JP5241815B2 - Wet specific gravity sorter - Google Patents

Description

  The present invention relates to a wet specific gravity sorting device, specifically, a light specific gravity product and a heavy specific gravity material are mixed with a light specific gravity and a heavy specific gravity due to a difference in specific gravity while conveying the object to be sorted, which contains a mixture of light specific gravity and heavy specific gravity, along the transport surface of a sorting trough The present invention relates to a wet specific gravity sorting apparatus.

  For example, a composite waste material crushed material (a material to be sorted) obtained by shredding a used radiator is a waste that can be recycled as a mixture of many different materials. When separating composite waste crushed materials into raw materials and diverting them to resources, separation and recovery of magnetic materials such as iron using a magnetic separator first, and separation of non-conductors such as plastic and wood using an eddy current separator Recovery is performed. Thereafter, the remaining thick plate-shaped aluminum piece and the copper pipe piece deformed into a thin plate shape are selected.

There is a specific gravity difference between aluminum and copper. Therefore, it is conceivable to use this to wet-sort aluminum pieces and copper pipe pieces. As conventional wet specific gravity sorting apparatuses, for example, the following two are known (Patent Document 1 and Patent Document 2).
In Patent Document 1, a weir made of a non-perforated plate that can only get over a granular light specific gravity material is provided at the downstream portion of the sorting trough inclined in the vertical direction, and water is supplied from the shower means to substantially the entire transport surface of the sorting trough. In the low-speed water flow obtained by jetting, the sorting trough is constantly vibrated obliquely upward, so that the granular specific gravity captured by the weir is gradually auctioned and discharged from the upper end of the sorting trough. This is a sorting type particle sorting apparatus.

  Patent Document 2 has this granule sorting apparatus as a basic configuration, and a receiving tank is provided downstream of the sorting trough, and the sediment in the tank is conveyed to a second sorting table via a communication passage, and a single-blade shaped wire scrap. It is a copper recovery device of the wire scrap which re-sorts.

Japanese Patent Publication No. 8-29265 JP 2007-136427 A

  However, since the object to be sorted is a granule in the grain sorting device of Patent Document 1 and the wire scrap copper recovery device of Patent Document 2, the amount of water required for wet sorting is about the level of spraying from the shower means. Met. Therefore, these apparatus configurations are also suitable for wet sorting using a small amount of water, for example, the weir is simply a non-porous plate. As a result, if the water is flowed at such a rate that the aluminum pieces, which are light specific gravity, of the used radiator shredded crushed material in the sorting trough, the water will violently collide with the weir at the lower end of the sorting trough. Not only the specific gravity aluminum piece but also the heavy specific gravity copper pipe piece might jump over the weir. As a result, there is a possibility that the sorting accuracy of the light specific gravity material is lowered and the recovery rate of both pieces is also lowered.

In particular, in the case of the sorting apparatus of Patent Document 2, it was not possible to treat the sediment in the tank having a size that causes clogging in the communication passage, such as aluminum pieces and copper pipe pieces.
As another conventional technology, another type of wet specific gravity sorter has been developed that expects the heavy specific gravity and light specific gravity to be switched up and down due to the pulsation of water in the vertical direction. If the size is increased up to one size, it is difficult to switch the heavy specific gravity and light specific gravity up and down with the up and down movement of water with pulsation.

  Therefore, as a result of earnest research, the inventor pushed the amount of water flowing on the conveying surface of the sorting trough, the plate-like light specific gravity material pushed down downstream, and the plate piece-like heavy specific gravity material obliquely upward of the sorting trough. Adjust the amount of water that competes on the transfer surface by vibration, and form a plurality of water holes in the sorting weir that is inclined so that the upper part is close to the upstream part of the transfer surface with reference to the surface orthogonal to the transfer surface When configured, it was found that all the above-mentioned problems were solved, and the present invention was completed.

  The present invention is capable of separating the specific gravity of a plate-like light specific gravity product and a plate piece-like heavy specific gravity in water in a short time and with high accuracy, and thereby, It aims at providing the wet specific gravity sorter which can raise the recovery rate with heavy specific gravity thing.

According to the first aspect of the present invention, a light specific gravity object and an object to be sorted in which heavy specific gravity substances are mixed are placed on a conveying surface inclined up and down, and a light specific gravity material discharge port is formed at a lower end portion. And a sorting trough having a heavy gravity discharge port formed at the upper end, and a water flow generating means for constantly supplying water to the upper part of the sorting trough and generating a downward water flow along the conveying surface; Oscillating the sorting trough obliquely upward, and oscillating means for gradually advancing the heavy specific gravity on the transport surface in the water supplied from the water flow generating means, and the auctioning by the oscillating means Shower means having jet nozzles for jetting water toward heavy specific gravity, stirring and washing the heavy specific gravity, and the sorting at the lower end of the sorting trough upstream of the light specific gravity discharge port Provided across the entire length of the trough The light specific gravity is caused to overflow with water by utilizing a specific gravity difference, and the heavy specific gravity material is damped, and the selection weir includes a plurality of passages penetrating the upstream surface and the downstream surface. The sorting weir is a wet specific gravity sorting device having a water hole formed therein and inclined so that an upper portion thereof is close to an upstream portion of the transport surface with respect to a surface orthogonal to the transport surface. The lower part is a wet specific gravity sorter having a larger inclination angle in the direction closer to the upstream part of the transport surface than the upper part of the sorting weir .

  According to the first aspect of the present invention, water is constantly supplied from the water flow generating means toward the upper portion of the sorting trough during operation of the apparatus. The amount of water at this time is an amount that can be easily swept away if it is a plate-like light specific gravity material, but difficult to push away if it is a plate-like heavy specific gravity material. The object to be sorted dropped on the conveying surface is pushed toward the lower end of the sorting trough by the pressure of this water.

At that time, the objects to be sorted in the water flow are gradually divided into layers so that the light specific gravity becomes the upper layer and the heavy specific gravity becomes the lower layer due to the specific gravity difference. At this time, the heavy specific gravity sedimented on the conveying surface is gradually auctioned with the vibration of the sorting trough obliquely upward by the vibration means, and finally discharged from the heavy specific gravity discharge port at the upper end of the sorting trough. For example, it is recovered as a resource.
At this time, water is jetted from the jet nozzle toward the heavy specific gravity being moved (auctioned), and the heavy specific gravity is agitated while being washed. As a result, the specific gravity selection between the light specific gravity and the heavy specific gravity is partially promoted in the moving heavy specific gravity. That is, the light specific gravity that has been hidden between the heavy specific gravity materials is moved to the upper layer side by the stirring action by the water jet, and then the light specific gravity materials are pushed toward the lower end of the sorting trough by the water flow.

On the other hand, the light specific gravity including those moved to the upper layer overflows the sorting weir with the water near the water surface at the lower end of the sorting trough. At this time, part of the water reaching the sorting weir passes through each water passage hole. In addition, the water that collided with the sorting weir is inclined so that the sorting weir is close to the upstream part of the transport surface, so that the water flows into the lower part of the water storage area that appears upstream of the sorting weir. Turbulent flow occurs, and the specific gravity sorting of the objects to be sorted is promoted. Moreover, the heavy specific gravity that collides with the sorting weir settles sequentially and is placed on the transport surface.
Accordingly, the plate-like light specific gravity and the plate-like heavy specific gravity can be subjected to wet specific gravity selection in a short time and with high accuracy. As a result, the recovery rate of each plate-like light specific gravity and heavy specific gravity can be increased.

  In the conventional method, the object to be sorted is a granule or powder that is lighter than the plate piece. Therefore, the amount of flowing water in the sorting trough is small, and a water storage area that performs specific gravity sorting is formed upstream of the weir at the lower end of the sorting trough. It becomes the composition which is done. On the other hand, in the present invention, since a larger amount of water is supplied from the water flow generating means than in the conventional method, even if a part of the water passes through the sorting weir through the water passage hole, it is upstream of the sorting weir. On the side, there is always a water storage area for specific gravity sorting. From this point of view, wet specific gravity sorting of plate-shaped objects larger than granules and powders is superior to conventional devices. Easy to understand.

As the objects to be sorted, for example, various composite waste material crushed materials, specifically household appliance crushed materials, automobile crushed materials, etc., more specifically, used radiator shredder crushed materials and the like can be adopted.
The material, weight, and specific gravity of the light specific gravity and heavy specific gravity are arbitrary. However, the specific gravity of the heavy specific gravity must naturally be greater than that of the light specific gravity. Moreover, the suitable to-be-sorted object (light specific gravity thing and heavy specific gravity thing) sorted by the wet specific gravity sorting apparatus of this invention is a board piece of length 5-150mm, width 3-30mm, and thickness 0.3-15mm. And the weight is 0.01-70g.

The sorting trough is a bowl-shaped member (chute material) having a conveying surface inclined in the length direction up and down.
Steel, stainless steel, aluminum or the like can be used as the material for the sorting trough. The inclination angle of the transport surface with respect to the horizontal plane of the sorting trough is, for example, 6 ° to 10 °. Further, both ends of the sorting trough in the length direction may be covered with end plates. The sorting trough is generally mounted on a device rack. The device mount may be provided with angle adjusting means for adjusting the inclination angle of the sorting trough.

The formation position of the light gravity outlet at the lower end of the sorting trough and the formation position of the heavy gravity discharge at the upper end of the sorting trough are arbitrary. The shapes of the light specific gravity discharge port and the heavy specific gravity discharge port are also arbitrary. For example, in addition to a circle and an ellipse, a polygon such as a triangle and a rectangle may be used.
The flat upper surface of the sorting trough is a conveying surface for the object to be sorted. For example, when the roughened surface of the transport surface is roughened or the frictional force against the object to be sorted is increased by laying a rubber mat, the vibrating trough vibrates diagonally upward. The objects to be sorted (mainly heavy specific gravity) on the conveying surface can be auctioned with a certain and large pitch (flying distance).

As a water flow generation means, the structure is arbitrary as long as it can generate the flow of the water which goes below along a conveyance surface. For example, it is possible to employ a hose in which one end portion is directly communicated with a water tap. In addition, what has the water storage tank and the nozzle for water supply by which the one end part was connected via the pump to the drain outlet of this water storage tank may be used.
As water, for example, tap water, industrial water, stored water in a water tank, and the like can be used.
As the vibration means, for example, a mechanical vibrator using a cam or an electric vibrator fixed to the bottom surface or side surface of the sorting trough can be employed.

As a shower means, what can inject water from the front-end | tip of an injection nozzle by the water quantity and water pressure which can be stirred with respect to the heavy specific gravity object on a conveyance surface is employable.
The number of spray nozzles used may be one or two or more.
The distance from the nozzle opening of the injection nozzle to the heavy specific gravity object (sorted object) on the transport surface is 200 mm or less. Within this range, it becomes easy to control the contact pressure (water pressure) when the spray water comes into contact with the object to be sorted and the spray shape (fan shape, etc.) of the spray water. Compared to the above, it is possible to wash and agitate a plate-like piece of heavy specific gravity (a material to be sorted) that is large and heavy without trouble.

Various materials such as stainless steel and brass can be adopted as the material for the sorting weir. In addition, various synthetic resins may be used.
As the sorting weir, for example, a wire net, punching metal, expanded metal, cross punch metal, or the like can be employed.
As the shape of the water passage hole, for example, a circle, an ellipse, a polygon more than a triangle or the like can be adopted. The hole size of the water passage hole must be a size that does not allow the light specific gravity and heavy specific gravity to pass through.
The number of formed water holes is arbitrary as long as it is two or more. The water passage hole may be formed in the whole area of the sorting weir or a part thereof.

The inclination angle of the sorting weir is more than 0 ° and not more than 45 ° with respect to the surface orthogonal to the transport surface. At 0 ° or less (including the case of the same angle (0 °) as the reference plane orthogonal to the conveyance surface and the case where it is inclined so as to approach the downstream portion of the conveyance surface), the water flow is larger than the conventional one. Not only light specific gravity but also heavy specific gravity will jump over the sorting weir. Moreover, if it exceeds 45 degrees, a water storage area will become unnecessarily long and a selection trough will become excessively long. A preferable inclination angle of the sorting weir is 20 ° to 35 °. Within this range, it is easy to move the heavy specific gravity and light specific gravity in the water storage area, and the specific gravity selection can be performed in a shorter time.
“Providing a sorting weir over the entire length of the sorting trough in the width direction” means a state where there is no portion where the sorting weir is cut over the entire length of the sorting trough in the width direction. Thereby, specific gravity sorting using the sorting weir can be performed for all the objects to be sorted that have reached the lower end of the sorting trough.
“The upper part of the sorting weir is inclined so as to be close to the upstream part of the transport surface with respect to the surface orthogonal to the transport surface” extending in the width direction of the transport surface and intersecting the transport surface at 90 °. The virtual plane is a reference plane, and at least the upper part of the sorting weir including the entire sorting weir is inclined upstream from the reference plane.

In addition, the lower portion of the sorting weir is configured to have a larger inclination angle in the direction closer to the upstream portion of the transport surface than the upper portion of the sorting weir.
Thereby, on the upstream side of the sorting weir, the flow of large water generated by the upper part of the sorting weir and the flow of small water generated by the lower part of the sorting weir coexist, Overflow of light specific gravity is promoted, and sedimentation of heavy specific gravity is promoted by the flow of water below the sorting weir.
In addition, if the inclination angle of the lower part of the sorting weir is increased, the sorting weir will be bent more into a square shape, and it is difficult to discharge the sorting object flowing between the transport surface and the lower part of the sorting weir. However, since the sorting trough constantly vibrates obliquely upward by the vibration means, even a sorting object entering such a narrow narrow space can be easily discharged from this space.

  The angle at which the lower part of the sorting weir inclines in the direction approaching the upstream part of the transport surface is 10 ° or more larger than the inclination angle of the upper part of the sorting weir. If it is less than 10 °, there is no great difference from the case where the inclination angle is not increased. Moreover, the inclination angle of the lower part of the sorting weir is less than 75 °. If it exceeds 75 °, there is no big difference from the case where the inclination angle is not increased.

The invention according to claim 2 is characterized in that the water flow generating means is disposed at an upper part of the sorting trough, and overflows water over the entire width direction of the transport surface, and water overflowed from the water tank. The wet specific gravity sorting apparatus according to claim 1, further comprising a uniform flow path for draining at a uniform flow rate over the entire width direction of the transport surface.

According to the invention described in claim 2 , the water overflowed over the entire width direction of the conveying surface of the water tank has a uniform flow rate over the entire width direction of the conveying surface by passing through the uniform flow path, and thereafter , Supplied to the sorting trough. Thereby, the water in the sorting trough generated by the water flow generating means can be made to flow with a uniform amount of water over the entire width direction of the conveying surface of the sorting trough.

As the shape of the water tank in plan view, for example, a rectangular shape that is long in the width direction of the transport surface can be adopted. The water tank may be a container having an open top surface or a tank having a sealed top surface. In any case, water such as tap water can be always introduced into the tank.
For example, as a configuration for overflowing water from the water tank over the entire width direction of the transport surface, for example, the height of the wall plate (downstream side plate or upstream side plate) on the water overflow side of the water tank Further, it is possible to adopt a configuration that makes the entire length uniform.
In addition, the uniform flow path means that the wall plate on the side where water overflows is the inner wall of the uniform flow path, the flow restriction plate that is spaced in parallel from the outer surface of the inner wall and has the same length as the inner wall is used as the outer wall. It is an elongate water channel formed between. The uniform flow path has a uniform flow path width over its entire length.

According to a third aspect of the present invention, the sorting trough is provided with a partition plate that divides a portion between the water flow generating means and the sorting weir in the conveying surface into a plurality of width directions of the conveying surface. The wet specific gravity sorting apparatus according to claim 1 or claim 2 .

According to the third aspect of the present invention, since the region from the water flow generating means to the sorting weir is divided into a plurality in the width direction of the transfer surface by the partition plate, the water flow generating means generates The water stream thus divided is divided into a plurality in the width direction of the transport surface. As a result, the water flowing through the sorting trough is partially cut off in the width direction of the transport surface due to uneven distribution of the objects to be sorted on the transport surface in the width direction of the transport surface. It is possible to prevent a problem from occurring in the stirring of the object.

The width of one partial conveyance surface obtained by dividing the conveyance surface with a partition plate is, for example, 10 to 25 cm. If the distance is less than 10 cm, the objects to be sorted out compete with each other to cause sorting problems. Moreover, if it exceeds 25 cm, the water which flows in the selection trough will be partially cut | disconnected by the width direction of a conveyance surface, and it will interfere with stirring of a to-be-sorted object.
One or two or more partition plates may be used.

  According to the first aspect of the present invention, the object to be sorted supplied on the conveying surface by the action of the water flow generated when water is supplied from the water flow generating means to the sorting trough is subjected to specific gravity sorting while the lower end of the sorting trough. It is washed away to the part. At the lower end of the sorting trough, the light specific gravity overflows the sorting weir together with the water near the water surface and is finally recovered from the light specific gravity discharge port. On the other hand, heavy specific gravity is dammed by the sorting weir, and a part of the water passes through the water passage hole, but the remaining water collides with the sorting weir inclined so as to be close to the upstream part of the transport surface, In the reservoir area that appears near the upstream side, it sinks downward and becomes turbulent, which accelerates the specific gravity sorting of the material to be sorted, and the heavy specific gravity material that collides with the sorting weir settles sequentially and is placed on the transport surface. Placed.

Thereafter, the heavy specific gravity material on the transport surface is gradually auctioned toward the upper end portion of the sorting trough by the vibration of the sorting trough obliquely upward by the vibrating means, and finally recovered from the heavy specific gravity discharge port. .
Thereby, the wet specific gravity selection can be performed in a short time and with high accuracy between the plate-like light specific gravity and the plate-like heavy specific gravity. As a result, the recovery rate of the light specific gravity and heavy specific gravity of each plate-like piece can be increased.

In addition, the lower part of the sorting weir has a larger inclination angle in the direction closer to the upstream part of the transport surface than the upper part of the sorting weir. The sedimentation of heavy specific gravity is promoted by the flow of water below the sorting weir.

Further, according to the invention described in claim 2, since the water overflowed over the entire width direction of the conveying surface of the water tank is configured to pass through the uniform flow path, the water flow generated by the water flow generating means is selected. The amount of water can be made uniform over the entire width direction of the trough conveying surface. Thereby, the to-be-sorted object can be subjected to wet specific gravity sorting by effectively using the entire transport surface.

Furthermore, according to the invention described in claim 3, since the region from the water flow generating means to the sorting weir is divided by the partition plate in the transport surface, the water flow generated by the water flow generating means is It can be divided into a plurality of parts in the width direction. As a result, the water flowing through the sorting trough is partially cut off in the width direction of the conveying surface due to the fact that the heavy specific gravity material that is being auctioned is unevenly distributed in the width direction of the conveying surface, which hinders the stirring of the object to be sorted. It can be prevented from occurring.

It is a side view of the wet specific gravity sorter of Example 1 concerning this invention. It is a top view of the wet specific gravity sorter of Example 1 concerning this invention. It is a front view of the wet specific gravity sorter of Example 1 concerning this invention. It is a principal part expansion perspective view of the lower end part of the wet specific gravity sorting apparatus of Example 1 which concerns on this invention. It is a longitudinal cross-sectional view which shows the use condition of the selection trough which comprises a part of wet wet specific gravity selection apparatus of Example 1 which concerns on this invention. It is a principal part expanded longitudinal cross-sectional view which shows the use condition of the selection trough which comprises a part of wet wet specific gravity selection apparatus of Example 1 which concerns on this invention.

  Examples of the present invention will be specifically described below. For convenience of explanation, the X1 direction (downward on the conveyance surface) is the front direction of the apparatus, the X2 direction (upward direction of the conveyance surface) is the rear direction of the apparatus, the Y1 direction is the left direction of the apparatus, and the Y2 direction is the direction of the apparatus. The right direction, the Z1 direction is the upward direction of the device, and the Z2 direction is the downward direction of the device.

  1 to 4, reference numeral 10 denotes a wet specific gravity sorting apparatus according to Embodiment 1 of the present invention. The wet specific gravity sorting apparatus 10 has an object to be sorted 12 dropped on a conveying surface 11 a inclined up and down, and a lower end. A light trough discharge port 13 for discharging a light specific gravity material 12a is formed in the portion, and a sorting trough 11 in which a heavy specific material discharge port 14 for discharging a heavy specific gravity material 12b is formed in the upper end portion, and a sorting An apparatus base 15 that supports the trough 11 from below, a water flow generating means 16 that constantly supplies water to the upper portion of the sorting trough 11, and generates a flow of water (water flow) downward along the transport surface 11a, and a sorting trough 11 and the apparatus base 15, and the selection trough 11 is vibrated obliquely upward, so that the specific gravity object 12 b on the transport surface 11 a gradually competes in the water supplied from the water flow generating means 16. Vibration means to raise 7 and shower means S having 5 pairs (10) of injection nozzles 18 for injecting water toward the heavy specific gravity object 12b being auctioned by the vibration means 17 and stirring and washing the heavy specific gravity object 12b, Of the lower end of the sorting trough 11, provided upstream of the light specific gravity outlet 13 in the width direction of the sorting trough 11, the light specific gravity 12a is overflowed with water by utilizing the specific gravity difference, and the heavy specific gravity. The object 12b is provided with a sorting weir 19 to be dammed.

  Here, the to-be-sorted object 12 is a radiator shredder crushed material, and the light specific gravity material 12a is a thick plate-shaped aluminum piece (average length 40.6 mm, average width 22.5 mm, average thickness 5.2 mm, average weight 6.2g), the heavy specific gravity 12b is a copper pipe piece (average length 49.9mm, average width 9.3mm, average thickness 3.3mm, average weight 5.1g) deformed into a thin plate shape. is there. The shredder crushed material is obtained by sequentially separating and recovering magnetic materials such as iron by a magnetic separator and separating and recovering non-conductors such as plastic and wood by an eddy current separator.

The sorting trough 11 is a bowl-shaped member having a bottom plate that is long in the X1-X2 direction and having a length of 195 cm, a width of 39 cm, and a height of 17 cm. The flat top surface of the bottom plate is covered with a rubber mat or embossed. This is the transport surface 11a. A flange is formed on the upper edge of both side plates of the sorting trough 11. The sorting trough 11 has a long partition in the X1-X2 direction that divides the portion of the transport surface 11a from directly below the water flow generating means 16 to the sorting weir 19 into two in the width direction of the transport surface 11a. A plate 20 is erected. A pair of left and right partial transport paths a and b appear in the lower portion of the sorting trough 11 by the partition plate 20. The height of the partition plate 20 is substantially the same as the height of the sorting weir 19. In addition, the height of the partition plate 20 can be arbitrarily changed between the upper edge of the sorting weir 19 and the upper edges of both side plates of the sorting trough 11.
The X1 side end of the sorting trough 11 is opened to form a light specific gravity discharge port 13. In addition, a triangular chute portion 11b in a plan view is formed on the X2 side end of the sorting trough 11 at a position one step down. The heavy specific gravity discharge port 14 is provided at the tip of the chute 11b.

  The device mount 15 is a gate-shaped frame member that is long in the X1-X2 direction (FIGS. 1 to 3). The inclination angle of the selection trough 11 with respect to the apparatus base 15 is configured to be adjustable between 0 ° and 12 °. In addition, a pair of spring supports 21 that support the sorting trough 11 on the device stand 15 so as to vibrate are disposed between the device stand 15 and the sorting trough 11. The spring support 21 has a lower end pivotally supported by the apparatus base 15 via a bracket, a link 22 whose upper end is pivotally supported by the sorting trough 11, and a lower end pivoted by the apparatus base 15 via the bracket. The coil spring 23 is supported at the upper end and is pivotally supported by the sorting trough 11. These pivot support portions are respectively provided with pivot pins that are long in the Y1-Y2 direction. Both spring supports 21 forcibly support the end portion on the X1 side and the end portion on the X2 side of the sorting trough 11 from below.

  Of the bottom plate of the sorting trough 11, the vibration means 17 for vibrating the sorting trough 11 in the tilt direction is provided at the intermediate portion in the X1-X2 direction (FIG. 1). The vibration means 17 includes a bearing 24 fixed to the apparatus base 15, a rotating shaft 25 that is supported by the bearing 24 and extending in the Y1-Y2 direction, and a lower end portion connected to a tip end portion of the rotating shaft 25. , An eccentric link 26 pivotally supported by a bracket whose upper end is fixed to the sorting trough 11, a driven pulley 27 whose center is fixed to the tip of the rotary shaft 25, and X1-X2 of the upper frame of the apparatus mount 15 And a drive motor 29 installed on an inverted gate-shaped small frame base 28 extending downward from a middle portion of the direction. A drive pulley 30 is fixed to the output shaft of the drive motor 29, and an endless belt 31 is bridged between the drive pulley 30 and the driven pulley 27.

Above the lower portion of the sorting trough 11, a raw material charging chute 32 having a rectangular shape in a plan view whose length in the Y1-Y2 direction is substantially the same as the width of the transport surface 11a is disposed. Therefore, approximately half of the object to be sorted 12 dropped from the raw material charging chute 32 onto the conveying surface 11a is charged into the left and right partial conveying paths a and b.
Further, a water flow generating means 16 is disposed above the upper end of the sorting trough 11. The water flow generating means 16 is disposed above the upper portion of the sorting trough 11, supplies a water tank 32A that overflows water over the entire width direction of the transport surface 11a, supplies tap water to the water tank 32A, and is in the Y1-Y2 direction. And a uniform flow path 34 for draining the water overflowing from the water tank 32A at a uniform flow rate over the entire width direction of the transport surface 11a.

  The water tank 32A has a rectangular water storage portion 35 as a main body in a plan view long in the Y1-Y2 direction, and has a peripheral side plate higher than the formation wall of the water storage portion 35 in the periphery (FIGS. 1 and 5). Further, the side plate 35a on the downstream side of the water storage unit 35 has the same height over the entire length in the Y1-Y2 direction, and the side plate 35a on the downstream side of the water storage unit 35 and the side plate on the downstream side of the water tank 32A (flow rate regulation). The uniform flow path 34 is arranged between the plate 32a. The uniform flow path 34 is a constant gap over the entire length in the length direction.

  Five shower drain pipes 36 that are long in the Y1-Y2 direction are arranged at a predetermined pitch in the X1-X2 direction above the area between the sorting weir 19 and the water tank 32A in the sorting trough 11. Has been. The five pairs of injection nozzles 18 for injecting tap water into the partial transport paths a and b are communicated with both sides of each shower drain pipe 36 in an inclined manner in the X1 direction. The raw material charging chute 32 is disposed between the shower drain pipe 36 disposed on the most downstream side and the shower drain pipe 36 adjacent thereto.

The sorting weir 19 is made of a stainless steel wire mesh having a mesh size of 1 mm in length and width that does not hinder water flow. Therefore, the sorting weir 19 is formed with a large number of water passage holes 19a penetrating the upstream surface and the downstream surface. The height of the sorting weir 19 is 70 mm.
The sorting weir 19 is inclined by 30 ° so that the upper portion of the sorting weir 19 is close to the upstream portion of the transport surface 11a with respect to the surface orthogonal to the transport surface 11a. Further, the lower portion of the sorting weir 19 is inclined 45 ° in the direction approaching the upstream portion of the transport surface 11a. That is, the lower part of the sorting weir 19 is bent more than the upper part thereof, and constitutes a support material for the upper part of the sorting weir 19.

Next, with reference to FIGS. 1-6, the wet specific gravity sorting method of the to-be-sorted object 12 by the wet specific gravity sorter 10 based on Example 1 of this invention is demonstrated.
As shown in FIG. 1, the output shaft of the drive motor 29 is rotated to rotate the endless belt 31. As a result, the eccentric link 26 rotates eccentrically, and the sorting trough 11 elastically supported on the device mount 15 via the two spring supports 21 always vibrates obliquely upward.

  Next, as shown in FIGS. 1 and 5, first, in the water flow generating means 16, the water discharged from the water supply pipe 33 is constantly supplied to the water storage unit 35. The water accumulated in the water storage section 35 overflows over the entire width direction of the transport surface 11 a and passes through the uniform flow path 34. At this time, the overflowed water has a uniform flow rate over the entire width direction of the transport surface 11a, and is always supplied to the upper portion of the sorting trough 11 during the operation of the apparatus. Thereby, the water in the sorting trough 11 generated by the water flow generating means 16 can be made to flow with a uniform amount of water over the entire width direction of the transport surface 11a of the sorting trough 11.

The amount of water at this time is 300 to 350 liters / minute, which can be easily swept away with the light specific gravity 12a, but difficult to flow away with the heavy specific gravity 12b. The object to be sorted 12 dropped on the transport surface 11a is pushed toward the lower end of the sorting trough 11 by the pressure of this water.
At that time, the objects to be sorted 12 in the water flow are gradually stratified so that the light specific gravity 12a becomes the upper layer and the heavy specific gravity 12b becomes the lower layer due to the specific gravity difference. At this time, the heavy specific gravity 12b that has settled on the transport surface 11a is gradually auctioned along with the vibration of the sorting trough 11 obliquely upward by the vibration means 17, and finally the weight specific gravity of the upper end of the sorting trough 11 is increased. It is discharged from the material discharge port 14 and recovered as, for example, a resource (FIG. 5).

  Moreover, the area | region from the water flow generation means 16 to the sorting weir 19 among the conveyance surface 11a is divided into two by the width direction of the conveyance surface 11a by the partition plate 20 whose height is the same as the height of the sorting weir 19. (FIG. 1). Therefore, the water flow generated from the water flow generating means 16 is divided into two in the width direction of the transport surface 11a (FIGS. 2 to 4). As a result, the water flowing through the sorting trough 11 is partially cut in the width direction of the transport surface 11a due to the fact that the objects to be sorted 12 on the transport surface 11a are unevenly distributed in the width direction of the transport surface 11a. It is possible to prevent troubles in the stirring of the object 12a and the heavy specific gravity object 12b.

  At this time, as shown in FIG. 5 and FIG. 6, water is sprayed from the spray nozzles 18 of the shower means S arranged close to the heavy specific gravity object 12 b that is moving (auctioned), and the specific gravity is heavy. The object 12b is stirred while being washed. Thereby, the specific gravity selection of the light specific gravity object 12a and the heavy specific gravity object 12b is partially promoted in the moving heavy specific gravity object 12b. That is, the light specific gravity object 12a that has been hidden between the heavy specific gravity objects 12b is moved to the upper layer side by the stirring action by the water jet, and then the light specific gravity object 12a is swept toward the lower end of the sorting trough 11 by the water flow. .

On the other hand, the light specific gravity 12a including those moved to the upper layer overflows the sorting weir 19 together with the water near the water surface at the lower end of the sorting trough 11 (FIG. 6). At this time, a part of the water reaching the sorting weir 19 passes through each water passage hole 19a. Further, the water colliding with the sorting weir 19 is inclined so that the sorting weir 19 is close to the upstream portion of the transport surface 11a, so that the water flow that sinks into the lower part of the water storage area that appears on the upstream side of the sorting weir 19 Thus, a turbulent flow is generated in the water storage area, and the specific gravity sorting of the object to be sorted 12 is promoted, and the heavy specific gravity object 12b colliding with the sorting weir 19 is sequentially settled and placed on the transport surface 11a.
Thereby, the plate-like light specific gravity 12a and the plate-like heavy specific gravity 12b can be subjected to wet specific gravity selection in a short time and with high accuracy. As a result, the recovery rate of each plate-like light specific gravity material 12a and heavy specific gravity material 12b can be increased.

  At this time, the lower portion of the sorting weir 19 has a larger inclination angle in the direction closer to the upstream portion of the transport surface 11 a than the upper portion of the sorting weir 19. The flow of light specific gravity 12a is promoted by the flow of water above the sorting weir 19, and the sink of the heavy specific gravity 12b toward the transport surface 11a is promoted by the flow of water below the sorting weir 19. .

  Further, if the inclination angle of the lower portion of the sorting weir 19 is increased in this way, the sorting weir 19 is bent to a greater shape, so that the object to be sorted 12 that flows between the conveying surface 11a and the lower portion of the sorting weir 19 is obtained. Is difficult to be discharged. However, since the sorting trough 11 constantly vibrates obliquely upward by the vibration means 17, even the sorting object 12 that has entered such a narrow tapered space can be easily discharged from this space.

  This invention is a wet specific gravity sorting that collects and collects various composite waste crushed materials obtained by crushing used home appliances and used automobiles by separating them into light specific gravity and heavy specific gravity using the specific gravity difference. Useful as a device.

10 Wet specific gravity sorter,
11 Sorting trough,
11a Conveying surface,
12 Sorted items,
12a Light specific gravity,
12b Heavy specific gravity,
13 Light specific gravity outlet,
14 Heavy specific gravity discharge port,
16 Water flow generating means,
17 Vibration means,
18 spray nozzle,
19 Sorting weir,
19a water hole,
S Shower means.

Claims (3)

A light specific gravity object and an object to be sorted mixed with heavy specific gravity are placed on the conveyance surface inclined up and down, a light specific gravity discharge port is formed at the lower end, and the heavy specific gravity is formed at the upper end. A sorting trough with a discharge opening,
Water flow generating means for constantly supplying water to the upper portion of the sorting trough and generating a flow of water downward along the conveying surface;
Vibrating means that vibrates the sorting trough diagonally upward, and gradually auctions heavy specific gravity on the transport surface in the water supplied from the water flow generating means,
Shower means having an injection nozzle for jetting water toward the heavy specific gravity material being auctioned by the vibration means, and stirring and washing the heavy specific gravity material;
A lower end portion of the sorting trough is provided at a portion upstream of the light specific gravity discharge port over the entire length in the width direction of the sorting trough, and the light specific gravity is caused to overflow with water by utilizing a specific gravity difference. The specific gravity is equipped with a sorting weir to clog,
The sorting weir is formed with a plurality of water passage holes penetrating the upstream surface and the downstream surface, and the sorting weir is upstream of the transport surface with respect to a surface orthogonal to the transport surface. A wet specific gravity sorting device inclined so as to be close to the part ,
The wet specific gravity sorter in which the lower part of the sorting weir has a larger inclination angle in the direction closer to the upstream part of the transport surface than the upper part of the sorting weir . The water flow generating means is
A water tank that is arranged on the upper part of the sorting trough and overflows water over the entire width direction of the transport surface;
The wet specific gravity sorter according to claim 1, further comprising a uniform flow path for draining water overflowing from the water tank at a uniform flow rate over the entire width direction of the transport surface. 3. The partitioning trough provided with a partition plate that divides a portion of the transport surface from the water flow generating means to the sorting weir into a plurality of portions in the width direction of the transport surface. wet gravity separation device according to.

Images