JP3569199B2 - Sorting machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sorting machine capable of effectively separating a material to be sorted in which substances having different specific gravities, weights and shapes are mixed, for example, industrial wastes such as construction waste materials into heavy and light materials.
[0002]
[Prior art]
Conventionally, industrial waste, for example, construction waste, is dumped once in a processing yard, and then large waste is separated by its material (metal, wood, concrete, etc.), and the remaining small waste is crushed by a crusher. The crushed material is crushed into a size that can pass through a sieve of 30 mm to 50 mm, and iron and aluminum are recovered from the crushed material by a magnetic separator or a non-ferrous metal separator. The crushed material from which the metal has been removed includes materials having a large specific gravity, such as sand, crushed concrete, and stone, and materials having a small specific gravity, such as wood, plastics, gypsum (gypsum board), and paper. Although they have passed through a sieve, they vary in size and shape. It is desirable that the crushed material (waste) from which the metal is removed is also separated and sorted as much as possible according to differences in specific gravity, size, etc., and reused as valuable resources.
[0003]
By the way, a specific gravity separation device (for example, Japanese Patent Publication No. 64-1192) has been used as a device for separating and separating materials to be sorted, in which substances having different specific gravities are mixed, into light and heavy materials by utilizing the difference in specific gravity. Are known. The basic structure of this specific gravity separator is such that a mesh-like diaphragm is provided at an angle, air is blown up from below the mesh-like diaphragm to the diaphragm, and a material to be sorted is put on the mesh-like diaphragm, and a weight having a large specific gravity is provided. An object is moved toward the upper end and discharged from the heavy-weight outlet, and a light-weight object having a small specific gravity is separated and moved toward the lower end to discharge from the light-weight outlet. This specific gravity separator is suitably used for the purpose of removing foreign substances from cereals and the like.
[0004]
However, this specific gravity separation device cannot perform sufficient separation and separation processing on various miscellaneous materials to be sorted. Therefore, the applicant of the present application has proposed a specific gravity separation device with further improved separation performance (Japanese Patent Application Laid-Open No. 11-262733). A sorting device using a specific gravity difference disclosed in this publication will be described with reference to FIG.
[0005]
In the figure, reference numeral 50 denotes a sorting device. In the sorting device 50, a sorting perforated plate 58 is housed in a vibrating box 64, and the sorting perforated plate 58 is provided at an appropriate inclination as shown in the figure. This inclination angle is appropriately set as needed. Reference numeral 82 denotes a hood, and the hood 82 is provided with a raw material inlet 72. Reference numeral 55 denotes a wind tunnel provided below the vibrating box 64, and a blower fan device 56 is housed in the wind tunnel 55. Incidentally, reference numeral 60 denotes a motor for driving the fan device 56, and reference numeral 84 denotes a fine object outlet communicating with the fan device 56.
[0006]
At the right and left sides of the vibrating box 64, arms (hangers), not shown, are provided at two positions on the left and right sides, and the upper end of the arm is attached to the frame 54, and the lower end is attached to the side outer surface of the vibrating box. Have been.
[0007]
An eccentric crank 68 is driven by a motor 70. The eccentric crank 68 has one end connected to a lever 66 connected to the vibration box 64. When the rotational motion of the eccentric crank 68 is transmitted to the vibrating box 64 as a reciprocating motion, the vibrating box 64 and the sorting perforated plate 58 provided therein vibrate (oscillate) around the upper end of the arm. ).
[0008]
Reference numeral 74 denotes a discharge port for a heavy substance having a large specific gravity formed at the upper end of the sorting perforated plate 58, and reference numeral 76 denotes a discharge port for a light substance having a small specific gravity formed at the lower end of the sorting perforated plate 58. Numeral 78 denotes a dust collecting pipe attached to the vibration box 64, and a dust collecting air volume adjusting plate 80 for adjusting a dust collecting air volume is provided below the pipe.
[0009]
In this type of sorting machine, the material to be sorted is supplied to the center of the sorting perforated plate 58, and air is blown from below the sorting perforated plate 58 to flow the raw material. Due to this flow, a light-weight object having a low specific gravity is positioned above a heavy-weight object having a high specific gravity due to buoyancy. Since the lower heavy object is vibrated on the sorting perforated plate 58, the lower heavy object moves obliquely upward under the action. Also, the upper lightweight object moves diagonally downward because it is not much affected by the vibration action and the sorting perforated plate 58 is inclined. The air is discharged from the dust collection pipe 78. As a result, the material to be sorted is separated into light and heavy objects.
[0010]
Specifically, materials having a low specific gravity, such as wood, plastics, gypsum (gypsum board), and paper, are selected (separated) as lightweight materials. In addition, materials having a large specific gravity, such as sand, pebbles, crushed concrete, and stones, are classified into light-weight materials having a particle size of about 5 mm or less and light-weight materials, and the remaining heavy-weight materials. In other words, heavy objects are only large incombustibles, and light objects are mixtures of combustibles and small incombustibles.
[0011]
[Problems to be solved by the invention]
By the way, floatable lightweight materials such as paper and plastic sheets can be reliably separated as lightweight materials, but among the lightweight materials, relatively heavy ones, that is, some of the pebbles, plastic pieces, wood pieces, etc. It may be discharged from the heavy material discharge port 74. If the heavy material is only a large noncombustible material, its use will be expanded, such as backfill material and concrete aggregate, but if a light material is mixed in, its use will be limited. In particular, when combustible materials such as plastic pieces and wood pieces are mixed, the use is further limited.
[0012]
The present invention has been made in view of the above-described problems, and has as its object to provide a sorting machine that can prevent combustibles such as plastic pieces and wood pieces from being discharged from a discharge port of heavy loads.
[0013]
[Means for Solving the Problems]
In order to solve the above problems, a sorting machine of the present invention is provided with a sorting perforated plate inclined in a vibrating box, air is blown up from below the sorting perforated plate to the surface of the sorting perforated plate, Sorting materials in which substances with different specific gravities and weights are mixed together, and vibration is applied to the sorting perforated plate to separate the heavy objects toward the upper end and the light objects toward the lower end. A baffle plate is provided above the upper end of the sorting perforated plate to direct the air passing through the sorting perforated plate toward the center of the vibrating box.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but it goes without saying that various modifications can be made without departing from the technical idea of the present invention.
[0015]
FIG. 1 is a partially cutaway schematic front view showing an embodiment of a sorting machine of the present invention. FIG. 2 is a partial perspective view of the sorting perforated plate. FIG. 3 is an explanatory view showing an example of the shape of the sorting perforated plate.
[0016]
In FIG. 1, reference numeral 2 denotes a sorting machine according to the present invention. The sorting machine 2 is divided into a vibrating box 3 in which an upper sorting perforated plate 8 is stored and a wind box 4 therebelow, both of which are connected by a canvas 5. The sorting perforated plate 8 is provided to be appropriately inclined as shown in the figure. This angle of inclination is appropriately set according to the article to be processed, but generally about 6 ° to 18 ° is sufficient.
[0017]
The wind box 4 is mounted on a base 15, and the vibration box 3 is suspended by a frame 17 via an arm 7. The arm 7 is provided on each side of the vibrating box 3 at two locations on the left and right. The upper end of the arm 7 is attached to the frame 17 and the lower end is attached to the outer surface of the side of the vibrating box 3.
[0018]
A lever 11 that engages with the eccentric crank 10 is attached to the outer side surface of the vibration box 3, and the rotational motion of the eccentric crank 10 is transmitted to the vibration box 3 as a swinging motion. Due to this swinging motion, as shown by the arrow A in FIG. 1, the vibrating box 3 and the sorting perforated plate 8 provided therein vibrate (oscillate) around the upper end of the arm 7.
[0019]
The upper portion of the vibration box 3 is provided with an inlet 28 and an air outlet 23 for the material W to be sorted, an outlet 30 for a heavy object at one end, and an outlet 32 for a light material at the other end. . The frame 17 is engaged with a shaft 34 provided on the base 15 so that the inclination angle thereof can be adjusted. If the inclination angle of the frame 17 is changed, the inclination angle of the vibrating box 3 is also changed, and fine adjustment of the inclination angle of the sorting perforated plate 8 and the inclination angle of the rectifying perforated plate 12 described later can be performed. This angle is about 2 °, and when fine adjustment is completed, the frame 17 is fixed to the base 15.
[0020]
As the selection perforated plate 8, a perforated plate having a large number of through holes formed in a flat plate can be used, but a perforated selection plate 8 having a sawtooth side surface is preferably used (see FIGS. 2 and 3). The diameter of the through-hole (vent) 8a formed in the sorting perforated plate 8 can be approximately 1 mm to 5 mm, and the sorted perforated plate 8 having a diameter of 2 mm to 3 mm is preferably used. Further, the aperture ratio of the selection porous plate 8 is preferably 20 to 50%. The sorting perforated plate 8 having a serrated side surface has a continuous inclined surface 8b and a vertical surface 8c, and the inclined surface 8b is provided with a large number of through holes 8a. The vertical surface 8c may have various shapes, such as a through hole, a combination of the inclined surface 8b with a horizontal surface and an inclined surface, or a steep inclined surface of the vertical surface 8c.
[0021]
The space below the sorting perforated plate 8 is an air chamber H, in which air introduced from the air introducing port 6 provided in the wind box 4 is stored. The air chamber H is provided with a rectifying perforated plate 12 that partitions the air chamber H up and down. The rectifying perforated plate 12 is disposed below the sorting perforated plate 8 at a predetermined interval.
[0022]
The air chamber H is provided with a partition plate 9 (9a, 9b) that partitions the air chamber H into an air chamber H1 on the heavy load side (upper end side of the sorting perforated plate 8) and an air chamber H2 on the lightweight load side. I have. The air chambers H1 and H2 are provided with air inlets 6 and 6, respectively. Further, a fine material outlet 13 is provided at an end of the rectifying porous plate 12.
[0023]
The partition plate 9 is divided into an upper partition plate 9a and a lower partition plate 9b, and a slight gap is provided between the partition plate 9 and the rectifying porous plate 12. The gap below the rectifying perforated plate 12 is provided to cut off the edges of the rectifying perforated plate 12 because the rectifying perforated plate 12 vibrates together with the vibration box 3 while the lower partition plate 9b is fixed. The gap above the perforated plate 12 is provided for moving the fine object s on the rectifying perforated plate 12 as described later. When the rectifying porous plate 12 is not provided, the partition plate 9 may be integrated without being divided.
[0024]
Above the sorting perforated plate 8, a plurality (two in the illustrated example) of upper partitioning plates 14 are provided. The upper partition plate 14 is installed at a predetermined distance from the sorting perforated plate 8 and the ceiling of the vibrating box 3, and as shown in FIG. That is, the upper partition plate 14 is substantially parallel to the partition plate 9, and is installed over substantially the entire width of the vibration box 3.
[0025]
An outlet weir plate 18 is provided at the lower end of the sorting perforated plate 8, and a suction unit 20 is provided for sucking a light-weight object that is susceptible to buoyancy from a light-weight object that stays near the outlet weir plate 18. . The outlet weir plate 18 is inclined in the opposite direction to the sorting perforated plate 8. In addition, the length and the inclination angle of the outlet weir plate 18 can also be adjusted.
[0026]
A baffle plate 22 is provided above the upper end of the sorting perforated plate 8 at a predetermined interval from the sorting perforated plate 8. The length, mounting position, and inclination angle of the baffle plate 22 can also be adjusted.
[0027]
Next, the operation of this embodiment will be described. The material W to be sorted is supplied to the center of the sorting perforated plate 8. The material W to be sorted is a mixture of substances having different specific gravities, shapes, sizes, and the like. When metals are included, the materials W are removed by a magnetic force sorter or a non-ferrous metal sorter.
[0028]
Although the sizes are different, it is desirable to limit the sizes in order to increase the sorting accuracy. For example, fine materials that pass through the sieve by sieving are removed from the upper sieve, fine materials that cannot pass through the sieve are removed, or are crushed to a size that can pass a certain sieve. It is desirable to use the crushed material as the material to be sorted W. The size of the sieve is not particularly limited, but is about 30 mm to 50 mm as a guide.
[0029]
In the prior art, it has been described that small waste is crushed in the process of building waste and metal is recovered from the crushed material. However, in the following description, crushed material from which the metal has been removed (waste ) Will be described as the material W to be sorted.
[0030]
The material W to be sorted on the sorting perforated plate 8 flows because air is blown up from below the sorting perforated plate 8, and a fluidized layer of the material W to be sorted is formed on the sorting perforated plate 8. Due to this flow, the fluidized bed is formed into three layers: an upper layer in which light-weight materials that are susceptible to buoyancy gather, a lower layer in which heavy materials that are less susceptible to buoyancy gather, and an intermediate layer in which both are mixed. At this time, since the sorting perforated plate 8 is vibrating in substantially the same direction as the inclination direction, the stratifying action due to the horizontal vibration causes the lightweight material in the middle layer to float and the heavy material to sink. For this reason, a fluidized bed composed of two layers, an upper layer made of a lightweight material and a lower layer made of a heavy material, is formed. The light-weight materials mainly include materials having a small specific gravity, such as wood, plastics, gypsum, and paper, but also include materials having a large specific gravity, such as small (crushed particles having a particle size of about 5 mm or less) concrete and sand. . The heavy object is a crushed concrete object, a stone, or the like, which has a large specific gravity and a large weight.
[0031]
Since the lower heavy object is vibrated in the same direction as the inclination of the sorting perforated plate 8, the lower heavy object moves obliquely upward due to the action. At this time, if the side surface of the sorting perforated plate 8 has a saw-tooth shape, the vertical surface 8c can prevent the kicked heavy object from rolling down along the slope, because it can kick the heavy object and increase the moving distance. Since it can be blocked, a heavy object can be quickly moved to the heavy object outlet 30. In addition, the upper lightweight object moves diagonally downward because it is not much affected by the vibration action and the sorting perforated plate 8 is inclined. In addition, a part of the crushed concrete or sand, particularly a fine (small particle size of about 1 mm or less) fine s, falls partly through the through-hole 8a of the sorting perforated plate 8. The air is discharged from the air outlet 23 together with dust and the like. As a result, the light objects in the sorted material W move obliquely downward and are discharged from the light object outlet 32, and the heavy objects move obliquely upward and are discharged from the heavy object outlet 30.
[0032]
At this time, if the rectifying perforated plate 12 is provided, uniform air reaches the lower surface of the sorting perforated plate 8 from the through hole 12a and blows up from the through hole 8a. The material W to be sorted flows in a preferable state on the sorting perforated plate 8 by the air which is blown up uniformly, and the above-described horizontal vibration causes two layers of an upper layer made of a lightweight material and a lower layer made of a heavy material. A fluidized bed is formed. If the rectifying perforated plate 12 is not provided, air blow-through or the like will occur, and uniform air cannot be sent to the lower surface of the sorting perforated plate 8 and a preferable flow state cannot be maintained. This allows the material W to be sorted to be in a preferable fluidized state on all upper surfaces of the sorted perforated plate 8 to form a fluidized bed including two layers.
[0033]
As described above, the rectifying perforated plate 12 is provided below the sorting perforated plate 8 at a predetermined interval. For this reason, the minute object (falling object) s falling through the through hole 8a of the sorting perforated plate 8 falls toward the straightening perforated plate 12 as it is. Similarly, the elongated material W to be sorted falls toward the rectifying perforated plate 12. As described above, the falling object s falls toward the rectifying perforated plate 12 provided at a predetermined interval without staying immediately below the sorting perforated plate 8 as in the prior art. There is no possibility that the flow of air is hindered by s. Furthermore, the air that has passed through the rectifying perforated plate 12 has a large interval between the rectifying perforated plate 12 and the sorting perforated plate 8, so that the rising speed is averaged.
[0034]
Then, in a state where the preferable flow is maintained, the lower heavy object is separated from the upper light object by the vibrating action in the same direction as the inclination of the sorting perforated plate 8 to the obliquely upper heavy object outlet 30. Due to the inclination of 8, it is surely separated into a light-weight outlet at an obliquely lower position.
[0035]
It is desirable that the aperture ratio of the rectifying perforated plate 12 be smaller than the aperture ratio of the sorting perforated plate 8 and that the pressure loss of air be about 30 mm water column to 70 mm water column. If the opening ratio of the rectifying perforated plate 12 is made smaller, not only is it effective to send uniform air to the sorted perforated plate 8, but also fine substances s that have fallen from the ventilation holes 8 a of the sorted perforated plate 8 can be reduced. In addition, it is possible to prevent the flow-through plate 12 from dropping from the through hole 12a to the wind box 4 below. That is, air flows at high speed through the through-holes 12a of the rectifying perforated plate 12, and the fines s cannot pass through the through-holes 12a. Then, the fine material s is discharged from the fine material outlet 13. By providing the rectifying perforated plate 12 in this manner, the sorting machine 2 can surely separate the material to be sorted W into a heavy object and a light object, and also can separate the fine material s in the material to be sorted W.
[0036]
The through-holes 12a of the rectifying porous plate 12 are formed as pores, and for example, those having a diameter of about 1 mm are suitably used. With such fine pores, the fine material s can be more reliably maintained on the upper surface of the rectifying porous plate 12.
[0037]
Further, the rectifying perforated plate 12 may be provided in the vibration box 3 in a horizontal state, but is desirably slightly inclined as shown in the figure. Then, the fine material outlet 13 is provided on the same side as the heavy material outlet 30. The fine material s flows (floats) on the flow-regulating perforated plate 12 due to the air passing through the flow-regulating perforated plate 12, but when it lands on the flow-regulating perforated plate 12, it attempts to move along the slope. Due to the vibration effect acting on the rectifying perforated plate 12, it moves toward the fine object outlet 13 side.
[0038]
In this way, if the rectifying perforated plate 12 is inclined in the direction opposite to the inclination of the sorting perforated plate 8, the fines s can be reliably discharged from the fines outlet 13. Note that an inclination angle of about 1 ° to 6 ° is sufficient.
[0039]
As described above, in the case of the sorted material W in which objects having different specific gravities, shapes, sizes, and the like are mixed, a small lightweight object is caught in a large heavy object, or a bar-shaped wood does not receive much buoyancy, It may be discharged as heavy. Therefore, the air passing through the sorting perforated plate 8 on the heavy load discharge side by supplying more air to the heavy load side air chamber H1 than the light load side air chamber H2 by the partition plate 9 for the air load H. Is made larger than the passage velocity of the air passing through the sorting perforated plate 8 on the light-weight discharge side.
[0040]
The heavy material has lower fluidity than the light material, but by increasing the air flow velocity, the fluidity of the material W to be sorted can be made favorable even on the heavy material side. If the material W to be sorted flows sufficiently, the light-weight object entrained in the heavy object is separated from the heavy object, so that both can be reliably separated. If the flow velocity of the air is large, the bar-shaped wood also receives sufficient buoyancy, and is located above the heavy load, and can be separated (sorted) as a light weight reliably.
[0041]
Even if the material to be sorted W has the same specific gravity, it is separated into a heavy object and a light object by its weight (size). For example, in the case of a stone and a smaller pebble, the ratio of the area subjected to buoyancy to the weight is larger for the pebble. For this reason, if the material W to be sorted flows by air to form a fluidized bed composed of two layers, the pebbles will be on the upper side of the stones, and the pebbles will be light-weighted from the light-weight outlet 32 as in the case described above. The stone is discharged from the heavy load outlet 30 as a heavy load.
[0042]
In this way, the air chamber H is partitioned by the partition plate 9 and a large amount of air is supplied to the air chamber H1 on the heavy object side, so that a heavy substance having poor fluidity flows in a preferable state. Objects can be reliably separated. In addition, the material to be sorted W having the same specific gravity can be separated into a heavy object and a light object by its weight (size).
[0043]
The air that has passed through the sorting perforated plate 8 flows toward the air outlet 23 together with the dust. At this time, if the upper partition plate 14 is provided above the sorting perforated plate 8, the air rises straight and then changes its direction from near the upper end of the upper partition plate 14 toward the air outlet 23. Become. As described above, since the upper partition plate 14 is provided, the air that has passed through the sorting perforated plate 8 does not directly go to the air outlet 23 but rises uniformly before going to the air outlet 23. For this reason, the air passing through the sorting perforated plate 8 becomes more uniform, and the material W to be sorted can flow on the sorting perforated plate 8 in a preferable state.
[0044]
Further, even if the material to be sorted W supplied onto the sorting perforated plate 8 is largely obliquely blown upward by vibration, it will collide with the upper partition plate 14. In addition, the light-weight objects in the material to be sorted W also collide with the upper partition plate 14 when moving obliquely downward. As described above, the material W to be sorted collides with the upper partition plate 14, so that the material W is not discharged from the heavy material outlet 30 or the light-weight material outlet 32 without being sufficiently subjected to the sorting operation. Can be.
[0045]
Further, the material W to be sorted collides with the upper partition plate 14, so that the thickness of the fluidized bed on the sorting porous plate 8 by the material W to be sorted can be secured. For this purpose, one side of the upper partition plate 14 needs to be directed to the heavy material discharge port 30 side. If there is no material W to be sorted on the sorting perforated plate 8, air bleeding phenomenon occurs, in which air rises intensively from that portion. However, by securing a layer thickness of the material W to be sorted, a preferable flow is achieved. State can be maintained.
[0046]
The exit weir plate 18 provided at the lower end of the sorting perforated plate 8 is for retaining lightweight objects in the vicinity thereof. Generally, the weir members are often provided in the vertical direction, but the outlet weir plate 18 is inclined in the direction opposite to the sorting perforated plate 8 as shown in the figure. The inclination of the outlet weir plate 18 is not only the reverse slope of the sorting perforated plate 8 but also the opening angle of the sorting perforated plate 8 with respect to the inclined surface is preferably 90 ° or more, and 110 ° or more. It is more preferable that the angle is 135 ° or less.
[0047]
In the case of the sorting device 2, the outlet weir plate 18 is a vertical weir member, and when a vibration is applied, a lightweight object is kicked on the vertical surface and moves largely obliquely upward. However, when the opening angle with the sorting perforated plate 8 is increased, the kicking force in the horizontal direction is weakened, while the kicking force in the upward direction is strong. For this reason, lightweight objects cannot move significantly. Further, since the light-weight material is blocked by the outlet dam plate 18, the light-weight material stays near the outlet dam plate 18. For this reason, the sorting effect is long, the layer thickness of the upper layer made of a relatively light and light material and the lower layer made of a relatively heavy and light material becomes thicker, and the portion near the upper side is made of paper, plastic, wood, etc. Combustibles concentrate.
[0048]
At this time, if the suction means 20 is provided in the vicinity of the outlet weir plate 18, not only flammable flammable substances (lightweight) such as paper and plastic sheets, but also flammable flammable substances such as plastic pieces and wood pieces which are not strongly buoyant are provided. Things can also be sucked. In this way, the flammable light-weight material is suction-removed from the light-weight material, and the remaining non-flammable light-weight material, that is, gypsum and crushed concrete or sand having a particle size of about 5 mm or less is discharged from the light-weight material outlet 32. Is done. If the opening angle between the outlet weir plate 18 and the sorting perforated plate 8 is increased to 90 ° or more, desirably 110 ° or more, the stagnant amount of the light-weight material increases, and the combustible material can be accurately removed. However, the exit weir plate 18 requires a certain height, and the larger the opening angle is, the larger the exit weir plate 18 is. Therefore, the opening angle is preferably 145 ° or less.
[0049]
As described above, heavy objects such as crushed concrete and stones having a particle size of about 5 mm or more are discharged from the heavy object outlet 30, but there is a possibility that mixed light objects are also discharged. However, if a baffle plate 22 is provided above the upper end portion of the sorting perforated plate 8 so as to direct the air passing through the sorting perforated plate 8 toward the center of the vibrating box 3, the light-weight object is reduced by the flow of air. There is no danger of being pushed back to the center side of the vibration box 3 and being discharged from the heavy load outlet 30. For this reason, the sorted heavy objects are only non-combustible materials which do not include combustible materials such as plastic pieces and wood pieces. If the length, the mounting position, and the inclination angle of the baffle plate 22 are adjustable, the strength and direction of the air toward the center of the vibration box 3 can be adjusted, and the sorting accuracy can be further improved.
[0050]
In the present invention, the sorting machine 2 is divided into the vibrating box 3 and the wind box 4, but it is not always necessary to divide it, and the canvas 5 can be omitted and both can be integrated. In this case, the wind box 4 is suspended from the frame 17 via the arm 7 together with the vibration box 3.
[0051]
【The invention's effect】
As described above, according to the present invention, the baffle plate 22 that directs the air that has passed through the sorting perforated plate 8 toward the center of the vibrating box 3 is provided above the upper end portion of the sorting perforated plate 8. Only large noncombustible materials, which are not mixed with combustible materials such as plastic pieces and wood, can be sorted out as heavy items, and the reuse of the same can be expanded.
[Brief description of the drawings]
FIG. 1 is a partially cutaway schematic front view showing an embodiment of a sorting machine of the present invention.
FIG. 2 is a partial perspective view of a sorting perforated plate.
FIG. 3 is an explanatory view showing an example of the shape of a sorting perforated plate.
FIG. 4 is a schematic front view showing an example of a conventional sorting apparatus.
[Explanation of symbols]
2: sorting machine, 3: vibration box, 4: wind box, 5: canvas, 6: air inlet, 7: arm, 8: sorting perforated plate, 9: partition plate, 10: eccentric crank, 11: lever, 12 : Rectifying perforated plate, 13: fine material outlet, 14: upper partition plate, 15: base, 17: frame, 18: outlet weir plate, 20: suction means, 22: baffle plate, 23: air outlet, 28: inlet , 30: Heavy load outlet, 32: Light weight outlet, 34: Shaft, H: Air chamber, s: Fine material.

Claims (1)

A sorting perforated plate is provided at an angle in a vibrating box, air is blown up from below the sorting perforated plate to the surface of the sorting perforated plate, and a material to be sorted in which substances having different specific gravities and weights are mixed on the sorting perforated plate. Then, by applying vibration to the sorting perforated plate, a heavy material is separated and moved toward the upper end, and a light weight material is separated and moved toward the lower end. A sorter characterized by being provided with a baffle plate that directs air passing through the plate toward the center of the vibration box.

Images