JP3181720U - Disc screen type sorter - Google Patents

Abstract

Disclosed is a disk screen type sorting apparatus that can perform accurate sorting with a simple structure without adjacent slots for separation being continuous through a gap.
First and second rollers forming a transfer surface are first, second and third disks having a same elliptical outer shape, or fourth, fifth and sixth disks. -44c are arranged in order in each axial direction. The second and third disks 38b and 38c are offset by 45 ° and −90 ° around the axis with respect to the first disk 38a. The fifth and sixth disks 44b and 44c are offset by 45 ° and −90 ° around the axis with respect to the fourth disk 44a. The first and second rollers 34 and 36 rotate in conjunction with each other with their rotational positions shifted by 90 °. The outer peripheral end surfaces of the first and fourth disks 38a and 44a, the second and fifth disks 38b and 44b, and the third and sixth disks 38c and 44c are opposed to and close to each other.
[Selection] Figure 4

Description

  The present invention relates to a disc screen type sorting apparatus that sorts mixed waste such as building waste, waste plastic, and glass fragments for recycling or disposal.

  The disc screen type sorting device has mixed wastes of various sizes loaded onto the transfer surface, drops only the waste of a predetermined size or less through the transfer surface, and discharges other large wastes at the discharge end of the transfer surface. It is a device that discharges from.

  Conventionally, as a sorter of this type, for example, as disclosed in Patent Document 1, a plurality of polygonal (for example, hexagonal) discs are fixed to a rotating shaft in a center-through state with a predetermined interval therebetween. There is a sorting apparatus in which a transfer surface is formed by arranging a plurality of the roller members in a horizontal direction and rotatably supporting the roller members on a main body frame. In this sorting processing apparatus, the disks of adjacent roller members are arranged so as to overlap each other with a predetermined gap therebetween, and the rotation shafts of the roller members are rotated in the same direction by a drive mechanism. Then, the waste carried to the upper side of the transfer surface is moved to the discharge end. Therefore, because the hexagonal disc rotates and the waste moves while jumping, even when sticky waste or waste with a high water content is carried in, the waste hardly sticks to the disc or the like. . In addition, a scraper having a predetermined shape is provided at the position of the roller member at the end of the transfer surface to scrape waste from the disk of the roller member.

  Further, as disclosed in Patent Document 2, the first and second shafts each having a plurality of composite discs fixed to the shaft in a state of penetrating the center with a predetermined interval are provided. There is a waste sorting screen in which a transfer surface is formed by horizontally supporting the shafts of the shafts and rotatably supporting the shafts on a main body frame. The composite disk is formed by bringing the main disk and the auxiliary disk into contact with each other in the thickness direction or integrally formed, and the main disk has a triangular, quadrangular, or pentagonal shape with each side swelled in an arch shape. The disc has a circular, elliptical or oval profile that is smaller than the outer periphery of the main disc. The adjacent composite disks of the first and second shafts are arranged so that the outer peripheral end surface of their own main disk faces the outer peripheral end surface of the other auxiliary disk, and the outer peripheral end surface of their own auxiliary disk is the other end. The main disc is disposed so as to face the outer peripheral end surface, and is partially overlapped in the width direction of the waste sorting screen.

  In any of the above-described disc screen type sorting devices, the predetermined number of discs or composite discs that are adjacent to each other and the rotating shaft are surrounded by the predetermined axis so that only a waste having a predetermined size or less falls through the transfer surface. A size gap, that is, a sorting slot is formed, and the discs are provided so as to overlap in the width direction so that the sorting slots do not continue in the width direction of the transfer surface.

JP 2001-334212 A JP 2004-66064 A

  However, in the sorting processing apparatus disclosed in Patent Document 1, when a hexagonal disk or the like is rotating, the gap between the outer peripheral end surface of the disk that partitions adjacent sorting slots and the outer peripheral surface of the rotating shaft depends on the rotational position. There is a timing when a plurality of sorting slots continue through this gap. Consecutive multiple sorting slots are equivalent to an increase in the size of the sorting slot. Therefore, large waste that is not to be sorted passes through the sorting slot and is mixed with the small waste to be sorted. Therefore, there is a problem that the sorting cannot be performed well. Further, there is a possibility that the roller member cannot be rotated due to the waste caught in the gap.

  In the case of the sorting processing apparatus of Patent Document 2, it seems that the above-described problem is less likely to occur by using a composite disk, but the effect is not sufficient. Further, since a main disk and an auxiliary disk having different external shapes are necessary, handling is complicated when manufacturing the apparatus, which is disadvantageous in terms of cost.

  The present invention has been made in view of the above-mentioned background art, and provides a disc screen type sorting device capable of accurately sorting with a simple structure, without the adjacent sorting slots being continuous through a gap. The purpose is to do.

  According to the present invention, a rotating shaft that is rotatably supported by an apparatus main body, a plurality of disks that are provided in a flange shape at predetermined intervals on an outer peripheral surface of the rotating shaft, and the rotating shafts of the plurality of rollers are provided. A drive device that rotates in conjunction with each other in the same direction, a plurality of the rollers are arranged side by side to form a transfer surface on the upper side, and the side of the carry-in end that is one end of the transfer surface in the direction perpendicular to the rotation axis A disc screen type sorting device that discharges the mixed waste that has been thrown into a discharge end that is the other end of the transfer surface, wherein the transfer surface includes first and second rollers that are the rollers. A plurality of the disks having the same elliptical outer shape are arranged at regular intervals in the axial direction, and any one of the plurality of disks is arranged in the axial direction. Next to each other The second roller is provided at a predetermined angle around the axis, and the other plurality of disks having the same elliptical outer shape as the disk of the first roller are arranged at regular intervals in the axial direction. Any one of the discs of the discs adjacent to each other in the axial direction is provided at a predetermined angle around the axis, and the first and second rollers are supported by the apparatus body in parallel with each other, The outer peripheral end faces of the respective disks face each other with a relative 90 ° offset around each rotation axis, and the drive device moves the first and second rollers around the rotation axis, etc. The interval at which the rotary shafts of the first and second rollers are driven so as to rotate in conjunction with each other at a speed is set so that the outer peripheral end surfaces of the respective disks are in contact with each other or slightly separated from each other. Disk This is a screen type sorting device.

The first roller is arranged such that the first, second, and third disks, which are a plurality of the disks having the same elliptical outer shape, repeat the order in the axial direction, and the second disk is the first disk. The third disk is provided with an offset of 90 ° around the axis with respect to the first disk, and the second roller is provided with the disc of the first roller. The fourth, fifth and sixth disks, which are the disks having the same elliptical outer shape, are arranged so as to repeat the order in the axial direction, and the fifth disk is 45 around the axis with respect to the fourth disk. Provided with an offset of 90 °, and the sixth disc is provided with an offset of 90 ° around the axis with respect to the fourth disc,
The first and second rollers are supported by the apparatus main body, and the outer peripheral end surfaces of the first and fourth discs, the outer peripheral end surfaces of the second and fifth discs, and the third and sixth discs. The respective positions of the outer peripheral end faces of the disc are opposed to each other with a relative shift of 90 ° around each rotation axis, and the interval at which the rotation axes of the first and second rollers are supported is the first and second intervals. The outer peripheral end surfaces of the fourth disc, the outer peripheral end surfaces of the second and fifth discs, and the outer peripheral end surfaces of the third and sixth discs are set so as to be close to each other in a range in contact with each other or slightly separated from each other. It is.

  The disk is fixed to the rotation shafts parallel to each other, and the distance between the rotation shafts is approximately equal to ½ of the sum of the major axis and the minor axis of the ellipse, and is provided around the rotation axis. The elliptical outer shape of the disk is formed such that the positions thereof are relatively shifted by 90 ° around the axis and the outer peripheral end surfaces are in contact with each other or slightly spaced apart from each other.

  In the elliptical outer shape of the disk, it is preferable that the bulge of the curve connecting the tip of the long side and the tip of the short side is slightly inside the bulge of the curve in the true ellipse. In addition, it is preferable that a plurality of the disks and a spacer having an outer shape smaller than the disks and defining an interval between the adjacent disks are detachably fixed to the rotating shaft that passes through each central portion. .

  Furthermore, it is preferable that a scraper in which a notch through which a lower part of the plurality of disks of the roller passes is formed below the roller.

  For example, when the first and second rollers rotate in conjunction with each other, the disc screen type sorting device of the present invention is configured such that the outer peripheral end surfaces of the first and fourth discs, the outer peripheral end surfaces of the second and fifth discs, and the third and Each gap where the outer peripheral end faces of the sixth disk face each other can be reduced regardless of the rotational position. Accordingly, since the sorting slots adjacent in the width direction of the transfer surface do not continue, it is possible to reliably prevent large wastes that are not to be sorted from passing through, and perform accurate sorting. In particular, if the outer shape of the disk is a predetermined pseudo-ellipse whose curve bulge is smaller than the true ellipse, the gap between the outer peripheral surfaces of the disks facing each other is made substantially constant and extremely small regardless of the rotational position of the disk. It becomes possible.

1 is a front view of an industrial waste sorting system including an embodiment of a disc screen type sorting device of the present invention. It is a top view of the industrial waste sorting system of FIG. It is a schematic diagram which shows the 1st and 2nd roller in the carry-out end side of the disc screen type | mold sorting apparatus of this embodiment. It is a schematic diagram which shows a mode that the 1st and 2nd roller of the disc screen type | mold sorting apparatus of this embodiment rotates. FIG. 4 is a schematic diagram (a) showing the rotational positions of the first and fourth disks, a schematic diagram (b) showing the rotational positions of the second and fifth disks, and a schematic diagram showing the rotational positions of the third and sixth disks. (C). It is a figure explaining the external shape (a true ellipse and a pseudo ellipse) of the disc screen type sorter of this embodiment. This is a comparison of the state in which the outer peripheral end faces of the first and fourth disks face each other, where the outer shape is a true ellipse (a) and the pseudo ellipse (b). It is AA sectional drawing of FIG.

  Hereinafter, a disc screen type sorting apparatus 10 according to an embodiment of the present invention will be described with reference to the drawings. The sorting device 10 is a device that receives mixed waste mixed with a plurality of types of waste materials, sorts out relatively small waste, and discharges other large waste.

  For example, as shown in FIGS. 1 and 2, the sorting device 10 can be applied to a waste sorting system 12 that receives mixed waste W and separates it into three types of waste W1, W2, and W3. The waste sorting system 12 includes a first conveyor 14 for oblique conveyance, which is a general belt conveyor or the like. The first conveyor 14 transports the waste W thrown into a carry-in end (not shown) of the transfer surface 16 (right side in FIGS. 1 and 2) obliquely upward and discharges it from a discharge end 16a which is the other end.

  Below the discharge end 16a of the first conveyor 14, the sorting device 10 of this embodiment is provided. The sorting device 10 has a plurality of rollers arranged in parallel to form a transfer surface 18 on the upper side. The roller is composed of a rotating shaft and a plurality of disks provided in a flange shape with a predetermined interval between the rotating shafts. Both ends of the rotating shaft are rotatably supported by the apparatus main body 20 and are driven in the same direction by the drive device 22. Rotate in conjunction with. The sorting apparatus 10 moves the mixed waste W, which has been input to the carry-in end 18a side of the transfer surface 18 by the first conveyor 16, by rotating a roller, and discharges it from the discharge end 18b. At this time, the small waste W1 in the mixed waste W falls through a sorting slot formed in a gap with a plurality of rollers and disks, and is collected in the lower stock yard 24. On the other hand, the mixed waste W that cannot pass through the sorting slot moves on the transfer surface 18 and is discharged from the discharge end 18b.

  Below the discharge end 18b of the sorting apparatus 10, a second conveyor 26 for horizontal conveyance, such as a general belt conveyor, is provided. The second conveyor 26 transfers the large mixed waste W that has been thrown by the sorting device 10 to the carry-in end 28a side of the transfer surface 28 to the place where the sorting workers M1 and M2 are present. The sorting worker M1 manually sorts the plastic waste W2 from the large mixed waste W and drops it into the stock yard 30. Further, the sorting worker M2 manually sorts the glass waste W3 and drops it into the stock yard 32.

  In this manner, the waste sorting system 12 performs primary sorting using the sorting device 10 to sort the small waste W1 from the mixed waste W, and then the sorting workers M1 and M2 perform large-scale disposal. It is configured to perform secondary and tertiary sorting by sorting materials by material.

  Next, a detailed configuration of the sorting apparatus 10 will be described. As shown in FIG. 3, the transfer surface 18 of the sorting apparatus 10 is formed by alternately arranging two types of first and second rollers 34 and 36. The first roller 34 is arranged so that the first, second, and third disks 38a, 38b, and 38c, which are disks 38 having the same elliptical outer shape, repeat this order in the axial direction of the rotary shaft 40 (the left side in FIG. 3). The distance between the adjacent disks 38a to 38c is set uniformly by a disc-like spacer 42 sandwiched between them. As shown in FIG. 4, the first, second, and third disks 38a, 38b, 38c are rotated in the direction of rotation (counterclockwise in the drawing) with respect to the first disk 38a (−45 °). 3) The third disk 38c is fixed while being shifted in the rotational direction (−90 °) with respect to the first disk 38a. The second roller 36 has the same configuration as the first roller 34, and the fourth, fifth, and sixth disks 44a, 44b, and 44c, which are disks 44 having the same outer shape as the disk 38, rotate the rotation shaft so as to repeat this order. Arranged in 40 axial directions (from the left side to the right side in FIG. 3), the intervals between the adjacent disks 44a to 44c are uniformly set by the same spacer 42 sandwiched between them. As shown in FIG. 4, the fourth, fifth, and sixth disks 44a, 44b, and 44c are also fixed so that the fifth disk 44b is displaced in the rotational direction (−45 °) with respect to the fourth disk 44a. The disk 44c is fixed while being shifted (−90 °) in the rotational direction with respect to the fourth disk 44a. The first and second rollers 34 and 36 are supported by the apparatus main body 22, and the outer peripheral end surfaces of the first and fourth disks 38a and 44a, and the outer peripheral end surfaces of the second and fifth discs 38b and 44b. The outer peripheral end surfaces 38c and 44c of the third and sixth disks face each other.

  The driving device 22 drives the first and second rollers 34 and 36, and the first and fourth disks 38a and 44a are shifted by 90 ° in the rotation direction of the rotation shaft 40 of each other, and are rotated in conjunction with each other at the same speed. . Accordingly, the second and fifth disks 38b and 44b, and the third and sixth disks 38c and 44c are similarly rotated by 90 ° in the rotation direction of the rotation shafts 40 at the same speed.

  The intervals at which the rotary shafts of the first and second rollers 34 and 36 are supported are set so that the outer peripheral end surfaces of the first and fourth discs 38a and 44a are very close to each other without contacting each other. That is, the center-to-center distance of the rotating shaft 40 is substantially equal to the sum of the major axis and minor axis of the ellipse of the first and fourth disks 38a, 44a. For example, when the first and second rollers 34 and 36 are at the rotational positions shown in FIG. 4, the positional relationship between the outer peripheral end surfaces of the first and fourth disks 38a and 44a is as shown in FIG. Similarly, the positional relationship between the outer peripheral surfaces of the second and fifth disks 38b and 44b and between the outer peripheral surfaces of the third and sixth disks 38c and 44c is as shown in FIGS. Therefore, as can be seen from FIG. 5, when the first and second rollers 34 and 36 rotate together, the outer peripheral end surfaces of the first and fourth disks 38a and 44a, the second and fifth disks, regardless of their rotational positions. The outer peripheral surfaces of 38b and 44b and the outer peripheral surfaces of the third and sixth disks 38c and 44c are always close to each other at some portion. As shown in FIG. 4, the transfer surface 18 in which the first and second rollers 34 and 36 are arranged side by side has a rectangular selection surrounded by the disks 38a to 38c, 44a to 44c and the spacers 42. A large number of slot 46 are formed, and only waste W1 smaller than each sorting slot 46 can be dropped downward.

  The outer shape of each of the disks 38 and 44 may be substantially elliptical, but more strictly speaking, a pseudo ellipse as shown in FIG. 6, that is, the major axis length 2a of the ellipse is the minor axis length 2b. Bulge of a curve connecting the tip of the major axis 2a and the tip of the minor axis 2b is a true ellipse. A shape slightly inside the bulge of the curve is preferable.

  For example, consider the first and fourth disks 38a, 44a having a true ellipse whose major axis 2a is 1.37 times the minor axis 2b. In this case, if the interval between the shaft centers of the rotation shafts 40 is set to (a + b) and the gap Δd is set to zero, the rotation shafts 40 of the rotation shafts are interlockedly rotated by 45 ° as shown in FIG. Then, an overlap P occurs. Therefore, in an actual apparatus, it is necessary to make the interval between the rotation axes wider than (a + b) so that the overlap P does not occur. As a result, a certain gap Δd is left.

  On the other hand, when the first and fourth disks 38a, 44a having the outer shape of the pseudo ellipse having a shape in which the major axis 2a is 1.37 times the minor axis 2b and the bulge is slightly inside the true ellipse, Assuming that the interval between the rotary shafts 40 is set to (a + b) and the gap Δd is zero, as shown in FIG. 7B, even if the rotary shafts 40 rotate together by 45 °, theoretically, It is possible to prevent the overlap P from occurring. Therefore, in the actual apparatus, the first and second rollers can be obtained by taking the assembly variation and the like into consideration to slightly increase the interval between the rotating shafts to (a + b) and to secure the minimum gap Δd. A slight gap Δd can be maintained regardless of the rotational positions of 34 and 36.

  As described above, in the disc screen type sorting apparatus 10 of this embodiment, the discs 38 and 44 have an elliptical outer shape, and the transfer surface is rotated when the first and second rollers 34 and 36 rotate. Since the waste W on 18 is flipped up, an effect of preventing the waste W from adhering to each part and clogging the sorting slot 46 can be obtained. Further, when the first and second rollers 34, 36 rotate together, the outer peripheral end surfaces of the first and fourth disks 38a, 44a, the outer peripheral end surfaces of the second and fifth disks 38b, 44b, and the third and third The gaps at which the outer peripheral end faces of the six disks 38c and 44c face each other can be made small and substantially constant regardless of the rotational position. Accordingly, since the sorting slots 46 adjacent in the width direction of the transfer surface 18 do not continue with each other, it is possible to reliably prevent the large wastes W2 and W3 that are not to be sorted from passing through, and the small wastes. Only W1 can be selected accurately. In particular, by making the outer shape of the disks 38 and 44 into a predetermined pseudo ellipse whose curve bulge is smaller than that of a true ellipse, the gap between the outer peripheral surfaces of the opposing disks 38 and 44 is independent of the rotational position of the disk. It can be made almost constant and extremely small.

  A plurality of disks 38, 44, a disc-like spacer 42, and a rotary shaft 40 penetrating each central portion thereof are provided as separate detachable bahts, and the first and second rollers are assembled by assembling the parts. 34 and 36 are configured, the size of the sorting slot 46 can be freely changed simply by changing the diameter and thickness of the spacer 42. Therefore, even when the size of the waste to be selected is changed, it can be easily handled.

  The disc screen type sorting device of the present invention is not limited to the above embodiment. For example, the phase difference of each disk on each roller may be shifted by 30 °, for example, in addition to the above 45 °, and may be set by shifting by a predetermined angle. In the first and second rollers, the first to sixth disks may be formed integrally with each rotation shaft. In that case, there is no need to provide a spacer, and a sorting slot surrounded by the outer peripheral surface of the rotating shaft and each disk is formed on the transfer surface.

  Further, as shown in FIG. 8, each disk (here, the fourth, fifth and sixth disks 44a, 44b, 44c) rotates at a position below each roller (here, the second roller 36). If the plate-shaped scraper 48 having the cuts 48a passing therethrough is provided and the waste W1 adhering to each disk is scraped off, the effect of preventing clogging of the sorting slot 46 can be further enhanced. The scraper 48 is preferably fixed at a predetermined location of the apparatus main body 20.

  Further, the disc screen type sorting apparatus of the present invention is not limited to the form of the waste sorting system 12 described with reference to FIGS. 1 and 2, and can be used for various other forms of waste sorting systems.

DESCRIPTION OF SYMBOLS 10 Disc screen type sorting device 12 Waste sorting system 18 Transfer surface 18a Carry-in end 18b Discharge end 20 Device body 22 Drive device 34 First roller 36 Second roller 38 Disc 38a First disc 38b Second disc 38c Third disc 40 Rotating shaft 42 Spacer 44 Disc 44a 4th disc 44b 5th disc 44c 6th disc 46 Sorting slot 48 Spacer 48a Cut W Mixed waste W1, W2, W3 Waste

Claims (6)

A rotating shaft supported rotatably on the main body of the apparatus and a plurality of disc-shaped rollers provided on the outer peripheral surface of the rotating shaft at a predetermined interval in a flange shape, and the rotating shafts of the plurality of rollers interlocking in the same direction. A drive device for rotating,
A plurality of the rollers are arranged side by side to form a transfer surface on the upper side, and the mixed waste thrown into the carry-in end, which is one end of the transfer surface in the direction perpendicular to the rotation axis, is transferred to the transfer surface. In the disc screen type sorting device for discharging from the discharge end which is the other end of
The transfer surface is formed by alternately arranging first and second rollers as the rollers,
In the first roller, a plurality of the disks having the same elliptical outer shape are arranged at regular intervals in the axial direction, and any one of the plurality of disks is adjacent to each other in the axial direction. Provided at a predetermined angle,
In the second roller, a plurality of other disks having the same elliptical outer shape as the disk of the first roller are arranged at regular intervals in the axial direction, and any of the other disks is Axes adjacent to each other in the axial direction are provided with a predetermined angle offset around the axis,
In a state where the first and second rollers are supported by the apparatus main body in parallel with each other, the outer peripheral end surfaces of the respective disks are opposed to each other with a relative shift of 90 ° around each rotation axis,
The driving device drives the first and second rollers to rotate in conjunction with each other at a constant speed around the rotation axis;
The distance at which the rotating shafts of the first and second rollers are supported is set so that the outer peripheral end surfaces of the disks are close to each other in a range where they are in contact with each other or slightly separated from each other. Sorting device. The first roller is arranged such that the first, second, and third disks, which are a plurality of the disks having the same elliptical outer shape, repeat the order in the axial direction, and the second disk is the first disk. Provided with a 45 ° offset around the axis with respect to the disc, the third disc provided with a 90 ° offset around the axis with respect to the first disc,
The second roller is arranged such that the fourth, fifth, and sixth disks, which are the disks having the same elliptical outer shape as the disk of the first roller, repeat the order in the axial direction. 5 discs are provided offset by 45 ° around the axis with respect to the fourth disc, the sixth disc is provided offset by 90 ° around the axis with respect to the fourth disc,
The first and second rollers are supported by the apparatus main body, and the outer peripheral end surfaces of the first and fourth discs, the outer peripheral end surfaces of the second and fifth discs, and the third and sixth discs. The respective positions of the outer peripheral end faces of the disc are opposed to each other with a relative shift of 90 ° around each rotation axis,
The intervals at which the rotation shafts of the first and second rollers are supported are the outer peripheral end surfaces of the first and fourth disks, the outer peripheral end surfaces of the second and fifth disks, and the third and sixth disks. 2. The disc screen type sorting apparatus according to claim 1, wherein the outer peripheral end surfaces of the disc screens are set so as to be close to each other within a range in contact with each other or slightly separated from each other.   The disk is fixed to the rotation shafts parallel to each other, and the distance between the rotation shafts is approximately equal to ½ of the sum of the major axis and the minor axis of the ellipse, and is provided around the rotation axis. The elliptical outer shape of the disk is formed so that the positions thereof are relatively shifted by 90 ° around the axis and the outer peripheral end surfaces are in contact with each other or slightly separated from each other. Disc screen type sorting device.   4. The disk screen type disk according to claim 3, wherein the elliptical outer shape of the disk is such that the bulge of the curve connecting the tip of the major axis and the tip of the minor axis is slightly inside the bulge of the curve in the true ellipse. Sorting device.   5. The plurality of disks and a spacer having a smaller outer shape than the disks and defining an interval between the adjacent disks are detachably fixed to the rotating shaft that passes through each central portion. A disc screen type sorting device according to any one of the above. 6. The disc screen type sorting device according to claim 1, wherein a scraper is provided below the roller, and a notch through which a lower portion of the plurality of discs of the roller passes is formed.

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