JPH07171503A - Sorting apparatus - Google Patents

Abstract

PURPOSE:To enhance the sorting capacity of lightweight matter by blowing up the extremely light sheet or plate in the lightweight matter by air streams, to enhance a sorting degree by accelerating the dispersion of supplied matter to be sorted on a belt and to alter a sorting point by regulating an angle of inclination. CONSTITUTION:A sorting apparatus is constituted of an inclined belt conveyor feed means 10a wherein an upper conveyor belt 12a moves endlessly from below to above, the supply means 9 for matter to be sorted placed above the intermediate part of the upper conveyor belt 12a, an air blowoff means 40 blowing up air along inclination in the lower part of the supply means and the angle-of- inclination regulating means 25 of the upper belt conveyor feed means 10a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to 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 and glass scraps. The present invention relates to a device for sorting various wastes by using specific gravity before landfilling or incineration, before and after crushing.

[0002]

2. Description of the Related Art Conventionally, as a sorting apparatus of this type, one shown in FIG.
-73252). The sorting device 100 is inclined below the supply end 110a of the upper waste supply means 110, and is moved upward (indicated by an arrow X) in an inclined portion 120a whose inclination angle can be adjusted by a telescopic stand 126.
1 has a suction means 130 below the conveyor belt 1
21 is composed of a rotary belt conveyor 120 having a large number of through holes, and the waste B, which has a large internal specific gravity of the mixed waste A to be sorted and is not sucked onto the belt 121, has an inclined 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]

DISCLOSURE OF THE INVENTION Problem to be Solved by the Invention
Has been well received for its quiet operation and efficient separation of large amounts of waste, etc., but when various sheets and plates such as paper and film are mixed in the waste, it is Once sucked by the suction through holes 121a of the belt 121, the suction force in the separation area is lost, and light weight materials such as plastic containers, gloves, heat insulating materials and packing having a small specific gravity are sucked. Instead, they fall and mix with heavy objects. 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 the lightweight objects by blowing up an extremely light sheet or plate of the lightweight objects with an air flow, and the supplied waste, etc. It is possible to enhance the sorting accuracy by promoting the dispersion of the objects to be sorted on the belt, and to provide a structure that can easily separate fine objects in addition to separating heavy objects and light objects. The purpose is to provide a sorting device.

[0004]

The sorting apparatus of the present invention which achieves the above object comprises an inclined belt conveyor conveying means in which an upper conveyor belt circulates from bottom to top, and an upper part from an intermediate portion of the upper conveyor belt to an upper part. It comprises a selected object supply means provided, an air blowing means for blowing air upward along an inclination at a lower portion of the supply means, and an inclination angle adjusting means of the inclined belt conveyor conveying means. It has a feature. A large number of through holes are provided in the belt of the belt conveyor conveying means, and suction means is provided under the upper conveyor belt. Further, the upper conveyor belt is vibrated by vibrating means such as a rotary eccentric roller. Further, the inclined belt conveyor transport means,
At the upper end, a horizontal portion is extended, and a suction means for sucking air is provided on the inclined portion and a separating means for blowing air is provided on the horizontal portion. Further, the inclined belt conveyor transporting means surrounds at least the upper half thereof to form a path above the upper conveyor belt, has a drop opening for heavy objects at the lower end, and supplies the objects to be sorted to the middle part. The housing is covered with a housing having a hopper and an opening for receiving a light material at the upper end, and the air blowout is provided below the supply hopper of the material to be sorted in the housing.

[0005]

In the sorting device having the above construction, while the upper conveyor belt to which the objects to be sorted in which light and heavy ones are mixed is rotated from bottom to top, the heavy ones slide according to the inclination angle thereof. Although it falls or rolls down, lighter items will be conveyed 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 massive waste, The air flow cooperates with the upper conveyor belt to convey the belt upward in the circumferential direction. Further, if the tilt angle is adjusted, the branching point for selecting a light material and a heavy material will be changed. 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. When the upper half of the belt conveyer conveying means is covered with the casing, the air flow flows through the passage in the housing covering the upper conveyer belt to maintain the conveying force. In particular, the air blown from the air blowing means on the lower side of the supply hopper of the objects to be sorted works to unravel and disperse the lumpy waste supplied from the hopper, and blows up the sheet or plate during the dispersion to sort. Do work. 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 a lightweight object can be prevented from falling down together with a heavy object, so that the sorting ability can be improved.
When the upper conveyor belt is vibrated by the vibrating means, disaggregation of the lumps is improved and the sorting accuracy is increased.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the 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 sorting apparatus of the present invention, FIG. 2 is a plan view of the apparatus, 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. The sorting apparatus 1 for sorting waste shown in FIGS. 1 and 2 is a mixture of various kinds of wastes having different specific gravities which are roughly crushed to a certain size, and a fine waste such as earth and sand, dust, and minute metal substances. Object D and heavy waste B such as stone, metal pieces, and glass pieces, and light waste C such as paper, film, sheet, cloth, cardboard, and PET bottles are selected. And a horizontal portion 10b and a belt conveyor conveying means 10 and an inclined portion 10a capable of adjusting an inclination angle (for example, within a range of 25 ° to 65 ° with respect to the horizontal direction).
A machine base 20 supported via a horizontal portion 10b mounted on the 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 the casing 30. A waste supply hopper 38 is provided above the middle portion of the inclined portion 30a of the nozzle 30, and above the hopper 38 and the first blown-up air blowing nozzle 40 provided in the housing 30 below the hopper 38. An air pipe system 50 including a second air blowing nozzle 45 provided in the housing 30 and a suction means 51 for suctioning air to the inclined upper perforated conveyor belt 12a to suck the air and suction-separating fine particles and dust-proofing.
It consists of and.

The belt conveyer conveying means 10 comprises a housing 30.
A perforated conveyor belt 12 is stretched around the wheel 11a at the lower end of the inclined portion 30a, the drive wheel 11b at the rear end of the horizontal portion 30b, and the intermediate wheels 11c and 11d at the bent portions. The lower end wheel 11a is urged downward by the tension means 13a of the spring and the drive wheel 11
b is rotationally driven in the direction of arrow X by an inverter motor M1 on the machine base 20 so that the rotational speed can be changed. The upper conveyor belt 12a is an eccentric roll 14 rotated by a motor M2.
Being vibrated in. The peripheral speed of the belt 12 is also motor M1.
It is possible to change, and when the speed increases, the selection specific gravity branch point shifts to the one that selects a lot of light items. The through hole h of the belt may be a slit shape (cornered hole, elliptical hole) shown in FIG.

The inclined portion 30a of the housing 30 is a horizontal portion 3a.
0b and a bent portion are overlapped with each other, sealed by a rubber 34, and supported so as to be rotatable around a spindle of an upper intermediate wheel 11c pivotally fixed to a bracket 21 of the machine base 20. The tilt angle α is adjusted by the electric cylinder 25 of the expansion / contraction means. If the angle α is large,
Sorting points for heavy and light items move to heavier ones, and to smaller ones to lighter ones, which allows a wide range of objects to be sorted. Case 3
0 is a drop opening 3 for a heavy object B at the lower end of the inclined portion 30a.
1, the light object C is transferred to the horizontal portion 30b at the upper end of the inclined portion 30a, and the light object C has a drop opening 32 at the rear end thereof. In addition, a hopper 38 for receiving the mixed waste A supplied from the quantitative feed conveyor 9 is provided above the inclined portion 30a, and a very light material C such as paper or film is blown downward to blow through the hole h of the belt 12. Above the hopper-38 with a first blow-up air blow-out nozzle 40 that prevents the waste A from being clogged up and decomposes and disperses the waste A, and a relay second air blow-out nozzle 45 that sends the light substance C to the horizontal portion 30b. Have 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. Hopper-3
A deflecting plate 37 that prevents blown air from the first nozzle 40 from being blown out from the hopper 38 is provided on the lower side of 8.

As the air pipe system 50, a suction box 51 of suction means for closely adhering 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. A suction pipe 54 connected to the suction side of the blower 53 through the dust separating cyclone separator 52 from the rear end portion of the casing horizontal portion 30b and the first and second discharge sides of the blower 53.
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, there is provided a separation box 56 for forcibly separating the light object C that has been adsorbed and conveyed by blowing air, and the branch pipe 55a of the discharge pipe 55 is provided. It 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.

[0010]

As described above, according to the sorting apparatus of the present invention, a large amount of the objects to be sorted, which are mixed with the objects having the specific gravity differences, are continuously heavy by the inclination of the conveyor belt and the blowing air flow. It is possible to separate and sort into light objects, and in particular, it is possible to suppress falling of light objects to heavy objects to a minimum and to enhance sorting ability for light objects. 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 belt of the mixture to be supplied. It is possible to enhance the sorting accuracy by promoting the upward dispersion. Further, the selection branch point can be changed by changing the inclination angle of the inclined portion of the belt conveyor. If the peripheral speed of the conveyor belt and the amount and pressure of air from the air blowing nozzle can be changed, it is possible to variously change the branching point for sorting light and heavy objects. Further, if a vibrating means for vibrating the upper conveyor belt is provided, the lumps are loosened and dispersed, and the sorting accuracy can be improved.
If at least the upper half of the inclined belt conveyor means is covered with a housing, it is advantageous in terms of dustproof and soundproof, and the sustainability of blown air is improved.

[Brief description of drawings]

FIG. 1 is a side view of a sorting apparatus 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]

 DESCRIPTION OF SYMBOLS 1 Sorting apparatus 9 Sorted material supply means 10 Inclined belt conveyor transportation means 12 Conveyor belt 12a Upper porous conveyor belt 14 (Eccentric roll) Excitation means 30 Enclosure 38 Sorted material supply hopper 40 Air blowing means (nozzle) 51 Suction means 56 Separation means A Sorted object B Heavy object C Light object 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, an object-to-be-sorted supplying means provided above an intermediate portion of the upper conveyor belt, and a lower portion of the supplying means. A sorting apparatus comprising: an air blowing unit that blows air upward substantially along an inclination; and an inclination angle adjusting unit of the inclined belt conveyor conveying unit. 2. 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. 3. The apparatus according to claim 1, wherein the upper conveyor belt is vibrated by vibrating means such as a rotary eccentric roller. 4. The inclined belt conveyer conveying means is formed by extending a horizontal portion at an upper end thereof, and the inclined portion is provided with an adsorbing means by air suction, and the horizontal portion is provided with a separating means by air blowing. Claims 1 to 3
The device according to any one of 1. 5. The inclined belt conveyor conveying means surrounds at least the upper half thereof to form a passage above the upper conveyor belt, has a drop opening for heavy objects at the lower end, and has a middle portion to be sorted. The air blow-out means is provided below the supply hopper of the article to be sorted in the case, which is covered with a case having a product supply hopper and an upper end having a light article receiving opening. The described device.