JPH0889899A - Apparatus for sorting waste - Google Patents

Abstract

PURPOSE: To provide an apparatus for sorting waste which can reduce remarkably clogging, can minimize an air volume generation source, and does not need the enlargement of an apparatus. CONSTITUTION: A box-type hollow main body 4 having a waste supply port 2 in the upper part on one side and a waste discharge port 3 in the lower part on the other side is installed vibratably by a vibration means, and a porous member 5 which transfer waste supplied from a supply port to the discharge port side while sifting out the waste is installed nearly horizontally at the intermediate height in the main body. About a half of the supply port side of the porous member is formed in a sieve part 5a having numbers of sieving holes 5b, and about a half of the discharge port side of the porous member is formed in a pneumatic sorting part 5c having numbers of pneumatic sorting holes. A magnetic sorting part 17 is installed below the sieve part 5a of the porous member, and the lower part of the pneumatic sorting part 5c is formed as compartments 15 for the pneumatic sorting part. A wind force combination sieve forming part 18 is installed in a place which is located below the compartments 15a, 15b for pneumatic sorting part and adjacent to the magnetic sorting part 17, and the lower part of the wind force combination sieve forming part is formed as a compartment 19 for the wind force combination sieve forming part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste sorting apparatus for use in general waste and construction waste processing facilities, and more particularly to a sorting apparatus suitable for sorting mixed waste having different specific gravities. .

[0002]

2. Description of the Related Art Conventionally, as this type of sorting apparatus, for example, a rotary sorting apparatus for waste, which has been previously proposed by the applicant of the present invention, is known (Japanese Patent Laid-Open No. 4-358578).

In this sorter, a cylindrical screen having both ends opened and a large number of reverse feed scraping plates inside is placed substantially horizontally on a rotary roller, and both ends are placed inside the screen. A transport pipe that is open and has a feed screw inside extends from the front end opening of the screen to the middle and is arranged concentrically with an appropriate interval, and this interval serves as an annular passage and the front end opening of the screen. On the side, a plurality of air supply pipes are arranged toward the annular passage and the transportation pipe.

[0004]

However, the above-described conventional rotary sorting device has the following problems. B) Of the waste that falls from the transport pipe to the cylindrical screen, relatively heavy wire or wood chips (especially elongated ones) easily rub against the screen by the rotating action of the screen and get caught in the sieve hole, and gradually grows once caught. However, there is a problem that the sieve hole is finally closed. B) Light-weight plastics (sheets, bags, sponges, heat insulating materials) and waste such as paper need to be blown off by blowing air into the cylindrical screen. 30% of the total shows the effect
Considering that it is only about three times as much as the required air volume, the air volume is large, and an unnecessarily large one has to be used as the source of this wind. C) Since the screen surface of the screen becomes unnecessarily large, the apparatus becomes large in size, heavy, and driving power becomes large, which is not economical.

Therefore, the present invention has been made to solve the above-mentioned problems, and can greatly reduce clogging, further reduce the air flow generation source as much as possible, and increase the size of the apparatus. The object of the present invention is to provide a waste sorting device.

[0006]

In order to achieve the above-mentioned object, the invention of claim 1 vibrates a box-shaped hollow main body having a waste supply port at one end upper part and the same discharge port at the other end lower part. It is provided so that it can vibrate. A porous member for sieving the waste material supplied from the supply port and transporting it to the discharge port side is provided substantially horizontally at a position above the height direction in the main body.
In this porous member, a substantially half portion on the supply port side is formed in a sieve portion having a large number of sieve holes, and a substantially half portion on the discharge port side is formed in a wind selecting portion having a large number of wind selecting holes. A plurality of sieving holes of the sieving unit are provided between the inclined plates which are superposed and arranged so as to be inclined in the conveying direction, at a predetermined interval in the conveying direction of the waste. The air-selection holes of the air-selection unit are provided in the side walls of the recesses formed on the surface of the flat plate, which are opposed to each other and are substantially parallel to the waste transport direction. A magnetic sorting section is provided below the sieve section of the porous member, and a metal piece discharge port is provided in the magnetic sorting section. The lower part of the wind selecting part of the porous member is formed in the compartment for the wind selecting part, and the air supply port is provided in the compartment for the wind selecting part. A wind force combined type sieve unit is provided at a position adjacent to the magnetic separation unit below the compartment for the wind selected unit, and a sieve discharge port is provided in the wind force combined type sieve unit. The lower part of the combined wind force type sieve section is formed as a combined wind force type sieve section compartment, and an unsieved material discharge port and an air supply port are provided in the divided chamber. In addition, a suction hood is installed above the combined wind type sieve section.

According to a second aspect of the present invention, in the first aspect, the sieve portion has a stepped shape. According to a third aspect of the present invention, in the first or second aspect, the partition for the air separation section is divided into a front compartment and a rear compartment by a partition wall, and air supply ports are provided in both compartments. There is. In addition, suction hoods are provided above the air selection sections corresponding to both compartments. The invention of claim 4 is the front porous plate and the rear part according to claim 1, 2 or 3, wherein the sieve holes of the combined wind force type sieve portion are arranged to form the upper wall of the compartment for combined wind force type sieve portion. The perforated plates have different sizes. Further, the lower side of both porous plates is divided into a front compartment and a rear compartment, and both compartments are provided with an air supply port and an undersize discharge port, respectively.

[0008]

According to the invention of claim 1, the wastes thrown into the main body through the supply port, that is, the wastes crushed by the crusher, are subjected to the vibration action of the vibrating means on the porous member to the discharge port side. Be transported. During this transportation, finely crushed incombustibles in the waste pass through the sieve holes of the sieve unit and fall. Relatively large materials that do not pass through the sieve holes, that is, lightweight plastics, papers, wood pieces, rubber pieces, and wires do not pass through the sieve holes of the sieve section, and are conveyed to the air separation section. Then, in this air-selecting section, air jetted from the compartment for the air-selecting section through the air-selecting holes at a substantially right angle to the surface of the flat plate is effectively subjected to the levitation action and is selected, and the lightweight plastics and papers are separated by air. Collected from the floating suction hood, relatively heavy pieces of wood move on the air selection section and are discharged from the discharge port. At the time of this selection, since a plurality of sieve holes of the sieve portion are provided between the inclined plates that are superposed on each other, it is possible to significantly reduce the catching of particularly slender objects such as wood chips and wires in the waste. Although it can be sent to the wind-selecting section, and there is a wind-selecting hole in the wind-selecting section, this wind-selecting hole is provided on the opposite side walls that are almost parallel to the waste transport direction of the recess. Wood pieces are rarely caught. For this reason, the clogging of the sieve holes and the air selection holes is greatly reduced.

Next, the incombustible material that has dropped through the sieve hole of the sieve portion is removed from the metal piece by the magnetic sorting section and discharged from the metal piece discharge port.
Transfer to the combined wind type sieve section. Then, a part of the incombustible material transferred to the combined wind force type sieve section becomes under the sieve and enters the combined compartment for wind force type sieve section, and is discharged from the under sieve discharge port. It is discharged from the discharge port. In the sieving process, the air supplied from the air supply port into the compartment blows upward through the sieving portion, and the air causes the plastic etc. contained in the incombustible material on the combined wind force type sieving portion to rise. The strips are floated and collected by the suction hood. Therefore, the impurities are extremely high in purity. In the invention of claim 2, by forming the sieve portion into a stepped shape, the incombustible material which cannot be sieved and which is placed on the upper sieve portion is dropped in advance by a step to be placed on the lower sieve portion, and the lower sieve It can be screened with certainty. According to the third aspect of the present invention, by changing the air supply amount from each air supply port, the wastes are sorted and collected from each suction hood by type. In the invention of claim 4, the incombustibles can be further classified and sorted by type (size) by making the sieve holes of the perforated plate of the combined wind type sieve section different sizes.

[0010]

1 is a schematic front view showing a sorting apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic side view thereof. In both figures, reference numeral 1 denotes a sorting device as a box-type vibrating screen for combined use of wind power. This sorting device 1 has a waste supply port 2 at one upper end and a discharge port 3 at the other lower end and is substantially horizontal. A horizontally long box-shaped hollow main body 4 and a multi-hole structure in which the height direction inside the main body is vertically arranged in two stages, and the waste is supplied from the supply port 2 to the discharge port 3 side while being laid down substantially horizontally on the upper side. Member 5
1, a magnetic sorting part 17 and a wind force combined type sieve part 18 which are provided adjacent to each other in the front-rear direction (left and right in the drawing) on the lower side of the main body 4, and the main body 4 is vibrated in an oblique direction shown by an arrow A in FIG. And vibrating means 6. The main body 4 is supported by a rocking lever 10 obliquely installed via a lower end bracket 4a and a spring 11 arranged at a right angle to the lever 10 and installed on a machine base 9. The machine base 9 is mounted on a base 7. It is installed via a spring 8. The vibrating means 6 is composed of a vibrating portion 13 provided between the main body 4 and the support base 12 of the machine base 9 and a motor 14 provided on the support base 12. It goes without saying that the installation mechanism of the main body 4 and the vibrating means 6 are merely examples, and may be replaced with other similar mechanisms.

The porous member 5 is formed with a sieve portion 5a having a large number of sieve holes 5b in the supply port 2 side thereof, and has a large number of wind selection holes 5f in the discharge port 3 side thereof. Wind selection section 5c
Is formed. As shown in FIGS. 3 (A) and 3 (B), a plurality of sieve portions 5a are superposed on both side plates 51c at predetermined intervals in the conveying direction of the waste and are slanted in the conveying direction. It is formed by bending plates (sloping plates) 51a having a substantially V-shaped cross section, and the sieve holes 5b are formed between the bending plates 51a. In this example, the upper side of the bent plate 51a is formed into a comb tooth portion 51b,
A plurality of sieve auxiliary holes 51b 'communicating with the sieve holes 5b are also formed in 51b in the direction perpendicular to the waste conveying direction. Sieve auxiliary hole
51b 'is formed in a staggered manner between the adjacent bent plates 51a. Reference numeral 51e is a flat plate that is provided adjacent to the most downstream bent plate 51a and on the downstream side of the bent plate 51a and constitutes the sieve portion 5a together with the bent plate 51a. Further, the wind selecting portion 5c is formed of a flat plate 5d which is entirely horizontal as shown in FIGS.
Recesses 5e recessed in the surface of the flat plate larger than the thickness of the flat plate
Are integrally formed in a plurality of rows in a zigzag pattern in series in the same direction at predetermined intervals, and the side walls facing each other on the longitudinal sides of the recesses (conveyance of wastes in the recesses 5e shown in FIG. 4). The wind selection hole 5f is provided in the side wall (which is substantially parallel to the direction B). Side walls facing each other on the shorter side of the recess 5e are formed as inclined walls 5g toward the bottom wall. The inclined wall 5g is used in this manner to prevent waste having a low specific gravity from being caught in the recess 5e. Reference numeral 5h is a control weir provided at the end of the wind selection unit 5c on the side of the discharge port 3.

Reference numeral 15 is a compartment for the wind-selecting section formed below the wind-selecting section 5c. The partitioning chamber 15 for the wind separation section is a front partitioning chamber 15a that faces the suction hood 25a on the supply port side by the partition wall 33.
And a rear compartment facing the suction hood 25b on the outlet side
15b, and two compartments 15a and 15b are provided with air supply ports 16a and 16b, respectively. The blower 21 is connected to the air supply ports 16a and 16b by the pipes 22a and 22 respectively.
The air from the blower 21 can be supplied to the front and rear compartments 15a and 15b through the adjusting valves 23a and 23b. In this example, the air passing speed through the wind selecting hole 5f of the wind selecting portion 5c is set to about 0.5 to 50 m / sec. Further, 24 is an exhaust port provided on the upper wall of the main body 4 so as to face the wind selecting section 5c, and suction hoods 25a and 25b having a suction port 26 having a flared end are fitted into the exhaust port 24,
The upper part is supported by a pedestal 27 which is fixed to the outside of the apparatus almost horizontally. Reference numeral 28 denotes a flexible tube provided above the exhaust port 24. In addition, the suction hoods 25a and 25b are provided with collectors such as cyclones via conduits 29a and 29b, respectively.
30a and 30b are connected to each other, and both the collectors 30a and 30b are connected to the exhaust fan 31. 32a and 32b are control valves.

The above-mentioned magnetic sorting section 17 is arranged below the sieve section 5a, and is composed of an inclined wall 17a inclined toward the discharge port 3 side and a magnetic separator 17b. An exit 17c is provided. The combined wind type sieve section 18 is the wind selection section 5
A large number of sieve holes 18b are formed in the perforated plate 18a, and the lower portion of the sieve holes is formed in the compartment 19 for the combined wind type sieve section. 18c is a sieve discharge port. An air supply port 19a is provided in the compartment 19, and a blower 21 is connected to the air supply port 19a via a pipe 22c so that the air from the blower 21 can be supplied to the compartment 19 via a regulating valve 23c. Has become. 19b is a sieve outlet. In this example, the velocity of air passing through the sieve holes 18b of the combined wind type sieve section 18 is about 0.
It is set to 5 to 50 m / sec. 20 is a suction hood provided above the perforated plate 18a, and has a suction port 20a in the lower portion. A collector 30c such as a cyclone and an exhauster 31 are connected to the suction hood 20 via a conduit 29c. 32c is a control valve.

The operation of the above embodiment will be described. After crushing construction waste (or general waste) by a waste crusher (not shown), it is directly conveyed by a conveyer conveyor or the like and fed into the main body 4 through the supply port 2, while the air from the blower 21 is connected to the pipe 22a. , 22b from the air supply ports 16a, 16b to the front compartment 15a and the rear compartment 15b of the compartment 15 for the air-selection section, and the air supply port 19a via the pipe 22c for the combined wind force type sieve section. Supply into the compartment 19. The waste thus thrown is conveyed to the discharge port 3 side while being vibrated by the vibration of the vibrating means 6, that is, the vibration of the vibrating portion 13 by the activation of the motor 14, on the porous member 5, and first, among the waste, An incombustible material consisting of concrete, pottery, and glass fragments falls through the sieve hole 5b (sieve auxiliary hole 51b ').
In this case, the product is divided into an oversize product and an undersize product by a simple vibration action. Next, the relatively large waste on the sieve that has not passed through the sieve hole 5b (sieve auxiliary hole 51b ') is removed by the porous member 5.
Is further conveyed to the discharge port 3 side on the wind selecting unit 5c. Here, in this relatively large waste, particularly long and slender ones such as wood pieces, partially mixed wires, and rubber pieces tend to get caught in the sieve holes 5b (sieve auxiliary holes 51b '), but there are a plurality of sieve portions 5a. Since the bent plates 51c of No. 1 are overlapped with each other, the catching on the sieve hole 5b (sieve auxiliary hole 51b ') is greatly reduced and sent to the wind selecting section 5c, which hardly causes clogging. .

The air in the front compartment 15a and the rear compartment 15b of the compartment 15 for the wind selector on the wind selector 5c is shown in FIG. 5 (C).
As shown in FIG. 5, almost the same amount of air is ejected from the air-selecting holes 5f that face each other into the recess 5e, and after the collision and merging in the recess 5e, the upper portion,
That is, by being jetted out at a substantially right angle to the surface of the flat plate 5d, the jetted air causes the waste flowing down on the surface of the flat plate 5d to have a small specific gravity and a light weight to be levitated upward. Here, the adjustment valves 23a, 23
Adjust b to different degrees of opening. For example, the amount of air supplied to the front compartment 15a is reduced and the amount of air supplied to the rear compartment 15b is increased. The adjusting valves 32a and 32b are also adjusted according to the air supply amount. Further, the opening degree is set so as to suck an amount commensurate with the amount of blown air. As a result, the floated lightweight waste, that is, the lightweight plastics, is sucked into the suction hood 25a from the suction port 26 together with the air by the air blower 31, collected in the collector 30a via the conduit 29a, and the papers are collected. Is a suction hood together with air by the air blower 31
It is sucked from 26 into the suction hood 25b, and is sorted and collected by the collector 30b via the conduit 29b. The recovered lightweight plastics are mainly reduced in volume or partially incinerated, and the papers are incinerated as combustibles.

Relatively heavy waste that does not float, mainly wood pieces, partially mixed wires, and rubber pieces are temporarily retained on the wind selection section 5c by the control weir 5h. Then, the suspended wood chips, etc., get over the control weir 5h, fall, and enter the discharge port 3 to be collected. As described above, since the air blown out from the wind selection hole 5f is blown out at a substantially right angle to the surface direction of the flat plate 5d, even a light-weight waste is not flowed down on the flat plate 5d and is floated from the air. Thus, the wind selection holes 5f are hardly clogged. In addition, the wind selection unit 5
Even if a piece of wood or a wire is sent to c, the wind-selection hole 5f in the wind-selection portion 5c is provided on the opposite side walls of the recess 5e that are substantially parallel to the waste-conveying direction and prevents the flow of waste. There is no need to get caught up in this. Further, the wind selecting hole 5f of the wind selecting portion 5c has an elongated slit shape when seen in a plan view, and waste hardly falls from the wind selecting hole 5f.

During this sorting operation, air from the wind selection hole 5f of the recess 5e is jetted from the lateral direction with respect to the flow of the waste, which hardly causes a resistance to the flow of the waste. It is possible to effectively give buoyancy, and it is possible to reliably and reliably sort waste even if there is no great difference in specific gravity. In addition, the recess 5e is not provided with any holes other than the wind selecting hole 5f, and the side wall formed on the inclined wall 5g without the wind selecting hole 5f becomes a part of the guide portion for the waste material to flow down. It does not cause clogging of waste and accumulation of waste due to clogging. Furthermore, since there is no protruding portion on the surface of the flat plate 5d, the flow of waste is extremely smooth. In this way, the waste is reliably sorted into lightweight plastics, papers, and wood chips by the synergistic action of the vibration of the porous member 5, the air ejected from the wind selecting unit 5c, and the suction wind force.

The incombustible material that has fallen from the sieve hole 5b is transferred to the magnetic separator 17b through the magnetic sorting section 17, that is, the inclined plate 17a, and the small particles of metal such as nails that have entered the incombustible material are magnetically removed. The non-combustible material discharged from the metal piece discharge port 17c and having the metal removed is transferred onto the perforated plate 18a of the combined wind type sieve section 18. The incombustibles on the perforated plate 18a flow down while vibrating by vibrating action, part of which falls through the sieve 18b into the compartment 19 and is discharged from the undersize discharge port 19b and the sieve. The incombustibles that do not pass through the holes 18b are discharged from the sieved material discharge port 18c while moving on the perforated plate 18a. On the other hand, during the sieving process, the air from the blower 21 is supplied from the pipe 22c to the compartment 19 through the air supply port 19a, and the perforated plate 18a.
The powder is blown upward through the sieve holes 18b, and the blown air floats the small and light specific gravity (plastic pieces, thin wood pieces) mixed in the incombustible material on the perforated plate 18. Then, the floated and lightweight one is sucked into the suction hood 20 through the suction port 20a by the air blower 31, and is further collected by the collector 30c through the conduit 29c. The recovered incombustibles are of high purity that do not contain plastics, and are reused (sand, pebbles) or landfilled.

FIG. 6 shows another embodiment of the sieving portion 5a, in which the sieving portion 5a is formed by a standing wall 51d into two steps of an upper sieving portion 5a and a lower sieving portion 5a. It may have two or more stages. As a result, incombustibles that cannot be sieved because they are placed on the upper sieving portion 5a drop in advance due to the step of the standing wall 51d and are placed on the lower sieving portion 5a, where they are reliably sieved.

7 to 11 show various modifications of the recess formed in the flat plate 5d of the porous member 5. As shown in FIG. The flat plate 5d portion is not shown in FIG.
In the example of FIG. 7, the length of the concave portion 35e in the longitudinal direction is slightly short, and the length in the lateral direction is slightly long, and the inclined wall 35g.
The inclination angle of is slightly larger than that of the concave portion 5 of FIG.
Different from e. 35d is a flat plate, and 35f is a wind selection hole. In the example of FIG. 8, the length of the recess 45e in the longitudinal direction is slightly short and the length in the lateral direction is slightly long, and the opposite side walls on the lateral side are not inclined walls but vertical walls 45g. 5 is different from the recess 5e in FIG. 45d is a flat plate, and 45f is a wind selection hole. The example of FIG. 9 is that the concave portion 55e is slightly longer in the lateral direction and that the side wall and the bottom wall facing each other on the lateral side are formed in a curved wall 55i that is continuous in an arc shape. , Which is different from the recess 5e in FIG. 55d is a flat plate and 55f is a wind selection hole. In the example of FIG. 10, the concave portion 65e is slightly longer in the lateral direction, and the side wall and the bottom wall facing each other on the lateral side are formed in a V-shaped wall 65j that is continuous in a V-shape. 5 differs from the recess 5e in FIG. 65d is a flat plate, and 65f is a wind selection hole.
Recesses 35e, 45e, 55e, 65e of such various modified examples
Is also arranged on the surface of the flat plate 5d in the same manner as in FIG. 3, and the flat plate provided with the recess is attached to the device 1 to form the recess 5
Has the same effect as e.

FIG. 11 shows a further modified example of the recess. The recess 75e formed in the flat plate of this modified example is
As is clear from (A), one side wall (sloping wall 75g) not provided with the wind selecting hole 75f to the other side wall (sloping wall 75g).
It is formed in a divergent shape toward g). When the plane shape of the concave portion 75e is formed in a divergent shape in this manner, the concave portion 75e
Even if waste enters the inside of e, it can flow down smoothly. 75d is a flat plate, and 75f is a wind selection hole.

FIG. 12 shows a modification of the suction hood.
The suction hood 25 has an elongated suction port 26a with a narrowed tip.

FIG. 13 is a schematic front view showing another embodiment of the present invention. In the figure, the perforated plate 18a is the front perforated plate 18a.
a1 and rear perforated plate 18a2, and front perforated plate 18a1
The size of the sieve holes 18b of the rear porous plate 18a1 is smaller than that of the sieve holes 18b of the rear porous plate 18a1. The partition chamber 19 for the combined wind force type sieve unit is a front chamber 19 facing the front porous plate 18a1 by a partition wall 19c.
f and a rear chamber 19g facing the rear porous plate 18a2, 2
The compartments 19f and 19g are provided with air supply ports 19h and 19i, respectively. Each air supply port 19h,
A blower 21 is connected to 19i via pipes 22c and 22d, respectively, so that the air from the blower 21 can be supplied to the front and rear chambers 19f and 19g through the adjusting valves 23c and 23d as in the above embodiment. ing. Reference numeral 19j is an under sieve discharge port.
In addition, the suction hood 20 is provided on the upper part of the perforated plate 18a so as to substantially face the front perforated plate 18a1 and the rear perforated plate 18a2.
(Two in the figure) are provided, and a collector 30c such as a cyclone is connected to each suction hood 20 via conduits 29c and 29d, and is further connected to the collector 30c and the air blower 31. Reference numerals 32c and 32d are control valves. Then, the adjustment valves 23c and 23d are adjusted to a predetermined opening degree to supply predetermined air to the front chamber 19f and the rear chamber 19g, and the adjustment valves 32c and 32d also suck an amount corresponding to the air supply amount. To adjust the opening.

The operation of this embodiment will be described. Perforated plate 18a
Of the incombustibles conveyed to the upper part, small particles of them fall into the compartment 19f from the sieve holes 18b of the front porous plate 18a1,
It is discharged from the incombustibles discharge port 19j, and then a slightly larger small particle is dropped from the sieve hole 18b of the rear porous plate 18a1 into the compartment 19g and discharged from the undersize discharge port 19b.
Further, the incombustibles that do not fall through the sieve holes 18b of the rear porous plate 18a1 are discharged from the sieved material discharge port 18c while moving on the porous plate 18a. On the other hand, during the sieving process, air is supplied from the blower 21 to the compartments 19f and 19g through the pipes 22c and 22d,
It is blown upward through the sieve holes 18b of the front perforated plate 18a1 and the rear perforated plate 18a1 so that a lightweight material (a small piece of plastic, wood, etc.) mixed in the incombustible material is levitated. Then, the floated and lightweight one is sucked into the suction hood 20 through the suction port 20a together with the air by the exhaust fan 31, and is further collected by the collector 30c through the conduits 29c and 29d. The recovered incombustibles are of high purity, sand and pebbles can be reused, and others are landfilled.

In each of the above-described embodiments, the vibration direction with respect to the main body 4 can be swung in a substantially horizontal plane by a known vibration means. Further, although the suction hood 25 is fixed to the gantry 27, it can be adjusted up and down via an appropriate means (not shown), whereby the sorting accuracy can be further improved. In addition, the screen auxiliary hole 51b '
A plurality of folds were formed between the comb-tooth portions 51b on the upper side of the bending plate 51a in the direction perpendicular to the transport direction of the exhaust gas. Needless to say, it is not always necessary to form the sieve auxiliary holes 51b 'as long as the sieve holes 5b are formed between the bent plates 51a that are inclined and overlapped. Further, the discharge port 3 is eliminated, and a discharge chute (not shown) is connected to the end portion of the porous member 5 in a substantially horizontal shape, and the end portion is projected to the outside of the main body 4,
A magnetic separator for metal recovery is installed above this discharge chute,
Further, a sorting machine for aluminum recovery can be arranged below the terminal end of the discharge chute. As a result, metal and aluminum (cans) are selected from the relatively heavy waste that does not float in the wind separation section 5c.
Can be effectively recovered, and most of the remaining can be recovered as a combustible material. Further, the present sorting device can be mounted on a mobile trolley so as to be portable.

[0026]

Since the invention of claim 1 has the above-mentioned structure, the incombustibles among the wastes can be dropped and collected through the sieve holes of the sieve part, and the relatively large ones on the sieve are the wind separation part. In the above, due to the synergistic effect of the vibration action and the air blown out from the wind selection hole and the suction force, it is possible to reliably separate and collect light plastics and papers and relatively heavy wood chips.
During this air sorting operation, the air blown out from the air-selection holes can be blown out almost at right angles to the surface of the flat plate, so even if it is light, it will not flow down on the flat plate and will float from it. It is possible to effectively receive the effect of the selection and improve the selection efficiency, and it is possible to greatly reduce the clogging of the sieve holes and the air selection holes. In addition, since air can be ejected almost at right angles and the buoyancy force on waste can be accurately directed upwards, high precision for waste,
Highly efficient sorting can be maintained. In addition, by removing metal pieces, plastics, and other fine particles from the incombustible material, the incombustible material becomes extremely high in purity and is not only reusable but also effective for landfill. Further, by arranging the magnetic sorting section and the combined wind type sieve section below the porous member, it is possible to make the apparatus compact and reduce the space. Further, since there is no waste in ejecting air, it is not necessary to supply a large amount of air unnecessarily, and therefore, it is possible to realize the downsizing of the air supply equipment and the reduction in power consumption.

According to the second aspect of the present invention, it is possible to further improve the sieving to surely make the incombustibles in the waste be under the sieving. According to the invention of claim 3, the waste can be selectively collected according to the types of lightweight plastics and papers. The invention of claim 4 has an excellent effect that the incombustibles can be reused for each purpose by sieving and collecting the incombustibles by type (size).

[Brief description of drawings]

FIG. 1 is a schematic front view showing a sorting apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the same.

3A and 3B show a sieve portion, FIG. 3A is a plan view thereof, and FIG. 3B is a sectional view taken along line BB of FIG.

FIG. 4 is a plan view of a flat plate of a wind-selecting section with a part thereof omitted.

5A and 5B show recesses provided on the flat plate of the wind-selecting unit, in which FIG. 5A is a plan view thereof, FIG. 5B is a cross-sectional view taken along line BB of FIG.
It is sectional drawing which follows the line CC of (A).

FIG. 6 is a partial cross-sectional view showing another embodiment of the screen section.

FIG. 7 shows a modified example of a recess provided in the flat plate of the wind-selecting section,
(A) is the top view, (B) is sectional drawing which follows the line BB of (A), (C) is sectional drawing which follows the line CC of (A).

FIG. 8 shows a modified example of the concave portion provided on the flat plate of the wind separation unit,
(A) is the top view, (B) is sectional drawing which follows the line BB of (A), (C) is sectional drawing which follows the line CC of (A).

FIG. 9 shows a modified example of the concave portion provided on the flat plate of the wind separation unit,
(A) is the top view, (B) is sectional drawing which follows the line BB of (A), (C) is sectional drawing which follows the line CC of (A).

FIG. 10 shows a modified example of the concave portion provided on the flat plate of the wind separation unit,
(A) is the top view, (B) is sectional drawing which follows the line BB of (A), (C) is sectional drawing which follows the line CC of (A).

11A and 11B show another modification of the concave portion, where FIG. 11A is a plan view thereof, FIG. 11B is a sectional view taken along line BB of FIG. 11A, and FIG.
It is sectional drawing which follows the line CC of (A).

FIG. 12 is a partial cross-sectional view showing a modified example of the suction hood.

FIG. 13 is a schematic front view showing another embodiment of the present invention.

[Explanation of symbols]

1 sorting device 2 supply port 3 discharge port 4 box-type hollow body 5 porous member 5a sieve part 5b sieve hole 5c wind selection part 5d flat plate 5e recess 5f wind selection hole 5g inclined wall 5h control weir 6 vibrating means 15 for wind selection part Compartment chamber 15a Front compartment 15b Rear compartment 16a, 16b Air supply port 17 Magnetic sorting unit 17a Inclined plate 17b Magnetic separator 18 Wind power combined type sieve section 18a Perforated plate 18b Sieve hole 19 Wind force combined type sieve section compartment 19f Front Part room 19g Rear room 20 Suction hood 20a Suction port 25, 25a, 25b
Suction hood 26 Suction port 29a, 29b, 29
c, 29d Conduit 30a, 30b, 30c, 30d Collector 31 Air blower 51a Bending plate (sloping plate) 51b Sieve tooth part 51b 'Sieve auxiliary hole 51c Side plate 51d Standing wall 51e Flat plate

Claims (4)

[Claims] 1. A box-shaped hollow main body having a waste supply port on one end side upper part and a discharge port on the other end side lower part is provided so as to be vibrable by a vibrating means, and the above-mentioned supply is provided in the height direction upper side position in the main body. A porous member that conveys the waste supplied from the mouth to the discharge side while sieving it is installed almost horizontally. This porous member is formed in a sieve part having a large number of sieve holes at the supply port side and approximately the same half. An approximately half of the outlet side is formed into a wind-selecting portion having a large number of wind-selecting holes, and the sieve portions of the sieve portion are inclined at a predetermined interval in the waste-transporting direction and are inclined in the transporting direction. Are provided between the inclined plates that are overlapped with each other, and the air-selection holes of the air-selection unit are provided in the side walls of the recesses formed on the surface of the flat plate that face each other and are substantially parallel to the waste transport direction. In addition, a magnetic sorting section is provided below the sieve section of the porous member, and the magnetic sorting section is provided. A metal piece discharge port is provided in the air-conditioning section, the lower side of the wind-selecting section of the porous member is formed in the air-selecting section compartment, and the air-selecting section compartment is provided with an air supply port. And a wind force combined type sieve part is provided at a position adjacent to the magnetic sorting part, and a sieve upper object discharge port is provided in the wind force combined type sieve part, and the lower side of the wind force combined type sieve part is combined with wind force. Formed in the compartment for the sieve section, provided with an under-sieve discharge port and an air supply port in the compartment, and a suction hood provided above the combined wind type sieve section. Sorter. 2. The waste sorting apparatus according to claim 1, wherein the sieve has a stepped shape. 3. A partition for partitioning the air-selection section into a front compartment and a rear compartment by a partition wall, and air supply ports are provided in both of these compartments so as to correspond to both compartments. 3. A suction hood is provided above each of the parts.
The described waste sorting device. 4. The sieve holes of the combined wind force type sieve section are provided with different sizes in a front porous plate and a rear porous plate which are arranged to form an upper wall of a compartment for combined wind force type sieve section. The lower part of the both porous plates is divided into a front compartment and a rear compartment, and an air supply port and an undersize discharge port are provided in each of the compartments. Or the waste sorting device according to item 3.