JPH0729088B2 - Waste rotary sorter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary type sorting apparatus for various kinds of waste.

[0002]

2. Description of the Related Art As a conventional waste rotary sorting apparatus, for example, Japanese Patent Publication No. 58-15022 can be cited. As shown in FIG. 5, this product is provided with a crusher a capable of ejecting a crushed crushed product substantially horizontally and an axially horizontal introduction pipe b facing the discharge port of the crusher at the front end. , A cylindrical net cage-shaped selection cylinder d having an inner diameter that forms an annular passage c with a predetermined width between the introduction tube b and the outer periphery thereof, and one connected to the rear end of the selection cylinder and having a back wall as a shield wall , The upper and left and right side walls are mesh walls, and the lower side is open and has a collecting basket e for collecting vinyl pieces and the like, and the inside of the introducing pipe b has a sorting cylinder for metal pieces and stones in the received crushed material. Scraping board f sent inward,
Further, a required number of scraping plates g for sending back the crushed materials are provided on the inner surface of the sorting cylinder d, and a metal piece or the like is provided from the front end of the sorting cylinder d, or a glass crushed piece or the like is provided from the middle portion of the sorting cylinder d. Further, vinyl pieces and the like are collected below the collection basket e, and crushed food waste and other substances suitable for the raw material of compost are collected below the portion from the middle part to the rear end of the sorting cylinder d. Is. That is, from the crushed material, heavy contaminants such as metal pieces and stones, glass or composting material, and three types of paper, vinyl, and cloth are separated and collected.

[0003]

However, since the air generated in the crusher a is introduced together with the crushed material into the rotary drum d through the introduction pipe b, the flow of air in the annular passage c. There is almost no and the length of the circular passage is short. For this reason, some light materials such as vinyl are used alone or in the state of being wrapped around a piece of metal or piece of wood.
After that, the metal pieces and the wood pieces are collected together with the metal pieces, and there is a problem that light materials such as vinyl must be removed again.

The present invention has been made in order to improve the above-mentioned problems, and it is possible to eliminate the mixing of a light material such as vinyl into a metal piece or a wood piece and to further improve the sorting accuracy. The purpose is to provide a sorting device.

[0005]

In order to achieve the above-mentioned object, a rotary type sorting apparatus for waste according to the present invention has a rotary roller, both ends of which are open, and a large number of reverse feeding scraping plates inside. A cylindrical screen equipped with is placed substantially horizontally, and a transport pipe having both ends opened and having a feed screw inside extends inside the cylindrical screen from the front end opening of the cylindrical screen to an appropriate distance. Are arranged concentrically with each other, and the interval is an annular passage, and a plurality of air supply pipes are arranged on the front end opening side of the cylindrical screen toward the annular passage and the transportation pipe. is there.

[0006]

The cylindrical screen is rotated by the driving of the rotary roller, and the crushed material of the waste crushed in the preceding stage is introduced into the transportation pipe through one end opening of the transportation pipe. The crushed material is transferred by the feed screw accompanying the rotation of the transportation pipe, and falls from the other end opening of the transportation pipe to the middle of the length direction of the cylindrical screen. At this time, among the crushed materials, the relatively light combustible materials such as paper and vinyl are blown away by the air flow supplied into the transportation pipe through the air supply pipe.
On the other hand, non-combustible materials such as finely crushed glass pieces and concrete pieces, non-combustible materials such as metal pieces, and relatively heavy combustible materials such as wood pieces are almost free from the influence of the air flow and open at the other end of the transport pipe. Falls directly under the. The crushed material that has fallen as described above is lifted up by the scraping plate for reverse feed of the rotating cylindrical screen, and then slides and falls repeatedly on the scraping plate.

The incombustible material such as finely crushed glass pieces, concrete pieces and the like falls down through the cylindrical screen and does not pass through the cylindrical screen. The combustibles pass through the annular passage while being stirred by the action of the scraping plate, and are discharged from the one end opening. Further, a relatively light combustible material such as paper or vinyl is transferred by the air flowing into the cylindrical screen through the transportation pipe and discharged from the rear end opening. Moreover, some relatively light combustibles that try to get into the annular passage while being wrapped around incombustibles such as metal pieces and relatively heavy combustibles such as wood pieces, will enter the annular passage through the air supply pipe. It is surely blown off by the air blown into. Even if this enters into the annular passage together with the metal piece or the wood piece, it is separated by the unraveling action in the middle and is hardly collected by being mixed with the metal piece or the wood piece. Further, since the other end opening of the transport pipe is located in the middle of the cylindrical screen, the crushed material that has fallen into the cylindrical screen has a relatively long residence time. Stirring is sufficiently performed to enhance the sorting ability according to the type.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a cylindrical screen having a large number of sieve holes 2 on its peripheral wall and openings 3 and 4 whose both ends are open. A large number of scraping plates 5 are provided on the inner peripheral surface of this cylindrical screen. . This scraping plate is attached with a slight inclination with respect to the axis of the cylindrical screen 1 so as to scrape up the crushed material and transfer it to the opening 3 side. Reference numerals 7 and 8 denote rotating rollers installed on the mount 6 by means of shafts 9 and 10, and the cylindrical screen 1 is placed on the rotating rollers. The cylindrical screen 1 can be slightly tilted (several degrees or less) by slightly lowering the rotary roller 8 with respect to the position of the horizontal or rotary roller 7. A transport pipe 11 is concentrically fixed in the cylindrical screen 1 by a support member 12 at a predetermined interval and extends from the front end opening 3 of the cylindrical screen 1 to the middle. This transport pipe has openings 13 and 14 whose both ends are open, and the feed screw 1 is provided on the inner surface.
5 is provided. The space between the inner surface of the cylindrical screen 1 and the transport pipe 11 is the annular passage 16. Reference numeral 17 denotes a wind box arranged outside the opening 3 of the cylindrical screen 1,
A blower (not shown) and a plurality of (six in the illustrated example) air supply pipes 18 and 19 are connected to the air box. The other end of the air supply pipe 18 is directed to the annular passage 16, and the other end of the air supply pipe 19 is directed to the transport pipe 11 via a charging chute described later.

Reference numeral 20 denotes a crushed material charging chute, and the lower end of this chute is positioned in the opening 13 of the transport pipe 11.
This chute can be replaced with a vibrating feeder.
Reference numeral 21 is a motor for one rotation of the cylindrical screen, which rotates the rotating roller 7 through a wheel 22 fixed to the output shaft of the motor, a wheel 23 fixed to the shaft 9, and a chain 24 hung on both wheels 22 and 23. To drive. Reference numeral 25 is a dam plate provided at the opening (discharge port) 4 of the cylindrical screen 1.

Reference numerals 26, 27 and 28 denote covers for covering the openings 3, the sieve holes 2 and the openings 4 of the cylindrical screen 1, 29 is an exhaust port provided in the cover 28, through which dust in the cylindrical screen 1 is removed. It is sucked together with air through a blower (not shown), removed by a dust collector, and then discharged. It should be noted that after the dust removal, the exhaust gas can be introduced into the wind box 17 and circulated. Three
Reference numerals 0 and 31 are dampers for adjusting the air volume.

In the above structure, the motor 21 is started to drive the wheel 22, the chain 24, the wheel 23, and the shaft 9.
Drive the rotating roller via. Along with the rotation of the cylindrical screen 1 driven by the rotating roller 7, the air in the wind box 17 introduced from an air generating source (not shown) is blown into the annular passage 16 and the transport pipe 11 via the air supply pipes 18 and 19. .

In the above operating state, a crushed material of waste such as municipal waste crushed by a crusher (not shown) is supplied into the transport pipe 11 through the charging chute 20. The crushed material in the transport pipe 11 moves in the transport pipe 11 by the rotating feed screw 15 of the transport pipe 11, and falls from the opening 14 to the vicinity of the central portion of the cylindrical screen 1. The crushed material that has fallen into the cylindrical screen 1 is repeatedly scraped up and dropped by the rotation of the cylindrical screen 1 and the action of the scraping plate 5, and while being stirred, moves to the opening 3 side while being stirred.

Of these, finely crushed glass, rubble and concrete are dropped and collected from the sieve hole 2 set to an appropriate mesh. Further, a lump of metal or the like or a piece of wood or the like is reversely transferred by the scraping plate 5 without passing through the sieve hole 2 and is dropped and collected from the opening 3 through the annular passage 16. Further, a relatively light material such as plastic or vinyl is blown off along with the flow of air blown from the annular passage 16 and is discharged beyond the barrier plate 25 of the opening 4.

[0014]

Since the present invention is constructed as described above, it has the following effects. Inside the cylindrical screen, a transport pipe having both ends opened and having a feed screw inside extends from the front end opening of the cylindrical screen to the middle and is arranged concentrically with an appropriate interval, and the interval is an annular passage. In addition, since a plurality of air supply pipes were arranged toward the annular passage and the transportation pipe on the front end opening side of the cylindrical screen, the retention time of the crushed material in the cylindrical screen was compared. The length becomes longer, and the separation by stirring is ensured.

Moreover, the relatively light combustible material is reliably prevented from mixing into the metal pieces and the wood pieces. Therefore, the accuracy of sorting and separating the crushed materials can be significantly improved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a rotary rotary sorting apparatus for waste according to the present invention.

FIG. 2 is a view taken along the line AA of FIG.

FIG. 3 is a view taken along the line BB of FIG.

FIG. 4 is a view taken along the line CC of FIG.

FIG. 5 is a schematic view showing a conventional example.

[Explanation of symbols]

 1 Cylindrical Screen 3,4 Opening of Cylindrical Screen 5 Scraping Plate 7,8 Rotating Roller 11 Transport Pipe 13,14 Transport Pipe Opening 15 Feed Screw 16 Annular Passage 18,19 Air Supply Pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-53-33463 (JP, A) JP-A-54-32868 (JP, A) Actually open 4-131692 (JP, U) Actually open 53- 75579 (JP, U) Actually open 53-75580 (JP, U) Actually open 54-105081 (JP, U) Special public Sho 60-6712 (JP, B2) Special public Sho 56-9386 (JP, B2) Actual public Sho 57-22287 (JP, Y2)

Claims (1)

[Claims] 1. A cylindrical screen having both ends opened and having a large number of reverse feed scraping plates inside is placed substantially horizontally on a rotary roller, and both ends are opened in the cylindrical screen. A transport pipe having a feed screw inside extends from the front end opening of the cylindrical screen to the middle and is concentrically arranged with an appropriate interval, and the interval serves as an annular passage, and the front end opening of the cylindrical screen is provided. On the side, a plurality of air supply pipes are arranged toward the annular passage and the transportation pipe, and a rotary sorting device for wastes.