JP3007590B2 - 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 a waste sorting apparatus for sorting wastes containing combustibles and non-combustibles, such as crushed building wastes, oversized refuse, and general refuse, for recycling and landfill disposal. About.

[0002]

2. Description of the Related Art Conventionally, this type of waste sorting apparatus is installed in such a manner that it can be horizontally or tilted so that the carry-out end is high, instead of a vibrating sieve or a trommel which causes clogging of a sieve mesh. A number of star-shaped impellers made of a flexible material are superposed in the axial direction on a number of rotating shafts attached at equal intervals to a rectangular sieve frame. Screens that are attached are known. This screen is used to transport waste that has been roughly crushed to a size of about 100 mm while rotating the impeller while transporting it, sorts the size, and self-cleans deposits on the impeller by sliding the side of the tip. It is.

[0003]

However, in the conventional waste sorting apparatus, when sorting crushed waste in which combustibles and incombustibles are mixed, pieces of paper, plastic, wood, etc. are contained in the sieve product. There is a problem that light combustible materials such as aggregates and incombustible materials such as metals are mixed, making recycling impossible, or sorting equipment in the next process (for example, aluminum sorting machine)
This leads to a decrease in sorting accuracy and the like. Therefore, an object of the present invention is to provide a waste sorting device capable of improving the sorting accuracy of on-screen products.

[0004]

In order to solve the above-mentioned problems, a waste sorting apparatus according to the present invention comprises a rectangular sieve frame which is installed horizontally or tiltably so that a discharge end is high. A large number of star-shaped impellers made of a flexible material are attached to a large number of rotating shafts attached at intervals so that the tips of adjacent rotating shafts overlap in the axial direction, and convey waste. A screen that is sieved while sifting ,
By a guide plate with a spindle-shaped cross section arranged in the upper end
Directs the gap between adjacent rotating shafts from the formed nozzle
An air blow-up device for blowing air upward so as to face the air blow-up device, and an air suction device that is disposed close to and above the screen to face the air blow-up device and sucks air.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1, 2, and 3 are side views showing an example of an embodiment of a waste sorting apparatus according to the present invention, an enlarged side view of a main part with a part cut away, and a line III-III in FIG. FIG. In the figure, reference numeral 1 denotes a screen horizontally supported via a column 2, and this screen 1
Rotating shafts 4 driven to rotate by a motor (not shown) are attached at equal intervals to a rectangular sieve frame 3 in which parallel side frames are appropriately connected by connecting rods, and as shown in FIG. A large number of star-shaped impellers 5 made of a flexible material such as plastic are provided on the rotating shaft 4 in the axial direction (in FIG. Direction). Above the carry-in end of the screen 1 (the right end in FIG. 1), an input chute 6 for supplying waste crushed to a size of about 100 mm is arranged, and the carry-out end (the left end in FIG. 1). Below the screen 1 except for the portion, a sieving chute 7 for guiding the sieving product to a required location is provided.

Also, below the discharge end of the screen 1,
The air supplied from an air supply source (not shown) such as an air blower is blown upward to remove paper pieces, plastic pieces,
The upper end of a blow-up duct 9 of an air blow-up device 8 for separating light combustibles such as wood pieces from non-combustibles such as aggregates and metals is disposed close to the impeller 5. A nozzle 11 for blowing air is formed in the upper end by arranging a guide plate 10 having a spindle-shaped cross section so as to direct a gap between the adjacent rotary shafts 4. on the other hand,
Above the screen 1 facing the upper end of the blow-up duct 9 of the air blow-up device 8, there is an air suction device 12 for sucking the light combustibles separated by the air blow-up device 8 together with air.
The lower end portion 13a of the suction duct 13 is disposed close to the impeller 5, and the impeller 5 depends on the type of waste.
In order to adjust the interval H between the upper and lower sides, the upper and lower sides are provided so as to be movable up and down. The suction duct 13 of the air suction device 12 is connected to the suction side of the above-described air blower or the like. The amount of air suction is equal to or greater than the air blowing amount of the air blowing device 8 to prevent dust generation. It is provided in. 1 to FIG.
Reference numeral 4 denotes a sieving chute for guiding the sieving product to a required location, and is provided so as to cover the discharge end of the screen 1. Reference numeral 15 denotes an upper cover that air-tightly covers the upper portion of the screen 1 so as to surround the lower end of the charging chute 6 and the lower end of the suction duct 13 of the air suction device 12, and 16 denotes the upper end of the chute 7 and the blow-up of the air blowing device 8. It is a lower cover that hermetically covers the lower part of the screen so as to surround the upper end of the duct 9.

In the waste sorting apparatus having the above-described structure, when waste such as crushed building waste and oversized waste is supplied to the screen 1 from the input chute 6, the waste is conveyed by the impeller 5. It is separated into over-sieved and under-sieved products. At the time of this separation, the waste is flipped up and disentangled by the impeller 5, and self-cleaning of the impeller 5 does not cause adhesion or clogging, so that the sieving efficiency is significantly improved. When most of the sieved product from which the sieved product has been sieved is conveyed to the discharge end, the light flammable material is blown up by the air blown up from the nozzle 11 of the blowing duct 9 of the air blowing device 8 and separated from the incombustible material. At the same time, the air is sucked together with the air into the suction duct 13 of the air suction device 12 and conveyed to a required location, for example, a cyclone, while the incombustible material passes through the sieve chute 14 from the discharge end of the screen 1 to the incombustible yard. Is stored in

In the above-described embodiment, a case has been described in which the screen 1 is installed horizontally and waste is separated into three types: a light combustible material and a noncombustible material, which are products under the screen and products on the screen. , But is not limited to this
For example, 30-
It may be installed so that it can be tilted at an angle of 45 °, and a heavy object or the like in the on-screen product flows down from the loading end to be separated into four types.

[0009]

As described above, according to the waste sorting apparatus of the present invention, light combustibles can be separated from the on-screen products at the discharge end of the screen, so that the weight can be reduced.
Not only can the purity of the combustibles be improved, but also the sorting accuracy of the on-screen products can be improved. For this reason, if the waste is construction waste, combustibles are removed from incombustibles (gala and stones),
It can be used as recycled aggregate. In addition, when the waste is general waste, the combustibles are removed from the non-combustibles, and the sorting accuracy of the sorting equipment in the next process such as an aluminum sorter can be improved.
In addition, since the air is effectively blown up, the efficiency of separating lightweight combustibles can be increased.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an embodiment of a waste sorting apparatus according to the present invention.

FIG. 2 is an enlarged side view of a main part in which a part of the waste sorting apparatus of FIG. 1 is broken.

FIG. 3 is a view taken along line III-III in FIG. 2;

FIG. 4 is a side view of a screen impeller in the waste sorting apparatus of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screen 3 Sieve frame 4 Rotating shaft 5 Impeller 6 Input chute 7 Under sieve chute 8 Air blow-up device 10 Guide plate 11 Nozzle 12 Air suction device

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ken Yamaguchi 1780 Kamikono, Yachiyo City, Chiba Prefecture Kawasaki Heavy Industries, Ltd. Yachiyo Plant (56) References JP-A-7-155689 (JP, A) JP-A-8 -155393 (JP, A) JP-A-6-269737 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B07B 1/00-15/00

Claims (1)

(57) [Claims] 1. A plurality of rotating shafts attached at equal intervals to a rectangular sieve frame horizontally or tiltably installed so that a discharge end is raised, and a plurality of star-shaped members made of a flexible material. The impellers are mounted so that the tips of adjacent rotary shafts overlap in the axial direction, and a screen for sieving while transporting waste is provided below and below the discharge end of the screen. , Located in the upper end of the blow-up duct
Nozzle formed by guide plate with spindle-shaped cross section
An air blow device blown up air upwardly to direct the gap between the rotating shaft adjacent al, it is disposed in proximity to face the air blow device above the screen, and an air suction device for sucking air A waste sorting apparatus comprising: