JP2009189957A - Rotor disk type sorting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor screen type sorting machine capable of preventing a long piece of trash such as a cassette tape contained in mixed wastes from tangling in a rotary shaft and winding around it. <P>SOLUTION: A rotor disk type sorting machine 1 is equipped with a rotor screen 2 that is configured to array rotors 5, in which a plurality of rotor disks 8 are coaxially installed with prescribed spaces apart on a rotary shaft 7, in a manner that respective rotor disks 8 of each rotor 5 are alternated with each other. The exposed shaft portions 7c of the rotary shaft 7 exposed between the rotor disks 8 of each rotor 5 are each in contact with a blade 33a of a scraper 30 from below. When a long piece of trash such as a tape contained in mixed wastes W tangles in the exposed shaft portions 7c, it is scraped off from the exposed shaft portions 7c by the scraper 30 and prevented from winding around it. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a mixed dust using a rotor screen having a configuration in which a rotor having a plurality of rotor disks mounted coaxially on a rotating shaft at a predetermined interval is arranged in parallel so that the rotor disks of the rotors enter each other. The present invention relates to a rotor screen type sorter that performs sorting.

  Dust and industrial waste generated during river cleaning are generally mixed dust mixed with wood, plastic, earth and sand, etc., and a sorting mechanism called a rotor screen, disk screen, rotor conveyor, etc. to sort the mixed dust (Hereinafter, these are collectively referred to as “rotor screens”). Patent Documents 1, 2, and 3 disclose such a sorter.

In the rotor screen type sorter, the rotor screen is disposed so as to incline upward in the feeding direction, and mixed dust is put thereon. When mixed dust is thrown onto the rotor screen, first, fine particles such as soil, sand, stone, etc. contained therein fall from the gaps between the rotor disks of the rotor screen and are selected. Solid materials such as PET bottles and empty cans are sorted by sliding down on the opposite side of the feeding direction along the upper surface of the rotor screen which is inclined. The remaining sheets such as plastic bags are sent out along the upper surface of the rotor screen by the rotation of each rotor disk of the rotor screen and sorted.
Japanese Patent No. 3801932 JP 2007-144324 A Japanese Patent No. 4004887

  Here, in each rotor which comprises a rotor screen, the rotor disk is attached at fixed intervals, and the outer peripheral surface of a rotating shaft is exposed between each rotor disk. The exposed shaft portion of the rotating shaft is likely to be wound with long dust during the mixed dust sorting operation. For example, in recent years, discs are widely used as storage media in place of cassette tapes and video tapes, and discarded cassette tapes and video tapes are mixed in the mixed dust. If the tape is entangled with the exposed shaft portion of the rotating shaft, the tape is wound around the rotating shaft. The work of removing the wound tapes is difficult and takes time.

  In view of these points, the present invention proposes a rotor screen type sorter that can efficiently sort mixed dust without causing long dust contained in the mixed dust to wrap around the rotating shaft. There is to do.

  In order to solve the above problems, the rotor screen type sorter of the present invention is characterized by having the following configuration. In addition, although the code | symbol in a parenthesis is in the below-mentioned embodiment, and was attached | subjected in order to make an understanding of this invention easy, it is not intending to limit this invention to the said embodiment. Absent.

  That is, according to the present invention, the rotor (5) in which a plurality of rotor disks (8) are coaxially attached to the rotating shaft (7) at a predetermined interval is used, and each rotor disk (8) of each rotor (5) is A rotor screen (2) having a configuration arranged in parallel with each other in a state of entering each other is inclined so that the front side in the feed direction is on top, and mixed dust (W) is introduced from above the rotor screen (2), The first dust (W1) contained in the mixed dust (W) is dropped from the gap of the rotor disk (8), and the second dust contained in the mixed dust (W) along each rotor (5). In the rotor disk type sorter (1) that sorts the mixed dust (W) by sliding the (W2) and transporting the remaining third dust (W3) by each rotor (5), the mixed dust ( W) Long shape included in Winding prevention for preventing dust from winding around at least the exposed shaft portion (7c) of the rotating shaft (7) located between the adjacent rotor disks (8) in each rotor (5). It has a mechanism (30, 40).

  In the rotor disk type sorter (1) of the present invention, the wrapping prevention mechanism includes at least a cutting edge (33a) capable of contacting the outer peripheral surface of each exposed shaft portion (7c) of the rotating shaft (7). It is a foreign material scraping member (30). The cutting edge (33a) can be brought into contact with not only the exposed shaft portion (7c) but also the side surface portion of the rotor disk (8) on both sides thereof and the outer peripheral surface portion of the rotor disk (8).

  A foreign material scraping member (30) having a structure similar to that of a scraper, doctor blade, etc. used to scrape off foreign matter adhering to the surface of paper machine rolls, steelmaking rolls, photosensitive drums of copying machines, etc. By arranging it, the long dust entangled with the exposed shaft portion (7c) of the rotating shaft (7) can be immediately removed. Moreover, the long dust entangled with the rotor disk (8) can be removed.

  In the rotor disk type sorter (1) of the present invention, the wrapping prevention mechanism is a cover (61, 62, 63) covering each exposed shaft portion (7c) of the rotating shaft (7). It is said. By covering the exposed shaft portion (7c) of the rotating shaft (7) with the cover (61, 62, 63), long dust does not get entangled with the exposed shaft portion (7c).

  As the cover (61), a cover that covers the exposed shaft portion in a rotatable state with respect to each exposed shaft portion (7c) of the rotating shaft (7) can be used. Since the cover (61) does not rotate together with the rotating shaft (7), long dust does not wrap around the outer peripheral surface of the cover (61).

  In the rotor disk type sorter (1) of the present invention, the wrapping prevention mechanism is a blowing mechanism for sending wind so that the long dust does not approach each exposed shaft portion (7c) of the rotating shaft (7). (40). The air blowing mechanism (40) is preferably capable of adjusting at least one of the air volume and the wind speed.

  The said ventilation mechanism (40) shall form the 1st wind (41) which goes upwards through the clearance gap between each rotor (5) from the lower side of the said rotor (5). By blowing up the long dust, it is possible to prevent entanglement with the exposed shaft portion (7c) of the rotating shaft (7).

  The air blowing mechanism (40) forms a second wind (42) from the rear side (upstream side) to the front side (downstream side) in the feeding direction along the upper surface of the rotor screen (2). can do. Since the long dust wound around the exposed shaft portion (7c) of the rotating shaft (7) is generally lightweight, by sending wind along the upper surface of the rotor screen (2), The dust is carried on the wind and falls on the exposed shaft portion (7c) of the rotating shaft (7) and does not get entangled.

  The blower mechanism (40) forms a third wind (43) blown against the mixed dust (W) charged into the rotor screen (2) from above the rotor screen (2). It can be. For example, the third wind (43) can be blown against the mixed dust (W) from the horizontal direction toward the downstream side of the rotor screen (2). When wind (43) is applied in the vicinity of the inlet when the mixed dust (W) is thrown in, the mixed dust (W) is scattered and light and long dust is carried on the wind, and the rotor screen (2) It is hard to fall on the top surface. Accordingly, it is possible to prevent the long dust from being entangled with and wrapped around the exposed shaft portion (7c) of the rotating shaft (7).

  Here, the first, second and third winds (41, 42, 43) can be used in combination. In that case, by adjusting the air volume and the wind speed of each wind, Can be delivered without touching the exposed shaft portion (7c) of the rotating shaft (7).

  Further, as the wrapping prevention mechanism, any one of the foreign material scraping member (30) and the covers (61, 62, 63) and the air blowing mechanism (40) can be used in combination.

  Furthermore, a cover (61, 62, 63) is arranged in the middle part of the rotating shaft (7) in one rotor to prevent the long dust from being wrapped around, and the shaft of the rotating shaft (7) A foreign material scraping member (30) may be disposed at the end portion to prevent the long dust from being wound around. Alternatively, the exposed shaft portion (7c) of the rotating shaft (7) is covered with a cover (61, 62, 63), and long dust particles are entangled in the side surface portion and outer peripheral surface portion of the rotor disk (8). You may make it prevent using a scraping member (30).

  Since the rotor screen type sorter of the present invention is provided with a wrapping prevention mechanism, it is surely prevented that long dust is entangled and wound around the exposed shaft portion between the rotor disks in the rotation shaft of each rotor. It is possible to efficiently sort mixed dust including long dust.

  Hereinafter, an embodiment of a rotor screen type sorter to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is a schematic configuration diagram showing a rotor screen type sorting machine, FIG. 2 is a partial plan view of the rotor screen, and FIG. 3 is a plan view showing one rotor constituting the rotor screen.

  As shown in these drawings, the rotor screen type sorter 1 includes a rotor screen 2, a gantry 3 that supports the rotor screen 2 in an inclined state so that the tip in the feeding direction is up, and a rotor screen. 2 and a cover frame 4 surrounding 2. The rotor screen 2 includes a plurality of rotors 5 arranged in parallel at regular intervals along the feeding direction, and a frame body 6 that supports each rotor 5 in a rotatable state. Each rotor 5 includes a rotating shaft 7 spanning a frame body 6 in a width direction orthogonal to the feed direction, and a plurality of rotor disks 8 fixed to the rotating shaft 7 in a coaxial state at a constant interval. I have. The rotor disks 8 in the adjacent rotors 5 are arranged so as to enter alternately.

  A lower end portion 6a (a rear end portion in the feed direction) of the frame 6 of the rotor screen 2 is supported on the side of the gantry 3 via a hinge while being rotatable in the vertical direction, and an upper end portion 6b of the frame 6 This side is supported by the side of the gantry 3 in a state where it can be moved up and down by the cylinder 10. The tilt angle of the rotor screen 2 can be adjusted by expanding and contracting the cylinder 10.

  A slot 11 formed in the cover frame 4 is located directly above the middle of the rotor screen 2. Dust generated during river cleaning, soil such as industrial waste, sand, stones, plastic bags, long sheets and tapes, plastic bottles, empty cans, timber, etc. were mixed from this inlet 11 The mixed dust W can be thrown in by the external belt conveyor 12. A recovery hopper 13 having a size including the lower surface of the rotor screen 2 is disposed below the rotor screen 2, and fine particles are placed in a predetermined recovery place just below the lower end opening of the recovery hopper 13. The conveyor 14 for conveying to is arranged.

  Further, a recovery hopper 15 for guiding dust falling from here is arranged at the front end portion of the rotor screen 2 in the feeding direction, and a sheet or the like is provided just below the lower end opening of the recovery hopper 15. A conveyor 16 is disposed for transporting to the collection place. Further, a recovery hopper 17 for guiding dust sliding down from here is also arranged at the rear end portion of the rotor screen 2 in the feed direction, and solid matter is placed directly below the lower end opening of the recovery hopper 17. A conveyor 18 is disposed for transporting to a predetermined collection place.

  As can be seen from FIG. 3, the rotor 5 is composed of a rotating shaft 7 and a plurality of rotor disks 8 fixed here in a coaxial state at regular intervals. In this example, the rotary shaft 7 includes a central shaft 7a having a circular cross section and a cylindrical outer shaft 7b having a square cross section covering the central shaft 7a in a coaxial state. The rotor disk 8 is fixed. Both end portions of the central shaft 7 a are rotatably supported by the frame body 6 through bearings 21. The end portions of the respective central shafts 7a project laterally through the bearings 21, and a motor 24 (through a transmission mechanism including a sprocket 22 attached to the projecting portion and a chain 23 spanning the sprocket 22 is provided. As shown in FIG. 2, each rotor 5 rotates synchronously in the same direction.

(Anti-winding mechanism)
The rotor screen type sorter 1 is provided with an anti-winding mechanism for preventing long dust such as a long sheet or tape from getting tangled around the rotating shaft 7 of each rotor 5 and wrapping around it. ing. The wrapping prevention mechanism of this example includes a scraper 30 for scraping foreign matter and a blower mechanism 40.

  Referring to FIG. 3, both ends of the scraper 30 are attached to the frame 6 at the lower position of the rotation shaft 7 of each rotor 5 of the rotor screen 2, and the scraper 30 is arranged vertically along each rotation shaft 7. Has been. The scraper 30 includes a horizontal support pipe 31 having both ends fixed to the frame 6 and a scraping blade 32 having a lower end fixed to the horizontal support pipe 31. In this example, the scraping blade 32 includes four blades, and includes a blade edge portion 33 having a shape corresponding to the contour shape of each rotor disk 8. Each blade edge portion 33 is arranged so as to enter the gap between the rotor disks 8 from below, and these blade edges 33a are exposed to the outer shaft 7b of the rotary shaft 7 located between the rotor disks 8. It is in contact with the corner of the outer peripheral surface of the square outline of the shaft portion 7c.

  Next, referring to FIG. 1, the blower mechanism 40 can form a first wind 41, a second wind 42, and a third wind 43. The first wind 41 is a wind directed upward from the lower side of the rotor screen 2 through the gaps of the rotors 5. The 2nd wind 42 is a wind which goes to the front side (downstream side) from the back side (upstream side) of the feed direction along the upper surface of the rotor screen 2 inclinedly arranged. The third wind 43 is a wind blown against the mixed dust W introduced from the insertion port 11, and is, for example, a horizontal wind directed toward the downstream side of the rotor screen 2. The blower mechanism 40 includes a blower source 44, a first blower duct 45 arranged to guide a part of the wind sent from here to the lower side of the rotor screen 2 to form the first wind 41, and the blower source 44. A part of the air sent out is guided to the downstream end of the rotor screen 2 to form the second air 42, and part of the air sent out from the air source 44 is guided to the inlet. And a third air duct 47 arranged to form the third wind 43. The first to third air ducts 45, 46, 47 are provided with air volume adjusters 45 a, 46 a, 47 a, and the air source 44, air volume adjusters 45 a, 46 a, 47 a are provided on the rotor screen type sorter 1. It is controlled by a control panel 50 that controls driving. The air volume adjustment may be an inverter control type. It is also possible to arrange three blower fans to generate each wind.

(Sorting operation)
Next, the sorting operation of the rotor screen type sorter 1 will be described with reference to FIG. When the mixed dust W is thrown onto the inclined rotor screen 2, the fine particles W 1 such as soil, sand, and stone contained in the mixed dust W are separated from the rotor disk 8 and the rotating shaft 7. It falls down from the gap formed therebetween, is guided to the conveyor 14 via the recovery hopper 13, and is transported to a predetermined recovery location. Light weight dust W2 including sheets such as a plastic bag and a long tape contained in the mixed dust W that has been thrown in is transported to the front end portion by the rotor screen 2 and falls from there to the recovery hopper 15. And is conveyed to a predetermined collection place. The heavy dust W3 including solids such as remaining empty cans and PET bottles in the mixed dust W slides down along the upper surface of the rotor screen 2 and falls from the rear end portion thereof, and is conveyed through the recovery hopper 17. It is guided to 18 and conveyed to a predetermined collection place. In this way, the mixed dust W is sorted into three types of dust W1 to W3 by the rotor screen type sorter 1.

  Here, the light dust W2 may include long dust such as long sheets, for example, a waste cassette tape or a video tape. When such long dust gets entangled with the exposed shaft portion 7c of the rotating shaft 7, it is wound around the exposed shaft portion 7c as the exposed shaft portion 7c rotates, and it takes time for the removing operation. Also, when long dust gets entangled with each rotor disk 8, it takes time to remove it. However, in this example, since the scraper 30 and the air blowing mechanism 40 are provided as the winding preventing mechanism, long dust does not wind around the exposed shaft portion 7c and the rotor disk 8.

  That is, the third wind 43 is blown in the vicinity of the charging port 11 to the mixed dust W charged on the rotor screen 2 from the charging port 11 by the blower mechanism 40, and the dust is scattered. As a result, light sheets and light long dust are separated from other dusts and carried on the wind, and do not easily fall onto the upper surface of the rotor screen 2. For this reason, it is prevented that long dust falls to the exposed shaft portion 7 c of the rotating shaft 7 and gets entangled there, and is wound around the rotating shaft 7 as the rotating shaft 7 rotates. A first wind 41 is blown from the lower side of the rotor screen 2. The first wind 41 also prevents or suppresses light sheets and long dust contained in the charged mixed dust W from falling to a position where they reach the rotating shaft 7. Further, a second wind 42 flows downstream from the rear end (upstream end) of the rotor screen 2 along the upper surface of the rotor screen 2. Therefore, the light sheets and long dust blown up by the first wind 41 are carried downstream by riding on the second wind 42. This also prevents or suppresses the long dust from falling to the position where it reaches the rotating shaft 7.

  Furthermore, each cutting edge 33a of the scraper 30 is in contact with the exposed shaft portion 7c of the rotating shaft 7 from below. Further, the blade tip portion of the scraper 30 can come into contact with the side surface portion and the outer peripheral end surface portion of each rotor disk 8. In spite of the first to third winds 41 to 43, even if heavy long dust falls to the exposed shaft portion 7c and gets entangled with the exposed shaft portion 7c and the rotor disk 8, the scraper 30 The tangled long dust is scraped off the exposed shaft portion 7 c and the rotor disk 8 by the respective blade tips 33 a and the blade tip portion 33. Therefore, it is possible to reliably prevent long dust from being wound around the exposed shaft portion 7 c and the rotor disk 8.

  In addition, by adjusting the air volume of the 1st-3rd winds 41-43, a sheet | seat and elongate dust are efficiently put on a wind toward the downstream along the upper surface of the rotor screen 2. Thus, the sorting operation is efficiently performed, and it is possible to prevent the long dust from being entangled with the rotating shaft 7 and being wound there.

(Another example of wrapping prevention mechanism)
FIG. 5 is an explanatory view showing an example of a wrapping prevention mechanism that can be used in place of the scraper 30. The winding prevention mechanism shown in FIG. 5A is an annular cover 61 that covers and hides the rotating shaft 7. The annular cover 61 is attached so as to cover the exposed shaft portion 7 c in the gap between the rotor disks 8 in each rotor 5. Each annular cover 61 is completely separated from the rotary shaft 7 and covers the exposed shaft portion 7c in a rotatable state. Therefore, even if the rotary shaft 7 rotates during the sorting operation, each annular cover 61 does not rotate. Therefore, even if long dust contacts the annular cover 61, the annular cover 61 is wound around the annular cover 61. There is nothing.

  The winding prevention mechanism shown in FIGS. 5B and 5C is an explanatory view showing two examples of a fixed cover that covers and hides each exposed shaft portion 7c.

  The cover 62 shown in FIG. 5B includes an annular cover body 62a, a vertical support arm 62b that supports the cover body 62a, and a horizontal support pipe 62c to which the lower ends of the vertical support arms 62b are fixed. It has. Both ends of the horizontal support pipe 62c are attached to the frame 6 of the rotor disk type sorter 1.

  The cover 63 shown in FIG. 5C has a semicircular cross-section arc-shaped portion 63a covering the upper half of each exposed shaft portion 7c, and a vertical extending vertically downward from both ends of the arc-shaped portion 63a. Support arms 63b and 63c and a horizontal support plate 63d supporting the vertical support arms 63b and 63c are provided. Both ends of the horizontal support plate 63d are attached to the frame 6 of the rotor disk type sorter 1.

  These fixed covers 62 and 63 can also be used in the case of rotating shafts 7A and 7B having a polygonal cross section, as shown in FIGS. 4 (d) and 4 (e). Similarly, a rotatable cover 61 can also be used for the rotary shafts 7A and 7B having a polygonal cross section.

It is a schematic block diagram which shows the whole structure of a rotor disk type | mold sorter. It is a partial top view of the rotor screen of the sorter of FIG. It is a top view which shows one rotor. It is operation | movement explanatory drawing which shows the selection operation | movement of a rotor disk type | mold sorter. It is explanatory drawing which shows the example of the winding prevention mechanism which can be used instead of a scraper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sorting machine 2 Rotor screen 5 Rotor 7, 7A, 7B Rotating shaft 7a Center shaft 7b Outer shaft 7c Exposed shaft portion 8 Rotor disk 10 Cylinder 11 Input port 12, 14, 16, 18 Conveyor 13, 15, 17 Recovery hopper 21 Bearing 22 Sprocket 23 Chain 30 Scraper 31 Horizontal support pipe 32 Scraping blade 33 Cutting edge portion 33a Cutting edge 40 Blower mechanism 41 First air 42 Second air 43 Third air 44 Air source 45 First air duct 45a, 46a , 47a Air volume adjusting unit 46 Second air duct 47 Third air duct 50 Control panel 61 Annular cover 62 Cover 62a Cover body 62b Vertical support arm 62c Horizontal support pipe 63 Cover 63a Arc-shaped portions 63b, 63c Vertical support arm 63d Horizontal support Plate W Mixed dust W1 Fine dust W2 Light dust W3 Heavy dust

Claims (9)

The rotor (5) in which a plurality of rotor disks (8) are coaxially attached to the rotating shaft (7) at a predetermined interval is parallel to the state in which the rotor disks (8) of the rotors (5) enter each other. The rotor screens (2) arranged in the above are inclined so that the front side in the feed direction is up, and mixed dust (W) is thrown in from above the rotor screen (2), and the rotor disk (8) The first dust (W1) contained in the mixed dust (W) is dropped from the gap between the two dusts (W1), and the second dust (2) contained in the mixed dust (W) is slid down along the rotors 5 and the rest In the rotor disk type sorter (1) for sorting the mixed dust (W) by transporting the third dust (W3) by the rotor (5),
The elongated dust contained in the mixed dust (W) is at least exposed shaft portion (7c) of the rotating shaft (7) located between the adjacent rotor disks (8) in each rotor (5). A rotor disk type sorter (1) having a wrapping prevention mechanism (30, 40) for preventing wrapping around the). In the rotor disk type sorter (1) according to claim 1,
The said winding prevention mechanism is a foreign material scraping member (30) provided with the blade edge | tip (33a) which can contact | abut to the outer peripheral surface of each exposed-shaft part (7c) of the said rotating shaft (7). Disc type sorter (1). In the rotor disk type sorter (1) according to claim 1,
The rotor disk type sorter (1), wherein the winding preventing mechanism is a cover (61, 62, 63) covering each exposed shaft portion (7c) of the rotating shaft (7). In the rotor disk type sorter (1) according to claim 3,
The cover (61) covers the exposed shaft portion (7c) so as to be rotatable with respect to each exposed shaft portion (7c) of the rotating shaft (7). (1). In the rotor disk type sorter (1) according to any one of claims 1 to 4,
The wrapping prevention mechanism is a rotor disk type that is a blower mechanism (40) that sends wind so that the long dust does not approach each exposed shaft portion (7c) of the rotating shaft (7). Sorter (1). In the rotor disk type sorter (1) according to claim 5,
The rotor disk type sorter (1), wherein the blower mechanism (40) is capable of adjusting at least one of an air volume and a wind speed. In the rotor disk type sorter (1) according to claim 5 or 6,
The air blowing mechanism (40) forms a first air (41) that goes upward from the lower side of the rotor (5) through the gaps of the rotors (5). (1). In the rotor disk type sorter (1) according to any one of claims 5 to 7,
The air blowing mechanism (40) forms a second air (42) from the rear side to the front side in the feeding direction along the upper surface of the rotor screen (2). (1). In the rotor disk type sorter (1) according to any one of claims 5 to 8,
The air blowing mechanism (40) forms a third wind (43) blown against the mixed dust (W) charged into the rotor screen (2) from above the rotor screen (2). Characteristic rotor disk type sorter (1).

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