KR102236075B1 - A Waste Selection System - Google Patents

Abstract

The present invention relates to a system for sorting waste and, more particularly, to a system for sorting waste in which casting lumps generated in the foundry and a lump of waste foundry sand mixed with sand are introduced into the hopper and transferred to the primary conveyor, the casting lumps are first separated through the primary magnetic separator in the middle, the waste casting sand mass from which the casting lumps were first separated is additionally pulverized through a crusher and transported through a secondary conveyor to further separate the casting lumps with a secondary magnetic separator, the mass of waste foundry sand supplied through the secondary conveyor is supplied through guide passages provided for each size, the mass of waste foundry sand of the desired size is separated from the screen unit installed at the same height, and large lumps that have not been separated are fed back to the crusher to efficiently obtain high-quality recycled sand that can be regenerated from the pulverized mass of the waste foundry sand.

Description

Waste Selection System {A Waste Selection System}

The present invention relates to a system for sorting waste, and more particularly, a mass of waste foundry sand produced by mixing a mass of foundry and sand generated in a foundry factory is introduced into a hopper and transferred to a primary conveyor, while a primary magnetic separator in the middle. The casting mass is firstly separated through the process, and the waste foundry sand mass from which the casting mass is first separated is further crushed through a crusher and transferred through a secondary conveyor to further separate the casting mass with a secondary magnetic separator, and the secondary conveyor is removed. The waste foundry sand mass supplied through is supplied through a guide passage provided for each size, and the waste foundry sand mass of the desired size is separated from the screen unit installed at the same height, and the large mass that is not separated is fed back to the crusher. It relates to a waste sorting system that efficiently obtains recycled sand of good quality that can be recycled.

Waste casting companies bring in general sand from foundry factories nationwide and make a model using the molten iron in the casting manufacturing process. Sand is poured between the model frame and the model frame to prevent the metal from sticking to each other. The sand used at this time Once used, the molten metal mixes with sand and deteriorates due to strong heat, so it cannot be used anymore and is discarded as waste.

Among the waste foundries that are disposed of as wastes, clay caking foundry sands are multi-divided into recyclable materials such as embankment materials and concrete secondary product raw materials, but chemical caking casters are mostly disposed of in landfills because recycling is limited.

Due to the rapid increase in industrial activities in recent years, a large amount of waste foundry including casting masses is being discharged as the production of machinery and molds to order has increased. Therefore, the importance of recycling waste foundry, which is generated in large quantities, is emphasized not only in terms of saving resources and energy, but also in terms of environmental protection.

In addition, since enormous amounts of waste foundry cannot be recycled, landfill, illegal dumping, and negative treatment cause environmental pollution, the recycling of waste foundry is emerging as an important task.

In particular, in order to recycle the waste foundry sand, a system that efficiently separates the foundry mass mixed with the waste foundry sand and pulverizes the waste foundry sand lump from which the cast mass is separated into the size of aggregate required for regeneration is more urgently required.

KR 10-0467420 (registration number) 2005.01.24. KR 10-1177303 (registration number) 2012.08.30. KR 20-0376273 (registration number) 2005.03.11.

Accordingly, the present invention was devised to solve the conventional problem as described above,

The crushed mass of the waste foundry sand is introduced into the hopper and transferred to the primary conveyor, and the cast mass is firstly separated through the first magnetic separator, and the waste foundry sand from which the cast mass was first separated is further crushed through a crusher. The purpose of this is to provide a waste sorting system in which two pairs of upper and lower crushing rollers are installed to pulverize the waste foundry sand firstly from the top and secondly from the lower side to effectively produce high-quality recycled sand masses.

Another object of the present invention is to expand the range of use of sand by adjusting the size of the waste foundry sand by adjusting the distance between the upper and lower crushing rollers provided in the crusher.

Another object of the present invention is to further separate the casting mass with a secondary magnetic separator while transporting the waste foundry sand crushed through a crusher through a secondary conveyor, and through a guide passage through which the recycled sand mass transferred through the secondary conveyor passes by size. It is to increase the screen efficiency of the reclaimed sand mass by supplying it to the screen section installed at the same height as the end height of the secondary conveyor to prevent the reclaimed sand mass from accumulating on the screen section.

Another object of the present invention is to further increase the productivity of recycled sand by constructing a route for feeding waste foundry sand that has not been separated from the screen after being pulverized beyond the standard to be fed back to the crusher through a conveyor.

The present invention includes a hopper unit 110 provided with a horizontal conveyor 111 on the bottom surface of which the waste casting sand made of a lump is introduced; A primary conveyor 120 provided with a primary magnetic separator 121 for separating and discharging the casting masses by magnetic force while being installed to inflow and transport the waste foundry sand flowing into the hopper unit 110; A crusher 130 installed at the end of the primary conveyor 120 and crushing the waste foundry sand fed through the primary conveyor 120; A secondary conveyor 140 provided with a secondary magnetic separator 141 for separating and discharging the casting mass by magnetic force while being installed to inflow and transport the waste foundry sand crushed by the crusher 130; A screen device 150 which is connected to the end of the secondary conveyor 140 and separates a mass of recycled sand supplied through the secondary conveyor 140; A tertiary conveyor 160 that is connected to the screen device 150 and transports a mass of recycled sand that is separated through the screen of the screen device 150 while being connected to the screen device 150, and includes, on the upper surface of the screen device 150 A guide passage part 180 is further provided to guide the reclaimed sand mass conveyed through the secondary conveyor 140 to be evenly supplied to the upper surface of the mesh mesh 151.

The guide passage part 180 of the present invention is provided with a plurality of partition wall plates 181 on the upper surface of the mesh mesh 151 by a fixed support part, and regeneration flowing through the end of the secondary conveyor 140 A plurality of fan-shaped passages 182 are formed so that the sand mass is distributed and supplied to the upper surface of the mesh mesh 151.

The side of the partition plate 181 of the present invention is inclined so as to increase toward the rear, so that the lower surface is spaced apart from the mesh mesh body 151, and the wing plate 183 is installed in a direction perpendicular to the partition plate 181 Is further provided.

The crusher 130 of the present invention includes a hopper-shaped inlet part 131 into which the waste foundry transferred through the primary conveyor 120 flows in, and the waste foundry sand is provided at the lower side of the inlet part 131 to be introduced. A hollow body portion 132 to be pulverized, and an outlet portion 133 through which the waste foundry crushed in the body portion 132 is discharged to the secondary conveyor 140, and in the body portion 132, The drive shaft 134a rotated connected to the drive motor M1 and the driven shaft 134b rotated with a spaced distance d1 to the drive shaft 134a are connected by a chain 134c. The driven shaft 134b is rotated inward to each other, and a first pulverizing unit 134 for pressing and pulverizing the waste foundry sand flowing between them, and the first pulverizing unit 134 installed at the lower side of the first pulverizing unit 134 ), the second driven shaft (135b) is rotated by the chain (134c) with a separation distance (d2) between the first driven shaft (135a) and the first driven shaft (135a) to secondly crush the waste foundry sand crushed in The first driven shaft (135a) and the second driven shaft (135b) is provided with a second pulverization unit 135 for pressing and crushing the waste foundry sand introduced therebetween while rotating inward to each other.

A separation distance (d2) between the first driven shaft (135a) and the second driven shaft (135b) of the present invention is formed to be narrower than the separation distance (d1) between the drive shaft (134a) and the driven shaft (134b).

The body portion 132 of the present invention includes a separation distance d1 between the drive shaft 134a and the driven shaft 134b, and between the first driven shaft 135a and the second driven shaft 135b. A telescopic device 136 is further provided to elastically open and restore the separation distance d2.

The expansion and contraction device 136 of the present invention is installed on the outer surface of the body portion 132 and the chain (134c) is installed, the idle shaft (136a) and the idle shaft (136a) capable of moving back and forth (or rotation) One end is connected to the rear side of the side and the other end is composed of an elastic spring (136b) connected to the body portion (132).

The screen device 150 of the present invention includes a mesh mesh 151 installed to allow a mass of recycled sand of a certain size or less to escape, a vibrator 152 for providing vibration to the mesh mesh 151, and the mesh. Consisting of a support frame 153 for installing the mesh body 151, a fourth conveyor 170 that feeds the unseparated recycled sand mass through the mesh mesh body 151 and feeds it back to the crusher 130 is connected and installed. do.

The waste sorting system according to the present invention introduces the crushed mass of the waste foundry sand into the hopper and transfers it to the primary conveyor, while the casting mass is firstly separated through a primary magnetic separator, and the waste foundry sand from which the cast mass is first separated is shredder. It is further crushed through the crushing machine, but by installing crushing rollers of two pairs of top and bottom in the crusher, the waste foundry sand is crushed first from the top and secondly from the bottom, thereby effectively producing high-quality recycled sand lumps.

In addition, the present invention has the advantage of expanding the range of use of sand by adjusting the size of the waste foundry by adjusting the distance between the upper and lower crushing rollers provided in the crusher.

In addition, the present invention further separates the casting mass with a secondary magnetic separator while transporting the waste foundry sand crushed through a crusher through a secondary conveyor, and secondary through a guide passage through which the recycled sand mass transferred through the secondary conveyor passes by size. It is possible to increase the screen efficiency of the recycled sand mass by supplying it to the screen unit installed at the same height as the end of the conveyor to prevent the recycled sand mass from accumulating on the screen.

In addition, the present invention can further increase the productivity of recycled sand by configuring a route to supply the waste foundry sand that has not been separated from the screen after being pulverized beyond the standard to the crusher again through a conveyor.

1 is a schematic installation state diagram of a waste sorting system according to the present invention,
2 is a schematic plan view of the waste sorting system according to the present invention,
FIG. 3 is a side view of the waste sorting system according to the present invention in which the first waste foundry pulverized material is introduced and supplied to the crusher through a primary conveyor and a primary magnetic separator,
FIG. 4 is a side view showing the production of high-quality sand by supplying a mass of waste foundry sand crushed in a crusher to a screen device through a secondary conveyor and a secondary magnetic separator in the waste sorting system according to the present invention,
5 is a schematic state diagram of a crusher installed in the waste sorting system according to the present invention,
6 is a schematic operational state diagram of the crusher installed in the waste sorting system according to the present invention,
7 is a schematic state diagram in which a guide passage part provided in a screen device installed in a waste sorting system according to the present invention is installed,
8 is a plan view and a side view of FIG. 7,
Figure 9 is a state diagram provided with a wing plate in the partition wall plate of the guide passage portion provided in the screen device installed in the waste sorting system according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them.

Waste sorting system 100 according to the present invention, as shown in Figures 1 to 9,

A hopper unit 110 in which the cast lump and the recycled sand are mixed or integrated and the waste foundry sand is introduced and the horizontal conveyor 111 is provided on the bottom surface;

A primary conveyor equipped with a primary magnetic separator 121 that separates and discharges casting mass (iron powder or iron mass) in the middle portion while being installed to inflow and transport the waste foundry sand flowing into the hopper unit 110 (120);

A crusher 130 installed at the end of the primary conveyor 120 and crushing the waste foundry sand fed through the primary conveyor 120;

A secondary conveyor 140 provided with a secondary magnetic separator 141 for separating and discharging the casting mass by magnetic force while being installed to inflow and transport the waste foundry sand crushed by the crusher 130;

A screen device 150 which is connected to the end of the secondary conveyor 140 and separates a mass of recycled sand supplied through the secondary conveyor 140;

A tertiary conveyor 160 that is connected to the screen device 150 and transports a mass of recycled sand separated from the screen device 150; And

And a fourth conveyor 170 that is connected to the screen device 150 and feeds a lump of recycled sand that is not separated from the screen device 150 and feeds it back to the crusher 130.

In the present invention, from the hopper unit 110 to the secondary conveyor 140 process, after the casting mass is selected in the primary magnetic separator 121, only the reclaimed sand mass may remain, but the casting mass remains in many cases, so'waste casting sand' It is referred to as, and from the second conveyor 140 to the fourth conveyor 170 process, a mass of casting may remain in some parts, but since it is very small, it is referred to as a lump of'recycled sand'.

'Casting lump' is a term referring to a mixture of iron powder and iron lump.

In addition, in the drawing, the fourth conveyor 170 is not shown to be connected to the crusher 130, but is provided to transport the reclaimed sand mass to the crusher 130.

In general, in order to recycle the waste foundry sand in which the foundry lumps are mixed or integrated into the waste sand, a system is required that efficiently separates the foundry lumps and sand lumps, and pulverizes and separates the separated recycled sand lumps to the size required for regeneration.

In the present invention, the waste foundry sand lump is an integral or mixed form of molten iron and sand in the casting manufacturing process.It is necessary to separate the cast lump made of iron, crush the sand to be reused into a usable size, and separate it into a size required for regeneration. There is. The waste foundry sand or the waste foundry sand lump refers to the one in which the cast sand is integrally formed or mixed, and the one from which the cast sand is removed from the waste foundry sand is referred to as recycled sand or recycled sand lump.

In the waste sorting system 100 of the present invention configured as described above, the demolished waste foundry is transported by a separate transport device and supplied to the hopper unit 110.

The lumped waste foundry supplied to the hopper unit 110 is transported by the horizontal conveyor 111 provided under the hopper unit 110 and supplied to the first conveyor 120 and the first conveyor 120 ), the waste casting sand transferred through the primary conveyor 120 passes through the primary magnetic separator 121 installed in the primary conveyor 120, while the casting mass is firstly separated and discharged.

The primary magnetic separator 121 and the secondary magnetic separator 141 are generally sorted by sticking to the magnetic force, and are devices for separating and transporting the casting mass in a place where magnetic force does not exist. Since it is a device, a detailed description of the configuration is omitted.

The primary conveyor 120 is installed at one end connected to the lower portion of the hopper unit 110 to be low and the other end to be installed to be inclined.

The other end of the primary conveyor 120 is provided with a crusher 130 for introducing and pulverizing waste foundry sand, which is a mass transferred through the primary conveyor 120, into small chunks.

Therefore, the casting mass mixed with the waste sand in the primary magnetic separator 121 is selected for the waste casting sand transported through the primary conveyor 120, and the casting mass integrated with the waste sand cannot be selected and the crusher 130 It is crushed into small lumps and separated into casting lumps and recycled sand lumps.

Here, the primary magnetic separator 121 may be further provided with a primary dust collector 122 that collects dust or fine dust generated while the castings are sorted.

Accordingly, dust or fine dust generated by the primary magnetic separator 121 while the casting masses are sorted and processed is collected through the primary dust collector 122.

In addition, a crushing dust collector 130a for collecting dust or fine dust generated while the waste foundry is pulverized may be installed in the crusher 130.

The primary dust collector 122 and the crushed dust collector 130a are configured to be installed by a general known technique, and detailed descriptions thereof will be omitted.

The crusher 130 of the present invention includes a hopper-shaped inlet part 131 into which the waste foundry transferred through the primary conveyor 120 flows in, and the waste foundry sand is provided at the lower side of the inlet part 131 to be introduced. A hollow body portion 132 to be pulverized, and an outlet portion 133 through which the waste foundry crushed in the body portion 132 is discharged to the secondary conveyor 140,

Inside the body portion 132,

The drive shaft 134a rotated connected to the drive motor M1 and the driven shaft 134b rotated with a spaced distance d1 to the drive shaft 134a are connected by a chain 134c. The driven shaft (134b) is rotated inward to each other and the primary pulverization unit 134 for pressing and pulverizing the waste casting sand (P) flowing between them,

A first driven shaft (135a) and the first driven shaft (135a) installed on the lower side of the first pulverizing part 134 and to secondarily crush the waste foundry sand (P) pulverized in the first pulverizing part 134 The second driven shaft (135b) is connected to be rotated by the chain (134c) with a separation distance (d2) at, and the first driven shaft (135a) and the second driven shaft (135b) rotate inward to each other. A secondary pulverization unit 135 is provided for pressing and pulverizing the waste casting sand P flowing between them.

Therefore, waste casting sand P passes between the drive shaft 134a and the driven shaft 134b of the primary pulverization unit 134 and is pulverized firstly, and the first driven shaft of the secondary pulverization unit 135 As the waste foundry sand P passes between 135a and the second driven shaft 135b, the waste foundry sand P is secondarily crushed, thereby improving the crushing efficiency of the waste foundry sand P.

As the waste casting sand P passes through the first pulverization part 134 and the second pulverization part 135 and is pulverized, most of the cast mass can be separated.

Here, a separation distance (d2) between the first driven shaft (135a) and the second driven shaft (135b) is formed to be narrower than the separation distance (d1) between the drive shaft (134a) and the driven shaft (134b).

In addition, the crusher 130 of the present invention is provided with a plurality of crushing protrusions 134d in the longitudinal direction on the outer circumferential surfaces of the body of the drive shaft 134a and the driven shaft 134b, respectively, at regular intervals along the circumferential surface.

In addition, a plurality of auxiliary crushing protrusions 135d in the longitudinal direction are formed on the outer circumferential surfaces of the body of the first driven shaft 135a and the second driven shaft 135b at regular intervals along the circumferential surface.

Therefore, the waste casting sand P may be crushed more effectively by the crushing protrusions 134d and the auxiliary crushing protrusions 135d while passing through the first pulverizing part 134 and the second crushing part 135, respectively.

When an excessively hard cast mass, etc., flows into the body portion 132 of the crusher 130 of the present invention, the drive shaft 134a, the driven shaft 134b, the first driven shaft 135a, and the first 2 The driven shaft 135b may be damaged.

Accordingly, the body portion 132 of the present invention has a separation distance d1 between the drive shaft 134a and the driven shaft 134b, and between the first driven shaft 135a and the second driven shaft 135b. A telescopic device 136 may be further provided to elastically open and restore the separation distance d2 of the.

The expansion and contraction device 136 is installed on the outer surface of the body 132 and the chain 134c is installed to move back and forth (or rotate), the idle shaft 136a and the rear side of the idle shaft 136a One end is connected to and the other end is composed of an elastic spring (136b) connected to the body portion (132).

Therefore, when the idling shaft (136a) is moved (rotated) in one direction by an external force, the elastic spring (136b) is elongated, and when the external force is removed thereafter, the idling shaft (136a) is originally caused by the elastic restoring force of the elastic spring (136b). Is returned to the position of.

Here, a single chain 134c is connected to the drive shaft 134a and the driven shaft 134b, the first driven shaft 135a, the second driven shaft 135b, and the idle shaft 136a. Each sprocket wheel is provided as possible.

In addition, the driving motor M1 is connected to the driving shaft 134a by a driving chain 137.

Therefore, when the driving motor M1 is driven, the driving shaft 134a is rotated by the driving chain 137, and the chain 134c is rotated by the rotation of the driving shaft 134a. The first driven shaft (136a), the second driven shaft (135b), and the idle shaft (136a) can be rotated at the same time.

The present invention is installed so that the driven shaft (134b) and the second driven shaft (135b) are elastically opened by the stretching operation of the idle shaft (136a) constituting the stretching device (136), but the distance between them is A stopper 138 consisting of a rod and a screw is further provided for adjustment.

The crusher 130 configured as described above is between the driving shaft 134a of the primary pulverizing unit 134 and the driven shaft 135b or the first driven shaft 135a of the secondary pulverizing unit 135 When a rigid body is introduced between the and the second driven shaft 135b, the driven shaft 134b and the second driven shaft 135b are elastically pushed, so that the separation distances d1 and d2 are further widened and the rigid body is removed. After going out, the separation distances d1 and d2 are narrowed as they were due to the restoring force of the elastic spring 1136b.

Accordingly, the first pulverization unit 134 and the second pulverization unit 135 are prevented from being damaged by an incoming large cast mass, etc., thereby improving the durability of the crusher 130.

On the other hand, the secondary conveyor 140 inflows and transports the waste castings and the castings separated while being crushed in the crusher 130, and the castings are separated and discharged through the secondary magnetic separator 141 installed in the middle thereof. As such, only the reclaimed sand mass is supplied to the next process through the secondary conveyor 140.

A secondary dust collector 141a may be installed in the secondary magnetic separator 141 as well. Accordingly, dust or fine dust generated by the secondary magnetic separator 141 is subjected to a dust collection process through the secondary dust collector 141a. Since the secondary dust collector 141a is also installed by a known technology, a detailed description will be omitted.

The secondary conveyor 140 is installed to be inclined with one end connected to the crusher 130 lowered in height and the other end higher.

In addition, at the end of the secondary conveyor 140, the reclaimed sand mass transferred while the casting mass is separated through the secondary conveyor 140 is accommodated to separate the reclaimable size lumps and the difficult size lumps. A screen device 150 is installed.

As the screen device 150 rotates, a mesh mesh body 151 installed to allow a mass of recycled sand of a certain size or less to escape, and a mesh mesh body 151 installed in the mesh mesh body 151 to vibrate so that the flow of recycled sand mass flows out well. It consists of a vibrator 152 provided and a support frame 153 for installing the mesh mesh 151.

A screen dust collector (not shown) for collecting and discharging dust or fine dust may be further installed in the screen device 150.

Accordingly, the regenerated sand mass transported through the secondary conveyor 140 and introduced therein is separated and discharged into a regenerated sand mass of a predetermined size or less and a regenerated sand mass of a predetermined size or more while passing through the mesh mesh body 151.

Here, the height of the screen device 150 of the present invention is installed equal to the height of the end of the secondary conveyor 140.

Therefore, a mass of recycled sand supplied while being transported to the end of the secondary conveyor 140 is pushed into the mesh mesh 151 of the screen apparatus 150, and a mass of recycled sand of a certain size or less is transferred to the lower portion of the screen apparatus 150. Separately discharged.

When the end of the secondary conveyor 140 is installed higher than the screen device 150, a phenomenon in which incoming regenerated sand lumps fall and accumulate on the mesh mesh body 151 is caused, thereby causing regeneration sand lumps of a certain size or less. There may be a problem that the productivity of recycled sand is considerably lowered because there are cases where it cannot be separated and discharged. In this case, a mass of recycled sand is accumulated in the screen apparatus 150 under the end of the secondary conveyor 140, like the gate of a grave, so that the mass of recycled sand at the top passes through the screen apparatus 150 even if the size is smaller than the mesh hammer 151. It becomes impossible to do it.

In the present invention, as described above, since the height of the screen device 150 and the height of the end of the secondary conveyor 140 are equally installed, a mass of recycled sand flowing through the secondary conveyor 140 is Since the phenomenon of being accumulated on the mesh mesh 151 does not occur, the productivity of the aggregate by the screen device 150 is improved.

The screen device 150 is connected to the tertiary conveyor 160 to receive and transport a mass of recycled sand flowing downward through the mesh mesh 151.

A guide device (not shown) is installed on the lower side of the mesh mesh body 151 of the present invention to collect a mass of recycled sand exiting through the mesh mesh body 151 and guide it into the tertiary conveyor 160.

Accordingly, the regenerated sand mass separated through the mesh mesh 151 of the screen device 150 is separated and transported to the tertiary conveyor 160 to be produced as an aggregate required for regeneration.

In addition, the size of the regenerated sand mass transferred through the secondary conveyor 140 is large, so that the regenerated sand mass that is not separated through the mesh mesh body 151 of the screen device 150 is disposed on the rear surface of the screen device 150. The regenerated sand mass transported through the fourth conveyor 170 and transported through the fourth conveyor 170 is re-supplied to the crusher 130 to be crushed and resupplied to the secondary conveyor 140 To achieve the cycle. If the recycled sand lump is large, it may contain casting lumps, and an additional pulverization process is required when recycling the recycled sand, thus reducing the lump of recycled sand through the circulation process and increasing the efficiency of sorting the casting lumps.

On the other hand, a guide passage part 180 is provided on the upper surface of the screen device 150 to guide the reclaimed sand mass transferred through the secondary conveyor 140 to be evenly supplied to the upper surface of the mesh mesh body 151 Has been.

The guide passage part 180 prevents a mass of regenerated sand flowing through the secondary conveyor 140 from concentrating on the upper central portion of the mesh mesh body 151 and is evenly distributed on the upper surface of the mesh mesh body 151 By allowing it to flow in while spreading, the regenerated sand mass is evenly passed through the mesh mesh body 151 to increase the productivity of the aggregate.

The guide passage part 180 is installed on the upper surface of the mesh mesh 151 by a fixed support part, and has a fan shape from the end of the secondary conveyor 140 toward the upper surface of the mesh mesh body 151 It consists of a plurality of passages 182 formed by a plurality of partition wall plates 181 provided as.

The partition plate 181 is vertically installed on the upper surface of the mesh mesh 151, and the center partition plate 181a installed on the central side is provided longest from the end of the secondary conveyor 140, and is provided to the left and right. It is equipped to become shorter and shorter.

For this reason, among the plurality of passages 182, the passages formed on both sides of the center partition plate 181a at the center portion are formed to be longest and become shorter toward both sides of the passages 182.

Therefore, the regenerated sand mass flowing through the secondary conveyor 140 passes through the plurality of passages 182 forming the guide passage part 180 and is distributed and guided in a fan shape to the upper surface of the mesh mesh body 151 By being evenly supplied to the entire center portion and both edge portions, the regenerated sand mass can be effectively removed from the mesh mesh body 151 and separated. This dramatically improves the productivity of the recycled aggregate.

In addition, vibration is provided to the mesh mesh 151 by the vibrator 152, so that the separation efficiency of the recycled sand mass may be doubled.

In addition, a plate-shaped wing plate 183 may be further provided at a side portion of the partition wall plate 181 to be inclined to increase as it goes to the rear. The wing plate 183 is installed so that the partition wall plate 181 and the installation direction are vertical. The lower surface of the wing plate 183 is spaced apart from the mesh hammer 151 and installed high.

While the partition wall plate 181 serves as a guide for moving the reclaimed sand mass, the wing plate 183 induces the fall of the regenerated sand mass in the process of moving. At this time, the falling position may be close to the end of the secondary conveyor 140 or may be the end of the wing plate 183. The wing plate 183 may be installed in the entire length of the partition wall plate 181, but it is preferable that the wing plate 183 is installed only in part.

The wing plate 183 is provided only in a portion of the passage 182 so that a mass of recycled sand flowing into the passage 182 moves obliquely upward while riding the wing plate 183, and the mesh mesh 151 at the end thereof It is to increase separation efficiency by accelerating the movement of the regenerated sand mass by giving vibration due to the fall while falling into the water.

As described above, the screen device 150 of the present invention evenly supplies the regenerated sand mass flowing through the secondary conveyor 140 to the mesh mesh 151 through the guide passage part 180 to be required for regeneration. The regenerated sand of the size is efficiently separated and produced, and the large regenerated sand mass that is not separated from the mesh mesh 151 is fed back to the crusher 130 to resupply, thereby improving the productivity of reusable aggregates. .

As described above, in the waste sorting system according to the present invention, the crushed mass of the waste foundry is introduced into the hopper and transferred to the primary conveyor, while the casting mass is firstly separated through the primary magnetic separator in the middle, and the casting mass is first separated. The waste foundry sand is further crushed through a crusher, but by installing two pairs of crushing rollers at the top and bottom, the waste foundry sand can be crushed first from the top and secondly from the bottom, thereby effectively producing high-quality recycled sand lumps.

100: waste sorting system
110: hopper part 111: horizontal conveyor
120:1 primary conveyor
121: 1st magnetic separator 122: 1st dust collector
130: crusher 130a: crusher dust collector
131: inlet 132: body 133: outlet 134: 1 primary pulverization part
134a: drive shaft 134b: driven shaft 134c: chain 134d: crushing protrusion
135: secondary crushing part 135a: first driven shaft 135b: second driven shaft 135d: auxiliary crushing protrusion
136: extension device 136a: idle shaft 136b: elastic spring 137: drive chain
138: stopper
140: Secondary conveyor 141: Secondary magnetic separator 141a: Secondary dust collector
150: screen device
151: mesh mesh 152: vibrator 153: support frame
160: 3rd conveyor 170: 4th conveyor
180: guide passage
181: bulkhead plate 181a: center bulkhead plate 182: passage 183: wing plate

Claims (8)

A hopper unit 110 having a horizontal conveyor 111 provided on a bottom surface of the waste casting sand made of a lump;
A primary conveyor 120 provided with a primary magnetic separator 121 for separating and discharging the casting masses by magnetic force while being installed to inflow and transport the waste foundry sand flowing into the hopper unit 110;
A crusher 130 which is installed at the end of the primary conveyor 120 and pulverizes the waste foundry sand transferred and supplied through the primary conveyor 120;
A secondary conveyor 140 provided with a secondary magnetic separator 141 for separating and discharging the casting mass by magnetic force while being installed to inflow and transport the waste foundry sand crushed by the crusher 130;
A mesh mesh body 151 that is connected to the end of the secondary conveyor 140 and installed so that a mass of recycled sand of a certain size or less can escape to separate a mass of recycled sand that is transported and supplied through the secondary conveyor 140. ), and a screen device 150 including a vibrator 152 for providing vibration to the mesh mesh 151;
Including; a tertiary conveyor 160 that is connected to the screen device 150 and transports a mass of recycled sand that is separated from the screen device 150 while being connected to the screen device 150,
A guide passage part 180 is provided on the upper surface of the screen device 150 to guide the regenerated sand mass conveyed through the secondary conveyor 140 to be evenly supplied to the upper surface of the mesh mesh body 151;
The guide passage part 180 is provided with a plurality of partition wall plates 181 on the upper surface of the mesh mesh 151 by a fixed support part, so that a mass of recycled sand flowing through the end of the secondary conveyor 140 is A plurality of fan-shaped passages 182 are formed to be distributed and supplied to the upper surface of the mesh mesh 151;
The side portion of the partition plate 181 is further provided with a wing plate 183 that is inclined so as to increase toward the rear so that the lower surface is spaced apart from the mesh mesh 151 and installed in a direction perpendicular to the partition plate 181 Waste sorting system.
delete delete The method of claim 1,
The crusher 130 includes a hopper-shaped inlet part 131 into which the waste foundry sand conveyed through the primary conveyor 120 flows into, and a hollow part provided at a lower side of the inlet part 131 to crush the incoming waste foundry sand. A body portion 132 of, and an outlet portion 133 through which the waste foundry crushed in the body portion 132 is discharged to the secondary conveyor 140,
Inside the body portion 132,
The drive shaft 134a rotated connected to the drive motor M1 and the driven shaft 134b rotated with a spaced distance d1 to the drive shaft 134a are connected by a chain 134c. The driven shaft (134b) is rotated inward to each other and the primary pulverization unit 134 for pressing and pulverizing the waste foundry sand flowing between them,
A separation distance between the first driven shaft (135a) and the first driven shaft (135a) so as to secondly crush the waste foundry sand that is installed on the lower side of the first pulverizing part 134 and pulverized in the first pulverizing part 134 With (d2), the second driven shaft (135b) is connected to be rotated by the chain (134c), and the first driven shaft (135a) and the second driven shaft (135b) are rotated inward to each other and between them. A waste sorting system provided with a secondary pulverizing unit 135 for pressing and pulverizing the incoming waste foundry sand.
The method of claim 4,
The separation distance (d2) between the first driven shaft (135a) and the second driven shaft (135b) is formed to be narrower than the separation distance (d1) between the drive shaft (134a) and the driven shaft (134b).
The method of claim 4,
The body portion 132 has a separation distance (d1) between the drive shaft (134a) and the driven shaft (134b), and a separation distance between the first driven shaft (135a) and the second driven shaft (135b) ( d2) A waste sorting system further provided with a telescopic device 136 to elastically open and restore.
The method of claim 6,
The expansion and contraction device 136 is installed on the outer surface of the body 132 and the chain 134c is installed to move back and forth (or rotate), the idling shaft 136a and the rear side of the idling shaft 136a Waste sorting system consisting of an elastic spring (136b) connected to one end and the other end to the body portion (132).
The method of claim 1,
The screen device 150 is a waste sorting system in which a fourth conveyor 170 for feeding unseparated reclaimed sand mass through the mesh mesh 151 and feeding back to the crusher 130 is connected and installed.

Images