JP2803996B2 - Waste sorting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sorting general waste and waste used in construction waste disposal facilities, and more particularly to an apparatus suitable for sorting complex wastes having different specific gravities. .

[0002]

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

[0003] In this sorting apparatus, a cylindrical screen having both ends opened and a large number of scraping plates for reverse feeding is placed substantially horizontally on a rotating roller, and both ends are placed inside the screen. A transport pipe having an opening and having a feed screw therein extends from the front end opening of the screen to the middle and is disposed concentrically at an appropriate interval, and this interval is used as an annular passage, and the front end opening of the screen is provided. A plurality of air supply pipes are arranged on the side toward the annular passage and the transport pipe.

[0004]

However, the conventional rotary sorting apparatus has the following problems. B) Of the waste falling from the transport pipe onto the cylindrical screen, relatively heavy wires and wood chips (especially elongated ones) are liable to rub the inside of the screen by the rotating action of the screen and get caught in the sieve holes, and grow once they are caught. Finally, there is a problem of closing the sieve holes. B) Waste such as lightweight plastics (sheets and bags, sponges, heat insulating materials) and paper must be blown off by blowing air into the cylindrical screen. 30% of the total shows the effect
Considering that the air volume is about three times as large as the required air volume, the air volume is large, and an unnecessarily large air flow source must be used. C) Since the screen surface of the screen becomes unnecessarily large, the apparatus becomes large and heavy, and the driving power increases, which is not economical.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to greatly reduce clogging, and furthermore, it is possible to reduce an air flow source as much as possible and to increase the size of the apparatus. It is an object of the present invention to provide a waste sorting apparatus that does not use waste.

[0006]

In order to achieve the above object, according to the present invention, a box-shaped hollow main body having a waste supply port at one upper end and a discharge port at the other lower end is provided. It is provided so that it can vibrate. A porous member that sifts waste supplied from the supply port and conveys the waste to the discharge port side at an upper position in the height direction in the main body is provided substantially horizontally.
In the 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 screening portion having a large number of wind selection holes. A plurality of sieve holes of the sieve portion are provided at predetermined intervals in the direction in which the waste is transported, and are provided between inclined plates which are inclined and superposed in the transport direction. The wind selection holes of the wind selection section are provided on opposing side walls that are substantially parallel to the direction in which the waste is conveyed, which are formed in a large number of concave portions on the surface of the flat plate. A magnetic sorting unit is provided below the sieve portion of the porous member, and a metal piece discharge port is provided in the magnetic sorting unit. The lower part of the air selection part of the porous member is formed in the air selection part compartment, and the air supply port is provided in the air selection part compartment. A wind-assisted sieve section is provided below the compartment for the wind screening section and adjacent to the magnetic separation section, and a sieve discharge port is provided in the wind-assisted screen section. The lower part of the combined use of wind and air is formed in a compartment for combined use of wind and a sieve, and the compartment is provided with an outlet for sifted material and an air supply port. In addition, a suction hood is provided above the sieve section combined with wind power.

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 compartment for the wind selection unit is divided into a front compartment and a rear compartment by a partition wall, and air supply ports are provided in both compartments. I have. Further, suction hoods are provided above the wind selection sections corresponding to both compartments. According to a fourth aspect of the present invention, in the first, second or third aspect, the sieve holes of the combined use of the wind force type sieve portion form the upper wall of the compartment for the combined use of the wind force type and the rear perforated plate and the rear portion. The perforated plates are provided with different sizes. The lower part of both perforated plates is partitioned into a front compartment and a rear compartment, and both compartments are provided with an air supply port and a sieve discharge port, respectively.

[0008]

According to the first aspect of the present invention, the waste put into the main body from the supply port, that is, the waste crushed by the crusher is subjected to the vibration action of the vibration means on the porous member to the discharge port side. Conveyed. During this transportation, the finely crushed incombustibles in the waste fall through the sieve holes of the sieve part. Relatively large materials that do not pass through the sieve holes, that is, lightweight plastics, papers, wood chips, rubber chips, and wires, do not pass through the sieve holes of the sieve portion, and are conveyed to the air filtering portion. In the wind selection section, the air is jetted from the compartment for the wind selection section through the air selection holes and blows out at almost right angles to the surface of the flat plate, and is effectively subjected to the levitation action to be sorted.Lightweight plastics and papers are separated by air. The relatively heavy pieces of wood collected from the floating suction hood move on the wind selection unit and are discharged from the discharge port. At the time of this sorting, a plurality of sieve holes of the sieve portion are provided between the inclined plates arranged in a superposed manner, so that particularly long and thin ones in the waste, for example, the catch of a piece of wood or a wire are greatly reduced. It can be sent to the wind selection unit, and although there is a wind selection hole in the wind selection unit, since this wind selection hole is provided on the opposite side wall that is almost parallel to the waste conveyance direction of the concave part, Wood chips are hardly caught. For this reason, clogging of the sieve holes and the air selection holes is greatly reduced.

Next, the non-combustible material that has fallen through the sieve hole of the sieve part is discharged from the metal piece discharge port by removing the metal piece in the magnetic separation part.
Transfers to the combined sieve section with wind power. A part of the incombustible material transferred to the wind-assisted sieve is sieved and enters the compartment for the wind-assisted sieve, and is discharged from the sieve discharge port. It is discharged from the outlet. In the process of sieving, air supplied into the compartment from the air supply port is blown upward through the sieving section, and this air causes plastics and the like contained in incombustibles on the combined wind and wind sieving section. The strips float and are collected by the suction hood. Therefore, the impurities have extremely high purity. In the invention of claim 2, by making the sieve portion step-like, the incombustible material that cannot be sieved, which is placed on the upper sieve portion, is dropped beforehand by a step and placed on the lower sieve portion, and the lower sieve portion is placed. The sieving can be performed reliably in the department. According to the third aspect of the present invention, wastes are sorted and collected from the respective suction hoods by changing the air supply amounts from the respective air supply ports. According to the fourth aspect of the present invention, by setting the sieve holes of the perforated plate of the sieve portion combined with wind to have different sizes, the incombustibles can be further sieved and collected by type (by size).

[0010]

FIG. 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 sieve combined with wind power. The sorting device 1 is substantially horizontal and has a waste supply port 2 at one upper end and a discharge port 3 at the lower other end. A horizontally long box-shaped hollow main body 4 and a porous body which has two vertical stages in the main body and is provided substantially horizontally on the upper side and conveys waste supplied from the supply port 2 to the discharge port 3 while sifting the waste. Member 5
The main body 4 is vibrated in a diagonal direction indicated by an arrow A in FIG. And vibrating means 6. The main body 4 is supported on a swinging lever 10 obliquely provided via a lower end bracket 4a and a spring 11 disposed in a direction perpendicular to the lever 10, and is installed on the machine base 9; Is installed via a spring 8. The vibrating means 6 includes a vibrating part 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. The installation mechanism of the main body 4 and the vibration means 6 are merely examples, and it goes without saying that other similar mechanisms may be used.

The porous member 5 has a sieve portion 5a having a large number of sieve holes 5b at the supply port 2 side and a large number of air selection holes 5f at the discharge port 3 side. Wind selection section 5c
Is formed. As shown in FIGS. 3 (A) and 3 (B), a plurality of sieve portions 5a are arranged at a predetermined interval in the conveyance direction of the waste through both side plates 51c, and are arranged in an inclined manner in the conveyance direction. A bent plate (inclined plate) 51a having a substantially U-shaped cross section is formed, and a space between the bent plates 51a is formed in the sieve hole 5b. In this example, the upper side of the bent plate 51a is formed in the comb teeth 51b,
A plurality of sieve auxiliary holes 51b 'communicating with the sieve holes 5b are formed in the 51b in a direction perpendicular to the direction in which the waste is conveyed. Sieve auxiliary hole
51b 'is formed alternately between the adjacent bent plates 51a. Reference numeral 51e is a flat plate provided adjacent to and downstream of the most downstream bent plate 51a and constituting the sieve portion 5a together with the bent plate 51a. As shown in FIGS. 4 and 5, a part of the wind selection unit 5c is formed entirely of a horizontal flat plate 5d.
A concave portion 5e which is recessed in the surface of the flat plate more than the thickness of the flat plate.
Are integrally formed in a plurality of rows in series in the same direction at predetermined intervals and in a staggered manner, and opposing side walls (long sides of the recess 5e shown in FIG. A wind selection hole 5f is provided on the side wall substantially parallel to the direction B). Opposite side walls on the short side of the concave portion 5e are formed on the inclined wall 5g toward the bottom wall. The reason why the inclined wall 5g is used in this way is to prevent waste having a low specific gravity from being caught in the recess 5e. Reference numeral 5h denotes a control weir provided at the end of the wind selection unit 5c on the discharge port 3 side.

Reference numeral 15 denotes a compartment for the wind selection unit formed below the wind selection unit 5c. The compartment 15 for the wind selection section is a front compartment 15a opposed to 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 discharge port side
15b, and two compartments 15a and 15b are provided with air supply ports 16a and 16b, respectively. A blower 21 is connected to each of the air supply ports 16a and 16b by pipes 22a and 22, respectively.
b, the air from the blower 21 can be supplied to the front and rear compartments 15a, 15b via the regulating valves 23a, 23b. In this example, the passing speed of the air passing through the wind selection hole 5f of the wind selection unit 5c is set to about 0.5 to 50 m / sec. Reference numeral 24 denotes an exhaust port provided on the upper wall of the main body 4 so as to face the wind selection section 5c. Suction hoods 25a and 25b having a divergent suction port 26 are fitted into the exhaust port 24.
The upper part is supported by a gantry 27 fixed substantially horizontally outside the apparatus. Reference numeral 28 denotes a flexible tube provided above the exhaust port 24. Further, the suction hoods 25a and 25b are connected to conduits 29a and 29b, respectively, through a collector such as a cyclone.
The collectors 30a and 30b are connected, and the collectors 30a and 30b are also connected to the exhaust fan 31. 32a and 32b are adjustment valves.

The magnetic separator 17 is disposed below the sieve 5a and includes an inclined wall 17a inclined toward the discharge port 3 and a magnetic separator 17b. An outlet 17c is provided. Wind combined type sieve section 18 is wind selection section 5
c, a large number of sieve holes 18b are formed in the perforated plate 18a, and the lower part of the sieve holes is formed in the compartment 19 for a sieve section combined with wind power. 18c is a sieve material 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 air from the blower 21 can be supplied to the compartment 19 through an adjustment valve 23c. Has become. Reference numeral 19b is a sieve discharge port. In this example, the passage speed of the air passing through the sieve hole 18b of the combined wind type sieve portion 18 is about 0.
It is set to 5 to 50 m / sec. Reference numeral 20 denotes a suction hood provided above the perforated plate 18a, and has a suction port 20a at a lower portion. The suction hood 20 is connected to a collector 30c such as a cyclone and an exhauster 31 via a conduit 29c. 32c is an adjusting valve.

The operation of the above embodiment will be described. After the construction waste (or general waste) is crushed by a waste crusher (not shown), it is directly conveyed by a conveyor or the like and is introduced into the main body 4 from the supply port 2, while air from the blower 21 is supplied to the pipe 22a. , 22b, the air is supplied from the air supply ports 16a, 16b into the front compartment 15a and the rear compartment 15b of the compartment 15 for the wind selection unit, and from the air supply port 19a, via the pipe 22c, for the wind-powered sieve. It is supplied into the compartment 19. The waste put in by this is conveyed to the discharge port 3 side by vibrating action by the vibration means 6, that is, the oscillation of the vibration part 13 by the activation of the motor 14, on the porous member 5. Non-combustible material consisting of crushed pieces of concrete, pottery, and glass falls through the sieve hole 5b (the sieve auxiliary hole 51b ').
In this case, the material is separated into an upper sieve and a lower sieve by a simple vibration action. Next, the relatively large waste on the sieve that did not pass through the sieve hole 5b (the sieve auxiliary hole 51b ') is
Is transported further on the wind selection section 5c to the discharge port 3 side by the vibration of. Here, in this comparatively large waste, particularly long and narrow ones, for example, wood pieces, partially mixed wire and rubber pieces tend to be caught in the sieve hole 5b (sieve auxiliary hole 51b '). Since the bent plate 51c is superposed and arranged, the catch on the sieve hole 5b (the sieve auxiliary hole 51b ') is greatly reduced and sent to the wind selection unit 5c, and there is almost no clogging. .

Then, the air in the front compartment 15a and the rear compartment 15b of the compartment 15 for the wind selecting section on the wind selecting section 5c is separated from the air in FIG.
Approximately the same amount is ejected from the opposing wind selection holes 5f into the concave portion 5e as shown in FIG.
That is, by being ejected at a right angle to the surface direction of the flat plate 5d, the waste air flowing down the surface of the flat plate 5d has a small specific gravity and a light weight waste material is largely lifted upward by the jet air. Here, the adjusting valves 23a, 23
Adjust b to a different 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 in accordance with the air supply amount. The opening is set so as to suck an amount corresponding to the amount of blown air. As a result, the light-weight waste material, that is, the light-weight plastics, is sucked into the suction hood 25a from the suction port 26 together with the air by the exhaust fan 31 and is collected by the collector 30a via the conduit 29a. Is a suction hood together with air by the exhaust fan 31
It is sucked from the suction hood 25b 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 wire and rubber pieces, is temporarily stopped on the wind selection section 5c by the control dam 5h. Then, the pieces of wood or the like that have been stagnated fall over the control dam 5h, enter the discharge port 3, and are collected. In this manner, the air ejected from the wind selection hole 5f is ejected at a right angle to the surface direction of the flat plate 5d, so that even if the waste is lightweight, it does not flow down on the flat plate 5d and acts as a floating action from the air. Is effectively received, and the air selection hole 5f is hardly clogged. In addition, wind selection section 5
Even if a piece of wood or a wire is sent to c, the wind selection hole 5f in the wind selection unit 5c is provided on the opposite side wall substantially parallel to the waste conveyance direction of the concave portion 5e and obstructs the flow of waste. It will not be caught in this because it does not become. The wind selection hole 5f of the wind selection unit 5c has a long and narrow slit shape when viewed from a plane, and waste hardly falls from the wind selection hole 5f.

At the time of this sorting operation, air from the air selection hole 5f of the concave portion 5e blows out from the lateral direction with respect to the flow of the waste, so that the air does not become a resistance to the flow of the waste. The buoyancy can be given effectively, and even if there is no great difference in the specific gravity of the waste, the waste can be sorted with high accuracy. Further, the recess 5e has no hole other than the wind selection hole 5f, and the side wall formed on the inclined wall 5g without the wind selection hole 5f becomes a part of the guide portion for the flow of the waste, and is formed by the recess 5e. No clogging or stagnation of waste due to clogging. Furthermore, since there is no protrusion on the surface of the flat plate 5d, the flow of waste is extremely smooth. In this way, the waste is reliably separated 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 selection unit 5c, and the suction wind power.

The non-combustible material that has fallen from the sieve hole 5b passes through a magnetic separator 17, that is, a magnetic separator 17b via an inclined plate 17a, where metal pieces such as nails that have entered the non-combustible material are magnetically removed. The incombustible material discharged from the metal piece discharge port 17c and from which the metal has been removed is transferred onto the perforated plate 18a of the sieve unit 18 combined with wind power. In the process of flowing down the non-combustible material on the perforated plate 18a while vibrating by vibrating action, a part of the material falls into the compartment 19 through the sieve portion 18b, and is discharged from the sieved material discharge port 19b. Non-combustible materials that do not pass through the holes 18b are discharged from the sieve discharge port 18c while moving on the perforated plate 18a. On the other hand, during the sieving process, air from the blower 21 is supplied from the pipe 22c to the compartment 19 via the air supply port 19a, and the perforated plate 18a
The air is blown upward through the sieve hole 18b, and the blown air causes the light-weight, small-weight (plastic strip, thin strip) mixed with the incombustible material on the perforated plate 18. The light-weight floated air is sucked into the suction hood 20 from the suction port 20a together with the air by the air blower 31, and further collected by the collector 30c via the conduit 29c. The recovered incombustibles are high in purity without plastics and are reused (sand, pebbles) or landfilled.

FIG. 6 shows another embodiment of the sieve portion 5a, in which the sieve portion 5a is formed in two steps of an upper sieve portion 5a and a lower sieve portion 5a by a standing wall 51d. Or two or more stages. As a result, non-combustible materials that cannot be sieved because they are placed on the upper sieve portion 5a fall prematurely due to the step of the standing wall 51d and are placed on the lower sieve portion 5a, where they are reliably sieved.

FIGS. 7 to 11 show various modifications of the concave portion formed on the flat plate 5d of the porous member 5. FIG. In FIG. 3A, the flat plate 5d is not shown.
The example in FIG. 7 shows that the longitudinal length of the recess 35e is slightly shorter and the lateral length is slightly longer, and that the inclined wall 35g
The point that the inclination angle of
different from e. 35d is a flat plate, and 35f is a wind selection hole. In the example of FIG. 8, the longitudinal length of the recess 45e is slightly shorter and the transverse length is slightly longer, and the opposite side wall on the shorter side is not an inclined wall but a vertical wall 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 length of the concave portion 55e in the short direction is slightly longer, and that the opposite side wall and the bottom wall on the short side are formed in a curved wall 55i in which an arc shape is continued. 5 is different from the recess 5e of FIG. 55d is a flat plate, and 55f is a wind selection hole. In the example of FIG. 10, the point that the length of the concave portion 65e in the short direction is slightly longer, and the side wall and the bottom wall facing each other on the short side are formed in a V-shaped wall 65j in which a substantially V-shape is formed. In that it differs from the recess 5e in FIG. 65d is a flat plate, and 65f is a wind selection hole.
The concave portions 35e, 45e, 55e, 65e of such various modifications.
3 is also arranged on the surface of the flat plate 5d in the same manner as in FIG.
It has the same effect as e.

FIG. 11 shows still another modified example of the concave portion. The concave portion 75e formed on the flat plate of this modified example is
As is clear from (A), one side wall (inclined wall 75g) where the wind selection hole 75f is not provided is connected to the other side wall (inclined wall 75g).
It is formed in a divergent shape toward g). When the planar shape of the concave portion 75e is formed in a divergent shape in this manner, the concave portion 75e is formed.
Even when waste enters 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 end.

FIG. 13 is a schematic front view showing another embodiment of the present invention. In the figure, the perforated plate 18a is
a1 and a rear perforated plate 18a2.
The size of the sieve hole 18b of the rear perforated plate 18a1 is smaller than that of the sieve hole 18b of the rear porous plate 18a1. The compartment 19 for the wind-type combined sieve section is a front chamber 19 opposed to the front perforated plate 18a1 by a partition wall 19c.
f and a rear chamber 19g facing the rear perforated plate 18a2.
The two 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 air from the blower 21 can be supplied to the front and rear chambers 19f and 19g via the regulating valves 23c and 23d in the same manner as in the previous embodiment. ing. 19j is a sieve discharge port.
A 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. Each suction hood 20 is connected to a collector 30c such as a cyclone via conduits 29c and 29d, and further connected to the collector 30c and the blower 31. 32c and 32d are adjustment valves. Then, the adjusting 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 adjusting valves 32c and 32d also suck an amount corresponding to the air supply amount. Adjust the opening as described above.

The operation of this embodiment will be described. Perforated plate 18a
Among the non-combustible materials conveyed above, small ones among them fall from the sieve holes 18b of the front perforated plate 18a1 into the compartment 19f,
The non-combustible material is discharged from the non-combustible material discharge port 19j, and then a small particle having a slightly larger size is dropped from the sieve hole 18b of the rear perforated plate 18a1 into the compartment 19g and discharged from the sieved material discharge port 19b.
Further, non-combustible materials that do not fall from the sieve holes 18b of the rear porous plate 18a1 are discharged from the upper sieve 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 via the pipes 22c and 22d,
It is blown upward through the sieve holes 18b of the front and rear perforated plates 18a1 and 18a1, whereby a lightweight material (a small piece of plastic or wood) mixed in the incombustible material floats. The lifted lightweight material is sucked into the suction hood 20 from the suction port 20a together with the air by the air blower 31, and further collected by the collector 30c via the conduits 29c and 29d. The recovered incombustibles are of high purity, sand and pebbles can be reused, and the rest are landfilled.

In each of the above embodiments, the direction of vibration with respect to the main body 4 can be swirled substantially in a horizontal plane by known vibration means. Further, although the suction hood 25 is fixed to the gantry 27, the suction hood 25 can be adjusted up and down through appropriate means (not shown), thereby further increasing the sorting accuracy. In addition, the sieve auxiliary hole 51b '
Are formed between the comb teeth 51b on the upper side of the bent plate 51a in the direction perpendicular to the direction of transport of the exhaust, but at predetermined intervals in the direction of transport of the waste, a plurality of them are formed in the direction of transport. It goes without saying that such sieve auxiliary holes 51b 'need not necessarily be formed as long as the sieve holes 5b are formed between the bent plates 51a which are arranged in an inclined and overlapped manner. In addition, the discharge port 3 is eliminated, a discharge chute (not shown) is connected to the end of the porous member 5 in a substantially horizontal shape, and the end of the discharge chute is projected outside the main body 4.
A metal separator for metal recovery is arranged above this discharge chute,
Further, a sorting machine for collecting aluminum can be arranged below the end of the discharge chute. As a result, metals and aluminum (cans) can be removed from relatively heavy waste that does not float in the wind selection unit 5c.
Can be effectively recovered, and most of the remaining can be recovered as combustibles. In addition, the present sorting device can be mounted on a mobile trolley to be portable.

[0026]

According to the first aspect of the present invention, the non-combustible waste among the wastes can be dropped and collected through the sieve holes of the sieve part, and the relatively large ones on the sieve can be removed by the wind filter part. Above, by virtue of the synergistic effect of the vibration action, the air ejected from the wind selection hole, and the suction force, it is possible to reliably separate and collect light materials such as lightweight plastics and papers and relatively heavy wood chips.
At the time of this air sorting operation, the air ejected from the wind selection hole can be ejected at almost right angles to the surface direction of the flat plate, so that even a light one does not flow down on the flat plate and floats from the air. Sorting can be performed by effectively receiving the action, and the sorting efficiency can be increased, and the clogging of the sieve holes and the wind selection holes can be greatly reduced. In addition, since air can be spouted almost at right angles and the buoyancy to waste can be accurately directed upward, high precision for waste can be achieved.
High efficiency sorting can be maintained. In addition, the non-combustible material becomes extremely high in purity by removing small pieces such as metal pieces and plastics from the non-combustible material, so that it can be reused and is effective for landfill. In addition, by arranging the magnetic separation unit and the wind-type sieve unit below the porous member, it is possible to reduce the size and space. Further, since there is no waste in the ejection of air, it is not necessary to supply a large amount of air unnecessarily, and therefore, it is possible to realize a reduction in the size and power of the air supply equipment.

According to the second aspect of the present invention, non-combustible substances in the waste can be reliably sieved by further increasing the sieving. According to the third aspect of the present invention, 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 non-combustibles can be reused for each use by sieving and collecting the non-combustibles by type (size).

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a sorting device 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, wherein FIG. 3A is a plan view thereof, and FIG. 3B is a sectional view taken along line BB of FIG. 3A.

FIG. 4 is a partially omitted plan view of a flat plate of a wind selection unit.

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

FIG. 6 is a partial sectional view showing another embodiment of the sieve portion.

FIG. 7 shows a modified example of the concave portion provided in the flat plate of the wind selection unit,
(A) is a plan view, (B) is a cross-sectional view along line BB in (A), and (C) is a cross-sectional view along line CC in (A).

FIG. 8 shows a modified example of the concave portion provided on the flat plate of the wind selection unit,
(A) is a plan view, (B) is a cross-sectional view along line BB in (A), and (C) is a cross-sectional view along line CC in (A).

FIG. 9 shows a modified example of the concave portion provided on the flat plate of the wind selection unit,
(A) is a plan view, (B) is a cross-sectional view along line BB in (A), and (C) is a cross-sectional view along line CC in (A).

FIG. 10 shows a modified example of the concave portion provided in the flat plate of the wind selection unit,
(A) is a plan view, (B) is a cross-sectional view along line BB in (A), and (C) is a cross-sectional view along line CC in (A).

11A and 11B show still another modified example of the concave portion, 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 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]

DESCRIPTION OF SYMBOLS 1 Sorting device 2 Supply port 3 Discharge port 4 Box-shaped hollow main body 5 Porous member 5a Sieve part 5b Sieve hole 5c Air selection part 5d Flat plate 5e Depression 5f Air selection hole 5g Inclined wall 5h Restriction dam 6 Vibration means 15 Air selection part Compartment room 15a Front compartment 15b Rear compartment 16a, 16b Air supply port 17 Magnetic separator 17a Inclined plate 17b Magnetic separator 18 Windscreen type sieve section 18a Perforated plate 18b Sieve hole 19 Windscreen type sieve section 19f Front 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 Exhaust device 51a Bending plate (inclined plate) 51b Sieve tooth 51b 'Sieve auxiliary hole 51c Side plate 51d Standing wall 51e Flat plate

Claims (4)

(57) [Claims] 1. A box-shaped hollow body having a waste supply port at an upper end on one end side and a discharge port at a lower end on the other end side is provided so as to be able to vibrate by vibrating means. A porous member that sieves waste supplied from the port and conveys it to the discharge port while sifting is provided substantially horizontally, and the porous member is formed in a sieve section having a large number of sieve holes at a substantially half of the supply port side. A substantially half portion on the outlet side is formed in a wind screening unit having a large number of wind screening holes, and a plurality of the screening holes of the sieve unit are inclined at a predetermined interval in the conveyance direction of the waste, and are inclined in the conveyance direction. The air selection holes of the air selection section are provided on opposing side walls substantially parallel to the waste conveyance direction of a large number of concave portions formed on the surface of the flat plate. A magnetic separation unit provided below the sieve portion of the porous member; A metal piece discharge port, a lower portion of the air selection section of the porous member is formed in a compartment for the air selection section, and an air supply port is provided in the compartment for the air selection section, and the compartment for the air selection section is provided. Below, a wind-assisted sieve portion is provided at a position adjacent to the magnetic separation portion, and a sieve discharge port is provided in the wind-assisted sieve portion, and a wind force is applied below the wind-assisted sieve portion. A waste sieve characterized by being formed in a compartment for a shaped sieve section, having a sieve discharge port and an air supply port in the compartment, and having a suction hood above the wind-powered sieve section. Sorting device. 2. The waste sorting apparatus according to claim 1, wherein the sieve portion is stepped. 3. A compartment for the wind selection section is divided into a front compartment and a rear compartment by a partition wall, and air supply ports are provided in both compartments, respectively, and the wind compartment corresponding to the compartments is provided. The suction hood is provided above each of the portions.
A waste sorting device as described. 4. The sieve holes of the wind-powered sieve unit are provided with different sizes on the front perforated plate and the rear perforated plate disposed to form the upper wall of the compartment for the wind-powered sieve unit. The lower part of the two perforated plates is partitioned into a front compartment and a rear compartment, and both compartments are provided with an air supply port and a sieve discharge port, respectively. Or the waste sorting apparatus according to 3.