KR102532526B1 - Scrap separator having multi-layer structure for scrap collector - Google Patents

Abstract

A “scrap separator for a scrap collection device” is disclosed. In the "scrap separator for scrap collection device" according to the present invention, a scrap inlet 111a is formed on one side into which an input material (B + S) mixed with scrap (S) and dust (B) is input, and suction pressure is applied to the top. a separation housing 110 to which a dust collector 200 is coupled and in which the scrap S and the dust B are separated by a cyclone action caused by the suction pressure; It is coupled to the lower part of the separation housing 110 and includes a collecting hopper 120 in which scrap S separated from the separation housing 110 is collected.
Here, the inside of the separation housing 110 is coupled vertically to the top, discharges the dust separated from the scrap to the dust collector, and has a plurality of discharge holes 113a through which the dust (B) is sucked into the plate surface. (113) and; It is coupled horizontally to the lower part of the dust discharge pipe 113 and a plurality of through-holes 115a, 116a, and 117a are formed through the plate surface so that the ascending internal swirling airflow (A2) collides with the internal rising swirling airflow (A2). By increasing the turning radius, the moving speed of the scrap (S) moved together with the internal upturning airflow (A2) is reduced, and the dust (B) is guided to the dust discharge pipe (113). it is desirable

Description

Scrap separator having multi-layer structure for scrap collector}

The present invention relates to a scrap separator, and more particularly, to a scrap separator capable of preventing a strap from blocking a discharge path of dust by improving the separation efficiency of scrap introduced together with dust by being coupled to a scrap collection device.

In general, various sizes and types of by-products having a film form are generated in the production or processing process of electronic parts such as semiconductors, which are usually referred to as scrap. Scrap is collected by a scrap collection device and disposed of or recycled.

An example of a conventional scrap collection device has been disclosed in Registered Patent No. 10-1896490 "Scrap Collection Device".

A conventional scrap collection device as disclosed has a scrap separator for separating scrap and dust input from the outside, and a storage unit for storing the scrap separated from the scrap separator.

1 is a schematic diagram schematically illustrating a process in which a scrap separator 10 of a conventional scrap collection device separates scrap S. Referring to FIG.

As shown, the conventional scrap separator 10 includes a separation housing 11 having a scrap inlet 11a formed therein, a collection hopper 13 provided at the bottom of the separation housing 11 to collect scrap S, and An inner guide tube 12 provided inside the separation housing 11 to guide the moving path of the scrap S and dust B, and disposed vertically inside the inner guide tube 12 to guide the moving path of the dust B It includes a discharge pipe 15 for discharging to the outside.

A plurality of micro-blocking holes 12a are formed at the bottom of the inner guide tube 12 to block the inflow of the scrap S.

The discharge pipe 15 of the separation housing 11 is connected to the dust collector 20, and suction pressure is applied to the inside of the separation housing 11 so that the input material (B+S) injected into the scrap inlet 11a is scrap (S) and dust (B). The separation housing 11 separates the scrap S and the dust B mixed in the input material B+S by a cyclone action. As shown, the input materials (B+S) descend along the inner wall surface of the separation housing 11 from the scrap inlet 11a while turning by the centrifugal force. In this process, the relatively heavy scrap (S) receives more centrifugal force than the dust (B), so it collides with the inner wall surface of the separation housing (11) and continuously falls into the collection hopper (13) below and is separated. .

On the other hand, the dust (B) with a light specific gravity reverses and ascends and is introduced into the discharge pipe 15 and then discharged through the dust collector 20.

However, since the drag force is large in the case of the scrap S having a large area to weight ratio, when a part of the scrap S meets the updraft while falling along with the outer swirling flow A1, it is transferred to the collection hopper 13. There is a case of rising together with the dust (B) without falling, and the case of blocking the micro-blocking hole (12a) of the inner guide tube (12) occurs frequently.

As shown enlarged in FIG. 1, when the scrap (S) blocks the micro-blocking hole (12a), the dust (B) moves to the discharge pipe (15), and the dust (B) and the fluid are not discharged to the outside. there is

In addition, if the flow of the fluid transporting the scrap (S) and the dust (B) is blocked, the collection of the scrap is not possible in the area where the scrap (S) is generated, and a defect may occur, and the suction flow rate is reduced or blocked in the dust collecting means problems can arise.

Document 1. Korean Intellectual Property Office, Registration No. 10-1896490, "Scrap Collection Device" Document 2. Korean Intellectual Property Office, Registration No. 10-1694655, "Cyclone Dust Collector"

An object of the present invention is to solve the above-mentioned problems, and to change the movement path of the internal ascending swirling air flow, to divide the discharge path into the upper and lower parts of the impact plate, and to reduce the turning radius of the internal ascending swirling air flow including scrap and dust. It is to provide a scrap separator in which smooth separation of scrap and dust is achieved by increasing the.

The above object of the present invention can be achieved by a scrap separator that is coupled to a scrap collection device to separate scrap and dust. The scrap separator of the present invention has a scrap inlet (111a) formed on one side of the input into which the mixed input (B + S) of scrap (S) and dust (B) is input, and a dust collector 200 for applying suction pressure to the top is coupled, and the separation housing 110 in which the separation of the scrap (S) and the dust (B) proceeds by the cyclone action by the suction pressure; It is coupled to the lower part of the separation housing 110 and includes a collecting hopper 120 in which scrap S separated from the separation housing 110 is collected.

Here, the inside of the separation housing 110 is coupled vertically to the top, discharges the dust separated from the scrap to the dust collector, and has a plurality of discharge holes 113a through which the dust (B) is sucked into the plate surface. (113) and; It is coupled horizontally to the lower part of the dust discharge pipe 113 and a plurality of through-holes 115a, 116a, and 117a are formed through the plate surface so that the ascending internal swirling airflow (A2) collides with the internal rising swirling airflow (A2). By increasing the turning radius, inertial force is given to the external swirling flow (A1) of the scrap (S) moving along with the internal ascending swirling air flow (A2), and the dust (B) is guided to the dust discharge pipe (113) by two or more It is preferable to include collision plates (115, 116, 117).

The scrap separator of the present invention increases the turning radius of the internal ascending swirling airflow containing scrap and dust by disposing a plurality of collision plates that change the path of the internal ascending swirling airflow that rotates and rises inside the separation housing.

In the area where the turning radius of the internal upturning airflow is the largest, a rapid flow change occurs in the inside upturning airflow, and at this time, scrap and dust included in the airflow are collected, showing high collection efficiency.

In addition, in order to send the dust that does not want to be collected in the collecting hopper to the dust collector, the maximum swirling of the internal ascending swirling airflow is achieved through the suction holes formed on each impact plate with a suction force that does not collect scraps along the moving path of the internal ascending swirling airflow. It collects dust until it reaches the radius. This increases the selective separation performance of scrap and dust.

The scrap separator of the present invention shows high scrap collection performance and sends most of the dust to the dust collecting device, and compared to the conventional scrap separator having an inner guide tube and micro-blocking holes, the separation efficiency of scrap and dust is improved and the scrap is dust-free. It has the advantage of solving the problem of blocking the discharge path.

1 is an exemplary diagram schematically illustrating a process of separating scrap and dust by a conventional scrap separator;
2 is a perspective view showing the configuration of a scrap separator according to the present invention;
Figure 3 is a cross-sectional example showing the process of separating scrap and dust by the scrap separator according to the present invention;
Figure 4 is a plan view showing the configuration of the multi-stage impact plate of the scrap separator according to the present invention;
5 is an enlarged view illustrating a process in which scrap is separated through a multi-stage collision plate in the scrap separator according to the present invention;
6 and 7 are CFD images showing the process of rising and discharging the internal swirling airflow of the scrap separator according to the present invention.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention and accompanying drawings, but the same reference numerals in the drawings will be described on the premise that they refer to the same components.

When it is said that any one component "includes" another component in the detailed description of the invention or in the claims, it is not construed as being limited to the component alone unless otherwise stated, and other components are not included. It should be understood that more can be included.

2 is a diagram schematically showing the configuration of a scrap collection device 1 equipped with a scrap separator 100 according to the present invention, and FIG. 3 is a view of scrap S and dust B in the scrap separator 100 It is a cross-sectional view showing a separation path.

As shown, the scrap collection device 1 includes a scrap separator 100 in which scrap S and dust B are separated from an input material B+S input from the outside, and an upper part of the scrap separator 100. The dust collector 200 provided in the dust collector 200 to apply dust collection pressure to separate the scrap S and the dust B by the action of a cyclone, and the separated scrap S stored under the scrap separator 100. It includes a storage unit 30 to be.

The scrap separator 100 of the present invention separates scrap (S) and dust (B) from the input (B + S) input from the outside, the scrap (S) is moved to the storage unit 30, and the dust (B) It is discharged to the dust collector 200. The scrap separator 100 of the present invention is provided in the separation housing 110 in which the separation process of scrap (S) and dust (B) is progressed by the action of a cyclone, and is provided in the lower part of the separation housing 110 to determine the centrifugal force and the specific gravity difference It includes a collecting hopper 120 in which the scraps S falling by are collected, and a transfer pipe 130 which transfers the scraps S collected in the collecting hopper 120 to the storage unit 30.

The separation housing 110 is coupled to the housing main body 111 formed in the shape of a cylindrical tube and the upper part of the housing main body 111, and the input material containing scrap S and dust B into the housing main body 111. An input pipe 112 for injecting (B + S), a dust discharge pipe 113 disposed vertically inside the separation housing 110 to discharge dust B to the dust collector 200, and a dust discharge pipe ( 113) includes multi-stage impact plates 115, 116, and 117 coupled to the lower portion of the dust B and deforming the airflow of the scrap S rising together so that the dust B and the scrap S are separated and collected.

Here, the symbol A1 shown in the figure means an external descending swirling air flow generated while the input material (B+S) in which scrap (S) and dust (B) are mixed together rotates along the inner wall of the housing body 111, and , Symbol A2 means the internal upward swirling airflow A2 generated inside the separation housing 110 and the collection hopper 120. The principle of generation of the internal ascending swirling air flow (A2) is the same as that of the centrifugal dust collector, the cyclone.

The internal ascending swirling air flow (A2) may include scrap (S) and dust (B) mixed together or only dust (B). Symbols A3, A4, and A5 are some airflows moving toward the inner wall surface of the housing body 111 in the internal upward swirling airflow A2 after colliding with the multi-stage collision plates 115, 116, and 117, and are generated as the turning radius is increased by the collision plates. It is created by the inertial force and the centrifugal force of turning. At this time, it means an outside moving airflow including the scrap (S) moving with the airflow.

Symbols A2-1, A2-2, A2-3, and A2-4 classify the airflow discharged from the internal ascending airflow (A2) to the dust discharge pipe 113, and scrap does not pass through, only dust to be separated and discharged passes. is configured to

The airflows A3, A4, and A5 are airflows in which the radius of rotation increases in the inner direction of the housing body 111 in the internal upward swirling airflow A2, and the airflows A2-1, A2-2, A2-3, and A2-4 are the internal airflows. From the rising swirling airflow A2 to the discharge pipe 113, the swirling flow in the separation area is increased, and has the opposite characteristic.

Here, A2-1, A2-2, and A2-3, except for the airflow A2-4 flowing into the discharge hole 113a where the main internal upturn airflow A2 is discharged, have relatively small centrifugal force to prevent adhesion of scrap. It is necessary to adjust the appropriate pressure difference and contact area for this purpose.

Here, the pressure difference and the contact area are the adhesive force of the scrap, and detailed adjustment is required to make the adhesive force smaller than the drag force of the scrap generated by the swirling air flow in the area. .

An inlet 111a is formed on the inner wall surface of the housing body 111 and communicates with the inlet pipe 112 so that the input material B+S flows into the inside. The lower part of the housing body 111 is provided to be inserted into the collecting hopper 120 at a predetermined depth and opens toward the collecting hopper 120. As a result, the dust (B) and the scrap (S) separated by the cyclone action fall into the collecting hopper (120).

The dust discharge pipe 113 is coupled to be inserted into the interior from the top of the housing body 111 at a certain depth, and discharges the separated dust B to the dust collecting device 200. In addition, the dust discharge pipe 113 applies the suction pressure applied from the dust collector 200 to the inside of the housing body 111 .

The lower part of the dust discharge pipe 113 is coupled to the upper collision plate 115, and a plurality of discharge holes 113a are formed through the outer wall surface. The dust B sucked through the through-holes 115a, 116a, and 117a formed in the multi-stage impact plates 115, 116, and 117 and the dust B sucked into the discharge hole 113a move along the inside of the dust discharge pipe 113. It is discharged to the outside through the dust collector 200.

Here, the discharge hole 113a is formed at a position spaced apart from the airflow direction changing plate 115 at a predetermined height (h).

The multi-stage collision plates 115, 116, and 117 are horizontally arranged at different heights at the lower part of the dust discharge pipe 113, and the turning radius of the internal rising swirling air flow A2 rising together with the scrap S and dust B is set to the corresponding collision plate. It extends larger than the outer diameter of (115, 116, 117).

4 is a plan view showing the plan configuration of the multi-stage impact plates 115 , 116 , and 117 , and FIG. 5 is an exemplary view illustrating a process in which scrap S is separated from the multi-stage impact plates 115 , 116 , and 117 .

The scrap separator 100 according to a preferred embodiment of the present invention is provided with three impact plates 115, 116 and 117 of an upper impact plate 115, an intermediate impact plate 116 and a lower impact plate 117. However, this is only an example, and the total intake area determined by the number of collision plates, the gaps h1 and h2, and the opening ratio of the lower collision plate 117 disposed at the bottom is the upper portion of the upper collision plate 115. As the air flow, the upper outer moving air flow A5, is weakened, the scrap S moves with the 4th dust air flow A2-4 and can be increased or decreased within a range that does not block the discharge hole 113a.

In addition, it is possible to more stably prevent the attachment of the scrap (S) by blocking the suction surface with a continuous net on the outside of the collision plates (115, 116, 117). Its shape may follow the shape of the inner collision plate to have a step, or it may be formed to have a conical continuous slope. However, when implemented in the form of a network formed on the outside, it is preferable to adjust the suction speed or differential pressure according to the position to prevent adhesion of scrap.

At this time, it is possible to sufficiently control the intake speed by using a net or perforated plate on the outside, so that the internal collision plates 116 and 117 can be omitted when there is no attachment of the scrap (S).

The plurality of collision plates 115 , 116 , and 117 are provided in the form of disks formed horizontally under the dust discharge pipe 113 . Inside the housing body 111, the dust discharge pipe 113 and the plurality of collision plates 115, 116, and 117 are provided in the form of concentric circles having different outer diameters. The upper impact plate 115, the middle impact plate 116, and the lower impact plate 117 are formed through the plate surface, respectively, and have a lower through hole 117a and an intermediate through hole for guiding the dust B to the dust discharge pipe 113. (116a) and an upper through hole (115a) are provided.

The upper impact plate 115 is fixedly coupled to the lower part of the dust discharge pipe 113, and the middle impact plate 116 and the lower impact plate 117 are spaced apart from each other below the upper impact plate 115.

Each collision plate (115, 116, 117) rotates from the bottom to the top and collides with the moving internal ascending swirling air current (A2), hinders the vertical movement of the internal ascending swirling air flow (A2), and increases the turning radius of the internal ascending swirling air flow (A2). do.

As shown in FIGS. 2 and 3, after being introduced into the inlet 111a, the input material (B + S) rotates clockwise by the centrifugal force and moves along the external downturn airflow (A1), and in this process, the scrap ( S) is separated by the difference in specific gravity. In addition, the internal upturning airflow A2 generated at the center of the housing body 111 and the collecting hopper 120 rotates inside the external downturning airflow A1 in a counterclockwise direction and rises.

The upward movement of the ascending internal swirling airflow A2 is blocked by the lower impact plate 117 and moves outward along the surface of the lower impact plate 117 . At this time, the flows in the outermost area adjacent to the center of the internal upturning airflow (A2) and the outside downturning airflow (A1) show different flows.

A part of the central airflow of the internal rising swirling airflow A2 becomes the primary dust airflow A2-1 and is discharged including dust through the lower through hole 117a of the lower impact plate 117. A part of the outer shell airflow of the inner upturning airflow (A2) becomes the lower outer moving airflow (A3) and transfers the scrap (S) to the outer downturning airflow (A1) for collection.

The central airflow of the internal upturning airflow A2 collides with the lower impingement plate 117 and has a radial velocity component, and the rotational radius of the inside upturning airflow A2 is enlarged.

On the other hand, the outermost airflow of the internal upward swirling airflow (A2), which collides with the lower impact plate 117 and has an extended turning radius, collides with the middle impact plate 116, has a secondly expanded turning radius, and 2 The differential dust collector A2-2 passes through the secondary dust inlet 116b and is discharged to the dust collector through the middle through hole 116a.

In addition, after colliding with the middle impact plate 116, the ascending internal swirling airflow (A2) collides with the upper impact plate 115, the turning radius is expanded to the third order, and the tertiary dust airflow (A2-) containing dust (B) 3) is sucked into the dust discharge pipe 113 through the upper through hole 115a through the tertiary dust inlet 115b.

In this way, the upward swirling airflow A2 collides with the plurality of collision plates 115, 116, and 117 arranged in multiple stages, gradually expanding the turning radius, and moving the scrap S to the discharge hole 113a formed at the bottom of the dust discharge pipe 113. Therefore, it is impossible to maintain a speed sufficient to block the discharge hole 113a, and only the light dust particles B are sucked into the discharge hole 113a.

Here, the multi-stage impact plates 115, 116, and 117 of the present invention are provided so that the outer diameters of the impact plates 115, 116, and 117 decrease from top to bottom in order to gradually expand the turning radius of the internal ascending swirling airflow A2 moving from the bottom to the top ( R3>R4>R5).

In addition, the sizes of the through holes 115a, 116a, and 117a formed in the collision plates 115, 116, and 117 decrease from top to bottom (r1>r2>r3). In addition, the distance between the collision plates 115, 116, and 117 increases from top to bottom (h1 < h2).

As shown in (a) (b) (c) of FIG. 4, the upper impact plate 115, the middle impact plate 116, and the lower impact plate 117 are formed in a disc shape. At this time, the outer diameter R3 of the upper impact plate 115 is formed larger than the outer diameter R4 of the middle impact plate 116, and the outer diameter R4 of the middle impact plate 116 is that of the lower impact plate 117. It is formed larger than the outer diameter (R5) (R3>R4>R5).

As shown in (c) of FIG. 4, the outer diameter R5 of the lower collision plate 117 has a certain range corresponding to the outer diameter R2 of the dust discharge pipe 113 (R2/2<R5<3R2/2 ). The lower through hole 117a is uniformly formed along the entire area around the lower central hole O3.

As shown in (b) of FIG. 4, the intermediate impact plate 116 is formed to have an outer diameter R4 between the lower impact plate 117 and the upper impact plate 115.

The intermediate through hole 116a should be formed in an area smaller than the outer diameter R5 of the lower collision plate 117 and is formed around the intermediate central hole O2. The area where the middle through hole 116a is formed is smaller than the area of the lower impact plate 117, so that only the dust B moved through the lower through hole 117a is concentrated inward and then moved through the upper through hole. (115a).

As shown in (a) of FIG. 4, the upper impact plate 115 is formed to have a larger outer diameter R3 than the middle impact plate 116. Here, the outer diameter R3 of the upper collision plate 115 is preferably formed in a range of 40 to 90% of the inner diameter R1 of the housing body 111 . When the outer diameter R3 of the upper impact plate 115 is smaller than 40% of the inner diameter R1 of the housing body 111, the static pressure loss is reduced. As a result, the radial velocity component generated by the collision of the internal ascending swirling airflow A2 is reduced, resulting in a problem in that the ratio of the scrap S moved to the upper part of the upper impact plate 115 increases.

Conversely, when the outer diameter R3 of the upper impact plate 115 is greater than 90% of the inner diameter R1 of the housing body 111, the static pressure loss increases. As a result, a part of the external descending swirling air flow (A1) including the scrap (S) and dust (B) descending from the upper part of the upper collision plate 115 is directly discharged to the discharge hole (113a), and the scrap (S) is discharged through the discharge hole A phenomenon of blocking 113a may occur.

The upper through hole 115a should be formed in an area smaller than the outer diameter R4 of the intermediate impact plate 116 and is formed around the upper central hole O1. Here, the upper through hole 115a, the middle through hole 116a, and the lower through hole 117a are formed in different shapes to filter the movement of the scrap S and to transfer only the dust B to the upper part. It is desirable to have

In addition, the diameter r1 of the upper through hole 115a is greater than the diameter r2 of the middle through hole 116a, and the diameter r2 of the middle through hole 116a is the diameter r3 of the lower through hole 117a. ) can reduce static pressure loss and apply pressure capable of inhaling only dust (B).

In the same principle, the distance h2 between the lower impact plate 117 and the middle impact plate 116 is equal to or greater than the distance h1 between the middle impact plate 116 and the upper impact plate 115. .

As shown in FIG. 5, the internal ascending swirling airflow A2 turns and rises at the first speed V1, collides with the lower impact plate 117, and is prevented from moving in a straight line. The small-particle dust (B) rises through the lower through hole (117a) of the lower collision plate (117) together with the primary dust stream (A2-1). The internal upturning airflow A2 containing the scrap S is moved outward along the surface of the lower impact plate 117 . At this time, the internal upturning airflow A2 collides with the lower impact plate 117 and receives resistance to decrease speed (V1 < V2).

The scrap (S) has a large surface area compared to its mass and has a high drag. When colliding with the lower impact plate 117, the scrap S is pushed outward from the lower impact plate 117 in a state where the velocity component in the radial direction is increased. At this time, some of the outer shell airflows having a large turning radius of the inner upturning airflow (A2) are swept away by the lower outer moving airflow (A3) and escape from the inside upturning airflow (A2), and then move along with the outside downturning airflow (A1). It descends and is separated and collected in the collection hopper 120.

As the width between the lower impact plate 117 and the housing body 111 is narrowed, the effect of the speed of the external descending swirling airflow A1 becomes greater. A radial direction velocity component is generated by the collision with the lower impact plate 117 . At this time, the scrap (S) is forcibly moved to the fast external downturning airflow (A1) at the interface between the internal upturning airflow (A2) with a lower turning speed and the outer downturning airflow (A1) with a faster turning speed. It is separated from the internal upturn airflow A2 by a radial velocity component.

In particular, in the case of scrap (S) with a large area and high drag, even if only a part of the shape of the scrap (S) is in contact with the fast external descending swirling air (A1), it is strongly moved downward and is removed from the internal ascending swirling air (A2). It will improve the performance of separating (S)

Meanwhile, after colliding with the lower impact plate 117, the internal upturning airflow A2 moves upward. At this time, the gap h2 between the lower impact plate 117 and the middle impact plate 116 and the secondary dust suction hole 116b formed by the middle impact plate 116 of the internal upward swirling air flow A2 Part of it is discharged including dust, and the speed of the internal swirling air flow (A2) is reduced.

The internal upward swirling airflow A2 moved upward collides with the intermediate impact plate 116. A part of the inner airflow having a small turning radius of the internal upturning airflow A2 that collided with the intermediate collision plate 116 and the dust B included in it pass through the middle through hole 116a after passing through the tertiary dust inlet 115a. go to the top Then, the internal upturning airflow (A2) containing the scrap (S) collides with the intermediate impact plate (116) and the speed is reduced (V3 < V2).

Among the internal upsurges (A2) with reduced speed, some with a large turn radius are pushed outward along with the middle outward moving airs (A4) affected by vorticity, and are transferred to the fast descending external downsurges (A1). swept away And, the scrap (S) included in the middle outward moving airflow (A4) is swept away by the external downturning airflow (A1) under the influence of drag and is separated from the middle outward moving airflow (A4) and descends together with the outside downturning airflow (A1). do.

On the other hand, the internal upturning airflow A2 of the third velocity V3 moved to the upper part of the intermediate impact plate 116 collides with the upper impact plate 115 having a larger outer diameter than the intermediate impact plate 116 and has a turning radius becomes larger and the speed decreases further to the fourth speed (V3 < V4). Some of the airflow in the area with a small turning radius among the internal ascending swirling airflow (A2) with reduced speed and the dust (B) included in it pass through the tertiary dust inlet (115b) together with the tertiary dust airflow (A2-3) at the upper part It is sucked into the dust discharge pipe 113 through the through hole 115a and moved.

The internal upturning airflow (A2) hitting the upper impact plate 115 is pushed outward along with the upper outward moving airflow (A5) affected by the vorticity, and is swept away by the external downturning airflow (A1) that descends at a high speed. all.

Here, the external descending swirling air flow (A1) is faster at the upper part, so the speed difference between the upper outer moving air flow (A5) and the outer descending swirling air flow (A1) is The difference in speed between the lower outward moving airflow (A3) and the outer descending swirling airflow (A1) is significantly greater than the speed difference between

Accordingly, the scrap (S) included in the upper outer moving air flow (A5) is almost swept away by the outer descending swirling air flow (A1) and is separated from the upper outer moving air flow (A5) and descends together with the external descending swirling air flow (A1). The light dust (B) from which the scrap (S) is separated in this way is sucked into the discharge hole (113a) together with the 4th dust stream (A2-4).

Here, the height h at which the discharge hole 113a is formed in the dust discharge pipe 113 is preferably formed in a section where the vorticity of the internal ascending swirling airflow A2 increases. This is because the upper outer moving airflow (A5) containing the scrap (S) turns and rises at the height, which is the section where the vorticity is strong, and is pushed inside the housing body 111 by the centrifugal force and moves together with the external descending swirling airflow (A1). This is because only relatively light dust (B) is sucked into the discharge hole (113a) without escaping the rising fourth dust airflow (A2-4).

Here, when the flow rate of the input (B+S) injected into the inlet 111a of the housing body 111 is Qin, the upper outer moving air flow when the input material (B+S) descends along the external descending swirling air flow (A1) The flow rate (Q _A5 ) of (A5) is added. Accordingly, the flow rate (Qmax) of the internal ascending swirling airflow (A2), which is inverted from the bottom and rises, becomes the maximum as Qin + _QA5 .

The scrap separation process of the scrap separator 100 according to the present invention having such a configuration will be described with reference to FIGS. 2 to 5 .

As shown in FIG. 2, the scrap separator 100 of the present invention is coupled to the scrap collection device 1 to separate the scrap S and dust B included in the input material B + S input from the outside. . The input material (B+S) is input through the input tube 112 and flows into the input port 111a of the housing body 111 .

The dust discharge pipe 113 vertically disposed on the upper part of the housing body 111 is connected to the dust collector 200, and the dust suction pressure applied from the dust collector 200 acts on the inside of the housing body 111. By the action of the suction pressure, the cyclone principle is applied inside the housing body 111, and the input material (B + S) is moved along the outer surface of the dust discharge pipe 113 along the external descending swirling air flow (A1) to the housing body ( 111) descends while turning on the inner wall surface.

In this process, the scrap (S) and the dust (B) mixed with the input material (B + S) are separated due to the difference in specific gravity, and the scrap (S) falls into the collection hopper 120 and is separated.

The scrap (S) and dust (B) moved to the lower part of the collection hopper 120 are collected in the collection hopper, and the uncollected scrap (S) and dust (B) are rotated along the rising internal rising swirling air flow (A2). and is moved The internal ascending swirling airflow A2 rises and collides with the lower impact plate 117, increasing the turning radius of the swirling flow.

As shown in FIG. 5, the internal upturning airflow A2 rises and collides with the lower impact plate 117, and the turning radius is firstly expanded. The dust (B) included in the internal rising swirling air flow (A) is moved upward through the lower through hole (117a) together with the primary dust air flow (A2-1).

At this time, the centrifugal force generated while turning and the speed component in the radial direction generated by the air flow direction changing plate 115 are added to the scrap (S) included in the internal upturning airflow (A2), and the external downturning airflow (A1) and meet

In addition, the scrap (S) included in the internal upturning airflow (A2) advances towards the outside downturning airflow (A1) by the lower outward moving airflow (A3) with the addition of the centrifugal force and radial inertial force, and has a relatively drag force. The large scrap (S) is separated from the internal upward swirling airflow (A2) by the high speed of the external downward swirling airflow (A1) descending between the lower collision plate 117 and the inner wall surface of the housing body 111, and the external downward spiraling airflow (A2) It descends with the swirling air flow (A1).

The internal upturning airflow A2 including the scrap S moved upward along the surface of the lower impact plate 117 moves upward and collides with the middle impact plate 116, so that the turning radius is secondarily expanded. The dust (B) included in the internal upward swirling air flow (A2) is moved upward through the middle through hole (116a) together with the secondary dust air flow (A2-2). Some of the scrap (S) included in the internal upturning airflow (A2) whose speed is secondarily reduced by the collision is pushed to the outer wall surface by the middle outward moving airflow (A4), and It is separated from the middle outward moving airflow (A4) by the speed difference and descends together with the external descending swirling airflow (A1).

On the other hand, the internal upturning airflow A2 containing the scrap S moved to the upper part of the middle impact plate 116 collides with the upper impact plate 115 again, and the turning radius is expanded in a third order. The dust (B) included in the internal upward swirling air flow (A2) is moved to the dust discharge pipe (113) through the upper through hole (115a) together with the tertiary dust air flow (A2-3).

The scrap (S) included in the internal ascending swirling airflow (A2) with a three-dimensionally extended turning radius is pushed to the outer wall surface by the upper outer moving airflow (A5) and is moved due to the large speed difference with the external descending swirling airflow (A1). Most of them are separated from the upper outward moving airflow (A5) and descend together with the external descending swirling airflow (A1).

Then, the dust (B) moved to the upper part of the upper collision plate 115 is sucked into the discharge hole (113a) together with the 4th dust stream (A2-4).

As a result, the scrap (S) included in the internal ascending swirling airflow (A2) moves upward and collides with the multi-staged colliding plates (115, 116, 117), and the speed is reduced, resulting in a relatively high speed external descending swirling airflow (A1) and descend together Therefore, the conventional problem of blocking the discharge path of the dust (B) by blocking the surface of the discharge hole (113a) with the scrap (S) can be solved.

6 and 7 are computational analysis (CFD) images showing a process in which the scrap separator 100 of the present invention separates scrap and dust.

As shown in FIGS. 6 and 7, the internal upward swirling airflow rises and collides with each of the collision plates 115, 116, and 117 to expand the turning radius, and the discharge hole 113a of the discharge pipe 113 at the top of the upper collision plate 117 It can be seen that dust is emitted.

As described above, the scrap separator of the present invention increases the turning radius of the internal ascending swirling airflow containing scrap and dust by arranging a plurality of collision plates that change the path of the internal ascending swirling airflow that rotates and rises inside the separation housing. let it

In the area where the turning radius of the internal upturning airflow is the largest, a rapid flow change occurs in the inside upturning airflow, and at this time, scrap and dust included in the airflow are collected, showing high collection efficiency.

In addition, in order to send the dust that does not want to be collected in the collecting hopper to the dust collector, the maximum swirling of the internal ascending swirling airflow is achieved through the suction holes formed on each impact plate with a suction force that does not collect scraps along the moving path of the internal ascending swirling airflow. It collects dust until it reaches the radius. This increases the selective separation performance of scrap and dust.

The scrap separator of the present invention shows high scrap collection performance and sends most of the dust to the dust collecting device, and compared to the conventional scrap separator having an inner guide tube and micro-blocking holes, the separation efficiency of scrap and dust is improved and the scrap is dust-free. It has the advantage of solving the problem of blocking the discharge path.

The technical idea of the present invention was examined through several examples.

It is obvious that a person skilled in the art to which the present invention pertains can variously modify or change the above-described embodiments from the description of the present invention. In addition, even if not explicitly shown or described, a person skilled in the art may make various modifications from the description of the present invention to the technical idea according to the present invention. is obvious, which still belongs to the scope of the present invention. The above embodiments described with reference to the accompanying drawings are described for the purpose of explaining the present invention, and the scope of the present invention is not limited to these embodiments.

1: scrap collection device 10: scrap separator
11: separate housing 11a: scrap inlet
12: inner guide tube 12a: micro-blocking hole
13: collection hopper 15: discharge pipe
15a: discharge hole 20: dust collector
30: storage unit 100: scrap separator
110: separate housing 111: housing body
111a: scrap inlet 112: scrap inlet pipe
113: dust discharge pipe 113a: discharge hole
115: upper collision plate 115a: upper through hole
115b: 3rd dust inlet 116: intermediate impact plate
116a: middle through hole 116b: secondary dust inlet
117: lower impact plate 117a: lower through hole
120: collection hopper
A1: External downturning air flow
A2: internal upswing airflow
A2-1: Primary dust air
A2-2: 2nd dust air
A2-3: 3rd dust air
A2-4: 4th dust air
A3: Lower outward moving air flow
A4: Mid-outward moving air flow
A5: Upper outward moving air flow
B+S: input
B: dust
S: scrap

Claims (4)

In the scrap separator coupled to the scrap collection device to separate scrap and dust,
A scrap inlet 111a is formed on one side, into which an input material (B+S) in which scrap (S) and dust (B) are mixed is introduced, and a dust collector 200 for applying suction pressure is coupled to the top, and the suction pressure Separation housing 110 in which the separation of the scrap (S) and the dust (B) proceeds by the cyclone action by;
It is coupled to the lower part of the separation housing 110 and includes a collection hopper 120 in which scrap S separated from the separation housing 110 is collected.
Inside the separation housing 110, a dust discharge pipe 113 coupled vertically to the top and having a discharge hole 113a through which the dust (B) is sucked through the plate surface to discharge dust separated from scrap to the dust collector class;
It is coupled horizontally to the lower part of the dust discharge pipe 113 and a plurality of through-holes 115a, 116a, and 117a are formed through the plate surface so that the ascending internal swirling airflow (A2) collides with the internal rising swirling airflow (A2). By increasing the turning radius, the moving speed of the scrap (S) moved together with the internal ascending swirling airflow (A2) is reduced, and the dust (B) is guided to the dust discharge pipe (113). ,
The collision plates (115, 116, 117) are provided with three or more,
The collision plates 115, 116, and 117 are formed in a disk shape,
The gap between the neighboring collision plates 115, 116, and 117 is provided to become wider toward the bottom,
The three or more collision plates (115, 116, 117) are scrap separator, characterized in that the area decreases as it goes downward and the size of the through holes (115a, 116a, 117a) formed on the plate surface decreases. delete delete According to claim 1,
Scrap separator, characterized in that the outer diameter of the upper impact plate 115 located at the top of the plurality of impact plates 115, 116, 117 is formed in the range of 40 to 90% of the inner diameter of the separation housing 110.

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