JP3187724B2 - Mixed oversized garbage 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 large-sized waste.

[0002]

2. Description of the Related Art Conventionally used sorting equipment for combustible oversized refuse, non-combustible oversized refuse, and mixed oversized refuse including non-combustible refuse (crushing and sorting apparatus for pretreatment when waste is incinerated in a fluidized bed). Japanese Patent Application Laid-Open No. 1-1938, filed by the applicant of the present invention, may be mentioned. In FIG. 3, oversized garbage transported by a garbage truck or the like is put into a hopper 1, passed through a supply conveyor 2, a feeder 3, and crushed by a crusher 4. The crushed crushed material is transported by a discharge conveyor 5 and a crushed material transport conveyor 6, and a belt-type primary magnetic separator 7 provided at the end of the conveyor 6 collects and removes magnetic substances such as metal pieces. The remaining crushed material is separated into incombustibles and combustibles by a rotary sieve type sorter (Trommel) 8, the incombustibles are collected, and the combustibles are conveyed by a combustible conveyor 9. The magnetic material is collected by a drum-type secondary magnetic separator 10 incorporated in the furnace, and the combustible material from which the magnetic material has been removed is supplied to a fluidized bed incinerator 11.
It is incinerated at. Numerals 12 and 13 denote a magnetic material hopper and a non-combustible material hopper, respectively. Numerals 14, 15 and 16 denote a cyclone, a dust collector and an exhaust fan, respectively.

[0003]

Therefore, when the combustibles are treated in a fluidized bed incinerator, metal pieces may be present in the combustibles. The reason is that most of the magnetic material in the crushed material is collected and removed by the primary magnetic separator 7, but the amount of crushed waste discharged from the crusher 4 is not constant but has a considerable fluctuation range. In addition, since various kinds of garbage are mixed, a belt-type magnetic separator 7 is usually often used as a primary magnetic separator in order to facilitate passage of these crushed materials. When this magnetic separator is installed, a relatively bulky crushed material having a large size of about 100 to 200 m / m (about 300 m / m in the length direction) is often mixed in the crushed material as described above. The distance between the crushed material conveyor 6 and the magnetic separator 7 is set to about 250 m / m to 300 m / m so that these crushed materials are easily transported. With this setting, the magnetic flux density at a position distant from the magnet (on the side of the conveyor) rapidly decreases, and the magnetic adhesion decreases. Therefore, it is conceivable to use a strong magnet.However, if it is too strong, the belt will be damaged at an early stage due to sudden adsorption, so that the recovery rate of magnetic substances is not sufficient, and the unrecovered ones are flammable substances. It will be mixed in. It has been found that many uncollected irons are relatively heavy, for example, wowers, motors such as refrigerators, reinforcing bars, and flat steel members.

The primary magnetic separator 7 recovers and removes most of the magnetic material, but the unrecovered crushed material containing iron is put into a rotary sieve-type separator 8 so that the incombustible material under the sieve and the unburned material on the sieve are removed. The mixture is sieved into combustibles, and the combustibles on the sieve are discharged as oversize together with the remaining irons, and are conveyed by the combustibles conveyor 9;
The magnetic material is reliably magnetized and removed by the rotary sieve type secondary magnetic separator 10 at the end of the combustible material conveyor 9, resulting in high purity. It should be noted that the air is blown from a blower (not shown) near the lower part of the primary sorter 7 and inside the sorter 8 to increase the sorting effect. However, impurities such as a vinyl sheet or cloth are entangled with the magnetic substance. Therefore, it is extremely difficult to separate impurities from the magnetic substance during the fall of the magnetic substance that falls well from the primary magnetic separator 7. Therefore, the magnetic substance is recovered while containing impurities, and the purity of the magnetic substance is reduced accordingly. further,
Impurities entangled with the magnetic substance are sometimes separated in the rotary sieve magnetic separator 8 and separated, but are often collected without being sufficiently separated and attached to the magnetic substance.

On the other hand, although not shown, a pull-type (drum-type) magnetic separator in which magnets are incorporated in the pulley (end side) of the crushed material conveyor 6 instead of the belt-type magnetic separator is used. In this case, a relatively heavy magnetic substance is reliably recovered in this case. However, since the thickness of the refuse layer is not constant due to fluctuations in the amount of crushed refuse, iron pieces in the refuse often remain. In this case, particularly, small pieces of iron pieces existing in the upper layer often remain, and the collection rate is said to be lower than that of the belt type. Further, impurities may be collected in a relatively heavy magnetic substance while being entangled.

According to the present invention, there is provided a mixing device capable of reliably removing magnetic materials, that is, irons, which have been recovered from a primary magnetic separator and eliminating irons remaining in combustible materials and increasing the purity of the magnetic materials. An object of the present invention is to provide a system oversized trash sorting apparatus.

[0007]

In order to achieve the above-mentioned object, the present invention provides a mixed-system bulky waste sorting apparatus, comprising: a rotary drum built in a terminal end portion of a conveyor belt conveyor for crushed mixed-size bulky waste; The magnetic primary material is separated into magnetic substances and impurities by a primary magnetic separator, and the impurities which are partially mixed with the magnetic substances are supplied to a wind-powered type vibration feeder, and the lightweight combustible substances in the impurities which are mixed into the magnetic substances are mixed with the wind-powered type. floated separated by air introduced into the vibration feeder suction collected by the collecting machine, the
Provide a predetermined clearance at the end of the vibrating feeder with wind power.
Magnetic material on the rotating drum of the installed rotating drum type secondary magnetic separator
And the lightweight combustible material is removed.
Drops impurities composed of heavy combustibles from the gap
Thus, both of them are sorted and collected , and the impurities from the rotary drum type primary magnetic separator are supplied to a rotary sieve type sorter to be separated into incombustibles and combustibles and collected. As a result, the combustibles are reliably recovered and removed from the magnetic substances, and the combustibles have a high purity, and the magnetic substances also have a high purity combustibles.

Further, the crushed material of the mixed bulky waste is separated into magnetic substances and impurities by a rotary drum type primary magnetic separator built in the end portion of the conveyor belt conveyor, and impurities mixed with the magnetic substances are mixed. The lightweight combustible material in the impurities mixed into the magnetic material supplied to the wind-powered vibration feeder is floated and separated by air introduced into the wind-powered vibration feeder, suction-collected by a collector, and the magnetic material, The lightweight combustible material is removed and impurities composed of relatively heavy combustible material are separately collected and collected by a rotary drum type secondary magnetic separator arranged at a terminal end of the combined use wind type vibration feeder via a discharge chute. In addition, the impurities from the rotary drum type primary magnetic separator are supplied to a rotary sieve type separator to be sieved and collected as incombustibles and combustibles.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In addition, the same thing as FIG. 3 is demonstrated using the same code | symbol. FIG. 1 is a flow chart showing a typical example of a mixed bulk waste sorting apparatus.
Is a hopper, 2 is a feed conveyor, 3 is a feeder, 4 is a crusher, 5 is a discharge conveyor, 6 is a first (crushed material) conveyor,
Reference numeral 17 denotes a conveyor, 18 denotes a drum-type primary magnetic separator incorporated in the end of the conveyor 17, 8 denotes a rotary sieve-type separator (Trommel), and the size of the sieve mesh is set to about 20 to 30 m / m 2. 19 is a vibrating feeder combined with wind power,
Air is blown in by a blower 21 from the lower part of 0. Reference numeral 22 denotes an exhaust port.
(In the illustrated case, it is a cyclone, but it may be a combination of a cyclone and a dust collector.)
Reference numeral 23 denotes a drum-type secondary magnetic separator, which is disposed at a predetermined interval d between the secondary magnetic separator and the vibrating feeder 19 combined with wind power. 24,
25, 26 and 27 are hoppers. 18 is a conveyor 17
A rotary drum type magnetic separator comprising a rotary drum instead of the pulley on the end side and a rotary magnet incorporated in the rotary drum. Reference numeral 23 denotes a rotary drum type magnetic separator including a rotary drum and a fixed magnet incorporated in the rotary drum.

In the above, the oversized refuse introduced into the hopper 1 is conveyed by the conveyor 2, pushed into the crusher 4 via the feeder 3, crushed by the crusher 4, and the crushed material is conveyed by the conveyor 6 to be conveyed by the conveyor 6. At the end of 17, the magnetic material is demagnetized by the primary magnetic separator 18. At this time, since the primary magnetic separator is of a drum type, magnetic substances (irons) regardless of size are magnetically collected. In particular, massive magnetic substances such as motors and compressors are also reliably adsorbed. The remaining crushed material (impurities) is put into a rotary sieve-type sorter 8, where it is sieved into combustibles on the sieve and incombustibles below the sieve.
The incombustible material below the sieve is stored in the hopper 25. The magnetic material magnetized by the primary magnetic separator 18 is sent to a vibrating feeder 19 combined with wind power. At this time, there are impurities entangled with the magnetic material, that is, light combustibles and some combustibles (impurities) that have entered. In the process of transporting these magnetic and combustible materials by the vibration of the wind power type vibrating feeder 19, the air sent from the blower 21 blows up the perforated plate 20, so that lightweight combustible materials are separated from the magnetic material and float, and the air Is sucked through the exhaust port 22 and collected by the collector 14.
The magnetic material from which the light combustible material has been removed is magnetically collected by a drum-type secondary magnetic separator 23. At this time, impurities that are not adsorbed, that is, relatively heavy combustibles, fall directly through the gap d. Therefore, both the combustible material and the magnetic material have extremely high purity. Furthermore, since a magnetic substance is hardly mixed in impurities supplied to the rotary sieve type sorter, the magnetic substance does not catch on the sieve of the rotary sieve type sorter.

As shown in FIG. 2, a chute 28 may be provided between the vibrating feeder 19 combined with wind power and the secondary magnetic separator 23 of a drum type. In this case, since there is no gap d, the entire amount including the magnetic substance falls onto the drum-type secondary magnetic separator 23, where it is separated into the magnetic substance and the relatively heavy combustible substances as impurities. This method can reduce the capacity of the secondary magnetic separator 23 when relatively heavy combustible materials are small.

[0012]

As described above, the present invention has the following advantages. A crushed material of the mixed bulky garbage is separated into a magnetic material and an impurity by a rotary drum type primary magnetic separator built in an end portion of a conveyor belt conveyor, and the magnetic material and an impurity partially mixed therein are combined with a wind power type vibration feeder. The light combustibles in the impurities supplied to the magnetic material and mixed into the magnetic material are floated and separated by air introduced into the combined use of the wind power type vibration feeder and collected by a collector, and are collected by suction.
A circuit provided with a predetermined gap at the end of the vibrating feeder
Magnetic material is magnetically attached to the rotating drum of a rotating drum type secondary magnetic separator.
And the relatively heavy combustible material has been removed.
By dropping impurities consisting of combustibles from the gap,
Both of them are separated and collected, and the impurities from the rotary drum type primary magnetic separator are supplied to a rotary sieve type sorter to be sieved and collected as incombustibles and combustibles. It is possible to completely remove magnetic substances such as irons remaining therein. Therefore, when combustibles and plastics are incinerated or converted to fuel, troubles such as the blockage of the incombustibles discharge mechanism in the incinerator or the molding machine are drastically reduced, and stable operation becomes possible. In addition, the purity of the magnetic substance that is to be recycled becomes extremely high.

Further, the crushed material of the mixed bulky waste is separated into magnetic substances and impurities by a rotary drum type primary magnetic separator built in the end portion of the conveyor belt conveyor, and impurities mixed partially with the magnetic substances are removed. The lightweight combustible material in the impurities mixed into the magnetic material supplied to the wind-powered vibration feeder is floated and separated by air introduced into the wind-powered vibration feeder, suction-collected by a collector, and the magnetic material, The lightweight combustible material is removed and impurities composed of relatively heavy combustible material are separately collected and collected by a rotary drum type secondary magnetic separator arranged at a terminal end of the combined use wind type vibration feeder via a discharge chute. Since the impurities from the rotary drum type primary magnetic separator are supplied to a rotary sieve type separator to be sieved and collected as incombustibles and combustibles, the purity of combustibles and magnetics is greatly increased. Door can be small the capacity of the secondary magnetic separator is possible.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a mixed-system bulky waste sorting apparatus according to an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing another example of the mixed bulky waste sorting apparatus according to the embodiment of the present invention.

FIG. 3 is an overall configuration diagram showing a conventional example.

[Explanation of symbols]

 Reference Signs List 6 Conveyor 8 Rotating sieve sorter 14 Collector 16 Suction exhauster 17 Conveyor 18 Rotary drum type primary magnetic separator 19 Combined wind power type vibratory feeder 20 Perforated plate 21 Blower 22 Exhaust port 23 Rotary drum type secondary magnetic separator

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI B07B 1/22 B07B 1/22 Z 4/08 4/08 Z B09B 5/00 ZAB B09B 5/00 ZABL (56) References Special JP-A-6-23341 (JP, A) JP-A-8-173908 (JP, A) JP-A-5-7796 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B07B 1 / 00-15/00

Claims (2)

(57) [Claims] 1. A crushed mixed bulk waste is separated into magnetic substances and impurities by a rotary drum type primary magnetic separator built in the end of a conveyor belt conveyor, and impurities mixed with the magnetic substances are partially mixed. The light combustibles in the impurities mixed into the magnetic material supplied to the wind-powered vibration feeder are floated and separated by air introduced into the wind- powered vibration feeder, collected by a collector, and collected by suction. End of vibration feeder
Drum type secondary magnetic separator with a predetermined gap
Magnetic material is magnetically attached to the rotating drum, and the lightweight flammable
To remove impurities consisting of relatively heavy combustibles
Both are sorted and collected by dropping from the gap
And an impurity from the rotary drum type primary magnetic separator is supplied to a rotary sieve type separator to be sieved and collected as incombustibles and combustibles. 2. A crushed material of the mixed bulky waste is separated into a magnetic material and an impurity by a rotary drum type primary magnetic separator built in an end portion of a conveyor belt conveyor, and an impurity partially mixed with the magnetic material is removed. The lightweight combustible material in the impurities mixed into the magnetic material supplied to the wind-powered vibration feeder is floated and separated by air introduced into the wind-powered vibration feeder, suction-collected by a collector, and the magnetic material, The lightweight combustible material is removed and impurities composed of relatively heavy combustible material are separately collected and collected by a rotary drum type secondary magnetic separator arranged at a terminal end of the combined use wind type vibration feeder via a discharge chute. A mixing system for separating large-sized refuse, wherein impurities from the rotary drum-type primary magnetic separator are supplied to a rotary sifter-type separator and sieved and collected as incombustibles and combustibles.