, which is installed to rotate by driving an electric motor on the inside of the frame, the support Fixed on one side, the push rod is connected to one side of the frame to raise and lower the rake by extension and contraction action, and it is mounted on the opposite side of the support with a pin joint, and the push rod is connected to the opposite side of the frame to perform extension and contraction action The second actuator that raises and lowers the rake with Disclosed is a rotary rake-type sorting device for removing light fractions of construction waste including a controller for controlling the operation.

Description

Rotary rake sorting device for light fraction removal of construction wastes {WHEEL RAKE TYPE LIGHT FRACTION SEPARATOR}

The present invention relates to a rotary rake-type sorting device for removing light fractions of construction wastes that selectively selects and removes light fractions such as paper, packaging materials, films, and fabrics among construction wastes, and more particularly, light fractions from construction wastes. In order to increase the fraction sorting efficiency and processing speed, it is a variable rotary rake sorting device that can flexibly adjust the height of the rake according to the properties of the construction waste transported through the conveyor, and also adjust the inclination according to the installation angle of the conveyor. it's about

In general, a rotary rake sorting device removes light fractions such as paper, packaging materials, films, and cloth mixed with waste as a rake rotates in a right angle direction toward the recycled waste moving horizontally by a conveyor. And light fractions that affect the downstream process can be effectively selected in advance without blowing dust.

Such a rotary rake sorting device has been developed and developed in various technologies since the start of the full-scale recycling of waste or resources in order to reduce the cost of energy generation.

For example, Patent Document 1 discloses a waste separation device for increasing the efficiency of sorting combustibles among mixed wastes. As shown in FIG. 1, the first transfer unit 100 for transferring the inflammables C1, C2 and the incombustibles N, and the rake 210 rotate in one direction to disperse the inflammables and the incombustibles, and A combustible separator 200 for separating the combustibles (C1) of a predetermined particle size or more from among the combustibles, and a second conveying unit 300 and the first for conveying the combustibles (C1) having a predetermined particle size or more separated by the rake 210 It is provided at the end of the transfer unit 100, and is configured to include a blower 400 that blows air to separate the combustibles C2 of a predetermined particle size or less.

However, such a conventional rotary rake sorting device uses paper, When used for sorting and separating light fractions such as packaging materials, films, and cloth, the length of the rake 210 is easily worn due to the irregular properties of construction waste and the mechanical characteristics of the rotary rake type, and the length of the There is a problem in that the separation function is rapidly deteriorated and, in severe cases, damage occurs.

In addition, since frequent replacement of the rake 210 is required, there is a problem in that the maintenance cost is high and the operation rate and productivity are considerably lowered.

The background or prior art described herein is information possessed by the inventor or acquired in the process of deriving the present invention, and is only intended to help in understanding the technical meaning of the present invention, and prior to the filing of the present invention, the technology to which this invention belongs It is revealed that it does not mean a technique widely known in the field, and the reference numerals in the prior art are not mutually exclusive with the reference numerals in the present invention.

KR10-1253597 B1 (2013.04.05) KR10-1304471 B1 (2013.08.30) KR10-0900797 B1 (2009.05.27) KR10-0428378 B1 (2004.04.09)

Accordingly, the present inventor comprehensively considers all the above matters and at the same time, from the idea of solving the technical limitations and problems of the existing rotary rake sorting device technology, waste concrete, waste blocks, waste bricks, waste asphalt, waste wood, reinforcing bars The height of the rake is flexibly adjusted according to the characteristics of the construction wastes that are mixed with miscellaneous garbage or other contaminants at the construction site such as , soil, etc. As the result of continuous research to develop a rotary rake type sorting device for light fraction removal of construction waste with a new structure that can improve the sorting efficiency and processing speed of light fractions, invented the invention.

Therefore, the technical problem and object to be solved by the present invention is to provide a rotary rake-type sorting device for removing the light fraction of construction waste that allows the height of the rake to be flexibly adjusted according to the properties of the waste.

In addition, another technical problem and object to be solved by the present invention is to provide a rotary rake-type sorting device for removing the light fraction of construction waste that allows the inclination of the rake to be appropriately adjusted according to the installation angle of the conveyor for transporting the waste. there will be

In addition, another technical problem and object to be solved by the present invention is to provide a rotary rake-type sorting device for removing light fractions of construction waste that can effectively remove fine powder attached to the waste or various foreign substances lying underneath. there will be

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

Specific means according to an 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 is installed above the conveyor, A rotary rake-type sorting device for removing light fractions of construction waste that removes garbage or contaminants mixed with waste transported by the conveyor while rotating in a direction perpendicular to the transmission direction of a support installed at regular intervals on the floor, the above A frame positioned above the support, a rake having a plurality of teeth on the outer periphery of the rim, which is arranged to rotate by driving an electric motor on the inside of the frame, fixed to one side of the support, and a first push rod A first actuator connected to one side of the frame to elevate the rake by extension and contraction action, is mounted on the opposite side of the support with a pin joint, and a second push rod is connected to the opposite side of the frame by extension and contraction action A second actuator for elevating the rake, a third actuator fixed to the opposite side of the support, and supporting the opposite side of the frame when the third push rod is extended to keep the rake inclined at an angle, and the electric motor and the second actuator Presents a rotary rake-type sorting device for removing light fractions of construction waste, characterized in that it includes a controller for controlling the overall operation of the first to third actuators.

Accordingly, the present invention is a novel method that improves the screening efficiency and processing speed of light fractions by flexibly adjusting the height of the rake according to the properties of the waste, and appropriately adjusting and maintaining the inclination of the rake according to the installation angle of the conveyor that transports the waste. effect may occur.

In addition, in a preferred aspect of the present invention, a sensor flap lever connected to the third push rod end of the third actuator by a pin joint, and a surface facing the frame of the sensor flap lever An anti-vibration pad that is attached and elastically absorbs vibration energy and is provided on the frame facing the sensor flap lever, detects the position of the sensor flap lever and transmits an electrical signal to the controller to operate the third actuator By further comprising a detection switch to stop the rake can more stably support the inclined state.

In addition, as a preferred embodiment (aspect) of the present invention, a detector that is installed on both sides of the conveyor, detects the height of the waste that is transported by the conveyor and enters the rake, and transmits an electrical signal to the controller. Since the height of the rake is automatically adjusted according to the nature of the waste by including it, the screening efficiency and processing speed of the light fraction can be greatly improved.

In addition, in a preferred embodiment (aspect) of the present invention, by attaching a wear pad to the end of the rake, it is possible to reduce abrasion to extend the service life, and to increase the frictional force with garbage or contaminants mixed with waste to improve the removal efficiency.

Also, in a preferred aspect of the present invention, the rake comprises first and second rakes of different lengths arranged radially alternately around the outer periphery of the rim to provide a light fraction of the waste transported low on the conveyor. can be effectively removed.

In addition, the first and second prongs are spirally surrounded at regular intervals along the direction of the rotation axis of the rake or arranged in a zigzag alternating with each other to increase the number of contact with the light fraction widely distributed on the conveyor to make it more dense It can be easily removed.

On the other hand, a specific means according to another embodiment (aspect) of the present invention, the rotation shaft of the rake is made of a hollow tube, compressed air supplied from an external compressor air feeder (compressed air feeder) along the longitudinal direction of the rotation shaft A plurality of injection holes for spraying are radially formed, the rim of the rake is made of a cylindrical hollow tube, and a plurality of nozzles are arranged radially around the outer periphery between the rakes along the longitudinal direction of the rim, the At the end of the supply pipe connecting the rotary shaft and the compressor air feeder, a swivel joint is installed with a pipe joint so that the rotary shaft can rotate freely. It can be removed to increase the selection efficiency.

According to the technical idea and embodiment (embodiment) of the present invention, which is based on a unique solution to solve the above technical problems, the height of the rake is flexibly adjusted according to the properties of the waste transported through the conveyor, and also the conveyor By changing and adjusting the inclination of the rake according to the installation angle, it is possible to improve the sorting efficiency and processing speed of light fractions, as well as extend the service life and increase the operation rate.

In addition, the rake's rake is made up of two shapes of different lengths and arranged alternately, and the light fraction in the waste transported low on the conveyor can be effectively removed by being spirally surrounded at regular intervals or arranged in a zigzag alternating with each other. In addition, by increasing the number of contact with the light fraction widely distributed on the conveyor, it can be removed more densely and easily.

Moreover, as a number of radially arranged nozzles between the rake's rakes rotate, they push out foreign substances such as light fractions in the discharge direction as if combing from top to bottom with compressed air. Various foreign substances lying on the bottom of the conveyor can be removed more efficiently.

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

1 is a front view showing an example of a rotary rake-type sorting device according to the prior art.
2 is a front view schematically showing a rotary rake type sorting device for removing light fractions of construction waste according to Example 1 of the present invention.
3 is a partial side cross-sectional view schematically showing a rotary rake type sorting device for removing light fractions of construction waste according to Example 1 of the present invention.
4 is a partial side cross-sectional view schematically showing a state in which the rotary rake-type sorting device for removing light fractions of construction waste according to Example 1 of the present invention is inclined at an angle.
5 is a partial side view showing an enlarged structure of the rotary rake-type sorting device for removing light fractions of construction waste according to Example 1 of the present invention, which maintains an obliquely inclined state.
6 is a partial cross-sectional view showing a rake among the components of a rotary rake-type sorting device for removing light fractions of construction waste according to Example 1 of the present invention.
7 is a front view schematically showing a rotary rake type sorting device for removing light fractions of construction waste according to Example 2 of the present invention.
8 is a partial side cross-sectional view schematically showing a rotary rake type sorting device for removing light fractions of construction waste according to Example 2 of the present invention.

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

Prior to this, the terms described below are defined in consideration of the functions in the present invention, which indicate that they should be interpreted as concepts consistent with the technical spirit of the present invention and meanings commonly or commonly recognized in the art.

In addition, when 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 thereof will be omitted.

The accompanying drawings show that parts are exaggerated or simplified for explanation of the configuration and operation of the technology and for convenience and clarity of understanding, and it is revealed that each component does not exactly match the actual size and shape.

In addition, in this specification, the term and/or is meant to include a combination of a plurality of related described items or any of a plurality of related described items, and when a part includes a certain component, it is a description that is specifically opposite This does not mean that other components are excluded, but other components can be further included.

That is, it means that there is a feature, number, step, operation, component, part, or a combination thereof described in this specification, and one or more other features or number, step operation component, part, or a combination thereof It is to be understood that this does not exclude the possibility of the existence or addition of those.

In addition, the meaning of the terms "unit" and "unit" means a module type that performs at least one function or a unit or role for processing a certain operation of the system, which is a combination of hardware or software or hardware and software It may be implemented as a device or assembly capable of performing an independent operation or a means through such a method.

And terms such as upper, lower, upper, lower, upper, lower, upper, lower, front and rear, left and right are used for convenience to distinguish relative positions of each component. For example, the upper side in the drawing may be named or referred to as the upper side and the lower side as the lower side, the longitudinal direction may be named or referred to as the front-back direction, and the width direction may be named or referred to as the left/right direction.

Also, terms such as first, second, etc. may be used to describe various components. That is, terms such as 1st, 2nd, etc. may be used only for the purpose of distinguishing one component from another component. For example, a first component may be referred to as a second component without departing from the protection scope of the present invention, and the second component may also be referred to as a first component.

[Example 1]

As shown in FIGS. 2 to 5, the rotary rake type sorting device for removing light fractions of construction waste according to Example 1 of the present invention receives the driving force required for transporting the waste from an electric motor and makes the endless belt run on a caterpillar track. It is installed above the conveyor (C) that circulates in motion and rotates in a direction orthogonal to the transmission direction of the conveyor (C) to remove garbage or contaminants mixed with the waste transported by the conveyor (C). includes a support 10 , a frame 20 , a rake 30 , first to third actuators 40 , 50 , 60 , a controller (not shown) and a detector 70 .

The support 10 is erected at a constant height at regular intervals on all sides of the floor (ground) to support and support the frame 20 and the rake 30 in a state positioned above the conveyor (C).

That is, the support 10 is composed of at least four or more having a predetermined length, and the lower part sufficiently supports and supports structures such as the frame 20 and the rake 30 while maintaining a stable support force against wind or impact. It is firmly anchored to the floor.

Here, the support 10 may be formed of a steel pipe having a ring-shaped cross-sectional shape in a direction perpendicular to the longitudinal direction, a bar-shaped steel pipe having various cross-sectional shapes, or a steel rod.

In addition, after arranging to form a square arrangement in all four corners of the frame 20, the lower part is driven into the ground to harden by pouring concrete, or it may be fixedly installed with an anchor bolt or the like to a concrete structure buried in the ground.

The frame 20 supports the rake 30 to rotate and elevate smoothly, and is located above the support 10 .

That is, the frame 20 forms a stable skeleton shape assembled by combining horizontally long rectangular parallelepipeds, such as a section steel, a bar, etc. in order to mount the rake 30 therein.

The rake 30 is installed inside the frame 20 to remove garbage or contaminants mixed with the waste transferred through the conveyor C while rotating at a constant speed by the driving of the electric motor 32 .

That is, the rotation shaft 31 of the rake 30 is installed across the frame 20 by means of a unit bearing to reduce friction, and at regular intervals by the spokes 34 on the outer periphery of the rotation shaft 31 A cylindrical rim 33 is coupled, and a plurality of prongs 35 are radially arranged around the outer periphery of the rim 33 .

In addition, the electric motor 32 is installed on one side of the frame 20 while being connected to the rotating shaft 31 by a transmission device in order to rotate the rotating shaft 31 at a constant number of rotations.

And, to the end of the rake 35, as shown in FIG. 6, a wear pad 36 is attached to reduce abrasion and increase frictional force with garbage or contaminants mixed with waste.

Here, the wear pad 36 is preferably formed of an elastic material such as rubber or urethane to increase elasticity and friction to prevent damage to the rake 35 .

In addition, the rake 35 binds one end of several Hard Drawn Steel Wires in a bundle form, and then inserts it into the first holder 37 to fix it in a set bolt method, and the second fixed to the rim 33 . The holder 38 and the plate spring 39 acting as an elastic action are interposed therebetween and tightened by penetrating a bolt or pin, so that it can be fixed more firmly around the outer periphery of the rim 33 without loosening due to vibration. wear and tear can be minimized.

Here, the prongs 35 may include first prongs 35a and second prongs 35b having different lengths, which may be alternately arranged radially around the outer periphery of the rim 33 .

That is, since the second rake 35b, which is relatively longer than the first rake 35a, is alternately arranged in a two-stage method, it is possible to effectively remove the light fraction in the waste transported low on the conveyor C. .

In addition, the first and second prongs 35a and 35b may be spirally surrounded at regular intervals along the direction of the rotation shaft 31 or disposed in a zigzag manner to alternate with each other.

That is, the first and second prongs 35a and 35b sequentially rotate while increasing the number of times of contact with the light fraction widely distributed on the conveyor C, so that it can be removed more densely and easily.

On the other hand, in the electric motor 32, the operating shaft is directly connected to the rotation shaft 31 in order to transmit the rotational force to the rotation shaft 31 of the rake 30 according to the opening/closing signal of the controller, or the rotation shaft 31 through a separate electric device. may be connected with

Here, the motor 32 converts electrical energy into mechanical energy to obtain rotational power, and 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 employed.

For example, a servo motor that quickly stops and reverses by changing a voltage input according to a control signal to a rotation angle or a step motor that rotates by a certain angle may be employed. It is also possible to employ a geared motor including a reducer that adjusts to output by force.

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 is adopted to ensure reliable operation, automatic remote operation, and easy speed adjustment, stopping and reversing. can

The first actuator 40 has at least one or more or a pair of fixed at regular intervals on one side of the support 10 in order to elevate the rake 30 by the extension and contraction action of the first push rod 41, and the The upper end of the first push rod 41 is connected to one side of the frame 20 supporting the rake 30 by a pin joint.

That is, the cylinder portion of the second actuator 50 is fixed to the support 10 , and the upper end of the first push rod 41 is connected to the frame 20 by a knuckle joint method.

Here, as the first actuator 40, when the controller transmits a control signal to a driving source such as a compressor to operate a cylinder (push loader, piston, or plunger) with hydraulic pressure or pneumatic pressure, conventional hydraulic or pneumatic structure of a structure that moves forward or backward or expands and contracts A device and actuator mechanism that converts energy and control signals into mechanical work such as a cylinder, a linear reciprocating cylinder using two cylinders as a set, and a linear motor that performs a linear linear motion can be adopted and applied.

For example, it is preferable to employ a hydraulic cylinder in which hydraulic pressure acts on both sides of the piston and the output acts in both extension and contraction.

In addition, it can be applied by adopting a hydraulic or pneumatic solenoid valve that converts the direction of motion with the force applied from the hydraulic (pneumatic) pump.

In addition, when the electric motor is operated according to the opening and closing of the switch of the controller, it can be configured with a structure of a linear actuator that converts rotational motion into linear motion and expands and contracts.

For example, a structure that converts the rotational motion of the servo motor into a linear motion by engaging a servo motor with a gear drive method such as a rack and pinion, such as a lead screw, or rotating a ball screw with a stepping motor using an encoder to control the position structure can be adopted and applied.

The second actuator 50 is provided in pairs at least one or more or at regular intervals on the other side of the support 10 in order to elevate the rake 30 by the extension and contraction action of the second push rod 51 .

And the lower end of the second actuator 50 is connected to the support 10 by a pin joint, and the upper end of the second push rod 51 is connected to the opposite side of the frame 20 supporting the rake 30. .

That is, the lower end of the second actuator 50 is connected to the support 10 and a knuckle joint (knuckle joint), and the upper end of the second push rod 51 is the frame 20 and the knuckle joint (knuckle joint). connected in a way.

Here, as the second actuator 50, when the controller transmits a control signal to a driving source such as a compressor to operate a cylinder (push loader, piston, or plunger) with hydraulic pressure or pneumatic pressure, conventional hydraulic or pneumatic structure that moves forward or backward or expands and contracts A device and actuator mechanism that converts energy and control signals into mechanical work such as a cylinder, a linear reciprocating cylinder using two cylinders as a set, and a linear motor that performs a linear linear motion can be adopted and applied.

For example, it is preferable to employ a hydraulic cylinder in which hydraulic pressure acts on both sides of the piston and the output acts in both extension and contraction.

In addition, it can be applied by adopting a hydraulic or pneumatic solenoid valve that converts the direction of motion with the force applied from the hydraulic (pneumatic) pump.

In addition, when the electric motor is operated according to the opening and closing of the switch of the controller, it can be configured with a structure of a linear actuator that converts rotational motion into linear motion and expands and contracts.

For example, a structure that converts the rotational motion of the servo motor into a linear motion by engaging a servo motor with a gear drive method such as a rack and pinion, such as a lead screw, or rotating a ball screw with a stepping motor using an encoder to control the position structure can be adopted and applied.

The third actuator 60 supports the lower surface of the frame 20 opposite to the lower surface of the frame 20 when the third push rod 61 is extended to maintain the rake 30 in an obliquely inclined state, and is fixed to the opposite side of the support 10 have.

And the sensor flap lever 62 is connected to the end of the third push rod 61 of the third actuator by a pin joint, and the surface facing the frame 20 of the sensor flap lever 62 is elastic. A vibration-proof pad 63 that absorbs vibration energy and increases adhesion with the frame 20 is attached.

In addition, a detection switch 64 that detects a position where the anti-vibration pad 63 is in close contact with the frame 20 and transmits an electrical signal to the controller is provided on the frame 20 facing the sensor flap lever 62 . has been

That is, when the detection switch 64 detects the proper position of the anti-vibration pad 63 and transmits an electrical signal to the controller, the controller stops the lifting operation of the third actuator 60 so that the rake 30 is inclined at an angle. Able to support and support the state stably.

Here, as the detection switch 64, when a metal object approaches the detection coil, the oscillation frequency or oscillation amplitude of the oscillation circuit connected to the detection coil changes due to electromagnetic induction. A capacitive type using a phenomenon in which the capacitance of the sensor changes significantly when the object to be detected approaches, or an optical fiber proximity sensor that detects the proximity of an object without contact and detects the position by facing the light-emitting element and the light-receiving element to detect transmitted light A photo sensor or the like can be employed.

In particular, it is preferable to employ a limit switch as a reference point for informing whether the anti-vibration pad 63 is in close contact in order to accurately support a state in which the rake 30 is inclined at a specific angle.

That is, the limit switch (contact sensor that detects mechanical movement and position by opening and closing the switch by moving the movable contact inside the contact part by contacting the sensor dog) detects the sensor flap lever 62 or the anti-vibration pad 63, A structure in which the controller outputs a control signal to control the driving source of the third actuator 60 may be applied according to the detection signal of the limit switch.

On the other hand, as the third actuator 60, when the controller transmits a control signal to a drive source such as a compressor to operate a cylinder (push loader, piston or plunger) with hydraulic pressure or pneumatic pressure, conventional hydraulic pressure or A pneumatic cylinder, a linear reciprocating cylinder using two cylinders as a set, and a linear motor that performs a linear linear motion, such as a device and actuator mechanism that converts energy and control signals into mechanical work, can be adopted and applied.

For example, as the third actuator 60 , it is preferable to adopt an electric screw jack method that elevates according to the rotation direction of the female screw rotated by the electric motor.

In addition, as the third actuator 60 , a pneumatic rodless cylinder having a structure in which a slide moves along a guide rail using the magnetic force and pneumatic force of a permanent magnet may be employed.

The controller controls the overall operation, such as organically and sequentially operating the operation of the motor 32 of the rake 30, the first to third actuators 40, 50, 60, etc. by a preset program. can

That is, the controller receives a switch opening/closing signal such as a detection switch 64 for power and operation control, respectively, and a detection signal from various sensors such as the detector 70, and based on this, a preset microprocessor or PLC Depending on the type of program (control program recorded in the logic computer), the rotation speed of the electric motor 32, the first to third actuators 40, 50, 60, length expansion and contraction and adjustment of each push rod, movement distance, range It controls overall operation and output, such as digital display with sequential operation such as

Here, the controller may be provided in the form of an operation panel capable of directly operating a switch or the like or selecting and inputting a specific command.

In addition, a signal may be applied according to operation and opening/closing of a push switch, or a target result or value by monitoring and controlling the operation of the electric motor 32 and the first to third actuators 40, 50, and 60 It may consist of a control system that obtains

The detector 70 is installed on both sides of the front of the conveyor (C) in order to detect the height of the waste transported to the lower side of the rake (30) by the conveyor (C) and transmit an electrical signal to the controller.

That is, the detector 70 detects the presence or absence of an abnormal object such as a reinforcing bar that enters toward the rake 30 in a state protruding above a certain height and sends an electrical signal to the controller, whereby the controller operates the first and second actuators ( 40) by controlling the operation of (50) can be automatically adjusted to the height of the frame 20 and the rake (30).

At this time, the degree to which the controller controls the operation of the first and second actuators 40 and 50 to elevate the frame 20 and the rake 30, that is, the control value is the height at which the abnormal object is detected through a number of experiments. Of course, it is possible to calculate the average value obtained by tableizing the amount of failures, etc., as a control value.

Here, as the detector 70 , an optical sensor that converts light energy into electrical energy using the photoelectric effect in which the material absorbs light energy and emits free electrons when light is applied to the material may be employed.

For example, it may be a device using an internal photoelectric effect (which changes electrical conductivity), such as a photoconductive cell or a photodiode.

In addition, a light emitter and a receiver are placed opposite to each other on both sides of the front of the conveyor (C), and a transmission type optical sensor that detects the scattering of light caused by an object moving in between, that is, moving across the optical path, or measures the amount of transmission may be employed. can

In addition, if there is an object that absorbs or blocks light, such as a reinforcing bar, while the emitter always emits light and the receiver receives it, a photoelectric switch that detects it and sends a switching signal to the controller can be employed.

The main action and operating principle of the rotary rake-type sorting device for removing light fractions of construction waste according to an embodiment of the present invention configured as described above will be described as follows.

First, when contaminants such as reinforcing bars protruding sharply above a certain height are mixed in waste and transported by the conveyor (C), this is detected before the detector 70 enters the lower part of the rake 30 and electric to the controller By transmitting a specific signal, the controller automatically controls the operation of the first and second actuators 40 and 50 to elevate the frame 20 and the rake 30 to a certain height or more. By preventing breakage and failure, the service life can be extended and the operation rate can be increased.

In addition, if there is no detection signal sent from the detector 70 to the controller for a certain period of time, the controller automatically controls the operation of the first and second actuators 40 and 50 to pre-set the frame 20 and the rake 30 . The rake 30 is rotated in a state lowered to a predetermined height or less.

That is, the controller and the first and second actuators 40 and 50 can adjust the height of the rake 30 flexibly according to the properties of the waste, thereby maximizing the selection efficiency of the light fraction.

In addition, the rake 35 of the rake 30 is composed of the first rake 35a and the second rake 35b of different lengths and is alternately arranged along the circumference of the rim 33, so that it is lowered on the conveyor C and transported It is also possible to effectively remove the light fraction in the waste.

In addition, the first rake (35a) and the second rake (35b) are arranged spirally along the longitudinal direction of the rake 30 at regular intervals or are arranged in a zigzag alternating with each other, so that the light plate widely distributed on the conveyor (C) It can be removed more densely and easily by increasing the number of times of contact with the collection.

Moreover, when installing the conveyor (C) in a state with an inclination according to the properties of the waste, the inclination of the rake 30 is flexibly adjusted according to the installation angle, and the rake 30 is stably maintained at an inclination. Thus, the screening efficiency and processing speed of light fractions can be improved at the same time.

At this time, the controller controls the first push rod 41 of the first actuator 40 to be placed in a contracted state to the bottom dead center located at the lowest end in the cylinder, and at the same time, the second push of the second actuator 50 The third push rod ( The sensor flap lever 62 connected to the end of the 61) by a pin joint and the anti-vibration pad 63 attached to the sensor flap lever 62 can be naturally and elastically in close contact with the lower surface of the frame 20. have.

In this process, the sensor flap lever 62 is connected to the third push rod 61 with a pin joint, so it flexibly moves at an angle corresponding to the inclination of the frame 20 like a joint and inclines naturally, and accordingly, the anti-vibration pad ( 63) absorbs vibration energy such as buffering, and is gently and perfectly in close contact with the lower surface of the frame 20, the detection switch 64 detects this and transmits an electrical signal to the controller, thereby stopping the operation of the third actuator 60 In this case, the third push rod 61 of the third actuator 60 can stably support the state in which the rake 30 is inclined.

[Example 2]

7 and 8, the conveyor (C) of the components constituting the rotary rake type sorting device for removing light fractions of construction waste according to the second embodiment of the present invention is usually a trough conveyor. This trough conveyor has a limitation in that it is difficult to separate and discharge fine foreign substances on the bottom of the conveyor (C) in a specific direction even when compressed air is sprayed using a nozzle due to the morphological nature of the trough conveyor. have.

In order to solve this problem, the rotary rake type sorting device for removing light fractions of construction waste according to Embodiment 2 of the present invention is a conveyor ( It is installed above C) and rotates in a direction orthogonal to the transmission direction of the conveyor (C) to remove garbage or contaminants mixed with the waste transported by the conveyor (C), and its main components are the support (10), It includes a frame 20 , a rake 30 , first to third actuators 40 , 50 , 60 , a controller (not shown), a detector 70 , and a compressor air feeder 80 .

And the rotary shaft 31 constituting the rake 30 is made of a hollow tube, and along the longitudinal direction of the rotary shaft 31, the injection hole 31a for spraying the compressed air supplied from the compressor air feeder 80 is radial. are formed in large numbers.

The compressor air feeder 80 is provided to generate compressed air according to a separate control signal and supply it to the nozzle 82 through the rotating shaft 31 .

Here, as the compressor air feeder 80 , a general air compressor structure that compresses air to increase pressure and speed and send the air may be adopted.

In addition, the injection hole (31a) can be formed in a circular or long hole (slot hole) shape, in particular, when formed in a long hole can be more smoothly and stably injecting compressed air into the nozzle (82).

In addition, the rim 33 constituting the rake 30 is made of a cylindrical hollow tube, and the nozzle 82 is radially disposed on the outer periphery between the rakes 35 along the longitudinal direction of the rim 33 . Many are arranged at equal intervals.

That is, the nozzle 82 is formed in a shape that tapers toward the end so that the cross-sectional area becomes smaller in the flow direction in order to eject the high-pressure air discharged through the injection hole 31a of the rotating shaft 31 into the free space at high speed. have.

And at the end of the supply pipe 81 connecting the rotary shaft 31 and the compressor air feeder 80 , a swivel joint 83 is installed as a pipe joint so that the rotary shaft 31 rotates freely.

Here, the swivel joint 83 is installed as a pipe joint that maintains airtightness in a part of the supply pipe 81 so that the rotating shaft 31 can freely rotate around the axis of the supply pipe 81 .

That is, the swivel joint 83 is installed as if connecting between the rotation shaft 31 and the supply pipe 81 so that the rotation shaft 31 of the rake, which rotates relative to the supply pipe 81, can rotate without interference.

Here, as the swivel joint 83, a conventional swivel joint structure that maintains airtightness so that fluid does not leak while allowing free and smooth rotation of the other side with a bearing or the like with respect to one side may be adopted.

The rotary rake type sorting device for removing light fractions of construction waste according to the second embodiment of the present invention configured as described above is fine powder attached to the waste transported by the conveyor (C) or various types of powder laid on the bottom of the conveyor (C). It is possible to increase the sorting efficiency by removing foreign substances with wind power.

That is, the nozzles 82, which are arranged radially between the prongs 35 of the rake 30, rotate in the direction of the outlet and comb foreign substances such as light fractions with compressed air from top to bottom in the discharge direction. Because it is pushed, it is possible to more efficiently remove various foreign substances lying on the bottom of the conveyor (C) that do not reach the fine powder or rakes 35 attached to the waste transported by the conveyor (C).

For example, the position on the conveyor (C) is frequently changed by applying an external force to the waste while the rakes (35) of the rake (30) rotate. It can be easily pushed toward the outlet.

Here, among the components related to the rotary rake-type sorting device for removing light fractions of construction waste according to the second embodiment of the present invention, the components having the same or similar operational effects as those of the first embodiment use the same reference numerals, A repetitive and detailed description thereof will be omitted.

On the other hand, the present invention is not limited by the above-described embodiment and the accompanying drawings, and can be variously modified and applied in various ways not illustrated within the scope without departing from the technical spirit of the present invention, as well as each It is clear to those of ordinary skill in the art to which the present invention pertains that it can be widely applied by changing the component substitution and other equivalent embodiments.

Therefore, the contents related to the modification and application of the technical features of the present invention should be interpreted as being included within the technical spirit and scope of the present invention.

10: support 20: frame
30: rake 31: axis of rotation
31a: injection hole 32: electric motor
33: rim 34: spoke
35: rake 36: wear pad
37: first holder 38: second holder
39: leaf spring 40: first actuator
41: first push rod 50: second actuator
51: second push rod 60: third actuator
61: third push rod 62: sensor flap lever
63: anti-vibration pad 64: detection switch
70: detector 80: compressor air feeder
81: supply pipe 82: nozzle
83: swivel joint

Claims (6)

In a rotary rake-type sorting device for removing light fractions of construction waste, which is installed above the conveyor and rotates in a direction perpendicular to the transmission direction of the conveyor to remove garbage or contaminants mixed with the waste transported by the conveyor,
Supports installed at regular intervals on the floor;
a frame positioned above the support;
a rake arranged to rotate by driving an electric motor on the inside of the frame, the rake having a plurality of teeth around the outside of the rim;
A first actuator fixed to one side of the support, the first push rod is connected to one side of the frame to elevate the rake by extension and contraction action;
a second actuator connected to the opposite side of the support by a pin joint, and a second push rod connected to the opposite side of the frame to elevate the rake by extension and contraction action;
a third actuator fixed to the opposite side of the support and supporting the opposite side of the frame when the third push rod is extended to keep the rake inclined at an angle;
a controller for controlling overall operations of the electric motor and the first to third actuators;
a sensor flap lever connected to the third push rod end of the third actuator by a pin joint;
a vibration-proof pad attached to a surface of the sensor flap lever facing the frame and elastically absorbing vibration energy; and
a detection switch provided on the frame facing the sensor flap lever and configured to detect a position of the sensor flap lever and transmit an electrical signal to the controller;
A rotary rake-type sorting device for removing light fractions of construction waste comprising a.
delete According to claim 1,
a detector installed on both sides of the conveyor, to detect the height of the waste transported by the conveyor and entering the rake, and transmitting an electrical signal to the controller;
A rotary rake-type sorting device for removing light fractions of construction waste further comprising a.
According to claim 1,
a wear pad attached to the end of the rake to reduce abrasion and increase friction with garbage or contaminants mixed with waste;
A rotary rake-type sorting device for removing light fractions of construction waste further comprising a.
According to claim 1,
The rake consists of first and second rakes having different lengths and is alternately arranged radially around the outer periphery of the rim, and the first and second rakes are spirally surrounded at regular intervals along the direction of the rotation axis of the rake or A rotary rake-type sorting device for removing light fractions of construction wastes arranged in a zigzag arrangement.
According to claim 1,
The rotation shaft of the rake is made of a hollow tube, and a plurality of injection holes for spraying compressed air supplied from an external compressed air feeder along the longitudinal direction of the rotation shaft are radially formed,
The rim of the rake is made of a cylindrical hollow tube, and a plurality of nozzles are arranged radially around the outer periphery between the prongs along the longitudinal direction of the rim,
A rotary rake type sorting device for removing light fractions of construction waste, in which a swivel joint is installed with a pipe joint so that the rotary shaft rotates freely at the end of the supply pipe connecting the rotary shaft and the compressor air feeder.

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