JPH07136592A - Waste sorting device - Google Patents

Abstract

PURPOSE:To improve a capacity to sort lightweight materials and improve the sorting accuracy by accelerating dispersion of waste by providing means, such as disposition of a waste supply hopper in a housing enclosing an inclined belt conveyor transporting means and disposition of air blow-off nozzles respectively above and below the hopper. CONSTITUTION:This sorting device 1 is used to sort the waste to plural kinds A to D and is constituted by supporting the inclined part 10a of the belt conveyor type transporting means 10 on a machine bed 20 adjustably in angle of inclination via an expanding and contracting means 25 and likewise mounting the horizontal part 10b on the top end. The upper half part of the transporting means 10 is enclosed by a casing 30 and a passage 31 is formed above the upper perforated belt conveyor 12a. Further, a waste supply hopper 38 is disposed above the intermediate part of the inclined part 30a of the casing 30. The air blow-off nozzles 40, 45 are respectively disposed above and below the hopper. Attraction force is imparted to the upper perforated belt conveyor 12a by the air piping systems 50 including suction means 51 and the suction and sepn. of particles and dustproofing are executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention collects various kinds of waste such as paper scraps, plastic sheets, pieces of cloth, corrugated cardboard, wood chips, plastic bottles, resin solids, stones, earth and sand, refractories, metal scraps or glass scraps. The present invention relates to a device for sorting using specific gravity before landfilling or incineration, and before and after crushing.

[0002]

2. Description of the Related Art Conventionally, as a waste sorting apparatus of this type, there is one shown in FIG. 5 previously filed by the applicant of the present application (see the specification and drawings of Japanese Patent Application No. 2-73252). . This sorting device 100 is provided with an upper waste supply means 11
The inclined portion 120a that is inclined below the zero supply end 110a and whose inclination angle can be adjusted by the telescopic stand 126.
Of the mixed waste A, the upper conveyor belt 121 moving upward (indicated by an arrow X) has a suction means 130 under the upper conveyor belt 121, and the conveyor belt 121 has a large number of through holes. Waste B, which has a large internal specific gravity and is not sucked onto the belt 121, slopes the portion 120a.
The waste C having a small specific gravity is sucked and conveyed on the belt 121 at the inclined portion 120a and moved to the collection position. Also, the inclined portion 120a
Are oscillated by the rotation of the eccentric roller 129.

[0003]

The above-described waste sorting apparatus 100 is well-received because it operates quietly and efficiently separates a large amount of waste. If a large number of various sheets and plates, such as, etc., are mixed together, once they are adsorbed by the suction through holes 121a ... , Lightweight materials such as heat insulating materials and packing having a low specific gravity are not adsorbed and fall down and mix with heavy materials. Also, the waste supply is clumped and not well dispersed. The present invention has been devised in view of the above-mentioned problems of the prior art, and enhances the sorting ability of lightweight materials by blowing up an extremely light sheet or plate of the lightweight materials with an air flow, and the waste to be supplied. A waste sorting apparatus capable of promoting the dispersion on the belt to improve the sorting accuracy, and further having a structure capable of easily separating fine objects in addition to separation of heavy objects and light objects. Is intended to provide.

[0004]

In the waste sorting apparatus of the present invention which achieves the above object, an inclined belt conveyor conveying means in which an upper conveyor belt circulates from bottom to top, and at least the belt conveyor conveying means. A passage is formed above the upper half of the upper conveyor belt, a drop opening for heavy objects is provided at the lower end, a waste supply hopper is provided at the middle, and a light receiving opening is provided at the upper end. It is characterized in that it is composed of a casing and an air blowing nozzle which is provided below the waste hopper of the casing and blows upward through the passage. A second nozzle that blows air in the circumferential direction of the upper conveyor belt is provided in the housing above the waste supply hopper, and a large number of through holes are provided in the belt of the belt conveyor conveying means. Suction means is provided under the. Also,
The upper conveyor belt is configured to be vibrated by a vibrating means such as a rotating eccentric roller, and the belt conveyor conveying means is composed of an inclining means and an upper horizontal portion, and the inclining portion has a horizontally horizontal suction means. Separation means may be provided on each of the portions, and the inclination angle of the inclined portion may be adjustable.

[0005]

In the waste sorting apparatus having the above structure, the upper conveyor belt to which the waste containing a mixture of the light and the heavy is supplied is heavy according to the inclination angle while circling from the bottom to the top. Will slide down or roll down, but lighter ones will be carried upward by the belt. However, extremely light sheets and plates such as paper and film tend to be entangled between heavy objects to prevent slipping or falling, but when blowing up air flow to loosen and disperse the massive waste, The air flow cooperates with the upper conveyor belt to convey it upward in the circumferential direction. When a large number of suction through holes are formed on the conveyor belt, it is possible to prevent the through holes from being widely blocked. The airflow flows through a passage in the housing covering the upper conveyor belt so that the carrying force is maintained. In particular, the air blown out from the air blowing nozzle below the waste supply hopper works to unravel and disperse the lumpy waste supplied from the hopper, and to blow up and sort the sheets and plates upward during dispersion. And do.

The air blown from the second air blowing nozzle on the upper side of the supply hopper serves to convey the selected sheets and plates further upward. If a large number of through holes that cooperate with the suction means are provided in the belt, dust and earth and sand can be separated, and the lightweight objects can be prevented from falling down together with the heavy objects to enhance the sorting ability. When the conveyor belt is vibrated, the dissociation is improved and the sorting accuracy is increased. Furthermore, if the inclination angle can be adjusted, it becomes possible to change the branching point for selecting the lightweight or heavy objects.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the waste sorting apparatus of the present invention will be described in detail below with reference to the accompanying drawings. 1 is a side view of a waste sorting device of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is an explanatory view showing through holes of another conveyor belt, and FIG. 4 is a perspective view of another air blowing nozzle. Is. In FIG. 1 and FIG. 2, a mixture A of various kinds of wastes having different specific gravities, which are roughly crushed to a certain size, is mixed with fine wastes D such as earth and sand, dust, and small metal objects, stones, metal pieces, and glass pieces. Such as heavy waste B and paper, film, sheet, cloth, cardboard,
The device 1 for selecting light waste C such as PET bottles is
The belt conveyor means 10 including the inclined portion 10a and the horizontal portion 10b, and the inclined portion 10a are supported via the expansion / contraction means 25 so that the inclination angle can be adjusted (for example, in the range of 25 ° to 65 ° with respect to the horizontal), and horizontal. A machine base 20 having a portion 10b mounted on its top end, a casing 30 surrounding the upper half of the belt conveyor conveying means 10 and a passage 31 formed above the upper porous conveyor belt 12a, and an inclined portion 30 of the casing 30.
Waste supply hopper 38 provided above the middle part of a
And a first blown-air blowing nozzle 40 and a hopper 3 provided in the housing 30 below the hopper 38.
8 above the second air blowing nozzle 45 provided in the housing 30, and the inclined upper porous conveyor belt 12
It is composed of an air pipe system 50 including a suction means 51 that exerts an adsorption force on a and performs suction separation of fine particles and dustproof action.

The belt conveyer conveying means 10 is a housing 30.
The perforated conveyor belt 12 is stretched around the lower end wheel 11a of the inclined portion 30a, the drive wheel 11b at the rear end portion of the horizontal portion 30b, and the intermediate wheels 11c and 11d at the bent portion. The drive wheel 11 is urged downward by the spring tension means 13a.
b is rotationally driven in the arrow X direction by the inverter motor M1 on the machine base 20. The upper conveyor belt 12a is vibrated by the eccentric roll 14 rotated by the motor M2.
The peripheral speed of the belt 12 can also be changed by the motor M1, and when the speed increases, the selection specific gravity branch point shifts to a more selective one. The through hole h of the belt may be formed in a slit shape (square long hole, oval hole) shown in FIG.

The inclined portion 30a of the housing 30 is a horizontal portion 3a.
0b, which is overlapped with a bent portion, is sealed by a rubber 34, and is supported so as to be rotatable around a support shaft of an upper intermediate wheel 11c pivotally fixed to a bracket 21 of a machine base 20. The inclination angle α is adjusted by 25. If the angle α is large,
Selection points for heavy and light materials move to heavier ones, and smaller ones move to lighter ones, and a wide range of separated objects can be handled. Housing 30
Is a drop opening 31 of the heavy object B at the lower end of the inclined portion 30a.
And the light object C is delivered to the horizontal part 30b at the upper end of the inclined part 30a, and the falling opening 3 of the light object C is provided at the rear end thereof.
Have two. Further, a hopper 38 for receiving the mixed waste A supplied from the quantitative feed conveyor 9 is provided above the inclined portion 30a, and an extremely light object C such as paper or film is provided below.
Has a first blow-up air blowing nozzle 40 that prevents the blow-up of the belt 12 from blocking the through hole h of the belt 12 and disperses the waste A, and a second air blowing nozzle 45 for relay that sends the light substance C to the horizontal portion 30b. Above the hopper 38. In addition to the above-mentioned function, the air blown out from the first nozzle 40 also prevents the light object C from dropping due to the heavy object B, and also functions to separate and blow up. A deflection plate 37 is provided below the hopper 38 to prevent the air blown from the first nozzle 40 from blowing out of the hopper 38.

As the air pipe system 50, a suction box 51 as a suction means which closely adheres to the back side of the upper conveyor belt 12a to generate a suction force in the through hole h of the belt 12a so as to form a closed cycle, and the box 51. A suction pipe 54 that is connected to the suction side of the blower 53 via the dust separation cyclone separator 52 from the rear end of the housing horizontal portion 30b, and the first and second discharge sides of the blower 53 from the discharge side.
A discharge pipe 55 connected to the nozzles 40 and 45 is provided. On the back side of the horizontal portion of the upper conveyor belt 12a, a separation box 56 for forcibly separating the light object C that has been adsorbed and conveyed is provided, and a branch pipe 55 of the discharge pipe 55 is provided.
a is connected. The blower 53 is rotated by the inverter motor M3 so that the air volume and the air pressure can be changed. The air blowing nozzles 40 and 45 may have another structure as shown in FIG.

[0011]

As described above, according to the waste sorting apparatus of the present invention, a large amount of mixed waste is continuously made into a heavy one and a light one by the inclination of the conveyor belt and the blowing air flow. It is possible to separate and sort, and in particular, it is possible to suppress dropping of a lightweight object with a heavy object to a minimum and improve the sorting ability for the lightweight object. Since the sheet is blown up by blowing air, it is possible to prevent the through holes from being blocked in a wide range by the sheet when using a conveyor belt with a large number of through holes for adsorption, and at the same time, the mixed waste supplied. It is possible to enhance the sorting accuracy by promoting the dispersion of the above on the belt. Further, if the inclination angle of the inclined portion of the belt conveyor, the peripheral speed of the conveyor belt, and the air volume and the air pressure from the air blowing nozzle can be changed, it is possible to change the selection branch point between the light object and the heavy object.

[Brief description of drawings]

FIG. 1 is a side view of a waste sorting device of the present invention.

FIG. 2 is a plan view of the device.

FIG. 3 is an explanatory view showing through holes of another conveyor belt.

FIG. 4 is a perspective view of another air blowing nozzle.

FIG. 5 is a side view of a conventional waste sorting device.

[Explanation of symbols]

 1 Waste Sorting Device 10 Belt Conveyor Conveying Means 10a Inclined Part 10b Horizontal Part 12 Conveyor Belt 12a Upper Perforated Conveyor Belt 14 (Eccentric Roll) Exciting Means 30 Enclosure 38 Waste Supply Hopper 40 First Air Blowing Nozzle 45 Second Air Blowing nozzle 50 Air tube system 51 Suction means 56 Separation means A Mixed waste B Heavy waste C Light waste h Belt through hole

Claims (5)

[Claims] 1. An inclined belt conveyor conveying means in which an upper conveyor belt circulates from bottom to top, and at least an upper half of the belt conveyor conveying means is surrounded to form a passage above the upper conveyor belt, and a lower end. A housing having a heavy material drop opening, a waste material supply hopper in the middle, and a light material receiving opening at the upper end, and a waste material supply hopper provided below the housing. A waste sorting device comprising an air blowing nozzle that blows air upward through a passage. 2. The apparatus according to claim 1, wherein the housing is provided with a second nozzle for blowing air in a circumferential direction of the upper conveyor belt above the waste supply hopper. 3. The apparatus according to claim 1, wherein the belt of the belt conveyor conveying means is provided with a large number of through holes, and the suction means is provided below the upper conveyor belt. 4. The apparatus according to claim 1, wherein the upper conveyor belt is vibrated by vibrating means such as a rotary eccentric roller. 5. The belt conveyor conveying means comprises an inclined portion and an upper horizontal portion, suction means is provided at the inclined portion, and separation means is provided at the horizontal portion. 4. The device according to claim 1, wherein the angle is adjustable.